| /* |
| ******************************************************************************* |
| ** 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: support@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 <linux/aer.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 <support@areca.com.tw>"); |
| MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS 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_iop_confirm(struct AdapterControlBlock *acb); |
| 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 u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb); |
| static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb); |
| static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb); |
| static void arcmsr_flush_hbb_cache(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/SAS 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, |
| }; |
| #ifdef CONFIG_SCSI_ARCMSR_AER |
| static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev); |
| static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, |
| pci_channel_state_t state); |
| |
| static struct pci_error_handlers arcmsr_pci_error_handlers = { |
| .error_detected = arcmsr_pci_error_detected, |
| .slot_reset = arcmsr_pci_slot_reset, |
| }; |
| #endif |
| 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_1200)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)}, |
| {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, |
| #ifdef CONFIG_SCSI_ARCMSR_AER |
| .err_handler = &arcmsr_pci_error_handlers, |
| #endif |
| }; |
| |
| static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id) |
| { |
| irqreturn_t handle_state; |
| struct AdapterControlBlock *acb = dev_id; |
| |
| spin_lock(acb->host->host_lock); |
| handle_state = arcmsr_interrupt(acb); |
| spin_unlock(acb->host->host_lock); |
| |
| 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 void arcmsr_define_adapter_type(struct AdapterControlBlock *acb) |
| { |
| struct pci_dev *pdev = acb->pdev; |
| u16 dev_id; |
| pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id); |
| switch (dev_id) { |
| case 0x1201 : { |
| acb->adapter_type = ACB_ADAPTER_TYPE_B; |
| } |
| break; |
| |
| default : acb->adapter_type = ACB_ADAPTER_TYPE_A; |
| } |
| } |
| |
| static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) |
| { |
| |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| struct pci_dev *pdev = acb->pdev; |
| void *dma_coherent; |
| dma_addr_t dma_coherent_handle, dma_addr; |
| struct CommandControlBlock *ccb_tmp; |
| uint32_t intmask_org; |
| int i, j; |
| |
| acb->pmuA = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| if (!acb->pmuA) { |
| printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", |
| acb->host->host_no); |
| return -ENOMEM; |
| } |
| |
| dma_coherent = dma_alloc_coherent(&pdev->dev, |
| ARCMSR_MAX_FREECCB_NUM * |
| sizeof (struct CommandControlBlock) + 0x20, |
| &dma_coherent_handle, GFP_KERNEL); |
| |
| if (!dma_coherent) { |
| iounmap(acb->pmuA); |
| 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_GONE; |
| |
| /* |
| ** here we need to tell iop 331 our ccb_tmp.HighPart |
| ** if ccb_tmp.HighPart is not zero |
| */ |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| |
| struct pci_dev *pdev = acb->pdev; |
| struct MessageUnit_B *reg; |
| void __iomem *mem_base0, *mem_base1; |
| void *dma_coherent; |
| dma_addr_t dma_coherent_handle, dma_addr; |
| uint32_t intmask_org; |
| struct CommandControlBlock *ccb_tmp; |
| int i, j; |
| |
| dma_coherent = dma_alloc_coherent(&pdev->dev, |
| ((ARCMSR_MAX_FREECCB_NUM * |
| sizeof(struct CommandControlBlock) + 0x20) + |
| sizeof(struct MessageUnit_B)), |
| &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)); |
| } |
| |
| reg = (struct MessageUnit_B *)(dma_coherent + |
| ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); |
| |
| 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++; |
| } |
| |
| reg = (struct MessageUnit_B *)(dma_coherent + |
| ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); |
| acb->pmuB = reg; |
| mem_base0 = ioremap(pci_resource_start(pdev, 0), |
| pci_resource_len(pdev, 0)); |
| if (!mem_base0) |
| goto out; |
| |
| mem_base1 = ioremap(pci_resource_start(pdev, 2), |
| pci_resource_len(pdev, 2)); |
| if (!mem_base1) { |
| iounmap(mem_base0); |
| goto out; |
| } |
| |
| reg->drv2iop_doorbell_reg = mem_base0 + ARCMSR_DRV2IOP_DOORBELL; |
| reg->drv2iop_doorbell_mask_reg = mem_base0 + |
| ARCMSR_DRV2IOP_DOORBELL_MASK; |
| reg->iop2drv_doorbell_reg = mem_base0 + ARCMSR_IOP2DRV_DOORBELL; |
| reg->iop2drv_doorbell_mask_reg = mem_base0 + |
| ARCMSR_IOP2DRV_DOORBELL_MASK; |
| reg->ioctl_wbuffer_reg = mem_base1 + ARCMSR_IOCTL_WBUFFER; |
| reg->ioctl_rbuffer_reg = mem_base1 + ARCMSR_IOCTL_RBUFFER; |
| reg->msgcode_rwbuffer_reg = mem_base1 + ARCMSR_MSGCODE_RWBUFFER; |
