/* * Linux MegaRAID driver for SAS based RAID controllers * * Copyright (c) 2009-2013 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 . * * FILE: megaraid_sas_fusion.c * * Authors: Avago Technologies * Sumant Patro * Adam Radford * Kashyap Desai * Sumit Saxena * * Send feedback to: megaraidlinux.pdl@avagotech.com * * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, * San Jose, California 95131 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "megaraid_sas_fusion.h" #include "megaraid_sas.h" extern void megasas_free_cmds(struct megasas_instance *instance); extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance *instance); extern void megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, u8 alt_status); int wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, int seconds); void megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); int megasas_alloc_cmds(struct megasas_instance *instance); int megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs); int megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd); void megasas_check_and_restore_queue_depth(struct megasas_instance *instance); int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); void megaraid_sas_kill_hba(struct megasas_instance *instance); extern u32 megasas_dbg_lvl; void megasas_sriov_heartbeat_handler(unsigned long instance_addr); int megasas_sriov_start_heartbeat(struct megasas_instance *instance, int initial); void megasas_start_timer(struct megasas_instance *instance, struct timer_list *timer, void *fn, unsigned long interval); extern struct megasas_mgmt_info megasas_mgmt_info; extern int resetwaittime; static void megasas_free_rdpq_fusion(struct megasas_instance *instance); static void megasas_free_reply_fusion(struct megasas_instance *instance); /** * megasas_enable_intr_fusion - Enables interrupts * @regs: MFI register set */ void megasas_enable_intr_fusion(struct megasas_instance *instance) { struct megasas_register_set __iomem *regs; regs = instance->reg_set; instance->mask_interrupts = 0; /* For Thunderbolt/Invader also clear intr on enable */ writel(~0, ®s->outbound_intr_status); readl(®s->outbound_intr_status); writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); /* Dummy readl to force pci flush */ readl(®s->outbound_intr_mask); } /** * megasas_disable_intr_fusion - Disables interrupt * @regs: MFI register set */ void megasas_disable_intr_fusion(struct megasas_instance *instance) { u32 mask = 0xFFFFFFFF; u32 status; struct megasas_register_set __iomem *regs; regs = instance->reg_set; instance->mask_interrupts = 1; writel(mask, ®s->outbound_intr_mask); /* Dummy readl to force pci flush */ status = readl(®s->outbound_intr_mask); } int megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs) { u32 status; /* * Check if it is our interrupt */ status = readl(®s->outbound_intr_status); if (status & 1) { writel(status, ®s->outbound_intr_status); readl(®s->outbound_intr_status); return 1; } if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) return 0; return 1; } /** * megasas_get_cmd_fusion - Get a command from the free pool * @instance: Adapter soft state * * Returns a blk_tag indexed mpt frame */ inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance *instance, u32 blk_tag) { struct fusion_context *fusion; fusion = instance->ctrl_context; return fusion->cmd_list[blk_tag]; } /** * megasas_return_cmd_fusion - Return a cmd to free command pool * @instance: Adapter soft state * @cmd: Command packet to be returned to free command pool */ inline void megasas_return_cmd_fusion(struct megasas_instance *instance, struct megasas_cmd_fusion *cmd) { cmd->scmd = NULL; memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); } /** * megasas_fire_cmd_fusion - Sends command to the FW */ static void megasas_fire_cmd_fusion(struct megasas_instance *instance, union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) { #if defined(writeq) && defined(CONFIG_64BIT) u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) | le32_to_cpu(req_desc->u.low)); writeq(req_data, &instance->reg_set->inbound_low_queue_port); #else unsigned long flags; spin_lock_irqsave(&instance->hba_lock, flags); writel(le32_to_cpu(req_desc->u.low), &instance->reg_set->inbound_low_queue_port); writel(le32_to_cpu(req_desc->u.high), &instance->reg_set->inbound_high_queue_port); spin_unlock_irqrestore(&instance->hba_lock, flags); #endif } /** * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool * @instance: Adapter soft state */ void megasas_free_cmds_fusion(struct megasas_instance *instance) { int i; struct fusion_context *fusion = instance->ctrl_context; struct megasas_cmd_fusion *cmd; /* SG, Sense */ for (i = 0; i < instance->max_fw_cmds; i++) { cmd = fusion->cmd_list[i]; if (cmd) { if (cmd->sg_frame) pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame, cmd->sg_frame_phys_addr); if (cmd->sense) pci_pool_free(fusion->sense_dma_pool, cmd->sense, cmd->sense_phys_addr); } } if (fusion->sg_dma_pool) { pci_pool_destroy(fusion->sg_dma_pool); fusion->sg_dma_pool = NULL; } if (fusion->sense_dma_pool) { pci_pool_destroy(fusion->sense_dma_pool); fusion->sense_dma_pool = NULL; } /* Reply Frame, Desc*/ if (instance->is_rdpq) megasas_free_rdpq_fusion(instance); else megasas_free_reply_fusion(instance); /* Request Frame, Desc*/ if (fusion->req_frames_desc) dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, fusion->req_frames_desc, fusion->req_frames_desc_phys); if (fusion->io_request_frames) pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames, fusion->io_request_frames_phys); if (fusion->io_request_frames_pool) { pci_pool_destroy(fusion->io_request_frames_pool); fusion->io_request_frames_pool = NULL; } /* cmd_list */ for (i = 0; i < instance->max_fw_cmds; i++) kfree(fusion->cmd_list[i]); kfree(fusion->cmd_list); } /** * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames * @instance: Adapter soft state * */ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance) { int i; u32 max_cmd; struct fusion_context *fusion; struct megasas_cmd_fusion *cmd; fusion = instance->ctrl_context; max_cmd = instance->max_fw_cmds; fusion->sg_dma_pool = pci_pool_create("mr_sg", instance->pdev, instance->max_chain_frame_sz, 4, 0); /* SCSI_SENSE_BUFFERSIZE = 96 bytes */ fusion->sense_dma_pool = pci_pool_create("mr_sense", instance->pdev, SCSI_SENSE_BUFFERSIZE, 64, 0); if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } /* * Allocate and attach a frame to each of the commands in cmd_list */ for (i = 0; i < max_cmd; i++) { cmd = fusion->cmd_list[i]; cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool, GFP_KERNEL, &cmd->sg_frame_phys_addr); cmd->sense = pci_pool_alloc(fusion->sense_dma_pool, GFP_KERNEL, &cmd->sense_phys_addr); if (!cmd->sg_frame || !cmd->sense) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } } return 0; } int megasas_alloc_cmdlist_fusion(struct megasas_instance *instance) { u32 max_cmd, i; struct fusion_context *fusion; fusion = instance->ctrl_context; max_cmd = instance->max_fw_cmds; /* * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. * Allocate the dynamic array first and then allocate individual * commands. */ fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *) * max_cmd, GFP_KERNEL); if (!fusion->cmd_list) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } for (i = 0; i < max_cmd; i++) { fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion), GFP_KERNEL); if (!fusion->cmd_list[i]) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } } return 0; } int megasas_alloc_request_fusion(struct megasas_instance *instance) { struct fusion_context *fusion; fusion = instance->ctrl_context; fusion->req_frames_desc = dma_alloc_coherent(&instance->pdev->dev, fusion->request_alloc_sz, &fusion->req_frames_desc_phys, GFP_KERNEL); if (!fusion->req_frames_desc) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } fusion->io_request_frames_pool = pci_pool_create("mr_ioreq", instance->pdev, fusion->io_frames_alloc_sz, 16, 0); if (!fusion->io_request_frames_pool) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } fusion->io_request_frames = pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL, &fusion->io_request_frames_phys); if (!fusion->io_request_frames) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } return 0; } int megasas_alloc_reply_fusion(struct megasas_instance *instance) { int i, count; struct fusion_context *fusion; union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; fusion = instance->ctrl_context; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; fusion->reply_frames_desc_pool = pci_pool_create("mr_reply", instance->pdev, fusion->reply_alloc_sz * count, 16, 0); if (!fusion->reply_frames_desc_pool) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } fusion->reply_frames_desc[0] = pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL, &fusion->reply_frames_desc_phys[0]); if (!fusion->reply_frames_desc[0]) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } reply_desc = fusion->reply_frames_desc[0]; for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) reply_desc->Words = cpu_to_le64(ULLONG_MAX); /* This is not a rdpq mode, but driver still populate * reply_frame_desc array to use same msix index in ISR path. */ for (i = 0; i < (count - 1); i++) fusion->reply_frames_desc[i + 1] = fusion->reply_frames_desc[i] + (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION); return 0; } int megasas_alloc_rdpq_fusion(struct megasas_instance *instance) { int i, j, count; struct fusion_context *fusion; union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; fusion = instance->ctrl_context; fusion->rdpq_virt = pci_alloc_consistent(instance->pdev, sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, &fusion->rdpq_phys); if (!fusion->rdpq_virt) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } memset(fusion->rdpq_virt, 0, sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION); count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; fusion->reply_frames_desc_pool = pci_pool_create("mr_rdpq", instance->pdev, fusion->reply_alloc_sz, 16, 0); if (!fusion->reply_frames_desc_pool) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } for (i = 0; i < count; i++) { fusion->reply_frames_desc[i] = pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL, &fusion->reply_frames_desc_phys[i]); if (!fusion->reply_frames_desc[i]) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } fusion->rdpq_virt[i].RDPQBaseAddress = fusion->reply_frames_desc_phys[i]; reply_desc = fusion->reply_frames_desc[i]; for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++) reply_desc->Words = cpu_to_le64(ULLONG_MAX); } return 0; } static void megasas_free_rdpq_fusion(struct megasas_instance *instance) { int i; struct fusion_context *fusion; fusion = instance->ctrl_context; for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) { if (fusion->reply_frames_desc[i]) pci_pool_free(fusion->reply_frames_desc_pool, fusion->reply_frames_desc[i], fusion->reply_frames_desc_phys[i]); } if (fusion->reply_frames_desc_pool) pci_pool_destroy(fusion->reply_frames_desc_pool); if (fusion->rdpq_virt) pci_free_consistent(instance->pdev, sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, fusion->rdpq_virt, fusion->rdpq_phys); } static void megasas_free_reply_fusion(struct megasas_instance *instance) { struct fusion_context *fusion; fusion = instance->ctrl_context; if (fusion->reply_frames_desc[0]) pci_pool_free(fusion->reply_frames_desc_pool, fusion->reply_frames_desc[0], fusion->reply_frames_desc_phys[0]); if (fusion->reply_frames_desc_pool) pci_pool_destroy(fusion->reply_frames_desc_pool); } /** * megasas_alloc_cmds_fusion - Allocates the command packets * @instance: Adapter soft state * * * Each frame has a 32-bit field called context. This context is used to get * back the megasas_cmd_fusion from the frame when a frame gets completed * In this driver, the 32 bit values are the indices into an array cmd_list. * This array is used only to look up the megasas_cmd_fusion given the context. * The free commands themselves are maintained in a linked list called cmd_pool. * * cmds are formed in the io_request and sg_frame members of the * megasas_cmd_fusion. The context field is used to get a request descriptor * and is used as SMID of the cmd. * SMID value range is from 1 to max_fw_cmds. */ int megasas_alloc_cmds_fusion(struct megasas_instance *instance) { int i; struct fusion_context *fusion; struct megasas_cmd_fusion *cmd; u32 offset; dma_addr_t io_req_base_phys; u8 *io_req_base; fusion = instance->ctrl_context; if (megasas_alloc_cmdlist_fusion(instance)) goto fail_exit; if (megasas_alloc_request_fusion(instance)) goto fail_exit; if (instance->is_rdpq) { if (megasas_alloc_rdpq_fusion(instance)) goto fail_exit; } else if (megasas_alloc_reply_fusion(instance)) goto fail_exit; /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */ io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; /* * Add all the commands to command pool (fusion->cmd_pool) */ /* SMID 0 is reserved. Set SMID/index from 1 */ for (i = 0; i < instance->max_fw_cmds; i++) { cmd = fusion->cmd_list[i]; offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); cmd->index = i + 1; cmd->scmd = NULL; cmd->sync_cmd_idx = (i >= instance->max_scsi_cmds) ? (i - instance->max_scsi_cmds) : (u32)ULONG_MAX; /* Set to Invalid */ cmd->instance = instance; cmd->io_request = (struct MPI2_RAID_SCSI_IO_REQUEST *) (io_req_base + offset); memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); cmd->io_request_phys_addr = io_req_base_phys + offset; } if (megasas_create_sg_sense_fusion(instance)) goto fail_exit; return 0; fail_exit: megasas_free_cmds_fusion(instance); return -ENOMEM; } /** * wait_and_poll - 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 0xFF before posting. */ int wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, int seconds) { int i; struct megasas_header *frame_hdr = &cmd->frame->hdr; struct fusion_context *fusion; u32 msecs = seconds * 1000; fusion = instance->ctrl_context; /* * Wait for cmd_status to change */ for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { rmb(); msleep(20); } if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) return DCMD_TIMEOUT; else if (frame_hdr->cmd_status == MFI_STAT_OK) return DCMD_SUCCESS; else return DCMD_FAILED; } /** * megasas_ioc_init_fusion - Initializes the FW * @instance: Adapter soft state * * Issues the IOC Init cmd */ int megasas_ioc_init_fusion(struct megasas_instance *instance) { struct megasas_init_frame *init_frame; struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL; dma_addr_t ioc_init_handle; struct megasas_cmd *cmd; u8 ret, cur_rdpq_mode; struct fusion_context *fusion; union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; int i; struct megasas_header *frame_hdr; const char *sys_info; MFI_CAPABILITIES *drv_ops; u32 scratch_pad_2; fusion = instance->ctrl_context; cmd = megasas_get_cmd(instance); if (!cmd) { dev_err(&instance->pdev->dev, "Could not allocate cmd for INIT Frame\n"); ret = 1; goto fail_get_cmd; } scratch_pad_2 = readl (&instance->reg_set->outbound_scratch_pad_2); cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0; if (instance->is_rdpq && !cur_rdpq_mode) { dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*" " from RDPQ mode to non RDPQ mode\n"); ret = 1; goto fail_fw_init; } IOCInitMessage = dma_alloc_coherent(&instance->pdev->dev, sizeof(struct MPI2_IOC_INIT_REQUEST), &ioc_init_handle, GFP_KERNEL); if (!IOCInitMessage) { dev_err(&instance->pdev->dev, "Could not allocate memory for " "IOCInitMessage\n"); ret = 1; goto fail_fw_init; } memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ? cpu_to_le64(fusion->rdpq_phys) : cpu_to_le64(fusion->reply_frames_desc_phys[0]); IOCInitMessage->MsgFlags = instance->is_rdpq ? MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); IOCInitMessage->HostMSIxVectors = instance->msix_vectors; init_frame = (struct megasas_init_frame *)cmd->frame; memset(init_frame, 0, MEGAMFI_FRAME_SIZE); frame_hdr = &cmd->frame->hdr; frame_hdr->cmd_status = 0xFF; frame_hdr->flags = cpu_to_le16( le16_to_cpu(frame_hdr->flags) | MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); init_frame->cmd = MFI_CMD_INIT; init_frame->cmd_status = 0xFF; drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations); /* driver support Extended MSIX */ if (fusion->adapter_type == INVADER_SERIES) drv_ops->mfi_capabilities.support_additional_msix = 1; /* driver supports HA / Remote LUN over Fast Path interface */ drv_ops->mfi_capabilities.support_fp_remote_lun = 1; drv_ops->mfi_capabilities.support_max_255lds = 1; drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1; drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1; if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN) drv_ops->mfi_capabilities.support_ext_io_size = 1; drv_ops->mfi_capabilities.support_fp_rlbypass = 1; /* Convert capability to LE32 */ cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); if (instance->system_info_buf && sys_info) { memcpy(instance->system_info_buf->systemId, sys_info, strlen(sys_info) > 64 ? 64 : strlen(sys_info)); instance->system_info_buf->systemIdLength = strlen(sys_info) > 64 ? 64 : strlen(sys_info); init_frame->system_info_lo = instance->system_info_h; init_frame->system_info_hi = 0; } init_frame->queue_info_new_phys_addr_hi = cpu_to_le32(upper_32_bits(ioc_init_handle)); init_frame->queue_info_new_phys_addr_lo = cpu_to_le32(lower_32_bits(ioc_init_handle)); init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); req_desc.MFAIo.RequestFlags = (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); /* * disable the intr before firing the init frame */ instance->instancet->disable_intr(instance); for (i = 0; i < (10 * 1000); i += 20) { if (readl(&instance->reg_set->doorbell) & 1) msleep(20); else break; } megasas_fire_cmd_fusion(instance, &req_desc); wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS); frame_hdr = &cmd->frame->hdr; if (frame_hdr->cmd_status != 0) { ret = 1; goto fail_fw_init; } dev_err(&instance->pdev->dev, "Init cmd success\n"); ret = 0; fail_fw_init: megasas_return_cmd(instance, cmd); if (IOCInitMessage) dma_free_coherent(&instance->pdev->dev, sizeof(struct MPI2_IOC_INIT_REQUEST), IOCInitMessage, ioc_init_handle); fail_get_cmd: return ret; } /** * megasas_sync_pd_seq_num - JBOD SEQ MAP * @instance: Adapter soft state * @pend: set to 1, if it is pended jbod map. * * Issue Jbod map to the firmware. If it is pended command, * issue command and return. If it is first instance of jbod map * issue and receive command. */ int megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { int ret = 0; u32 pd_seq_map_sz; struct megasas_cmd *cmd; struct megasas_dcmd_frame *dcmd; struct fusion_context *fusion = instance->ctrl_context; struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; dma_addr_t pd_seq_h; pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); cmd = megasas_get_cmd(instance); if (!cmd) { dev_err(&instance->pdev->dev, "Could not get mfi cmd. Fail from %s %d\n", __func__, __LINE__); return -ENOMEM; } dcmd = &cmd->frame->dcmd; memset(pd_sync, 0, pd_seq_map_sz); memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); dcmd->cmd = MFI_CMD_DCMD; dcmd->cmd_status = 0xFF; dcmd->sge_count = 1; dcmd->timeout = 0; dcmd->pad_0 = 0; dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(pd_seq_h); dcmd->sgl.sge32[0].length = cpu_to_le32(pd_seq_map_sz); if (pend) { dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE); instance->jbod_seq_cmd = cmd; instance->instancet->issue_dcmd(instance, cmd); return 0; } dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); /* Below code is only for non pended DCMD */ if (instance->ctrl_context && !instance->mask_interrupts) ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); else ret = megasas_issue_polled(instance, cmd); if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { dev_warn(&instance->pdev->dev, "driver supports max %d JBOD, but FW reports %d\n", MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); ret = -EINVAL; } if (ret == DCMD_TIMEOUT && instance->ctrl_context) megaraid_sas_kill_hba(instance); if (ret == DCMD_SUCCESS) instance->pd_seq_map_id++; megasas_return_cmd(instance, cmd); return ret; } /* * megasas_get_ld_map_info - Returns FW's ld_map structure * @instance: Adapter soft state * @pend: Pend the command or not * Issues an internal command (DCMD) to get the FW's controller PD * list structure. This information is mainly used to find out SYSTEM * supported by the FW. * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO * dcmd.mbox.b[0] - number of LDs being sync'd * dcmd.mbox.b[1] - 0 - complete command immediately. * - 1 - pend till config change * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and * uses extended struct MR_FW_RAID_MAP_EXT */ static int megasas_get_ld_map_info(struct megasas_instance *instance) { int ret = 0; struct megasas_cmd *cmd; struct megasas_dcmd_frame *dcmd; void *ci; dma_addr_t ci_h = 0; u32 size_map_info; struct fusion_context *fusion; cmd = megasas_get_cmd(instance); if (!cmd) { dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); return -ENOMEM; } fusion = instance->ctrl_context; if (!fusion) { megasas_return_cmd(instance, cmd); return -ENXIO; } dcmd = &cmd->frame->dcmd; size_map_info = fusion->current_map_sz; ci = (void *) fusion->ld_map[(instance->map_id & 1)]; ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; if (!ci) { dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); megasas_return_cmd(instance, cmd); return -ENOMEM; } memset(ci, 0, fusion->max_map_sz); memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); #if VD_EXT_DEBUG dev_dbg(&instance->pdev->dev, "%s sending MR_DCMD_LD_MAP_GET_INFO with size %d\n", __func__, cpu_to_le32(size_map_info)); #endif dcmd->cmd = MFI_CMD_DCMD; dcmd->cmd_status = 0xFF; dcmd->sge_count = 1; dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); dcmd->timeout = 0; dcmd->pad_0 = 0; dcmd->data_xfer_len = cpu_to_le32(size_map_info); dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info); if (instance->ctrl_context && !instance->mask_interrupts) ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); else ret = megasas_issue_polled(instance, cmd); if (ret == DCMD_TIMEOUT && instance->ctrl_context) megaraid_sas_kill_hba(instance); megasas_return_cmd(instance, cmd); return ret; } u8 megasas_get_map_info(struct megasas_instance *instance) { struct fusion_context *fusion = instance->ctrl_context; fusion->fast_path_io = 0; if (!megasas_get_ld_map_info(instance)) { if (MR_ValidateMapInfo(instance)) { fusion->fast_path_io = 1; return 0; } } return 1; } /* * megasas_sync_map_info - Returns FW's ld_map structure * @instance: Adapter soft state * * Issues an internal command (DCMD) to get the FW's controller