sdhci.c revision 505a8680b78f580245cfb83f37971c7b62bcf991
1d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/* 270f10482c668301c483acded13bf68780ad352b9Pierre Ossman * linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver 3d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * 4b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. 5d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * 6d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * This program is free software; you can redistribute it and/or modify 7643f720cea989d2913fc0120a2384fecc1be1f9aPierre Ossman * it under the terms of the GNU General Public License as published by 8643f720cea989d2913fc0120a2384fecc1be1f9aPierre Ossman * the Free Software Foundation; either version 2 of the License, or (at 9643f720cea989d2913fc0120a2384fecc1be1f9aPierre Ossman * your option) any later version. 1084c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * 1184c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * Thanks to the following companies for their support: 1284c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * 1384c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * - JMicron (hardware and technical support) 14d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 15d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 16d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/delay.h> 17d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/highmem.h> 18b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman#include <linux/io.h> 1988b47679746b81534002bcba42da97ab82b5d12aPaul Gortmaker#include <linux/module.h> 20d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/dma-mapping.h> 215a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 22117636092a87a28a013a4acb5de5492645ed620fRalf Baechle#include <linux/scatterlist.h> 239bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski#include <linux/regulator/consumer.h> 2466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#include <linux/pm_runtime.h> 25d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 262f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#include <linux/leds.h> 272f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2822113efd00491310da802f3b1a9a66cfcf415facAries Lee#include <linux/mmc/mmc.h> 29d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/mmc/host.h> 30473b095a72a95ba719905b1f2e82cd18d099a427Aaron Lu#include <linux/mmc/card.h> 31bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski#include <linux/mmc/slot-gpio.h> 32d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 33d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include "sdhci.h" 34d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 35d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DRIVER_NAME "sdhci" 36d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 37d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DBG(f, x...) \ 38c65631781eb0f2e81865017c1484e9aef76e1b61Russell King pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x) 39d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 40f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#if defined(CONFIG_LEDS_CLASS) || (defined(CONFIG_LEDS_CLASS_MODULE) && \ 41f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman defined(CONFIG_MMC_SDHCI_MODULE)) 42f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#define SDHCI_USE_LEDS_CLASS 43f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#endif 44f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman 45b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath#define MAX_TUNING_LOOP 40 46b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 47df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanstatic unsigned int debug_quirks = 0; 4866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic unsigned int debug_quirks2; 496743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 50d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *); 51d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 52d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *, struct mmc_command *); 53d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *); 54069c9f142822d552ec885572945d8bce9eff0519Girish K Sstatic int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); 55cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data); 56d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 5766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 5866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host); 5966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host); 6066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#else 6166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_get(struct sdhci_host *host) 6266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 6366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 6466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 6566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_put(struct sdhci_host *host) 6666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 6766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 6866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 6966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 7066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 71d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_dumpregs(struct sdhci_host *host) 72d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 73a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n", 74412ab659b2bdad6afac8f84daf2a8a393145dcaePhilip Rakity mmc_hostname(host->mmc)); 75d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 76a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", 774e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_DMA_ADDRESS), 784e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_HOST_VERSION)); 79a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", 804e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_SIZE), 814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_COUNT)); 82a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", 834e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_ARGUMENT), 844e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_TRANSFER_MODE)); 85a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", 864e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_PRESENT_STATE), 874e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_HOST_CONTROL)); 88a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", 894e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_POWER_CONTROL), 904e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL)); 91a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", 924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_WAKE_UP_CONTROL), 934e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_CLOCK_CONTROL)); 94a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", 954e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_TIMEOUT_CONTROL), 964e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_STATUS)); 97a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", 984e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_ENABLE), 994e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_SIGNAL_ENABLE)); 100a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", 1014e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_ACMD12_ERR), 1024e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_SLOT_INT_STATUS)); 103a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Caps: 0x%08x | Caps_1: 0x%08x\n", 1044e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_CAPABILITIES), 105e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readl(host, SDHCI_CAPABILITIES_1)); 106a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Cmd: 0x%08x | Max curr: 0x%08x\n", 107e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readw(host, SDHCI_COMMAND), 1084e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_MAX_CURRENT)); 109a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Host ctl2: 0x%08x\n", 110f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_readw(host, SDHCI_HOST_CONTROL2)); 111d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 112be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks if (host->flags & SDHCI_USE_ADMA) 113a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n", 114be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ERROR), 115be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ADDRESS)); 116be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks 117a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": ===========================================\n"); 118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Low level functions * 123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1267260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set) 1277260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1287260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov u32 ier; 1297260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1307260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier = sdhci_readl(host, SDHCI_INT_ENABLE); 1317260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier &= ~clear; 1327260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier |= set; 1337260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_INT_ENABLE); 1347260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); 1357260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1367260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1377260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_unmask_irqs(struct sdhci_host *host, u32 irqs) 1387260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1397260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, 0, irqs); 1407260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1417260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1427260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_mask_irqs(struct sdhci_host *host, u32 irqs) 1437260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1447260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, irqs, 0); 1457260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1467260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1477260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_set_card_detection(struct sdhci_host *host, bool enable) 1487260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 149d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo u32 present, irqs; 1507260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 151c79396c191bc19703df6eb6bbd0f673ed0df6c9dAdrian Hunter if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || 15287b87a3fc0eec58d95e4216392f889a26439ad22Daniel Drake (host->mmc->caps & MMC_CAP_NONREMOVABLE)) 15366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return; 15466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 155d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 156d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_CARD_PRESENT; 157d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo irqs = present ? SDHCI_INT_CARD_REMOVE : SDHCI_INT_CARD_INSERT; 158d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 1597260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov if (enable) 1607260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_unmask_irqs(host, irqs); 1617260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov else 1627260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_mask_irqs(host, irqs); 1637260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1647260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1657260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_enable_card_detection(struct sdhci_host *host) 1667260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1677260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, true); 1687260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1697260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1707260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_disable_card_detection(struct sdhci_host *host) 1717260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1727260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, false); 1737260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1747260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_reset(struct sdhci_host *host, u8 mask) 176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 177e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman unsigned long timeout; 178063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov u32 uninitialized_var(ier); 179e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 180b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { 1814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & 1828a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman SDHCI_CARD_PRESENT)) 1838a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman return; 1848a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman } 1858a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 186063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) 187063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov ier = sdhci_readl(host, SDHCI_INT_ENABLE); 188063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov 189393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity if (host->ops->platform_reset_enter) 190393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity host->ops->platform_reset_enter(host, mask); 191393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity 1924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET); 193d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 194e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (mask & SDHCI_RESET_ALL) 195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = 0; 196d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 197e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* Wait max 100 ms */ 198e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout = 100; 199e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 200e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* hw clears the bit when it's done */ 2014e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) { 202e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (timeout == 0) { 203a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Reset 0x%x never completed.\n", 204e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mmc_hostname(host->mmc), (int)mask); 205e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman sdhci_dumpregs(host); 206e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman return; 207e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman } 208e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout--; 209e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mdelay(1); 210d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 211063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov 212393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity if (host->ops->platform_reset_exit) 213393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity host->ops->platform_reset_exit(host, mask); 214393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity 215063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) 216063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier); 2173abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie 2183abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2193abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie if ((host->ops->enable_dma) && (mask & SDHCI_RESET_ALL)) 2203abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie host->ops->enable_dma(host); 2213abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie } 222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2242f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); 2252f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2262f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_init(struct sdhci_host *host, int soft) 227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2282f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) 2292f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA); 2302f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre else 2312f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_ALL); 232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2337260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, 2347260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | 2353192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | 2363192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | 2376aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE); 2382f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2392f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) { 2402f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre /* force clock reconfiguration */ 2412f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre host->clock = 0; 2422f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_set_ios(host->mmc, &host->mmc->ios); 2432f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre } 2447260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2467260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_reinit(struct sdhci_host *host) 2477260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 2482f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 249b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu /* 250b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * Retuning stuffs are affected by different cards inserted and only 251b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * applicable to UHS-I cards. So reset these fields to their initial 252b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * value when card is removed. 253b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu */ 254973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 255973905feab85416784f36cc94b868392fd465ef4Aaron Lu host->flags &= ~SDHCI_USING_RETUNING_TIMER; 256973905feab85416784f36cc94b868392fd465ef4Aaron Lu 257b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu del_timer_sync(&host->tuning_timer); 258b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu host->flags &= ~SDHCI_NEEDS_RETUNING; 259b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu host->mmc->max_blk_count = 260b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 261b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu } 2627260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 263d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 264d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 265d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_activate_led(struct sdhci_host *host) 266d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 267d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 268d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2694e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 270d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_LED; 2714e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 272d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 273d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 274d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_deactivate_led(struct sdhci_host *host) 275d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 276d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2784e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 279d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_LED; 2804e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 281d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 283f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 2842f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanstatic void sdhci_led_control(struct led_classdev *led, 2852f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman enum led_brightness brightness) 2862f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman{ 2872f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman struct sdhci_host *host = container_of(led, struct sdhci_host, led); 2882f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman unsigned long flags; 2892f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2902f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2912f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 29266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) 29366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter goto out; 29466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2952f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman if (brightness == LED_OFF) 2962f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_deactivate_led(host); 2972f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman else 2982f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_activate_led(host); 29966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterout: 3002f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 3012f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman} 3022f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 3032f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 304d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 305d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 306d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Core functions * 307d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 308d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 310a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_read_block_pio(struct sdhci_host *host) 311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3127659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 3137659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 3147244b85bd17313d7d300ee93ec7bfbca1f4ccf3dSteven Noonan u32 uninitialized_var(scratch); 3157659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 317a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO reading\n"); 318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 319a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3207659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 321d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3227659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 323d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 324a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3257659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3267659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 327d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3287659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3307659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3317659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 33214d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 3337659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 334d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3357659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3367659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (chunk == 0) { 3374e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov scratch = sdhci_readl(host, SDHCI_BUFFER); 3387659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 4; 339a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3407659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3417659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman *buf = scratch & 0xFF; 3427659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3437659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3447659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch >>= 8; 3457659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk--; 3467659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 347d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 348a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3497659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3507659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3517659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3527659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 353a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 354d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 355a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_write_block_pio(struct sdhci_host *host) 356a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 3577659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 3587659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 3597659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u32 scratch; 3607659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 361d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 362a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO writing\n"); 363a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 364a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3657659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3667659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 367d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3687659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 369d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 370a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3717659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3727659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 373a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3747659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 3757659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3767659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3777659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 3787659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3797659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 380d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3817659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3827659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch |= (u32)*buf << (chunk * 8); 3837659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3847659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3857659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk++; 3867659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 3877659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3887659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if ((chunk == 4) || ((len == 0) && (blksize == 0))) { 3894e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, scratch, SDHCI_BUFFER); 3907659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3917659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 392d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 393d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 394d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 3957659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3967659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3977659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3987659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 399a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 400a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 401a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_transfer_pio(struct sdhci_host *host) 402a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 403a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 mask; 404a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 405a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(!host->data); 406a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 4077659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 408a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 409a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 410a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 411a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_DATA_AVAILABLE; 412a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 413a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_SPACE_AVAILABLE; 414a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 4154a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman /* 4164a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * Some controllers (JMicron JMB38x) mess up the buffer bits 4174a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * for transfers < 4 bytes. As long as it is just one block, 4184a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * we can ignore the bits. 4194a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman */ 4204a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_SMALL_PIO) && 4214a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman (host->data->blocks == 1)) 4224a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman mask = ~0; 4234a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman 4244e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 4253e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY) 4263e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov udelay(100); 4273e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov 428a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 429a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_read_block_pio(host); 430a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 431a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_write_block_pio(host); 432d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4337659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks--; 4347659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 435a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman break; 436a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 437d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 438a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO transfer complete.