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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [scsi/] [megaraid2.c] - Rev 1275
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/* * * Linux MegaRAID device driver * * Copyright (c) 2002 LSI Logic Corporation. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * Copyright (c) 2002 Red Hat, Inc. All rights reserved. * - fixes * - speed-ups (list handling fixes, issued_list, optimizations.) * - lots of cleanups. * * Version : v2.10.1 (Dec 03, 2003) - Atul Mukker <Atul.Mukker@lsil.com> * * Description: Linux device driver for LSI Logic MegaRAID controller * * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 * 518, 520, 531, 532 * * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, * and others. Please send updates to the public mailing list * linux-megaraid-devel@dell.com, and subscribe to and read archives of this * list at http://lists.us.dell.com/. * * For history of changes, see ChangeLog.megaraid. * */ #include <linux/mm.h> #include <linux/fs.h> #include <linux/blk.h> #include <asm/uaccess.h> #include <linux/delay.h> #include <linux/reboot.h> #include <linux/module.h> #include <linux/list.h> #include "sd.h" #include "scsi.h" #include "hosts.h" #include "megaraid2.h" MODULE_AUTHOR ("LSI Logic Corporation"); MODULE_DESCRIPTION ("LSI Logic MegaRAID driver"); MODULE_LICENSE ("GPL"); static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; MODULE_PARM(max_cmd_per_lun, "i"); MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)"); static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; MODULE_PARM(max_sectors_per_io, "h"); MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; MODULE_PARM(max_mbox_busy_wait, "h"); MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); #define RDINDOOR(adapter) readl((adapter)->base + 0x20) #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C) #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20) #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C) /* * Global variables */ static int hba_count; static adapter_t *hba_soft_state[MAX_CONTROLLERS]; #ifdef CONFIG_PROC_FS static struct proc_dir_entry *mega_proc_dir_entry; #endif static struct notifier_block mega_notifier = { .notifier_call = megaraid_reboot_notify }; /* For controller re-ordering */ static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; /* * The File Operations structure for the serial/ioctl interface of the driver */ static struct file_operations megadev_fops = { .ioctl = megadev_ioctl, .open = megadev_open, .release = megadev_close, .owner = THIS_MODULE, }; /* * Array to structures for storing the information about the controllers. This * information is sent to the user level applications, when they do an ioctl * for this information. */ static struct mcontroller mcontroller[MAX_CONTROLLERS]; /* The current driver version */ static u32 driver_ver = 0x02100000; /* major number used by the device for character interface */ static int major; #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) /* * Debug variable to print some diagnostic messages */ static int trace_level; /* * megaraid_validate_parms() * * Validate that any module parms passed in * have proper values. */ static void megaraid_validate_parms(void) { if( (max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN) ) max_cmd_per_lun = MAX_CMD_PER_LUN; if( max_mbox_busy_wait > MBOX_BUSY_WAIT ) max_mbox_busy_wait = MBOX_BUSY_WAIT; } /** * megaraid_detect() * @host_template - Our soft state maintained by mid-layer * * the detect entry point for the mid-layer. * We scan the PCI bus for our controllers and start them. * * Note: PCI_DEVICE_ID_PERC4_DI below represents the PERC4/Di class of * products. All of them share the same vendor id, device id, and subsystem * vendor id but different subsystem ids. As of now, driver does not use the * subsystem id. * PERC4E device ids are for the PCI-Express controllers */ static int megaraid_detect(Scsi_Host_Template *host_template) { int i; u16 dev_sw_table[] = { /* Table of all supported vendor/device ids */ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SATA_PCIX, PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4E_DC_SC, PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4E_SI_DI, PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY, PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI, PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE, PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3 }; printk(KERN_NOTICE "megaraid: " MEGARAID_VERSION); megaraid_validate_parms(); /* * Scan PCI bus for our all devices. */ for( i = 0; i < sizeof(dev_sw_table)/sizeof(u16); i += 2 ) { mega_find_card(host_template, dev_sw_table[i], dev_sw_table[i+1]); } if(hba_count) { /* * re-order hosts so that one with bootable logical drive * comes first */ mega_reorder_hosts(); #ifdef CONFIG_PROC_FS mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root); if(!mega_proc_dir_entry) { printk(KERN_WARNING "megaraid: failed to create megaraid root\n"); } else { for(i = 0; i < hba_count; i++) { mega_create_proc_entry(i, mega_proc_dir_entry); } } #endif /* * Register the driver as a character device, for applications * to access it for ioctls. * First argument (major) to register_chrdev implies a dynamic * major number allocation. */ major = register_chrdev(0, "megadev", &megadev_fops); /* * Register the Shutdown Notification hook in kernel */ if(register_reboot_notifier(&mega_notifier)) { printk(KERN_WARNING "MegaRAID Shutdown routine not registered!!\n"); } } return hba_count; } /** * mega_find_card() - find and start this controller * @host_template - Our soft state maintained by mid-layer * @pci_vendor - pci vendor id for this controller * @pci_device - pci device id for this controller * * Scans the PCI bus for this vendor and device id combination, setup the * resources, and register ourselves as a SCSI HBA driver, and setup all * parameters for our soft state. * * This routine also checks for some buggy firmware and ajust the flags * accordingly. */ static void mega_find_card(Scsi_Host_Template *host_template, u16 pci_vendor, u16 pci_device) { struct Scsi_Host *host = NULL; adapter_t *adapter = NULL; u32 magic64; unsigned long mega_baseport; u16 subsysid, subsysvid; u8 pci_bus; u8 pci_dev_func; u8 irq; struct pci_dev *pdev = NULL; u8 did_ioremap_f = 0; u8 did_req_region_f = 0; u8 did_scsi_reg_f = 0; u8 alloc_int_buf_f = 0; u8 alloc_scb_f = 0; u8 got_irq_f = 0; u8 did_setup_mbox_f = 0; unsigned long tbase; unsigned long flag = 0; int i, j; while((pdev = pci_find_device(pci_vendor, pci_device, pdev))) { // reset flags for all controllers in this class did_ioremap_f = 0; did_req_region_f = 0; did_scsi_reg_f = 0; alloc_int_buf_f = 0; alloc_scb_f = 0; got_irq_f = 0; did_setup_mbox_f = 0; if(pci_enable_device (pdev)) continue; pci_bus = pdev->bus->number; pci_dev_func = pdev->devfn; /* * For these vendor and device ids, signature offsets are not * valid and 64 bit is implicit */ if( (pci_vendor == PCI_VENDOR_ID_DELL && pci_device == PCI_DEVICE_ID_PERC4_DI) || (pci_vendor == PCI_VENDOR_ID_LSI_LOGIC && pci_device == PCI_DEVICE_ID_PERC4_QC_VERDE) || (pci_vendor == PCI_VENDOR_ID_LSI_LOGIC && pci_device == PCI_DEVICE_ID_PERC4E_DC_SC) || (pci_vendor == PCI_VENDOR_ID_DELL && pci_device == PCI_DEVICE_ID_PERC4E_SI_DI) || (pci_vendor == PCI_VENDOR_ID_LSI_LOGIC && pci_device == PCI_DEVICE_ID_LSI_SATA_PCIX)) { flag |= BOARD_64BIT; } else { pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); if (magic64 == HBA_SIGNATURE_64BIT) flag |= BOARD_64BIT; } subsysvid = pdev->subsystem_vendor; subsysid = pdev->subsystem_device; /* * If we do not find the valid subsys vendor id, refuse to * load the driver. This is part of PCI200X compliance * We load the driver if subsysvid is 0. */ if( subsysvid && (subsysvid != AMI_SUBSYS_VID) && (subsysvid != DELL_SUBSYS_VID) && (subsysvid != HP_SUBSYS_VID) && (subsysvid != INTEL_SUBSYS_VID) && (subsysvid != LSI_SUBSYS_VID) ) continue; printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", pci_vendor, pci_device, pci_bus); printk("slot %d:func %d\n", PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); /* Read the base port and IRQ from PCI */ mega_baseport = pci_resource_start(pdev, 0); irq = pdev->irq; tbase = mega_baseport; if( pci_resource_flags(pdev, 0) & IORESOURCE_MEM ) { if( check_mem_region(mega_baseport, 128) ) { printk(KERN_WARNING "megaraid: mem region busy!\n"); continue; } request_mem_region(mega_baseport, 128, "MegaRAID: LSI Logic Corporation."); mega_baseport = (unsigned long)ioremap(mega_baseport, 128); if( !mega_baseport ) { printk(KERN_WARNING "megaraid: could not map hba memory\n"); release_mem_region(tbase, 128); continue; } flag |= BOARD_MEMMAP; did_ioremap_f = 1; } else { mega_baseport += 0x10; if( !request_region(mega_baseport, 16, "megaraid") ) goto fail_attach; flag |= BOARD_IOMAP; did_req_region_f = 1; } /* Initialize SCSI Host structure */ host = scsi_register(host_template, sizeof(adapter_t)); if(!host) goto fail_attach; did_scsi_reg_f = 1; scsi_set_pci_device(host, pdev); adapter = (adapter_t *)host->hostdata; memset(adapter, 0, sizeof(adapter_t)); printk(KERN_NOTICE "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", host->host_no, mega_baseport, irq); adapter->base = mega_baseport; /* Copy resource info into structure */ INIT_LIST_HEAD(&adapter->free_list); INIT_LIST_HEAD(&adapter->pending_list); adapter->flag = flag; spin_lock_init(&adapter->lock); #ifdef SCSI_HAS_HOST_LOCK # if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,9) /* This is the Red Hat AS2.1 kernel */ adapter->host_lock = &adapter->lock; host->lock = adapter->host_lock; # elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) /* This is the later Red Hat 2.4 kernels */ adapter->host_lock = &adapter->lock; host->host_lock = adapter->host_lock; # else /* This is the 2.6 and later kernel series */ adapter->host_lock = &adapter->lock; scsi_set_host_lock(&adapter->lock); # endif #else /* And this is the remainder of the 2.4 kernel series */ adapter->host_lock = &io_request_lock; #endif host->cmd_per_lun = max_cmd_per_lun; host->max_sectors = max_sectors_per_io; adapter->dev = pdev; adapter->host = host; adapter->host->irq = irq; if( flag & BOARD_MEMMAP ) { adapter->host->base = tbase; } else { adapter->host->io_port = tbase; adapter->host->n_io_port = 16; } adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; /* * Allocate buffer to issue internal commands. */ adapter->mega_buffer = pci_alloc_consistent(adapter->dev, MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); if( !adapter->mega_buffer ) { printk(KERN_WARNING "megaraid: out of RAM.