-diff -urN linux.old/drivers/block/rb500/ata.c linux.dev/drivers/block/rb500/ata.c
---- linux.old/drivers/block/rb500/ata.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/block/rb500/ata.c 2006-06-09 01:58:40.000000000 +0200
-@@ -0,0 +1,474 @@
-+#include <linux/kernel.h> /* printk() */
-+#include <linux/module.h> /* module to be loadable */
-+#include <linux/delay.h>
-+#include <linux/sched.h>
-+#include <linux/pci.h>
-+#include <linux/ioport.h> /* request_mem_region() */
-+#include <asm/unaligned.h> /* ioremap() */
-+#include <asm/io.h> /* ioremap() */
-+#include <asm/rc32434/rb.h>
-+
-+#include "ata.h"
-+
-+#define REQUEST_MEM_REGION 0
-+#define DEBUG 1
-+
-+#if DEBUG
-+#define DEBUGP printk
-+#else
-+#define DEBUGP(format, args...)
-+#endif
-+
-+#define SECS 1000000 /* unit for wait_not_busy() is 1us */
-+
-+unsigned cf_head = 0;
-+unsigned cf_cyl = 0;
-+unsigned cf_spt = 0;
-+unsigned cf_sectors = 0;
-+static unsigned cf_block_size = 1;
-+static void *baddr = 0;
-+
-+#define DBUF32 ((volatile u32 *)((unsigned long)dev->baddr | ATA_DBUF_OFFSET))
-+
-+
-+static void cf_do_tasklet(unsigned long dev_l);
-+
-+
-+static inline void wareg(u8 val, unsigned reg, struct cf_mips_dev* dev)
-+{
-+ writeb(val, dev->baddr + ATA_REG_OFFSET + reg);
-+}
-+
-+static inline u8 rareg(unsigned reg, struct cf_mips_dev* dev)
-+{
-+ return readb(dev->baddr + ATA_REG_OFFSET + reg);
-+}
-+
-+static inline int get_gpio_bit(gpio_func ofs, struct cf_mips_dev *dev)
-+{
-+ return (gpio_get(ofs) >> dev->pin) & 1;
-+}
-+
-+static inline void set_gpio_bit(int bit, gpio_func ofs, struct cf_mips_dev *dev)
-+{
-+ gpio_set(ofs, (1 << dev->pin), ((bit & 1) << dev->pin));
-+}
-+
-+static inline int cfrdy(struct cf_mips_dev *dev)
-+{
-+ return get_gpio_bit(DATA, dev);
-+}
-+
-+static inline void prepare_cf_irq(struct cf_mips_dev *dev)
-+{
-+ set_gpio_bit(1, ILEVEL, dev); /* interrupt on cf ready (not busy) */
-+ set_gpio_bit(0, ISTAT, dev); /* clear interrupt status */
-+}
-+
-+static inline int cf_present(struct cf_mips_dev* dev)
-+{
-+ /* TODO: read and configure CIS into memory mapped mode
-+ * TODO: parse CISTPL_CONFIG on CF+ cards to get base address (0x200)
-+ * TODO: maybe adjust power saving setting for Hitachi Microdrive
-+ */
-+ int i;
-+
-+ /* setup CFRDY GPIO as input */
-+ set_gpio_bit(0, FUNC, dev);
-+ set_gpio_bit(0, CFG, dev);
-+
-+ for (i = 0; i < 0x10; ++i) {
-+ if (rareg(i,dev) != 0xff)
-+ return 1;
-+ }
-+ return 0;
-+}
-+
-+static inline int is_busy(struct cf_mips_dev *dev)
-+{
-+ return !cfrdy(dev);
-+}
-+
-+static int wait_not_busy(int to_us, int wait_for_busy,struct cf_mips_dev *dev)
-+{
-+ int us_passed = 0;
-+ if (wait_for_busy && !is_busy(dev)) {
-+ /* busy must appear within 400ns,
-+ * but it may dissapear before we see it
-+ * => must not wait for busy in a loop
-+ */
-+ ndelay(400);
-+ }
-+
-+ do {
-+ if (us_passed)
-+ udelay(1); /* never reached in async mode */
-+ if (!is_busy(dev)) {
-+ if (us_passed > 1 * SECS) {
-+ printk(KERN_WARNING "cf-mips: not busy ok (after %dus)"
-+ ", status 0x%02x\n", us_passed, (unsigned) rareg(ATA_REG_ST,dev));
-+ }
-+ return CF_TRANS_OK;
-+ }
-+ if (us_passed == 1 * SECS) {
-+ printk(KERN_WARNING "cf-mips: wait not busy %dus..\n", to_us);
-+ }
-+ if (dev->async_mode) {
-+ dev->to_timer.expires = jiffies + (to_us * HZ / SECS);
-+ dev->irq_enable_time = jiffies;
-+ prepare_cf_irq(dev);
-+ if (is_busy(dev)) {
-+ add_timer(&dev->to_timer);
-+ enable_irq(dev->irq);
-+ return CF_TRANS_IN_PROGRESS;
-+ }
-+ continue;
-+ }
-+ ++us_passed;
-+ } while (us_passed < to_us);
-+
-+ printk(KERN_ERR "cf-mips: wait not busy timeout (%dus)"
-+ ", status 0x%02x, state %d\n",
-+ to_us, (unsigned) rareg(ATA_REG_ST,dev), dev->tstate);
-+ return CF_TRANS_FAILED;
-+}
-+
-+static irqreturn_t cf_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
-+{
-+ /* While tasklet has not disabled irq, irq will be retried all the time
-+ * because of ILEVEL matching GPIO pin status => deadlock.
