--- /dev/null
+/*
+ * 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 <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_dbg.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 int resetwaittime;
+
+
+
+/**
+ * megasas_enable_intr_fusion - Enables interrupts
+ * @regs: MFI register set
+ */
+void
+megasas_enable_intr_fusion(struct megasas_instance *instance)
+{
+ struct megasas_register_set __iomem *regs;
+ regs = instance->reg_set;
+
+ 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 free command from the pool
+ */
+struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
+ *instance)
+{
+ unsigned long flags;
+ struct fusion_context *fusion =
+ (struct fusion_context *)instance->ctrl_context;
+ struct megasas_cmd_fusion *cmd = NULL;
+
+ spin_lock_irqsave(&fusion->mpt_pool_lock, flags);
+
+ if (!list_empty(&fusion->cmd_pool)) {
+ cmd = list_entry((&fusion->cmd_pool)->next,
+ struct megasas_cmd_fusion, list);
+ list_del_init(&cmd->list);
+ } else {
+ printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
+ }
+
+ spin_unlock_irqrestore(&fusion->mpt_pool_lock, flags);
+ return cmd;
+}
+
+/**
+ * megasas_return_cmd_fusion - Return a cmd to free command pool
+ * @instance: Adapter soft state
+ * @cmd: Command packet to be returned to free command pool
+ */
+inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
+ struct megasas_cmd_fusion *cmd)
+{
+ unsigned long flags;
+ struct fusion_context *fusion =
+ (struct fusion_context *)instance->ctrl_context;
+
+ spin_lock_irqsave(&fusion->mpt_pool_lock, flags);
+
+ cmd->scmd = NULL;
+ cmd->sync_cmd_idx = (u32)ULONG_MAX;
+ memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
+ list_add(&cmd->list, (&fusion->cmd_pool)->next);
+
+ spin_unlock_irqrestore(&fusion->mpt_pool_lock, flags);
+}
+
+/**
+ * megasas_return_mfi_mpt_pthr - Return a mfi and mpt to free command pool
+ * @instance: Adapter soft state
+ * @cmd_mfi: MFI Command packet to be returned to free command pool
+ * @cmd_mpt: MPT Command packet to be returned to free command pool
+ */
+inline void megasas_return_mfi_mpt_pthr(struct megasas_instance *instance,
+ struct megasas_cmd *cmd_mfi,
+ struct megasas_cmd_fusion *cmd_fusion)
+{
+ unsigned long flags;
+
+ /*
+ * TO DO: optimize this code and use only one lock instead of two
+ * locks being used currently- mpt_pool_lock is acquired
+ * inside mfi_pool_lock
+ */
+ spin_lock_irqsave(&instance->mfi_pool_lock, flags);
+ megasas_return_cmd_fusion(instance, cmd_fusion);
+ if (atomic_read(&cmd_mfi->mfi_mpt_pthr) != MFI_MPT_ATTACHED)
+ dev_err(&instance->pdev->dev, "Possible bug from %s %d\n",
+ __func__, __LINE__);
+ atomic_set(&cmd_mfi->mfi_mpt_pthr, MFI_MPT_DETACHED);
+ __megasas_return_cmd(instance, cmd_mfi);
+ spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
+}
+
+/**
+ * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
+ * @instance: Adapter soft state
+ */
+static void megasas_teardown_frame_pool_fusion(
+ struct megasas_instance *instance)
+{
+ int i;
+ struct fusion_context *fusion = instance->ctrl_context;
+
+ u16 max_cmd = instance->max_fw_cmds;
+
+ struct megasas_cmd_fusion *cmd;
+
+ if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
+ printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
+ "sense pool : %p\n", fusion->sg_dma_pool,
+ fusion->sense_dma_pool);
+ return;
+ }
+
+ /*
+ * Return all frames to pool
+ */
+ for (i = 0; i < max_cmd; i++) {
+
+ cmd = fusion->cmd_list[i];
+
+ if (cmd->sg_frame)
+ pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
+ cmd->sg_frame_phys_addr);
+
+ if (cmd->sense)
+ pci_pool_free(fusion->sense_dma_pool, cmd->sense,
+ cmd->sense_phys_addr);
+ }
+
+ /*
+ * Now destroy the pool itself
+ */
+ pci_pool_destroy(fusion->sg_dma_pool);
+ pci_pool_destroy(fusion->sense_dma_pool);
+
+ fusion->sg_dma_pool = NULL;
+ fusion->sense_dma_pool = NULL;
+}
+
+/**
+ * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
+ * @instance: Adapter soft state
+ */
+void
+megasas_free_cmds_fusion(struct megasas_instance *instance)
+{
+ int i;
+ struct fusion_context *fusion = instance->ctrl_context;
+
+ u32 max_cmds, req_sz, reply_sz, io_frames_sz;
+
+
+ req_sz = fusion->request_alloc_sz;
+ reply_sz = fusion->reply_alloc_sz;
+ io_frames_sz = fusion->io_frames_alloc_sz;
+
+ max_cmds = instance->max_fw_cmds;
+
+ /* Free descriptors and request Frames memory */
+ if (fusion->req_frames_desc)
+ dma_free_coherent(&instance->pdev->dev, req_sz,
+ fusion->req_frames_desc,
+ fusion->req_frames_desc_phys);
+
+ if (fusion->reply_frames_desc) {
+ pci_pool_free(fusion->reply_frames_desc_pool,
+ fusion->reply_frames_desc,
+ fusion->reply_frames_desc_phys);
+ pci_pool_destroy(fusion->reply_frames_desc_pool);
+ }
+
+ if (fusion->io_request_frames) {
+ pci_pool_free(fusion->io_request_frames_pool,
+ fusion->io_request_frames,
+ fusion->io_request_frames_phys);
+ pci_pool_destroy(fusion->io_request_frames_pool);
+ }
+
+ /* Free the Fusion frame pool */
+ megasas_teardown_frame_pool_fusion(instance);
+
+ /* Free all the commands in the cmd_list */
+ for (i = 0; i < max_cmds; i++)
+ kfree(fusion->cmd_list[i]);
+
+ /* Free the cmd_list buffer itself */
+ kfree(fusion->cmd_list);
+ fusion->cmd_list = NULL;
+
+ INIT_LIST_HEAD(&fusion->cmd_pool);
+}
+
+/**
+ * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
+ * @instance: Adapter soft state
+ *
+ */
+static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
+{
+ int i;
+ u32 max_cmd;
+ struct fusion_context *fusion;
+ struct megasas_cmd_fusion *cmd;
+ u32 total_sz_chain_frame;
+
+ fusion = instance->ctrl_context;
+ max_cmd = instance->max_fw_cmds;
+
+ total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
+
+ /*
+ * Use DMA pool facility provided by PCI layer
+ */
+
+ fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
+ instance->pdev,
+ total_sz_chain_frame, 4,
+ 0);
+ if (!fusion->sg_dma_pool) {
+ printk(KERN_DEBUG "megasas: failed to setup request pool "
+ "fusion\n");
+ return -ENOMEM;
+ }
+ fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
+ instance->pdev,
+ SCSI_SENSE_BUFFERSIZE, 64, 0);
+
+ if (!fusion->sense_dma_pool) {
+ printk(KERN_DEBUG "megasas: failed to setup sense pool "
+ "fusion\n");
+ pci_pool_destroy(fusion->sg_dma_pool);
+ fusion->sg_dma_pool = NULL;
+ return -ENOMEM;
+ }
+
+ /*
+ * Allocate and attach a frame to each of the commands in cmd_list
+ */
+ for (i = 0; i < max_cmd; i++) {
+
+ cmd = fusion->cmd_list[i];
+
+ cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
+ GFP_KERNEL,
+ &cmd->sg_frame_phys_addr);
+
+ cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
+ GFP_KERNEL, &cmd->sense_phys_addr);
+ /*
+ * megasas_teardown_frame_pool_fusion() takes care of freeing
+ * whatever has been allocated
+ */
+ if (!cmd->sg_frame || !cmd->sense) {
+ printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
+ megasas_teardown_frame_pool_fusion(instance);
+ return -ENOMEM;
+ }
+ }
+ return 0;
+}
+
+/**
+ * megasas_alloc_cmds_fusion - Allocates the command packets
+ * @instance: Adapter soft state
+ *
+ *
+ * Each frame has a 32-bit field called context. This context is used to get
+ * back the megasas_cmd_fusion from the frame when a frame gets completed
+ * In this driver, the 32 bit values are the indices into an array cmd_list.
+ * This array is used only to look up the megasas_cmd_fusion given the context.
+ * The free commands themselves are maintained in a linked list called cmd_pool.
+ *
+ * cmds are formed in the io_request and sg_frame members of the
+ * megasas_cmd_fusion. The context field is used to get a request descriptor
+ * and is used as SMID of the cmd.
+ * SMID value range is from 1 to max_fw_cmds.
+ */
+int
+megasas_alloc_cmds_fusion(struct megasas_instance *instance)
+{
+ int i, j, count;
+ u32 max_cmd, io_frames_sz;
+ struct fusion_context *fusion;
+ struct megasas_cmd_fusion *cmd;
+ union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
+ u32 offset;
+ dma_addr_t io_req_base_phys;
+ u8 *io_req_base;
+
+ fusion = instance->ctrl_context;
+
+ max_cmd = instance->max_fw_cmds;
+
+ fusion->req_frames_desc =
+ dma_alloc_coherent(&instance->pdev->dev,
+ fusion->request_alloc_sz,
+ &fusion->req_frames_desc_phys, GFP_KERNEL);
+
+ if (!fusion->req_frames_desc) {
+ printk(KERN_ERR "megasas; Could not allocate memory for "
+ "request_frames\n");
+ goto fail_req_desc;
+ }
+
+ count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
+ fusion->reply_frames_desc_pool =
+ pci_pool_create("reply_frames pool", instance->pdev,
+ fusion->reply_alloc_sz * count, 16, 0);
+
+ if (!fusion->reply_frames_desc_pool) {
+ printk(KERN_ERR "megasas; Could not allocate memory for "
+ "reply_frame pool\n");
+ goto fail_reply_desc;
+ }
+
+ fusion->reply_frames_desc =
+ pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
+ &fusion->reply_frames_desc_phys);
+ if (!fusion->reply_frames_desc) {
+ printk(KERN_ERR "megasas; Could not allocate memory for "
+ "reply_frame pool\n");
+ pci_pool_destroy(fusion->reply_frames_desc_pool);
+ goto fail_reply_desc;
+ }
+
+ reply_desc = fusion->reply_frames_desc;
+ for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
+ reply_desc->Words = ULLONG_MAX;
+
+ io_frames_sz = fusion->io_frames_alloc_sz;
+
+ fusion->io_request_frames_pool =
+ pci_pool_create("io_request_frames pool", instance->pdev,
+ fusion->io_frames_alloc_sz, 16, 0);
+
+ if (!fusion->io_request_frames_pool) {
+ printk(KERN_ERR "megasas: Could not allocate memory for "
+ "io_request_frame pool\n");
+ goto fail_io_frames;
+ }
+
+ fusion->io_request_frames =
+ pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
+ &fusion->io_request_frames_phys);
+ if (!fusion->io_request_frames) {
+ printk(KERN_ERR "megasas: Could not allocate memory for "
+ "io_request_frames frames\n");
+ pci_pool_destroy(fusion->io_request_frames_pool);
+ goto fail_io_frames;
+ }
+
+ /*
+ * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
+ * Allocate the dynamic array first and then allocate individual
+ * commands.
