--- /dev/null
+/*
+ * Marvell UMI driver
+ *
+ * Copyright 2011 Marvell. <jyli@marvell.com>
+ *
+ * This file is licensed under GPLv2.
+ *
+ * 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; version 2 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/blkdev.h>
+#include <linux/io.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_eh.h>
+#include <linux/uaccess.h>
+
+#include "mvumi.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("jyli@marvell.com");
+MODULE_DESCRIPTION("Marvell UMI Driver");
+
+static DEFINE_PCI_DEVICE_TABLE(mvumi_pci_table) = {
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_2, PCI_DEVICE_ID_MARVELL_MV9143) },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(pci, mvumi_pci_table);
+
+static void tag_init(struct mvumi_tag *st, unsigned short size)
+{
+ unsigned short i;
+ BUG_ON(size != st->size);
+ st->top = size;
+ for (i = 0; i < size; i++)
+ st->stack[i] = size - 1 - i;
+}
+
+static unsigned short tag_get_one(struct mvumi_hba *mhba, struct mvumi_tag *st)
+{
+ BUG_ON(st->top <= 0);
+ return st->stack[--st->top];
+}
+
+static void tag_release_one(struct mvumi_hba *mhba, struct mvumi_tag *st,
+ unsigned short tag)
+{
+ BUG_ON(st->top >= st->size);
+ st->stack[st->top++] = tag;
+}
+
+static bool tag_is_empty(struct mvumi_tag *st)
+{
+ if (st->top == 0)
+ return 1;
+ else
+ return 0;
+}
+
+static void mvumi_unmap_pci_addr(struct pci_dev *dev, void **addr_array)
+{
+ int i;
+
+ for (i = 0; i < MAX_BASE_ADDRESS; i++)
+ if ((pci_resource_flags(dev, i) & IORESOURCE_MEM) &&
+ addr_array[i])
+ pci_iounmap(dev, addr_array[i]);
+}
+
+static int mvumi_map_pci_addr(struct pci_dev *dev, void **addr_array)
+{
+ int i;
+
+ for (i = 0; i < MAX_BASE_ADDRESS; i++) {
+ if (pci_resource_flags(dev, i) & IORESOURCE_MEM) {
+ addr_array[i] = pci_iomap(dev, i, 0);
+ if (!addr_array[i]) {
+ dev_err(&dev->dev, "failed to map Bar[%d]\n",
+ i);
+ mvumi_unmap_pci_addr(dev, addr_array);
+ return -ENOMEM;
+ }
+ } else
+ addr_array[i] = NULL;
+
+ dev_dbg(&dev->dev, "Bar %d : %p.\n", i, addr_array[i]);
+ }
+
+ return 0;
+}
+
+static struct mvumi_res *mvumi_alloc_mem_resource(struct mvumi_hba *mhba,
+ enum resource_type type, unsigned int size)
+{
+ struct mvumi_res *res = kzalloc(sizeof(*res), GFP_KERNEL);
+
+ if (!res) {
+ dev_err(&mhba->pdev->dev,
+ "Failed to allocate memory for resouce manager.\n");
+ return NULL;
+ }
+
+ switch (type) {
+ case RESOURCE_CACHED_MEMORY:
+ res->virt_addr = kzalloc(size, GFP_KERNEL);
+ if (!res->virt_addr) {
+ dev_err(&mhba->pdev->dev,
+ "unable to allocate memory,size = %d.\n", size);
+ kfree(res);
+ return NULL;
+ }
+ break;
+
+ case RESOURCE_UNCACHED_MEMORY:
+ size = round_up(size, 8);
+ res->virt_addr = pci_alloc_consistent(mhba->pdev, size,
+ &res->bus_addr);
+ if (!res->virt_addr) {
+ dev_err(&mhba->pdev->dev,
+ "unable to allocate consistent mem,"
+ "size = %d.\n", size);
+ kfree(res);
+ return NULL;
+ }
+ memset(res->virt_addr, 0, size);
+ break;
+
+ default:
+ dev_err(&mhba->pdev->dev, "unknown resource type %d.\n", type);
+ kfree(res);
+ return NULL;
+ }
+
+ res->type = type;
+ res->size = size;
+ INIT_LIST_HEAD(&res->entry);
+ list_add_tail(&res->entry, &mhba->res_list);
+
+ return res;
+}
+
+static void mvumi_release_mem_resource(struct mvumi_hba *mhba)
+{
+ struct mvumi_res *res, *tmp;
+
+ list_for_each_entry_safe(res, tmp, &mhba->res_list, entry) {
+ switch (res->type) {
+ case RESOURCE_UNCACHED_MEMORY:
+ pci_free_consistent(mhba->pdev, res->size,
+ res->virt_addr, res->bus_addr);
+ break;
+ case RESOURCE_CACHED_MEMORY:
+ kfree(res->virt_addr);
+ break;
+ default:
+ dev_err(&mhba->pdev->dev,
+ "unknown resource type %d\n", res->type);
+ break;
+ }
+ list_del(&res->entry);
+ kfree(res);
+ }
+ mhba->fw_flag &= ~MVUMI_FW_ALLOC;
+}
+
+/**
+ * mvumi_make_sgl - Prepares SGL
+ * @mhba: Adapter soft state
+ * @scmd: SCSI command from the mid-layer
+ * @sgl_p: SGL to be filled in
+ * @sg_count return the number of SG elements
+ *
+ * If successful, this function returns 0. otherwise, it returns -1.
+ */
+static int mvumi_make_sgl(struct mvumi_hba *mhba, struct scsi_cmnd *scmd,
+ void *sgl_p, unsigned char *sg_count)
+{
+ struct scatterlist *sg;
+ struct mvumi_sgl *m_sg = (struct mvumi_sgl *) sgl_p;
+ unsigned int i;
+ unsigned int sgnum = scsi_sg_count(scmd);
+ dma_addr_t busaddr;
+
+ if (sgnum) {
+ sg = scsi_sglist(scmd);
+ *sg_count = pci_map_sg(mhba->pdev, sg, sgnum,
+ (int) scmd->sc_data_direction);
+ if (*sg_count > mhba->max_sge) {
+ dev_err(&mhba->pdev->dev, "sg count[0x%x] is bigger "
+ "than max sg[0x%x].\n",
+ *sg_count, mhba->max_sge);
+ return -1;
+ }
+ for (i = 0; i < *sg_count; i++) {
+ busaddr = sg_dma_address(&sg[i]);
+ m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(busaddr));
+ m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(busaddr));
+ m_sg->flags = 0;
+ m_sg->size = cpu_to_le32(sg_dma_len(&sg[i]));
+ if ((i + 1) == *sg_count)
+ m_sg->flags |= SGD_EOT;
+
+ m_sg++;
+ }
+ } else {
+ scmd->SCp.dma_handle = scsi_bufflen(scmd) ?