-+ * To avoid this, we change ILEVEL to 0.
-+ */
-+ struct cf_mips_dev *dev=dev_id;
-+
-+ set_gpio_bit(0, ILEVEL, dev);
-+ set_gpio_bit(0, ISTAT, dev);
-+
-+ del_timer(&dev->to_timer);
-+ tasklet_schedule(&dev->tasklet);
-+ return IRQ_HANDLED;
-+}
-+
-+static int do_reset(struct cf_mips_dev *dev)
-+{
-+ printk(KERN_INFO "cf-mips: resetting..\n");
-+
-+ wareg(ATA_REG_DC_SRST, ATA_REG_DC,dev);
-+ udelay(1); /* FIXME: how long should we wait here? */
-+ wareg(0, ATA_REG_DC,dev);
-+
-+ return wait_not_busy(30 * SECS, 1,dev);
-+}
-+
-+static int set_multiple(struct cf_mips_dev *dev)
-+{
-+ if (dev->block_size <= 1)
-+ return CF_TRANS_OK;
-+
-+ wareg(dev->block_size, ATA_REG_SC,dev);
-+ wareg(ATA_REG_DH_BASE | ATA_REG_DH_LBA, ATA_REG_DH,dev);
-+ wareg(ATA_CMD_SET_MULTIPLE, ATA_REG_CMD,dev);
-+
-+ return wait_not_busy(10 * SECS, 1,dev);
-+}
-+
-+static int set_cmd(struct cf_mips_dev *dev)
-+{
-+ //DEBUGP(KERN_INFO "cf-mips: ata cmd 0x%02x\n", dev->tcmd);
-+ // sector_count should be <=24 bits..
-+ BUG_ON(dev->tsect_start>=0x10000000);
-+ // This way, it addresses 2^24 * 512 = 128G
-+
-+ if (dev->tsector_count) {
-+ wareg(dev->tsector_count & 0xff, ATA_REG_SC,dev);
-+ wareg(dev->tsect_start & 0xff, ATA_REG_SN,dev);
-+ wareg((dev->tsect_start >> 8) & 0xff, ATA_REG_CL,dev);
-+ wareg((dev->tsect_start >> 16) & 0xff, ATA_REG_CH,dev);
-+ }
-+ wareg(((dev->tsect_start >> 24) & 0x0f) | ATA_REG_DH_BASE | ATA_REG_DH_LBA,
-+ ATA_REG_DH,dev); /* select drive on all commands */
-+ wareg(dev->tcmd, ATA_REG_CMD,dev);
-+ return wait_not_busy(10 * SECS, 1,dev);
-+}
-+
-+static int do_trans(struct cf_mips_dev *dev)
-+{
-+ int res;
-+ unsigned st;
-+ int transfered;
-+
-+ //printk("do_trans: %d sectors left\n",dev->tsectors_left);
-+ while (dev->tsectors_left) {
-+ transfered = 0;
-+
-+ st = rareg(ATA_REG_ST,dev);
-+ if (!(st & ATA_REG_ST_DRQ)) {
-+ printk(KERN_ERR "cf-mips: do_trans without DRQ (status 0x%x)!\n", st);
-+ if (st & ATA_REG_ST_ERR) {
-+ int errId = rareg(ATA_REG_ERR,dev);
-+ printk(KERN_ERR "cf-mips: %s error, status 0x%x, errid 0x%x\n",
-+ (dev->tread ? "read" : "write"), st, errId);
-+ }
-+ return CF_TRANS_FAILED;
-+ }
-+ do { /* Fill/read the buffer one block */
-+ u32 *qbuf, *qend;
-+ qbuf = (u32 *)dev->tbuf;
-+ qend = qbuf + CF_SECT_SIZE / sizeof(u32);
-+ if (dev->tread) {
-+ while (qbuf!=qend)
-+ put_unaligned(*DBUF32,qbuf++);
-+ //*(qbuf++) = *DBUF32;
-+ }
-+ else {
-+ while(qbuf!=qend)
-+ *DBUF32 = get_unaligned(qbuf++);
-+ }
-+
-+ dev->tsectors_left--;
-+ dev->tbuf += CF_SECT_SIZE;
-+ dev->tbuf_size -= CF_SECT_SIZE;
-+ transfered++;
-+ } while (transfered != dev->block_size && dev->tsectors_left > 0);
-+
-+ res = wait_not_busy(10 * SECS, 1,dev);
-+ if (res != CF_TRANS_OK)
-+ return res;
-+ };
-+
-+ st = rareg(ATA_REG_ST,dev);
-+ if (st & (ATA_REG_ST_DRQ | ATA_REG_ST_DWF | ATA_REG_ST_ERR)) {
-+ if (st & ATA_REG_ST_DRQ) {
