sdhci.c revision 964f9ce2ff42dc47cf40fbd2f5c81cd60689e384
1d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/* 2d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * linux/drivers/mmc/sdhci.c - Secure Digital Host Controller Interface driver 3d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * 414d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov * Copyright (C) 2005-2007 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. 10d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 11d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/delay.h> 13d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/highmem.h> 14d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/pci.h> 15d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/dma-mapping.h> 16d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 17d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/mmc/host.h> 18d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 19d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <asm/scatterlist.h> 20d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 21d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include "sdhci.h" 22d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DRIVER_NAME "sdhci" 24d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DBG(f, x...) \ 26c65631781eb0f2e81865017c1484e9aef76e1b61Russell King pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x) 27d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 286743527441430586aa82a0dee1b2700a2a974ebcPierre Ossmanstatic unsigned int debug_nodma = 0; 296743527441430586aa82a0dee1b2700a2a974ebcPierre Ossmanstatic unsigned int debug_forcedma = 0; 30df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanstatic unsigned int debug_quirks = 0; 316743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 32645289dca5021224279e67b4655796cafdfdad00Pierre Ossman#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) 3398608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman#define SDHCI_QUIRK_FORCE_DMA (1<<1) 348a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman/* Controller doesn't like some resets when there is no card inserted. */ 358a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) 369e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) 37645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 38d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic const struct pci_device_id pci_ids[] __devinitdata = { 39645289dca5021224279e67b4655796cafdfdad00Pierre Ossman { 40645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .vendor = PCI_VENDOR_ID_RICOH, 41645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .device = PCI_DEVICE_ID_RICOH_R5C822, 42645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .subvendor = PCI_VENDOR_ID_IBM, 43645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .subdevice = PCI_ANY_ID, 4498608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET | 4598608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman SDHCI_QUIRK_FORCE_DMA, 4698608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman }, 4798608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman 4898608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman { 4998608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .vendor = PCI_VENDOR_ID_RICOH, 5098608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .device = PCI_DEVICE_ID_RICOH_R5C822, 5198608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subvendor = PCI_ANY_ID, 5298608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subdevice = PCI_ANY_ID, 538a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman .driver_data = SDHCI_QUIRK_FORCE_DMA | 548a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman SDHCI_QUIRK_NO_CARD_NO_RESET, 5598608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman }, 5698608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman 5798608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman { 5898608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .vendor = PCI_VENDOR_ID_TI, 5998608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .device = PCI_DEVICE_ID_TI_XX21_XX11_SD, 6098608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subvendor = PCI_ANY_ID, 6198608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subdevice = PCI_ANY_ID, 6298608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .driver_data = SDHCI_QUIRK_FORCE_DMA, 63645289dca5021224279e67b4655796cafdfdad00Pierre Ossman }, 64645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 659e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt { 669e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .vendor = PCI_VENDOR_ID_ENE, 679e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .device = PCI_DEVICE_ID_ENE_CB712_SD, 689e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .subvendor = PCI_ANY_ID, 699e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .subdevice = PCI_ANY_ID, 709e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, 719e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt }, 729e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 737de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov { 747de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .vendor = PCI_VENDOR_ID_ENE, 757de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .device = PCI_DEVICE_ID_ENE_CB712_SD_2, 767de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .subvendor = PCI_ANY_ID, 777de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .subdevice = PCI_ANY_ID, 787de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, 797de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov }, 807de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov 81645289dca5021224279e67b4655796cafdfdad00Pierre Ossman { /* Generic SD host controller */ 82645289dca5021224279e67b4655796cafdfdad00Pierre Ossman PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) 83645289dca5021224279e67b4655796cafdfdad00Pierre Ossman }, 84645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 85d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman { /* end: all zeroes */ }, 86d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 87d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 88d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_DEVICE_TABLE(pci, pci_ids); 89d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 90d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *); 91d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *); 92d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 93d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *, struct mmc_command *); 94d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *); 95d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 96d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_dumpregs(struct sdhci_host *host) 97d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 98d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n"); 99d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 100d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", 101d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_DMA_ADDRESS), 102d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_HOST_VERSION)); 103d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", 104d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_BLOCK_SIZE), 105d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_BLOCK_COUNT)); 106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", 107d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_ARGUMENT), 108d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_TRANSFER_MODE)); 109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", 110d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_PRESENT_STATE), 111d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_HOST_CONTROL)); 112d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", 113d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_POWER_CONTROL), 114d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL)); 115d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", 116d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_WALK_UP_CONTROL), 117d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_CLOCK_CONTROL)); 118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", 119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL), 120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_INT_STATUS)); 121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", 122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_INT_ENABLE), 123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_SIGNAL_ENABLE)); 124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", 125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_ACMD12_ERR), 126d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_SLOT_INT_STATUS)); 127d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x | Max curr: 0x%08x\n", 128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_CAPABILITIES), 129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_MAX_CURRENT)); 130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n"); 132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Low level functions * 137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 138d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_reset(struct sdhci_host *host, u8 mask) 141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 142e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman unsigned long timeout; 143e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 1448a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman if (host->chip->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { 1458a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & 1468a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman SDHCI_CARD_PRESENT)) 1478a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman return; 1488a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman } 1498a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 150d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(mask, host->ioaddr + SDHCI_SOFTWARE_RESET); 151d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 152e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (mask & SDHCI_RESET_ALL) 153d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = 0; 154d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 155e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* Wait max 100 ms */ 156e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout = 100; 157e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 158e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* hw clears the bit when it's done */ 159e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman while (readb(host->ioaddr + SDHCI_SOFTWARE_RESET) & mask) { 160e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (timeout == 0) { 161acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Reset 0x%x never completed.\n", 162e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mmc_hostname(host->mmc), (int)mask); 163e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman sdhci_dumpregs(host); 164e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman return; 165e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman } 166e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout--; 167e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mdelay(1); 168d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 169d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 170d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 171d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_init(struct sdhci_host *host) 172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u32 intmask; 174d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1773192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman intmask = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | 1783192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | 1793192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | 1803192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT | 181a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | 1823192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE; 183d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask, host->ioaddr + SDHCI_INT_ENABLE); 185d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE); 186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 188d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_activate_led(struct sdhci_host *host) 189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 192d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL); 193d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_LED; 194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); 195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 196d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 197d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_deactivate_led(struct sdhci_host *host) 198d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 199d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 200d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 201d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL); 202d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_LED; 203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); 204d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 205d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 206d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Core functions * 209d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 210d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 211d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2122a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossmanstatic inline char* sdhci_sg_to_buffer(struct sdhci_host* host) 213d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2142a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman return page_address(host->cur_sg->page) + host->cur_sg->offset; 215d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 216d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic inline int sdhci_next_sg(struct sdhci_host* host) 218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 219d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Skip to next SG entry. 