PD * list structure. This information is mainly used to find out SYSTEM * supported by the FW. */ int megasas_sync_map_info(struct megasas_instance *instance) { int ret = 0, i; struct megasas_cmd *cmd; struct megasas_dcmd_frame *dcmd; u32 size_sync_info, num_lds; struct fusion_context *fusion; struct MR_LD_TARGET_SYNC *ci = NULL; struct MR_DRV_RAID_MAP_ALL *map; struct MR_LD_RAID *raid; struct MR_LD_TARGET_SYNC *ld_sync; dma_addr_t ci_h = 0; u32 size_map_info; cmd = megasas_get_cmd(instance); if (!cmd) { dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); return -ENOMEM; } fusion = instance->ctrl_context; if (!fusion) { megasas_return_cmd(instance, cmd); return 1; } map = fusion->ld_drv_map[instance->map_id & 1]; num_lds = le16_to_cpu(map->raidMap.ldCount); dcmd = &cmd->frame->dcmd; size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); ci = (struct MR_LD_TARGET_SYNC *) fusion->ld_map[(instance->map_id - 1) & 1]; memset(ci, 0, fusion->max_map_sz); ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; ld_sync = (struct MR_LD_TARGET_SYNC *)ci; for (i = 0; i < num_lds; i++, ld_sync++) { raid = MR_LdRaidGet(i, map); ld_sync->targetId = MR_GetLDTgtId(i, map); ld_sync->seqNum = raid->seqNum; } size_map_info = fusion->current_map_sz; dcmd->cmd = MFI_CMD_DCMD; dcmd->cmd_status = 0xFF; dcmd->sge_count = 1; dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE); dcmd->timeout = 0; dcmd->pad_0 = 0; dcmd->data_xfer_len = cpu_to_le32(size_map_info); dcmd->mbox.b[0] = num_lds; dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info); instance->map_update_cmd = cmd; instance->instancet->issue_dcmd(instance, cmd); return ret; } /* * meagasas_display_intel_branding - Display branding string * @instance: per adapter object * * Return nothing. */ static void megasas_display_intel_branding(struct megasas_instance *instance) { if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) return; switch (instance->pdev->device) { case PCI_DEVICE_ID_LSI_INVADER: switch (instance->pdev->subsystem_device) { case MEGARAID_INTEL_RS3DC080_SSDID: dev_info(&instance->pdev->dev, "scsi host %d: %s\n", instance->host->host_no, MEGARAID_INTEL_RS3DC080_BRANDING); break; case MEGARAID_INTEL_RS3DC040_SSDID: dev_info(&instance->pdev->dev, "scsi host %d: %s\n", instance->host->host_no, MEGARAID_INTEL_RS3DC040_BRANDING); break; case MEGARAID_INTEL_RS3SC008_SSDID: dev_info(&instance->pdev->dev, "scsi host %d: %s\n", instance->host->host_no, MEGARAID_INTEL_RS3SC008_BRANDING); break; case MEGARAID_INTEL_RS3MC044_SSDID: dev_info(&instance->pdev->dev, "scsi host %d: %s\n", instance->host->host_no, MEGARAID_INTEL_RS3MC044_BRANDING); break; default: break; } break; case PCI_DEVICE_ID_LSI_FURY: switch (instance->pdev->subsystem_device) { case MEGARAID_INTEL_RS3WC080_SSDID: dev_info(&instance->pdev->dev, "scsi host %d: %s\n", instance->host->host_no, MEGARAID_INTEL_RS3WC080_BRANDING); break; case MEGARAID_INTEL_RS3WC040_SSDID: dev_info(&instance->pdev->dev, "scsi host %d: %s\n", instance->host->host_no, MEGARAID_INTEL_RS3WC040_BRANDING); break; default: break; } break; case PCI_DEVICE_ID_LSI_CUTLASS_52: case PCI_DEVICE_ID_LSI_CUTLASS_53: switch (instance->pdev->subsystem_device) { case MEGARAID_INTEL_RMS3BC160_SSDID: dev_info(&instance->pdev->dev, "scsi host %d: %s\n", instance->host->host_no, MEGARAID_INTEL_RMS3BC160_BRANDING); break; default: break; } break; default: break; } } /** * megasas_init_adapter_fusion - Initializes the FW * @instance: Adapter soft state * * This is the main function for initializing firmware. */ u32 megasas_init_adapter_fusion(struct megasas_instance *instance) { struct megasas_register_set __iomem *reg_set; struct fusion_context *fusion; u32 max_cmd, scratch_pad_2; int i = 0, count; fusion = instance->ctrl_context; reg_set = instance->reg_set; /* * Get various operational parameters from status register */ instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; dev_info(&instance->pdev->dev, "firmware support max fw cmd\t: (%d)\n", instance->max_fw_cmds); if (!instance->is_rdpq) instance->max_fw_cmds = min_t(u16, instance->max_fw_cmds, 1024); /* * Reduce the max supported cmds by 1. This is to ensure that the * reply_q_sz (1 more than the max cmd that driver may send) * does not exceed max cmds that the FW can support */ instance->max_fw_cmds = instance->max_fw_cmds-1; /* * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames */ instance->max_mfi_cmds = MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; max_cmd = instance->max_fw_cmds; fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16); fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd; fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *(fusion->reply_q_depth); fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * (max_cmd + 1)); /* Extra 1 for SMID 0 */ scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2); /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, * Firmware support extended IO chain frame which is 4 times more than * legacy Firmware. * Legacy Firmware - Frame size is (8 * 128) = 1K * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K */ if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) instance->max_chain_frame_sz = ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; else instance->max_chain_frame_sz = ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", instance->max_chain_frame_sz, MEGASAS_CHAIN_FRAME_SZ_MIN); instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; } fusion->max_sge_in_main_msg = (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; fusion->max_sge_in_chain = instance->max_chain_frame_sz / sizeof(union MPI2_SGE_IO_UNION); instance->max_num_sge = rounddown_pow_of_two(fusion->max_sge_in_main_msg + fusion->max_sge_in_chain - 2); /* Used for pass thru MFI frame (DCMD) */ fusion->chain_offset_mfi_pthru = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; fusion->chain_offset_io_request = (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - sizeof(union MPI2_SGE_IO_UNION))/16; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; for (i = 0 ; i < count; i++) fusion->last_reply_idx[i] = 0; /* * For fusion adapters, 3 commands for IOCTL and 5 commands * for driver's internal DCMDs. */ instance->max_scsi_cmds = instance->max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS); sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); /* * Allocate memory for descriptors * Create a pool of commands */ if (megasas_alloc_cmds(instance)) goto fail_alloc_mfi_cmds; if (megasas_alloc_cmds_fusion(instance)) goto fail_alloc_cmds; if (megasas_ioc_init_fusion(instance)) goto fail_ioc_init; megasas_display_intel_branding(instance); if (megasas_get_ctrl_info(instance)) { dev_err(&instance->pdev->dev, "Could not get controller info. Fail from %s %d\n", __func__, __LINE__); goto fail_ioc_init; } instance->flag_ieee = 1; fusion->fast_path_io = 0; fusion->drv_map_pages = get_order(fusion->drv_map_sz); for (i = 0; i < 2; i++) { fusion->ld_map[i] = NULL; fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL, fusion->drv_map_pages); if (!fusion->ld_drv_map[i]) { dev_err(&instance->pdev->dev, "Could not allocate " "memory for local map info for %d pages\n", fusion->drv_map_pages); if (i == 1) free_pages((ulong)fusion->ld_drv_map[0], fusion->drv_map_pages); goto fail_ioc_init; } memset(fusion->ld_drv_map[i], 0, ((1 << PAGE_SHIFT) << fusion->drv_map_pages)); } for (i = 0; i < 2; i++) { fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, fusion->max_map_sz, &fusion->ld_map_phys[i], GFP_KERNEL); if (!fusion->ld_map[i]) { dev_err(&instance->pdev->dev, "Could not allocate memory " "for map info\n"); goto fail_map_info; } } if (!megasas_get_map_info(instance)) megasas_sync_map_info(instance); return 0; fail_map_info: if (i == 1) dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz, fusion->ld_map[0], fusion->ld_map_phys[0]); fail_ioc_init: megasas_free_cmds_fusion(instance); fail_alloc_cmds: megasas_free_cmds(instance); fail_alloc_mfi_cmds: return 1; } /** * map_cmd_status - Maps FW cmd status to OS cmd status * @cmd : Pointer to cmd * @status : status of cmd returned by FW * @ext_status : ext status of cmd returned by FW */ void map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status) { switch (status) { case MFI_STAT_OK: cmd->scmd->result = DID_OK << 16; break; case MFI_STAT_SCSI_IO_FAILED: case MFI_STAT_LD_INIT_IN_PROGRESS: cmd->scmd->result = (DID_ERROR << 16) | ext_status; break; case MFI_STAT_SCSI_DONE_WITH_ERROR: cmd->scmd->result = (DID_OK << 16) | ext_status; if (ext_status == SAM_STAT_CHECK_CONDITION) { memset(cmd->scmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); memcpy(cmd->scmd->sense_buffer, cmd->sense, SCSI_SENSE_BUFFERSIZE); cmd->scmd->result |= DRIVER_SENSE << 24; } break; case MFI_STAT_LD_OFFLINE: case MFI_STAT_DEVICE_NOT_FOUND: cmd->scmd->result = DID_BAD_TARGET << 16; break; case MFI_STAT_CONFIG_SEQ_MISMATCH: cmd->scmd->result = DID_IMM_RETRY << 16; break; default: dev_printk(KERN_DEBUG, &cmd->instance->pdev->dev, "FW status %#x\n", status); cmd->scmd->result = DID_ERROR << 16; break; } } /** * megasas_make_sgl_fusion - Prepares 32-bit SGL * @instance: Adapter soft state * @scp: SCSI command from the mid-layer * @sgl_ptr: SGL to be filled in * @cmd: cmd we are working on * * If successful, this function returns the number of SG elements. */ static int megasas_make_sgl_fusion(struct megasas_instance *instance, struct scsi_cmnd *scp, struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, struct megasas_cmd_fusion *cmd) { int i, sg_processed, sge_count; struct scatterlist *os_sgl; struct fusion_context *fusion; fusion = instance->ctrl_context; if (fusion->adapter_type == INVADER_SERIES) { struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; sgl_ptr_end += fusion->max_sge_in_main_msg - 1; sgl_ptr_end->Flags = 0; } sge_count = scsi_dma_map(scp); BUG_ON(sge_count < 0); if (sge_count > instance->max_num_sge || !sge_count) return sge_count; scsi_for_each_sg(scp, os_sgl, sge_count, i) { sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); sgl_ptr->Flags = 0; if (fusion->adapter_type == INVADER_SERIES) if (i == sge_count - 1) sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; sgl_ptr++; sg_processed = i + 1; if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && (sge_count > fusion->max_sge_in_main_msg)) { struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; if (fusion->adapter_type == INVADER_SERIES) { if ((le16_to_cpu(cmd->io_request->IoFlags) & MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) cmd->io_request->ChainOffset = fusion-> chain_offset_io_request; else cmd->io_request->ChainOffset = 0; } else cmd->io_request->ChainOffset = fusion->chain_offset_io_request; sg_chain = sgl_ptr; /* Prepare chain element */ sg_chain->NextChainOffset = 0; if (fusion->adapter_type == INVADER_SERIES) sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; else sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT | MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); sgl_ptr = (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; memset(sgl_ptr, 0, instance->max_chain_frame_sz); } } return sge_count; } /** * megasas_set_pd_lba - Sets PD LBA * @cdb: CDB * @cdb_len: cdb length * @start_blk: Start block of IO * * Used to set the PD LBA in CDB for FP IOs */ void megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) { struct