\n"); 439d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 440d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags) 4422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_save(*flags); 444482fce997e143a8d5429406fe066d31aa76ef70aCong Wang return kmap_atomic(sg_page(sg)) + sg->offset; 4452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) 4482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 449482fce997e143a8d5429406fe066d31aa76ef70aCong Wang kunmap_atomic(buffer); 4502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_restore(*flags); 4512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 453118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooksstatic void sdhci_set_adma_desc(u8 *desc, u32 addr, int len, unsigned cmd) 454118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks{ 4559e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le32 *dataddr = (__le32 __force *)(desc + 4); 4569e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le16 *cmdlen = (__le16 __force *)desc; 457118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4589e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks /* SDHCI specification says ADMA descriptors should be 4 byte 4599e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks * aligned, so using 16 or 32bit operations should be safe. */ 460118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4619e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[0] = cpu_to_le16(cmd); 4629e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[1] = cpu_to_le16(len); 4639e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks 4649e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks dataddr[0] = cpu_to_le32(addr); 465118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks} 466118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4678f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanstatic int sdhci_adma_table_pre(struct sdhci_host *host, 4682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 4692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 4712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *desc; 4732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 4742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t addr; 4752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t align_addr; 4762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int len, offset; 4772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 4792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i; 4802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 4812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 4822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The spec does not specify endianness of descriptor table. 4852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We currently guess that it is LE. 4862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 4892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 4902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 4912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 4922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The ADMA descriptor table is mapped further down as we 4952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * need to fill it with data first. 4962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr = dma_map_single(mmc_dev(host->mmc), 4992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer, 128 * 4, direction); 5008d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(mmc_dev(host->mmc), host->align_addr)) 5018f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto fail; 5022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->align_addr & 0x3); 5032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->sg_count = dma_map_sg(mmc_dev(host->mmc), 5052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg, data->sg_len, direction); 5068f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->sg_count == 0) 5078f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_align; 5082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc = host->adma_desc; 5102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 5112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr = host->align_addr; 5132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 5152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr = sg_dma_address(sg); 5162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len = sg_dma_len(sg); 5172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The SDHCI specification states that ADMA 5202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * addresses must be 32-bit aligned. If they 5212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * aren't, then we use a bounce buffer for 5222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * the (up to three) bytes that screw up the 5232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment. 5242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman offset = (4 - (addr & 0x3)) & 0x3; 5262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (offset) { 5272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 5296cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 5302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(align, buffer, offset); 5312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 5322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 534118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 535118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, align_addr, offset, 0x21); 5362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(offset > 65536); 5382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 5402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr += 4; 5412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr += offset; 5452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len -= offset; 5462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(len > 65536); 5492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 550118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 551118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, addr, len, 0x21); 5522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * If this triggers then we have a calculation bug 5562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * somewhere. :/ 5572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman WARN_ON((desc - host->adma_desc) > (128 * 2 + 1) * 4); 5592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 56170764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) { 56270764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 56370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Mark the last descriptor as the terminating descriptor 56470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 56570764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (desc != host->adma_desc) { 56670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc -= 8; 56770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc[0] |= 0x2; /* end */ 56870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 56970764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } else { 57070764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 57170764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Add a terminating entry. 57270764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 5732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 57470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* nop, end, valid */ 57570764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham sdhci_set_adma_desc(desc, 0, 0, 0x3); 57670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 5772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Resync align buffer as we might have changed it. 5802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_single_for_device(mmc_dev(host->mmc), 5832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr, 128 * 4, direction); 5842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_addr = dma_map_single(mmc_dev(host->mmc), 5872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc, (128 * 2 + 1) * 4, DMA_TO_DEVICE); 588980167b7fb20fb181766218b4771fc7420a7bbb4Pierre Ossman if (dma_mapping_error(mmc_dev(host->mmc), host->adma_addr)) 5898f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_entries; 5902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->adma_addr & 0x3); 5918f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 5928f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return 0; 5938f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 5948f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_entries: 5958f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 5968f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg_len, direction); 5978f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_align: 5988f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 5998f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 128 * 4, direction); 6008f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanfail: 6018f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return -EINVAL; 6022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 6032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_adma_table_post(struct sdhci_host *host, 6052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 6062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 6072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 6082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 6102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i, size; 6112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 6122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 6132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 6142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 6162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 6172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 6182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 6192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->adma_addr, 6212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (128 * 2 + 1) * 4, DMA_TO_DEVICE); 6222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 6242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 128 * 4, direction); 6252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) { 6272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg, 6282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 6312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 6332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg_dma_address(sg) & 0x3) { 6342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman size = 4 - (sg_dma_address(sg) & 0x3); 6352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 6376cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 6382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(buffer, align, size); 6392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 6402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 6422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 6472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 6492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 650a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentinstatic u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) 651d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 6521c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman u8 count; 653a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 6541c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman unsigned target_timeout, current_timeout; 655d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 656ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* 657ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * If the host controller provides us with an incorrect timeout 658ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * value, just skip the check and use 0xE. The hardware may take 659ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * longer to time out, but that's much better than having a too-short 660ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * timeout value. 661ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman */ 66211a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) 663ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return 0xE; 664e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 665a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* Unspecified timeout, assume max */ 666a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data && !cmd->cmd_timeout_ms) 667a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin return 0xE; 668d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 669a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* timeout in us */ 670a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 671a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin target_timeout = cmd->cmd_timeout_ms * 1000; 67278a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko else { 67378a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout = data->timeout_ns / 1000; 67478a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko if (host->clock) 67578a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout += data->timeout_clks / host->clock; 67678a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko } 67781b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov 6781c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* 6791c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * Figure out needed cycles. 6801c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * We do this in steps in order to fit inside a 32 bit int. 6811c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * The first step is the minimum timeout, which will have a 6821c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * minimum resolution of 6 bits: 6831c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) 2^13*1000 > 2^22, 6841c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (2) host->timeout_clk < 2^16 6851c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * => 6861c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) / (2) > 2^6 6871c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman */ 6881c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0; 6891c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout = (1 << 13) * 1000 / host->timeout_clk; 6901c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman while (current_timeout < target_timeout) { 6911c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count++; 6921c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout <<= 1; 6931c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) 6941c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman break; 6951c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 6961c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 6971c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) { 69809eeff52bf20d485bcafc441f01c142c59c3da16Chris Ball DBG("%s: Too large timeout 0x%x requested for CMD%d!\n", 69909eeff52bf20d485bcafc441f01c142c59c3da16Chris Ball mmc_hostname(host->mmc), count, cmd->opcode); 7001c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0xE; 7011c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 7021c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 703ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return count; 704ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman} 705ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 7066aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsovstatic void sdhci_set_transfer_irqs(struct sdhci_host *host) 7076aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov{ 7086aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL; 7096aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR; 7106aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 7116aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov if (host->flags & SDHCI_REQ_USE_DMA) 7126aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, pio_irqs, dma_irqs); 7136aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov else 7146aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, dma_irqs, pio_irqs); 7156aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov} 7166aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 717a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentinstatic void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) 718ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman{ 719ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman u8 count; 7202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 ctrl; 721a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 7228f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman int ret; 723ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 724ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman WARN_ON(host->data); 725ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 726a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (data || (cmd->flags & MMC_RSP_BUSY)) { 727a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin count = sdhci_calc_timeout(host, cmd); 728a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); 729a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin } 730a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin 731a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 732ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return; 733ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 734ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* Sanity checks */ 735ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz * data->blocks > 524288); 736ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz > host->mmc->max_blk_size); 737ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blocks > 65535); 738ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 739ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data = data; 740ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data_early = 0; 741f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = 0; 742ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 743a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) 744c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman host->flags |= SDHCI_REQ_USE_DMA; 745c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 7462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * FIXME: This doesn't account for merging when mapping the 7482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * scatterlist. 7492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) 7602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 7642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 7652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->length & 0x3) { 7662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 7672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "transfer size (%d)\n", 7682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sg->length); 7692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 7712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 774c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 775c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 776c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman /* 777c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * The assumption here being that alignment is the same after 778c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * translation to device address space. 779c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman */ 7802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * As we use 3 byte chunks to work around 7882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment problems, we need to check this 7892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * quirk. 7902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) 7952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 7992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 8002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->offset & 0x3) { 8012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 8022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "bad alignment\n"); 8032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 8052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 8108f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 8118f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_USE_ADMA) { 8128f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman ret = sdhci_adma_table_pre(host, data); 8138f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (ret) { 8148f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 8158f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 8168f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 8178f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8188f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 819ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8208f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 8214e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, host->adma_addr, 8224e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_ADMA_ADDRESS); 8238f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8248f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 825c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler int sg_cnt; 8268f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 827c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler sg_cnt = dma_map_sg(mmc_dev(host->mmc), 8288f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg, data->sg_len, 8298f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman (data->flags & MMC_DATA_READ) ? 8308f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_FROM_DEVICE : 8318f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_TO_DEVICE); 832c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler if (sg_cnt == 0) { 8338f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 8348f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 8358f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 8368f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8378f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 838ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8398f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 840719a61b452ff74cf81a96e4212748d9d63bcc924Pierre Ossman WARN_ON(sg_cnt != 1); 8414e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, sg_dma_address(data->sg), 8424e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_DMA_ADDRESS); 8438f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8448f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8458f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8468f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 8472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 8482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Always adjust the DMA selection as some controllers 8492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (e.g. JMicron) can't do PIO properly when the selection 8502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * is ADMA. 8512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 8522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->version >= SDHCI_SPEC_200) { 8534e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 8542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl &= ~SDHCI_CTRL_DMA_MASK; 8552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->flags & SDHCI_REQ_USE_DMA) && 8562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) 8572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_ADMA32; 8582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 8592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_SDMA; 8604e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 861c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 862c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 8638f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (!(host->flags & SDHCI_REQ_USE_DMA)) { 864da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior int flags; 865da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior 866da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags = SG_MITER_ATOMIC; 867da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior if (host->data->flags & MMC_DATA_READ) 868da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_TO_SG; 869da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior else 870da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_FROM_SG; 871da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags); 8727659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks = data->blocks; 873d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 874c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8756aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_set_transfer_irqs(host); 8766aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 877f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* Set the DMA boundary value and block size */ 878f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, 879f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni data->blksz), SDHCI_BLOCK_SIZE); 8804e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); 881c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman} 882c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 883c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossmanstatic void sdhci_set_transfer_mode(struct sdhci_host *host, 884e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_command *cmd) 885c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman{ 886c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman u16 mode; 887e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_data *data = cmd->data; 888c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 889c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data == NULL) 890c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman return; 891c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 892e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman WARN_ON(!host->data); 893e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 894c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode = SDHCI_TRNS_BLK_CNT_EN; 895e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (mmc_op_multi(cmd->opcode) || data->blocks > 1) { 896e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_MULTI; 897e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 898e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * If we are sending CMD23, CMD12 never gets sent 899e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * on successful completion (so no Auto-CMD12). 