+ pci_map_single(mhba->pdev, scsi_sglist(scmd),
+ scsi_bufflen(scmd),
+ (int) scmd->sc_data_direction)
+ : 0;
+ busaddr = scmd->SCp.dma_handle;
+ m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(busaddr));
+ m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(busaddr));
+ m_sg->flags = SGD_EOT;
+ m_sg->size = cpu_to_le32(scsi_bufflen(scmd));
+ *sg_count = 1;
+ }
+
+ return 0;
+}
+
+static int mvumi_internal_cmd_sgl(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
+ unsigned int size)
+{
+ struct mvumi_sgl *m_sg;
+ void *virt_addr;
+ dma_addr_t phy_addr;
+
+ if (size == 0)
+ return 0;
+
+ virt_addr = pci_alloc_consistent(mhba->pdev, size, &phy_addr);
+ if (!virt_addr)
+ return -1;
+
+ memset(virt_addr, 0, size);
+
+ m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
+ cmd->frame->sg_counts = 1;
+ cmd->data_buf = virt_addr;
+
+ m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(phy_addr));
+ m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(phy_addr));
+ m_sg->flags = SGD_EOT;
+ m_sg->size = cpu_to_le32(size);
+
+ return 0;
+}
+
+static struct mvumi_cmd *mvumi_create_internal_cmd(struct mvumi_hba *mhba,
+ unsigned int buf_size)
+{
+ struct mvumi_cmd *cmd;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (!cmd) {
+ dev_err(&mhba->pdev->dev, "failed to create a internal cmd\n");
+ return NULL;
+ }
+ INIT_LIST_HEAD(&cmd->queue_pointer);
+
+ cmd->frame = kzalloc(mhba->ib_max_size, GFP_KERNEL);
+ if (!cmd->frame) {
+ dev_err(&mhba->pdev->dev, "failed to allocate memory for FW"
+ " frame,size = %d.\n", mhba->ib_max_size);
+ kfree(cmd);
+ return NULL;
+ }
+
+ if (buf_size) {
+ if (mvumi_internal_cmd_sgl(mhba, cmd, buf_size)) {
+ dev_err(&mhba->pdev->dev, "failed to allocate memory"
+ " for internal frame\n");
+ kfree(cmd->frame);
+ kfree(cmd);
+ return NULL;
+ }
+ } else
+ cmd->frame->sg_counts = 0;
+
+ return cmd;
+}
+
+static void mvumi_delete_internal_cmd(struct mvumi_hba *mhba,
+ struct mvumi_cmd *cmd)
+{
+ struct mvumi_sgl *m_sg;
+ unsigned int size;
+ dma_addr_t phy_addr;
+
+ if (cmd && cmd->frame) {
+ if (cmd->frame->sg_counts) {
+ m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
+ size = m_sg->size;
+
+ phy_addr = (dma_addr_t) m_sg->baseaddr_l |
+ (dma_addr_t) ((m_sg->baseaddr_h << 16) << 16);
+
+ pci_free_consistent(mhba->pdev, size, cmd->data_buf,
+ phy_addr);
+ }
+ kfree(cmd->frame);
+ kfree(cmd);
+ }
+}
+
+/**
+ * mvumi_get_cmd - Get a command from the free pool
+ * @mhba: Adapter soft state
+ *
+ * Returns a free command from the pool
+ */
+static struct mvumi_cmd *mvumi_get_cmd(struct mvumi_hba *mhba)
+{
+ struct mvumi_cmd *cmd = NULL;
+
+ if (likely(!list_empty(&mhba->cmd_pool))) {
+ cmd = list_entry((&mhba->cmd_pool)->next,
+ struct mvumi_cmd, queue_pointer);
+ list_del_init(&cmd->queue_pointer);
+ } else
+ dev_warn(&mhba->pdev->dev, "command pool is empty!\n");
+
+ return cmd;
+}
+
+/**
+ * mvumi_return_cmd - Return a cmd to free command pool
+ * @mhba: Adapter soft state
+ * @cmd: Command packet to be returned to free command pool
+ */
+static inline void mvumi_return_cmd(struct mvumi_hba *mhba,
+ struct mvumi_cmd *cmd)
+{
+ cmd->scmd = NULL;
+ list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
+}
+
+/**
+ * mvumi_free_cmds - Free all the cmds in the free cmd pool
+ * @mhba: Adapter soft state
+ */
+static void mvumi_free_cmds(struct mvumi_hba *mhba)
+{
+ struct mvumi_cmd *cmd;
+
+ while (!list_empty(&mhba->cmd_pool)) {
+ cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
+ queue_pointer);
+ list_del(&cmd->queue_pointer);
+ kfree(cmd->frame);
+ kfree(cmd);
+ }
+}
+
+/**
+ * mvumi_alloc_cmds - Allocates the command packets
+ * @mhba: Adapter soft state
+ *
+ */
+static int mvumi_alloc_cmds(struct mvumi_hba *mhba)
+{
+ int i;
+ struct mvumi_cmd *cmd;
+
+ for (i = 0; i < mhba->max_io; i++) {
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (!cmd)
+ goto err_exit;
+
+ INIT_LIST_HEAD(&cmd->queue_pointer);
+ list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
+ cmd->frame = kzalloc(mhba->ib_max_size, GFP_KERNEL);
+ if (!cmd->frame)
+ goto err_exit;
+ }
+ return 0;
+
+err_exit:
+ dev_err(&mhba->pdev->dev,
+ "failed to allocate memory for cmd[0x%x].\n", i);
+ while (!list_empty(&mhba->cmd_pool)) {
+ cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
+ queue_pointer);
+ list_del(&cmd->queue_pointer);
+ kfree(cmd->frame);
+ kfree(cmd);
+ }
+ return -ENOMEM;
+}
+
+static int mvumi_get_ib_list_entry(struct mvumi_hba *mhba, void **ib_entry)
+{
+ unsigned int ib_rp_reg, cur_ib_entry;
+
+ if (atomic_read(&mhba->fw_outstanding) >= mhba->max_io) {
+ dev_warn(&mhba->pdev->dev, "firmware io overflow.\n");
+ return -1;
+ }
+ ib_rp_reg = ioread32(mhba->mmio + CLA_INB_READ_POINTER);
+
+ if (unlikely(((ib_rp_reg & CL_SLOT_NUM_MASK) ==
+ (mhba->ib_cur_slot & CL_SLOT_NUM_MASK)) &&
+ ((ib_rp_reg & CL_POINTER_TOGGLE) !=
+ (mhba->ib_cur_slot & CL_POINTER_TOGGLE)))) {
+ dev_warn(&mhba->pdev->dev, "no free slot to use.\n");
+ return -1;
+ }
+
+ cur_ib_entry = mhba->ib_cur_slot & CL_SLOT_NUM_MASK;
+ cur_ib_entry++;
+ if (cur_ib_entry >= mhba->list_num_io) {
+ cur_ib_entry -= mhba->list_num_io;
+ mhba->ib_cur_slot ^= CL_POINTER_TOGGLE;
+ }
+ mhba->ib_cur_slot &= ~CL_SLOT_NUM_MASK;
+ mhba->ib_cur_slot |= (cur_ib_entry & CL_SLOT_NUM_MASK);
+ *ib_entry = mhba->ib_list + cur_ib_entry * mhba->ib_max_size;
+ atomic_inc(&mhba->fw_outstanding);
+
+ return 0;
+}
+
+static void mvumi_send_ib_list_entry(struct mvumi_hba *mhba)
+{
+ iowrite32(0xfff, mhba->ib_shadow);
+ iowrite32(mhba->ib_cur_slot, mhba->mmio + CLA_INB_WRITE_POINTER);
+}
+
+static char mvumi_check_ob_frame(struct mvumi_hba *mhba,
+ unsigned int cur_obf, struct mvumi_rsp_frame *p_outb_frame)
+{
+ unsigned short tag, request_id;
+
+ udelay(1);
+ p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
+ request_id = p_outb_frame->request_id;
+ tag = p_outb_frame->tag;
+ if (tag > mhba->tag_pool.size) {
+ dev_err(&mhba->pdev->dev, "ob frame data error\n");
+ return -1;
+ }
+ if (mhba->tag_cmd[tag] == NULL) {
+ dev_err(&mhba->pdev->dev, "tag[0x%x] with NO command\n", tag);
+ return -1;
+ } else if (mhba->tag_cmd[tag]->request_id != request_id &&
+ mhba->request_id_enabled) {
+ dev_err(&mhba->pdev->dev, "request ID from FW:0x%x,"
+ "cmd request ID:0x%x\n", request_id,
+ mhba->tag_cmd[tag]->request_id);
+ return -1;
+ }
+
+ return 0;
+}
+
+static void mvumi_receive_ob_list_entry(struct mvumi_hba *mhba)
+{
+ unsigned int ob_write_reg, ob_write_shadow_reg;
+ unsigned int cur_obf, assign_obf_end, i;
+ struct mvumi_ob_data *ob_data;
+ struct mvumi_rsp_frame *p_outb_frame;
+
+ do {
+ ob_write_reg = ioread32(mhba->mmio + CLA_OUTB_COPY_POINTER);
+ ob_write_shadow_reg = ioread32(mhba->ob_shadow);
+ } while ((ob_write_reg & CL_SLOT_NUM_MASK) != ob_write_shadow_reg);
+
+ cur_obf = mhba->ob_cur_slot & CL_SLOT_NUM_MASK;
+ assign_obf_end = ob_write_reg & CL_SLOT_NUM_MASK;
+
+ if ((ob_write_reg & CL_POINTER_TOGGLE) !=
+ (mhba->ob_cur_slot & CL_POINTER_TOGGLE)) {
+ assign_obf_end += mhba->list_num_io;
+ }
+
+ for (i = (assign_obf_end - cur_obf); i != 0; i--) {
