aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/rb1xx-2.6/patches/120-cf.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/rb1xx-2.6/patches/120-cf.patch')
-rw-r--r--target/linux/rb1xx-2.6/patches/120-cf.patch1011
1 files changed, 1011 insertions, 0 deletions
diff --git a/target/linux/rb1xx-2.6/patches/120-cf.patch b/target/linux/rb1xx-2.6/patches/120-cf.patch
new file mode 100644
index 0000000000..a22c526132
--- /dev/null
+++ b/target/linux/rb1xx-2.6/patches/120-cf.patch
@@ -0,0 +1,1011 @@
+diff -urN linux.old/drivers/block/Kconfig linux.dev/drivers/block/Kconfig
+--- linux.old/drivers/block/Kconfig 2006-10-26 02:43:39.000000000 +0200
++++ linux.dev/drivers/block/Kconfig 2006-10-26 00:11:14.000000000 +0200
+@@ -456,4 +456,12 @@
+ This driver provides Support for ATA over Ethernet block
+ devices like the Coraid EtherDrive (R) Storage Blade.
+
++config BLK_DEV_CF_MIPS
++ bool "CF slot of RB532 board"
++ depends on MIKROTIK_RB500 || MIPS_ADM5120
++ default y
++ help
++ The Routerboard 532 has a CF slot on it. Enable the special block
++ device driver for it.
++
+ endmenu
+diff -urN linux.old/drivers/block/Makefile linux.dev/drivers/block/Makefile
+--- linux.old/drivers/block/Makefile 2006-06-18 03:49:35.000000000 +0200
++++ linux.dev/drivers/block/Makefile 2006-10-26 02:44:10.000000000 +0200
+@@ -29,4 +29,5 @@
+ obj-$(CONFIG_VIODASD) += viodasd.o
+ obj-$(CONFIG_BLK_DEV_SX8) += sx8.o
+ obj-$(CONFIG_BLK_DEV_UB) += ub.o
++obj-$(CONFIG_BLK_DEV_CF_MIPS) += rb500/
+
+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 2006-10-26 00:11:14.000000000 +0200
+@@ -0,0 +1,485 @@
++/* 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> /* 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)
++{
++ /* 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 2006-10-26 00:11:14.000000000 +0200
+@@ -0,0 +1,143 @@
++/* 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.
++*/
++
++#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 2006-10-26 00:11:14.000000000 +0200
+@@ -0,0 +1,339 @@
++/* 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");
++ 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 2006-10-26 00:11:14.000000000 +0200
+@@ -0,0 +1,3 @@
++## Makefile for the RB532 CF port
++
++obj-y += bdev.o ata.o
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 22:13:57 +0000