221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cur_sg++; 223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->num_sg--; 224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Any entries left? 227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 228d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->num_sg > 0) { 229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->offset = 0; 230d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->remain = host->cur_sg->length; 231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 233d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return host->num_sg; 234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 235d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 236a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_read_block_pio(struct sdhci_host *host) 237d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 238a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int blksize, chunk_remain; 239a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 data; 240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman char *buffer; 241a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int size; 242d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 243a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO reading\n"); 244d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 245a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 246a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = 0; 247a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data = 0; 248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2492a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host) + host->offset; 250d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 251a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 252a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (chunk_remain == 0) { 253a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data = readl(host->ioaddr + SDHCI_BUFFER); 254a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = min(blksize, 4); 255a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25714d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov size = min(host->remain, chunk_remain); 258d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 259a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain -= size; 260a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize -= size; 261a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman host->offset += size; 262a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman host->remain -= size; 26314d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 264a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (size) { 265a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman *buffer = data & 0xFF; 266a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman buffer++; 267a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data >>= 8; 268a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman size--; 269a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 270d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 271a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->remain == 0) { 272a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (sdhci_next_sg(host) == 0) { 273a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(blksize != 0); 274a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 275a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 2762a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host); 277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 278a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 279a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 280d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 281a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_write_block_pio(struct sdhci_host *host) 282a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 283a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int blksize, chunk_remain; 284a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 data; 285a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman char *buffer; 286a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int bytes, size; 287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 288a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO writing\n"); 289a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 290a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 291a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = 4; 292a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data = 0; 293d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 294a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman bytes = 0; 2952a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host) + host->offset; 296d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 297a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 29814d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov size = min(host->remain, chunk_remain); 299a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 300a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain -= size; 301a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize -= size; 302d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->offset += size; 303d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->remain -= size; 30414d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 305a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (size) { 306a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data >>= 8; 307a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data |= (u32)*buffer << 24; 308a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman buffer++; 309a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman size--; 310a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 311a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 312a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (chunk_remain == 0) { 313a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman writel(data, host->ioaddr + SDHCI_BUFFER); 314a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = min(blksize, 4); 315a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 317d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->remain == 0) { 318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (sdhci_next_sg(host) == 0) { 319a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(blksize != 0); 320d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 321d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 3222a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host); 323d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 324d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 325a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 326a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 327a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_transfer_pio(struct sdhci_host *host) 328a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 329a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 mask; 330a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 331a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(!host->data); 332a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 33314d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov if (host->num_sg == 0) 334a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 335a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 336a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 337a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_DATA_AVAILABLE; 338a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 339a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_SPACE_AVAILABLE; 340a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 341a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) { 342a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 343a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_read_block_pio(host); 344a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 345a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_write_block_pio(host); 346d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 34714d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov if (host->num_sg == 0) 348a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman break; 349a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 350d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 351a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO transfer complete.\n"); 352d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 353d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 354d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) 355d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3561c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman u8 count; 3571c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman unsigned target_timeout, current_timeout; 358d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 359d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->data); 360d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 361c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data == NULL) 362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 364d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("blksz %04x blks %04x flags %08x\n", 365a3fd4a1b9ced850ac1a9d5bb9f8fab494d07f3faRussell King data->blksz, data->blocks, data->flags); 366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("tsac %d ms nsac %d clk\n", 367d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data->timeout_ns / 1000000, data->timeout_clks); 368d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 369bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman /* Sanity checks */ 370bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman BUG_ON(data->blksz * data->blocks > 524288); 371fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman BUG_ON(data->blksz > host->mmc->max_blk_size); 3721d676e02970d9e511c9b96101501da90954ee265Pierre Ossman BUG_ON(data->blocks > 65535); 373d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3741c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* timeout in us */ 3751c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman target_timeout = data->timeout_ns / 1000 + 3761c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman data->timeout_clks / host->clock; 377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3781c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* 3791c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * Figure out needed cycles. 3801c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * We do this in steps in order to fit inside a 32 bit int. 3811c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * The first step is the minimum timeout, which will have a 3821c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * minimum resolution of 6 bits: 3831c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) 2^13*1000 > 2^22, 3841c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (2) host->timeout_clk < 2^16 3851c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * => 3861c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) / (2) > 2^6 3871c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman */ 3881c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0; 3891c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout = (1 << 13) * 1000 / host->timeout_clk; 3901c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman while (current_timeout < target_timeout) { 3911c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count++; 3921c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout <<= 1; 3931c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) 3941c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman break; 3951c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 3961c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 3971c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) { 3981c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman printk(KERN_WARNING "%s: Too large timeout requested!