sdhci.c revision 66fd8ad5100b5003046aa744a4f12fa31bb831f9
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> 30d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 31d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include "sdhci.h" 32d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 33d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DRIVER_NAME "sdhci" 34d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 35d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DBG(f, x...) \ 36c65631781eb0f2e81865017c1484e9aef76e1b61Russell King pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x) 37d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 38f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#if defined(CONFIG_LEDS_CLASS) || (defined(CONFIG_LEDS_CLASS_MODULE) && \ 39f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman defined(CONFIG_MMC_SDHCI_MODULE)) 40f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#define SDHCI_USE_LEDS_CLASS 41f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#endif 42f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman 43b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath#define MAX_TUNING_LOOP 40 44b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 45df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanstatic unsigned int debug_quirks = 0; 4666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic unsigned int debug_quirks2; 476743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 48d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *); 49d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 50d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *, struct mmc_command *); 51d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *); 52cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic int sdhci_execute_tuning(struct mmc_host *mmc); 53cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data); 54d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 5566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 5666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host); 5766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host); 5866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#else 5966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_get(struct sdhci_host *host) 6066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 6166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 6266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 6366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_put(struct sdhci_host *host) 6466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 6566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 6666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 6766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 6866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 69d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_dumpregs(struct sdhci_host *host) 70d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 71412ab659b2bdad6afac8f84daf2a8a393145dcaePhilip Rakity printk(KERN_DEBUG DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n", 72412ab659b2bdad6afac8f84daf2a8a393145dcaePhilip Rakity mmc_hostname(host->mmc)); 73d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 74d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", 754e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_DMA_ADDRESS), 764e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_HOST_VERSION)); 77d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", 784e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_SIZE), 794e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_COUNT)); 80d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", 814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_ARGUMENT), 824e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_TRANSFER_MODE)); 83d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", 844e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_PRESENT_STATE), 854e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_HOST_CONTROL)); 86d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", 874e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_POWER_CONTROL), 884e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL)); 89d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", 904e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_WAKE_UP_CONTROL), 914e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_CLOCK_CONTROL)); 92d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", 934e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_TIMEOUT_CONTROL), 944e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_STATUS)); 95d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", 964e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_ENABLE), 974e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_SIGNAL_ENABLE)); 98d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", 994e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_ACMD12_ERR), 1004e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_SLOT_INT_STATUS)); 101e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x | Caps_1: 0x%08x\n", 1024e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_CAPABILITIES), 103e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readl(host, SDHCI_CAPABILITIES_1)); 104e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity printk(KERN_DEBUG DRIVER_NAME ": Cmd: 0x%08x | Max curr: 0x%08x\n", 105e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readw(host, SDHCI_COMMAND), 1064e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_MAX_CURRENT)); 107f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath printk(KERN_DEBUG DRIVER_NAME ": Host ctl2: 0x%08x\n", 108f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_readw(host, SDHCI_HOST_CONTROL2)); 109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 110be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks if (host->flags & SDHCI_USE_ADMA) 111be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks printk(KERN_DEBUG DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n", 112be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ERROR), 113be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ADDRESS)); 114be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks 115d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n"); 116d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 117d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Low level functions * 121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1247260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set) 1257260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1267260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov u32 ier; 1277260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1287260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier = sdhci_readl(host, SDHCI_INT_ENABLE); 1297260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier &= ~clear; 1307260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier |= set; 1317260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_INT_ENABLE); 1327260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); 1337260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1347260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1357260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_unmask_irqs(struct sdhci_host *host, u32 irqs) 1367260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1377260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, 0, irqs); 1387260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1397260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1407260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_mask_irqs(struct sdhci_host *host, u32 irqs) 1417260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1427260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, irqs, 0); 1437260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1447260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1457260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_set_card_detection(struct sdhci_host *host, bool enable) 1467260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 147d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo u32 present, irqs; 1487260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 14968d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 15068d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov return; 15168d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 15266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->quirks2 & SDHCI_QUIRK2_OWN_CARD_DETECTION) 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) { 203acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_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); 217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2192f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); 2202f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2212f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_init(struct sdhci_host *host, int soft) 222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2232f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) 2242f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA); 2252f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre else 2262f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_ALL); 227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2287260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, 2297260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | 2303192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | 2313192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | 2326aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE); 2332f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2342f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) { 2352f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre /* force clock reconfiguration */ 2362f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre host->clock = 0; 2372f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_set_ios(host->mmc, &host->mmc->ios); 2382f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre } 2397260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2417260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_reinit(struct sdhci_host *host) 2427260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 2432f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 2447260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_activate_led(struct sdhci_host *host) 248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 250d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2514e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 252d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_LED; 2534e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 255d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_deactivate_led(struct sdhci_host *host) 257d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 258d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2604e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_LED; 2624e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 263d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 264d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 265f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 2662f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanstatic void sdhci_led_control(struct led_classdev *led, 2672f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman enum led_brightness brightness) 2682f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman{ 2692f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman struct sdhci_host *host = container_of(led, struct sdhci_host, led); 2702f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman unsigned long flags; 2712f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2722f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2732f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 27466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) 27566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter goto out; 27666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2772f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman if (brightness == LED_OFF) 2782f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_deactivate_led(host); 2792f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman else 2802f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_activate_led(host); 28166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterout: 2822f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2832f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman} 2842f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 2852f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 288d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Core functions * 289d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 290d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 291d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 292a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_read_block_pio(struct sdhci_host *host) 293d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2947659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 2957659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 2967244b85bd17313d7d300ee93ec7bfbca1f4ccf3dSteven Noonan u32 uninitialized_var(scratch); 2977659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 298d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 299a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO reading\n"); 300d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 301a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3027659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 303d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3047659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 305d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 306a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3077659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3087659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3107659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3127659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3137659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 31414d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 3157659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3177659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3187659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (chunk == 0) { 3194e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov scratch = sdhci_readl(host, SDHCI_BUFFER); 3207659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 4; 321a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3227659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3237659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman *buf = scratch & 0xFF; 3247659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3257659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3267659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch >>= 8; 3277659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk--; 3287659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 330a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3317659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3327659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3337659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3347659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 335a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 336d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 337a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_write_block_pio(struct sdhci_host *host) 338a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 3397659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 3407659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 3417659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u32 scratch; 3427659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 343d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 344a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO writing\n"); 345a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 346a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3477659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3487659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 349d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3507659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 351d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 352a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3537659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3547659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 355a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3567659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 3577659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3587659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3597659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 3607659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3617659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3637659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3647659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch |= (u32)*buf << (chunk * 8); 3657659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3667659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3677659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk++; 3687659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 3697659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3707659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if ((chunk == 4) || ((len == 0) && (blksize == 0))) { 3714e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, scratch, SDHCI_BUFFER); 3727659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3737659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 374d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 375d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 376d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 3777659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3787659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3797659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3807659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 381a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 382a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 383a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_transfer_pio(struct sdhci_host *host) 384a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 385a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 mask; 386a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 387a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(!host->data); 388a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3897659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 390a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 391a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 392a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 393a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_DATA_AVAILABLE; 394a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 395a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_SPACE_AVAILABLE; 396a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3974a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman /* 3984a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * Some controllers (JMicron JMB38x) mess up the buffer bits 3994a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * for transfers < 4 bytes. As long as it is just one block, 4004a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * we can ignore the bits. 4014a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman */ 4024a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_SMALL_PIO) && 4034a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman (host->data->blocks == 1)) 4044a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman mask = ~0; 4054a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman 4064e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 4073e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY) 4083e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov udelay(100); 4093e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov 410a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 411a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_read_block_pio(host); 412a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 413a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_write_block_pio(host); 414d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4157659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks--; 4167659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 417a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman break; 418a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 419d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 420a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO transfer complete.\n"); 421d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 422d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags) 4242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_save(*flags); 4262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; 4272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) 4302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kunmap_atomic(buffer, KM_BIO_SRC_IRQ); 4322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_restore(*flags); 4332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 435118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooksstatic void sdhci_set_adma_desc(u8 *desc, u32 addr, int len, unsigned cmd) 436118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks{ 4379e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le32 *dataddr = (__le32 __force *)(desc + 4); 4389e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le16 *cmdlen = (__le16 __force *)desc; 439118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4409e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks /* SDHCI specification says ADMA descriptors should be 4 byte 4419e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks * aligned, so using 16 or 32bit operations should be safe. */ 442118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4439e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[0] = cpu_to_le16(cmd); 4449e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[1] = cpu_to_le16(len); 4459e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks 4469e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks dataddr[0] = cpu_to_le32(addr); 447118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks} 448118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4498f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanstatic int sdhci_adma_table_pre(struct sdhci_host *host, 4502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 4512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 4532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *desc; 4552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 4562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t addr; 4572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t align_addr; 4582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int len, offset; 4592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 4612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i; 4622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 4632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 4642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The spec does not specify endianness of descriptor table. 4672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We currently guess that it is LE. 4682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 4712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 4722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 4732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 4742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The ADMA descriptor table is mapped further down as we 4772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * need to fill it with data first. 