| /* |
| * 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 <http://www.gnu.org/licenses/>. |
| * |
| * FILE: megaraid_sas_fusion.c |
| * |
| * Authors: Avago Technologies |
| * Sumant Patro |
| * Adam Radford |
| * Kashyap Desai <kashyap.desai@avagotech.com> |
| * Sumit Saxena <sumit.saxena@avagotech.com> |
| * |
| * Send feedback to: megaraidlinux.pdl@avagotech.com |
| * |
| * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, |
| * San Jose, California 95131 |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/pci.h> |
| #include <linux/list.h> |
| #include <linux/moduleparam.h> |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/uio.h> |
| #include <linux/uaccess.h> |
| #include <linux/fs.h> |
| #include <linux/compat.h> |
| #include <linux/blkdev.h> |
| #include <linux/mutex.h> |
| #include <linux/poll.h> |
| #include <linux/vmalloc.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_dbg.h> |
| #include <linux/dmi.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 |
| 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 unsigned int resetwaittime; |
| extern unsigned int dual_qdepth_disable; |
| 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, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); |
| cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; |
| cmd->cmd_completed = false; |
| } |
| |
| /** |
| * megasas_fire_cmd_fusion - Sends command to the FW |
| * @instance: Adapter soft state |
| * @req_desc: 64bit Request descriptor |
| * |
| * Perform PCI Write. |
| */ |
| |
| 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); |
| mmiowb(); |
| spin_unlock_irqrestore(&instance->hba_lock, flags); |
| #endif |
| } |
| |
| /** |
| * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here |
| * @instance: Adapter soft state |
| * fw_boot_context: Whether this function called during probe or after OCR |
| * |
| * This function is only for fusion controllers. |
| * Update host can queue, if firmware downgrade max supported firmware commands. |
| * Firmware upgrade case will be skiped because underlying firmware has |
| * more resource than exposed to the OS. |
| * |
| */ |
| static void |
| megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context) |
| { |
| u16 cur_max_fw_cmds = 0; |
| u16 ldio_threshold = 0; |
| struct megasas_register_set __iomem *reg_set; |
| |
| reg_set = instance->reg_set; |
| |
| /* ventura FW does not fill outbound_scratch_pad_3 with queue depth */ |
| if (!instance->is_ventura) |
| cur_max_fw_cmds = |
| readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF; |
| |
| if (dual_qdepth_disable || !cur_max_fw_cmds) |
| cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; |
| else |
| ldio_threshold = |
| (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS; |
| |
| dev_info(&instance->pdev->dev, |
| "Current firmware maximum commands: %d\t LDIO threshold: %d\n", |
| cur_max_fw_cmds, ldio_threshold); |
| |
| if (fw_boot_context == OCR_CONTEXT) { |
| cur_max_fw_cmds = cur_max_fw_cmds - 1; |
| if (cur_max_fw_cmds < instance->max_fw_cmds) { |
| instance->cur_can_queue = |
| cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS + |
| MEGASAS_FUSION_IOCTL_CMDS); |
| instance->host->can_queue = instance->cur_can_queue; |
| instance->ldio_threshold = ldio_threshold; |
| } |
| } else { |
| instance->max_fw_cmds = cur_max_fw_cmds; |
| instance->ldio_threshold = ldio_threshold; |
| |
| if (!instance->is_rdpq) |
| instance->max_fw_cmds = |
| min_t(u16, instance->max_fw_cmds, 1024); |
| |
| if (reset_devices) |
| instance->max_fw_cmds = min(instance->max_fw_cmds, |
| (u16)MEGASAS_KDUMP_QUEUE_DEPTH); |
| /* |
| * 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; |
| |
| instance->max_scsi_cmds = instance->max_fw_cmds - |
| (MEGASAS_FUSION_INTERNAL_CMDS + |
| MEGASAS_FUSION_IOCTL_CMDS); |
| instance->cur_can_queue = instance->max_scsi_cmds; |
| instance->host->can_queue = instance->cur_can_queue; |
| } |
| |
| if (instance->is_ventura) |
| instance->max_mpt_cmds = |
| instance->max_fw_cmds * RAID_1_PEER_CMDS; |
| else |
| instance->max_mpt_cmds = instance->max_fw_cmds; |
| } |
| /** |
| * 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_mpt_cmds; i++) { |
| cmd = fusion->cmd_list[i]; |
| if (cmd) { |
| if (cmd->sg_frame) |
| dma_pool_free(fusion->sg_dma_pool, cmd->sg_frame, |
| cmd->sg_frame_phys_addr); |
| if (cmd->sense) |
| dma_pool_free(fusion->sense_dma_pool, cmd->sense, |
| cmd->sense_phys_addr); |
| } |
| } |
| |
| if (fusion->sg_dma_pool) { |
| dma_pool_destroy(fusion->sg_dma_pool); |
| fusion->sg_dma_pool = NULL; |
| } |
| if (fusion->sense_dma_pool) { |
| dma_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) |
| dma_pool_free(fusion->io_request_frames_pool, |
| fusion->io_request_frames, |
| fusion->io_request_frames_phys); |
| if (fusion->io_request_frames_pool) { |
| dma_pool_destroy(fusion->io_request_frames_pool); |
| fusion->io_request_frames_pool = NULL; |
| } |
| |
| |
| /* cmd_list */ |
| for (i = 0; i < instance->max_mpt_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; |
| u16 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 = |
| dma_pool_create("mr_sg", &instance->pdev->dev, |
| instance->max_chain_frame_sz, |
| MR_DEFAULT_NVME_PAGE_SIZE, 0); |
| /* SCSI_SENSE_BUFFERSIZE = 96 bytes */ |
| fusion->sense_dma_pool = |
| dma_pool_create("mr_sense", &instance->pdev->dev, |
| 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 = dma_pool_alloc(fusion->sg_dma_pool, |
| GFP_KERNEL, &cmd->sg_frame_phys_addr); |
| |
| cmd->sense = dma_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; |
| } |
| } |
| |
| /* create sense buffer for the raid 1/10 fp */ |
| for (i = max_cmd; i < instance->max_mpt_cmds; i++) { |
| cmd = fusion->cmd_list[i]; |
| cmd->sense = dma_pool_alloc(fusion->sense_dma_pool, |
| GFP_KERNEL, &cmd->sense_phys_addr); |
| if (!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_mpt_cmd, i, j; |
| struct fusion_context *fusion; |
| |
| fusion = instance->ctrl_context; |
| |
| max_mpt_cmd = instance->max_mpt_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_mpt_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_mpt_cmd; i++) { |
| fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion), |
| GFP_KERNEL); |
| if (!fusion->cmd_list[i]) { |
| for (j = 0; j < i; j++) |
| kfree(fusion->cmd_list[j]); |
| kfree(fusion->cmd_list); |
| 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 = |
| dma_pool_create("mr_ioreq", &instance->pdev->dev, |
| 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 = |
| dma_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 = |
| dma_pool_create("mr_reply", &instance->pdev->dev, |
| 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] = |
| dma_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 = dma_pool_create("mr_rdpq", |
| &instance->pdev->dev, |
| 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] = |
| dma_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 = |
| cpu_to_le64(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]) |
| dma_pool_free(fusion->reply_frames_desc_pool, |
| fusion->reply_frames_desc[i], |
| fusion->reply_frames_desc_phys[i]); |
| } |
| |
| if (fusion->reply_frames_desc_pool) |
| dma_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]) |