900e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 901e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) 902e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD12; 9038edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) { 9048edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD23; 9058edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin sdhci_writel(host, host->mrq->sbc->arg, SDHCI_ARGUMENT2); 9068edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 907c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 9088edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 909c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->flags & MMC_DATA_READ) 910c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_READ; 911c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) 912c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_DMA; 913c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 9144e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, mode, SDHCI_TRANSFER_MODE); 915d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 916d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 917d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *host) 918d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 919d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_data *data; 920d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 921d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!host->data); 922d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 923d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data = host->data; 924d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 925d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 926c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 9272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 9282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_adma_table_post(host, data); 9292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else { 9302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 9312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, (data->flags & MMC_DATA_READ) ? 9322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DMA_FROM_DEVICE : DMA_TO_DEVICE); 9332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 934d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 935d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 936d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 937c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * The specification states that the block count register must 938c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * be updated, but it does not specify at what point in the 939c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * data flow. That makes the register entirely useless to read 940c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * back so we have to assume that nothing made it to the card 941c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * in the event of an error. 942d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 943c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman if (data->error) 944c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = 0; 945d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 946c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = data->blksz * data->blocks; 947d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 948e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 949e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Need to send CMD12 if - 950e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * a) open-ended multiblock transfer (no CMD23) 951e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * b) error in multiblock transfer 952e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 953e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (data->stop && 954e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin (data->error || 955e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin !host->mrq->sbc)) { 956e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 957d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 958d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 959d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 960d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 96117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (data->error) { 962d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 963d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 964d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 965d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 966d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, data->stop); 967d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 968d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 969d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 970d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 971d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 972d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 973d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int flags; 974fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman u32 mask; 9757cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 976d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->cmd); 978d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 9807cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 981fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 982fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask = SDHCI_CMD_INHIBIT; 983fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) 984fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask |= SDHCI_DATA_INHIBIT; 985fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 986fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman /* We shouldn't wait for data inihibit for stop commands, even 987fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman though they might use busy signaling */ 988fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if (host->mrq->data && (cmd == host->mrq->data->stop)) 989fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask &= ~SDHCI_DATA_INHIBIT; 990fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 9914e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 9927cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 993a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Controller never released " 994acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "inhibit bit(s).\n", mmc_hostname(host->mmc)); 995d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 99617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EIO; 997d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 998d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 999d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 10007cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 10017cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 10027cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1003d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mod_timer(&host->timer, jiffies + 10 * HZ); 1005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1006d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = cmd; 1007d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1008a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin sdhci_prepare_data(host, cmd); 1009d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10104e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); 1011d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1012e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_set_transfer_mode(host, cmd); 1013c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 1014d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { 1015a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Unsupported response type!\n", 1016d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 101717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EINVAL; 1018d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1019d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1020d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1021d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1022d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(cmd->flags & MMC_RSP_PRESENT)) 1023d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_NONE; 1024d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_136) 1025d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_LONG; 1026d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_BUSY) 1027d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT_BUSY; 1028d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT; 1030d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1031d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_CRC) 1032d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_CRC; 1033d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_OPCODE) 1034d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_INDEX; 1035b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1036b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 is special in that the Data Present Select should be set */ 1037069c9f142822d552ec885572945d8bce9eff0519Girish K S if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK || 1038069c9f142822d552ec885572945d8bce9eff0519Girish K S cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200) 1039d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_DATA; 1040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10414e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); 1042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1043d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *host) 1045d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 1047d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(host->cmd == NULL); 1049d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1050d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_PRESENT) { 1051d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_136) { 1052d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* CRC is stripped so we need to do some shifting. */ 1053d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < 4;i++) { 10544e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[i] = sdhci_readl(host, 1055d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4) << 8; 1056d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (i != 3) 1057d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] |= 10584e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, 1059d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4-1); 1060d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1061d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 10624e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE); 1063d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1064d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1065d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 106617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = 0; 1067d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1068e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Finished CMD23, now send actual command. */ 1069e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->cmd == host->mrq->sbc) { 1070e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1071e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, host->mrq->cmd); 1072e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } else { 1073e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 1074e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Processed actual command. */ 1075e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->data && host->data_early) 1076e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_finish_data(host); 1077d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1078e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->cmd->data) 1079e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin tasklet_schedule(&host->finish_tasklet); 1080e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1081e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1082e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } 1083d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1084d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1085d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) 1086d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1087c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath int div = 0; /* Initialized for compiler warning */ 1088df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO int real_div = div, clk_mul = 1; 1089c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath u16 clk = 0; 10907cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 1091d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 109230832ab56c80d96cfaf5a786524f0d8c57fadfa1Todd Poynor if (clock && clock == host->clock) 1093d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1094d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1095df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO host->mmc->actual_clock = 0; 1096df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO 10978114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->ops->set_clock) { 10988114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov host->ops->set_clock(host, clock); 10998114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) 11008114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov return; 11018114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov } 11028114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov 11034e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); 1104d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1105d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == 0) 1106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 1107d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 110885105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version >= SDHCI_SPEC_300) { 1109c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1110c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Check if the Host Controller supports Programmable Clock 1111c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Mode. 1112c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1113c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 1114c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath u16 ctrl; 1115c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 1116c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1117c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * We need to figure out whether the Host Driver needs 1118c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * to select Programmable Clock Mode, or the value can 1119c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * be set automatically by the Host Controller based on 1120c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * the Preset Value registers. 1121c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1122c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1123c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (!(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 1124c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath for (div = 1; div <= 1024; div++) { 1125c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (((host->max_clk * host->clk_mul) / 1126c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div) <= clock) 1127c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath break; 1128c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 1129c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1130c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Set Programmable Clock Mode in the Clock 1131c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Control register. 1132c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1133c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath clk = SDHCI_PROG_CLOCK_MODE; 1134df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO real_div = div; 1135df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO clk_mul = host->clk_mul; 1136c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div--; 1137c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 1138c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else { 1139c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* Version 3.00 divisors must be a multiple of 2. */ 1140c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->max_clk <= clock) 1141c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div = 1; 1142c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else { 1143c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; 1144c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div += 2) { 1145c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if ((host->max_clk / div) <= clock) 1146c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath break; 1147c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 114885105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1149df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO real_div = div; 1150c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 115185105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 115285105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } else { 115385105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao /* Version 2.00 divisors must be a power of 2. */ 11540397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) { 115585105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if ((host->max_clk / div) <= clock) 115685105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao break; 115785105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1158df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO real_div = div; 1159c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 1160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1162df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO if (real_div) 1163df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div; 1164df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO 1165c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; 116685105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) 116785105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao << SDHCI_DIVIDER_HI_SHIFT; 1168d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_INT_EN; 11694e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1170d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 117127f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball /* Wait max 20 ms */ 117227f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball timeout = 20; 11734e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) 11747cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman & SDHCI_CLOCK_INT_STABLE)) { 11757cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 1176a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Internal clock never " 1177acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "stabilised.\n", mmc_hostname(host->mmc)); 1178d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1179d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1180d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 11817cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 11827cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 11837cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1185d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_CARD_EN; 11864e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1188d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 1189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = clock; 1190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1192ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunterstatic int sdhci_set_power(struct sdhci_host *host, unsigned short power) 1193146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman{ 11948364248a829d50495a796e7561aaf9a6976f846cGiuseppe Cavallaro u8 pwr = 0; 1195146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 11968364248a829d50495a796e7561aaf9a6976f846cGiuseppe Cavallaro if (power != (unsigned short)-1) { 1197ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman switch (1 << power) { 1198ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_165_195: 1199ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_180; 1200ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1201ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_29_30: 1202ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_30_31: 1203ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_300; 1204ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1205ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_32_33: 1206ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_33_34: 1207ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_330; 1208ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1209ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman default: 1210ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman BUG(); 1211ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1212ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1213ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1214ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (host->pwr == pwr) 1215ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return -1; 1216146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1217ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman host->pwr = pwr; 1218ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1219ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (pwr == 0) { 12204e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1221ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return 0; 12229e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt } 12239e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 12249e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt /* 12259e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * Spec says that we should clear the power reg before setting 12269e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * a new value. Some controllers don't seem to like this though. 12279e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt */ 1228b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) 12294e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1230146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1231e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon /* 1232c71f65129a1fb67bc6b9b8d03b493675b5c9302bAndres Salomon * At least the Marvell CaFe chip gets confused if we set the voltage 1233e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon * and set turn on power at the same time, so set the voltage first. 1234e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon */ 123511a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) 1236ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1237e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon 1238ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr |= SDHCI_POWER_ON; 1239146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1240ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1241557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte 1242557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte /* 1243557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * Some controllers need an extra 10ms delay of 10ms before they 1244557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * can apply clock after applying power 1245557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte */ 124611a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER) 1247557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte mdelay(10); 1248ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter 1249ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return power; 1250146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman} 1251146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1252d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1253d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * MMC callbacks * 1255d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1257d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1258d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) 1259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1260d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1261505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo int present; 1262d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1263473b095a72a95ba719905b1f2e82cd18d099a427Aaron Lu u32 tuning_opcode; 1264d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1265d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1266d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 126766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 126866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1269d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1270d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1271d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->mrq != NULL); 1272d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1273f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 1274d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_activate_led(host); 12752f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 1276e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1277e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 1278e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Ensure we don't send the STOP for non-SET_BLOCK_COUNTED 1279e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * requests if Auto-CMD12 is enabled. 1280e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 1281e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) { 1282c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang if (mrq->stop) { 1283c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->data->stop = NULL; 1284c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->stop = NULL; 1285c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1286c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1288d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = mrq; 1289d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1290505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo /* 1291505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * Firstly check card presence from cd-gpio. The return could 1292505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * be one of the following possibilities: 1293505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * negative: cd-gpio is not available 1294505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * zero: cd-gpio is used, and card is removed 1295505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * one: cd-gpio is used, and card is present 1296505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo */ 1297505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = mmc_gpio_get_cd(host->mmc); 1298505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo if (present < 0) { 1299505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo /* If polling, assume that the card is always present. */ 1300505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 1301505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = 1; 1302505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo else 1303505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 1304505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo SDHCI_CARD_PRESENT; 1305bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski } 1306bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski 130768d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (!present || host->flags & SDHCI_DEVICE_DEAD) { 130817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 1309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1310cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } else { 1311cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath u32 present_state; 1312cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1313cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 1314cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1315cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * Check if the re-tuning timer has already expired and there 1316cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * is no on-going data transfer. If so, we need to execute 1317cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * tuning procedure before sending command. 1318cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1319cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if ((host->flags & SDHCI_NEEDS_RETUNING) && 1320cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) { 132114efd957209461bbdf285bf0d67e931955d04a4cChris Ball if (mmc->card) { 132214efd957209461bbdf285bf0d67e931955d04a4cChris Ball /* eMMC uses cmd21 but sd and sdio use cmd19 */ 132314efd957209461bbdf285bf0d67e931955d04a4cChris Ball tuning_opcode = 132414efd957209461bbdf285bf0d67e931955d04a4cChris Ball mmc->card->type == MMC_TYPE_MMC ? 