4782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr = dma_map_single(mmc_dev(host->mmc), 4812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer, 128 * 4, direction); 4828d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(mmc_dev(host->mmc), host->align_addr)) 4838f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto fail; 4842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->align_addr & 0x3); 4852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->sg_count = dma_map_sg(mmc_dev(host->mmc), 4872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg, data->sg_len, direction); 4888f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->sg_count == 0) 4898f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_align; 4902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc = host->adma_desc; 4922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 4932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr = host->align_addr; 4952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 4972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr = sg_dma_address(sg); 4982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len = sg_dma_len(sg); 4992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The SDHCI specification states that ADMA 5022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * addresses must be 32-bit aligned. If they 5032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * aren't, then we use a bounce buffer for 5042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * the (up to three) bytes that screw up the 5052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment. 5062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman offset = (4 - (addr & 0x3)) & 0x3; 5082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (offset) { 5092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 5116cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 5122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(align, buffer, offset); 5132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 5142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 516118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 517118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, align_addr, offset, 0x21); 5182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(offset > 65536); 5202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 5222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr += 4; 5232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr += offset; 5272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len -= offset; 5282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(len > 65536); 5312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 532118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 533118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, addr, len, 0x21); 5342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * If this triggers then we have a calculation bug 5382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * somewhere. :/ 5392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman WARN_ON((desc - host->adma_desc) > (128 * 2 + 1) * 4); 5412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 54370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) { 54470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 54570764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Mark the last descriptor as the terminating descriptor 54670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 54770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (desc != host->adma_desc) { 54870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc -= 8; 54970764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc[0] |= 0x2; /* end */ 55070764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 55170764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } else { 55270764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 55370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Add a terminating entry. 55470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 5552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 55670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* nop, end, valid */ 55770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham sdhci_set_adma_desc(desc, 0, 0, 0x3); 55870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 5592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Resync align buffer as we might have changed it. 5622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_single_for_device(mmc_dev(host->mmc), 5652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr, 128 * 4, direction); 5662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_addr = dma_map_single(mmc_dev(host->mmc), 5692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc, (128 * 2 + 1) * 4, DMA_TO_DEVICE); 570980167b7fb20fb181766218b4771fc7420a7bbb4Pierre Ossman if (dma_mapping_error(mmc_dev(host->mmc), host->adma_addr)) 5718f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_entries; 5722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->adma_addr & 0x3); 5738f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 5748f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return 0; 5758f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 5768f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_entries: 5778f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 5788f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg_len, direction); 5798f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_align: 5808f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 5818f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 128 * 4, direction); 5828f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanfail: 5838f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return -EINVAL; 5842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 5852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_adma_table_post(struct sdhci_host *host, 5872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 5882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 5892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 5902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 5922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i, size; 5932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 5942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 5952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 5962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 5982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 5992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 6002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 6012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->adma_addr, 6032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (128 * 2 + 1) * 4, DMA_TO_DEVICE); 6042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 6062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 128 * 4, direction); 6072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) { 6092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg, 6102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 6132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 6152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg_dma_address(sg) & 0x3) { 6162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman size = 4 - (sg_dma_address(sg) & 0x3); 6172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 6196cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 6202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(buffer, align, size); 6212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 6222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 6242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 6292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 6312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 632a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentinstatic u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) 633d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 6341c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman u8 count; 635a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 6361c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman unsigned target_timeout, current_timeout; 637d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 638ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* 639ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * If the host controller provides us with an incorrect timeout 640ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * value, just skip the check and use 0xE. The hardware may take 641ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * longer to time out, but that's much better than having a too-short 642ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * timeout value. 643ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman */ 64411a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) 645ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return 0xE; 646e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 647a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* Unspecified timeout, assume max */ 648a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data && !cmd->cmd_timeout_ms) 649a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin return 0xE; 650d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 651a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* timeout in us */ 652a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 653a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin target_timeout = cmd->cmd_timeout_ms * 1000; 65478a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko else { 65578a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout = data->timeout_ns / 1000; 65678a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko if (host->clock) 65778a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout += data->timeout_clks / host->clock; 65878a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko } 65981b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov 6601c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* 6611c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * Figure out needed cycles. 6621c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * We do this in steps in order to fit inside a 32 bit int. 6631c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * The first step is the minimum timeout, which will have a 6641c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * minimum resolution of 6 bits: 6651c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) 2^13*1000 > 2^22, 6661c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (2) host->timeout_clk < 2^16 6671c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * => 6681c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) / (2) > 2^6 6691c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman */ 6701c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0; 6711c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout = (1 << 13) * 1000 / host->timeout_clk; 6721c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman while (current_timeout < target_timeout) { 6731c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count++; 6741c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout <<= 1; 6751c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) 6761c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman break; 6771c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 6781c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 6791c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) { 680a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin printk(KERN_WARNING "%s: Too large timeout requested for CMD%d!\n", 681a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin mmc_hostname(host->mmc), cmd->opcode); 6821c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0xE; 6831c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 6841c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 685ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return count; 686ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman} 687ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 6886aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsovstatic void sdhci_set_transfer_irqs(struct sdhci_host *host) 6896aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov{ 6906aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL; 6916aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR; 6926aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 6936aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov if (host->flags & SDHCI_REQ_USE_DMA) 6946aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, pio_irqs, dma_irqs); 6956aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov else 6966aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, dma_irqs, pio_irqs); 6976aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov} 6986aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 699a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentinstatic void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) 700ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman{ 701ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman u8 count; 7022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 ctrl; 703a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 7048f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman int ret; 705ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 706ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman WARN_ON(host->data); 707ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 708a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (data || (cmd->flags & MMC_RSP_BUSY)) { 709a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin count = sdhci_calc_timeout(host, cmd); 710a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); 711a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin } 712a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin 713a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 714ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return; 715ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 716ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* Sanity checks */ 717ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz * data->blocks > 524288); 718ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz > host->mmc->max_blk_size); 719ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blocks > 65535); 720ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 721ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data = data; 722ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data_early = 0; 723f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = 0; 724ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 725a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) 726c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman host->flags |= SDHCI_REQ_USE_DMA; 727c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 7282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * FIXME: This doesn't account for merging when mapping the 7302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * scatterlist. 7312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) 7422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 7462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 7472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->length & 0x3) { 7482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 7492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "transfer size (%d)\n", 7502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sg->length); 7512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 7532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 756c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 757c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 758c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman /* 759c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * The assumption here being that alignment is the same after 760c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * translation to device address space. 761c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman */ 7622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * As we use 3 byte chunks to work around 7702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment problems, we need to check this 7712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * quirk. 7722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) 7772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 7812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 7822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->offset & 0x3) { 7832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 7842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "bad alignment\n"); 7852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 7872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7928f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7938f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7948f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman ret = sdhci_adma_table_pre(host, data); 7958f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (ret) { 7968f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 7978f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 7988f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 7998f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8008f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 801ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8028f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 8034e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, host->adma_addr, 8044e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_ADMA_ADDRESS); 8058f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8068f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 807c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler int sg_cnt; 8088f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 809c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler sg_cnt = dma_map_sg(mmc_dev(host->mmc), 8108f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg, data->sg_len, 8118f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman (data->flags & MMC_DATA_READ) ? 8128f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_FROM_DEVICE : 8138f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_TO_DEVICE); 814c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler if (sg_cnt == 0) { 8158f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 8168f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 8178f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 8188f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8198f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 820ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8218f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 822719a61b452ff74cf81a96e4212748d9d63bcc924Pierre Ossman WARN_ON(sg_cnt != 1); 8234e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, sg_dma_address(data->sg), 8244e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_DMA_ADDRESS); 8258f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8268f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8278f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8288f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 8292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 8302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Always adjust the DMA selection as some controllers 8312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (e.g. JMicron) can't do PIO properly when the selection 8322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * is ADMA. 8332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 8342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->version >= SDHCI_SPEC_200) { 8354e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 8362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl &= ~SDHCI_CTRL_DMA_MASK; 8372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->flags & SDHCI_REQ_USE_DMA) && 8382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) 8392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_ADMA32; 8402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 8412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_SDMA; 8424e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 843c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 844c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 8458f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (!(host->flags & SDHCI_REQ_USE_DMA)) { 846da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior int flags; 847da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior 848da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags = SG_MITER_ATOMIC; 849da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior if (host->data->flags & MMC_DATA_READ) 850da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_TO_SG; 851da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior else 852da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_FROM_SG; 853da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags); 8547659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks = data->blocks; 855d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 856c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8576aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_set_transfer_irqs(host); 8586aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 859f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* Set the DMA boundary value and block size */ 860f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, 861f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni data->blksz), SDHCI_BLOCK_SIZE); 8624e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); 863c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman} 864c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 865c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossmanstatic void sdhci_set_transfer_mode(struct sdhci_host *host, 866e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_command *cmd) 867c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman{ 868c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman u16 mode; 869e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_data *data = cmd->data; 870c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 871c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data == NULL) 872c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman return; 873c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 874e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman WARN_ON(!host->data); 875e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 876c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode = SDHCI_TRNS_BLK_CNT_EN; 877e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (mmc_op_multi(cmd->opcode) || data->blocks > 1) { 878e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_MULTI; 879e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 880e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * If we are sending CMD23, CMD12 never gets sent 881e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * on successful completion (so no Auto-CMD12). 882e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 883e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) 884e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD12; 8858edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) { 8868edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD23; 8878edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin sdhci_writel(host, host->mrq->sbc->arg, SDHCI_ARGUMENT2); 8888edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 889c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 8908edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 891c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->flags & MMC_DATA_READ) 892c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_READ; 893c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) 894c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_DMA; 895c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8964e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, mode, SDHCI_TRANSFER_MODE); 897d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 898d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 899d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *host) 900d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 901d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_data *data; 902d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 903d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!host->data); 904d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 905d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data = host->data; 906d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 907d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 908c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 9092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 9102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_adma_table_post(host, data); 9112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else { 9122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 9132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, (data->flags & MMC_DATA_READ) ? 9142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DMA_FROM_DEVICE : DMA_TO_DEVICE); 9152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 916d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 917d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 918d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 919c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * The specification states that the block count register must 920c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * be updated, but it does not specify at what point in the 921c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * data flow. That makes the register entirely useless to read 922c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * back so we have to assume that nothing made it to the card 923c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * in the event of an error. 