diff options
Diffstat (limited to 'drivers/scsi/arcmsr/arcmsr_hba.c')
| -rw-r--r-- | drivers/scsi/arcmsr/arcmsr_hba.c | 1496 |
1 files changed, 1496 insertions, 0 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c new file mode 100644 index 00000000000..475f978ff8f --- /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; +} + + |