| dma_pool_free(fusion->reply_frames_desc_pool, |
| fusion->reply_frames_desc[0], |
| fusion->reply_frames_desc_phys[0]); |
| |
| if (fusion->reply_frames_desc_pool) |
| dma_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_mpt_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_fw_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; |
| cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; |
| } |
| |
| 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; |
| } |
| |
| instance->fw_sync_cache_support = (scratch_pad_2 & |
| MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; |
| dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", |
| instance->fw_sync_cache_support ? "Yes" : "No"); |
| |
| 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; |
| IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; |
| 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; |
| if (!dual_qdepth_disable) |
| drv_ops->mfi_capabilities.support_ext_queue_depth = 1; |
| |
| drv_ops->mfi_capabilities.support_qd_throttling = 1; |
| drv_ops->mfi_capabilities.support_pd_map_target_id = 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; |
| } |
| |
| 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: |
| dev_err(&instance->pdev->dev, |
| "Init cmd return status %s for SCSI host %d\n", |
| ret ? "FAILED" : "SUCCESS", instance->host->host_no); |
| |
| 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); |
| 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 i; |
| struct megasas_cmd *cmd; |
| struct megasas_dcmd_frame *dcmd; |
| u16 num_lds; |
| u32 size_sync_info; |
| 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 0; |
| } |
| |
| /* |
| * 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_allocate_raid_maps - Allocate memory for RAID maps |
| * @instance: Adapter soft state |
| * |
| * return: if success: return 0 |
| * failed: return -ENOMEM |
| */ |
| static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) |
| { |
| struct fusion_context *fusion; |
| int i = 0; |
| |
| fusion = instance->ctrl_context; |
| |
| 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_ZERO | GFP_KERNEL, |
| fusion->drv_map_pages); |
| |
| if (!fusion->ld_drv_map[i]) { |
| fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); |
| |
| if (!fusion->ld_drv_map[i]) { |
| dev_err(&instance->pdev->dev, |
| "Could not allocate memory for local map" |
| " size requested: %d\n", |
| fusion->drv_map_sz); |
| goto ld_drv_map_alloc_fail; |
| } |
| } |
| } |
| |
| 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 %s:%d\n", |
| __func__, __LINE__); |
| goto ld_map_alloc_fail; |
| } |
| } |
| |
| return 0; |
| |
| ld_map_alloc_fail: |
| for (i = 0; i < 2; i++) { |
| if (fusion->ld_map[i]) |
| dma_free_coherent(&instance->pdev->dev, |
| fusion->max_map_sz, |
| fusion->ld_map[i], |
| fusion->ld_map_phys[i]); |
| } |
| |
| ld_drv_map_alloc_fail: |
| for (i = 0; i < 2; i++) { |
| if (fusion->ld_drv_map[i]) { |
| if (is_vmalloc_addr(fusion->ld_drv_map[i])) |
| vfree(fusion->ld_drv_map[i]); |
| else |
| free_pages((ulong)fusion->ld_drv_map[i], |
| fusion->drv_map_pages); |
| } |
| } |
| |
| return -ENOMEM; |
| } |
| |
| /** |
| * 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; |
| u16 max_cmd; |
| u32 scratch_pad_2; |
| int i = 0, count; |
| |
| fusion = instance->ctrl_context; |
| |
| reg_set = instance->reg_set; |
| |
| megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); |
| |
| /* |
| * 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) * instance->max_mpt_cmds; |
| 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 |
| * (instance->max_mpt_cmds + 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 8 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; |
| instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; |
| fusion->fast_path_io = 0; |
| |
| if (megasas_allocate_raid_maps(instance)) |
| goto fail_ioc_init; |
| |
| if (!megasas_get_map_info(instance)) |
| megasas_sync_map_info(instance); |
| |
| return 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 fusion_context *fusion, |
| struct scsi_cmnd *scmd, u8 status, u8 ext_status, |
| u32 data_length, u8 *sense) |
| { |
| u8 cmd_type; |
| int resid; |
| |
| cmd_type = megasas_cmd_type(scmd); |
| switch (status) { |
| |
| case MFI_STAT_OK: |
| scmd->result = DID_OK << 16; |
| break; |
| |
| case MFI_STAT_SCSI_IO_FAILED: |
| case MFI_STAT_LD_INIT_IN_PROGRESS: |
| scmd->result = (DID_ERROR << 16) | ext_status; |
| break; |
| |
| case MFI_STAT_SCSI_DONE_WITH_ERROR: |
| |
| scmd->result = (DID_OK << 16) | ext_status; |
| if (ext_status == SAM_STAT_CHECK_CONDITION) { |
| memset(scmd->sense_buffer, 0, |
| SCSI_SENSE_BUFFERSIZE); |
| memcpy(scmd->sense_buffer, sense, |
| SCSI_SENSE_BUFFERSIZE); |
| scmd->result |= DRIVER_SENSE << 24; |
| } |
| |
| /* |
| * If the IO request is partially completed, then MR FW will |
| * update "io_request->DataLength" field with actual number of |
| * bytes transferred.Driver will set residual bytes count in |
| * SCSI command structure. |
| */ |
| resid = (scsi_bufflen(scmd) - data_length); |
| scsi_set_resid(scmd, resid); |
| |
| if (resid && |
| ((cmd_type == READ_WRITE_LDIO) || |
| (cmd_type == READ_WRITE_SYSPDIO))) |
| scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" |
| " requested/completed 0x%x/0x%x\n", |
| status, scsi_bufflen(scmd), data_length); |
| break; |
| |
| case MFI_STAT_LD_OFFLINE: |
| case MFI_STAT_DEVICE_NOT_FOUND: |
| scmd->result = DID_BAD_TARGET << 16; |
| break; |
| case MFI_STAT_CONFIG_SEQ_MISMATCH: |
| scmd->result = DID_IMM_RETRY << 16; |
| break; |
| default: |
| scmd->result = DID_ERROR << 16; |
| break; |
| } |
| } |
| |
| /** |
| * megasas_is_prp_possible - |
| * Checks if native NVMe PRPs can be built for the IO |
| * |
| * @instance: Adapter soft state |
| * @scmd: SCSI command from the mid-layer |
| * @sge_count: scatter gather element count. |
| * |
| * Returns: true: PRPs can be built |
| * false: IEEE SGLs needs to be built |
| */ |
| static bool |
| megasas_is_prp_possible(struct megasas_instance *instance, |
| struct scsi_cmnd *scmd, int sge_count) |
| { |
| struct fusion_context *fusion; |
| int i; |
| u32 data_length = 0; |
| struct scatterlist *sg_scmd; |
| bool build_prp = false; |
| u32 mr_nvme_pg_size; |
| |
| mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, |
| MR_DEFAULT_NVME_PAGE_SIZE); |
| fusion = instance->ctrl_context; |
| data_length = scsi_bufflen(scmd); |
| sg_scmd = scsi_sglist(scmd); |
| |
| /* |
| * NVMe uses one PRP for each page (or part of a page) |
| * look at the data length - if 4 pages or less then IEEE is OK |
| * if > 5 pages then we need to build a native SGL |
| * if > 4 and <= 5 pages, then check physical address of 1st SG entry |
| * if this first size in the page is >= the residual beyond 4 pages |
| * then use IEEE, otherwise use native SGL |
| */ |
| |
| if (data_length > (mr_nvme_pg_size * 5)) { |
| build_prp = true; |
| } else if ((data_length > (mr_nvme_pg_size * 4)) && |
| (data_length <= (mr_nvme_pg_size * 5))) { |
| /* check if 1st SG entry size is < residual beyond 4 pages */ |
| if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) |
| build_prp = true; |
| } |
| |
| /* |
| * Below code detects gaps/holes in IO data buffers. |
| * What does holes/gaps mean? |
