From 7d99b3abaf8412932269a2a2e561138326d61f8b Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 4 Jan 2012 01:32:28 -0800 Subject: [SCSI] isci, firmware: Remove isci fallback parameter blob and generator This parameter blob and generator program have been moved to the linux-firmware.git repository. Signed-off-by: Ben Hutchings Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/firmware/Makefile | 19 ------- drivers/scsi/isci/firmware/README | 36 ------------- drivers/scsi/isci/firmware/create_fw.c | 99 ---------------------------------- drivers/scsi/isci/firmware/create_fw.h | 77 -------------------------- 4 files changed, 231 deletions(-) delete mode 100644 drivers/scsi/isci/firmware/Makefile delete mode 100644 drivers/scsi/isci/firmware/README delete mode 100644 drivers/scsi/isci/firmware/create_fw.c delete mode 100644 drivers/scsi/isci/firmware/create_fw.h (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/firmware/Makefile b/drivers/scsi/isci/firmware/Makefile deleted file mode 100644 index 5f54461cabc5..000000000000 --- a/drivers/scsi/isci/firmware/Makefile +++ /dev/null @@ -1,19 +0,0 @@ -# Makefile for create_fw -# -CC=gcc -CFLAGS=-c -Wall -O2 -g -LDFLAGS= -SOURCES=create_fw.c -OBJECTS=$(SOURCES:.cpp=.o) -EXECUTABLE=create_fw - -all: $(SOURCES) $(EXECUTABLE) - -$(EXECUTABLE): $(OBJECTS) - $(CC) $(LDFLAGS) $(OBJECTS) -o $@ - -.c.o: - $(CC) $(CFLAGS) $< -O $@ - -clean: - rm -f *.o $(EXECUTABLE) diff --git a/drivers/scsi/isci/firmware/README b/drivers/scsi/isci/firmware/README deleted file mode 100644 index 8056d2bd233b..000000000000 --- a/drivers/scsi/isci/firmware/README +++ /dev/null @@ -1,36 +0,0 @@ -This defines the temporary binary blow we are to pass to the SCU -driver to emulate the binary firmware that we will eventually be -able to access via NVRAM on the SCU controller. - -The current size of the binary blob is expected to be 149 bytes or larger - -Header Types: -0x1: Phy Masks -0x2: Phy Gens -0x3: SAS Addrs -0xff: End of Data - -ID string - u8[12]: "#SCU MAGIC#\0" -Version - u8: 1 -SubVersion - u8: 0 - -Header Type - u8: 0x1 -Size - u8: 8 -Phy Mask - u32[8] - -Header Type - u8: 0x2 -Size - u8: 8 -Phy Gen - u32[8] - -Header Type - u8: 0x3 -Size - u8: 8 -Sas Addr - u64[8] - -Header Type - u8: 0xf - - -============================================================================== - -Place isci_firmware.bin in /lib/firmware -Be sure to recreate the initramfs image to include the firmware. - diff --git a/drivers/scsi/isci/firmware/create_fw.c b/drivers/scsi/isci/firmware/create_fw.c deleted file mode 100644 index c7a2887a7e95..000000000000 --- a/drivers/scsi/isci/firmware/create_fw.c +++ /dev/null @@ -1,99 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "create_fw.h" -#include "../probe_roms.h" - -int write_blob(struct isci_orom *isci_orom) -{ - FILE *fd; - int err; - size_t count; - - fd = fopen(blob_name, "w+"); - if (!fd) { - perror("Open file for write failed"); - fclose(fd); - return -EIO; - } - - count = fwrite(isci_orom, sizeof(struct isci_orom), 1, fd); - if (count != 1) { - perror("Write data failed"); - fclose(fd); - return -EIO; - } - - fclose(fd); - - return 0; -} - -void set_binary_values(struct isci_orom *isci_orom) -{ - int ctrl_idx, phy_idx, port_idx; - - /* setting OROM signature */ - strncpy(isci_orom->hdr.signature, sig, strlen(sig)); - isci_orom->hdr.version = version; - isci_orom->hdr.total_block_length = sizeof(struct isci_orom); - isci_orom->hdr.hdr_length = sizeof(struct sci_bios_oem_param_block_hdr); - isci_orom->hdr.num_elements = num_elements; - - for (ctrl_idx = 0; ctrl_idx < 2; ctrl_idx++) { - isci_orom->ctrl[ctrl_idx].controller.mode_type = mode_type; - isci_orom->ctrl[ctrl_idx].controller.max_concurrent_dev_spin_up = - max_num_concurrent_dev_spin_up; - isci_orom->ctrl[ctrl_idx].controller.do_enable_ssc = - enable_ssc; - - for (port_idx = 0; port_idx < 4; port_idx++) - isci_orom->ctrl[ctrl_idx].ports[port_idx].phy_mask = - phy_mask[ctrl_idx][port_idx]; - - for (phy_idx = 0; phy_idx < 4; phy_idx++) { - isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.high = - (__u32)(sas_addr[ctrl_idx][phy_idx] >> 32); - isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.low = - (__u32)(sas_addr[ctrl_idx][phy_idx]); - - isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control0 = - afe_tx_amp_control0; - isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control1 = - afe_tx_amp_control1; - isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control2 = - afe_tx_amp_control2; - isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control3 = - afe_tx_amp_control3; - } - } -} - -int main(void) -{ - int err; - struct isci_orom *isci_orom; - - isci_orom = malloc(sizeof(struct isci_orom)); - memset(isci_orom, 0, sizeof(struct isci_orom)); - - set_binary_values(isci_orom); - - err = write_blob(isci_orom); - if (err < 0) { - free(isci_orom); - return err; - } - - free(isci_orom); - return 0; -} diff --git a/drivers/scsi/isci/firmware/create_fw.h b/drivers/scsi/isci/firmware/create_fw.h deleted file mode 100644 index 5f298828d22e..000000000000 --- a/drivers/scsi/isci/firmware/create_fw.h +++ /dev/null @@ -1,77 +0,0 @@ -#ifndef _CREATE_FW_H_ -#define _CREATE_FW_H_ -#include "../probe_roms.h" - - -/* we are configuring for 2 SCUs */ -static const int num_elements = 2; - -/* - * For all defined arrays: - * elements 0-3 are for SCU0, ports 0-3 - * elements 4-7 are for SCU1, ports 0-3 - * - * valid configurations for one SCU are: - * P0 P1 P2 P3 - * ---------------- - * 0xF,0x0,0x0,0x0 # 1 x4 port - * 0x3,0x0,0x4,0x8 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are each x1 - * # ports - * 0x1,0x2,0xC,0x0 # Phys 0 and 1 are each x1 ports, phy 2 and phy 3 are a x2 - * # port - * 0x3,0x0,0xC,0x0 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are a x2 port - * 0x1,0x2,0x4,0x8 # Each phy is a x1 port (this is the default configuration) - * - * if there is a port/phy on which you do not wish to override the default - * values, use the value assigned to UNINIT_PARAM (255). - */ - -/* discovery mode type (port auto config mode by default ) */ - -/* - * if there is a port/phy on which you do not wish to override the default - * values, use the value "0000000000000000". SAS address of zero's is - * considered invalid and will not be used. - */ -#ifdef MPC -static const int mode_type = SCIC_PORT_MANUAL_CONFIGURATION_MODE; -static const __u8 phy_mask[2][4] = { {1, 2, 4, 8}, - {1, 2, 4, 8} }; -static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFFF0000001ULL, - 0x5FCFFFFFF0000002ULL, - 0x5FCFFFFFF0000003ULL, - 0x5FCFFFFFF0000004ULL }, - { 0x5FCFFFFFF0000005ULL, - 0x5FCFFFFFF0000006ULL, - 0x5FCFFFFFF0000007ULL, - 0x5FCFFFFFF0000008ULL } }; -#else /* APC (default) */ -static const int mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; -static const __u8 phy_mask[2][4]; -static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFF00000001ULL, - 0x5FCFFFFF00000001ULL, - 0x5FCFFFFF00000001ULL, - 0x5FCFFFFF00000001ULL }, - { 0x5FCFFFFF00000002ULL, - 0x5FCFFFFF00000002ULL, - 0x5FCFFFFF00000002ULL, - 0x5FCFFFFF00000002ULL } }; -#endif - -/* Maximum number of concurrent device spin up */ -static const int max_num_concurrent_dev_spin_up = 1; - -/* enable of ssc operation */ -static const int enable_ssc; - -/* AFE_TX_AMP_CONTROL */ -static const unsigned int afe_tx_amp_control0 = 0x000bdd08; -static const unsigned int afe_tx_amp_control1 = 0x000ffc00; -static const unsigned int afe_tx_amp_control2 = 0x000b7c09; -static const unsigned int afe_tx_amp_control3 = 0x000afc6e; - -static const char