| /* |
| * Linux MegaRAID driver for SAS based RAID controllers |
| * |
| * Copyright (c) 2009-2012 LSI Corporation. |
| * |
| * 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, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| * FILE: megaraid_sas_fusion.c |
| * |
| * Authors: LSI Corporation |
| * Sumant Patro |
| * Adam Radford <linuxraid@lsi.com> |
| * |
| * Send feedback to: <megaraidlinux@lsi.com> |
| * |
| * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 |
| * ATTN: Linuxraid |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/pci.h> |
| #include <linux/list.h> |
| #include <linux/moduleparam.h> |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/uio.h> |
| #include <linux/uaccess.h> |
| #include <linux/fs.h> |
| #include <linux/compat.h> |
| #include <linux/blkdev.h> |
| #include <linux/mutex.h> |
| #include <linux/poll.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| |
| #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 megasas_is_ldio(struct scsi_cmnd *cmd); |
| int |
| wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); |
| |
| 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); |
| |
| u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo, |
| struct IO_REQUEST_INFO *in_info); |
| 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; |
| extern int resetwaittime; |
| |
| /** |
| * 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; |
| /* 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); |
| instance->mask_interrupts = 0; |
| } |
| |
| /** |
| * 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 free command from the pool |
| */ |
| struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance |
| *instance) |
| { |
| unsigned long flags; |
| struct fusion_context *fusion = |
| (struct fusion_context *)instance->ctrl_context; |
| struct megasas_cmd_fusion *cmd = NULL; |
| |
| spin_lock_irqsave(&fusion->cmd_pool_lock, flags); |
| |
| if (!list_empty(&fusion->cmd_pool)) { |
| cmd = list_entry((&fusion->cmd_pool)->next, |
| struct megasas_cmd_fusion, list); |
| list_del_init(&cmd->list); |
| } else { |
| printk(KERN_ERR "megasas: Command pool (fusion) empty!\n"); |
| } |
| |
| spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); |
| return cmd; |
| } |
| |
| /** |
| * 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 |
| */ |
| static inline void |
| megasas_return_cmd_fusion(struct megasas_instance *instance, |
| struct megasas_cmd_fusion *cmd) |
| { |
| unsigned long flags; |
| struct fusion_context *fusion = |
| (struct fusion_context *)instance->ctrl_context; |
| |
| spin_lock_irqsave(&fusion->cmd_pool_lock, flags); |
| |
| cmd->scmd = NULL; |
| cmd->sync_cmd_idx = (u32)ULONG_MAX; |
| list_add_tail(&cmd->list, &fusion->cmd_pool); |
| |
| spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); |
| } |
| |
| /** |
| * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool |
| * @instance: Adapter soft state |
| */ |
| static void megasas_teardown_frame_pool_fusion( |
| struct megasas_instance *instance) |
| { |
| int i; |
| struct fusion_context *fusion = instance->ctrl_context; |
| |
| u16 max_cmd = instance->max_fw_cmds; |
| |
| struct megasas_cmd_fusion *cmd; |
| |
| if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) { |
| printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, " |
| "sense pool : %p\n", fusion->sg_dma_pool, |
| fusion->sense_dma_pool); |
| return; |
| } |
| |
| /* |
| * Return all frames to pool |
| */ |
| for (i = 0; i < max_cmd; i++) { |
| |
| cmd = fusion->cmd_list[i]; |
| |
| 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); |
| } |
| |
| /* |
| * Now destroy the pool itself |
| */ |
| pci_pool_destroy(fusion->sg_dma_pool); |
| pci_pool_destroy(fusion->sense_dma_pool); |
| |
| fusion->sg_dma_pool = NULL; |
| fusion->sense_dma_pool = NULL; |
| } |
| |
| /** |
| * 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; |
| |
| u32 max_cmds, req_sz, reply_sz, io_frames_sz; |
| |
| |
| req_sz = fusion->request_alloc_sz; |
| reply_sz = fusion->reply_alloc_sz; |
| io_frames_sz = fusion->io_frames_alloc_sz; |
| |
| max_cmds = instance->max_fw_cmds; |
| |
| /* Free descriptors and request Frames memory */ |
| if (fusion->req_frames_desc) |
| dma_free_coherent(&instance->pdev->dev, req_sz, |
