[PATCH] libata: rename host states
Changes: s/PIO_ST_/HSM_ST_/ and s/pio_task_state/hsm_task_state/. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Albert Lee
Jeff Garzik
Родитель
ee500aabf1
Коммит
14be71f4c5
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@ -2425,20 +2425,20 @@ void ata_poll_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
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static unsigned long ata_pio_poll(struct ata_port *ap)
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{
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u8 status;
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unsigned int poll_state = PIO_ST_UNKNOWN;
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unsigned int reg_state = PIO_ST_UNKNOWN;
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const unsigned int tmout_state = PIO_ST_TMOUT;
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unsigned int poll_state = HSM_ST_UNKNOWN;
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unsigned int reg_state = HSM_ST_UNKNOWN;
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const unsigned int tmout_state = HSM_ST_TMOUT;
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switch (ap->pio_task_state) {
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case PIO_ST:
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case PIO_ST_POLL:
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poll_state = PIO_ST_POLL;
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reg_state = PIO_ST;
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switch (ap->hsm_task_state) {
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case HSM_ST:
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case HSM_ST_POLL:
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poll_state = HSM_ST_POLL;
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reg_state = HSM_ST;
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break;
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case PIO_ST_LAST:
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case PIO_ST_LAST_POLL:
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poll_state = PIO_ST_LAST_POLL;
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reg_state = PIO_ST_LAST;
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case HSM_ST_LAST:
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case HSM_ST_LAST_POLL:
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poll_state = HSM_ST_LAST_POLL;
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reg_state = HSM_ST_LAST;
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break;
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default:
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BUG();
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@ -2448,14 +2448,14 @@ static unsigned long ata_pio_poll(struct ata_port *ap)
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status = ata_chk_status(ap);
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if (status & ATA_BUSY) {
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if (time_after(jiffies, ap->pio_task_timeout)) {
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ap->pio_task_state = tmout_state;
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ap->hsm_task_state = tmout_state;
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return 0;
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}
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ap->pio_task_state = poll_state;
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ap->hsm_task_state = poll_state;
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return ATA_SHORT_PAUSE;
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}
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ap->pio_task_state = reg_state;
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ap->hsm_task_state = reg_state;
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return 0;
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}
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@ -2480,14 +2480,14 @@ static int ata_pio_complete (struct ata_port *ap)
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* we enter, BSY will be cleared in a chk-status or two. If not,
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* the drive is probably seeking or something. Snooze for a couple
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* msecs, then chk-status again. If still busy, fall back to
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* PIO_ST_POLL state.
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* HSM_ST_POLL state.
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*/
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drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
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if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
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msleep(2);
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drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
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if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
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ap->pio_task_state = PIO_ST_LAST_POLL;
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ap->hsm_task_state = HSM_ST_LAST_POLL;
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ap->pio_task_timeout = jiffies + ATA_TMOUT_PIO;
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return 0;
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}
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@ -2495,14 +2495,14 @@ static int ata_pio_complete (struct ata_port *ap)
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drv_stat = ata_wait_idle(ap);
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if (!ata_ok(drv_stat)) {
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ap->pio_task_state = PIO_ST_ERR;
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ap->hsm_task_state = HSM_ST_ERR;
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return 0;
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}
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qc = ata_qc_from_tag(ap, ap->active_tag);
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assert(qc != NULL);
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ap->pio_task_state = PIO_ST_IDLE;
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ap->hsm_task_state = HSM_ST_IDLE;
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ata_poll_qc_complete(qc, drv_stat);
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@ -2662,7 +2662,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
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unsigned char *buf;
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if (qc->cursect == (qc->nsect - 1))
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ap->pio_task_state = PIO_ST_LAST;
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ap->hsm_task_state = HSM_ST_LAST;
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page = sg[qc->cursg].page;
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offset = sg[qc->cursg].offset + qc->cursg_ofs * ATA_SECT_SIZE;
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@ -2712,7 +2712,7 @@ static void __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)
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unsigned int offset, count;
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if (qc->curbytes + bytes >= qc->nbytes)
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ap->pio_task_state = PIO_ST_LAST;
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ap->hsm_task_state = HSM_ST_LAST;
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next_sg:
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if (unlikely(qc->cursg >= qc->n_elem)) {
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@ -2734,7 +2734,7 @@ next_sg:
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for (i = 0; i < words; i++)
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ata_data_xfer(ap, (unsigned char*)pad_buf, 2, do_write);
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ap->pio_task_state = PIO_ST_LAST;
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ap->hsm_task_state = HSM_ST_LAST;
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return;
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}
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@ -2815,7 +2815,7 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc)
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err_out:
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printk(KERN_INFO "ata%u: dev %u: ATAPI check failed\n",
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ap->id, dev->devno);
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ap->pio_task_state = PIO_ST_ERR;
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ap->hsm_task_state = HSM_ST_ERR;
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}
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/**
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@ -2837,14 +2837,14 @@ static void ata_pio_block(struct ata_port *ap)
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* a chk-status or two. If not, the drive is probably seeking
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* or something. Snooze for a couple msecs, then
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* chk-status again. If still busy, fall back to
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* PIO_ST_POLL state.
