[SCSI] arcmsr: initial driver, version 1.20.00.13
arcmsr is a driver for the Areca Raid controller, a host based RAID
subsystem that speaks SCSI at the firmware level.
This patch is quite a clean up over the initial submission with
contributions from:
Randy Dunlap <rdunlap@xenotime.net>
Christoph Hellwig <hch@lst.de>
Matthew Wilcox <matthew@wil.cx>
Adrian Bunk <bunk@stusta.de>
Signed-off-by: Erich Chen <erich@areca.com.tw>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
new file mode 100644
index 0000000..475f978
--- /dev/null
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -0,0 +1,1496 @@
+/*
+*******************************************************************************
+** O.S : Linux
+** FILE NAME : arcmsr_hba.c
+** BY : Erich Chen
+** Description: SCSI RAID Device Driver for
+** ARECA RAID Host adapter
+*******************************************************************************
+** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
+**
+** Web site: www.areca.com.tw
+** E-mail: erich@areca.com.tw
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License version 2 as
+** published by the Free Software Foundation.
+** 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.
+*******************************************************************************
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions
+** are met:
+** 1. Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in the
+** documentation and/or other materials provided with the distribution.
+** 3. The name of the author may not be used to endorse or promote products
+** derived from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************
+** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
+** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
+*******************************************************************************
+*/
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/spinlock.h>
+#include <linux/pci_ids.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/timer.h>
+#include <linux/pci.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsicam.h>
+#include "arcmsr.h"
+
+MODULE_AUTHOR("Erich Chen <erich@areca.com.tw>");
+MODULE_DESCRIPTION("ARECA (ARC11xx/12xx) SATA RAID HOST Adapter");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(ARCMSR_DRIVER_VERSION);
+
+static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd);
+static int arcmsr_abort(struct scsi_cmnd *);
+static int arcmsr_bus_reset(struct scsi_cmnd *);
+static int arcmsr_bios_param(struct scsi_device *sdev,
+ struct block_device *bdev, sector_t capacity, int *info);
+static int arcmsr_queue_command(struct scsi_cmnd * cmd,
+ void (*done) (struct scsi_cmnd *));
+static int arcmsr_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id);
+static void arcmsr_remove(struct pci_dev *pdev);
+static void arcmsr_shutdown(struct pci_dev *pdev);
+static void arcmsr_iop_init(struct AdapterControlBlock *acb);
+static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
+static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
+static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb);
+static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb);
+static const char *arcmsr_info(struct Scsi_Host *);
+static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
+
+static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
+{
+ if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
+ queue_depth = ARCMSR_MAX_CMD_PERLUN;
+ scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
+ return queue_depth;
+}
+
+static struct scsi_host_template arcmsr_scsi_host_template = {
+ .module = THIS_MODULE,
+ .name = "ARCMSR ARECA SATA RAID HOST Adapter" ARCMSR_DRIVER_VERSION,
+ .info = arcmsr_info,
+ .queuecommand = arcmsr_queue_command,
+ .eh_abort_handler = arcmsr_abort,
+ .eh_bus_reset_handler = arcmsr_bus_reset,
+ .bios_param = arcmsr_bios_param,
+ .change_queue_depth = arcmsr_adjust_disk_queue_depth,
+ .can_queue = ARCMSR_MAX_OUTSTANDING_CMD,
+ .this_id = ARCMSR_SCSI_INITIATOR_ID,
+ .sg_tablesize = ARCMSR_MAX_SG_ENTRIES,
+ .max_sectors = ARCMSR_MAX_XFER_SECTORS,
+ .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN,
+ .use_clustering = ENABLE_CLUSTERING,
+ .shost_attrs = arcmsr_host_attrs,
+};
+
+static struct pci_device_id arcmsr_device_id_table[] = {
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
+ {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
+ {0, 0}, /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
+static struct pci_driver arcmsr_pci_driver = {
+ .name = "arcmsr",
+ .id_table = arcmsr_device_id_table,
+ .probe = arcmsr_probe,
+ .remove = arcmsr_remove,
+ .shutdown = arcmsr_shutdown
+};
+
+static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ irqreturn_t handle_state;
+ struct AdapterControlBlock *acb;
+ unsigned long flags;
+
+ acb = (struct AdapterControlBlock *)dev_id;
+
+ spin_lock_irqsave(acb->host->host_lock, flags);
+ handle_state = arcmsr_interrupt(acb);
+ spin_unlock_irqrestore(acb->host->host_lock, flags);
+ return handle_state;
+}
+
+static int arcmsr_bios_param(struct scsi_device *sdev,
+ struct block_device *bdev, sector_t capacity, int *geom)
+{
+ int ret, heads, sectors, cylinders, total_capacity;
+ unsigned char *buffer;/* return copy of block device's partition table */
+
+ buffer = scsi_bios_ptable(bdev);
+ if (buffer) {
+ ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
+ kfree(buffer);
+ if (ret != -1)
+ return ret;
+ }
+ total_capacity = capacity;
+ heads = 64;
