| /* |
| * Linux MegaRAID driver for SAS based RAID controllers |
| * |
| * Copyright (c) 2003-2013 LSI Corporation |
| * Copyright (c) 2013-2014 Avago Technologies |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| * Authors: Avago Technologies |
| * Sreenivas Bagalkote |
| * Sumant Patro |
| * Bo Yang |
| * Adam Radford |
| * Kashyap Desai <kashyap.desai@avagotech.com> |
| * Sumit Saxena <sumit.saxena@avagotech.com> |
| * |
| * Send feedback to: megaraidlinux.pdl@avagotech.com |
| * |
| * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, |
| * San Jose, California 95131 |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/pci.h> |
| #include <linux/list.h> |
| #include <linux/moduleparam.h> |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/uio.h> |
| #include <linux/slab.h> |
| #include <linux/uaccess.h> |
| #include <asm/unaligned.h> |
| #include <linux/fs.h> |
| #include <linux/compat.h> |
| #include <linux/blkdev.h> |
| #include <linux/mutex.h> |
| #include <linux/poll.h> |
| #include <linux/vmalloc.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_tcq.h> |
| #include "megaraid_sas_fusion.h" |
| #include "megaraid_sas.h" |
| |
| /* |
| * Number of sectors per IO command |
| * Will be set in megasas_init_mfi if user does not provide |
| */ |
| static unsigned int max_sectors; |
| module_param_named(max_sectors, max_sectors, int, 0); |
| MODULE_PARM_DESC(max_sectors, |
| "Maximum number of sectors per IO command"); |
| |
| static int msix_disable; |
| module_param(msix_disable, int, S_IRUGO); |
| MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); |
| |
| static unsigned int msix_vectors; |
| module_param(msix_vectors, int, S_IRUGO); |
| MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); |
| |
| static int allow_vf_ioctls; |
| module_param(allow_vf_ioctls, int, S_IRUGO); |
| MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); |
| |
| static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; |
| module_param(throttlequeuedepth, int, S_IRUGO); |
| MODULE_PARM_DESC(throttlequeuedepth, |
| "Adapter queue depth when throttled due to I/O timeout. Default: 16"); |
| |
| unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME; |
| module_param(resetwaittime, int, S_IRUGO); |
| MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout " |
| "before resetting adapter. Default: 180"); |
| |
| int smp_affinity_enable = 1; |
| module_param(smp_affinity_enable, int, S_IRUGO); |
| MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)"); |
| |
| int rdpq_enable = 1; |
| module_param(rdpq_enable, int, S_IRUGO); |
| MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)"); |
| |
| unsigned int dual_qdepth_disable; |
| module_param(dual_qdepth_disable, int, S_IRUGO); |
| MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0"); |
| |
| unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; |
| module_param(scmd_timeout, int, S_IRUGO); |
| MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer."); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(MEGASAS_VERSION); |
| MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com"); |
| MODULE_DESCRIPTION("Avago MegaRAID SAS Driver"); |
| |
| int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); |
| static int megasas_get_pd_list(struct megasas_instance *instance); |
| static int megasas_ld_list_query(struct megasas_instance *instance, |
| u8 query_type); |
| static int megasas_issue_init_mfi(struct megasas_instance *instance); |
| static int megasas_register_aen(struct megasas_instance *instance, |
| u32 seq_num, u32 class_locale_word); |
| static void megasas_get_pd_info(struct megasas_instance *instance, |
| struct scsi_device *sdev); |
| |
| /* |
| * PCI ID table for all supported controllers |
| */ |
| static struct pci_device_id megasas_pci_table[] = { |
| |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, |
| /* xscale IOP */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, |
| /* ppc IOP */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, |
| /* ppc IOP */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, |
| /* gen2*/ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, |
| /* gen2*/ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, |
| /* skinny*/ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, |
| /* skinny*/ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, |
| /* xscale IOP, vega */ |
| {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, |
| /* xscale IOP */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, |
| /* Fusion */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, |
| /* Plasma */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, |
| /* Invader */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, |
| /* Fury */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)}, |
| /* Intruder */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)}, |
| /* Intruder 24 port*/ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)}, |
| /* VENTURA */ |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)}, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, megasas_pci_table); |
| |
| static int megasas_mgmt_majorno; |
| struct megasas_mgmt_info megasas_mgmt_info; |
| static struct fasync_struct *megasas_async_queue; |
| static DEFINE_MUTEX(megasas_async_queue_mutex); |
| |
| static int megasas_poll_wait_aen; |
| static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); |
| static u32 support_poll_for_event; |
| u32 megasas_dbg_lvl; |
| static u32 support_device_change; |
| static bool support_nvme_encapsulation; |
| |
| /* define lock for aen poll */ |
| spinlock_t poll_aen_lock; |
| |
| void |
| megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, |
| u8 alt_status); |
| static u32 |
| megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); |
| static int |
| megasas_adp_reset_gen2(struct megasas_instance *instance, |
| struct megasas_register_set __iomem *reg_set); |
| static irqreturn_t megasas_isr(int irq, void *devp); |
| static u32 |
| megasas_init_adapter_mfi(struct megasas_instance *instance); |
| u32 |
| megasas_build_and_issue_cmd(struct megasas_instance *instance, |
| struct scsi_cmnd *scmd); |
| static void megasas_complete_cmd_dpc(unsigned long instance_addr); |
| int |
| wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, |
| int seconds); |
| void megasas_fusion_ocr_wq(struct work_struct *work); |
| static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, |
| int initial); |
| static int |
| megasas_set_dma_mask(struct megasas_instance *instance); |
| static int |
| megasas_alloc_ctrl_mem(struct megasas_instance *instance); |
| static inline void |
| megasas_free_ctrl_mem(struct megasas_instance *instance); |
| static inline int |
| megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance); |
| static inline void |
| megasas_free_ctrl_dma_buffers(struct megasas_instance *instance); |
| static inline void |
| megasas_init_ctrl_params(struct megasas_instance *instance); |
| |
| /** |
| * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs |
| * @instance: Adapter soft state |
| * @dcmd: DCMD frame inside MFI command |
| * @dma_addr: DMA address of buffer to be passed to FW |
| * @dma_len: Length of DMA buffer to be passed to FW |
| * @return: void |
| */ |
| void megasas_set_dma_settings(struct megasas_instance *instance, |
| struct megasas_dcmd_frame *dcmd, |
| dma_addr_t dma_addr, u32 dma_len) |
| { |
| if (instance->consistent_mask_64bit) { |
| dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr); |
| dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len); |
| dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64); |
| |
| } else { |
| dcmd->sgl.sge32[0].phys_addr = |
| cpu_to_le32(lower_32_bits(dma_addr)); |
| dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len); |
| dcmd->flags = cpu_to_le16(dcmd->flags); |
| } |
| } |
| |
| void |
| megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) |
| { |
| instance->instancet->fire_cmd(instance, |
| cmd->frame_phys_addr, 0, instance->reg_set); |
| return; |
| } |
| |
| /** |
| * megasas_get_cmd - Get a command from the free pool |
| * @instance: Adapter soft state |
| * |
| * Returns a free command from the pool |
| */ |
| struct megasas_cmd *megasas_get_cmd(struct megasas_instance |
| *instance) |
| { |
| unsigned long flags; |
| struct megasas_cmd *cmd = NULL; |
| |
| spin_lock_irqsave(&instance->mfi_pool_lock, flags); |
| |
| if (!list_empty(&instance->cmd_pool)) { |
| cmd = list_entry((&instance->cmd_pool)->next, |
| struct megasas_cmd, list); |
| list_del_init(&cmd->list); |
| } else { |
| dev_err(&instance->pdev->dev, "Command pool empty!\n"); |
| } |
| |
| spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); |
| return cmd; |
| } |
| |
| /** |
| * megasas_return_cmd - Return a cmd to free command pool |
| * @instance: Adapter soft state |
| * @cmd: Command packet to be returned to free command pool |
| */ |
| void |
| megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) |
| { |
| unsigned long flags; |
| u32 blk_tags; |
| struct megasas_cmd_fusion *cmd_fusion; |
| struct fusion_context *fusion = instance->ctrl_context; |
| |
| /* This flag is used only for fusion adapter. |
| * Wait for Interrupt for Polled mode DCMD |
| */ |
| if (cmd->flags & DRV_DCMD_POLLED_MODE) |
| return; |
| |
| spin_lock_irqsave(&instance->mfi_pool_lock, flags); |
| |
| if (fusion) { |
| blk_tags = instance->max_scsi_cmds + cmd->index; |
| cmd_fusion = fusion->cmd_list[blk_tags]; |
| megasas_return_cmd_fusion(instance, cmd_fusion); |
| } |
| cmd->scmd = NULL; |
| cmd->frame_count = 0; |
| cmd->flags = 0; |
| memset(cmd->frame, 0, instance->mfi_frame_size); |
| cmd->frame->io.context = cpu_to_le32(cmd->index); |
| if (!fusion && reset_devices) |
| cmd->frame->hdr.cmd = MFI_CMD_INVALID; |
| list_add(&cmd->list, (&instance->cmd_pool)->next); |
| |
| spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); |
| |
| } |
| |
| static const char * |
| format_timestamp(uint32_t timestamp) |
| { |
| static char buffer[32]; |
| |
| if ((timestamp & 0xff000000) == 0xff000000) |
| snprintf(buffer, sizeof(buffer), "boot + %us", timestamp & |
| 0x00ffffff); |
| else |
| snprintf(buffer, sizeof(buffer), "%us", timestamp); |
| return buffer; |
| } |
| |
| static const char * |
| format_class(int8_t class) |
| { |
| static char buffer[6]; |
| |
| switch (class) { |
| case MFI_EVT_CLASS_DEBUG: |
| return "debug"; |
| case MFI_EVT_CLASS_PROGRESS: |
| return "progress"; |
| case MFI_EVT_CLASS_INFO: |
| return "info"; |
| case MFI_EVT_CLASS_WARNING: |
| return "WARN"; |
| case MFI_EVT_CLASS_CRITICAL: |
| return "CRIT"; |
| case MFI_EVT_CLASS_FATAL: |
| return "FATAL"; |
| case MFI_EVT_CLASS_DEAD: |
| return "DEAD"; |
| default: |
| snprintf(buffer, sizeof(buffer), "%d", class); |
| return buffer; |
| } |
| } |
| |
| /** |
| * megasas_decode_evt: Decode FW AEN event and print critical event |
| * for information. |
| * @instance: Adapter soft state |
| */ |
| static void |
| megasas_decode_evt(struct megasas_instance *instance) |
| { |
| struct megasas_evt_detail *evt_detail = instance->evt_detail; |
| union megasas_evt_class_locale class_locale; |
