sata_promise: new EH conversion for 20619 chips, take 2

This patch updates the sata_promise driver to use new-style
libata error handling for 20619 (TX4000) chips. sata_promise
already uses new EH for the other chips it supports, so the
patch is quite simple:

* remove ->phy_reset and ->eng_timeout ops from pdc_pata_ops,
  and instead bind ->freeze, ->thaw, ->error_handler, and
  ->post_internal_cmd to existing new EH functions
* drop ATA_FLAG_SRST from board_20619's flags
* remove now unused pdc_pata_phy_reset() and pdc_eng_timeout()

Tested on a TX4000 with both modern working disks and old/quirky
disks. Also used a CD-RW drive to test reading and writing CDs.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c
index da8c362c3eb02432c941d677c167cd69ba9a32b9..cf9ed8c3930155bf87cd0d08c63c1ee84d977539 100644 (file)
--- a/drivers/ata/sata_promise.c
+++ b/drivers/ata/sata_promise.c
@@ -119,9 +119,7 @@ static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg);
 static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
 static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
 static irqreturn_t pdc_interrupt (int irq, void *dev_instance);
-static void pdc_eng_timeout(struct ata_port *ap);
 static int pdc_port_start(struct ata_port *ap);
-static void pdc_pata_phy_reset(struct ata_port *ap);
 static void pdc_qc_prep(struct ata_queued_cmd *qc);
 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
@@ -215,12 +213,12 @@ static const struct ata_port_operations pdc_pata_ops = {
        .dev_select             = ata_std_dev_select,
        .check_atapi_dma        = pdc_check_atapi_dma,
 
-       .phy_reset              = pdc_pata_phy_reset,
-
        .qc_prep                = pdc_qc_prep,
        .qc_issue               = pdc_qc_issue_prot,
+       .freeze                 = pdc_freeze,
+       .thaw                   = pdc_thaw,
+       .error_handler          = pdc_error_handler,
        .data_xfer              = ata_data_xfer,
-       .eng_timeout            = pdc_eng_timeout,
        .irq_handler            = pdc_interrupt,
        .irq_clear              = pdc_irq_clear,
        .irq_on                 = ata_irq_on,
@@ -253,7 +251,7 @@ static const struct ata_port_info pdc_port_info[] = {
        /* board_20619 */
        {
                .sht            = &pdc_ata_sht,
-               .flags          = PDC_COMMON_FLAGS | ATA_FLAG_SRST | ATA_FLAG_SLAVE_POSS,
+               .flags          = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
                .pio_mask       = 0x1f, /* pio0-4 */
                .mwdma_mask     = 0x07, /* mwdma0-2 */
                .udma_mask      = 0x7f, /* udma0-6 ; FIXME */
@@ -389,14 +387,6 @@ static void pdc_pata_cbl_detect(struct ata_port *ap)
                ap->cbl = ATA_CBL_PATA80;
 }
 
-static void pdc_pata_phy_reset(struct ata_port *ap)
-{
-       pdc_pata_cbl_detect(ap);
-       pdc_reset_port(ap);
-       ata_port_probe(ap);
-       ata_bus_reset(ap);
-}
-
 static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
 {
        if (sc_reg > SCR_CONTROL || ap->cbl != ATA_CBL_SATA)
@@ -599,43 +589,6 @@ static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
                pdc_reset_port(ap);
 }
 
-static void pdc_eng_timeout(struct ata_port *ap)
-{
-       struct ata_host *host = ap->host;
-       u8 drv_stat;
-       struct ata_queued_cmd *qc;
-       unsigned long flags;
-
-       DPRINTK("ENTER\n");
-
-       spin_lock_irqsave(&host->lock, flags);
-
-       qc = ata_qc_from_tag(ap, ap->active_tag);
-
-       switch (qc->tf.protocol) {
-       case ATA_PROT_DMA:
-       case ATA_PROT_NODATA:
-               ata_port_printk(ap, KERN_ERR, "command timeout\n");
-               drv_stat = ata_wait_idle(ap);
-               qc->err_mask |= __ac_err_mask(drv_stat);
-               break;
-
-       default:
-               drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
-
-               ata_port_printk(ap, KERN_ERR,
-                               "unknown timeout, cmd 0x%x stat 0x%x\n",
-                               qc->tf.command, drv_stat);
-
-               qc->err_mask |= ac_err_mask(drv_stat);
-               break;
-       }
-
-       spin_unlock_irqrestore(&host->lock, flags);
-       ata_eh_qc_complete(qc);
-       DPRINTK("EXIT\n");
-}
-
 static inline unsigned int pdc_host_intr( struct ata_port *ap,
                                           struct ata_queued_cmd *qc)
 {