+ sectors = 32;
+ cylinders = total_capacity / (heads * sectors);
+ if (cylinders > 1024) {
+ heads = 255;
+ sectors = 63;
+ cylinders = total_capacity / (heads * sectors);
+ }
+ geom[0] = heads;
+ geom[1] = sectors;
+ geom[2] = cylinders;
+ return 0;
+}
+
+static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
+{
+ struct pci_dev *pdev = acb->pdev;
+ struct MessageUnit __iomem *reg = acb->pmu;
+ u32 ccb_phyaddr_hi32;
+ void *dma_coherent;
+ dma_addr_t dma_coherent_handle, dma_addr;
+ struct CommandControlBlock *ccb_tmp;
+ int i, j;
+
+ dma_coherent = dma_alloc_coherent(&pdev->dev,
+ ARCMSR_MAX_FREECCB_NUM *
+ sizeof (struct CommandControlBlock) + 0x20,
+ &dma_coherent_handle, GFP_KERNEL);
+ if (!dma_coherent)
+ return -ENOMEM;
+
+ acb->dma_coherent = dma_coherent;
+ acb->dma_coherent_handle = dma_coherent_handle;
+
+ if (((unsigned long)dma_coherent & 0x1F)) {
+ dma_coherent = dma_coherent +
+ (0x20 - ((unsigned long)dma_coherent & 0x1F));
+ dma_coherent_handle = dma_coherent_handle +
+ (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
+ }
+
+ dma_addr = dma_coherent_handle;
+ ccb_tmp = (struct CommandControlBlock *)dma_coherent;
+ for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
+ ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
+ ccb_tmp->acb = acb;
+ acb->pccb_pool[i] = ccb_tmp;
+ list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
+ dma_addr = dma_addr + sizeof (struct CommandControlBlock);
+ ccb_tmp++;
+ }
+
+ acb->vir2phy_offset = (unsigned long)ccb_tmp -
+ (unsigned long)dma_addr;
+ for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
+ for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
+ acb->devstate[i][j] = ARECA_RAID_GOOD;
+
+ /*
+ ** here we need to tell iop 331 our ccb_tmp.HighPart
+ ** if ccb_tmp.HighPart is not zero
+ */
+ ccb_phyaddr_hi32 = (uint32_t) ((dma_coherent_handle >> 16) >> 16);
+ if (ccb_phyaddr_hi32 != 0) {
+ writel(ARCMSR_SIGNATURE_SET_CONFIG, ®->message_rwbuffer[0]);
+ writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]);
+ writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, ®->inbound_msgaddr0);
+ if (arcmsr_wait_msgint_ready(acb))
+ printk(KERN_NOTICE "arcmsr%d: "
+ "'set ccb high part physical address' timeout\n",
+ acb->host->host_no);
+ }
+
+ writel(readl(®->outbound_intmask) |
+ ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
+ ®->outbound_intmask);
+ return 0;
+}
+
+static int arcmsr_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct Scsi_Host *host;
+ struct AdapterControlBlock *acb;
+ uint8_t bus, dev_fun;
+ int error;
+
+ error = pci_enable_device(pdev);
+ if (error)
+ goto out;
+ pci_set_master(pdev);
+
+ host = scsi_host_alloc(&arcmsr_scsi_host_template,
+ sizeof(struct AdapterControlBlock));
+ if (!host) {
+ error = -ENOMEM;
+ goto out_disable_device;
+ }
+ acb = (struct AdapterControlBlock *)host->hostdata;
+ memset(acb, 0, sizeof (struct AdapterControlBlock));
+
+ error = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
+ if (error) {
+ error = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+ if (error) {
+ printk(KERN_WARNING
+ "scsi%d: No suitable DMA mask available\n",
+ host->host_no);
+ goto out_host_put;
+ }
+ }
+ bus = pdev->bus->number;
+ dev_fun = pdev->devfn;
+ acb->host = host;
+ acb->pdev = pdev;
+ host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
+ host->max_lun = ARCMSR_MAX_TARGETLUN;
+ host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
+ host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/
+ host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
+ host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
+ host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
+ host->this_id = ARCMSR_SCSI_INITIATOR_ID;
+ host->unique_id = (bus << 8) | dev_fun;
+ host->irq = pdev->irq;
+ error = pci_request_regions(pdev, "arcmsr");
+ if (error)
+ goto out_host_put;
+
+ acb->pmu = ioremap(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+ if (!acb->pmu) {
+ printk(KERN_NOTICE "arcmsr%d: memory"
+ " mapping region fail \n", acb->host->host_no);
+ goto out_release_regions;
+ }
+ acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
+ ACB_F_MESSAGE_RQBUFFER_CLEARED |
+ ACB_F_MESSAGE_WQBUFFER_READED);
+ acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
+ INIT_LIST_HEAD(&acb->ccb_free_list);
+
+ error = arcmsr_alloc_ccb_pool(acb);
+ if (error)
+ goto out_iounmap;
+
+ error = request_irq(pdev->irq, arcmsr_do_interrupt,
+ SA_INTERRUPT | SA_SHIRQ, "arcmsr", acb);
+ if (error)
+ goto out_free_ccb_pool;
+
+ arcmsr_iop_init(acb);
+ pci_set_drvdata(pdev, host);
+
+ error = scsi_add_host(host, &pdev->dev);
+ if (error)
+ goto out_free_irq;
+
+ error = arcmsr_alloc_sysfs_attr(acb);
+ if (error)
+ goto out_free_sysfs;
+
+ scsi_scan_host(host);
+ return 0;
+ out_free_sysfs:
+ out_free_irq:
+ free_irq(pdev->irq, acb);
+ out_free_ccb_pool:
+ arcmsr_free_ccb_pool(acb);
+ out_iounmap:
+ iounmap(acb->pmu);
+ out_release_regions:
+ pci_release_regions(pdev);
+ out_host_put:
+ scsi_host_put(host);
+ out_disable_device:
+ pci_disable_device(pdev);
+ out:
+ return error;
+}
+
+static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+
+ writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0);
+ if (arcmsr_wait_msgint_ready(acb))
+ printk(KERN_NOTICE
+ "arcmsr%d: wait 'abort all outstanding command' timeout \n"
+ , acb->host->host_no);
+}
+
+static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
+{
+ struct AdapterControlBlock *acb = ccb->acb;
+ struct scsi_cmnd *pcmd = ccb->pcmd;
