sdhci.c revision 70764a905785ebacc8d44fed7a12fba3db267ae6
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> 19d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/dma-mapping.h> 205a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 21117636092a87a28a013a4acb5de5492645ed620fRalf Baechle#include <linux/scatterlist.h> 22d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 232f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#include <linux/leds.h> 242f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 25d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/mmc/host.h> 26d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 27d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include "sdhci.h" 28d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 29d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DRIVER_NAME "sdhci" 30d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 31d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DBG(f, x...) \ 32c65631781eb0f2e81865017c1484e9aef76e1b61Russell King pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x) 33d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 34f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#if defined(CONFIG_LEDS_CLASS) || (defined(CONFIG_LEDS_CLASS_MODULE) && \ 35f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman defined(CONFIG_MMC_SDHCI_MODULE)) 36f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#define SDHCI_USE_LEDS_CLASS 37f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#endif 38f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman 39df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanstatic unsigned int debug_quirks = 0; 406743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 41d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *); 42d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *); 43d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 44d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *, struct mmc_command *); 45d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *); 46d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 47d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_dumpregs(struct sdhci_host *host) 48d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 49d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n"); 50d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 51d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", 524e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_DMA_ADDRESS), 534e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_HOST_VERSION)); 54d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", 554e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_SIZE), 564e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_COUNT)); 57d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", 584e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_ARGUMENT), 594e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_TRANSFER_MODE)); 60d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", 614e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_PRESENT_STATE), 624e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_HOST_CONTROL)); 63d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", 644e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_POWER_CONTROL), 654e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL)); 66d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", 674e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_WAKE_UP_CONTROL), 684e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_CLOCK_CONTROL)); 69d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", 704e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_TIMEOUT_CONTROL), 714e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_STATUS)); 72d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", 734e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_ENABLE), 744e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_SIGNAL_ENABLE)); 75d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", 764e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_ACMD12_ERR), 774e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_SLOT_INT_STATUS)); 78d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x | Max curr: 0x%08x\n", 794e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_CAPABILITIES), 804e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_MAX_CURRENT)); 81d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 82be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks if (host->flags & SDHCI_USE_ADMA) 83be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks printk(KERN_DEBUG DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n", 84be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ERROR), 85be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ADDRESS)); 86be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks 87d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n"); 88d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 89d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 90d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 91d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 92d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Low level functions * 93d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 94d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 95d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 967260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set) 977260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 987260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov u32 ier; 997260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1007260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier = sdhci_readl(host, SDHCI_INT_ENABLE); 1017260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier &= ~clear; 1027260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier |= set; 1037260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_INT_ENABLE); 1047260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); 1057260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1067260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1077260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_unmask_irqs(struct sdhci_host *host, u32 irqs) 1087260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1097260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, 0, irqs); 1107260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1117260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1127260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_mask_irqs(struct sdhci_host *host, u32 irqs) 1137260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1147260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, irqs, 0); 1157260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1167260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1177260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_set_card_detection(struct sdhci_host *host, bool enable) 1187260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1197260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov u32 irqs = SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT; 1207260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 12168d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 12268d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov return; 12368d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 1247260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov if (enable) 1257260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_unmask_irqs(host, irqs); 1267260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov else 1277260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_mask_irqs(host, irqs); 1287260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1297260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1307260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_enable_card_detection(struct sdhci_host *host) 1317260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1327260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, true); 1337260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1347260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1357260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_disable_card_detection(struct sdhci_host *host) 1367260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1377260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, false); 1387260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1397260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_reset(struct sdhci_host *host, u8 mask) 141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 142e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman unsigned long timeout; 143063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov u32 uninitialized_var(ier); 144e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 145b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { 1464e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & 1478a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman SDHCI_CARD_PRESENT)) 1488a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman return; 1498a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman } 1508a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 151063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) 152063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov ier = sdhci_readl(host, SDHCI_INT_ENABLE); 153063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov 1544e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET); 155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 156e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (mask & SDHCI_RESET_ALL) 157d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = 0; 158d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 159e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* Wait max 100 ms */ 160e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout = 100; 161e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 162e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* hw clears the bit when it's done */ 1634e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) { 164e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (timeout == 0) { 165acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Reset 0x%x never completed.\n", 166e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mmc_hostname(host->mmc), (int)mask); 167e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman sdhci_dumpregs(host); 168e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman return; 169e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman } 170e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout--; 171e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mdelay(1); 172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 173063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov 174063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) 175063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier); 176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 177d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1782f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); 1792f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 1802f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_init(struct sdhci_host *host, int soft) 181d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1822f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) 1832f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA); 1842f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre else 1852f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_ALL); 186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1877260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, 1887260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | 1893192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | 1903192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | 1916aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE); 1922f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 1932f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) { 1942f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre /* force clock reconfiguration */ 1952f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre host->clock = 0; 1962f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_set_ios(host->mmc, &host->mmc->ios); 1972f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre } 1987260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 199d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2007260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_reinit(struct sdhci_host *host) 2017260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 2022f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 2037260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 204d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 205d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 206d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_activate_led(struct sdhci_host *host) 207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 209d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2104e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 211d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_LED; 2124e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 213d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 214d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 215d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_deactivate_led(struct sdhci_host *host) 216d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2194e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_LED; 2214e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 224f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 2252f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanstatic void sdhci_led_control(struct led_classdev *led, 2262f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman enum led_brightness brightness) 2272f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman{ 2282f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman struct sdhci_host *host = container_of(led, struct sdhci_host, led); 2292f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman unsigned long flags; 2302f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2312f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2322f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2332f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman if (brightness == LED_OFF) 2342f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_deactivate_led(host); 2352f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman else 2362f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_activate_led(host); 2372f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2382f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2392f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman} 2402f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 2412f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 242d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 243d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 244d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Core functions * 245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 248a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_read_block_pio(struct sdhci_host *host) 249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2507659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 2517659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 2527244b85bd17313d7d300ee93ec7bfbca1f4ccf3dSteven Noonan u32 uninitialized_var(scratch); 2537659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 255a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO reading\n"); 256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 257a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 2587659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2607659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 262a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 2637659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 2647659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 265d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2667659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 