\n", 3991c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman mmc_hostname(host->mmc)); 4001c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0xE; 4011c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 4021c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 4031c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman writeb(count, host->ioaddr + SDHCI_TIMEOUT_CONTROL); 404d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 405d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) { 406d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int count; 407d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 408d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman count = pci_map_sg(host->chip->pdev, data->sg, data->sg_len, 409d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE); 410d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(count != 1); 411d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 412d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS); 413d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 414d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cur_sg = data->sg; 415d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->num_sg = data->sg_len; 416d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 417d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->offset = 0; 418d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->remain = host->cur_sg->length; 419d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 420c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 421bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman /* We do not handle DMA boundaries, so set it to max (512 KiB) */ 422bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman writew(SDHCI_MAKE_BLKSZ(7, data->blksz), 423bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman host->ioaddr + SDHCI_BLOCK_SIZE); 424c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman writew(data->blocks, host->ioaddr + SDHCI_BLOCK_COUNT); 425c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman} 426c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 427c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossmanstatic void sdhci_set_transfer_mode(struct sdhci_host *host, 428c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman struct mmc_data *data) 429c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman{ 430c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman u16 mode; 431c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 432c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman WARN_ON(host->data); 433c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 434c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data == NULL) 435c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman return; 436c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 437c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode = SDHCI_TRNS_BLK_CNT_EN; 438c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->blocks > 1) 439c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_MULTI; 440c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->flags & MMC_DATA_READ) 441c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_READ; 442c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (host->flags & SDHCI_USE_DMA) 443c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_DMA; 444c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 445c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman writew(mode, host->ioaddr + SDHCI_TRANSFER_MODE); 446d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 447d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 448d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *host) 449d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 450d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_data *data; 451d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u16 blocks; 452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 453d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!host->data); 454d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 455d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data = host->data; 456d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 457d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 458d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) { 459d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_unmap_sg(host->chip->pdev, data->sg, data->sg_len, 460d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE); 461d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 462d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 463d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 464d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Controller doesn't count down when in single block mode. 465d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 466d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((data->blocks == 1) && (data->error == MMC_ERR_NONE)) 467d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman blocks = 0; 468d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 469d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT); 470a3fd4a1b9ced850ac1a9d5bb9f8fab494d07f3faRussell King data->bytes_xfered = data->blksz * (data->blocks - blocks); 471d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 472d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((data->error == MMC_ERR_NONE) && blocks) { 473d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Controller signalled completion even " 474acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "though there were blocks left.\n", 475acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman mmc_hostname(host->mmc)); 476d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data->error = MMC_ERR_FAILED; 477d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 478d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 479d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Ending data transfer (%d bytes)\n", data->bytes_xfered); 480d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 481d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (data->stop) { 482d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 483d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 484d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 485d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 486d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (data->error != MMC_ERR_NONE) { 487d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 488d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 489d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 490d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 491d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, data->stop); 492d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 493d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 494d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 495d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 496d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 497d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 498d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int flags; 499fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman u32 mask; 5007cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 501d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 502d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->cmd); 503d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 504d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Sending cmd (%x)\n", cmd->opcode); 505d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 506d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 5077cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 508fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 509fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask = SDHCI_CMD_INHIBIT; 510fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) 511fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask |= SDHCI_DATA_INHIBIT; 512fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 513fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman /* We shouldn't wait for data inihibit for stop commands, even 514fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman though they might use busy signaling */ 515fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if (host->mrq->data && (cmd == host->mrq->data->stop)) 516fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask &= ~SDHCI_DATA_INHIBIT; 517fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 518fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) { 5197cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 520d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Controller never released " 521acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "inhibit bit(s).\n", mmc_hostname(host->mmc)); 522d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 523d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman cmd->error = MMC_ERR_FAILED; 524d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 525d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 526d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 5277cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 5287cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 5297cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 530d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 531d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mod_timer(&host->timer, jiffies + 10 * HZ); 532d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 533d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = cmd; 534d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 535d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_prepare_data(host, cmd->data); 536d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 537d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(cmd->arg, host->ioaddr + SDHCI_ARGUMENT); 538d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 539c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman sdhci_set_transfer_mode(host, cmd->data); 540c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 541d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { 542acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unsupported response type!\n", 543d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 544d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman cmd->error = MMC_ERR_INVALID; 545d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 546d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 547d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 548d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 549d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(cmd->flags & MMC_RSP_PRESENT)) 550d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_NONE; 551d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_136) 552d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_LONG; 553d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_BUSY) 554d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT_BUSY; 555d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 556d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT; 557d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 558d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_CRC) 559d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_CRC; 560d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_OPCODE) 561d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_INDEX; 562d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->data) 563d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_DATA; 564d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 565fb61e2895170920564410baadf71c5b3561dbf42Pierre Ossman writew(SDHCI_MAKE_CMD(cmd->opcode, flags), 566d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr + SDHCI_COMMAND); 567d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 568d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 569d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *host) 570d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 571d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 572d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 573d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(host->cmd == NULL); 574d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 575d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_PRESENT) { 576d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_136) { 577d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* CRC is stripped so we need to do some shifting. */ 578d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < 4;i++) { 579d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] = readl(host->ioaddr + 580d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4) << 8; 581d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (i != 3) 582d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] |= 583d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + 584d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4-1); 585d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 586d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 587d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[0] = readl(host->ioaddr + SDHCI_RESPONSE); 588d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 589d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 590d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 