| |
| 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 |
| */ |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| } |
| break; |
| } |
| return 0; |
| |
| out: |
| dma_free_coherent(&acb->pdev->dev, |
| ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20, |
| acb->dma_coherent, acb->dma_coherent_handle); |
| return -ENOMEM; |
| } |
| |
| 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; |
| } |
| arcmsr_define_adapter_type(acb); |
| |
| 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_release_regions; |
| |
| error = request_irq(pdev->irq, arcmsr_do_interrupt, |
| IRQF_SHARED, "arcmsr", acb); |
| if (error) |
| goto out_free_ccb_pool; |
| |
| arcmsr_iop_init(acb); |
| pci_set_drvdata(pdev, host); |
| if (strncmp(acb->firm_version, "V1.42", 5) >= 0) |
| host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B; |
| |
| 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); |
| #ifdef CONFIG_SCSI_ARCMSR_AER |
| pci_enable_pcie_error_reporting(pdev); |
| #endif |
| return 0; |
| out_free_sysfs: |
| out_free_irq: |
| free_irq(pdev->irq, acb); |
| out_free_ccb_pool: |
| arcmsr_free_ccb_pool(acb); |
| 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 uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| 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(10); |
| }/*max 1 seconds*/ |
| |
| } while (Retries++ < 20);/*max 20 sec*/ |
| return 0xff; |
| } |
| |
| static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_B *reg = acb->pmuB; |
| uint32_t Index; |
| uint8_t Retries = 0x00; |
| |
| do { |
| for (Index = 0; Index < 100; Index++) { |
| if (readl(reg->iop2drv_doorbell_reg) |
| & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { |
| writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN |
| , reg->iop2drv_doorbell_reg); |
| return 0x00; |
| } |
| msleep(10); |
| }/*max 1 seconds*/ |
| |
| } while (Retries++ < 20);/*max 20 sec*/ |
| return 0xff; |
| } |
| |
| static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| |
| writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0); |
| if (arcmsr_hba_wait_msgint_ready(acb)) |
| printk(KERN_NOTICE |
| "arcmsr%d: wait 'abort all outstanding command' timeout \n" |
| , acb->host->host_no); |
| } |
| |
| static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_B *reg = acb->pmuB; |
| |
| writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg); |
| if (arcmsr_hbb_wait_msgint_ready(acb)) |
| printk(KERN_NOTICE |
| "arcmsr%d: wait 'abort all outstanding command' timeout \n" |
| , acb->host->host_no); |
| } |
| |
| static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| arcmsr_abort_hba_allcmd(acb); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| arcmsr_abort_hbb_allcmd(acb); |
| } |
| } |
| } |
| |
| static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb) |
| { |
| struct scsi_cmnd *pcmd = ccb->pcmd; |
| |
| scsi_dma_unmap(pcmd); |
| } |
| |
| 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_flush_hba_cache(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| int retry_count = 30; |
| |
| writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); |
| do { |
| if (!arcmsr_hba_wait_msgint_ready(acb)) |
| break; |
| else { |
| retry_count--; |
| printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ |
| timeout, retry count down = %d \n", acb->host->host_no, retry_count); |
| } |
| } while (retry_count != 0); |
| } |
| |
| static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_B *reg = acb->pmuB; |
| int retry_count = 30; |
| |
| writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg); |
| do { |
| if (!arcmsr_hbb_wait_msgint_ready(acb)) |
| break; |
| else { |
| retry_count--; |
| printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ |
| timeout,retry count down = %d \n", acb->host->host_no, retry_count); |
| } |
| } while (retry_count != 0); |
| } |
| |
| static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| arcmsr_flush_hba_cache(acb); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| arcmsr_flush_hbb_cache(acb); |
| } |
| } |
| } |
| |
| 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) < SCSI_SENSE_BUFFERSIZE |
| ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE; |
| memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE); |
| memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length); |
| sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS; |
| sensebuffer->Valid = 1; |
| } |
| } |
| |
| static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb) |
| { |
| u32 orig_mask = 0; |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A : { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| orig_mask = readl(®->outbound_intmask)|\ |
| ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE; |
| writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \ |
| ®->outbound_intmask); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B : { |
| struct MessageUnit_B *reg = acb->pmuB; |
| orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \ |
| (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); |
| writel(0, reg->iop2drv_doorbell_mask_reg); |
| } |
| break; |
| } |
| return orig_mask; |
| } |
| |
| static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \ |
| struct CommandControlBlock *ccb, uint32_t flag_ccb) |
| { |
| |
| uint8_t id, lun; |
| 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_NO_CONNECT << 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; |
| } |
| } |
| } |
| |
| static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb) |
| |
| { |
| struct CommandControlBlock *ccb; |
| |
| 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); |
| } |
| } |
| 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)); |
| } |
| arcmsr_report_ccb_state(acb, ccb, flag_ccb); |
| } |
| |
| static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb) |
| { |
| int i = 0; |
| uint32_t flag_ccb; |
| |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| uint32_t outbound_intstatus; |
| outbound_intstatus = readl(®->outbound_intstatus) & |
| acb->outbound_int_enable; |
| /*clear and abort all outbound posted Q*/ |
| writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ |
| while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) |
| && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) { |
| arcmsr_drain_donequeue(acb, flag_ccb); |
| } |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| /*clear all outbound posted Q*/ |
| for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) { |
| if ((flag_ccb = readl(®->done_qbuffer[i])) != 0) { |
| writel(0, ®->done_qbuffer[i]); |
| arcmsr_drain_donequeue(acb, flag_ccb); |
| } |
| writel(0, ®->post_qbuffer[i]); |
| } |
| reg->doneq_index = 0; |
| reg->postq_index = 0; |
| } |
| break; |
| } |
| } |
| static void arcmsr_remove(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *host = pci_get_drvdata(pdev); |
| struct AdapterControlBlock *acb = |
| (struct AdapterControlBlock *) host->hostdata; |
| int poll_count = 0; |
| |
| arcmsr_free_sysfs_attr(acb); |
| scsi_remove_host(host); |
| arcmsr_stop_adapter_bgrb(acb); |
| arcmsr_flush_adapter_cache(acb); |
| arcmsr_disable_outbound_ints(acb); |
| acb->acb_flags |= ACB_F_SCSISTOPADAPTER; |
| acb->acb_flags &= ~ACB_F_IOP_INITED; |
| |
| for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) { |
| if (!atomic_read(&acb->ccboutstandingcount)) |
| break; |
| arcmsr_interrupt(acb);/* FIXME: need spinlock */ |
| msleep(25); |
| } |
| |
| if (atomic_read(&acb->ccboutstandingcount)) { |
| int i; |
| |
| arcmsr_abort_allcmd(acb); |
| arcmsr_done4abort_postqueue(acb); |
| 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); |
| 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 void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \ |
| u32 intmask_org) |
| { |
| u32 mask; |
| |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A : { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE | |
| ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); |
| writel(mask, ®->outbound_intmask); |
| acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff; |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B : { |
| struct MessageUnit_B *reg = acb->pmuB; |
| mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \ |
| ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE); |
| writel(mask, reg->iop2drv_doorbell_mask_reg); |
| acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f; |
| } |
| } |
| } |
| |
| 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; |
| __le32 address_lo, address_hi; |
| int arccdbsize = 0x30; |
| int nseg; |
| |
| 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); |
| |
| nseg = scsi_dma_map(pcmd); |
| BUG_ON(nseg < 0); |
| |
| if (nseg) { |
| __le32 length; |
| int i, cdb_sgcount = 0; |
| struct scatterlist *sg; |
| |
| /* map stor port SG list to our iop SG List. */ |
| scsi_for_each_sg(pcmd, sg, nseg, i) { |
| /* Get the physical address of the current data pointer */ |
| length = cpu_to_le32(sg_dma_len(sg)); |
| address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); |
| address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); |
| 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|cpu_to_le32(IS_SG64_ADDR); |
| psge += sizeof (struct SG64ENTRY); |
| arccdbsize += sizeof (struct SG64ENTRY); |
| } |
| cdb_sgcount++; |
| } |
| arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; |
| arcmsr_cdb->DataLength = scsi_bufflen(pcmd); |
| if ( arccdbsize > 256) |
| arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; |
| } |
| 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) |
| { |