-+ printk(KERN_ERR "cf-mips: DRQ after all %d sectors are %s"
-+ ", status 0x%x\n", dev->tsector_count, (dev->tread ? "read" : "written"), st);
-+ } else if (st & ATA_REG_ST_DWF) {
-+ printk(KERN_ERR "cf-mips: write fault, status 0x%x\n", st);
-+ } else {
-+ int errId = rareg(ATA_REG_ERR,dev);
-+ printk(KERN_ERR "cf-mips: %s error, status 0x%x, errid 0x%x\n",
-+ (dev->tread ? "read" : "write"), st, errId);
-+ }
-+ return CF_TRANS_FAILED;
-+ }
-+ return CF_TRANS_OK;
-+}
-+
-+static int cf_do_state(struct cf_mips_dev *dev)
-+{
-+ int res;
-+ switch (dev->tstate) { /* fall through everywhere */
-+ case TS_IDLE:
-+ dev->tstate = TS_READY;
-+ if (is_busy(dev)) {
-+ dev->tstate = TS_AFTER_RESET;
-+ res = do_reset(dev);
-+ if (res != CF_TRANS_OK)
-+ break;
-+ }
-+ case TS_AFTER_RESET:
-+ if (dev->tstate == TS_AFTER_RESET) {
-+ dev->tstate = TS_READY;
-+ res = set_multiple(dev);
-+ if (res != CF_TRANS_OK)
-+ break;
-+ }
-+ case TS_READY:
-+ dev->tstate = TS_CMD;
-+ res = set_cmd(dev);
-+ if (res != CF_TRANS_OK)
-+ break;;
-+ case TS_CMD:
-+ dev->tstate = TS_TRANS;
-+ case TS_TRANS:
-+ res = do_trans(dev);
-+ break;
-+ default:
-+ printk(KERN_ERR "cf-mips: BUG: unknown tstate %d\n", dev->tstate);
-+ return CF_TRANS_FAILED;
-+ }
-+ if (res != CF_TRANS_IN_PROGRESS)
-+ dev->tstate = TS_IDLE;
-+ return res;
-+}
-+
-+static void cf_do_tasklet(unsigned long dev_l)
-+{
-+ struct cf_mips_dev* dev=(struct cf_mips_dev*) dev_l;
-+ int res;
-+
-+ disable_irq(dev->irq);
-+
-+ if (dev->tstate == TS_IDLE)
-+ return; /* can happen when irq is first registered */
-+
-+#if 0
-+ DEBUGP(KERN_WARNING "cf-mips: not busy ok (tasklet) status 0x%02x\n",
-+ (unsigned) rareg(ATA_REG_ST,dev));
-+#endif
-+
-+ res = cf_do_state(dev);
-+ if (res == CF_TRANS_IN_PROGRESS)
-+ return;
-+ cf_async_trans_done(dev,res);
-+}
-+
-+static void cf_async_timeout(unsigned long dev_l)
-+{
-+ struct cf_mips_dev* dev=(struct cf_mips_dev*) dev_l;
-+ disable_irq(dev->irq);
-+ /* Perhaps send abort to the device? */
-+ printk(KERN_ERR "cf-mips: wait not busy timeout (%lus)"
-+ ", status 0x%02x, state %d\n",
-+ jiffies - dev->irq_enable_time, (unsigned) rareg(ATA_REG_ST,dev), dev->tstate);
-+ dev->tstate = TS_IDLE;
-+ cf_async_trans_done(dev,CF_TRANS_FAILED);
-+}
-+
-+int cf_do_transfer(struct cf_mips_dev* dev,sector_t sector, unsigned long nsect,
-+ char* buffer, int is_write)
-+{
-+ BUG_ON(dev->tstate!=TS_IDLE);
-+ if (nsect > ATA_MAX_SECT_PER_CMD) {
-+ printk(KERN_WARNING "cf-mips: sector count %lu out of range\n",nsect);
-+ return CF_TRANS_FAILED;
-+ }
-+ if (sector + nsect > dev->sectors) {
-+ printk(KERN_WARNING "cf-mips: sector %lu out of range\n",sector);
-+ return CF_TRANS_FAILED;
-+ }
-+ dev->tbuf = buffer;
-+ dev->tbuf_size = nsect*512;
-+ dev->tsect_start = sector;
-+ dev->tsector_count = nsect;
-+ dev->tsectors_left = dev->tsector_count;
-+ dev->tread = (is_write)?0:1;
-+
-+ dev->tcmd = (dev->block_size == 1 ?