132514efd957209461bbdf285bf0d67e931955d04a4cChris Ball MMC_SEND_TUNING_BLOCK_HS200 : 132614efd957209461bbdf285bf0d67e931955d04a4cChris Ball MMC_SEND_TUNING_BLOCK; 132714efd957209461bbdf285bf0d67e931955d04a4cChris Ball spin_unlock_irqrestore(&host->lock, flags); 132814efd957209461bbdf285bf0d67e931955d04a4cChris Ball sdhci_execute_tuning(mmc, tuning_opcode); 132914efd957209461bbdf285bf0d67e931955d04a4cChris Ball spin_lock_irqsave(&host->lock, flags); 133014efd957209461bbdf285bf0d67e931955d04a4cChris Ball 133114efd957209461bbdf285bf0d67e931955d04a4cChris Ball /* Restore original mmc_request structure */ 133214efd957209461bbdf285bf0d67e931955d04a4cChris Ball host->mrq = mrq; 133314efd957209461bbdf285bf0d67e931955d04a4cChris Ball } 1334cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1335cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 13368edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23)) 1337e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->sbc); 1338e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin else 1339e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->cmd); 1340cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1341d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 13425f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1343d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1344d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1345d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 134666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) 1347d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1348d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1349ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter int vdd_bit = -1; 1350d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 1351d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1352d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1353d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1354ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter if (host->flags & SDHCI_DEVICE_DEAD) { 1355ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 1356ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter if (host->vmmc && ios->power_mode == MMC_POWER_OFF) 1357ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter mmc_regulator_set_ocr(host->mmc, host->vmmc, 0); 1358ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return; 1359ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter } 13601e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1361d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Reset the chip on each power off. 1363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Should clear out any weird states. 1364d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) { 13664e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 13677260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_reinit(host); 1368d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1369d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1370d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_set_clock(host, ios->clock); 1371d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1372d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) 1373ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter vdd_bit = sdhci_set_power(host, -1); 1374d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1375ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter vdd_bit = sdhci_set_power(host, ios->vdd); 1376ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter 1377ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter if (host->vmmc && vdd_bit != -1) { 1378ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 1379ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd_bit); 1380ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter spin_lock_irqsave(&host->lock, flags); 1381ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter } 1382d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1383643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity if (host->ops->platform_send_init_74_clocks) 1384643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity host->ops->platform_send_init_74_clocks(host, ios->power_mode); 1385643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity 138615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity /* 138715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * If your platform has 8-bit width support but is not a v3 controller, 138815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * or if it requires special setup code, you should implement that in 138915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * platform_8bit_width(). 139015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity */ 139115ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->ops->platform_8bit_width) 139215ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity host->ops->platform_8bit_width(host, ios->bus_width); 139315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity else { 139415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 139515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (ios->bus_width == MMC_BUS_WIDTH_8) { 139615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_4BITBUS; 139715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->version >= SDHCI_SPEC_300) 139815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl |= SDHCI_CTRL_8BITBUS; 139915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } else { 140015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->version >= SDHCI_SPEC_300) 140115ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_8BITBUS; 140215ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (ios->bus_width == MMC_BUS_WIDTH_4) 140315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl |= SDHCI_CTRL_4BITBUS; 140415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity else 140515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_4BITBUS; 140615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } 140715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 140815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } 1409ae6d6c92212e94b12ab9365c23fb73acc2c3c2e7Kyungmin Park 141015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 1411cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 14123ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity if ((ios->timing == MMC_TIMING_SD_HS || 14133ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity ios->timing == MMC_TIMING_MMC_HS) 14143ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity && !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) 1415cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl |= SDHCI_CTRL_HISPD; 1416cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman else 1417cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl &= ~SDHCI_CTRL_HISPD; 1418cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1419d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (host->version >= SDHCI_SPEC_300) { 142049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath u16 clk, ctrl_2; 142149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath unsigned int clock; 142249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 142349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* In case of UHS-I modes, set High Speed Enable */ 1424069c9f142822d552ec885572945d8bce9eff0519Girish K S if ((ios->timing == MMC_TIMING_MMC_HS200) || 1425069c9f142822d552ec885572945d8bce9eff0519Girish K S (ios->timing == MMC_TIMING_UHS_SDR50) || 142649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_SDR104) || 142749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_DDR50) || 1428dd8df17fe83483d7ea06ff229895e35a42071599Alexander Elbs (ios->timing == MMC_TIMING_UHS_SDR25)) 142949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath ctrl |= SDHCI_CTRL_HISPD; 1430d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1431d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1432d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(ctrl_2 & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 1433758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1434d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1435d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * We only need to set Driver Strength if the 1436d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * preset value enable is not set. 1437d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1438d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 &= ~SDHCI_CTRL_DRV_TYPE_MASK; 1439d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (ios->drv_type == MMC_SET_DRIVER_TYPE_A) 1440d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_A; 1441d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C) 1442d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_C; 1443d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1444d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 1445758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else { 1446758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* 1447758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * According to SDHC Spec v3.00, if the Preset Value 1448758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Enable in the Host Control 2 register is set, we 1449758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * need to reset SD Clock Enable before changing High 1450758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Speed Enable to avoid generating clock gliches. 1451758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath */ 1452758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1453758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Reset SD Clock Enable */ 1454758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 1455758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 1456758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1457758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1458758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1459758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1460758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Re-enable SD Clock */ 1461758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clock = host->clock; 1462758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath host->clock = 0; 1463758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_set_clock(host, clock); 1464d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 146549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 146649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 146749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Reset SD Clock Enable */ 146849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 146949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 147049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 147149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 14726322cdd0eb22e016aeced886c2046d115139c962Philip Rakity if (host->ops->set_uhs_signaling) 14736322cdd0eb22e016aeced886c2046d115139c962Philip Rakity host->ops->set_uhs_signaling(host, ios->timing); 14746322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else { 14756322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 14766322cdd0eb22e016aeced886c2046d115139c962Philip Rakity /* Select Bus Speed Mode for host */ 14776322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; 1478069c9f142822d552ec885572945d8bce9eff0519Girish K S if (ios->timing == MMC_TIMING_MMC_HS200) 1479069c9f142822d552ec885572945d8bce9eff0519Girish K S ctrl_2 |= SDHCI_CTRL_HS_SDR200; 1480069c9f142822d552ec885572945d8bce9eff0519Girish K S else if (ios->timing == MMC_TIMING_UHS_SDR12) 14816322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR12; 14826322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR25) 14836322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR25; 14846322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR50) 14856322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR50; 14866322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR104) 14876322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR104; 14886322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_DDR50) 14896322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_DDR50; 14906322cdd0eb22e016aeced886c2046d115139c962Philip Rakity sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 14916322cdd0eb22e016aeced886c2046d115139c962Philip Rakity } 149249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 149349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Re-enable SD Clock */ 149449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clock = host->clock; 149549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath host->clock = 0; 149649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath sdhci_set_clock(host, clock); 1497758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else 1498758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1499d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1500b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo /* 1501b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * Some (ENE) controllers go apeshit on some ios operation, 1502b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * signalling timeout and CRC errors even on CMD0. Resetting 1503b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * it on each ios seems to solve the problem. 1504b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo */ 1505b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) 1506b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 1507b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 15085f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1509d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1510d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1511d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 151266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 151366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 151466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 151566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 151666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 151766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, ios); 151866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 151966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 152066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 152166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_check_ro(struct sdhci_host *host) 1522d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1523d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 15242dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang int is_readonly; 1525d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1526d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1527d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15281e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 15292dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = 0; 15302dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang else if (host->ops->get_ro) 15312dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = host->ops->get_ro(host); 15321e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman else 15332dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE) 15342dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang & SDHCI_WRITE_PROTECT); 1535d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1536d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1537d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15382dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang /* This quirk needs to be replaced by a callback-function later */ 15392dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang return host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT ? 15402dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang !is_readonly : is_readonly; 1541d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1542d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 154382b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai#define SAMPLE_COUNT 5 154482b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 154566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_do_get_ro(struct sdhci_host *host) 154682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai{ 154782b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai int i, ro_count; 154882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 154982b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT)) 155066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return sdhci_check_ro(host); 155182b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 155282b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai ro_count = 0; 155382b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai for (i = 0; i < SAMPLE_COUNT; i++) { 155466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (sdhci_check_ro(host)) { 155582b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (++ro_count > SAMPLE_COUNT / 2) 155682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 1; 155782b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 155882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai msleep(30); 155982b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 156082b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 0; 156182b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai} 156282b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 156320758b66dce76af0527363186f44b464d83e5666Adrian Hunterstatic void sdhci_hw_reset(struct mmc_host *mmc) 156420758b66dce76af0527363186f44b464d83e5666Adrian Hunter{ 156520758b66dce76af0527363186f44b464d83e5666Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 156620758b66dce76af0527363186f44b464d83e5666Adrian Hunter 156720758b66dce76af0527363186f44b464d83e5666Adrian Hunter if (host->ops && host->ops->hw_reset) 156820758b66dce76af0527363186f44b464d83e5666Adrian Hunter host->ops->hw_reset(host); 156920758b66dce76af0527363186f44b464d83e5666Adrian Hunter} 157020758b66dce76af0527363186f44b464d83e5666Adrian Hunter 157166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_get_ro(struct mmc_host *mmc) 1572f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman{ 157366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 157466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret; 1575f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 157666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 157766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter ret = sdhci_do_get_ro(host); 157866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 157966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 158066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 1581f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 158266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable) 158366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 15841e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 15851e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman goto out; 15861e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1587f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (enable) 158866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_SDIO_IRQ_ENABLED; 158966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter else 159066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_SDIO_IRQ_ENABLED; 159166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 159266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* SDIO IRQ will be enabled as appropriate in runtime resume */ 159366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) 159466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter goto out; 159566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 159666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (enable) 15977260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT); 15987260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov else 15997260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_mask_irqs(host, SDHCI_INT_CARD_INT); 16001e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanout: 1601f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmiowb(); 160266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 160366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 160466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) 160566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 160666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 160766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 1608f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 160966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 161066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, enable); 1611f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1612f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman} 1613f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 16146231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakitystatic int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host, 16156231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity u16 ctrl) 1616f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath{ 16176231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity int ret; 1618f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 16196231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ 16206231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity ctrl &= ~SDHCI_CTRL_VDD_180; 16216231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1622f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 16236231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (host->vqmmc) { 1624cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000); 16256231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (ret) { 16266231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity pr_warning("%s: Switching to 3.3V signalling voltage " 16276231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity " failed\n", mmc_hostname(host->mmc)); 16286231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return -EIO; 16296231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity } 16306231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity } 16316231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* Wait for 5ms */ 16326231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity usleep_range(5000, 5500); 16336231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 16346231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* 3.3V regulator output should be stable within 5 ms */ 1635f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 16366231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (!(ctrl & SDHCI_CTRL_VDD_180)) 16376231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return 0; 1638f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 16396231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity pr_warning("%s: 3.3V regulator output did not became stable\n", 16406231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity mmc_hostname(host->mmc)); 1641f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 16426231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return -EIO; 16436231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity} 1644f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 16456231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakitystatic int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host, 16466231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity u16 ctrl) 16476231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity{ 16486231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity u8 pwr; 16496231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity u16 clk; 16506231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity u32 present_state; 16516231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity int ret; 16526231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 16536231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* Stop SDCLK */ 16546231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 16556231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity clk &= ~SDHCI_CLOCK_CARD_EN; 16566231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 16576231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 16586231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* Check whether DAT[3:0] is 0000 */ 16596231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 16606231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (!((present_state & SDHCI_DATA_LVL_MASK) >> 16616231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity SDHCI_DATA_LVL_SHIFT)) { 16626231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* 16636231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * Enable 1.8V Signal Enable in the Host Control2 16646231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * register 16656231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity */ 16666231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (host->vqmmc) 16676231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity ret = regulator_set_voltage(host->vqmmc, 1668cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu 1700000, 1950000); 16696231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity else 16706231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity ret = 0; 16716231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 16726231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (!ret) { 1673f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl |= SDHCI_CTRL_VDD_180; 1674f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1675f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1676f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Wait for 5ms */ 1677f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath usleep_range(5000, 5500); 1678f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1679f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1680f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (ctrl & SDHCI_CTRL_VDD_180) { 16816231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* Provide SDCLK again and wait for 1ms */ 1682f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 1683f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath clk |= SDHCI_CLOCK_CARD_EN; 1684f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1685f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath usleep_range(1000, 1500); 1686f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1687f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 1688f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If DAT[3:0] level is 1111b, then the card 1689f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * was successfully switched to 1.8V signaling. 1690f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 1691f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath present_state = sdhci_readl(host, 1692f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_PRESENT_STATE); 1693f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if ((present_state & SDHCI_DATA_LVL_MASK) == 1694f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_DATA_LVL_MASK) 1695f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 1696f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 1697f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 16986231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity } 1699f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 17006231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* 17016231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * If we are here, that means the switch to 1.8V signaling 17026231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * failed. We power cycle the card, and retry initialization 17036231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * sequence by setting S18R to 0. 