924d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 925c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman if (data->error) 926c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = 0; 927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 928c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = data->blksz * data->blocks; 929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 930e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 931e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Need to send CMD12 if - 932e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * a) open-ended multiblock transfer (no CMD23) 933e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * b) error in multiblock transfer 934e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 935e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (data->stop && 936e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin (data->error || 937e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin !host->mrq->sbc)) { 938e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 939d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 940d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 941d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 942d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 94317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (data->error) { 944d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 945d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 946d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 947d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 948d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, data->stop); 949d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 950d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 951d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 952d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 953d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 954d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 955d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int flags; 956fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman u32 mask; 9577cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 958d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 959d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->cmd); 960d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 961d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 9627cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 963fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 964fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask = SDHCI_CMD_INHIBIT; 965fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) 966fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask |= SDHCI_DATA_INHIBIT; 967fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 968fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman /* We shouldn't wait for data inihibit for stop commands, even 969fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman though they might use busy signaling */ 970fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if (host->mrq->data && (cmd == host->mrq->data->stop)) 971fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask &= ~SDHCI_DATA_INHIBIT; 972fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 9734e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 9747cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 975d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Controller never released " 976acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "inhibit bit(s).\n", mmc_hostname(host->mmc)); 977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 97817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EIO; 979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 980d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 981d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 9827cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 9837cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 9847cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 985d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 986d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mod_timer(&host->timer, jiffies + 10 * HZ); 987d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 988d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = cmd; 989d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 990a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin sdhci_prepare_data(host, cmd); 991d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); 993d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 994e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_set_transfer_mode(host, cmd); 995c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 996d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { 997acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unsupported response type!\n", 998d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 99917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EINVAL; 1000d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1001d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1002d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1003d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(cmd->flags & MMC_RSP_PRESENT)) 1005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_NONE; 1006d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_136) 1007d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_LONG; 1008d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_BUSY) 1009d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT_BUSY; 1010d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1011d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT; 1012d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1013d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_CRC) 1014d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_CRC; 1015d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_OPCODE) 1016d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_INDEX; 1017b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1018b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 is special in that the Data Present Select should be set */ 1019b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (cmd->data || (cmd->opcode == MMC_SEND_TUNING_BLOCK)) 1020d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_DATA; 1021d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10224e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); 1023d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1024d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1025d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *host) 1026d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1027d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 1028d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(host->cmd == NULL); 1030d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1031d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_PRESENT) { 1032d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_136) { 1033d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* CRC is stripped so we need to do some shifting. */ 1034d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < 4;i++) { 10354e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[i] = sdhci_readl(host, 1036d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4) << 8; 1037d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (i != 3) 1038d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] |= 10394e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, 1040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4-1); 1041d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 10434e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE); 1044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1045d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 104717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = 0; 1048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1049e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Finished CMD23, now send actual command. */ 1050e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->cmd == host->mrq->sbc) { 1051e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1052e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, host->mrq->cmd); 1053e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } else { 1054e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 1055e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Processed actual command. */ 1056e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->data && host->data_early) 1057e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_finish_data(host); 1058d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1059e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->cmd->data) 1060e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin tasklet_schedule(&host->finish_tasklet); 1061e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1062e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1063e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } 1064d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1065d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1066d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) 1067d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1068c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath int div = 0; /* Initialized for compiler warning */ 1069c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath u16 clk = 0; 10707cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 1071d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1072d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == host->clock) 1073d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1074d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10758114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->ops->set_clock) { 10768114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov host->ops->set_clock(host, clock); 10778114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) 10788114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov return; 10798114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov } 10808114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov 10814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); 1082d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1083d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == 0) 1084d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 1085d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 108685105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version >= SDHCI_SPEC_300) { 1087c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1088c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Check if the Host Controller supports Programmable Clock 1089c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Mode. 1090c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1091c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 1092c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath u16 ctrl; 1093c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 1094c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1095c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * We need to figure out whether the Host Driver needs 1096c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * to select Programmable Clock Mode, or the value can 1097c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * be set automatically by the Host Controller based on 1098c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * the Preset Value registers. 1099c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1100c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1101c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (!(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 1102c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath for (div = 1; div <= 1024; div++) { 1103c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (((host->max_clk * host->clk_mul) / 1104c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div) <= clock) 1105c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath break; 1106c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 1107c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1108c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Set Programmable Clock Mode in the Clock 1109c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Control register. 1110c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1111c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath clk = SDHCI_PROG_CLOCK_MODE; 1112c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div--; 1113c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 1114c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else { 1115c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* Version 3.00 divisors must be a multiple of 2. */ 1116c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->max_clk <= clock) 1117c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div = 1; 1118c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else { 1119c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; 1120c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div += 2) { 1121c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if ((host->max_clk / div) <= clock) 1122c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath break; 1123c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 112485105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1125c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 112685105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 112785105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } else { 112885105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao /* Version 2.00 divisors must be a power of 2. */ 11290397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) { 113085105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if ((host->max_clk / div) <= clock) 113185105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao break; 113285105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1133c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 1134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1136c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; 113785105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) 113885105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao << SDHCI_DIVIDER_HI_SHIFT; 1139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_INT_EN; 11404e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 114227f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball /* Wait max 20 ms */ 114327f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball timeout = 20; 11444e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) 11457cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman & SDHCI_CLOCK_INT_STABLE)) { 11467cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 1147acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Internal clock never " 1148acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "stabilised.\n", mmc_hostname(host->mmc)); 1149d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1150d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1151d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 11527cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 11537cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 11547cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1156d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_CARD_EN; 11574e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1158d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1159d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 1160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = clock; 1161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1163146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossmanstatic void sdhci_set_power(struct sdhci_host *host, unsigned short power) 1164146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman{ 11658364248a829d50495a796e7561aaf9a6976f846cGiuseppe Cavallaro u8 pwr = 0; 1166146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 11678364248a829d50495a796e7561aaf9a6976f846cGiuseppe Cavallaro if (power != (unsigned short)-1) { 1168ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman switch (1 << power) { 1169ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_165_195: 1170ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_180; 1171ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1172ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_29_30: 1173ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_30_31: 1174ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_300; 1175ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1176ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_32_33: 1177ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_33_34: 1178ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_330; 1179ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1180ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman default: 1181ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman BUG(); 1182ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1183ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1184ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1185ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (host->pwr == pwr) 1186146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman return; 1187146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1188ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman host->pwr = pwr; 1189ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1190ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (pwr == 0) { 11914e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1192ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman return; 11939e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt } 11949e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 11959e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt /* 11969e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * Spec says that we should clear the power reg before setting 11979e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * a new value. Some controllers don't seem to like this though. 11989e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt */ 1199b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) 12004e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1201146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1202e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon /* 1203c71f65129a1fb67bc6b9b8d03b493675b5c9302bAndres Salomon * At least the Marvell CaFe chip gets confused if we set the voltage 1204e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon * and set turn on power at the same time, so set the voltage first. 1205e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon */ 120611a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) 1207ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1208e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon 1209ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr |= SDHCI_POWER_ON; 1210146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1211ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1212557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte 1213557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte /* 1214557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * Some controllers need an extra 10ms delay of 10ms before they 1215557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * can apply clock after applying power 1216557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte */ 121711a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER) 1218557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte mdelay(10); 1219146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman} 1220146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * MMC callbacks * 1224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) 1228d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 123068d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov bool present; 1231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1233d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 123566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 123666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1237d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1238d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->mrq != NULL); 1240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1241f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 1242d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_activate_led(host); 12432f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 1244e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1245e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 1246e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Ensure we don't send the STOP for non-SET_BLOCK_COUNTED 1247e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * requests if Auto-CMD12 is enabled. 1248e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 1249e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) { 1250c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang if (mrq->stop) { 1251c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->data->stop = NULL; 1252c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->stop = NULL; 1253c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1254c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1255d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = mrq; 1257d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 125868d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov /* If polling, assume that the card is always present. */ 125968d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 126068d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov present = true; 126168d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov else 126268d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 126368d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov SDHCI_CARD_PRESENT; 126468d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 126568d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (!present || host->flags & SDHCI_DEVICE_DEAD) { 126617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 1267d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1268cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } else { 1269cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath u32 present_state; 1270cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1271cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 1272cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1273cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * Check if the re-tuning timer has already expired and there 1274cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * is no on-going data transfer. If so, we need to execute 1275cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * tuning procedure before sending command. 1276cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1277cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if ((host->flags & SDHCI_NEEDS_RETUNING) && 1278cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) { 1279cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_unlock_irqrestore(&host->lock, flags); 1280cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath sdhci_execute_tuning(mmc); 1281cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_lock_irqsave(&host->lock, flags); 1282cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1283cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Restore original mmc_request structure */ 1284cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->mrq = mrq; 1285cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1286cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 12878edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23)) 1288e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->sbc); 1289e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin else 1290e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->cmd); 1291cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1292d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12935f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1294d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1295d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1296d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 129766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) 1298d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1299d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1300d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 1301d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1302d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1303d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 13041e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 13051e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman goto out; 13061e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1307d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1308d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Reset the chip on each power off. 1309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Should clear out any weird states. 