\n"); goto fail_attach; } alloc_int_buf_f = 1; adapter->scb_list = kmalloc(sizeof(scb_t)*MAX_COMMANDS, GFP_KERNEL); if(!adapter->scb_list) { printk(KERN_WARNING "megaraid: out of RAM.\n"); goto fail_attach; } alloc_scb_f = 1; /* Request our IRQ */ if( adapter->flag & BOARD_MEMMAP ) { if(request_irq(irq, megaraid_isr_memmapped, SA_SHIRQ, "megaraid", adapter)) { printk(KERN_WARNING "megaraid: Couldn't register IRQ %d!\n", irq); goto fail_attach; } } else { if(request_irq(irq, megaraid_isr_iomapped, SA_SHIRQ, "megaraid", adapter)) { printk(KERN_WARNING "megaraid: Couldn't register IRQ %d!\n", irq); goto fail_attach; } } got_irq_f = 1; if( mega_setup_mailbox(adapter) != 0 ) goto fail_attach; did_setup_mbox_f = 1; if( mega_query_adapter(adapter) != 0 ) goto fail_attach; /* * Have checks for some buggy f/w */ if((subsysid == 0x1111) && (subsysvid == 0x1111)) { /* * Which firmware */ if (!strcmp(adapter->fw_version, "3.00") || !strcmp(adapter->fw_version, "3.01")) { printk( KERN_WARNING "megaraid: Your card is a Dell PERC " "2/SC RAID controller with " "firmware\nmegaraid: 3.00 or 3.01. " "This driver is known to have " "corruption issues\nmegaraid: with " "those firmware versions on this " "specific card. In order\nmegaraid: " "to protect your data, please upgrade " "your firmware to version\nmegaraid: " "3.10 or later, available from the " "Dell Technical Support web\n" "megaraid: site at\nhttp://support." "dell.com/us/en/filelib/download/" "index.asp?fileid=2940\n" ); } } /* * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit * support, since this firmware cannot handle 64 bit * addressing */ if((subsysvid == HP_SUBSYS_VID) && ((subsysid == 0x60E7)||(subsysid == 0x60E8))) { /* * which firmware */ if( !strcmp(adapter->fw_version, "H01.07") || !strcmp(adapter->fw_version, "H01.08") || !strcmp(adapter->fw_version, "H01.09") ) { printk(KERN_WARNING "megaraid: Firmware H.01.07, " "H.01.08, and H.01.09 on 1M/2M " "controllers\n" "megaraid: do not support 64 bit " "addressing.\nmegaraid: DISABLING " "64 bit support.\n"); adapter->flag &= ~BOARD_64BIT; } } if(mega_is_bios_enabled(adapter)) { mega_hbas[hba_count].is_bios_enabled = 1; } mega_hbas[hba_count].hostdata_addr = adapter; /* * Find out which channel is raid and which is scsi. This is * for ROMB support. */ mega_enum_raid_scsi(adapter); /* * Find out if a logical drive is set as the boot drive. If * there is one, will make that as the first logical drive. * ROMB: Do we have to boot from a physical drive. Then all * the physical drives would appear before the logical disks. * Else, all the physical drives would be exported to the mid * layer after logical drives. */ mega_get_boot_drv(adapter); if( ! adapter->boot_pdrv_enabled ) { for( i = 0; i < NVIRT_CHAN; i++ ) adapter->logdrv_chan[i] = 1; for( i = NVIRT_CHAN; i<MAX_CHANNELS+NVIRT_CHAN; i++ ) adapter->logdrv_chan[i] = 0; adapter->mega_ch_class <<= NVIRT_CHAN; } else { j = adapter->product_info.nchannels; for( i = 0; i < j; i++ ) adapter->logdrv_chan[i] = 0; for( i = j; i < NVIRT_CHAN + j; i++ ) adapter->logdrv_chan[i] = 1; } /* * Do we support random deletion and addition of logical * drives */ adapter->read_ldidmap = 0; /* set it after first logdrv delete cmd */ adapter->support_random_del = mega_support_random_del(adapter); /* Initialize SCBs */ if(mega_init_scb(adapter)) { goto fail_attach; } /* * Reset the pending commands counter */ atomic_set(&adapter->pend_cmds, 0); /* * Reset the adapter quiescent flag */ atomic_set(&adapter->quiescent, 0); hba_soft_state[hba_count] = adapter; /* * Fill in the structure which needs to be passed back to the * application when it does an ioctl() for controller related * information. */ i = hba_count; mcontroller[i].base = mega_baseport; mcontroller[i].irq = irq; mcontroller[i].numldrv = adapter->numldrv; mcontroller[i].pcibus = pci_bus; mcontroller[i].pcidev = pci_device; mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); mcontroller[i].pciid = -1; mcontroller[i].pcivendor = pci_vendor; mcontroller[i].pcislot = PCI_SLOT (pci_dev_func); mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; /* Set the Mode of addressing to 64 bit if we can */ if((adapter->flag & BOARD_64BIT)&&(sizeof(dma_addr_t) == 8)) { pci_set_dma_mask(pdev, 0xffffffffffffffffULL); adapter->has_64bit_addr = 1; } else { pci_set_dma_mask(pdev, 0xffffffff); adapter->has_64bit_addr = 0; } init_MUTEX(&adapter->int_mtx); init_waitqueue_head(&adapter->int_waitq); adapter->this_id = DEFAULT_INITIATOR_ID; adapter->host->this_id = DEFAULT_INITIATOR_ID; #if MEGA_HAVE_CLUSTERING /* * Is cluster support enabled on this controller * Note: In a cluster the HBAs ( the initiators ) will have * different target IDs and we cannot assume it to be 7. Call * to mega_support_cluster() will get the target ids also if * the cluster support is available */ adapter->has_cluster = mega_support_cluster(adapter); if( adapter->has_cluster ) { printk(KERN_NOTICE "megaraid: Cluster driver, initiator id:%d\n", adapter->this_id); } #endif hba_count++; continue; fail_attach: if( did_setup_mbox_f ) { pci_free_consistent(adapter->dev, sizeof(mbox64_t), (void *)adapter->una_mbox64, adapter->una_mbox64_dma); } if( got_irq_f ) { irq_disable(adapter); free_irq(adapter->host->irq, adapter); } if( alloc_scb_f ) { kfree(adapter->scb_list); } if( alloc_int_buf_f ) { pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, (void *)adapter->mega_buffer, adapter->buf_dma_handle); } if( did_scsi_reg_f ) scsi_unregister(host); if( did_ioremap_f ) { iounmap((void *)mega_baseport); release_mem_region(tbase, 128); } if( did_req_region_f ) release_region(mega_baseport, 16); } return; } /** * mega_setup_mailbox() * @adapter - pointer to our soft state * * Allocates a 8 byte aligned memory for the handshake mailbox. */ static int mega_setup_mailbox(adapter_t *adapter) { unsigned long align; adapter->una_mbox64 = pci_alloc_consistent(adapter->dev, sizeof(mbox64_t), &adapter->una_mbox64_dma); if( !adapter->una_mbox64 ) return -1; adapter->mbox = &adapter->una_mbox64->mbox; adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & (~0UL ^ 0xFUL)); adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; /* * Register the mailbox if the controller is an io-mapped controller */ if( adapter->flag & BOARD_IOMAP ) { outb_p(adapter->mbox_dma & 0xFF, adapter->host->io_port + MBOX_PORT0); outb_p((adapter->mbox_dma >> 8) & 0xFF, adapter->host->io_port + MBOX_PORT1); outb_p((adapter->mbox_dma >> 16) & 0xFF, adapter->host->io_port + MBOX_PORT2); outb_p((adapter->mbox_dma >> 24) & 0xFF, adapter->host->io_port + MBOX_PORT3); outb_p(ENABLE_MBOX_BYTE, adapter->host->io_port + ENABLE_MBOX_REGION); irq_ack(adapter); irq_enable(adapter); } return 0; } /* * mega_query_adapter() * @adapter - pointer to our soft state * * Issue the adapter inquiry commands to the controller and find out * information and parameter about the devices attached */ static int mega_query_adapter(adapter_t *adapter) { dma_addr_t prod_info_dma_handle; mega_inquiry3 *inquiry3; u8 raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; int retval; /* Initialize adapter inquiry mailbox */ mbox = (mbox_t *)raw_mbox; memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); memset(raw_mbox, 0, sizeof(raw_mbox)); /* * Try to issue Inquiry3 command * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and * update enquiry3 structure */ mbox->xferaddr = (u32)adapter->buf_dma_handle; inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ /* Issue a blocking command to the card */ if ((retval = issue_scb_block(adapter, raw_mbox))) { /* the adapter does not support 40ld */ mraid_ext_inquiry *ext_inq; mraid_inquiry *inq; dma_addr_t dma_handle; ext_inq = pci_alloc_consistent(adapter->dev, sizeof(mraid_ext_inquiry), &dma_handle); if( ext_inq == NULL ) return -1; inq = &ext_inq->raid_inq; mbox->xferaddr = (u32)dma_handle; /*issue old 0x04 command to adapter */ mbox->cmd = MEGA_MBOXCMD_ADPEXTINQ; issue_scb_block(adapter, raw_mbox); /* * update Enquiry3 and ProductInfo structures with * mraid_inquiry structure */ mega_8_to_40ld(inq, inquiry3, (mega_product_info *)&adapter->product_info); pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry), ext_inq, dma_handle); } else { /*adapter supports 40ld */ adapter->flag |= BOARD_40LD; /* * get product_info, which is static information and will be * unchanged */ prod_info_dma_handle = pci_map_single(adapter->dev, (void *) &adapter->product_info, sizeof(mega_product_info), PCI_DMA_FROMDEVICE); mbox->xferaddr = prod_info_dma_handle; raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ if ((retval = issue_scb_block(adapter, raw_mbox))) printk(KERN_WARNING "megaraid: Product_info cmd failed with error: %d\n", retval); pci_dma_sync_single(adapter->dev, prod_info_dma_handle, sizeof(mega_product_info), PCI_DMA_FROMDEVICE); pci_unmap_single(adapter->dev, prod_info_dma_handle, sizeof(mega_product_info), PCI_DMA_FROMDEVICE); } /* * kernel scans the channels from 0 to <= max_channel */ adapter->host->max_channel = adapter->product_info.nchannels + NVIRT_CHAN -1; adapter->host->max_id = 16; /* max targets per channel */ adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */ adapter->host->cmd_per_lun = max_cmd_per_lun; adapter->numldrv = inquiry3->num_ldrv; adapter->max_cmds = adapter->product_info.max_commands; if(adapter->max_cmds > MAX_COMMANDS) adapter->max_cmds = MAX_COMMANDS; adapter->host->can_queue = adapter->max_cmds - 1; /* * Get the maximum number of scatter-gather elements supported by this * firmware */ mega_get_max_sgl(adapter); adapter->host->sg_tablesize = adapter->sglen; /* use HP firmware and bios version encoding */ if (adapter->product_info.subsysvid == HP_SUBSYS_VID) { sprintf (adapter->fw_version, "%c%d%d.