MR_LD_RAID *raid; u32 ld; u64 start_blk = io_info->pdBlock; u8 *cdb = io_request->CDB.CDB32; u32 num_blocks = io_info->numBlocks; u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; /* Check if T10 PI (DIF) is enabled for this LD */ ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); raid = MR_LdRaidGet(ld, local_map_ptr); if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { memset(cdb, 0, sizeof(io_request->CDB.CDB32)); cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; else cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; /* LBA */ cdb[12] = (u8)((start_blk >> 56) & 0xff); cdb[13] = (u8)((start_blk >> 48) & 0xff); cdb[14] = (u8)((start_blk >> 40) & 0xff); cdb[15] = (u8)((start_blk >> 32) & 0xff); cdb[16] = (u8)((start_blk >> 24) & 0xff); cdb[17] = (u8)((start_blk >> 16) & 0xff); cdb[18] = (u8)((start_blk >> 8) & 0xff); cdb[19] = (u8)(start_blk & 0xff); /* Logical block reference tag */ io_request->CDB.EEDP32.PrimaryReferenceTag = cpu_to_be32(ref_tag); io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ /* Transfer length */ cdb[28] = (u8)((num_blocks >> 24) & 0xff); cdb[29] = (u8)((num_blocks >> 16) & 0xff); cdb[30] = (u8)((num_blocks >> 8) & 0xff); cdb[31] = (u8)(num_blocks & 0xff); /* set SCSI IO EEDPFlags */ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { io_request->EEDPFlags = cpu_to_le16( MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); } else { io_request->EEDPFlags = cpu_to_le16( MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); } io_request->Control |= cpu_to_le32((0x4 << 26)); io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); } else { /* Some drives don't support 16/12 byte CDB's, convert to 10 */ if (((cdb_len == 12) || (cdb_len == 16)) && (start_blk <= 0xffffffff)) { if (cdb_len == 16) { opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; flagvals = cdb[1]; groupnum = cdb[14]; control = cdb[15]; } else { opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; flagvals = cdb[1]; groupnum = cdb[10]; control = cdb[11]; } memset(cdb, 0, sizeof(io_request->CDB.CDB32)); cdb[0] = opcode; cdb[1] = flagvals; cdb[6] = groupnum; cdb[9] = control; /* Transfer length */ cdb[8] = (u8)(num_blocks & 0xff); cdb[7] = (u8)((num_blocks >> 8) & 0xff); io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ cdb_len = 10; } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { /* Convert to 16 byte CDB for large LBA's */ switch (cdb_len) { case 6: opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; control = cdb[5]; break; case 10: opcode = cdb[0] == READ_10 ? READ_16 : WRITE_16; flagvals = cdb[1]; groupnum = cdb[6]; control = cdb[9]; break; case 12: opcode = cdb[0] == READ_12 ? READ_16 : WRITE_16; flagvals = cdb[1]; groupnum = cdb[10]; control = cdb[11]; break; } memset(cdb, 0, sizeof(io_request->CDB.CDB32)); cdb[0] = opcode; cdb[1] = flagvals; cdb[14] = groupnum; cdb[15] = control; /* Transfer length */ cdb[13] = (u8)(num_blocks & 0xff); cdb[12] = (u8)((num_blocks >> 8) & 0xff); cdb[11] = (u8)((num_blocks >> 16) & 0xff); cdb[10] = (u8)((num_blocks >> 24) & 0xff); io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ cdb_len = 16; } /* Normal case, just load LBA here */ switch (cdb_len) { case 6: { u8 val = cdb[1] & 0xE0; cdb[3] = (u8)(start_blk & 0xff); cdb[2] = (u8)((start_blk >> 8) & 0xff); cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); break; } case 10: cdb[5] = (u8)(start_blk & 0xff); cdb[4] = (u8)((start_blk >> 8) & 0xff); cdb[3] = (u8)((start_blk >> 16) & 0xff); cdb[2] = (u8)((start_blk >> 24) & 0xff); break; case 12: cdb[5] = (u8)(start_blk & 0xff); cdb[4] = (u8)((start_blk >> 8) & 0xff); cdb[3] = (u8)((start_blk >> 16) & 0xff); cdb[2] = (u8)((start_blk >> 24) & 0xff); break; case 16: cdb[9] = (u8)(start_blk & 0xff); cdb[8] = (u8)((start_blk >> 8) & 0xff); cdb[7] = (u8)((start_blk >> 16) & 0xff); cdb[6] = (u8)((start_blk >> 24) & 0xff); cdb[5] = (u8)((start_blk >> 32) & 0xff); cdb[4] = (u8)((start_blk >> 40) & 0xff); cdb[3] = (u8)((start_blk >> 48) & 0xff); cdb[2] = (u8)((start_blk >> 56) & 0xff); break; } } } /** * megasas_build_ldio_fusion - Prepares IOs to devices * @instance: Adapter soft state * @scp: SCSI command * @cmd: Command to be prepared * * Prepares the io_request and chain elements (sg_frame) for IO * The IO can be for PD (Fast Path) or LD */ void megasas_build_ldio_fusion(struct megasas_instance *instance, struct scsi_cmnd *scp, struct megasas_cmd_fusion *cmd) { u8 fp_possible; u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; struct MPI2_RAID_SCSI_IO_REQUEST *io_request; union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; struct IO_REQUEST_INFO io_info; struct fusion_context *fusion; struct MR_DRV_RAID_MAP_ALL *local_map_ptr; u8 *raidLUN; device_id = MEGASAS_DEV_INDEX(scp); fusion = instance->ctrl_context; io_request = cmd->io_request; io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id); io_request->RaidContext.status = 0; io_request->RaidContext.exStatus = 0; req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; start_lba_lo = 0; start_lba_hi = 0; fp_possible = 0; /* * 6-byte READ(0x08) or WRITE(0x0A) cdb */ if (scp->cmd_len == 6) { datalength = (u32) scp->cmnd[4]; start_lba_lo = ((u32) scp->cmnd[1] << 16) | ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; start_lba_lo &= 0x1FFFFF; } /* * 10-byte READ(0x28) or WRITE(0x2A) cdb */ else if (scp->cmd_len == 10) { datalength = (u32) scp->cmnd[8] | ((u32) scp->cmnd[7] << 8); start_lba_lo = ((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) { datalength = ((u32) scp->cmnd[6] << 24) | ((u32) scp->cmnd[7] << 16) | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; start_lba_lo = ((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) { datalength = ((u32) scp->cmnd[10] << 24) | ((u32) scp->cmnd[11] << 16) | ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; start_lba_lo = ((u32) scp->cmnd[6] << 24) | ((u32) scp->cmnd[7] << 16) | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; start_lba_hi = ((u32) scp->cmnd[2] << 24) | ((u32) scp->cmnd[3] << 16) | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; } memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; io_info.numBlocks = datalength; io_info.ldTgtId = device_id; io_request->DataLength = cpu_to_le32(scsi_bufflen(scp)); if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) io_info.isRead = 1; local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >= instance->fw_supported_vd_count) || (!fusion->fast_path_io)) { io_request->RaidContext.regLockFlags = 0; fp_possible = 0; } else { if (MR_BuildRaidContext(instance, &io_info, &io_request->RaidContext, local_map_ptr, &raidLUN)) fp_possible = io_info.fpOkForIo; } /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU id by default, not CPU group id, otherwise all MSI-X queues won't be utilized */ cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? raw_smp_processor_id() % instance->msix_vectors : 0; if (fp_possible) { megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, local_map_ptr, start_lba_lo); io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; cmd->request_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); if (fusion->adapter_type == INVADER_SERIES) { if (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED) cmd->request_desc->SCSIIO.RequestFlags = (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); io_request->RaidContext.Type = MPI2_TYPE_CUDA; io_request->RaidContext.nseg = 0x1; io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); io_request->RaidContext.regLockFlags |= (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | MR_RL_FLAGS_SEQ_NUM_ENABLE); } if ((fusion->load_balance_info[device_id].loadBalanceFlag) && (io_info.isRead)) { io_info.devHandle = get_updated_dev_handle(instance, &fusion->load_balance_info[device_id], &io_info); scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; cmd->pd_r1_lb = io_info.pd_after_lb; } else scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; if ((raidLUN[0] == 1) && (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { instance->dev_handle = !(instance->dev_handle); io_info.devHandle = local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; } cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; io_request->DevHandle = io_info.devHandle; /* populate the LUN field */ memcpy(io_request->LUN, raidLUN, 8); } else { io_request->RaidContext.timeoutValue = cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); cmd->request_desc->SCSIIO.RequestFlags = (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); if (fusion->adapter_type == INVADER_SERIES) { if (io_info.do_fp_rlbypass || (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED)) cmd->request_desc->SCSIIO.RequestFlags = (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); io_request->RaidContext.Type = MPI2_TYPE_CUDA; io_request->RaidContext.regLockFlags |= (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | MR_RL_FLAGS_SEQ_NUM_ENABLE); io_request->RaidContext.nseg = 0x1; } io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; io_request->DevHandle = cpu_to_le16(device_id); } /* Not FP */ } /** * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk * @instance: Adapter soft state * @scp: SCSI command * @cmd: Command to be prepared * * Prepares the io_request frame for non-rw io cmds for vd. */ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) { u32 device_id; struct MPI2_RAID_SCSI_IO_REQUEST *io_request; u16 pd_index = 0; struct MR_DRV_RAID_MAP_ALL *local_map_ptr; struct fusion_context *fusion = instance->ctrl_context; u8 span, physArm; __le16 devHandle; u32 ld, arRef, pd; struct MR_LD_RAID *raid; struct RAID_CONTEXT *pRAID_Context; u8 fp_possible = 1; io_request = cmd->io_request; device_id = MEGASAS_DEV_INDEX(scmd); pd_index = MEGASAS_PD_INDEX(scmd); local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); /* get RAID_Context pointer */ pRAID_Context = &io_request->RaidContext; /* Check with FW team */ pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id); pRAID_Context->regLockRowLBA = 0; pRAID_Context->regLockLength = 0; if (fusion->fast_path_io && ( device_id < instance->fw_supported_vd_count)) { ld = MR_TargetIdToLdGet(device_id, local_map_ptr); if (ld >= instance->fw_supported_vd_count) fp_possible = 0; raid = MR_LdRaidGet(ld, local_map_ptr); if (!