17046231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity */ 17056231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity pwr = sdhci_readb(host, SDHCI_POWER_CONTROL); 17066231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity pwr &= ~SDHCI_POWER_ON; 17076231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 17086231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (host->vmmc) 17096231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity regulator_disable(host->vmmc); 1710f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 17116231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* Wait for 1ms as per the spec */ 17126231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity usleep_range(1000, 1500); 17136231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity pwr |= SDHCI_POWER_ON; 17146231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 17156231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (host->vmmc) 17166231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity regulator_enable(host->vmmc); 1717f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 17186231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity pr_warning("%s: Switching to 1.8V signalling voltage failed, " 17196231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity "retrying with S18R set to 0\n", mmc_hostname(host->mmc)); 17206231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 17216231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return -EAGAIN; 17226231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity} 17236231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 17246231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakitystatic int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, 17256231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity struct mmc_ios *ios) 17266231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity{ 17276231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity u16 ctrl; 17286231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 17296231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* 17306231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * Signal Voltage Switching is only applicable for Host Controllers 17316231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * v3.00 and above. 17326231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity */ 17336231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (host->version < SDHCI_SPEC_300) 17346231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return 0; 17356231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 17366231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* 17376231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * We first check whether the request is to set signalling voltage 17386231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * to 3.3V. If so, we change the voltage to 3.3V and return quickly. 17396231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity */ 17406231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 17416231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) 17426231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return sdhci_do_3_3v_signal_voltage_switch(host, ctrl); 17436231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity else if (!(ctrl & SDHCI_CTRL_VDD_180) && 17446231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180)) 17456231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return sdhci_do_1_8v_signal_voltage_switch(host, ctrl); 17466231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity else 1747f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* No signal voltage switch required */ 1748f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 1749f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath} 1750f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 175166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, 175266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct mmc_ios *ios) 175366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 175466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 175566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int err; 175666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 175766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->version < SDHCI_SPEC_300) 175866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 175966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 176066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter err = sdhci_do_start_signal_voltage_switch(host, ios); 176166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 176266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return err; 176366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 176466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1765069c9f142822d552ec885572945d8bce9eff0519Girish K Sstatic int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) 1766b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath{ 1767b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath struct sdhci_host *host; 1768b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath u16 ctrl; 1769b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath u32 ier; 1770b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int tuning_loop_counter = MAX_TUNING_LOOP; 1771b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath unsigned long timeout; 1772b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int err = 0; 1773069c9f142822d552ec885572945d8bce9eff0519Girish K S bool requires_tuning_nonuhs = false; 1774b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1775b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host = mmc_priv(mmc); 1776b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 177766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 1778b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath disable_irq(host->irq); 1779b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_lock(&host->lock); 1780b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1781b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1782b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1783b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1784069c9f142822d552ec885572945d8bce9eff0519Girish K S * The Host Controller needs tuning only in case of SDR104 mode 1785069c9f142822d552ec885572945d8bce9eff0519Girish K S * and for SDR50 mode when Use Tuning for SDR50 is set in the 1786b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Capabilities register. 1787069c9f142822d552ec885572945d8bce9eff0519Girish K S * If the Host Controller supports the HS200 mode then the 1788069c9f142822d552ec885572945d8bce9eff0519Girish K S * tuning function has to be executed. 1789b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1790069c9f142822d552ec885572945d8bce9eff0519Girish K S if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) && 1791069c9f142822d552ec885572945d8bce9eff0519Girish K S (host->flags & SDHCI_SDR50_NEEDS_TUNING || 1792069c9f142822d552ec885572945d8bce9eff0519Girish K S host->flags & SDHCI_HS200_NEEDS_TUNING)) 1793069c9f142822d552ec885572945d8bce9eff0519Girish K S requires_tuning_nonuhs = true; 1794069c9f142822d552ec885572945d8bce9eff0519Girish K S 1795b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) || 1796069c9f142822d552ec885572945d8bce9eff0519Girish K S requires_tuning_nonuhs) 1797b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl |= SDHCI_CTRL_EXEC_TUNING; 1798b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath else { 1799b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_unlock(&host->lock); 1800b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath enable_irq(host->irq); 180166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 1802b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return 0; 1803b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1804b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1805b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1806b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1807b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1808b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * As per the Host Controller spec v3.00, tuning command 1809b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * generates Buffer Read Ready interrupt, so enable that. 1810b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * 1811b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Note: The spec clearly says that when tuning sequence 1812b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * is being performed, the controller does not generate 1813b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * interrupts other than Buffer Read Ready interrupt. But 1814b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to make sure we don't hit a controller bug, we _only_ 1815b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * enable Buffer Read Ready interrupt here. 1816b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1817b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ier = sdhci_readl(host, SDHCI_INT_ENABLE); 1818b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_clear_set_irqs(host, ier, SDHCI_INT_DATA_AVAIL); 1819b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1820b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1821b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Issue CMD19 repeatedly till Execute Tuning is set to 0 or the number 1822b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * of loops reaches 40 times or a timeout of 150ms occurs. 1823b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1824b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath timeout = 150; 1825b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath do { 1826b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath struct mmc_command cmd = {0}; 182766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct mmc_request mrq = {NULL}; 1828b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1829b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!tuning_loop_counter && !timeout) 1830b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath break; 1831b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1832069c9f142822d552ec885572945d8bce9eff0519Girish K S cmd.opcode = opcode; 1833b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.arg = 0; 1834b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1835b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.retries = 0; 1836b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.data = NULL; 1837b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.error = 0; 1838b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1839b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath mrq.cmd = &cmd; 1840b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = &mrq; 1841b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1842b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1843b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * In response to CMD19, the card sends 64 bytes of tuning 1844b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * block to the Host Controller. So we set the block size 1845b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to 64 here. 1846b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1847069c9f142822d552ec885572945d8bce9eff0519Girish K S if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200) { 1848069c9f142822d552ec885572945d8bce9eff0519Girish K S if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) 1849069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 128), 1850069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1851069c9f142822d552ec885572945d8bce9eff0519Girish K S else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) 1852069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), 1853069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1854069c9f142822d552ec885572945d8bce9eff0519Girish K S } else { 1855069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), 1856069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1857069c9f142822d552ec885572945d8bce9eff0519Girish K S } 1858b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1859b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1860b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The tuning block is sent by the card to the host controller. 1861b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * So we set the TRNS_READ bit in the Transfer Mode register. 1862b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * This also takes care of setting DMA Enable and Multi Block 1863b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Select in the same register to 0. 1864b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1865b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); 1866b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1867b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_send_command(host, &cmd); 1868b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1869b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->cmd = NULL; 1870b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = NULL; 1871b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1872b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_unlock(&host->lock); 1873b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath enable_irq(host->irq); 1874b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1875b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* Wait for Buffer Read Ready interrupt */ 1876b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wait_event_interruptible_timeout(host->buf_ready_int, 1877b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath (host->tuning_done == 1), 1878b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath msecs_to_jiffies(50)); 1879b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath disable_irq(host->irq); 1880b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_lock(&host->lock); 1881b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1882b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!host->tuning_done) { 1883a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Timeout waiting for " 1884b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "Buffer Read Ready interrupt during tuning " 1885b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "procedure, falling back to fixed sampling " 1886b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "clock\n"); 1887b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1888b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 1889b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_EXEC_TUNING; 1890b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1891b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1892b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = -EIO; 1893b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 1894b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1895b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1896b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 0; 1897b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1898b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1899b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath tuning_loop_counter--; 1900b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath timeout--; 1901b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath mdelay(1); 1902b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } while (ctrl & SDHCI_CTRL_EXEC_TUNING); 1903b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1904b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1905b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The Host Driver has exhausted the maximum number of loops allowed, 1906b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * so use fixed sampling frequency. 1907b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1908b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!tuning_loop_counter || !timeout) { 1909b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 1910b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1911b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } else { 1912b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) { 1913a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Tuning procedure" 1914b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath " failed, falling back to fixed sampling" 1915b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath " clock\n"); 1916b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = -EIO; 1917b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1918b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1919b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1920b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nathout: 1921cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1922cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * If this is the very first time we are here, we start the retuning 1923cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * timer. Since only during the first time, SDHCI_NEEDS_RETUNING 1924cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * flag won't be set, we check this condition before actually starting 1925cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * the timer. 1926cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1927cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (!(host->flags & SDHCI_NEEDS_RETUNING) && host->tuning_count && 1928cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath (host->tuning_mode == SDHCI_TUNING_MODE_1)) { 1929973905feab85416784f36cc94b868392fd465ef4Aaron Lu host->flags |= SDHCI_USING_RETUNING_TIMER; 1930cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mod_timer(&host->tuning_timer, jiffies + 1931cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count * HZ); 1932cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Tuning mode 1 limits the maximum data length to 4MB */ 1933cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mmc->max_blk_count = (4 * 1024 * 1024) / mmc->max_blk_size; 1934cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } else { 1935cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 1936cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Reload the new initial value for timer */ 1937cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->tuning_mode == SDHCI_TUNING_MODE_1) 1938cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mod_timer(&host->tuning_timer, jiffies + 1939cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count * HZ); 1940cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1941cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1942cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1943cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case tuning fails, host controllers which support re-tuning can 1944cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * try tuning again at a later time, when the re-tuning timer expires. 1945cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * So for these controllers, we return 0. Since there might be other 1946cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * controllers who do not have this capability, we return error for 1947973905feab85416784f36cc94b868392fd465ef4Aaron Lu * them. SDHCI_USING_RETUNING_TIMER means the host is currently using 1948973905feab85416784f36cc94b868392fd465ef4Aaron Lu * a retuning timer to do the retuning for the card. 1949cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1950973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (err && (host->flags & SDHCI_USING_RETUNING_TIMER)) 1951cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath err = 0; 1952cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1953b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_clear_set_irqs(host, SDHCI_INT_DATA_AVAIL, ier); 1954b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_unlock(&host->lock); 1955b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath enable_irq(host->irq); 195666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 1957b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1958b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return err; 1959b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath} 1960b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 196166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable) 19624d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath{ 19634d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath u16 ctrl; 19644d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath unsigned long flags; 19654d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 19664d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* Host Controller v3.00 defines preset value registers */ 19674d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->version < SDHCI_SPEC_300) 19684d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath return; 19694d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 19704d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath spin_lock_irqsave(&host->lock, flags); 19714d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 19724d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 19734d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 19744d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* 19754d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * We only enable or disable Preset Value if they are not already 19764d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * enabled or disabled respectively. Otherwise, we bail out. 19774d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath */ 19784d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (enable && !(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 19794d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl |= SDHCI_CTRL_PRESET_VAL_ENABLE; 19804d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 198166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_PV_ENABLED; 19824d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath } else if (!enable && (ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 19834d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl &= ~SDHCI_CTRL_PRESET_VAL_ENABLE; 19844d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 198566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_PV_ENABLED; 19864d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath } 19874d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 19884d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath spin_unlock_irqrestore(&host->lock, flags); 19894d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath} 19904d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 199166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable) 199266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 199366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 199466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 199566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 199666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_enable_preset_value(host, enable); 199766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 199866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 199966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 200071e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic void sdhci_card_event(struct mmc_host *mmc) 2001d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 200271e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski struct sdhci_host *host = mmc_priv(mmc); 2003d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2006d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 200766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Check host->mrq first in case we are runtime suspended */ 200866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->mrq && 200966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter !(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { 2010a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Card removed during transfer!\n", 201166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 2012a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Resetting controller.\n", 201366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 2014d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 201566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_reset(host, SDHCI_RESET_CMD); 201666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_reset(host, SDHCI_RESET_DATA); 2017d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 201866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->mrq->cmd->error = -ENOMEDIUM; 201966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter tasklet_schedule(&host->finish_tasklet); 2020d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2021d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2022d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 202371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski} 202471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 202571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic const struct mmc_host_ops sdhci_ops = { 202671e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .request = sdhci_request, 202771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .set_ios = sdhci_set_ios, 202871e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .get_ro = sdhci_get_ro, 202971e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .hw_reset = sdhci_hw_reset, 203071e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .enable_sdio_irq = sdhci_enable_sdio_irq, 203171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, 203271e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .execute_tuning = sdhci_execute_tuning, 203371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .enable_preset_value = sdhci_enable_preset_value, 203471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .card_event = sdhci_card_event, 203571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski}; 203671e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 203771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski/*****************************************************************************\ 203871e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * * 203971e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * Tasklets * 204071e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * * 204171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski\*****************************************************************************/ 204271e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 204371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic void sdhci_tasklet_card(unsigned long param) 204471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski{ 204571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski struct sdhci_host *host = (struct sdhci_host*)param; 204671e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 204771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski sdhci_card_event(host->mmc); 2048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 204904cf585d2902404ed06861c6dc27897100340dbaPierre Ossman mmc_detect_change(host->mmc, msecs_to_jiffies(200)); 2050d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2051d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2052d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_finish(unsigned long param) 2053d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2054d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2055d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2056d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_request *mrq; 2057d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2058d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 2059d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 206066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 206166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 20620c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball /* 20630c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * If this tasklet gets rescheduled while running, it will 20640c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * be run again afterwards but without any active request. 20650c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball */ 206666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (!host->mrq) { 206766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 20680c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball return; 206966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 2070d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2071d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer(&host->timer); 2072d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2073d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mrq = host->mrq; 2074d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2075d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2076d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 2077d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 2078d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 20791e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!