From afd13a1f2b05157c7621d87dfe89ea6ea9061bd8 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Wed, 4 Jan 2012 01:32:39 -0800 Subject: [SCSI] isci: update afe (analog-front-end) recipe for C1 C1 silicon requires updates to the phy tuning recipe and also support for user provided cable selects (per-phy) for short, medium, and long cables. Default to 'short' awaiting support for selecting the cable via oem parameters. Reviewed-by: Jiangbi Liu Signed-off-by: Marcin Tomczak Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/host.c | 111 +++++++++++++++++++++++++++++++++-------- drivers/scsi/isci/host.h | 9 +++- drivers/scsi/isci/phy.c | 7 ++- drivers/scsi/isci/probe_roms.c | 2 +- 4 files changed, 103 insertions(+), 26 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 8e7de192cf6..383bb691308 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1908,12 +1908,23 @@ void sci_controller_power_control_queue_remove(struct isci_host *ihost, ihost->power_control.requesters[iphy->phy_index] = NULL; } +static int is_long_cable(int phy, unsigned char selection_byte) +{ + return 0; +} + +static int is_medium_cable(int phy, unsigned char selection_byte) +{ + return 0; +} + #define AFE_REGISTER_WRITE_DELAY 10 static void sci_controller_afe_initialization(struct isci_host *ihost) { struct scu_afe_registers __iomem *afe = &ihost->scu_registers->afe; const struct sci_oem_params *oem = &ihost->oem_parameters; + unsigned char cable_selection_mask = 0; struct pci_dev *pdev = ihost->pdev; u32 afe_status; u32 phy_id; @@ -1922,11 +1933,11 @@ static void sci_controller_afe_initialization(struct isci_host *ihost) writel(0x0081000f, &afe->afe_dfx_master_control0); udelay(AFE_REGISTER_WRITE_DELAY); - if (is_b0(pdev)) { + if (is_b0(pdev) || is_c0(pdev) || is_c1(pdev)) { /* PM Rx Equalization Save, PM SPhy Rx Acknowledgement * Timer, PM Stagger Timer */ - writel(0x0007BFFF, &afe->afe_pmsn_master_control2); + writel(0x0007FFFF, &afe->afe_pmsn_master_control2); udelay(AFE_REGISTER_WRITE_DELAY); } @@ -1935,14 +1946,23 @@ static void sci_controller_afe_initialization(struct isci_host *ihost) writel(0x00005A00, &afe->afe_bias_control); else if (is_b0(pdev) || is_c0(pdev)) writel(0x00005F00, &afe->afe_bias_control); + else if (is_c1(pdev)) + writel(0x00005500, &afe->afe_bias_control); udelay(AFE_REGISTER_WRITE_DELAY); /* Enable PLL */ - if (is_b0(pdev) || is_c0(pdev)) - writel(0x80040A08, &afe->afe_pll_control0); - else + if (is_a2(pdev)) writel(0x80040908, &afe->afe_pll_control0); + else if (is_b0(pdev) || is_c0(pdev)) + writel(0x80040A08, &afe->afe_pll_control0); + else if (is_c1(pdev)) { + writel(0x80000B08, &afe->afe_pll_control0); + udelay(AFE_REGISTER_WRITE_DELAY); + writel(0x00000B08, &afe->afe_pll_control0); + udelay(AFE_REGISTER_WRITE_DELAY); + writel(0x80000B08, &afe->afe_pll_control0); + } udelay(AFE_REGISTER_WRITE_DELAY); @@ -1963,46 +1983,68 @@ static void sci_controller_afe_initialization(struct isci_host *ihost) for (phy_id = 0; phy_id < SCI_MAX_PHYS; phy_id++) { struct scu_afe_transceiver *xcvr = &afe->scu_afe_xcvr[phy_id]; const struct sci_phy_oem_params *oem_phy = &oem->phys[phy_id]; + int cable_length_long = + is_long_cable(phy_id, cable_selection_mask); + int cable_length_medium = + is_medium_cable(phy_id, cable_selection_mask); + + if (is_a2(pdev)) { + /* All defaults, except the Receive Word + * Alignament/Comma Detect Enable....(0xe800) + */ + writel(0x00004512, &xcvr->afe_xcvr_control0); + udelay(AFE_REGISTER_WRITE_DELAY); - if (is_b0(pdev)) { - /* Configure transmitter SSC parameters */ + writel(0x0050100F, &xcvr->afe_xcvr_control1); + udelay(AFE_REGISTER_WRITE_DELAY); + } else if (is_b0(pdev)) { + /* Configure transmitter SSC parameters */ writel(0x00030000, &xcvr->afe_tx_ssc_control); udelay(AFE_REGISTER_WRITE_DELAY); } else if (is_c0(pdev)) { - /* Configure transmitter SSC parameters */ - writel(0x0003000, &xcvr->afe_tx_ssc_control); + /* Configure transmitter SSC parameters */ + writel(0x00010202, &xcvr->afe_tx_ssc_control); udelay(AFE_REGISTER_WRITE_DELAY); /* All defaults, except the Receive Word * Alignament/Comma Detect Enable....(0xe800) */ - writel(0x00004500, &xcvr->afe_xcvr_control0); + writel(0x00014500, &xcvr->afe_xcvr_control0); udelay(AFE_REGISTER_WRITE_DELAY); - } else { + } else if (is_c1(pdev)) { + /* Configure transmitter SSC parameters */ + writel(0x00010202, &xcvr->afe_tx_ssc_control); + udelay(AFE_REGISTER_WRITE_DELAY); + /* All defaults, except the Receive Word * Alignament/Comma Detect Enable....