1310d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) { 13124e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 13137260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_reinit(host); 1314d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1315d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_set_clock(host, ios->clock); 1317d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) 1319146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, -1); 1320d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1321146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, ios->vdd); 1322d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1323643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity if (host->ops->platform_send_init_74_clocks) 1324643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity host->ops->platform_send_init_74_clocks(host, ios->power_mode); 1325643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity 132615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity /* 132715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * If your platform has 8-bit width support but is not a v3 controller, 132815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * or if it requires special setup code, you should implement that in 132915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * platform_8bit_width(). 133015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity */ 133115ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->ops->platform_8bit_width) 133215ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity host->ops->platform_8bit_width(host, ios->bus_width); 133315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity else { 133415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 133515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (ios->bus_width == MMC_BUS_WIDTH_8) { 133615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_4BITBUS; 133715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->version >= SDHCI_SPEC_300) 133815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl |= SDHCI_CTRL_8BITBUS; 133915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } else { 134015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->version >= SDHCI_SPEC_300) 134115ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_8BITBUS; 134215ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (ios->bus_width == MMC_BUS_WIDTH_4) 134315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl |= SDHCI_CTRL_4BITBUS; 134415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity else 134515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_4BITBUS; 134615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } 134715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 134815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } 1349ae6d6c92212e94b12ab9365c23fb73acc2c3c2e7Kyungmin Park 135015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 1351cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 13523ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity if ((ios->timing == MMC_TIMING_SD_HS || 13533ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity ios->timing == MMC_TIMING_MMC_HS) 13543ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity && !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) 1355cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl |= SDHCI_CTRL_HISPD; 1356cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman else 1357cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl &= ~SDHCI_CTRL_HISPD; 1358cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1359d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (host->version >= SDHCI_SPEC_300) { 136049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath u16 clk, ctrl_2; 136149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath unsigned int clock; 136249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 136349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* In case of UHS-I modes, set High Speed Enable */ 136449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if ((ios->timing == MMC_TIMING_UHS_SDR50) || 136549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_SDR104) || 136649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_DDR50) || 136749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_SDR25) || 136849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_SDR12)) 136949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath ctrl |= SDHCI_CTRL_HISPD; 1370d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1371d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1372d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(ctrl_2 & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 1373758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1374d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1375d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * We only need to set Driver Strength if the 1376d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * preset value enable is not set. 1377d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1378d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 &= ~SDHCI_CTRL_DRV_TYPE_MASK; 1379d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (ios->drv_type == MMC_SET_DRIVER_TYPE_A) 1380d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_A; 1381d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C) 1382d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_C; 1383d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1384d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 1385758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else { 1386758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* 1387758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * According to SDHC Spec v3.00, if the Preset Value 1388758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Enable in the Host Control 2 register is set, we 1389758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * need to reset SD Clock Enable before changing High 1390758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Speed Enable to avoid generating clock gliches. 1391758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath */ 1392758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1393758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Reset SD Clock Enable */ 1394758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 1395758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 1396758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1397758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1398758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1399758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1400758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Re-enable SD Clock */ 1401758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clock = host->clock; 1402758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath host->clock = 0; 1403758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_set_clock(host, clock); 1404d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 140549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 140649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 140749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Reset SD Clock Enable */ 140849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 140949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 141049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 141149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 14126322cdd0eb22e016aeced886c2046d115139c962Philip Rakity if (host->ops->set_uhs_signaling) 14136322cdd0eb22e016aeced886c2046d115139c962Philip Rakity host->ops->set_uhs_signaling(host, ios->timing); 14146322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else { 14156322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 14166322cdd0eb22e016aeced886c2046d115139c962Philip Rakity /* Select Bus Speed Mode for host */ 14176322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; 14186322cdd0eb22e016aeced886c2046d115139c962Philip Rakity if (ios->timing == MMC_TIMING_UHS_SDR12) 14196322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR12; 14206322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR25) 14216322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR25; 14226322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR50) 14236322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR50; 14246322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR104) 14256322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR104; 14266322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_DDR50) 14276322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_DDR50; 14286322cdd0eb22e016aeced886c2046d115139c962Philip Rakity sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 14296322cdd0eb22e016aeced886c2046d115139c962Philip Rakity } 143049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 143149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Re-enable SD Clock */ 143249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clock = host->clock; 143349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath host->clock = 0; 143449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath sdhci_set_clock(host, clock); 1435758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else 1436758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1437d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1438b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo /* 1439b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * Some (ENE) controllers go apeshit on some ios operation, 1440b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * signalling timeout and CRC errors even on CMD0. Resetting 1441b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * it on each ios seems to solve the problem. 1442b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo */ 1443b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) 1444b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 1445b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 14461e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanout: 14475f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1448d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1449d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1450d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 145166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 145266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 145366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 145466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 145566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 145666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, ios); 145766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 145866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 145966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 146066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_check_ro(struct sdhci_host *host) 1461d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1462d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 14632dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang int is_readonly; 1464d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1465d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1466d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14671e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 14682dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = 0; 14692dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang else if (host->ops->get_ro) 14702dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = host->ops->get_ro(host); 14711e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman else 14722dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE) 14732dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang & SDHCI_WRITE_PROTECT); 1474d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1475d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1476d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14772dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang /* This quirk needs to be replaced by a callback-function later */ 14782dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang return host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT ? 14792dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang !is_readonly : is_readonly; 1480d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1481d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 148282b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai#define SAMPLE_COUNT 5 148382b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 148466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_do_get_ro(struct sdhci_host *host) 148582b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai{ 148682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai int i, ro_count; 148782b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 148882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT)) 148966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return sdhci_check_ro(host); 149082b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 149182b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai ro_count = 0; 149282b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai for (i = 0; i < SAMPLE_COUNT; i++) { 149366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (sdhci_check_ro(host)) { 149482b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (++ro_count > SAMPLE_COUNT / 2) 149582b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 1; 149682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 149782b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai msleep(30); 149882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 149982b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 0; 150082b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai} 150182b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 150220758b66dce76af0527363186f44b464d83e5666Adrian Hunterstatic void sdhci_hw_reset(struct mmc_host *mmc) 150320758b66dce76af0527363186f44b464d83e5666Adrian Hunter{ 150420758b66dce76af0527363186f44b464d83e5666Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 150520758b66dce76af0527363186f44b464d83e5666Adrian Hunter 150620758b66dce76af0527363186f44b464d83e5666Adrian Hunter if (host->ops && host->ops->hw_reset) 150720758b66dce76af0527363186f44b464d83e5666Adrian Hunter host->ops->hw_reset(host); 150820758b66dce76af0527363186f44b464d83e5666Adrian Hunter} 150920758b66dce76af0527363186f44b464d83e5666Adrian Hunter 151066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_get_ro(struct mmc_host *mmc) 1511f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman{ 151266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 151366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret; 1514f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 151566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 151666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter ret = sdhci_do_get_ro(host); 151766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 151866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 151966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 1520f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 152166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable) 152266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 15231e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 15241e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman goto out; 15251e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1526f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (enable) 152766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_SDIO_IRQ_ENABLED; 152866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter else 152966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_SDIO_IRQ_ENABLED; 153066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 153166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* SDIO IRQ will be enabled as appropriate in runtime resume */ 153266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) 153366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter goto out; 153466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 153566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (enable) 15367260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT); 15377260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov else 15387260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_mask_irqs(host, SDHCI_INT_CARD_INT); 15391e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanout: 1540f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmiowb(); 154166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 154266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 154366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) 154466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 154566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 154666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 1547f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 154866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 154966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, enable); 1550f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1551f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman} 1552f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 155366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, 155466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct mmc_ios *ios) 1555f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath{ 1556f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u8 pwr; 1557f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u16 clk, ctrl; 1558f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u32 present_state; 1559f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1560f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 1561f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * Signal Voltage Switching is only applicable for Host Controllers 1562f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * v3.00 and above. 1563f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 1564f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->version < SDHCI_SPEC_300) 1565f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 1566f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1567f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 1568f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * We first check whether the request is to set signalling voltage 1569f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * to 3.3V. If so, we change the voltage to 3.3V and return quickly. 1570f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 1571f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1572f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1573f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ 1574f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl &= ~SDHCI_CTRL_VDD_180; 1575f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1576f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1577f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Wait for 5ms */ 1578f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath usleep_range(5000, 5500); 1579f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1580f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 3.3V regulator output should be stable within 5 ms */ 1581f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1582f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (!(ctrl & SDHCI_CTRL_VDD_180)) 1583f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 1584f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath else { 1585f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath printk(KERN_INFO DRIVER_NAME ": Switching to 3.3V " 1586f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath "signalling voltage failed\n"); 1587f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return -EIO; 1588f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 1589f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } else if (!(ctrl & SDHCI_CTRL_VDD_180) && 1590f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180)) { 1591f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Stop SDCLK */ 1592f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 1593f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 1594f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1595f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1596f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Check whether DAT[3:0] is 0000 */ 1597f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 1598f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (!((present_state & SDHCI_DATA_LVL_MASK) >> 1599f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_DATA_LVL_SHIFT)) { 1600f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 1601f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * Enable 1.8V Signal Enable in the Host Control2 1602f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * register 1603f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 1604f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl |= SDHCI_CTRL_VDD_180; 1605f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1606f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1607f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Wait for 5ms */ 1608f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath usleep_range(5000, 5500); 1609f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1610f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1611f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (ctrl & SDHCI_CTRL_VDD_180) { 1612f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Provide SDCLK again and wait for 1ms*/ 1613f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 1614f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath clk |= SDHCI_CLOCK_CARD_EN; 1615f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1616f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath usleep_range(1000, 1500); 1617f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1618f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 1619f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If DAT[3:0] level is 1111b, then the card 1620f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * was successfully switched to 1.8V signaling. 1621f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 1622f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath present_state = sdhci_readl(host, 1623f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_PRESENT_STATE); 1624f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if ((present_state & SDHCI_DATA_LVL_MASK) == 1625f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_DATA_LVL_MASK) 1626f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 1627f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 1628f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 1629f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1630f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 1631f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If we are here, that means the switch to 1.8V signaling 1632f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * failed. We power cycle the card, and retry initialization 1633f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * sequence by setting S18R to 0. 1634f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 1635f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath pwr = sdhci_readb(host, SDHCI_POWER_CONTROL); 1636f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath pwr &= ~SDHCI_POWER_ON; 1637f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1638f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1639f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Wait for 1ms as per the spec */ 1640f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath usleep_range(1000, 1500); 1641f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath pwr |= SDHCI_POWER_ON; 1642f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1643f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 1644f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath printk(KERN_INFO DRIVER_NAME ": Switching to 1.8V signalling " 1645f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath "voltage failed, retrying with S18R set to 0\n"); 1646f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return -EAGAIN; 1647f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } else 1648f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* No signal voltage switch required */ 1649f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 1650f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath} 1651f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 165266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, 165366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct mmc_ios *ios) 165466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 165566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 165666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int err; 165766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 165866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->version < SDHCI_SPEC_300) 165966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 166066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 166166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter err = sdhci_do_start_signal_voltage_switch(host, ios); 166266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 166366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return err; 166466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 166566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1666b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nathstatic int sdhci_execute_tuning(struct mmc_host *mmc) 1667b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath{ 1668b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath struct sdhci_host *host; 1669b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath u16 ctrl; 1670b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath u32 ier; 1671b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int tuning_loop_counter = MAX_TUNING_LOOP; 1672b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath unsigned long timeout; 1673b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int err = 0; 1674b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1675b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host = mmc_priv(mmc); 1676b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 167766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 1678b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath disable_irq(host->irq); 1679b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_lock(&host->lock); 1680b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1681b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1682b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1683b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1684b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Host Controller needs tuning only in case of SDR104 mode 1685b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * and for SDR50 mode when Use Tuning for SDR50 is set in 1686b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Capabilities register. 