267d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2687659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 2697659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 27014d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 2717659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 272d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2737659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 2747659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (chunk == 0) { 2754e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov scratch = sdhci_readl(host, SDHCI_BUFFER); 2767659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 4; 277a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 2787659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 2797659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman *buf = scratch & 0xFF; 2807659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 2817659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 2827659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch >>= 8; 2837659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk--; 2847659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 285d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 286a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 2877659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 2887659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 2897659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 2907659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 291a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 292d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 293a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_write_block_pio(struct sdhci_host *host) 294a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 2957659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 2967659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 2977659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u32 scratch; 2987659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 299d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 300a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO writing\n"); 301a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 302a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3037659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3047659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 305d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3067659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 307d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 308a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3097659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3107659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 311a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3127659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 3137659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3147659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3157659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 3167659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3177659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3197659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3207659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch |= (u32)*buf << (chunk * 8); 3217659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3227659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3237659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk++; 3247659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 3257659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3267659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if ((chunk == 4) || ((len == 0) && (blksize == 0))) { 3274e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, scratch, SDHCI_BUFFER); 3287659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3297659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 331d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 332d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 3337659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3347659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3357659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3367659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 337a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 338a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 339a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_transfer_pio(struct sdhci_host *host) 340a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 341a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 mask; 342a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 343a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(!host->data); 344a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3457659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 346a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 347a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 348a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 349a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_DATA_AVAILABLE; 350a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 351a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_SPACE_AVAILABLE; 352a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3534a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman /* 3544a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * Some controllers (JMicron JMB38x) mess up the buffer bits 3554a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * for transfers < 4 bytes. As long as it is just one block, 3564a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * we can ignore the bits. 3574a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman */ 3584a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_SMALL_PIO) && 3594a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman (host->data->blocks == 1)) 3604a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman mask = ~0; 3614a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman 3624e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 3633e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY) 3643e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov udelay(100); 3653e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov 366a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 367a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_read_block_pio(host); 368a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 369a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_write_block_pio(host); 370d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3717659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks--; 3727659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 373a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman break; 374a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 375d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 376a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO transfer complete.\n"); 377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 378d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags) 3802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 3812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_save(*flags); 3822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; 3832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 3842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 3852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) 3862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 3872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kunmap_atomic(buffer, KM_BIO_SRC_IRQ); 3882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_restore(*flags); 3892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 3902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 391118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooksstatic void sdhci_set_adma_desc(u8 *desc, u32 addr, int len, unsigned cmd) 392118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks{ 3939e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le32 *dataddr = (__le32 __force *)(desc + 4); 3949e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le16 *cmdlen = (__le16 __force *)desc; 395118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 3969e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks /* SDHCI specification says ADMA descriptors should be 4 byte 3979e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks * aligned, so using 16 or 32bit operations should be safe. */ 398118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 3999e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[0] = cpu_to_le16(cmd); 4009e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[1] = cpu_to_le16(len); 4019e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks 4029e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks dataddr[0] = cpu_to_le32(addr); 403118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks} 404118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4058f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanstatic int sdhci_adma_table_pre(struct sdhci_host *host, 4062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 4072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 4092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *desc; 4112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 4122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t addr; 4132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t align_addr; 4142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int len, offset; 4152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 4172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i; 4182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 4192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 4202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The spec does not specify endianness of descriptor table. 4232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We currently guess that it is LE. 4242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 4272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 4282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 4292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 4302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The ADMA descriptor table is mapped further down as we 4332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * need to fill it with data first. 4342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr = dma_map_single(mmc_dev(host->mmc), 4372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer, 128 * 4, direction); 4388d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(mmc_dev(host->mmc), host->align_addr)) 4398f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto fail; 4402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->align_addr & 0x3); 4412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->sg_count = dma_map_sg(mmc_dev(host->mmc), 4432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg, data->sg_len, direction); 4448f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->sg_count == 0) 4458f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_align; 4462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc = host->adma_desc; 4482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 4492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr = host->align_addr; 4512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 4532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr = sg_dma_address(sg); 4542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len = sg_dma_len(sg); 4552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The SDHCI specification states that ADMA 4582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * addresses must be 32-bit aligned. If they 4592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * aren't, then we use a bounce buffer for 4602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * the (up to three) bytes that screw up the 4612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment. 4622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman offset = (4 - (addr & 0x3)) & 0x3; 4642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (offset) { 4652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 4662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 4676cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 4682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(align, buffer, offset); 4692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 4702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 4712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 472118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 473118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, align_addr, offset, 0x21); 4742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(offset > 65536); 4762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 4782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr += 4; 4792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 4812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr += offset; 4832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len -= offset; 4842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 4852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(len > 65536); 4872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 488118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 489118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, addr, len, 0x21); 4902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 4912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * If this triggers then we have a calculation bug 4942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * somewhere. :/ 4952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman WARN_ON((desc - host->adma_desc) > (128 * 2 + 1) * 4); 4972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 4982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 49970764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) { 50070764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 50170764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Mark the last descriptor as the terminating descriptor 50270764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 50370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (desc != host->adma_desc) { 50470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc -= 8; 50570764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc[0] |= 0x2; /* end */ 50670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 50770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } else { 50870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 50970764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Add a terminating entry. 