| * Any SGE except first one in a SGL starts at non NVME page size |
| * aligned address OR Any SGE except last one in a SGL ends at |
| * non NVME page size boundary. |
| * |
| * Driver has already informed block layer by setting boundary rules for |
| * bio merging done at NVME page size boundary calling kernel API |
| * blk_queue_virt_boundary inside slave_config. |
| * Still there is possibility of IO coming with holes to driver because of |
| * IO merging done by IO scheduler. |
| * |
| * With SCSI BLK MQ enabled, there will be no IO with holes as there is no |
| * IO scheduling so no IO merging. |
| * |
| * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and |
| * then sending IOs with holes. |
| * |
| * Though driver can request block layer to disable IO merging by calling- |
| * queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, sdev->request_queue) but |
| * user may tune sysfs parameter- nomerges again to 0 or 1. |
| * |
| * If in future IO scheduling is enabled with SCSI BLK MQ, |
| * this algorithm to detect holes will be required in driver |
| * for SCSI BLK MQ enabled case as well. |
| * |
| * |
| */ |
| scsi_for_each_sg(scmd, sg_scmd, sge_count, i) { |
| if ((i != 0) && (i != (sge_count - 1))) { |
| if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) || |
| mega_mod64(sg_dma_address(sg_scmd), |
| mr_nvme_pg_size)) { |
| build_prp = false; |
| atomic_inc(&instance->sge_holes_type1); |
| break; |
| } |
| } |
| |
| if ((sge_count > 1) && (i == 0)) { |
| if ((mega_mod64((sg_dma_address(sg_scmd) + |
| sg_dma_len(sg_scmd)), |
| mr_nvme_pg_size))) { |
| build_prp = false; |
| atomic_inc(&instance->sge_holes_type2); |
| break; |
| } |
| } |
| |
| if ((sge_count > 1) && (i == (sge_count - 1))) { |
| if (mega_mod64(sg_dma_address(sg_scmd), |
| mr_nvme_pg_size)) { |
| build_prp = false; |
| atomic_inc(&instance->sge_holes_type3); |
| break; |
| } |
| } |
| } |
| |
| return build_prp; |
| } |
| |
| /** |
| * megasas_make_prp_nvme - |
| * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only |
| * |
| * @instance: Adapter soft state |
| * @scmd: SCSI command from the mid-layer |
| * @sgl_ptr: SGL to be filled in |
| * @cmd: Fusion command frame |
| * @sge_count: scatter gather element count. |
| * |
| * Returns: true: PRPs are built |
| * false: IEEE SGLs needs to be built |
| */ |
| static bool |
| megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, |
| struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, |
| struct megasas_cmd_fusion *cmd, int sge_count) |
| { |
| int sge_len, offset, num_prp_in_chain = 0; |
| struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; |
| u64 *ptr_sgl; |
| dma_addr_t ptr_sgl_phys; |
| u64 sge_addr; |
| u32 page_mask, page_mask_result; |
| struct scatterlist *sg_scmd; |
| u32 first_prp_len; |
| bool build_prp = false; |
| int data_len = scsi_bufflen(scmd); |
| struct fusion_context *fusion; |
| u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, |
| MR_DEFAULT_NVME_PAGE_SIZE); |
| |
| fusion = instance->ctrl_context; |
| |
| build_prp = megasas_is_prp_possible(instance, scmd, sge_count); |
| |
| if (!build_prp) |
| return false; |
| |
| /* |
| * Nvme has a very convoluted prp format. One prp is required |
| * for each page or partial page. Driver need to split up OS sg_list |
| * entries if it is longer than one page or cross a page |
| * boundary. Driver also have to insert a PRP list pointer entry as |
| * the last entry in each physical page of the PRP list. |
| * |
| * NOTE: The first PRP "entry" is actually placed in the first |
| * SGL entry in the main message as IEEE 64 format. The 2nd |
| * entry in the main message is the chain element, and the rest |
| * of the PRP entries are built in the contiguous pcie buffer. |
| */ |
| page_mask = mr_nvme_pg_size - 1; |
| ptr_sgl = (u64 *)cmd->sg_frame; |
| ptr_sgl_phys = cmd->sg_frame_phys_addr; |
| memset(ptr_sgl, 0, instance->max_chain_frame_sz); |
| |
| /* Build chain frame element which holds all prps except first*/ |
| main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) |
| ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); |
| |
| main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); |
| main_chain_element->NextChainOffset = 0; |
| main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | |
| IEEE_SGE_FLAGS_SYSTEM_ADDR | |
| MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; |
| |
| /* Build first prp, sge need not to be page aligned*/ |
| ptr_first_sgl = sgl_ptr; |
| sg_scmd = scsi_sglist(scmd); |
| sge_addr = sg_dma_address(sg_scmd); |
| sge_len = sg_dma_len(sg_scmd); |
| |
| offset = (u32)(sge_addr & page_mask); |
| first_prp_len = mr_nvme_pg_size - offset; |
| |
| ptr_first_sgl->Address = cpu_to_le64(sge_addr); |
| ptr_first_sgl->Length = cpu_to_le32(first_prp_len); |
| |
| data_len -= first_prp_len; |
| |
| if (sge_len > first_prp_len) { |
| sge_addr += first_prp_len; |
| sge_len -= first_prp_len; |
| } else if (sge_len == first_prp_len) { |
| sg_scmd = sg_next(sg_scmd); |
| sge_addr = sg_dma_address(sg_scmd); |
| sge_len = sg_dma_len(sg_scmd); |
| } |
| |
| for (;;) { |
| offset = (u32)(sge_addr & page_mask); |
| |
| /* Put PRP pointer due to page boundary*/ |
| page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; |
| if (unlikely(!page_mask_result)) { |
| scmd_printk(KERN_NOTICE, |
| scmd, "page boundary ptr_sgl: 0x%p\n", |
| ptr_sgl); |
| ptr_sgl_phys += 8; |
| *ptr_sgl = cpu_to_le64(ptr_sgl_phys); |
| ptr_sgl++; |
| num_prp_in_chain++; |
| } |
| |
| *ptr_sgl = cpu_to_le64(sge_addr); |
| ptr_sgl++; |
| ptr_sgl_phys += 8; |
| num_prp_in_chain++; |
| |
| sge_addr += mr_nvme_pg_size; |
| sge_len -= mr_nvme_pg_size; |
| data_len -= mr_nvme_pg_size; |
| |
| if (data_len <= 0) |
| break; |
| |
| if (sge_len > 0) |
| continue; |
| |
| sg_scmd = sg_next(sg_scmd); |
| sge_addr = sg_dma_address(sg_scmd); |
| sge_len = sg_dma_len(sg_scmd); |
| } |
| |
| main_chain_element->Length = |
| cpu_to_le32(num_prp_in_chain * sizeof(u64)); |
| |
| atomic_inc(&instance->prp_sgl); |
| return build_prp; |
| } |
| |
| /** |
| * 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 |
| * @sge_count sge count |
| * |
| */ |
| static void |
| 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 sge_count) |
| { |
| int i, sg_processed; |
| 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; |
| } |
| |
| 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); |
| } |
| } |
| atomic_inc(&instance->ieee_sgl); |
| } |
| |
| /** |
| * megasas_make_sgl - Build Scatter Gather List(SGLs) |
| * @scp: SCSI command pointer |
| * @instance: Soft instance of controller |
| * @cmd: Fusion command pointer |
| * |
| * This function will build sgls based on device type. |
| * For nvme drives, there is different way of building sgls in nvme native |
| * format- PRPs(Physical Region Page). |
| * |
| * Returns the number of sg lists actually used, zero if the sg lists |
| * is NULL, or -ENOMEM if the mapping failed |
| */ |
| static |
| int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| struct megasas_cmd_fusion *cmd) |
| { |
| int sge_count; |
| bool build_prp = false; |
| struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; |
| |
| sge_count = scsi_dma_map(scp); |
| |
| if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) |