+ */
+ fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
+ * max_cmd, GFP_KERNEL);
+
+ if (!fusion->cmd_list) {
+ printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
+ "memory for cmd_list_fusion\n");
+ goto fail_cmd_list;
+ }
+
+ max_cmd = instance->max_fw_cmds;
+ for (i = 0; i < max_cmd; i++) {
+ fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
+ GFP_KERNEL);
+ if (!fusion->cmd_list[i]) {
+ printk(KERN_ERR "Could not alloc cmd list fusion\n");
+
+ for (j = 0; j < i; j++)
+ kfree(fusion->cmd_list[j]);
+
+ kfree(fusion->cmd_list);
+ fusion->cmd_list = NULL;
+ goto fail_cmd_list;
+ }
+ }
+
+ /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
+ io_req_base = fusion->io_request_frames +
+ MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
+ io_req_base_phys = fusion->io_request_frames_phys +
+ MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
+
+ /*
+ * Add all the commands to command pool (fusion->cmd_pool)
+ */
+
+ /* SMID 0 is reserved. Set SMID/index from 1 */
+ for (i = 0; i < max_cmd; i++) {
+ cmd = fusion->cmd_list[i];
+ offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
+ memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
+ cmd->index = i + 1;
+ cmd->scmd = NULL;
+ cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
+ cmd->instance = instance;
+ cmd->io_request =
+ (struct MPI2_RAID_SCSI_IO_REQUEST *)
+ (io_req_base + offset);
+ memset(cmd->io_request, 0,
+ sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
+ cmd->io_request_phys_addr = io_req_base_phys + offset;
+
+ list_add_tail(&cmd->list, &fusion->cmd_pool);
+ }
+
+ /*
+ * Create a frame pool and assign one frame to each cmd
+ */
+ if (megasas_create_frame_pool_fusion(instance)) {
+ printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
+ megasas_free_cmds_fusion(instance);
+ goto fail_req_desc;
+ }
+
+ return 0;
+
+fail_cmd_list:
+ pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
+ fusion->io_request_frames_phys);
+ pci_pool_destroy(fusion->io_request_frames_pool);
+fail_io_frames:
+ dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
+ fusion->reply_frames_desc,
+ fusion->reply_frames_desc_phys);
+ pci_pool_free(fusion->reply_frames_desc_pool,
+ fusion->reply_frames_desc,
+ fusion->reply_frames_desc_phys);
+ pci_pool_destroy(fusion->reply_frames_desc_pool);
+
+fail_reply_desc:
+ dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
+ fusion->req_frames_desc,
+ fusion->req_frames_desc_phys);
+fail_req_desc:
+ return -ENOMEM;
+}
+
+/**
+ * wait_and_poll - Issues a polling command
+ * @instance: Adapter soft state
+ * @cmd: Command packet to be issued
+ *
+ * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
+ */
+int
+wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
+ int 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 == 0xff) {
+ if (fusion)
+ megasas_return_mfi_mpt_pthr(instance, cmd,
+ cmd->mpt_pthr_cmd_blocked);
+ return -ETIME;
+ }
+
+ return 0;
+}
+
+/**
+ * megasas_ioc_init_fusion - Initializes the FW
+ * @instance: Adapter soft state
+ *
+ * Issues the IOC Init cmd
+ */
+int
+megasas_ioc_init_fusion(struct megasas_instance *instance)
+{
+ struct megasas_init_frame *init_frame;
+ struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
+ dma_addr_t ioc_init_handle;
+ struct megasas_cmd *cmd;
+ u8 ret;
+ struct fusion_context *fusion;
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
+ int i;
+ struct megasas_header *frame_hdr;
+
+ fusion = instance->ctrl_context;
+
+ cmd = megasas_get_cmd(instance);
+
+ if (!cmd) {
+ printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
+ ret = 1;
+ goto fail_get_cmd;
+ }
+
+ IOCInitMessage =
+ dma_alloc_coherent(&instance->pdev->dev,
+ sizeof(struct MPI2_IOC_INIT_REQUEST),
+ &ioc_init_handle, GFP_KERNEL);
+
+ if (!IOCInitMessage) {
+ printk(KERN_ERR "Could not allocate memory for "
+ "IOCInitMessage\n");
+ ret = 1;
+ goto fail_fw_init;
+ }
+
+ memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
+
+ IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
+ IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
+ IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
+ IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
+ IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
+
+ IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
+ IOCInitMessage->ReplyDescriptorPostQueueAddress = cpu_to_le64(fusion->reply_frames_desc_phys);
+ IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
+ IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
+ init_frame = (struct megasas_init_frame *)cmd->frame;
+ memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
+
+ frame_hdr = &cmd->frame->hdr;
+ frame_hdr->cmd_status = 0xFF;
+ frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
+
+ init_frame->cmd = MFI_CMD_INIT;
+ init_frame->cmd_status = 0xFF;
+
+ /* driver support Extended MSIX */
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
+ init_frame->driver_operations.
+ mfi_capabilities.support_additional_msix = 1;
+ /* driver supports HA / Remote LUN over Fast Path interface */
+ init_frame->driver_operations.mfi_capabilities.support_fp_remote_lun
+ = 1;
+ init_frame->driver_operations.mfi_capabilities.support_max_255lds
+ = 1;
+ init_frame->driver_operations.mfi_capabilities.support_ndrive_r1_lb
+ = 1;
+ init_frame->driver_operations.mfi_capabilities.security_protocol_cmds_fw
+ = 1;
+ /* Convert capability to LE32 */
+ cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
+
+ init_frame->queue_info_new_phys_addr_hi =
+ cpu_to_le32(upper_32_bits(ioc_init_handle));
+ init_frame->queue_info_new_phys_addr_lo =
+ cpu_to_le32(lower_32_bits(ioc_init_handle));
+ init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
+
+ req_desc.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;
+ }
+
+ instance->instancet->fire_cmd(instance, req_desc.u.low,
+ req_desc.u.high, instance->reg_set);
+
+ 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;
+ }
+ printk(KERN_ERR "megasas:IOC Init cmd success\n");
+
+ ret = 0;
+
+fail_fw_init:
+ megasas_return_cmd(instance, cmd);
+ if (IOCInitMessage)
+ dma_free_coherent(&instance->pdev->dev,
+ sizeof(struct MPI2_IOC_INIT_REQUEST),
+ IOCInitMessage, ioc_init_handle);
+fail_get_cmd:
+ return ret;
+}
+
+/*
+ * megasas_get_ld_map_info - Returns FW's ld_map structure
+ * @instance: Adapter soft state
+ * @pend: Pend the command or not
+ * Issues an internal command (DCMD) to get the FW's controller PD
+ * list structure. This information is mainly used to find out SYSTEM
+ * supported by the FW.
+ * 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) {
+ printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
+ return -ENOMEM;
+ }
+
+ fusion = instance->ctrl_context;
+
+ if (!fusion) {
+ megasas_return_cmd(instance, cmd);
+ return -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) {
+ printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
+ megasas_return_cmd(instance, cmd);
+ return -ENOMEM;
+ }
+
+ memset(ci, 0, fusion->max_map_sz);
+ memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+#if VD_EXT_DEBUG
+ dev_dbg(&instance->pdev->dev,
+ "%s sending MR_DCMD_LD_MAP_GET_INFO with size %d\n",
+ __func__, cpu_to_le32(size_map_info));
+#endif
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0xFF;
+ dcmd->sge_count = 1;
+ dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+ dcmd->timeout = 0;
+ dcmd->pad_0 = 0;
+ dcmd->data_xfer_len = cpu_to_le32(size_map_info);
+ dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
+ dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
+ dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
+
+ if (instance->ctrl_context && !instance->mask_interrupts)
+ ret = megasas_issue_blocked_cmd(instance, cmd,
+ MEGASAS_BLOCKED_CMD_TIMEOUT);
+ else
+ ret = megasas_issue_polled(instance, cmd);
+
+ if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
+ megasas_return_mfi_mpt_pthr(instance, cmd,
+ cmd->mpt_pthr_cmd_blocked);
+ else
+ megasas_return_cmd(instance, cmd);
+
+ return ret;
+}
+
+u8
+megasas_get_map_info(struct megasas_instance *instance)
+{
+ struct fusion_context *fusion = instance->ctrl_context;
+
+ fusion->fast_path_io = 0;
+ if (!megasas_get_ld_map_info(instance)) {
+ if (MR_ValidateMapInfo(instance)) {
+ fusion->fast_path_io = 1;
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/*
+ * megasas_sync_map_info - Returns FW's ld_map structure
+ * @instance: Adapter soft state
+ *
+ * Issues an internal command (DCMD) to get the FW's controller PD
+ * list structure. This information is mainly used to find out SYSTEM
+ * supported by the FW.