+ cur_obf++;
+ if (cur_obf >= mhba->list_num_io) {
+ cur_obf -= mhba->list_num_io;
+ mhba->ob_cur_slot ^= CL_POINTER_TOGGLE;
+ }
+
+ p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
+
+ /* Copy pointer may point to entry in outbound list
+ * before entry has valid data
+ */
+ if (unlikely(p_outb_frame->tag > mhba->tag_pool.size ||
+ mhba->tag_cmd[p_outb_frame->tag] == NULL ||
+ p_outb_frame->request_id !=
+ mhba->tag_cmd[p_outb_frame->tag]->request_id))
+ if (mvumi_check_ob_frame(mhba, cur_obf, p_outb_frame))
+ continue;
+
+ if (!list_empty(&mhba->ob_data_list)) {
+ ob_data = (struct mvumi_ob_data *)
+ list_first_entry(&mhba->ob_data_list,
+ struct mvumi_ob_data, list);
+ list_del_init(&ob_data->list);
+ } else {
+ ob_data = NULL;
+ if (cur_obf == 0) {
+ cur_obf = mhba->list_num_io - 1;
+ mhba->ob_cur_slot ^= CL_POINTER_TOGGLE;
+ } else
+ cur_obf -= 1;
+ break;
+ }
+
+ memcpy(ob_data->data, p_outb_frame, mhba->ob_max_size);
+ p_outb_frame->tag = 0xff;
+
+ list_add_tail(&ob_data->list, &mhba->free_ob_list);
+ }
+ mhba->ob_cur_slot &= ~CL_SLOT_NUM_MASK;
+ mhba->ob_cur_slot |= (cur_obf & CL_SLOT_NUM_MASK);
+ iowrite32(mhba->ob_cur_slot, mhba->mmio + CLA_OUTB_READ_POINTER);
+}
+
+static void mvumi_reset(void *regs)
+{
+ iowrite32(0, regs + CPU_ENPOINTA_MASK_REG);
+ if (ioread32(regs + CPU_ARM_TO_PCIEA_MSG1) != HANDSHAKE_DONESTATE)
+ return;
+
+ iowrite32(DRBL_SOFT_RESET, regs + CPU_PCIEA_TO_ARM_DRBL_REG);
+}
+
+static unsigned char mvumi_start(struct mvumi_hba *mhba);
+
+static int mvumi_wait_for_outstanding(struct mvumi_hba *mhba)
+{
+ mhba->fw_state = FW_STATE_ABORT;
+ mvumi_reset(mhba->mmio);
+
+ if (mvumi_start(mhba))
+ return FAILED;
+ else
+ return SUCCESS;
+}
+
+static int mvumi_host_reset(struct scsi_cmnd *scmd)
+{
+ struct mvumi_hba *mhba;
+
+ mhba = (struct mvumi_hba *) scmd->device->host->hostdata;
+
+ scmd_printk(KERN_NOTICE, scmd, "RESET -%ld cmd=%x retries=%x\n",
+ scmd->serial_number, scmd->cmnd[0], scmd->retries);
+
+ return mvumi_wait_for_outstanding(mhba);
+}
+
+static int mvumi_issue_blocked_cmd(struct mvumi_hba *mhba,
+ struct mvumi_cmd *cmd)
+{
+ unsigned long flags;
+
+ cmd->cmd_status = REQ_STATUS_PENDING;
+
+ if (atomic_read(&cmd->sync_cmd)) {
+ dev_err(&mhba->pdev->dev,
+ "last blocked cmd not finished, sync_cmd = %d\n",
+ atomic_read(&cmd->sync_cmd));
+ BUG_ON(1);
+ return -1;
+ }
+ atomic_inc(&cmd->sync_cmd);
+ spin_lock_irqsave(mhba->shost->host_lock, flags);
+ mhba->instancet->fire_cmd(mhba, cmd);
+ spin_unlock_irqrestore(mhba->shost->host_lock, flags);
+
+ wait_event_timeout(mhba->int_cmd_wait_q,
+ (cmd->cmd_status != REQ_STATUS_PENDING),
+ MVUMI_INTERNAL_CMD_WAIT_TIME * HZ);
+
+ /* command timeout */
+ if (atomic_read(&cmd->sync_cmd)) {
+ spin_lock_irqsave(mhba->shost->host_lock, flags);
+ atomic_dec(&cmd->sync_cmd);
+ if (mhba->tag_cmd[cmd->frame->tag]) {
+ mhba->tag_cmd[cmd->frame->tag] = 0;
+ dev_warn(&mhba->pdev->dev, "TIMEOUT:release tag [%d]\n",
+ cmd->frame->tag);
+ tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
+ }
+ if (!list_empty(&cmd->queue_pointer)) {
+ dev_warn(&mhba->pdev->dev,
+ "TIMEOUT:A internal command doesn't send!\n");
+ list_del_init(&cmd->queue_pointer);
+ } else
+ atomic_dec(&mhba->fw_outstanding);
+
+ spin_unlock_irqrestore(mhba->shost->host_lock, flags);
+ }
+ return 0;
+}
+
+static void mvumi_release_fw(struct mvumi_hba *mhba)
+{
+ mvumi_free_cmds(mhba);
+ mvumi_release_mem_resource(mhba);
+ mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
+ kfree(mhba->handshake_page);
+ pci_release_regions(mhba->pdev);
+}
+
+static unsigned char mvumi_flush_cache(struct mvumi_hba *mhba)
+{
+ struct mvumi_cmd *cmd;
+ struct mvumi_msg_frame *frame;
+ unsigned char device_id, retry = 0;
+ unsigned char bitcount = sizeof(unsigned char) * 8;
+
+ for (device_id = 0; device_id < mhba->max_target_id; device_id++) {
+ if (!(mhba->target_map[device_id / bitcount] &
+ (1 << (device_id % bitcount))))
+ continue;
+get_cmd: cmd = mvumi_create_internal_cmd(mhba, 0);
+ if (!cmd) {
+ if (retry++ >= 5) {
+ dev_err(&mhba->pdev->dev, "failed to get memory"
+ " for internal flush cache cmd for "
+ "device %d", device_id);
+ retry = 0;
+ continue;
+ } else
+ goto get_cmd;
+ }
+ cmd->scmd = NULL;
+ cmd->cmd_status = REQ_STATUS_PENDING;
+ atomic_set(&cmd->sync_cmd, 0);
+ frame = cmd->frame;
+ frame->req_function = CL_FUN_SCSI_CMD;
+ frame->device_id = device_id;
+ frame->cmd_flag = CMD_FLAG_NON_DATA;
+ frame->data_transfer_length = 0;
+ frame->cdb_length = MAX_COMMAND_SIZE;
+ memset(frame->cdb, 0, MAX_COMMAND_SIZE);
+ frame->cdb[0] = SCSI_CMD_MARVELL_SPECIFIC;
+ frame->cdb[2] = CDB_CORE_SHUTDOWN;
+
+ mvumi_issue_blocked_cmd(mhba, cmd);
+ if (cmd->cmd_status != SAM_STAT_GOOD) {
+ dev_err(&mhba->pdev->dev,
+ "device %d flush cache failed, status=0x%x.\n",
+ device_id, cmd->cmd_status);
+ }
+
+ mvumi_delete_internal_cmd(mhba, cmd);
+ }
+ return 0;
+}
+
+static unsigned char
+mvumi_calculate_checksum(struct mvumi_hs_header *p_header,
+ unsigned short len)
+{
+ unsigned char *ptr;
+ unsigned char ret = 0, i;
+
+ ptr = (unsigned char *) p_header->frame_content;
+ for (i = 0; i < len; i++) {
+ ret ^= *ptr;
+ ptr++;
+ }
+
+ return ret;
+}
+
+void mvumi_hs_build_page(struct mvumi_hba *mhba,
+ struct mvumi_hs_header *hs_header)
+{
+ struct mvumi_hs_page2 *hs_page2;
+ struct mvumi_hs_page4 *hs_page4;
+ struct mvumi_hs_page3 *hs_page3;
+ struct timeval time;
+ unsigned int local_time;
+
+ switch (hs_header->page_code) {
+ case HS_PAGE_HOST_INFO:
+ hs_page2 = (struct mvumi_hs_page2 *) hs_header;
+ hs_header->frame_length = sizeof(*hs_page2) - 4;
+ memset(hs_header->frame_content, 0, hs_header->frame_length);
+ hs_page2->host_type = 3; /* 3 mean linux*/
+ hs_page2->host_ver.ver_major = VER_MAJOR;
+ hs_page2->host_ver.ver_minor = VER_MINOR;
+ hs_page2->host_ver.ver_oem = VER_OEM;
+ hs_page2->host_ver.ver_build = VER_BUILD;
+ hs_page2->system_io_bus = 0;
+ hs_page2->slot_number = 0;
+ hs_page2->intr_level = 0;
+ hs_page2->intr_vector = 0;
+ do_gettimeofday(&time);
+ local_time = (unsigned int) (time.tv_sec -
+ (sys_tz.tz_minuteswest * 60));
+ hs_page2->seconds_since1970 = local_time;
+ hs_header->checksum = mvumi_calculate_checksum(hs_header,
+ hs_header->frame_length);
+ break;
+
+ case HS_PAGE_FIRM_CTL:
+ hs_page3 = (struct mvumi_hs_page3 *) hs_header;
+ hs_header->frame_length = sizeof(*hs_page3) - 4;
+ memset(hs_header->frame_content, 0, hs_header->frame_length);
+ hs_header->checksum = mvumi_calculate_checksum(hs_header,
+ hs_header->frame_length);
+ break;
+
+ case HS_PAGE_CL_INFO:
+ hs_page4 = (struct mvumi_hs_page4 *) hs_header;
+ hs_header->frame_length = sizeof(*hs_page4) - 4;
+ memset(hs_header->frame_content, 0, hs_header->frame_length);
+ hs_page4->ib_baseaddr_l = lower_32_bits(mhba->ib_list_phys);
+ hs_page4->ib_baseaddr_h = upper_32_bits(mhba->ib_list_phys);
+
+ hs_page4->ob_baseaddr_l = lower_32_bits(mhba->ob_list_phys);
+ hs_page4->ob_baseaddr_h = upper_32_bits(mhba->ob_list_phys);
+ hs_page4->ib_entry_size = mhba->ib_max_size_setting;
+ hs_page4->ob_entry_size = mhba->ob_max_size_setting;