%d%d", adapter->product_info.fw_version[2], adapter->product_info.fw_version[1] >> 8, adapter->product_info.fw_version[1] & 0x0f, adapter->product_info.fw_version[0] >> 8, adapter->product_info.fw_version[0] & 0x0f); sprintf (adapter->bios_version, "%c%d%d.%d%d", adapter->product_info.bios_version[2], adapter->product_info.bios_version[1] >> 8, adapter->product_info.bios_version[1] & 0x0f, adapter->product_info.bios_version[0] >> 8, adapter->product_info.bios_version[0] & 0x0f); } else { memcpy(adapter->fw_version, (char *)adapter->product_info.fw_version, 4); adapter->fw_version[4] = 0; memcpy(adapter->bios_version, (char *)adapter->product_info.bios_version, 4); adapter->bios_version[4] = 0; } printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n", adapter->fw_version, adapter->bios_version, adapter->numldrv); /* * Do we support extended (>10 bytes) cdbs */ adapter->support_ext_cdb = mega_support_ext_cdb(adapter); if (adapter->support_ext_cdb) printk(KERN_NOTICE "megaraid: supports extended CDBs.\n"); return 0; } /* * megaraid_queue() * @scmd - Issue this scsi command * @done - the callback hook into the scsi mid-layer * * The command queuing entry point for the mid-layer. */ static int megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *)) { adapter_t *adapter; scb_t *scb; int busy=0; adapter = (adapter_t *)scmd->host->hostdata; scmd->scsi_done = done; /* * Allocate and build a SCB request * busy flag will be set if mega_build_cmd() command could not * allocate scb. We will return non-zero status in that case. * NOTE: scb can be null even though certain commands completed * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would * return 0 in that case. */ scb = mega_build_cmd(adapter, scmd, &busy); if(scb) { scb->state |= SCB_PENDQ; list_add_tail(&scb->list, &adapter->pending_list); /* * Check if the HBA is in quiescent state, e.g., during a * delete logical drive opertion. If it is, don't run * the pending_list. */ if(atomic_read(&adapter->quiescent) == 0) { mega_runpendq(adapter); } return 0; } return busy; } /** * mega_build_cmd() * @adapter - pointer to our soft state * @cmd - Prepare using this scsi command * @busy - busy flag if no resources * * Prepares a command and scatter gather list for the controller. This routine * also finds out if the commands is intended for a logical drive or a * physical device and prepares the controller command accordingly. * * We also re-order the logical drives and physical devices based on their * boot settings. */ static scb_t * mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) { mega_ext_passthru *epthru; mega_passthru *pthru; scb_t *scb; mbox_t *mbox; long seg; char islogical; int max_ldrv_num; int channel = 0; int target = 0; int ldrv_num = 0; /* logical drive number */ /* * filter the internal and ioctl commands */ if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) { return cmd->buffer; } /* * We know what channels our logical drives are on - mega_find_card() */ islogical = adapter->logdrv_chan[cmd->channel]; /* * The theory: If physical drive is chosen for boot, all the physical * devices are exported before the logical drives, otherwise physical * devices are pushed after logical drives, in which case - Kernel sees * the physical devices on virtual channel which is obviously converted * to actual channel on the HBA. */ if( adapter->boot_pdrv_enabled ) { if( islogical ) { /* logical channel */ channel = cmd->channel - adapter->product_info.nchannels; } else { channel = cmd->channel; /* this is physical channel */ target = cmd->target; /* * boot from a physical disk, that disk needs to be * exposed first IF both the channels are SCSI, then * booting from the second channel is not allowed. */ if( target == 0 ) { target = adapter->boot_pdrv_tgt; } else if( target == adapter->boot_pdrv_tgt ) { target = 0; } } } else { if( islogical ) { channel = cmd->channel; /* this is the logical channel */ } else { channel = cmd->channel - NVIRT_CHAN; /* physical channel */ target = cmd->target; } } if(islogical) { /* have just LUN 0 for each target on virtual channels */ if (cmd->lun) { cmd->result = (DID_BAD_TARGET << 16); cmd->scsi_done(cmd); return NULL; } ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); max_ldrv_num = (adapter->flag & BOARD_40LD) ? MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; /* * max_ldrv_num increases by 0x80 if some logical drive was * deleted. */ if(adapter->read_ldidmap) max_ldrv_num += 0x80; if(ldrv_num > max_ldrv_num ) { cmd->result = (DID_BAD_TARGET << 16); cmd->scsi_done(cmd); return NULL; } } else { if( cmd->lun > 7) { /* * Do not support lun >7 for physically accessed * devices */ cmd->result = (DID_BAD_TARGET << 16); cmd->scsi_done(cmd); return NULL; } } /* * * Logical drive commands * */ if(islogical) { switch (cmd->cmnd[0]) { case TEST_UNIT_READY: memset(cmd->request_buffer, 0, cmd->request_bufflen); #if MEGA_HAVE_CLUSTERING /* * Do we support clustering and is the support enabled * If no, return success always */ if( !adapter->has_cluster ) { cmd->result = (DID_OK << 16); cmd->scsi_done(cmd); return NULL; } if(!(scb = mega_allocate_scb(adapter, cmd))) { cmd->result = (DID_ERROR << 16); cmd->scsi_done(cmd); *busy = 1; return NULL; } scb->raw_mbox[0] = MEGA_CLUSTER_CMD; scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; scb->raw_mbox[3] = ldrv_num; scb->dma_direction = PCI_DMA_NONE; return scb; #else cmd->result = (DID_OK << 16); cmd->scsi_done(cmd); return NULL; #endif case MODE_SENSE: memset(cmd->request_buffer, 0, cmd->cmnd[4]); cmd->result = (DID_OK << 16); cmd->scsi_done(cmd); return NULL; case READ_CAPACITY: case INQUIRY: if(!(adapter->flag & (1L << cmd->channel))) { printk(KERN_NOTICE "scsi%d: scanning scsi channel %d ", adapter->host->host_no, cmd->channel); printk("for logical drives.\n"); adapter->flag |= (1L << cmd->channel); } /* Allocate a SCB and initialize passthru */ if(!(scb = mega_allocate_scb(adapter, cmd))) { cmd->result = (DID_ERROR << 16); cmd->scsi_done(cmd); *busy = 1; return NULL; } pthru = scb->pthru; mbox = (mbox_t *)scb->raw_mbox; memset(mbox, 0, sizeof(scb->raw_mbox)); memset(pthru, 0, sizeof(mega_passthru)); pthru->timeout = 0; pthru->ars = 1; pthru->reqsenselen = 14; pthru->islogical = 1; pthru->logdrv = ldrv_num; pthru->cdblen = cmd->cmd_len; memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); if( adapter->has_64bit_addr ) { mbox->cmd = MEGA_MBOXCMD_PASSTHRU64; } else { mbox->cmd = MEGA_MBOXCMD_PASSTHRU; } scb->dma_direction = PCI_DMA_FROMDEVICE; pthru->numsgelements = mega_build_sglist(adapter, scb, &pthru->dataxferaddr, &pthru->dataxferlen); mbox->xferaddr = scb->pthru_dma_addr; return scb; case READ_6: case WRITE_6: case READ_10: case WRITE_10: case READ_12: case WRITE_12: /* Allocate a SCB and initialize mailbox */ if(!(scb = mega_allocate_scb(adapter, cmd))) { cmd->result = (DID_ERROR << 16); cmd->scsi_done(cmd); *busy = 1; return NULL; } mbox = (mbox_t *)scb->raw_mbox; memset(mbox, 0, sizeof(scb->raw_mbox)); mbox->logdrv = ldrv_num; /* * A little hack: 2nd bit is zero for all scsi read * commands and is set for all scsi write commands */ if( adapter->has_64bit_addr ) { mbox->cmd = (*cmd->cmnd & 0x02) ? MEGA_MBOXCMD_LWRITE64: MEGA_MBOXCMD_LREAD64 ; } else { mbox->cmd = (*cmd->cmnd & 0x02) ? MEGA_MBOXCMD_LWRITE: MEGA_MBOXCMD_LREAD ; } /* * 6-byte READ(0x08) or WRITE(0x0A) cdb */ if( cmd->cmd_len == 6 ) { mbox->numsectors = (u32) cmd->cmnd[4]; mbox->lba = ((u32)cmd->cmnd[1] << 16) | ((u32)cmd->cmnd[2] << 8) | (u32)cmd->cmnd[3]; mbox->lba &= 0x1FFFFF; #if MEGA_HAVE_STATS /* * Take modulo 0x80, since the logical drive * number increases by 0x80 when a logical * drive was deleted */ if (*cmd->cmnd == READ_6) { adapter->nreads[ldrv_num%0x80]++; adapter->nreadblocks[ldrv_num%0x80] += mbox->numsectors; } else { adapter->nwrites[ldrv_num%0x80]++; adapter->nwriteblocks[ldrv_num%0x80] += mbox->numsectors; } #endif } /* * 10-byte READ(0x28) or WRITE(0x2A) cdb */ if( cmd->cmd_len == 10 ) { mbox->numsectors = (u32)cmd->cmnd[8] | ((u32)cmd->cmnd[7] << 8); mbox->lba = ((u32)cmd->cmnd[2] << 24) | ((u32)cmd->cmnd[3] << 16) | ((u32)cmd->cmnd[4] << 8) | (u32)cmd->cmnd[5]; #if MEGA_HAVE_STATS if (*cmd->cmnd == READ_10) { adapter->nreads[ldrv_num%0x80]++; adapter->nreadblocks[ldrv_num%0x80] += mbox->numsectors; } else { adapter->nwrites[ldrv_num%0x80]++; adapter->nwriteblocks[ldrv_num%0x80] += mbox->numsectors; } #endif } /* * 12-byte READ(0xA8) or WRITE(0xAA) cdb */ if( cmd->cmd_len == 12 ) { mbox->lba = ((u32)cmd->cmnd[2] << 24) | ((u32)cmd->cmnd[3] << 16) | ((u32)cmd->cmnd[4] << 8) | (u32)cmd->cmnd[5]; mbox->numsectors = ((u32)cmd->cmnd[6] << 24) | ((u32)cmd->cmnd[7] << 16) | ((u32)cmd->cmnd[8] << 8) | (u32)cmd->cmnd[9]; #if MEGA_HAVE_STATS if (*cmd->cmnd == READ_12) { adapter->nreads[ldrv_num%0x80]++; adapter->nreadblocks[ldrv_num%0x80] += mbox->numsectors; } else { adapter->nwrites[ldrv_num%0x80]++; adapter->nwriteblocks[ldrv_num%0x80] += mbox->numsectors; } #endif } /* * If it is a read command */ if( (*cmd->cmnd & 0x0F) == 0x08 ) { scb->dma_direction = PCI_DMA_FROMDEVICE; } else { scb->dma_direction = PCI_DMA_TODEVICE; } /* Calculate Scatter-Gather info */ mbox->numsgelements = mega_build_sglist(adapter, scb, (u32 *)&mbox->xferaddr, (u32 *)&seg); return scb; #if MEGA_HAVE_CLUSTERING case RESERVE: /* Fall through */ case RELEASE: /* * Do we support clustering and is the support enabled */ if( ! adapter->has_cluster ) { cmd->result = (DID_BAD_TARGET << 16); cmd->scsi_done(cmd); return NULL; } /* Allocate a SCB and initialize mailbox */ if(!