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Message-ID: <CAF+Ar0kSQBP2RvYu7xFA_RZ61FbfK=aq_i4XJcOPw+rXOS7PwA@mail.gmail.com>
Date: Mon, 15 Aug 2011 19:10:37 +0800
From: li jianyun <jianyunff@...il.com>
To: JBottomley@...allels.com
Cc: "open list:SCSI SUBSYSTEM" <linux-scsi@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>, jfeng@...vell.com
Subject: Re: [PATCH v3] Add Marvell UMI driver
Hi all
thanks for you help.
Hi James
please verify this patch, thanks
2011/6/14 li jianyun <jianyunff@...il.com>:
> Hi all
> any comment or suggesting for this patch?
>
>
> 2011/5/11 <jianyunff@...il.com>:
>> From: Jianyun Li <jyli@...vell.com>
>>
>> The Marvell Universal Message Interface (UMI) defines a messaging
>> interface between host and Marvell products (Plato, for example). It
>> considers situations of limited system resource and optimized system
>> performance.
>> UMI driver translates host request to message and sends message
>> to FW via UMI, FW receives message and processes it, then sends response
>> to UMI driver.
>> FW generates an interrupt when it needs to send information or
>> response to UMI driver
>>
>> Signed-off-by: Jianyun Li <jyli@...vell.com>
>> ---
>> drivers/scsi/Kconfig | 9 +
>> drivers/scsi/Makefile | 1 +
>> drivers/scsi/mvumi.c | 2018 +++++++++++++++++++++++++++++++++++++++++++++++++
>> drivers/scsi/mvumi.h | 505 ++++++++++++
>> 4 files changed, 2533 insertions(+), 0 deletions(-)
>> create mode 100644 drivers/scsi/mvumi.c
>> create mode 100644 drivers/scsi/mvumi.h
>>
>> diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
>> index 4a1f029..181ea6c 100644
>> --- a/drivers/scsi/Kconfig
>> +++ b/drivers/scsi/Kconfig
>> @@ -559,6 +559,15 @@ source "drivers/scsi/aic7xxx/Kconfig.aic79xx"
>> source "drivers/scsi/aic94xx/Kconfig"
>> source "drivers/scsi/mvsas/Kconfig"
>>
>> +config SCSI_MVUMI
>> + tristate "Marvell UMI driver"
>> + depends on SCSI && PCI
>> + help
>> + Module for Marvell Universal Message Interface(UMI) driver
>> +
>> + To compile this driver as a module, choose M here: the
>> + module will be called mvumi.
>> +
>> config SCSI_DPT_I2O
>> tristate "Adaptec I2O RAID support "
>> depends on SCSI && PCI && VIRT_TO_BUS
>> diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
>> index 7ad0b8a..bce1609 100644
>> --- a/drivers/scsi/Makefile
>> +++ b/drivers/scsi/Makefile
>> @@ -133,6 +133,7 @@ obj-$(CONFIG_SCSI_IBMVFC) += ibmvscsi/
>> obj-$(CONFIG_SCSI_HPTIOP) += hptiop.o
>> obj-$(CONFIG_SCSI_STEX) += stex.o
>> obj-$(CONFIG_SCSI_MVSAS) += mvsas/
>> +obj-$(CONFIG_SCSI_MVUMI) += mvumi.o
>> obj-$(CONFIG_PS3_ROM) += ps3rom.o
>> obj-$(CONFIG_SCSI_CXGB3_ISCSI) += libiscsi.o libiscsi_tcp.o cxgbi/
>> obj-$(CONFIG_SCSI_CXGB4_ISCSI) += libiscsi.o libiscsi_tcp.o cxgbi/
>> diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c
>> new file mode 100644
>> index 0000000..88cf1db
>> --- /dev/null
>> +++ b/drivers/scsi/mvumi.c
>> @@ -0,0 +1,2018 @@
>> +/*
>> + * Marvell UMI driver
>> + *
>> + * Copyright 2011 Marvell. <jyli@...vell.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@...vell.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);