+ hs_page4->ob_depth = mhba->list_num_io;
+ hs_page4->ib_depth = mhba->list_num_io;
+ hs_header->checksum = mvumi_calculate_checksum(hs_header,
+ hs_header->frame_length);
+ break;
+
+ default:
+ dev_err(&mhba->pdev->dev, "cannot build page, code[0x%x]\n",
+ hs_header->page_code);
+ break;
+ }
+}
+
+/**
+ * mvumi_init_data - Initialize requested date for FW
+ * @mhba: Adapter soft state
+ */
+static int mvumi_init_data(struct mvumi_hba *mhba)
+{
+ struct mvumi_ob_data *ob_pool;
+ struct mvumi_res *res_mgnt;
+ unsigned int tmp_size, offset, i;
+ void *virmem, *v;
+ dma_addr_t p;
+
+ if (mhba->fw_flag & MVUMI_FW_ALLOC)
+ return 0;
+
+ tmp_size = mhba->ib_max_size * mhba->max_io;
+ tmp_size += 128 + mhba->ob_max_size * mhba->max_io;
+ tmp_size += 8 + sizeof(u32) + 16;
+
+ res_mgnt = mvumi_alloc_mem_resource(mhba,
+ RESOURCE_UNCACHED_MEMORY, tmp_size);
+ if (!res_mgnt) {
+ dev_err(&mhba->pdev->dev,
+ "failed to allocate memory for inbound list\n");
+ goto fail_alloc_dma_buf;
+ }
+
+ p = res_mgnt->bus_addr;
+ v = res_mgnt->virt_addr;
+ /* ib_list */
+ offset = round_up(p, 128) - p;
+ p += offset;
+ v += offset;
+ mhba->ib_list = v;
+ mhba->ib_list_phys = p;
+ v += mhba->ib_max_size * mhba->max_io;
+ p += mhba->ib_max_size * mhba->max_io;
+ /* ib shadow */
+ offset = round_up(p, 8) - p;
+ p += offset;
+ v += offset;
+ mhba->ib_shadow = v;
+ mhba->ib_shadow_phys = p;
+ p += sizeof(u32);
+ v += sizeof(u32);
+ /* ob shadow */
+ offset = round_up(p, 8) - p;
+ p += offset;
+ v += offset;
+ mhba->ob_shadow = v;
+ mhba->ob_shadow_phys = p;
+ p += 8;
+ v += 8;
+
+ /* ob list */
+ offset = round_up(p, 128) - p;
+ p += offset;
+ v += offset;
+
+ mhba->ob_list = v;
+ mhba->ob_list_phys = p;
+
+ /* ob data pool */
+ tmp_size = mhba->max_io * (mhba->ob_max_size + sizeof(*ob_pool));
+ tmp_size = round_up(tmp_size, 8);
+
+ res_mgnt = mvumi_alloc_mem_resource(mhba,
+ RESOURCE_CACHED_MEMORY, tmp_size);
+ if (!res_mgnt) {
+ dev_err(&mhba->pdev->dev,
+ "failed to allocate memory for outbound data buffer\n");
+ goto fail_alloc_dma_buf;
+ }
+ virmem = res_mgnt->virt_addr;
+
+ for (i = mhba->max_io; i != 0; i--) {
+ ob_pool = (struct mvumi_ob_data *) virmem;
+ list_add_tail(&ob_pool->list, &mhba->ob_data_list);
+ virmem += mhba->ob_max_size + sizeof(*ob_pool);
+ }
+
+ tmp_size = sizeof(unsigned short) * mhba->max_io +
+ sizeof(struct mvumi_cmd *) * mhba->max_io;
+ tmp_size += round_up(mhba->max_target_id, sizeof(unsigned char) * 8) /
+ (sizeof(unsigned char) * 8);
+
+ res_mgnt = mvumi_alloc_mem_resource(mhba,
+ RESOURCE_CACHED_MEMORY, tmp_size);
+ if (!res_mgnt) {
+ dev_err(&mhba->pdev->dev,
+ "failed to allocate memory for tag and target map\n");
+ goto fail_alloc_dma_buf;
+ }
+
+ virmem = res_mgnt->virt_addr;
+ mhba->tag_pool.stack = virmem;
+ mhba->tag_pool.size = mhba->max_io;
+ tag_init(&mhba->tag_pool, mhba->max_io);
+ virmem += sizeof(unsigned short) * mhba->max_io;
+
+ mhba->tag_cmd = virmem;
+ virmem += sizeof(struct mvumi_cmd *) * mhba->max_io;
+
+ mhba->target_map = virmem;
+
+ mhba->fw_flag |= MVUMI_FW_ALLOC;
+ return 0;
+
+fail_alloc_dma_buf:
+ mvumi_release_mem_resource(mhba);
+ return -1;
+}
+
+static int mvumi_hs_process_page(struct mvumi_hba *mhba,
+ struct mvumi_hs_header *hs_header)
+{
+ struct mvumi_hs_page1 *hs_page1;
+ unsigned char page_checksum;
+
+ page_checksum = mvumi_calculate_checksum(hs_header,
+ hs_header->frame_length);
+ if (page_checksum != hs_header->checksum) {
+ dev_err(&mhba->pdev->dev, "checksum error\n");
+ return -1;
+ }
+
+ switch (hs_header->page_code) {
+ case HS_PAGE_FIRM_CAP:
+ hs_page1 = (struct mvumi_hs_page1 *) hs_header;
+
+ mhba->max_io = hs_page1->max_io_support;
+ mhba->list_num_io = hs_page1->cl_inout_list_depth;
+ mhba->max_transfer_size = hs_page1->max_transfer_size;
+ mhba->max_target_id = hs_page1->max_devices_support;
+ mhba->hba_capability = hs_page1->capability;
+ mhba->ib_max_size_setting = hs_page1->cl_in_max_entry_size;
+ mhba->ib_max_size = (1 << hs_page1->cl_in_max_entry_size) << 2;
+
+ mhba->ob_max_size_setting = hs_page1->cl_out_max_entry_size;
+ mhba->ob_max_size = (1 << hs_page1->cl_out_max_entry_size) << 2;
+
+ dev_dbg(&mhba->pdev->dev, "FW version:%d\n",
+ hs_page1->fw_ver.ver_build);
+
+ break;
+ default:
+ dev_err(&mhba->pdev->dev, "handshake: page code error\n");
+ return -1;
+ }
+ return 0;
+}
+
+/**
+ * mvumi_handshake - Move the FW to READY state
+ * @mhba: Adapter soft state
+ *
+ * During the initialization, FW passes can potentially be in any one of
+ * several possible states. If the FW in operational, waiting-for-handshake
+ * states, driver must take steps to bring it to ready state. Otherwise, it
+ * has to wait for the ready state.
+ */
+static int mvumi_handshake(struct mvumi_hba *mhba)
+{
+ unsigned int hs_state, tmp, hs_fun;
+ struct mvumi_hs_header *hs_header;
+ void *regs = mhba->mmio;
+
+ if (mhba->fw_state == FW_STATE_STARTING)
+ hs_state = HS_S_START;
+ else {
+ tmp = ioread32(regs + CPU_ARM_TO_PCIEA_MSG0);
+ hs_state = HS_GET_STATE(tmp);
+ dev_dbg(&mhba->pdev->dev, "handshake state[0x%x].\n", hs_state);
+ if (HS_GET_STATUS(tmp) != HS_STATUS_OK) {
+ mhba->fw_state = FW_STATE_STARTING;
+ return -1;
+ }
+ }
+
+ hs_fun = 0;
+ switch (hs_state) {
+ case HS_S_START:
+ mhba->fw_state = FW_STATE_HANDSHAKING;
+ HS_SET_STATUS(hs_fun, HS_STATUS_OK);
+ HS_SET_STATE(hs_fun, HS_S_RESET);
+ iowrite32(HANDSHAKE_SIGNATURE, regs + CPU_PCIEA_TO_ARM_MSG1);
+ iowrite32(hs_fun, regs + CPU_PCIEA_TO_ARM_MSG0);
+ iowrite32(DRBL_HANDSHAKE, regs + CPU_PCIEA_TO_ARM_DRBL_REG);
+ break;
+
+ case HS_S_RESET:
+ iowrite32(lower_32_bits(mhba->handshake_page_phys),
+ regs + CPU_PCIEA_TO_ARM_MSG1);
+ iowrite32(upper_32_bits(mhba->handshake_page_phys),
+ regs + CPU_ARM_TO_PCIEA_MSG1);
+ HS_SET_STATUS(hs_fun, HS_STATUS_OK);
+ HS_SET_STATE(hs_fun, HS_S_PAGE_ADDR);
+ iowrite32(hs_fun, regs + CPU_PCIEA_TO_ARM_MSG0);
+ iowrite32(DRBL_HANDSHAKE, regs + CPU_PCIEA_TO_ARM_DRBL_REG);
+
+ break;
+
+ case HS_S_PAGE_ADDR:
+ case HS_S_QUERY_PAGE:
+ case HS_S_SEND_PAGE:
+ hs_header = (struct mvumi_hs_header *) mhba->handshake_page;
+ if (hs_header->page_code == HS_PAGE_FIRM_CAP) {
+ mhba->hba_total_pages =
+ ((struct mvumi_hs_page1 *) hs_header)->total_pages;
+
+ if (mhba->hba_total_pages == 0)
+ mhba->hba_total_pages = HS_PAGE_TOTAL-1;
+ }
+
+ if (hs_state == HS_S_QUERY_PAGE) {
+ if (mvumi_hs_process_page(mhba, hs_header)) {
+ HS_SET_STATE(hs_fun, HS_S_ABORT);
+ return -1;
+ }
+ if (mvumi_init_data(mhba)) {
+ HS_SET_STATE(hs_fun, HS_S_ABORT);
+ return -1;
+ }
+ } else if (hs_state == HS_S_PAGE_ADDR) {
+ hs_header->page_code = 0;
+ mhba->hba_total_pages = HS_PAGE_TOTAL-1;
+ }
+
+ if ((hs_header->page_code + 1) <= mhba->hba_total_pages) {
+ hs_header->page_code++;
+ if (hs_header->page_code != HS_PAGE_FIRM_CAP) {
+ mvumi_hs_build_page(mhba, hs_header);
+ HS_SET_STATE(hs_fun, HS_S_SEND_PAGE);
+ } else
+ HS_SET_STATE(hs_fun, HS_S_QUERY_PAGE);
+ } else
+ HS_SET_STATE(hs_fun, HS_S_END);
+
+ HS_SET_STATUS(hs_fun, HS_STATUS_OK);
+ iowrite32(hs_fun, regs + CPU_PCIEA_TO_ARM_MSG0);
+ iowrite32(DRBL_HANDSHAKE, regs + CPU_PCIEA_TO_ARM_DRBL_REG);