| fusion->req_frames_desc, |
| fusion->req_frames_desc_phys); |
| |
| if (fusion->reply_frames_desc) { |
| pci_pool_free(fusion->reply_frames_desc_pool, |
| fusion->reply_frames_desc, |
| fusion->reply_frames_desc_phys); |
| pci_pool_destroy(fusion->reply_frames_desc_pool); |
| } |
| |
| if (fusion->io_request_frames) { |
| pci_pool_free(fusion->io_request_frames_pool, |
| fusion->io_request_frames, |
| fusion->io_request_frames_phys); |
| pci_pool_destroy(fusion->io_request_frames_pool); |
| } |
| |
| /* Free the Fusion frame pool */ |
| megasas_teardown_frame_pool_fusion(instance); |
| |
| /* Free all the commands in the cmd_list */ |
| for (i = 0; i < max_cmds; i++) |
| kfree(fusion->cmd_list[i]); |
| |
| /* Free the cmd_list buffer itself */ |
| kfree(fusion->cmd_list); |
| fusion->cmd_list = NULL; |
| |
| INIT_LIST_HEAD(&fusion->cmd_pool); |
| } |
| |
| /** |
| * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames |
| * @instance: Adapter soft state |
| * |
| */ |
| static int megasas_create_frame_pool_fusion(struct megasas_instance *instance) |
| { |
| int i; |
| u32 max_cmd; |
| struct fusion_context *fusion; |
| struct megasas_cmd_fusion *cmd; |
| u32 total_sz_chain_frame; |
| |
| fusion = instance->ctrl_context; |
| max_cmd = instance->max_fw_cmds; |
| |
| total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME; |
| |
| /* |
| * Use DMA pool facility provided by PCI layer |
| */ |
| |
| fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion", |
| instance->pdev, |
| total_sz_chain_frame, 4, |
| 0); |
| if (!fusion->sg_dma_pool) { |
| printk(KERN_DEBUG "megasas: failed to setup request pool " |
| "fusion\n"); |
| return -ENOMEM; |
| } |
| fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion", |
| instance->pdev, |
| SCSI_SENSE_BUFFERSIZE, 64, 0); |
| |
| if (!fusion->sense_dma_pool) { |
| printk(KERN_DEBUG "megasas: failed to setup sense pool " |
| "fusion\n"); |
| pci_pool_destroy(fusion->sg_dma_pool); |
| fusion->sg_dma_pool = NULL; |
| 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); |
| /* |
| * megasas_teardown_frame_pool_fusion() takes care of freeing |
| * whatever has been allocated |
| */ |
| if (!cmd->sg_frame || !cmd->sense) { |
| printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n"); |
| megasas_teardown_frame_pool_fusion(instance); |
| return -ENOMEM; |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * 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, j, count; |
| u32 max_cmd, io_frames_sz; |
| struct fusion_context *fusion; |
| struct megasas_cmd_fusion *cmd; |
| union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; |
| u32 offset; |
| dma_addr_t io_req_base_phys; |
| u8 *io_req_base; |
| |
| fusion = instance->ctrl_context; |
| |
| max_cmd = instance->max_fw_cmds; |
| |
| 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) { |
| printk(KERN_ERR "megasas; Could not allocate memory for " |
| "request_frames\n"); |
| goto fail_req_desc; |
| } |
| |
| count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; |
| fusion->reply_frames_desc_pool = |
| pci_pool_create("reply_frames pool", instance->pdev, |
| fusion->reply_alloc_sz * count, 16, 0); |
| |
| if (!fusion->reply_frames_desc_pool) { |
| printk(KERN_ERR "megasas; Could not allocate memory for " |
| "reply_frame pool\n"); |
| goto fail_reply_desc; |
| } |
| |
| fusion->reply_frames_desc = |
| pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL, |
| &fusion->reply_frames_desc_phys); |
| if (!fusion->reply_frames_desc) { |
| printk(KERN_ERR "megasas; Could not allocate memory for " |
| "reply_frame pool\n"); |
| pci_pool_destroy(fusion->reply_frames_desc_pool); |
| goto fail_reply_desc; |
| } |
| |
| reply_desc = fusion->reply_frames_desc; |
| for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) |
| reply_desc->Words = ULLONG_MAX; |
| |
| io_frames_sz = fusion->io_frames_alloc_sz; |
| |
| fusion->io_request_frames_pool = |
| pci_pool_create("io_request_frames pool", instance->pdev, |
| fusion->io_frames_alloc_sz, 16, 0); |
| |
| if (!fusion->io_request_frames_pool) { |
| printk(KERN_ERR "megasas: Could not allocate memory for " |
| "io_request_frame pool\n"); |
| goto fail_io_frames; |
| } |
| |
| fusion->io_request_frames = |
| pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL, |
| &fusion->io_request_frames_phys); |
| if (!fusion->io_request_frames) { |
| printk(KERN_ERR "megasas: Could not allocate memory for " |
| "io_request_frames frames\n"); |
| pci_pool_destroy(fusion->io_request_frames_pool); |
| goto fail_io_frames; |
| } |
| |
| /* |
| * 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) { |
| printk(KERN_DEBUG "megasas: out of memory. Could not alloc " |
| "memory for cmd_list_fusion\n"); |
| goto fail_cmd_list; |
| } |
| |
| max_cmd = instance->max_fw_cmds; |
| for (i = 0; i < max_cmd; i++) { |
| fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion), |
| GFP_KERNEL); |
| if (!fusion->cmd_list[i]) { |
| printk(KERN_ERR "Could not alloc cmd list fusion\n"); |
| |
| for (j = 0; j < i; j++) |
| kfree(fusion->cmd_list[j]); |
| |
| kfree(fusion->cmd_list); |
| fusion->cmd_list = NULL; |
| goto fail_cmd_list; |
| } |
| } |
| |
| /* The first 256 bytes (SMID 0) is not used. Don't add to 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 < max_cmd; 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 = (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; |
| |
| list_add_tail(&cmd->list, &fusion->cmd_pool); |
| } |
| |
| /* |
| * Create a frame pool and assign one frame to each cmd |
| */ |
| if (megasas_create_frame_pool_fusion(instance)) { |
| printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); |
| megasas_free_cmds_fusion(instance); |
| goto fail_req_desc; |
| } |
| |
| return 0; |
| |
| fail_cmd_list: |
| pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames, |
| fusion->io_request_frames_phys); |
| pci_pool_destroy(fusion->io_request_frames_pool); |
| fail_io_frames: |
| dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, |
| fusion->reply_frames_desc, |
| fusion->reply_frames_desc_phys); |
| pci_pool_free(fusion->reply_frames_desc_pool, |
| fusion->reply_frames_desc, |
| fusion->reply_frames_desc_phys); |
| pci_pool_destroy(fusion->reply_frames_desc_pool); |
| |
| fail_reply_desc: |
| dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, |
| fusion->req_frames_desc, |
| fusion->req_frames_desc_phys); |
| fail_req_desc: |
| 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 i; |
| struct megasas_header *frame_hdr = &cmd->frame->hdr; |
| |
| u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000; |
| |
| /* |
| * 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 == 0xff) |
| return -ETIME; |
| |
| return 0; |
| } |
| |
| /** |
| * 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; |
| dma_addr_t ioc_init_handle; |
| struct megasas_cmd *cmd; |
| u8 ret; |
| struct fusion_context *fusion; |
| union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
| int i; |
| struct megasas_header *frame_hdr; |
| |
| fusion = instance->ctrl_context; |
| |
| cmd = megasas_get_cmd(instance); |
| |
| if (!cmd) { |
| printk(KERN_ERR "Could not allocate cmd for INIT Frame\n"); |
| ret = 1; |
| goto fail_get_cmd; |
| } |
| |
| IOCInitMessage = |
| dma_alloc_coherent(&instance->pdev->dev, |
| sizeof(struct MPI2_IOC_INIT_REQUEST), |
| &ioc_init_handle, GFP_KERNEL); |
| |
| if (!IOCInitMessage) { |
| printk(KERN_ERR "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 = cpu_to_le64(fusion->reply_frames_desc_phys); |
| 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(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); |
| |
| init_frame->cmd = MFI_CMD_INIT; |
| init_frame->cmd_status = 0xFF; |
| |
| /* driver support Extended MSIX */ |
| if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) |
| init_frame->driver_operations. |
| mfi_capabilities.support_additional_msix = 1; |
| /* driver supports HA / Remote LUN over Fast Path interface */ |
| init_frame->driver_operations.mfi_capabilities.support_fp_remote_lun |
| = 1; |
| /* Convert capability to LE32 */ |
| cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); |
| |
| 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 = |
| (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc; |
| |
| req_desc->Words = 0; |
| req_desc->MFAIo.RequestFlags = |
| (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << |
| MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
| cpu_to_le32s((u32 *)&req_desc->MFAIo); |