(host->flags & SDHCI_DEVICE_DEAD) && 2080b7b4d3426d2b5ecab21578eb20d8e456a1aace8fBen Dooks ((mrq->cmd && mrq->cmd->error) || 20811e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data && (mrq->data->error || 20821e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data->stop && mrq->data->stop->error))) || 20831e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { 2084645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 2085645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Some controllers need this kick or reset won't work here */ 2086b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { 2087645289dca5021224279e67b4655796cafdfdad00Pierre Ossman unsigned int clock; 2088645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 2089645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* This is to force an update */ 2090645289dca5021224279e67b4655796cafdfdad00Pierre Ossman clock = host->clock; 2091645289dca5021224279e67b4655796cafdfdad00Pierre Ossman host->clock = 0; 2092645289dca5021224279e67b4655796cafdfdad00Pierre Ossman sdhci_set_clock(host, clock); 2093645289dca5021224279e67b4655796cafdfdad00Pierre Ossman } 2094645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 2095645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Spec says we should do both at the same time, but Ricoh 2096645289dca5021224279e67b4655796cafdfdad00Pierre Ossman controllers do not like that. */ 2097d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 2098d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 2099d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2100d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2101d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = NULL; 2102d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 2103d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 2104d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2105f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 2106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_deactivate_led(host); 21072f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 2108d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 21095f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2110d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2111d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2112d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_request_done(host->mmc, mrq); 211366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 2114d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2115d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2116d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_timeout_timer(unsigned long data) 2117d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)data; 2122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 2126a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Timeout waiting for hardware " 2127acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "interrupt.\n", mmc_hostname(host->mmc)); 2128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data) { 213117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 2132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 2134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd) 213517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 2136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 213717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ETIMEDOUT; 2138d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2142d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 21435f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2144d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2145d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2146d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2147cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data) 2148cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath{ 2149cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath struct sdhci_host *host; 2150cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath unsigned long flags; 2151cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2152cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host = (struct sdhci_host *)data; 2153cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2154cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_lock_irqsave(&host->lock, flags); 2155cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2156cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2157cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2158cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_unlock_irqrestore(&host->lock, flags); 2159cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath} 2160cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2163d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Interrupt handling * 2164d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2165d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2166d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2167d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) 2168d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2169d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2170d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2171d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->cmd) { 2172a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Got command interrupt 0x%08x even " 2173b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no command operation was in progress.\n", 2174b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2177d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2178d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 217943b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman if (intmask & SDHCI_INT_TIMEOUT) 218017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 218117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT | 218217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman SDHCI_INT_INDEX)) 218317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -EILSEQ; 218443b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman 2185e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->error) { 2186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2187e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2188e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2189e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2190e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman /* 2191e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The host can send and interrupt when the busy state has 2192e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * ended, allowing us to wait without wasting CPU cycles. 2193e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Unfortunately this is overloaded on the "data complete" 2194e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * interrupt, so we need to take some care when handling 2195e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * it. 2196e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * 2197e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Note: The 1.0 specification is a bit ambiguous about this 2198e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * feature so there might be some problems with older 2199e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * controllers. 2200e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman */ 2201e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->flags & MMC_RSP_BUSY) { 2202e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->data) 2203e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman DBG("Cannot wait for busy signal when also " 2204e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman "doing a data transfer"); 2205f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ)) 2206e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2207f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks 2208f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks /* The controller does not support the end-of-busy IRQ, 2209f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks * fall through and take the SDHCI_INT_RESPONSE */ 2210e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2211e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2212e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_RESPONSE) 221343b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman sdhci_finish_command(host); 2214d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2215d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22160957c3339efa333b7895157eb18b9b578394f80cGeorge G. Davis#ifdef CONFIG_MMC_DEBUG 22176882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) 22186882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks{ 22196882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks const char *name = mmc_hostname(host->mmc); 22206882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 *desc = host->adma_desc; 22216882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le32 *dma; 22226882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le16 *len; 22236882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 attr; 22246882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 22256882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_dumpregs(host); 22266882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 22276882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks while (true) { 22286882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks dma = (__le32 *)(desc + 4); 22296882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks len = (__le16 *)(desc + 2); 22306882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks attr = *desc; 22316882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 22326882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n", 22336882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr); 22346882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 22356882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks desc += 8; 22366882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 22376882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks if (attr & 2) 22386882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks break; 22396882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 22406882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks} 22416882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#else 22426882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) { } 22436882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#endif 22446882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 2245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 2246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2247069c9f142822d552ec885572945d8bce9eff0519Girish K S u32 command; 2248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2250b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 generates _only_ Buffer Read Ready interrupt */ 2251b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (intmask & SDHCI_INT_DATA_AVAIL) { 2252069c9f142822d552ec885572945d8bce9eff0519Girish K S command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)); 2253069c9f142822d552ec885572945d8bce9eff0519Girish K S if (command == MMC_SEND_TUNING_BLOCK || 2254069c9f142822d552ec885572945d8bce9eff0519Girish K S command == MMC_SEND_TUNING_BLOCK_HS200) { 2255b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 1; 2256b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wake_up(&host->buf_ready_int); 2257b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return; 2258b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2259b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2260b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->data) { 2262d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2263e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The "data complete" interrupt is also used to 2264e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * indicate that a busy state has ended. See comment 2265e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * above in sdhci_cmd_irq(). 2266d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2267e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) { 2268e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2269e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman sdhci_finish_command(host); 2270e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2271e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2272e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2273d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2274a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Got data interrupt 0x%08x even " 2275b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no data operation was in progress.\n", 2276b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2278d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2279d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2280d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2281d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_TIMEOUT) 228317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 228422113efd00491310da802f3b1a9a66cfcf415facAries Lee else if (intmask & SDHCI_INT_DATA_END_BIT) 228522113efd00491310da802f3b1a9a66cfcf415facAries Lee host->data->error = -EILSEQ; 228622113efd00491310da802f3b1a9a66cfcf415facAries Lee else if ((intmask & SDHCI_INT_DATA_CRC) && 228722113efd00491310da802f3b1a9a66cfcf415facAries Lee SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) 228822113efd00491310da802f3b1a9a66cfcf415facAries Lee != MMC_BUS_TEST_R) 228917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -EILSEQ; 22906882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks else if (intmask & SDHCI_INT_ADMA_ERROR) { 2291a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: ADMA error\n", mmc_hostname(host->mmc)); 22926882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_show_adma_error(host); 22932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->data->error = -EIO; 2294a4071fbbb9edbc5a24985b2f64ed45f35b90dbebHaijun Zhang if (host->ops->adma_workaround) 2295a4071fbbb9edbc5a24985b2f64ed45f35b90dbebHaijun Zhang host->ops->adma_workaround(host, intmask); 22966882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 2297d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 229817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (host->data->error) 2299d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2300d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 2301a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 2302d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_transfer_pio(host); 2303d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23046ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman /* 23056ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * We currently don't do anything fancy with DMA 23066ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * boundaries, but as we can't disable the feature 23076ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * we need to at least restart the transfer. 2308f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * 2309f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * According to the spec sdhci_readl(host, SDHCI_DMA_ADDRESS) 2310f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * should return a valid address to continue from, but as 2311f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * some controllers are faulty, don't trust them. 23126ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman */ 2313f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni if (intmask & SDHCI_INT_DMA_END) { 2314f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni u32 dmastart, dmanow; 2315f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmastart = sg_dma_address(host->data->sg); 2316f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = dmastart + host->data->bytes_xfered; 2317f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* 2318f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * Force update to the next DMA block boundary. 2319f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni */ 2320f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = (dmanow & 2321f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) + 2322f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni SDHCI_DEFAULT_BOUNDARY_SIZE; 2323f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = dmanow - dmastart; 2324f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni DBG("%s: DMA base 0x%08x, transferred 0x%06x bytes," 2325f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni " next 0x%08x\n", 2326f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni mmc_hostname(host->mmc), dmastart, 2327f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered, dmanow); 2328f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); 2329f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni } 23306ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman 2331e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2332e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->cmd) { 2333e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman /* 2334e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * Data managed to finish before the 2335e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * command completed. Make sure we do 2336e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * things in the proper order. 2337e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman */ 2338e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data_early = 1; 2339e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } else { 2340e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 2341e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2342e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2343d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2344d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2345d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23467d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t sdhci_irq(int irq, void *dev_id) 2347d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2348d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman irqreturn_t result; 234966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = dev_id; 23506379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein u32 intmask, unexpected = 0; 23516379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein int cardint = 0, max_loops = 16; 2352d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2353d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock(&host->lock); 2354d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 235566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) { 235666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock(&host->lock); 2357a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: got irq while runtime suspended\n", 235866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 235966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return IRQ_HANDLED; 236066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 236166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 23624e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov intmask = sdhci_readl(host, SDHCI_INT_STATUS); 2363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 236462df67a523acd7a22d936bf946b1889dbd60ca98Mark Lord if (!intmask || intmask == 0xffffffff) { 2365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_NONE; 2366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 2367d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2368d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23696379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Steinagain: 2370b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman DBG("*** %s got interrupt: 0x%08x\n", 2371b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(host->mmc), intmask); 2372d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23733192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 2374d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 2375d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_CARD_PRESENT; 2376d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 2377d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo /* 2378d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * There is a observation on i.mx esdhc. INSERT bit will be 2379d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * immediately set again when it gets cleared, if a card is 2380d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * inserted. We have to mask the irq to prevent interrupt 2381d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * storm which will freeze the system. And the REMOVE gets 2382d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * the same situation. 2383d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * 2384d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * More testing are needed here to ensure it works for other 2385d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * platforms though. 2386d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo */ 2387d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo sdhci_mask_irqs(host, present ? SDHCI_INT_CARD_INSERT : 2388d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_REMOVE); 2389d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo sdhci_unmask_irqs(host, present ? SDHCI_INT_CARD_REMOVE : 2390d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_INSERT); 2391d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 23924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT | 2393d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_REMOVE), SDHCI_INT_STATUS); 2394d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE); 2395d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->card_tasklet); 23963192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 2397d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23983192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & SDHCI_INT_CMD_MASK) { 23994e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK, 24004e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 24013192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK); 2402d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2403d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2404d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_MASK) { 24054e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_DATA_MASK, 24064e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 24073192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); 2408d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2409d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2410d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK); 2411d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2412964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman intmask &= ~SDHCI_INT_ERROR; 2413964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman 2414d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_BUS_POWER) { 2415a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Card is consuming too much power!\n", 2416d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 24174e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, SDHCI_INT_BUS_POWER, SDHCI_INT_STATUS); 2418d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2419d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24209d26a5d3f2b9c4fe4b2ba491683c6989ecd6ae04Rolf Eike Beer intmask &= ~SDHCI_INT_BUS_POWER; 24213192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman 2422f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (intmask & SDHCI_INT_CARD_INT) 2423f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman cardint = 1; 2424f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 2425f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman intmask &= ~SDHCI_INT_CARD_INT; 2426f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 24273192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask) { 24286379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein unexpected |= intmask; 24294e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask, SDHCI_INT_STATUS); 24303192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 2431d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2432d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_HANDLED; 2433d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24346379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein intmask = sdhci_readl(host, SDHCI_INT_STATUS); 24356379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein if (intmask && --max_loops) 24366379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein goto again; 2437d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 2438d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock(&host->lock); 2439d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24406379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein if (unexpected) { 24416379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein pr_err("%s: Unexpected interrupt 0x%08x.\n", 24426379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein mmc_hostname(host->mmc), unexpected); 24436379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein sdhci_dumpregs(host); 24446379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein } 2445f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman /* 2446f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman * We have to delay this as it calls back into the driver. 