(scb = mega_allocate_scb(adapter, cmd))) { cmd->result = (DID_ERROR << 16); cmd->scsi_done(cmd); *busy = 1; return NULL; } scb->raw_mbox[0] = MEGA_CLUSTER_CMD; scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? MEGA_RESERVE_LD : MEGA_RELEASE_LD; scb->raw_mbox[3] = ldrv_num; scb->dma_direction = PCI_DMA_NONE; return scb; #endif default: cmd->result = (DID_BAD_TARGET << 16); cmd->scsi_done(cmd); return NULL; } } /* * Passthru drive commands */ else { /* Allocate a SCB and initialize passthru */ if(!(scb = mega_allocate_scb(adapter, cmd))) { cmd->result = (DID_ERROR << 16); cmd->scsi_done(cmd); *busy = 1; return NULL; } mbox = (mbox_t *)scb->raw_mbox; memset(mbox, 0, sizeof(scb->raw_mbox)); if( adapter->support_ext_cdb ) { epthru = mega_prepare_extpassthru(adapter, scb, cmd, channel, target); mbox->cmd = MEGA_MBOXCMD_EXTPTHRU; mbox->xferaddr = scb->epthru_dma_addr; } else { pthru = mega_prepare_passthru(adapter, scb, cmd, channel, target); /* Initialize mailbox */ if( adapter->has_64bit_addr ) { mbox->cmd = MEGA_MBOXCMD_PASSTHRU64; } else { mbox->cmd = MEGA_MBOXCMD_PASSTHRU; } mbox->xferaddr = scb->pthru_dma_addr; } return scb; } return NULL; } /** * mega_prepare_passthru() * @adapter - pointer to our soft state * @scb - our scsi control block * @cmd - scsi command from the mid-layer * @channel - actual channel on the controller * @target - actual id on the controller. * * prepare a command for the scsi physical devices. */ static mega_passthru * mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, int channel, int target) { mega_passthru *pthru; pthru = scb->pthru; memset(pthru, 0, sizeof (mega_passthru)); /* 0=6sec/1=60sec/2=10min/3=3hrs */ pthru->timeout = 2; pthru->ars = 1; pthru->reqsenselen = 14; pthru->islogical = 0; pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; pthru->target = (adapter->flag & BOARD_40LD) ? (channel << 4) | target : target; pthru->cdblen = cmd->cmd_len; pthru->logdrv = cmd->lun; memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); /* Not sure about the direction */ scb->dma_direction = PCI_DMA_BIDIRECTIONAL; /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ switch (cmd->cmnd[0]) { case INQUIRY: case READ_CAPACITY: if(!(adapter->flag & (1L << cmd->channel))) { printk(KERN_NOTICE "scsi%d: scanning scsi channel %d [P%d] ", adapter->host->host_no, cmd->channel, channel); printk("for physical devices.\n"); adapter->flag |= (1L << cmd->channel); } /* Fall through */ default: pthru->numsgelements = mega_build_sglist(adapter, scb, &pthru->dataxferaddr, &pthru->dataxferlen); break; } return pthru; } /** * mega_prepare_extpassthru() * @adapter - pointer to our soft state * @scb - our scsi control block * @cmd - scsi command from the mid-layer * @channel - actual channel on the controller * @target - actual id on the controller. * * prepare a command for the scsi physical devices. This rountine prepares * commands for devices which can take extended CDBs (>10 bytes) */ static mega_ext_passthru * mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, int channel, int target) { mega_ext_passthru *epthru; epthru = scb->epthru; memset(epthru, 0, sizeof(mega_ext_passthru)); /* 0=6sec/1=60sec/2=10min/3=3hrs */ epthru->timeout = 2; epthru->ars = 1; epthru->reqsenselen = 14; epthru->islogical = 0; epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; epthru->target = (adapter->flag & BOARD_40LD) ? (channel << 4) | target : target; epthru->cdblen = cmd->cmd_len; epthru->logdrv = cmd->lun; memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); /* Not sure about the direction */ scb->dma_direction = PCI_DMA_BIDIRECTIONAL; switch(cmd->cmnd[0]) { case INQUIRY: case READ_CAPACITY: if(!(adapter->flag & (1L << cmd->channel))) { printk(KERN_NOTICE "scsi%d: scanning scsi channel %d [P%d] ", adapter->host->host_no, cmd->channel, channel); printk("for physical devices.\n"); adapter->flag |= (1L << cmd->channel); } /* Fall through */ default: epthru->numsgelements = mega_build_sglist(adapter, scb, &epthru->dataxferaddr, &epthru->dataxferlen); break; } return epthru; } /** * mega_allocate_scb() * @adapter - pointer to our soft state * @cmd - scsi command from the mid-layer * * Allocate a SCB structure. This is the central structure for controller * commands. */ static inline scb_t * mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd) { struct list_head *head = &adapter->free_list; scb_t *scb; /* Unlink command from Free List */ if( !list_empty(head) ) { scb = list_entry(head->next, scb_t, list); list_del_init(head->next); scb->state = SCB_ACTIVE; scb->cmd = cmd; scb->dma_type = MEGA_DMA_TYPE_NONE; return scb; } return NULL; } /** * mega_runpendq() * @adapter - pointer to our soft state * * Runs through the list of pending requests. */ static inline void mega_runpendq(adapter_t *adapter) { if(!list_empty(&adapter->pending_list)) __mega_runpendq(adapter); } static void __mega_runpendq(adapter_t *adapter) { scb_t *scb; struct list_head *pos, *next; /* Issue any pending commands to the card */ list_for_each_safe(pos, next, &adapter->pending_list) { scb = list_entry(pos, scb_t, list); if( !(scb->state & SCB_ISSUED) ) { if( issue_scb(adapter, scb) != 0 ) return; } } return; } /** * issue_scb() * @adapter - pointer to our soft state * @scb - scsi control block * * Post a command to the card if the mailbox is available, otherwise return * busy. We also take the scb from the pending list if the mailbox is * available. */ static inline int issue_scb(adapter_t *adapter, scb_t *scb) { volatile mbox64_t *mbox64 = adapter->mbox64; volatile mbox_t *mbox = adapter->mbox; unsigned int i = 0; if(unlikely(mbox->busy)) { do { udelay(1); i++; } while( mbox->busy && (i < max_mbox_busy_wait) ); if(mbox->busy) return -1; } /* Copy mailbox data into host structure */ memcpy((char *)mbox, (char *)scb->raw_mbox, 16); mbox->cmdid = scb->idx; /* Set cmdid */ mbox->busy = 1; /* Set busy */ /* * Increment the pending queue counter */ atomic_inc(&adapter->pend_cmds); switch (mbox->cmd) { case MEGA_MBOXCMD_EXTPTHRU: if( !adapter->has_64bit_addr ) break; // else fall through case MEGA_MBOXCMD_LREAD64: case MEGA_MBOXCMD_LWRITE64: case MEGA_MBOXCMD_PASSTHRU64: mbox64->xfer_segment_lo = mbox->xferaddr; mbox64->xfer_segment_hi = 0; mbox->xferaddr = 0xFFFFFFFF; break; default: mbox64->xfer_segment_lo = 0; mbox64->xfer_segment_hi = 0; } /* * post the command */ scb->state |= SCB_ISSUED; if( likely(adapter->flag & BOARD_MEMMAP) ) { mbox->poll = 0; mbox->ack = 0; WRINDOOR(adapter, adapter->mbox_dma | 0x1); } else { irq_enable(adapter); issue_command(adapter); } return 0; } /** * issue_scb_block() * @adapter - pointer to our soft state * @raw_mbox - the mailbox * * Issue a scb in synchronous and non-interrupt mode */ static int issue_scb_block(adapter_t *adapter, u_char *raw_mbox) { volatile mbox64_t *mbox64 = adapter->mbox64; volatile mbox_t *mbox = adapter->mbox; u8 byte; u8 status; int i; /* Wait until mailbox is free */ if(mega_busywait_mbox (adapter)) goto bug_blocked_mailbox; /* Copy mailbox data into host structure */ memcpy((char *)mbox, raw_mbox, 16); mbox->cmdid = 0xFE; mbox->busy = 1; switch (raw_mbox[0]) { case MEGA_MBOXCMD_EXTPTHRU: if( !adapter->has_64bit_addr ) break; // else fall through case MEGA_MBOXCMD_LREAD64: case MEGA_MBOXCMD_LWRITE64: case MEGA_MBOXCMD_PASSTHRU64: mbox64->xfer_segment_lo = mbox->xferaddr; mbox64->xfer_segment_hi = 0; mbox->xferaddr = 0xFFFFFFFF; break; default: mbox64->xfer_segment_lo = 0; mbox64->xfer_segment_hi = 0; } if( likely(adapter->flag & BOARD_MEMMAP) ) { mbox->poll = 0; mbox->ack = 0; mbox->numstatus = 0xFF; mbox->status = 0xFF; WRINDOOR(adapter, adapter->mbox_dma | 0x1); while((volatile u8)mbox->numstatus == 0xFF) cpu_relax(); mbox->numstatus = 0xFF; while((volatile u8)mbox->status == 0xFF) cpu_relax(); status = mbox->status; mbox->status = 0xFF; while( (volatile u8)mbox->poll != 0x77 ) cpu_relax(); mbox->poll = 0; mbox->ack = 0x77; WRINDOOR(adapter, adapter->mbox_dma | 0x2); while(RDINDOOR(adapter) & 0x2) cpu_relax(); } else { irq_disable(adapter); issue_command(adapter); while (!((byte = irq_state(adapter)) & INTR_VALID)) cpu_relax(); status = mbox->status; mbox->numstatus = 0xFF; mbox->status = 0xFF; set_irq_state(adapter, byte); irq_enable(adapter); irq_ack(adapter); } // invalidate the completed command id array. After command // completion, firmware would write the valid id. for (i = 0; i < MAX_FIRMWARE_STATUS; i++) { mbox->completed[i] = 0xFF; } return status; bug_blocked_mailbox: printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n"); udelay (1000); return -1; } /** * megaraid_isr_iomapped() * @irq - irq * @devp - pointer to our soft state * @regs - unused * * Interrupt service routine for io-mapped controllers. * Find out if our device is interrupting. If yes, acknowledge the interrupt * and service the completed commands. */ static void megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs) { adapter_t *adapter = devp; unsigned long flags; spin_lock_irqsave(adapter->host_lock, flags); megaraid_iombox_ack_sequence(adapter); /* Loop through any pending requests */ if( atomic_read(&adapter->quiescent ) == 0) { mega_runpendq(adapter); } spin_unlock_irqrestore(adapter->host_lock, flags); return; } /** * megaraid_iombox_ack_sequence - interrupt ack sequence for IO mapped HBAs * @adapter - controller's soft state * * Interrupt ackrowledgement sequence for IO mapped HBAs */ static inline void megaraid_iombox_ack_sequence(adapter_t *adapter) { u8 status; u8 nstatus; u8 completed[MAX_FIRMWARE_STATUS]; u8 byte; int i; /* * loop till F/W has more commands for us to complete. */ do { /* Check if a valid interrupt is pending */ byte = irq_state(adapter); if( (byte & VALID_INTR_BYTE) == 0 ) { return; } set_irq_state(adapter, byte); while ((nstatus = adapter->mbox->numstatus) == 0xFF) { cpu_relax(); } adapter->mbox->numstatus = 0xFF; for (i = 0; i < nstatus; i++) { while ((completed[i] = adapter->mbox->completed[i]) == 0xFF) { cpu_relax(); } adapter->mbox->completed[i] = 0xFF; } // we must read the valid status now if ((status = adapter->mbox->status) == 0xFF) { printk(KERN_WARNING "megaraid critical: status 0xFF from firmware.