sdhci.c revision e538fbe83e374a3521128c1f4642aca037661c9d
1d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/* 270f10482c668301c483acded13bf68780ad352b9Pierre Ossman * linux/drivers/mmc/host/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) 37b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) 38645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 39d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic const struct pci_device_id pci_ids[] __devinitdata = { 40645289dca5021224279e67b4655796cafdfdad00Pierre Ossman { 41645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .vendor = PCI_VENDOR_ID_RICOH, 42645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .device = PCI_DEVICE_ID_RICOH_R5C822, 43645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .subvendor = PCI_VENDOR_ID_IBM, 44645289dca5021224279e67b4655796cafdfdad00Pierre Ossman .subdevice = PCI_ANY_ID, 4598608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET | 4698608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman SDHCI_QUIRK_FORCE_DMA, 4798608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman }, 4898608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman 4998608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman { 5098608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .vendor = PCI_VENDOR_ID_RICOH, 5198608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .device = PCI_DEVICE_ID_RICOH_R5C822, 5298608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subvendor = PCI_ANY_ID, 5398608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subdevice = PCI_ANY_ID, 548a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman .driver_data = SDHCI_QUIRK_FORCE_DMA | 558a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman SDHCI_QUIRK_NO_CARD_NO_RESET, 5698608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman }, 5798608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman 5898608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman { 5998608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .vendor = PCI_VENDOR_ID_TI, 6098608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .device = PCI_DEVICE_ID_TI_XX21_XX11_SD, 6198608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subvendor = PCI_ANY_ID, 6298608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .subdevice = PCI_ANY_ID, 6398608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman .driver_data = SDHCI_QUIRK_FORCE_DMA, 64645289dca5021224279e67b4655796cafdfdad00Pierre Ossman }, 65645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 669e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt { 679e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .vendor = PCI_VENDOR_ID_ENE, 689e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .device = PCI_DEVICE_ID_ENE_CB712_SD, 699e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .subvendor = PCI_ANY_ID, 709e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .subdevice = PCI_ANY_ID, 719e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, 729e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt }, 739e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 747de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov { 757de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .vendor = PCI_VENDOR_ID_ENE, 767de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .device = PCI_DEVICE_ID_ENE_CB712_SD_2, 777de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .subvendor = PCI_ANY_ID, 787de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .subdevice = PCI_ANY_ID, 797de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, 807de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov }, 817de064ebc67d9baf6c933d3a7046feb9b4eced05Milko Krachounov 82b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo { 83b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .vendor = PCI_VENDOR_ID_ENE, 84b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .device = PCI_DEVICE_ID_ENE_CB714_SD, 85b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .subvendor = PCI_ANY_ID, 86b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .subdevice = PCI_ANY_ID, 87b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | 88b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, 89b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo }, 90b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 91b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo { 92b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .vendor = PCI_VENDOR_ID_ENE, 93b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .device = PCI_DEVICE_ID_ENE_CB714_SD_2, 94b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .subvendor = PCI_ANY_ID, 95b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .subdevice = PCI_ANY_ID, 96b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | 97b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, 98b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo }, 99b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 100645289dca5021224279e67b4655796cafdfdad00Pierre Ossman { /* Generic SD host controller */ 101645289dca5021224279e67b4655796cafdfdad00Pierre Ossman PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) 102645289dca5021224279e67b4655796cafdfdad00Pierre Ossman }, 103645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 104d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman { /* end: all zeroes */ }, 105d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 107d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_DEVICE_TABLE(pci, pci_ids); 108d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *); 110d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *); 111d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 112d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *, struct mmc_command *); 113d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *); 114d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 115d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_dumpregs(struct sdhci_host *host) 116d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 117d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n"); 118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", 120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_DMA_ADDRESS), 121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_HOST_VERSION)); 122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", 123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_BLOCK_SIZE), 124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_BLOCK_COUNT)); 125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", 126d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_ARGUMENT), 127d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_TRANSFER_MODE)); 128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", 129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_PRESENT_STATE), 130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_HOST_CONTROL)); 131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", 132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_POWER_CONTROL), 133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL)); 134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", 135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_WALK_UP_CONTROL), 136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_CLOCK_CONTROL)); 137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", 138d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL), 139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_INT_STATUS)); 140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", 141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_INT_ENABLE), 142d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_SIGNAL_ENABLE)); 143d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", 144d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_ACMD12_ERR), 145d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readw(host->ioaddr + SDHCI_SLOT_INT_STATUS)); 146d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x | Max curr: 0x%08x\n", 147d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_CAPABILITIES), 148d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readl(host->ioaddr + SDHCI_MAX_CURRENT)); 149d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 150d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n"); 151d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 152d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 153d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 154d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Low level functions * 156d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 157d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 158d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 159d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_reset(struct sdhci_host *host, u8 mask) 160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 161e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman unsigned long timeout; 162e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 1638a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman if (host->chip->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { 1648a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & 1658a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman SDHCI_CARD_PRESENT)) 1668a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman return; 1678a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman } 1688a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 169d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(mask, host->ioaddr + SDHCI_SOFTWARE_RESET); 170d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 171e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (mask & SDHCI_RESET_ALL) 172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = 0; 173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 174e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* Wait max 100 ms */ 175e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout = 100; 176e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 177e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* hw clears the bit when it's done */ 178e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman while (readb(host->ioaddr + SDHCI_SOFTWARE_RESET) & mask) { 179e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (timeout == 0) { 180acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Reset 0x%x never completed.\n", 181e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mmc_hostname(host->mmc), (int)mask); 182e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman sdhci_dumpregs(host); 183e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman return; 184e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman } 185e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout--; 186e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mdelay(1); 187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 188d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_init(struct sdhci_host *host) 191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 192d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u32 intmask; 193d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1963192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman intmask = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | 1973192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | 1983192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | 1993192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT | 200a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | 2013192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE; 202d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask, host->ioaddr + SDHCI_INT_ENABLE); 204d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE); 205d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 206d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_activate_led(struct sdhci_host *host) 208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 209d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 210d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 211d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL); 212d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_LED; 213d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); 214d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 215d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 216d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_deactivate_led(struct sdhci_host *host) 217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 219d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL); 221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_LED; 222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); 223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Core functions * 228d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 230d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2312a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossmanstatic inline char* sdhci_sg_to_buffer(struct sdhci_host* host) 232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2332a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman return page_address(host->cur_sg->page) + host->cur_sg->offset; 234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 235d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 236d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic inline int sdhci_next_sg(struct sdhci_host* host) 237d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 238d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Skip to next SG entry. 