| return sge_count; |
| |
| sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; |
| if ((le16_to_cpu(cmd->io_request->IoFlags) & |
| MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && |
| (cmd->pd_interface == NVME_PD)) |
| build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, |
| cmd, sge_count); |
| |
| if (!build_prp) |
| megasas_make_sgl_fusion(instance, scp, sgl_chain64, |
| cmd, sge_count); |
| |
| 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; |
| u16 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 | |
| MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | |
| 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_stream_detect - stream detection on read and and write IOs |
| * @instance: Adapter soft state |
| * @cmd: Command to be prepared |
| * @io_info: IO Request info |
| * |
| */ |
| |
| /** stream detection on read and and write IOs */ |
| static void megasas_stream_detect(struct megasas_instance *instance, |
| struct megasas_cmd_fusion *cmd, |
| struct IO_REQUEST_INFO *io_info) |
| { |
| struct fusion_context *fusion = instance->ctrl_context; |
| u32 device_id = io_info->ldTgtId; |
| struct LD_STREAM_DETECT *current_ld_sd |
| = fusion->stream_detect_by_ld[device_id]; |
| u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; |
| u32 shifted_values, unshifted_values; |
| u32 index_value_mask, shifted_values_mask; |
| int i; |
| bool is_read_ahead = false; |
| struct STREAM_DETECT *current_sd; |
| /* find possible stream */ |
| for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { |
| stream_num = (*track_stream >> |
| (i * BITS_PER_INDEX_STREAM)) & |
| STREAM_MASK; |
| current_sd = ¤t_ld_sd->stream_track[stream_num]; |
| /* if we found a stream, update the raid |
| * context and also update the mruBitMap |
| */ |
| /* boundary condition */ |
| if ((current_sd->next_seq_lba) && |
| (io_info->ldStartBlock >= current_sd->next_seq_lba) && |
| (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && |
| (current_sd->is_read == io_info->isRead)) { |
| |
| if ((io_info->ldStartBlock != current_sd->next_seq_lba) && |
| ((!io_info->isRead) || (!is_read_ahead))) |
| /* |
| * Once the API availible we need to change this. |
| * At this point we are not allowing any gap |
| */ |
| continue; |
| |
| SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); |
| current_sd->next_seq_lba = |
| io_info->ldStartBlock + io_info->numBlocks; |
| /* |
| * update the mruBitMap LRU |
| */ |
| shifted_values_mask = |
| (1 << i * BITS_PER_INDEX_STREAM) - 1; |
| shifted_values = ((*track_stream & shifted_values_mask) |
| << BITS_PER_INDEX_STREAM); |
| index_value_mask = |
| STREAM_MASK << i * BITS_PER_INDEX_STREAM; |
| unshifted_values = |
| *track_stream & ~(shifted_values_mask | |
| index_value_mask); |
| *track_stream = |
| unshifted_values | shifted_values | stream_num; |
| return; |
| } |
| } |
| /* |
| * if we did not find any stream, create a new one |
| * from the least recently used |
| */ |
| stream_num = (*track_stream >> |
| ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & |
| STREAM_MASK; |
| current_sd = ¤t_ld_sd->stream_track[stream_num]; |
| current_sd->is_read = io_info->isRead; |
| current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; |
| *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); |
| return; |
| } |
| |
| /** |
| * megasas_set_raidflag_cpu_affinity - This function sets the cpu |
| * affinity (cpu of the controller) and raid_flags in the raid context |
| * based on IO type. |
| * |
| * @praid_context: IO RAID context |
| * @raid: LD raid map |
| * @fp_possible: Is fast path possible? |
| * @is_read: Is read IO? |
| * |
| */ |
| static void |
| megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context, |
| struct MR_LD_RAID *raid, bool fp_possible, |
| u8 is_read, u32 scsi_buff_len) |
| { |
| u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; |
| struct RAID_CONTEXT_G35 *rctx_g35; |
| |
| rctx_g35 = &praid_context->raid_context_g35; |
| if (fp_possible) { |
| if (is_read) { |
| if ((raid->cpuAffinity.pdRead.cpu0) && |
| (raid->cpuAffinity.pdRead.cpu1)) |
| cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; |
| else if (raid->cpuAffinity.pdRead.cpu1) |
| cpu_sel = MR_RAID_CTX_CPUSEL_1; |
| } else { |
| if ((raid->cpuAffinity.pdWrite.cpu0) && |
| (raid->cpuAffinity.pdWrite.cpu1)) |
| cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; |
| else if (raid->cpuAffinity.pdWrite.cpu1) |
| cpu_sel = MR_RAID_CTX_CPUSEL_1; |
| /* Fast path cache by pass capable R0/R1 VD */ |
| if ((raid->level <= 1) && |
| (raid->capability.fp_cache_bypass_capable)) { |
| rctx_g35->routing_flags |= |
| (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); |
| rctx_g35->raid_flags = |
| (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS |
| << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); |
| } |
| } |
| } else { |
| if (is_read) { |
| if ((raid->cpuAffinity.ldRead.cpu0) && |
| (raid->cpuAffinity.ldRead.cpu1)) |
| cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; |
| else if (raid->cpuAffinity.ldRead.cpu1) |
| cpu_sel = MR_RAID_CTX_CPUSEL_1; |
| } else { |
| if ((raid->cpuAffinity.ldWrite.cpu0) && |
| (raid->cpuAffinity.ldWrite.cpu1)) |
| cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; |
| else if (raid->cpuAffinity.ldWrite.cpu1) |
| cpu_sel = MR_RAID_CTX_CPUSEL_1; |
| |
| if (is_stream_detected(rctx_g35) && |
| ((raid->level == 5) || (raid->level == 6)) && |
| (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && |
| (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) |
| cpu_sel = MR_RAID_CTX_CPUSEL_0; |
| } |
| } |
| |
| rctx_g35->routing_flags |= |
| (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); |
| |
| /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT |
| * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. |
| * IO Subtype is not bitmap. |
| */ |
| if ((raid->level == 1) && (!is_read)) { |
| if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) |
| praid_context->raid_context_g35.raid_flags = |
| (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT |
| << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); |
| } |
| } |
| |
| /** |
| * 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) |
| { |
| bool fp_possible; |
| u16 ld; |
| u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; |
| u32 scsi_buff_len; |
| 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; |
| unsigned long spinlock_flags; |
| union RAID_CONTEXT_UNION *praid_context; |
| struct MR_LD_RAID *raid = NULL; |
| struct MR_PRIV_DEVICE *mrdev_priv; |
| |
| device_id = MEGASAS_DEV_INDEX(scp); |
| |
| fusion = instance->ctrl_context; |
| |
| io_request = cmd->io_request; |
| io_request->RaidContext.raid_context.virtual_disk_tgt_id = |
| cpu_to_le16(device_id); |
| io_request->RaidContext.raid_context.status = 0; |
| io_request->RaidContext.raid_context.ex_status = 0; |
| |
| req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; |
| |
| start_lba_lo = 0; |
| start_lba_hi = 0; |
| fp_possible = false; |
| |
| /* |
| * 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_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; |
| scsi_buff_len = scsi_bufflen(scp); |
| io_request->DataLength = cpu_to_le32(scsi_buff_len); |
| |