+ */
+int
+megasas_sync_map_info(struct megasas_instance *instance)
+{
+ int ret = 0, i;
+ struct megasas_cmd *cmd;
+ struct megasas_dcmd_frame *dcmd;
+ u32 size_sync_info, num_lds;
+ struct fusion_context *fusion;
+ struct MR_LD_TARGET_SYNC *ci = NULL;
+ struct MR_DRV_RAID_MAP_ALL *map;
+ struct MR_LD_RAID *raid;
+ struct MR_LD_TARGET_SYNC *ld_sync;
+ dma_addr_t ci_h = 0;
+ u32 size_map_info;
+
+ cmd = megasas_get_cmd(instance);
+
+ if (!cmd) {
+ printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
+ "info.\n");
+ return -ENOMEM;
+ }
+
+ fusion = instance->ctrl_context;
+
+ if (!fusion) {
+ megasas_return_cmd(instance, cmd);
+ return 1;
+ }
+
+ map = fusion->ld_drv_map[instance->map_id & 1];
+
+ num_lds = le16_to_cpu(map->raidMap.ldCount);
+
+ dcmd = &cmd->frame->dcmd;
+
+ size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
+
+ memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+ ci = (struct MR_LD_TARGET_SYNC *)
+ fusion->ld_map[(instance->map_id - 1) & 1];
+ memset(ci, 0, fusion->max_map_sz);
+
+ ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
+
+ ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
+
+ for (i = 0; i < num_lds; i++, ld_sync++) {
+ raid = MR_LdRaidGet(i, map);
+ ld_sync->targetId = MR_GetLDTgtId(i, map);
+ ld_sync->seqNum = raid->seqNum;
+ }
+
+ size_map_info = fusion->current_map_sz;
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0xFF;
+ dcmd->sge_count = 1;
+ dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
+ dcmd->timeout = 0;
+ dcmd->pad_0 = 0;
+ dcmd->data_xfer_len = cpu_to_le32(size_map_info);
+ dcmd->mbox.b[0] = num_lds;
+ dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
+ dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
+ dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
+ dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
+
+ instance->map_update_cmd = cmd;
+
+ instance->instancet->issue_dcmd(instance, cmd);
+
+ return ret;
+}
+
+/*
+ * meagasas_display_intel_branding - Display branding string
+ * @instance: per adapter object
+ *
+ * Return nothing.
+ */
+static void
+megasas_display_intel_branding(struct megasas_instance *instance)
+{
+ if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
+ return;
+
+ switch (instance->pdev->device) {
+ case PCI_DEVICE_ID_LSI_INVADER:
+ switch (instance->pdev->subsystem_device) {
+ case MEGARAID_INTEL_RS3DC080_SSDID:
+ dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
+ instance->host->host_no,
+ MEGARAID_INTEL_RS3DC080_BRANDING);
+ break;
+ case MEGARAID_INTEL_RS3DC040_SSDID:
+ dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
+ instance->host->host_no,
+ MEGARAID_INTEL_RS3DC040_BRANDING);
+ break;
+ case MEGARAID_INTEL_RS3SC008_SSDID:
+ dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
+ instance->host->host_no,
+ MEGARAID_INTEL_RS3SC008_BRANDING);
+ break;
+ case MEGARAID_INTEL_RS3MC044_SSDID:
+ dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
+ instance->host->host_no,
+ MEGARAID_INTEL_RS3MC044_BRANDING);
+ break;
+ default:
+ break;
+ }
+ break;
+ case PCI_DEVICE_ID_LSI_FURY:
+ switch (instance->pdev->subsystem_device) {
+ case MEGARAID_INTEL_RS3WC080_SSDID:
+ dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
+ instance->host->host_no,
+ MEGARAID_INTEL_RS3WC080_BRANDING);
+ break;
+ case MEGARAID_INTEL_RS3WC040_SSDID:
+ dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
+ instance->host->host_no,
+ MEGARAID_INTEL_RS3WC040_BRANDING);
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * megasas_init_adapter_fusion - Initializes the FW
+ * @instance: Adapter soft state
+ *
+ * This is the main function for initializing firmware.
+ */
+u32
+megasas_init_adapter_fusion(struct megasas_instance *instance)
+{
+ struct megasas_register_set __iomem *reg_set;
+ struct fusion_context *fusion;
+ u32 max_cmd;
+ int i = 0, count;
+
+ fusion = instance->ctrl_context;
+
+ reg_set = instance->reg_set;
+
+ /*
+ * Get various operational parameters from status register
+ */
+ instance->max_fw_cmds =
+ instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
+ instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
+
+ /*
+ * Reduce the max supported cmds by 1. This is to ensure that the
+ * reply_q_sz (1 more than the max cmd that driver may send)
+ * does not exceed max cmds that the FW can support
+ */
+ instance->max_fw_cmds = instance->max_fw_cmds-1;
+
+ /*
+ * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
+ */
+ instance->max_mfi_cmds =
+ MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
+
+ max_cmd = instance->max_fw_cmds;
+
+ fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
+
+ fusion->request_alloc_sz =
+ sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
+ fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
+ *(fusion->reply_q_depth);
+ fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
+ (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
+ (max_cmd + 1)); /* Extra 1 for SMID 0 */
+
+ fusion->max_sge_in_main_msg =
+ (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
+ offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
+
+ fusion->max_sge_in_chain =
+ MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
+
+ instance->max_num_sge = 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;
+
+ /*
+ * Allocate memory for descriptors
+ * Create a pool of commands
+ */
+ if (megasas_alloc_cmds(instance))
+ goto fail_alloc_mfi_cmds;
+ if (megasas_alloc_cmds_fusion(instance))
+ goto fail_alloc_cmds;
+
+ if (megasas_ioc_init_fusion(instance))
+ goto fail_ioc_init;
+
+ megasas_display_intel_branding(instance);
+ if (megasas_get_ctrl_info(instance)) {
+ dev_err(&instance->pdev->dev,
+ "Could not get controller info. Fail from %s %d\n",
+ __func__, __LINE__);
+ goto fail_ioc_init;
+ }
+
+ instance->flag_ieee = 1;
+ fusion->fast_path_io = 0;
+
+ fusion->drv_map_pages = get_order(fusion->drv_map_sz);
+ for (i = 0; i < 2; i++) {
+ fusion->ld_map[i] = NULL;
+ fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL,
+ fusion->drv_map_pages);
+ if (!fusion->ld_drv_map[i]) {
+ dev_err(&instance->pdev->dev, "Could not allocate "
+ "memory for local map info for %d pages\n",
+ fusion->drv_map_pages);
+ if (i == 1)
+ free_pages((ulong)fusion->ld_drv_map[0],
+ fusion->drv_map_pages);
+ goto fail_ioc_init;
+ }
+ memset(fusion->ld_drv_map[i], 0,
+ ((1 << PAGE_SHIFT) << fusion->drv_map_pages));
+ }
+
+ for (i = 0; i < 2; i++) {
+ fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
+ fusion->max_map_sz,
+ &fusion->ld_map_phys[i],
+ GFP_KERNEL);
+ if (!fusion->ld_map[i]) {
+ printk(KERN_ERR "megasas: Could not allocate memory "
+ "for map info\n");
+ goto fail_map_info;
+ }
+ }
+
+ if (!megasas_get_map_info(instance))
+ megasas_sync_map_info(instance);
+
+ return 0;
+
+fail_map_info:
+ if (i == 1)
+ dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
+ fusion->ld_map[0], fusion->ld_map_phys[0]);
+fail_ioc_init:
+ megasas_free_cmds_fusion(instance);
+fail_alloc_cmds:
+ megasas_free_cmds(instance);
+fail_alloc_mfi_cmds:
+ return 1;
+}
+
+/**
+ * megasas_fire_cmd_fusion - Sends command to the FW
+ * @frame_phys_addr : Physical address of cmd
+ * @frame_count : Number of frames for the command
+ * @regs : MFI register set
+ */
+void
+megasas_fire_cmd_fusion(struct megasas_instance *instance,
+ dma_addr_t req_desc_lo,
+ u32 req_desc_hi,
+ struct megasas_register_set __iomem *regs)
+{
+#if defined(writeq) && defined(CONFIG_64BIT)
+ u64 req_data = (((u64)le32_to_cpu(req_desc_hi) << 32) |
+ le32_to_cpu(req_desc_lo));
+
+ writeq(req_data, &(regs)->inbound_low_queue_port);
+#else
+ unsigned long flags;
+
+ spin_lock_irqsave(&instance->hba_lock, flags);
+
+ writel(le32_to_cpu(req_desc_lo), &(regs)->inbound_low_queue_port);
+ writel(le32_to_cpu(req_desc_hi), &(regs)->inbound_high_queue_port);
+ spin_unlock_irqrestore(&instance->hba_lock, flags);
+#endif
+}
+
+/**
+ * map_cmd_status - Maps FW cmd status to OS cmd status
+ * @cmd : Pointer to cmd
+ * @status : status of cmd returned by FW
+ * @ext_status : ext status of cmd returned by FW
+ */
+
+void
+map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
+{
+
+ switch (status) {
+
+ case MFI_STAT_OK:
+ cmd->scmd->result = DID_OK << 16;
+ break;
+
+ case MFI_STAT_SCSI_IO_FAILED:
+ case MFI_STAT_LD_INIT_IN_PROGRESS:
+ cmd->scmd->result = (DID_ERROR << 16) | ext_status;
+ break;
+
+ case MFI_STAT_SCSI_DONE_WITH_ERROR:
+
+ cmd->scmd->result = (DID_OK << 16) | ext_status;
+ if (ext_status == SAM_STAT_CHECK_CONDITION) {
+ memset(cmd->scmd->sense_buffer, 0,
+ SCSI_SENSE_BUFFERSIZE);
+ memcpy(cmd->scmd->sense_buffer, cmd->sense,
+ SCSI_SENSE_BUFFERSIZE);
+ cmd->scmd->result |= DRIVER_SENSE << 24;
+ }
+ break;
+
+ case MFI_STAT_LD_OFFLINE:
+ case MFI_STAT_DEVICE_NOT_FOUND:
+ cmd->scmd->result = DID_BAD_TARGET << 16;
+ break;
+ case MFI_STAT_CONFIG_SEQ_MISMATCH:
+ cmd->scmd->result = DID_IMM_RETRY << 16;
+ break;
+ default:
+ printk(KERN_DEBUG "megasas: FW status %#x\n", status);
+ cmd->scmd->result = DID_ERROR << 16;
+ break;
+ }
+}
+
+/**
+ * megasas_make_sgl_fusion - Prepares 32-bit SGL
+ * @instance: Adapter soft state
+ * @scp: SCSI command from the mid-layer
+ * @sgl_ptr: SGL to be filled in
+ * @cmd: cmd we are working on
+ *
+ * If successful, this function returns the number of SG elements.