| req_desc->Words |= cpu_to_le64(cmd->frame_phys_addr); |
| |
| /* |
| * 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; |
| } |
| |
| instance->instancet->fire_cmd(instance, req_desc->u.low, |
| req_desc->u.high, instance->reg_set); |
| |
| wait_and_poll(instance, cmd); |
| |
| frame_hdr = &cmd->frame->hdr; |
| if (frame_hdr->cmd_status != 0) { |
| ret = 1; |
| goto fail_fw_init; |
| } |
| printk(KERN_ERR "megasas:IOC 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_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. |
| */ |
| static int |
| megasas_get_ld_map_info(struct megasas_instance *instance) |
| { |
| int ret = 0; |
| struct megasas_cmd *cmd; |
| struct megasas_dcmd_frame *dcmd; |
| struct MR_FW_RAID_MAP_ALL *ci; |
| dma_addr_t ci_h = 0; |
| u32 size_map_info; |
| struct fusion_context *fusion; |
| |
| cmd = megasas_get_cmd(instance); |
| |
| if (!cmd) { |
| printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n"); |
| return -ENOMEM; |
| } |
| |
| fusion = instance->ctrl_context; |
| |
| if (!fusion) { |
| megasas_return_cmd(instance, cmd); |
| return 1; |
| } |
| |
| dcmd = &cmd->frame->dcmd; |
| |
| size_map_info = sizeof(struct MR_FW_RAID_MAP) + |
| (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); |
| |
| ci = fusion->ld_map[(instance->map_id & 1)]; |
| ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; |
| |
| if (!ci) { |
| printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n"); |
| megasas_return_cmd(instance, cmd); |
| return -ENOMEM; |
| } |
| |
| memset(ci, 0, sizeof(*ci)); |
| memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| |
| 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 (!megasas_issue_polled(instance, cmd)) |
| ret = 0; |
| else { |
| printk(KERN_ERR "megasas: Get LD Map Info Failed\n"); |
| ret = -1; |
| } |
| |
| 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_FW_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) { |
| printk(KERN_DEBUG "megasas: 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_map[instance->map_id & 1]; |
| |
| num_lds = le32_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, sizeof(struct MR_FW_RAID_MAP_ALL)); |
| |
| 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 = sizeof(struct MR_FW_RAID_MAP) + |
| (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); |
| |
| 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; |
| 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; |
| 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; |
| instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008); |
| |
| /* |
| * 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 internal cmds (DCMD) need to have MFI frames */ |
| instance->max_mfi_cmds = MEGASAS_INT_CMDS; |
| |
| max_cmd = instance->max_fw_cmds; |
| |
| fusion->reply_q_depth = ((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 */ |
| |
| 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 = |
| MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION); |
| |
| instance->max_num_sge = 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; |
| |
| /* |
| * 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); |
| |
| instance->flag_ieee = 1; |
| |
| fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) + |
| (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); |
| |
| fusion->fast_path_io = 0; |
| |
| for (i = 0; i < 2; i++) { |
| fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, |
| fusion->map_sz, |
| &fusion->ld_map_phys[i], |
| GFP_KERNEL); |
| if (!fusion->ld_map[i]) { |
| printk(KERN_ERR "megasas: 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->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; |
| } |
| |
| /** |
| * megasas_fire_cmd_fusion - Sends command to the FW |
| * @frame_phys_addr : Physical address of cmd |
| * @frame_count : Number of frames for the command |
| * @regs : MFI register set |
| */ |
| void |
| megasas_fire_cmd_fusion(struct megasas_instance *instance, |
| dma_addr_t req_desc_lo, |
| u32 req_desc_hi, |
| struct megasas_register_set __iomem *regs) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&instance->hba_lock, flags); |
| |
| writel(le32_to_cpu(req_desc_lo), &(regs)->inbound_low_queue_port); |
| writel(le32_to_cpu(req_desc_hi), &(regs)->inbound_high_queue_port); |