-+ (is_write ? ATA_CMD_WRITE_SECTORS : ATA_CMD_READ_SECTORS) :
-+ (is_write ? ATA_CMD_WRITE_MULTIPLE : ATA_CMD_READ_MULTIPLE));
-+
-+ return cf_do_state(dev);
-+}
-+
-+static int do_identify(struct cf_mips_dev *dev)
-+{
-+ u16 sbuf[CF_SECT_SIZE >> 1];
-+ int res;
-+ char tstr[17]; //serial
-+ BUG_ON(dev->tstate!=TS_IDLE);
-+ dev->tbuf = (char *) sbuf;
-+ dev->tbuf_size = CF_SECT_SIZE;
-+ dev->tsect_start = 0;
-+ dev->tsector_count = 0;
-+ dev->tsectors_left = 1;
-+ dev->tread = 1;
-+ dev->tcmd = ATA_CMD_IDENTIFY_DRIVE;
-+
-+ DEBUGP(KERN_INFO "cf-mips: identify drive..\n");
-+ res = cf_do_state(dev);
-+ if (res == CF_TRANS_IN_PROGRESS) {
-+ printk(KERN_ERR "cf-mips: BUG: async identify cmd\n");
-+ return CF_TRANS_FAILED;
-+ }
-+ if (res != CF_TRANS_OK)
-+ return 0;
-+
-+ dev->head = sbuf[3];
-+ dev->cyl = sbuf[1];
-+ dev->spt = sbuf[6];
-+ dev->sectors = ((unsigned long) sbuf[7] << 16) | sbuf[8];
-+ dev->dtype=sbuf[0];
-+ memcpy(tstr,&sbuf[12],16);
-+ tstr[16]=0;
-+ printk(KERN_INFO "cf-mips: %s detected, C/H/S=%d/%d/%d sectors=%u (%uMB) Serial=%s\n",
-+ (sbuf[0] == 0x848A ? "CF card" : "ATA drive"), dev->cyl, dev->head,
-+ dev->spt, dev->sectors, dev->sectors >> 11,tstr);
-+ return 1;
-+}
-+
-+static void init_multiple(struct cf_mips_dev * dev)
-+{
-+ int res;
-+ DEBUGP(KERN_INFO "cf-mips: detecting block size\n");
-+
-+ dev->block_size = 128; /* max block size = 128 sectors (64KB) */
-+ do {
-+ wareg(dev->block_size, ATA_REG_SC,dev);
-+ wareg(ATA_REG_DH_BASE | ATA_REG_DH_LBA, ATA_REG_DH,dev);
-+ wareg(ATA_CMD_SET_MULTIPLE, ATA_REG_CMD,dev);
-+
-+ res = wait_not_busy(10 * SECS, 1,dev);
-+ if (res != CF_TRANS_OK) {
-+ printk(KERN_ERR "cf-mips: failed to detect block size: busy!\n");
-+ dev->block_size = 1;
-+ return;
-+ }
-+ if ((rareg(ATA_REG_ST,dev) & ATA_REG_ST_ERR) == 0)
-+ break;
-+ dev->block_size /= 2;
-+ } while (dev->block_size > 1);
-+
-+ printk(KERN_INFO "cf-mips: multiple sectors = %d\n", dev->block_size);
-+}
-+
-+int cf_init(struct cf_mips_dev *dev)
-+{
-+ tasklet_init(&dev->tasklet,cf_do_tasklet,(unsigned long)dev);
-+ dev->baddr = ioremap_nocache((unsigned long)dev->base, CFDEV_BUF_SIZE);
-+ if (!dev->baddr) {
-+ printk(KERN_ERR "cf-mips: cf_init: ioremap for (%lx,%x) failed\n",
-+ (unsigned long) dev->base, CFDEV_BUF_SIZE);
-+ return -EBUSY;
-+ }
-+
-+ if (!cf_present(dev)) {
-+ printk(KERN_WARNING "cf-mips: cf card not present\n");
-+ iounmap(dev->baddr);
-+ return -ENODEV;
-+ }
-+
-+ if (do_reset(dev) != CF_TRANS_OK) {
-+ printk(KERN_ERR "cf-mips: cf reset failed\n");
-+ iounmap(dev->baddr);
-+ return -EBUSY;
-+ }
-+
-+ if (!do_identify(dev)) {
-+ printk(KERN_ERR "cf-mips: cf identify failed\n");
-+ iounmap(dev->baddr);
-+ return -EBUSY;
-+ }
-+
-+/* set_apm_level(ATA_APM_WITH_STANDBY); */
-+ init_multiple(dev);
-+
-+ init_timer(&dev->to_timer);
-+ dev->to_timer.function = cf_async_timeout;
-+ dev->to_timer.data = (unsigned long)dev;
-+
-+ prepare_cf_irq(dev);
-+ if (request_irq(dev->irq, cf_irq_handler, 0, "CF Mips", dev)) {
-+ printk(KERN_ERR "cf-mips: failed to get irq\n");
-+ iounmap(dev->baddr);
-+ return -EBUSY;
-+ }
-+ /* Disable below would be odd, because request will enable, and the tasklet
-+ will disable it itself */
-+ //disable_irq(dev->irq);
-+
-+ dev->async_mode = 1;
-+
-+ return 0;
-+}
-+
-+void cf_cleanup(struct cf_mips_dev *dev)
-+{
-+ iounmap(dev->baddr);
-+ free_irq(dev->irq, NULL);
-+#if REQUEST_MEM_REGION
-+ release_mem_region((unsigned long)dev->base, CFDEV_BUF_SIZE);
-+#endif
-+}
-+
-+
-+/*eof*/
-diff -urN linux.old/drivers/block/rb500/ata.h linux.dev/drivers/block/rb500/ata.h
---- linux.old/drivers/block/rb500/ata.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/block/rb500/ata.h 2006-06-09 00:15:23.000000000 +0200
-@@ -0,0 +1,132 @@
-+#ifndef __CFMIPS_ATA_H__
-+#define __CFMIPS_ATA_H__
-+
-+#include <linux/interrupt.h>