| class_locale.word = le32_to_cpu(evt_detail->cl.word); |
| |
| if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL) |
| dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n", |
| le32_to_cpu(evt_detail->seq_num), |
| format_timestamp(le32_to_cpu(evt_detail->time_stamp)), |
| (class_locale.members.locale), |
| format_class(class_locale.members.class), |
| evt_detail->description); |
| } |
| |
| /** |
| * The following functions are defined for xscale |
| * (deviceid : 1064R, PERC5) controllers |
| */ |
| |
| /** |
| * megasas_enable_intr_xscale - Enables interrupts |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_enable_intr_xscale(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| |
| regs = instance->reg_set; |
| writel(0, &(regs)->outbound_intr_mask); |
| |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_disable_intr_xscale -Disables interrupt |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_disable_intr_xscale(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| u32 mask = 0x1f; |
| |
| regs = instance->reg_set; |
| writel(mask, ®s->outbound_intr_mask); |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_read_fw_status_reg_xscale - returns the current FW status value |
| * @regs: MFI register set |
| */ |
| static u32 |
| megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) |
| { |
| return readl(&(regs)->outbound_msg_0); |
| } |
| /** |
| * megasas_clear_interrupt_xscale - Check & clear interrupt |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) |
| { |
| u32 status; |
| u32 mfiStatus = 0; |
| |
| /* |
| * Check if it is our interrupt |
| */ |
| status = readl(®s->outbound_intr_status); |
| |
| if (status & MFI_OB_INTR_STATUS_MASK) |
| mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; |
| if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) |
| mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; |
| |
| /* |
| * Clear the interrupt by writing back the same value |
| */ |
| if (mfiStatus) |
| writel(status, ®s->outbound_intr_status); |
| |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_status); |
| |
| return mfiStatus; |
| } |
| |
| /** |
| * megasas_fire_cmd_xscale - Sends command to the FW |
| * @frame_phys_addr : Physical address of cmd |
| * @frame_count : Number of frames for the command |
| * @regs : MFI register set |
| */ |
| static inline void |
| megasas_fire_cmd_xscale(struct megasas_instance *instance, |
| dma_addr_t frame_phys_addr, |
| u32 frame_count, |
| struct megasas_register_set __iomem *regs) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&instance->hba_lock, flags); |
| writel((frame_phys_addr >> 3)|(frame_count), |
| &(regs)->inbound_queue_port); |
| spin_unlock_irqrestore(&instance->hba_lock, flags); |
| } |
| |
| /** |
| * megasas_adp_reset_xscale - For controller reset |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_adp_reset_xscale(struct megasas_instance *instance, |
| struct megasas_register_set __iomem *regs) |
| { |
| u32 i; |
| u32 pcidata; |
| |
| writel(MFI_ADP_RESET, ®s->inbound_doorbell); |
| |
| for (i = 0; i < 3; i++) |
| msleep(1000); /* sleep for 3 secs */ |
| pcidata = 0; |
| pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); |
| dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata); |
| if (pcidata & 0x2) { |
| dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata); |
| pcidata &= ~0x2; |
| pci_write_config_dword(instance->pdev, |
| MFI_1068_PCSR_OFFSET, pcidata); |
| |
| for (i = 0; i < 2; i++) |
| msleep(1000); /* need to wait 2 secs again */ |
| |
| pcidata = 0; |
| pci_read_config_dword(instance->pdev, |
| MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); |
| dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata); |
| if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { |
| dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata); |
| pcidata = 0; |
| pci_write_config_dword(instance->pdev, |
| MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * megasas_check_reset_xscale - For controller reset check |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_check_reset_xscale(struct megasas_instance *instance, |
| struct megasas_register_set __iomem *regs) |
| { |
| if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && |
| (le32_to_cpu(*instance->consumer) == |
| MEGASAS_ADPRESET_INPROG_SIGN)) |
| return 1; |
| return 0; |
| } |
| |
| static struct megasas_instance_template megasas_instance_template_xscale = { |
| |
| .fire_cmd = megasas_fire_cmd_xscale, |
| .enable_intr = megasas_enable_intr_xscale, |
| .disable_intr = megasas_disable_intr_xscale, |
| .clear_intr = megasas_clear_intr_xscale, |
| .read_fw_status_reg = megasas_read_fw_status_reg_xscale, |
| .adp_reset = megasas_adp_reset_xscale, |
| .check_reset = megasas_check_reset_xscale, |
| .service_isr = megasas_isr, |
| .tasklet = megasas_complete_cmd_dpc, |
| .init_adapter = megasas_init_adapter_mfi, |
| .build_and_issue_cmd = megasas_build_and_issue_cmd, |
| .issue_dcmd = megasas_issue_dcmd, |
| }; |
| |
| /** |
| * This is the end of set of functions & definitions specific |
| * to xscale (deviceid : 1064R, PERC5) controllers |
| */ |
| |
| /** |
| * The following functions are defined for ppc (deviceid : 0x60) |
| * controllers |
| */ |
| |
| /** |
| * megasas_enable_intr_ppc - Enables interrupts |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_enable_intr_ppc(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| |
| regs = instance->reg_set; |
| writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); |
| |
| writel(~0x80000000, &(regs)->outbound_intr_mask); |
| |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_disable_intr_ppc - Disable interrupt |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_disable_intr_ppc(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| u32 mask = 0xFFFFFFFF; |
| |
| regs = instance->reg_set; |
| writel(mask, ®s->outbound_intr_mask); |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_read_fw_status_reg_ppc - returns the current FW status value |
| * @regs: MFI register set |
| */ |
| static u32 |
| megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) |
| { |
| return readl(&(regs)->outbound_scratch_pad); |
| } |
| |
| /** |
| * megasas_clear_interrupt_ppc - Check & clear interrupt |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) |
| { |
| u32 status, mfiStatus = 0; |
| |
| /* |
| * Check if it is our interrupt |
| */ |
| status = readl(®s->outbound_intr_status); |
| |
| if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) |
| mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; |
| |
| if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) |
| mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; |
| |
| /* |
| * Clear the interrupt by writing back the same value |
| */ |
| writel(status, ®s->outbound_doorbell_clear); |
| |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_doorbell_clear); |
| |
| return mfiStatus; |
| } |
| |
| /** |
| * megasas_fire_cmd_ppc - Sends command to the FW |
| * @frame_phys_addr : Physical address of cmd |
| * @frame_count : Number of frames for the command |
| * @regs : MFI register set |
| */ |
| static inline void |
| megasas_fire_cmd_ppc(struct megasas_instance *instance, |
| dma_addr_t frame_phys_addr, |
| u32 frame_count, |
| struct megasas_register_set __iomem *regs) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&instance->hba_lock, flags); |
| writel((frame_phys_addr | (frame_count<<1))|1, |
| &(regs)->inbound_queue_port); |
| spin_unlock_irqrestore(&instance->hba_lock, flags); |
| } |
| |
| /** |
| * megasas_check_reset_ppc - For controller reset check |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_check_reset_ppc(struct megasas_instance *instance, |
| struct megasas_register_set __iomem *regs) |
| { |
| if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) |
| return 1; |
| |
| return 0; |
| } |
| |
| static struct megasas_instance_template megasas_instance_template_ppc = { |
| |
| .fire_cmd = megasas_fire_cmd_ppc, |
| .enable_intr = megasas_enable_intr_ppc, |
| .disable_intr = megasas_disable_intr_ppc, |
| .clear_intr = megasas_clear_intr_ppc, |
| .read_fw_status_reg = megasas_read_fw_status_reg_ppc, |
| .adp_reset = megasas_adp_reset_xscale, |
| .check_reset = megasas_check_reset_ppc, |
| .service_isr = megasas_isr, |
| .tasklet = megasas_complete_cmd_dpc, |
| .init_adapter = megasas_init_adapter_mfi, |
| .build_and_issue_cmd = megasas_build_and_issue_cmd, |
| .issue_dcmd = megasas_issue_dcmd, |
| }; |
| |
| /** |
| * megasas_enable_intr_skinny - Enables interrupts |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_enable_intr_skinny(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| |
| regs = instance->reg_set; |
| writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); |
| |
| writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); |
| |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_disable_intr_skinny - Disables interrupt |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_disable_intr_skinny(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| u32 mask = 0xFFFFFFFF; |
| |
| regs = instance->reg_set; |
| writel(mask, ®s->outbound_intr_mask); |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_read_fw_status_reg_skinny - returns the current FW status value |
| * @regs: MFI register set |
| */ |
| static u32 |
| megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) |
| { |
| return readl(&(regs)->outbound_scratch_pad); |
| } |
| |
| /** |
| * megasas_clear_interrupt_skinny - Check & clear interrupt |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) |
| { |
| u32 status; |
| u32 mfiStatus = 0; |
| |
| /* |
| * Check if it is our interrupt |
| */ |
| status = readl(®s->outbound_intr_status); |
| |
| if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { |
| return 0; |
| } |
| |
| /* |
| * Check if it is our interrupt |
| */ |
| if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) == |
| MFI_STATE_FAULT) { |
| mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; |
| } else |
| mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; |
| |
| /* |
| * Clear the interrupt by writing back the same value |
| */ |
| writel(status, ®s->outbound_intr_status); |
| |
| /* |
| * dummy read to flush PCI |
| */ |
| readl(®s->outbound_intr_status); |
| |
| return mfiStatus; |
| } |
| |
| /** |
| * megasas_fire_cmd_skinny - Sends command to the FW |
| * @frame_phys_addr : Physical address of cmd |
| * @frame_count : Number of frames for the command |
| * @regs : MFI register set |
| */ |
| static inline void |
| megasas_fire_cmd_skinny(struct megasas_instance *instance, |
| dma_addr_t frame_phys_addr, |
| u32 frame_count, |
| struct megasas_register_set __iomem *regs) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&instance->hba_lock, flags); |
| writel(upper_32_bits(frame_phys_addr), |
| &(regs)->inbound_high_queue_port); |
| writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, |
| &(regs)->inbound_low_queue_port); |
| mmiowb(); |
| spin_unlock_irqrestore(&instance->hba_lock, flags); |
| } |
| |
| /** |
| * megasas_check_reset_skinny - For controller reset check |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_check_reset_skinny(struct megasas_instance *instance, |