+ */
+static int
+megasas_make_sgl_fusion(struct megasas_instance *instance,
+ struct scsi_cmnd *scp,
+ struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
+ struct megasas_cmd_fusion *cmd)
+{
+ int i, sg_processed, sge_count;
+ struct scatterlist *os_sgl;
+ struct fusion_context *fusion;
+
+ fusion = instance->ctrl_context;
+
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
+ struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
+ sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
+ sgl_ptr_end->Flags = 0;
+ }
+
+ sge_count = scsi_dma_map(scp);
+
+ BUG_ON(sge_count < 0);
+
+ if (sge_count > instance->max_num_sge || !sge_count)
+ return sge_count;
+
+ scsi_for_each_sg(scp, os_sgl, sge_count, i) {
+ sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
+ sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
+ sgl_ptr->Flags = 0;
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
+ if (i == sge_count - 1)
+ sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
+ }
+ sgl_ptr++;
+
+ sg_processed = i + 1;
+
+ if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
+ (sge_count > fusion->max_sge_in_main_msg)) {
+
+ struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
+ if ((instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_FURY)) {
+ if ((le16_to_cpu(cmd->io_request->IoFlags) &
+ MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
+ MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
+ cmd->io_request->ChainOffset =
+ fusion->
+ chain_offset_io_request;
+ else
+ cmd->io_request->ChainOffset = 0;
+ } else
+ cmd->io_request->ChainOffset =
+ fusion->chain_offset_io_request;
+
+ sg_chain = sgl_ptr;
+ /* Prepare chain element */
+ sg_chain->NextChainOffset = 0;
+ if ((instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_FURY))
+ sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
+ else
+ sg_chain->Flags =
+ (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
+ MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
+ sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
+ sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
+
+ sgl_ptr =
+ (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
+ memset(sgl_ptr, 0, MEGASAS_MAX_SZ_CHAIN_FRAME);
+ }
+ }
+
+ return sge_count;
+}
+
+/**
+ * megasas_set_pd_lba - Sets PD LBA
+ * @cdb: CDB
+ * @cdb_len: cdb length
+ * @start_blk: Start block of IO
+ *
+ * Used to set the PD LBA in CDB for FP IOs
+ */
+void
+megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
+ struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
+ struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
+{
+ struct MR_LD_RAID *raid;
+ u32 ld;
+ u64 start_blk = io_info->pdBlock;
+ u8 *cdb = io_request->CDB.CDB32;
+ u32 num_blocks = io_info->numBlocks;
+ u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
+
+ /* Check if T10 PI (DIF) is enabled for this LD */
+ ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
+ raid = MR_LdRaidGet(ld, local_map_ptr);
+ if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
+ memset(cdb, 0, sizeof(io_request->CDB.CDB32));
+ cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
+ cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
+
+ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
+ cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
+ else
+ cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
+ cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
+
+ /* LBA */
+ cdb[12] = (u8)((start_blk >> 56) & 0xff);
+ cdb[13] = (u8)((start_blk >> 48) & 0xff);
+ cdb[14] = (u8)((start_blk >> 40) & 0xff);
+ cdb[15] = (u8)((start_blk >> 32) & 0xff);
+ cdb[16] = (u8)((start_blk >> 24) & 0xff);
+ cdb[17] = (u8)((start_blk >> 16) & 0xff);
+ cdb[18] = (u8)((start_blk >> 8) & 0xff);
+ cdb[19] = (u8)(start_blk & 0xff);
+
+ /* Logical block reference tag */
+ io_request->CDB.EEDP32.PrimaryReferenceTag =
+ cpu_to_be32(ref_tag);
+ io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
+ io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
+
+ /* Transfer length */
+ cdb[28] = (u8)((num_blocks >> 24) & 0xff);
+ cdb[29] = (u8)((num_blocks >> 16) & 0xff);
+ cdb[30] = (u8)((num_blocks >> 8) & 0xff);
+ cdb[31] = (u8)(num_blocks & 0xff);
+
+ /* set SCSI IO EEDPFlags */
+ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
+ io_request->EEDPFlags = cpu_to_le16(
+ MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
+ } else {
+ io_request->EEDPFlags = cpu_to_le16(
+ MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
+ MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
+ }
+ io_request->Control |= cpu_to_le32((0x4 << 26));
+ io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
+ } else {
+ /* Some drives don't support 16/12 byte CDB's, convert to 10 */
+ if (((cdb_len == 12) || (cdb_len == 16)) &&
+ (start_blk <= 0xffffffff)) {
+ if (cdb_len == 16) {
+ opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
+ flagvals = cdb[1];
+ groupnum = cdb[14];
+ control = cdb[15];
+ } else {
+ opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
+ flagvals = cdb[1];
+ groupnum = cdb[10];
+ control = cdb[11];
+ }
+
+ memset(cdb, 0, sizeof(io_request->CDB.CDB32));
+
+ cdb[0] = opcode;
+ cdb[1] = flagvals;
+ cdb[6] = groupnum;
+ cdb[9] = control;
+
+ /* Transfer length */
+ cdb[8] = (u8)(num_blocks & 0xff);
+ cdb[7] = (u8)((num_blocks >> 8) & 0xff);
+
+ io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
+ cdb_len = 10;
+ } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
+ /* Convert to 16 byte CDB for large LBA's */
+ switch (cdb_len) {
+ case 6:
+ opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
+ control = cdb[5];
+ break;
+ case 10:
+ opcode =
+ cdb[0] == READ_10 ? READ_16 : WRITE_16;
+ flagvals = cdb[1];
+ groupnum = cdb[6];
+ control = cdb[9];
+ break;
+ case 12:
+ opcode =
+ cdb[0] == READ_12 ? READ_16 : WRITE_16;
+ flagvals = cdb[1];
+ groupnum = cdb[10];
+ control = cdb[11];
+ break;
+ }
+
+ memset(cdb, 0, sizeof(io_request->CDB.CDB32));
+
+ cdb[0] = opcode;
+ cdb[1] = flagvals;
+ cdb[14] = groupnum;
+ cdb[15] = control;
+
+ /* Transfer length */
+ cdb[13] = (u8)(num_blocks & 0xff);
+ cdb[12] = (u8)((num_blocks >> 8) & 0xff);
+ cdb[11] = (u8)((num_blocks >> 16) & 0xff);
+ cdb[10] = (u8)((num_blocks >> 24) & 0xff);
+
+ io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
+ cdb_len = 16;
+ }
+
+ /* Normal case, just load LBA here */
+ switch (cdb_len) {
+ case 6:
+ {
+ u8 val = cdb[1] & 0xE0;
+ cdb[3] = (u8)(start_blk & 0xff);
+ cdb[2] = (u8)((start_blk >> 8) & 0xff);
+ cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
+ break;
+ }
+ case 10:
+ cdb[5] = (u8)(start_blk & 0xff);
+ cdb[4] = (u8)((start_blk >> 8) & 0xff);
+ cdb[3] = (u8)((start_blk >> 16) & 0xff);
+ cdb[2] = (u8)((start_blk >> 24) & 0xff);
+ break;
+ case 12:
+ cdb[5] = (u8)(start_blk & 0xff);
+ cdb[4] = (u8)((start_blk >> 8) & 0xff);
+ cdb[3] = (u8)((start_blk >> 16) & 0xff);
+ cdb[2] = (u8)((start_blk >> 24) & 0xff);
+ break;
+ case 16:
+ cdb[9] = (u8)(start_blk & 0xff);
+ cdb[8] = (u8)((start_blk >> 8) & 0xff);
+ cdb[7] = (u8)((start_blk >> 16) & 0xff);
+ cdb[6] = (u8)((start_blk >> 24) & 0xff);
+ cdb[5] = (u8)((start_blk >> 32) & 0xff);
+ cdb[4] = (u8)((start_blk >> 40) & 0xff);
+ cdb[3] = (u8)((start_blk >> 48) & 0xff);
+ cdb[2] = (u8)((start_blk >> 56) & 0xff);
+ break;
+ }
+ }
+}
+
+/**
+ * megasas_build_ldio_fusion - Prepares IOs to devices
+ * @instance: Adapter soft state
+ * @scp: SCSI command
+ * @cmd: Command to be prepared
+ *
+ * Prepares the io_request and chain elements (sg_frame) for IO
+ * The IO can be for PD (Fast Path) or LD
+ */
+void
+megasas_build_ldio_fusion(struct megasas_instance *instance,
+ struct scsi_cmnd *scp,
+ struct megasas_cmd_fusion *cmd)
+{
+ u8 fp_possible;
+ u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
+ struct IO_REQUEST_INFO io_info;
+ struct fusion_context *fusion;
+ struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
+ u8 *raidLUN;
+
+ device_id = MEGASAS_DEV_INDEX(instance, scp);
+
+ fusion = instance->ctrl_context;
+
+ io_request = cmd->io_request;
+ io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
+ io_request->RaidContext.status = 0;
+ io_request->RaidContext.exStatus = 0;
+
+ req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
+
+ start_lba_lo = 0;
+ start_lba_hi = 0;
+ fp_possible = 0;
+
+ /*
+ * 6-byte READ(0x08) or WRITE(0x0A) cdb
+ */
+ if (scp->cmd_len == 6) {
+ datalength = (u32) scp->cmnd[4];
+ start_lba_lo = ((u32) scp->cmnd[1] << 16) |
+ ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
+
+ start_lba_lo &= 0x1FFFFF;
+ }
+
+ /*
+ * 10-byte READ(0x28) or WRITE(0x2A) cdb
+ */
+ else if (scp->cmd_len == 10) {
+ datalength = (u32) scp->cmnd[8] |
+ ((u32) scp->cmnd[7] << 8);
+ start_lba_lo = ((u32) scp->cmnd[2] << 24) |
+ ((u32) scp->cmnd[3] << 16) |
+ ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
+ }
+
+ /*
+ * 12-byte READ(0xA8) or WRITE(0xAA) cdb
+ */
+ else if (scp->cmd_len == 12) {
+ datalength = ((u32) scp->cmnd[6] << 24) |
+ ((u32) scp->cmnd[7] << 16) |
+ ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
+ start_lba_lo = ((u32) scp->cmnd[2] << 24) |
+ ((u32) scp->cmnd[3] << 16) |
+ ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
+ }
+
+ /*
+ * 16-byte READ(0x88) or WRITE(0x8A) cdb
+ */
+ else if (scp->cmd_len == 16) {
+ datalength = ((u32) scp->cmnd[10] << 24) |
+ ((u32) scp->cmnd[11] << 16) |
+ ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
+ start_lba_lo = ((u32) scp->cmnd[6] << 24) |
+ ((u32) scp->cmnd[7] << 16) |
+ ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
+
+ start_lba_hi = ((u32) scp->cmnd[2] << 24) |
+ ((u32) scp->cmnd[3] << 16) |
+ ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
+ }
+
+ memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
+ io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
+ io_info.numBlocks = datalength;
+ io_info.ldTgtId = device_id;
+ io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
+
+ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
+ io_info.isRead = 1;
+
+ local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
+
+ if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
+ instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
+ io_request->RaidContext.regLockFlags = 0;
+ fp_possible = 0;
+ } else {
+ if (MR_BuildRaidContext(instance, &io_info,
+ &io_request->RaidContext,
+ local_map_ptr, &raidLUN))
+ fp_possible = io_info.fpOkForIo;
+ }
+
+ /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
+ id by default, not CPU group id, otherwise all MSI-X queues won't
+ be utilized */
+ cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
+ raw_smp_processor_id() % instance->msix_vectors : 0;
+
+ if (fp_possible) {
+ megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
+ local_map_ptr, start_lba_lo);
+ io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
+ << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
+ if (io_request->RaidContext.regLockFlags ==
+ REGION_TYPE_UNUSED)
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ io_request->RaidContext.Type = MPI2_TYPE_CUDA;
+ io_request->RaidContext.nseg = 0x1;
+ io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
+ io_request->RaidContext.regLockFlags |=
+ (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
+ MR_RL_FLAGS_SEQ_NUM_ENABLE);
+ }
+ if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
+ (io_info.isRead)) {
+ io_info.devHandle =
+ get_updated_dev_handle(instance,
+ &fusion->load_balance_info[device_id],
+ &io_info);
+ scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
+ cmd->pd_r1_lb = io_info.pd_after_lb;
+ } else
+ scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
+ cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
+ io_request->DevHandle = io_info.devHandle;
+ /* populate the LUN field */
+ memcpy(io_request->LUN, raidLUN, 8);
+ } else {
+ io_request->RaidContext.timeoutValue =
+ cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
+ << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
+ if (io_request->RaidContext.regLockFlags ==
+ REGION_TYPE_UNUSED)
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ io_request->RaidContext.Type = MPI2_TYPE_CUDA;
+ io_request->RaidContext.regLockFlags |=
+ (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
+ MR_RL_FLAGS_SEQ_NUM_ENABLE);
+ io_request->RaidContext.nseg = 0x1;
+ }
+ io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
+ io_request->DevHandle = cpu_to_le16(device_id);
+ } /* Not FP */
+}
+
+/**
+ * megasas_build_dcdb_fusion - Prepares IOs to devices
+ * @instance: Adapter soft state
+ * @scp: SCSI command
+ * @cmd: Command to be prepared
+ *
+ * Prepares the io_request frame for non-io cmds
+ */
+static void
+megasas_build_dcdb_fusion(struct megasas_instance *instance,
+ struct scsi_cmnd *scmd,
+ struct megasas_cmd_fusion *cmd)
+{
+ u32 device_id;
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
+ u16 pd_index = 0;
+ u16 os_timeout_value;
+ u16 timeout_limit;
+ struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
+ struct fusion_context *fusion = instance->ctrl_context;
+ u8 span, physArm;
+ u16 devHandle;
+ u32 ld, arRef, pd;
+ struct MR_LD_RAID *raid;
+ struct RAID_CONTEXT *pRAID_Context;
+
+ io_request = cmd->io_request;
+ device_id = MEGASAS_DEV_INDEX(instance, scmd);
+ pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
+ +scmd->device->id;
+ local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
+
+ io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
+
+ if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS &&
+ instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
+ if (fusion->fast_path_io)
+ io_request->DevHandle =
+ local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
+ io_request->RaidContext.RAIDFlags =
+ MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
+ << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
+ cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
+ cmd->request_desc->SCSIIO.MSIxIndex =
+ instance->msix_vectors ?