blob_name[] = "isci_firmware.bin"; -static const char sig[] = "ISCUOEMB"; -static const unsigned char version = 0x10; - -#endif -- cgit v1.2.3 From 2e5da889d44a3a9629f895de3488306e7f5ddf16 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 4 Jan 2012 01:32:34 -0800 Subject: [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 Signed-off-by: James Bottomley --- drivers/scsi/isci/host.c | 107 +++++++++++++++++++++-------------------------- drivers/scsi/isci/phy.c | 81 +++++++++++++++++------------------ 2 files changed, 86 insertions(+), 102 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index e7fe9c4c85b8..8e7de192cf6d 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1910,160 +1910,147 @@ void sci_controller_power_control_queue_remove(struct isci_host *ihost, #define AFE_REGISTER_WRITE_DELAY 10 -/* Initialize the AFE for this phy index. We need to read the AFE setup from - * the OEM parameters - */ 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; struct pci_dev *pdev = ihost->pdev; u32 afe_status; u32 phy_id; /* Clear DFX Status registers */ - writel(0x0081000f, &ihost->scu_registers->afe.afe_dfx_master_control0); + writel(0x0081000f, &afe->afe_dfx_master_control0); udelay(AFE_REGISTER_WRITE_DELAY); if (is_b0(pdev)) { /* PM Rx Equalization Save, PM SPhy Rx Acknowledgement - * Timer, PM Stagger Timer */ - writel(0x0007BFFF, &ihost->scu_registers->afe.afe_pmsn_master_control2); + * Timer, PM Stagger Timer + */ + writel(0x0007BFFF, &afe->afe_pmsn_master_control2); udelay(AFE_REGISTER_WRITE_DELAY); } /* Configure bias currents to normal */ if (is_a2(pdev)) - writel(0x00005A00, &ihost->scu_registers->afe.afe_bias_control); + writel(0x00005A00, &afe->afe_bias_control); else if (is_b0(pdev) || is_c0(pdev)) - writel(0x00005F00, &ihost->scu_registers->afe.afe_bias_control); + writel(0x00005F00, &afe->afe_bias_control); udelay(AFE_REGISTER_WRITE_DELAY); /* Enable PLL */ if (is_b0(pdev) || is_c0(pdev)) - writel(0x80040A08, &ihost->scu_registers->afe.afe_pll_control0); + writel(0x80040A08, &afe->afe_pll_control0); else - writel(0x80040908, &ihost->scu_registers->afe.afe_pll_control0); + writel(0x80040908, &afe->afe_pll_control0); udelay(AFE_REGISTER_WRITE_DELAY); /* Wait for the PLL to lock */ do { - afe_status = readl(&ihost->scu_registers->afe.afe_common_block_status); + afe_status = readl(&afe->afe_common_block_status); udelay(AFE_REGISTER_WRITE_DELAY); } while ((afe_status & 0x00001000) == 0); if (is_a2(pdev)) { - /* Shorten SAS SNW lock time (RxLock timer value from 76 us to 50 us) */ - writel(0x7bcc96ad, &ihost->scu_registers->afe.afe_pmsn_master_control0); + /* Shorten SAS SNW lock time (RxLock timer value from 76 + * us to 50 us) + */ + writel(0x7bcc96ad, &afe->afe_pmsn_master_control0); udelay(AFE_REGISTER_WRITE_DELAY); } 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]; if (is_b0(pdev)) { /* Configure transmitter SSC parameters */ - writel(0x00030000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control); + writel(0x00030000, &xcvr->afe_tx_ssc_control); udelay(AFE_REGISTER_WRITE_DELAY); } else if (is_c0(pdev)) { /* Configure transmitter SSC parameters */ - writel(0x0003000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control); + writel(0x0003000, &xcvr->afe_tx_ssc_control); udelay(AFE_REGISTER_WRITE_DELAY); - /* - * All defaults, except the Receive Word Alignament/Comma Detect - * Enable....(0xe800) */ - writel(0x00004500, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0); + /* All defaults, except the Receive Word + * Alignament/Comma Detect Enable....(0xe800) + */ + writel(0x00004500, &xcvr->afe_xcvr_control0); udelay(AFE_REGISTER_WRITE_DELAY); } else { - /* - * All defaults, except the Receive Word Alignament/Comma Detect - * Enable....(0xe800) */ - writel(0x00004512, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0); + /* All defaults, except the Receive Word + * Alignament/Comma Detect Enable....(0xe800) + */ + writel(0x00004512, &xcvr->afe_xcvr_control0); udelay(AFE_REGISTER_WRITE_DELAY); - writel(0x0050100F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control1); + writel(0x0050100F, &xcvr->afe_xcvr_control1); 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, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control); + writel(0x000003F0, &xcvr->afe_channel_control); else if (is_b0(pdev)) { /* Power down TX and RX (PWRDNTX and PWRDNRX) */ - writel(0x000003D7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control); + writel(0x000003D7, &xcvr->afe_channel_control); udelay(AFE_REGISTER_WRITE_DELAY); - - /* - * Power up TX and RX out from power down (PWRDNTX and PWRDNRX) - * & increase TX int & ext bias 20%....(0xe85c) */ - writel(0x000003D4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control); + writel(0x000003D4, &xcvr->afe_channel_control); } else { - writel(0x000001E7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control); + writel(0x000001E7, &xcvr->afe_channel_control); udelay(AFE_REGISTER_WRITE_DELAY); - - /* - * Power up TX and RX out from power down (PWRDNTX and PWRDNRX) - * & increase TX int & ext bias 20%....(0xe85c) */ - writel(0x000001E4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control); + writel(0x000001E4, &xcvr->afe_channel_control); } udelay(AFE_REGISTER_WRITE_DELAY); if (is_a2(pdev)) { /* Enable TX equalization (0xe824) */ - writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control); + writel(0x00040000, &xcvr->afe_tx_control); udelay(AFE_REGISTER_WRITE_DELAY); } - /* - * RDPI=0x0(RX Power On), RXOOBDETPDNC=0x0, TPD=0x0(TX Power On), - * RDD=0x0(RX Detect Enabled) ....(0xe800) */ - writel(0x00004100, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0); + writel(0x00004100, &xcvr->afe_xcvr_control0); udelay(AFE_REGISTER_WRITE_DELAY); /* Leave DFE/FFE on */ if (is_a2(pdev)) - writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0); + writel(0x3F11103F, &xcvr->afe_rx_ssc_control0); else if (is_b0(pdev)) { - writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0); + writel(0x3F11103F, &xcvr->afe_rx_ssc_control0); udelay(AFE_REGISTER_WRITE_DELAY); /* Enable TX equalization (0xe824) */ - writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control); + writel(0x00040000, &xcvr->afe_tx_control); } else { - writel(0x0140DF0F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control1); + writel(0x0140DF0F, &xcvr->afe_rx_ssc_control1); udelay(AFE_REGISTER_WRITE_DELAY); - writel(0x3F6F103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0); + writel(0x3F6F103F, &xcvr->afe_rx_ssc_control0); udelay(AFE_REGISTER_WRITE_DELAY); /* Enable TX equalization (0xe824) */ - writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control); + writel(0x00040000, &xcvr->afe_tx_control); } udelay(AFE_REGISTER_WRITE_DELAY); - writel(oem_phy->afe_tx_amp_control0, - &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control0); + writel(oem_phy->afe_tx_amp_control0, &xcvr->afe_tx_amp_control0); udelay(AFE_REGISTER_WRITE_DELAY); - writel(oem_phy->afe_tx_amp_control1, - &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control1); + writel(oem_phy->afe_tx_amp_control1, &xcvr->afe_tx_amp_control1); udelay(AFE_REGISTER_WRITE_DELAY); - writel(oem_phy->afe_tx_amp_control2, - &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control2); + writel(oem_phy->afe_tx_amp_control2, &xcvr->afe_tx_amp_control2); udelay(AFE_REGISTER_WRITE_DELAY); - writel(oem_phy->afe_tx_amp_control3, - &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control3); + writel(oem_phy->afe_tx_amp_control3, &xcvr->afe_tx_amp_control3); udelay(AFE_REGISTER_WRITE_DELAY); } /* Transfer