| struct megasas_register_set __iomem *regs) |
| { |
| if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) |
| return 1; |
| |
| return 0; |
| } |
| |
| static struct megasas_instance_template megasas_instance_template_skinny = { |
| |
| .fire_cmd = megasas_fire_cmd_skinny, |
| .enable_intr = megasas_enable_intr_skinny, |
| .disable_intr = megasas_disable_intr_skinny, |
| .clear_intr = megasas_clear_intr_skinny, |
| .read_fw_status_reg = megasas_read_fw_status_reg_skinny, |
| .adp_reset = megasas_adp_reset_gen2, |
| .check_reset = megasas_check_reset_skinny, |
| .service_isr = megasas_isr, |
| .tasklet = megasas_complete_cmd_dpc, |
| .init_adapter = megasas_init_adapter_mfi, |
| .build_and_issue_cmd = megasas_build_and_issue_cmd, |
| .issue_dcmd = megasas_issue_dcmd, |
| }; |
| |
| |
| /** |
| * The following functions are defined for gen2 (deviceid : 0x78 0x79) |
| * controllers |
| */ |
| |
| /** |
| * megasas_enable_intr_gen2 - Enables interrupts |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_enable_intr_gen2(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| |
| regs = instance->reg_set; |
| writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); |
| |
| /* write ~0x00000005 (4 & 1) to the intr mask*/ |
| writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); |
| |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_disable_intr_gen2 - Disables interrupt |
| * @regs: MFI register set |
| */ |
| static inline void |
| megasas_disable_intr_gen2(struct megasas_instance *instance) |
| { |
| struct megasas_register_set __iomem *regs; |
| u32 mask = 0xFFFFFFFF; |
| |
| regs = instance->reg_set; |
| writel(mask, ®s->outbound_intr_mask); |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_mask); |
| } |
| |
| /** |
| * megasas_read_fw_status_reg_gen2 - returns the current FW status value |
| * @regs: MFI register set |
| */ |
| static u32 |
| megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) |
| { |
| return readl(&(regs)->outbound_scratch_pad); |
| } |
| |
| /** |
| * megasas_clear_interrupt_gen2 - Check & clear interrupt |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) |
| { |
| u32 status; |
| u32 mfiStatus = 0; |
| |
| /* |
| * Check if it is our interrupt |
| */ |
| status = readl(®s->outbound_intr_status); |
| |
| if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { |
| mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; |
| } |
| if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { |
| mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; |
| } |
| |
| /* |
| * Clear the interrupt by writing back the same value |
| */ |
| if (mfiStatus) |
| writel(status, ®s->outbound_doorbell_clear); |
| |
| /* Dummy readl to force pci flush */ |
| readl(®s->outbound_intr_status); |
| |
| return mfiStatus; |
| } |
| /** |
| * megasas_fire_cmd_gen2 - Sends command to the FW |
| * @frame_phys_addr : Physical address of cmd |
| * @frame_count : Number of frames for the command |
| * @regs : MFI register set |
| */ |
| static inline void |
| megasas_fire_cmd_gen2(struct megasas_instance *instance, |
| dma_addr_t frame_phys_addr, |
| u32 frame_count, |
| struct megasas_register_set __iomem *regs) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&instance->hba_lock, flags); |
| writel((frame_phys_addr | (frame_count<<1))|1, |
| &(regs)->inbound_queue_port); |
| spin_unlock_irqrestore(&instance->hba_lock, flags); |
| } |
| |
| /** |
| * megasas_adp_reset_gen2 - For controller reset |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_adp_reset_gen2(struct megasas_instance *instance, |
| struct megasas_register_set __iomem *reg_set) |
| { |
| u32 retry = 0 ; |
| u32 HostDiag; |
| u32 __iomem *seq_offset = ®_set->seq_offset; |
| u32 __iomem *hostdiag_offset = ®_set->host_diag; |
| |
| if (instance->instancet == &megasas_instance_template_skinny) { |
| seq_offset = ®_set->fusion_seq_offset; |
| hostdiag_offset = ®_set->fusion_host_diag; |
| } |
| |
| writel(0, seq_offset); |
| writel(4, seq_offset); |
| writel(0xb, seq_offset); |
| writel(2, seq_offset); |
| writel(7, seq_offset); |
| writel(0xd, seq_offset); |
| |
| msleep(1000); |
| |
| HostDiag = (u32)readl(hostdiag_offset); |
| |
| while (!(HostDiag & DIAG_WRITE_ENABLE)) { |
| msleep(100); |
| HostDiag = (u32)readl(hostdiag_offset); |
| dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n", |
| retry, HostDiag); |
| |
| if (retry++ >= 100) |
| return 1; |
| |
| } |
| |
| dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); |
| |
| writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); |
| |
| ssleep(10); |
| |
| HostDiag = (u32)readl(hostdiag_offset); |
| while (HostDiag & DIAG_RESET_ADAPTER) { |
| msleep(100); |
| HostDiag = (u32)readl(hostdiag_offset); |
| dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n", |
| retry, HostDiag); |
| |
| if (retry++ >= 1000) |
| return 1; |
| |
| } |
| return 0; |
| } |
| |
| /** |
| * megasas_check_reset_gen2 - For controller reset check |
| * @regs: MFI register set |
| */ |
| static int |
| megasas_check_reset_gen2(struct megasas_instance *instance, |
| struct megasas_register_set __iomem *regs) |
| { |
| if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) |
| return 1; |
| |
| return 0; |
| } |
| |
| static struct megasas_instance_template megasas_instance_template_gen2 = { |
| |
| .fire_cmd = megasas_fire_cmd_gen2, |
| .enable_intr = megasas_enable_intr_gen2, |
| .disable_intr = megasas_disable_intr_gen2, |
| .clear_intr = megasas_clear_intr_gen2, |
| .read_fw_status_reg = megasas_read_fw_status_reg_gen2, |
| .adp_reset = megasas_adp_reset_gen2, |
| .check_reset = megasas_check_reset_gen2, |
| .service_isr = megasas_isr, |
| .tasklet = megasas_complete_cmd_dpc, |
| .init_adapter = megasas_init_adapter_mfi, |
| .build_and_issue_cmd = megasas_build_and_issue_cmd, |
| .issue_dcmd = megasas_issue_dcmd, |
| }; |
| |
| /** |
| * This is the end of set of functions & definitions |
| * specific to gen2 (deviceid : 0x78, 0x79) controllers |
| */ |
| |
| /* |
| * Template added for TB (Fusion) |
| */ |
| extern struct megasas_instance_template megasas_instance_template_fusion; |
| |
| /** |
| * megasas_issue_polled - Issues a polling command |
| * @instance: Adapter soft state |
| * @cmd: Command packet to be issued |
| * |
| * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting. |
| */ |
| int |
| megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) |
| { |
| struct megasas_header *frame_hdr = &cmd->frame->hdr; |
| |
| frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS; |
| frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); |
| |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { |
| dev_err(&instance->pdev->dev, "Failed from %s %d\n", |
| __func__, __LINE__); |
| return DCMD_NOT_FIRED; |
| } |
| |
| instance->instancet->issue_dcmd(instance, cmd); |
| |
| return wait_and_poll(instance, cmd, instance->requestorId ? |
| MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS); |
| } |
| |
| /** |
| * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds |
| * @instance: Adapter soft state |
| * @cmd: Command to be issued |
| * @timeout: Timeout in seconds |
| * |
| * This function waits on an event for the command to be returned from ISR. |
| * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs |
| * Used to issue ioctl commands. |
| */ |
| int |
| megasas_issue_blocked_cmd(struct megasas_instance *instance, |
| struct megasas_cmd *cmd, int timeout) |
| { |
| int ret = 0; |
| cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; |
| |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { |
| dev_err(&instance->pdev->dev, "Failed from %s %d\n", |
| __func__, __LINE__); |
| return DCMD_NOT_FIRED; |
| } |
| |
| instance->instancet->issue_dcmd(instance, cmd); |
| |
| if (timeout) { |
| ret = wait_event_timeout(instance->int_cmd_wait_q, |
| cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); |
| if (!ret) { |
| dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n", |
| __func__, __LINE__); |
| return DCMD_TIMEOUT; |
| } |
| } else |
| wait_event(instance->int_cmd_wait_q, |
| cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); |
| |
| return (cmd->cmd_status_drv == MFI_STAT_OK) ? |
| DCMD_SUCCESS : DCMD_FAILED; |
| } |
| |
| /** |
| * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd |
| * @instance: Adapter soft state |
| * @cmd_to_abort: Previously issued cmd to be aborted |
| * @timeout: Timeout in seconds |
| * |
| * MFI firmware can abort previously issued AEN comamnd (automatic event |
| * notification). The megasas_issue_blocked_abort_cmd() issues such abort |
| * cmd and waits for return status. |
| * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs |
| */ |
| static int |
| megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, |
| struct megasas_cmd *cmd_to_abort, int timeout) |
| { |
| struct megasas_cmd *cmd; |
| struct megasas_abort_frame *abort_fr; |
| int ret = 0; |
| |
| cmd = megasas_get_cmd(instance); |
| |
| if (!cmd) |
| return -1; |
| |
| abort_fr = &cmd->frame->abort; |
| |
| /* |
| * Prepare and issue the abort frame |
| */ |
| abort_fr->cmd = MFI_CMD_ABORT; |
| abort_fr->cmd_status = MFI_STAT_INVALID_STATUS; |
| abort_fr->flags = cpu_to_le16(0); |
| abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); |
| abort_fr->abort_mfi_phys_addr_lo = |
| cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); |
| abort_fr->abort_mfi_phys_addr_hi = |
| cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); |
| |
| cmd->sync_cmd = 1; |
| cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; |
| |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { |
| dev_err(&instance->pdev->dev, "Failed from %s %d\n", |
| __func__, __LINE__); |
| return DCMD_NOT_FIRED; |
| } |
| |
| instance->instancet->issue_dcmd(instance, cmd); |
| |
| if (timeout) { |
| ret = wait_event_timeout(instance->abort_cmd_wait_q, |
| cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); |
| if (!ret) { |
| dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n", |
| __func__, __LINE__); |
| return DCMD_TIMEOUT; |
| } |
| } else |
| wait_event(instance->abort_cmd_wait_q, |
| cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); |
| |
| cmd->sync_cmd = 0; |
| |
| megasas_return_cmd(instance, cmd); |
| return (cmd->cmd_status_drv == MFI_STAT_OK) ? |
| DCMD_SUCCESS : DCMD_FAILED; |
| } |
| |
| /** |
| * megasas_make_sgl32 - Prepares 32-bit SGL |
| * @instance: Adapter soft state |
| * @scp: SCSI command from the mid-layer |
| * @mfi_sgl: SGL to be filled in |
| * |
| * If successful, this function returns the number of SG elements. Otherwise, |
| * it returnes -1. |
| */ |
| static int |
| megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| union megasas_sgl *mfi_sgl) |
| { |
| int i; |
| int sge_count; |
| struct scatterlist *os_sgl; |
| |
| sge_count = scsi_dma_map(scp); |
| BUG_ON(sge_count < 0); |
| |
| if (sge_count) { |
| scsi_for_each_sg(scp, os_sgl, sge_count, i) { |
| mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); |
| mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); |
| } |
| } |
| return sge_count; |
| } |
| |
| /** |