| if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
| io_info.isRead = 1; |
| |
| local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; |
| ld = MR_TargetIdToLdGet(device_id, local_map_ptr); |
| |
| if (ld < instance->fw_supported_vd_count) |
| raid = MR_LdRaidGet(ld, local_map_ptr); |
| |
| if (!raid || (!fusion->fast_path_io)) { |
| io_request->RaidContext.raid_context.reg_lock_flags = 0; |
| fp_possible = false; |
| } else { |
| if (MR_BuildRaidContext(instance, &io_info, |
| &io_request->RaidContext.raid_context, |
| local_map_ptr, &raidLUN)) |
| fp_possible = (io_info.fpOkForIo > 0) ? true : false; |
| } |
| |
| /* 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; |
| |
| praid_context = &io_request->RaidContext; |
| |
| if (instance->is_ventura) { |
| spin_lock_irqsave(&instance->stream_lock, spinlock_flags); |
| megasas_stream_detect(instance, cmd, &io_info); |
| spin_unlock_irqrestore(&instance->stream_lock, spinlock_flags); |
| /* In ventura if stream detected for a read and it is read ahead |
| * capable make this IO as LDIO |
| */ |
| if (is_stream_detected(&io_request->RaidContext.raid_context_g35) && |
| io_info.isRead && io_info.ra_capable) |
| fp_possible = false; |
| |
| /* FP for Optimal raid level 1. |
| * All large RAID-1 writes (> 32 KiB, both WT and WB modes) |
| * are built by the driver as LD I/Os. |
| * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os |
| * (there is never a reason to process these as buffered writes) |
| * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os |
| * with the SLD bit asserted. |
| */ |
| if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { |
| mrdev_priv = scp->device->hostdata; |
| |
| if (atomic_inc_return(&instance->fw_outstanding) > |
| (instance->host->can_queue)) { |
| fp_possible = false; |
| atomic_dec(&instance->fw_outstanding); |
| } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || |
| (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) { |
| fp_possible = false; |
| atomic_dec(&instance->fw_outstanding); |
| if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) |
| atomic_set(&mrdev_priv->r1_ldio_hint, |
| instance->r1_ldio_hint_default); |
| } |
| } |
| |
| /* If raid is NULL, set CPU affinity to default CPU0 */ |
| if (raid) |
| megasas_set_raidflag_cpu_affinity(praid_context, |
| raid, fp_possible, io_info.isRead, |
| scsi_buff_len); |
| else |
| praid_context->raid_context_g35.routing_flags |= |
| (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); |
| } |
| |
| 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.raid_context.reg_lock_flags == |
| REGION_TYPE_UNUSED) |
| cmd->request_desc->SCSIIO.RequestFlags = |
| (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << |
| MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
| io_request->RaidContext.raid_context.type |
| = MPI2_TYPE_CUDA; |
| io_request->RaidContext.raid_context.nseg = 0x1; |
| io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); |
| io_request->RaidContext.raid_context.reg_lock_flags |= |
| (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | |
| MR_RL_FLAGS_SEQ_NUM_ENABLE); |
| } else if (instance->is_ventura) { |
| io_request->RaidContext.raid_context_g35.nseg_type |= |
| (1 << RAID_CONTEXT_NSEG_SHIFT); |
| io_request->RaidContext.raid_context_g35.nseg_type |= |
| (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); |
| io_request->RaidContext.raid_context_g35.routing_flags |= |
| (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); |
| io_request->IoFlags |= |
| cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); |
| } |
| if (fusion->load_balance_info && |
| (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, local_map_ptr); |
| scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; |
| cmd->pd_r1_lb = io_info.pd_after_lb; |
| if (instance->is_ventura) |
| io_request->RaidContext.raid_context_g35.span_arm |
| = io_info.span_arm; |
| else |
| io_request->RaidContext.raid_context.span_arm |
| = io_info.span_arm; |
| |
| } else |
| scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; |
| |
| if (instance->is_ventura) |
| cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; |
| else |
| cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; |
| |
| 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; |
| cmd->pd_interface = io_info.pd_interface; |
| /* populate the LUN field */ |
| memcpy(io_request->LUN, raidLUN, 8); |
| } else { |
| io_request->RaidContext.raid_context.timeout_value = |
| 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.raid_context.reg_lock_flags |
| == REGION_TYPE_UNUSED)) |
| cmd->request_desc->SCSIIO.RequestFlags = |
| (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << |
| MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
| io_request->RaidContext.raid_context.type |
| = MPI2_TYPE_CUDA; |
| io_request->RaidContext.raid_context.reg_lock_flags |= |
| (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | |
| MR_RL_FLAGS_SEQ_NUM_ENABLE); |
| io_request->RaidContext.raid_context.nseg = 0x1; |
| } else if (instance->is_ventura) { |
| io_request->RaidContext.raid_context_g35.routing_flags |= |
| (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); |
| io_request->RaidContext.raid_context_g35.nseg_type |= |
| (1 << RAID_CONTEXT_NSEG_SHIFT); |
| io_request->RaidContext.raid_context_g35.nseg_type |= |
| (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); |
| } |
| 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 ld; |
| struct MR_DRV_RAID_MAP_ALL *local_map_ptr; |
| struct fusion_context *fusion = instance->ctrl_context; |
| u8 span, physArm; |
| __le16 devHandle; |
| u32 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); |
| 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.raid_context; |
| /* Check with FW team */ |
| pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); |
| pRAID_Context->reg_lock_row_lba = 0; |
| pRAID_Context->reg_lock_length = 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; |
| else { |
| 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->timeout_value = |
| 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->config_seq_num = raid->seqNum; |
| if (!instance->is_ventura) |
| pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; |
| pRAID_Context->timeout_value = |
| 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, |
| bool 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 MR_PRIV_DEVICE *mr_device_priv_data; |
| 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; |
| mr_device_priv_data = scmd->device->hostdata; |
| cmd->pd_interface = mr_device_priv_data->interface_type; |
| |
| io_request = cmd->io_request; |
| /* get RAID_Context pointer */ |
| pRAID_Context = &io_request->RaidContext.raid_context; |
| pRAID_Context->reg_lock_flags = 0; |
| pRAID_Context->reg_lock_row_lba = 0; |
| pRAID_Context->reg_lock_length = 0; |
| io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); |
| io_request->LUN[1] = scmd->device->lun; |
| pRAID_Context->raid_flags = 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 |
| */ |
| /* More than 256 PD/JBOD support for Ventura */ |
| if (instance->support_morethan256jbod) |
| pRAID_Context->virtual_disk_tgt_id = |
| pd_sync->seq[pd_index].pd_target_id; |
| else |
