/* ******************************************************************************* ** 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "arcmsr.h" MODULE_AUTHOR("Erich Chen "); 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; }