| * megasas_make_sgl64 - Prepares 64-bit SGL |
| * @instance: Adapter soft state |
| * @scp: SCSI command from the mid-layer |
| * @mfi_sgl: SGL to be filled in |
| * |
| * If successful, this function returns the number of SG elements. Otherwise, |
| * it returnes -1. |
| */ |
| static int |
| megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| union megasas_sgl *mfi_sgl) |
| { |
| int i; |
| int sge_count; |
| struct scatterlist *os_sgl; |
| |
| sge_count = scsi_dma_map(scp); |
| BUG_ON(sge_count < 0); |
| |
| if (sge_count) { |
| scsi_for_each_sg(scp, os_sgl, sge_count, i) { |
| mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); |
| mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); |
| } |
| } |
| return sge_count; |
| } |
| |
| /** |
| * megasas_make_sgl_skinny - Prepares IEEE SGL |
| * @instance: Adapter soft state |
| * @scp: SCSI command from the mid-layer |
| * @mfi_sgl: SGL to be filled in |
| * |
| * If successful, this function returns the number of SG elements. Otherwise, |
| * it returnes -1. |
| */ |
| static int |
| megasas_make_sgl_skinny(struct megasas_instance *instance, |
| struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) |
| { |
| int i; |
| int sge_count; |
| struct scatterlist *os_sgl; |
| |
| sge_count = scsi_dma_map(scp); |
| |
| if (sge_count) { |
| scsi_for_each_sg(scp, os_sgl, sge_count, i) { |
| mfi_sgl->sge_skinny[i].length = |
| cpu_to_le32(sg_dma_len(os_sgl)); |
| mfi_sgl->sge_skinny[i].phys_addr = |
| cpu_to_le64(sg_dma_address(os_sgl)); |
| mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); |
| } |
| } |
| return sge_count; |
| } |
| |
| /** |
| * megasas_get_frame_count - Computes the number of frames |
| * @frame_type : type of frame- io or pthru frame |
| * @sge_count : number of sg elements |
| * |
| * Returns the number of frames required for numnber of sge's (sge_count) |
| */ |
| |
| static u32 megasas_get_frame_count(struct megasas_instance *instance, |
| u8 sge_count, u8 frame_type) |
| { |
| int num_cnt; |
| int sge_bytes; |
| u32 sge_sz; |
| u32 frame_count = 0; |
| |
| sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : |
| sizeof(struct megasas_sge32); |
| |
| if (instance->flag_ieee) { |
| sge_sz = sizeof(struct megasas_sge_skinny); |
| } |
| |
| /* |
| * Main frame can contain 2 SGEs for 64-bit SGLs and |
| * 3 SGEs for 32-bit SGLs for ldio & |
| * 1 SGEs for 64-bit SGLs and |
| * 2 SGEs for 32-bit SGLs for pthru frame |
| */ |
| if (unlikely(frame_type == PTHRU_FRAME)) { |
| if (instance->flag_ieee == 1) { |
| num_cnt = sge_count - 1; |
| } else if (IS_DMA64) |
| num_cnt = sge_count - 1; |
| else |
| num_cnt = sge_count - 2; |
| } else { |
| if (instance->flag_ieee == 1) { |
| num_cnt = sge_count - 1; |
| } else if (IS_DMA64) |
| num_cnt = sge_count - 2; |
| else |
| num_cnt = sge_count - 3; |
| } |
| |
| if (num_cnt > 0) { |
| sge_bytes = sge_sz * num_cnt; |
| |
| frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + |
| ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; |
| } |
| /* Main frame */ |
| frame_count += 1; |
| |
| if (frame_count > 7) |
| frame_count = 8; |
| return frame_count; |
| } |
| |
| /** |
| * megasas_build_dcdb - Prepares a direct cdb (DCDB) command |
| * @instance: Adapter soft state |
| * @scp: SCSI command |
| * @cmd: Command to be prepared in |
| * |
| * This function prepares CDB commands. These are typcially pass-through |
| * commands to the devices. |
| */ |
| static int |
| megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| struct megasas_cmd *cmd) |
| { |
| u32 is_logical; |
| u32 device_id; |
| u16 flags = 0; |
| struct megasas_pthru_frame *pthru; |
| |
| is_logical = MEGASAS_IS_LOGICAL(scp->device); |
| device_id = MEGASAS_DEV_INDEX(scp); |
| pthru = (struct megasas_pthru_frame *)cmd->frame; |
| |
| if (scp->sc_data_direction == PCI_DMA_TODEVICE) |
| flags = MFI_FRAME_DIR_WRITE; |
| else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
| flags = MFI_FRAME_DIR_READ; |
| else if (scp->sc_data_direction == PCI_DMA_NONE) |
| flags = MFI_FRAME_DIR_NONE; |
| |
| if (instance->flag_ieee == 1) { |
| flags |= MFI_FRAME_IEEE; |
| } |
| |
| /* |
| * Prepare the DCDB frame |
| */ |
| pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; |
| pthru->cmd_status = 0x0; |
| pthru->scsi_status = 0x0; |
| pthru->target_id = device_id; |
| pthru->lun = scp->device->lun; |
| pthru->cdb_len = scp->cmd_len; |
| pthru->timeout = 0; |
| pthru->pad_0 = 0; |
| pthru->flags = cpu_to_le16(flags); |
| pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); |
| |
| memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); |
| |
| /* |
| * If the command is for the tape device, set the |
| * pthru timeout to the os layer timeout value. |
| */ |
| if (scp->device->type == TYPE_TAPE) { |
| if ((scp->request->timeout / HZ) > 0xFFFF) |
| pthru->timeout = cpu_to_le16(0xFFFF); |
| else |
| pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); |
| } |
| |
| /* |
| * Construct SGL |
| */ |
| if (instance->flag_ieee == 1) { |
| pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); |
| pthru->sge_count = megasas_make_sgl_skinny(instance, scp, |
| &pthru->sgl); |
| } else if (IS_DMA64) { |
| pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); |
| pthru->sge_count = megasas_make_sgl64(instance, scp, |
| &pthru->sgl); |
| } else |
| pthru->sge_count = megasas_make_sgl32(instance, scp, |
| &pthru->sgl); |
| |
| if (pthru->sge_count > instance->max_num_sge) { |
| dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n", |
| pthru->sge_count); |
| return 0; |
| } |
| |
| /* |
| * Sense info specific |
| */ |
| pthru->sense_len = SCSI_SENSE_BUFFERSIZE; |
| pthru->sense_buf_phys_addr_hi = |
| cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); |
| pthru->sense_buf_phys_addr_lo = |
| cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); |
| |
| /* |
| * Compute the total number of frames this command consumes. FW uses |
| * this number to pull sufficient number of frames from host memory. |
| */ |
| cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, |
| PTHRU_FRAME); |
| |
| return cmd->frame_count; |
| } |
| |
| /** |
| * megasas_build_ldio - Prepares IOs to logical devices |
| * @instance: Adapter soft state |
| * @scp: SCSI command |
| * @cmd: Command to be prepared |
| * |
| * Frames (and accompanying SGLs) for regular SCSI IOs use this function. |
| */ |
| static int |
| megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| struct megasas_cmd *cmd) |
| { |
| u32 device_id; |
| u8 sc = scp->cmnd[0]; |
| u16 flags = 0; |
| struct megasas_io_frame *ldio; |
| |
| device_id = MEGASAS_DEV_INDEX(scp); |
| ldio = (struct megasas_io_frame *)cmd->frame; |
| |
| if (scp->sc_data_direction == PCI_DMA_TODEVICE) |
| flags = MFI_FRAME_DIR_WRITE; |
| else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
| flags = MFI_FRAME_DIR_READ; |
| |
| if (instance->flag_ieee == 1) { |
| flags |= MFI_FRAME_IEEE; |
| } |
| |
| /* |
| * Prepare the Logical IO frame: 2nd bit is zero for all read cmds |
| */ |
| ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; |
| ldio->cmd_status = 0x0; |
| ldio->scsi_status = 0x0; |
| ldio->target_id = device_id; |
| ldio->timeout = 0; |
| ldio->reserved_0 = 0; |
| ldio->pad_0 = 0; |
| ldio->flags = cpu_to_le16(flags); |
| ldio->start_lba_hi = 0; |
| ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; |
| |
| /* |
| * 6-byte READ(0x08) or WRITE(0x0A) cdb |
| */ |
| if (scp->cmd_len == 6) { |
| ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); |
| ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | |
| ((u32) scp->cmnd[2] << 8) | |
| (u32) scp->cmnd[3]); |
| |
| ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); |
| } |
| |
| /* |
| * 10-byte READ(0x28) or WRITE(0x2A) cdb |
| */ |
| else if (scp->cmd_len == 10) { |
| ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | |
| ((u32) scp->cmnd[7] << 8)); |
| ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | |
| ((u32) scp->cmnd[3] << 16) | |
| ((u32) scp->cmnd[4] << 8) | |
| (u32) scp->cmnd[5]); |
| } |
| |
| /* |
| * 12-byte READ(0xA8) or WRITE(0xAA) cdb |
| */ |
| else if (scp->cmd_len == 12) { |
| ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | |
| ((u32) scp->cmnd[7] << 16) | |
| ((u32) scp->cmnd[8] << 8) | |
| (u32) scp->cmnd[9]); |
| |
| ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | |
| ((u32) scp->cmnd[3] << 16) | |
| ((u32) scp->cmnd[4] << 8) | |
| (u32) scp->cmnd[5]); |
| } |
| |
| /* |
| * 16-byte READ(0x88) or WRITE(0x8A) cdb |
| */ |
| else if (scp->cmd_len == 16) { |
| ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | |
| ((u32) scp->cmnd[11] << 16) | |
| ((u32) scp->cmnd[12] << 8) | |
| (u32) scp->cmnd[13]); |
| |
| ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | |
| ((u32) scp->cmnd[7] << 16) | |
| ((u32) scp->cmnd[8] << 8) | |
| (u32) scp->cmnd[9]); |
| |
| ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | |
| ((u32) scp->cmnd[3] << 16) | |
| ((u32) scp->cmnd[4] << 8) | |
| (u32) scp->cmnd[5]); |
| |
| } |
| |
| /* |
| * Construct SGL |
| */ |
| if (instance->flag_ieee) { |
| ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); |
| ldio->sge_count = megasas_make_sgl_skinny(instance, scp, |
| &ldio->sgl); |
| } else if (IS_DMA64) { |
| ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); |
| ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); |
| } else |
| ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); |
| |
| if (ldio->sge_count > instance->max_num_sge) { |
| dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n", |
| ldio->sge_count); |
| return 0; |
| } |
| |
| /* |
| * Sense info specific |
| */ |
| ldio->sense_len = SCSI_SENSE_BUFFERSIZE; |
| ldio->sense_buf_phys_addr_hi = 0; |
| ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); |
| |
| /* |
| * Compute the total number of frames this command consumes. FW uses |
| * this number to pull sufficient number of frames from host memory. |
| */ |
| cmd->frame_count = megasas_get_frame_count(instance, |
| ldio->sge_count, IO_FRAME); |
| |
| return cmd->frame_count; |
| } |
| |
| /** |
| * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD |
| * and whether it's RW or non RW |
| * @scmd: SCSI command |
| * |
| */ |
| inline int megasas_cmd_type(struct scsi_cmnd *cmd) |
| { |
| int ret; |
| |
| switch (cmd->cmnd[0]) { |
| case READ_10: |
| case WRITE_10: |
| case READ_12: |
| case WRITE_12: |
| case READ_6: |
| case WRITE_6: |
| case READ_16: |
| case WRITE_16: |
| ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? |
| READ_WRITE_LDIO : READ_WRITE_SYSPDIO; |
| break; |
| default: |
| ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? |
| NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO; |
| } |
| return ret; |
| } |
| |
| /** |
| * megasas_dump_pending_frames - Dumps the frame address of all pending cmds |
| * in FW |
| * @instance: Adapter soft state |
| */ |
| static inline void |
| megasas_dump_pending_frames(struct megasas_instance *instance) |
| { |
| struct megasas_cmd *cmd; |
| int i,n; |
| union megasas_sgl *mfi_sgl; |
| struct megasas_io_frame *ldio; |
| struct megasas_pthru_frame *pthru; |
| u32 sgcount; |
| u16 max_cmd = instance->max_fw_cmds; |