(raid->capability.fpNonRWCapable)) fp_possible = 0; } else fp_possible = 0; if (!fp_possible) { io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; io_request->DevHandle = cpu_to_le16(device_id); io_request->LUN[1] = scmd->device->lun; pRAID_Context->timeoutValue = cpu_to_le16 (scmd->request->timeout / HZ); cmd->request_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); } else { /* set RAID context values */ pRAID_Context->configSeqNum = raid->seqNum; pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ; pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd); /* get the DevHandle for the PD (since this is fpNonRWCapable, this is a single disk RAID0) */ span = physArm = 0; arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); pd = MR_ArPdGet(arRef, physArm, local_map_ptr); devHandle = MR_PdDevHandleGet(pd, local_map_ptr); /* build request descriptor */ cmd->request_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); cmd->request_desc->SCSIIO.DevHandle = devHandle; /* populate the LUN field */ memcpy(io_request->LUN, raid->LUN, 8); /* build the raidScsiIO structure */ io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; io_request->DevHandle = devHandle; } } /** * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd * @instance: Adapter soft state * @scp: SCSI command * @cmd: Command to be prepared * @fp_possible: parameter to detect fast path or firmware path io. * * Prepares the io_request frame for rw/non-rw io cmds for syspds */ static void megasas_build_syspd_fusion(struct megasas_instance *instance, struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, u8 fp_possible) { u32 device_id; struct MPI2_RAID_SCSI_IO_REQUEST *io_request; u16 pd_index = 0; u16 os_timeout_value; u16 timeout_limit; struct MR_DRV_RAID_MAP_ALL *local_map_ptr; struct RAID_CONTEXT *pRAID_Context; struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; struct fusion_context *fusion = instance->ctrl_context; pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; device_id = MEGASAS_DEV_INDEX(scmd); pd_index = MEGASAS_PD_INDEX(scmd); os_timeout_value = scmd->request->timeout / HZ; io_request = cmd->io_request; /* get RAID_Context pointer */ pRAID_Context = &io_request->RaidContext; pRAID_Context->regLockFlags = 0; pRAID_Context->regLockRowLBA = 0; pRAID_Context->regLockLength = 0; io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); io_request->LUN[1] = scmd->device->lun; pRAID_Context->RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; /* If FW supports PD sequence number */ if (instance->use_seqnum_jbod_fp && instance->pd_list[pd_index].driveType == TYPE_DISK) { /* TgtId must be incremented by 255 as jbod seq number is index * below raid map */ pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1)); pRAID_Context->configSeqNum = pd_sync->seq[pd_index].seqNum; io_request->DevHandle = pd_sync->seq[pd_index].devHandle; pRAID_Context->regLockFlags |= (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA); } else if (fusion->fast_path_io) { pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id); pRAID_Context->configSeqNum = 0; local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; io_request->DevHandle = local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; } else { /* Want to send all IO via FW path */ pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id); pRAID_Context->configSeqNum = 0; io_request->DevHandle = cpu_to_le16(0xFFFF); } cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? (raw_smp_processor_id() % instance->msix_vectors) : 0; if (!fp_possible) { /* system pd firmware path */ io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; cmd->request_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value); pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id); } else { /* system pd Fast Path */ io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; timeout_limit = (scmd->device->type == TYPE_DISK) ? 255 : 0xFFFF; pRAID_Context->timeoutValue = cpu_to_le16((os_timeout_value > timeout_limit) ? timeout_limit : os_timeout_value); if (fusion->adapter_type == INVADER_SERIES) { pRAID_Context->Type = MPI2_TYPE_CUDA; pRAID_Context->nseg = 0x1; io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); } cmd->request_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); } } /** * megasas_build_io_fusion - Prepares IOs to devices * @instance: Adapter soft state * @scp: SCSI command * @cmd: Command to be prepared * * Invokes helper functions to prepare request frames * and sets flags appropriate for IO/Non-IO cmd */ int megasas_build_io_fusion(struct megasas_instance *instance, struct scsi_cmnd *scp, struct megasas_cmd_fusion *cmd) { u16 sge_count; u8 cmd_type; struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; /* Zero out some fields so they don't get reused */ memset(io_request->LUN, 0x0, 8); io_request->CDB.EEDP32.PrimaryReferenceTag = 0; io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; io_request->EEDPFlags = 0; io_request->Control = 0; io_request->EEDPBlockSize = 0; io_request->ChainOffset = 0; io_request->RaidContext.RAIDFlags = 0; io_request->RaidContext.Type = 0; io_request->RaidContext.nseg = 0; memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); /* * Just the CDB length,rest of the Flags are zero * This will be modified for FP in build_ldio_fusion */ io_request->IoFlags = cpu_to_le16(scp->cmd_len); switch (cmd_type = megasas_cmd_type(scp)) { case READ_WRITE_LDIO: megasas_build_ldio_fusion(instance, scp, cmd); break; case NON_READ_WRITE_LDIO: megasas_build_ld_nonrw_fusion(instance, scp, cmd); break; case READ_WRITE_SYSPDIO: case NON_READ_WRITE_SYSPDIO: if (instance->secure_jbod_support && (cmd_type == NON_READ_WRITE_SYSPDIO)) megasas_build_syspd_fusion(instance, scp, cmd, 0); else megasas_build_syspd_fusion(instance, scp, cmd, 1); break; default: break; } /* * Construct SGL */ sge_count = megasas_make_sgl_fusion(instance, scp, (struct MPI25_IEEE_SGE_CHAIN64 *) &io_request->SGL, cmd); if (sge_count > instance->max_num_sge) { dev_err(&instance->pdev->dev, "Error. sge_count (0x%x) exceeds " "max (0x%x) allowed\n", sge_count, instance->max_num_sge); return 1; } /* numSGE store lower 8 bit of sge_count. * numSGEExt store higher 8 bit of sge_count */ io_request->RaidContext.numSGE = sge_count; io_request->RaidContext.numSGEExt = (u8)(sge_count >> 8); io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); if (scp->sc_data_direction == PCI_DMA_TODEVICE) io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); io_request->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr); io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; cmd->scmd = scp; scp->SCp.ptr = (char *)cmd; return 0; } union MEGASAS_REQUEST_DESCRIPTOR_UNION * megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) { u8 *p; struct fusion_context *fusion; if (index >= instance->max_fw_cmds) { dev_err(&instance->pdev->dev, "Invalid SMID (0x%x)request for " "descriptor for scsi%d\n", index, instance->host->host_no); return NULL; } fusion = instance->ctrl_context; p = fusion->req_frames_desc +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index; return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; } /** * megasas_build_and_issue_cmd_fusion -Main routine for building and * issuing non IOCTL cmd * @instance: Adapter soft state * @scmd: pointer to scsi cmd from OS */ static u32 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, struct scsi_cmnd *scmd) { struct megasas_cmd_fusion *cmd; union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; u32 index; struct fusion_context *fusion; fusion = instance->ctrl_context; cmd = megasas_get_cmd_fusion(instance, scmd->request->tag); index = cmd->index; req_desc = megasas_get_request_descriptor(instance, index-1); if (!req_desc) return 1; req_desc->Words = 0; cmd->request_desc = req_desc; if (megasas_build_io_fusion(instance, scmd, cmd)) { megasas_return_cmd_fusion(instance, cmd); dev_err(&instance->pdev->dev, "Error building command\n"); cmd->request_desc = NULL; return 1; } req_desc = cmd->request_desc; req_desc->SCSIIO.SMID = cpu_to_le16(index); if (cmd->io_request->ChainOffset != 0 && cmd->io_request->ChainOffset != 0xF) dev_err(&instance->pdev->dev, "The chain offset value is not " "correct : %x\n", cmd->io_request->ChainOffset); /* * Issue the command to the FW */ atomic_inc(&instance->fw_outstanding); megasas_fire_cmd_fusion(instance, req_desc); return 0; } /** * complete_cmd_fusion - Completes command * @instance: Adapter soft state * Completes all commands that is in reply descriptor queue */ int complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) { union MPI2_REPLY_DESCRIPTORS_UNION *desc; struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; struct fusion_context *fusion; struct megasas_cmd *cmd_mfi; struct megasas_cmd_fusion *cmd_fusion; u16 smid, num_completed; u8 reply_descript_type; u32 status, extStatus, device_id; union desc_value d_val; struct LD_LOAD_BALANCE_INFO *lbinfo; int threshold_reply_count = 0; struct scsi_cmnd *scmd_local = NULL; struct MR_TASK_MANAGE_REQUEST *mr_tm_req; struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; fusion = instance->ctrl_context; if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) return IRQ_HANDLED; desc = fusion->reply_frames_desc[MSIxIndex] + fusion->last_reply_idx[MSIxIndex]; reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; d_val.word = desc->Words; reply_descript_type = reply_desc->ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) return IRQ_NONE; num_completed = 0; while (d_val.u.low != cpu_to_le32(UINT_MAX) && d_val.u.high != cpu_to_le32(UINT_MAX)) { smid = le16_to_cpu(reply_desc->SMID); cmd_fusion = fusion->cmd_list[smid - 1]; scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) cmd_fusion->io_request; if (cmd_fusion->scmd) cmd_fusion->scmd->SCp.ptr = NULL; scmd_local = cmd_fusion->scmd; status = scsi_io_req->RaidContext.status; extStatus = scsi_io_req->RaidContext.exStatus; switch (scsi_io_req->Function) { case MPI2_FUNCTION_SCSI_TASK_MGMT: mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_tm_req->TmRequest; dev_dbg(&instance->pdev->dev, "TM completion:" "type: 0x%x TaskMID: 0x%x\n", mpi_tm_req->TaskType, mpi_tm_req->TaskMID); complete(&cmd_fusion->done); break; case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ /* Update load balancing info */ device_id = MEGASAS_DEV_INDEX(scmd_local); lbinfo = &fusion->load_balance_info[device_id]; if (cmd_fusion->scmd->SCp.Status & MEGASAS_LOAD_BALANCE_FLAG) { atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; } if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) { if (megasas_dbg_lvl == 5) dev_err(&instance->pdev->dev, "\nFAST Path " "IO Success\n"); } /* Fall thru and complete IO */ case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ /* Map the FW Cmd Status */ map_cmd_status(cmd_fusion, status, extStatus); scsi_io_req->RaidContext.status = 0; scsi_io_req->RaidContext.exStatus = 0; megasas_return_cmd_fusion(instance, cmd_fusion); scsi_dma_unmap(scmd_local); scmd_local->scsi_done(scmd_local); atomic_dec(&instance->fw_outstanding); break; case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; /* Poll mode. Dummy free. * In case of Interrupt mode, caller has reverse check. */ if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; megasas_return_cmd(instance, cmd_mfi); } else megasas_complete_cmd(instance, cmd_mfi, DID_OK); break; } fusion->last_reply_idx[MSIxIndex]++; if (fusion->last_reply_idx[MSIxIndex] >= fusion->reply_q_depth) fusion->last_reply_idx[MSIxIndex] = 0; desc->Words = cpu_to_le64(ULLONG_MAX); num_completed++; threshold_reply_count++; /* Get the next reply descriptor */ if (!fusion->last_reply_idx[MSIxIndex]) desc = fusion->reply_frames_desc[MSIxIndex]; else desc++; reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; d_val.word = desc->Words; reply_descript_type = reply_desc->ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) break; /* * Write to reply post host index register after completing threshold * number of reply counts and still there are more replies in reply queue * pending to be completed */ if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) { if (fusion->adapter_type == INVADER_SERIES) writel(((MSIxIndex & 0x7) << 24) | fusion->last_reply_idx[MSIxIndex], instance->reply_post_host_index_addr[MSIxIndex/8]); else writel((MSIxIndex << 24) | fusion->last_reply_idx[MSIxIndex], instance->reply_post_host_index_addr[0]); threshold_reply_count = 0; } } if (!num_completed) return IRQ_NONE; wmb(); if (fusion->adapter_type == INVADER_SERIES) writel(((MSIxIndex & 0x7) << 24) | fusion->last_reply_idx[MSIxIndex], instance->reply_post_host_index_addr[MSIxIndex/8]); else writel((MSIxIndex << 24) | fusion->last_reply_idx[MSIxIndex], instance->reply_post_host_index_addr[0]); megasas_check_and_restore_queue_depth(instance); return IRQ_HANDLED; } /** * megasas_complete_cmd_dpc_fusion - Completes command * @instance: Adapter soft state * * Tasklet to complete cmds */ void megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) { struct megasas_instance *instance = (struct megasas_instance *)instance_addr; unsigned long flags; u32 count, MSIxIndex; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; /* If we have already declared adapter dead, donot complete cmds */ spin_lock_irqsave(&instance->hba_lock, flags); if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { spin_unlock_irqrestore(&instance->hba_lock, flags); return; } spin_unlock_irqrestore(&instance->hba_lock, flags); for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) complete_cmd_fusion(instance, MSIxIndex); } /** * megasas_isr_fusion - isr entry point */ irqreturn_t megasas_isr_fusion(int irq, void *devp) { struct megasas_irq_context *irq_context = devp; struct megasas_instance *instance = irq_context->instance; u32 mfiStatus, fw_state, dma_state; if (instance->mask_interrupts) return IRQ_NONE; if (!instance->msix_vectors) { mfiStatus = instance->instancet->clear_intr(instance->reg_set); if (!mfiStatus) return IRQ_NONE; } /* If we are resetting, bail */ if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { instance->instancet->clear_intr(instance->reg_set); return IRQ_HANDLED; } if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { instance->instancet->clear_intr(instance->reg_set); /* If we didn't complete any commands, check for FW fault */ fw_state = instance->instancet->read_fw_status_reg( instance->reg_set) & MFI_STATE_MASK; dma_state = instance->instancet->read_fw_status_reg (instance->reg_set) & MFI_STATE_DMADONE; if (instance->crash_dump_drv_support && instance->crash_dump_app_support) { /* Start collecting crash, if DMA bit is done */ if ((fw_state == MFI_STATE_FAULT) && dma_state) schedule_work(&instance->crash_init); else if (fw_state == MFI_STATE_FAULT) schedule_work(&instance->work_init); } else if (fw_state == MFI_STATE_FAULT) { dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt" "for scsi%d\n", instance->host->host_no); schedule_work(&instance->work_init); } } return IRQ_HANDLED; } /** * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru * @instance: Adapter soft state * mfi_cmd: megasas_cmd pointer * */ u8 build_mpt_mfi_pass_thru(struct megasas_instance *instance, struct megasas_cmd *mfi_cmd) { struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; struct MPI2_RAID_SCSI_IO_REQUEST *io_req; struct megasas_cmd_fusion *cmd; struct fusion_context *fusion; struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; fusion = instance->ctrl_context; cmd = megasas_get_cmd_fusion(instance, instance->max_scsi_cmds + mfi_cmd->index); /* Save the smid. To be used for returning the cmd */ mfi_cmd->context.smid = cmd->index; /* * For cmds where the flag is set, store the flag and check * on completion. For cmds with this flag, don't call * megasas_complete_cmd */ if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; io_req = cmd->io_request; if (fusion->adapter_type == INVADER_SERIES) { struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; sgl_ptr_end += fusion->max_sge_in_main_msg - 1; sgl_ptr_end->Flags = 0; } mpi25_ieee_chain = (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; io_req->ChainOffset = fusion->chain_offset_mfi_pthru; mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz); return 0; } /** * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd * @instance: Adapter soft state * @cmd: mfi cmd to build * */ union MEGASAS_REQUEST_DESCRIPTOR_UNION * build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) { union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; u16 index; if (build_mpt_mfi_pass_thru(instance, cmd)) { dev_err(&instance->pdev->dev, "Couldn't build MFI pass thru cmd\n"); return NULL; } index = cmd->context.smid; req_desc = megasas_get_request_descriptor(instance, index - 1); if (!req_desc) return NULL; req_desc->Words = 0; req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); req_desc->SCSIIO.SMID = cpu_to_le16(index); return req_desc; } /** * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd * @instance: Adapter soft state * @cmd: mfi cmd pointer * */ int megasas_issue_dcmd_fusion(struct megasas_instance *instance, struct megasas_cmd *cmd) { union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; req_desc = build_mpt_cmd(instance, cmd); if (!req_desc) { dev_info(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return DCMD_NOT_FIRED; } megasas_fire_cmd_fusion(instance, req_desc); return DCMD_SUCCESS; } /** * megasas_release_fusion - Reverses the FW initialization * @instance: Adapter soft state */ void megasas_release_fusion(struct megasas_instance *instance) { megasas_free_cmds(instance); megasas_free_cmds_fusion(instance); iounmap(instance->reg_set); pci_release_selected_regions(instance->pdev, instance->bar); } /** * megasas_read_fw_status_reg_fusion - returns the current FW status value * @regs: MFI register set */ static u32 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) { return readl(&(regs)->outbound_scratch_pad); } /** * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware * @instance: Controller's soft instance * return: Number of allocated host crash buffers */ static void megasas_alloc_host_crash_buffer(struct megasas_instance *instance) { unsigned int i; instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE); for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { instance->crash_buf[i] = (void *)__get_free_pages(GFP_KERNEL, instance->crash_buf_pages); if (!instance->crash_buf[i]) { dev_info(&instance->pdev->dev, "Firmware crash dump " "memory allocation failed at index %d\n", i); break; } memset(instance->crash_buf[i], 0, ((1 << PAGE_SHIFT) << instance->crash_buf_pages)); } instance->drv_buf_alloc = i; } /** * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware * @instance: Controller's soft instance */ void megasas_free_host_crash_buffer(struct megasas_instance *instance) { unsigned int i ; for (i = 0; i < instance->drv_buf_alloc; i++) { if (instance->crash_buf[i]) free_pages((ulong)instance->crash_buf[i], instance->crash_buf_pages); } instance->drv_buf_index = 0; instance->drv_buf_alloc = 0; instance->fw_crash_state = UNAVAILABLE; instance->fw_crash_buffer_size = 0; } /** * megasas_adp_reset_fusion - For controller reset * @regs: MFI register set */ static int megasas_adp_reset_fusion(struct megasas_instance *instance, struct megasas_register_set __iomem *regs) { u32 host_diag, abs_state, retry; /* Now try to reset the chip */ writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); /* Check that the diag write enable (DRWE) bit is on */ host_diag = readl(&instance->reg_set->fusion_host_diag); retry = 0; while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { msleep(100); host_diag = readl(&instance->reg_set->fusion_host_diag); if (retry++ == 100) { dev_warn(&instance->pdev->dev, "Host diag unlock failed from %s %d\n", __func__, __LINE__); break; } } if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) return -1; /* Send chip reset command */ writel(host_diag | HOST_DIAG_RESET_ADAPTER, &instance->reg_set->fusion_host_diag); msleep(3000); /* Make sure reset adapter bit is cleared */ host_diag = readl(&instance->reg_set->fusion_host_diag); retry = 0; while (host_diag & HOST_DIAG_RESET_ADAPTER) { msleep(100); host_diag = readl(&instance->reg_set->fusion_host_diag); if (retry++ == 1000) { dev_warn(&instance->pdev->dev, "Diag reset adapter never cleared %s %d\n", __func__, __LINE__); break; } } if (host_diag & HOST_DIAG_RESET_ADAPTER) return -1; abs_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; retry = 0; while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { msleep(100); abs_state = instance->instancet-> read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; } if (abs_state <= MFI_STATE_FW_INIT) { dev_warn(&instance->pdev->dev, "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", abs_state, __func__, __LINE__); return -1; } return 0; } /** * megasas_check_reset_fusion - For controller reset check * @regs: MFI register set */ static int megasas_check_reset_fusion(struct megasas_instance *instance, struct megasas_register_set __iomem *regs) { return 0; } /* This function waits for outstanding commands on fusion to complete */ int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, int reason, int *convert) { int i, outstanding, retval = 0, hb_seconds_missed = 0; u32 fw_state; for (i = 0; i < resetwaittime; i++) { /* Check if firmware is in fault state */ fw_state = instance->instancet->read_fw_status_reg( instance->reg_set) & MFI_STATE_MASK; if (fw_state == MFI_STATE_FAULT) { dev_warn(&instance->pdev->dev, "Found FW in FAULT state," " will reset adapter scsi%d.\n", instance->host->host_no); retval = 1; goto out; } if (reason == MFI_IO_TIMEOUT_OCR) { dev_info(&instance->pdev->dev, "MFI IO is timed out, initiating OCR\n"); retval = 1; goto out; } /* If SR-IOV VF mode & heartbeat timeout, don't wait */ if (instance->requestorId && !reason) { retval = 1; goto out; } /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ if (instance->requestorId && reason) { 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; hb_seconds_missed = 0; } else { hb_seconds_missed++; if (hb_seconds_missed == (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { dev_warn(&instance->pdev->dev, "SR-IOV:" " Heartbeat never completed " " while polling during I/O " " timeout handling for " "scsi%d.\n", instance->host->host_no); *convert = 1; retval = 1; goto out; } } } outstanding = atomic_read(&instance->fw_outstanding); if (!outstanding) goto out; if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " "commands to complete for scsi%d\n", i, outstanding, instance->host->host_no); megasas_complete_cmd_dpc_fusion( (unsigned long)instance); } msleep(1000); } if (atomic_read(&instance->fw_outstanding)) { dev_err(&instance->pdev->dev, "pending commands remain after waiting, " "will reset adapter scsi%d.\n", instance->host->host_no); retval = 1; } out: return retval; } void megasas_reset_reply_desc(struct megasas_instance *instance) { int i, j, count; struct fusion_context *fusion; union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; fusion = instance->ctrl_context; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; for (i = 0 ; i < count ; i++) { fusion->last_reply_idx[i] = 0; reply_desc = fusion->reply_frames_desc[i]; for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) reply_desc->Words = cpu_to_le64(ULLONG_MAX); } } /* * megasas_refire_mgmt_cmd : Re-fire management commands * @instance: Controller's soft instance */ void megasas_refire_mgmt_cmd(struct megasas_instance *instance) { int j; struct megasas_cmd_fusion *cmd_fusion; struct fusion_context *fusion; struct megasas_cmd *cmd_mfi; union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; u16 smid; bool refire_cmd = 0; fusion = instance->ctrl_context; /* Re-fire management commands. * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. */ for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { cmd_fusion = fusion->cmd_list[j]; cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; smid = le16_to_cpu(cmd_mfi->context.smid); if (!smid) continue; req_desc = megasas_get_request_descriptor (instance, smid - 1); refire_cmd = req_desc && ((cmd_mfi->frame->dcmd.opcode != cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) && (cmd_mfi->frame->dcmd.opcode != cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO))) && !