| 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; |
| |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| |
| 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); |
| } |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| uint32_t ending_index, index = reg->postq_index; |
| |
| ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE); |
| writel(0, ®->post_qbuffer[ending_index]); |
| if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) { |
| writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\ |
| ®->post_qbuffer[index]); |
| } |
| else { |
| writel(cdb_shifted_phyaddr, ®->post_qbuffer[index]); |
| } |
| index++; |
| index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */ |
| reg->postq_index = index; |
| writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg); |
| } |
| break; |
| } |
| } |
| |
| static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| acb->acb_flags &= ~ACB_F_MSG_START_BGRB; |
| writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0); |
| |
| if (arcmsr_hba_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE |
| "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" |
| , acb->host->host_no); |
| } |
| } |
| |
| static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_B *reg = acb->pmuB; |
| acb->acb_flags &= ~ACB_F_MSG_START_BGRB; |
| writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg); |
| |
| if (arcmsr_hbb_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE |
| "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" |
| , acb->host->host_no); |
| } |
| } |
| |
| static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| arcmsr_stop_hba_bgrb(acb); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| arcmsr_stop_hbb_bgrb(acb); |
| } |
| break; |
| } |
| } |
| |
| static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| iounmap(acb->pmuA); |
| break; |
| } |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL); |
| iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER); |
| } |
| } |
| dma_free_coherent(&acb->pdev->dev, |
| ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20, |
| acb->dma_coherent, |
| acb->dma_coherent_handle); |
| } |
| |
| void arcmsr_iop_message_read(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); |
| } |
| break; |
| } |
| } |
| |
| static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| /* |
| ** push inbound doorbell tell iop, driver data write ok |
| ** and wait reply on next hwinterrupt for next Qbuffer post |
| */ |
| writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, ®->inbound_doorbell); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| /* |
| ** push inbound doorbell tell iop, driver data write ok |
| ** and wait reply on next hwinterrupt for next Qbuffer post |
| */ |
| writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg); |
| } |
| break; |
| } |
| } |
| |
| struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb) |
| { |
| struct QBUFFER __iomem *qbuffer = NULL; |
| |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| qbuffer = (struct QBUFFER __iomem *)®->message_rbuffer; |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| qbuffer = (struct QBUFFER __iomem *)reg->ioctl_rbuffer_reg; |
| } |
| break; |
| } |
| return qbuffer; |
| } |
| |
| static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb) |
| { |
| struct QBUFFER __iomem *pqbuffer = NULL; |
| |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| pqbuffer = (struct QBUFFER __iomem *) ®->message_wbuffer; |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg; |
| } |
| break; |
| } |
| return pqbuffer; |
| } |
| |
| static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb) |
| { |
| struct QBUFFER __iomem *prbuffer; |
| struct QBUFFER *pQbuffer; |
| uint8_t __iomem *iop_data; |
| int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex; |
| |
| rqbuf_lastindex = acb->rqbuf_lastindex; |
| rqbuf_firstindex = acb->rqbuf_firstindex; |
| prbuffer = arcmsr_get_iop_rqbuffer(acb); |
| iop_data = (uint8_t __iomem *)prbuffer->data; |
| iop_len = 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) { |
| pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex]; |
| memcpy(pQbuffer, iop_data,1); |
| rqbuf_lastindex++; |
| rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; |
| iop_data++; |
| iop_len--; |
| } |
| acb->rqbuf_lastindex = rqbuf_lastindex; |
| arcmsr_iop_message_read(acb); |
| } |
| |
| else { |
| acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; |
| } |
| } |
| |
| static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb) |
| { |
| acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED; |
| if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) { |
| uint8_t *pQbuffer; |
| struct QBUFFER __iomem *pwbuffer; |
| uint8_t __iomem *iop_data; |
| int32_t allxfer_len = 0; |
| |
| acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); |
| pwbuffer = arcmsr_get_iop_wqbuffer(acb); |
| iop_data = (uint8_t __iomem *)pwbuffer->data; |
| |
| while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \ |
| (allxfer_len < 124)) { |
| pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex]; |
| memcpy(iop_data, pQbuffer, 1); |
| acb->wqbuf_firstindex++; |
| acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; |
| iop_data++; |
| allxfer_len++; |
| } |
| pwbuffer->data_len = allxfer_len; |
| |
| arcmsr_iop_message_wrote(acb); |
| } |
| |
| if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) { |
| acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED; |
| } |
| } |
| |
| static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb) |
| { |
| uint32_t outbound_doorbell; |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| |
| outbound_doorbell = readl(®->outbound_doorbell); |
| writel(outbound_doorbell, ®->outbound_doorbell); |
| if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) { |
| arcmsr_iop2drv_data_wrote_handle(acb); |
| } |
| |
| if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) { |
| arcmsr_iop2drv_data_read_handle(acb); |
| } |
| } |
| |
| static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb) |
| { |
| uint32_t flag_ccb; |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| |
| while ((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) { |
| arcmsr_drain_donequeue(acb, flag_ccb); |
| } |
| } |
| |
| static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb) |
| { |
| uint32_t index; |
| uint32_t flag_ccb; |
| struct MessageUnit_B *reg = acb->pmuB; |
| |
| index = reg->doneq_index; |
| |
| while ((flag_ccb = readl(®->done_qbuffer[index])) != 0) { |
| writel(0, ®->done_qbuffer[index]); |
| arcmsr_drain_donequeue(acb, flag_ccb); |
| index++; |
| index %= ARCMSR_MAX_HBB_POSTQUEUE; |
| reg->doneq_index = index; |
| } |
| } |
| |
| static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb) |
| { |
| uint32_t outbound_intstatus; |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| |
| outbound_intstatus = readl(®->outbound_intstatus) & \ |
| acb->outbound_int_enable; |
| if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) { |
| return 1; |
| } |
| writel(outbound_intstatus, ®->outbound_intstatus); |
| if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) { |
| arcmsr_hba_doorbell_isr(acb); |
| } |
| if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) { |
| arcmsr_hba_postqueue_isr(acb); |
| } |
| return 0; |
| } |
| |
| static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb) |
| { |
| uint32_t outbound_doorbell; |
| struct MessageUnit_B *reg = acb->pmuB; |
| |
| outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \ |
| acb->outbound_int_enable; |
| if (!outbound_doorbell) |
| return 1; |
| |
| writel(~outbound_doorbell, reg->iop2drv_doorbell_reg); |
| |
| if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) { |
| arcmsr_iop2drv_data_wrote_handle(acb); |
| } |
| if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) { |
| arcmsr_iop2drv_data_read_handle(acb); |
| } |
| if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) { |
| arcmsr_hbb_postqueue_isr(acb); |
| } |
| |
| return 0; |
| } |
| |
| static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| if (arcmsr_handle_hba_isr(acb)) { |
| return IRQ_NONE; |
| } |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| if (arcmsr_handle_hbb_isr(acb)) { |
| return IRQ_NONE; |
| } |
| } |
| break; |
| } |
| 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) { |
| uint32_t intmask_org; |
| acb->acb_flags &= ~ACB_F_MSG_START_BGRB; |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| arcmsr_stop_adapter_bgrb(acb); |
| arcmsr_flush_adapter_cache(acb); |
| arcmsr_enable_outbound_ints(acb, intmask_org); |
| } |
| } |
| } |
| |
| void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb) |
| { |
| int32_t wqbuf_firstindex, wqbuf_lastindex; |
| uint8_t *pQbuffer; |
| struct QBUFFER __iomem *pwbuffer; |
| uint8_t __iomem *iop_data; |
| int32_t allxfer_len = 0; |
| |
| pwbuffer = arcmsr_get_iop_wqbuffer(acb); |
| iop_data = (uint8_t __iomem *)pwbuffer->data; |
| if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) { |
| acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); |
| wqbuf_firstindex = acb->wqbuf_firstindex; |
| wqbuf_lastindex = acb->wqbuf_lastindex; |
| while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) { |
| pQbuffer = &acb->wqbuffer[wqbuf_firstindex]; |
| memcpy(iop_data, pQbuffer, 1); |
| wqbuf_firstindex++; |
| wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; |
| iop_data++; |
| allxfer_len++; |
| } |
| acb->wqbuf_firstindex = wqbuf_firstindex; |
| pwbuffer->data_len = allxfer_len; |
| arcmsr_iop_message_wrote(acb); |
| } |
| } |