| pRAID_Context->virtual_disk_tgt_id = |
| cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1)); |
| pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum; |
| io_request->DevHandle = pd_sync->seq[pd_index].devHandle; |
| if (instance->is_ventura) { |
| io_request->RaidContext.raid_context_g35.routing_flags |= |
| (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); |
| io_request->RaidContext.raid_context_g35.nseg_type |= |
| (1 << RAID_CONTEXT_NSEG_SHIFT); |
| io_request->RaidContext.raid_context_g35.nseg_type |= |
| (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); |
| } else { |
| pRAID_Context->type = MPI2_TYPE_CUDA; |
| pRAID_Context->nseg = 0x1; |
| pRAID_Context->reg_lock_flags |= |
| (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA); |
| } |
| } else if (fusion->fast_path_io) { |
| pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); |
| pRAID_Context->config_seq_num = 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->virtual_disk_tgt_id = cpu_to_le16(device_id); |
| pRAID_Context->config_seq_num = 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->timeout_value = cpu_to_le16(os_timeout_value); |
| pRAID_Context->virtual_disk_tgt_id = 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->timeout_value = |
| cpu_to_le16((os_timeout_value > timeout_limit) ? |
| timeout_limit : os_timeout_value); |
| if (fusion->adapter_type >= INVADER_SERIES) |
| 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) |
| { |
| int sge_count; |
| u8 cmd_type; |
| struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; |
| struct MR_PRIV_DEVICE *mr_device_priv_data; |
| mr_device_priv_data = scp->device->hostdata; |
| |
| /* 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.raid_context.raid_flags = 0; |
| io_request->RaidContext.raid_context.type = 0; |
| io_request->RaidContext.raid_context.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: |
| megasas_build_syspd_fusion(instance, scp, cmd, true); |
| break; |
| case NON_READ_WRITE_SYSPDIO: |
| if (instance->secure_jbod_support || |
| mr_device_priv_data->is_tm_capable) |
| megasas_build_syspd_fusion(instance, scp, cmd, false); |
| else |
| megasas_build_syspd_fusion(instance, scp, cmd, true); |
| break; |
| default: |
| break; |
| } |
| |
| /* |
| * Construct SGL |
| */ |
| |
| sge_count = megasas_make_sgl(instance, scp, cmd); |
| |
| if (sge_count > instance->max_num_sge || (sge_count < 0)) { |
| dev_err(&instance->pdev->dev, |
| "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", |
| __func__, __LINE__, sge_count, instance->max_num_sge); |
| return 1; |
| } |
| |
| if (instance->is_ventura) { |
| set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); |
| cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); |
| cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); |
| } else { |
| /* numSGE store lower 8 bit of sge_count. |
| * numSGEExt store higher 8 bit of sge_count |
| */ |
| io_request->RaidContext.raid_context.num_sge = sge_count; |
| io_request->RaidContext.raid_context.num_sge_ext = |
| (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; |
| } |
| |
| static union MEGASAS_REQUEST_DESCRIPTOR_UNION * |
| megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) |
| { |
| u8 *p; |
| struct fusion_context *fusion; |
| |
| fusion = instance->ctrl_context; |
| p = fusion->req_frames_desc + |
| sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; |
| |
| return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; |
| } |
| |
| |
| /* megasas_prepate_secondRaid1_IO |
| * It prepares the raid 1 second IO |
| */ |
| void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, |
| struct megasas_cmd_fusion *cmd, |
| struct megasas_cmd_fusion *r1_cmd) |
| { |
| union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; |
| struct fusion_context *fusion; |
| fusion = instance->ctrl_context; |
| req_desc = cmd->request_desc; |
| /* copy the io request frame as well as 8 SGEs data for r1 command*/ |
| memcpy(r1_cmd->io_request, cmd->io_request, |
| (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); |
| memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL, |
| (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); |
| /*sense buffer is different for r1 command*/ |
| r1_cmd->io_request->SenseBufferLowAddress = |
| cpu_to_le32(r1_cmd->sense_phys_addr); |
| r1_cmd->scmd = cmd->scmd; |
| req_desc2 = megasas_get_request_descriptor(instance, |
| (r1_cmd->index - 1)); |
| req_desc2->Words = 0; |
| r1_cmd->request_desc = req_desc2; |
| req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); |
| req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; |
| r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; |
| r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; |
| r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; |
| cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = |
| cpu_to_le16(r1_cmd->index); |
| r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = |
| cpu_to_le16(cmd->index); |
| /*MSIxIndex of both commands request descriptors should be same*/ |
| r1_cmd->request_desc->SCSIIO.MSIxIndex = |
| cmd->request_desc->SCSIIO.MSIxIndex; |
| /*span arm is different for r1 cmd*/ |
| r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = |
| cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; |
| } |
| |
| /** |
| * 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, *r1_cmd = NULL; |
| union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
| u32 index; |
| struct fusion_context *fusion; |
| |
| fusion = instance->ctrl_context; |
| |
| if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && |
| instance->ldio_threshold && |
| (atomic_inc_return(&instance->ldio_outstanding) > |
| instance->ldio_threshold)) { |
| atomic_dec(&instance->ldio_outstanding); |
| return SCSI_MLQUEUE_DEVICE_BUSY; |
| } |
| |
| if (atomic_inc_return(&instance->fw_outstanding) > |
| instance->host->can_queue) { |
| atomic_dec(&instance->fw_outstanding); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| cmd = megasas_get_cmd_fusion(instance, scmd->request->tag); |
| |
| if (!cmd) { |
| atomic_dec(&instance->fw_outstanding); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| index = cmd->index; |
| |
| req_desc = megasas_get_request_descriptor(instance, index-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; |
| atomic_dec(&instance->fw_outstanding); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| 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); |
| /* |
| * if it is raid 1/10 fp write capable. |
| * try to get second command from pool and construct it. |
| * From FW, it has confirmed that lba values of two PDs |
| * corresponds to single R1/10 LD are always same |
| * |
| */ |
| /* driver side count always should be less than max_fw_cmds |
| * to get new command |
| */ |
| if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { |
| r1_cmd = megasas_get_cmd_fusion(instance, |
| (scmd->request->tag + instance->max_fw_cmds)); |
| megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); |
| } |
| |
| |
| /* |
| * Issue the command to the FW |
| */ |
| |
| megasas_fire_cmd_fusion(instance, req_desc); |
| |
| if (r1_cmd) |
| megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); |
| |
| |
| return 0; |
| } |
| |
