mirror of https://github.com/hak5/openwrt-owl.git
Florian Fainelli
parent
0ac7bc1cfb
commit
4da7f2dbed
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@ -1,3 +0,0 @@
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## Makefile for the RB1xx CF port
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obj-$(CONFIG_BLK_DEV_CF_MIPS) += rb153-cf.o
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rb153-cf-objs := bdev.o ata.o
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@ -1,508 +0,0 @@
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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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Module adapted By P.Christeas <p_christeas@yahoo.com>, 2005-6.
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Cleaned up and adapted to platform_device by Felix Fietkau <nbd@openwrt.org>
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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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#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>
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#include <asm/io.h>
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#include <asm/gpio.h>
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#include <gpio.h>
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#include <adm5120_defs.h>
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#include <adm5120_irq.h>
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#include <adm5120_switch.h>
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#include <adm5120_intc.h>
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#include <adm5120_mpmc.h>
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#include <adm5120_cf.h>
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#include "ata.h"
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#define REQUEST_MEM_REGION 0
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#define DEBUG 1
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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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#define SECS 1000000 /* unit for wait_not_busy() is 1us */
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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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#define DBUF32 ((volatile u32 *)((unsigned long)dev->baddr | ATA_DBUF_OFFSET))
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#define INTC_WRITE(reg, val) __raw_writel((val), \
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(void __iomem *)(KSEG1ADDR(ADM5120_INTC_BASE) + reg))
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#define INTC_READ(reg) __raw_readl(\
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(void __iomem *)(KSEG1ADDR(ADM5120_INTC_BASE) + reg))
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static void cf_do_tasklet(unsigned long dev_l);
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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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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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static inline int cfrdy(struct cf_mips_dev *dev)
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{
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return gpio_get_value(12);
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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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/* interrupt on cf ready (not busy) */
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INTC_WRITE(INTC_REG_INT_LEVEL, INTC_READ(INTC_REG_INT_LEVEL) | ADM5120_CF_IRQ_LEVEL_BIT);
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/* FIXME: how to clear interrupt status? */
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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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/* FIXME: enabling of EXTIO will be done by BIOS in future */
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unsigned cmd = EXTIO_CS0_INT0_EN;
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int i;
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/* on RB100 WAIT is LOW all the time => read will hang */
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if (gpio_get_value(8))
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cmd |= EXTIO_WAIT_EN;
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SW_WRITE_REG(GPIO_CONF2, cmd);
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SW_WRITE_REG(GPIO_CONF0, (SW_READ_REG(GPIO_CONF0) & ~(1 << (16 + ADM5120_CF_GPIO_NUM))));
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/* FIXME: timings will be set by BIOS in future - remove this */
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MPMC_WRITE_REG(SC2, 0x88);
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MPMC_WRITE_REG(WEN2, 0x02);
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MPMC_WRITE_REG(OEN2, 0x03);
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MPMC_WRITE_REG(RD2, 0x1a);
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MPMC_WRITE_REG(PG2, 0x1d);
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MPMC_WRITE_REG(WR2, 0x14);
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MPMC_WRITE_REG(TN2, 0x09);
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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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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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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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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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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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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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if (!cfrdy(dev))
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return; // false interrupt (only for ADM5120)
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INTC_WRITE(INTC_REG_INT_LEVEL, (INTC_READ(INTC_REG_INT_LEVEL) & (~ADM5120_CF_IRQ_LEVEL_BIT)));
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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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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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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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return wait_not_busy(30 * SECS, 1,dev);
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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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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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return wait_not_busy(10 * SECS, 1,dev);
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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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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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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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//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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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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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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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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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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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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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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static void cf_do_tasklet(unsigned long dev_l)
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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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disable_irq(dev->irq);
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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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#if 0
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DEBUGP(KERN_WARNING "cf-mips: not busy ok (tasklet) status 0x%02x\n",
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(unsigned) rareg(ATA_REG_ST,dev));
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#endif
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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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}
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static void cf_async_timeout(unsigned long dev_l)
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{
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struct cf_mips_dev* dev=(struct cf_mips_dev*) dev_l;
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disable_irq(dev->irq);
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/* Perhaps send abort to the device? */
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printk(KERN_ERR "cf-mips: wait not busy timeout (%lus)"
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", status 0x%02x, state %d\n",
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jiffies - dev->irq_enable_time, (unsigned) rareg(ATA_REG_ST,dev), dev->tstate);
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dev->tstate = TS_IDLE;
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cf_async_trans_done(dev,CF_TRANS_FAILED);
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}
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int cf_do_transfer(struct cf_mips_dev* dev,sector_t sector, unsigned long nsect,
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char* buffer, int is_write)
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{
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BUG_ON(dev->tstate!=TS_IDLE);
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if (nsect > ATA_MAX_SECT_PER_CMD) {
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printk(KERN_WARNING "cf-mips: sector count %lu out of range\n",nsect);
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return CF_TRANS_FAILED;
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}
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if (sector + nsect > dev->sectors) {
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printk(KERN_WARNING "cf-mips: sector %lu out of range\n",sector);
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return CF_TRANS_FAILED;
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}
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dev->tbuf = buffer;
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dev->tbuf_size = nsect*512;
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dev->tsect_start = sector;
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dev->tsector_count = nsect;
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dev->tsectors_left = dev->tsector_count;
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dev->tread = (is_write)?0:1;
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dev->tcmd = (dev->block_size == 1 ?