51070764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 5112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 51270764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* nop, end, valid */ 51370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham sdhci_set_adma_desc(desc, 0, 0, 0x3); 51470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 5152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Resync align buffer as we might have changed it. 5182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_single_for_device(mmc_dev(host->mmc), 5212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr, 128 * 4, direction); 5222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_addr = dma_map_single(mmc_dev(host->mmc), 5252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc, (128 * 2 + 1) * 4, DMA_TO_DEVICE); 526980167b7fb20fb181766218b4771fc7420a7bbb4Pierre Ossman if (dma_mapping_error(mmc_dev(host->mmc), host->adma_addr)) 5278f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_entries; 5282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->adma_addr & 0x3); 5298f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 5308f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return 0; 5318f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 5328f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_entries: 5338f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 5348f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg_len, direction); 5358f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_align: 5368f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 5378f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 128 * 4, direction); 5388f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanfail: 5398f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return -EINVAL; 5402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 5412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_adma_table_post(struct sdhci_host *host, 5432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 5442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 5452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 5462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 5482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i, size; 5492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 5502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 5512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 5522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 5542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 5552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 5562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 5572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->adma_addr, 5592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (128 * 2 + 1) * 4, DMA_TO_DEVICE); 5602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 5622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 128 * 4, direction); 5632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) { 5652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg, 5662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 5672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 5692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 5712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg_dma_address(sg) & 0x3) { 5722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman size = 4 - (sg_dma_address(sg) & 0x3); 5732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 5756cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 5762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(buffer, align, size); 5772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 5782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 5802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 5852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 5862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 5872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 588ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossmanstatic u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data) 589d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 5901c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman u8 count; 5911c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman unsigned target_timeout, current_timeout; 592d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 593ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* 594ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * If the host controller provides us with an incorrect timeout 595ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * value, just skip the check and use 0xE. The hardware may take 596ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * longer to time out, but that's much better than having a too-short 597ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * timeout value. 598ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman */ 59911a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) 600ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return 0xE; 601e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 6021c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* timeout in us */ 6031c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman target_timeout = data->timeout_ns / 1000 + 6041c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman data->timeout_clks / host->clock; 605d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 60681b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) 60781b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov host->timeout_clk = host->clock / 1000; 60881b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov 6091c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* 6101c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * Figure out needed cycles. 6111c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * We do this in steps in order to fit inside a 32 bit int. 6121c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * The first step is the minimum timeout, which will have a 6131c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * minimum resolution of 6 bits: 6141c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) 2^13*1000 > 2^22, 6151c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (2) host->timeout_clk < 2^16 6161c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * => 6171c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) / (2) > 2^6 6181c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman */ 6191c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0; 6201c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout = (1 << 13) * 1000 / host->timeout_clk; 6211c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman while (current_timeout < target_timeout) { 6221c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count++; 6231c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout <<= 1; 6241c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) 6251c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman break; 6261c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 6271c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 6281c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) { 6291c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman printk(KERN_WARNING "%s: Too large timeout requested!\n", 6301c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman mmc_hostname(host->mmc)); 6311c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0xE; 6321c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 6331c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 634ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return count; 635ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman} 636ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 6376aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsovstatic void sdhci_set_transfer_irqs(struct sdhci_host *host) 6386aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov{ 6396aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL; 6406aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR; 6416aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 6426aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov if (host->flags & SDHCI_REQ_USE_DMA) 6436aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, pio_irqs, dma_irqs); 6446aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov else 6456aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, dma_irqs, pio_irqs); 6466aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov} 6476aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 648ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossmanstatic void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) 649ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman{ 650ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman u8 count; 6512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 ctrl; 6528f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman int ret; 653ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 654ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman WARN_ON(host->data); 655ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 656ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman if (data == NULL) 657ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return; 658ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 659ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* Sanity checks */ 660ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz * data->blocks > 524288); 661ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz > host->mmc->max_blk_size); 662ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blocks > 65535); 663ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 664ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data = data; 665ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data_early = 0; 666ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 667ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman count = sdhci_calc_timeout(host, data); 6684e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); 669d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 670a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) 671c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman host->flags |= SDHCI_REQ_USE_DMA; 672c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 6732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 6742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * FIXME: This doesn't account for merging when mapping the 6752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * scatterlist. 6762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 6772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 6782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 6792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 6802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 6822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 6832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 6842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 6852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 6862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) 6872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 6882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 6912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 6922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->length & 0x3) { 6932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 6942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "transfer size (%d)\n", 6952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sg->length); 6962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 6972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 6982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 701c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 702c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 703c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman /* 704c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * The assumption here being that alignment is the same after 705c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * translation to device address space. 706c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman */ 7072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * As we use 3 byte chunks to work around 7152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment problems, we need to check this 7162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * quirk. 7172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) 7222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 7262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 7272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->offset & 0x3) { 7282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 7292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "bad alignment\n"); 7302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 7322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7378f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7388f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7398f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman ret = sdhci_adma_table_pre(host, data); 7408f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (ret) { 7418f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 7428f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 7438f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 7448f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 7458f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 746ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7478f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 7484e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, host->adma_addr, 7494e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_ADMA_ADDRESS); 7508f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 7518f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 752c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler int sg_cnt; 7538f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 754c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler sg_cnt = dma_map_sg(mmc_dev(host->mmc), 7558f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg, data->sg_len, 7568f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman (data->flags & MMC_DATA_READ) ? 7578f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_FROM_DEVICE : 7588f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_TO_DEVICE); 759c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler if (sg_cnt == 0) { 7608f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 7618f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 7628f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 7638f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 7648f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 765ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7668f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 767719a61b452ff74cf81a96e4212748d9d63bcc924Pierre Ossman WARN_ON(sg_cnt != 1); 7684e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, sg_dma_address(data->sg), 7694e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_DMA_ADDRESS); 7708f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 7718f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 7728f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 7738f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 7742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Always adjust the DMA selection as some controllers 7762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (e.g. JMicron) can't do PIO properly when the selection 7772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * is ADMA. 7782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->version >= SDHCI_SPEC_200) { 7804e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 7812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl &= ~SDHCI_CTRL_DMA_MASK; 7822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->flags & SDHCI_REQ_USE_DMA) && 7832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) 7842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_ADMA32; 7852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 7862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_SDMA; 7874e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 788c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 789c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 7908f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (!(host->flags & SDHCI_REQ_USE_DMA)) { 791da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior int flags; 792da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior 793da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags = SG_MITER_ATOMIC; 794da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior if (host->data->flags & MMC_DATA_READ) 795da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_TO_SG; 796da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior else 797da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_FROM_SG; 798da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags); 7997659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks = data->blocks; 800d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 801c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8026aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_set_transfer_irqs(host); 8036aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 804bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman /* We do not handle DMA boundaries, so set it to max (512 KiB) */ 8054e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, data->blksz), SDHCI_BLOCK_SIZE); 8064e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); 807c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman} 808c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 809c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossmanstatic void sdhci_set_transfer_mode(struct sdhci_host *host, 810c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman struct mmc_data *data) 811c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman{ 812c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman u16 mode; 813c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 814c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data == NULL) 815c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman return; 816c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 817e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman WARN_ON(!host->data); 818e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 819c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode = SDHCI_TRNS_BLK_CNT_EN; 820c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->blocks > 1) 821c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_MULTI; 822c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->flags & MMC_DATA_READ) 823c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_READ; 824c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) 825c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_DMA; 826c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8274e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, mode, SDHCI_TRANSFER_MODE); 828d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 829d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 830d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *host) 831d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 832d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_data *data; 833d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 834d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!host->data); 835d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 836d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data = host->data; 837d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 838d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 839c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 8402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 8412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_adma_table_post(host, data); 8422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else { 8432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 8442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, (data->flags & MMC_DATA_READ) ? 8452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DMA_FROM_DEVICE : DMA_TO_DEVICE); 8462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 847d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 848d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 849d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 850c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * The specification states that the block count register must 851c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * be updated, but it does not specify at what point in the 852c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * data flow. That makes the register entirely useless to read 853c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * back so we have to assume that nothing made it to the card 854c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * in the event of an error. 855d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 856c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman if (data->error) 857c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = 0; 858d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 859c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = data->blksz * data->blocks; 860d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 861d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (data->stop) { 862d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 863d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 864d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 865d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 86617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (data->error) { 867d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 868d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 869d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 870d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 871d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, data->stop); 872d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 873d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 874d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 875d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 876d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 877d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 878d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int flags; 879fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman u32 mask; 8807cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 881d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 882d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->cmd); 883d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 884d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 8857cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 886fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 887fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask = SDHCI_CMD_INHIBIT; 888fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) 889fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask |= SDHCI_DATA_INHIBIT; 890fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 891fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman /* We shouldn't wait for data inihibit for stop commands, even 892fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman though they might use busy signaling */ 893fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if (host->mrq->data && (cmd == host->mrq->data->stop)) 894fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask &= ~SDHCI_DATA_INHIBIT; 895fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 8964e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 8977cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 898d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Controller never released " 899acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "inhibit bit(s).\n", mmc_hostname(host->mmc)); 900d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 90117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EIO; 902d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 903d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 904d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 9057cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 9067cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 9077cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 908d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 909d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mod_timer(&host->timer, jiffies + 10 * HZ); 910d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 911d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = cmd; 912d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 913d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_prepare_data(host, cmd->data); 914d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9154e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); 916d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 917c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman sdhci_set_transfer_mode(host, cmd->data); 918c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 919d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { 920acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unsupported response type!\n", 921d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 92217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EINVAL; 923d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 924d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 925d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 926d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(cmd->flags & MMC_RSP_PRESENT)) 928d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_NONE; 929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_136) 930d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_LONG; 931d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_BUSY) 932d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT_BUSY; 933d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 934d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT; 935d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 936d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_CRC) 937d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_CRC; 938d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_OPCODE) 939d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_INDEX; 940d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->data) 941d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_DATA; 942d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9434e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); 944d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 945d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 946d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *host) 947d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 948d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 949d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 950d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(host->cmd == NULL); 951d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 952d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_PRESENT) { 953d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_136) { 954d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* CRC is stripped so we need to do some shifting. */ 955d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < 4;i++) { 9564e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[i] = sdhci_readl(host, 957d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4) << 8; 958d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (i != 3) 959d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] |= 9604e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, 961d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4-1); 962d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 963d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 9644e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE); 965d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 966d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 967d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 96817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = 0; 969d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 970e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->data && host->data_early) 971e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 972e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 973e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (!host->cmd->data) 974d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 975d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 976d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 978d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) 980d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 981d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int div; 982d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u16 clk; 9837cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 984d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 985d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == host->clock) 986d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 987d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9888114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->ops->set_clock) { 9898114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov host->ops->set_clock(host, clock); 9908114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) 9918114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov return; 9928114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov } 9938114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov 9944e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); 995d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 996d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == 0) 997d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 998d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 999d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (div = 1;div < 256;div *= 2) { 1000d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((host->max_clk / div) <= clock) 1001d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman break; 1002d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1003d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman div >>= 1; 1004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk = div << SDHCI_DIVIDER_SHIFT; 1006d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_INT_EN; 10074e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1008d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 100927f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball /* Wait max 20 ms */ 101027f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball timeout = 20; 10114e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) 10127cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman & SDHCI_CLOCK_INT_STABLE)) { 10137cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 1014acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Internal clock never " 1015acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "stabilised.\n", mmc_hostname(host->mmc)); 1016d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1017d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1018d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 10197cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 10207cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 10217cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1022d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1023d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_CARD_EN; 10244e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1025d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1026d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 1027d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = clock; 1028d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1030146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossmanstatic void sdhci_set_power(struct sdhci_host *host, unsigned short power) 1031146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman{ 1032146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman u8 pwr; 1033146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1034ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (power == (unsigned short)-1) 1035ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = 0; 1036ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman else { 1037ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman switch (1 << power) { 1038ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_165_195: 1039ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_180; 1040ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1041ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_29_30: 1042ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_30_31: 1043ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_300; 1044ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1045ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_32_33: 1046ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_33_34: 1047ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_330; 1048ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1049ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman default: 1050ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman BUG(); 1051ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1052ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1053ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1054ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (host->pwr == pwr) 1055146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman return; 1056146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1057ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman host->pwr = pwr; 1058ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1059ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (pwr == 0) { 10604e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1061ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman return; 10629e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt } 10639e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 10649e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt /* 10659e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * Spec says that we should clear the power reg before setting 10669e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * a new value. Some controllers don't seem to like this though. 