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* HSM_ST_POLL state.
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*/
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status = ata_busy_wait(ap, ATA_BUSY, 5);
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if (status & ATA_BUSY) {
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msleep(2);
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status = ata_busy_wait(ap, ATA_BUSY, 10);
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if (status & ATA_BUSY) {
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ap->pio_task_state = PIO_ST_POLL;
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ap->hsm_task_state = HSM_ST_POLL;
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ap->pio_task_timeout = jiffies + ATA_TMOUT_PIO;
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return;
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}
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@ -2856,7 +2856,7 @@ static void ata_pio_block(struct ata_port *ap)
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if (is_atapi_taskfile(&qc->tf)) {
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/* no more data to transfer or unsupported ATAPI command */
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if ((status & ATA_DRQ) == 0) {
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ap->pio_task_state = PIO_ST_LAST;
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ap->hsm_task_state = HSM_ST_LAST;
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return;
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}
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@ -2864,7 +2864,7 @@ static void ata_pio_block(struct ata_port *ap)
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} else {
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/* handle BSY=0, DRQ=0 as error */
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if ((status & ATA_DRQ) == 0) {
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ap->pio_task_state = PIO_ST_ERR;
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ap->hsm_task_state = HSM_ST_ERR;
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return;
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}
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@ -2884,7 +2884,7 @@ static void ata_pio_error(struct ata_port *ap)
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printk(KERN_WARNING "ata%u: PIO error, drv_stat 0x%x\n",
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ap->id, drv_stat);
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ap->pio_task_state = PIO_ST_IDLE;
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ap->hsm_task_state = HSM_ST_IDLE;
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ata_poll_qc_complete(qc, drv_stat | ATA_ERR);
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}
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@ -2899,25 +2899,25 @@ fsm_start:
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timeout = 0;
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qc_completed = 0;
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switch (ap->pio_task_state) {
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case PIO_ST_IDLE:
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switch (ap->hsm_task_state) {
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case HSM_ST_IDLE:
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return;
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case PIO_ST:
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case HSM_ST:
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ata_pio_block(ap);
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break;
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case PIO_ST_LAST:
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case HSM_ST_LAST:
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qc_completed = ata_pio_complete(ap);
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break;
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case PIO_ST_POLL:
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case PIO_ST_LAST_POLL:
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case HSM_ST_POLL:
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case HSM_ST_LAST_POLL:
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timeout = ata_pio_poll(ap);
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break;
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case PIO_ST_TMOUT:
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case PIO_ST_ERR:
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case HSM_ST_TMOUT:
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case HSM_ST_ERR:
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ata_pio_error(ap);
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return;
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}
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@ -3360,7 +3360,7 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc)
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case ATA_PROT_PIO: /* load tf registers, initiate polling pio */
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ata_qc_set_polling(qc);
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ata_tf_to_host_nolock(ap, &qc->tf);
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ap->pio_task_state = PIO_ST;
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ap->hsm_task_state = HSM_ST;
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queue_work(ata_wq, &ap->pio_task);
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break;
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@ -3806,7 +3806,7 @@ static void atapi_packet_task(void *_data)
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ata_data_xfer(ap, qc->cdb, ap->cdb_len, 1);
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/* PIO commands are handled by polling */
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ap->pio_task_state = PIO_ST;
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ap->hsm_task_state = HSM_ST;
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queue_work(ata_wq, &ap->pio_task);
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}
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@ -156,15 +156,15 @@ enum {
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ATA_SHIFT_PIO = 11,
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};
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enum pio_task_states {
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PIO_ST_UNKNOWN,
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PIO_ST_IDLE,
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PIO_ST_POLL,
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PIO_ST_TMOUT,
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PIO_ST,
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PIO_ST_LAST,
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PIO_ST_LAST_POLL,
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PIO_ST_ERR,
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enum hsm_task_states {
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HSM_ST_UNKNOWN,
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HSM_ST_IDLE,
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HSM_ST_POLL,
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HSM_ST_TMOUT,
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HSM_ST,
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HSM_ST_LAST,
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HSM_ST_LAST_POLL,
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HSM_ST_ERR,
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};
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/* forward declarations */
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@ -319,7 +319,7 @@ struct ata_port {
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struct work_struct packet_task;
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struct work_struct pio_task;
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unsigned int pio_task_state;
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unsigned int hsm_task_state;
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unsigned long pio_task_timeout;
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void *private_data;
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