2447f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman */ 2448f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (cardint) 2449f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmc_signal_sdio_irq(host->mmc); 2450f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 2451d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return result; 2452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2453d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2454d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2455d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2456d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Suspend/resume * 2457d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2458d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2459d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2460d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_PM 2461d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 246229495aa04a30c21565243c5b9c028510446d242cManuel Laussint sdhci_suspend_host(struct sdhci_host *host) 2463d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2464b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2465a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 2466a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball if (host->ops->platform_suspend) 2467a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball host->ops->platform_suspend(host); 2468a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball 24697260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 24707260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2471cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Disable tuning since we are suspending */ 2472973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 2473c6ced0db08010ed75df221a2946c5228454b38d5Aaron Lu del_timer_sync(&host->tuning_timer); 2474cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 2475cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 2476cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 24771a13f8fa76c880be41d6b1e6a2b44404bcbfdf9eMatt Fleming ret = mmc_suspend_host(host->mmc); 247838a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu if (ret) { 2479973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 248038a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu host->flags |= SDHCI_NEEDS_RETUNING; 248138a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu mod_timer(&host->tuning_timer, jiffies + 248238a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu host->tuning_count * HZ); 248338a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu } 248438a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu 248538a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu sdhci_enable_card_detection(host); 248638a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu 2487b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ret; 248838a60ea2e7b33ab33ee11d6ef527f259edb102cfAaron Lu } 2489a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 2490b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman free_irq(host->irq, host); 2491d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24929bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski return ret; 2493d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2494d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2495b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_suspend_host); 2496d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2497b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_resume_host(struct sdhci_host *host) 2498b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 2499b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2500d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2501a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2502b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) 2503b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->ops->enable_dma(host); 2504b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2505d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2506b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 2507b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(host->mmc), host); 2508df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman if (ret) 2509df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman return ret; 2510d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25116308d2905bd30290d90f28730828fd572161dd11Adrian Hunter if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) && 25126308d2905bd30290d90f28730828fd572161dd11Adrian Hunter (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) { 25136308d2905bd30290d90f28730828fd572161dd11Adrian Hunter /* Card keeps power but host controller does not */ 25146308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_init(host, 0); 25156308d2905bd30290d90f28730828fd572161dd11Adrian Hunter host->pwr = 0; 25166308d2905bd30290d90f28730828fd572161dd11Adrian Hunter host->clock = 0; 25176308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_do_set_ios(host, &host->mmc->ios); 25186308d2905bd30290d90f28730828fd572161dd11Adrian Hunter } else { 25196308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); 25206308d2905bd30290d90f28730828fd572161dd11Adrian Hunter mmiowb(); 25216308d2905bd30290d90f28730828fd572161dd11Adrian Hunter } 2522b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman 2523b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = mmc_resume_host(host->mmc); 25247260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 25257260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2526a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball if (host->ops->platform_resume) 2527a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball host->ops->platform_resume(host); 2528a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball 2529cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Set the re-tuning expiration flag */ 2530973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) 2531cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2532cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 25332f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre return ret; 2534d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2535d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2536b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_resume_host); 2537d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25385f619704d18b93869d045abc49e09cdba109b04bDaniel Drakevoid sdhci_enable_irq_wakeups(struct sdhci_host *host) 25395f619704d18b93869d045abc49e09cdba109b04bDaniel Drake{ 25405f619704d18b93869d045abc49e09cdba109b04bDaniel Drake u8 val; 25415f619704d18b93869d045abc49e09cdba109b04bDaniel Drake val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); 25425f619704d18b93869d045abc49e09cdba109b04bDaniel Drake val |= SDHCI_WAKE_ON_INT; 25435f619704d18b93869d045abc49e09cdba109b04bDaniel Drake sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); 25445f619704d18b93869d045abc49e09cdba109b04bDaniel Drake} 25455f619704d18b93869d045abc49e09cdba109b04bDaniel Drake 25465f619704d18b93869d045abc49e09cdba109b04bDaniel DrakeEXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); 25475f619704d18b93869d045abc49e09cdba109b04bDaniel Drake 2548d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif /* CONFIG_PM */ 2549d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 255066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 255166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 255266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host) 255366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 255466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_get_sync(host->mmc->parent); 255566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 255666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 255766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host) 255866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 255966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter pm_runtime_mark_last_busy(host->mmc->parent); 256066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_put_autosuspend(host->mmc->parent); 256166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 256266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 256366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_suspend_host(struct sdhci_host *host) 256466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 256566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 256666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret = 0; 256766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 256866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Disable tuning since we are suspending */ 2569973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 257066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter del_timer_sync(&host->tuning_timer); 257166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_NEEDS_RETUNING; 257266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 257366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 257466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 257566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); 257666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 257766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 257866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter synchronize_irq(host->irq); 257966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 258066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 258166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = true; 258266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 258366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 258466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 258566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 258666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_suspend_host); 258766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 258866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_resume_host(struct sdhci_host *host) 258966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 259066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 259166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret = 0, host_flags = host->flags; 259266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 259366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host_flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 259466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->ops->enable_dma) 259566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->ops->enable_dma(host); 259666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 259766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 259866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_init(host, 0); 259966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 260066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Force clock and power re-program */ 260166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->pwr = 0; 260266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->clock = 0; 260366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, &host->mmc->ios); 260466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 260566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios); 260666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host_flags & SDHCI_PV_ENABLED) 260766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_enable_preset_value(host, true); 260866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 260966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Set the re-tuning expiration flag */ 2610973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) 261166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_NEEDS_RETUNING; 261266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 261366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 261466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 261566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = false; 261666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 261766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable SDIO IRQ */ 261866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if ((host->flags & SDHCI_SDIO_IRQ_ENABLED)) 261966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, true); 262066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 262166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable Card Detection */ 262266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_card_detection(host); 262366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 262466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 262566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 262666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 262766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 262866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_resume_host); 262966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 263066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 263166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2632d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2633d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2634b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman * Device allocation/registration * 2635d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2636d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2637d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2638b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanstruct sdhci_host *sdhci_alloc_host(struct device *dev, 2639b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman size_t priv_size) 2640d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2641d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 2642d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2643d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2644b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(dev == NULL); 2645d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2646b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev); 2647d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!mmc) 2648b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ERR_PTR(-ENOMEM); 2649d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2650d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 2651d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mmc = mmc; 2652d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2653b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return host; 2654b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman} 26558a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 2656b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_alloc_host); 2657d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2658b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_add_host(struct sdhci_host *host) 2659b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 2660b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman struct mmc_host *mmc; 2661bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity u32 caps[2] = {0, 0}; 2662f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u32 max_current_caps; 2663f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath unsigned int ocr_avail; 2664b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2665d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2666b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(host == NULL); 2667b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host == NULL) 2668b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -EINVAL; 2669d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2670b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = host->mmc; 2671d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2672b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (debug_quirks) 2673b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->quirks = debug_quirks; 267466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (debug_quirks2) 267566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->quirks2 = debug_quirks2; 2676d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2677d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 2678d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman 26794e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->version = sdhci_readw(host, SDHCI_HOST_VERSION); 26802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version = (host->version & SDHCI_SPEC_VER_MASK) 26812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman >> SDHCI_SPEC_VER_SHIFT; 268285105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version > SDHCI_SPEC_300) { 2683a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Unknown controller version (%d). " 2684b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "You may experience problems.\n", mmc_hostname(mmc), 26852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version); 26864a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman } 26874a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman 2688f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath caps[0] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps : 2689ccc92c23240cdf952ef7cc39ba563910dcbc9cbeMaxim Levitsky sdhci_readl(host, SDHCI_CAPABILITIES); 2690d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2691bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity if (host->version >= SDHCI_SPEC_300) 2692bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity caps[1] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? 2693bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity host->caps1 : 2694bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity sdhci_readl(host, SDHCI_CAPABILITIES_1); 2695f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2696b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_FORCE_DMA) 2697a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2698f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath else if (!(caps[0] & SDHCI_CAN_DO_SDMA)) 2699a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors DBG("Controller doesn't have SDMA capability\n"); 27006743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else 2701a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2702d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2703b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) && 2704a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA)) { 2705cee687ce4ab1197e20d4dacc09df01531362fdbdRolf Eike Beer DBG("Disabling DMA as it is marked broken\n"); 2706a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= ~SDHCI_USE_SDMA; 27077c168e3db7d900008ee304574057e0dc1a8505afFeng Tang } 27087c168e3db7d900008ee304574057e0dc1a8505afFeng Tang 2709f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if ((host->version >= SDHCI_SPEC_200) && 2710f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath (caps[0] & SDHCI_CAN_DO_ADMA2)) 2711a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_ADMA; 27122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 27132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) && 27142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) { 27152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Disabling ADMA as it is marked broken\n"); 27162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 27172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 27182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 2719a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2720b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) { 2721b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma(host)) { 2722a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: No suitable DMA " 2723b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman "available. Falling back to PIO.\n", 2724b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(mmc)); 2725a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= 2726a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA); 2727b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2728d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2729d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2730d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 27312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 27322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 27332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We need to allocate descriptors for all sg entries 27342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (128) and potentially one alignment transfer for 27352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * each of those entries. 27362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 27372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = kmalloc((128 * 2 + 1) * 4, GFP_KERNEL); 27382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = kmalloc(128 * 4, GFP_KERNEL); 27392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (!host->adma_desc || !host->align_buffer) { 27402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 27412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 2742a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Unable to allocate ADMA " 27432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "buffers. Falling back to standard DMA.\n", 27442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc_hostname(mmc)); 27452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 27462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 27472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 27482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 27497659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman /* 27507659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * If we use DMA, then it's up to the caller to set the DMA 27517659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask, but PIO does not need the hw shim so we set a new 27527659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask here in that case. 27537659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman */ 2754a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) { 27557659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->dma_mask = DMA_BIT_MASK(64); 27567659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman mmc_dev(host->mmc)->dma_mask = &host->dma_mask; 27577659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman } 2758d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2759c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao if (host->version >= SDHCI_SPEC_300) 2760f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_V3_BASE_MASK) 2761c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2762c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao else 2763f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_BASE_MASK) 2764c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2765c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao 27664240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk *= 1000000; 2767f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov if (host->max_clk == 0 || host->quirks & 2768f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN) { 27694240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks if (!host->ops->get_max_clock) { 2770a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't specify base clock " 27714240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "frequency.\n", mmc_hostname(mmc)); 27724240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks return -ENODEV; 27734240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks } 27744240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk = host->ops->get_max_clock(host); 27758ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman } 2776d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2777d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2778c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case of Host Controller v3.00, find out whether clock 2779c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is supported. 2780c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2781c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul = (caps[1] & SDHCI_CLOCK_MUL_MASK) >> 2782c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath SDHCI_CLOCK_MUL_SHIFT; 2783c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2784c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2785c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case the value in Clock Multiplier is 0, then programmable 2786c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * clock mode is not supported, otherwise the actual clock 2787c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is one more than the value of Clock Multiplier 2788c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * in the Capabilities Register. 2789c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2790c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) 2791c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul += 1; 2792c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2793c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2794d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Set host parameters. 2795d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2796d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->ops = &sdhci_ops; 2797c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk; 2798ce5f036bbbfc6c21d7b55b8fdaa2e2bd56392d94Marek Szyprowski if (host->ops->get_min_clock) 2799a9e58f25734e153b8c6516d904e2398fb8b0b23dAnton Vorontsov mmc->f_min = host->ops->get_min_clock(host); 2800c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else if (host->version >= SDHCI_SPEC_300) { 2801c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 2802c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = (host->max_clk * host->clk_mul) / 1024; 2803c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk * host->clk_mul; 2804c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 2805c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300; 2806c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 28070397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200; 280815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity 2809272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk = 2810272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; 2811272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->timeout_clk == 0) { 2812272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->ops->get_timeout_clock) { 2813272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk = host->ops->get_timeout_clock(host); 2814272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } else if (!(host->quirks & 2815272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) { 2816a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't specify timeout clock " 2817272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko "frequency.\n", mmc_hostname(mmc)); 2818272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko return -ENODEV; 2819272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } 2820272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } 2821272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) 2822272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk *= 1000; 2823272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 2824272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) 282565be3fef930beb3e282e7f23dfba63289971430cAndy Shevchenko host->timeout_clk = mmc->f_max / 1000; 2826272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 282765be3fef930beb3e282e7f23dfba63289971430cAndy Shevchenko mmc->max_discard_to = (1 << 27) / host->timeout_clk; 282858d1246db340793c408b22884598e4ce4d1d4abaAdrian Hunter 2829e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; 2830e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 2831e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) 2832e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->flags |= SDHCI_AUTO_CMD12; 28335fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov 28348edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin /* Auto-CMD23 stuff only works in ADMA or PIO. */ 28354f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin if ((host->version >= SDHCI_SPEC_300) && 28368edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin ((host->flags & SDHCI_USE_ADMA) || 28374f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin !(host->flags & SDHCI_USE_SDMA))) { 28388edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin host->flags |= SDHCI_AUTO_CMD23; 28398edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc)); 28408edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } else { 28418edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 unavailable\n", mmc_hostname(mmc)); 28428edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 28438edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 284415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity /* 284515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * A controller may support 8-bit width, but the board itself 284615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * might not have the pins brought out. Boards that support 284715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * 8-bit width must set "mmc->caps |= MMC_CAP_8_BIT_DATA;" in 284815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * their platform code before calling sdhci_add_host(), and we 284915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * won't assume 8-bit width for hosts without that CAP. 285015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity */ 28515fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) 285215ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity mmc->caps |= MMC_CAP_4_BIT_DATA; 2853d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 285463ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang if (host->quirks2 & SDHCI_QUIRK2_HOST_NO_CMD23) 285563ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang mmc->caps &= ~MMC_CAP_CMD23; 285663ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang 2857f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_DO_HISPD) 2858a29e7e18bddde778deb2cb101dbceca56b15e05eZhangfei Gao mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; 2859cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 2860176d1ed426a2a73a87c62a8aa05f6d002353cd50Jaehoon Chung if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) && 2861eb6d5ae1c918cefbfe06f6f96e1a75f2179d82ceDaniel Drake !