10679e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt */ 1068b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) 10694e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1070146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1071e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon /* 1072c71f65129a1fb67bc6b9b8d03b493675b5c9302bAndres Salomon * At least the Marvell CaFe chip gets confused if we set the voltage 1073e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon * and set turn on power at the same time, so set the voltage first. 1074e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon */ 107511a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) 1076ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1077e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon 1078ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr |= SDHCI_POWER_ON; 1079146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1080ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1081557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte 1082557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte /* 1083557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * Some controllers need an extra 10ms delay of 10ms before they 1084557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * can apply clock after applying power 1085557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte */ 108611a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER) 1087557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte mdelay(10); 1088146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman} 1089146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1090d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1091d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1092d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * MMC callbacks * 1093d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1094d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1095d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1096d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) 1097d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1098d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 109968d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov bool present; 1100d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1101d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1102d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1103d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1104d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1105d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->mrq != NULL); 1107d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1108f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 1109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_activate_led(host); 11102f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 1111d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1112d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = mrq; 1113d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 111468d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov /* If polling, assume that the card is always present. */ 111568d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 111668d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov present = true; 111768d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov else 111868d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 111968d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov SDHCI_CARD_PRESENT; 112068d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 112168d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (!present || host->flags & SDHCI_DEVICE_DEAD) { 112217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 1123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 1125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, mrq->cmd); 1126d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 11275f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 1132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 1136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1138d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 11411e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 11421e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman goto out; 11431e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1144d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1145d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Reset the chip on each power off. 1146d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Should clear out any weird states. 1147d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1148d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) { 11494e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 11507260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_reinit(host); 1151d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1152d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1153d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_set_clock(host, ios->clock); 1154d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) 1156146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, -1); 1157d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1158146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, ios->vdd); 1159d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 11604e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 1161cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->bus_width == MMC_BUS_WIDTH_4) 1163d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_4BITBUS; 1164d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1165d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_4BITBUS; 1166cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1167cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman if (ios->timing == MMC_TIMING_SD_HS) 1168cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl |= SDHCI_CTRL_HISPD; 1169cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman else 1170cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl &= ~SDHCI_CTRL_HISPD; 1171cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 11724e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1174b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo /* 1175b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * Some (ENE) controllers go apeshit on some ios operation, 1176b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * signalling timeout and CRC errors even on CMD0. Resetting 1177b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * it on each ios seems to solve the problem. 1178b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo */ 1179b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) 1180b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 1181b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 11821e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanout: 11835f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1185d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int sdhci_get_ro(struct mmc_host *mmc) 1188d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int present; 1192d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1193d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1196d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 11971e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 11981e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman present = 0; 11991e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman else 12004e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov present = sdhci_readl(host, SDHCI_PRESENT_STATE); 1201d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1202d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1204c5075a1089e808d8f471ce21b02810cc98ab2692Anton Vorontsov if (host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT) 1205c5075a1089e808d8f471ce21b02810cc98ab2692Anton Vorontsov return !!(present & SDHCI_WRITE_PROTECT); 1206d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return !(present & SDHCI_WRITE_PROTECT); 1207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1209f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossmanstatic void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) 1210f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman{ 1211f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman struct sdhci_host *host; 1212f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman unsigned long flags; 1213f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 1214f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman host = mmc_priv(mmc); 1215f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 1216f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1217f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 12181e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 12191e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman goto out; 12201e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1221f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (enable) 12227260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT); 12237260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov else 12247260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_mask_irqs(host, SDHCI_INT_CARD_INT); 12251e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanout: 1226f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmiowb(); 1227f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 1228f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1229f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman} 1230f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 1231ab7aefd0b38297e6d2d71f43e8f81f9f4a36cdaeDavid Brownellstatic const struct mmc_host_ops sdhci_ops = { 1232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .request = sdhci_request, 1233d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .set_ios = sdhci_set_ios, 1234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .get_ro = sdhci_get_ro, 1235f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman .enable_sdio_irq = sdhci_enable_sdio_irq, 1236d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 1237d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1238d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Tasklets * 1241d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1242d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1243d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1244d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_card(unsigned long param) 1245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 1250d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1251d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1252d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12534e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { 1254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 1255d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Card removed during transfer!\n", 1256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 1257d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Resetting controller.\n", 1258d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 1259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1260d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 1261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 1262d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 126317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 1264d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1265d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1266d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1267d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1268d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1269d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 127004cf585d2902404ed06861c6dc27897100340dbaPierre Ossman mmc_detect_change(host->mmc, msecs_to_jiffies(200)); 1271d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1272d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1273d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_finish(unsigned long param) 1274d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1275d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1276d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_request *mrq; 1278d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1279d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 1280d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1281d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1283d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer(&host->timer); 1284d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1285d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mrq = host->mrq; 1286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1288d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 1289d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 1290d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 12911e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!(host->flags & SDHCI_DEVICE_DEAD) && 12921e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->cmd->error || 12931e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data && (mrq->data->error || 12941e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data->stop && mrq->data->stop->error))) || 12951e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { 1296645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 1297645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Some controllers need this kick or reset won't work here */ 1298b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { 1299645289dca5021224279e67b4655796cafdfdad00Pierre Ossman unsigned int clock; 1300645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 1301645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* This is to force an update */ 1302645289dca5021224279e67b4655796cafdfdad00Pierre Ossman clock = host->clock; 1303645289dca5021224279e67b4655796cafdfdad00Pierre Ossman host->clock = 0; 1304645289dca5021224279e67b4655796cafdfdad00Pierre Ossman sdhci_set_clock(host, clock); 1305645289dca5021224279e67b4655796cafdfdad00Pierre Ossman } 1306645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 1307645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Spec says we should do both at the same time, but Ricoh 1308645289dca5021224279e67b4655796cafdfdad00Pierre Ossman controllers do not like that. */ 1309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 1310d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 1311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1312d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1313d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = NULL; 1314d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 1315d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 1316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1317f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 1318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_deactivate_led(host); 13192f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 1320d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 13215f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1322d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1323d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1324d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_request_done(host->mmc, mrq); 1325d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1326d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1327d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_timeout_timer(unsigned long data) 1328d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1331d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1332d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)data; 1333d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1334d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1335d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1336d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 1337acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Timeout waiting for hardware " 1338acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "interrupt.