control to the PEs */ - writel(0x00010f00, &ihost->scu_registers->afe.afe_dfx_master_control0); + writel(0x00010f00, &afe->afe_dfx_master_control0); udelay(AFE_REGISTER_WRITE_DELAY); } diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 35f50c2183e1..0ae0990b39dd 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); -- cgit v1.2.3 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(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 8e7de192cf6d..383bb6913087 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 646051afd3cb..4573075a6b97 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 0ae0990b39dd..c650d3003c22 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 b5f4341de243..9b8117b9d756 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 From 594e566ae5985e0cc3185ac21509a86e90aad577 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Wed, 4 Jan 2012 01:32:44 -0800 Subject: [SCSI] isci: oem parameter format v1.1 (ssc select) v1.1 allows finer grained tuning of the SSC (spread-spectrum-clocking) settings for SAS and SATA. See notes in probe_roms.h Signed-off-by: Dave Jiang Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/host.c | 47 +++++++++++++++++++++++++++++++++++-- drivers/scsi/isci/init.c | 3 ++- drivers/scsi/isci/phy.c | 51 +++++++++++++++++++++++++++++++++++++++- drivers/scsi/isci/probe_roms.h | 53 ++++++++++++++++++++++++++++++++++++++++-- 4 files changed, 148 insertions(+), 6 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 383bb6913087..ed1441c89577 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1759,7 +1759,7 @@ static enum sci_status sci_controller_construct(struct isci_host *ihost, return sci_controller_reset(ihost); } -int sci_oem_parameters_validate(struct sci_oem_params *oem) +int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version) { int i; @@ -1791,18 +1791,61 @@ int sci_oem_parameters_validate(struct sci_oem_params *oem) oem->controller.max_concurr_spin_up < 1) return -EINVAL; + if (oem->controller.do_enable_ssc) { + if (version < ISCI_ROM_VER_1_1 && oem->controller.do_enable_ssc != 1) + return -EINVAL; + + if (version >= ISCI_ROM_VER_1_1) { + u8 test = oem->controller.ssc_sata_tx_spread_level; + + switch (test) { + case 0: + case 2: + case 3: + case 6: + case 7: + break; + default: + return -EINVAL; + } + + test = oem->controller.ssc_sas_tx_spread_level; + if (oem->controller.ssc_sas_tx_type == 0) { + switch (test) { + case 0: + case 2: + case 3: + break; + default: + return -EINVAL; + } + } else if (oem->controller.ssc_sas_tx_type == 1) { + switch (test) { + case 0: + case 3: + case 6: + break; + default: + return -EINVAL; + } + } + } + } + return 0; } static enum sci_status sci_oem_parameters_set(struct isci_host *ihost) { u32 state = ihost->sm.current_state_id; + struct isci_pci_info *pci_info = to_pci_info(ihost->pdev); if (state == SCIC_RESET || state == SCIC_INITIALIZING || state == SCIC_INITIALIZED) { - if (sci_oem_parameters_validate(&ihost->oem_parameters)) + if (sci_oem_parameters_validate(&ihost->oem_parameters, + pci_info->orom->hdr.version)) return SCI_FAILURE_INVALID_PARAMETER_VALUE; return SCI_SUCCESS; diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index a97edabcb85a..8a34fd92e42e 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -466,7 +466,8 @@ static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_devic orom = isci_request_oprom(pdev); for (i = 0; orom && i < ARRAY_SIZE(orom->ctrl); i++) { - if (sci_oem_parameters_validate(&orom->ctrl[i])) { + if (sci_oem_parameters_validate(&orom->ctrl[i], + orom->hdr.version)) { dev_warn(&pdev->dev, "[%d]: invalid oem parameters detected, falling back to firmware\n", i); devm_kfree(&pdev->dev, orom); diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index c650d3003c22..61000cde84c7 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -144,10 +144,59 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, phy_cap.gen3_no_ssc = 1; phy_cap.gen2_no_ssc = 1; phy_cap.gen1_no_ssc = 1; - if (ihost->oem_parameters.controller.do_enable_ssc == true) { + if (ihost->oem_parameters.controller.do_enable_ssc) { + struct scu_afe_registers __iomem *afe = &ihost->scu_registers->afe; + struct scu_afe_transceiver *xcvr = &afe->scu_afe_xcvr[phy_idx]; + struct isci_pci_info *pci_info = to_pci_info(ihost->pdev); + bool en_sas = false; + bool en_sata = false; + u32 sas_type = 0; + u32 sata_spread = 0x2; + u32 sas_spread = 0x2; + phy_cap.gen3_ssc = 1; phy_cap.gen2_ssc = 1; phy_cap.gen1_ssc = 1; + + if (pci_info->orom->hdr.version < ISCI_ROM_VER_1_1) + en_sas = en_sata = true; + else { + sata_spread = ihost->oem_parameters.controller.ssc_sata_tx_spread_level; + sas_spread = ihost->oem_parameters.controller.ssc_sas_tx_spread_level; + + if (sata_spread) + en_sata = true; + + if (sas_spread) { + en_sas = true; + sas_type = ihost->oem_parameters.controller.ssc_sas_tx_type; + } + + } + + if (en_sas) { + u32 reg; + + reg = readl(&xcvr->afe_xcvr_control0); + reg |= (0x00100000 | (sas_type << 19)); + writel(reg, &xcvr->afe_xcvr_control0); + + reg = readl(&xcvr->afe_tx_ssc_control); + reg |= sas_spread << 8; + writel(reg, &xcvr->afe_tx_ssc_control); + } + + if (en_sata) { + u32 reg; + + reg = readl(&xcvr->afe_tx_ssc_control); + reg |= sata_spread; + writel(reg, &xcvr->afe_tx_ssc_control); + + reg = readl(&llr->stp_control); + reg |= 1 << 12; + writel(reg, &llr->stp_control); + } } /* The SAS specification indicates that the phy_capabilities that diff --git a/drivers/scsi/isci/probe_roms.h b/drivers/scsi/isci/probe_roms.h index 2c75248ca326..42dd05414f3b 100644 --- a/drivers/scsi/isci/probe_roms.h +++ b/drivers/scsi/isci/probe_roms.h @@ -152,7 +152,7 @@ struct sci_user_parameters { #define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4 struct sci_oem_params; -int sci_oem_parameters_validate(struct sci_oem_params *oem); +int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version); struct isci_orom; struct isci_orom *isci_request_oprom(struct pci_dev *pdev); @@ -191,6 +191,10 @@ struct isci_oem_hdr { 0x1a, 0x04, 0xc6) #define ISCI_EFI_VAR_NAME "RstScuO" +#define ISCI_ROM_VER_1_0 0x10 +#define ISCI_ROM_VER_1_1 0x11 +#define ISCI_ROM_VER_LATEST ISCI_ROM_VER_1_1 + /* Allowed PORT configuration modes APC Automatic PORT configuration mode is * defined by the OEM configuration parameters providing no PHY_MASK parameters * for any PORT. i.e. There are no phys assigned to any of the ports at start. @@ -220,7 +224,52 @@ struct sci_oem_params { struct { uint8_t mode_type; uint8_t max_concurr_spin_up; - uint8_t do_enable_ssc; + /* + * This bitfield indicates the OEM's desired default Tx + * Spread Spectrum Clocking (SSC) settings for SATA and SAS. + * NOTE: Default SSC Modulation Frequency is 31.5KHz. + */ + union { + struct { + /* + * NOTE: Max spread for SATA is +0 / -5000 PPM. + * Down-spreading SSC (only method allowed for SATA): + * SATA SSC Tx Disabled = 0x0 + * SATA SSC Tx at +0 / -1419 PPM Spread = 0x2 + * SATA SSC Tx at +0 / -2129 PPM Spread = 0x3 + * SATA SSC Tx at +0 / -4257 PPM Spread = 0x6 + * SATA SSC Tx at +0 / -4967 PPM Spread = 0x7 + */ + uint8_t ssc_sata_tx_spread_level:4; + /* + * SAS SSC Tx Disabled = 0x0 + * + * NOTE: Max spread for SAS down-spreading +0 / + * -2300 PPM + * Down-spreading SSC: + * SAS SSC Tx at +0 / -1419 PPM Spread = 0x2 + * SAS SSC Tx at +0 / -2129 PPM Spread = 0x3 + * + * NOTE: Max spread for SAS center-spreading +2300 / + * -2300 PPM + * Center-spreading SSC: + * SAS SSC Tx at +1064 / -1064 PPM Spread = 0x3 + * SAS SSC Tx at +2129 / -2129 PPM Spread = 0x6 + */ + uint8_t ssc_sas_tx_spread_level:3; + /* + * NOTE: Refer to the SSC section of the SAS 2.x + * Specification for proper setting of this field. + * For standard SAS Initiator SAS PHY operation it + * should be 0 for Down-spreading. + * SAS SSC Tx spread type: + * Down-spreading SSC = 0 + * Center-spreading SSC = 1 + */ + uint8_t ssc_sas_tx_type:1; + }; + uint8_t do_enable_ssc; + }; uint8_t reserved; } controller; -- cgit v1.2.3 From 9fee607f0b29adabd72265a847b8e421dff10d66 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Wed, 4 Jan 2012 01:32:49 -0800 Subject: [SCSI] isci: oem parameter format v1.3 (cable select) v1.3 allows the attenuation of the attached cables to be specified to the driver in terms of 'short', 'medium', and 'long' (see probe_roms.h). These settings (per phy) are retrieved from the platform oem-parameters (BIOS rom) or via a module parameter override. Reviewed-by: Jiangbi Liu Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/host.c | 43 +++++++++++++++++++++++++++++++++++++++--- drivers/scsi/isci/host.h | 18 ++++++++++++++++++ drivers/scsi/isci/init.c | 16 ++++++++++++++++ drivers/scsi/isci/isci.h | 1 + drivers/scsi/isci/probe_roms.h | 38 +++++++++++++++++++++++++++++++++++-- 5 files changed, 111 insertions(+), 5 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index ed1441c89577..9a52b984620f 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1666,6 +1666,9 @@ static void sci_controller_set_default_config_parameters(struct isci_host *ihost /* Default to no SSC operation. */ ihost->oem_parameters.controller.do_enable_ssc = false; + /* Default to short cables on all phys. */ + ihost->oem_parameters.controller.cable_selection_mask = 0; + /* Initialize all of the port parameter information to narrow ports. */ for (index = 0; index < SCI_MAX_PORTS; index++) { ihost->oem_parameters.ports[index].phy_mask = 0; @@ -1953,12 +1956,46 @@ void sci_controller_power_control_queue_remove(struct isci_host *ihost, static int is_long_cable(int phy, unsigned char selection_byte) { - return 0; + return !!(selection_byte & (1 << phy)); } static int is_medium_cable(int phy, unsigned char selection_byte) { - return 0; + return !!(selection_byte & (1 << (phy + 4))); +} + +static enum cable_selections decode_selection_byte( + int phy, + unsigned char selection_byte) +{ + return ((selection_byte & (1 << phy)) ? 1 : 0) + + (selection_byte & (1 << (phy + 4)) ? 2 : 0); +} + +static unsigned char *to_cable_select(struct isci_host *ihost) +{ + if (is_cable_select_overridden()) + return ((unsigned char *)&cable_selection_override) + + ihost->id; + else + return &ihost->oem_parameters.controller.cable_selection_mask; +} + +enum cable_selections decode_cable_selection(struct isci_host *ihost, int phy) +{ + return decode_selection_byte(phy, *to_cable_select(ihost)); +} + +char *lookup_cable_names(enum cable_selections selection) +{ + static char *cable_names[] = { + [short_cable] = "short", + [long_cable] = "long", + [medium_cable] = "medium", + [undefined_cable] = "" /* bit 0==1 */ + }; + return (selection <= undefined_cable) ? cable_names[selection] + : cable_names[undefined_cable]; } #define AFE_REGISTER_WRITE_DELAY 10 @@ -1967,10 +2004,10 @@ 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; + unsigned char cable_selection_mask = *to_cable_select(ihost); /* Clear DFX Status registers */ writel(0x0081000f, &afe->afe_dfx_master_control0); diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 4573075a6b97..5477f0fa8233 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -447,6 +447,24 @@ static inline bool is_c1(struct pci_dev *pdev) return false; } +enum cable_selections { + short_cable = 0, + long_cable = 1, + medium_cable = 2, + undefined_cable = 3 +}; + +#define CABLE_OVERRIDE_DISABLED (0x10000) + +static inline int is_cable_select_overridden(void) +{ + return cable_selection_override < CABLE_OVERRIDE_DISABLED; +} + +enum cable_selections decode_cable_selection(struct isci_host *ihost, int phy); +void validate_cable_selections(struct isci_host *ihost); +char *lookup_cable_names(enum cable_selections); + /* set hw control for 'activity', even though active enclosures seem to drive * the activity led on their own. Skip setting FSENG control on 'status' due * to unexpected operation and 'error' due to not being a supported automatic diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 8a34fd92e42e..1047108ba4de 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -122,6 +122,14 @@ unsigned char max_concurr_spinup; module_param(max_concurr_spinup, byte, 0); MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); +uint cable_selection_override = CABLE_OVERRIDE_DISABLED; +module_param(cable_selection_override, uint, 0); + +MODULE_PARM_DESC(cable_selection_override, + "This field indicates length of the SAS/SATA cable between " + "host and device. If any bits > 15 are set (default) " + "indicates \"use platform defaults\""); + static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev); @@ -412,6 +420,14 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) return NULL; isci_host->shost = shost; + dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " + "{%s, %s, %s, %s}\n", + (is_cable_select_overridden() ? "* " : ""), isci_host->id, + lookup_cable_names(decode_cable_selection(isci_host, 3)), + lookup_cable_names(decode_cable_selection(isci_host, 2)), + lookup_cable_names(decode_cable_selection(isci_host, 1)), + lookup_cable_names(decode_cable_selection(isci_host, 0))); + err = isci_host_init(isci_host); if (err) goto err_shost; diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h index 8efeb6b08321..234ab46fce33 100644 --- a/drivers/scsi/isci/isci.h +++ b/drivers/scsi/isci/isci.h @@ -480,6 +480,7 @@ extern u16 ssp_inactive_to; extern u16 stp_inactive_to; extern unsigned char phy_gen; extern unsigned char max_concurr_spinup; +extern uint cable_selection_override; irqreturn_t isci_msix_isr(int vec, void *data); irqreturn_t isci_intx_isr(int vec, void *data); diff --git a/drivers/scsi/isci/probe_roms.h b/drivers/scsi/isci/probe_roms.h index 42dd05414f3b..bb0e9d4d97c9 100644 --- a/drivers/scsi/isci/probe_roms.h +++ b/drivers/scsi/isci/probe_roms.h @@ -193,7 +193,8 @@ struct isci_oem_hdr { #define ISCI_ROM_VER_1_0 0x10 #define ISCI_ROM_VER_1_1 0x11 -#define ISCI_ROM_VER_LATEST ISCI_ROM_VER_1_1 +#define ISCI_ROM_VER_1_3 0x13 +#define ISCI_ROM_VER_LATEST ISCI_ROM_VER_1_3 /* Allowed PORT configuration modes APC Automatic PORT configuration mode is * defined by the OEM configuration parameters providing no PHY_MASK parameters @@ -270,7 +271,40 @@ struct sci_oem_params { }; uint8_t do_enable_ssc; }; - uint8_t reserved; + /* + * This field indicates length of the SAS/SATA cable between + * host and device. + * This field is used make relationship between analog + * parameters of the phy in the silicon and length of the cable. + * Supported cable attenuation levels: + * "short"- up to 3m, "medium"-3m to 6m, and "long"- more than + * 6m. + * + * This is bit mask field: + * + * BIT: (MSB) 7 6 5 4 + * ASSIGNMENT: - Medium cable + * length assignment + * BIT: 3 2 1 0 (LSB) + * ASSIGNMENT: - Long cable length + * assignment + * + * BITS 7-4 are set when the cable length is assigned to medium + * BITS 3-0 are set when the cable length is assigned to long + * + * The BIT positions are clear when the cable length is + * assigned to short. + * + * Setting the bits for both long and medium cable length is + * undefined. + * + * A value of 0x84 would assign + * phy3 - medium + * phy2 - long + * phy1 - short + * phy0 - short + */ + uint8_t cable_selection_mask; } controller; struct { -- cgit v1.2.3 From 6024d38b86ecc7943e398ef01b0dc2765870d444 Mon Sep 17 00:00:00 2001 From: Marcin Tomczak Date: Wed, 4 Jan 2012 01:32:54 -0800 Subject: [SCSI] isci: performance-fix, shorten default "no outbound task" timeout "No task timeout timer reduced from 20 to 2 This timer controls how long the SCU hardware will hold open the TX side of the connection before sending a DONE. The timer allows the hardware to attempt to optimize the DONE/CLOSE behavior to allow for new COMMAND IU to be posted. In practice closing the connection quicker is better." Signed-off-by: Marcin Tomczak Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/host.c | 2 +- drivers/scsi/isci/init.