-+
-+#define CFG_DC_DEV1 (void*)0xb8010010
-+#define CFG_DC_DEVBASE 0x0
-+#define CFG_DC_DEVMASK 0x4
-+#define CFG_DC_DEVC 0x8
-+#define CFG_DC_DEVTC 0xC
-+
-+#define CFDEV_BUF_SIZE 0x1000
-+#define ATA_CIS_OFFSET 0x200
-+#define ATA_REG_OFFSET 0x800
-+#define ATA_DBUF_OFFSET 0xC00
-+
-+#define ATA_REG_FEAT 0x1
-+#define ATA_REG_SC 0x2
-+#define ATA_REG_SN 0x3
-+#define ATA_REG_CL 0x4
-+#define ATA_REG_CH 0x5
-+#define ATA_REG_DH 0x6
-+#define ATA_REG_DH_BASE 0xa0
-+#define ATA_REG_DH_LBA 0x40
-+#define ATA_REG_DH_DRV 0x10
-+#define ATA_REG_CMD 0x7
-+#define ATA_REG_ST 0x7
-+#define ATA_REG_ST_BUSY 0x80
-+#define ATA_REG_ST_RDY 0x40
-+#define ATA_REG_ST_DWF 0x20
-+#define ATA_REG_ST_DSC 0x10
-+#define ATA_REG_ST_DRQ 0x08
-+#define ATA_REG_ST_CORR 0x04
-+#define ATA_REG_ST_ERR 0x01
-+#define ATA_REG_ERR 0xd
-+#define ATA_REG_DC 0xe
-+#define ATA_REG_DC_IEN 0x02
-+#define ATA_REG_DC_SRST 0x04
-+
-+#define ATA_CMD_READ_SECTORS 0x20
-+#define ATA_CMD_WRITE_SECTORS 0x30
-+#define ATA_CMD_EXEC_DRIVE_DIAG 0x90
-+#define ATA_CMD_READ_MULTIPLE 0xC4
-+#define ATA_CMD_WRITE_MULTIPLE 0xC5
-+#define ATA_CMD_SET_MULTIPLE 0xC6
-+#define ATA_CMD_IDENTIFY_DRIVE 0xEC
-+#define ATA_CMD_SET_FEATURES 0xEF
-+
-+#define ATA_FEATURE_ENABLE_APM 0x05
-+#define ATA_FEATURE_DISABLE_APM 0x85
-+#define ATA_APM_DISABLED 0x00
-+#define ATA_APM_MIN_POWER 0x01
-+#define ATA_APM_WITH_STANDBY 0x7f
-+#define ATA_APM_WITHOUT_STANDBY 0x80
-+#define ATA_APM_MAX_PERFORMANCE 0xfe
-+
-+#define CF_SECT_SIZE 0x200
-+/* That is the ratio CF_SECT_SIZE/512 (the kernel sector size) */
-+#define CF_KERNEL_MUL 1
-+#define ATA_MAX_SECT_PER_CMD 0x100
-+
-+#define CF_TRANS_FAILED 0
-+#define CF_TRANS_OK 1
-+#define CF_TRANS_IN_PROGRESS 2
-+
-+
-+enum trans_state {
-+ TS_IDLE = 0,
-+ TS_AFTER_RESET,
-+ TS_READY,
-+ TS_CMD,
-+ TS_TRANS
-+};
-+
-+//
-+// #if DEBUG
-+// static unsigned long busy_time;
-+// #endif
-+
-+/** Struct to hold the cfdev
-+Actually, all the data here only has one instance. However, for
-+reasons of programming conformity, it is passed around as a pointer
-+*/
-+struct cf_mips_dev {
-+ void *base; /* base address for I/O */
-+ void *baddr; /* remapped address */
-+
-+ int pin; /* gpio pin */
-+ int irq; /* gpio irq */
-+
-+ unsigned head;
-+ unsigned cyl;
-+ unsigned spt;
-+ unsigned sectors;
-+
-+ unsigned short block_size;
-+ unsigned dtype ; // ATA or CF
-+ struct request_queue *queue;
-+ struct gendisk *gd;
-+
-+ /* Transaction state */
-+ enum trans_state tstate;
-+ char *tbuf;
-+ unsigned long tbuf_size;
-+ sector_t tsect_start;
-+ unsigned tsector_count;
-+ unsigned tsectors_left;
-+ int tread;
-+ unsigned tcmd;
-+ int async_mode;
-+ unsigned long irq_enable_time;
-+
-+ struct request *active_req; /* A request is being carried out. Is that different from tstate? */
-+ int users;
-+ struct timer_list to_timer;
-+ struct tasklet_struct tasklet;
-+
-+ /** This lock ensures that the requests to this device are all done
-+ atomically. Transfers can run in parallel, requests are all queued
-+ one-by-one */
-+ spinlock_t lock;
-+};
-+
-+int cf_do_transfer(struct cf_mips_dev* dev,sector_t sector, unsigned long nsect,
-+ char* buffer, int is_write);
-+int cf_init(struct cf_mips_dev* dev);
-+void cf_cleanup(struct cf_mips_dev* dev);
-+
-+void cf_async_trans_done(struct cf_mips_dev* dev, int result);
-+// void *cf_get_next_buf(unsigned long *buf_size);
-+
-+#endif
-diff -urN linux.old/drivers/block/rb500/bdev.c linux.dev/drivers/block/rb500/bdev.c
---- linux.old/drivers/block/rb500/bdev.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/block/rb500/bdev.c 2006-06-15 16:29:04.000000000 +0200
-@@ -0,0 +1,340 @@
-+/* CF-mips driver
-+ This is a block driver for the direct (mmaped) interface to the CF-slot,
-+ found in Routerboard.com's RB532 board
-+ See SDK provided from routerboard.com.