+
+ if (pcmd->use_sg != 0) {
+ struct scatterlist *sl;
+
+ sl = (struct scatterlist *)pcmd->request_buffer;
+ pci_unmap_sg(acb->pdev, sl, pcmd->use_sg, pcmd->sc_data_direction);
+ }
+ else if (pcmd->request_bufflen != 0)
+ pci_unmap_single(acb->pdev,
+ pcmd->SCp.dma_handle,
+ pcmd->request_bufflen, pcmd->sc_data_direction);
+}
+
+static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
+{
+ struct AdapterControlBlock *acb = ccb->acb;
+ struct scsi_cmnd *pcmd = ccb->pcmd;
+
+ arcmsr_pci_unmap_dma(ccb);
+ if (stand_flag == 1)
+ atomic_dec(&acb->ccboutstandingcount);
+ ccb->startdone = ARCMSR_CCB_DONE;
+ ccb->ccb_flags = 0;
+ list_add_tail(&ccb->list, &acb->ccb_free_list);
+ pcmd->scsi_done(pcmd);
+}
+
+static void arcmsr_remove(struct pci_dev *pdev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ struct AdapterControlBlock *acb =
+ (struct AdapterControlBlock *) host->hostdata;
+ struct MessageUnit __iomem *reg = acb->pmu;
+ int poll_count = 0;
+
+ arcmsr_free_sysfs_attr(acb);
+ scsi_remove_host(host);
+ arcmsr_stop_adapter_bgrb(acb);
+ arcmsr_flush_adapter_cache(acb);
+ writel(readl(®->outbound_intmask) |
+ ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
+ ®->outbound_intmask);
+ acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
+ acb->acb_flags &= ~ACB_F_IOP_INITED;
+
+ for (poll_count = 0; poll_count < 256; poll_count++) {
+ if (!atomic_read(&acb->ccboutstandingcount))
+ break;
+ arcmsr_interrupt(acb);
+ msleep(25);
+ }
+
+ if (atomic_read(&acb->ccboutstandingcount)) {
+ int i;
+
+ arcmsr_abort_allcmd(acb);
+ for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
+ readl(®->outbound_queueport);
+ for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
+ struct CommandControlBlock *ccb = acb->pccb_pool[i];
+ if (ccb->startdone == ARCMSR_CCB_START) {
+ ccb->startdone = ARCMSR_CCB_ABORTED;
+ ccb->pcmd->result = DID_ABORT << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ }
+ }
+
+ free_irq(pdev->irq, acb);
+ iounmap(acb->pmu);
+ arcmsr_free_ccb_pool(acb);
+ pci_release_regions(pdev);
+
+ scsi_host_put(host);
+
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+static void arcmsr_shutdown(struct pci_dev *pdev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ struct AdapterControlBlock *acb =
+ (struct AdapterControlBlock *)host->hostdata;
+
+ arcmsr_stop_adapter_bgrb(acb);
+ arcmsr_flush_adapter_cache(acb);
+}
+
+static int arcmsr_module_init(void)
+{
+ int error = 0;
+
+ error = pci_register_driver(&arcmsr_pci_driver);
+ return error;
+}
+
+static void arcmsr_module_exit(void)
+{
+ pci_unregister_driver(&arcmsr_pci_driver);
+}
+module_init(arcmsr_module_init);
+module_exit(arcmsr_module_exit);
+
+static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ u32 orig_mask = readl(®->outbound_intmask);
+
+ writel(orig_mask | ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
+ ®->outbound_intmask);
+ return orig_mask;
+}
+
+static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
+ u32 orig_mask)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ u32 mask;
+
+ mask = orig_mask & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
+ ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
+ writel(mask, ®->outbound_intmask);
+}
+
+static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg=acb->pmu;
+
+ writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0);
+ if (arcmsr_wait_msgint_ready(acb))
+ printk(KERN_NOTICE
+ "arcmsr%d: wait 'flush adapter cache' timeout \n"
+ , acb->host->host_no);
+}
+
+static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
+{
+ struct scsi_cmnd *pcmd = ccb->pcmd;
+ struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
+
+ pcmd->result = DID_OK << 16;
+ if (sensebuffer) {
+ int sense_data_length =
+ sizeof (struct SENSE_DATA) < sizeof (pcmd->sense_buffer)
+ ? sizeof (struct SENSE_DATA) : sizeof (pcmd->sense_buffer);
+ memset(sensebuffer, 0, sizeof (pcmd->sense_buffer));
+ memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
+ sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
+ sensebuffer->Valid = 1;
+ }
+}
+
+static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ uint32_t Index;
+ uint8_t Retries = 0x00;
+
+ do {
+ for (Index = 0; Index < 100; Index++) {
+ if (readl(®->outbound_intstatus)
+ & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
+ writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT
+ , ®->outbound_intstatus);
+ return 0x00;
+ }
+ msleep_interruptible(10);
+ }/*max 1 seconds*/
+ } while (Retries++ < 20);/*max 20 sec*/
+ return 0xff;
+}
+
+static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
+ struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
+{
+ struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
+ int8_t *psge = (int8_t *)&arcmsr_cdb->u;
+ uint32_t address_lo, address_hi;
+ int arccdbsize = 0x30;
+
+ ccb->pcmd = pcmd;
+ memset(arcmsr_cdb, 0, sizeof (struct ARCMSR_CDB));
+ arcmsr_cdb->Bus = 0;
+ arcmsr_cdb->TargetID = pcmd->device->id;
+ arcmsr_cdb->LUN = pcmd->device->lun;
+ arcmsr_cdb->Function = 1;
+ arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
+ arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
+ memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
+ if (pcmd->use_sg) {
+ int length, sgcount, i, cdb_sgcount = 0;
+ struct scatterlist *sl;
+
+ /* Get Scatter Gather List from scsiport. */
+ sl = (struct scatterlist *) pcmd->request_buffer;
+ sgcount = pci_map_sg(acb->pdev, sl, pcmd->use_sg,
+ pcmd->sc_data_direction);