591d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_NONE; 592d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 593d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Ending cmd (%x)\n", host->cmd->opcode); 594d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 5953192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (host->cmd->data) 596d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = host->cmd->data; 5973192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman else 598d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 599d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 600d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 601d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 602d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 603d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) 604d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 605d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int div; 606d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u16 clk; 6077cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 608d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 609d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == host->clock) 610d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 611d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 612d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL); 613d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 614d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == 0) 615d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 616d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 617d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (div = 1;div < 256;div *= 2) { 618d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((host->max_clk / div) <= clock) 619d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman break; 620d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 621d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman div >>= 1; 622d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 623d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk = div << SDHCI_DIVIDER_SHIFT; 624d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_INT_EN; 625d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); 626d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 627d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 6287cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 6297cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL)) 6307cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman & SDHCI_CLOCK_INT_STABLE)) { 6317cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 632acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Internal clock never " 633acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "stabilised.\n", mmc_hostname(host->mmc)); 634d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 635d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 636d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 6377cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 6387cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 6397cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 640d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 641d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_CARD_EN; 642d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); 643d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 644d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 645d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = clock; 646d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 647d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 648146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossmanstatic void sdhci_set_power(struct sdhci_host *host, unsigned short power) 649146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman{ 650146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman u8 pwr; 651146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 652146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (host->power == power) 653146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman return; 654146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 6559e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt if (power == (unsigned short)-1) { 6569e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); 657146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman goto out; 6589e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt } 6599e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 6609e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt /* 6619e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * Spec says that we should clear the power reg before setting 6629e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * a new value. Some controllers don't seem to like this though. 6639e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt */ 6649e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) 6659e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); 666146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 667146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr = SDHCI_POWER_ON; 668146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 6694be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale switch (1 << power) { 67055556da01284af8c2174b786b3eca8e11301b656Philip Langdale case MMC_VDD_165_195: 671146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr |= SDHCI_POWER_180; 672146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman break; 6734be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_29_30: 6744be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_30_31: 675146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr |= SDHCI_POWER_300; 676146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman break; 6774be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_32_33: 6784be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_33_34: 679146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr |= SDHCI_POWER_330; 680146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman break; 681146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman default: 682146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman BUG(); 683146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 684146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 685146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL); 686146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 687146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossmanout: 688146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman host->power = power; 689146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman} 690146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 691d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 692d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 693d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * MMC callbacks * 694d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 695d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 696d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 697d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) 698d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 699d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 700d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 701d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 702d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 703d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 704d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 705d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 706d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->mrq != NULL); 707d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 708d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_activate_led(host); 709d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 710d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = mrq; 711d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 712d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { 713d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq->cmd->error = MMC_ERR_TIMEOUT; 714d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 715d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 716d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, mrq->cmd); 717d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 7185f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 719d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 720d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 721d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 722d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 723d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 724d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 725d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 726d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 727d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 728d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 729d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 730d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 731d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 732d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 733d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Reset the chip on each power off. 734d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Should clear out any weird states. 735d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 736d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) { 737d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(0, host->ioaddr + SDHCI_SIGNAL_ENABLE); 738d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_init(host); 739d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 740d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 741d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_set_clock(host, ios->clock); 742d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 743d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) 744146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, -1); 745d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 746146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, ios->vdd); 747d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 748d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL); 749cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 750d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->bus_width == MMC_BUS_WIDTH_4) 751d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_4BITBUS; 752d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 753d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_4BITBUS; 754cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 755cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman if (ios->timing == MMC_TIMING_SD_HS) 756cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl |= SDHCI_CTRL_HISPD; 757cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman else 758cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl &= ~SDHCI_CTRL_HISPD; 759cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 760d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); 761d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 7625f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 763d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 764d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 765d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 766d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int sdhci_get_ro(struct mmc_host *mmc) 767d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 768d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 769d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 770d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int present; 771d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 772d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 773d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 774d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 775d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 776d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman present = readl(host->ioaddr + SDHCI_PRESENT_STATE); 777d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 778d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 779d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 780d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return !