diff options
author | Dan Williams <dan.j.williams@intel.com> | 2012-01-04 01:32:34 -0800 |
---|---|---|
committer | James Bottomley <JBottomley@Parallels.com> | 2012-01-16 11:39:52 +0400 |
commit | 2e5da889d44a3a9629f895de3488306e7f5ddf16 (patch) | |
tree | e7af1c412c85dcdb28023fca51f6089ff31474b5 /drivers/scsi/isci/phy.c | |
parent | 7d99b3abaf8412932269a2a2e561138326d61f8b (diff) |
[SCSI] isci: cleanup oem parameter and recipe handling
Before updating the code to support the latest platform updates and
silicon revision cleanup some of the long deref chains.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/isci/phy.c')
-rw-r--r-- | drivers/scsi/isci/phy.c | 81 |
1 files changed, 39 insertions, 42 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 35f50c2183e..0ae0990b39d 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -91,22 +91,23 @@ sci_phy_transport_layer_initialization(struct isci_phy *iphy, static enum sci_status sci_phy_link_layer_initialization(struct isci_phy *iphy, - struct scu_link_layer_registers __iomem *reg) + struct scu_link_layer_registers __iomem *llr) { struct isci_host *ihost = iphy->owning_port->owning_controller; + struct sci_phy_user_params *phy_user; + struct sci_phy_oem_params *phy_oem; int phy_idx = iphy->phy_index; - struct sci_phy_user_params *phy_user = &ihost->user_parameters.phys[phy_idx]; - struct sci_phy_oem_params *phy_oem = - &ihost->oem_parameters.phys[phy_idx]; - u32 phy_configuration; struct sci_phy_cap phy_cap; + u32 phy_configuration; u32 parity_check = 0; u32 parity_count = 0; u32 llctl, link_rate; u32 clksm_value = 0; u32 sp_timeouts = 0; - iphy->link_layer_registers = reg; + phy_user = &ihost->user_parameters.phys[phy_idx]; + phy_oem = &ihost->oem_parameters.phys[phy_idx]; + iphy->link_layer_registers = llr; /* Set our IDENTIFY frame data */ #define SCI_END_DEVICE 0x01 @@ -116,32 +117,26 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, SCU_SAS_TIID_GEN_BIT(STP_INITIATOR) | SCU_SAS_TIID_GEN_BIT(DA_SATA_HOST) | SCU_SAS_TIID_GEN_VAL(DEVICE_TYPE, SCI_END_DEVICE), - &iphy->link_layer_registers->transmit_identification); + &llr->transmit_identification); /* Write the device SAS Address */ - writel(0xFEDCBA98, - &iphy->link_layer_registers->sas_device_name_high); - writel(phy_idx, &iphy->link_layer_registers->sas_device_name_low); + writel(0xFEDCBA98, &llr->sas_device_name_high); + writel(phy_idx, &llr->sas_device_name_low); /* Write the source SAS Address */ - writel(phy_oem->sas_address.high, - &iphy->link_layer_registers->source_sas_address_high); - writel(phy_oem->sas_address.low, - &iphy->link_layer_registers->source_sas_address_low); + writel(phy_oem->sas_address.high, &llr->source_sas_address_high); + writel(phy_oem->sas_address.low, &llr->source_sas_address_low); /* Clear and Set the PHY Identifier */ - writel(0, &iphy->link_layer_registers->identify_frame_phy_id); - writel(SCU_SAS_TIPID_GEN_VALUE(ID, phy_idx), - &iphy->link_layer_registers->identify_frame_phy_id); + writel(0, &llr->identify_frame_phy_id); + writel(SCU_SAS_TIPID_GEN_VALUE(ID, phy_idx), &llr->identify_frame_phy_id); /* Change the initial state of the phy configuration register */ - phy_configuration = - readl(&iphy->link_layer_registers->phy_configuration); + phy_configuration = readl(&llr->phy_configuration); /* Hold OOB state machine in reset */ phy_configuration |= SCU_SAS_PCFG_GEN_BIT(OOB_RESET); - writel(phy_configuration, - &iphy->link_layer_registers->phy_configuration); + writel(phy_configuration, &llr->phy_configuration); /* Configure the SNW capabilities */ phy_cap.all = 0; @@ -155,9 +150,9 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, phy_cap.gen1_ssc = 1; } - /* - * The SAS specification indicates