240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 241d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cur_sg++; 242d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->num_sg--; 243d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 244d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Any entries left? 246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->num_sg > 0) { 248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->offset = 0; 249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->remain = host->cur_sg->length; 250d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 251d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 252d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return host->num_sg; 253d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 255a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_read_block_pio(struct sdhci_host *host) 256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 257a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int blksize, chunk_remain; 258a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 data; 259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman char *buffer; 260a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int size; 261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 262a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO reading\n"); 263d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 264a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 265a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = 0; 266a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data = 0; 267d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2682a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host) + host->offset; 269d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 270a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 271a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (chunk_remain == 0) { 272a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data = readl(host->ioaddr + SDHCI_BUFFER); 273a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = min(blksize, 4); 274a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 275d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 27614d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov size = min(host->remain, chunk_remain); 277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 278a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain -= size; 279a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize -= size; 280a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman host->offset += size; 281a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman host->remain -= size; 28214d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 283a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (size) { 284a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman *buffer = data & 0xFF; 285a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman buffer++; 286a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data >>= 8; 287a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman size--; 288a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 289d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 290a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->remain == 0) { 291a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (sdhci_next_sg(host) == 0) { 292a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(blksize != 0); 293a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 294a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 2952a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host); 296d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 297a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 298a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 299d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 300a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_write_block_pio(struct sdhci_host *host) 301a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 302a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int blksize, chunk_remain; 303a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 data; 304a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman char *buffer; 305a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman int bytes, size; 306d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 307a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO writing\n"); 308a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 309a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 310a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = 4; 311a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data = 0; 312d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 313a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman bytes = 0; 3142a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host) + host->offset; 315d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 316a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 31714d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov size = min(host->remain, chunk_remain); 318a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 319a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain -= size; 320a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize -= size; 321d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->offset += size; 322d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->remain -= size; 32314d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 324a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (size) { 325a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data >>= 8; 326a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman data |= (u32)*buffer << 24; 327a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman buffer++; 328a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman size--; 329a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 330a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 331a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (chunk_remain == 0) { 332a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman writel(data, host->ioaddr + SDHCI_BUFFER); 333a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman chunk_remain = min(blksize, 4); 334a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 335d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 336d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->remain == 0) { 337d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (sdhci_next_sg(host) == 0) { 338a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(blksize != 0); 339d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 340d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 3412a22b14edfdf1dce303ec48bb934a6a2edb278b5Pierre Ossman buffer = sdhci_sg_to_buffer(host); 342d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 343d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 344a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 345a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 346a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_transfer_pio(struct sdhci_host *host) 347a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 348a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 mask; 349a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 350a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(!host->data); 351a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 35214d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov if (host->num_sg == 0) 353a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 354a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 355a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 356a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_DATA_AVAILABLE; 357a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 358a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_SPACE_AVAILABLE; 359a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 360a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) { 361a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 362a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_read_block_pio(host); 363a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 364a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_write_block_pio(host); 365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 36614d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov if (host->num_sg == 0) 367a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman break; 368a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 369d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 370a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO transfer complete.\n"); 371d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 372d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 373d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) 374d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3751c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman u8 count; 3761c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman unsigned target_timeout, current_timeout; 377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 378d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->data); 379d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 380c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data == NULL) 381d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 382d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 383bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman /* Sanity checks */ 384bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman BUG_ON(data->blksz * data->blocks > 524288); 385fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman BUG_ON(data->blksz > host->mmc->max_blk_size); 3861d676e02970d9e511c9b96101501da90954ee265Pierre Ossman BUG_ON(data->blocks > 65535); 387d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 388e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data = data; 389e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data_early = 0; 390e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 3911c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* timeout in us */ 3921c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman target_timeout = data->timeout_ns / 1000 + 3931c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman data->timeout_clks / host->clock; 394d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3951c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* 3961c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * Figure out needed cycles. 3971c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * We do this in steps in order to fit inside a 32 bit int. 3981c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * The first step is the minimum timeout, which will have a 3991c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * minimum resolution of 6 bits: 4001c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) 2^13*1000 > 2^22, 4011c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (2) host->timeout_clk < 2^16 4021c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * => 4031c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) / (2) > 2^6 4041c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman */ 4051c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0; 4061c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout = (1 << 13) * 1000 / host->timeout_clk; 4071c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman while (current_timeout < target_timeout) { 4081c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count++; 4091c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout <<= 1; 4101c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) 4111c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman break; 4121c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 4131c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 4141c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) { 4151c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman printk(KERN_WARNING "%s: Too large timeout requested!