+ /* map stor port SG list to our iop SG List. */
+ for (i = 0; i < sgcount; i++) {
+ /* Get the physical address of the current data pointer */
+ length = cpu_to_le32(sg_dma_len(sl));
+ address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sl)));
+ address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sl)));
+ if (address_hi == 0) {
+ struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
+
+ pdma_sg->address = address_lo;
+ pdma_sg->length = length;
+ psge += sizeof (struct SG32ENTRY);
+ arccdbsize += sizeof (struct SG32ENTRY);
+ } else {
+ struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
+
+ pdma_sg->addresshigh = address_hi;
+ pdma_sg->address = address_lo;
+ pdma_sg->length = length|IS_SG64_ADDR;
+ psge += sizeof (struct SG64ENTRY);
+ arccdbsize += sizeof (struct SG64ENTRY);
+ }
+ sl++;
+ cdb_sgcount++;
+ }
+ arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
+ arcmsr_cdb->DataLength = pcmd->request_bufflen;
+ if ( arccdbsize > 256)
+ arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
+ } else if (pcmd->request_bufflen) {
+ dma_addr_t dma_addr;
+ dma_addr = pci_map_single(acb->pdev, pcmd->request_buffer,
+ pcmd->request_bufflen, pcmd->sc_data_direction);
+ pcmd->SCp.dma_handle = dma_addr;
+ address_lo = cpu_to_le32(dma_addr_lo32(dma_addr));
+ address_hi = cpu_to_le32(dma_addr_hi32(dma_addr));
+ if (address_hi == 0) {
+ struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
+ pdma_sg->address = address_lo;
+ pdma_sg->length = pcmd->request_bufflen;
+ } else {
+ struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
+ pdma_sg->addresshigh = address_hi;
+ pdma_sg->address = address_lo;
+ pdma_sg->length = pcmd->request_bufflen|IS_SG64_ADDR;
+ }
+ arcmsr_cdb->sgcount = 1;
+ arcmsr_cdb->DataLength = pcmd->request_bufflen;
+ }
+ if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
+ arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
+ ccb->ccb_flags |= CCB_FLAG_WRITE;
+ }
+}
+
+static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
+ struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
+
+ atomic_inc(&acb->ccboutstandingcount);
+ ccb->startdone = ARCMSR_CCB_START;
+ if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
+ writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
+ ®->inbound_queueport);
+ else
+ writel(cdb_shifted_phyaddr, ®->inbound_queueport);
+}
+
+void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ struct QBUFFER __iomem *pwbuffer = (struct QBUFFER __iomem *) ®->message_wbuffer;
+ uint8_t __iomem *iop_data = (uint8_t __iomem *) pwbuffer->data;
+ int32_t allxfer_len = 0;
+
+ if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
+ acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
+ while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
+ && (allxfer_len < 124)) {
+ writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
+ acb->wqbuf_firstindex++;
+ acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
+ iop_data++;
+ allxfer_len++;
+ }
+ writel(allxfer_len, &pwbuffer->data_len);
+ writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK
+ , ®->inbound_doorbell);
+ }
+}
+
+static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+
+ acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
+ writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0);
+ if (arcmsr_wait_msgint_ready(acb))
+ printk(KERN_NOTICE
+ "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
+ , acb->host->host_no);
+}
+
+static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
+{
+ dma_free_coherent(&acb->pdev->dev,
+ ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
+ acb->dma_coherent,
+ acb->dma_coherent_handle);
+}
+
+static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ struct CommandControlBlock *ccb;
+ uint32_t flag_ccb, outbound_intstatus, outbound_doorbell;
+
+ outbound_intstatus = readl(®->outbound_intstatus)
+ & acb->outbound_int_enable;
+ writel(outbound_intstatus, ®->outbound_intstatus);
+ if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
+ outbound_doorbell = readl(®->outbound_doorbell);
+ writel(outbound_doorbell, ®->outbound_doorbell);
+ if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
+ struct QBUFFER __iomem * prbuffer =
+ (struct QBUFFER __iomem *) ®->message_rbuffer;
+ uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
+ int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
+
+ rqbuf_lastindex = acb->rqbuf_lastindex;
+ rqbuf_firstindex = acb->rqbuf_firstindex;
+ iop_len = readl(&prbuffer->data_len);
+ my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1)
+ &(ARCMSR_MAX_QBUFFER - 1);
+ if (my_empty_len >= iop_len) {
+ while (iop_len > 0) {
+ acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
+ acb->rqbuf_lastindex++;
+ acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
+ iop_data++;
+ iop_len--;
+ }
+ writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
+ ®->inbound_doorbell);
+ } else
+ acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
+ }
+ if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
+ acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
+ if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
+ struct QBUFFER __iomem * pwbuffer =
+ (struct QBUFFER __iomem *) ®->message_wbuffer;
+ uint8_t __iomem * iop_data = (uint8_t __iomem *) pwbuffer->data;
+ int32_t allxfer_len = 0;
+
+ acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
+ while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
+ && (allxfer_len < 124)) {
+ writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
+ acb->wqbuf_firstindex++;
+ acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
+ iop_data++;
+ allxfer_len++;
+ }
+ writel(allxfer_len, &pwbuffer->data_len);
+ writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK,
+ ®->inbound_doorbell);
+ }
+ if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
+ acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
+ }
+ }
+ if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
+ int id, lun;
+ /*
+ ****************************************************************
+ ** areca cdb command done
+ ****************************************************************
+ */
+ while (1) {
+ if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF)
+ break;/*chip FIFO no ccb for completion already*/
+ /* check if command done with no error*/
+ ccb = (struct CommandControlBlock *)(acb->vir2phy_offset +
+ (flag_ccb << 5));
+ if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
+ if (ccb->startdone == ARCMSR_CCB_ABORTED) {
+ struct scsi_cmnd *abortcmd=ccb->pcmd;
+ if (abortcmd) {
+ abortcmd->result |= DID_ABORT >> 16;
+ arcmsr_ccb_complete(ccb, 1);
+ printk(KERN_NOTICE
+ "arcmsr%d: ccb='0x%p' isr got aborted command \n"
+ , acb->host->host_no, ccb);
+ }
+ continue;
+ }
+ printk(KERN_NOTICE
+ "arcmsr%d: isr get an illegal ccb command done acb='0x%p'"
+ "ccb='0x%p' ccbacb='0x%p' startdone = 0x%x"
+ " ccboutstandingcount=%d \n"
+ , acb->host->host_no
+ , acb
+ , ccb
+ , ccb->acb
+ , ccb->startdone
+ , atomic_read(&acb->ccboutstandingcount));
+ continue;
+ }
+ id = ccb->pcmd->device->id;
+ lun = ccb->pcmd->device->lun;
+ if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
+ if (acb->devstate[id][lun] == ARECA_RAID_GONE)
+ acb->devstate[id][lun] = ARECA_RAID_GOOD;
+ ccb->pcmd->result = DID_OK << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ } else {
+ switch(ccb->arcmsr_cdb.DeviceStatus) {
+ case ARCMSR_DEV_SELECT_TIMEOUT: {
+ acb->devstate[id][lun] = ARECA_RAID_GONE;
+ ccb->pcmd->result = DID_TIME_OUT << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ break;
+ case ARCMSR_DEV_ABORTED:
+ case ARCMSR_DEV_INIT_FAIL: {
+ acb->devstate[id][lun] = ARECA_RAID_GONE;
+ ccb->pcmd->result = DID_BAD_TARGET << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ break;
+ case ARCMSR_DEV_CHECK_CONDITION: {
+ acb->devstate[id][lun] = ARECA_RAID_GOOD;
+ arcmsr_report_sense_info(ccb);
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ break;
+ default:
+ printk(KERN_NOTICE
+ "arcmsr%d: scsi id=%d lun=%d"
+ " isr get command error done,"
+ "but got unknown DeviceStatus = 0x%x \n"
+ , acb->host->host_no
+ , id
+ , lun
+ , ccb->arcmsr_cdb.DeviceStatus);
+ acb->devstate[id][lun] = ARECA_RAID_GONE;
+ ccb->pcmd->result = DID_NO_CONNECT << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ break;
+ }
+ }
+ }/*drain reply FIFO*/
+ }
+ if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
+ return IRQ_NONE;
+ return IRQ_HANDLED;
+}
+
+static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
+{
+ if (acb) {
+ /* stop adapter background rebuild */
+ if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
+ acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
+ arcmsr_stop_adapter_bgrb(acb);
+ arcmsr_flush_adapter_cache(acb);
+ }
+ }
+}
+
+static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ struct CMD_MESSAGE_FIELD *pcmdmessagefld;
+ int retvalue = 0, transfer_len = 0;
+ char *buffer;
+ uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
+ (uint32_t ) cmd->cmnd[6] << 16 |
+ (uint32_t ) cmd->cmnd[7] << 8 |
+ (uint32_t ) cmd->cmnd[8];
+ /* 4 bytes: Areca io control code */
+ if (cmd->use_sg) {
+ struct scatterlist *sg = (struct scatterlist *)cmd->request_buffer;
+
+ buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+ if (cmd->use_sg > 1) {
+ retvalue = ARCMSR_MESSAGE_FAIL;
+ goto message_out;
+ }
+ transfer_len += sg->length;
+ } else {
+ buffer = cmd->request_buffer;
+ transfer_len = cmd->request_bufflen;
+ }
+ if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
+ retvalue = ARCMSR_MESSAGE_FAIL;
+ goto message_out;
+ }
+ pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
+ switch(controlcode) {
+ case ARCMSR_MESSAGE_READ_RQBUFFER: {
+ unsigned long *ver_addr;
+ dma_addr_t buf_handle;
+ uint8_t *pQbuffer, *ptmpQbuffer;
+ int32_t allxfer_len = 0;
+
+ ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
+ if (!ver_addr) {
+ retvalue = ARCMSR_MESSAGE_FAIL;
+ goto message_out;
+ }
+ ptmpQbuffer = (uint8_t *) ver_addr;
+ while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
+ && (allxfer_len < 1031)) {
+ pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
+ memcpy(ptmpQbuffer, pQbuffer, 1);
+ acb->rqbuf_firstindex++;
+ acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
+ ptmpQbuffer++;
+ allxfer_len++;
+ }
+ if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
+ struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
+ ®->message_rbuffer;
+ uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
+ int32_t iop_len;
+
+ acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
+ iop_len = readl(&prbuffer->data_len);
+ while (iop_len > 0) {
+ acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
+ acb->rqbuf_lastindex++;
+ acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
+ iop_data++;
+ iop_len--;
+ }
+ writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
+ ®->inbound_doorbell);
+ }
+ memcpy(pcmdmessagefld->messagedatabuffer,
+ (uint8_t *)ver_addr, allxfer_len);