+ break;
+
+ case HS_S_END:
+ /* Set communication list ISR */
+ tmp = ioread32(regs + CPU_ENPOINTA_MASK_REG);
+ tmp |= INT_MAP_COMAOUT | INT_MAP_COMAERR;
+ iowrite32(tmp, regs + CPU_ENPOINTA_MASK_REG);
+ iowrite32(mhba->list_num_io, mhba->ib_shadow);
+ /* Set InBound List Avaliable count shadow */
+ iowrite32(lower_32_bits(mhba->ib_shadow_phys),
+ regs + CLA_INB_AVAL_COUNT_BASEL);
+ iowrite32(upper_32_bits(mhba->ib_shadow_phys),
+ regs + CLA_INB_AVAL_COUNT_BASEH);
+
+ /* Set OutBound List Avaliable count shadow */
+ iowrite32((mhba->list_num_io-1) | CL_POINTER_TOGGLE,
+ mhba->ob_shadow);
+ iowrite32(lower_32_bits(mhba->ob_shadow_phys), regs + 0x5B0);
+ iowrite32(upper_32_bits(mhba->ob_shadow_phys), regs + 0x5B4);
+
+ mhba->ib_cur_slot = (mhba->list_num_io - 1) | CL_POINTER_TOGGLE;
+ mhba->ob_cur_slot = (mhba->list_num_io - 1) | CL_POINTER_TOGGLE;
+ mhba->fw_state = FW_STATE_STARTED;
+
+ break;
+ default:
+ dev_err(&mhba->pdev->dev, "unknown handshake state [0x%x].\n",
+ hs_state);
+ return -1;
+ }
+ return 0;
+}
+
+static unsigned char mvumi_handshake_event(struct mvumi_hba *mhba)
+{
+ unsigned int isr_status;
+ unsigned long before;
+
+ before = jiffies;
+ mvumi_handshake(mhba);
+ do {
+ isr_status = mhba->instancet->read_fw_status_reg(mhba->mmio);
+
+ if (mhba->fw_state == FW_STATE_STARTED)
+ return 0;
+ if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
+ dev_err(&mhba->pdev->dev,
+ "no handshake response at state 0x%x.\n",
+ mhba->fw_state);
+ dev_err(&mhba->pdev->dev,
+ "isr : global=0x%x,status=0x%x.\n",
+ mhba->global_isr, isr_status);
+ return -1;
+ }
+ rmb();
+ usleep_range(1000, 2000);
+ } while (!(isr_status & DRBL_HANDSHAKE_ISR));
+
+ return 0;
+}
+
+static unsigned char mvumi_check_handshake(struct mvumi_hba *mhba)
+{
+ void *regs = mhba->mmio;
+ unsigned int tmp;
+ unsigned long before;
+
+ before = jiffies;
+ tmp = ioread32(regs + CPU_ARM_TO_PCIEA_MSG1);
+ while ((tmp != HANDSHAKE_READYSTATE) && (tmp != HANDSHAKE_DONESTATE)) {
+ if (tmp != HANDSHAKE_READYSTATE)
+ iowrite32(DRBL_MU_RESET,
+ regs + CPU_PCIEA_TO_ARM_DRBL_REG);
+ if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
+ dev_err(&mhba->pdev->dev,
+ "invalid signature [0x%x].\n", tmp);
+ return -1;
+ }
+ usleep_range(1000, 2000);
+ rmb();
+ tmp = ioread32(regs + CPU_ARM_TO_PCIEA_MSG1);
+ }
+
+ mhba->fw_state = FW_STATE_STARTING;
+ dev_dbg(&mhba->pdev->dev, "start firmware handshake...\n");
+ do {
+ if (mvumi_handshake_event(mhba)) {
+ dev_err(&mhba->pdev->dev,
+ "handshake failed at state 0x%x.\n",
+ mhba->fw_state);
+ return -1;
+ }
+ } while (mhba->fw_state != FW_STATE_STARTED);
+
+ dev_dbg(&mhba->pdev->dev, "firmware handshake done\n");
+
+ return 0;
+}
+
+static unsigned char mvumi_start(struct mvumi_hba *mhba)
+{
+ void *regs = mhba->mmio;
+ unsigned int tmp;
+ /* clear Door bell */
+ tmp = ioread32(regs + CPU_ARM_TO_PCIEA_DRBL_REG);
+ iowrite32(tmp, regs + CPU_ARM_TO_PCIEA_DRBL_REG);
+
+ iowrite32(0x3FFFFFFF, regs + CPU_ARM_TO_PCIEA_MASK_REG);
+ tmp = ioread32(regs + CPU_ENPOINTA_MASK_REG) | INT_MAP_DL_CPU2PCIEA;
+ iowrite32(tmp, regs + CPU_ENPOINTA_MASK_REG);
+ if (mvumi_check_handshake(mhba))
+ return -1;
+
+ return 0;
+}
+
+/**
+ * mvumi_complete_cmd - Completes a command
+ * @mhba: Adapter soft state
+ * @cmd: Command to be completed
+ */
+static void mvumi_complete_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
+ struct mvumi_rsp_frame *ob_frame)
+{
+ struct scsi_cmnd *scmd = cmd->scmd;
+
+ cmd->scmd->SCp.ptr = NULL;
+ scmd->result = ob_frame->req_status;
+
+ switch (ob_frame->req_status) {
+ case SAM_STAT_GOOD:
+ scmd->result |= DID_OK << 16;
+ break;
+ case SAM_STAT_BUSY:
+ scmd->result |= DID_BUS_BUSY << 16;
+ break;
+ case SAM_STAT_CHECK_CONDITION:
+ scmd->result |= (DID_OK << 16);
+ if (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) {
+ memcpy(cmd->scmd->sense_buffer, ob_frame->payload,
+ sizeof(struct mvumi_sense_data));
+ scmd->result |= (DRIVER_SENSE << 24);
+ }
+ break;
+ default:
+ scmd->result |= (DRIVER_INVALID << 24) | (DID_ABORT << 16);
+ break;
+ }
+
+ if (scsi_bufflen(scmd)) {
+ if (scsi_sg_count(scmd)) {
+ pci_unmap_sg(mhba->pdev,
+ scsi_sglist(scmd),
+ scsi_sg_count(scmd),
+ (int) scmd->sc_data_direction);
+ } else {
+ pci_unmap_single(mhba->pdev,
+ scmd->SCp.dma_handle,
+ scsi_bufflen(scmd),
+ (int) scmd->sc_data_direction);
+
+ scmd->SCp.dma_handle = 0;
+ }
+ }
+ cmd->scmd->scsi_done(scmd);
+ mvumi_return_cmd(mhba, cmd);
+}
+static void mvumi_complete_internal_cmd(struct mvumi_hba *mhba,
+ struct mvumi_cmd *cmd,
+ struct mvumi_rsp_frame *ob_frame)
+{
+ if (atomic_read(&cmd->sync_cmd)) {
+ cmd->cmd_status = ob_frame->req_status;
+
+ if ((ob_frame->req_status == SAM_STAT_CHECK_CONDITION) &&
+ (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) &&
+ cmd->data_buf) {
+ memcpy(cmd->data_buf, ob_frame->payload,
+ sizeof(struct mvumi_sense_data));
+ }
+ atomic_dec(&cmd->sync_cmd);
+ wake_up(&mhba->int_cmd_wait_q);
+ }
+}
+
+static void mvumi_show_event(struct mvumi_hba *mhba,
+ struct mvumi_driver_event *ptr)
+{
+ unsigned int i;
+
+ dev_warn(&mhba->pdev->dev,
+ "Event[0x%x] id[0x%x] severity[0x%x] device id[0x%x]\n",
+ ptr->sequence_no, ptr->event_id, ptr->severity, ptr->device_id);
+ if (ptr->param_count) {
+ printk(KERN_WARNING "Event param(len 0x%x): ",
+ ptr->param_count);
+ for (i = 0; i < ptr->param_count; i++)
+ printk(KERN_WARNING "0x%x ", ptr->params[i]);
+
+ printk(KERN_WARNING "\n");
+ }
+
+ if (ptr->sense_data_length) {
+ printk(KERN_WARNING "Event sense data(len 0x%x): ",
+ ptr->sense_data_length);
+ for (i = 0; i < ptr->sense_data_length; i++)
+ printk(KERN_WARNING "0x%x ", ptr->sense_data[i]);
+ printk(KERN_WARNING "\n");
+ }
+}
+
+static void mvumi_notification(struct mvumi_hba *mhba, u8 msg, void *buffer)
+{
+ if (msg == APICDB1_EVENT_GETEVENT) {
+ int i, count;
+ struct mvumi_driver_event *param = NULL;
+ struct mvumi_event_req *er = buffer;
+ count = er->count;
+ if (count > MAX_EVENTS_RETURNED) {
+ dev_err(&mhba->pdev->dev, "event count[0x%x] is bigger"
+ " than max event count[0x%x].\n",
+ count, MAX_EVENTS_RETURNED);
+ return;
+ }
+ for (i = 0; i < count; i++) {
+ param = &er->events[i];
+ mvumi_show_event(mhba, param);
+ }
+ }
+}
+
+static int mvumi_get_event(struct mvumi_hba *mhba, unsigned char msg)
+{
+ struct mvumi_cmd *cmd;
+ struct mvumi_msg_frame *frame;
+
+ cmd = mvumi_create_internal_cmd(mhba, 512);
+ if (!cmd)
+ return -1;
+ cmd->scmd = NULL;
+ cmd->cmd_status = REQ_STATUS_PENDING;
+ atomic_set(&cmd->sync_cmd, 0);
+ frame = cmd->frame;
+ frame->device_id = 0;
+ frame->cmd_flag = CMD_FLAG_DATA_IN;
+ frame->req_function = CL_FUN_SCSI_CMD;
+ frame->cdb_length = MAX_COMMAND_SIZE;
+ frame->data_transfer_length = sizeof(struct mvumi_event_req);
+ memset(frame->cdb, 0, MAX_COMMAND_SIZE);
+ frame->cdb[0] = APICDB0_EVENT;
+ frame->cdb[1] = msg;
+ mvumi_issue_blocked_cmd(mhba, cmd);
+
+ if (cmd->cmd_status != SAM_STAT_GOOD)
+ dev_err(&mhba->pdev->dev, "get event failed, status=0x%x.\n",
+ cmd->cmd_status);
+ else
+ mvumi_notification(mhba, cmd->frame->cdb[1], cmd->data_buf);