1687b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1688b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) || 1689b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) && 1690b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath (host->flags & SDHCI_SDR50_NEEDS_TUNING))) 1691b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl |= SDHCI_CTRL_EXEC_TUNING; 1692b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath else { 1693b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_unlock(&host->lock); 1694b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath enable_irq(host->irq); 169566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 1696b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return 0; 1697b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1698b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1699b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1700b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1701b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1702b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * As per the Host Controller spec v3.00, tuning command 1703b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * generates Buffer Read Ready interrupt, so enable that. 1704b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * 1705b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Note: The spec clearly says that when tuning sequence 1706b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * is being performed, the controller does not generate 1707b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * interrupts other than Buffer Read Ready interrupt. But 1708b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to make sure we don't hit a controller bug, we _only_ 1709b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * enable Buffer Read Ready interrupt here. 1710b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1711b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ier = sdhci_readl(host, SDHCI_INT_ENABLE); 1712b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_clear_set_irqs(host, ier, SDHCI_INT_DATA_AVAIL); 1713b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1714b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1715b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Issue CMD19 repeatedly till Execute Tuning is set to 0 or the number 1716b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * of loops reaches 40 times or a timeout of 150ms occurs. 1717b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1718b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath timeout = 150; 1719b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath do { 1720b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath struct mmc_command cmd = {0}; 172166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct mmc_request mrq = {NULL}; 1722b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1723b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!tuning_loop_counter && !timeout) 1724b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath break; 1725b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1726b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.opcode = MMC_SEND_TUNING_BLOCK; 1727b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.arg = 0; 1728b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1729b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.retries = 0; 1730b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.data = NULL; 1731b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.error = 0; 1732b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1733b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath mrq.cmd = &cmd; 1734b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = &mrq; 1735b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1736b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1737b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * In response to CMD19, the card sends 64 bytes of tuning 1738b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * block to the Host Controller. So we set the block size 1739b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to 64 here. 1740b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1741b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), SDHCI_BLOCK_SIZE); 1742b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1743b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1744b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The tuning block is sent by the card to the host controller. 1745b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * So we set the TRNS_READ bit in the Transfer Mode register. 1746b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * This also takes care of setting DMA Enable and Multi Block 1747b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Select in the same register to 0. 1748b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1749b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); 1750b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1751b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_send_command(host, &cmd); 1752b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1753b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->cmd = NULL; 1754b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = NULL; 1755b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1756b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_unlock(&host->lock); 1757b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath enable_irq(host->irq); 1758b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1759b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* Wait for Buffer Read Ready interrupt */ 1760b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wait_event_interruptible_timeout(host->buf_ready_int, 1761b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath (host->tuning_done == 1), 1762b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath msecs_to_jiffies(50)); 1763b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath disable_irq(host->irq); 1764b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_lock(&host->lock); 1765b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1766b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!host->tuning_done) { 1767b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath printk(KERN_INFO DRIVER_NAME ": Timeout waiting for " 1768b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "Buffer Read Ready interrupt during tuning " 1769b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "procedure, falling back to fixed sampling " 1770b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "clock\n"); 1771b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1772b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 1773b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_EXEC_TUNING; 1774b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1775b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1776b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = -EIO; 1777b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 1778b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1779b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1780b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 0; 1781b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1782b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1783b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath tuning_loop_counter--; 1784b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath timeout--; 1785b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath mdelay(1); 1786b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } while (ctrl & SDHCI_CTRL_EXEC_TUNING); 1787b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1788b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1789b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The Host Driver has exhausted the maximum number of loops allowed, 1790b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * so use fixed sampling frequency. 1791b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1792b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!tuning_loop_counter || !timeout) { 1793b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 1794b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1795b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } else { 1796b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) { 1797b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath printk(KERN_INFO DRIVER_NAME ": Tuning procedure" 1798b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath " failed, falling back to fixed sampling" 1799b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath " clock\n"); 1800b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = -EIO; 1801b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1802b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1803b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1804b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nathout: 1805cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1806cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * If this is the very first time we are here, we start the retuning 1807cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * timer. Since only during the first time, SDHCI_NEEDS_RETUNING 1808cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * flag won't be set, we check this condition before actually starting 1809cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * the timer. 1810cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1811cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (!(host->flags & SDHCI_NEEDS_RETUNING) && host->tuning_count && 1812cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath (host->tuning_mode == SDHCI_TUNING_MODE_1)) { 1813cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mod_timer(&host->tuning_timer, jiffies + 1814cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count * HZ); 1815cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Tuning mode 1 limits the maximum data length to 4MB */ 1816cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mmc->max_blk_count = (4 * 1024 * 1024) / mmc->max_blk_size; 1817cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } else { 1818cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 1819cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Reload the new initial value for timer */ 1820cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->tuning_mode == SDHCI_TUNING_MODE_1) 1821cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mod_timer(&host->tuning_timer, jiffies + 1822cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count * HZ); 1823cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1824cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1825cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1826cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case tuning fails, host controllers which support re-tuning can 1827cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * try tuning again at a later time, when the re-tuning timer expires. 1828cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * So for these controllers, we return 0. Since there might be other 1829cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * controllers who do not have this capability, we return error for 1830cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * them. 1831cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1832cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (err && host->tuning_count && 1833cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_mode == SDHCI_TUNING_MODE_1) 1834cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath err = 0; 1835cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1836b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_clear_set_irqs(host, SDHCI_INT_DATA_AVAIL, ier); 1837b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath spin_unlock(&host->lock); 1838b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath enable_irq(host->irq); 183966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 1840b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1841b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return err; 1842b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath} 1843b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 184466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable) 18454d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath{ 18464d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath u16 ctrl; 18474d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath unsigned long flags; 18484d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 18494d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* Host Controller v3.00 defines preset value registers */ 18504d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->version < SDHCI_SPEC_300) 18514d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath return; 18524d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 18534d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath spin_lock_irqsave(&host->lock, flags); 18544d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 18554d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 18564d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 18574d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* 18584d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * We only enable or disable Preset Value if they are not already 18594d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * enabled or disabled respectively. Otherwise, we bail out. 18604d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath */ 18614d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (enable && !(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 18624d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl |= SDHCI_CTRL_PRESET_VAL_ENABLE; 18634d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 186466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_PV_ENABLED; 18654d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath } else if (!enable && (ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 18664d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl &= ~SDHCI_CTRL_PRESET_VAL_ENABLE; 18674d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 186866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_PV_ENABLED; 18694d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath } 18704d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 18714d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath spin_unlock_irqrestore(&host->lock, flags); 18724d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath} 18734d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 187466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable) 187566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 187666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 187766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 187866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 187966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_enable_preset_value(host, enable); 188066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 188166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 188266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1883ab7aefd0b38297e6d2d71f43e8f81f9f4a36cdaeDavid Brownellstatic const struct mmc_host_ops sdhci_ops = { 1884d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .request = sdhci_request, 1885d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .set_ios = sdhci_set_ios, 1886d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .get_ro = sdhci_get_ro, 188720758b66dce76af0527363186f44b464d83e5666Adrian Hunter .hw_reset = sdhci_hw_reset, 1888f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman .enable_sdio_irq = sdhci_enable_sdio_irq, 1889f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, 1890b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath .execute_tuning = sdhci_execute_tuning, 18914d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath .enable_preset_value = sdhci_enable_preset_value, 1892d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 1893d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1894d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1895d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1896d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Tasklets * 1897d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1898d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1899d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1900d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_card(unsigned long param) 1901d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1902d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1903d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1904d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1905d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 1906d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1907d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1908d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 190966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Check host->mrq first in case we are runtime suspended */ 191066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->mrq && 191166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter !(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { 191266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter printk(KERN_ERR "%s: Card removed during transfer!\n", 191366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 191466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter printk(KERN_ERR "%s: Resetting controller.\n", 191566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 1916d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 191766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_reset(host, SDHCI_RESET_CMD); 191866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_reset(host, SDHCI_RESET_DATA); 1919d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 192066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->mrq->cmd->error = -ENOMEDIUM; 192166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter tasklet_schedule(&host->finish_tasklet); 1922d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1923d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1924d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1925d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 192604cf585d2902404ed06861c6dc27897100340dbaPierre Ossman mmc_detect_change(host->mmc, msecs_to_jiffies(200)); 1927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1928d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_finish(unsigned long param) 1930d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1931d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1932d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1933d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_request *mrq; 1934d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1935d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 1936d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 193766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 193866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 19390c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball /* 19400c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * If this tasklet gets rescheduled while running, it will 19410c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * be run again afterwards but without any active request. 19420c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball */ 194366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (!host->mrq) { 194466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 19450c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball return; 194666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 1947d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1948d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer(&host->timer); 1949d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1950d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mrq = host->mrq; 1951d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1952d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1953d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 1954d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 1955d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 19561e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!(host->flags & SDHCI_DEVICE_DEAD) && 1957b7b4d3426d2b5ecab21578eb20d8e456a1aace8fBen Dooks ((mrq->cmd && mrq->cmd->error) || 19581e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data && (mrq->data->error || 19591e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data->stop && mrq->data->stop->error))) || 19601e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { 1961645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 1962645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Some controllers need this kick or reset won't work here */ 1963b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { 1964645289dca5021224279e67b4655796cafdfdad00Pierre Ossman unsigned int clock; 1965645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 1966645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* This is to force an update */ 1967645289dca5021224279e67b4655796cafdfdad00Pierre Ossman clock = host->clock; 1968645289dca5021224279e67b4655796cafdfdad00Pierre Ossman host->clock = 0; 1969645289dca5021224279e67b4655796cafdfdad00Pierre Ossman sdhci_set_clock(host, clock); 1970645289dca5021224279e67b4655796cafdfdad00Pierre Ossman } 1971645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 1972645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Spec says we should do both at the same time, but Ricoh 1973645289dca5021224279e67b4655796cafdfdad00Pierre Ossman controllers do not like that. */ 1974d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 1975d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 1976d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1978d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = NULL; 1979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 1980d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 1981d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1982f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 1983d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_deactivate_led(host); 19842f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 1985d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 19865f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1987d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1988d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1989d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_request_done(host->mmc, mrq); 199066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 1991d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1992d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1993d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_timeout_timer(unsigned long data) 1994d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1995d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1996d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1997d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1998d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)data; 1999d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2000d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2001d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2002d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 2003acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Timeout waiting for hardware " 2004acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "interrupt.