(present & SDHCI_WRITE_PROTECT); 781d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 782d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 783ab7aefd0b38297e6d2d71f43e8f81f9f4a36cdaeDavid Brownellstatic const struct mmc_host_ops sdhci_ops = { 784d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .request = sdhci_request, 785d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .set_ios = sdhci_set_ios, 786d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .get_ro = sdhci_get_ro, 787d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 788d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 789d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 790d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 791d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Tasklets * 792d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 793d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 794d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 795d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_card(unsigned long param) 796d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 797d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 798d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 799d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 800d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 801d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 802d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 803d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 804d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { 805d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 806d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Card removed during transfer!\n", 807d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 808d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Resetting controller.\n", 809d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 810d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 811d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 812d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 813d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 814d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq->cmd->error = MMC_ERR_FAILED; 815d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 816d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 817d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 818d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 819d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 820d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 821d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_detect_change(host->mmc, msecs_to_jiffies(500)); 822d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 823d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 824d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_finish(unsigned long param) 825d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 826d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 827d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 828d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_request *mrq; 829d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 830d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 831d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 832d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 833d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 834d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer(&host->timer); 835d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 836d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mrq = host->mrq; 837d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 838d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Ending request, cmd (%x)\n", mrq->cmd->opcode); 839d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 840d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 841d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 842d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 843d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 844d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((mrq->cmd->error != MMC_ERR_NONE) || 845d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (mrq->data && ((mrq->data->error != MMC_ERR_NONE) || 846d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) { 847645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 848645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Some controllers need this kick or reset won't work here */ 849645289dca5021224279e67b4655796cafdfdad00Pierre Ossman if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { 850645289dca5021224279e67b4655796cafdfdad00Pierre Ossman unsigned int clock; 851645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 852645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* This is to force an update */ 853645289dca5021224279e67b4655796cafdfdad00Pierre Ossman clock = host->clock; 854645289dca5021224279e67b4655796cafdfdad00Pierre Ossman host->clock = 0; 855645289dca5021224279e67b4655796cafdfdad00Pierre Ossman sdhci_set_clock(host, clock); 856645289dca5021224279e67b4655796cafdfdad00Pierre Ossman } 857645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 858645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Spec says we should do both at the same time, but Ricoh 859645289dca5021224279e67b4655796cafdfdad00Pierre Ossman controllers do not like that. */ 860d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 861d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 862d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 863d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 864d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = NULL; 865d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 866d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 867d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 868d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_deactivate_led(host); 869d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 8705f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 871d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 872d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 873d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_request_done(host->mmc, mrq); 874d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 875d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 876d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_timeout_timer(unsigned long data) 877d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 878d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 879d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 880d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 881d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)data; 882d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 883d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 884d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 885d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 886acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Timeout waiting for hardware " 887acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "interrupt.\n", mmc_hostname(host->mmc)); 888d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 889d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 890d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data) { 891d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_TIMEOUT; 892d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 893d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 894d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd) 895d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_TIMEOUT; 896d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 897d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq->cmd->error = MMC_ERR_TIMEOUT; 898d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 899d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 900d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 901d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 902d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9035f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 904d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 905d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 906d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 907d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 908d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 909d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Interrupt handling * 910d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 911d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 912d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 913d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) 914d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 915d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 916d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 917d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->cmd) { 918d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Got command interrupt even though no " 919d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman "command operation was in progress.\n", 920d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 921d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 922d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 923d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 924d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 925d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_RESPONSE) 926d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_command(host); 927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 928d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_TIMEOUT) 929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_TIMEOUT; 930d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (intmask & SDHCI_INT_CRC) 931d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_BADCRC; 932d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX)) 933d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_FAILED; 934d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 935d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_INVALID; 936d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 937d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 938d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 939d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 940d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 941d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 942d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 943d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 944d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 945d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->data) { 946d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 947d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * A data end interrupt is sent together with the response 948d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * for the stop command. 949d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 950d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_END) 951d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 952d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 953d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Got data interrupt even though no " 954d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman "data operation was in progress.\n", 955d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 956d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 957d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 958d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 959d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 960d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 961d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_TIMEOUT) 962d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_TIMEOUT; 963d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (intmask & SDHCI_INT_DATA_CRC) 964d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_BADCRC; 965d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (intmask & SDHCI_INT_DATA_END_BIT) 966d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_FAILED; 967d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 968d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data->error != MMC_ERR_NONE) 969d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 970d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 971a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 972d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_transfer_pio(host); 973d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9746ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman /* 9756ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * We currently don't do anything fancy with DMA 9766ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * boundaries, but as we can't disable the feature 9776ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * we need to at least restart the transfer. 