| |
| dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); |
| dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); |
| if (IS_DMA64) |
| dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); |
| else |
| dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); |
| |
| dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no); |
| for (i = 0; i < max_cmd; i++) { |
| cmd = instance->cmd_list[i]; |
| if (!cmd->scmd) |
| continue; |
| dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); |
| if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) { |
| ldio = (struct megasas_io_frame *)cmd->frame; |
| mfi_sgl = &ldio->sgl; |
| sgcount = ldio->sge_count; |
| dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," |
| " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", |
| instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, |
| le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), |
| le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); |
| } else { |
| pthru = (struct megasas_pthru_frame *) cmd->frame; |
| mfi_sgl = &pthru->sgl; |
| sgcount = pthru->sge_count; |
| dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " |
| "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", |
| instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, |
| pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), |
| le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); |
| } |
| if (megasas_dbg_lvl & MEGASAS_DBG_LVL) { |
| for (n = 0; n < sgcount; n++) { |
| if (IS_DMA64) |
| dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n", |
| le32_to_cpu(mfi_sgl->sge64[n].length), |
| le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); |
| else |
| dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n", |
| le32_to_cpu(mfi_sgl->sge32[n].length), |
| le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); |
| } |
| } |
| } /*for max_cmd*/ |
| dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); |
| for (i = 0; i < max_cmd; i++) { |
| |
| cmd = instance->cmd_list[i]; |
| |
| if (cmd->sync_cmd == 1) |
| dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); |
| } |
| dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no); |
| } |
| |
| u32 |
| megasas_build_and_issue_cmd(struct megasas_instance *instance, |
| struct scsi_cmnd *scmd) |
| { |
| struct megasas_cmd *cmd; |
| u32 frame_count; |
| |
| cmd = megasas_get_cmd(instance); |
| if (!cmd) |
| return SCSI_MLQUEUE_HOST_BUSY; |
| |
| /* |
| * Logical drive command |
| */ |
| if (megasas_cmd_type(scmd) == READ_WRITE_LDIO) |
| frame_count = megasas_build_ldio(instance, scmd, cmd); |
| else |
| frame_count = megasas_build_dcdb(instance, scmd, cmd); |
| |
| if (!frame_count) |
| goto out_return_cmd; |
| |
| cmd->scmd = scmd; |
| scmd->SCp.ptr = (char *)cmd; |
| |
| /* |
| * Issue the command to the FW |
| */ |
| atomic_inc(&instance->fw_outstanding); |
| |
| instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, |
| cmd->frame_count-1, instance->reg_set); |
| |
| return 0; |
| out_return_cmd: |
| megasas_return_cmd(instance, cmd); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| |
| /** |
| * megasas_queue_command - Queue entry point |
| * @scmd: SCSI command to be queued |
| * @done: Callback entry point |
| */ |
| static int |
| megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) |
| { |
| struct megasas_instance *instance; |
| struct MR_PRIV_DEVICE *mr_device_priv_data; |
| |
| instance = (struct megasas_instance *) |
| scmd->device->host->hostdata; |
| |
| if (instance->unload == 1) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scmd->scsi_done(scmd); |
| return 0; |
| } |
| |
| if (instance->issuepend_done == 0) |
| return SCSI_MLQUEUE_HOST_BUSY; |
| |
| |
| /* Check for an mpio path and adjust behavior */ |
| if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { |
| if (megasas_check_mpio_paths(instance, scmd) == |
| (DID_REQUEUE << 16)) { |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } else { |
| scmd->result = DID_NO_CONNECT << 16; |
| scmd->scsi_done(scmd); |
| return 0; |
| } |
| } |
| |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scmd->scsi_done(scmd); |
| return 0; |
| } |
| |
| mr_device_priv_data = scmd->device->hostdata; |
| if (!mr_device_priv_data) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scmd->scsi_done(scmd); |
| return 0; |
| } |
| |
| if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) |
| return SCSI_MLQUEUE_HOST_BUSY; |
| |
| if (mr_device_priv_data->tm_busy) |
| return SCSI_MLQUEUE_DEVICE_BUSY; |
| |
| |
| scmd->result = 0; |
| |
| if (MEGASAS_IS_LOGICAL(scmd->device) && |
| (scmd->device->id >= instance->fw_supported_vd_count || |
| scmd->device->lun)) { |
| scmd->result = DID_BAD_TARGET << 16; |
| goto out_done; |
| } |
| |
| if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) && |
| MEGASAS_IS_LOGICAL(scmd->device) && |
| (!instance->fw_sync_cache_support)) { |
| scmd->result = DID_OK << 16; |
| goto out_done; |
| } |
| |
| return instance->instancet->build_and_issue_cmd(instance, scmd); |
| |
| out_done: |
| scmd->scsi_done(scmd); |
| return 0; |
| } |
| |
| static struct megasas_instance *megasas_lookup_instance(u16 host_no) |
| { |
| int i; |
| |
| for (i = 0; i < megasas_mgmt_info.max_index; i++) { |
| |
| if ((megasas_mgmt_info.instance[i]) && |
| (megasas_mgmt_info.instance[i]->host->host_no == host_no)) |
| return megasas_mgmt_info.instance[i]; |
| } |
| |
| return NULL; |
| } |
| |
| /* |
| * megasas_set_dynamic_target_properties - |
| * Device property set by driver may not be static and it is required to be |
| * updated after OCR |
| * |
| * set tm_capable. |
| * set dma alignment (only for eedp protection enable vd). |
| * |
| * @sdev: OS provided scsi device |
| * |
| * Returns void |
| */ |
| void megasas_set_dynamic_target_properties(struct scsi_device *sdev, |
| bool is_target_prop) |
| { |
| u16 pd_index = 0, ld; |
| u32 device_id; |
| struct megasas_instance *instance; |
| struct fusion_context *fusion; |
| struct MR_PRIV_DEVICE *mr_device_priv_data; |
| struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; |
| struct MR_LD_RAID *raid; |
| struct MR_DRV_RAID_MAP_ALL *local_map_ptr; |
| |
| instance = megasas_lookup_instance(sdev->host->host_no); |
| fusion = instance->ctrl_context; |
| mr_device_priv_data = sdev->hostdata; |
| |
| if (!fusion || !mr_device_priv_data) |
| return; |
| |
| if (MEGASAS_IS_LOGICAL(sdev)) { |
| device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) |
| + sdev->id; |
| local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; |
| ld = MR_TargetIdToLdGet(device_id, local_map_ptr); |
| if (ld >= instance->fw_supported_vd_count) |
| return; |
| raid = MR_LdRaidGet(ld, local_map_ptr); |
| |
| if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) |
| blk_queue_update_dma_alignment(sdev->request_queue, 0x7); |
| |
| mr_device_priv_data->is_tm_capable = |
| raid->capability.tmCapable; |
| } else if (instance->use_seqnum_jbod_fp) { |
| pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + |
| sdev->id; |
| pd_sync = (void *)fusion->pd_seq_sync |
| [(instance->pd_seq_map_id - 1) & 1]; |
| mr_device_priv_data->is_tm_capable = |
| pd_sync->seq[pd_index].capability.tmCapable; |
| } |
| |
| if (is_target_prop && instance->tgt_prop->reset_tmo) { |
| /* |
| * If FW provides a target reset timeout value, driver will use |
| * it. If not set, fallback to default values. |
| */ |
| mr_device_priv_data->target_reset_tmo = |
| min_t(u8, instance->max_reset_tmo, |
| instance->tgt_prop->reset_tmo); |
| mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo; |
| } else { |
| mr_device_priv_data->target_reset_tmo = |
| MEGASAS_DEFAULT_TM_TIMEOUT; |
| mr_device_priv_data->task_abort_tmo = |
| MEGASAS_DEFAULT_TM_TIMEOUT; |
| } |
| } |
| |
| /* |
| * megasas_set_nvme_device_properties - |
| * set nomerges=2 |
| * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K). |
| * set maximum io transfer = MDTS of NVME device provided by MR firmware. |
| * |
| * MR firmware provides value in KB. Caller of this function converts |
| * kb into bytes. |
| * |
| * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size, |
| * MR firmware provides value 128 as (32 * 4K) = 128K. |
| * |
| * @sdev: scsi device |
| * @max_io_size: maximum io transfer size |
| * |
| */ |
| static inline void |
| megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size) |
| { |
| struct megasas_instance *instance; |
| u32 mr_nvme_pg_size; |
| |
| instance = (struct megasas_instance *)sdev->host->hostdata; |
| mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, |
| MR_DEFAULT_NVME_PAGE_SIZE); |
| |
| blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512)); |
| |
| blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue); |
| blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1); |
| } |
| |
| |
| /* |
| * megasas_set_static_target_properties - |
| * Device property set by driver are static and it is not required to be |
| * updated after OCR. |
| * |
| * set io timeout |
| * set device queue depth |
| * set nvme device properties. see - megasas_set_nvme_device_properties |
| * |
| * @sdev: scsi device |
| * @is_target_prop true, if fw provided target properties. |
| */ |
| static void megasas_set_static_target_properties(struct scsi_device *sdev, |
| bool is_target_prop) |
| { |
| u16 target_index = 0; |
| u8 interface_type; |
| u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN; |
| u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB; |
| u32 tgt_device_qd; |
| struct megasas_instance *instance; |
| struct MR_PRIV_DEVICE *mr_device_priv_data; |
| |
| instance = megasas_lookup_instance(sdev->host->host_no); |
| mr_device_priv_data = sdev->hostdata; |
| interface_type = mr_device_priv_data->interface_type; |
| |
| /* |
| * The RAID firmware may require extended timeouts. |
| */ |
| blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ); |
| |
| target_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; |
| |
| switch (interface_type) { |
| case SAS_PD: |
| device_qd = MEGASAS_SAS_QD; |
| break; |
| case SATA_PD: |
| device_qd = MEGASAS_SATA_QD; |
| break; |
| case NVME_PD: |
| device_qd = MEGASAS_NVME_QD; |
| break; |
| } |
| |
| if (is_target_prop) { |
| tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth); |
| if (tgt_device_qd && |
| (tgt_device_qd <= instance->host->can_queue)) |
| device_qd = tgt_device_qd; |
| |
| /* max_io_size_kb will be set to non zero for |
| * nvme based vd and syspd. |
| */ |
| max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb); |
| } |
| |
| if (instance->nvme_page_size && max_io_size_kb) |
| megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10)); |
| |
| scsi_change_queue_depth(sdev, device_qd); |
| |
| } |
| |
| |
| static int megasas_slave_configure(struct scsi_device *sdev) |
| { |
| u16 pd_index = 0; |
| struct megasas_instance *instance; |
| int ret_target_prop = DCMD_FAILED; |
| bool is_target_prop = false; |
| |
| instance = megasas_lookup_instance(sdev->host->host_no); |
| if (instance->pd_list_not_supported) { |
| if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) { |
| pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + |
| sdev->id; |
| if (instance->pd_list[pd_index].driveState != |
| MR_PD_STATE_SYSTEM) |
| return -ENXIO; |
| } |
| } |
| |
| mutex_lock(&instance->reset_mutex); |
| /* Send DCMD to Firmware and cache the information */ |
| if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev)) |
| megasas_get_pd_info(instance, sdev); |
| |
| /* Some ventura firmware may not have instance->nvme_page_size set. |
| * Do not send MR_DCMD_DRV_GET_TARGET_PROP |
| */ |
| if ((instance->tgt_prop) && (instance->nvme_page_size)) |
| ret_target_prop = megasas_get_target_prop(instance, sdev); |
| |
| is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; |
| megasas_set_static_target_properties(sdev, is_target_prop); |
| |
| /* This sdev property may change post OCR */ |
| megasas_set_dynamic_target_properties(sdev, is_target_prop); |
| |
| mutex_unlock(&instance->reset_mutex); |
| |
| return 0; |
| } |
| |
| static int megasas_slave_alloc(struct scsi_device *sdev) |
| { |
| u16 pd_index = 0; |
| struct megasas_instance *instance ; |
| struct MR_PRIV_DEVICE *mr_device_priv_data; |
| |
| instance = megasas_lookup_instance(sdev->host->host_no); |
| if (!MEGASAS_IS_LOGICAL(sdev)) { |
| /* |
| * Open the OS scan to the SYSTEM PD |
| */ |
| pd_index = |
| (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + |
| sdev->id; |
| if ((instance->pd_list_not_supported || |
| instance->pd_list[pd_index].driveState == |
| MR_PD_STATE_SYSTEM)) { |
| goto scan_target; |
| } |
| return -ENXIO; |
| } |
| |
| scan_target: |
| mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data), |
| GFP_KERNEL); |
| if (!mr_device_priv_data) |
| return -ENOMEM; |
| sdev->hostdata = mr_device_priv_data; |
| |
| atomic_set(&mr_device_priv_data->r1_ldio_hint, |
| instance->r1_ldio_hint_default); |
| return 0; |
| } |
| |
| static void megasas_slave_destroy(struct scsi_device *sdev) |
| { |
| kfree(sdev->hostdata); |
| sdev->hostdata = NULL; |
| } |
| |
| /* |
| * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a |
| * kill adapter |
| * @instance: Adapter soft state |
| * |
| */ |
| static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) |
| { |
| int i; |
| struct megasas_cmd *cmd_mfi; |
| struct megasas_cmd_fusion *cmd_fusion; |
| struct fusion_context *fusion = instance->ctrl_context; |
| |
| /* Find all outstanding ioctls */ |
| if (fusion) { |
| for (i = 0; i < instance->max_fw_cmds; i++) { |
| cmd_fusion = fusion->cmd_list[i]; |
| if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { |
| cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; |
| if (cmd_mfi->sync_cmd && |
| (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) { |
| cmd_mfi->frame->hdr.cmd_status = |
| MFI_STAT_WRONG_STATE; |
| megasas_complete_cmd(instance, |
| cmd_mfi, DID_OK); |
| } |
| } |
| } |
| } else { |
| for (i = 0; i < instance->max_fw_cmds; i++) { |
| cmd_mfi = instance->cmd_list[i]; |
| if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != |
| MFI_CMD_ABORT) |
| megasas_complete_cmd(instance, cmd_mfi, DID_OK); |
| } |
| } |
| } |
| |
| |
| void megaraid_sas_kill_hba(struct megasas_instance *instance) |
| { |
| /* Set critical error to block I/O & ioctls in case caller didn't */ |
| atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); |
| /* Wait 1 second to ensure IO or ioctls in build have posted */ |
| msleep(1000); |
| if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || |
| (instance->adapter_type != MFI_SERIES)) { |
| writel(MFI_STOP_ADP, &instance->reg_set->doorbell); |
| /* Flush */ |
| readl(&instance->reg_set->doorbell); |
| if (instance->requestorId && instance->peerIsPresent) |
| memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); |
| } else { |
| writel(MFI_STOP_ADP, |
| &instance->reg_set->inbound_doorbell); |
| } |
| /* Complete outstanding ioctls when adapter is killed */ |
| megasas_complete_outstanding_ioctls(instance); |
| } |
| |
| /** |
| * megasas_check_and_restore_queue_depth - Check if queue depth needs to be |
| * restored to max value |
| * @instance: Adapter soft state |
| * |
| */ |
| void |
| megasas_check_and_restore_queue_depth(struct megasas_instance *instance) |
| { |
| unsigned long flags; |
| |
| if (instance->flag & MEGASAS_FW_BUSY |
| && time_after(jiffies, instance->last_time + 5 * HZ) |
| && atomic_read(&instance->fw_outstanding) < |
| instance->throttlequeuedepth + 1) { |
| |
| spin_lock_irqsave(instance->host->host_lock, flags); |
| instance->flag &= ~MEGASAS_FW_BUSY; |
| |
| instance->host->can_queue = instance->cur_can_queue; |
| spin_unlock_irqrestore(instance->host->host_lock, flags); |
| } |
| } |
| |
| /** |
| * megasas_complete_cmd_dpc - Returns FW's controller structure |
| * @instance_addr: Address of adapter soft state |
| * |
| * Tasklet to complete cmds |
| */ |
| static void megasas_complete_cmd_dpc(unsigned long instance_addr) |
| { |
| u32 producer; |
| u32 consumer; |
| u32 context; |
| struct megasas_cmd *cmd; |
| struct megasas_instance *instance = |
| (struct megasas_instance *)instance_addr; |
| unsigned long flags; |
| |
| /* If we have already declared adapter dead, donot complete cmds */ |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) |
| return; |
| |
| spin_lock_irqsave(&instance->completion_lock, flags); |
| |
| producer = le32_to_cpu(*instance->producer); |
| consumer = le32_to_cpu(*instance->consumer); |
| |
| while (consumer != producer) { |
| context = le32_to_cpu(instance->reply_queue[consumer]); |
| if (context >= instance->max_fw_cmds) { |
| dev_err(&instance->pdev->dev, "Unexpected context value %x\n", |
| context); |
| BUG(); |
| } |
| |
| cmd = instance->cmd_list[context]; |
| |
| megasas_complete_cmd(instance, cmd, DID_OK); |
| |
| consumer++; |
| if (consumer == (instance->max_fw_cmds + 1)) { |
| consumer = 0; |
| } |
| } |
| |
| *instance->consumer = cpu_to_le32(producer); |
| |
| spin_unlock_irqrestore(&instance->completion_lock, flags); |
| |
| /* |
| * Check if we can restore can_queue |
| */ |
| megasas_check_and_restore_queue_depth(instance); |
| } |
| |
| static void megasas_sriov_heartbeat_handler(struct timer_list *t); |
| |
| /** |
| * megasas_start_timer - Initializes sriov heartbeat timer object |
| * @instance: Adapter soft state |
| * |
| */ |
| void megasas_start_timer(struct megasas_instance *instance) |
| { |
| struct timer_list *timer = &instance->sriov_heartbeat_timer; |
| |
| timer_setup(timer, megasas_sriov_heartbeat_handler, 0); |
| timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF; |
| add_timer(timer); |
| } |
| |
| static void |
| megasas_internal_reset_defer_cmds(struct megasas_instance *instance); |
| |
| static void |
| process_fw_state_change_wq(struct work_struct *work); |
| |
| void megasas_do_ocr(struct megasas_instance *instance) |
| { |
| if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || |
| (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { |
| *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); |
| } |
| instance->instancet->disable_intr(instance); |
| atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); |
| instance->issuepend_done = 0; |
| |
| atomic_set(&instance->fw_outstanding, 0); |
| megasas_internal_reset_defer_cmds(instance); |
| process_fw_state_change_wq(&instance->work_init); |
| } |
| |
| static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, |
| int initial) |
| { |
| struct megasas_cmd *cmd; |
| struct megasas_dcmd_frame *dcmd; |
| struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; |
| dma_addr_t new_affiliation_111_h; |
| int ld, retval = 0; |
| u8 thisVf; |
| |
| cmd = megasas_get_cmd(instance); |
| |
| if (!cmd) { |
| dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:" |
| "Failed to get cmd for scsi%d\n", |
| instance->host->host_no); |
| return -ENOMEM; |
| } |
| |
| dcmd = &cmd->frame->dcmd; |
| |
| if (!instance->vf_affiliation_111) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " |
| "affiliation for scsi%d\n", instance->host->host_no); |
| megasas_return_cmd(instance, cmd); |
| return -ENOMEM; |
| } |
| |
| if (initial) |
| memset(instance->vf_affiliation_111, 0, |
| sizeof(struct MR_LD_VF_AFFILIATION_111)); |
| else { |
| new_affiliation_111 = |
| pci_zalloc_consistent(instance->pdev, |
| sizeof(struct MR_LD_VF_AFFILIATION_111), |
| &new_affiliation_111_h); |
| if (!new_affiliation_111) { |
| dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " |
| "memory for new affiliation for scsi%d\n", |
| instance->host->host_no); |
| megasas_return_cmd(instance, cmd); |
| return -ENOMEM; |
| } |
| } |
| |
| memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| |
| dcmd->cmd = MFI_CMD_DCMD; |
| dcmd->cmd_status = MFI_STAT_INVALID_STATUS; |
| dcmd->sge_count = 1; |
| dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); |
| dcmd->timeout = 0; |
| dcmd->pad_0 = 0; |
| dcmd->data_xfer_len = |
| cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); |
| dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); |
| |
| if (initial) |
| dcmd->sgl.sge32[0].phys_addr = |
| cpu_to_le32(instance->vf_affiliation_111_h); |
| else |
| dcmd->sgl.sge32[0].phys_addr = |
| cpu_to_le32(new_affiliation_111_h); |
| |
| dcmd->sgl.sge32[0].length = cpu_to_le32( |
| sizeof(struct MR_LD_VF_AFFILIATION_111)); |
| |
| dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " |
| "scsi%d\n", instance->host->host_no); |
| |
| if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" |
| " failed with status 0x%x for scsi%d\n", |
| dcmd->cmd_status, instance->host->host_no); |
| retval = 1; /* Do a scan if we couldn't get affiliation */ |
| goto out; |
| } |
| |
| if (!initial) { |
| thisVf = new_affiliation_111->thisVf; |
| for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) |
| if (instance->vf_affiliation_111->map[ld].policy[thisVf] != |
| new_affiliation_111->map[ld].policy[thisVf]) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: " |
| "Got new LD/VF affiliation for scsi%d\n", |
| instance->host->host_no); |
| memcpy(instance->vf_affiliation_111, |
| new_affiliation_111, |
| sizeof(struct MR_LD_VF_AFFILIATION_111)); |
| retval = 1; |
| goto out; |
| } |
| } |
| out: |
| if (new_affiliation_111) { |
| pci_free_consistent(instance->pdev, |
| sizeof(struct MR_LD_VF_AFFILIATION_111), |
| new_affiliation_111, |
| new_affiliation_111_h); |
| } |
| |
| megasas_return_cmd(instance, cmd); |
| |
| return retval; |
| } |
| |
| static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, |
| int initial) |
| { |
| struct megasas_cmd *cmd; |
| struct megasas_dcmd_frame *dcmd; |
| struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; |
| struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; |
| dma_addr_t new_affiliation_h; |
| int i, j, retval = 0, found = 0, doscan = 0; |
| u8 thisVf; |
| |
| cmd = megasas_get_cmd(instance); |
| |
| if (!cmd) { |
| dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: " |
| "Failed to get cmd for scsi%d\n", |
| instance->host->host_no); |
| return -ENOMEM; |
| } |
| |
| dcmd = &cmd->frame->dcmd; |
| |
| if (!instance->vf_affiliation) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " |
| "affiliation for scsi%d\n", instance->host->host_no); |
| megasas_return_cmd(instance, cmd); |
| return -ENOMEM; |
