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@@ -0,0 +1,1011 @@
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+diff -urN linux.old/drivers/block/Kconfig linux.dev/drivers/block/Kconfig
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+--- linux.old/drivers/block/Kconfig 2006-10-26 02:43:39.000000000 +0200
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++++ linux.dev/drivers/block/Kconfig 2006-10-26 00:11:14.000000000 +0200
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+@@ -456,4 +456,12 @@
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+ This driver provides Support for ATA over Ethernet block
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+ devices like the Coraid EtherDrive (R) Storage Blade.
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+
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++config BLK_DEV_CF_MIPS
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++ bool "CF slot of RB532 board"
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++ depends on MIKROTIK_RB500 || MIPS_ADM5120
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++ default y
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++ help
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++ The Routerboard 532 has a CF slot on it. Enable the special block
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++ device driver for it.
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++
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+ endmenu
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+diff -urN linux.old/drivers/block/Makefile linux.dev/drivers/block/Makefile
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+--- linux.old/drivers/block/Makefile 2006-06-18 03:49:35.000000000 +0200
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++++ linux.dev/drivers/block/Makefile 2006-10-26 02:44:10.000000000 +0200
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+@@ -29,4 +29,5 @@
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+ obj-$(CONFIG_VIODASD) += viodasd.o
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+ obj-$(CONFIG_BLK_DEV_SX8) += sx8.o
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+ obj-$(CONFIG_BLK_DEV_UB) += ub.o
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++obj-$(CONFIG_BLK_DEV_CF_MIPS) += rb500/
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+
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+diff -urN linux.old/drivers/block/rb500/ata.c linux.dev/drivers/block/rb500/ata.c
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+--- linux.old/drivers/block/rb500/ata.c 1970-01-01 01:00:00.000000000 +0100
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++++ linux.dev/drivers/block/rb500/ata.c 2006-10-26 00:11:14.000000000 +0200
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+@@ -0,0 +1,485 @@
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++/* CF-mips driver
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++ This is a block driver for the direct (mmaped) interface to the CF-slot,
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++ found in Routerboard.com's RB532 board
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++ See SDK provided from routerboard.com.
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++
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++ Module adapted By P.Christeas <[email protected]>, 2005-6.
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++ Cleaned up and adapted to platform_device by Felix Fietkau <[email protected]>
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++
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++ This work is redistributed under the terms of the GNU General Public License.
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++*/
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++
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++#include <linux/kernel.h> /* printk() */
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++#include <linux/module.h> /* module to be loadable */
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++#include <linux/delay.h>
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++#include <linux/sched.h>
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++#include <linux/pci.h>
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++#include <linux/ioport.h> /* request_mem_region() */
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++#include <asm/unaligned.h> /* ioremap() */
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++#include <asm/io.h> /* ioremap() */
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++#include <asm/rc32434/rb.h>
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++
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++#include "ata.h"
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++
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++#define REQUEST_MEM_REGION 0
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++#define DEBUG 1
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++
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++#if DEBUG
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++#define DEBUGP printk
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++#else
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++#define DEBUGP(format, args...)