| spin_unlock_irqrestore(&instance->hba_lock, flags); |
| } |
| |
| /** |
| * 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: |
| printk(KERN_DEBUG "megasas: 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 ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { |
| 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 ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { |
| 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 ((instance->pdev->device == |
| PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == |
| PCI_DEVICE_ID_LSI_FURY)) { |
| 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 ((instance->pdev->device == |
| PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == |
| PCI_DEVICE_ID_LSI_FURY)) |
| 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; |
| } |
| } |
| |
| 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_FW_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 = 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_FW_RAID_MAP_ALL *local_map_ptr; |
| u8 *raidLUN; |
| |
| device_id = MEGASAS_DEV_INDEX(instance, 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_map[(instance->map_id & 1)]; |
| |
| if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >= |
| MAX_LOGICAL_DRIVES) || (!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 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 ? |
| 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_HIGH_PRIORITY |
| << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
| if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { |
| 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( |
| &fusion->load_balance_info[device_id], |
| &io_info); |
| scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; |
| } else |
| scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; |
| 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 ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { |
| 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.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_dcdb_fusion - Prepares IOs to devices |
| * @instance: Adapter soft state |
| * @scp: SCSI command |
| * @cmd: Command to be prepared |
| * |
| * Prepares the io_request frame for non-io cmds |
| */ |
| static void |
| megasas_build_dcdb_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_FW_RAID_MAP_ALL *local_map_ptr; |
| struct fusion_context *fusion = instance->ctrl_context; |
| u8 span, physArm; |
| u16 devHandle; |
| u32 ld, arRef, pd; |
| struct MR_LD_RAID *raid; |
| struct RAID_CONTEXT *pRAID_Context; |
| |
| io_request = cmd->io_request; |
| device_id = MEGASAS_DEV_INDEX(instance, scmd); |
| pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL) |
| +scmd->device->id; |
| local_map_ptr = fusion->ld_map[(instance->map_id & 1)]; |
| |
| io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); |
| |
| |
| /* Check if this is a system PD I/O */ |
| if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS && |
| instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) { |
| io_request->Function = 0; |
| if (fusion->fast_path_io) |
| io_request->DevHandle = |
| local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; |
| io_request->RaidContext.timeoutValue = |
| local_map_ptr->raidMap.fpPdIoTimeoutSec; |
| io_request->RaidContext.regLockFlags = 0; |
| io_request->RaidContext.regLockRowLBA = 0; |
| io_request->RaidContext.regLockLength = 0; |
| io_request->RaidContext.RAIDFlags = |
| MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD << |
| MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; |
| if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) |
| io_request->IoFlags |= |
| MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH; |
| cmd->request_desc->SCSIIO.RequestFlags = |
| (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << |
| MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
| cmd->request_desc->SCSIIO.DevHandle = |
| local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; |
| /* |
| * If the command is for the tape device, set the |
| * FP timeout to the os layer timeout value. |
| */ |
| if (scmd->device->type == TYPE_TAPE) { |
| if ((scmd->request->timeout / HZ) > 0xFFFF) |
| io_request->RaidContext.timeoutValue = |