+ raw_smp_processor_id() %
+ instance->msix_vectors :
+ 0;
+ os_timeout_value = scmd->request->timeout / HZ;
+
+ if (instance->secure_jbod_support &&
+ (megasas_cmd_type(scmd) == NON_READ_WRITE_SYSPDIO)) {
+ /* 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);
+ io_request->RaidContext.timeoutValue =
+ cpu_to_le16(os_timeout_value);
+ } else {
+ /* system pd Fast Path */
+ io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
+ io_request->RaidContext.regLockFlags = 0;
+ io_request->RaidContext.regLockRowLBA = 0;
+ io_request->RaidContext.regLockLength = 0;
+ timeout_limit = (scmd->device->type == TYPE_DISK) ?
+ 255 : 0xFFFF;
+ io_request->RaidContext.timeoutValue =
+ cpu_to_le16((os_timeout_value > timeout_limit) ?
+ timeout_limit : os_timeout_value);
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
+ io_request->IoFlags |=
+ cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
+
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ }
+ } else {
+ if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS)
+ goto NonFastPath;
+
+ /*
+ * For older firmware, Driver should not access ldTgtIdToLd
+ * beyond index 127 and for Extended VD firmware, ldTgtIdToLd
+ * should not go beyond 255.
+ */
+
+ if ((!fusion->fast_path_io) ||
+ (device_id >= instance->fw_supported_vd_count))
+ goto NonFastPath;
+
+ ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
+
+ if (ld >= instance->fw_supported_vd_count)
+ goto NonFastPath;
+
+ raid = MR_LdRaidGet(ld, local_map_ptr);
+
+ /* check if this LD is FP capable */
+ if (!(raid->capability.fpNonRWCapable))
+ /* not FP capable, send as non-FP */
+ goto NonFastPath;
+
+ /* get RAID_Context pointer */
+ pRAID_Context = &io_request->RaidContext;
+
+ /* set RAID context values */
+ pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
+ pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd);
+ pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
+ pRAID_Context->regLockRowLBA = 0;
+ pRAID_Context->regLockLength = 0;
+ pRAID_Context->configSeqNum = raid->seqNum;
+
+ /* get the DevHandle for the PD (since this is
+ fpNonRWCapable, this is a single disk RAID0) */
+ span = physArm = 0;
+ arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
+ pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
+ devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
+
+ /* build request descriptor */
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ cmd->request_desc->SCSIIO.DevHandle = devHandle;
+
+ /* populate the LUN field */
+ memcpy(io_request->LUN, raid->LUN, 8);
+
+ /* build the raidScsiIO structure */
+ io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
+ io_request->DevHandle = devHandle;
+
+ return;
+
+NonFastPath:
+ io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
+ io_request->DevHandle = cpu_to_le16(device_id);
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ }
+ io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
+ int_to_scsilun(scmd->device->lun, (struct scsi_lun *)io_request->LUN);
+}
+
+/**
+ * megasas_build_io_fusion - Prepares IOs to devices
+ * @instance: Adapter soft state
+ * @scp: SCSI command
+ * @cmd: Command to be prepared
+ *
+ * Invokes helper functions to prepare request frames
+ * and sets flags appropriate for IO/Non-IO cmd
+ */
+int
+megasas_build_io_fusion(struct megasas_instance *instance,
+ struct scsi_cmnd *scp,
+ struct megasas_cmd_fusion *cmd)
+{
+ u32 device_id, sge_count;
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
+
+ device_id = MEGASAS_DEV_INDEX(instance, scp);
+
+ /* Zero out some fields so they don't get reused */
+ memset(io_request->LUN, 0x0, 8);
+ io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
+ io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
+ io_request->EEDPFlags = 0;
+ io_request->Control = 0;
+ io_request->EEDPBlockSize = 0;
+ io_request->ChainOffset = 0;
+ io_request->RaidContext.RAIDFlags = 0;
+ io_request->RaidContext.Type = 0;
+ io_request->RaidContext.nseg = 0;
+
+ memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
+ /*
+ * Just the CDB length,rest of the Flags are zero
+ * This will be modified for FP in build_ldio_fusion
+ */
+ io_request->IoFlags = cpu_to_le16(scp->cmd_len);
+
+ if (megasas_cmd_type(scp) == READ_WRITE_LDIO)
+ megasas_build_ldio_fusion(instance, scp, cmd);
+ else
+ megasas_build_dcdb_fusion(instance, scp, cmd);
+
+ /*
+ * Construct SGL
+ */
+
+ sge_count =
+ megasas_make_sgl_fusion(instance, scp,
+ (struct MPI25_IEEE_SGE_CHAIN64 *)
+ &io_request->SGL, cmd);
+
+ if (sge_count > instance->max_num_sge) {
+ printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
+ "max (0x%x) allowed\n", sge_count,
+ instance->max_num_sge);
+ return 1;
+ }
+
+ io_request->RaidContext.numSGE = sge_count;
+
+ io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
+
+ if (scp->sc_data_direction == PCI_DMA_TODEVICE)
+ io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
+ else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
+ io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
+
+ io_request->SGLOffset0 =
+ offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
+
+ io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
+ io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
+
+ cmd->scmd = scp;
+ scp->SCp.ptr = (char *)cmd;
+
+ return 0;
+}
+
+union MEGASAS_REQUEST_DESCRIPTOR_UNION *
+megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
+{
+ u8 *p;
+ struct fusion_context *fusion;
+
+ if (index >= instance->max_fw_cmds) {
+ printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
+ "descriptor for scsi%d\n", index,
+ instance->host->host_no);
+ return NULL;
+ }
+ fusion = instance->ctrl_context;
+ p = fusion->req_frames_desc
+ +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
+
+ return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
+}
+
+/**
+ * megasas_build_and_issue_cmd_fusion -Main routine for building and
+ * issuing non IOCTL cmd
+ * @instance: Adapter soft state
+ * @scmd: pointer to scsi cmd from OS
+ */
+static u32
+megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
+ struct scsi_cmnd *scmd)
+{
+ struct megasas_cmd_fusion *cmd;
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
+ u32 index;
+ struct fusion_context *fusion;
+
+ fusion = instance->ctrl_context;
+
+ cmd = megasas_get_cmd_fusion(instance);
+ if (!cmd)
+ return SCSI_MLQUEUE_HOST_BUSY;
+
+ index = cmd->index;
+
+ req_desc = megasas_get_request_descriptor(instance, index-1);
+ if (!req_desc)
+ return 1;
+
+ req_desc->Words = 0;
+ cmd->request_desc = req_desc;
+
+ if (megasas_build_io_fusion(instance, scmd, cmd)) {
+ megasas_return_cmd_fusion(instance, cmd);
+ printk(KERN_ERR "megasas: Error building command.\n");
+ cmd->request_desc = NULL;
+ return 1;
+ }
+
+ req_desc = cmd->request_desc;
+ req_desc->SCSIIO.SMID = cpu_to_le16(index);
+
+ if (cmd->io_request->ChainOffset != 0 &&
+ cmd->io_request->ChainOffset != 0xF)
+ printk(KERN_ERR "megasas: The chain offset value is not "
+ "correct : %x\n", cmd->io_request->ChainOffset);
+
+ /*
+ * Issue the command to the FW
+ */
+ atomic_inc(&instance->fw_outstanding);
+
+ instance->instancet->fire_cmd(instance,
+ req_desc->u.low, req_desc->u.high,
+ instance->reg_set);
+
+ return 0;
+}
+
+/**
+ * complete_cmd_fusion - Completes command
+ * @instance: Adapter soft state
+ * Completes all commands that is in reply descriptor queue
+ */
+int
+complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
+{
+ union MPI2_REPLY_DESCRIPTORS_UNION *desc;
+ struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
+ struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
+ struct fusion_context *fusion;
+ struct megasas_cmd *cmd_mfi;
+ struct megasas_cmd_fusion *cmd_fusion;
+ u16 smid, num_completed;
+ u8 reply_descript_type;
+ u32 status, extStatus, device_id;
+ union desc_value d_val;
+ struct LD_LOAD_BALANCE_INFO *lbinfo;
+ int threshold_reply_count = 0;
+
+ fusion = instance->ctrl_context;
+
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
+ return IRQ_HANDLED;
+
+ desc = fusion->reply_frames_desc;
+ desc += ((MSIxIndex * fusion->reply_alloc_sz)/
+ sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
+ fusion->last_reply_idx[MSIxIndex];
+
+ reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
+
+ d_val.word = desc->Words;
+
+ reply_descript_type = reply_desc->ReplyFlags &
+ MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
+
+ if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
+ return IRQ_NONE;
+
+ num_completed = 0;
+
+ while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
+ smid = le16_to_cpu(reply_desc->SMID);
+
+ cmd_fusion = fusion->cmd_list[smid - 1];
+
+ scsi_io_req =
+ (struct MPI2_RAID_SCSI_IO_REQUEST *)
+ cmd_fusion->io_request;
+
+ if (cmd_fusion->scmd)
+ cmd_fusion->scmd->SCp.ptr = NULL;
+
+ status = scsi_io_req->RaidContext.status;
+ extStatus = scsi_io_req->RaidContext.exStatus;
+
+ switch (scsi_io_req->Function) {