\n", 4161c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman mmc_hostname(host->mmc)); 4171c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0xE; 4181c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 4191c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 4201c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman writeb(count, host->ioaddr + SDHCI_TIMEOUT_CONTROL); 421d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 422d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) { 423d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int count; 424d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 425d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman count = pci_map_sg(host->chip->pdev, data->sg, data->sg_len, 426d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE); 427d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(count != 1); 428d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 429d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS); 430d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 431d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cur_sg = data->sg; 432d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->num_sg = data->sg_len; 433d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 434d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->offset = 0; 435d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->remain = host->cur_sg->length; 436d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 437c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 438bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman /* We do not handle DMA boundaries, so set it to max (512 KiB) */ 439bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman writew(SDHCI_MAKE_BLKSZ(7, data->blksz), 440bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman host->ioaddr + SDHCI_BLOCK_SIZE); 441c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman writew(data->blocks, host->ioaddr + SDHCI_BLOCK_COUNT); 442c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman} 443c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 444c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossmanstatic void sdhci_set_transfer_mode(struct sdhci_host *host, 445c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman struct mmc_data *data) 446c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman{ 447c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman u16 mode; 448c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 449c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data == NULL) 450c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman return; 451c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 452e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman WARN_ON(!host->data); 453e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 454c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode = SDHCI_TRNS_BLK_CNT_EN; 455c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->blocks > 1) 456c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_MULTI; 457c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->flags & MMC_DATA_READ) 458c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_READ; 459c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (host->flags & SDHCI_USE_DMA) 460c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_DMA; 461c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 462c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman writew(mode, host->ioaddr + SDHCI_TRANSFER_MODE); 463d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 464d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 465d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *host) 466d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 467d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_data *data; 468d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u16 blocks; 469d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 470d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!host->data); 471d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 472d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data = host->data; 473d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 474d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 475d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) { 476d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_unmap_sg(host->chip->pdev, data->sg, data->sg_len, 477d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE); 478d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 479d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 480d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 481d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Controller doesn't count down when in single block mode. 482d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 4832b061973404802fb87db93175b856ee0dfbe38e4Pierre Ossman if (data->blocks == 1) 4842b061973404802fb87db93175b856ee0dfbe38e4Pierre Ossman blocks = (data->error == MMC_ERR_NONE) ? 0 : 1; 485d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 486d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT); 487a3fd4a1b9ced850ac1a9d5bb9f8fab494d07f3faRussell King data->bytes_xfered = data->blksz * (data->blocks - blocks); 488d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 489d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((data->error == MMC_ERR_NONE) && blocks) { 490d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Controller signalled completion even " 491acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "though there were blocks left.\n", 492acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman mmc_hostname(host->mmc)); 493d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data->error = MMC_ERR_FAILED; 494d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 495d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 496d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (data->stop) { 497d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 498d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 499d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 500d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 501d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (data->error != MMC_ERR_NONE) { 502d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 503d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 504d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 505d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 506d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, data->stop); 507d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 508d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 509d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 510d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 511d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 512d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 513d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int flags; 514fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman u32 mask; 5157cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 516d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 517d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->cmd); 518d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 519d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 5207cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 521fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 522fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask = SDHCI_CMD_INHIBIT; 523fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) 524fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask |= SDHCI_DATA_INHIBIT; 525fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 526fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman /* We shouldn't wait for data inihibit for stop commands, even 527fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman though they might use busy signaling */ 528fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if (host->mrq->data && (cmd == host->mrq->data->stop)) 529fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask &= ~SDHCI_DATA_INHIBIT; 530fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 531fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) { 5327cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 533d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Controller never released " 534acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "inhibit bit(s).\n", mmc_hostname(host->mmc)); 535d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 536d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman cmd->error = MMC_ERR_FAILED; 537d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 538d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 539d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 5407cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 5417cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 5427cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 543d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 544d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mod_timer(&host->timer, jiffies + 10 * HZ); 545d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 546d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = cmd; 547d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 548d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_prepare_data(host, cmd->data); 549d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 550d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(cmd->arg, host->ioaddr + SDHCI_ARGUMENT); 551d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 552c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman sdhci_set_transfer_mode(host, cmd->data); 553c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 554d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { 555acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unsupported response type!\n", 556d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 557d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman cmd->error = MMC_ERR_INVALID; 558d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 559d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 560d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 561d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 562d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(cmd->flags & MMC_RSP_PRESENT)) 563d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_NONE; 564d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_136) 565d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_LONG; 566d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_BUSY) 567d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT_BUSY; 568d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 569d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT; 570d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 571d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_CRC) 572d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_CRC; 573d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_OPCODE) 574d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_INDEX; 575d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->data) 576d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_DATA; 577d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 578fb61e2895170920564410baadf71c5b3561dbf42Pierre Ossman writew(SDHCI_MAKE_CMD(cmd->opcode, flags), 579d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr + SDHCI_COMMAND); 580d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 581d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 582d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *host) 583d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 584d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 585d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 586d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(host->cmd == NULL); 587d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 588d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_PRESENT) { 589d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_136) { 590d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* CRC is stripped so we need to do some shifting. */ 591d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < 4;i++) { 592d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] = readl(host->ioaddr + 593d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4) << 8; 594d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (i != 3) 595d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] |= 596d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman readb(host->ioaddr + 597d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4-1); 598d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 599d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 600d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[0] = readl(host->ioaddr + SDHCI_RESPONSE); 601d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 602d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 603d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 604d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_NONE; 605d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 606e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->data && host->data_early) 607e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 608e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 609e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (!host->cmd->data) 610d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 611d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 612d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 613d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 614d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 615d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) 616d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 617d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int div; 618d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u16 clk; 6197cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 620d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 621d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == host->clock) 622d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 623d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 624d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL); 625d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 626d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == 0) 627d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 628d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 629d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (div = 1;div < 256;div *= 2) { 630d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((host->max_clk / div) <= clock) 631d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman break; 632d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 633d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman div >>= 1; 634d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 635d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk = div << SDHCI_DIVIDER_SHIFT; 636d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_INT_EN; 637d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); 638d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 639d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 6407cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 6417cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL)) 6427cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman & SDHCI_CLOCK_INT_STABLE)) { 6437cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 644acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Internal clock never " 645acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "stabilised.