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 9a52b984620f..670ecb456d48 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1697,7 +1697,7 @@ static void sci_controller_set_default_config_parameters(struct isci_host *ihost ihost->user_parameters.ssp_inactivity_timeout = 5; ihost->user_parameters.stp_max_occupancy_timeout = 5; ihost->user_parameters.ssp_max_occupancy_timeout = 20; - ihost->user_parameters.no_outbound_task_timeout = 20; + ihost->user_parameters.no_outbound_task_timeout = 2; } static void controller_timeout(unsigned long data) diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 1047108ba4de..3c4ddad97053 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -94,7 +94,7 @@ MODULE_DEVICE_TABLE(pci, isci_id_table); /* linux isci specific settings */ -unsigned char no_outbound_task_to = 20; +unsigned char no_outbound_task_to = 2; module_param(no_outbound_task_to, byte, 0); MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)"); -- cgit v1.2.3 From be168a3b89b43b8bb4ef71066e91439d400e20a6 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Wed, 4 Jan 2012 01:33:00 -0800 Subject: [SCSI] isci: link speeds default to gen 2 Gen-3 operation is marginal, default to gen-2 for now. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/host.c | 5 +++-- drivers/scsi/isci/init.c | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 670ecb456d48..7e4d709dc201 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1676,8 +1676,9 @@ static void sci_controller_set_default_config_parameters(struct isci_host *ihost /* Initialize all of the phy parameter information. */ for (index = 0; index < SCI_MAX_PHYS; index++) { - /* Default to 6G (i.e. Gen 3) for now. */ - ihost->user_parameters.phys[index].max_speed_generation = 3; + /* Default to 3G (i.e. Gen 2). */ + ihost->user_parameters.phys[index].max_speed_generation = + SCIC_SDS_PARM_GEN2_SPEED; /* the frequencies cannot be 0 */ ihost->user_parameters.phys[index].align_insertion_frequency = 0x7f; diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 3c4ddad97053..2bcfb40ae9ad 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -114,7 +114,7 @@ u16 stp_inactive_to = 5; module_param(stp_inactive_to, ushort, 0); MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)"); -unsigned char phy_gen = 3; +unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED; module_param(phy_gen, byte, 0); MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)"); -- cgit v1.2.3 From 27234ab44f97d85bab062a9d18aaff99addd267d Mon Sep 17 00:00:00 2001 From: Maciej Trela Date: Wed, 4 Jan 2012 01:33:05 -0800 Subject: [SCSI] isci: remove unused 'isci_tmf->device' field As the field was never set, isci_print_tmf() using 'isci_tmf->device' sometimes causes a kernel crash if the dev_dbg() statement is enabled. Remove the unused field both from isci_tmf struct definition and from isci_print_tmf() Signed-off-by: Maciej Trela Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/task.c | 2 +- drivers/scsi/isci/task.h | 7 +++---- 2 files changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 66ad3dc89498..f5a3f7d2bdab 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -496,7 +496,7 @@ static int isci_task_execute_tmf(struct isci_host *ihost, } } - isci_print_tmf(tmf); + isci_print_tmf(ihost, tmf); if (tmf->status == SCI_SUCCESS) ret = TMF_RESP_FUNC_COMPLETE; diff --git a/drivers/scsi/isci/task.h b/drivers/scsi/isci/task.h index bc78c0a41d5c..1b27b3797c6c 100644 --- a/drivers/scsi/isci/task.h +++ b/drivers/scsi/isci/task.h @@ -106,7 +106,6 @@ struct isci_tmf { } resp; unsigned char lun[8]; u16 io_tag; - struct isci_remote_device *device; enum isci_tmf_function_codes tmf_code; int status; @@ -120,10 +119,10 @@ struct isci_tmf { }; -static inline void isci_print_tmf(struct isci_tmf *tmf) +static inline void isci_print_tmf(struct isci_host *ihost, struct isci_tmf *tmf) { if (SAS_PROTOCOL_SATA == tmf->proto) - dev_dbg(&tmf->device->isci_port->isci_host->pdev->dev, + dev_dbg(&ihost->pdev->dev, "%s: status = %x\n" "tmf->resp.d2h_fis.status = %x\n" "tmf->resp.d2h_fis.error = %x\n", @@ -132,7 +131,7 @@ static inline void isci_print_tmf(struct isci_tmf *tmf) tmf->resp.d2h_fis.status, tmf->resp.d2h_fis.error); else - dev_dbg(&tmf->device->isci_port->isci_host->pdev->dev, + dev_dbg(&ihost->pdev->dev, "%s: status = %x\n" "tmf->resp.resp_iu.data_present = %x\n" "tmf->resp.resp_iu.status = %x\n" -- cgit v1.2.3 From d3fd2e2bc29b1f0979352994f9035359003461c3 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 4 Jan 2012 01:33:10 -0800 Subject: [SCSI] isci: update version to 1.1 Bump the version now that the driver has atapi support and the initial round of hotplug fixes. The EXPERIMENTAL tag should have been removed a while back. While we're here also kill the "select SCSI_SAS_HOST_SMP" as the build error was separately fixed by commit d962480e "[SCSI] libsas: fix try_test_sas_gpio_gp_bit() build error". Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/Kconfig | 5 ----- drivers/scsi/isci/init.c | 2 +- 2 files changed, 1 insertion(+), 6 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 06ea3bcfdd2a..16570aa84aac 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -830,16 +830,11 @@ config SCSI_ISCI tristate "Intel(R) C600 Series Chipset SAS Controller" depends on PCI && SCSI depends on X86 - # (temporary): known alpha quality driver - depends on EXPERIMENTAL select SCSI_SAS_LIBSAS - select SCSI_SAS_HOST_SMP ---help--- This driver supports the 6Gb/s SAS capabilities of the storage control unit found in the Intel(R) C600 series chipset. - The experimental tag will be removed after the driver exits alpha - config SCSI_GENERIC_NCR5380 tristate "Generic NCR5380/53c400 SCSI PIO support" depends on ISA && SCSI diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 2bcfb40ae9ad..17c4c2c89c2e 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -65,7 +65,7 @@ #include "probe_roms.h" #define MAJ 1 -#define MIN 0 +#define MIN 1 #define BUILD 0 #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ __stringify(BUILD) -- cgit v1.2.3 From d4ec1cf61fb081a9dde0c0e0b2d0201f4005f937 Mon Sep 17 00:00:00 2001 From: Marcin Tomczak Date: Wed, 4 Jan 2012 01:33:15 -0800 Subject: [SCSI] isci: Fix IO fails when pull cable from phy in x4 wideport in MPC mode. Failure seen pulling a cable from a x4 port configured in manual port configuration (MPC) mode (MPC mode is set by the the OEM paramaters provided by the platform or isci_firmware.bin). While IO running to devices behind and expander, plugging out the cable from phy is causing IO failures and IO drops on disks and never recover. It happens because during link up/down the phy were being taken out of the port. Fix: during link down the phy is kept in the same logical port. Signed-off-by: Marcin Tomczak Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/port.