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); if (refire_cmd) megasas_fire_cmd_fusion(instance, req_desc); else megasas_return_cmd(instance, cmd_mfi); } } /* * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device * @instance: per adapter struct * @channel: the channel assigned by the OS * @id: the id assigned by the OS * * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED */ static int megasas_track_scsiio(struct megasas_instance *instance, int id, int channel) { int i, found = 0; struct megasas_cmd_fusion *cmd_fusion; struct fusion_context *fusion; fusion = instance->ctrl_context; for (i = 0 ; i < instance->max_scsi_cmds; i++) { cmd_fusion = fusion->cmd_list[i]; if (cmd_fusion->scmd && (cmd_fusion->scmd->device->id == id && cmd_fusion->scmd->device->channel == channel)) { dev_info(&instance->pdev->dev, "SCSI commands pending to target" "channel %d id %d \tSMID: 0x%x\n", channel, id, cmd_fusion->index); scsi_print_command(cmd_fusion->scmd); found = 1; break; } } return found ? FAILED : SUCCESS; } /** * megasas_tm_response_code - translation of device response code * @ioc: per adapter object * @mpi_reply: MPI reply returned by firmware * * Return nothing. */ static void megasas_tm_response_code(struct megasas_instance *instance, struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) { char *desc; switch (mpi_reply->ResponseCode) { case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: desc = "task management request completed"; break; case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: desc = "invalid frame"; break; case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: desc = "task management request not supported"; break; case MPI2_SCSITASKMGMT_RSP_TM_FAILED: desc = "task management request failed"; break; case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: desc = "task management request succeeded"; break; case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: desc = "invalid lun"; break; case 0xA: desc = "overlapped tag attempted"; break; case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: desc = "task queued, however not sent to target"; break; default: desc = "unknown"; break; } dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", mpi_reply->ResponseCode, desc); dev_dbg(&instance->pdev->dev, "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", mpi_reply->TerminationCount, mpi_reply->DevHandle, mpi_reply->Function, mpi_reply->TaskType, mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); } /** * megasas_issue_tm - main routine for sending tm requests * @instance: per adapter struct * @device_handle: device handle * @channel: the channel assigned by the OS * @id: the id assigned by the OS * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) * @smid_task: smid assigned to the task * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF * Context: user * * MegaRaid use MPT interface for Task Magement request. * A generic API for sending task management requests to firmware. * * Return SUCCESS or FAILED. */ static int megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, uint channel, uint id, u16 smid_task, u8 type) { struct MR_TASK_MANAGE_REQUEST *mr_request; struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; unsigned long timeleft; struct megasas_cmd_fusion *cmd_fusion; struct megasas_cmd *cmd_mfi; union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; struct fusion_context *fusion; struct megasas_cmd_fusion *scsi_lookup; int rc; struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; fusion = instance->ctrl_context; cmd_mfi = megasas_get_cmd(instance); if (!cmd_mfi) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); return -ENOMEM; } cmd_fusion = megasas_get_cmd_fusion(instance, instance->max_scsi_cmds + cmd_mfi->index); /* Save the smid. To be used for returning the cmd */ cmd_mfi->context.smid = cmd_fusion->index; req_desc = megasas_get_request_descriptor(instance, (cmd_fusion->index - 1)); if (!req_desc) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); megasas_return_cmd(instance, cmd_mfi); return -ENOMEM; } cmd_fusion->request_desc = req_desc; req_desc->Words = 0; scsi_lookup = fusion->cmd_list[smid_task - 1]; mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; mpi_request->DevHandle = cpu_to_le16(device_handle); mpi_request->TaskType = type; mpi_request->TaskMID = cpu_to_le16(smid_task); mpi_request->LUN[1] = 0; req_desc = cmd_fusion->request_desc; req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); req_desc->HighPriority.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); req_desc->HighPriority.MSIxIndex = 0; req_desc->HighPriority.LMID = 0; req_desc->HighPriority.Reserved1 = 0; if (channel < MEGASAS_MAX_PD_CHANNELS) mr_request->tmReqFlags.isTMForPD = 1; else mr_request->tmReqFlags.isTMForLD = 1; init_completion(&cmd_fusion->done); megasas_fire_cmd_fusion(instance, req_desc); timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ); if (!timeleft) { dev_err(&instance->pdev->dev, "task mgmt type 0x%x timed out\n", type); cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE; mutex_unlock(&instance->reset_mutex); rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); mutex_lock(&instance->reset_mutex); return rc; } mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; megasas_tm_response_code(instance, mpi_reply); megasas_return_cmd(instance, cmd_mfi); rc = SUCCESS; switch (type) { case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: if (scsi_lookup->scmd == NULL) break; else { instance->instancet->disable_intr(instance); msleep(1000); megasas_complete_cmd_dpc_fusion ((unsigned long)instance); instance->instancet->enable_intr(instance); if (scsi_lookup->scmd == NULL) break; } rc = FAILED; break; case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) break; instance->instancet->disable_intr(instance); msleep(1000); megasas_complete_cmd_dpc_fusion ((unsigned long)instance); rc = megasas_track_scsiio(instance, id, channel); instance->instancet->enable_intr(instance); break; case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: break; default: rc = FAILED; break; } return rc; } /* * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI * @instance: per adapter struct * * Return Non Zero index, if SMID found in outstanding commands */ static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) { int i, ret = 0; struct megasas_instance *instance; struct megasas_cmd_fusion *cmd_fusion; struct fusion_context *fusion; instance = (struct megasas_instance *)scmd->device->host->hostdata; fusion = instance->ctrl_context; for (i = 0; i < instance->max_scsi_cmds; i++) { cmd_fusion = fusion->cmd_list[i]; if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { scmd_printk(KERN_NOTICE, scmd, "Abort request is for" " SMID: %d\n", cmd_fusion->index); ret = cmd_fusion->index; break; } } return ret; } /* * megasas_get_tm_devhandle - Get devhandle for TM request * @sdev- OS provided scsi device * * Returns- devhandle/targetID of SCSI device */ static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) { u16 pd_index = 0; u32 device_id; struct megasas_instance *instance; struct fusion_context *fusion; struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; u16 devhandle = (u16)ULONG_MAX; instance = (struct megasas_instance *)sdev->host->hostdata; fusion = instance->ctrl_context; if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) { 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]; devhandle = pd_sync->seq[pd_index].devHandle; } else sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" " without JBOD MAP support from %s %d\n", __func__, __LINE__); } else { device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; devhandle = device_id; } return devhandle; } /* * megasas_task_abort_fusion : SCSI task abort function for fusion adapters * @scmd : pointer to scsi command object * * Return SUCCESS, if command aborted else FAILED */ int megasas_task_abort_fusion(struct scsi_cmnd *scmd) { struct megasas_instance *instance; u16 smid, devhandle; struct fusion_context *fusion; int ret; struct MR_PRIV_DEVICE *mr_device_priv_data; mr_device_priv_data = scmd->device->hostdata; instance = (struct megasas_instance *)scmd->device->host->hostdata; fusion = instance->ctrl_context; if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," "SCSI host:%d\n", instance->host->host_no); ret = FAILED; return ret; } if (!mr_device_priv_data) { sdev_printk(KERN_INFO, scmd->device, "device been deleted! " "scmd(%p)\n", scmd); scmd->result = DID_NO_CONNECT << 16; ret = SUCCESS; goto out; } if (!mr_device_priv_data->is_tm_capable) { ret = FAILED; goto out; } mutex_lock(&instance->reset_mutex); smid = megasas_fusion_smid_lookup(scmd); if (!smid) { ret = SUCCESS; scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" " issued is not found in oustanding commands\n"); mutex_unlock(&instance->reset_mutex); goto out; } devhandle = megasas_get_tm_devhandle(scmd->device); if (devhandle == (u16)ULONG_MAX) { ret = SUCCESS; sdev_printk(KERN_INFO, scmd->device, "task abort issued for invalid devhandle\n"); mutex_unlock(&instance->reset_mutex); goto out; } sdev_printk(KERN_INFO, scmd->device, "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n", scmd, devhandle); mr_device_priv_data->tm_busy = 1; ret = megasas_issue_tm(instance, devhandle, scmd->device->channel, scmd->device->id, smid, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK); mr_device_priv_data->tm_busy = 0; mutex_unlock(&instance->reset_mutex); out: sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n", ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); return ret; } /* * megasas_reset_target_fusion : target reset function for fusion adapters * scmd: SCSI command pointer * * Returns SUCCESS if all commands associated with target aborted else FAILED */ int megasas_reset_target_fusion(struct scsi_cmnd *scmd) { struct megasas_instance *instance; int ret = FAILED; u16 devhandle; struct fusion_context *fusion; struct MR_PRIV_DEVICE *mr_device_priv_data; mr_device_priv_data = scmd->device->hostdata; instance = (struct megasas_instance *)scmd->device->host->hostdata; fusion = instance->ctrl_context; if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," "SCSI host:%d\n", instance->host->host_no); ret = FAILED; return ret; } if (!mr_device_priv_data) { sdev_printk(KERN_INFO, scmd->device, "device been deleted! " "scmd(%p)\n", scmd); scmd->result = DID_NO_CONNECT << 16; ret = SUCCESS; goto out; } if (!mr_device_priv_data->is_tm_capable) { ret = FAILED; goto out; } mutex_lock(&instance->reset_mutex); devhandle = megasas_get_tm_devhandle(scmd->device); if (devhandle == (u16)ULONG_MAX) { ret = SUCCESS; sdev_printk(KERN_INFO, scmd->device, "target reset issued for invalid devhandle\n"); mutex_unlock(&instance->reset_mutex); goto out; } sdev_printk(KERN_INFO, scmd->device, "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n", scmd, devhandle); mr_device_priv_data->tm_busy = 1; ret = megasas_issue_tm(instance, devhandle, scmd->device->channel, scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET); mr_device_priv_data->tm_busy = 0; mutex_unlock(&instance->reset_mutex); out: scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n", (ret == SUCCESS) ? "SUCCESS" : "FAILED"); return ret; } /* Check for a second path that is currently UP */ int megasas_check_mpio_paths(struct megasas_instance *instance, struct scsi_cmnd *scmd) { int i, j, retval = (DID_RESET << 16); if (instance->mpio && instance->requestorId) { for (i = 0 ; i < MAX_MGMT_ADAPTERS ; i++) for (j = 0 ; j < MAX_LOGICAL_DRIVES; j++) if (megasas_mgmt_info.instance[i] && (megasas_mgmt_info.instance[i] != instance) && megasas_mgmt_info.instance[i]->mpio && megasas_mgmt_info.instance[i]->requestorId && (megasas_mgmt_info.instance[i]->ld_ids[j] == scmd->device->id)) { retval = (DID_NO_CONNECT << 16); goto out; } } out: return retval; } /* Core fusion reset function */ int megasas_reset_fusion(struct Scsi_Host *shost, int reason) { int retval = SUCCESS, i, convert = 0; struct megasas_instance *instance; struct megasas_cmd_fusion *cmd_fusion; struct fusion_context *fusion; u32 abs_state, status_reg, reset_adapter; u32 io_timeout_in_crash_mode = 0; struct scsi_cmnd *scmd_local = NULL; struct scsi_device *sdev; instance = (struct megasas_instance *)shost->hostdata; fusion = instance->ctrl_context; mutex_lock(&instance->reset_mutex); if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { dev_warn(&instance->pdev->dev, "Hardware critical error, " "returning FAILED for scsi%d.