>> diff --git a/drivers/scsi/mvumi.h b/drivers/scsi/mvumi.h
>> new file mode 100644
>> index 0000000..10b9237
>> --- /dev/null
>> +++ b/drivers/scsi/mvumi.h
>> @@ -0,0 +1,505 @@
>> +/*
>> + * Marvell UMI head file
>> + *
>> + * Copyright 2011 Marvell. <jyli@...vell.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
>> + */
>> +
>> +#ifndef MVUMI_H
>> +#define MVUMI_H
>> +
>> +#define MAX_BASE_ADDRESS 6
>> +
>> +#define VER_MAJOR 1
>> +#define VER_MINOR 1
>> +#define VER_OEM 0
>> +#define VER_BUILD 1500
>> +
>> +#define MV_DRIVER_NAME "mvumi"
>> +#define PCI_VENDOR_ID_MARVELL_2 0x1b4b
>> +#define PCI_DEVICE_ID_MARVELL_MV9143 0x9143
>> +
>> +#define MVUMI_INTERNAL_CMD_WAIT_TIME 45
>> +
>> +#define IS_DMA64 (sizeof(dma_addr_t) == 8)
>> +
>> +enum mvumi_qc_result {
>> + MV_QUEUE_COMMAND_RESULT_SENT = 0,
>> + MV_QUEUE_COMMAND_RESULT_NO_RESOURCE,
>> +};
>> +
>> +enum {
>> + /*******************************************/
>> +
>> + /* ARM Mbus Registers Map */
>> +
>> + /*******************************************/
>> + CPU_MAIN_INT_CAUSE_REG = 0x20200,
>> + CPU_MAIN_IRQ_MASK_REG = 0x20204,
>> + CPU_MAIN_FIQ_MASK_REG = 0x20208,
>> + CPU_ENPOINTA_MASK_REG = 0x2020C,
>> + CPU_ENPOINTB_MASK_REG = 0x20210,
>> +
>> + INT_MAP_COMAERR = 1 << 6,
>> + INT_MAP_COMAIN = 1 << 7,
>> + INT_MAP_COMAOUT = 1 << 8,
>> + INT_MAP_COMBERR = 1 << 9,
>> + INT_MAP_COMBIN = 1 << 10,
>> + INT_MAP_COMBOUT = 1 << 11,
>> +
>> + INT_MAP_COMAINT = (INT_MAP_COMAOUT | INT_MAP_COMAERR),
>> + INT_MAP_COMBINT = (INT_MAP_COMBOUT | INT_MAP_COMBIN | INT_MAP_COMBERR),
>> +
>> + INT_MAP_DL_PCIEA2CPU = 1 << 0,
>> + INT_MAP_DL_CPU2PCIEA = 1 << 1,
>> +
>> + /***************************************/
>> +
>> + /* ARM Doorbell Registers Map */
>> +
>> + /***************************************/
>> + CPU_PCIEA_TO_ARM_DRBL_REG = 0x20400,
>> + CPU_PCIEA_TO_ARM_MASK_REG = 0x20404,
>> + CPU_ARM_TO_PCIEA_DRBL_REG = 0x20408,
>> + CPU_ARM_TO_PCIEA_MASK_REG = 0x2040C,
>> +
>> + DRBL_HANDSHAKE = 1 << 0,
>> + DRBL_SOFT_RESET = 1 << 1,
>> + DRBL_BUS_CHANGE = 1 << 2,
>> + DRBL_EVENT_NOTIFY = 1 << 3,
>> + DRBL_MU_RESET = 1 << 4,
>> + DRBL_HANDSHAKE_ISR = DRBL_HANDSHAKE,
>> +
>> + CPU_PCIEA_TO_ARM_MSG0 = 0x20430,
>> + CPU_PCIEA_TO_ARM_MSG1 = 0x20434,
>> + CPU_ARM_TO_PCIEA_MSG0 = 0x20438,
>> + CPU_ARM_TO_PCIEA_MSG1 = 0x2043C,
>> +
>> + /*******************************************/
>> +
>> + /* ARM Communication List Registers Map */
>> +
>> + /*******************************************/
>> + CLA_INB_LIST_BASEL = 0x500,
>> + CLA_INB_LIST_BASEH = 0x504,
>> + CLA_INB_AVAL_COUNT_BASEL = 0x508,
>> + CLA_INB_AVAL_COUNT_BASEH = 0x50C,
>> + CLA_INB_DESTI_LIST_BASEL = 0x510,
>> + CLA_INB_DESTI_LIST_BASEH = 0x514,
>> + CLA_INB_WRITE_POINTER = 0x518,
>> + CLA_INB_READ_POINTER = 0x51C,
>> +
>> + CLA_OUTB_LIST_BASEL = 0x530,
>> + CLA_OUTB_LIST_BASEH = 0x534,
>> + CLA_OUTB_SOURCE_LIST_BASEL = 0x538,
>> + CLA_OUTB_SOURCE_LIST_BASEH = 0x53C,
>> + CLA_OUTB_COPY_POINTER = 0x544,
>> + CLA_OUTB_READ_POINTER = 0x548,
>> +
>> + CLA_ISR_CAUSE = 0x560,
>> + CLA_ISR_MASK = 0x564,
>> +
>> + INT_MAP_MU = (INT_MAP_DL_CPU2PCIEA | INT_MAP_COMAINT),