9786ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman */ 9796ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman if (intmask & SDHCI_INT_DMA_END) 9806ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman writel(readl(host->ioaddr + SDHCI_DMA_ADDRESS), 9816ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman host->ioaddr + SDHCI_DMA_ADDRESS); 9826ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman 983d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_END) 984d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 985d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 986d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 987d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9887d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t sdhci_irq(int irq, void *dev_id) 989d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 990d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman irqreturn_t result; 991d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host* host = dev_id; 992d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u32 intmask; 993d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 994d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock(&host->lock); 995d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 996d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask = readl(host->ioaddr + SDHCI_INT_STATUS); 997d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 99862df67a523acd7a22d936bf946b1889dbd60ca98Mark Lord if (!intmask || intmask == 0xffffffff) { 999d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_NONE; 1000d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 1001d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1002d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1003d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("*** %s got interrupt: 0x%08x\n", host->slot_descr, intmask); 1004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10053192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 10063192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman writel(intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE), 10073192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman host->ioaddr + SDHCI_INT_STATUS); 1008d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->card_tasklet); 10093192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 1010d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10113192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE); 1012d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10133192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & SDHCI_INT_CMD_MASK) { 1014d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask & SDHCI_INT_CMD_MASK, 1015d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr + SDHCI_INT_STATUS); 10163192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK); 1017d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1018d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1019d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_MASK) { 1020d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask & SDHCI_INT_DATA_MASK, 1021d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr + SDHCI_INT_STATUS); 10223192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); 1023d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1024d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1025d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK); 1026d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1027964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman intmask &= ~SDHCI_INT_ERROR; 1028964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman 1029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_BUS_POWER) { 10303192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman printk(KERN_ERR "%s: Card is consuming too much power!\n", 1031d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 10323192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman writel(SDHCI_INT_BUS_POWER, host->ioaddr + SDHCI_INT_STATUS); 1033d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1034d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10359d26a5d3f2b9c4fe4b2ba491683c6989ecd6ae04Rolf Eike Beer intmask &= ~SDHCI_INT_BUS_POWER; 10363192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman 10373192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask) { 1038acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unexpected interrupt 0x%08x.\n", 10393192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman mmc_hostname(host->mmc), intmask); 1040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1041d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask, host->ioaddr + SDHCI_INT_STATUS); 10433192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 1044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1045d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_HANDLED; 1046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10475f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 1049d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock(&host->lock); 1050d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1051d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return result; 1052d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1053d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1054d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1055d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1056d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Suspend/resume * 1057d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1058d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1059d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1060d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_PM 1061d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1062d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int sdhci_suspend (struct pci_dev *pdev, pm_message_t state) 1063d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1064d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1065d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i, ret; 1066d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1067d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1068d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip) 1069d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1070d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1071d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Suspending...\n"); 1072d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1073d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < chip->num_slots;i++) { 1074d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip->hosts[i]) 1075d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman continue; 1076d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = mmc_suspend_host(chip->hosts[i]->mmc, state); 1077d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) { 1078d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i--;i >= 0;i--) 1079d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_resume_host(chip->hosts[i]->mmc); 1080d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1081d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1082d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1083d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1084d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_save_state(pdev); 1085d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); 1086a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 1087a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman for (i = 0;i < chip->num_slots;i++) { 1088a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman if (!chip->hosts[i]) 1089a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman continue; 1090a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman free_irq(chip->hosts[i]->irq, chip->hosts[i]); 1091a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman } 1092a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 1093d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_disable_device(pdev); 1094d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_power_state(pdev, pci_choose_state(pdev, state)); 1095d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1096d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1097d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1098d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1099d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int sdhci_resume (struct pci_dev *pdev) 1100d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1101d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1102d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i, ret; 1103d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1104d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1105d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip) 1106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1107d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1108d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Resuming...\n"); 1109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1110d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_power_state(pdev, PCI_D0); 1111d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_restore_state(pdev); 1112df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman ret = pci_enable_device(pdev); 1113df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman if (ret) 1114df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman return ret; 1115d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1116d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < chip->num_slots;i++) { 1117d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip->hosts[i]) 1118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman continue; 1119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (chip->hosts[i]->flags & SDHCI_USE_DMA) 1120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_master(pdev); 1121a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman ret = request_irq(chip->hosts[i]->irq, sdhci_irq, 1122a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman IRQF_SHARED, chip->hosts[i]->slot_descr, 1123a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman chip->hosts[i]); 1124a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman if (ret) 1125a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman return ret; 1126d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_init(chip->hosts[i]); 11275f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = mmc_resume_host(chip->hosts[i]->mmc); 1129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#else /* CONFIG_PM */ 1137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1138d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define sdhci_suspend NULL 1139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define sdhci_resume NULL 1140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif /* CONFIG_PM */ 1142d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1143d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1144d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1145d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Device probing/removal * 1146d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1147d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1148d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1149d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) 1150d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1151d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int ret; 11524a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman unsigned int version; 1153d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1154d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 1155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1156d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1157d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 first_bar; 1158d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned int caps; 1159d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!chip); 1162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1163d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); 1164d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1165d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1166d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1167d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; 1168d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1169d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (first_bar > 5) { 1170d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n"); 1171d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENODEV; 1172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1174d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(pci_resource_flags(pdev, first_bar + slot) & IORESOURCE_MEM)) { 1175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR DRIVER_NAME ": BAR is not iomem. Aborting.\n"); 1176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENODEV; 1177d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1178d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1179d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (pci_resource_len(pdev, first_bar + slot) != 0x100) { 1180a98087cf81e91999a91ceedb2d2e3a95827c651fPierre Ossman printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. " 1181a98087cf81e91999a91ceedb2d2e3a95827c651fPierre Ossman "You may experience problems.\n"); 1182d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1183d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 11846743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { 11856743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman printk(KERN_ERR DRIVER_NAME ": Vendor specific interface. Aborting.\n"); 11866743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman return -ENODEV; 11876743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman } 11886743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 11896743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { 11906743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman printk(KERN_ERR DRIVER_NAME ": Unknown interface. Aborting.