-+
-+ Module adapted By P.Christeas <p_christeas@yahoo.com>, 2005-6.
-+ Cleaned up and adapted to platform_device by Felix Fietkau <nbd@openwrt.org>
-+
-+ This work is redistributed under the terms of the GNU General Public License.
-+*/
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/time.h>
-+#include <linux/wait.h>
-+#include <linux/fs.h>
-+#include <linux/genhd.h>
-+#include <linux/blkdev.h>
-+#include <linux/blkpg.h>
-+#include <linux/hdreg.h>
-+#include <linux/platform_device.h>
-+
-+#include <asm/uaccess.h>
-+#include <asm/io.h>
-+
-+#include <asm/rc32434/rb.h>
-+
-+#ifdef DEBUG
-+#define DEBUGP printk
-+#define DLEVEL 1
-+#else
-+#define DEBUGP(format, args...)
-+#define DLEVEL 0
-+#endif
-+
-+#define CF_MIPS_MAJOR 13
-+#define MAJOR_NR CF_MIPS_MAJOR
-+#define CF_MAX_PART 16 /* max 15 partitions */
-+
-+#include "ata.h"
-+
-+//extern struct block_device_operations cf_bdops;
-+
-+// static struct hd_struct cf_parts[CF_MAX_PART];
-+// static int cf_part_sizes[CF_MAX_PART];
-+// static int cf_hsect_sizes[CF_MAX_PART];
-+// static int cf_max_sectors[CF_MAX_PART];
-+// static int cf_blksize_sizes[CF_MAX_PART];
-+
-+// static spinlock_t lock = SPIN_LOCK_UNLOCKED;
-+
-+// volatile int cf_busy = 0;
-+
-+static struct request *active_req = NULL;
-+
-+static int cf_open (struct inode *, struct file *);
-+static int cf_release (struct inode *, struct file *);
-+static int cf_ioctl (struct inode *, struct file *, unsigned, unsigned long);
-+
-+static void cf_request(request_queue_t * q);
-+static int cf_transfer(const struct request *req);
-+
-+/*long (*unlocked_ioctl) (struct file *, unsigned, unsigned long);
-+long (*compat_ioctl) (struct file *, unsigned, unsigned long);*/
-+// int (*direct_access) (struct block_device *, sector_t, unsigned long *);
-+// int (*media_changed) (struct gendisk *);
-+// int (*revalidate_disk) (struct gendisk *);
-+
-+static struct block_device_operations cf_bdops = {
-+ .owner = THIS_MODULE,
-+ .open = cf_open,
-+ .release = cf_release,
-+ .ioctl = cf_ioctl,
-+ .media_changed = NULL,
-+ .unlocked_ioctl = NULL,
-+ .revalidate_disk = NULL,
-+ .compat_ioctl = NULL,
-+ .direct_access = NULL
-+};
-+
-+
-+int cf_mips_probe(struct platform_device *pdev)
-+{
-+ struct gendisk* cf_gendisk=NULL;
-+ struct cf_device *cdev = (struct cf_device *) pdev->dev.platform_data;
-+ struct cf_mips_dev *dev;
-+ struct resource *r;
-+ int reg_result;
-+
-+ reg_result = register_blkdev(MAJOR_NR, "cf-mips");
-+ if (reg_result < 0) {
-+ printk(KERN_WARNING "cf-mips: can't get major %d\n", MAJOR_NR);
-+ return reg_result;
-+ }
-+
-+ dev = (struct cf_mips_dev *)kmalloc(sizeof(struct cf_mips_dev),GFP_KERNEL);
-+ if (!dev)
-+ goto out_err;
-+ memset(dev, 0, sizeof(struct cf_mips_dev));
-+ cdev->dev = dev;
-+
-+ dev->pin = cdev->gpio_pin;
-+ dev->irq = platform_get_irq_byname(pdev, "cf_irq");
-+ r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cf_membase");
-+ dev->base = (void *) r->start;
-+
-+ if (cf_init(dev)) goto out_err;
-+ printk("init done");
-+
-+ spin_lock_init(&dev->lock);
-+ dev->queue = blk_init_queue(cf_request,&dev->lock);
-+ if (!dev->queue){
-+ printk(KERN_ERR "cf-mips: no mem for queue\n");
-+ goto out_err;
-+ }
-+ blk_queue_max_sectors(dev->queue,ATA_MAX_SECT_PER_CMD);
-+