| 0xFFFF; |
| else |
| io_request->RaidContext.timeoutValue = |
| scmd->request->timeout / HZ; |
| } |
| } else { |
| if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS) |
| goto NonFastPath; |
| |
| ld = MR_TargetIdToLdGet(device_id, local_map_ptr); |
| if ((ld >= MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) |
| goto NonFastPath; |
| |
| raid = MR_LdRaidGet(ld, local_map_ptr); |
| |
| /* check if this LD is FP capable */ |
| if (!(raid->capability.fpNonRWCapable)) |
| /* not FP capable, send as non-FP */ |
| goto NonFastPath; |
| |
| /* get RAID_Context pointer */ |
| pRAID_Context = &io_request->RaidContext; |
| |
| /* set RAID context values */ |
| pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ; |
| pRAID_Context->timeoutValue = raid->fpIoTimeoutForLd; |
| pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id); |
| pRAID_Context->regLockRowLBA = 0; |
| pRAID_Context->regLockLength = 0; |
| pRAID_Context->configSeqNum = raid->seqNum; |
| |
| /* 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_HIGH_PRIORITY << |
| 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; |
| |
| return; |
| |
| NonFastPath: |
| io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; |
| io_request->DevHandle = cpu_to_le16(device_id); |
| cmd->request_desc->SCSIIO.RequestFlags = |
| (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << |
| MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
| } |
| io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id); |
| io_request->LUN[1] = scmd->device->lun; |
| } |
| |
| /** |
| * 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) |
| { |
| u32 device_id, sge_count; |
| struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; |
| |
| device_id = MEGASAS_DEV_INDEX(instance, scp); |
| |
| /* Zero out some fields so they don't get reused */ |
| io_request->LUN[1] = 0; |
| 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); |
| |
| if (megasas_is_ldio(scp)) |
| megasas_build_ldio_fusion(instance, scp, cmd); |
| else |
| megasas_build_dcdb_fusion(instance, scp, cmd); |
| |
| /* |
| * 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) { |
| printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds " |
| "max (0x%x) allowed\n", sge_count, |
| instance->max_num_sge); |
| return 1; |
| } |
| |
| io_request->RaidContext.numSGE = sge_count; |
| |
| 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) { |
| printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for " |
| "descriptor\n", index); |
| 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); |
| if (!cmd) |
| return SCSI_MLQUEUE_HOST_BUSY; |
| |
| 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); |
| printk(KERN_ERR "megasas: 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) |
| printk(KERN_ERR "megasas: The chain offset value is not " |
| "correct : %x\n", cmd->io_request->ChainOffset); |
| |
| /* |
| * Issue the command to the FW |
| */ |
| atomic_inc(&instance->fw_outstanding); |
| |
| instance->instancet->fire_cmd(instance, |
| req_desc->u.low, req_desc->u.high, |
| instance->reg_set); |
| |
| 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, arm; |
| u32 status, extStatus, device_id; |
| union desc_value d_val; |
| struct LD_LOAD_BALANCE_INFO *lbinfo; |
| |
| fusion = instance->ctrl_context; |
| |
| if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) |
| return IRQ_HANDLED; |
| |
| desc = fusion->reply_frames_desc; |
| desc += ((MSIxIndex * fusion->reply_alloc_sz)/ |
| sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) + |
| 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 != UINT_MAX) && (d_val.u.high != 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; |
| |
| status = scsi_io_req->RaidContext.status; |
| extStatus = scsi_io_req->RaidContext.exStatus; |
| |
| switch (scsi_io_req->Function) { |
| case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ |
| /* Update load balancing info */ |
| device_id = MEGASAS_DEV_INDEX(instance, |
| cmd_fusion->scmd); |
| lbinfo = &fusion->load_balance_info[device_id]; |
| if (cmd_fusion->scmd->SCp.Status & |
| MEGASAS_LOAD_BALANCE_FLAG) { |
| arm = lbinfo->raid1DevHandle[0] == |
| cmd_fusion->io_request->DevHandle ? 0 : |
| 1; |
| atomic_dec(&lbinfo->scsi_pending_cmds[arm]); |