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++#endif
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++
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++#define SECS 1000000 /* unit for wait_not_busy() is 1us */
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++
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++unsigned cf_head = 0;
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++unsigned cf_cyl = 0;
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++unsigned cf_spt = 0;
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++unsigned cf_sectors = 0;
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++static unsigned cf_block_size = 1;
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++static void *baddr = 0;
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++
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++#define DBUF32 ((volatile u32 *)((unsigned long)dev->baddr | ATA_DBUF_OFFSET))
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++
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++
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++static void cf_do_tasklet(unsigned long dev_l);
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++
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++
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++static inline void wareg(u8 val, unsigned reg, struct cf_mips_dev* dev)
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++{
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++ writeb(val, dev->baddr + ATA_REG_OFFSET + reg);
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++}
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++
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++static inline u8 rareg(unsigned reg, struct cf_mips_dev* dev)
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++{
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++ return readb(dev->baddr + ATA_REG_OFFSET + reg);
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++}
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++
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++static inline int get_gpio_bit(gpio_func ofs, struct cf_mips_dev *dev)
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++{
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++ return (gpio_get(ofs) >> dev->pin) & 1;
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++}
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++
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++static inline void set_gpio_bit(int bit, gpio_func ofs, struct cf_mips_dev *dev)
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++{
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++ gpio_set(ofs, (1 << dev->pin), ((bit & 1) << dev->pin));
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++}
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++
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++static inline int cfrdy(struct cf_mips_dev *dev)
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++{
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++ return get_gpio_bit(DATA, dev);
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++}
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++
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++static inline void prepare_cf_irq(struct cf_mips_dev *dev)
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++{
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++ set_gpio_bit(1, ILEVEL, dev); /* interrupt on cf ready (not busy) */
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++ set_gpio_bit(0, ISTAT, dev); /* clear interrupt status */
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++}
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++
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++static inline int cf_present(struct cf_mips_dev* dev)
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++{
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++ /* TODO: read and configure CIS into memory mapped mode
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++ * TODO: parse CISTPL_CONFIG on CF+ cards to get base address (0x200)
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++ * TODO: maybe adjust power saving setting for Hitachi Microdrive
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++ */
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++ int i;
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++
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++ /* setup CFRDY GPIO as input */
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++ set_gpio_bit(0, FUNC, dev);
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++ set_gpio_bit(0, CFG, dev);
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++
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++ for (i = 0; i < 0x10; ++i) {
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++ if (rareg(i,dev) != 0xff)
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++ return 1;
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++ }
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++ return 0;
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++}
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++
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++static inline int is_busy(struct cf_mips_dev *dev)
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++{
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++ return !cfrdy(dev);
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++}
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++
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++static int wait_not_busy(int to_us, int wait_for_busy,struct cf_mips_dev *dev)
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++{
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++ int us_passed = 0;
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++ if (wait_for_busy && !is_busy(dev)) {
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++ /* busy must appear within 400ns,
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++ * but it may dissapear before we see it
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++ * => must not wait for busy in a loop
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++ */
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++ ndelay(400);
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++ }
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++
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++ do {
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++ if (us_passed)
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++ udelay(1); /* never reached in async mode */
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++ if (!is_busy(dev)) {
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++ if (us_passed > 1 * SECS) {
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++ printk(KERN_WARNING "cf-mips: not busy ok (after %dus)"
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++ ", status 0x%02x\n", us_passed, (unsigned) rareg(ATA_REG_ST,dev));
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++ }
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++ return CF_TRANS_OK;
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++ }
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++ if (us_passed == 1 * SECS) {
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++ printk(KERN_WARNING "cf-mips: wait not busy %dus..\n", to_us);
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++ }
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++ if (dev->async_mode) {
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++ dev->to_timer.expires = jiffies + (to_us * HZ / SECS);
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++ dev->irq_enable_time = jiffies;
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++ prepare_cf_irq(dev);
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++ if (is_busy(dev)) {
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++ add_timer(&dev->to_timer);
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++ enable_irq(dev->irq);
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++ return CF_TRANS_IN_PROGRESS;
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++ }
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++ continue;
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++ }
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++ ++us_passed;
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++ } while (us_passed < to_us);
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++
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++ printk(KERN_ERR "cf-mips: wait not busy timeout (%dus)"
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++ ", status 0x%02x, state %d\n",
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++ to_us, (unsigned) rareg(ATA_REG_ST,dev), dev->tstate);
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++ return CF_TRANS_FAILED;
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++}
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++
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++static irqreturn_t cf_irq_handler(int irq, void *dev_id)
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++{
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++ /* While tasklet has not disabled irq, irq will be retried all the time
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++ * because of ILEVEL matching GPIO pin status => deadlock.
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++ * To avoid this, we change ILEVEL to 0.