>> +
>> + CL_POINTER_TOGGLE = 1 << 12,
>> +
>> + CLIC_IN_IRQ = 1 << 0,
>> + CLIC_OUT_IRQ = 1 << 1,
>> + CLIC_IN_ERR_IRQ = 1 << 8,
>> + CLIC_OUT_ERR_IRQ = 1 << 12,
>> +
>> + CL_SLOT_NUM_MASK = 0xFFF,
>> +
>> + /*
>> + * Command flag is the flag for the CDB command itself
>> + */
>> + /* 1-non data; 0-data command */
>> + CMD_FLAG_NON_DATA = 1 << 0,
>> + CMD_FLAG_DMA = 1 << 1,
>> + CMD_FLAG_PIO = 1 << 2,
>> + /* 1-host read data */
>> + CMD_FLAG_DATA_IN = 1 << 3,
>> + /* 1-host write data */
>> + CMD_FLAG_DATA_OUT = 1 << 4,
>> +
>> + SCSI_CMD_MARVELL_SPECIFIC = 0xE1,
>> + CDB_CORE_SHUTDOWN = 0xB,
>> +};
>> +
>> +#define APICDB0_EVENT 0xF4
>> +#define APICDB1_EVENT_GETEVENT 0
>> +#define MAX_EVENTS_RETURNED 6
>> +
>> +struct mvumi_driver_event {
>> + u32 time_stamp;
>> + u32 sequence_no;
>> + u32 event_id;
>> + u8 severity;
>> + u8 param_count;
>> + u16 device_id;
>> + u32 params[4];
>> + u8 sense_data_length;
>> + u8 Reserved1;
>> + u8 sense_data[30];
>> +};
>> +
>> +struct mvumi_event_req {
>> + unsigned char count;
>> + unsigned char reserved[3];
>> + struct mvumi_driver_event events[MAX_EVENTS_RETURNED];
>> +};
>> +
>> +struct mvumi_events_wq {
>> + struct work_struct work_q;
>> + struct mvumi_hba *mhba;
>> + unsigned int event;
>> + void *param;
>> +};
>> +
>> +#define MVUMI_MAX_SG_ENTRY 32
>> +#define SGD_EOT (1L << 27)
>> +
>> +struct mvumi_sgl {
>> + u32 baseaddr_l;
>> + u32 baseaddr_h;
>> + u32 flags;
>> + u32 size;
>> +};
>> +
>> +struct mvumi_res {
>> + struct list_head entry;
>> + dma_addr_t bus_addr;
>> + void *virt_addr;
>> + unsigned int size;
>> + unsigned short type; /* enum Resource_Type */
>> +};
>> +
>> +/* Resource type */
>> +enum resource_type {
>> + RESOURCE_CACHED_MEMORY = 0,
>> + RESOURCE_UNCACHED_MEMORY
>> +};
>> +
>> +struct mvumi_sense_data {
>> + u8 error_eode:7;
>> + u8 valid:1;
>> + u8 segment_number;
>> + u8 sense_key:4;
>> + u8 reserved:1;
>> + u8 incorrect_length:1;
>> + u8 end_of_media:1;
>> + u8 file_mark:1;
>> + u8 information[4];
>> + u8 additional_sense_length;
>> + u8 command_specific_information[4];
>> + u8 additional_sense_code;
>> + u8 additional_sense_code_qualifier;
>> + u8 field_replaceable_unit_code;
>> + u8 sense_key_specific[3];
>> +};
>> +
>> +/* Request initiator must set the status to REQ_STATUS_PENDING. */
>> +#define REQ_STATUS_PENDING 0x80
>> +
>> +struct mvumi_cmd {
>> + struct list_head queue_pointer;
>> + struct mvumi_msg_frame *frame;
>> + struct scsi_cmnd *scmd;
>> + atomic_t sync_cmd;
>> + void *data_buf;
>> + unsigned short request_id;
>> + unsigned char cmd_status;
>> +};
>> +
>> +/*
>> + * the function type of the in bound frame
>> + */
>> +#define CL_FUN_SCSI_CMD 0x1
>> +
>> +struct mvumi_msg_frame {
>> + u16 device_id;
>> + u16 tag;
>> + u8 cmd_flag;
>> + u8 req_function;
>> + u8 cdb_length;
>> + u8 sg_counts;
>> + u32 data_transfer_length;
>> + u16 request_id;
>> + u16 reserved1;
>> + u8 cdb[MAX_COMMAND_SIZE];
>> + u32 payload[1];
>> +};
>> +
>> +/*
>> + * the respond flag for data_payload of the out bound frame
>> + */
>> +#define CL_RSP_FLAG_NODATA 0x0