-+ /* For memory devices, it is always better to avoid crossing segments
-+ inside the same request. */
-+/* if (dev->dtype==0x848A){
-+ printk(KERN_INFO "Setting boundary for cf to 0x%x",(dev->block_size*512)-1);
-+ blk_queue_segment_boundary(dev->queue, (dev->block_size*512)-1);
-+ }*/
-+
-+ dev->gd = alloc_disk(CF_MAX_PART);
-+ cf_gendisk = dev->gd;
-+ cdev->gd = dev->gd;
-+ if (!cf_gendisk) goto out_err; /* Last of these goto's */
-+
-+ cf_gendisk->major = MAJOR_NR;
-+ cf_gendisk->first_minor = 0;
-+ cf_gendisk->queue=dev->queue;
-+ BUG_ON(cf_gendisk->minors != CF_MAX_PART);
-+ strcpy(cf_gendisk->disk_name,"cfa");
-+ strcpy(cf_gendisk->devfs_name,"cf/card0");
-+ cf_gendisk->fops = &cf_bdops;
-+ cf_gendisk->flags = 0 ; /* is not yet GENHD_FL_REMOVABLE */
-+ cf_gendisk->private_data=dev;
-+
-+ set_capacity(cf_gendisk,dev->sectors * CF_KERNEL_MUL);
-+
-+ /* Let the disk go live */
-+ add_disk(cf_gendisk);
-+#if 0
-+ result = cf_init();
-+
-+ /* default cfg for all partitions */
-+ memset(cf_parts, 0, sizeof (cf_parts[0]) * CF_MAX_PART);
-+ memset(cf_part_sizes, 0, sizeof (cf_part_sizes[0]) * CF_MAX_PART);
-+ for (i = 0; i < CF_MAX_PART; ++i) {
-+ cf_hsect_sizes[i] = CF_SECT_SIZE;
-+ cf_max_sectors[i] = ATA_MAX_SECT_PER_CMD;
-+ cf_blksize_sizes[i] = BLOCK_SIZE;
-+ }
-+
-+ /* setup info for whole disk (partition 0) */
-+ cf_part_sizes[0] = cf_sectors / 2;
-+ cf_parts[0].nr_sects = cf_sectors;
-+
-+ blk_size[MAJOR_NR] = cf_part_sizes;
-+ blksize_size[MAJOR_NR] = cf_blksize_sizes;
-+ max_sectors[MAJOR_NR] = cf_max_sectors;
-+ hardsect_size[MAJOR_NR] = cf_hsect_sizes;
-+ read_ahead[MAJOR_NR] = 8; /* (4kB) */
-+
-+ blk_init_queue(BLK_DEFAULT_QUEUE(MAJOR_NR), DEVICE_REQUEST);
-+
-+ add_gendisk(&cf_gendisk);
-+#endif
-+// printk(KERN_INFO "cf-mips partition check: \n");
-+// register_disk(cf_gendisk, MKDEV(MAJOR_NR, 0), CF_MAX_PART,
-+// &cf_bdops, dev->sectors);
-+ return 0;
-+
-+out_err:
-+ if (dev->queue){
-+ blk_cleanup_queue(dev->queue);
-+ }
-+ if (reg_result) {
-+ unregister_blkdev(MAJOR_NR, "cf-mips");
-+ return reg_result;
-+ }
-+ if (dev){
-+ cf_cleanup(dev);
-+ kfree(dev);
-+ }
-+ return 1;
-+}
-+
-+static int
-+cf_mips_remove(struct platform_device *pdev)
-+{
-+ struct cf_device *cdev = (struct cf_device *) pdev->dev.platform_data;
-+ struct cf_mips_dev *dev = (struct cf_mips_dev *) cdev->dev;
-+
-+ unregister_blkdev(MAJOR_NR, "cf-mips");
-+ blk_cleanup_queue(dev->queue);
-+
-+ del_gendisk(dev->gd);
-+ cf_cleanup(dev);
-+ return 0;
-+}
-+
-+
-+static struct platform_driver cf_driver = {
-+ .driver.name = "rb500-cf",
-+ .probe = cf_mips_probe,
-+ .remove = cf_mips_remove,
-+};
-+
-+static int __init cf_mips_init(void)
-+{
-+ printk(KERN_INFO "cf-mips module loaded\n");
-+ return platform_driver_register(&cf_driver);
-+}
-+
-+static void cf_mips_cleanup(void)
-+{
-+ platform_driver_unregister(&cf_driver);
-+ printk(KERN_INFO "cf-mips module removed\n");
-+}
-+
-+module_init(cf_mips_init);
-+module_exit(cf_mips_cleanup);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS_BLOCKDEV_MAJOR(CF_MIPS_MAJOR);
-+
-+
-+static int cf_open(struct inode *inode, struct file *filp)
-+{
-+ struct cf_mips_dev *dev=inode->i_bdev->bd_disk->private_data;
-+ int minor = MINOR(inode->i_rdev);
-+
-+ if (minor >= CF_MAX_PART)
-+ return -ENODEV;