\n"); 11916743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman return -ENODEV; 11926743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman } 11936743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 1194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc = mmc_alloc_host(sizeof(struct sdhci_host), &pdev->dev); 1195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!mmc) 1196d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENOMEM; 1197d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1198d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1199d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mmc = mmc; 1200d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12018a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman host->chip = chip; 12028a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman chip->hosts[slot] = host; 12038a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 1204d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->bar = first_bar + slot; 1205d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1206d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->addr = pci_resource_start(pdev, host->bar); 1207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->irq = pdev->irq; 1208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1209d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq); 1210d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1211d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman snprintf(host->slot_descr, 20, "sdhci:slot%d", slot); 1212d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1213d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_request_region(pdev, host->bar, host->slot_descr); 1214d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1215d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto free; 1216d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr = ioremap_nocache(host->addr, 1218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_resource_len(pdev, host->bar)); 1219d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->ioaddr) { 1220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = -ENOMEM; 1221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto release; 1222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1224d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 1225d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman 12264a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman version = readw(host->ioaddr + SDHCI_HOST_VERSION); 12274a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman version = (version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT; 12284a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman if (version != 0) { 12294a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman printk(KERN_ERR "%s: Unknown controller version (%d). " 12308b1b21853bab15fe5b60b8222786fe036c4dc365Pierre Ossman "You may experience problems.\n", host->slot_descr, 12314a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman version); 12324a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman } 12334a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman 1234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman caps = readl(host->ioaddr + SDHCI_CAPABILITIES); 1235d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12366743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman if (debug_nodma) 12376743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("DMA forced off\n"); 12386743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else if (debug_forcedma) { 12396743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("DMA forced on\n"); 12406743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman host->flags |= SDHCI_USE_DMA; 124198608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman } else if (chip->quirks & SDHCI_QUIRK_FORCE_DMA) 124298608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman host->flags |= SDHCI_USE_DMA; 124398608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman else if ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) 12446743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("Controller doesn't have DMA interface\n"); 12456743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else if (!(caps & SDHCI_CAN_DO_DMA)) 12466743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("Controller doesn't have DMA capability\n"); 12476743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else 1248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->flags |= SDHCI_USE_DMA; 1249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1250d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) { 1251d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { 1252d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_WARNING "%s: No suitable DMA available. " 1253d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman "Falling back to PIO.\n", host->slot_descr); 1254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->flags &= ~SDHCI_USE_DMA; 1255d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1257d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1258d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) 1259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_master(pdev); 1260d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else /* XXX: Hack to get MMC layer to avoid highmem */ 1261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pdev->dma_mask = 0; 1262d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12638ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman host->max_clk = 12648ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; 12658ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman if (host->max_clk == 0) { 12668ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman printk(KERN_ERR "%s: Hardware doesn't specify base clock " 12678ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman "frequency.\n", host->slot_descr); 12688ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman ret = -ENODEV; 12698ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto unmap; 12708ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman } 1271d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->max_clk *= 1000000; 1272d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12731c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman host->timeout_clk = 12741c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; 12751c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (host->timeout_clk == 0) { 12761c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman printk(KERN_ERR "%s: Hardware doesn't specify timeout clock " 12771c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman "frequency.\n", host->slot_descr); 12781c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman ret = -ENODEV; 12791c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman goto unmap; 12801c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 12811c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (caps & SDHCI_TIMEOUT_CLK_UNIT) 12821c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman host->timeout_clk *= 1000; 1283d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1284d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1285d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Set host parameters. 1286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->ops = &sdhci_ops; 1288d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->f_min = host->max_clk / 256; 1289d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->f_max = host->max_clk; 129042431acbac43eb47c774c29d370f5c59136805bfRussell King mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK; 1291d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1292cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman if (caps & SDHCI_CAN_DO_HISPD) 1293cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman mmc->caps |= MMC_CAP_SD_HIGHSPEED; 1294cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1295146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail = 0; 1296146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (caps & SDHCI_CAN_VDD_330) 1297146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34; 1298c70840e819acdbab96b8cdf71d27cb68c6567efaPierre Ossman if (caps & SDHCI_CAN_VDD_300) 1299146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31; 1300c70840e819acdbab96b8cdf71d27cb68c6567efaPierre Ossman if (caps & SDHCI_CAN_VDD_180) 130155556da01284af8c2174b786b3eca8e11301b656Philip Langdale mmc->ocr_avail |= MMC_VDD_165_195; 1302146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1303146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (mmc->ocr_avail == 0) { 1304146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman printk(KERN_ERR "%s: Hardware doesn't report any " 1305146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman "support voltages.\n", host->slot_descr); 1306146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman ret = -ENODEV; 1307146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman goto unmap; 1308146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 1309146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1310d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_init(&host->lock); 1311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1312d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1313d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum number of segments. Hardware cannot do scatter lists. 1314d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1315d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) 1316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->max_hw_segs = 1; 1317d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->max_hw_segs = 16; 1319d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->max_phys_segs = 16; 1320d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1321d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1322bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman * Maximum number of sectors in one transfer. Limited by DMA boundary 132355db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * size (512KiB). 1324d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 132555db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_req_size = 524288; 1326d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1327d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1328d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum segment size. Could be one segment with the maximum number 132955db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * of bytes. 1330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 133155db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_seg_size = mmc->max_req_size; 1332d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1333d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1334fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * Maximum block size. This varies from controller to controller and 1335fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * is specified in the capabilities register. 1336fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman */ 1337fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT; 1338fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman if (mmc->max_blk_size >= 3) { 1339fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman printk(KERN_ERR "%s: Invalid maximum block size.\n", 1340fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman host->slot_descr); 1341fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman ret = -ENODEV; 1342fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman goto unmap; 1343fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman } 1344fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman mmc->max_blk_size = 512 << mmc->max_blk_size; 1345fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman 1346fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman /* 134755db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * Maximum block count. 134855db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman */ 134955db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_blk_count = 65535; 135055db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman 135155db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman /* 1352d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Init tasklets. 