\n", mmc_hostname(host->mmc)); 1339d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1340d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1341d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data) { 134217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 1343d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 1344d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 1345d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd) 134617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 1347d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 134817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ETIMEDOUT; 1349d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1350d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1351d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1352d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1353d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 13545f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1355d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1356d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1357d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1358d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1359d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1360d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Interrupt handling * 1361d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1364d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) 1365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 1367d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1368d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->cmd) { 1369b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman printk(KERN_ERR "%s: Got command interrupt 0x%08x even " 1370b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no command operation was in progress.\n", 1371b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 1372d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1373d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1374d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1375d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 137643b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman if (intmask & SDHCI_INT_TIMEOUT) 137717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 137817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT | 137917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman SDHCI_INT_INDEX)) 138017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -EILSEQ; 138143b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman 1382e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->error) { 1383d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1384e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 1385e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 1386e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 1387e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman /* 1388e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The host can send and interrupt when the busy state has 1389e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * ended, allowing us to wait without wasting CPU cycles. 1390e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Unfortunately this is overloaded on the "data complete" 1391e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * interrupt, so we need to take some care when handling 1392e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * it. 1393e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * 1394e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Note: The 1.0 specification is a bit ambiguous about this 1395e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * feature so there might be some problems with older 1396e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * controllers. 1397e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman */ 1398e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->flags & MMC_RSP_BUSY) { 1399e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->data) 1400e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman DBG("Cannot wait for busy signal when also " 1401e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman "doing a data transfer"); 1402f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ)) 1403e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 1404f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks 1405f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks /* The controller does not support the end-of-busy IRQ, 1406f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks * fall through and take the SDHCI_INT_RESPONSE */ 1407e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 1408e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 1409e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_RESPONSE) 141043b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman sdhci_finish_command(host); 1411d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1412d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14136882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#ifdef DEBUG 14146882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) 14156882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks{ 14166882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks const char *name = mmc_hostname(host->mmc); 14176882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 *desc = host->adma_desc; 14186882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le32 *dma; 14196882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le16 *len; 14206882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 attr; 14216882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 14226882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_dumpregs(host); 14236882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 14246882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks while (true) { 14256882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks dma = (__le32 *)(desc + 4); 14266882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks len = (__le16 *)(desc + 2); 14276882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks attr = *desc; 14286882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 14296882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n", 14306882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr); 14316882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 14326882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks desc += 8; 14336882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 14346882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks if (attr & 2) 14356882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks break; 14366882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 14376882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks} 14386882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#else 14396882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) { } 14406882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#endif 14416882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 1442d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 1443d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1444d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 1445d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1446d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->data) { 1447d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1448e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The "data complete" interrupt is also used to 1449e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * indicate that a busy state has ended. See comment 1450e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * above in sdhci_cmd_irq(). 1451d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1452e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) { 1453e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 1454e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman sdhci_finish_command(host); 1455e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 1456e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 1457e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 1458d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1459b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman printk(KERN_ERR "%s: Got data interrupt 0x%08x even " 1460b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no data operation was in progress.\n", 1461b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 1462d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1463d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1464d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1465d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1466d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1467d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_TIMEOUT) 146817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 146917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT)) 147017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -EILSEQ; 14716882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks else if (intmask & SDHCI_INT_ADMA_ERROR) { 14726882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks printk(KERN_ERR "%s: ADMA error\n", mmc_hostname(host->mmc)); 14736882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_show_adma_error(host); 14742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->data->error = -EIO; 14756882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 1476d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 147717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (host->data->error) 1478d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 1479d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 1480a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 1481d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_transfer_pio(host); 1482d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14836ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman /* 14846ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * We currently don't do anything fancy with DMA 14856ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * boundaries, but as we can't disable the feature 14866ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * we need to at least restart the transfer. 14876ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman */ 14886ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman if (intmask & SDHCI_INT_DMA_END) 14894e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, sdhci_readl(host, SDHCI_DMA_ADDRESS), 14904e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_DMA_ADDRESS); 14916ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman 1492e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 1493e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->cmd) { 1494e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman /* 1495e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * Data managed to finish before the 1496e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * command completed. Make sure we do 1497e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * things in the proper order. 1498e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman */ 1499e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data_early = 1; 1500e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } else { 1501e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 1502e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 1503e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 1504d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1505d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1506d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15077d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t sdhci_irq(int irq, void *dev_id) 1508d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1509d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman irqreturn_t result; 1510d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host* host = dev_id; 1511d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u32 intmask; 1512f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman int cardint = 0; 1513d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1514d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock(&host->lock); 1515d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15164e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov intmask = sdhci_readl(host, SDHCI_INT_STATUS); 1517d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 151862df67a523acd7a22d936bf946b1889dbd60ca98Mark Lord if (!intmask || intmask == 0xffffffff) { 1519d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_NONE; 1520d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 1521d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1522d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1523b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman DBG("*** %s got interrupt: 0x%08x\n", 1524b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(host->mmc), intmask); 1525d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15263192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 15274e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT | 15284e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_CARD_REMOVE), SDHCI_INT_STATUS); 1529d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->card_tasklet); 15303192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 1531d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15323192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE); 1533d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15343192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & SDHCI_INT_CMD_MASK) { 15354e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK, 15364e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 15373192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK); 1538d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1539d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1540d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_MASK) { 15414e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_DATA_MASK, 15424e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 15433192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); 1544d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1545d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1546d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK); 1547d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1548964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman intmask &= ~SDHCI_INT_ERROR; 1549964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman 1550d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_BUS_POWER) { 15513192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman printk(KERN_ERR "%s: Card is consuming too much power!\n", 1552d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 15534e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, SDHCI_INT_BUS_POWER, SDHCI_INT_STATUS); 1554d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1555d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15569d26a5d3f2b9c4fe4b2ba491683c6989ecd6ae04Rolf Eike Beer intmask &= ~SDHCI_INT_BUS_POWER; 15573192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman 1558f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (intmask & SDHCI_INT_CARD_INT) 1559f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman cardint = 1; 1560f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 1561f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman intmask &= ~SDHCI_INT_CARD_INT; 1562f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 15633192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask) { 1564acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unexpected interrupt 0x%08x.