+
+ mvumi_delete_internal_cmd(mhba, cmd);
+ return 0;
+}
+
+static void mvumi_scan_events(struct work_struct *work)
+{
+ struct mvumi_events_wq *mu_ev =
+ container_of(work, struct mvumi_events_wq, work_q);
+
+ mvumi_get_event(mu_ev->mhba, mu_ev->event);
+ kfree(mu_ev);
+}
+
+static void mvumi_launch_events(struct mvumi_hba *mhba, u8 msg)
+{
+ struct mvumi_events_wq *mu_ev;
+
+ mu_ev = kzalloc(sizeof(*mu_ev), GFP_ATOMIC);
+ if (mu_ev) {
+ INIT_WORK(&mu_ev->work_q, mvumi_scan_events);
+ mu_ev->mhba = mhba;
+ mu_ev->event = msg;
+ mu_ev->param = NULL;
+ schedule_work(&mu_ev->work_q);
+ }
+}
+
+static void mvumi_handle_clob(struct mvumi_hba *mhba)
+{
+ struct mvumi_rsp_frame *ob_frame;
+ struct mvumi_cmd *cmd;
+ struct mvumi_ob_data *pool;
+
+ while (!list_empty(&mhba->free_ob_list)) {
+ pool = list_first_entry(&mhba->free_ob_list,
+ struct mvumi_ob_data, list);
+ list_del_init(&pool->list);
+ list_add_tail(&pool->list, &mhba->ob_data_list);
+
+ ob_frame = (struct mvumi_rsp_frame *) &pool->data[0];
+ cmd = mhba->tag_cmd[ob_frame->tag];
+
+ atomic_dec(&mhba->fw_outstanding);
+ mhba->tag_cmd[ob_frame->tag] = 0;
+ tag_release_one(mhba, &mhba->tag_pool, ob_frame->tag);
+ if (cmd->scmd)
+ mvumi_complete_cmd(mhba, cmd, ob_frame);
+ else
+ mvumi_complete_internal_cmd(mhba, cmd, ob_frame);
+ }
+ mhba->instancet->fire_cmd(mhba, NULL);
+}
+
+static irqreturn_t mvumi_isr_handler(int irq, void *devp)
+{
+ struct mvumi_hba *mhba = (struct mvumi_hba *) devp;
+ unsigned long flags;
+
+ spin_lock_irqsave(mhba->shost->host_lock, flags);
+ if (unlikely(mhba->instancet->clear_intr(mhba) || !mhba->global_isr)) {
+ spin_unlock_irqrestore(mhba->shost->host_lock, flags);
+ return IRQ_NONE;
+ }
+
+ if (mhba->global_isr & INT_MAP_DL_CPU2PCIEA) {
+ if (mhba->isr_status & DRBL_HANDSHAKE_ISR) {
+ dev_warn(&mhba->pdev->dev, "enter handshake again!\n");
+ mvumi_handshake(mhba);
+ }
+ if (mhba->isr_status & DRBL_EVENT_NOTIFY)
+ mvumi_launch_events(mhba, APICDB1_EVENT_GETEVENT);
+ }
+
+ if (mhba->global_isr & INT_MAP_COMAOUT)
+ mvumi_receive_ob_list_entry(mhba);
+
+ mhba->global_isr = 0;
+ mhba->isr_status = 0;
+ if (mhba->fw_state == FW_STATE_STARTED)
+ mvumi_handle_clob(mhba);
+ spin_unlock_irqrestore(mhba->shost->host_lock, flags);
+ return IRQ_HANDLED;
+}
+
+static enum mvumi_qc_result mvumi_send_command(struct mvumi_hba *mhba,
+ struct mvumi_cmd *cmd)
+{
+ void *ib_entry;
+ struct mvumi_msg_frame *ib_frame;
+ unsigned int frame_len;
+
+ ib_frame = cmd->frame;
+ if (unlikely(mhba->fw_state != FW_STATE_STARTED)) {
+ dev_dbg(&mhba->pdev->dev, "firmware not ready.\n");
+ return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
+ }
+ if (tag_is_empty(&mhba->tag_pool)) {
+ dev_dbg(&mhba->pdev->dev, "no free tag.\n");
+ return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
+ }
+ if (mvumi_get_ib_list_entry(mhba, &ib_entry))
+ return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
+
+ cmd->frame->tag = tag_get_one(mhba, &mhba->tag_pool);
+ cmd->frame->request_id = mhba->io_seq++;
+ cmd->request_id = cmd->frame->request_id;
+ mhba->tag_cmd[cmd->frame->tag] = cmd;
+ frame_len = sizeof(*ib_frame) - 4 +
+ ib_frame->sg_counts * sizeof(struct mvumi_sgl);
+ memcpy(ib_entry, ib_frame, frame_len);
+ return MV_QUEUE_COMMAND_RESULT_SENT;
+}
+
+static void mvumi_fire_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd)
+{
+ unsigned short num_of_cl_sent = 0;
+ enum mvumi_qc_result result;
+
+ if (cmd)
+ list_add_tail(&cmd->queue_pointer, &mhba->waiting_req_list);
+
+ while (!list_empty(&mhba->waiting_req_list)) {
+ cmd = list_first_entry(&mhba->waiting_req_list,
+ struct mvumi_cmd, queue_pointer);
+ list_del_init(&cmd->queue_pointer);
+ result = mvumi_send_command(mhba, cmd);
+ switch (result) {
+ case MV_QUEUE_COMMAND_RESULT_SENT:
+ num_of_cl_sent++;
+ break;
+ case MV_QUEUE_COMMAND_RESULT_NO_RESOURCE:
+ list_add(&cmd->queue_pointer, &mhba->waiting_req_list);
+ if (num_of_cl_sent > 0)
+ mvumi_send_ib_list_entry(mhba);
+
+ return;
+ }
+ }
+ if (num_of_cl_sent > 0)
+ mvumi_send_ib_list_entry(mhba);
+}
+
+/**
+ * mvumi_enable_intr - Enables interrupts
+ * @regs: FW register set
+ */
+static void mvumi_enable_intr(void *regs)
+{
+ unsigned int mask;
+
+ iowrite32(0x3FFFFFFF, regs + CPU_ARM_TO_PCIEA_MASK_REG);
+ mask = ioread32(regs + CPU_ENPOINTA_MASK_REG);
+ mask |= INT_MAP_DL_CPU2PCIEA | INT_MAP_COMAOUT | INT_MAP_COMAERR;
+ iowrite32(mask, regs + CPU_ENPOINTA_MASK_REG);
+}
+
+/**
+ * mvumi_disable_intr -Disables interrupt
+ * @regs: FW register set
+ */
+static void mvumi_disable_intr(void *regs)
+{
+ unsigned int mask;
+
+ iowrite32(0, regs + CPU_ARM_TO_PCIEA_MASK_REG);
+ mask = ioread32(regs + CPU_ENPOINTA_MASK_REG);
+ mask &= ~(INT_MAP_DL_CPU2PCIEA | INT_MAP_COMAOUT | INT_MAP_COMAERR);
+ iowrite32(mask, regs + CPU_ENPOINTA_MASK_REG);
+}
+
+static int mvumi_clear_intr(void *extend)
+{
+ struct mvumi_hba *mhba = (struct mvumi_hba *) extend;
+ unsigned int status, isr_status = 0, tmp = 0;
+ void *regs = mhba->mmio;
+
+ status = ioread32(regs + CPU_MAIN_INT_CAUSE_REG);
+ if (!(status & INT_MAP_MU) || status == 0xFFFFFFFF)
+ return 1;
+ if (unlikely(status & INT_MAP_COMAERR)) {
+ tmp = ioread32(regs + CLA_ISR_CAUSE);
+ if (tmp & (CLIC_IN_ERR_IRQ | CLIC_OUT_ERR_IRQ))
+ iowrite32(tmp & (CLIC_IN_ERR_IRQ | CLIC_OUT_ERR_IRQ),
+ regs + CLA_ISR_CAUSE);
+ status ^= INT_MAP_COMAERR;
+ /* inbound or outbound parity error, command will timeout */
+ }
+ if (status & INT_MAP_COMAOUT) {
+ tmp = ioread32(regs + CLA_ISR_CAUSE);
+ if (tmp & CLIC_OUT_IRQ)
+ iowrite32(tmp & CLIC_OUT_IRQ, regs + CLA_ISR_CAUSE);
+ }
+ if (status & INT_MAP_DL_CPU2PCIEA) {
+ isr_status = ioread32(regs + CPU_ARM_TO_PCIEA_DRBL_REG);
+ if (isr_status)
+ iowrite32(isr_status, regs + CPU_ARM_TO_PCIEA_DRBL_REG);
+ }
+
+ mhba->global_isr = status;
+ mhba->isr_status = isr_status;
+
+ return 0;
+}
+
+/**
+ * mvumi_read_fw_status_reg - returns the current FW status value
+ * @regs: FW register set
+ */
+static unsigned int mvumi_read_fw_status_reg(void *regs)
+{
+ unsigned int status;
+
+ status = ioread32(regs + CPU_ARM_TO_PCIEA_DRBL_REG);
+ if (status)
+ iowrite32(status, regs + CPU_ARM_TO_PCIEA_DRBL_REG);
+ return status;
+}
+
+static struct mvumi_instance_template mvumi_instance_template = {
+ .fire_cmd = mvumi_fire_cmd,
+ .enable_intr = mvumi_enable_intr,
+ .disable_intr = mvumi_disable_intr,
+ .clear_intr = mvumi_clear_intr,
+ .read_fw_status_reg = mvumi_read_fw_status_reg,
+};
+
+static int mvumi_slave_configure(struct scsi_device *sdev)
+{
+ struct mvumi_hba *mhba;
+ unsigned char bitcount = sizeof(unsigned char) * 8;
+
+ mhba = (struct mvumi_hba *) sdev->host->hostdata;
+ if (sdev->id >= mhba->max_target_id)
+ return -EINVAL;
+
+ mhba->target_map[sdev->id / bitcount] |= (1 << (sdev->id % bitcount));
+ return 0;
+}
+
+/**
+ * mvumi_build_frame - Prepares a direct cdb (DCDB) command
+ * @mhba: Adapter soft state
+ * @scmd: SCSI command
+ * @cmd: Command to be prepared in
+ *
+ * This function prepares CDB commands. These are typcially pass-through
+ * commands to the devices.