+ pcmdmessagefld->cmdmessage.Length = allxfer_len;
+ pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
+ pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+ }
+ break;
+ case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
+ unsigned long *ver_addr;
+ dma_addr_t buf_handle;
+ int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
+ uint8_t *pQbuffer, *ptmpuserbuffer;
+
+ ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
+ if (!ver_addr) {
+ retvalue = ARCMSR_MESSAGE_FAIL;
+ goto message_out;
+ }
+ ptmpuserbuffer = (uint8_t *)ver_addr;
+ user_len = pcmdmessagefld->cmdmessage.Length;
+ memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
+ wqbuf_lastindex = acb->wqbuf_lastindex;
+ wqbuf_firstindex = acb->wqbuf_firstindex;
+ if (wqbuf_lastindex != wqbuf_firstindex) {
+ struct SENSE_DATA *sensebuffer =
+ (struct SENSE_DATA *)cmd->sense_buffer;
+ arcmsr_post_Qbuffer(acb);
+ /* has error report sensedata */
+ sensebuffer->ErrorCode = 0x70;
+ sensebuffer->SenseKey = ILLEGAL_REQUEST;
+ sensebuffer->AdditionalSenseLength = 0x0A;
+ sensebuffer->AdditionalSenseCode = 0x20;
+ sensebuffer->Valid = 1;
+ retvalue = ARCMSR_MESSAGE_FAIL;
+ } else {
+ my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
+ &(ARCMSR_MAX_QBUFFER - 1);
+ if (my_empty_len >= user_len) {
+ while (user_len > 0) {
+ pQbuffer =
+ &acb->wqbuffer[acb->wqbuf_lastindex];
+ memcpy(pQbuffer, ptmpuserbuffer, 1);
+ acb->wqbuf_lastindex++;
+ acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
+ ptmpuserbuffer++;
+ user_len--;
+ }
+ if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
+ acb->acb_flags &=
+ ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
+ arcmsr_post_Qbuffer(acb);
+ }
+ } else {
+ /* has error report sensedata */
+ struct SENSE_DATA *sensebuffer =
+ (struct SENSE_DATA *)cmd->sense_buffer;
+ sensebuffer->ErrorCode = 0x70;
+ sensebuffer->SenseKey = ILLEGAL_REQUEST;
+ sensebuffer->AdditionalSenseLength = 0x0A;
+ sensebuffer->AdditionalSenseCode = 0x20;
+ sensebuffer->Valid = 1;
+ retvalue = ARCMSR_MESSAGE_FAIL;
+ }
+ }
+ pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+ }
+ break;
+ case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
+ uint8_t *pQbuffer = acb->rqbuffer;
+
+ if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
+ acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
+ writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
+ ®->inbound_doorbell);
+ }
+ acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
+ acb->rqbuf_firstindex = 0;
+ acb->rqbuf_lastindex = 0;
+ memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
+ pcmdmessagefld->cmdmessage.ReturnCode =
+ ARCMSR_MESSAGE_RETURNCODE_OK;
+ }
+ break;
+ case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
+ uint8_t *pQbuffer = acb->wqbuffer;
+
+ if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
+ acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
+ writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
+ , ®->inbound_doorbell);
+ }
+ acb->acb_flags |=
+ (ACB_F_MESSAGE_WQBUFFER_CLEARED |
+ ACB_F_MESSAGE_WQBUFFER_READED);
+ acb->wqbuf_firstindex = 0;
+ acb->wqbuf_lastindex = 0;
+ memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
+ pcmdmessagefld->cmdmessage.ReturnCode =
+ ARCMSR_MESSAGE_RETURNCODE_OK;
+ }
+ break;
+ case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
+ uint8_t *pQbuffer;
+
+ if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
+ acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
+ writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
+ , ®->inbound_doorbell);
+ }
+ acb->acb_flags |=
+ (ACB_F_MESSAGE_WQBUFFER_CLEARED
+ | ACB_F_MESSAGE_RQBUFFER_CLEARED
+ | ACB_F_MESSAGE_WQBUFFER_READED);
+ acb->rqbuf_firstindex = 0;
+ acb->rqbuf_lastindex = 0;
+ acb->wqbuf_firstindex = 0;
+ acb->wqbuf_lastindex = 0;
+ pQbuffer = acb->rqbuffer;
+ memset(pQbuffer, 0, sizeof (struct QBUFFER));
+ pQbuffer = acb->wqbuffer;
+ memset(pQbuffer, 0, sizeof (struct QBUFFER));
+ pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
+ }
+ break;
+ case ARCMSR_MESSAGE_RETURN_CODE_3F: {
+ pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
+ }
+ break;
+ case ARCMSR_MESSAGE_SAY_HELLO: {
+ int8_t * hello_string = "Hello! I am ARCMSR";
+
+ memcpy(pcmdmessagefld->messagedatabuffer, hello_string
+ , (int16_t)strlen(hello_string));
+ pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
+ }
+ break;
+ case ARCMSR_MESSAGE_SAY_GOODBYE:
+ arcmsr_iop_parking(acb);
+ break;
+ case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
+ arcmsr_flush_adapter_cache(acb);
+ break;
+ default:
+ retvalue = ARCMSR_MESSAGE_FAIL;
+ }
+ message_out:
+ if (cmd->use_sg) {
+ struct scatterlist *sg;
+
+ sg = (struct scatterlist *) cmd->request_buffer;
+ kunmap_atomic(buffer - sg->offset, KM_IRQ0);
+ }
+ return retvalue;
+}
+
+static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
+{
+ struct list_head *head = &acb->ccb_free_list;
+ struct CommandControlBlock *ccb = NULL;
+
+ if (!list_empty(head)) {
+ ccb = list_entry(head->next, struct CommandControlBlock, list);
+ list_del(head->next);
+ }
+ return ccb;
+}
+
+static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
+ struct scsi_cmnd *cmd)
+{
+ switch (cmd->cmnd[0]) {
+ case INQUIRY: {
+ unsigned char inqdata[36];
+ char *buffer;
+
+ if (cmd->device->lun) {
+ cmd->result = (DID_TIME_OUT << 16);
+ cmd->scsi_done(cmd);
+ return;
+ }
+ inqdata[0] = TYPE_PROCESSOR;
+ /* Periph Qualifier & Periph Dev Type */
+ inqdata[1] = 0;
+ /* rem media bit & Dev Type Modifier */