\n", instance->host->host_no); mutex_unlock(&instance->reset_mutex); return FAILED; } status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); abs_state = status_reg & MFI_STATE_MASK; /* IO timeout detected, forcibly put FW in FAULT state */ if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && instance->crash_dump_app_support && reason) { dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " "forcibly FAULT Firmware\n"); instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; status_reg = readl(&instance->reg_set->doorbell); writel(status_reg | MFI_STATE_FORCE_OCR, &instance->reg_set->doorbell); readl(&instance->reg_set->doorbell); mutex_unlock(&instance->reset_mutex); do { ssleep(3); io_timeout_in_crash_mode++; dev_dbg(&instance->pdev->dev, "waiting for [%d] " "seconds for crash dump collection and OCR " "to be done\n", (io_timeout_in_crash_mode * 3)); } while ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && (io_timeout_in_crash_mode < 80)); if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { dev_info(&instance->pdev->dev, "OCR done for IO " "timeout case\n"); retval = SUCCESS; } else { dev_info(&instance->pdev->dev, "Controller is not " "operational after 240 seconds wait for IO " "timeout case in FW crash dump mode\n do " "OCR/kill adapter\n"); retval = megasas_reset_fusion(shost, 0); } return retval; } if (instance->requestorId && !instance->skip_heartbeat_timer_del) del_timer_sync(&instance->sriov_heartbeat_timer); set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); instance->adprecovery = MEGASAS_ADPRESET_SM_POLLING; instance->instancet->disable_intr(instance); msleep(1000); /* First try waiting for commands to complete */ if (megasas_wait_for_outstanding_fusion(instance, reason, &convert)) { instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; dev_warn(&instance->pdev->dev, "resetting fusion " "adapter scsi%d.\n", instance->host->host_no); if (convert) reason = 0; /* Now return commands back to the OS */ for (i = 0 ; i < instance->max_scsi_cmds; i++) { cmd_fusion = fusion->cmd_list[i]; scmd_local = cmd_fusion->scmd; if (cmd_fusion->scmd) { scmd_local->result = megasas_check_mpio_paths(instance, scmd_local); megasas_return_cmd_fusion(instance, cmd_fusion); scsi_dma_unmap(scmd_local); scmd_local->scsi_done(scmd_local); atomic_dec(&instance->fw_outstanding); } } status_reg = instance->instancet->read_fw_status_reg( instance->reg_set); abs_state = status_reg & MFI_STATE_MASK; reset_adapter = status_reg & MFI_RESET_ADAPTER; if (instance->disableOnlineCtrlReset || (abs_state == MFI_STATE_FAULT && !reset_adapter)) { /* Reset not supported, kill adapter */ dev_warn(&instance->pdev->dev, "Reset not supported" ", killing adapter scsi%d.\n", instance->host->host_no); megaraid_sas_kill_hba(instance); instance->skip_heartbeat_timer_del = 1; retval = FAILED; goto out; } /* Let SR-IOV VF & PF sync up if there was a HB failure */ if (instance->requestorId && !reason) { msleep(MEGASAS_OCR_SETTLE_TIME_VF); /* Look for a late HB update after VF settle time */ if (abs_state == MFI_STATE_OPERATIONAL && (instance->hb_host_mem->HB.fwCounter != instance->hb_host_mem->HB.driverCounter)) { instance->hb_host_mem->HB.driverCounter = instance->hb_host_mem->HB.fwCounter; dev_warn(&instance->pdev->dev, "SR-IOV:" "Late FW heartbeat update for " "scsi%d.\n", instance->host->host_no); } else { /* In VF mode, first poll for FW ready */ for (i = 0; i < (MEGASAS_RESET_WAIT_TIME * 1000); i += 20) { status_reg = instance->instancet-> read_fw_status_reg( instance->reg_set); abs_state = status_reg & MFI_STATE_MASK; if (abs_state == MFI_STATE_READY) { dev_warn(&instance->pdev->dev, "SR-IOV: FW was found" "to be in ready state " "for scsi%d.\n", instance->host->host_no); break; } msleep(20); } if (abs_state != MFI_STATE_READY) { dev_warn(&instance->pdev->dev, "SR-IOV: " "FW not in ready state after %d" " seconds for scsi%d, status_reg = " "0x%x.\n", MEGASAS_RESET_WAIT_TIME, instance->host->host_no, status_reg); megaraid_sas_kill_hba(instance); instance->skip_heartbeat_timer_del = 1; instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; retval = FAILED; goto out; } } } /* Now try to reset the chip */ for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { if (instance->instancet->adp_reset (instance, instance->reg_set)) continue; /* Wait for FW to become ready */ if (megasas_transition_to_ready(instance, 1)) { dev_warn(&instance->pdev->dev, "Failed to " "transition controller to ready " "for scsi%d.\n", instance->host->host_no); continue; } megasas_reset_reply_desc(instance); if (megasas_ioc_init_fusion(instance)) { dev_warn(&instance->pdev->dev, "megasas_ioc_init_fusion() failed!" " for scsi%d\n", instance->host->host_no); continue; } megasas_refire_mgmt_cmd(instance); if (megasas_get_ctrl_info(instance)) { dev_info(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); megaraid_sas_kill_hba(instance); retval = FAILED; } /* Reset load balance info */ memset(fusion->load_balance_info, 0, sizeof(struct LD_LOAD_BALANCE_INFO) *MAX_LOGICAL_DRIVES_EXT); if (!megasas_get_map_info(instance)) megasas_sync_map_info(instance); megasas_setup_jbod_map(instance); shost_for_each_device(sdev, shost) megasas_update_sdev_properties(sdev); clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); instance->instancet->enable_intr(instance); instance->adprecovery = MEGASAS_HBA_OPERATIONAL; /* Restart SR-IOV heartbeat */ if (instance->requestorId) { if (!megasas_sriov_start_heartbeat(instance, 0)) megasas_start_timer(instance, &instance->sriov_heartbeat_timer, megasas_sriov_heartbeat_handler, MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); else instance->skip_heartbeat_timer_del = 1; } /* Adapter reset completed successfully */ dev_warn(&instance->pdev->dev, "Reset " "successful for scsi%d.\n", instance->host->host_no); if (instance->crash_dump_drv_support && instance->crash_dump_app_support) megasas_set_crash_dump_params(instance, MR_CRASH_BUF_TURN_ON); else megasas_set_crash_dump_params(instance, MR_CRASH_BUF_TURN_OFF); retval = SUCCESS; goto out; } /* Reset failed, kill the adapter */ dev_warn(&instance->pdev->dev, "Reset failed, killing " "adapter scsi%d.\n", instance->host->host_no); megaraid_sas_kill_hba(instance); instance->skip_heartbeat_timer_del = 1; retval = FAILED; } else { /* For VF: Restart HB timer if we didn't OCR */ if (instance->requestorId) { megasas_start_timer(instance, &instance->sriov_heartbeat_timer, megasas_sriov_heartbeat_handler, MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); } clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); instance->instancet->enable_intr(instance); instance->adprecovery = MEGASAS_HBA_OPERATIONAL; } out: clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); mutex_unlock(&instance->reset_mutex); return retval; } /* Fusion Crash dump collection work queue */ void megasas_fusion_crash_dump_wq(struct work_struct *work) { struct megasas_instance *instance = container_of(work, struct megasas_instance, crash_init); u32 status_reg; u8 partial_copy = 0; status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); /* * Allocate host crash buffers to copy data from 1 MB DMA crash buffer * to host crash buffers */ if (instance->drv_buf_index == 0) { /* Buffer is already allocated for old Crash dump. * Do OCR and do not wait for crash dump collection */ if (instance->drv_buf_alloc) { dev_info(&instance->pdev->dev, "earlier crash dump is " "not yet copied by application, ignoring this " "crash dump and initiating OCR\n"); status_reg |= MFI_STATE_CRASH_DUMP_DONE; writel(status_reg, &instance->reg_set->outbound_scratch_pad); readl(&instance->reg_set->outbound_scratch_pad); return; } megasas_alloc_host_crash_buffer(instance); dev_info(&instance->pdev->dev, "Number of host crash buffers " "allocated: %d\n", instance->drv_buf_alloc); } /* * Driver has allocated max buffers, which can be allocated * and FW has more crash dump data, then driver will * ignore the data. */ if (instance->drv_buf_index >= (instance->drv_buf_alloc)) { dev_info(&instance->pdev->dev, "Driver is done copying " "the buffer: %d\n", instance->drv_buf_alloc); status_reg |= MFI_STATE_CRASH_DUMP_DONE; partial_copy = 1; } else { memcpy(instance->crash_buf[instance->drv_buf_index], instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); instance->drv_buf_index++; status_reg &= ~MFI_STATE_DMADONE; } if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { dev_info(&instance->pdev->dev, "Crash Dump is available,number " "of copied buffers: %d\n", instance->drv_buf_index); instance->fw_crash_buffer_size = instance->drv_buf_index; instance->fw_crash_state = AVAILABLE; instance->drv_buf_index = 0; writel(status_reg, &instance->reg_set->outbound_scratch_pad); readl(&instance->reg_set->outbound_scratch_pad); if (!partial_copy) megasas_reset_fusion(instance->host, 0); } else { writel(status_reg, &instance->reg_set->outbound_scratch_pad); readl(&instance->reg_set->outbound_scratch_pad); } } /* Fusion OCR work queue */ void megasas_fusion_ocr_wq(struct work_struct *work) { struct megasas_instance *instance = container_of(work, struct megasas_instance, work_init); megasas_reset_fusion(instance->host, 0); } struct megasas_instance_template megasas_instance_template_fusion = { .enable_intr = megasas_enable_intr_fusion, .disable_intr = megasas_disable_intr_fusion, .clear_intr = megasas_clear_intr_fusion, .read_fw_status_reg = megasas_read_fw_status_reg_fusion, .adp_reset = megasas_adp_reset_fusion, .check_reset = megasas_check_reset_fusion, .service_isr = megasas_isr_fusion, .tasklet = megasas_complete_cmd_dpc_fusion, .init_adapter = megasas_init_adapter_fusion, .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, .issue_dcmd = megasas_issue_dcmd_fusion, };