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++ */
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++ struct cf_mips_dev *dev=dev_id;
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++
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++ set_gpio_bit(0, ILEVEL, dev);
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++ set_gpio_bit(0, ISTAT, dev);
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++
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++ del_timer(&dev->to_timer);
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++ tasklet_schedule(&dev->tasklet);
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++ return IRQ_HANDLED;
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++}
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++
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++static int do_reset(struct cf_mips_dev *dev)
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++{
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++ printk(KERN_INFO "cf-mips: resetting..\n");
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++
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++ wareg(ATA_REG_DC_SRST, ATA_REG_DC,dev);
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++ udelay(1); /* FIXME: how long should we wait here? */
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++ wareg(0, ATA_REG_DC,dev);
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++
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++ return wait_not_busy(30 * SECS, 1,dev);
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++}
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++
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++static int set_multiple(struct cf_mips_dev *dev)
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++{
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++ if (dev->block_size <= 1)
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++ return CF_TRANS_OK;
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++
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++ wareg(dev->block_size, ATA_REG_SC,dev);
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++ wareg(ATA_REG_DH_BASE | ATA_REG_DH_LBA, ATA_REG_DH,dev);
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++ wareg(ATA_CMD_SET_MULTIPLE, ATA_REG_CMD,dev);
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++
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++ return wait_not_busy(10 * SECS, 1,dev);
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++}
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++
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++static int set_cmd(struct cf_mips_dev *dev)
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++{
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++ //DEBUGP(KERN_INFO "cf-mips: ata cmd 0x%02x\n", dev->tcmd);
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++ // sector_count should be <=24 bits..
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++ BUG_ON(dev->tsect_start>=0x10000000);
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++ // This way, it addresses 2^24 * 512 = 128G
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++
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++ if (dev->tsector_count) {
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++ wareg(dev->tsector_count & 0xff, ATA_REG_SC,dev);
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++ wareg(dev->tsect_start & 0xff, ATA_REG_SN,dev);
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++ wareg((dev->tsect_start >> 8) & 0xff, ATA_REG_CL,dev);
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++ wareg((dev->tsect_start >> 16) & 0xff, ATA_REG_CH,dev);
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++ }
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++ wareg(((dev->tsect_start >> 24) & 0x0f) | ATA_REG_DH_BASE | ATA_REG_DH_LBA,
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++ ATA_REG_DH,dev); /* select drive on all commands */
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++ wareg(dev->tcmd, ATA_REG_CMD,dev);
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++ return wait_not_busy(10 * SECS, 1,dev);
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++}
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++
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++static int do_trans(struct cf_mips_dev *dev)
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++{
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++ int res;
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++ unsigned st;
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++ int transfered;
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++
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++ //printk("do_trans: %d sectors left\n",dev->tsectors_left);
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++ while (dev->tsectors_left) {
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++ transfered = 0;
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++
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++ st = rareg(ATA_REG_ST,dev);
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++ if (!(st & ATA_REG_ST_DRQ)) {
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++ printk(KERN_ERR "cf-mips: do_trans without DRQ (status 0x%x)!\n", st);
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++ if (st & ATA_REG_ST_ERR) {
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++ int errId = rareg(ATA_REG_ERR,dev);
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++ printk(KERN_ERR "cf-mips: %s error, status 0x%x, errid 0x%x\n",
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++ (dev->tread ? "read" : "write"), st, errId);
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++ }
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++ return CF_TRANS_FAILED;
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++ }
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++ do { /* Fill/read the buffer one block */
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++ u32 *qbuf, *qend;
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++ qbuf = (u32 *)dev->tbuf;
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++ qend = qbuf + CF_SECT_SIZE / sizeof(u32);
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++ if (dev->tread) {
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++ while (qbuf!=qend)
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++ put_unaligned(*DBUF32,qbuf++);
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++ //*(qbuf++) = *DBUF32;
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++ }
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++ else {
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++ while(qbuf!=qend)
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++ *DBUF32 = get_unaligned(qbuf++);
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++ }
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++
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++ dev->tsectors_left--;
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++ dev->tbuf += CF_SECT_SIZE;
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++ dev->tbuf_size -= CF_SECT_SIZE;