| 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) |
| printk(KERN_ERR "\nmegasas: FAST 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_dma_unmap(cmd_fusion->scmd); |
| cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); |
| scsi_io_req->RaidContext.status = 0; |
| scsi_io_req->RaidContext.exStatus = 0; |
| megasas_return_cmd_fusion(instance, cmd_fusion); |
| 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]; |
| megasas_complete_cmd(instance, cmd_mfi, DID_OK); |
| cmd_fusion->flags = 0; |
| megasas_return_cmd_fusion(instance, cmd_fusion); |
| |
| break; |
| } |
| |
| fusion->last_reply_idx[MSIxIndex]++; |
| if (fusion->last_reply_idx[MSIxIndex] >= |
| fusion->reply_q_depth) |
| fusion->last_reply_idx[MSIxIndex] = 0; |
| |
| desc->Words = ULLONG_MAX; |
| num_completed++; |
| |
| /* Get the next reply descriptor */ |
| if (!fusion->last_reply_idx[MSIxIndex]) |
| desc = fusion->reply_frames_desc + |
| ((MSIxIndex * fusion->reply_alloc_sz)/ |
| sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)); |
| 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; |
| } |
| |
| if (!num_completed) |
| return IRQ_NONE; |
| |
| wmb(); |
| if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) |
| 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; |
| |
| 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; |
| if (fw_state == MFI_STATE_FAULT) |
| 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; |
| |
| cmd = megasas_get_cmd_fusion(instance); |
| if (!cmd) |
| return 1; |
| |
| /* Save the smid. To be used for returning the cmd */ |
| mfi_cmd->context.smid = cmd->index; |
| |
| cmd->sync_cmd_idx = mfi_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 & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE) |
| cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; |
| |
| fusion = instance->ctrl_context; |
| io_req = cmd->io_request; |
| |
| if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || |
| (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { |
| 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(MEGASAS_MAX_SZ_CHAIN_FRAME); |
| |
| 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)) { |
| printk(KERN_ERR "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 |
| * |
| */ |
| void |
| 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) { |
| printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n"); |
| return; |
| } |
| instance->instancet->fire_cmd(instance, req_desc->u.low, |
| req_desc->u.high, instance->reg_set); |
| } |
| |
| /** |
| * megasas_release_fusion - Reverses the FW initialization |
| * @intance: 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_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) |
| { |
| 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 i, outstanding, retval = 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) { |
| printk(KERN_WARNING "megasas: Found FW in FAULT state," |
| " will reset adapter.\n"); |
| retval = 1; |
| goto out; |
| } |
| |
| outstanding = atomic_read(&instance->fw_outstanding); |
| if (!outstanding) |
| goto out; |
| |
| if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { |
| printk(KERN_NOTICE "megasas: [%2d]waiting for %d " |
| "commands to complete\n", i, outstanding); |
| megasas_complete_cmd_dpc_fusion( |
| (unsigned long)instance); |
| } |
| msleep(1000); |
| } |
| |
| if (atomic_read(&instance->fw_outstanding)) { |
| printk("megaraid_sas: pending commands remain after waiting, " |
| "will reset adapter.\n"); |
| retval = 1; |
| } |
| out: |
| return retval; |
| } |
| |
| void megasas_reset_reply_desc(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; |
| for (i = 0 ; i < count ; i++) |
| fusion->last_reply_idx[i] = 0; |
| reply_desc = fusion->reply_frames_desc; |
| for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++) |
| reply_desc->Words = ULLONG_MAX; |
| } |
| |
| /* Core fusion reset function */ |
| int megasas_reset_fusion(struct Scsi_Host *shost) |
| { |
| int retval = SUCCESS, i, j, retry = 0; |
| struct megasas_instance *instance; |
| struct megasas_cmd_fusion *cmd_fusion; |
| struct fusion_context *fusion; |
| struct megasas_cmd *cmd_mfi; |
| union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
