diff options
Diffstat (limited to 'target/linux/rb532-2.6/patches/120-cf.patch')
| -rw-r--r-- | target/linux/rb532-2.6/patches/120-cf.patch | 987 |
1 files changed, 1 insertions, 986 deletions
diff --git a/target/linux/rb532-2.6/patches/120-cf.patch b/target/linux/rb532-2.6/patches/120-cf.patch index f702753c7..19395ef66 100644 --- a/target/linux/rb532-2.6/patches/120-cf.patch +++ b/target/linux/rb532-2.6/patches/120-cf.patch @@ -23,989 +23,4 @@ diff -urN linux.old/drivers/block/Makefile linux.dev/drivers/block/Makefile 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 + |