| /** |
| * megasas_complete_r1_command - |
| * completes R1 FP write commands which has valid peer smid |
| * @instance: Adapter soft state |
| * @cmd_fusion: MPT command frame |
| * |
| */ |
| static inline void |
| megasas_complete_r1_command(struct megasas_instance *instance, |
| struct megasas_cmd_fusion *cmd) |
| { |
| u8 *sense, status, ex_status; |
| u32 data_length; |
| u16 peer_smid; |
| struct fusion_context *fusion; |
| struct megasas_cmd_fusion *r1_cmd = NULL; |
| struct scsi_cmnd *scmd_local = NULL; |
| struct RAID_CONTEXT_G35 *rctx_g35; |
| |
| rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; |
| fusion = instance->ctrl_context; |
| peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid); |
| |
| r1_cmd = fusion->cmd_list[peer_smid - 1]; |
| scmd_local = cmd->scmd; |
| status = rctx_g35->status; |
| ex_status = rctx_g35->ex_status; |
| data_length = cmd->io_request->DataLength; |
| sense = cmd->sense; |
| |
| cmd->cmd_completed = true; |
| |
| /* Check if peer command is completed or not*/ |
| if (r1_cmd->cmd_completed) { |
| rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; |
| if (rctx_g35->status != MFI_STAT_OK) { |
| status = rctx_g35->status; |
| ex_status = rctx_g35->ex_status; |
| data_length = r1_cmd->io_request->DataLength; |
| sense = r1_cmd->sense; |
| } |
| |
| megasas_return_cmd_fusion(instance, r1_cmd); |
| map_cmd_status(fusion, scmd_local, status, ex_status, |
| le32_to_cpu(data_length), sense); |
| if (instance->ldio_threshold && |
| megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) |
| atomic_dec(&instance->ldio_outstanding); |
| scmd_local->SCp.ptr = NULL; |
| megasas_return_cmd_fusion(instance, cmd); |
| scsi_dma_unmap(scmd_local); |
| scmd_local->scsi_done(scmd_local); |
| } |
| } |
| |
| /** |
| * 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, *sense, status, extStatus; |
| u32 device_id, data_length; |
| 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 (atomic_read(&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; |
| |
| scmd_local = cmd_fusion->scmd; |
| status = scsi_io_req->RaidContext.raid_context.status; |
| extStatus = scsi_io_req->RaidContext.raid_context.ex_status; |
| sense = cmd_fusion->sense; |
| data_length = scsi_io_req->DataLength; |
| |
| 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 */ |
| if (fusion->load_balance_info && |
| (cmd_fusion->scmd->SCp.Status & |
| MEGASAS_LOAD_BALANCE_FLAG)) { |
| device_id = MEGASAS_DEV_INDEX(scmd_local); |
| lbinfo = &fusion->load_balance_info[device_id]; |
| atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); |
| cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; |
| } |
| //Fall thru and complete IO |
| case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ |
| atomic_dec(&instance->fw_outstanding); |
| if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { |
| map_cmd_status(fusion, scmd_local, status, |
| extStatus, le32_to_cpu(data_length), |
| sense); |
| if (instance->ldio_threshold && |
| (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) |
| atomic_dec(&instance->ldio_outstanding); |
| scmd_local->SCp.ptr = NULL; |
| megasas_return_cmd_fusion(instance, cmd_fusion); |
| scsi_dma_unmap(scmd_local); |
| scmd_local->scsi_done(scmd_local); |
| } else /* Optimal VD - R1 FP command completion. */ |
| megasas_complete_r1_command(instance, cmd_fusion); |
| 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 (instance->msix_combined) |
| 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 (instance->msix_combined) |
| 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_sync_irqs - Synchronizes all IRQs owned by adapter |
| * @instance: Adapter soft state |
| */ |
| void megasas_sync_irqs(unsigned long instance_addr) |
| { |
| u32 count, i; |
| struct megasas_instance *instance = |
| (struct megasas_instance *)instance_addr; |
| |
| count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; |
| |
| for (i = 0; i < count; i++) |
| synchronize_irq(pci_irq_vector(instance->pdev, i)); |
| } |
| |
| /** |
| * 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 (atomic_read(&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) { |
| if (instance->unload == 0) |
| 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); |
| if (instance->unload == 0) |
| 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 |
| * |
| */ |
| void |
| 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->mfi_frame_size); |
| } |
| |
| /** |
| * 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 = NULL; |
| u16 index; |
| |
| build_mpt_mfi_pass_thru(instance, cmd); |
| index = cmd->context.smid; |
| |
| req_desc = megasas_get_request_descriptor(instance, index - 1); |
| |
| 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); |
| |
| megasas_fire_cmd_fusion(instance, req_desc); |
| return; |
| } |
| |
| /** |
| * 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, 1<<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; |
| |
| for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { |
| instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); |
| if (!instance->crash_buf[i]) { |
| dev_info(&instance->pdev->dev, "Firmware crash dump " |
| "memory allocation failed at index %d\n", i); |
| break; |
| } |
| } |
| 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]) |
| vfree(instance->crash_buf[i]); |
| } |
| 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); |
| megasas_complete_cmd_dpc_fusion((unsigned long)instance); |
| if (instance->requestorId && reason) { |
| dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" |
| " state while polling during" |
| " I/O timeout handling for %d\n", |
| instance->host->host_no); |
| *convert = 1; |
| } |
| |
| retval = 1; |
| goto out; |
| } |
| |
| if (reason == MFI_IO_TIMEOUT_OCR) { |
| dev_info(&instance->pdev->dev, |
| "MFI IO is timed out, initiating OCR\n"); |
| megasas_complete_cmd_dpc_fusion((unsigned long)instance); |
| 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 == SCSIIO_TIMEOUT_OCR)) { |
| 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; |
| } |
| } |
| } |
| |
| megasas_complete_cmd_dpc_fusion((unsigned long)instance); |
| 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); |
| } |
| 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); |
| *convert = 1; |
| 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; |
| |
| /* Do not refire shutdown command */ |
| if (le32_to_cpu(cmd_mfi->frame->dcmd.opcode) == |
| MR_DCMD_CTRL_SHUTDOWN) { |
| cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; |
| megasas_complete_cmd(instance, cmd_mfi, DID_OK); |
| 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 = NULL; |
| 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)); |
| |
| cmd_fusion->request_desc = req_desc; |
| req_desc->Words = 0; |
| |
| 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: |
| scsi_lookup = fusion->cmd_list[smid_task - 1]; |
| |
| if (scsi_lookup->scmd == NULL) |
| break; |
| else { |
| instance->instancet->disable_intr(instance); |
| megasas_sync_irqs((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); |
| megasas_sync_irqs((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 (!MEGASAS_IS_LOGICAL(sdev)) { |
| 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; |
| |
| scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd); |
| scsi_print_command(scmd); |
| |
| if (atomic_read(&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; |
| |
| sdev_printk(KERN_INFO, scmd->device, |
| "target reset called for scmd(%p)\n", scmd); |
| |
| if (atomic_read(&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; |
| } |
| |
| /*SRIOV get other instance in cluster if any*/ |
| struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) |
| { |
| int i; |
| |
| for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { |
| if (megasas_mgmt_info.instance[i] && |
| (megasas_mgmt_info.instance[i] != instance) && |
| megasas_mgmt_info.instance[i]->requestorId && |
| megasas_mgmt_info.instance[i]->peerIsPresent && |
| (memcmp((megasas_mgmt_info.instance[i]->clusterId), |
| instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) |
| return megasas_mgmt_info.instance[i]; |
| } |
| return NULL; |
| } |
| |
| /* Check for a second path that is currently UP */ |
| int megasas_check_mpio_paths(struct megasas_instance *instance, |
| struct scsi_cmnd *scmd) |
| { |
| struct megasas_instance *peer_instance = NULL; |
| int retval = (DID_REQUEUE << 16); |
| |
| if (instance->peerIsPresent) { |
| peer_instance = megasas_get_peer_instance(instance); |
| if ((peer_instance) && |
| (atomic_read(&peer_instance->adprecovery) == |
| MEGASAS_HBA_OPERATIONAL)) |
| retval = (DID_NO_CONNECT << 16); |
| } |
| return retval; |
| } |
| |
| /* Core fusion reset function */ |
| int megasas_reset_fusion(struct Scsi_Host *shost, int reason) |
| { |
| int retval = SUCCESS, i, j, convert = 0; |
| struct megasas_instance *instance; |
| struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; |
| 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 (atomic_read(&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"); |
| atomic_set(&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 ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && |
| (io_timeout_in_crash_mode < 80)); |
| |
| if (atomic_read(&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); |
| atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); |
| instance->instancet->disable_intr(instance); |
| megasas_sync_irqs((unsigned long)instance); |
| |
| /* First try waiting for commands to complete */ |
| if (megasas_wait_for_outstanding_fusion(instance, reason, |
| &convert)) { |
| atomic_set(&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; |
| |
| if (megasas_dbg_lvl & OCR_LOGS) |
| dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); |
| |
| /* Now return commands back to the OS */ |
| for (i = 0 ; i < instance->max_scsi_cmds; i++) { |
| cmd_fusion = fusion->cmd_list[i]; |
| /*check for extra commands issued by driver*/ |
| if (instance->is_ventura) { |
| r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; |
| megasas_return_cmd_fusion(instance, r1_cmd); |
| } |
| scmd_local = cmd_fusion->scmd; |
| if (cmd_fusion->scmd) { |
| if (megasas_dbg_lvl & OCR_LOGS) { |
| sdev_printk(KERN_INFO, |
| cmd_fusion->scmd->device, "SMID: 0x%x\n", |
| cmd_fusion->index); |
| scsi_print_command(cmd_fusion->scmd); |
| } |
| |
| scmd_local->result = |
| megasas_check_mpio_paths(instance, |
| scmd_local); |
| if (instance->ldio_threshold && |
| megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) |
| atomic_dec(&instance->ldio_outstanding); |
| megasas_return_cmd_fusion(instance, cmd_fusion); |
| scsi_dma_unmap(scmd_local); |
| scmd_local->scsi_done(scmd_local); |
| } |
| } |
| |
| atomic_set(&instance->fw_outstanding, 0); |
| |
| 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); |
| goto transition_to_ready; |
| } |
| |
| /* 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; |
| transition_to_ready: |
| /* 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); |
| if (instance->requestorId && !reason) |
| goto fail_kill_adapter; |
| else |
| continue; |
| } |
| megasas_reset_reply_desc(instance); |
| megasas_fusion_update_can_queue(instance, OCR_CONTEXT); |
| |
| if (megasas_ioc_init_fusion(instance)) { |
| if (instance->requestorId && !reason) |
| goto fail_kill_adapter; |
| else |
| 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; |
| goto out; |
| } |
| /* Reset load balance info */ |
| if (fusion->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_set_dynamic_target_properties(sdev); |
| |
| /* reset stream detection array */ |
| if (instance->is_ventura) { |
| for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { |
| memset(fusion->stream_detect_by_ld[j], |
| 0, sizeof(struct LD_STREAM_DETECT)); |
| fusion->stream_detect_by_ld[j]->mru_bit_map |
| = MR_STREAM_BITMAP; |
| } |
| } |
| |
| clear_bit(MEGASAS_FUSION_IN_RESET, |
| &instance->reset_flags); |
| instance->instancet->enable_intr(instance); |
| atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); |
| |
| dev_info(&instance->pdev->dev, "Interrupts are enabled and" |
| " controller is OPERATIONAL for scsi:%d\n", |
| instance->host->host_no); |
| |
| /* 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; |
| } |
| |
| 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; |
| |
| /* Adapter reset completed successfully */ |
| dev_warn(&instance->pdev->dev, |
| "Reset successful for scsi%d.\n", |
| instance->host->host_no); |
| |
| goto out; |
| } |
| fail_kill_adapter: |
| /* 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); |
| atomic_set(&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); |
| } |
| |
| /* Allocate fusion context */ |
| int |
| megasas_alloc_fusion_context(struct megasas_instance *instance) |
| { |
| struct fusion_context *fusion; |
| |
| instance->ctrl_context_pages = get_order(sizeof(struct fusion_context)); |
| instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, |
| instance->ctrl_context_pages); |
| if (!instance->ctrl_context) { |
| /* fall back to using vmalloc for fusion_context */ |
| instance->ctrl_context = vzalloc(sizeof(struct fusion_context)); |
| if (!instance->ctrl_context) { |
| dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); |
| return -ENOMEM; |
| } |
| } |
| |
| fusion = instance->ctrl_context; |
| |
| fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * |
| sizeof(struct LD_LOAD_BALANCE_INFO)); |
| fusion->load_balance_info = |
| (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, |
| fusion->load_balance_info_pages); |
| if (!fusion->load_balance_info) { |
| fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT * |
| sizeof(struct LD_LOAD_BALANCE_INFO)); |
| if (!fusion->load_balance_info) |
| dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " |
| "continuing without Load Balance support\n"); |
| } |
| |
| return 0; |
| } |
| |
| void |
| megasas_free_fusion_context(struct megasas_instance *instance) |
| { |
| struct fusion_context *fusion = instance->ctrl_context; |
| |
| if (fusion) { |
| if (fusion->load_balance_info) { |
| if (is_vmalloc_addr(fusion->load_balance_info)) |
| vfree(fusion->load_balance_info); |
| else |
| free_pages((ulong)fusion->load_balance_info, |
| fusion->load_balance_info_pages); |
| } |
| |
| if (is_vmalloc_addr(fusion)) |
| vfree(fusion); |
| else |
| free_pages((ulong)fusion, |
| instance->ctrl_context_pages); |
| } |
| } |
| |
| 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, |
| }; |