| u32 host_diag, abs_state, status_reg, reset_adapter; |
| |
| instance = (struct megasas_instance *)shost->hostdata; |
| fusion = instance->ctrl_context; |
| |
| if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
| printk(KERN_WARNING "megaraid_sas: Hardware critical error, " |
| "returning FAILED.\n"); |
| return FAILED; |
| } |
| |
| mutex_lock(&instance->reset_mutex); |
| set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); |
| instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; |
| instance->instancet->disable_intr(instance); |
| msleep(1000); |
| |
| /* First try waiting for commands to complete */ |
| if (megasas_wait_for_outstanding_fusion(instance)) { |
| printk(KERN_WARNING "megaraid_sas: resetting fusion " |
| "adapter.\n"); |
| /* Now return commands back to the OS */ |
| for (i = 0 ; i < instance->max_fw_cmds; i++) { |
| cmd_fusion = fusion->cmd_list[i]; |
| if (cmd_fusion->scmd) { |
| scsi_dma_unmap(cmd_fusion->scmd); |
| cmd_fusion->scmd->result = (DID_RESET << 16); |
| cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); |
| megasas_return_cmd_fusion(instance, cmd_fusion); |
| 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 */ |
| printk(KERN_WARNING "megaraid_sas: Reset not supported" |
| ", killing adapter.\n"); |
| megaraid_sas_kill_hba(instance); |
| 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++) { |
| 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) { |
| printk(KERN_WARNING "megaraid_sas: " |
| "Host diag unlock failed!\n"); |
| break; |
| } |
| } |
| if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) |
| continue; |
| |
| /* 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) { |
| printk(KERN_WARNING "megaraid_sas: " |
| "Diag reset adapter never " |
| "cleared!\n"); |
| break; |
| } |
| } |
| if (host_diag & HOST_DIAG_RESET_ADAPTER) |
| continue; |
| |
| 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) { |
| printk(KERN_WARNING "megaraid_sas: firmware " |
| "state < MFI_STATE_FW_INIT, state = " |
| "0x%x\n", abs_state); |
| continue; |
| } |
| |
| /* Wait for FW to become ready */ |
| if (megasas_transition_to_ready(instance, 1)) { |
| printk(KERN_WARNING "megaraid_sas: Failed to " |
| "transition controller to ready.\n"); |
| continue; |
| } |
| |
| megasas_reset_reply_desc(instance); |
| if (megasas_ioc_init_fusion(instance)) { |
| printk(KERN_WARNING "megaraid_sas: " |
| "megasas_ioc_init_fusion() failed!\n"); |
| continue; |
| } |
| |
| clear_bit(MEGASAS_FUSION_IN_RESET, |
| &instance->reset_flags); |
| instance->instancet->enable_intr(instance); |
| instance->adprecovery = MEGASAS_HBA_OPERATIONAL; |
| |
| /* Re-fire management commands */ |
| for (j = 0 ; j < instance->max_fw_cmds; j++) { |
| cmd_fusion = fusion->cmd_list[j]; |
| if (cmd_fusion->sync_cmd_idx != |
| (u32)ULONG_MAX) { |
| cmd_mfi = |
| instance-> |
| cmd_list[cmd_fusion->sync_cmd_idx]; |
| if (cmd_mfi->frame->dcmd.opcode == |
| MR_DCMD_LD_MAP_GET_INFO) { |
| megasas_return_cmd(instance, |
| cmd_mfi); |
| megasas_return_cmd_fusion( |
| instance, cmd_fusion); |
| } else { |
| req_desc = |
| megasas_get_request_descriptor( |
| instance, |
| cmd_mfi->context.smid |
| -1); |
| if (!req_desc) |
| printk(KERN_WARNING |
| "req_desc NULL" |
| "\n"); |
| else { |
| instance->instancet-> |
| fire_cmd(instance, |
| req_desc-> |
| u.low, |
| req_desc-> |
| u.high, |
| instance-> |
| reg_set); |
| } |
| } |
| } |
| } |
| |
| /* Reset load balance info */ |
| memset(fusion->load_balance_info, 0, |
| sizeof(struct LD_LOAD_BALANCE_INFO) |
| *MAX_LOGICAL_DRIVES); |
| |
| if (!megasas_get_map_info(instance)) |
| megasas_sync_map_info(instance); |
| |
| /* Adapter reset completed successfully */ |
| printk(KERN_WARNING "megaraid_sas: Reset " |
| "successful.\n"); |
| retval = SUCCESS; |
| goto out; |
| } |
| /* Reset failed, kill the adapter */ |
| printk(KERN_WARNING "megaraid_sas: Reset failed, killing " |
| "adapter.\n"); |
| megaraid_sas_kill_hba(instance); |
| retval = FAILED; |
| } else { |
| 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 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); |
| } |
| |
| struct megasas_instance_template megasas_instance_template_fusion = { |
| .fire_cmd = megasas_fire_cmd_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, |
| }; |