+ inqdata[2] = 0;
+ /* ISO,ECMA,& ANSI versions */
+ inqdata[4] = 31;
+ /* length of additional data */
+ strncpy(&inqdata[8], "Areca ", 8);
+ /* Vendor Identification */
+ strncpy(&inqdata[16], "RAID controller ", 16);
+ /* Product Identification */
+ strncpy(&inqdata[32], "R001", 4); /* Product Revision */
+ if (cmd->use_sg) {
+ struct scatterlist *sg;
+
+ sg = (struct scatterlist *) cmd->request_buffer;
+ buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+ } else {
+ buffer = cmd->request_buffer;
+ }
+ memcpy(buffer, inqdata, sizeof(inqdata));
+ if (cmd->use_sg) {
+ struct scatterlist *sg;
+
+ sg = (struct scatterlist *) cmd->request_buffer;
+ kunmap_atomic(buffer - sg->offset, KM_IRQ0);
+ }
+ cmd->scsi_done(cmd);
+ }
+ break;
+ case WRITE_BUFFER:
+ case READ_BUFFER: {
+ if (arcmsr_iop_message_xfer(acb, cmd))
+ cmd->result = (DID_ERROR << 16);
+ cmd->scsi_done(cmd);
+ }
+ break;
+ default:
+ cmd->scsi_done(cmd);
+ }
+}
+
+static int arcmsr_queue_command(struct scsi_cmnd *cmd,
+ void (* done)(struct scsi_cmnd *))
+{
+ struct Scsi_Host *host = cmd->device->host;
+ struct AdapterControlBlock *acb =
+ (struct AdapterControlBlock *) host->hostdata;
+ struct CommandControlBlock *ccb;
+ int target = cmd->device->id;
+ int lun = cmd->device->lun;
+
+ cmd->scsi_done = done;
+ cmd->host_scribble = NULL;
+ cmd->result = 0;
+ if (acb->acb_flags & ACB_F_BUS_RESET) {
+ printk(KERN_NOTICE "arcmsr%d: bus reset"
+ " and return busy \n"
+ , acb->host->host_no);
+ return SCSI_MLQUEUE_HOST_BUSY;
+ }
+ if(target == 16) {
+ /* virtual device for iop message transfer */
+ arcmsr_handle_virtual_command(acb, cmd);
+ return 0;
+ }
+ if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
+ uint8_t block_cmd;
+
+ block_cmd = cmd->cmnd[0] & 0x0f;
+ if (block_cmd == 0x08 || block_cmd == 0x0a) {
+ printk(KERN_NOTICE
+ "arcmsr%d: block 'read/write'"
+ "command with gone raid volume"
+ " Cmd=%2x, TargetId=%d, Lun=%d \n"
+ , acb->host->host_no
+ , cmd->cmnd[0]
+ , target, lun);
+ cmd->result = (DID_NO_CONNECT << 16);
+ cmd->scsi_done(cmd);
+ return 0;
+ }
+ }
+ if (atomic_read(&acb->ccboutstandingcount) >=
+ ARCMSR_MAX_OUTSTANDING_CMD)
+ return SCSI_MLQUEUE_HOST_BUSY;
+
+ ccb = arcmsr_get_freeccb(acb);
+ if (!ccb)
+ return SCSI_MLQUEUE_HOST_BUSY;
+ arcmsr_build_ccb(acb, ccb, cmd);
+ arcmsr_post_ccb(acb, ccb);
+ return 0;
+}
+
+static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ char *acb_firm_model = acb->firm_model;
+ char *acb_firm_version = acb->firm_version;
+ char __iomem *iop_firm_model = (char __iomem *) ®->message_rwbuffer[15];
+ char __iomem *iop_firm_version = (char __iomem *) ®->message_rwbuffer[17];
+ int count;
+
+ writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0);
+ if (arcmsr_wait_msgint_ready(acb))
+ printk(KERN_NOTICE
+ "arcmsr%d: wait "
+ "'get adapter firmware miscellaneous data' timeout \n"
+ , acb->host->host_no);
+ count = 8;
+ while (count) {
+ *acb_firm_model = readb(iop_firm_model);
+ acb_firm_model++;
+ iop_firm_model++;
+ count--;
+ }
+ count = 16;
+ while (count) {
+ *acb_firm_version = readb(iop_firm_version);
+ acb_firm_version++;
+ iop_firm_version++;
+ count--;
+ }
+ printk(KERN_INFO
+ "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
+ , acb->host->host_no
+ , acb->firm_version);
+ acb->firm_request_len = readl(®->message_rwbuffer[1]);
+ acb->firm_numbers_queue = readl(®->message_rwbuffer[2]);
+ acb->firm_sdram_size = readl(®->message_rwbuffer[3]);
+ acb->firm_hd_channels = readl(®->message_rwbuffer[4]);
+}
+
+static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
+ struct CommandControlBlock *poll_ccb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ struct CommandControlBlock *ccb;
+ uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
+ int id, lun;
+
+ polling_ccb_retry:
+ poll_count++;
+ outbound_intstatus = readl(®->outbound_intstatus)
+ & acb->outbound_int_enable;
+ writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/
+ while (1) {
+ if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) {
+ if (poll_ccb_done)
+ break;
+ else {
+ msleep(25);
+ if (poll_count > 100)
+ break;
+ goto polling_ccb_retry;
+ }
+ }
+ ccb = (struct CommandControlBlock *)
+ (acb->vir2phy_offset + (flag_ccb << 5));
+ if ((ccb->acb != acb) ||
+ (ccb->startdone != ARCMSR_CCB_START)) {
+ if ((ccb->startdone == ARCMSR_CCB_ABORTED) ||
+ (ccb == poll_ccb)) {
+ printk(KERN_NOTICE
+ "arcmsr%d: scsi id=%d lun=%d ccb='0x%p'"
+ " poll command abort successfully \n"
+ , acb->host->host_no
+ , ccb->pcmd->device->id
+ , ccb->pcmd->device->lun
+ , ccb);
+ ccb->pcmd->result = DID_ABORT << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ poll_ccb_done = 1;
+ continue;
+ }
+ printk(KERN_NOTICE
+ "arcmsr%d: polling get an illegal ccb"
+ " command done ccb='0x%p'"
+ "ccboutstandingcount=%d \n"
+ , acb->host->host_no
+ , ccb
+ , atomic_read(&acb->ccboutstandingcount));
+ continue;
+ }
+ id = ccb->pcmd->device->id;
+ lun = ccb->pcmd->device->lun;
+ if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
+ if (acb->devstate[id][lun] == ARECA_RAID_GONE)
+ acb->devstate[id][lun] = ARECA_RAID_GOOD;
+ ccb->pcmd->result = DID_OK << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ } else {
+ switch(ccb->arcmsr_cdb.DeviceStatus) {
+ case ARCMSR_DEV_SELECT_TIMEOUT: {
+ acb->devstate[id][lun] = ARECA_RAID_GONE;
+ ccb->pcmd->result = DID_TIME_OUT << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ break;
+ case ARCMSR_DEV_ABORTED:
+ case ARCMSR_DEV_INIT_FAIL: {
+ acb->devstate[id][lun] = ARECA_RAID_GONE;