\n", mmc_hostname(host->mmc)); 646d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 647d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 648d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 6497cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 6507cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 6517cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 652d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 653d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_CARD_EN; 654d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); 655d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 656d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 657d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = clock; 658d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 659d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 660146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossmanstatic void sdhci_set_power(struct sdhci_host *host, unsigned short power) 661146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman{ 662146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman u8 pwr; 663146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 664146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (host->power == power) 665146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman return; 666146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 6679e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt if (power == (unsigned short)-1) { 6689e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); 669146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman goto out; 6709e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt } 6719e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 6729e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt /* 6739e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * Spec says that we should clear the power reg before setting 6749e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * a new value. Some controllers don't seem to like this though. 6759e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt */ 6769e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) 6779e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); 678146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 679146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr = SDHCI_POWER_ON; 680146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 6814be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale switch (1 << power) { 68255556da01284af8c2174b786b3eca8e11301b656Philip Langdale case MMC_VDD_165_195: 683146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr |= SDHCI_POWER_180; 684146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman break; 6854be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_29_30: 6864be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_30_31: 687146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr |= SDHCI_POWER_300; 688146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman break; 6894be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_32_33: 6904be34c99a2f3aa90fa42e62c0918f07afb8a645bPhilip Langdale case MMC_VDD_33_34: 691146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman pwr |= SDHCI_POWER_330; 692146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman break; 693146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman default: 694146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman BUG(); 695146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 696146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 697146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL); 698146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 699146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossmanout: 700146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman host->power = power; 701146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman} 702146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 703d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 704d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 705d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * MMC callbacks * 706d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 707d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 708d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 709d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) 710d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 711d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 712d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 713d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 714d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 715d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 716d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 717d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 718d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->mrq != NULL); 719d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 720d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_activate_led(host); 721d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 722d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = mrq; 723d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 724d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { 725d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq->cmd->error = MMC_ERR_TIMEOUT; 726d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 727d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 728d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, mrq->cmd); 729d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 7305f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 731d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 732d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 733d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 734d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 735d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 736d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 737d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 738d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 739d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 740d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 741d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 742d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 743d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 744d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 745d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Reset the chip on each power off. 746d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Should clear out any weird states. 747d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 748d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) { 749d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(0, host->ioaddr + SDHCI_SIGNAL_ENABLE); 750d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_init(host); 751d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 752d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 753d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_set_clock(host, ios->clock); 754d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 755d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) 756146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, -1); 757d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 758146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman sdhci_set_power(host, ios->vdd); 759d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 760d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL); 761cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 762d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->bus_width == MMC_BUS_WIDTH_4) 763d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_4BITBUS; 764d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 765d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_4BITBUS; 766cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 767cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman if (ios->timing == MMC_TIMING_SD_HS) 768cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl |= SDHCI_CTRL_HISPD; 769cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman else 770cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl &= ~SDHCI_CTRL_HISPD; 771cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 772d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); 773d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 774b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo /* 775b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * Some (ENE) controllers go apeshit on some ios operation, 776b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * signalling timeout and CRC errors even on CMD0. Resetting 777b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * it on each ios seems to solve the problem. 778b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo */ 779b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo if(host->chip->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) 780b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 781b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 7825f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 783d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 784d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 785d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 786d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int sdhci_get_ro(struct mmc_host *mmc) 787d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 788d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 789d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 790d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int present; 791d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 792d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 793d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 794d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 795d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 796d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman present = readl(host->ioaddr + SDHCI_PRESENT_STATE); 797d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 798d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 799d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 800d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return !(present & SDHCI_WRITE_PROTECT); 801d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 802d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 803ab7aefd0b38297e6d2d71f43e8f81f9f4a36cdaeDavid Brownellstatic const struct mmc_host_ops sdhci_ops = { 804d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .request = sdhci_request, 805d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .set_ios = sdhci_set_ios, 806d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .get_ro = sdhci_get_ro, 807d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 808d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 809d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 810d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 811d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Tasklets * 812d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 813d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 814d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 815d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_card(unsigned long param) 816d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 817d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 818d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 819d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 820d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 821d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 822d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 823d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 824d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { 825d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 826d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Card removed during transfer!