+ case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
+ /* Update load balancing info */
+ device_id = MEGASAS_DEV_INDEX(instance,
+ cmd_fusion->scmd);
+ lbinfo = &fusion->load_balance_info[device_id];
+ if (cmd_fusion->scmd->SCp.Status &
+ MEGASAS_LOAD_BALANCE_FLAG) {
+ atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
+ cmd_fusion->scmd->SCp.Status &=
+ ~MEGASAS_LOAD_BALANCE_FLAG;
+ }
+ if (reply_descript_type ==
+ MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
+ if (megasas_dbg_lvl == 5)
+ printk(KERN_ERR "\nmegasas: FAST Path "
+ "IO Success\n");
+ }
+ /* Fall thru and complete IO */
+ case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
+ /* Map the FW Cmd Status */
+ map_cmd_status(cmd_fusion, status, extStatus);
+ scsi_dma_unmap(cmd_fusion->scmd);
+ cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
+ scsi_io_req->RaidContext.status = 0;
+ scsi_io_req->RaidContext.exStatus = 0;
+ megasas_return_cmd_fusion(instance, cmd_fusion);
+ atomic_dec(&instance->fw_outstanding);
+
+ break;
+ case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
+ cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
+
+ if (!cmd_mfi->mpt_pthr_cmd_blocked) {
+ if (megasas_dbg_lvl == 5)
+ dev_info(&instance->pdev->dev,
+ "freeing mfi/mpt pass-through "
+ "from %s %d\n",
+ __func__, __LINE__);
+ megasas_return_mfi_mpt_pthr(instance, cmd_mfi,
+ cmd_fusion);
+ }
+
+ megasas_complete_cmd(instance, cmd_mfi, DID_OK);
+ cmd_fusion->flags = 0;
+ break;
+ }
+
+ fusion->last_reply_idx[MSIxIndex]++;
+ if (fusion->last_reply_idx[MSIxIndex] >=
+ fusion->reply_q_depth)
+ fusion->last_reply_idx[MSIxIndex] = 0;
+
+ desc->Words = ULLONG_MAX;
+ num_completed++;
+ threshold_reply_count++;
+
+ /* Get the next reply descriptor */
+ if (!fusion->last_reply_idx[MSIxIndex])
+ desc = fusion->reply_frames_desc +
+ ((MSIxIndex * fusion->reply_alloc_sz)/
+ sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
+ else
+ desc++;
+
+ reply_desc =
+ (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
+
+ d_val.word = desc->Words;
+
+ reply_descript_type = reply_desc->ReplyFlags &
+ MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
+
+ if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
+ break;
+ /*
+ * 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->pdev->device ==
+ PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_FURY))
+ writel(((MSIxIndex & 0x7) << 24) |
+ fusion->last_reply_idx[MSIxIndex],
+ instance->reply_post_host_index_addr[MSIxIndex/8]);
+ else
+ writel((MSIxIndex << 24) |
+ fusion->last_reply_idx[MSIxIndex],
+ instance->reply_post_host_index_addr[0]);
+ threshold_reply_count = 0;
+ }
+ }
+
+ if (!num_completed)
+ return IRQ_NONE;
+
+ wmb();
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
+ writel(((MSIxIndex & 0x7) << 24) |
+ fusion->last_reply_idx[MSIxIndex],
+ instance->reply_post_host_index_addr[MSIxIndex/8]);
+ else
+ writel((MSIxIndex << 24) |
+ fusion->last_reply_idx[MSIxIndex],
+ instance->reply_post_host_index_addr[0]);
+ megasas_check_and_restore_queue_depth(instance);
+ return IRQ_HANDLED;
+}
+
+/**
+ * megasas_complete_cmd_dpc_fusion - Completes command
+ * @instance: Adapter soft state
+ *
+ * Tasklet to complete cmds
+ */
+void
+megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
+{
+ struct megasas_instance *instance =
+ (struct megasas_instance *)instance_addr;
+ unsigned long flags;
+ u32 count, MSIxIndex;
+
+ count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
+
+ /* If we have already declared adapter dead, donot complete cmds */
+ spin_lock_irqsave(&instance->hba_lock, flags);
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
+ spin_unlock_irqrestore(&instance->hba_lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&instance->hba_lock, flags);
+
+ for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
+ complete_cmd_fusion(instance, MSIxIndex);
+}
+
+/**
+ * megasas_isr_fusion - isr entry point
+ */
+irqreturn_t megasas_isr_fusion(int irq, void *devp)
+{
+ struct megasas_irq_context *irq_context = devp;
+ struct megasas_instance *instance = irq_context->instance;
+ u32 mfiStatus, fw_state, dma_state;
+
+ if (instance->mask_interrupts)
+ return IRQ_NONE;
+
+ if (!instance->msix_vectors) {
+ mfiStatus = instance->instancet->clear_intr(instance->reg_set);
+ if (!mfiStatus)
+ return IRQ_NONE;
+ }
+
+ /* If we are resetting, bail */
+ if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
+ instance->instancet->clear_intr(instance->reg_set);
+ return IRQ_HANDLED;
+ }
+
+ if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
+ instance->instancet->clear_intr(instance->reg_set);
+ /* If we didn't complete any commands, check for FW fault */
+ fw_state = instance->instancet->read_fw_status_reg(
+ instance->reg_set) & MFI_STATE_MASK;
+ dma_state = instance->instancet->read_fw_status_reg
+ (instance->reg_set) & MFI_STATE_DMADONE;
+ if (instance->crash_dump_drv_support &&
+ instance->crash_dump_app_support) {
+ /* Start collecting crash, if DMA bit is done */
+ if ((fw_state == MFI_STATE_FAULT) && dma_state)
+ schedule_work(&instance->crash_init);
+ else if (fw_state == MFI_STATE_FAULT)
+ schedule_work(&instance->work_init);
+ } else if (fw_state == MFI_STATE_FAULT) {
+ printk(KERN_WARNING "megaraid_sas: Iop2SysDoorbellInt"
+ "for scsi%d\n", instance->host->host_no);
+ schedule_work(&instance->work_init);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
+ * @instance: Adapter soft state
+ * mfi_cmd: megasas_cmd pointer
+ *
+ */
+u8
+build_mpt_mfi_pass_thru(struct megasas_instance *instance,
+ struct megasas_cmd *mfi_cmd)
+{
+ struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
+ struct megasas_cmd_fusion *cmd;
+ struct fusion_context *fusion;
+ struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
+ u32 opcode;
+
+ cmd = megasas_get_cmd_fusion(instance);
+ if (!cmd)
+ return 1;
+
+ /* Save the smid. To be used for returning the cmd */
+ mfi_cmd->context.smid = cmd->index;
+ cmd->sync_cmd_idx = mfi_cmd->index;
+
+ /* Set this only for Blocked commands */
+ opcode = le32_to_cpu(mfi_cmd->frame->dcmd.opcode);
+ if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
+ && (mfi_cmd->frame->dcmd.mbox.b[1] == 1))
+ mfi_cmd->is_wait_event = 1;
+
+ if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
+ mfi_cmd->is_wait_event = 1;
+
+ if (mfi_cmd->is_wait_event)
+ mfi_cmd->mpt_pthr_cmd_blocked = cmd;
+
+ /*
+ * 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))
+ cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
+
+ fusion = instance->ctrl_context;
+ io_req = cmd->io_request;
+
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
+ struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
+ (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
+ sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
+ sgl_ptr_end->Flags = 0;
+ }
+
+ mpi25_ieee_chain =
+ (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
+
+ io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
+ io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
+ SGL) / 4;
+ io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
+
+ mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
+
+ mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
+ MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
+
+ mpi25_ieee_chain->Length = cpu_to_le32(MEGASAS_MAX_SZ_CHAIN_FRAME);
+
+ return 0;
+}
+
+/**
+ * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
+ * @instance: Adapter soft state
+ * @cmd: mfi cmd to build
+ *
+ */
+union MEGASAS_REQUEST_DESCRIPTOR_UNION *
+build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
+{
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
+ u16 index;
+
+ if (build_mpt_mfi_pass_thru(instance, cmd)) {
+ printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
+ return NULL;
+ }
+
+ index = cmd->context.smid;
+
+ req_desc = megasas_get_request_descriptor(instance, index - 1);
+
+ if (!req_desc)
+ return NULL;
+
+ req_desc->Words = 0;
+ req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+
+ req_desc->SCSIIO.SMID = cpu_to_le16(index);
+
+ return req_desc;
+}
+
+/**
+ * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
+ * @instance: Adapter soft state
+ * @cmd: mfi cmd pointer
+ *
+ */
+void
+megasas_issue_dcmd_fusion(struct megasas_instance *instance,
+ struct megasas_cmd *cmd)
+{
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
+
+ req_desc = build_mpt_cmd(instance, cmd);
+ if (!req_desc) {
+ printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
+ return;
+ }
+ atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_ATTACHED);
+ instance->instancet->fire_cmd(instance, req_desc->u.low,
+ req_desc->u.high, instance->reg_set);
+}
+
+/**
+ * megasas_release_fusion - Reverses the FW initialization
+ * @intance: Adapter soft state
+ */
+void
+megasas_release_fusion(struct megasas_instance *instance)
+{
+ megasas_free_cmds(instance);
