diff options
Diffstat (limited to 'target/linux/rb532-2.6/files/drivers/block/rb500/ata.h')
| -rw-r--r-- | target/linux/rb532-2.6/files/drivers/block/rb500/ata.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/target/linux/rb532-2.6/files/drivers/block/rb500/ata.h b/target/linux/rb532-2.6/files/drivers/block/rb500/ata.h new file mode 100644 index 0000000000..15e8826308 --- /dev/null +++ b/target/linux/rb532-2.6/files/drivers/block/rb500/ata.h @@ -0,0 +1,143 @@ +/* CF-mips driver + This is a block driver for the direct (mmaped) interface to the CF-slot, + found in Routerboard.com's RB532 board + See SDK provided from routerboard.com. + + Module adapted By P.Christeas <p_christeas@yahoo.com>, 2005-6. + Cleaned up and adapted to platform_device by Felix Fietkau <nbd@openwrt.org> + + This work is redistributed under the terms of the GNU General Public License. +*/ + +#ifndef __CFMIPS_ATA_H__ +#define __CFMIPS_ATA_H__ + +#include <linux/interrupt.h> + +#define CFG_DC_DEV1 (void*)0xb8010010 +#define CFG_DC_DEVBASE 0x0 +#define CFG_DC_DEVMASK 0x4 +#define CFG_DC_DEVC 0x8 +#define CFG_DC_DEVTC 0xC + +#define CFDEV_BUF_SIZE 0x1000 +#define ATA_CIS_OFFSET 0x200 +#define ATA_REG_OFFSET 0x800 +#define ATA_DBUF_OFFSET 0xC00 + +#define ATA_REG_FEAT 0x1 +#define ATA_REG_SC 0x2 +#define ATA_REG_SN 0x3 +#define ATA_REG_CL 0x4 +#define ATA_REG_CH 0x5 +#define ATA_REG_DH 0x6 +#define ATA_REG_DH_BASE 0xa0 +#define ATA_REG_DH_LBA 0x40 +#define ATA_REG_DH_DRV 0x10 +#define ATA_REG_CMD 0x7 +#define ATA_REG_ST 0x7 +#define ATA_REG_ST_BUSY 0x80 +#define ATA_REG_ST_RDY 0x40 +#define ATA_REG_ST_DWF 0x20 +#define ATA_REG_ST_DSC 0x10 +#define ATA_REG_ST_DRQ 0x08 +#define ATA_REG_ST_CORR 0x04 +#define ATA_REG_ST_ERR 0x01 +#define ATA_REG_ERR 0xd +#define ATA_REG_DC 0xe +#define ATA_REG_DC_IEN 0x02 +#define ATA_REG_DC_SRST 0x04 + +#define ATA_CMD_READ_SECTORS 0x20 +#define ATA_CMD_WRITE_SECTORS 0x30 +#define ATA_CMD_EXEC_DRIVE_DIAG 0x90 +#define ATA_CMD_READ_MULTIPLE 0xC4 +#define ATA_CMD_WRITE_MULTIPLE 0xC5 +#define ATA_CMD_SET_MULTIPLE 0xC6 +#define ATA_CMD_IDENTIFY_DRIVE 0xEC +#define ATA_CMD_SET_FEATURES 0xEF + +#define ATA_FEATURE_ENABLE_APM 0x05 +#define ATA_FEATURE_DISABLE_APM 0x85 +#define ATA_APM_DISABLED 0x00 +#define ATA_APM_MIN_POWER 0x01 +#define ATA_APM_WITH_STANDBY 0x7f +#define ATA_APM_WITHOUT_STANDBY 0x80 +#define ATA_APM_MAX_PERFORMANCE 0xfe + +#define CF_SECT_SIZE 0x200 +/* That is the ratio CF_SECT_SIZE/512 (the kernel sector size) */ +#define CF_KERNEL_MUL 1 +#define ATA_MAX_SECT_PER_CMD 0x100 + +#define CF_TRANS_FAILED 0 +#define CF_TRANS_OK 1 +#define CF_TRANS_IN_PROGRESS 2 + + +enum trans_state { + TS_IDLE = 0, + TS_AFTER_RESET, + TS_READY, + TS_CMD, + TS_TRANS +}; + +// +// #if DEBUG +// static unsigned long busy_time; +// #endif + +/** Struct to hold the cfdev +Actually, all the data here only has one instance. However, for +reasons of programming conformity, it is passed around as a pointer +*/ +struct cf_mips_dev { + void *base; /* base address for I/O */ + void *baddr; /* remapped address */ + + int pin; /* gpio pin */ + int irq; /* gpio irq */ + + unsigned head; + unsigned cyl; + unsigned spt; + unsigned sectors; + + unsigned short block_size; + unsigned dtype ; // ATA or CF + struct request_queue *queue; + struct gendisk *gd; + + /* Transaction state */ + enum trans_state tstate; + char *tbuf; + unsigned long tbuf_size; + sector_t tsect_start; + unsigned tsector_count; + unsigned tsectors_left; + int tread; + unsigned tcmd; + int async_mode; + unsigned long irq_enable_time; + + struct request *active_req; /* A request is being carried out. Is that different from tstate? */ + int users; + struct timer_list to_timer; + struct tasklet_struct tasklet; + + /** This lock ensures that the requests to this device are all done + atomically. Transfers can run in parallel, requests are all queued + one-by-one */ + spinlock_t lock; +}; + +int cf_do_transfer(struct cf_mips_dev* dev,sector_t sector, unsigned long nsect, + char* buffer, int is_write); +int cf_init(struct cf_mips_dev* dev); +void cf_cleanup(struct cf_mips_dev* dev); + +void cf_async_trans_done(struct cf_mips_dev* dev, int result); +// void *cf_get_next_buf(unsigned long *buf_size); + +#endif |