libata: more irq driven pio follow-up patches
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Cover letter [PATCH/RFC 0/4] libata: more irq driven pio follow-up patches
Dear all,
More irq driven PIO follow-up patches per Jeff's advice:
1. merge ata_dataout_task and ata_pio_task
2. add read/write multiple support
patch 1/4: move functions
- move atapi_send_cdb() and ata_dataout_task() to be near
ata_pio_*() functions
patch 2/4: remove ap->dataout_task
- remove ap->dataout_task
- let ata_pio_task() handle the HSM_ST_FIRST state.
- rename ata_dataout_task() to ata_pio_first_block()
patch 3/4: integrate ata_pio_first_block() with ata_pio_task()
- change the return value of ata_pio_complete()
- add return value for ata_pio_first_block()
- rename variable "qc_completed" to "has_next" in ata_pio_task()
patch 4/4: add read/write multiple support
- add ATA_CMD_READ_MULTI, etc. to ata.h
- add multi_count to ata_device and initialize it with device
identify data
- merge ata_prot_to_cmd() with ata_dev_set_protocol()
- ata_pio_complete(): change the wait condition from (ATA_BUSY |ATA_DRQ) to ATA_BUSY
- add ata_pio_sectors() to support r/w multiple commands
- ata_pio_block(): add ata_altstatus(ap) to prevent reading device
status before it is valid
Patch against libata-dev irq-pio branch (54f00389563c80fa1de250a21256313ba01ca07d).
For your review and advice, thanks.
Albert