\n", 827d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 828d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Resetting controller.\n", 829d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 830d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 831d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 832d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 833d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 834d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq->cmd->error = MMC_ERR_FAILED; 835d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 836d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 837d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 838d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 839d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 840d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 841d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_detect_change(host->mmc, msecs_to_jiffies(500)); 842d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 843d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 844d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_finish(unsigned long param) 845d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 846d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 847d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 848d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_request *mrq; 849d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 850d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 851d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 852d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 853d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 854d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer(&host->timer); 855d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 856d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mrq = host->mrq; 857d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 858d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 859d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 860d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 861d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 862d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((mrq->cmd->error != MMC_ERR_NONE) || 863d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (mrq->data && ((mrq->data->error != MMC_ERR_NONE) || 864d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) { 865645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 866645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Some controllers need this kick or reset won't work here */ 867645289dca5021224279e67b4655796cafdfdad00Pierre Ossman if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { 868645289dca5021224279e67b4655796cafdfdad00Pierre Ossman unsigned int clock; 869645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 870645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* This is to force an update */ 871645289dca5021224279e67b4655796cafdfdad00Pierre Ossman clock = host->clock; 872645289dca5021224279e67b4655796cafdfdad00Pierre Ossman host->clock = 0; 873645289dca5021224279e67b4655796cafdfdad00Pierre Ossman sdhci_set_clock(host, clock); 874645289dca5021224279e67b4655796cafdfdad00Pierre Ossman } 875645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 876645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Spec says we should do both at the same time, but Ricoh 877645289dca5021224279e67b4655796cafdfdad00Pierre Ossman controllers do not like that. */ 878d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 879d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 880d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 881d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 882d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = NULL; 883d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 884d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 885d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 886d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_deactivate_led(host); 887d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 8885f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 889d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 890d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 891d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_request_done(host->mmc, mrq); 892d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 893d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 894d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_timeout_timer(unsigned long data) 895d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 896d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 897d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 898d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 899d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)data; 900d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 901d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 902d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 903d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 904acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Timeout waiting for hardware " 905acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "interrupt.\n", mmc_hostname(host->mmc)); 906d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 907d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 908d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data) { 909d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_TIMEOUT; 910d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 911d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 912d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd) 913d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->error = MMC_ERR_TIMEOUT; 914d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 915d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq->cmd->error = MMC_ERR_TIMEOUT; 916d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 917d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 918d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 919d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 920d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9215f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 922d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 923d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 924d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 925d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 926d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Interrupt handling * 928d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 930d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 931d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) 932d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 933d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 934d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 935d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->cmd) { 936d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Got command interrupt even though no " 937d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman "command operation was in progress.\n", 938d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 939d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 940d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 941d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 942d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 94343b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman if (intmask & SDHCI_INT_TIMEOUT) 94443b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman host->cmd->error = MMC_ERR_TIMEOUT; 94543b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman else if (intmask & SDHCI_INT_CRC) 94643b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman host->cmd->error = MMC_ERR_BADCRC; 94743b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX)) 94843b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman host->cmd->error = MMC_ERR_FAILED; 94943b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman 95043b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman if (host->cmd->error != MMC_ERR_NONE) 951d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 95243b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman else if (intmask & SDHCI_INT_RESPONSE) 95343b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman sdhci_finish_command(host); 954d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 955d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 956d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 957d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 958d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 959d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 960d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->data) { 961d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 962d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * A data end interrupt is sent together with the response 963d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * for the stop command. 964d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 965d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_END) 966d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 967d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 968d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR "%s: Got data interrupt even though no " 969d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman "data operation was in progress.\n", 970d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 971d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 972d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 973d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 974d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 975d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 976d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_TIMEOUT) 977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_TIMEOUT; 978d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (intmask & SDHCI_INT_DATA_CRC) 979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_BADCRC; 980d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (intmask & SDHCI_INT_DATA_END_BIT) 981d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data->error = MMC_ERR_FAILED; 982d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 983d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data->error != MMC_ERR_NONE) 984d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 985d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 986a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 987d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_transfer_pio(host); 988d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 9896ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman /* 9906ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * We currently don't do anything fancy with DMA 9916ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * boundaries, but as we can't disable the feature 9926ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * we need to at least restart the transfer. 9936ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman */ 9946ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman if (intmask & SDHCI_INT_DMA_END) 9956ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman writel(readl(host->ioaddr + SDHCI_DMA_ADDRESS), 9966ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman host->ioaddr + SDHCI_DMA_ADDRESS); 9976ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman 998e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 999e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->cmd) { 1000e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman /* 1001e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * Data managed to finish before the 1002e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * command completed. Make sure we do 1003e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * things in the proper order. 