>> +#define CL_RSP_FLAG_SENSEDATA 0x1
>> +
>> +struct mvumi_rsp_frame {
>> + u16 device_id;
>> + u16 tag;
>> + u8 req_status;
>> + u8 rsp_flag; /* Indicates the type of Data_Payload.*/
>> + u16 request_id;
>> + u32 payload[1];
>> +};
>> +
>> +struct mvumi_ob_data {
>> + struct list_head list;
>> + unsigned char data[0];
>> +};
>> +
>> +struct version_info {
>> + u32 ver_major;
>> + u32 ver_minor;
>> + u32 ver_oem;
>> + u32 ver_build;
>> +};
>> +
>> +#define FW_MAX_DELAY 30
>> +#define MVUMI_FW_BUSY (1U << 0)
>> +#define MVUMI_FW_ATTACH (1U << 1)
>> +#define MVUMI_FW_ALLOC (1U << 2)
>> +
>> +/*
>> + * State is the state of the MU
>> + */
>> +#define FW_STATE_IDLE 0
>> +#define FW_STATE_STARTING 1
>> +#define FW_STATE_HANDSHAKING 2
>> +#define FW_STATE_STARTED 3
>> +#define FW_STATE_ABORT 4
>> +
>> +#define HANDSHAKE_SIGNATURE 0x5A5A5A5AL
>> +#define HANDSHAKE_READYSTATE 0x55AA5AA5L
>> +#define HANDSHAKE_DONESTATE 0x55AAA55AL
>> +
>> +/* HandShake Status definition */
>> +#define HS_STATUS_OK 1
>> +#define HS_STATUS_ERR 2
>> +#define HS_STATUS_INVALID 3
>> +
>> +/* HandShake State/Cmd definition */
>> +#define HS_S_START 1
>> +#define HS_S_RESET 2
>> +#define HS_S_PAGE_ADDR 3
>> +#define HS_S_QUERY_PAGE 4
>> +#define HS_S_SEND_PAGE 5
>> +#define HS_S_END 6
>> +#define HS_S_ABORT 7
>> +#define HS_PAGE_VERIFY_SIZE 128
>> +
>> +#define HS_GET_STATE(a) (a & 0xFFFF)
>> +#define HS_GET_STATUS(a) ((a & 0xFFFF0000) >> 16)
>> +#define HS_SET_STATE(a, b) (a |= (b & 0xFFFF))
>> +#define HS_SET_STATUS(a, b) (a |= ((b & 0xFFFF) << 16))
>> +
>> +/* handshake frame */
>> +struct mvumi_hs_frame {
>> + u16 size;
>> + /* host information */
>> + u8 host_type;
>> + u8 reserved_1[1];
>> + struct version_info host_ver; /* bios or driver version */
>> +
>> + /* controller information */
>> + u32 system_io_bus;
>> + u32 slot_number;
>> + u32 intr_level;
>> + u32 intr_vector;
>> +
>> + /* communication list configuration */
>> + u32 ib_baseaddr_l;
>> + u32 ib_baseaddr_h;
>> + u32 ob_baseaddr_l;
>> + u32 ob_baseaddr_h;
>> +
>> + u8 ib_entry_size;
>> + u8 ob_entry_size;
>> + u8 ob_depth;
>> + u8 ib_depth;
>> +
>> + /* system time */
>> + u64 seconds_since1970;
>> +};
>> +
>> +struct mvumi_hs_header {
>> + u8 page_code;
>> + u8 checksum;
>> + u16 frame_length;
>> + u32 frame_content[1];
>> +};
>> +
>> +/*
>> + * the page code type of the handshake header
>> + */
>> +#define HS_PAGE_FIRM_CAP 0x1
>> +#define HS_PAGE_HOST_INFO 0x2
>> +#define HS_PAGE_FIRM_CTL 0x3
>> +#define HS_PAGE_CL_INFO 0x4
>> +#define HS_PAGE_TOTAL 0x5
>> +
>> +#define HSP_SIZE(i) sizeof(struct mvumi_hs_page##i)
>> +
>> +#define HSP_MAX_SIZE ({ \
>> + int size, m1, m2; \
>> + m1 = max(HSP_SIZE(1), HSP_SIZE(3)); \
>> + m2 = max(HSP_SIZE(2), HSP_SIZE(4)); \
>> + size = max(m1, m2); \
>> + size; \
>> +})
>> +
>> +/* The format of the page code for Firmware capability */
>> +struct mvumi_hs_page1 {
>> + u8 pagecode;
>> + u8 checksum;
>> + u16 frame_length;
>> +
>> + u16 number_of_ports;
>> + u16 max_devices_support;
>> + u16 max_io_support;
>> + u16 umi_ver;
>> + u32 max_transfer_size;
>> + struct version_info fw_ver;