\n"); } adapter->mbox->status = 0xFF; /* * decrement the pending queue counter */ atomic_sub(nstatus, &adapter->pend_cmds); /* Acknowledge interrupt */ irq_ack(adapter); mega_cmd_done(adapter, completed, nstatus, status); } while(1); } /** * megaraid_isr_memmapped() * @irq - irq * @devp - pointer to our soft state * @regs - unused * * Interrupt service routine for memory-mapped controllers. * Find out if our device is interrupting. If yes, acknowledge the interrupt * and service the completed commands. */ static void megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs) { adapter_t *adapter = devp; unsigned long flags; spin_lock_irqsave(adapter->host_lock, flags); megaraid_memmbox_ack_sequence(adapter); /* Loop through any pending requests */ if(atomic_read(&adapter->quiescent) == 0) { mega_runpendq(adapter); } spin_unlock_irqrestore(adapter->host_lock, flags); return; } /** * megaraid_memmbox_ack_sequence - interrupt ack sequence for memory mapped HBAs * @adapter - controller's soft state * * Interrupt ackrowledgement sequence for memory mapped HBAs */ static inline void megaraid_memmbox_ack_sequence(adapter_t *adapter) { u8 status; u32 dword = 0; u8 nstatus; u8 completed[MAX_FIRMWARE_STATUS]; int i; /* * loop till F/W has more commands for us to complete. */ do { /* Check if a valid interrupt is pending */ dword = RDOUTDOOR(adapter); if( dword != 0x10001234 ) { /* * No more pending commands */ return; } WROUTDOOR(adapter, 0x10001234); while ((nstatus = adapter->mbox->numstatus) == 0xFF) { cpu_relax(); } adapter->mbox->numstatus = 0xFF; for (i = 0; i < nstatus; i++ ) { while ((completed[i] = adapter->mbox->completed[i]) == 0xFF) { cpu_relax(); } adapter->mbox->completed[i] = 0xFF; } // we must read the valid status now if ((status = adapter->mbox->status) == 0xFF) { printk(KERN_WARNING "megaraid critical: status 0xFF from firmware.\n"); } adapter->mbox->status = 0xFF; /* * decrement the pending queue counter */ atomic_sub(nstatus, &adapter->pend_cmds); /* Acknowledge interrupt */ WRINDOOR(adapter, 0x2); while( RDINDOOR(adapter) & 0x02 ) cpu_relax(); mega_cmd_done(adapter, completed, nstatus, status); } while(1); } /** * mega_cmd_done() * @adapter - pointer to our soft state * @completed - array of ids of completed commands * @nstatus - number of completed commands * @status - status of the last command completed * * Complete the comamnds and call the scsi mid-layer callback hooks. */ static inline void mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) { mega_ext_passthru *epthru = NULL; struct scatterlist *sgl; Scsi_Cmnd *cmd = NULL; mega_passthru *pthru = NULL; mbox_t *mbox = NULL; int islogical; u8 c; scb_t *scb; int cmdid; int i; /* * for all the commands completed, call the mid-layer callback routine * and free the scb. */ for( i = 0; i < nstatus; i++ ) { cmdid = completed[i]; if( cmdid == CMDID_INT_CMDS ) { /* internal command */ scb = &adapter->int_scb; cmd = scb->cmd; mbox = (mbox_t *)scb->raw_mbox; /* * Internal command interface do not fire the extended * passthru or 64-bit passthru */ pthru = scb->pthru; } else { scb = &adapter->scb_list[cmdid]; cmd = scb->cmd; pthru = scb->pthru; epthru = scb->epthru; mbox = (mbox_t *)scb->raw_mbox; /* * Make sure f/w has completed a valid command */ if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { printk(KERN_CRIT "megaraid: invalid command "); printk("Id %d, scb->state:%x, scsi cmd:%p\n", cmdid, scb->state, scb->cmd); continue; } /* * Was an abort issued for this command */ if( scb->state & SCB_ABORT ) { printk(KERN_NOTICE "megaraid: aborted cmd %lx[%x] complete.\n", scb->cmd->serial_number, scb->idx); cmd->result = (DID_ABORT << 16); mega_free_scb(adapter, scb); cmd->scsi_done(cmd); continue; } /* * Was a reset issued for this command */ if( scb->state & SCB_RESET ) { printk(KERN_WARNING "megaraid: reset cmd %lx[%x] complete.\n", scb->cmd->serial_number, scb->idx); scb->cmd->result = (DID_RESET << 16); mega_free_scb (adapter, scb); cmd->scsi_done(cmd); continue; } #if MEGA_HAVE_STATS { int logdrv = mbox->logdrv; islogical = adapter->logdrv_chan[cmd->channel]; /* * Maintain an error counter for the logical drive. * Some application like SNMP agent need such * statistics */ if( status && islogical && (cmd->cmnd[0] == READ_6 || cmd->cmnd[0] == READ_10 || cmd->cmnd[0] == READ_12)) { /* * Logical drive number increases by 0x80 when * a logical drive is deleted */ adapter->rd_errors[logdrv%0x80]++; } if( status && islogical && (cmd->cmnd[0] == WRITE_6 || cmd->cmnd[0] == WRITE_10 || cmd->cmnd[0] == WRITE_12)) { /* * Logical drive number increases by 0x80 when * a logical drive is deleted */ adapter->wr_errors[logdrv%0x80]++; } } #endif } /* * Do not return the presence of hard disk on the channel so, * inquiry sent, and returned data==hard disk or removable * hard disk and not logical, request should return failure! - * PJ */ islogical = adapter->logdrv_chan[cmd->channel]; if (cmd->cmnd[0] == INQUIRY && !islogical) { if( cmd->use_sg ) { sgl = (struct scatterlist *) cmd->request_buffer; c = *(u8 *)sgl[0].address; } else { c = *(u8 *)cmd->request_buffer; } if(IS_RAID_CH(adapter, cmd->channel) && ((c & 0x1F ) == TYPE_DISK)) { status = 0xF0; } } /* clear result; otherwise, success returns corrupt value */ cmd->result = 0; /* Convert MegaRAID status to Linux error code */ switch (status) { case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ cmd->result |= (DID_OK << 16); break; case 0x02: /* ERROR_ABORTED, i.e. SCSI_STATUS_CHECK_CONDITION */ /* set sense_buffer and result fields */ if( mbox->cmd == MEGA_MBOXCMD_PASSTHRU || mbox->cmd == MEGA_MBOXCMD_PASSTHRU64 ) { memcpy(cmd->sense_buffer, pthru->reqsensearea, 14); cmd->result = (DRIVER_SENSE << 24) | (DID_OK << 16) | (CHECK_CONDITION << 1); } else { if (mbox->cmd == MEGA_MBOXCMD_EXTPTHRU) { memcpy(cmd->sense_buffer, epthru->reqsensearea, 14); cmd->result = (DRIVER_SENSE << 24) | (DID_OK << 16) | (CHECK_CONDITION << 1); } else { cmd->sense_buffer[0] = 0x70; cmd->sense_buffer[2] = ABORTED_COMMAND; cmd->result |= (CHECK_CONDITION << 1); } } break; case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. SCSI_STATUS_BUSY */ cmd->result |= (DID_BUS_BUSY << 16) | status; break; default: #if MEGA_HAVE_CLUSTERING /* * If TEST_UNIT_READY fails, we know * MEGA_RESERVATION_STATUS failed */ if( cmd->cmnd[0] == TEST_UNIT_READY ) { cmd->result |= (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1); } else /* * Error code returned is 1 if Reserve or Release * failed or the input parameter is invalid */ if( status == 1 && (cmd->cmnd[0] == RESERVE || cmd->cmnd[0] == RELEASE) ) { cmd->result |= (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1); } else #endif cmd->result |= (DID_BAD_TARGET << 16)|status; } /* * Only free SCBs for the commands coming down from the * mid-layer, not for which were issued internally * * For internal command, restore the status returned by the * firmware so that user can interpret it. */ if( cmdid == CMDID_INT_CMDS ) { /* internal command */ cmd->result = status; /* * Remove the internal command from the pending list */ list_del_init(&scb->list); scb->state = SCB_FREE; } else { mega_free_scb(adapter, scb); } /* * Call the mid-layer callback for this command */ cmd->scsi_done(cmd); } } /* * Free a SCB structure * Note: We assume the scsi commands associated with this scb is not free yet. */ static void mega_free_scb(adapter_t *adapter, scb_t *scb) { switch( scb->dma_type ) { case MEGA_DMA_TYPE_NONE: break; case MEGA_BULK_DATA: pci_unmap_page(adapter->dev, scb->dma_h_bulkdata, scb->cmd->request_bufflen, scb->dma_direction); if( scb->dma_direction == PCI_DMA_FROMDEVICE ) { pci_dma_sync_single(adapter->dev, scb->dma_h_bulkdata, scb->cmd->request_bufflen, PCI_DMA_FROMDEVICE); } break; case MEGA_SGLIST: pci_unmap_sg(adapter->dev, scb->cmd->request_buffer, scb->cmd->use_sg, scb->dma_direction); if( scb->dma_direction == PCI_DMA_FROMDEVICE ) { pci_dma_sync_sg(adapter->dev, scb->cmd->request_buffer, scb->cmd->use_sg, PCI_DMA_FROMDEVICE); } break; default: break; } /* * Remove from the pending list */ list_del_init(&scb->list); /* Link the scb back into free list */ scb->state = SCB_FREE; scb->cmd = NULL; list_add(&scb->list, &adapter->free_list); } /* * Wait until the controller's mailbox is available */ static inline int mega_busywait_mbox (adapter_t *adapter) { if (adapter->mbox->busy) return __mega_busywait_mbox(adapter); return 0; } static int __mega_busywait_mbox (adapter_t *adapter) { volatile mbox_t *mbox = adapter->mbox; long counter; for (counter = 0; counter < 10000; counter++) { if (!mbox->busy) return 0; udelay(100); yield(); } return -1; /* give up after 1 second */ } /* * Copies data to SGLIST * Note: For 64 bit cards, we need a minimum of one SG element for read/write */ static int mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) { struct scatterlist *sgl; struct page *page; unsigned long offset; Scsi_Cmnd *cmd; int sgcnt; int idx; cmd = scb->cmd; /* Scatter-gather not used */ if( !cmd->use_sg ) { page = virt_to_page(cmd->request_buffer); offset = ((unsigned long)cmd->request_buffer & ~PAGE_MASK); scb->dma_h_bulkdata = pci_map_page(adapter->dev, page, offset, cmd->request_bufflen, scb->dma_direction); scb->dma_type = MEGA_BULK_DATA; /* * We need to handle special 64-bit commands that need a * minimum of 1 SG */ if( adapter->has_64bit_addr ) { scb->sgl64[0].address = scb->dma_h_bulkdata; scb->sgl64[0].length = cmd->request_bufflen; *buf = (u32)scb->sgl_dma_addr; *len = (u32)cmd->request_bufflen; return 1; } else { *buf = (u32)scb->dma_h_bulkdata; *len = (u32)cmd->request_bufflen; } if( scb->dma_direction == PCI_DMA_TODEVICE ) { pci_dma_sync_single(adapter->dev, scb->dma_h_bulkdata, cmd->request_bufflen, PCI_DMA_TODEVICE); } return 0; } sgl = (struct scatterlist *)cmd->request_buffer; /* * Copy Scatter-Gather list info into controller structure. * * The number of sg elements returned must not exceed our limit */ sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg, scb->dma_direction); scb->dma_type = MEGA_SGLIST; if( sgcnt > adapter->sglen ) BUG(); for( idx = 0; idx < sgcnt; idx++, sgl++ ) { if( adapter->has_64bit_addr ) { scb->sgl64[idx].address = sg_dma_address(sgl); scb->sgl64[idx].length = sg_dma_len(sgl); } else { scb->sgl[idx].address = sg_dma_address(sgl); scb->sgl[idx].length = sg_dma_len(sgl); } } /* Reset pointer and length fields */ *buf = scb->sgl_dma_addr; /* * For passthru command, dataxferlen must be set, even for commands * with a sg list */ *len = (u32)cmd->request_bufflen; if( scb->dma_direction == PCI_DMA_TODEVICE ) { pci_dma_sync_sg(adapter->dev, cmd->request_buffer, cmd->use_sg, PCI_DMA_TODEVICE); } /* Return count of SG requests */ return sgcnt; } /* * mega_8_to_40ld() * * takes all info in AdapterInquiry structure and puts it into ProductInfo and * Enquiry3 structures for later use */ static void mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, mega_product_info *product_info) { int i; product_info->max_commands = inquiry->adapter_info.max_commands; enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; product_info->nchannels = inquiry->adapter_info.nchannels; for (i = 0; i < 4; i++) { product_info->fw_version[i] = inquiry->adapter_info.fw_version[i]; product_info->bios_version[i] = inquiry->adapter_info.bios_version[i]; } enquiry3->cache_flush_interval = inquiry->adapter_info.cache_flush_interval; product_info->dram_size = inquiry->adapter_info.dram_size; enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; } for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; } /* * Release the controller's resources */ static int megaraid_release(struct Scsi_Host *host) { adapter_t *adapter; mbox_t *mbox; u_char raw_mbox[sizeof(mbox_t)]; #ifdef CONFIG_PROC_FS char buf[12] = { 0 }; #endif adapter = (adapter_t *)host->hostdata; mbox = (mbox_t *)raw_mbox; printk(KERN_NOTICE "megaraid: being unloaded..."); /* Flush adapter cache */ memset(raw_mbox, 0, sizeof(raw_mbox)); raw_mbox[0] = FLUSH_ADAPTER; irq_disable(adapter); free_irq(adapter->host->irq, adapter); /* Issue a blocking (interrupts disabled) command to the card */ issue_scb_block(adapter, raw_mbox); /* Flush disks cache */ memset(raw_mbox, 0, sizeof(raw_mbox)); raw_mbox[0] = FLUSH_SYSTEM; /* Issue a blocking (interrupts disabled) command to the card */ issue_scb_block(adapter, raw_mbox); /* Free our resources */ if( adapter->flag & BOARD_MEMMAP ) { iounmap((void *)adapter->base); release_mem_region(adapter->host->base, 128); } else { release_region(adapter->base, 16); } mega_free_sgl(adapter); #ifdef CONFIG_PROC_FS if( adapter->controller_proc_dir_entry ) { remove_proc_entry("stat", adapter->controller_proc_dir_entry); remove_proc_entry("config", adapter->controller_proc_dir_entry); remove_proc_entry("mailbox", adapter->controller_proc_dir_entry); #if MEGA_HAVE_ENH_PROC remove_proc_entry("rebuild-rate", adapter->controller_proc_dir_entry); remove_proc_entry("battery-status", adapter->controller_proc_dir_entry); remove_proc_entry("diskdrives-ch0", adapter->controller_proc_dir_entry); remove_proc_entry("diskdrives-ch1", adapter->controller_proc_dir_entry); remove_proc_entry("diskdrives-ch2", adapter->controller_proc_dir_entry); remove_proc_entry("diskdrives-ch3", adapter->controller_proc_dir_entry); remove_proc_entry("raiddrives-0-9", adapter->controller_proc_dir_entry); remove_proc_entry("raiddrives-10-19", adapter->controller_proc_dir_entry); remove_proc_entry("raiddrives-20-29", adapter->controller_proc_dir_entry); remove_proc_entry("raiddrives-30-39", adapter->controller_proc_dir_entry); #endif sprintf(buf, "hba%d", adapter->host->host_no); remove_proc_entry(buf, mega_proc_dir_entry); } #endif pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, adapter->mega_buffer, adapter->buf_dma_handle); kfree(adapter->scb_list); pci_free_consistent(adapter->dev, sizeof(mbox64_t), (void *)adapter->una_mbox64, adapter->una_mbox64_dma); hba_count--; if( hba_count == 0 ) { /* * Unregister the character device interface to the driver. */ unregister_chrdev(major, "megadev"); unregister_reboot_notifier(&mega_notifier); #ifdef CONFIG_PROC_FS if( adapter->controller_proc_dir_entry ) { remove_proc_entry ("megaraid", &proc_root); } #endif } /* * Release the controller memory. A word of warning this frees * hostdata and that includes adapter-> so be careful what you * dereference beyond this point */ scsi_unregister(host); printk("ok.\n"); return 0; } static inline void mega_free_sgl(adapter_t *adapter) { scb_t *scb; int i; for(i = 0; i < adapter->max_cmds; i++) { scb = &adapter->scb_list[i]; if( scb->sgl64 ) { pci_free_consistent(adapter->dev, sizeof(mega_sgl64) * adapter->sglen, scb->sgl64, scb->sgl_dma_addr); scb->sgl64 = NULL; } if( scb->pthru ) { pci_free_consistent(adapter->dev, sizeof(mega_passthru), scb->pthru, scb->pthru_dma_addr); scb->pthru = NULL; } if( scb->epthru ) { pci_free_consistent(adapter->dev, sizeof(mega_ext_passthru), scb->epthru, scb->epthru_dma_addr); scb->epthru = NULL; } } } /* * Get information about the card/driver */ const char * megaraid_info(struct Scsi_Host *host) { static char buffer[512]; adapter_t *adapter; adapter = (adapter_t *)host->hostdata; sprintf (buffer, "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", adapter->fw_version, adapter->product_info.max_commands, adapter->host->max_id, adapter->host->max_channel, adapter->host->max_lun); return buffer; } /* shouldn't be used, but included for completeness */ static int megaraid_command (Scsi_Cmnd *cmd) { printk(KERN_WARNING "megaraid critcal error: synchronous interface is not implemented.\n"); cmd->result = (DID_ERROR << 16); cmd->scsi_done(cmd); return 1; } /** * megaraid_abort - abort the scsi command * @scp - command to be aborted * * Abort a previous SCSI request. Only commands on the pending list can be * aborted. All the commands issued to the F/W must complete. */ static int megaraid_abort(Scsi_Cmnd *scp) { adapter_t *adapter; struct list_head *pos, *next; scb_t *scb; long iter; int rval = SUCCESS; adapter = (adapter_t *)scp->host->hostdata; ASSERT( spin_is_locked(adapter->host_lock) ); printk("megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", scp->serial_number, scp->cmnd[0], scp->channel, scp->target, scp->lun); list_for_each_safe( pos, next, &adapter->pending_list ) { scb = list_entry(pos, scb_t, list); if( scb->cmd == scp ) { /* Found command */ scb->state |= SCB_ABORT; /* * Check if this command was never issued. If this is * the case, take it off from the pending list and * complete. */ if( !(scb->state & SCB_ISSUED) ) { printk(KERN_WARNING "megaraid: %ld:%d, driver owner.\n", scp->serial_number, scb->idx); scp->result = (DID_ABORT << 16); mega_free_scb(adapter, scb); scp->scsi_done(scp); break; } } } /* * By this time, either all commands are completed or aborted by * mid-layer. Do not return until all the commands are actually * completed by the firmware */ iter = 0; while( atomic_read(&adapter->pend_cmds) > 0 ) { /* * Perform the ack sequence, since interrupts are not * available right now! */ if( adapter->flag & BOARD_MEMMAP ) { megaraid_memmbox_ack_sequence(adapter); } else { megaraid_iombox_ack_sequence(adapter); } /* * print a message once every second only */ if( !(iter % 1000) ) { printk( "megaraid: Waiting for %d commands to flush: iter:%ld\n", atomic_read(&adapter->pend_cmds), iter); } if( iter++ < MBOX_ABORT_SLEEP*1000 ) { mdelay(1); } else { printk(KERN_WARNING "megaraid: critical hardware error!\n"); rval = FAILED; break; } } if( rval == SUCCESS ) { printk(KERN_INFO "megaraid: abort sequence successfully completed.\n"); } return rval; } static int megaraid_reset(Scsi_Cmnd *cmd) { adapter_t *adapter; megacmd_t mc; long iter; int rval = SUCCESS; adapter = (adapter_t *)cmd->host->hostdata; ASSERT( spin_is_locked(adapter->host_lock) ); printk("megaraid: reset-%ld cmd=%x <c=%d t=%d l=%d>\n", cmd->serial_number, cmd->cmnd[0], cmd->channel, cmd->target, cmd->lun); #if MEGA_HAVE_CLUSTERING mc.cmd = MEGA_CLUSTER_CMD; mc.opcode = MEGA_RESET_RESERVATIONS; spin_unlock_irq(adapter->host_lock); if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) { printk(KERN_WARNING "megaraid: reservation reset failed.\n"); } else { printk(KERN_INFO "megaraid: reservation reset.\n"); } spin_lock_irq(adapter->host_lock); #endif /* * Do not return until all the commands are actually completed by the * firmware */ iter = 0; while( atomic_read(&adapter->pend_cmds) > 0 ) { /* * Perform the ack sequence, since interrupts are not * available right now! */ if( adapter->flag & BOARD_MEMMAP ) { megaraid_memmbox_ack_sequence(adapter); } else { megaraid_iombox_ack_sequence(adapter); } /* * print a message once every second only */ if( !(iter % 1000) ) { printk( "megaraid: Waiting for %d commands to flush: iter:%ld\n", atomic_read(&adapter->pend_cmds), iter); } if( iter++ < MBOX_RESET_SLEEP*1000 ) { mdelay(1); } else { printk(KERN_WARNING "megaraid: critical hardware error!\n"); rval = FAILED; break; } } if( rval == SUCCESS ) { printk(KERN_INFO "megaraid: reset sequence successfully completed.