1004e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman */ 1005e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data_early = 1; 1006e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } else { 1007e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 1008e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 1009e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 1010d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1011d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1012d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10137d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t sdhci_irq(int irq, void *dev_id) 1014d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1015d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman irqreturn_t result; 1016d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host* host = dev_id; 1017d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u32 intmask; 1018d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1019d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock(&host->lock); 1020d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1021d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask = readl(host->ioaddr + SDHCI_INT_STATUS); 1022d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 102362df67a523acd7a22d936bf946b1889dbd60ca98Mark Lord if (!intmask || intmask == 0xffffffff) { 1024d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_NONE; 1025d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 1026d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1027d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1028d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("*** %s got interrupt: 0x%08x\n", host->slot_descr, intmask); 1029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10303192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 10313192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman writel(intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE), 10323192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman host->ioaddr + SDHCI_INT_STATUS); 1033d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->card_tasklet); 10343192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 1035d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10363192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE); 1037d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10383192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & SDHCI_INT_CMD_MASK) { 1039d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask & SDHCI_INT_CMD_MASK, 1040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr + SDHCI_INT_STATUS); 10413192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK); 1042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1043d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_MASK) { 1045d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask & SDHCI_INT_DATA_MASK, 1046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr + SDHCI_INT_STATUS); 10473192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); 1048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1049d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1050d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK); 1051d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1052964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman intmask &= ~SDHCI_INT_ERROR; 1053964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman 1054d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_BUS_POWER) { 10553192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman printk(KERN_ERR "%s: Card is consuming too much power!\n", 1056d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 10573192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman writel(SDHCI_INT_BUS_POWER, host->ioaddr + SDHCI_INT_STATUS); 1058d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1059d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10609d26a5d3f2b9c4fe4b2ba491683c6989ecd6ae04Rolf Eike Beer intmask &= ~SDHCI_INT_BUS_POWER; 10613192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman 10623192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask) { 1063acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman printk(KERN_ERR "%s: Unexpected interrupt 0x%08x.\n", 10643192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman mmc_hostname(host->mmc), intmask); 1065d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1066d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1067d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman writel(intmask, host->ioaddr + SDHCI_INT_STATUS); 10683192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 1069d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1070d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_HANDLED; 1071d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10725f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1073d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 1074d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock(&host->lock); 1075d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1076d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return result; 1077d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1078d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1079d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1080d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1081d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Suspend/resume * 1082d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1083d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1084d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1085d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_PM 1086d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1087d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int sdhci_suspend (struct pci_dev *pdev, pm_message_t state) 1088d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1089d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1090d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i, ret; 1091d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1092d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1093d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip) 1094d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1095d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1096d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Suspending...\n"); 1097d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1098d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < chip->num_slots;i++) { 1099d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip->hosts[i]) 1100d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman continue; 1101d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = mmc_suspend_host(chip->hosts[i]->mmc, state); 1102d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) { 1103d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i--;i >= 0;i--) 1104d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_resume_host(chip->hosts[i]->mmc); 1105d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1107d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1108d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_save_state(pdev); 1110d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); 1111a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 1112a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman for (i = 0;i < chip->num_slots;i++) { 1113a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman if (!chip->hosts[i]) 1114a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman continue; 1115a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman free_irq(chip->hosts[i]->irq, chip->hosts[i]); 1116a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman } 1117a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman 1118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_disable_device(pdev); 1119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_power_state(pdev, pci_choose_state(pdev, state)); 1120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int sdhci_resume (struct pci_dev *pdev) 1125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1126d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1127d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i, ret; 1128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip) 1131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Resuming...\n"); 1134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_power_state(pdev, PCI_D0); 1136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_restore_state(pdev); 1137df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman ret = pci_enable_device(pdev); 1138df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman if (ret) 1139df1c4b7bf7f3b3a48d78c6e5c2fc5b9a1c01b821Pierre Ossman return ret; 1140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < chip->num_slots;i++) { 1142d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip->hosts[i]) 1143d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman continue; 1144d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (chip->hosts[i]->flags & SDHCI_USE_DMA) 1145d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_master(pdev); 1146a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman ret = request_irq(chip->hosts[i]->irq, sdhci_irq, 1147a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman IRQF_SHARED, chip->hosts[i]->slot_descr, 1148a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman chip->hosts[i]); 1149a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman if (ret) 1150a715dfc7b9ef15ed5b398b185bd84cc015ff37f6Pierre Ossman return ret; 1151d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_init(chip->hosts[i]); 11525f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1153d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = mmc_resume_host(chip->hosts[i]->mmc); 1154d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1155d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1156d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1157d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1158d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1159d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#else /* CONFIG_PM */ 1162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1163d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define sdhci_suspend NULL 1164d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define sdhci_resume NULL 1165d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1166d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif /* CONFIG_PM */ 1167d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1168d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1169d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1170d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Device probing/removal * 1171d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1174d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) 1175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int ret; 11774a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman unsigned int version; 1178d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1179d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 1180d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1181d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1182d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 first_bar; 1183d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned int caps; 1184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1185d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!chip); 1187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1188d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); 1189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1192d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; 1193d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (first_bar > 5) { 1195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n"); 1196d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENODEV; 1197d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1198d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1199d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(pci_resource_flags(pdev, first_bar + slot) & IORESOURCE_MEM)) { 1200d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_ERR DRIVER_NAME ": BAR is not iomem. Aborting.\n"); 1201d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENODEV; 1202d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1204d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (pci_resource_len(pdev, first_bar + slot) != 0x100) { 1205a98087cf81e91999a91ceedb2d2e3a95827c651fPierre Ossman printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. " 1206a98087cf81e91999a91ceedb2d2e3a95827c651fPierre Ossman "You may experience problems.\n"); 1207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12096743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { 12106743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman printk(KERN_ERR DRIVER_NAME ": Vendor specific interface. Aborting.\n"); 12116743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman return -ENODEV; 12126743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman } 12136743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 12146743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { 12156743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman printk(KERN_ERR DRIVER_NAME ": Unknown interface. Aborting.