| |
| static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ |
| struct scsi_cmnd *cmd) |
| { |
| struct CMD_MESSAGE_FIELD *pcmdmessagefld; |
| int retvalue = 0, transfer_len = 0; |
| char *buffer; |
| struct scatterlist *sg; |
| 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 */ |
| |
| sg = scsi_sglist(cmd); |
| buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; |
| if (scsi_sg_count(cmd) > 1) { |
| retvalue = ARCMSR_MESSAGE_FAIL; |
| goto message_out; |
| } |
| transfer_len += sg->length; |
| |
| 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; |
| uint8_t __iomem *iop_data; |
| int32_t iop_len; |
| |
| acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; |
| prbuffer = arcmsr_get_iop_rqbuffer(acb); |
| iop_data = prbuffer->data; |
| 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--; |
| } |
| arcmsr_iop_message_read(acb); |
| } |
| 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_ioctldata2iop(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_ioctldata2iop(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; |
| arcmsr_iop_message_read(acb); |
| } |
| 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; |
| arcmsr_iop_message_read(acb); |
| } |
| 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; |
| arcmsr_iop_message_read(acb); |
| } |
| 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: |
| sg = scsi_sglist(cmd); |
| 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; |
| struct scatterlist *sg; |
| |
| 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 */ |
| |
| sg = scsi_sglist(cmd); |
| buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; |
| |
| memcpy(buffer, inqdata, sizeof(inqdata)); |
| sg = scsi_sglist(cmd); |
| 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_hba_config(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| 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_hba_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_get_hbb_config(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_B *reg = acb->pmuB; |
| uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg; |
| char *acb_firm_model = acb->firm_model; |
| char *acb_firm_version = acb->firm_version; |
| char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]); |
| /*firm_model,15,60-67*/ |
| char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]); |
| /*firm_version,17,68-83*/ |
| int count; |
| |
| writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg); |
| if (arcmsr_hbb_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); |
| |
| lrwbuffer++; |
| acb->firm_request_len = readl(lrwbuffer++); |
| /*firm_request_len,1,04-07*/ |
| acb->firm_numbers_queue = readl(lrwbuffer++); |
| /*firm_numbers_queue,2,08-11*/ |
| acb->firm_sdram_size = readl(lrwbuffer++); |
| /*firm_sdram_size,3,12-15*/ |
| acb->firm_hd_channels = readl(lrwbuffer); |
| /*firm_ide_channels,4,16-19*/ |
| } |
| |
| static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| arcmsr_get_hba_config(acb); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| arcmsr_get_hbb_config(acb); |
| } |
| break; |
| } |
| } |
| |
| static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb, |
| struct CommandControlBlock *poll_ccb) |
| { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| struct CommandControlBlock *ccb; |
| uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0; |
| |
| polling_hba_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_hba_ccb_retry; |
| } |
| } |
| ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); |
| poll_ccb_done = (ccb == poll_ccb) ? 1:0; |
| 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; |
| } |
| arcmsr_report_ccb_state(acb, ccb, flag_ccb); |
| } |
| } |
| |
| static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \ |
| struct CommandControlBlock *poll_ccb) |
| { |
| struct MessageUnit_B *reg = acb->pmuB; |
| struct CommandControlBlock *ccb; |
| uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0; |
| int index; |
| |
| polling_hbb_ccb_retry: |
| poll_count++; |
| /* clear doorbell interrupt */ |
| writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); |
| while (1) { |
| index = reg->doneq_index; |
| if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) { |
| if (poll_ccb_done) |
| break; |
| else { |
| msleep(25); |
| if (poll_count > 100) |
| break; |
| goto polling_hbb_ccb_retry; |
| } |
| } |
| writel(0, ®->done_qbuffer[index]); |
| index++; |
| /*if last index number set it to 0 */ |
| index %= ARCMSR_MAX_HBB_POSTQUEUE; |
| reg->doneq_index = index; |
| /* check ifcommand done with no error*/ |
| ccb = (struct CommandControlBlock *)\ |
| (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/ |
| poll_ccb_done = (ccb == poll_ccb) ? 1:0; |
| if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { |
| if (ccb->startdone == ARCMSR_CCB_ABORTED) { |
| 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); |
| 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; |
| } |
| arcmsr_report_ccb_state(acb, ccb, flag_ccb); |
| } /*drain reply FIFO*/ |
| } |
| |
| static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \ |
| struct CommandControlBlock *poll_ccb) |
| { |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| arcmsr_polling_hba_ccbdone(acb,poll_ccb); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| arcmsr_polling_hbb_ccbdone(acb,poll_ccb); |
| } |
| } |
| } |
| |
| static int arcmsr_iop_confirm(struct AdapterControlBlock *acb) |
| { |
| uint32_t cdb_phyaddr, ccb_phyaddr_hi32; |
| dma_addr_t dma_coherent_handle; |
| /* |
| ******************************************************************** |
| ** here we need to tell iop 331 our freeccb.HighPart |
| ** if freeccb.HighPart is not zero |
| ******************************************************************** |
| */ |
| dma_coherent_handle = acb->dma_coherent_handle; |
| cdb_phyaddr = (uint32_t)(dma_coherent_handle); |
| ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16); |
| /* |
| *********************************************************************** |
| ** if adapter type B, set window of "post command Q" |
| *********************************************************************** |
| */ |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| if (ccb_phyaddr_hi32 != 0) { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| uint32_t intmask_org; |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| 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_hba_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE "arcmsr%d: ""set ccb high \ |
| part physical address timeout\n", |
| acb->host->host_no); |
| return 1; |
| } |
| arcmsr_enable_outbound_ints(acb, intmask_org); |
| } |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| unsigned long post_queue_phyaddr; |
| uint32_t __iomem *rwbuffer; |
| |
| struct MessageUnit_B *reg = acb->pmuB; |
| uint32_t intmask_org; |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| reg->postq_index = 0; |
| reg->doneq_index = 0; |
| writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg); |
| if (arcmsr_hbb_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \ |
| acb->host->host_no); |
| return 1; |
| } |
| post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \ |
| sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ; |
| rwbuffer = reg->msgcode_rwbuffer_reg; |
| /* driver "set config" signature */ |
| writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++); |
| /* normal should be zero */ |
| writel(ccb_phyaddr_hi32, rwbuffer++); |
| /* postQ size (256 + 8)*4 */ |
| writel(post_queue_phyaddr, rwbuffer++); |
| /* doneQ size (256 + 8)*4 */ |
| writel(post_queue_phyaddr + 1056, rwbuffer++); |
| /* ccb maxQ size must be --> [(256 + 8)*4]*/ |
| writel(1056, rwbuffer); |
| |
| writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg); |
| if (arcmsr_hbb_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \ |
| timeout \n",acb->host->host_no); |
| return 1; |
| } |
| |
| writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg); |
| if (arcmsr_hbb_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\ |
| ,acb->host->host_no); |
| return 1; |
| } |
| arcmsr_enable_outbound_ints(acb, intmask_org); |
| } |
| break; |
| } |
| return 0; |
| } |
| |
| static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb) |
| { |
| uint32_t firmware_state = 0; |
| |
| switch (acb->adapter_type) { |
| |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| do { |
| firmware_state = readl(®->outbound_msgaddr1); |
| } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| do { |
| firmware_state = readl(reg->iop2drv_doorbell_reg); |
| } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0); |
| } |
| break; |
| } |
| } |
| |
| static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| acb->acb_flags |= ACB_F_MSG_START_BGRB; |
| writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0); |
| if (arcmsr_hba_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ |
| rebulid' timeout \n", acb->host->host_no); |
| } |
| } |
| |
| static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb) |
| { |
| struct MessageUnit_B *reg = acb->pmuB; |
| acb->acb_flags |= ACB_F_MSG_START_BGRB; |
| writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg); |
| if (arcmsr_hbb_wait_msgint_ready(acb)) { |
| printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ |
| rebulid' timeout \n",acb->host->host_no); |
| } |
| } |
| |
| static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: |
| arcmsr_start_hba_bgrb(acb); |
| break; |
| case ACB_ADAPTER_TYPE_B: |
| arcmsr_start_hbb_bgrb(acb); |
| break; |
| } |
| } |
| |