+ megasas_free_cmds_fusion(instance);
+
+ iounmap(instance->reg_set);
+
+ pci_release_selected_regions(instance->pdev, instance->bar);
+}
+
+/**
+ * megasas_read_fw_status_reg_fusion - returns the current FW status value
+ * @regs: MFI register set
+ */
+static u32
+megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
+{
+ return readl(&(regs)->outbound_scratch_pad);
+}
+
+/**
+ * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware
+ * @instance: Controller's soft instance
+ * return: Number of allocated host crash buffers
+ */
+static void
+megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
+{
+ unsigned int i;
+
+ instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
+ for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
+ instance->crash_buf[i] = (void *)__get_free_pages(GFP_KERNEL,
+ instance->crash_buf_pages);
+ if (!instance->crash_buf[i]) {
+ dev_info(&instance->pdev->dev, "Firmware crash dump "
+ "memory allocation failed at index %d\n", i);
+ break;
+ }
+ memset(instance->crash_buf[i], 0,
+ ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
+ }
+ instance->drv_buf_alloc = i;
+}
+
+/**
+ * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware
+ * @instance: Controller's soft instance
+ */
+void
+megasas_free_host_crash_buffer(struct megasas_instance *instance)
+{
+ unsigned int i
+;
+ for (i = 0; i < instance->drv_buf_alloc; i++) {
+ if (instance->crash_buf[i])
+ free_pages((ulong)instance->crash_buf[i],
+ instance->crash_buf_pages);
+ }
+ instance->drv_buf_index = 0;
+ instance->drv_buf_alloc = 0;
+ instance->fw_crash_state = UNAVAILABLE;
+ instance->fw_crash_buffer_size = 0;
+}
+
+/**
+ * megasas_adp_reset_fusion - For controller reset
+ * @regs: MFI register set
+ */
+static int
+megasas_adp_reset_fusion(struct megasas_instance *instance,
+ struct megasas_register_set __iomem *regs)
+{
+ 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 iotimeout, 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) {
+ printk(KERN_WARNING "megasas: Found FW in FAULT state,"
+ " will reset adapter scsi%d.\n",
+ instance->host->host_no);
+ retval = 1;
+ goto out;
+ }
+ /* If SR-IOV VF mode & heartbeat timeout, don't wait */
+ if (instance->requestorId && !iotimeout) {
+ retval = 1;
+ goto out;
+ }
+
+ /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
+ if (instance->requestorId && iotimeout) {
+ 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)) {
+ printk(KERN_WARNING "megasas: SR-IOV:"
+ " Heartbeat never completed "
+ " while polling during I/O "
+ " timeout handling for "
+ "scsi%d.\n",
+ instance->host->host_no);
+ *convert = 1;
+ retval = 1;
+ goto out;
+ }
+ }
+ }
+
+ outstanding = atomic_read(&instance->fw_outstanding);
+ if (!outstanding)
+ goto out;
+
+ if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
+ printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
+ "commands to complete for scsi%d\n", i,
+ outstanding, instance->host->host_no);
+ megasas_complete_cmd_dpc_fusion(
+ (unsigned long)instance);
+ }
+ msleep(1000);
+ }
+
+ if (atomic_read(&instance->fw_outstanding)) {
+ printk("megaraid_sas: pending commands remain after waiting, "
+ "will reset adapter scsi%d.\n",
+ instance->host->host_no);
+ retval = 1;
+ }
+out:
+ return retval;
+}
+
+void megasas_reset_reply_desc(struct megasas_instance *instance)
+{
+ int i, count;
+ struct fusion_context *fusion;
+ union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
+
+ fusion = instance->ctrl_context;
+ count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
+ for (i = 0 ; i < count ; i++)
+ fusion->last_reply_idx[i] = 0;
+ reply_desc = fusion->reply_frames_desc;
+ for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
+ reply_desc->Words = ULLONG_MAX;
+}
+
+/* Check for a second path that is currently UP */
+int megasas_check_mpio_paths(struct megasas_instance *instance,
+ struct scsi_cmnd *scmd)
+{
+ int i, j, retval = (DID_RESET << 16);
+
+ if (instance->mpio && instance->requestorId) {
+ for (i = 0 ; i < MAX_MGMT_ADAPTERS ; i++)
+ for (j = 0 ; j < MAX_LOGICAL_DRIVES; j++)
+ if (megasas_mgmt_info.instance[i] &&
+ (megasas_mgmt_info.instance[i] != instance) &&
+ megasas_mgmt_info.instance[i]->mpio &&
+ megasas_mgmt_info.instance[i]->requestorId
+ &&
+ (megasas_mgmt_info.instance[i]->ld_ids[j]
+ == scmd->device->id)) {
+ retval = (DID_NO_CONNECT << 16);
+ goto out;
+ }
+ }
+out:
+ return retval;
+}
+
+/* Core fusion reset function */
+int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
+{
+ int retval = SUCCESS, i, j, retry = 0, convert = 0;
+ struct megasas_instance *instance;
+ struct megasas_cmd_fusion *cmd_fusion;
+ struct fusion_context *fusion;
+ struct megasas_cmd *cmd_mfi;
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
+ u32 host_diag, abs_state, status_reg, reset_adapter;
+ u32 io_timeout_in_crash_mode = 0;
+
+ instance = (struct megasas_instance *)shost->hostdata;
+ fusion = instance->ctrl_context;
+
+ mutex_lock(&instance->reset_mutex);
+
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
+ printk(KERN_WARNING "megaraid_sas: 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 && iotimeout) {
+ dev_info(&instance->pdev->dev, "IO timeout is detected, "
+ "forcibly FAULT Firmware\n");
+ instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
+ status_reg = readl(&instance->reg_set->doorbell);
+ writel(status_reg | MFI_STATE_FORCE_OCR,
+ &instance->reg_set->doorbell);
+ readl(&instance->reg_set->doorbell);
+ mutex_unlock(&instance->reset_mutex);
+ do {
+ ssleep(3);
+ io_timeout_in_crash_mode++;
+ dev_dbg(&instance->pdev->dev, "waiting for [%d] "
+ "seconds for crash dump collection and OCR "
+ "to be done\n", (io_timeout_in_crash_mode * 3));
+ } while ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
+ (io_timeout_in_crash_mode < 80));
+
+ if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
+ dev_info(&instance->pdev->dev, "OCR done for IO "
+ "timeout case\n");
+ retval = SUCCESS;
+ } else {
+ dev_info(&instance->pdev->dev, "Controller is not "
+ "operational after 240 seconds wait for IO "
+ "timeout case in FW crash dump mode\n do "
+ "OCR/kill adapter\n");
+ retval = megasas_reset_fusion(shost, 0);
+ }
+ return retval;
+ }
+
+ if (instance->requestorId && !instance->skip_heartbeat_timer_del)
+ del_timer_sync(&instance->sriov_heartbeat_timer);
+ set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
+ instance->adprecovery = MEGASAS_ADPRESET_SM_POLLING;
+ instance->instancet->disable_intr(instance);
+ msleep(1000);
+
+ /* First try waiting for commands to complete */
+ if (megasas_wait_for_outstanding_fusion(instance, iotimeout,
+ &convert)) {
+ instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
+ printk(KERN_WARNING "megaraid_sas: resetting fusion "
+ "adapter scsi%d.\n", instance->host->host_no);
+ if (convert)
+ iotimeout = 0;
+
+ /* Now return commands back to the OS */
+ for (i = 0 ; i < instance->max_fw_cmds; i++) {
+ cmd_fusion = fusion->cmd_list[i];
+ if (cmd_fusion->scmd) {
+ scsi_dma_unmap(cmd_fusion->scmd);
+ cmd_fusion->scmd->result =
+ megasas_check_mpio_paths(instance,
+ cmd_fusion->scmd);
+ cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
+ megasas_return_cmd_fusion(instance, cmd_fusion);
+ atomic_dec(&instance->fw_outstanding);
+ }
+ }
+
+ status_reg = instance->instancet->read_fw_status_reg(
+ instance->reg_set);
+ abs_state = status_reg & MFI_STATE_MASK;
+ reset_adapter = status_reg & MFI_RESET_ADAPTER;
+ if (instance->disableOnlineCtrlReset ||
+ (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
+ /* Reset not supported, kill adapter */
+ printk(KERN_WARNING "megaraid_sas: Reset not supported"
+ ", killing adapter 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 && !iotimeout) {
+ msleep(MEGASAS_OCR_SETTLE_TIME_VF);
+ /* Look for a late HB update after VF settle time */
+ if (abs_state == MFI_STATE_OPERATIONAL &&
+ (instance->hb_host_mem->HB.fwCounter !=
+ instance->hb_host_mem->HB.driverCounter)) {
+ instance->hb_host_mem->HB.driverCounter =
+ instance->hb_host_mem->HB.fwCounter;
+ printk(KERN_WARNING "megasas: SR-IOV:"
+ "Late FW heartbeat update for "
+ "scsi%d.\n",
+ instance->host->host_no);
+ } else {
+ /* In VF mode, first poll for FW ready */
+ for (i = 0;
+ i < (MEGASAS_RESET_WAIT_TIME * 1000);
+ i += 20) {
+ status_reg =
+ instance->instancet->
+ read_fw_status_reg(
+ instance->reg_set);
+ abs_state = status_reg &
+ MFI_STATE_MASK;
+ if (abs_state == MFI_STATE_READY) {
+ printk(KERN_WARNING "megasas"
+ ": SR-IOV: FW was found"
+ "to be in ready state "
+ "for scsi%d.\n",
+ instance->host->host_no);
+ break;
+ }
+ msleep(20);
+ }
+ if (abs_state != MFI_STATE_READY) {
+ printk(KERN_WARNING "megasas: SR-IOV: "
+ "FW not in ready state after %d"
+ " seconds for scsi%d, status_reg = "
+ "0x%x.\n",
+ MEGASAS_RESET_WAIT_TIME,
+ instance->host->host_no,
+ status_reg);
+ megaraid_sas_kill_hba(instance);
+ instance->skip_heartbeat_timer_del = 1;
