diff options
Diffstat (limited to 'drivers/scsi/wd719x.c')
| -rw-r--r-- | drivers/scsi/wd719x.c | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/drivers/scsi/wd719x.c b/drivers/scsi/wd719x.c index e3310e9488d2..2b44b0be2e00 100644 --- a/drivers/scsi/wd719x.c +++ b/drivers/scsi/wd719x.c @@ -107,8 +107,15 @@ static inline int wd719x_wait_done(struct wd719x *wd, int timeout) } if (status != WD719X_INT_NOERRORS) { + u8 sue = wd719x_readb(wd, WD719X_AMR_SCB_ERROR); + /* we get this after wd719x_dev_reset, it's not an error */ + if (sue == WD719X_SUE_TERM) + return 0; + /* we get this after wd719x_bus_reset, it's not an error */ + if (sue == WD719X_SUE_RESET) + return 0; dev_err(&wd->pdev->dev, "direct command failed, status 0x%02x, SUE 0x%02x\n", - status, wd719x_readb(wd, WD719X_AMR_SCB_ERROR)); + status, sue); return -EIO; } @@ -127,8 +134,10 @@ static int wd719x_direct_cmd(struct wd719x *wd, u8 opcode, u8 dev, u8 lun, if (wd719x_wait_ready(wd)) return -ETIMEDOUT; - /* make sure we get NO interrupts */ - dev |= WD719X_DISABLE_INT; + /* disable interrupts except for RESET/ABORT (it breaks them) */ + if (opcode != WD719X_CMD_BUSRESET && opcode != WD719X_CMD_ABORT && + opcode != WD719X_CMD_ABORT_TAG && opcode != WD719X_CMD_RESET) + dev |= WD719X_DISABLE_INT; wd719x_writeb(wd, WD719X_AMR_CMD_PARAM, dev); wd719x_writeb(wd, WD719X_AMR_CMD_PARAM_2, lun); wd719x_writeb(wd, WD719X_AMR_CMD_PARAM_3, tag); @@ -464,6 +473,7 @@ static int wd719x_abort(struct scsi_cmnd *cmd) spin_lock_irqsave(wd->sh->host_lock, flags); result = wd719x_direct_cmd(wd, action, cmd->device->id, cmd->device->lun, cmd->tag, scb->phys, 0); + wd719x_finish_cmd(scb, DID_ABORT); spin_unlock_irqrestore(wd->sh->host_lock, flags); if (result) return FAILED; @@ -476,6 +486,7 @@ static int wd719x_reset(struct scsi_cmnd *cmd, u8 opcode, u8 device) int result; unsigned long flags; struct wd719x *wd = shost_priv(cmd->device->host); + struct wd719x_scb *scb, *tmp; dev_info(&wd->pdev->dev, "%s reset requested\n", (opcode == WD719X_CMD_BUSRESET) ? "bus" : "device"); @@ -483,6 +494,12 @@ static int wd719x_reset(struct scsi_cmnd *cmd, u8 opcode, u8 device) spin_lock_irqsave(wd->sh->host_lock, flags); result = wd719x_direct_cmd(wd, opcode, device, 0, 0, 0, WD719X_WAIT_FOR_SCSI_RESET); + /* flush all SCBs (or all for a device if dev_reset) */ + list_for_each_entry_safe(scb, tmp, &wd->active_scbs, list) { + if (opcode == WD719X_CMD_BUSRESET || + scb->cmd->device->id == device) + wd719x_finish_cmd(scb, DID_RESET); + } spin_unlock_irqrestore(wd->sh->host_lock, flags); if (result) return FAILED; @@ -505,22 +522,23 @@ static int wd719x_host_reset(struct scsi_cmnd *cmd) struct wd719x *wd = shost_priv(cmd->device->host); struct wd719x_scb *scb, *tmp; unsigned long flags; - int result; dev_info(&wd->pdev->dev, "host reset requested\n"); spin_lock_irqsave(wd->sh->host_lock, flags); - /* Try to reinit the RISC */ - if (wd719x_chip_init(wd) == 0) - result = SUCCESS; - else - result = FAILED; + /* stop the RISC */ + if (wd719x_direct_cmd(wd, WD719X_CMD_SLEEP, 0, 0, 0, 0, + WD719X_WAIT_FOR_RISC)) + dev_warn(&wd->pdev->dev, "RISC sleep command failed\n"); + /* disable RISC */ + wd719x_writeb(wd, WD719X_PCI_MODE_SELECT, 0); /* flush all SCBs */ list_for_each_entry_safe(scb, tmp, &wd->active_scbs, list) - wd719x_finish_cmd(scb, result); + wd719x_finish_cmd(scb, DID_RESET); spin_unlock_irqrestore(wd->sh->host_lock, flags); - return result; + /* Try to reinit the RISC */ + return wd719x_chip_init(wd) == 0 ? SUCCESS : FAILED; } static int wd719x_biosparam(struct scsi_device *sdev, struct block_device *bdev, @@ -672,7 +690,7 @@ static irqreturn_t wd719x_interrupt(int irq, void *dev_id) else dev_err(&wd->pdev->dev, "card returned invalid SCB pointer\n"); } else - dev_warn(&wd->pdev->dev, "direct command 0x%x completed\n", + dev_dbg(&wd->pdev->dev, "direct command 0x%x completed\n", regs.bytes.OPC); break; case WD719X_INT_PIOREADY: |