| static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb) |
| { |
| switch (acb->adapter_type) { |
| case ACB_ADAPTER_TYPE_A: { |
| struct MessageUnit_A __iomem *reg = acb->pmuA; |
| uint32_t outbound_doorbell; |
| /* empty doorbell Qbuffer if door bell ringed */ |
| outbound_doorbell = readl(®->outbound_doorbell); |
| /*clear doorbell interrupt */ |
| writel(outbound_doorbell, ®->outbound_doorbell); |
| writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); |
| } |
| break; |
| |
| case ACB_ADAPTER_TYPE_B: { |
| struct MessageUnit_B *reg = acb->pmuB; |
| /*clear interrupt and message state*/ |
| writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); |
| writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); |
| /* let IOP know data has been read */ |
| } |
| break; |
| } |
| } |
| |
| static void arcmsr_iop_init(struct AdapterControlBlock *acb) |
| { |
| uint32_t intmask_org; |
| |
| arcmsr_wait_firmware_ready(acb); |
| arcmsr_iop_confirm(acb); |
| /* disable all outbound interrupt */ |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| arcmsr_get_firmware_spec(acb); |
| /*start background rebuild*/ |
| arcmsr_start_adapter_bgrb(acb); |
| /* empty doorbell Qbuffer if door bell ringed */ |
| arcmsr_clear_doorbell_queue_buffer(acb); |
| /* enable outbound Post Queue,outbound doorbell Interrupt */ |
| arcmsr_enable_outbound_ints(acb, intmask_org); |
| acb->acb_flags |= ACB_F_IOP_INITED; |
| } |
| |
| static void arcmsr_iop_reset(struct AdapterControlBlock *acb) |
| { |
| 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*/ |
| ssleep(3); |
| |
| /* disable all outbound interrupt */ |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| /* clear all outbound posted Q */ |
| arcmsr_done4abort_postqueue(acb); |
| 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; |
| arcmsr_ccb_complete(ccb, 1); |
| } |
| } |
| /* enable all outbound interrupt */ |
| arcmsr_enable_outbound_ints(acb, intmask_org); |
| } |
| } |
| |
| 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);/* FIXME: need spinlock */ |
| 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. |
| */ |
| ssleep(3); |
| |
| 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_1200: |
| case PCI_DEVICE_ID_ARECA_1202: |
| 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_1201: |
| 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; |
| } |
| #ifdef CONFIG_SCSI_ARCMSR_AER |
| static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *host = pci_get_drvdata(pdev); |
| struct AdapterControlBlock *acb = |
| (struct AdapterControlBlock *) host->hostdata; |
| uint32_t intmask_org; |
| int i, j; |
| |
| if (pci_enable_device(pdev)) { |
| return PCI_ERS_RESULT_DISCONNECT; |
| } |
| pci_set_master(pdev); |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | |
| ACB_F_MESSAGE_RQBUFFER_CLEARED | |
| ACB_F_MESSAGE_WQBUFFER_READED); |
| acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; |
| for (i = 0; i < ARCMSR_MAX_TARGETID; i++) |
| for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) |
| acb->devstate[i][j] = ARECA_RAID_GONE; |
| |
| arcmsr_wait_firmware_ready(acb); |
| arcmsr_iop_confirm(acb); |
| /* disable all outbound interrupt */ |
| arcmsr_get_firmware_spec(acb); |
| /*start background rebuild*/ |
| arcmsr_start_adapter_bgrb(acb); |
| /* empty doorbell Qbuffer if door bell ringed */ |
| arcmsr_clear_doorbell_queue_buffer(acb); |
| /* enable outbound Post Queue,outbound doorbell Interrupt */ |
| arcmsr_enable_outbound_ints(acb, intmask_org); |
| acb->acb_flags |= ACB_F_IOP_INITED; |
| |
| pci_enable_pcie_error_reporting(pdev); |
| return PCI_ERS_RESULT_RECOVERED; |
| } |
| |
| static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *host = pci_get_drvdata(pdev); |
| struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata; |
| 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*/ |
| ssleep(3); |
| /* disable all outbound interrupt */ |
| intmask_org = arcmsr_disable_outbound_ints(acb); |
| /* clear all outbound posted Q */ |
| arcmsr_done4abort_postqueue(acb); |
| 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; |
| arcmsr_ccb_complete(ccb, 1); |
| } |
| } |
| /* enable all outbound interrupt */ |
| arcmsr_enable_outbound_ints(acb, intmask_org); |
| } |
| pci_disable_device(pdev); |
| } |
| |
| static void arcmsr_pci_ers_disconnect_forepart(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 pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, |
| pci_channel_state_t state) |
| { |
| switch (state) { |
| case pci_channel_io_frozen: |
| arcmsr_pci_ers_need_reset_forepart(pdev); |
| return PCI_ERS_RESULT_NEED_RESET; |
| case pci_channel_io_perm_failure: |
| arcmsr_pci_ers_disconnect_forepart(pdev); |
| return PCI_ERS_RESULT_DISCONNECT; |
| break; |
| default: |
| return PCI_ERS_RESULT_NEED_RESET; |
| } |
| } |
| #endif |