\n"); 12166743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman return -ENODEV; 12176743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman } 12186743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 1219d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc = mmc_alloc_host(sizeof(struct sdhci_host), &pdev->dev); 1220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!mmc) 1221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENOMEM; 1222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mmc = mmc; 1225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12268a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman host->chip = chip; 12278a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman chip->hosts[slot] = host; 12288a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 1229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->bar = first_bar + slot; 1230d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->addr = pci_resource_start(pdev, host->bar); 1232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->irq = pdev->irq; 1233d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq); 1235d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1236d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman snprintf(host->slot_descr, 20, "sdhci:slot%d", slot); 1237d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1238d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_request_region(pdev, host->bar, host->slot_descr); 1239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1240d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto free; 1241d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1242d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->ioaddr = ioremap_nocache(host->addr, 1243d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_resource_len(pdev, host->bar)); 1244d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->ioaddr) { 1245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = -ENOMEM; 1246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto release; 1247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1249d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 1250d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman 12514a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman version = readw(host->ioaddr + SDHCI_HOST_VERSION); 12524a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman version = (version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT; 12534a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman if (version != 0) { 12544a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman printk(KERN_ERR "%s: Unknown controller version (%d). " 12558b1b21853bab15fe5b60b8222786fe036c4dc365Pierre Ossman "You may experience problems.\n", host->slot_descr, 12564a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman version); 12574a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman } 12584a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman 1259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman caps = readl(host->ioaddr + SDHCI_CAPABILITIES); 1260d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12616743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman if (debug_nodma) 12626743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("DMA forced off\n"); 12636743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else if (debug_forcedma) { 12646743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("DMA forced on\n"); 12656743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman host->flags |= SDHCI_USE_DMA; 126698608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman } else if (chip->quirks & SDHCI_QUIRK_FORCE_DMA) 126798608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman host->flags |= SDHCI_USE_DMA; 126898608076a21914ab12f1c858a0cdf55366260f12Pierre Ossman else if ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) 12696743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("Controller doesn't have DMA interface\n"); 12706743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else if (!(caps & SDHCI_CAN_DO_DMA)) 12716743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman DBG("Controller doesn't have DMA capability\n"); 12726743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else 1273d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->flags |= SDHCI_USE_DMA; 1274d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1275d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) { 1276d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { 1277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_WARNING "%s: No suitable DMA available. " 1278d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman "Falling back to PIO.\n", host->slot_descr); 1279d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->flags &= ~SDHCI_USE_DMA; 1280d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1281d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1283d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) 1284d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_master(pdev); 1285d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else /* XXX: Hack to get MMC layer to avoid highmem */ 1286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pdev->dma_mask = 0; 1287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12888ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman host->max_clk = 12898ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; 12908ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman if (host->max_clk == 0) { 12918ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman printk(KERN_ERR "%s: Hardware doesn't specify base clock " 12928ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman "frequency.\n", host->slot_descr); 12938ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman ret = -ENODEV; 12948ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto unmap; 12958ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman } 1296d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->max_clk *= 1000000; 1297d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12981c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman host->timeout_clk = 12991c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; 13001c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (host->timeout_clk == 0) { 13011c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman printk(KERN_ERR "%s: Hardware doesn't specify timeout clock " 13021c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman "frequency.\n", host->slot_descr); 13031c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman ret = -ENODEV; 13041c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman goto unmap; 13051c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 13061c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (caps & SDHCI_TIMEOUT_CLK_UNIT) 13071c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman host->timeout_clk *= 1000; 1308d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1310d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Set host parameters. 1311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1312d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->ops = &sdhci_ops; 1313d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->f_min = host->max_clk / 256; 1314d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->f_max = host->max_clk; 131542431acbac43eb47c774c29d370f5c59136805bfRussell King mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK; 1316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1317cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman if (caps & SDHCI_CAN_DO_HISPD) 1318cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman mmc->caps |= MMC_CAP_SD_HIGHSPEED; 1319cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1320146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail = 0; 1321146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (caps & SDHCI_CAN_VDD_330) 1322146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34; 1323c70840e819acdbab96b8cdf71d27cb68c6567efaPierre Ossman if (caps & SDHCI_CAN_VDD_300) 1324146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31; 1325c70840e819acdbab96b8cdf71d27cb68c6567efaPierre Ossman if (caps & SDHCI_CAN_VDD_180) 132655556da01284af8c2174b786b3eca8e11301b656Philip Langdale mmc->ocr_avail |= MMC_VDD_165_195; 1327146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1328146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (mmc->ocr_avail == 0) { 1329146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman printk(KERN_ERR "%s: Hardware doesn't report any " 1330146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman "support voltages.\n", host->slot_descr); 1331146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman ret = -ENODEV; 1332146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman goto unmap; 1333146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 1334146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1335d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_init(&host->lock); 1336d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1337d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1338d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum number of segments. Hardware cannot do scatter lists. 1339d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1340d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->flags & SDHCI_USE_DMA) 1341d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->max_hw_segs = 1; 1342d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1343d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->max_hw_segs = 16; 1344d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->max_phys_segs = 16; 1345d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1346d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1347bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman * Maximum number of sectors in one transfer. Limited by DMA boundary 134855db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * size (512KiB). 1349d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 135055db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_req_size = 524288; 1351d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1352d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1353d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum segment size. Could be one segment with the maximum number 135455db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * of bytes. 1355d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 135655db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_seg_size = mmc->max_req_size; 1357d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1358d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1359fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * Maximum block size. This varies from controller to controller and 1360fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * is specified in the capabilities register. 1361fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman */ 1362fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT; 1363fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman if (mmc->max_blk_size >= 3) { 136403f8590d90844f04d20488a80e75eaf4c4e0b35cDavid Vrabel printk(KERN_WARNING "%s: Invalid maximum block size, assuming 512\n", 1365fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman host->slot_descr); 136603f8590d90844f04d20488a80e75eaf4c4e0b35cDavid Vrabel mmc->max_blk_size = 512; 136703f8590d90844f04d20488a80e75eaf4c4e0b35cDavid Vrabel } else 136803f8590d90844f04d20488a80e75eaf4c4e0b35cDavid Vrabel mmc->max_blk_size = 512 << mmc->max_blk_size; 1369fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman 1370fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman /* 137155db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * Maximum block count. 137255db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman */ 137355db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_blk_count = 65535; 137455db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman 137555db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman /* 1376d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Init tasklets. 