\n", mmc_hostname(host->mmc)); 2005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2006d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2007d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data) { 200817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 2009d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2010d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 2011d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd) 201217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 2013d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 201417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ETIMEDOUT; 2015d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2016d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2017d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2018d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2019d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 20205f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2021d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2022d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2023d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2024cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data) 2025cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath{ 2026cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath struct sdhci_host *host; 2027cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath unsigned long flags; 2028cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2029cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host = (struct sdhci_host *)data; 2030cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2031cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_lock_irqsave(&host->lock, flags); 2032cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2033cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2034cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2035cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_unlock_irqrestore(&host->lock, flags); 2036cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath} 2037cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2038d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2039d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Interrupt handling * 2041d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2043d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) 2045d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2047d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->cmd) { 2049b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman printk(KERN_ERR "%s: Got command interrupt 0x%08x even " 2050b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no command operation was in progress.\n", 2051b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2052d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2053d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2054d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2055d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 205643b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman if (intmask & SDHCI_INT_TIMEOUT) 205717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 205817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT | 205917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman SDHCI_INT_INDEX)) 206017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -EILSEQ; 206143b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman 2062e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->error) { 2063d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2064e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2065e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2066e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2067e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman /* 2068e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The host can send and interrupt when the busy state has 2069e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * ended, allowing us to wait without wasting CPU cycles. 2070e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Unfortunately this is overloaded on the "data complete" 2071e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * interrupt, so we need to take some care when handling 2072e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * it. 2073e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * 2074e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Note: The 1.0 specification is a bit ambiguous about this 2075e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * feature so there might be some problems with older 2076e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * controllers. 2077e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman */ 2078e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->flags & MMC_RSP_BUSY) { 2079e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->data) 2080e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman DBG("Cannot wait for busy signal when also " 2081e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman "doing a data transfer"); 2082f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ)) 2083e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2084f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks 2085f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks /* The controller does not support the end-of-busy IRQ, 2086f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks * fall through and take the SDHCI_INT_RESPONSE */ 2087e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2088e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2089e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_RESPONSE) 209043b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman sdhci_finish_command(host); 2091d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2092d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 20930957c3339efa333b7895157eb18b9b578394f80cGeorge G. Davis#ifdef CONFIG_MMC_DEBUG 20946882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) 20956882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks{ 20966882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks const char *name = mmc_hostname(host->mmc); 20976882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 *desc = host->adma_desc; 20986882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le32 *dma; 20996882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le16 *len; 21006882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 attr; 21016882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 21026882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_dumpregs(host); 21036882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 21046882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks while (true) { 21056882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks dma = (__le32 *)(desc + 4); 21066882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks len = (__le16 *)(desc + 2); 21076882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks attr = *desc; 21086882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 21096882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n", 21106882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr); 21116882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 21126882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks desc += 8; 21136882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 21146882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks if (attr & 2) 21156882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks break; 21166882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 21176882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks} 21186882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#else 21196882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) { } 21206882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#endif 21216882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 2122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 2123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2126b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 generates _only_ Buffer Read Ready interrupt */ 2127b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (intmask & SDHCI_INT_DATA_AVAIL) { 2128b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) == 2129b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath MMC_SEND_TUNING_BLOCK) { 2130b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 1; 2131b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wake_up(&host->buf_ready_int); 2132b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return; 2133b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2134b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2135b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->data) { 2137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2138e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The "data complete" interrupt is also used to 2139e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * indicate that a busy state has ended. See comment 2140e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * above in sdhci_cmd_irq(). 2141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2142e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) { 2143e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2144e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman sdhci_finish_command(host); 2145e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2146e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2147e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2148d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2149b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman printk(KERN_ERR "%s: Got data interrupt 0x%08x even " 2150b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no data operation was in progress.\n", 2151b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2152d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2153d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2154d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2156d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2157d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_TIMEOUT) 215817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 215922113efd00491310da802f3b1a9a66cfcf415facAries Lee else if (intmask & SDHCI_INT_DATA_END_BIT) 216022113efd00491310da802f3b1a9a66cfcf415facAries Lee host->data->error = -EILSEQ; 216122113efd00491310da802f3b1a9a66cfcf415facAries Lee else if ((intmask & SDHCI_INT_DATA_CRC) && 216222113efd00491310da802f3b1a9a66cfcf415facAries Lee SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) 216322113efd00491310da802f3b1a9a66cfcf415facAries Lee != MMC_BUS_TEST_R) 216417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -EILSEQ; 21656882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks else if (intmask & SDHCI_INT_ADMA_ERROR) { 21666882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks printk(KERN_ERR "%s: ADMA error\n", mmc_hostname(host->mmc)); 21676882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_show_adma_error(host); 21682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->data->error = -EIO; 21696882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 2170d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 217117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (host->data->error) 2172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 2174a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 2175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_transfer_pio(host); 2176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 21776ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman /* 21786ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * We currently don't do anything fancy with DMA 21796ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * boundaries, but as we can't disable the feature 21806ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * we need to at least restart the transfer. 2181f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * 2182f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * According to the spec sdhci_readl(host, SDHCI_DMA_ADDRESS) 2183f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * should return a valid address to continue from, but as 2184f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * some controllers are faulty, don't trust them. 21856ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman */ 2186f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni if (intmask & SDHCI_INT_DMA_END) { 2187f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni u32 dmastart, dmanow; 2188f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmastart = sg_dma_address(host->data->sg); 2189f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = dmastart + host->data->bytes_xfered; 2190f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* 2191f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * Force update to the next DMA block boundary. 2192f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni */ 2193f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = (dmanow & 2194f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) + 2195f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni SDHCI_DEFAULT_BOUNDARY_SIZE; 2196f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = dmanow - dmastart; 2197f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni DBG("%s: DMA base 0x%08x, transferred 0x%06x bytes," 2198f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni " next 0x%08x\n", 2199f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni mmc_hostname(host->mmc), dmastart, 2200f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered, dmanow); 2201f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); 2202f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni } 22036ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman 2204e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2205e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->cmd) { 2206e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman /* 2207e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * Data managed to finish before the 2208e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * command completed. Make sure we do 2209e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * things in the proper order. 2210e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman */ 2211e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data_early = 1; 2212e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } else { 2213e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 2214e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2215e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2216d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22197d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t sdhci_irq(int irq, void *dev_id) 2220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman irqreturn_t result; 222266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = dev_id; 2223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u32 intmask; 2224f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman int cardint = 0; 2225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock(&host->lock); 2227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 222866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) { 222966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock(&host->lock); 223066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter printk(KERN_WARNING "%s: got irq while runtime suspended\n", 223166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 223266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return IRQ_HANDLED; 223366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 223466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 22354e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov intmask = sdhci_readl(host, SDHCI_INT_STATUS); 2236d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 223762df67a523acd7a22d936bf946b1889dbd60ca98Mark Lord if (!intmask || intmask == 0xffffffff) { 2238d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_NONE; 2239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 2240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2241d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2242b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman DBG("*** %s got interrupt: 0x%08x\n", 2243b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(host->mmc), intmask); 2244d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22453192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 2246d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 2247d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_CARD_PRESENT; 2248d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 2249d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo /* 2250d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * There is a observation on i.mx esdhc. INSERT bit will be 2251d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * immediately set again when it gets cleared, if a card is 2252d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * inserted. We have to mask the irq to prevent interrupt 2253d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * storm which will freeze the system. And the REMOVE gets 2254d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * the same situation. 2255d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * 2256d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * More testing are needed here to ensure it works for other 2257d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * platforms though. 2258d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo */ 2259d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo sdhci_mask_irqs(host, present ? SDHCI_INT_CARD_INSERT : 2260d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_REMOVE); 2261d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo sdhci_unmask_irqs(host, present ? SDHCI_INT_CARD_REMOVE : 2262d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_INSERT); 2263d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 22644e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT | 2265d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_REMOVE), SDHCI_INT_STATUS); 2266d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE); 2267d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->card_tasklet); 22683192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 2269d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22703192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & SDHCI_INT_CMD_MASK) { 22714e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK, 22724e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 22733192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK); 2274d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2275d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2276d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_MASK) { 22774e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_DATA_MASK, 22784e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 22793192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); 2280d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2281d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK); 2283d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2284964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman intmask &= ~SDHCI_INT_ERROR; 2285964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman 2286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_BUS_POWER) { 22873192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman printk(KERN_ERR "%s: Card is consuming too much power!\n", 2288d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 22894e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, SDHCI_INT_BUS_POWER, SDHCI_INT_STATUS); 2290d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2291d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22929d26a5d3f2b9c4fe4b2ba491683c6989ecd6ae04Rolf Eike Beer intmask &= ~SDHCI_INT_BUS_POWER; 22933192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman 2294f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (intmask & SDHCI_INT_CARD_INT) 2295f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman cardint = 1; 2296f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 2297f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman intmask &= ~SDHCI_INT_CARD_INT; 2298f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 22993192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask) { 2300acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unexpected interrupt 0x%08x.\n", 23013192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman mmc_hostname(host->mmc), intmask); 2302d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2303d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23044e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask, SDHCI_INT_STATUS); 23053192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 2306d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2307d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_HANDLED; 2308d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23095f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2310d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 2311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock(&host->lock); 2312d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2313f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman /* 2314f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman * We have to delay this as it calls back into the driver. 2315f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman */ 2316f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (cardint) 2317f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmc_signal_sdio_irq(host->mmc); 2318f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 2319d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return result; 2320d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2321d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2322d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2323d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2324d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Suspend/resume * 2325d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2326d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2327d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2328d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_PM 2329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2330b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_suspend_host(struct sdhci_host *host, pm_message_t state) 2331d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2332b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2333a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 23347260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 23357260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2336cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Disable tuning since we are suspending */ 2337cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->version >= SDHCI_SPEC_300 && host->tuning_count && 2338cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_mode == SDHCI_TUNING_MODE_1) { 2339cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 2340cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mod_timer(&host->tuning_timer, jiffies + 2341cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count * HZ); 2342cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 2343cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 23441a13f8fa76c880be41d6b1e6a2b44404bcbfdf9eMatt Fleming ret = mmc_suspend_host(host->mmc); 2345b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (ret) 2346b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ret; 2347a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 2348b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman free_irq(host->irq, host); 2349d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23509bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski if (host->vmmc) 23519bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski ret = regulator_disable(host->vmmc); 23529bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski 23539bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski return ret; 2354d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2355d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2356b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_suspend_host); 2357d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2358b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_resume_host(struct sdhci_host *host) 2359b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 2360b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2361d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23629bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski if (host->vmmc) { 23639bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski int ret = regulator_enable(host->vmmc); 23649bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski if (ret) 23659bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski return ret; 23669bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski } 23679bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski 2368a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2369b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) 2370b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->ops->enable_dma(host); 2371b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2372d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2373b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 2374b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(host->mmc), host); 