-+ //DEBUGP(KERN_INFO "cf-mips module opened, minor %d\n", minor);
-+ spin_lock(&dev->lock);
-+ dev->users++;
-+ spin_unlock(&dev->lock);
-+ filp->private_data=dev;
-+
-+ /* dirty workaround to set CFRDY GPIO as an input when some other
-+ program sets it as an output */
-+ gpio_set(CFG, (1 << dev->pin), 0);
-+ return 0; /* success */
-+}
-+
-+static int cf_release(struct inode *inode, struct file *filp)
-+{
-+ int minor = MINOR(inode->i_rdev);
-+ struct cf_mips_dev *dev=inode->i_bdev->bd_disk->private_data;
-+ spin_lock(&dev->lock);
-+ dev->users--;
-+ spin_unlock(&dev->lock);
-+ return 0;
-+}
-+
-+static int cf_ioctl(struct inode *inode, struct file *filp,
-+ unsigned int cmd, unsigned long arg)
-+{
-+ unsigned minor = MINOR(inode->i_rdev);
-+ struct cf_mips_dev *dev=inode->i_bdev->bd_disk->private_data;
-+
-+ DEBUGP(KERN_INFO "cf_ioctl cmd %u\n", cmd);
-+ switch (cmd) {
-+ case BLKRRPART: /* re-read partition table */
-+ if (!capable(CAP_SYS_ADMIN))
-+ return -EACCES;
-+ printk(KERN_INFO "cf-mips partition check: \n");
-+ register_disk(dev->gd);
-+ return 0;
-+
-+ case HDIO_GETGEO:
-+ {
-+ struct hd_geometry geo;
-+ geo.cylinders = dev->cyl;
-+ geo.heads = dev->head;
-+ geo.sectors = dev->spt;
-+ geo.start = (*dev->gd->part)[minor].start_sect;
-+ if (copy_to_user((void *) arg, &geo, sizeof (geo)))
-+ return -EFAULT;
-+ }
-+ return 0;
-+ }
-+
-+ return -EINVAL; /* unknown command */
-+}
-+
-+static void cf_request(request_queue_t * q)
-+{
-+ struct cf_mips_dev* dev;
-+
-+ struct request * req;
-+ int status;
-+
-+ /* We could have q->queuedata = dev , but haven't yet. */
-+ if (active_req)
-+ return;
-+
-+ while ((req=elv_next_request(q))!=NULL){
-+ dev=req->rq_disk->private_data;
-+ status=cf_transfer(req);
-+ if (status==CF_TRANS_IN_PROGRESS){
-+ active_req=req;
-+ return;
-+ }
-+ end_request(req,status);
-+ }
-+}
-+
-+static int cf_transfer(const struct request *req)
-+{
-+ struct cf_mips_dev* dev=req->rq_disk->private_data;
-+
-+ if (!blk_fs_request(req)){
-+ if (printk_ratelimit())
-+ printk(KERN_WARNING "cf-mips: skipping non-fs request 0x%x\n",req->cmd[0]);
-+ return CF_TRANS_FAILED;
-+ }
-+
-+ return cf_do_transfer(dev,req->sector,req->current_nr_sectors,req->buffer,rq_data_dir(req));
-+}
-+
-+void cf_async_trans_done(struct cf_mips_dev * dev,int result)
-+{
-+ struct request *req;
-+
-+ spin_lock(&dev->lock);
-+ req=active_req;
-+ active_req=NULL;
-+ end_request(req,result);
-+ spin_unlock(&dev->lock);
-+
-+ spin_lock(&dev->lock);
-+ cf_request(dev->queue);
-+ spin_unlock(&dev->lock);
-+}
-+
-diff -urN linux.old/drivers/block/rb500/Makefile linux.dev/drivers/block/rb500/Makefile
---- linux.old/drivers/block/rb500/Makefile 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/block/rb500/Makefile 2006-06-08 22:14:58.000000000 +0200
-@@ -0,0 +1,3 @@
-+## Makefile for the RB532 CF port
-+
-+obj-y += bdev.o ata.o
-diff -urN linux.old/drivers/Makefile linux.dev/drivers/Makefile
---- linux.old/drivers/Makefile 2006-06-08 20:20:52.000000000 +0200
-+++ linux.dev/drivers/Makefile 2006-06-08 22:14:58.000000000 +0200
-@@ -73,3 +73,4 @@
- obj-y += firmware/
- obj-$(CONFIG_CRYPTO) += crypto/
- obj-$(CONFIG_SUPERH) += sh/
-+obj-$(CONFIG_BLK_DEV_CF_MIPS) += block/rb500/
-\ No newline at end of file
projects / openwrt.git / blobdiff