diff options
Diffstat (limited to 'target/linux/rb532/files/drivers/block')
| -rw-r--r-- | target/linux/rb532/files/drivers/block/rb500/Makefile | 3 | ||||
| -rw-r--r-- | target/linux/rb532/files/drivers/block/rb500/ata.c | 487 | ||||
| -rw-r--r-- | target/linux/rb532/files/drivers/block/rb500/ata.h | 143 | ||||
| -rw-r--r-- | target/linux/rb532/files/drivers/block/rb500/bdev.c | 340 |
4 files changed, 0 insertions, 973 deletions
diff --git a/target/linux/rb532/files/drivers/block/rb500/Makefile b/target/linux/rb532/files/drivers/block/rb500/Makefile deleted file mode 100644 index 3e14dc35bd..0000000000 --- a/target/linux/rb532/files/drivers/block/rb500/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -## Makefile for the RB532 CF port - -obj-y += bdev.o ata.o diff --git a/target/linux/rb532/files/drivers/block/rb500/ata.c b/target/linux/rb532/files/drivers/block/rb500/ata.c deleted file mode 100644 index 31e6782fa4..0000000000 --- a/target/linux/rb532/files/drivers/block/rb500/ata.c +++ /dev/null @@ -1,487 +0,0 @@ -/* 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/gpio.h> -#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 cfrdy(struct cf_mips_dev *dev) -{ - return gpio_get_value(dev->pin); -} - -static inline void prepare_cf_irq(struct cf_mips_dev *dev) -{ - rb500_gpio_set_int_level(1, dev->pin); /* interrupt on cf ready (not busy) */ - rb500_gpio_set_int_status(0, dev->pin); /* 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 */ - rb500_gpio_set_func(dev->pin, 0); - gpio_direction_input(dev->pin); - - 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; - - rb500_gpio_set_int_level(0, dev->pin); - rb500_gpio_set_int_status(0, dev->pin); - - 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 - char tmp; - int i; - 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'; - - /* Byte-swap the serial number */ - for (i = 0; i<8; i++) { - tmp = tstr[i * 2]; - tstr[i * 2] = tstr[i * 2 +1]; - tstr[i * 2 + 1] = tmp; - } - - 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 --git a/target/linux/rb532/files/drivers/block/rb500/ata.h b/target/linux/rb532/files/drivers/block/rb500/ata.h deleted file mode 100644 index 15e8826308..0000000000 --- a/target/linux/rb532/files/drivers/block/rb500/ata.h +++ /dev/null @@ -1,143 +0,0 @@ -/* 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 --git a/target/linux/rb532/files/drivers/block/rb500/bdev.c b/target/linux/rb532/files/drivers/block/rb500/bdev.c deleted file mode 100644 index f8a9b02d70..0000000000 --- a/target/linux/rb532/files/drivers/block/rb500/bdev.c +++ /dev/null @@ -1,340 +0,0 @@ -/* 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/gpio.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_value(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); -} - |