2375df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman if (ret) 2376df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman return ret; 2377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23782f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); 2379b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmiowb(); 2380b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman 2381b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = mmc_resume_host(host->mmc); 23827260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 23837260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2384cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Set the re-tuning expiration flag */ 2385cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if ((host->version >= SDHCI_SPEC_300) && host->tuning_count && 2386cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath (host->tuning_mode == SDHCI_TUNING_MODE_1)) 2387cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2388cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 23892f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre return ret; 2390d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2391d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2392b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_resume_host); 2393d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23945f619704d18b93869d045abc49e09cdba109b04bDaniel Drakevoid sdhci_enable_irq_wakeups(struct sdhci_host *host) 23955f619704d18b93869d045abc49e09cdba109b04bDaniel Drake{ 23965f619704d18b93869d045abc49e09cdba109b04bDaniel Drake u8 val; 23975f619704d18b93869d045abc49e09cdba109b04bDaniel Drake val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); 23985f619704d18b93869d045abc49e09cdba109b04bDaniel Drake val |= SDHCI_WAKE_ON_INT; 23995f619704d18b93869d045abc49e09cdba109b04bDaniel Drake sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); 24005f619704d18b93869d045abc49e09cdba109b04bDaniel Drake} 24015f619704d18b93869d045abc49e09cdba109b04bDaniel Drake 24025f619704d18b93869d045abc49e09cdba109b04bDaniel DrakeEXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); 24035f619704d18b93869d045abc49e09cdba109b04bDaniel Drake 2404d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif /* CONFIG_PM */ 2405d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 240666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 240766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 240866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host) 240966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 241066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_get_sync(host->mmc->parent); 241166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 241266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 241366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host) 241466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 241566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter pm_runtime_mark_last_busy(host->mmc->parent); 241666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_put_autosuspend(host->mmc->parent); 241766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 241866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 241966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_suspend_host(struct sdhci_host *host) 242066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 242166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 242266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret = 0; 242366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 242466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Disable tuning since we are suspending */ 242566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->version >= SDHCI_SPEC_300 && 242666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->tuning_mode == SDHCI_TUNING_MODE_1) { 242766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter del_timer_sync(&host->tuning_timer); 242866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_NEEDS_RETUNING; 242966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 243066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 243166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 243266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); 243366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 243466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 243566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter synchronize_irq(host->irq); 243666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 243766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 243866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = true; 243966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 244066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 244166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 244266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 244366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_suspend_host); 244466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 244566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_resume_host(struct sdhci_host *host) 244666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 244766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 244866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret = 0, host_flags = host->flags; 244966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 245066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host_flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 245166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->ops->enable_dma) 245266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->ops->enable_dma(host); 245366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 245466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 245566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_init(host, 0); 245666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 245766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Force clock and power re-program */ 245866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->pwr = 0; 245966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->clock = 0; 246066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, &host->mmc->ios); 246166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 246266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios); 246366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host_flags & SDHCI_PV_ENABLED) 246466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_enable_preset_value(host, true); 246566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 246666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Set the re-tuning expiration flag */ 246766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if ((host->version >= SDHCI_SPEC_300) && host->tuning_count && 246866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter (host->tuning_mode == SDHCI_TUNING_MODE_1)) 246966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_NEEDS_RETUNING; 247066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 247166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 247266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 247366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = false; 247466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 247566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable SDIO IRQ */ 247666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if ((host->flags & SDHCI_SDIO_IRQ_ENABLED)) 247766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, true); 247866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 247966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable Card Detection */ 248066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_card_detection(host); 248166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 248266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 248366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 248466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 248566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 248666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_resume_host); 248766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 248866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 248966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2490d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2491d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2492b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman * Device allocation/registration * 2493d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2494d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2495d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2496b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanstruct sdhci_host *sdhci_alloc_host(struct device *dev, 2497b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman size_t priv_size) 2498d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2499d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 2500d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2501d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2502b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(dev == NULL); 2503d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2504b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev); 2505d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!mmc) 2506b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ERR_PTR(-ENOMEM); 2507d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2508d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 2509d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mmc = mmc; 2510d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2511b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return host; 2512b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman} 25138a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 2514b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_alloc_host); 2515d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2516b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_add_host(struct sdhci_host *host) 2517b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 2518b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman struct mmc_host *mmc; 2519f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u32 caps[2]; 2520f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u32 max_current_caps; 2521f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath unsigned int ocr_avail; 2522b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2523d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2524b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(host == NULL); 2525b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host == NULL) 2526b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -EINVAL; 2527d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2528b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = host->mmc; 2529d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2530b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (debug_quirks) 2531b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->quirks = debug_quirks; 253266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (debug_quirks2) 253366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->quirks2 = debug_quirks2; 2534d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2535d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 2536d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman 25374e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->version = sdhci_readw(host, SDHCI_HOST_VERSION); 25382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version = (host->version & SDHCI_SPEC_VER_MASK) 25392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman >> SDHCI_SPEC_VER_SHIFT; 254085105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version > SDHCI_SPEC_300) { 25414a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman printk(KERN_ERR "%s: Unknown controller version (%d). " 2542b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "You may experience problems.\n", mmc_hostname(mmc), 25432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version); 25444a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman } 25454a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman 2546f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath caps[0] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps : 2547ccc92c23240cdf952ef7cc39ba563910dcbc9cbeMaxim Levitsky sdhci_readl(host, SDHCI_CAPABILITIES); 2548d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2549f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath caps[1] = (host->version >= SDHCI_SPEC_300) ? 2550f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_readl(host, SDHCI_CAPABILITIES_1) : 0; 2551f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2552b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_FORCE_DMA) 2553a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2554f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath else if (!(caps[0] & SDHCI_CAN_DO_SDMA)) 2555a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors DBG("Controller doesn't have SDMA capability\n"); 25566743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else 2557a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2558d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2559b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) && 2560a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA)) { 2561cee687ce4ab1197e20d4dacc09df01531362fdbdRolf Eike Beer DBG("Disabling DMA as it is marked broken\n"); 2562a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= ~SDHCI_USE_SDMA; 25637c168e3db7d900008ee304574057e0dc1a8505afFeng Tang } 25647c168e3db7d900008ee304574057e0dc1a8505afFeng Tang 2565f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if ((host->version >= SDHCI_SPEC_200) && 2566f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath (caps[0] & SDHCI_CAN_DO_ADMA2)) 2567a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_ADMA; 25682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 25692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) && 25702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) { 25712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Disabling ADMA as it is marked broken\n"); 25722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 25732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 25742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 2575a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2576b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) { 2577b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma(host)) { 2578b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman printk(KERN_WARNING "%s: No suitable DMA " 2579b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman "available. Falling back to PIO.\n", 2580b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(mmc)); 2581a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= 2582a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA); 2583b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2584d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2585d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2586d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 25882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 25892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We need to allocate descriptors for all sg entries 25902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (128) and potentially one alignment transfer for 25912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * each of those entries. 25922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 25932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = kmalloc((128 * 2 + 1) * 4, GFP_KERNEL); 25942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = kmalloc(128 * 4, GFP_KERNEL); 25952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (!host->adma_desc || !host->align_buffer) { 25962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 25972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 25982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman printk(KERN_WARNING "%s: Unable to allocate ADMA " 25992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "buffers. Falling back to standard DMA.\n", 26002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc_hostname(mmc)); 26012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 26022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 26032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 26042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 26057659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman /* 26067659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * If we use DMA, then it's up to the caller to set the DMA 26077659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask, but PIO does not need the hw shim so we set a new 26087659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask here in that case. 26097659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman */ 2610a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) { 26117659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->dma_mask = DMA_BIT_MASK(64); 26127659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman mmc_dev(host->mmc)->dma_mask = &host->dma_mask; 26137659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman } 2614d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2615c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao if (host->version >= SDHCI_SPEC_300) 2616f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_V3_BASE_MASK) 2617c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2618c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao else 2619f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_BASE_MASK) 2620c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2621c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao 26224240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk *= 1000000; 2623f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov if (host->max_clk == 0 || host->quirks & 2624f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN) { 26254240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks if (!host->ops->get_max_clock) { 26264240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks printk(KERN_ERR 26274240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "%s: Hardware doesn't specify base clock " 26284240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "frequency.\n", mmc_hostname(mmc)); 26294240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks return -ENODEV; 26304240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks } 26314240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk = host->ops->get_max_clock(host); 26328ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman } 2633d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2634d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2635c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case of Host Controller v3.00, find out whether clock 2636c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is supported. 2637c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2638c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul = (caps[1] & SDHCI_CLOCK_MUL_MASK) >> 2639c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath SDHCI_CLOCK_MUL_SHIFT; 2640c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2641c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2642c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case the value in Clock Multiplier is 0, then programmable 2643c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * clock mode is not supported, otherwise the actual clock 2644c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is one more than the value of Clock Multiplier 2645c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * in the Capabilities Register. 2646c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2647c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) 2648c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul += 1; 2649c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2650c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2651d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Set host parameters. 2652d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2653d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->ops = &sdhci_ops; 2654c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk; 2655ce5f036bbbfc6c21d7b55b8fdaa2e2bd56392d94Marek Szyprowski if (host->ops->get_min_clock) 2656a9e58f25734e153b8c6516d904e2398fb8b0b23dAnton Vorontsov mmc->f_min = host->ops->get_min_clock(host); 2657c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else if (host->version >= SDHCI_SPEC_300) { 2658c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 2659c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = (host->max_clk * host->clk_mul) / 1024; 2660c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk * host->clk_mul; 2661c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 2662c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300; 2663c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 26640397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200; 266515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity 2666272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk = 2667272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; 2668272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->timeout_clk == 0) { 2669272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->ops->get_timeout_clock) { 2670272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk = host->ops->get_timeout_clock(host); 2671272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } else if (!(host->quirks & 2672272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) { 2673272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko printk(KERN_ERR 2674272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko "%s: Hardware doesn't specify timeout clock " 2675272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko "frequency.\n", mmc_hostname(mmc)); 2676272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko return -ENODEV; 2677272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } 2678272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } 2679272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) 2680272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk *= 1000; 2681272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 2682272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) 268365be3fef930beb3e282e7f23dfba63289971430cAndy Shevchenko host->timeout_clk = mmc->f_max / 1000; 2684272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 268565be3fef930beb3e282e7f23dfba63289971430cAndy Shevchenko mmc->max_discard_to = (1 << 27) / host->timeout_clk; 268658d1246db340793c408b22884598e4ce4d1d4abaAdrian Hunter 2687e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; 2688e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 2689e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) 2690e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->flags |= SDHCI_AUTO_CMD12; 26915fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov 26928edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin /* Auto-CMD23 stuff only works in ADMA or PIO. */ 26934f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin if ((host->version >= SDHCI_SPEC_300) && 26948edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin ((host->flags & SDHCI_USE_ADMA) || 26954f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin !(host->flags & SDHCI_USE_SDMA))) { 26968edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin host->flags |= SDHCI_AUTO_CMD23; 26978edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc)); 26988edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } else { 26998edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 unavailable\n", mmc_hostname(mmc)); 27008edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 27018edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 270215ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity /* 270315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * A controller may support 8-bit width, but the board itself 270415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * might not have the pins brought out. Boards that support 270515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * 8-bit width must set "mmc->caps |= MMC_CAP_8_BIT_DATA;" in 270615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * their platform code before calling sdhci_add_host(), and we 270715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * won't assume 8-bit width for hosts without that CAP. 270815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity */ 27095fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) 271015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity mmc->caps |= MMC_CAP_4_BIT_DATA; 2711d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2712f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_DO_HISPD) 2713a29e7e18bddde778deb2cb101dbceca56b15e05eZhangfei Gao mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; 2714cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 2715176d1ed426a2a73a87c62a8aa05f6d002353cd50Jaehoon Chung if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) && 2716176d1ed426a2a73a87c62a8aa05f6d002353cd50Jaehoon Chung mmc_card_is_removable(mmc)) 271768d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov mmc->caps |= MMC_CAP_NEEDS_POLL; 271868d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 2719f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* UHS-I mode(s) supported by the host controller. */ 2720f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->version >= SDHCI_SPEC_300) 2721f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; 2722f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2723f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* SDR104 supports also implies SDR50 support */ 2724f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[1] & SDHCI_SUPPORT_SDR104) 2725f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50; 2726f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath else if (caps[1] & SDHCI_SUPPORT_SDR50) 2727f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR50; 2728f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2729f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[1] & SDHCI_SUPPORT_DDR50) 2730f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_DDR50; 2731f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2732b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* Does the host needs tuning for SDR50? */ 2733b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (caps[1] & SDHCI_USE_SDR50_TUNING) 2734b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->flags |= SDHCI_SDR50_NEEDS_TUNING; 2735b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2736d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Driver Type(s) (A, C, D) supported by the host */ 2737d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_A) 2738d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_A; 2739d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_C) 2740d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_C; 2741d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_D) 2742d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_D; 2743d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 2744cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initial value for re-tuning timer count */ 2745cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >> 2746cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_TIMER_COUNT_SHIFT; 2747cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2748cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 2749cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case Re-tuning Timer is not disabled, the actual value of 2750cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * re-tuning timer will be 2 ^ (n - 1). 2751cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 2752cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->tuning_count) 2753cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = 1 << (host->tuning_count - 1); 2754cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2755cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Re-tuning mode supported by the Host Controller */ 2756cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_mode = (caps[1] & SDHCI_RETUNING_MODE_MASK) >> 2757cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_MODE_SHIFT; 2758cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 27598f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail = 0; 2760f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 2761f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * According to SD Host Controller spec v3.00, if the Host System 2762f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * can afford more than 150mA, Host Driver should set XPC to 1. Also 2763f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * the value is meaningful only if Voltage Support in the Capabilities 2764f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * register is set. The actual current value is 4 times the register 2765f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * value. 2766f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 2767f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT); 2768f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2769f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_330) { 2770f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath int max_current_330; 2771f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 27728f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_32_33 | MMC_VDD_33_34; 2773f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2774f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath max_current_330 = ((max_current_caps & 2775f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_MASK) >> 2776f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_SHIFT) * 2777f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 2778f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2779f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (max_current_330 > 150) 2780f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_SET_XPC_330; 2781f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 2782f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_300) { 2783f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath int max_current_300; 2784f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 27858f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_29_30 | MMC_VDD_30_31; 2786f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2787f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath max_current_300 = ((max_current_caps & 2788f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_MASK) >> 2789f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_SHIFT) * 2790f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 2791f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2792f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (max_current_300 > 150) 2793f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_SET_XPC_300; 2794f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 2795f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_180) { 2796f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath int max_current_180; 2797f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 27988f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_165_195; 27998f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai 2800f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath max_current_180 = ((max_current_caps & 2801f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_MASK) >> 2802f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_SHIFT) * 2803f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 2804f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2805f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (max_current_180 > 150) 2806f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_SET_XPC_180; 28075371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 28085371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath /* Maximum current capabilities of the host at 1.8V */ 28095371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (max_current_180 >= 800) 28105371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath mmc->caps |= MMC_CAP_MAX_CURRENT_800; 28115371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (max_current_180 >= 600) 28125371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath mmc->caps |= MMC_CAP_MAX_CURRENT_600; 28135371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (max_current_180 >= 400) 28145371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath mmc->caps |= MMC_CAP_MAX_CURRENT_400; 28155371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else 28165371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath mmc->caps |= MMC_CAP_MAX_CURRENT_200; 2817f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 2818f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 28198f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail = ocr_avail; 28208f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio = ocr_avail; 28218f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sdio) 28228f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio &= host->ocr_avail_sdio; 28238f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd = ocr_avail; 28248f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 28258f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= host->ocr_avail_sd; 28268f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai else /* normal SD controllers don't support 1.8V */ 28278f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= ~MMC_VDD_165_195; 28288f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc = ocr_avail; 28298f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_mmc) 28308f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc &= host->ocr_avail_mmc; 2831146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 2832146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (mmc->ocr_avail == 0) { 2833146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman printk(KERN_ERR "%s: Hardware doesn't report any " 2834b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "support voltages.\n", mmc_hostname(mmc)); 2835b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -ENODEV; 2836146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 2837146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 2838d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_init(&host->lock); 2839d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2840d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 28412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Maximum number of segments. Depends on if the hardware 28422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * can do scatter/gather or not. 2843d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 28442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 2845a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 2846a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors else if (host->flags & SDHCI_USE_SDMA) 2847a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 1; 28482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else /* PIO */ 2849a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 2850d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2851d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2852bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman * Maximum number of sectors in one transfer. Limited by DMA boundary 285355db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * size (512KiB). 2854d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 285555db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_req_size = 524288; 2856d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2857d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2858d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum segment size. Could be one segment with the maximum number 28592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * of bytes. When doing hardware scatter/gather, each entry cannot 28602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * be larger than 64 KiB though. 2861d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 286230652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->flags & SDHCI_USE_ADMA) { 286330652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC) 286430652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65535; 286530652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson else 286630652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65536; 286730652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } else { 28682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_seg_size = mmc->max_req_size; 286930652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } 2870d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2871d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2872fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * Maximum block size. This varies from controller to controller and 2873fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * is specified in the capabilities register. 2874fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman */ 28750633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) { 28760633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 2; 28770633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } else { 2878f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >> 28790633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov SDHCI_MAX_BLOCK_SHIFT; 28800633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (mmc->max_blk_size >= 3) { 28810633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov printk(KERN_WARNING "%s: Invalid maximum block size, " 28820633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov "assuming 512 bytes\n", mmc_hostname(mmc)); 28830633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 0; 28840633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 28850633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 28860633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov 28870633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 512 << mmc->max_blk_size; 2888fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman 2889fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman /* 289055db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * Maximum block count. 289155db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman */ 28921388eefd5a5e6aaa3cb04070bfc2b944c1d24b82Ben Dooks mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 289355db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman 289455db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman /* 2895d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Init tasklets. 2896d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2897d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->card_tasklet, 2898d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_card, (unsigned long)host); 2899d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->finish_tasklet, 2900d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_finish, (unsigned long)host); 2901d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2902e4cad1b5a4851c90c1bcf460062074a2fa10815bAl Viro setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); 2903d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2904cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->version >= SDHCI_SPEC_300) { 2905b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath init_waitqueue_head(&host->buf_ready_int); 2906b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2907cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initialize re-tuning timer */ 2908cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath init_timer(&host->tuning_timer); 2909cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.data = (unsigned long)host; 2910cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.function = sdhci_tuning_timer; 2911cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 2912cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2913dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 2914b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(mmc), host); 2915d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 29168ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto untasklet; 2917d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 29189bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski host->vmmc = regulator_get(mmc_dev(mmc), "vmmc"); 29199bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski if (IS_ERR(host->vmmc)) { 29209bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc)); 29219bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski host->vmmc = NULL; 29229bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski } else { 29239bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski regulator_enable(host->vmmc); 29249bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski } 29259bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski 29262f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 2927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2928d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_MMC_DEBUG 2929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2930d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif 2931d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2932f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 29335dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa snprintf(host->led_name, sizeof(host->led_name), 29345dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa "%s::", mmc_hostname(mmc)); 29355dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa host->led.name = host->led_name; 29362f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness = LED_OFF; 29372f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.default_trigger = mmc_hostname(mmc); 29382f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness_set = sdhci_led_control; 29392f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2940b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = led_classdev_register(mmc_dev(mmc), &host->led); 29412f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman if (ret) 29422f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman goto reset; 29432f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 29442f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 29455f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 29465f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman 2947d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_add_host(mmc); 2948d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2949a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s\n", 2950d1b268630875a7713b5d468a0c03403c5b721c8eKay Sievers mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)), 2951a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_ADMA) ? "ADMA" : 2952a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO"); 2953d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 29547260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 29557260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2956d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 2957d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2958f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 29592f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanreset: 29602f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 29612f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman free_irq(host->irq, host); 29622f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 29638ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanuntasklet: 2964d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 2965d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 2966d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2967d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 2968d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2969d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2970b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_add_host); 2971d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 29721e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanvoid sdhci_remove_host(struct sdhci_host *host, int dead) 2973b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 29741e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman unsigned long flags; 29751e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 29761e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (dead) { 29771e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_lock_irqsave(&host->lock, flags); 29781e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 29791e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->flags |= SDHCI_DEVICE_DEAD; 29801e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 29811e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->mrq) { 29821e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman printk(KERN_ERR "%s: Controller removed during " 29831e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman " transfer!\n", mmc_hostname(host->mmc)); 29841e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 29851e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 29861e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman tasklet_schedule(&host->finish_tasklet); 29871e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 29881e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 29891e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 29901e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 29911e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 29927260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 29937260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2994b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_remove_host(host->mmc); 2995d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2996f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 29972f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman led_classdev_unregister(&host->led); 29982f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 29992f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 30001e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!dead) 30011e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 3002d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3003d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman free_irq(host->irq, host); 3004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer_sync(&host->timer); 3006cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->version >= SDHCI_SPEC_300) 3007cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath del_timer_sync(&host->tuning_timer); 3008d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3009d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 3010d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 30112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 30129bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski if (host->vmmc) { 30139bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski regulator_disable(host->vmmc); 30149bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski regulator_put(host->vmmc); 30159bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski } 30169bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski 30172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 30182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 30192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 30202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = NULL; 30212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = NULL; 3022d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3023d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3024b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_remove_host); 3025d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3026b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanvoid sdhci_free_host(struct sdhci_host *host) 3027d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3028b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_free_host(host->mmc); 3029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3030d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3031b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_free_host); 3032d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3033d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 3034d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3035d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Driver init/exit * 3036d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3037d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 3038d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3039d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __init sdhci_drv_init(void) 3040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3041d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME 304252fbf9c976b36654e08e94c3107ddbaac7e2da33Pierre Ossman ": Secure Digital Host Controller Interface driver\n"); 3043d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); 3044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3045b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return 0; 3046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3047d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __exit sdhci_drv_exit(void) 3049d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3050d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3051d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3052d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_init(sdhci_drv_init); 3053d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_exit(sdhci_drv_exit); 3054d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3055df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanmodule_param(debug_quirks, uint, 0444); 305666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Huntermodule_param(debug_quirks2, uint, 0444); 30576743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 305832710e8fd537adeb53f98dec92e4a77caac512f5Pierre OssmanMODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); 3059b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanMODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver"); 3060d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_LICENSE("GPL"); 30616743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 3062df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre OssmanMODULE_PARM_DESC(debug_quirks, "Force certain quirks."); 306366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterMODULE_PARM_DESC(debug_quirks2, "Force certain other quirks."); 3064