1377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1378d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->card_tasklet, 1379d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_card, (unsigned long)host); 1380d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->finish_tasklet, 1381d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_finish, (unsigned long)host); 1382d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1383e4cad1b5a4851c90c1bcf460062074a2fa10815bAl Viro setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); 1384d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1385dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 1386d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->slot_descr, host); 1387d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 13888ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto untasklet; 1389d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1390d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_init(host); 1391d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1392d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_MMC_DEBUG 1393d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1394d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif 1395d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 13965f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 13975f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman 1398d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_add_host(mmc); 1399d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1400d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n", mmc_hostname(mmc), 1401d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->addr, host->irq, 1402d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman (host->flags & SDHCI_USE_DMA)?"DMA":"PIO"); 1403d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1404d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1405d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14068ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanuntasklet: 1407d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 1408d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 14098ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanunmap: 1410d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman iounmap(host->ioaddr); 1411d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanrelease: 1412d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_release_region(pdev, host->bar); 1413d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanfree: 1414d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_free_host(mmc); 1415d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1416d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1417d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1418d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1419d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_remove_slot(struct pci_dev *pdev, int slot) 1420d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1421d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1422d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 1423d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1424d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1425d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1426d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = chip->hosts[slot]; 1427d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc = host->mmc; 1428d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1429d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip->hosts[slot] = NULL; 1430d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1431d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_remove_host(mmc); 1432d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1433d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 1434d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1435d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman free_irq(host->irq, host); 1436d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1437d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer_sync(&host->timer); 1438d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1439d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 1440d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 1441d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1442d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman iounmap(host->ioaddr); 1443d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1444d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_release_region(pdev, host->bar); 1445d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1446d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_free_host(mmc); 1447d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1448d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1449d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __devinit sdhci_probe(struct pci_dev *pdev, 1450d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman const struct pci_device_id *ent) 1451d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int ret, i; 145351f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman u8 slots, rev; 1454d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1455d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1456d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(pdev == NULL); 1457d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(ent == NULL); 1458d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 145951f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev); 146051f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman 146151f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman printk(KERN_INFO DRIVER_NAME 146251f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n", 146351f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman pci_name(pdev), (int)pdev->vendor, (int)pdev->device, 146451f82bc07a9673d790c2a17de8e3fa8046543f04Pierre Ossman (int)rev); 1465d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1466d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); 1467d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1468d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1469d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1470d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman slots = PCI_SLOT_INFO_SLOTS(slots) + 1; 1471d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("found %d slot(s)\n", slots); 1472d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (slots == 0) 1473d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return -ENODEV; 1474d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1475d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = pci_enable_device(pdev); 1476d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) 1477d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1478d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1479d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = kzalloc(sizeof(struct sdhci_chip) + 1480d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sizeof(struct sdhci_host*) * slots, GFP_KERNEL); 1481d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!chip) { 1482d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = -ENOMEM; 1483d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto err; 1484d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1485d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1486d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip->pdev = pdev; 1487df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman chip->quirks = ent->driver_data; 1488df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman 1489df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman if (debug_quirks) 1490df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossman chip->quirks = debug_quirks; 1491d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1492d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip->num_slots = slots; 1493d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_drvdata(pdev, chip); 1494d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1495d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < slots;i++) { 1496d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ret = sdhci_probe_slot(pdev, i); 1497d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ret) { 1498d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i--;i >= 0;i--) 1499d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_remove_slot(pdev, i); 1500d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto free; 1501d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1502d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1503d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1504d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 1505d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1506d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanfree: 1507d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_drvdata(pdev, NULL); 1508d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman kfree(chip); 1509d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1510d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanerr: 1511d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_disable_device(pdev); 1512d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 1513d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1514d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1515d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __devexit sdhci_remove(struct pci_dev *pdev) 1516d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1517d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 1518d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_chip *chip; 1519d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1520d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman chip = pci_get_drvdata(pdev); 1521d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1522d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (chip) { 1523d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < chip->num_slots;i++) 1524d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_remove_slot(pdev, i); 1525d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1526d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_set_drvdata(pdev, NULL); 1527d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1528d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman kfree(chip); 1529d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1530d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1531d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_disable_device(pdev); 1532d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1533d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1534d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic struct pci_driver sdhci_driver = { 1535d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .name = DRIVER_NAME, 1536d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .id_table = pci_ids, 1537d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .probe = sdhci_probe, 1538d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .remove = __devexit_p(sdhci_remove), 1539d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .suspend = sdhci_suspend, 1540d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman .resume = sdhci_resume, 1541d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman}; 1542d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1543d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1544d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1545d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Driver init/exit * 1546d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1547d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1548d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1549d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __init sdhci_drv_init(void) 1550d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1551d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME 155252fbf9c976b36654e08e94c3107ddbaac7e2da33Pierre Ossman ": Secure Digital Host Controller Interface driver\n"); 1553d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); 1554d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1555d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return pci_register_driver(&sdhci_driver); 1556d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1557d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1558d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __exit sdhci_drv_exit(void) 1559d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1560d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman DBG("Exiting\n"); 1561d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1562d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman pci_unregister_driver(&sdhci_driver); 1563d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1564d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1565d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_init(sdhci_drv_init); 1566d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_exit(sdhci_drv_exit); 1567d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 15686743527441430586aa82a0dee1b2700a2a974ebcPierre Ossmanmodule_param(debug_nodma, uint, 0444); 15696743527441430586aa82a0dee1b2700a2a974ebcPierre Ossmanmodule_param(debug_forcedma, uint, 0444); 1570df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanmodule_param(debug_quirks, uint, 0444); 15716743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 1572d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>"); 1573d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_DESCRIPTION("Secure Digital Host Controller Interface driver"); 1574d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_LICENSE("GPL"); 15756743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 15766743527441430586aa82a0dee1b2700a2a974ebcPierre OssmanMODULE_PARM_DESC(debug_nodma, "Forcefully disable DMA transfers. (default 0)"); 15776743527441430586aa82a0dee1b2700a2a974ebcPierre OssmanMODULE_PARM_DESC(debug_forcedma, "Forcefully enable DMA transfers. (default 0)"); 1578df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre OssmanMODULE_PARM_DESC(debug_quirks, "Force certain quirks."); 1579