+ */
+static unsigned char mvumi_build_frame(struct mvumi_hba *mhba,
+ struct scsi_cmnd *scmd, struct mvumi_cmd *cmd)
+{
+ struct mvumi_msg_frame *pframe;
+
+ cmd->scmd = scmd;
+ cmd->cmd_status = REQ_STATUS_PENDING;
+ pframe = cmd->frame;
+ pframe->device_id = ((unsigned short) scmd->device->id) |
+ (((unsigned short) scmd->device->lun) << 8);
+ pframe->cmd_flag = 0;
+
+ switch (scmd->sc_data_direction) {
+ case DMA_NONE:
+ pframe->cmd_flag |= CMD_FLAG_NON_DATA;
+ break;
+ case DMA_FROM_DEVICE:
+ pframe->cmd_flag |= CMD_FLAG_DATA_IN;
+ break;
+ case DMA_TO_DEVICE:
+ pframe->cmd_flag |= CMD_FLAG_DATA_OUT;
+ break;
+ case DMA_BIDIRECTIONAL:
+ default:
+ dev_warn(&mhba->pdev->dev, "unexpected data direction[%d] "
+ "cmd[0x%x]\n", scmd->sc_data_direction, scmd->cmnd[0]);
+ goto error;
+ }
+
+ pframe->cdb_length = scmd->cmd_len;
+ memcpy(pframe->cdb, scmd->cmnd, pframe->cdb_length);
+ pframe->req_function = CL_FUN_SCSI_CMD;
+ if (scsi_bufflen(scmd)) {
+ if (mvumi_make_sgl(mhba, scmd, &pframe->payload[0],
+ &pframe->sg_counts))
+ goto error;
+
+ pframe->data_transfer_length = scsi_bufflen(scmd);
+ } else {
+ pframe->sg_counts = 0;
+ pframe->data_transfer_length = 0;
+ }
+ return 0;
+
+error:
+ scmd->result = (DID_OK << 16) | (DRIVER_SENSE << 24) |
+ SAM_STAT_CHECK_CONDITION;
+ scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
+ 0);
+ return -1;
+}
+
+/**
+ * mvumi_queue_command - Queue entry point
+ * @scmd: SCSI command to be queued
+ * @done: Callback entry point
+ */
+static int mvumi_queue_command(struct Scsi_Host *shost,
+ struct scsi_cmnd *scmd)
+{
+ struct mvumi_cmd *cmd;
+ struct mvumi_hba *mhba;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(shost->host_lock, irq_flags);
+ scsi_cmd_get_serial(shost, scmd);
+
+ mhba = (struct mvumi_hba *) shost->hostdata;
+ scmd->result = 0;
+ cmd = mvumi_get_cmd(mhba);
+ if (unlikely(!cmd)) {
+ spin_unlock_irqrestore(shost->host_lock, irq_flags);
+ return SCSI_MLQUEUE_HOST_BUSY;
+ }
+
+ if (unlikely(mvumi_build_frame(mhba, scmd, cmd)))
+ goto out_return_cmd;
+
+ cmd->scmd = scmd;
+ scmd->SCp.ptr = (char *) cmd;
+ mhba->instancet->fire_cmd(mhba, cmd);
+ spin_unlock_irqrestore(shost->host_lock, irq_flags);
+ return 0;
+
+out_return_cmd:
+ mvumi_return_cmd(mhba, cmd);
+ scmd->scsi_done(scmd);
+ spin_unlock_irqrestore(shost->host_lock, irq_flags);
+ return 0;
+}
+
+static enum blk_eh_timer_return mvumi_timed_out(struct scsi_cmnd *scmd)
+{
+ struct mvumi_cmd *cmd = (struct mvumi_cmd *) scmd->SCp.ptr;
+ struct Scsi_Host *host = scmd->device->host;
+ struct mvumi_hba *mhba = shost_priv(host);
+ unsigned long flags;
+
+ spin_lock_irqsave(mhba->shost->host_lock, flags);
+
+ if (mhba->tag_cmd[cmd->frame->tag]) {
+ mhba->tag_cmd[cmd->frame->tag] = 0;
+ tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
+ }
+ if (!list_empty(&cmd->queue_pointer))
+ list_del_init(&cmd->queue_pointer);
+ else
+ atomic_dec(&mhba->fw_outstanding);
+
+ scmd->result = (DRIVER_INVALID << 24) | (DID_ABORT << 16);
+ scmd->SCp.ptr = NULL;
+ if (scsi_bufflen(scmd)) {
+ if (scsi_sg_count(scmd)) {
+ pci_unmap_sg(mhba->pdev,
+ scsi_sglist(scmd),
+ scsi_sg_count(scmd),
+ (int)scmd->sc_data_direction);
+ } else {
+ pci_unmap_single(mhba->pdev,
+ scmd->SCp.dma_handle,
+ scsi_bufflen(scmd),
+ (int)scmd->sc_data_direction);
+
+ scmd->SCp.dma_handle = 0;
+ }
+ }
+ mvumi_return_cmd(mhba, cmd);
+ spin_unlock_irqrestore(mhba->shost->host_lock, flags);
+
+ return BLK_EH_NOT_HANDLED;
+}
+
+static int
+mvumi_bios_param(struct scsi_device *sdev, struct block_device *bdev,
+ sector_t capacity, int geom[])
+{
+ int heads, sectors;
+ sector_t cylinders;
+ unsigned long tmp;
+
+ heads = 64;
+ sectors = 32;
+ tmp = heads * sectors;
+ cylinders = capacity;
+ sector_div(cylinders, tmp);
+
+ if (capacity >= 0x200000) {
+ heads = 255;
+ sectors = 63;
+ tmp = heads * sectors;
+ cylinders = capacity;
+ sector_div(cylinders, tmp);
+ }
+ geom[0] = heads;
+ geom[1] = sectors;
+ geom[2] = cylinders;
+
+ return 0;
+}
+
+static struct scsi_host_template mvumi_template = {
+
+ .module = THIS_MODULE,
+ .name = "Marvell Storage Controller",
+ .slave_configure = mvumi_slave_configure,
+ .queuecommand = mvumi_queue_command,
+ .eh_host_reset_handler = mvumi_host_reset,
+ .bios_param = mvumi_bios_param,
+ .this_id = -1,
+};
+
+static struct scsi_transport_template mvumi_transport_template = {
+ .eh_timed_out = mvumi_timed_out,
+};
+
+/**
+ * mvumi_init_fw - Initializes the FW
+ * @mhba: Adapter soft state
+ *
+ * This is the main function for initializing firmware.