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++ transfered++;
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++ } while (transfered != dev->block_size && dev->tsectors_left > 0);
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++
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++ res = wait_not_busy(10 * SECS, 1,dev);
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++ if (res != CF_TRANS_OK)
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++ return res;
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++ };
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++
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++ st = rareg(ATA_REG_ST,dev);
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++ if (st & (ATA_REG_ST_DRQ | ATA_REG_ST_DWF | ATA_REG_ST_ERR)) {
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++ if (st & ATA_REG_ST_DRQ) {
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++ printk(KERN_ERR "cf-mips: DRQ after all %d sectors are %s"
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++ ", status 0x%x\n", dev->tsector_count, (dev->tread ? "read" : "written"), st);
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++ } else if (st & ATA_REG_ST_DWF) {
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++ printk(KERN_ERR "cf-mips: write fault, status 0x%x\n", st);
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++ } else {
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++ int errId = rareg(ATA_REG_ERR,dev);
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++ printk(KERN_ERR "cf-mips: %s error, status 0x%x, errid 0x%x\n",
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++ (dev->tread ? "read" : "write"), st, errId);
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++ }
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++ return CF_TRANS_FAILED;
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++ }
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++ return CF_TRANS_OK;
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++}
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++
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|
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++static int cf_do_state(struct cf_mips_dev *dev)
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++{
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++ int res;
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++ switch (dev->tstate) { /* fall through everywhere */
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++ case TS_IDLE:
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++ dev->tstate = TS_READY;
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++ if (is_busy(dev)) {
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++ dev->tstate = TS_AFTER_RESET;
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++ res = do_reset(dev);
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++ if (res != CF_TRANS_OK)
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++ break;
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++ }
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++ case TS_AFTER_RESET:
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++ if (dev->tstate == TS_AFTER_RESET) {
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++ dev->tstate = TS_READY;
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++ res = set_multiple(dev);
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++ if (res != CF_TRANS_OK)
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++ break;
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++ }
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|
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++ case TS_READY:
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++ dev->tstate = TS_CMD;
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++ res = set_cmd(dev);
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++ if (res != CF_TRANS_OK)
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++ break;;
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|
|
++ case TS_CMD:
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|
++ dev->tstate = TS_TRANS;
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|
|
++ case TS_TRANS:
|
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++ res = do_trans(dev);
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++ break;
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|
|
++ default:
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|
|
++ printk(KERN_ERR "cf-mips: BUG: unknown tstate %d\n", dev->tstate);
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|
|
++ return CF_TRANS_FAILED;
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|
|
++ }
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|
|
++ if (res != CF_TRANS_IN_PROGRESS)
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|
|
++ dev->tstate = TS_IDLE;
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|
|
++ return res;
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|
|
++}
|
|
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++
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|
|
++static void cf_do_tasklet(unsigned long dev_l)
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|
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++{
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|
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++ struct cf_mips_dev* dev=(struct cf_mips_dev*) dev_l;
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|
|
++ int res;
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++
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|
|
++ disable_irq(dev->irq);
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++
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|
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++ if (dev->tstate == TS_IDLE)
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|
|
++ return; /* can happen when irq is first registered */
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++
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|
|
++#if 0
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|
|
++ DEBUGP(KERN_WARNING "cf-mips: not busy ok (tasklet) status 0x%02x\n",
|
|
|
++ (unsigned) rareg(ATA_REG_ST,dev));
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|
|
++#endif
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++
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|
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++ res = cf_do_state(dev);
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|
|
++ if (res == CF_TRANS_IN_PROGRESS)
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|
|
++ return;
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|
|
++ cf_async_trans_done(dev,res);
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|
|
++}
|
|
|
++
|
|
|
++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 <[email protected]>, 2005-6.
|
|
|
++ Cleaned up and adapted to platform_device by Felix Fietkau <[email protected]>
|
|
|
++
|
|
|
++ 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 <[email protected]>, 2005-6.
|
|
|
++ Cleaned up and adapted to platform_device by Felix Fietkau <[email protected]>
|
|
|
++
|
|
|
++ 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
|