\n", 15653192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman mmc_hostname(host->mmc), intmask); 1566d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1567d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15684e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask, SDHCI_INT_STATUS); 15693192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 1570d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1571d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_HANDLED; 1572d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15735f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1574d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 1575d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock(&host->lock); 1576d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1577f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman /* 1578f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman * We have to delay this as it calls back into the driver. 1579f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman */ 1580f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (cardint) 1581f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmc_signal_sdio_irq(host->mmc); 1582f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 1583d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return result; 1584d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1585d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1586d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1587d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1588d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Suspend/resume * 1589d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1590d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1591d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1592d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_PM 1593d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1594b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_suspend_host(struct sdhci_host *host, pm_message_t state) 1595d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1596b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 1597a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 15987260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 15997260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1600b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = mmc_suspend_host(host->mmc, state); 1601b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (ret) 1602b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ret; 1603a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 1604b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman free_irq(host->irq, host); 1605d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1606d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1607d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1608d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1609b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_suspend_host); 1610d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1611b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_resume_host(struct sdhci_host *host) 1612b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 1613b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 1614d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1615a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 1616b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) 1617b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->ops->enable_dma(host); 1618b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 1619d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1620b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 1621b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(host->mmc), host); 1622df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman if (ret) 1623df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman return ret; 1624d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 16252f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); 1626b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmiowb(); 1627b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman 1628b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = mmc_resume_host(host->mmc); 16297260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 16307260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 16312f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre return ret; 1632d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1633d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1634b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_resume_host); 1635d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1636d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif /* CONFIG_PM */ 1637d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1638d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1639d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1640b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman * Device allocation/registration * 1641d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1642d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1643d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1644b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanstruct sdhci_host *sdhci_alloc_host(struct device *dev, 1645b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman size_t priv_size) 1646d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1647d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 1648d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1649d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1650b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(dev == NULL); 1651d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1652b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev); 1653d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!mmc) 1654b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ERR_PTR(-ENOMEM); 1655d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1656d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1657d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mmc = mmc; 1658d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1659b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return host; 1660b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman} 16618a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 1662b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_alloc_host); 1663d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1664b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_add_host(struct sdhci_host *host) 1665b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 1666b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman struct mmc_host *mmc; 1667b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman unsigned int caps; 1668b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 1669d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1670b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(host == NULL); 1671b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host == NULL) 1672b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -EINVAL; 1673d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1674b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = host->mmc; 1675d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1676b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (debug_quirks) 1677b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->quirks = debug_quirks; 1678d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1679d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 1680d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman 16814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->version = sdhci_readw(host, SDHCI_HOST_VERSION); 16822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version = (host->version & SDHCI_SPEC_VER_MASK) 16832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman >> SDHCI_SPEC_VER_SHIFT; 16842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->version > SDHCI_SPEC_200) { 16854a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman printk(KERN_ERR "%s: Unknown controller version (%d). " 1686b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "You may experience problems.\n", mmc_hostname(mmc), 16872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version); 16884a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman } 16894a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman 16904e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov caps = sdhci_readl(host, SDHCI_CAPABILITIES); 1691d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1692b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_FORCE_DMA) 1693a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 1694a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors else if (!(caps & SDHCI_CAN_DO_SDMA)) 1695a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors DBG("Controller doesn't have SDMA capability\n"); 16966743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else 1697a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 1698d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1699b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) && 1700a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA)) { 1701cee687ce4ab1197e20d4dacc09df01531362fdbdRolf Eike Beer DBG("Disabling DMA as it is marked broken\n"); 1702a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= ~SDHCI_USE_SDMA; 17037c168e3db7d900008ee304574057e0dc1a8505afFeng Tang } 17047c168e3db7d900008ee304574057e0dc1a8505afFeng Tang 1705a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if ((host->version >= SDHCI_SPEC_200) && (caps & SDHCI_CAN_DO_ADMA2)) 1706a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_ADMA; 17072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 17082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) && 17092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) { 17102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Disabling ADMA as it is marked broken\n"); 17112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 17122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 17132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 1714a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 1715b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) { 1716b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma(host)) { 1717b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman printk(KERN_WARNING "%s: No suitable DMA " 1718b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman "available. Falling back to PIO.\n", 1719b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(mmc)); 1720a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= 1721a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA); 1722b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 1723d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1724d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1725d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 17262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 17272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 17282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We need to allocate descriptors for all sg entries 17292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (128) and potentially one alignment transfer for 17302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * each of those entries. 17312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 17322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = kmalloc((128 * 2 + 1) * 4, GFP_KERNEL); 17332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = kmalloc(128 * 4, GFP_KERNEL); 17342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (!host->adma_desc || !host->align_buffer) { 17352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 17362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 17372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman printk(KERN_WARNING "%s: Unable to allocate ADMA " 17382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "buffers. Falling back to standard DMA.\n", 17392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc_hostname(mmc)); 17402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 17412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 17422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 17432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 17447659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman /* 17457659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * If we use DMA, then it's up to the caller to set the DMA 17467659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask, but PIO does not need the hw shim so we set a new 17477659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask here in that case. 17487659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman */ 1749a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) { 17507659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->dma_mask = DMA_BIT_MASK(64); 17517659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman mmc_dev(host->mmc)->dma_mask = &host->dma_mask; 17527659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman } 1753d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 17548ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman host->max_clk = 17558ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; 17564240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk *= 1000000; 1757f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov if (host->max_clk == 0 || host->quirks & 1758f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN) { 17594240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks if (!host->ops->get_max_clock) { 17604240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks printk(KERN_ERR 17614240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "%s: Hardware doesn't specify base clock " 17624240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "frequency.\n", mmc_hostname(mmc)); 17634240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks return -ENODEV; 17644240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks } 17654240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk = host->ops->get_max_clock(host); 17668ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman } 1767d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 17681c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman host->timeout_clk = 17691c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; 17701c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (host->timeout_clk == 0) { 177181b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov if (host->ops->get_timeout_clock) { 177281b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov host->timeout_clk = host->ops->get_timeout_clock(host); 177381b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov } else if (!(host->quirks & 177481b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) { 17754240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks printk(KERN_ERR 17764240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "%s: Hardware doesn't specify timeout clock " 17774240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "frequency.\n", mmc_hostname(mmc)); 17784240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks return -ENODEV; 17794240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks } 17801c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 17811c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (caps & SDHCI_TIMEOUT_CLK_UNIT) 17821c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman host->timeout_clk *= 1000; 1783d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1784d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1785d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Set host parameters. 