+ */
+static int mvumi_init_fw(struct mvumi_hba *mhba)
+{
+ int ret = 0;
+
+ if (pci_request_regions(mhba->pdev, MV_DRIVER_NAME)) {
+ dev_err(&mhba->pdev->dev, "IO memory region busy!\n");
+ return -EBUSY;
+ }
+ ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
+ if (ret)
+ goto fail_ioremap;
+
+ mhba->mmio = mhba->base_addr[0];
+
+ switch (mhba->pdev->device) {
+ case PCI_DEVICE_ID_MARVELL_MV9143:
+ mhba->instancet = &mvumi_instance_template;
+ mhba->io_seq = 0;
+ mhba->max_sge = MVUMI_MAX_SG_ENTRY;
+ mhba->request_id_enabled = 1;
+ break;
+ default:
+ dev_err(&mhba->pdev->dev, "device 0x%x not supported!\n",
+ mhba->pdev->device);
+ mhba->instancet = NULL;
+ ret = -EINVAL;
+ goto fail_alloc_mem;
+ }
+ dev_dbg(&mhba->pdev->dev, "device id : %04X is found.\n",
+ mhba->pdev->device);
+
+ mhba->handshake_page = kzalloc(HSP_MAX_SIZE, GFP_KERNEL);
+ if (!mhba->handshake_page) {
+ dev_err(&mhba->pdev->dev,
+ "failed to allocate memory for handshake\n");
+ ret = -ENOMEM;
+ goto fail_alloc_mem;
+ }
+ mhba->handshake_page_phys = virt_to_phys(mhba->handshake_page);
+
+ if (mvumi_start(mhba)) {
+ ret = -EINVAL;
+ goto fail_ready_state;
+ }
+ ret = mvumi_alloc_cmds(mhba);
+ if (ret)
+ goto fail_ready_state;
+
+ return 0;
+
+fail_ready_state:
+ mvumi_release_mem_resource(mhba);
+ kfree(mhba->handshake_page);
+fail_alloc_mem:
+ mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
+fail_ioremap:
+ pci_release_regions(mhba->pdev);
+
+ return ret;
+}
+
+/**
+ * mvumi_io_attach - Attaches this driver to SCSI mid-layer
+ * @mhba: Adapter soft state
+ */
+static int mvumi_io_attach(struct mvumi_hba *mhba)
+{
+ struct Scsi_Host *host = mhba->shost;
+ int ret;
+ unsigned int max_sg = (mhba->ib_max_size + 4 -
+ sizeof(struct mvumi_msg_frame)) / sizeof(struct mvumi_sgl);
+
+ host->irq = mhba->pdev->irq;
+ host->unique_id = mhba->unique_id;
+ host->can_queue = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
+ host->sg_tablesize = mhba->max_sge > max_sg ? max_sg : mhba->max_sge;
+ host->max_sectors = mhba->max_transfer_size / 512;
+ host->cmd_per_lun = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
+ host->max_id = mhba->max_target_id;
+ host->max_cmd_len = MAX_COMMAND_SIZE;
+ host->transportt = &mvumi_transport_template;
+
+ ret = scsi_add_host(host, &mhba->pdev->dev);
+ if (ret) {
+ dev_err(&mhba->pdev->dev, "scsi_add_host failed\n");
+ return ret;
+ }
+ mhba->fw_flag |= MVUMI_FW_ATTACH;
+ scsi_scan_host(host);
+
+ return 0;
+}
+
+/**
+ * mvumi_probe_one - PCI hotplug entry point
+ * @pdev: PCI device structure
+ * @id: PCI ids of supported hotplugged adapter
+ */
+static int __devinit mvumi_probe_one(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct Scsi_Host *host;
+ struct mvumi_hba *mhba;
+ int ret;
+
+ dev_dbg(&pdev->dev, " %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
+ pdev->vendor, pdev->device, pdev->subsystem_vendor,
+ pdev->subsystem_device);
+
+ ret = pci_enable_device(pdev);
+ if (ret)
+ return ret;
+
+ pci_set_master(pdev);
+
+ if (IS_DMA64) {
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (ret) {
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret)
+ goto fail_set_dma_mask;
+ }
+ } else {
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret)
+ goto fail_set_dma_mask;
+ }
+
+ host = scsi_host_alloc(&mvumi_template, sizeof(*mhba));
+ if (!host) {
+ dev_err(&pdev->dev, "scsi_host_alloc failed\n");
+ ret = -ENOMEM;
+ goto fail_alloc_instance;
+ }
+ mhba = shost_priv(host);
+
+ INIT_LIST_HEAD(&mhba->cmd_pool);
+ INIT_LIST_HEAD(&mhba->ob_data_list);
+ INIT_LIST_HEAD(&mhba->free_ob_list);
+ INIT_LIST_HEAD(&mhba->res_list);
+ INIT_LIST_HEAD(&mhba->waiting_req_list);
+ atomic_set(&mhba->fw_outstanding, 0);
+ init_waitqueue_head(&mhba->int_cmd_wait_q);
+
+ mhba->pdev = pdev;
+ mhba->shost = host;
+ mhba->unique_id = pdev->bus->number << 8 | pdev->devfn;
+
+ ret = mvumi_init_fw(mhba);
+ if (ret)
+ goto fail_init_fw;
+
+ ret = request_irq(mhba->pdev->irq, mvumi_isr_handler, IRQF_SHARED,
+ "mvumi", mhba);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register IRQ\n");
+ goto fail_init_irq;
+ }
+ mhba->instancet->enable_intr(mhba->mmio);
+ pci_set_drvdata(pdev, mhba);
+
+ ret = mvumi_io_attach(mhba);
+ if (ret)
+ goto fail_io_attach;
+ dev_dbg(&pdev->dev, "probe mvumi driver successfully.\n");
+
+ return 0;
+
+fail_io_attach:
+ pci_set_drvdata(pdev, NULL);
+ mhba->instancet->disable_intr(mhba->mmio);
+ free_irq(mhba->pdev->irq, mhba);
+fail_init_irq:
+ mvumi_release_fw(mhba);
+fail_init_fw:
+ scsi_host_put(host);
+
+fail_alloc_instance:
+fail_set_dma_mask:
+ pci_disable_device(pdev);
+
+ return ret;
+}
+
+static void mvumi_detach_one(struct pci_dev *pdev)
+{
+ struct Scsi_Host *host;
+ struct mvumi_hba *mhba;
+
+ mhba = pci_get_drvdata(pdev);
+ host = mhba->shost;
+ scsi_remove_host(mhba->shost);
+ mvumi_flush_cache(mhba);
+
+ mhba->instancet->disable_intr(mhba->mmio);
+ free_irq(mhba->pdev->irq, mhba);
+ mvumi_release_fw(mhba);
+ scsi_host_put(host);
+ pci_set_drvdata(pdev, NULL);
+ pci_disable_device(pdev);
+ dev_dbg(&pdev->dev, "driver is removed!\n");
+}
+
+/**
+ * mvumi_shutdown - Shutdown entry point
+ * @device: Generic device structure
+ */
+static void mvumi_shutdown(struct pci_dev *pdev)
+{
+ struct mvumi_hba *mhba = pci_get_drvdata(pdev);
+
+ mvumi_flush_cache(mhba);
+}
+
+static int mvumi_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct mvumi_hba *mhba = NULL;
+
+ mhba = pci_get_drvdata(pdev);
+ mvumi_flush_cache(mhba);
+
+ pci_set_drvdata(pdev, mhba);
+ mhba->instancet->disable_intr(mhba->mmio);
+ free_irq(mhba->pdev->irq, mhba);
+ mvumi_unmap_pci_addr(pdev, mhba->base_addr);
+ pci_release_regions(pdev);
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+static int mvumi_resume(struct pci_dev *pdev)
+{
+ int ret;
+ struct mvumi_hba *mhba = NULL;
+
+ mhba = pci_get_drvdata(pdev);
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_enable_wake(pdev, PCI_D0, 0);
+ pci_restore_state(pdev);
+
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "enable device failed\n");
+ return ret;
+ }
+ pci_set_master(pdev);
+ if (IS_DMA64) {
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (ret) {
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret)
+ goto fail;
+ }
+ } else {
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret)
+ goto fail;
+ }
+ ret = pci_request_regions(mhba->pdev, MV_DRIVER_NAME);
+ if (ret)
+ goto fail;
+ ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
+ if (ret)
+ goto release_regions;
+
+ mhba->mmio = mhba->base_addr[0];
+ mvumi_reset(mhba->mmio);
+
+ if (mvumi_start(mhba)) {
+ ret = -EINVAL;
+ goto unmap_pci_addr;
+ }
+
+ ret = request_irq(mhba->pdev->irq, mvumi_isr_handler, IRQF_SHARED,
+ "mvumi", mhba);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register IRQ\n");
+ goto unmap_pci_addr;
+ }
+ mhba->instancet->enable_intr(mhba->mmio);
+
+ return 0;
+
+unmap_pci_addr:
+ mvumi_unmap_pci_addr(pdev, mhba->base_addr);
+release_regions:
+ pci_release_regions(pdev);
+fail:
+ pci_disable_device(pdev);
+
+ return ret;
+}
+
+static struct pci_driver mvumi_pci_driver = {
+
+ .name = MV_DRIVER_NAME,
+ .id_table = mvumi_pci_table,
+ .probe = mvumi_probe_one,
+ .remove = __devexit_p(mvumi_detach_one),
+ .shutdown = mvumi_shutdown,
+#ifdef CONFIG_PM
+ .suspend = mvumi_suspend,
+ .resume = mvumi_resume,
+#endif
+};
+
+/**
+ * mvumi_init - Driver load entry point
+ */
+static int __init mvumi_init(void)
+{
+ return pci_register_driver(&mvumi_pci_driver);
+}
+
+/**
+ * mvumi_exit - Driver unload entry point
+ */
+static void __exit mvumi_exit(void)
+{
+
+ pci_unregister_driver(&mvumi_pci_driver);
+}
+
+module_init(mvumi_init);
+module_exit(mvumi_exit);
projects / kernel / kernel-generic.git / commitdiff