\n"); } return rval; } #ifdef CONFIG_PROC_FS /* Following code handles /proc fs */ #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \ S_IRUSR | S_IFREG, \ controller_proc_dir_entry, \ func, adapter) /** * mega_create_proc_entry() * @index - index in soft state array * @parent - parent node for this /proc entry * * Creates /proc entries for our controllers. */ static void mega_create_proc_entry(int index, struct proc_dir_entry *parent) { struct proc_dir_entry *controller_proc_dir_entry = NULL; u8 string[64] = { 0 }; adapter_t *adapter = hba_soft_state[index]; sprintf(string, "hba%d", adapter->host->host_no); controller_proc_dir_entry = adapter->controller_proc_dir_entry = proc_mkdir(string, parent); if(!controller_proc_dir_entry) { printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); return; } adapter->proc_read = CREATE_READ_PROC("config", proc_read_config); adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat); adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox); #if MEGA_HAVE_ENH_PROC adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate); adapter->proc_battery = CREATE_READ_PROC("battery-status", proc_battery); /* * Display each physical drive on its channel */ adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0", proc_pdrv_ch0); adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1", proc_pdrv_ch1); adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2", proc_pdrv_ch2); adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3", proc_pdrv_ch3); /* * Display a set of up to 10 logical drive through each of following * /proc entries */ adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9", proc_rdrv_10); adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19", proc_rdrv_20); adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29", proc_rdrv_30); adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39", proc_rdrv_40); #endif } /** * proc_read_config() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display configuration information about the controller. */ static int proc_read_config(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; int len = 0; len += sprintf(page+len, "%s", MEGARAID_VERSION); if(adapter->product_info.product_name[0]) len += sprintf(page+len, "%s\n", adapter->product_info.product_name); len += sprintf(page+len, "Controller Type: "); if( adapter->flag & BOARD_MEMMAP ) { len += sprintf(page+len, "438/466/467/471/493/518/520/531/532\n"); } else { len += sprintf(page+len, "418/428/434\n"); } if(adapter->flag & BOARD_40LD) { len += sprintf(page+len, "Controller Supports 40 Logical Drives\n"); } if(adapter->flag & BOARD_64BIT) { len += sprintf(page+len, "Controller capable of 64-bit memory addressing\n"); } if( adapter->has_64bit_addr ) { len += sprintf(page+len, "Controller using 64-bit memory addressing\n"); } else { len += sprintf(page+len, "Controller is not using 64-bit memory addressing\n"); } len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base, adapter->host->irq); len += sprintf(page+len, "Initial Logical Drives = %d, Channels = %d\n", adapter->numldrv, adapter->product_info.nchannels); len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n", adapter->fw_version, adapter->bios_version, adapter->product_info.dram_size); len += sprintf(page+len, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", adapter->product_info.max_commands, adapter->max_cmds); len += sprintf(page+len, "support_ext_cdb = %d\n", adapter->support_ext_cdb); len += sprintf(page+len, "support_random_del = %d\n", adapter->support_random_del); len += sprintf(page+len, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); len += sprintf(page+len, "boot_ldrv = %d\n", adapter->boot_ldrv); len += sprintf(page+len, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); len += sprintf(page+len, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); len += sprintf(page+len, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); len += sprintf(page+len, "quiescent = %d\n", atomic_read(&adapter->quiescent)); len += sprintf(page+len, "has_cluster = %d\n", adapter->has_cluster); len += sprintf(page+len, "\nModule Parameters:\n"); len += sprintf(page+len, "max_cmd_per_lun = %d\n", max_cmd_per_lun); len += sprintf(page+len, "max_sectors_per_io = %d\n", max_sectors_per_io); *eof = 1; return len; } /** * proc_read_stat() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Diaplay statistical information about the I/O activity. */ static int proc_read_stat(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter; int len; int i; i = 0; /* avoid compilation warnings */ len = 0; adapter = (adapter_t *)data; len = sprintf(page, "Statistical Information for this controller\n"); len += sprintf(page+len, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); #if MEGA_HAVE_STATS for(i = 0; i < adapter->numldrv; i++) { len += sprintf(page+len, "Logical Drive %d:\n", i); len += sprintf(page+len, "\tReads Issued = %lu, Writes Issued = %lu\n", adapter->nreads[i], adapter->nwrites[i]); len += sprintf(page+len, "\tSectors Read = %lu, Sectors Written = %lu\n", adapter->nreadblocks[i], adapter->nwriteblocks[i]); len += sprintf(page+len, "\tRead errors = %lu, Write errors = %lu\n\n", adapter->rd_errors[i], adapter->wr_errors[i]); } #else len += sprintf(page+len, "IO and error counters not compiled in driver.\n"); #endif *eof = 1; return len; } /** * proc_read_mbox() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display mailbox information for the last command issued. This information * is good for debugging. */ static int proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; volatile mbox_t *mbox = adapter->mbox; int len = 0; len = sprintf(page, "Contents of Mail Box Structure\n"); len += sprintf(page+len, " Fw Command = 0x%02x\n", mbox->cmd); len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", mbox->cmdid); len += sprintf(page+len, " No of Sectors= %04d\n", mbox->numsectors); len += sprintf(page+len, " LBA = 0x%02x\n", mbox->lba); len += sprintf(page+len, " DTA = 0x%08x\n", mbox->xferaddr); len += sprintf(page+len, " Logical Drive= 0x%02x\n", mbox->logdrv); len += sprintf(page+len, " No of SG Elmt= 0x%02x\n", mbox->numsgelements); len += sprintf(page+len, " Busy = %01x\n", mbox->busy); len += sprintf(page+len, " Status = 0x%02x\n", mbox->status); *eof = 1; return len; } /** * proc_rebuild_rate() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display current rebuild rate */ static int proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; dma_addr_t dma_handle; caddr_t inquiry; struct pci_dev *pdev; int len = 0; pdev = adapter->dev; if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { *eof = 1; return len; } if( mega_adapinq(adapter, dma_handle) != 0 ) { len = sprintf(page, "Adapter inquiry failed.\n"); printk(KERN_WARNING "megaraid: inquiry failed.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); *eof = 1; return len; } if( adapter->flag & BOARD_40LD ) { len = sprintf(page, "Rebuild Rate: [%d%%]\n", ((mega_inquiry3 *)inquiry)->rebuild_rate); } else { len = sprintf(page, "Rebuild Rate: [%d%%]\n", ((mraid_ext_inquiry *) inquiry)->raid_inq.adapter_info.rebuild_rate); } mega_free_inquiry(inquiry, dma_handle, pdev); *eof = 1; return len; } /** * proc_battery() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display information about the battery module on the controller. */ static int proc_battery(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; dma_addr_t dma_handle; caddr_t inquiry; struct pci_dev *pdev; u8 battery_status = 0; char str[256]; int len = 0; pdev = adapter->dev; if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { *eof = 1; return len; } if( mega_adapinq(adapter, dma_handle) != 0 ) { len = sprintf(page, "Adapter inquiry failed.\n"); printk(KERN_WARNING "megaraid: inquiry failed.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); *eof = 1; return len; } if( adapter->flag & BOARD_40LD ) { battery_status = ((mega_inquiry3 *)inquiry)->battery_status; } else { battery_status = ((mraid_ext_inquiry *)inquiry)-> raid_inq.adapter_info.battery_status; } /* * Decode the battery status */ sprintf(str, "Battery Status:[%d]", battery_status); if(battery_status == MEGA_BATT_CHARGE_DONE) strcat(str, " Charge Done"); if(battery_status & MEGA_BATT_MODULE_MISSING) strcat(str, " Module Missing"); if(battery_status & MEGA_BATT_LOW_VOLTAGE) strcat(str, " Low Voltage"); if(battery_status & MEGA_BATT_TEMP_HIGH) strcat(str, " Temperature High"); if(battery_status & MEGA_BATT_PACK_MISSING) strcat(str, " Pack Missing"); if(battery_status & MEGA_BATT_CHARGE_INPROG) strcat(str, " Charge In-progress"); if(battery_status & MEGA_BATT_CHARGE_FAIL) strcat(str, " Charge Fail"); if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) strcat(str, " Cycles Exceeded"); len = sprintf(page, "%s\n", str); mega_free_inquiry(inquiry, dma_handle, pdev); *eof = 1; return len; } /** * proc_pdrv_ch0() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display information about the physical drives on physical channel 0. */ static int proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_pdrv(adapter, page, 0)); } /** * proc_pdrv_ch1() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display information about the physical drives on physical channel 1. */ static int proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_pdrv(adapter, page, 1)); } /** * proc_pdrv_ch2() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display information about the physical drives on physical channel 2. */ static int proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_pdrv(adapter, page, 2)); } /** * proc_pdrv_ch3() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display information about the physical drives on physical channel 3. */ static int proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_pdrv(adapter, page, 3)); } /** * proc_pdrv() * @page - buffer to write the data in * @adapter - pointer to our soft state * * Display information about the physical drives. */ static int proc_pdrv(adapter_t *adapter, char *page, int channel) { dma_addr_t dma_handle; char *scsi_inq; dma_addr_t scsi_inq_dma_handle; caddr_t inquiry; struct pci_dev *pdev; u8 *pdrv_state; u8 state; int tgt; int max_channels; int len = 0; char str[80]; int i; pdev = adapter->dev; if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { return len; } if( mega_adapinq(adapter, dma_handle) != 0 ) { len = sprintf(page, "Adapter inquiry failed.\n"); printk(KERN_WARNING "megaraid: inquiry failed.