(0xe800) */ - writel(0x00004512, &xcvr->afe_xcvr_control0); - udelay(AFE_REGISTER_WRITE_DELAY); - - writel(0x0050100F, &xcvr->afe_xcvr_control1); + writel(0x0001C500, &xcvr->afe_xcvr_control0); udelay(AFE_REGISTER_WRITE_DELAY); } - /* Power up TX and RX out from power down (PWRDNTX and PWRDNRX) - * & increase TX int & ext bias 20%....(0xe85c) + /* Power up TX and RX out from power down (PWRDNTX and + * PWRDNRX) & increase TX int & ext bias 20%....(0xe85c) */ if (is_a2(pdev)) writel(0x000003F0, &xcvr->afe_channel_control); else if (is_b0(pdev)) { - /* Power down TX and RX (PWRDNTX and PWRDNRX) */ writel(0x000003D7, &xcvr->afe_channel_control); udelay(AFE_REGISTER_WRITE_DELAY); + writel(0x000003D4, &xcvr->afe_channel_control); - } else { + } else if (is_c0(pdev)) { writel(0x000001E7, &xcvr->afe_channel_control); udelay(AFE_REGISTER_WRITE_DELAY); + writel(0x000001E4, &xcvr->afe_channel_control); + } else if (is_c1(pdev)) { + writel(cable_length_long ? 0x000002F7 : 0x000001F7, + &xcvr->afe_channel_control); + udelay(AFE_REGISTER_WRITE_DELAY); + + writel(cable_length_long ? 0x000002F4 : 0x000001F4, + &xcvr->afe_channel_control); } udelay(AFE_REGISTER_WRITE_DELAY); @@ -2012,7 +2054,16 @@ static void sci_controller_afe_initialization(struct isci_host *ihost) udelay(AFE_REGISTER_WRITE_DELAY); } - writel(0x00004100, &xcvr->afe_xcvr_control0); + if (is_a2(pdev) || is_b0(pdev)) + /* RDPI=0x0(RX Power On), RXOOBDETPDNC=0x0, + * TPD=0x0(TX Power On), RDD=0x0(RX Detect + * Enabled) ....(0xe800) + */ + writel(0x00004100, &xcvr->afe_xcvr_control0); + else if (is_c0(pdev)) + writel(0x00014100, &xcvr->afe_xcvr_control0); + else if (is_c1(pdev)) + writel(0x0001C100, &xcvr->afe_xcvr_control0); udelay(AFE_REGISTER_WRITE_DELAY); /* Leave DFE/FFE on */ @@ -2023,13 +2074,29 @@ static void sci_controller_afe_initialization(struct isci_host *ihost) udelay(AFE_REGISTER_WRITE_DELAY); /* Enable TX equalization (0xe824) */ writel(0x00040000, &xcvr->afe_tx_control); - } else { - writel(0x0140DF0F, &xcvr->afe_rx_ssc_control1); + } else if (is_c0(pdev)) { + writel(0x01400C0F, &xcvr->afe_rx_ssc_control1); udelay(AFE_REGISTER_WRITE_DELAY); writel(0x3F6F103F, &xcvr->afe_rx_ssc_control0); udelay(AFE_REGISTER_WRITE_DELAY); + /* Enable TX equalization (0xe824) */ + writel(0x00040000, &xcvr->afe_tx_control); + } else if (is_c1(pdev)) { + writel(cable_length_long ? 0x01500C0C : + cable_length_medium ? 0x01400C0D : 0x02400C0D, + &xcvr->afe_xcvr_control1); + udelay(AFE_REGISTER_WRITE_DELAY); + + writel(0x000003E0, &xcvr->afe_dfx_rx_control1); + udelay(AFE_REGISTER_WRITE_DELAY); + + writel(cable_length_long ? 0x33091C1F : + cable_length_medium ? 0x3315181F : 0x2B17161F, + &xcvr->afe_rx_ssc_control0); + udelay(AFE_REGISTER_WRITE_DELAY); + /* Enable TX equalization (0xe824) */ writel(0x00040000, &xcvr->afe_tx_control); } diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 646051afd3c..4573075a6b9 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -435,7 +435,14 @@ static inline bool is_b0(struct pci_dev *pdev) static inline bool is_c0(struct pci_dev *pdev) { - if (pdev->revision >= 5) + if (pdev->revision == 5) + return true; + return false; +} + +static inline bool is_c1(struct pci_dev *pdev) +{ + if (pdev->revision >= 6) return true; return false; } diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 0ae0990b39d..c650d3003c2 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -186,8 +186,11 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, writel(clksm_value, &llr->clock_skew_management); - /* @todo Provide a way to write this register correctly */ - writel(0x02108421, &llr->afe_lookup_table_control); + if (is_c0(ihost->pdev) || is_c1(ihost->pdev)) { + writel(0x04210400, &llr->afe_lookup_table_control); + writel(0x020A7C05, &llr->sas_primitive_timeout); + } else + 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); diff --git a/drivers/scsi/isci/probe_roms.c b/drivers/scsi/isci/probe_roms.c index b5f4341de24..9b8117b9d75 100644 --- a/drivers/scsi/isci/probe_roms.c +++ b/drivers/scsi/isci/probe_roms.c @@ -147,7 +147,7 @@ struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmw memcpy(orom, fw->data, fw->size); - if (is_c0(pdev)) + if (is_c0(pdev) || is_c1(pdev)) goto out; /* -- cgit v1.2.3