1786d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1787d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->ops = &sdhci_ops; 1788e9510176ff728135383f0cdfc9c90cfe57f9e162Anton Vorontsov if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK && 1789e9510176ff728135383f0cdfc9c90cfe57f9e162Anton Vorontsov host->ops->set_clock && host->ops->get_min_clock) 1790a9e58f25734e153b8c6516d904e2398fb8b0b23dAnton Vorontsov mmc->f_min = host->ops->get_min_clock(host); 1791a9e58f25734e153b8c6516d904e2398fb8b0b23dAnton Vorontsov else 1792a9e58f25734e153b8c6516d904e2398fb8b0b23dAnton Vorontsov mmc->f_min = host->max_clk / 256; 1793d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->f_max = host->max_clk; 17945fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov mmc->caps = MMC_CAP_SDIO_IRQ; 17955fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov 17965fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) 17975fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov mmc->caps |= MMC_CAP_4_BIT_DATA; 1798d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 179986a6a8749d5b8fd5c2b544fe9fd11101e3d0550fPierre Ossman if (caps & SDHCI_CAN_DO_HISPD) 1800cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman mmc->caps |= MMC_CAP_SD_HIGHSPEED; 1801cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 180268d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 180368d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov mmc->caps |= MMC_CAP_NEEDS_POLL; 180468d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 1805146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail = 0; 1806146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (caps & SDHCI_CAN_VDD_330) 1807146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34; 1808c70840e819acdbab96b8cdf71d27cb68c6567efaPierre Ossman if (caps & SDHCI_CAN_VDD_300) 1809146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31; 1810c70840e819acdbab96b8cdf71d27cb68c6567efaPierre Ossman if (caps & SDHCI_CAN_VDD_180) 181155556da01284af8c2174b786b3eca8e11301b656Philip Langdale mmc->ocr_avail |= MMC_VDD_165_195; 1812146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1813146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (mmc->ocr_avail == 0) { 1814146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman printk(KERN_ERR "%s: Hardware doesn't report any " 1815b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "support voltages.\n", mmc_hostname(mmc)); 1816b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -ENODEV; 1817146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 1818146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1819d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_init(&host->lock); 1820d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1821d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 18222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Maximum number of segments. Depends on if the hardware 18232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * can do scatter/gather or not. 1824d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 18252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 18262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_hw_segs = 128; 1827a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors else if (host->flags & SDHCI_USE_SDMA) 1828d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->max_hw_segs = 1; 18292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else /* PIO */ 18302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_hw_segs = 128; 18312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_phys_segs = 128; 1832d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1833d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1834bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman * Maximum number of sectors in one transfer. Limited by DMA boundary 183555db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * size (512KiB). 1836d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 183755db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_req_size = 524288; 1838d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1839d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1840d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum segment size. Could be one segment with the maximum number 18412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * of bytes. When doing hardware scatter/gather, each entry cannot 18422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * be larger than 64 KiB though. 1843d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 18442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 18452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_seg_size = 65536; 18462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 18472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_seg_size = mmc->max_req_size; 1848d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1849d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1850fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * Maximum block size. This varies from controller to controller and 1851fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * is specified in the capabilities register. 1852fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman */ 18530633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) { 18540633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 2; 18550633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } else { 18560633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> 18570633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov SDHCI_MAX_BLOCK_SHIFT; 18580633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (mmc->max_blk_size >= 3) { 18590633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov printk(KERN_WARNING "%s: Invalid maximum block size, " 18600633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov "assuming 512 bytes\n", mmc_hostname(mmc)); 18610633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 0; 18620633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 18630633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 18640633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov 18650633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 512 << mmc->max_blk_size; 1866fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman 1867fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman /* 186855db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * Maximum block count. 186955db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman */ 18701388eefd5a5e6aaa3cb04070bfc2b944c1d24b82Ben Dooks mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 187155db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman 187255db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman /* 1873d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Init tasklets. 1874d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1875d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->card_tasklet, 1876d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_card, (unsigned long)host); 1877d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->finish_tasklet, 1878d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_finish, (unsigned long)host); 1879d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1880e4cad1b5a4851c90c1bcf460062074a2fa10815bAl Viro setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); 1881d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1882dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 1883b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(mmc), host); 1884d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 18858ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto untasklet; 1886d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 18872f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 1888d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1889d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_MMC_DEBUG 1890d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1891d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif 1892d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1893f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 18945dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa snprintf(host->led_name, sizeof(host->led_name), 18955dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa "%s::", mmc_hostname(mmc)); 18965dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa host->led.name = host->led_name; 18972f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness = LED_OFF; 18982f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.default_trigger = mmc_hostname(mmc); 18992f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness_set = sdhci_led_control; 19002f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 1901b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = led_classdev_register(mmc_dev(mmc), &host->led); 19022f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman if (ret) 19032f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman goto reset; 19042f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 19052f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 19065f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 19075f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman 1908d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_add_host(mmc); 1909d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1910a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s\n", 1911d1b268630875a7713b5d468a0c03403c5b721c8eKay Sievers mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)), 1912a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_ADMA) ? "ADMA" : 1913a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO"); 1914d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 19157260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 19167260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1917d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1918d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1919f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 19202f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanreset: 19212f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 19222f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman free_irq(host->irq, host); 19232f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 19248ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanuntasklet: 1925d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 1926d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 1927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1928d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1930d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1931b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_add_host); 1932d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 19331e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanvoid sdhci_remove_host(struct sdhci_host *host, int dead) 1934b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 19351e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman unsigned long flags; 19361e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 19371e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (dead) { 19381e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_lock_irqsave(&host->lock, flags); 19391e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 19401e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->flags |= SDHCI_DEVICE_DEAD; 19411e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 19421e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->mrq) { 19431e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman printk(KERN_ERR "%s: Controller removed during " 19441e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman " transfer!\n", mmc_hostname(host->mmc)); 19451e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 19461e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 19471e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman tasklet_schedule(&host->finish_tasklet); 19481e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 19491e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 19501e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 19511e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 19521e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 19537260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 19547260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1955b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_remove_host(host->mmc); 1956d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1957f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 19582f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman led_classdev_unregister(&host->led); 19592f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 19602f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 19611e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!dead) 19621e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 1963d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1964d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman free_irq(host->irq, host); 1965d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1966d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer_sync(&host->timer); 1967d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1968d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 1969d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 19702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 19712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 19722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 19732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 19742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = NULL; 19752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = NULL; 1976d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1978b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_remove_host); 1979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1980b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanvoid sdhci_free_host(struct sdhci_host *host) 1981d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1982b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_free_host(host->mmc); 1983d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1984d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1985b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_free_host); 1986d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1987d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1988d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1989d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Driver init/exit * 1990d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1991d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1992d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1993d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __init sdhci_drv_init(void) 1994d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1995d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME 199652fbf9c976b36654e08e94c3107ddbaac7e2da33Pierre Ossman ": Secure Digital Host Controller Interface driver\n"); 1997d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); 1998d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1999b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return 0; 2000d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2001d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2002d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __exit sdhci_drv_exit(void) 2003d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2006d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_init(sdhci_drv_init); 2007d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_exit(sdhci_drv_exit); 2008d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2009df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanmodule_param(debug_quirks, uint, 0444); 20106743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 201132710e8fd537adeb53f98dec92e4a77caac512f5Pierre OssmanMODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); 2012b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanMODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver"); 2013d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_LICENSE("GPL"); 20146743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 2015df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre OssmanMODULE_PARM_DESC(debug_quirks, "Force certain quirks."); 2016