+ instance->adprecovery =
+ MEGASAS_HW_CRITICAL_ERROR;
+ retval = FAILED;
+ goto out;
+ }
+ }
+ }
+
+ /* Now try to reset the chip */
+ for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
+ writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
+ &instance->reg_set->fusion_seq_offset);
+ writel(MPI2_WRSEQ_1ST_KEY_VALUE,
+ &instance->reg_set->fusion_seq_offset);
+ writel(MPI2_WRSEQ_2ND_KEY_VALUE,
+ &instance->reg_set->fusion_seq_offset);
+ writel(MPI2_WRSEQ_3RD_KEY_VALUE,
+ &instance->reg_set->fusion_seq_offset);
+ writel(MPI2_WRSEQ_4TH_KEY_VALUE,
+ &instance->reg_set->fusion_seq_offset);
+ writel(MPI2_WRSEQ_5TH_KEY_VALUE,
+ &instance->reg_set->fusion_seq_offset);
+ writel(MPI2_WRSEQ_6TH_KEY_VALUE,
+ &instance->reg_set->fusion_seq_offset);
+
+ /* Check that the diag write enable (DRWE) bit is on */
+ host_diag = readl(&instance->reg_set->fusion_host_diag);
+ retry = 0;
+ while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
+ msleep(100);
+ host_diag =
+ readl(&instance->reg_set->fusion_host_diag);
+ if (retry++ == 100) {
+ printk(KERN_WARNING "megaraid_sas: "
+ "Host diag unlock failed! "
+ "for scsi%d\n",
+ instance->host->host_no);
+ break;
+ }
+ }
+ if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
+ continue;
+
+ /* Send chip reset command */
+ writel(host_diag | HOST_DIAG_RESET_ADAPTER,
+ &instance->reg_set->fusion_host_diag);
+ msleep(3000);
+
+ /* Make sure reset adapter bit is cleared */
+ host_diag = readl(&instance->reg_set->fusion_host_diag);
+ retry = 0;
+ while (host_diag & HOST_DIAG_RESET_ADAPTER) {
+ msleep(100);
+ host_diag =
+ readl(&instance->reg_set->fusion_host_diag);
+ if (retry++ == 1000) {
+ printk(KERN_WARNING "megaraid_sas: "
+ "Diag reset adapter never "
+ "cleared for scsi%d!\n",
+ instance->host->host_no);
+ break;
+ }
+ }
+ if (host_diag & HOST_DIAG_RESET_ADAPTER)
+ continue;
+
+ abs_state =
+ instance->instancet->read_fw_status_reg(
+ instance->reg_set) & MFI_STATE_MASK;
+ retry = 0;
+
+ while ((abs_state <= MFI_STATE_FW_INIT) &&
+ (retry++ < 1000)) {
+ msleep(100);
+ abs_state =
+ instance->instancet->read_fw_status_reg(
+ instance->reg_set) & MFI_STATE_MASK;
+ }
+ if (abs_state <= MFI_STATE_FW_INIT) {
+ printk(KERN_WARNING "megaraid_sas: firmware "
+ "state < MFI_STATE_FW_INIT, state = "
+ "0x%x for scsi%d\n", abs_state,
+ instance->host->host_no);
+ continue;
+ }
+
+ /* Wait for FW to become ready */
+ if (megasas_transition_to_ready(instance, 1)) {
+ printk(KERN_WARNING "megaraid_sas: Failed to "
+ "transition controller to ready "
+ "for scsi%d.\n",
+ instance->host->host_no);
+ continue;
+ }
+
+ megasas_reset_reply_desc(instance);
+ if (megasas_ioc_init_fusion(instance)) {
+ printk(KERN_WARNING "megaraid_sas: "
+ "megasas_ioc_init_fusion() failed!"
+ " for scsi%d\n",
+ instance->host->host_no);
+ continue;
+ }
+
+ /* Re-fire management commands */
+ for (j = 0 ; j < instance->max_fw_cmds; j++) {
+ cmd_fusion = fusion->cmd_list[j];
+ if (cmd_fusion->sync_cmd_idx !=
+ (u32)ULONG_MAX) {
+ cmd_mfi =
+ instance->
+ cmd_list[cmd_fusion->sync_cmd_idx];
+ if (cmd_mfi->frame->dcmd.opcode ==
+ cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) {
+ megasas_return_mfi_mpt_pthr(instance, cmd_mfi, cmd_fusion);
+ } else {
+ req_desc =
+ megasas_get_request_descriptor(
+ instance,
+ cmd_mfi->context.smid
+ -1);
+ if (!req_desc) {
+ printk(KERN_WARNING
+ "req_desc NULL"
+ " for scsi%d\n",
+ instance->host->host_no);
+ /* Return leaked MPT
+ frame */
+ megasas_return_cmd_fusion(instance, cmd_fusion);
+ } else {
+ instance->instancet->
+ fire_cmd(instance,
+ req_desc->
+ u.low,
+ req_desc->
+ u.high,
+ instance->
+ reg_set);
+ }
+ }
+ }
+ }
+
+ if (megasas_get_ctrl_info(instance)) {
+ dev_info(&instance->pdev->dev,
+ "Failed from %s %d\n",
+ __func__, __LINE__);
+ megaraid_sas_kill_hba(instance);
+ retval = FAILED;
+ }
+ /* Reset load balance info */
+ memset(fusion->load_balance_info, 0,
+ sizeof(struct LD_LOAD_BALANCE_INFO)
+ *MAX_LOGICAL_DRIVES_EXT);
+
+ if (!megasas_get_map_info(instance))
+ megasas_sync_map_info(instance);
+
+ clear_bit(MEGASAS_FUSION_IN_RESET,
+ &instance->reset_flags);
+ instance->instancet->enable_intr(instance);
+ instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
+
+ /* Restart SR-IOV heartbeat */
+ if (instance->requestorId) {
+ if (!megasas_sriov_start_heartbeat(instance, 0))
+ megasas_start_timer(instance,
+ &instance->sriov_heartbeat_timer,
+ megasas_sriov_heartbeat_handler,
+ MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
+ else
+ instance->skip_heartbeat_timer_del = 1;
+ }
+
+ /* Adapter reset completed successfully */
+ printk(KERN_WARNING "megaraid_sas: Reset "
+ "successful for scsi%d.\n",
+ instance->host->host_no);
+
+ if (instance->crash_dump_drv_support &&
+ instance->crash_dump_app_support)
+ megasas_set_crash_dump_params(instance,
+ MR_CRASH_BUF_TURN_ON);
+ else
+ megasas_set_crash_dump_params(instance,
+ MR_CRASH_BUF_TURN_OFF);
+
+ retval = SUCCESS;
+ goto out;
+ }
+ /* Reset failed, kill the adapter */
+ printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
+ "adapter scsi%d.\n", instance->host->host_no);
+ megaraid_sas_kill_hba(instance);
+ instance->skip_heartbeat_timer_del = 1;
+ retval = FAILED;
+ } else {
+ /* For VF: Restart HB timer if we didn't OCR */
+ if (instance->requestorId) {
+ megasas_start_timer(instance,
+ &instance->sriov_heartbeat_timer,
+ megasas_sriov_heartbeat_handler,
+ MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
+ }
+ clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
+ instance->instancet->enable_intr(instance);
+ instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
+ }
+out:
+ clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
+ mutex_unlock(&instance->reset_mutex);
+ return retval;
+}
+
+/* Fusion Crash dump collection work queue */
+void megasas_fusion_crash_dump_wq(struct work_struct *work)
+{
+ struct megasas_instance *instance =
+ container_of(work, struct megasas_instance, crash_init);
+ u32 status_reg;
+ u8 partial_copy = 0;
+
+
+ status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
+
+ /*
+ * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
+ * to host crash buffers
+ */
+ if (instance->drv_buf_index == 0) {
+ /* Buffer is already allocated for old Crash dump.
+ * Do OCR and do not wait for crash dump collection
+ */
+ if (instance->drv_buf_alloc) {
+ dev_info(&instance->pdev->dev, "earlier crash dump is "
+ "not yet copied by application, ignoring this "
+ "crash dump and initiating OCR\n");
+ status_reg |= MFI_STATE_CRASH_DUMP_DONE;
+ writel(status_reg,
+ &instance->reg_set->outbound_scratch_pad);
+ readl(&instance->reg_set->outbound_scratch_pad);
+ return;
+ }
+ megasas_alloc_host_crash_buffer(instance);
+ dev_info(&instance->pdev->dev, "Number of host crash buffers "
+ "allocated: %d\n", instance->drv_buf_alloc);
+ }
+
+ /*
+ * Driver has allocated max buffers, which can be allocated
+ * and FW has more crash dump data, then driver will
+ * ignore the data.
+ */
+ if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
+ dev_info(&instance->pdev->dev, "Driver is done copying "
+ "the buffer: %d\n", instance->drv_buf_alloc);
+ status_reg |= MFI_STATE_CRASH_DUMP_DONE;
+ partial_copy = 1;
+ } else {
+ memcpy(instance->crash_buf[instance->drv_buf_index],
+ instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
+ instance->drv_buf_index++;
+ status_reg &= ~MFI_STATE_DMADONE;
+ }
+
+ if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
+ dev_info(&instance->pdev->dev, "Crash Dump is available,number "
+ "of copied buffers: %d\n", instance->drv_buf_index);
+ instance->fw_crash_buffer_size = instance->drv_buf_index;
+ instance->fw_crash_state = AVAILABLE;
+ instance->drv_buf_index = 0;
+ writel(status_reg, &instance->reg_set->outbound_scratch_pad);
+ readl(&instance->reg_set->outbound_scratch_pad);
+ if (!partial_copy)
+ megasas_reset_fusion(instance->host, 0);
+ } else {
+ writel(status_reg, &instance->reg_set->outbound_scratch_pad);
+ readl(&instance->reg_set->outbound_scratch_pad);
+ }
+}
+
+
+/* Fusion OCR work queue */
+void megasas_fusion_ocr_wq(struct work_struct *work)
+{
+ struct megasas_instance *instance =
+ container_of(work, struct megasas_instance, work_init);
+
+ megasas_reset_fusion(instance->host, 0);
+}
+
+struct megasas_instance_template megasas_instance_template_fusion = {
+ .fire_cmd = megasas_fire_cmd_fusion,
+ .enable_intr = megasas_enable_intr_fusion,
+ .disable_intr = megasas_disable_intr_fusion,
+ .clear_intr = megasas_clear_intr_fusion,
+ .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
+ .adp_reset = megasas_adp_reset_fusion,
+ .check_reset = megasas_check_reset_fusion,
+ .service_isr = megasas_isr_fusion,
+ .tasklet = megasas_complete_cmd_dpc_fusion,
+ .init_adapter = megasas_init_adapter_fusion,
+ .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
+ .issue_dcmd = megasas_issue_dcmd_fusion,
+};
Code Review / kvmfornfv.git / blobdiff