(host->mmc->caps & MMC_CAP_NONREMOVABLE)) 286268d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov mmc->caps |= MMC_CAP_NEEDS_POLL; 286368d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 28646231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* If vqmmc regulator and no 1.8V signalling, then there's no UHS */ 28656231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity host->vqmmc = regulator_get(mmc_dev(mmc), "vqmmc"); 2866657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (IS_ERR_OR_NULL(host->vqmmc)) { 2867657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (PTR_ERR(host->vqmmc) < 0) { 2868657d59823c095e8f03e2744d765f53700331ff8fKevin Liu pr_info("%s: no vqmmc regulator found\n", 2869657d59823c095e8f03e2744d765f53700331ff8fKevin Liu mmc_hostname(mmc)); 2870657d59823c095e8f03e2744d765f53700331ff8fKevin Liu host->vqmmc = NULL; 2871657d59823c095e8f03e2744d765f53700331ff8fKevin Liu } 28728363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu } else { 28736231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity regulator_enable(host->vqmmc); 2874cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu if (!regulator_is_supported_voltage(host->vqmmc, 1700000, 2875cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu 1950000)) 28768363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu caps[1] &= ~(SDHCI_SUPPORT_SDR104 | 28778363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu SDHCI_SUPPORT_SDR50 | 28788363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu SDHCI_SUPPORT_DDR50); 28798363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu } 28806231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 28816a66180a252f5856fc25de69c6313831f343f50fDaniel Drake if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) 28826a66180a252f5856fc25de69c6313831f343f50fDaniel Drake caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | 28836a66180a252f5856fc25de69c6313831f343f50fDaniel Drake SDHCI_SUPPORT_DDR50); 28846a66180a252f5856fc25de69c6313831f343f50fDaniel Drake 28854188bba0e9e7ba58d231b528df495666f2742b74Al Cooper /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ 28864188bba0e9e7ba58d231b528df495666f2742b74Al Cooper if (caps[1] & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | 28874188bba0e9e7ba58d231b528df495666f2742b74Al Cooper SDHCI_SUPPORT_DDR50)) 2888f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; 2889f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2890f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* SDR104 supports also implies SDR50 support */ 2891f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[1] & SDHCI_SUPPORT_SDR104) 2892f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50; 2893f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath else if (caps[1] & SDHCI_SUPPORT_SDR50) 2894f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR50; 2895f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2896f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[1] & SDHCI_SUPPORT_DDR50) 2897f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_DDR50; 2898f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2899069c9f142822d552ec885572945d8bce9eff0519Girish K S /* Does the host need tuning for SDR50? */ 2900b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (caps[1] & SDHCI_USE_SDR50_TUNING) 2901b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->flags |= SDHCI_SDR50_NEEDS_TUNING; 2902b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2903069c9f142822d552ec885572945d8bce9eff0519Girish K S /* Does the host need tuning for HS200? */ 2904069c9f142822d552ec885572945d8bce9eff0519Girish K S if (mmc->caps2 & MMC_CAP2_HS200) 2905069c9f142822d552ec885572945d8bce9eff0519Girish K S host->flags |= SDHCI_HS200_NEEDS_TUNING; 2906069c9f142822d552ec885572945d8bce9eff0519Girish K S 2907d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Driver Type(s) (A, C, D) supported by the host */ 2908d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_A) 2909d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_A; 2910d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_C) 2911d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_C; 2912d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_D) 2913d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_D; 2914d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 2915cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initial value for re-tuning timer count */ 2916cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >> 2917cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_TIMER_COUNT_SHIFT; 2918cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2919cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 2920cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case Re-tuning Timer is not disabled, the actual value of 2921cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * re-tuning timer will be 2 ^ (n - 1). 2922cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 2923cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->tuning_count) 2924cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = 1 << (host->tuning_count - 1); 2925cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2926cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Re-tuning mode supported by the Host Controller */ 2927cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_mode = (caps[1] & SDHCI_RETUNING_MODE_MASK) >> 2928cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_MODE_SHIFT; 2929cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 29308f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail = 0; 2931bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 2932bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity host->vmmc = regulator_get(mmc_dev(mmc), "vmmc"); 2933657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (IS_ERR_OR_NULL(host->vmmc)) { 2934657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (PTR_ERR(host->vmmc) < 0) { 2935657d59823c095e8f03e2744d765f53700331ff8fKevin Liu pr_info("%s: no vmmc regulator found\n", 2936657d59823c095e8f03e2744d765f53700331ff8fKevin Liu mmc_hostname(mmc)); 2937657d59823c095e8f03e2744d765f53700331ff8fKevin Liu host->vmmc = NULL; 2938657d59823c095e8f03e2744d765f53700331ff8fKevin Liu } 29398363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu } 2940bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 294168737043bb155b42d54943d25153b901fd16e535Philip Rakity#ifdef CONFIG_REGULATOR 294268737043bb155b42d54943d25153b901fd16e535Philip Rakity if (host->vmmc) { 2943cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu ret = regulator_is_supported_voltage(host->vmmc, 2700000, 2944cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu 3600000); 294568737043bb155b42d54943d25153b901fd16e535Philip Rakity if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330))) 294668737043bb155b42d54943d25153b901fd16e535Philip Rakity caps[0] &= ~SDHCI_CAN_VDD_330; 294768737043bb155b42d54943d25153b901fd16e535Philip Rakity if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300))) 294868737043bb155b42d54943d25153b901fd16e535Philip Rakity caps[0] &= ~SDHCI_CAN_VDD_300; 2949cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu ret = regulator_is_supported_voltage(host->vmmc, 1700000, 2950cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu 1950000); 295168737043bb155b42d54943d25153b901fd16e535Philip Rakity if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180))) 295268737043bb155b42d54943d25153b901fd16e535Philip Rakity caps[0] &= ~SDHCI_CAN_VDD_180; 295368737043bb155b42d54943d25153b901fd16e535Philip Rakity } 295468737043bb155b42d54943d25153b901fd16e535Philip Rakity#endif /* CONFIG_REGULATOR */ 295568737043bb155b42d54943d25153b901fd16e535Philip Rakity 2956f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 2957f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * According to SD Host Controller spec v3.00, if the Host System 2958f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * can afford more than 150mA, Host Driver should set XPC to 1. Also 2959f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * the value is meaningful only if Voltage Support in the Capabilities 2960f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * register is set. The actual current value is 4 times the register 2961f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * value. 2962f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 2963f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT); 2964bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity if (!max_current_caps && host->vmmc) { 2965bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity u32 curr = regulator_get_current_limit(host->vmmc); 2966bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity if (curr > 0) { 2967bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 2968bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity /* convert to SDHCI_MAX_CURRENT format */ 2969bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = curr/1000; /* convert to mA */ 2970bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = curr/SDHCI_MAX_CURRENT_MULTIPLIER; 2971bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 2972bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = min_t(u32, curr, SDHCI_MAX_CURRENT_LIMIT); 2973bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity max_current_caps = 2974bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_330_SHIFT) | 2975bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_300_SHIFT) | 2976bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_180_SHIFT); 2977bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity } 2978bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity } 2979f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2980f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_330) { 29818f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_32_33 | MMC_VDD_33_34; 2982f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 298355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_330 = ((max_current_caps & 2984f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_MASK) >> 2985f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_SHIFT) * 2986f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 2987f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 2988f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_300) { 29898f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_29_30 | MMC_VDD_30_31; 2990f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 299155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_300 = ((max_current_caps & 2992f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_MASK) >> 2993f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_SHIFT) * 2994f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 2995f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 2996f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_180) { 29978f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_165_195; 29988f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai 299955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_180 = ((max_current_caps & 3000f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_MASK) >> 3001f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_SHIFT) * 3002f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 3003f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 3004f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 30058f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail = ocr_avail; 30068f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio = ocr_avail; 30078f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sdio) 30088f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio &= host->ocr_avail_sdio; 30098f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd = ocr_avail; 30108f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 30118f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= host->ocr_avail_sd; 30128f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai else /* normal SD controllers don't support 1.8V */ 30138f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= ~MMC_VDD_165_195; 30148f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc = ocr_avail; 30158f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_mmc) 30168f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc &= host->ocr_avail_mmc; 3017146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 3018146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (mmc->ocr_avail == 0) { 3019a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't report any " 3020b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "support voltages.\n", mmc_hostname(mmc)); 3021b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -ENODEV; 3022146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 3023146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 3024d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_init(&host->lock); 3025d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3026d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 30272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Maximum number of segments. Depends on if the hardware 30282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * can do scatter/gather or not. 3029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 30302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 3031a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 3032a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors else if (host->flags & SDHCI_USE_SDMA) 3033a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 1; 30342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else /* PIO */ 3035a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 3036d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3037d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3038bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman * Maximum number of sectors in one transfer. Limited by DMA boundary 303955db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * size (512KiB). 3040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 304155db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_req_size = 524288; 3042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3043d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum segment size. Could be one segment with the maximum number 30452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * of bytes. When doing hardware scatter/gather, each entry cannot 30462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * be larger than 64 KiB though. 3047d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 304830652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->flags & SDHCI_USE_ADMA) { 304930652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC) 305030652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65535; 305130652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson else 305230652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65536; 305330652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } else { 30542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_seg_size = mmc->max_req_size; 305530652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } 3056d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3057d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3058fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * Maximum block size. This varies from controller to controller and 3059fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * is specified in the capabilities register. 3060fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman */ 30610633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) { 30620633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 2; 30630633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } else { 3064f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >> 30650633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov SDHCI_MAX_BLOCK_SHIFT; 30660633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (mmc->max_blk_size >= 3) { 3067a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Invalid maximum block size, " 30680633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov "assuming 512 bytes\n", mmc_hostname(mmc)); 30690633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 0; 30700633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 30710633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 30720633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov 30730633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 512 << mmc->max_blk_size; 3074fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman 3075fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman /* 307655db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * Maximum block count. 307755db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman */ 30781388eefd5a5e6aaa3cb04070bfc2b944c1d24b82Ben Dooks mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 307955db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman 308055db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman /* 3081d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Init tasklets. 3082d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 3083d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->card_tasklet, 3084d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_card, (unsigned long)host); 3085d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->finish_tasklet, 3086d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_finish, (unsigned long)host); 3087d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3088e4cad1b5a4851c90c1bcf460062074a2fa10815bAl Viro setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); 3089d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3090cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->version >= SDHCI_SPEC_300) { 3091b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath init_waitqueue_head(&host->buf_ready_int); 3092b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 3093cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initialize re-tuning timer */ 3094cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath init_timer(&host->tuning_timer); 3095cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.data = (unsigned long)host; 3096cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.function = sdhci_tuning_timer; 3097cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 3098cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 3099dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 3100b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(mmc), host); 31010fc81ee3102efedd4571e28372d2242c694c67ecMark Brown if (ret) { 31020fc81ee3102efedd4571e28372d2242c694c67ecMark Brown pr_err("%s: Failed to request IRQ %d: %d\n", 31030fc81ee3102efedd4571e28372d2242c694c67ecMark Brown mmc_hostname(mmc), host->irq, ret); 31048ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto untasklet; 31050fc81ee3102efedd4571e28372d2242c694c67ecMark Brown } 3106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 31072f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 3108d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_MMC_DEBUG 3110d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 3111d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif 3112d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3113f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 31145dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa snprintf(host->led_name, sizeof(host->led_name), 31155dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa "%s::", mmc_hostname(mmc)); 31165dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa host->led.name = host->led_name; 31172f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness = LED_OFF; 31182f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.default_trigger = mmc_hostname(mmc); 31192f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness_set = sdhci_led_control; 31202f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 3121b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = led_classdev_register(mmc_dev(mmc), &host->led); 31220fc81ee3102efedd4571e28372d2242c694c67ecMark Brown if (ret) { 31230fc81ee3102efedd4571e28372d2242c694c67ecMark Brown pr_err("%s: Failed to register LED device: %d\n", 31240fc81ee3102efedd4571e28372d2242c694c67ecMark Brown mmc_hostname(mmc), ret); 31252f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman goto reset; 31260fc81ee3102efedd4571e28372d2242c694c67ecMark Brown } 31272f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 31282f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 31295f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 31305f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman 3131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_add_host(mmc); 3132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3133a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info("%s: SDHCI controller on %s [%s] using %s\n", 3134d1b268630875a7713b5d468a0c03403c5b721c8eKay Sievers mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)), 3135a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_ADMA) ? "ADMA" : 3136a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO"); 3137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 31387260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 31397260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 3140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 3141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3142f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 31432f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanreset: 31442f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 31452f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman free_irq(host->irq, host); 31462f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 31478ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanuntasklet: 3148d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 3149d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 3150d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3151d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 3152d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3153d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3154b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_add_host); 3155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 31561e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanvoid sdhci_remove_host(struct sdhci_host *host, int dead) 3157b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 31581e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman unsigned long flags; 31591e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 31601e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (dead) { 31611e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_lock_irqsave(&host->lock, flags); 31621e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 31631e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->flags |= SDHCI_DEVICE_DEAD; 31641e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 31651e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->mrq) { 3166a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Controller removed during " 31671e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman " transfer!\n", mmc_hostname(host->mmc)); 31681e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 31691e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 31701e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman tasklet_schedule(&host->finish_tasklet); 31711e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 31721e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 31731e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 31741e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 31751e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 31767260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 31777260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 3178b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_remove_host(host->mmc); 3179d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3180f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 31812f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman led_classdev_unregister(&host->led); 31822f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 31832f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 31841e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!dead) 31851e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 3186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman free_irq(host->irq, host); 3188d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer_sync(&host->timer); 3190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 3192d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 31932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 319477dcb3f4c344d4c9619803848f1aba4d271dac7bPhilip Rakity if (host->vmmc) { 319577dcb3f4c344d4c9619803848f1aba4d271dac7bPhilip Rakity regulator_disable(host->vmmc); 31969bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski regulator_put(host->vmmc); 319777dcb3f4c344d4c9619803848f1aba4d271dac7bPhilip Rakity } 31989bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski 31996231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (host->vqmmc) { 32006231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity regulator_disable(host->vqmmc); 32016231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity regulator_put(host->vqmmc); 32026231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity } 32036231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 32042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 32052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 32062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 32072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = NULL; 32082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = NULL; 3209d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3210d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3211b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_remove_host); 3212d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3213b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanvoid sdhci_free_host(struct sdhci_host *host) 3214d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3215b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_free_host(host->mmc); 3216d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3218b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_free_host); 3219d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 3221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Driver init/exit * 3223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 3225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __init sdhci_drv_init(void) 3227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3228a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME 322952fbf9c976b36654e08e94c3107ddbaac7e2da33Pierre Ossman ": Secure Digital Host Controller Interface driver\n"); 3230a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); 3231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3232b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return 0; 3233d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3235d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __exit sdhci_drv_exit(void) 3236d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3237d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3238d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_init(sdhci_drv_init); 3240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_exit(sdhci_drv_exit); 3241d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3242df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanmodule_param(debug_quirks, uint, 0444); 324366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Huntermodule_param(debug_quirks2, uint, 0444); 32446743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 324532710e8fd537adeb53f98dec92e4a77caac512f5Pierre OssmanMODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); 3246b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanMODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver"); 3247d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_LICENSE("GPL"); 32486743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 3249df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre OssmanMODULE_PARM_DESC(debug_quirks, "Force certain quirks."); 325066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterMODULE_PARM_DESC(debug_quirks2, "Force certain other quirks."); 3251