that the phy_capabilities that - * are transmitted shall have an even parity. Calculate the parity. */ + /* The SAS specification indicates that the phy_capabilities that + * are transmitted shall have an even parity. Calculate the parity. + */ parity_check = phy_cap.all; while (parity_check != 0) { if (parity_check & 0x1) @@ -165,20 +160,20 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, parity_check >>= 1; } - /* - * If parity indicates there are an odd number of bits set, then - * set the parity bit to 1 in the phy capabilities. */ + /* If parity indicates there are an odd number of bits set, then + * set the parity bit to 1 in the phy capabilities. + */ if ((parity_count % 2) != 0) phy_cap.parity = 1; - writel(phy_cap.all, &iphy->link_layer_registers->phy_capabilities); + writel(phy_cap.all, &llr->phy_capabilities); /* Set the enable spinup period but disable the ability to send * notify enable spinup */ writel(SCU_ENSPINUP_GEN_VAL(COUNT, phy_user->notify_enable_spin_up_insertion_frequency), - &iphy->link_layer_registers->notify_enable_spinup_control); + &llr->notify_enable_spinup_control); /* Write the ALIGN Insertion Ferequency for connected phy and * inpendent of connected state @@ -189,11 +184,10 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, clksm_value |= SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(GENERAL, phy_user->align_insertion_frequency); - writel(clksm_value, &iphy->link_layer_registers->clock_skew_management); + writel(clksm_value, &llr->clock_skew_management); /* @todo Provide a way to write this register correctly */ - writel(0x02108421, - &iphy->link_layer_registers->afe_lookup_table_control); + writel(0x02108421, &llr->afe_lookup_table_control); llctl = SCU_SAS_LLCTL_GEN_VAL(NO_OUTBOUND_TASK_TIMEOUT, (u8)ihost->user_parameters.no_outbound_task_timeout); @@ -210,9 +204,9 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, break; } llctl |= SCU_SAS_LLCTL_GEN_VAL(MAX_LINK_RATE, link_rate); - writel(llctl, &iphy->link_layer_registers->link_layer_control); + writel(llctl, &llr->link_layer_control); - sp_timeouts = readl(&iphy->link_layer_registers->sas_phy_timeouts); + sp_timeouts = readl(&llr->sas_phy_timeouts); /* Clear the default 0x36 (54us) RATE_CHANGE timeout value. */ sp_timeouts &= ~SCU_SAS_PHYTOV_GEN_VAL(RATE_CHANGE, 0xFF); @@ -222,20 +216,23 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, */ sp_timeouts |= SCU_SAS_PHYTOV_GEN_VAL(RATE_CHANGE, 0x3B); - writel(sp_timeouts, &iphy->link_layer_registers->sas_phy_timeouts); + writel(sp_timeouts, &llr->sas_phy_timeouts); if (is_a2(ihost->pdev)) { - /* Program the max ARB time for the PHY to 700us so we inter-operate with - * the PMC expander which shuts down PHYs if the expander PHY generates too - * many breaks. This time value will guarantee that the initiator PHY will - * generate the break. + /* Program the max ARB time for the PHY to 700us so we + * inter-operate with the PMC expander which shuts down + * PHYs if the expander PHY generates too many breaks. + * This time value will guarantee that the initiator PHY + * will generate the break. */ writel(SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME, - &iphy->link_layer_registers->maximum_arbitration_wait_timer_timeout); + &llr->maximum_arbitration_wait_timer_timeout); } - /* Disable link layer hang detection, rely on the OS timeout for I/O timeouts. */ - writel(0, &iphy->link_layer_registers->link_layer_hang_detection_timeout); + /* Disable link layer hang detection, rely on the OS timeout for + * I/O timeouts. + */ + writel(0, &llr->link_layer_hang_detection_timeout); /* We can exit the initial state to the stopped state */ sci_change_state(&iphy->sm, SCI_PHY_STOPPED); |