+ ccb->pcmd->result = DID_BAD_TARGET << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ break;
+ case ARCMSR_DEV_CHECK_CONDITION: {
+ acb->devstate[id][lun] = ARECA_RAID_GOOD;
+ arcmsr_report_sense_info(ccb);
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ break;
+ default:
+ printk(KERN_NOTICE
+ "arcmsr%d: scsi id=%d lun=%d"
+ " polling and getting command error done"
+ "but got unknown DeviceStatus = 0x%x \n"
+ , acb->host->host_no
+ , id
+ , lun
+ , ccb->arcmsr_cdb.DeviceStatus);
+ acb->devstate[id][lun] = ARECA_RAID_GONE;
+ ccb->pcmd->result = DID_BAD_TARGET << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ break;
+ }
+ }
+ }
+}
+
+static void arcmsr_iop_init(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ uint32_t intmask_org, mask, outbound_doorbell, firmware_state = 0;
+
+ do {
+ firmware_state = readl(®->outbound_msgaddr1);
+ } while (!(firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK));
+ intmask_org = readl(®->outbound_intmask)
+ | ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
+ arcmsr_get_firmware_spec(acb);
+
+ acb->acb_flags |= ACB_F_MSG_START_BGRB;
+ writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0);
+ if (arcmsr_wait_msgint_ready(acb)) {
+ printk(KERN_NOTICE "arcmsr%d: "
+ "wait 'start adapter background rebulid' timeout\n",
+ acb->host->host_no);
+ }
+
+ outbound_doorbell = readl(®->outbound_doorbell);
+ writel(outbound_doorbell, ®->outbound_doorbell);
+ writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell);
+ mask = ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE
+ | ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
+ writel(intmask_org & mask, ®->outbound_intmask);
+ acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
+ acb->acb_flags |= ACB_F_IOP_INITED;
+}
+
+static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
+{
+ struct MessageUnit __iomem *reg = acb->pmu;
+ struct CommandControlBlock *ccb;
+ uint32_t intmask_org;
+ int i = 0;
+
+ if (atomic_read(&acb->ccboutstandingcount) != 0) {
+ /* talk to iop 331 outstanding command aborted */
+ arcmsr_abort_allcmd(acb);
+ /* wait for 3 sec for all command aborted*/
+ msleep_interruptible(3000);
+ /* disable all outbound interrupt */
+ intmask_org = arcmsr_disable_outbound_ints(acb);
+ /* clear all outbound posted Q */
+ for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
+ readl(®->outbound_queueport);
+ for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
+ ccb = acb->pccb_pool[i];
+ if ((ccb->startdone == ARCMSR_CCB_START) ||
+ (ccb->startdone == ARCMSR_CCB_ABORTED)) {
+ ccb->startdone = ARCMSR_CCB_ABORTED;
+ ccb->pcmd->result = DID_ABORT << 16;
+ arcmsr_ccb_complete(ccb, 1);
+ }
+ }
+ /* enable all outbound interrupt */
+ arcmsr_enable_outbound_ints(acb, intmask_org);
+ }
+ atomic_set(&acb->ccboutstandingcount, 0);
+}
+
+static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
+{
+ struct AdapterControlBlock *acb =
+ (struct AdapterControlBlock *)cmd->device->host->hostdata;
+ int i;
+
+ acb->num_resets++;
+ acb->acb_flags |= ACB_F_BUS_RESET;
+ for (i = 0; i < 400; i++) {
+ if (!atomic_read(&acb->ccboutstandingcount))
+ break;
+ arcmsr_interrupt(acb);
+ msleep(25);
+ }
+ arcmsr_iop_reset(acb);
+ acb->acb_flags &= ~ACB_F_BUS_RESET;
+ return SUCCESS;
+}
+
+static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
+ struct CommandControlBlock *ccb)
+{
+ u32 intmask;
+
+ ccb->startdone = ARCMSR_CCB_ABORTED;
+
+ /*
+ ** Wait for 3 sec for all command done.
+ */
+ msleep_interruptible(3000);
+
+ intmask = arcmsr_disable_outbound_ints(acb);
+ arcmsr_polling_ccbdone(acb, ccb);
+ arcmsr_enable_outbound_ints(acb, intmask);
+}
+
+static int arcmsr_abort(struct scsi_cmnd *cmd)
+{
+ struct AdapterControlBlock *acb =
+ (struct AdapterControlBlock *)cmd->device->host->hostdata;
+ int i = 0;
+
+ printk(KERN_NOTICE
+ "arcmsr%d: abort device command of scsi id=%d lun=%d \n",
+ acb->host->host_no, cmd->device->id, cmd->device->lun);
+ acb->num_aborts++;
+
+ /*
+ ************************************************
+ ** the all interrupt service routine is locked
+ ** we need to handle it as soon as possible and exit
+ ************************************************
+ */
+ if (!atomic_read(&acb->ccboutstandingcount))
+ return SUCCESS;
+
+ for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
+ struct CommandControlBlock *ccb = acb->pccb_pool[i];
+ if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
+ arcmsr_abort_one_cmd(acb, ccb);
+ break;
+ }
+ }
+
+ return SUCCESS;
+}
+
+static const char *arcmsr_info(struct Scsi_Host *host)
+{
+ struct AdapterControlBlock *acb =
+ (struct AdapterControlBlock *) host->hostdata;
+ static char buf[256];
+ char *type;
+ int raid6 = 1;
+
+ switch (acb->pdev->device) {
+ case PCI_DEVICE_ID_ARECA_1110:
+ case PCI_DEVICE_ID_ARECA_1210:
+ raid6 = 0;
+ /*FALLTHRU*/
+ case PCI_DEVICE_ID_ARECA_1120:
+ case PCI_DEVICE_ID_ARECA_1130:
+ case PCI_DEVICE_ID_ARECA_1160:
+ case PCI_DEVICE_ID_ARECA_1170:
+ case PCI_DEVICE_ID_ARECA_1220:
+ case PCI_DEVICE_ID_ARECA_1230:
+ case PCI_DEVICE_ID_ARECA_1260:
+ case PCI_DEVICE_ID_ARECA_1270:
+ case PCI_DEVICE_ID_ARECA_1280:
+ type = "SATA";
+ break;
+ case PCI_DEVICE_ID_ARECA_1380:
+ case PCI_DEVICE_ID_ARECA_1381:
+ case PCI_DEVICE_ID_ARECA_1680:
+ case PCI_DEVICE_ID_ARECA_1681:
+ type = "SAS";
+ break;
+ default:
+ type = "X-TYPE";
+ break;
+ }
+ sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
+ type, raid6 ? "( RAID6 capable)" : "",
+ ARCMSR_DRIVER_VERSION);
+ return buf;
+}
+
+