| } |
| |
| if (initial) |
| memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * |
| sizeof(struct MR_LD_VF_AFFILIATION)); |
| else { |
| new_affiliation = |
| pci_zalloc_consistent(instance->pdev, |
| (MAX_LOGICAL_DRIVES + 1) * |
| sizeof(struct MR_LD_VF_AFFILIATION), |
| &new_affiliation_h); |
| if (!new_affiliation) { |
| dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " |
| "memory for new affiliation for scsi%d\n", |
| instance->host->host_no); |
| megasas_return_cmd(instance, cmd); |
| return -ENOMEM; |
| } |
| } |
| |
| memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| |
| dcmd->cmd = MFI_CMD_DCMD; |
| dcmd->cmd_status = MFI_STAT_INVALID_STATUS; |
| dcmd->sge_count = 1; |
| dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); |
| dcmd->timeout = 0; |
| dcmd->pad_0 = 0; |
| dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * |
| sizeof(struct MR_LD_VF_AFFILIATION)); |
| dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); |
| |
| if (initial) |
| dcmd->sgl.sge32[0].phys_addr = |
| cpu_to_le32(instance->vf_affiliation_h); |
| else |
| dcmd->sgl.sge32[0].phys_addr = |
| cpu_to_le32(new_affiliation_h); |
| |
| dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * |
| sizeof(struct MR_LD_VF_AFFILIATION)); |
| |
| dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " |
| "scsi%d\n", instance->host->host_no); |
| |
| |
| if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" |
| " failed with status 0x%x for scsi%d\n", |
| dcmd->cmd_status, instance->host->host_no); |
| retval = 1; /* Do a scan if we couldn't get affiliation */ |
| goto out; |
| } |
| |
| if (!initial) { |
| if (!new_affiliation->ldCount) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " |
| "affiliation for passive path for scsi%d\n", |
| instance->host->host_no); |
| retval = 1; |
| goto out; |
| } |
| newmap = new_affiliation->map; |
| savedmap = instance->vf_affiliation->map; |
| thisVf = new_affiliation->thisVf; |
| for (i = 0 ; i < new_affiliation->ldCount; i++) { |
| found = 0; |
| for (j = 0; j < instance->vf_affiliation->ldCount; |
| j++) { |
| if (newmap->ref.targetId == |
| savedmap->ref.targetId) { |
| found = 1; |
| if (newmap->policy[thisVf] != |
| savedmap->policy[thisVf]) { |
| doscan = 1; |
| goto out; |
| } |
| } |
| savedmap = (struct MR_LD_VF_MAP *) |
| ((unsigned char *)savedmap + |
| savedmap->size); |
| } |
| if (!found && newmap->policy[thisVf] != |
| MR_LD_ACCESS_HIDDEN) { |
| doscan = 1; |
| goto out; |
| } |
| newmap = (struct MR_LD_VF_MAP *) |
| ((unsigned char *)newmap + newmap->size); |
| } |
| |
| newmap = new_affiliation->map; |
| savedmap = instance->vf_affiliation->map; |
| |
| for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { |
| found = 0; |
| for (j = 0 ; j < new_affiliation->ldCount; j++) { |
| if (savedmap->ref.targetId == |
| newmap->ref.targetId) { |
| found = 1; |
| if (savedmap->policy[thisVf] != |
| newmap->policy[thisVf]) { |
| doscan = 1; |
| goto out; |
| } |
| } |
| newmap = (struct MR_LD_VF_MAP *) |
| ((unsigned char *)newmap + |
| newmap->size); |
| } |
| if (!found && savedmap->policy[thisVf] != |
| MR_LD_ACCESS_HIDDEN) { |
| doscan = 1; |
| goto out; |
| } |
| savedmap = (struct MR_LD_VF_MAP *) |
| ((unsigned char *)savedmap + |
| savedmap->size); |
| } |
| } |
| out: |
| if (doscan) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " |
| "affiliation for scsi%d\n", instance->host->host_no); |
| memcpy(instance->vf_affiliation, new_affiliation, |
| new_affiliation->size); |
| retval = 1; |
| } |
| |
| if (new_affiliation) |
| pci_free_consistent(instance->pdev, |
| (MAX_LOGICAL_DRIVES + 1) * |
| sizeof(struct MR_LD_VF_AFFILIATION), |
| new_affiliation, new_affiliation_h); |
| megasas_return_cmd(instance, cmd); |
| |
| return retval; |
| } |
| |
| /* This function will get the current SR-IOV LD/VF affiliation */ |
| static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, |
| int initial) |
| { |
| int retval; |
| |
| if (instance->PlasmaFW111) |
| retval = megasas_get_ld_vf_affiliation_111(instance, initial); |
| else |
| retval = megasas_get_ld_vf_affiliation_12(instance, initial); |
| return retval; |
| } |
| |
| /* This function will tell FW to start the SR-IOV heartbeat */ |
| int megasas_sriov_start_heartbeat(struct megasas_instance *instance, |
| int initial) |
| { |
| struct megasas_cmd *cmd; |
| struct megasas_dcmd_frame *dcmd; |
| int retval = 0; |
| |
| cmd = megasas_get_cmd(instance); |
| |
| if (!cmd) { |
| dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: " |
| "Failed to get cmd for scsi%d\n", |
| instance->host->host_no); |
| return -ENOMEM; |
| } |
| |
| dcmd = &cmd->frame->dcmd; |
| |
| if (initial) { |
| instance->hb_host_mem = |
| pci_zalloc_consistent(instance->pdev, |
| sizeof(struct MR_CTRL_HB_HOST_MEM), |
| &instance->hb_host_mem_h); |
| if (!instance->hb_host_mem) { |
| dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate" |
| " memory for heartbeat host memory for scsi%d\n", |
| instance->host->host_no); |
| retval = -ENOMEM; |
| goto out; |
| } |
| } |
| |
| memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| |
| dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); |
| dcmd->cmd = MFI_CMD_DCMD; |
| dcmd->cmd_status = MFI_STAT_INVALID_STATUS; |
| dcmd->sge_count = 1; |
| dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); |
| dcmd->timeout = 0; |
| dcmd->pad_0 = 0; |
| dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); |
| dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); |
| |
| megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h, |
| sizeof(struct MR_CTRL_HB_HOST_MEM)); |
| |
| dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n", |
| instance->host->host_no); |
| |
| if ((instance->adapter_type != MFI_SERIES) && |
| !instance->mask_interrupts) |
| retval = megasas_issue_blocked_cmd(instance, cmd, |
| MEGASAS_ROUTINE_WAIT_TIME_VF); |
| else |
| retval = megasas_issue_polled(instance, cmd); |
| |
| if (retval) { |
| dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" |
| "_MEM_ALLOC DCMD %s for scsi%d\n", |
| (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? |
| "timed out" : "failed", instance->host->host_no); |
| retval = 1; |
| } |
| |
| out: |
| megasas_return_cmd(instance, cmd); |
| |
| return retval; |
| } |
| |
| /* Handler for SR-IOV heartbeat */ |
| static void megasas_sriov_heartbeat_handler(struct timer_list *t) |
| { |
| struct megasas_instance *instance = |
| from_timer(instance, t, sriov_heartbeat_timer); |
| |
| if (instance->hb_host_mem->HB.fwCounter != |
| instance->hb_host_mem->HB.driverCounter) { |
| instance->hb_host_mem->HB.driverCounter = |
| instance->hb_host_mem->HB.fwCounter; |
| mod_timer(&instance->sriov_heartbeat_timer, |
| jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); |
| } else { |
| dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never " |
| "completed for scsi%d\n", instance->host->host_no); |
| schedule_work(&instance->work_init); |
| } |
| } |
| |
| /** |
| * megasas_wait_for_outstanding - Wait for all outstanding cmds |
| * @instance: Adapter soft state |
| * |
| * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to |
| * complete all its outstanding commands. Returns error if one or more IOs |
| * are pending after this time period. It also marks the controller dead. |
| */ |
| static int megasas_wait_for_outstanding(struct megasas_instance *instance) |
| { |
| int i, sl, outstanding; |
| u32 reset_index; |
| u32 wait_time = MEGASAS_RESET_WAIT_TIME; |
| unsigned long flags; |
| struct list_head clist_local; |
| struct megasas_cmd *reset_cmd; |
| u32 fw_state; |
| |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { |
| dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n", |
| __func__, __LINE__); |
| return FAILED; |
| } |
| |
| if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { |
| |
| INIT_LIST_HEAD(&clist_local); |
| spin_lock_irqsave(&instance->hba_lock, flags); |
| list_splice_init(&instance->internal_reset_pending_q, |
| &clist_local); |
| spin_unlock_irqrestore(&instance->hba_lock, flags); |
| |
| dev_notice(&instance->pdev->dev, "HBA reset wait ...\n"); |
| for (i = 0; i < wait_time; i++) { |
| msleep(1000); |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) |
| break; |
| } |
| |
| if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { |
| dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n"); |
| atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); |
| return FAILED; |
| } |
| |
| reset_index = 0; |
| while (!list_empty(&clist_local)) { |
| reset_cmd = list_entry((&clist_local)->next, |
| struct megasas_cmd, list); |
| list_del_init(&reset_cmd->list); |
| if (reset_cmd->scmd) { |
| reset_cmd->scmd->result = DID_REQUEUE << 16; |
| dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n", |
| reset_index, reset_cmd, |
| reset_cmd->scmd->cmnd[0]); |
| |
| reset_cmd->scmd->scsi_done(reset_cmd->scmd); |
| megasas_return_cmd(instance, reset_cmd); |
| } else if (reset_cmd->sync_cmd) { |
| dev_notice(&instance->pdev->dev, "%p synch cmds" |
| "reset queue\n", |
| reset_cmd); |
| |
| reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; |
| instance->instancet->fire_cmd(instance, |
| reset_cmd->frame_phys_addr, |
| 0, instance->reg_set); |
| } else { |
| dev_notice(&instance->pdev->dev, "%p unexpected" |
| "cmds lst\n", |
| reset_cmd); |
| } |
| reset_index++; |
| } |
| |
| return SUCCESS; |
| } |
| |
| for (i = 0; i < resetwaittime; i++) { |
| outstanding = atomic_read(&instance->fw_outstanding); |
| |
| if (!outstanding) |
| break; |
| |
| if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { |
| dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " |
| "commands to complete\n",i,outstanding); |
| /* |
| * Call cmd completion routine. Cmd to be |
| * be completed directly without depending on isr. |
| */ |
| megasas_complete_cmd_dpc((unsigned long)instance); |
| } |
| |
| msleep(1000); |
| } |
| |
| i = 0; |
| outstanding = atomic_read(&instance->fw_outstanding); |
| fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; |
| |
| if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) |
| goto no_outstanding; |
| |
| if (instance->disableOnlineCtrlReset) |
| goto kill_hba_and_failed; |
| do { |
| if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) { |
| dev_info(&instance->pdev->dev, |
| "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n", |
| __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding)); |
| if (i == 3) |
| goto kill_hba_and_failed; |
| megasas_do_ocr(instance); |
| |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { |
| dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n", |
| __func__, __LINE__); |
| return FAILED; |
| } |
| dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n", |
| __func__, __LINE__); |
| |
| for (sl = 0; sl < 10; sl++) |
| msleep(500); |
| |
| outstanding = atomic_read(&instance->fw_outstanding); |
| |
| fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; |
| if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) |
| goto no_outstanding; |
| } |
| i++; |
| } while (i <= 3); |
| |
| no_outstanding: |
| |
| dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n", |
| __func__, __LINE__); |
