mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-29 20:07:42 +02:00
17c7b6c3fd
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73
144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/* 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
|