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(is_write ? ATA_CMD_WRITE_SECTORS : ATA_CMD_READ_SECTORS) :
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(is_write ? ATA_CMD_WRITE_MULTIPLE : ATA_CMD_READ_MULTIPLE));
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return cf_do_state(dev);
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}
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static int do_identify(struct cf_mips_dev *dev)
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{
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u16 sbuf[CF_SECT_SIZE >> 1];
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int res;
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char tstr[17]; //serial
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BUG_ON(dev->tstate!=TS_IDLE);
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dev->tbuf = (char *) sbuf;
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dev->tbuf_size = CF_SECT_SIZE;
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dev->tsect_start = 0;
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dev->tsector_count = 0;
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dev->tsectors_left = 1;
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dev->tread = 1;
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dev->tcmd = ATA_CMD_IDENTIFY_DRIVE;
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DEBUGP(KERN_INFO "cf-mips: identify drive..\n");
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res = cf_do_state(dev);
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if (res == CF_TRANS_IN_PROGRESS) {
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printk(KERN_ERR "cf-mips: BUG: async identify cmd\n");
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return CF_TRANS_FAILED;
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}
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if (res != CF_TRANS_OK)
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return 0;
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dev->head = sbuf[3];
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dev->cyl = sbuf[1];
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dev->spt = sbuf[6];
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dev->sectors = ((unsigned long) sbuf[7] << 16) | sbuf[8];
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dev->dtype=sbuf[0];
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memcpy(tstr,&sbuf[12],16);
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tstr[16]=0;
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printk(KERN_INFO "cf-mips: %s detected, C/H/S=%d/%d/%d sectors=%u (%uMB) Serial=%s\n",
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(sbuf[0] == 0x848A ? "CF card" : "ATA drive"), dev->cyl, dev->head,
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dev->spt, dev->sectors, dev->sectors >> 11,tstr);
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return 1;
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}
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static void init_multiple(struct cf_mips_dev * dev)
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{
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int res;
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DEBUGP(KERN_INFO "cf-mips: detecting block size\n");
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dev->block_size = 128; /* max block size = 128 sectors (64KB) */
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do {
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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);
|
||||
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*/
|
||||
|
|
@ -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
|
||||
|
|
@ -1,341 +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/mach-adm5120/adm5120_cf.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 *)kzalloc(sizeof(struct cf_mips_dev),GFP_KERNEL);
|
||||
if (!dev)
|
||||
goto out_err;
|
||||
|
||||
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(KERN_INFO "cf-mips: init done\n");
|
||||
|
||||
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 = "rb153-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);
|
||||
}
|
||||
|
||||
|
|
@ -1,43 +0,0 @@
|
|||
Index: linux-2.6.23/drivers/block/Kconfig
|
||||
===================================================================
|
||||
--- linux-2.6.23/drivers/block/Kconfig 2007-10-09 22:31:38.000000000 +0200
|
||||
+++ linux-2.6.23.new/drivers/block/Kconfig 2007-10-22 18:07:49.000000000 +0200
|
||||
@@ -65,6 +65,14 @@
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called z2ram.
|
||||
|
||||
+config BLK_DEV_CF_MIPS
|
||||
+ tristate "CF slot of RB153 board"
|
||||
+ depends on MIPS_ADM5120
|
||||
+ default y
|
||||
+ help
|
||||
+ The Routerboard 153 has a CF slot on it. Enable the special block
|
||||
+ device driver for it.
|
||||
+
|
||||
config BLK_DEV_XD
|
||||
tristate "XT hard disk support"
|
||||
depends on ISA && ISA_DMA_API
|
||||
Index: linux-2.6.23/drivers/block/Makefile
|
||||
===================================================================
|
||||
--- linux-2.6.23/drivers/block/Makefile 2007-10-09 22:31:38.000000000 +0200
|
||||
+++ linux-2.6.23.new/drivers/block/Makefile.new 2007-10-22 18:08:15.000000000 +0200
|
||||
@@ -7,6 +7,7 @@
|
||||
|
||||
obj-$(CONFIG_MAC_FLOPPY) += swim3.o
|
||||
obj-$(CONFIG_BLK_DEV_FD) += floppy.o
|
||||
+obj-$(CONFIG_BLK_DEV_CF_MIPS) += rb1xx/
|
||||
obj-$(CONFIG_AMIGA_FLOPPY) += amiflop.o
|
||||
obj-$(CONFIG_PS3_DISK) += ps3disk.o
|
||||
obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o
|
||||
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
|
||||
index 722e12e..60af038 100644
|
||||
--- a/fs/partitions/check.c
|
||||
+++ b/fs/partitions/check.c
|
||||
@@ -526,6 +526,7 @@ exit:
|
||||
kobject_uevent(&p->kobj, KOBJ_ADD);
|
||||
}
|
||||
}
|
||||
+EXPORT_SYMBOL(register_disk);
|
||||
|
||||
int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
|
||||
{
|
||||
Loading…
Reference in New Issue