mss.zip_mss 2.9

/* * mss_sdhci.c - SD Host Controller interface driver * * Copyright (C) 2007 Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License Version 2 only * for now as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* * derived from linux/drivers/mmc/sdhci.c * Copyright (c) 2005 Pierre Ossman */ #include <linux/delay.h> #include <linux/highmem.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/proc_fs.h> #include <asm/byteorder.h> #include <asm/scatterlist.h> #include <linux/mmc/mss_core.h> #include <linux/mmc/mmc_protocol.h> #include "mss_sdhci.h" #define DRIVER_NAME "sdhci" #define BUGMAIL " " #define DBG(f, x...) \ pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x) static unsigned int debug_nodma = 0; static unsigned int debug_forcedma = 0; static unsigned int debug_quirks = 0; #define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) #define SDHCI_QUIRK_FORCE_DMA (1<<1) /* Controller doesn't like some resets when there is no card inserted. */ #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) static const struct pci_device_id pci_ids[] __devinitdata = { { .vendor = PCI_VENDOR_ID_RICOH, .device = PCI_DEVICE_ID_RICOH_R5C822, .subvendor = PCI_VENDOR_ID_IBM, .subdevice = PCI_ANY_ID, .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET | SDHCI_QUIRK_FORCE_DMA, }, { .vendor = PCI_VENDOR_ID_RICOH, .device = PCI_DEVICE_ID_RICOH_R5C822, .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, .driver_data = SDHCI_QUIRK_FORCE_DMA | SDHCI_QUIRK_NO_CARD_NO_RESET, }, { .vendor = PCI_VENDOR_ID_TI, .device = PCI_DEVICE_ID_TI_XX21_XX11_SD, .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, .driver_data = SDHCI_QUIRK_FORCE_DMA, }, { .vendor = PCI_VENDOR_ID_ENE, .device = PCI_DEVICE_ID_ENE_CB712_SD, .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, }, { /* Generic SD host controller */ PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) }, { /* end: all zeroes */ }, }; MODULE_DEVICE_TABLE(pci, pci_ids); static void sdhci_prepare_data(struct sdhci_host *, struct mss_data *); static void sdhci_finish_data(struct sdhci_host *); static void sdhci_send_command(struct sdhci_host *, struct mss_cmd *); static void sdhci_finish_command(struct sdhci_host *); struct proc_dir_entry *dir_sdhci = NULL; static inline struct sdhci_host* slot_to_host(struct mss_slot *slot) { return (struct sdhci_host*)(slot->private); } static inline struct sdhci_host* mss_to_host(struct mss_host *mss) { return (struct sdhci_host*)(mss->private); } static void sdhci_dumpregs(struct sdhci_host *host) { printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n"); printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", readl(host->ioaddr + SDHCI_DMA_ADDRESS), readw(host->ioaddr + SDHCI_HOST_VERSION)); printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", readw(host->ioaddr + SDHCI_BLOCK_SIZE), readw(host->ioaddr + SDHCI_BLOCK_COUNT)); printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", readl(host->ioaddr + SDHCI_ARGUMENT), readw(host->ioaddr + SDHCI_TRANSFER_MODE)); printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", readl(host->ioaddr + SDHCI_PRESENT_STATE), readb(host->ioaddr + SDHCI_HOST_CONTROL)); printk(KERN_DEBUG DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", readb(host->ioaddr + SDHCI_POWER_CONTROL), readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL)); printk(KERN_DEBUG DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", readb(host->ioaddr + SDHCI_WALK_UP_CONTROL), readw(host->ioaddr + SDHCI_CLOCK_CONTROL)); printk(KERN_DEBUG DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL), readl(host->ioaddr + SDHCI_INT_STATUS)); printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", readl(host->ioaddr + SDHCI_INT_ENABLE), readl(host->ioaddr + SDHCI_SIGNAL_ENABLE)); printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", readw(host->ioaddr + SDHCI_ACMD12_ERR), readw(host->ioaddr + SDHCI_SLOT_INT_STATUS)); printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x | Max curr: 0x%08x\n", readl(host->ioaddr + SDHCI_CAPABILITIES), readl(host->ioaddr + SDHCI_MAX_CURRENT)); printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n"); } #ifdef CONFIG_PROC_FS static int sdhci_read_proc(char* page, char** start, off_t off, int count, int* eof, void* data) { int len = 0; struct sdhci_host *host=(struct sdhci_host *)data; if (host == NULL) goto done; len += sprintf(page+len, DRIVER_NAME ": ============== REGISTER DUMP ==============\n"); len += sprintf(page+len, DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", readl(host->ioaddr + SDHCI_DMA_ADDRESS), readw(host->ioaddr + SDHCI_HOST_VERSION)); len += sprintf(page+len, DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", readw(host->ioaddr + SDHCI_BLOCK_SIZE), readw(host->ioaddr + SDHCI_BLOCK_COUNT)); len += sprintf(page+len, DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", readl(host->ioaddr + SDHCI_ARGUMENT), readw(host->ioaddr + SDHCI_TRANSFER_MODE)); len += sprintf(page+len, DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", readl(host->ioaddr + SDHCI_PRESENT_STATE), readb(host->ioaddr + SDHCI_HOST_CONTROL)); len += sprintf(page+len, DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", readb(host->ioaddr + SDHCI_POWER_CONTROL), readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL)); len += sprintf(page+len, DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", readb(host->ioaddr + SDHCI_WALK_UP_CONTROL), readw(host->ioaddr + SDHCI_CLOCK_CONTROL)); len += sprintf(page+len, DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL), readl(host->ioaddr + SDHCI_INT_STATUS)); len += sprintf(page+len, DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", readl(host->ioaddr + SDHCI_INT_ENABLE), readl(host->ioaddr + SDHCI_SIGNAL_ENABLE)); len += sprintf(page+len, DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", readw(host->ioaddr + SDHCI_ACMD12_ERR