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index ac7f27749f97..4cb071d825bb 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -674,9 +674,13 @@ void sci_port_deactivate_phy(struct isci_port *iport, struct isci_phy *iphy, iphy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN; - /* Re-assign the phy back to the LP as if it were a narrow port */ - writel(iphy->phy_index, - &iport->port_pe_configuration_register[iphy->phy_index]); + /* Re-assign the phy back to the LP as if it were a narrow port for APC + * mode. For MPC mode, the phy will remain in the port. + */ + if (iport->owning_controller->oem_parameters.controller.mode_type == + SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE) + writel(iphy->phy_index, + &iport->port_pe_configuration_register[iphy->phy_index]); if (do_notify_user == true) isci_port_link_down(ihost, iphy, iport); -- cgit v1.2.3 From 7e629841b8f8f7bc84d74de994d748b0a3282225 Mon Sep 17 00:00:00 2001 From: Bartek Nowakowski Date: Wed, 4 Jan 2012 01:33:20 -0800 Subject: [SCSI] isci: enable wide port targets Arrange for task_contexts prepared for the wide targets to account for all the attached phys in the port. Signed-off-by: Bartek Nowakowski Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/port.c | 2 +- drivers/scsi/isci/port.h | 4 ++++ drivers/scsi/isci/remote_device.c | 10 +++++++--- 3 files changed, 12 insertions(+), 4 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index 4cb071d825bb..49e8a72d1c5b 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -114,7 +114,7 @@ static u32 sci_port_get_phys(struct isci_port *iport) * value is returned if the specified port is not valid. When this value is * returned, no data is copied to the properties output parameter. */ -static enum sci_status sci_port_get_properties(struct isci_port *iport, +enum sci_status sci_port_get_properties(struct isci_port *iport, struct sci_port_properties *prop) { if (!iport || iport->logical_port_index == SCIC_SDS_DUMMY_PORT) diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h index cb5ffbc38603..b3a7f12803f5 100644 --- a/drivers/scsi/isci/port.h +++ b/drivers/scsi/isci/port.h @@ -250,6 +250,10 @@ bool sci_port_link_detected( struct isci_port *iport, struct isci_phy *iphy); +enum sci_status sci_port_get_properties( + struct isci_port *iport, + struct sci_port_properties *prop); + enum sci_status sci_port_link_up(struct isci_port *iport, struct isci_phy *iphy); enum sci_status sci_port_link_down(struct isci_port *iport, diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index b207cd3b15a0..dd74b6ceeb82 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -53,6 +53,7 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include +#include #include "isci.h" #include "port.h" #include "remote_device.h" @@ -1101,6 +1102,7 @@ static enum sci_status sci_remote_device_da_construct(struct isci_port *iport, struct isci_remote_device *idev) { enum sci_status status; + struct sci_port_properties properties; struct domain_device *dev = idev->domain_dev; sci_remote_device_construct(iport, idev); @@ -1110,6 +1112,11 @@ static enum sci_status sci_remote_device_da_construct(struct isci_port *iport, * entries will be needed to store the remote node. */ idev->is_direct_attached = true; + + sci_port_get_properties(iport, &properties); + /* Get accurate port width from port's phy mask for a DA device. */ + idev->device_port_width = hweight32(properties.phy_mask); + status = sci_controller_allocate_remote_node_context(iport->owning_controller, idev, &idev->rnc.remote_node_index); @@ -1125,9 +1132,6 @@ static enum sci_status sci_remote_device_da_construct(struct isci_port *iport, idev->connection_rate = sci_port_get_max_allowed_speed(iport); - /* / @todo Should I assign the port width by reading all of the phys on the port? */ - idev->device_port_width = 1; - return SCI_SUCCESS; } -- cgit v1.2.3 From 472d4d2cfbc169f3868a5f63ce727a482a2fd487 Mon Sep 17 00:00:00 2001 From: Marcin Tomczak Date: Wed, 4 Jan 2012 01:33:26 -0800 Subject: [SCSI] isci: allow more time for wide port targets When hot insert the wide port device through the mini-sas port, the first IOs (Report Luns or Inquiry) may fail due to the device trying to open to a SCU phy that is still in suspended state. This IO failure causes the wide port device stuck in UPDATING_PORT_WIDTH state. Signed-off-by: Marcin Tomczak Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/port_config.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/port_config.c b/drivers/scsi/isci/port_config.c index 38a99d281141..37d15d3165da 100644 --- a/drivers/scsi/isci/port_config.c +++ b/drivers/scsi/isci/port_config.c @@ -57,7 +57,7 @@ #define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT (10) #define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT (10) -#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION (100) +#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION (250) enum SCIC_SDS_APC_ACTIVITY { SCIC_SDS_APC_SKIP_PHY, -- cgit v1.2.3 From be778341812dc75b1c515fab6ebd39c0daf1e2bc Mon Sep 17 00:00:00 2001 From: Marcin Tomczak Date: Wed, 4 Jan 2012 01:33:31 -0800 Subject: [SCSI] isci: fix io failures while wide port links are coming up When the first phy of a wide port comes up, don't report the port ready yet, always wait for 250 miliseconds then config the port with all phys added to the port. So that we can avoid reporting wide port device too early to kernel, which caused the first IOs (report luns, inquirys) failed due to not all the phys are configured into its port. Changes also made that the phys in a wide port don't need to go through half second wait time for consuming power. Signed-off-by: Marcin Tomczak Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/host.c | 59 ++++++++++++++++++++++++++++++++++++++--- drivers/scsi/isci/port_config.c | 33 ++++++++++++++--------- 2 files changed, 76 insertions(+), 16 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 7e4d709dc201..1a65d6514237 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -899,7 +899,8 @@ static enum sci_status sci_controller_start_next_phy(struct isci_host *ihost) */ if ((iphy->is_in_link_training == false && state == SCI_PHY_INITIAL) || (iphy->is_in_link_training == false && state == SCI_PHY_STOPPED) || - (iphy->is_in_link_training == true && is_phy_starting(iphy))) { + (iphy->is_in_link_training == true && is_phy_starting(iphy)) || + (ihost->port_agent.phy_ready_mask != ihost->port_agent.phy_configured_mask)) { is_controller_start_complete = false; break; } @@ -1904,6 +1905,31 @@ static void power_control_timeout(unsigned long data) ihost->power_control.phys_waiting--; ihost->power_control.phys_granted_power++; sci_phy_consume_power_handler(iphy); + + if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) { + u8 j; + + for (j = 0; j < SCI_MAX_PHYS; j++) { + struct isci_phy *requester = ihost->power_control.requesters[j]; + + /* + * Search the power_control queue to see if there are other phys + * attached to the same remote device. If found, take all of + * them out of await_sas_power state. + */ + if (requester != NULL && requester != iphy) { + u8 other = memcmp(requester->frame_rcvd.iaf.sas_addr, + iphy->frame_rcvd.iaf.sas_addr, + sizeof(requester->frame_rcvd.iaf.sas_addr)); + + if (other == 0) { + ihost->power_control.requesters[j] = NULL; + ihost->power_control.phys_waiting--; + sci_phy_consume_power_handler(requester); + } + } + } + } } /* @@ -1938,9 +1964,34 @@ void sci_controller_power_control_queue_insert(struct isci_host *ihost, ihost->power_control.timer_started = true; } else { - /* Add the phy in the waiting list */ - ihost->power_control.requesters[iphy->phy_index] = iphy; - ihost->power_control.phys_waiting++; + /* + * There are phys, attached to the same sas address as this phy, are + * already in READY state, this phy don't need wait. + */ + u8 i; + struct isci_phy *current_phy; + + for (i = 0; i < SCI_MAX_PHYS; i++) { + u8 other; + current_phy = &ihost->phys[i]; + + other = memcmp(current_phy->frame_rcvd.iaf.sas_addr, + iphy->frame_rcvd.iaf.sas_addr, + sizeof(current_phy->frame_rcvd.iaf.sas_addr)); + + if (current_phy->sm.current_state_id == SCI_PHY_READY && + current_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS && + other == 0) { + sci_phy_consume_power_handler(iphy); + break; + } + } + + if (i == SCI_MAX_PHYS) { + /* Add the phy in the waiting list */ + ihost->power_control.requesters[iphy->phy_index] = iphy; + ihost->power_control.phys_waiting++; + } } } diff --git a/drivers/scsi/isci/port_config.c b/drivers/scsi/isci/port_config.c index 37d15d3165da..6d1e9544cbe5 100644 --- a/drivers/scsi/isci/port_config.c +++ b/drivers/scsi/isci/port_config.c @@ -466,6 +466,23 @@ sci_apc_agent_validate_phy_configuration(struct isci_host *ihost, return sci_port_configuration_agent_validate_ports(ihost, port_agent); } +/* + * This routine will restart the automatic port configuration timeout + * timer for the next time period. This could be caused by either a link + * down event or a link up event where we can not yet tell to which a phy + * belongs. + */ +static void sci_apc_agent_start_timer( + struct sci_port_configuration_agent *port_agent, + u32 timeout) +{ + if (port_agent->timer_pending) + sci_del_timer(&port_agent->timer); + + port_agent->timer_pending = true; + sci_mod_timer(&port_agent->timer, timeout); +} + static void sci_apc_agent_configure_ports(struct isci_host *ihost, struct sci_port_configuration_agent *port_agent, struct isci_phy *iphy, @@ -565,17 +582,8 @@ static void sci_apc_agent_configure_ports(struct isci_host *ihost, break; case SCIC_SDS_APC_START_TIMER: - /* - * This can occur for either a link down event, or a link - * up event where we cannot yet tell the port to which a - * phy belongs. - */ - if (port_agent->timer_pending) - sci_del_timer(&port_agent->timer); - - port_agent->timer_pending = true; - sci_mod_timer(&port_agent->timer, - SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION); + sci_apc_agent_start_timer(port_agent, + SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION); break; case SCIC_SDS_APC_SKIP_PHY: @@ -607,7 +615,8 @@ static void sci_apc_agent_link_up(struct isci_host *ihost, if (!iport) { /* the phy is not the part of this port */ port_agent->phy_ready_mask |= 1 << phy_index; - sci_apc_agent_configure_ports(ihost, port_agent, iphy, true); + sci_apc_agent_start_timer(port_agent, + SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION); } else { /* the phy is already the part of the port */ u32 port_state = iport->sm.current_state_id; -- cgit v1.2.3 From 0953dbea1d9a84c8443b5f5bb45229a6c9d7f9f3 Mon Sep 17 00:00:00 2001 From: Marcin Tomczak Date: Wed, 4 Jan 2012 01:33:36 -0800 Subject: [SCSI] isci: fix start OOB Split scu_link_layer_start_oob function to reset and enable and add flush after all steps. Signed-off-by: Marcin Tomczak Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/phy.c | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 61000cde84c7..fe18acfd6eb3 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -1098,24 +1098,25 @@ static void scu_link_layer_stop_protocol_engine( writel(enable_spinup_value, &iphy->link_layer_registers->notify_enable_spinup_control); } -/** - * - * - * This method will start the OOB/SN state machine for this struct isci_phy object. - */ -static void scu_link_layer_start_oob( - struct isci_phy *iphy) +static void scu_link_layer_start_oob(struct isci_phy *iphy) { - u32 scu_sas_pcfg_value; - - scu_sas_pcfg_value = - readl(&iphy->link_layer_registers->phy_configuration); - scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE); - scu_sas_pcfg_value &= - ~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) | - SCU_SAS_PCFG_GEN_BIT(HARD_RESET)); - writel(scu_sas_pcfg_value, - &iphy->link_layer_registers->phy_configuration); + struct scu_link_layer_registers __iomem *ll = iphy->link_layer_registers; + u32 val; + + /** Reset OOB sequence - start */ + val = readl(&ll->phy_configuration); + val &= ~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) | + SCU_SAS_PCFG_GEN_BIT(HARD_RESET)); + writel(val, &ll->phy_configuration); + readl(&ll->phy_configuration); /* flush */ + /** Reset OOB sequence - end */ + + /** Start OOB sequence - start */ + val = readl(&ll->phy_configuration); + val |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE); + writel(val, &ll->phy_configuration); + readl(&ll->phy_configuration); /* flush */ + /** Start OOB sequence - end */ } /** -- cgit v1.2.3 From 05b080fc933bb068b32fa119db00e8efcc10e3bd Mon Sep 17 00:00:00 2001 From: Marcin Tomczak Date: Wed, 4 Jan 2012 01:33:41 -0800 Subject: [SCSI] isci: fix, prevent port from getting stuck in the 'configuring' state When expander connected in x2 or x4 mode and with IO runnning, if a cable from wideport is plugged out from the phy, IO's start failing on all the targets. Observed that when cable is pulled with IO running, cominit is happening on all the links and IO's start dropping to 0 and eventually the whole IO fails. Second observation, target is trying to open and SCU is responding with "Open reject no destination". A cause of the problem is when the port went from the "ready configuring substate" back to "ready configuring substate" as a result of phy being pulled off, scic suspended the port task scheduler register. As a result no IO was allowed and in the "substate configuring enter" routine the IO never goes back to 0. As a result the port never comes out of "ready substate configuring". The patch adds a mechanism of activate and deactivate phy when a port link up, which fixes the problem. Signed-off-by: Bartek Nowakowski Signed-off-by: Maciej Trela Signed-off-by: Marcin Tomczak Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/isci/port.c | 92 ++++++++++++++++++++++++++---------------------- drivers/scsi/isci/port.h | 6 ++++ 2 files changed, 56 insertions(+), 42 deletions(-) (limited to 'drivers/scsi/isci') diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index 49e8a72d1c5b..7c6ac58a5c4c 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -647,19 +647,26 @@ void sci_port_setup_transports(struct isci_port *iport, u32 device_id) } } -static void sci_port_activate_phy(struct isci_port *iport, struct isci_phy *iphy, - bool do_notify_user) +static void sci_port_resume_phy(struct isci_port *iport, struct isci_phy *iphy) +{ + sci_phy_resume(iphy); + iport->enabled_phy_mask |= 1 << iphy->phy_index; +} + +static void sci_port_activate_phy(struct isci_port *iport, + struct isci_phy *iphy, + u8 flags) { struct isci_host *ihost = iport->owning_controller; - if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) + if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA && (flags & PF_RESUME)) sci_phy_resume(iphy); iport->active_phy_mask |= 1 << iphy->phy_index; sci_controller_clear_invalid_phy(ihost, iphy); - if (do_notify_user == true) + if (flags & PF_NOTIFY) isci_port_link_up(ihost, iport, iphy); } @@ -669,6 +676,7 @@ void sci_port_deactivate_phy(struct isci_port *iport, struct isci_phy *iphy, struct isci_host *ihost = iport->owning_controller; iport->active_phy_mask &= ~(1 << iphy->phy_index); + iport->enabled_phy_mask &= ~(1 << iphy->phy_index); if (!iport->active_phy_mask) iport->last_active_phy = iphy->phy_index; @@ -705,18 +713,16 @@ static void sci_port_invalid_link_up(struct isci_port *iport, struct isci_phy *i * sci_port_general_link_up_handler - phy can be assigned to port? * @sci_port: sci_port object for which has a phy that has gone link up. * @sci_phy: This is the struct isci_phy object that has gone link up. - * @do_notify_user: This parameter specifies whether to inform the user (via - * sci_port_link_up()) as to the fact that a new phy as become ready. + * @flags: PF_RESUME, PF_NOTIFY to sci_port_activate_phy * - * Determine if this phy can be assigned to this - * port . If the phy is not a valid PHY for - * this port then the function will notify the user. A PHY can only be - * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in - * the same port. none + * Determine if this phy can be assigned to this port . If the phy is + * not a valid PHY for this port then the function will notify the user. + * A PHY can only be part of a port if it's attached SAS ADDRESS is the + * same as all other PHYs in the same port. */ static void sci_port_general_link_up_handler(struct isci_port *iport, - struct isci_phy *iphy, - bool do_notify_user) + struct isci_phy *iphy, + u8 flags) { struct sci_sas_address port_sas_address; struct sci_sas_address phy_sas_address; @@ -734,7 +740,7 @@ static void sci_port_general_link_up_handler(struct isci_port *iport, iport->active_phy_mask == 0) { struct sci_base_state_machine *sm = &iport->sm; - sci_port_activate_phy(iport, iphy, do_notify_user); + sci_port_activate_phy(iport, iphy, flags); if (sm->current_state_id == SCI_PORT_RESETTING) port_state_machine_change(iport, SCI_PORT_READY); } else @@ -785,11 +791,16 @@ bool sci_port_link_detected( struct isci_phy *iphy) { if ((iport->logical_port_index != SCIC_SDS_DUMMY_PORT) && - (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) && - sci_port_is_wide(iport)) { - sci_port_invalid_link_up(iport, iphy); - - return false; + (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA)) { + if (sci_port_is_wide(iport)) { + sci_port_invalid_link_up(iport, iphy); + return false; + } else { + struct isci_host *ihost = iport->owning_controller; + struct isci_port *dst_port = &(ihost->ports[iphy->phy_index]); + writel(iphy->phy_index, + &dst_port->port_pe_configuration_register[iphy->phy_index]); + } } return true; @@ -979,6 +990,13 @@ static void sci_port_ready_substate_waiting_enter(struct sci_base_state_machine } } +static void scic_sds_port_ready_substate_waiting_exit( + struct sci_base_state_machine *sm) +{ + struct isci_port *iport = container_of(sm, typeof(*iport), sm); + sci_port_resume_port_task_scheduler(iport); +} + static void sci_port_ready_substate_operational_enter(struct sci_base_state_machine *sm) { u32 index; @@ -992,13 +1010,13 @@ static void sci_port_ready_substate_operational_enter(struct sci_base_state_mach writel(iport->physical_port_index, &iport->port_pe_configuration_register[ iport->phy_table[index]->phy_index]); + if (((iport->active_phy_mask^iport->enabled_phy_mask) & (1 << index)) != 0) + sci_port_resume_phy(iport, iport->phy_table[index]); } } sci_port_update_viit_entry(iport); - sci_port_resume_port_task_scheduler(iport); - /* * Post the dummy task for the port so the hardware can schedule * io correctly @@ -1065,20 +1083,9 @@ static void sci_port_ready_substate_configuring_enter(struct sci_base_state_mach if (iport->active_phy_mask == 0) { isci_port_not_ready(ihost, iport); - port_state_machine_change(iport, - SCI_PORT_SUB_WAITING); - } else if (iport->started_request_count == 0) - port_state_machine_change(iport, - SCI_PORT_SUB_OPERATIONAL); -} - -static void sci_port_ready_substate_configuring_exit(struct sci_base_state_machine *sm) -{ - struct isci_port *iport = container_of(sm, typeof(*iport), sm); - - sci_port_suspend_port_task_scheduler(iport); - if (iport->ready_exit) - sci_port_invalidate_dummy_remote_node(iport); + port_state_machine_change(iport, SCI_PORT_SUB_WAITING); + } else + port_state_machine_change(iport, SCI_PORT_SUB_OPERATIONAL); } enum sci_status sci_port_start(struct isci_port *iport) @@ -1256,7 +1263,7 @@ enum sci_status sci_port_add_phy(struct isci_port *iport, if (status != SCI_SUCCESS) return status; - sci_port_general_link_up_handler(iport, iphy, true); + sci_port_general_link_up_handler(iport, iphy, PF_NOTIFY|PF_RESUME); iport->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING; port_state_machine_change(iport, SCI_PORT_SUB_CONFIGURING); @@ -1266,7 +1273,7 @@ enum sci_status sci_port_add_phy(struct isci_port *iport, if (status != SCI_SUCCESS) return status; - sci_port_general_link_up_handler(iport, iphy, true); + sci_port_general_link_up_handler(iport, iphy, PF_NOTIFY); /* Re-enter the configuring state since this may be the last phy in * the port. @@ -1342,13 +1349,13 @@ enum sci_status sci_port_link_up(struct isci_port *iport, /* Since this is the first phy going link up for the port we * can just enable it and continue */ - sci_port_activate_phy(iport, iphy, true); + sci_port_activate_phy(iport, iphy, PF_NOTIFY|PF_RESUME); port_state_machine_change(iport, SCI_PORT_SUB_OPERATIONAL); return SCI_SUCCESS; case SCI_PORT_SUB_OPERATIONAL: - sci_port_general_link_up_handler(iport, iphy, true); + sci_port_general_link_up_handler(iport, iphy, PF_NOTIFY|PF_RESUME); return SCI_SUCCESS; case SCI_PORT_RESETTING: /* TODO We should make sure that the phy that has gone @@ -1365,7 +1372,7 @@ enum sci_status sci_port_link_up(struct isci_port *iport, /* In the resetting state we don't notify the user regarding * link up and link down notifications. */ - sci_port_general_link_up_handler(iport, iphy, false); + sci_port_general_link_up_handler(iport, iphy, PF_RESUME); return SCI_SUCCESS; default: dev_warn(sciport_to_dev(iport), @@ -1588,14 +1595,14 @@ static const struct sci_base_state sci_port_state_table[] = { }, [SCI_PORT_SUB_WAITING] = { .enter_state = sci_port_ready_substate_waiting_enter, + .exit_state = scic_sds_port_ready_substate_waiting_exit, }, [SCI_PORT_SUB_OPERATIONAL] = { .enter_state = sci_port_ready_substate_operational_enter, .exit_state = sci_port_ready_substate_operational_exit }, [SCI_PORT_SUB_CONFIGURING] = { - .enter_state = sci_port_ready_substate_configuring_enter, - .exit_state = sci_port_ready_substate_configuring_exit + .enter_state = sci_port_ready_substate_configuring_enter }, [SCI_PORT_RESETTING] = { .exit_state = sci_port_resetting_state_exit @@ -1613,6 +1620,7 @@ void sci_port_construct(struct isci_port *iport, u8 index, iport->logical_port_index = SCIC_SDS_DUMMY_PORT; iport->physical_port_index = index; iport->active_phy_mask = 0; + iport->enabled_phy_mask = 0; iport->last_active_phy = 0; iport->ready_exit = false; diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h index b3a7f12803f5..08116090eb70 100644 --- a/drivers/scsi/isci/port.h +++ b/drivers/scsi/isci/port.h @@ -63,6 +63,9 @@ #define SCIC_SDS_DUMMY_PORT 0xFF +#define PF_NOTIFY (1 << 0) +#define PF_RESUME (1 << 1) + struct isci_phy; struct isci_host; @@ -83,6 +86,8 @@ enum isci_status { * @logical_port_index: software port index * @physical_port_index: hardware port index * @active_phy_mask: identifies phy members + * @enabled_phy_mask: phy mask for the port + * that are already part of the port * @reserved_tag: * @reserved_rni: reserver for port task scheduler workaround * @started_request_count: reference count for outstanding commands @@ -104,6 +109,7 @@ struct isci_port { u8 logical_port_index; u8 physical_port_index; u8 active_phy_mask; + u8 enabled_phy_mask; u8 last_active_phy; u16 reserved_rni; u16 reserved_tag; -- cgit v1.2.3