diff options
Diffstat (limited to 'drivers/scsi/smartpqi/smartpqi_sis.c')
| -rw-r--r-- | drivers/scsi/smartpqi/smartpqi_sis.c | 111 |
1 files changed, 27 insertions, 84 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_sis.c b/drivers/scsi/smartpqi/smartpqi_sis.c index e55dfcf200e5..5141bd4c9f06 100644 --- a/drivers/scsi/smartpqi/smartpqi_sis.c +++ b/drivers/scsi/smartpqi/smartpqi_sis.c @@ -34,11 +34,13 @@ #define SIS_REENABLE_SIS_MODE 0x1 #define SIS_ENABLE_MSIX 0x40 #define SIS_ENABLE_INTX 0x80 -#define SIS_SOFT_RESET 0x100 -#define SIS_TRIGGER_SHUTDOWN 0x800000 #define SIS_CMD_READY 0x200 +#define SIS_TRIGGER_SHUTDOWN 0x800000 +#define SIS_PQI_RESET_QUIESCE 0x1000000 + #define SIS_CMD_COMPLETE 0x1000 #define SIS_CLEAR_CTRL_TO_HOST_DOORBELL 0x1000 + #define SIS_CMD_STATUS_SUCCESS 0x1 #define SIS_CMD_COMPLETE_TIMEOUT_SECS 30 #define SIS_CMD_COMPLETE_POLL_INTERVAL_MSECS 10 @@ -47,6 +49,7 @@ #define SIS_EXTENDED_PROPERTIES_SUPPORTED 0x800000 #define SIS_SMARTARRAY_FEATURES_SUPPORTED 0x2 #define SIS_PQI_MODE_SUPPORTED 0x4 +#define SIS_PQI_RESET_QUIESCE_SUPPORTED 0x8 #define SIS_REQUIRED_EXTENDED_PROPERTIES \ (SIS_SMARTARRAY_FEATURES_SUPPORTED | SIS_PQI_MODE_SUPPORTED) @@ -258,6 +261,9 @@ int sis_get_ctrl_properties(struct pqi_ctrl_info *ctrl_info) SIS_REQUIRED_EXTENDED_PROPERTIES) return -ENODEV; + if (extended_properties & SIS_PQI_RESET_QUIESCE_SUPPORTED) + ctrl_info->pqi_reset_quiesce_supported = true; + return 0; } @@ -336,9 +342,10 @@ out: #define SIS_DOORBELL_BIT_CLEAR_TIMEOUT_SECS 30 -static void sis_wait_for_doorbell_bit_to_clear( +static int sis_wait_for_doorbell_bit_to_clear( struct pqi_ctrl_info *ctrl_info, u32 bit) { + int rc = 0; u32 doorbell_register; unsigned long timeout; @@ -350,78 +357,38 @@ static void sis_wait_for_doorbell_bit_to_clear( if ((doorbell_register & bit) == 0) break; if (readl(&ctrl_info->registers->sis_firmware_status) & - SIS_CTRL_KERNEL_PANIC) + SIS_CTRL_KERNEL_PANIC) { + rc = -ENODEV; break; + } if (time_after(jiffies, timeout)) { dev_err(&ctrl_info->pci_dev->dev, "doorbell register bit 0x%x not cleared\n", bit); + rc = -ETIMEDOUT; break; } usleep_range(1000, 2000); } -} - -/* Enable MSI-X interrupts on the controller. */ - -void sis_enable_msix(struct pqi_ctrl_info *ctrl_info) -{ - u32 doorbell_register; - - doorbell_register = - readl(&ctrl_info->registers->sis_host_to_ctrl_doorbell); - doorbell_register |= SIS_ENABLE_MSIX; - - writel(doorbell_register, - &ctrl_info->registers->sis_host_to_ctrl_doorbell); - sis_wait_for_doorbell_bit_to_clear(ctrl_info, SIS_ENABLE_MSIX); + return rc; } -/* Disable MSI-X interrupts on the controller. */ - -void sis_disable_msix(struct pqi_ctrl_info *ctrl_info) +static inline int sis_set_doorbell_bit(struct pqi_ctrl_info *ctrl_info, u32 bit) { - u32 doorbell_register; - - doorbell_register = - readl(&ctrl_info->registers->sis_host_to_ctrl_doorbell); - doorbell_register &= ~SIS_ENABLE_MSIX; + writel(bit, &ctrl_info->registers->sis_host_to_ctrl_doorbell); - writel(doorbell_register, - &ctrl_info->registers->sis_host_to_ctrl_doorbell); + return sis_wait_for_doorbell_bit_to_clear(ctrl_info, bit); } -void sis_enable_intx(struct pqi_ctrl_info *ctrl_info) +void sis_enable_msix(struct pqi_ctrl_info *ctrl_info) { - u32 doorbell_register; - - doorbell_register = - readl(&ctrl_info->registers->sis_host_to_ctrl_doorbell); - doorbell_register |= SIS_ENABLE_INTX; - - writel(doorbell_register, - &ctrl_info->registers->sis_host_to_ctrl_doorbell); - - sis_wait_for_doorbell_bit_to_clear(ctrl_info, SIS_ENABLE_INTX); + sis_set_doorbell_bit(ctrl_info, SIS_ENABLE_MSIX); } -void sis_disable_intx(struct pqi_ctrl_info *ctrl_info) -{ - u32 doorbell_register; - - doorbell_register = - readl(&ctrl_info->registers->sis_host_to_ctrl_doorbell); - doorbell_register &= ~SIS_ENABLE_INTX; - - writel(doorbell_register, - &ctrl_info->registers->sis_host_to_ctrl_doorbell); -} - -void sis_soft_reset(struct pqi_ctrl_info *ctrl_info) +void sis_enable_intx(struct pqi_ctrl_info *ctrl_info) { - writel(SIS_SOFT_RESET, - &ctrl_info->registers->sis_host_to_ctrl_doorbell); + sis_set_doorbell_bit(ctrl_info, SIS_ENABLE_INTX); } void sis_shutdown_ctrl(struct pqi_ctrl_info *ctrl_info) @@ -434,38 +401,14 @@ void sis_shutdown_ctrl(struct pqi_ctrl_info *ctrl_info) &ctrl_info->registers->sis_host_to_ctrl_doorbell); } -#define SIS_MODE_READY_TIMEOUT_SECS 30 +int sis_pqi_reset_quiesce(struct pqi_ctrl_info *ctrl_info) +{ + return sis_set_doorbell_bit(ctrl_info, SIS_PQI_RESET_QUIESCE); +} int sis_reenable_sis_mode(struct pqi_ctrl_info *ctrl_info) { - int rc; - unsigned long timeout; - struct pqi_ctrl_registers __iomem *registers; - u32 doorbell; - - registers = ctrl_info->registers; - - writel(SIS_REENABLE_SIS_MODE, - ®isters->sis_host_to_ctrl_doorbell); - - rc = 0; - timeout = (SIS_MODE_READY_TIMEOUT_SECS * HZ) + jiffies; - - while (1) { - doorbell = readl(®isters->sis_ctrl_to_host_doorbell); - if ((doorbell & SIS_REENABLE_SIS_MODE) == 0) - break; - if (time_after(jiffies, timeout)) { - rc = -ETIMEDOUT; - break; - } - } - - if (rc) - dev_err(&ctrl_info->pci_dev->dev, - "re-enabling SIS mode failed\n"); - - return rc; + return sis_set_doorbell_bit(ctrl_info, SIS_REENABLE_SIS_MODE); } void sis_write_driver_scratch(struct pqi_ctrl_info *ctrl_info, u32 value) |