| return SUCCESS; |
| |
| kill_hba_and_failed: |
| |
| /* Reset not supported, kill adapter */ |
| dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d" |
| " disableOnlineCtrlReset %d fw_outstanding %d \n", |
| __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset, |
| atomic_read(&instance->fw_outstanding)); |
| megasas_dump_pending_frames(instance); |
| megaraid_sas_kill_hba(instance); |
| |
| return FAILED; |
| } |
| |
| /** |
| * megasas_generic_reset - Generic reset routine |
| * @scmd: Mid-layer SCSI command |
| * |
| * This routine implements a generic reset handler for device, bus and host |
| * reset requests. Device, bus and host specific reset handlers can use this |
| * function after they do their specific tasks. |
| */ |
| static int megasas_generic_reset(struct scsi_cmnd *scmd) |
| { |
| int ret_val; |
| struct megasas_instance *instance; |
| |
| instance = (struct megasas_instance *)scmd->device->host->hostdata; |
| |
| scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", |
| scmd->cmnd[0], scmd->retries); |
| |
| if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { |
| dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n"); |
| return FAILED; |
| } |
| |
| ret_val = megasas_wait_for_outstanding(instance); |
| if (ret_val == SUCCESS) |
| dev_notice(&instance->pdev->dev, "reset successful\n"); |
| else |
| dev_err(&instance->pdev->dev, "failed to do reset\n"); |
| |
| return ret_val; |
| } |
| |
| /** |
| * megasas_reset_timer - quiesce the adapter if required |
| * @scmd: scsi cmnd |
| * |
| * Sets the FW busy flag and reduces the host->can_queue if the |
| * cmd has not been completed within the timeout period. |
| */ |
| static enum |
| blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) |
| { |
| struct megasas_instance *instance; |
| unsigned long flags; |
| |
| if (time_after(jiffies, scmd->jiffies_at_alloc + |
| (scmd_timeout * 2) * HZ)) { |
| return BLK_EH_DONE; |
| } |
| |
| instance = (struct megasas_instance *)scmd->device->host->hostdata; |
| if (!(instance->flag & MEGASAS_FW_BUSY)) { |
| /* FW is busy, throttle IO */ |
| spin_lock_irqsave(instance->host->host_lock, flags); |
| |
| instance->host->can_queue = instance->throttlequeuedepth; |
| instance->last_time = jiffies; |
| instance->flag |= MEGASAS_FW_BUSY; |
| |
| spin_unlock_irqrestore(instance->host->host_lock, flags); |
| } |
| return BLK_EH_RESET_TIMER; |
| } |
| |
| /** |
| * megasas_dump_frame - This function will dump MPT/MFI frame |
| */ |
| static inline void |
| megasas_dump_frame(void *mpi_request, int sz) |
| { |
| int i; |
| __le32 *mfp = (__le32 *)mpi_request; |
| |
| printk(KERN_INFO "IO request frame:\n\t"); |
| for (i = 0; i < sz / sizeof(__le32); i++) { |
| if (i && ((i % 8) == 0)) |
| printk("\n\t"); |
| printk("%08x ", le32_to_cpu(mfp[i])); |
| } |
| printk("\n"); |
| } |
| |
| /** |
| * megasas_reset_bus_host - Bus & host reset handler entry point |
| */ |
| static int megasas_reset_bus_host(struct scsi_cmnd *scmd) |
| { |
| int ret; |
| struct megasas_instance *instance; |
| |
| instance = (struct megasas_instance *)scmd->device->host->hostdata; |
| |
| scmd_printk(KERN_INFO, scmd, |
| "Controller reset is requested due to IO timeout\n" |
| "SCSI command pointer: (%p)\t SCSI host state: %d\t" |
| " SCSI host busy: %d\t FW outstanding: %d\n", |
| scmd, scmd->device->host->shost_state, |
| scsi_host_busy(scmd->device->host), |
| atomic_read(&instance->fw_outstanding)); |
| |
| /* |
| * First wait for all commands to complete |
| */ |
| if (instance->adapter_type == MFI_SERIES) { |
| ret = megasas_generic_reset(scmd); |
| } else { |
| struct megasas_cmd_fusion *cmd; |
| cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr; |
| if (cmd) |
| megasas_dump_frame(cmd->io_request, |
| MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); |
| ret = megasas_reset_fusion(scmd->device->host, |
| SCSIIO_TIMEOUT_OCR); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * megasas_task_abort - Issues task abort request to firmware |
| * (supported only for fusion adapters) |
| * @scmd: SCSI command pointer |
| */ |
| static int megasas_task_abort(struct scsi_cmnd *scmd) |
| { |
| int ret; |
| struct megasas_instance *instance; |
| |
| instance = (struct megasas_instance *)scmd->device->host->hostdata; |
| |
| if (instance->adapter_type != MFI_SERIES) |
| ret = megasas_task_abort_fusion(scmd); |
| else { |
| sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n"); |
| ret = FAILED; |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * megasas_reset_target: Issues target reset request to firmware |
| * (supported only for fusion adapters) |
| * @scmd: SCSI command pointer |
| */ |
| static int megasas_reset_target(struct scsi_cmnd *scmd) |
| { |
| int ret; |
| struct megasas_instance *instance; |
| |
| instance = (struct megasas_instance *)scmd->device->host->hostdata; |
| |
| if (instance->adapter_type != MFI_SERIES) |
| ret = megasas_reset_target_fusion(scmd); |
| else { |
| sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n"); |
| ret = FAILED; |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * megasas_bios_param - Returns disk geometry for a disk |
| * @sdev: device handle |
| * @bdev: block device |
| * @capacity: drive capacity |
| * @geom: geometry parameters |
| */ |
| static int |
| megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| sector_t capacity, int geom[]) |
| { |
| int heads; |
| int sectors; |
| sector_t cylinders; |
| unsigned long tmp; |
| |
| /* Default heads (64) & sectors (32) */ |
| heads = 64; |
| sectors = 32; |
| |
| tmp = heads * sectors; |
| cylinders = capacity; |
| |
| sector_div(cylinders, tmp); |
| |
| /* |
| * Handle extended translation size for logical drives > 1Gb |
| */ |
| |
| if (capacity >= 0x200000) { |
| heads = 255; |
| sectors = 63; |
| tmp = heads*sectors; |
| cylinders = capacity; |
| sector_div(cylinders, tmp); |
| } |
| |
| geom[0] = heads; |
| geom[1] = sectors; |
| geom[2] = cylinders; |
| |
| return 0; |
| } |
| |
| static void megasas_aen_polling(struct work_struct *work); |
| |
| /** |
| * megasas_service_aen - Processes an event notification |
| * @instance: Adapter soft state |
| * @cmd: AEN command completed by the ISR |
| * |
| * For AEN, driver sends a command down to FW that is held by the FW till an |
| * event occurs. When an event of interest occurs, FW completes the command |
| * that it was previously holding. |
| * |
| * This routines sends SIGIO signal to processes that have registered with the |
| * driver for AEN. |
| */ |
| static void |
| megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) |
| { |
| unsigned long flags; |
| |
| /* |
| * Don't signal app if it is just an aborted previously registered aen |
| */ |
| if ((!cmd->abort_aen) && (instance->unload == 0)) { |
| spin_lock_irqsave(&poll_aen_lock, flags); |
| megasas_poll_wait_aen = 1; |
| spin_unlock_irqrestore(&poll_aen_lock, flags); |
| wake_up(&megasas_poll_wait); |
| kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); |
| } |
| else |
| cmd->abort_aen = 0; |
| |
| instance->aen_cmd = NULL; |
| |
| megasas_return_cmd(instance, cmd); |
| |
| if ((instance->unload == 0) && |
| ((instance->issuepend_done == 1))) { |
| struct megasas_aen_event *ev; |
| |
| ev = kzalloc(sizeof(*ev), GFP_ATOMIC); |
| if (!ev) { |
| dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); |
| } else { |
| ev->instance = instance; |
| instance->ev = ev; |
| INIT_DELAYED_WORK(&ev->hotplug_work, |
| megasas_aen_polling); |
| schedule_delayed_work(&ev->hotplug_work, 0); |
| } |
| } |
| } |
| |
| static ssize_t |
| megasas_fw_crash_buffer_store(struct device *cdev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct megasas_instance *instance = |
| (struct megasas_instance *) shost->hostdata; |
| int val = 0; |
| unsigned long flags; |
| |
| if (kstrtoint(buf, 0, &val) != 0) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&instance->crashdump_lock, flags); |
| instance->fw_crash_buffer_offset = val; |
| spin_unlock_irqrestore(&instance->crashdump_lock, flags); |
| return strlen(buf); |
| } |
| |
| static ssize_t |
| megasas_fw_crash_buffer_show(struct device *cdev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct megasas_instance *instance = |
| (struct megasas_instance *) shost->hostdata; |
| u32 size; |
| unsigned long buff_addr; |
| unsigned long dmachunk = CRASH_DMA_BUF_SIZE; |
| unsigned long chunk_left_bytes; |
| unsigned long src_addr; |
| unsigned long flags; |
| u32 buff_offset; |
| |
| spin_lock_irqsave(&instance->crashdump_lock, flags); |
| buff_offset = instance->fw_crash_buffer_offset; |
| if (!instance->crash_dump_buf && |
| !((instance->fw_crash_state == AVAILABLE) || |
| (instance->fw_crash_state == COPYING))) { |
| dev_err(&instance->pdev->dev, |
| "Firmware crash dump is not available\n"); |
| spin_unlock_irqrestore(&instance->crashdump_lock, flags); |
| return -EINVAL; |
| } |
| |
| buff_addr = (unsigned long) buf; |
| |
| if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { |
| dev_err(&instance->pdev->dev, |
| "Firmware crash dump offset is out of range\n"); |
| spin_unlock_irqrestore(&instance->crashdump_lock, flags); |
| return 0; |
| } |
| |
| size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; |
| chunk_left_bytes = dmachunk - (buff_offset % dmachunk); |
| size = (size > chunk_left_bytes) ? chunk_left_bytes : size; |
| size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; |
| |
| src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + |
| (buff_offset % dmachunk); |
| memcpy(buf, (void *)src_addr, size); |
| spin_unlock_irqrestore(&instance->crashdump_lock, flags); |
| |
| return size; |
| } |
| |
| static ssize_t |
| megasas_fw_crash_buffer_size_show(struct device *cdev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct megasas_instance *instance = |
| (struct megasas_instance *) shost->hostdata; |
| |
| return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) |
| ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); |
| } |
| |
| static ssize_t |
| megasas_fw_crash_state_store(struct device *cdev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct megasas_instance *instance = |
| (struct megasas_instance *) shost->hostdata; |
| int val = 0; |
| unsigned long flags; |
| |
| if (kstrtoint(buf, 0, &val) != 0) |
| return -EINVAL; |
| |
| if ((val <= AVAILABLE || val > COPY_ERROR)) { |
| dev_err(&instance->pdev->dev, "application updates invalid " |
| "firmware crash state\n"); |
| return -EINVAL; |
| } |
| |
| instance->fw_crash_state = val; |
| |
| if ((val == COPIED) || (val == COPY_ERROR)) { |
| spin_lock_irqsave(&instance->crashdump_lock, flags); |
| megasas_free_host_crash_buffer(instance); |
| spin_unlock_irqrestore(&instance->crashdump_lock, flags); |
| if (val == COPY_ERROR) |
| dev_info(&instance->pdev->dev, "application failed to " |
| "copy Firmware crash dump\n"); |
| else |
| dev_info(&instance->pdev->dev, "Firmware crash dump " |
| "copied successfully\n"); |
| } |
| return strlen(buf); |
| } |
| |
| static ssize_t |
| megasas_fw_crash_state_show(struct device *cdev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct megasas_instance *instance = |
| (struct |