>> + u8 cl_in_max_entry_size;
>> + u8 cl_out_max_entry_size;
>> + u8 cl_inout_list_depth;
>> + u8 total_pages;
>> + u16 capability;
>> + u16 reserved1;
>> +};
>> +
>> +/* The format of the page code for Host information */
>> +struct mvumi_hs_page2 {
>> + u8 pagecode;
>> + u8 checksum;
>> + u16 frame_length;
>> +
>> + u8 host_type;
>> + u8 reserved[3];
>> + struct version_info host_ver;
>> + u32 system_io_bus;
>> + u32 slot_number;
>> + u32 intr_level;
>> + u32 intr_vector;
>> + u64 seconds_since1970;
>> +};
>> +
>> +/* The format of the page code for firmware control */
>> +struct mvumi_hs_page3 {
>> + u8 pagecode;
>> + u8 checksum;
>> + u16 frame_length;
>> + u16 control;
>> + u8 reserved[2];
>> + u32 host_bufferaddr_l;
>> + u32 host_bufferaddr_h;
>> + u32 host_eventaddr_l;
>> + u32 host_eventaddr_h;
>> +};
>> +
>> +struct mvumi_hs_page4 {
>> + u8 pagecode;
>> + u8 checksum;
>> + u16 frame_length;
>> + u32 ib_baseaddr_l;
>> + u32 ib_baseaddr_h;
>> + u32 ob_baseaddr_l;
>> + u32 ob_baseaddr_h;
>> + u8 ib_entry_size;
>> + u8 ob_entry_size;
>> + u8 ob_depth;
>> + u8 ib_depth;
>> +};
>> +
>> +struct mvumi_tag {
>> + unsigned short *stack;
>> + unsigned short top;
>> + unsigned short size;
>> +};
>> +
>> +struct mvumi_hba {
>> + void *base_addr[MAX_BASE_ADDRESS];
>> + void *mmio;
>> + struct list_head cmd_pool;
>> + struct Scsi_Host *shost;
>> + wait_queue_head_t int_cmd_wait_q;
>> + struct pci_dev *pdev;
>> + unsigned int unique_id;
>> + atomic_t fw_outstanding;
>> + struct mvumi_instance_template *instancet;
>> +
>> + void *ib_list;
>> + dma_addr_t ib_list_phys;
>> +
>> + void *ob_list;
>> + dma_addr_t ob_list_phys;
>> +
>> + void *ib_shadow;
>> + dma_addr_t ib_shadow_phys;
>> +
>> + void *ob_shadow;
>> + dma_addr_t ob_shadow_phys;
>> +
>> + void *handshake_page;
>> + dma_addr_t handshake_page_phys;
>> +
>> + unsigned int global_isr;
>> + unsigned int isr_status;
>> +
>> + unsigned short max_sge;
>> + unsigned short max_target_id;
>> + unsigned char *target_map;
>> + unsigned int max_io;
>> + unsigned int list_num_io;
>> + unsigned int ib_max_size;
>> + unsigned int ob_max_size;
>> + unsigned int ib_max_size_setting;
>> + unsigned int ob_max_size_setting;
>> + unsigned int max_transfer_size;
>> + unsigned char hba_total_pages;
>> + unsigned char fw_flag;
>> + unsigned char request_id_enabled;
>> + unsigned short hba_capability;
>> + unsigned short io_seq;
>> +
>> + unsigned int ib_cur_slot;
>> + unsigned int ob_cur_slot;
>> + unsigned int fw_state;
>> +
>> + struct list_head ob_data_list;
>> + struct list_head free_ob_list;
>> + struct list_head res_list;
>> + struct list_head waiting_req_list;
>> +
>> + struct mvumi_tag tag_pool;
>> + struct mvumi_cmd **tag_cmd;
>> +};
>> +
>> +struct mvumi_instance_template {
>> + void (*fire_cmd)(struct mvumi_hba *, struct mvumi_cmd *);
>> + void (*enable_intr)(void *) ;
>> + void (*disable_intr)(void *);
>> + int (*clear_intr)(void *);
>> + unsigned int (*read_fw_status_reg)(void *);
>> +};
>> +
>> +extern struct timezone sys_tz;
>> +#endif
>> --
>> 1.7.4.4
>>
>>
>
--
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