1353d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1354d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->card_tasklet, 1355d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_card, (unsigned long)host); 1356d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->finish_tasklet, 1357d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_finish, (unsigned long)host); 1358d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1359e4cad1b5a4851c90c1bcf460062074a2fa10815bAl Viro setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); 1360d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1361dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 1362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->slot_descr, host); 1363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 13648ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto untasklet; 1365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_init(host); 1367d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1368d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_MMC_DEBUG 1369d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1370d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif 1371d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 13725f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 13735f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman 1374d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_add_host(mmc); 1375d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1376d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n", mmc_hostname(mmc), 1377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->addr, host->irq, 1378d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (host->flags & SDHCI_USE_DMA)?"DMA":"PIO"); 1379d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1380d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1381d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 13828ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanuntasklet: 1383d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 1384d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 13858ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanunmap: 1386d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman iounmap(host->ioaddr); 1387d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanrelease: 1388d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_release_region(pdev, host->bar); 1389d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanfree: 1390d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_free_host(mmc); 1391d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1392d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1393d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1394d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1395d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_remove_slot(struct pci_dev *pdev, int slot) 1396d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1397d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1398d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 1399d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1400d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1401d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1402d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = chip->hosts[slot]; 1403d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc = host->mmc; 1404d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1405d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip->hosts[slot] = NULL; 1406d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1407d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_remove_host(mmc); 1408d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1409d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 1410d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1411d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman free_irq(host->irq, host); 1412d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1413d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer_sync(&host->timer); 1414d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1415d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 1416d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 1417d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1418d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman iounmap(host->ioaddr); 1419d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1420d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_release_region(pdev, host->bar); 1421d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1422d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_free_host(mmc); 1423d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1424d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1425d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __devinit sdhci_probe(struct pci_dev *pdev, 1426d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman const struct pci_device_id *ent) 1427d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1428d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int ret, i; 142951f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman u8 slots, rev; 1430d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1431d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1432d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(pdev == NULL); 1433d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(ent == NULL); 1434d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 143551f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev); 143651f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman 143751f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman printk(KERN_INFO DRIVER_NAME 143851f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n", 143951f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman pci_name(pdev), (int)pdev->vendor, (int)pdev->device, 144051f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman (int)rev); 1441d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1442d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); 1443d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1444d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1445d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1446d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman slots = PCI_SLOT_INFO_SLOTS(slots) + 1; 1447d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("found %d slot(s)\n", slots); 1448d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (slots == 0) 1449d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENODEV; 1450d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1451d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_enable_device(pdev); 1452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1453d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1454d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1455d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = kzalloc(sizeof(struct sdhci_chip) + 1456d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sizeof(struct sdhci_host*) * slots, GFP_KERNEL); 1457d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip) { 1458d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = -ENOMEM; 1459d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto err; 1460d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1461d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1462d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip->pdev = pdev; 1463df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman chip->quirks = ent->driver_data; 1464df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman 1465df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman if (debug_quirks) 1466df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman chip->quirks = debug_quirks; 1467d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1468d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip->num_slots = slots; 1469d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_drvdata(pdev, chip); 1470d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1471d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < slots;i++) { 1472d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = sdhci_probe_slot(pdev, i); 1473d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) { 1474d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i--;i >= 0;i--) 1475d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_remove_slot(pdev, i); 1476d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto free; 1477d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1478d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1479d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1480d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1481d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1482d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanfree: 1483d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_drvdata(pdev, NULL); 1484d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman kfree(chip); 1485d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1486d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanerr: 1487d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_disable_device(pdev); 1488d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1489d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1490d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1491d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __devexit sdhci_remove(struct pci_dev *pdev) 1492d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1493d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 1494d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1495d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1496d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1497d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1498d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (chip) { 1499d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < chip->num_slots;i++) 1500d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_remove_slot(pdev, i); 1501d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1502d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_drvdata(pdev, NULL); 1503d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1504d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman kfree(chip); 1505d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1506d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1507d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_disable_device(pdev); 1508d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1509d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1510d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic struct pci_driver sdhci_driver = { 1511d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .name = DRIVER_NAME, 1512d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .id_table = pci_ids, 1513d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .probe = sdhci_probe, 1514d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .remove = __devexit_p(sdhci_remove), 1515d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .suspend = sdhci_suspend, 1516d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .resume = sdhci_resume, 1517d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 1518d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1519d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1520d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1521d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Driver init/exit * 1522d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1523d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1524d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1525d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __init sdhci_drv_init(void) 1526d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1527d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME 152852fbf9c976b36654e08e94c3107ddbaac7e2da33Pierre Ossman ": Secure Digital Host Controller Interface driver\n"); 1529d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); 1530d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1531d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return pci_register_driver(&sdhci_driver); 1532d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1533d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1534d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __exit sdhci_drv_exit(void) 1535d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1536d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Exiting\n"); 1537d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1538d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_unregister_driver(&sdhci_driver); 1539d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1540d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1541d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_init(sdhci_drv_init); 1542d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_exit(sdhci_drv_exit); 1543d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15446743527441430586aa82a0dee1b2700a2a974ebcPierre Ossmanmodule_param(debug_nodma, uint, 0444); 15456743527441430586aa82a0dee1b2700a2a974ebcPierre Ossmanmodule_param(debug_forcedma, uint, 0444); 1546df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanmodule_param(debug_quirks, uint, 0444); 15476743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 1548d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>"); 1549d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_DESCRIPTION("Secure Digital Host Controller Interface driver"); 1550d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_LICENSE("GPL"); 15516743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 15526743527441430586aa82a0dee1b2700a2a974ebcPierre OssmanMODULE_PARM_DESC(debug_nodma, "Forcefully disable DMA transfers. (default 0)"); 15536743527441430586aa82a0dee1b2700a2a974ebcPierre OssmanMODULE_PARM_DESC(debug_forcedma, "Forcefully enable DMA transfers. (default 0)"); 1554df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre OssmanMODULE_PARM_DESC(debug_quirks, "Force certain quirks."); 1555