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); return len; } scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); if( scsi_inq == NULL ) { len = sprintf(page, "memory not available for scsi inq.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); return len; } if( adapter->flag & BOARD_40LD ) { pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; } else { pdrv_state = ((mraid_ext_inquiry *)inquiry)-> raid_inq.pdrv_info.pdrv_state; } max_channels = adapter->product_info.nchannels; if( channel >= max_channels ) return 0; for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { i = channel*16 + tgt; state = *(pdrv_state + i); switch( state & 0x0F ) { case PDRV_ONLINE: sprintf(str, "Channel:%2d Id:%2d State: Online", channel, tgt); break; case PDRV_FAILED: sprintf(str, "Channel:%2d Id:%2d State: Failed", channel, tgt); break; case PDRV_RBLD: sprintf(str, "Channel:%2d Id:%2d State: Rebuild", channel, tgt); break; case PDRV_HOTSPARE: sprintf(str, "Channel:%2d Id:%2d State: Hot spare", channel, tgt); break; default: sprintf(str, "Channel:%2d Id:%2d State: Un-configured", channel, tgt); break; } /* * This interface displays inquiries for disk drives * only. Inquries for logical drives and non-disk * devices are available through /proc/scsi/scsi */ memset(scsi_inq, 0, 256); if( mega_internal_dev_inquiry(adapter, channel, tgt, scsi_inq_dma_handle) || (scsi_inq[0] & 0x1F) != TYPE_DISK ) { continue; } /* * Check for overflow. We print less than 240 * characters for inquiry */ if( (len + 240) >= PAGE_SIZE ) break; len += sprintf(page+len, "%s.\n", str); len += mega_print_inquiry(page+len, scsi_inq); } pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); mega_free_inquiry(inquiry, dma_handle, pdev); return len; } /* * Display scsi inquiry */ static int mega_print_inquiry(char *page, char *scsi_inq) { int len = 0; int i; len = sprintf(page, " Vendor: "); for( i = 8; i < 16; i++ ) { len += sprintf(page+len, "%c", scsi_inq[i]); } len += sprintf(page+len, " Model: "); for( i = 16; i < 32; i++ ) { len += sprintf(page+len, "%c", scsi_inq[i]); } len += sprintf(page+len, " Rev: "); for( i = 32; i < 36; i++ ) { len += sprintf(page+len, "%c", scsi_inq[i]); } len += sprintf(page+len, "\n"); i = scsi_inq[0] & 0x1f; len += sprintf(page+len, " Type: %s ", i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] : "Unknown "); len += sprintf(page+len, " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07); if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) len += sprintf(page+len, " CCS\n"); else len += sprintf(page+len, "\n"); return len; } /** * proc_rdrv_10() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display real time information about the logical drives 0 through 9. */ static int proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_rdrv(adapter, page, 0, 9)); } /** * proc_rdrv_20() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display real time information about the logical drives 10 through 19. */ static int proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_rdrv(adapter, page, 10, 19)); } /** * proc_rdrv_30() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display real time information about the logical drives 20 through 29. */ static int proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_rdrv(adapter, page, 20, 29)); } /** * proc_rdrv_40() * @page - buffer to write the data in * @start - where the actual data has been written in page * @offset - same meaning as the read system call * @count - same meaning as the read system call * @eof - set if no more data needs to be returned * @data - pointer to our soft state * * Display real time information about the logical drives 30 through 39. */ static int proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof, void *data) { adapter_t *adapter = (adapter_t *)data; *eof = 1; return (proc_rdrv(adapter, page, 30, 39)); } /** * proc_rdrv() * @page - buffer to write the data in * @adapter - pointer to our soft state * @start - starting logical drive to display * @end - ending logical drive to display * * We do not print the inquiry information since its already available through * /proc/scsi/scsi interface */ static int proc_rdrv(adapter_t *adapter, char *page, int start, int end) { dma_addr_t dma_handle; logdrv_param *lparam; megacmd_t mc; char *disk_array; dma_addr_t disk_array_dma_handle; caddr_t inquiry; struct pci_dev *pdev; u8 *rdrv_state; int num_ldrv; u32 array_sz; int len = 0; int i; u8 span8_flag = 1; pdev = adapter->dev; if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { return len; } if( mega_adapinq(adapter, dma_handle) != 0 ) { len = sprintf(page, "Adapter inquiry failed.\n"); printk(KERN_WARNING "megaraid: inquiry failed.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); return len; } memset(&mc, 0, sizeof(megacmd_t)); if( adapter->flag & BOARD_40LD ) { array_sz = sizeof(disk_array_40ld); rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; } else { /* * 'array_sz' is either the size of diskarray_span4_t or the * size of disk_array_span8_t. We use span8_t's size because * it is bigger of the two. */ array_sz = sizeof( diskarray_span8_t ); rdrv_state = ((mraid_ext_inquiry *)inquiry)-> raid_inq.logdrv_info.ldrv_state; num_ldrv = ((mraid_ext_inquiry *)inquiry)-> raid_inq.logdrv_info.num_ldrv; } disk_array = pci_alloc_consistent(pdev, array_sz, &disk_array_dma_handle); if( disk_array == NULL ) { len = sprintf(page, "memory not available.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); return len; } mc.xferaddr = (u32)disk_array_dma_handle; if( adapter->flag & BOARD_40LD ) { mc.cmd = FC_NEW_CONFIG; mc.opcode = OP_DCMD_READ_CONFIG; if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) { len = sprintf(page, "40LD read config failed.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); pci_free_consistent(pdev, array_sz, disk_array, disk_array_dma_handle); return len; } } else { /* * Try 8-Span "read config" command */ mc.cmd = NEW_READ_CONFIG_8LD; if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) { /* * 8-Span command failed; try 4-Span command */ span8_flag = 0; mc.cmd = READ_CONFIG_8LD; if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ){ len = sprintf(page, "8LD read config failed.\n"); mega_free_inquiry(inquiry, dma_handle, pdev); pci_free_consistent(pdev, array_sz, disk_array, disk_array_dma_handle); return len; } } } for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { if( adapter->flag & BOARD_40LD ) { lparam = &((disk_array_40ld *)disk_array)->ldrv[i].lparam; } else { if( span8_flag ) { lparam = (logdrv_param*) &((diskarray_span8_t*) (disk_array))->log_drv[i]; } else { lparam = (logdrv_param*) &((diskarray_span4_t*) (disk_array))->log_drv[i]; } } /* * Check for overflow. We print less than 240 characters for * information about each logical drive. */ if( (len + 240) >= PAGE_SIZE ) break; len += sprintf(page+len, "Logical drive:%2d:, ", i); switch( rdrv_state[i] & 0x0F ) { case RDRV_OFFLINE: len += sprintf(page+len, "state: offline"); break; case RDRV_DEGRADED: len += sprintf(page+len, "state: degraded"); break; case RDRV_OPTIMAL: len += sprintf(page+len, "state: optimal"); break; case RDRV_DELETED: len += sprintf(page+len, "state: deleted"); break; default: len += sprintf(page+len, "state: unknown"); break; } /* * Check if check consistency or initialization is going on * for this logical drive. */ if( (rdrv_state[i] & 0xF0) == 0x20 ) { len += sprintf(page+len, ", check-consistency in progress"); } else if( (rdrv_state[i] & 0xF0) == 0x10 ) { len += sprintf(page+len, ", initialization in progress"); } len += sprintf(page+len, "\n"); len += sprintf(page+len, "Span depth:%3d, ", lparam->span_depth); len += sprintf(page+len, "RAID level:%3d, ", lparam->level); len += sprintf(page+len, "Stripe size:%3d, ", lparam->stripe_sz ? lparam->stripe_sz/2: 128); len += sprintf(page+len, "Row size:%3d\n", lparam->row_size); len += sprintf(page+len, "Read Policy: "); switch(lparam->read_ahead) { case NO_READ_AHEAD: len += sprintf(page+len, "No read ahead, "); break; case READ_AHEAD: len += sprintf(page+len, "Read ahead, "); break; case ADAP_READ_AHEAD: len += sprintf(page+len, "Adaptive, "); break; } len += sprintf(page+len, "Write Policy: "); switch(lparam->write_mode) { case WRMODE_WRITE_THRU: len += sprintf(page+len, "Write thru, "); break; case WRMODE_WRITE_BACK: len += sprintf(page+len, "Write back, "); break; } len += sprintf(page+len, "Cache Policy: "); switch(lparam->direct_io) { case CACHED_IO: len += sprintf(page+len, "Cached IO\n\n"); break; case DIRECT_IO: len += sprintf(page+len, "Direct IO\n\n"); break; } } mega_free_inquiry(inquiry, dma_handle, pdev); pci_free_consistent(pdev, array_sz, disk_array, disk_array_dma_handle); return len; } #endif /** * megaraid_biosparam() * @disk * @dev * @geom * * Return the disk geometry for a particular disk * Input: * Disk *disk - Disk geometry * kdev_t dev - Device node * int *geom - Returns geometry fields * geom[0] = heads * geom[1] = sectors * geom[2] = cylinders */ static int megaraid_biosparam(Disk *disk, kdev_t dev, int *geom) { int heads, sectors, cylinders; adapter_t *adapter; /* Get pointer to host config structure */ adapter = (adapter_t *)disk->device->host->hostdata; if (IS_RAID_CH(adapter, disk->device->channel)) { /* Default heads (64) & sectors (32) */ heads = 64; sectors = 32; cylinders = disk->capacity / (heads * sectors); /* * Handle extended translation size for logical drives * > 1Gb */ if (disk->capacity >= 0x200000) { heads = 255; sectors = 63; cylinders = disk->capacity / (heads * sectors); } /* return result */ geom[0] = heads; geom[1] = sectors; geom[2] = cylinders; } else { if( !mega_partsize(disk, dev, geom) ) return 0; printk(KERN_WARNING "megaraid: invalid partition on this disk on channel %d\n", disk->device->channel); /* Default heads (64) & sectors (32) */ heads = 64; sectors = 32; cylinders = disk->capacity / (heads * sectors); /* Handle extended translation size for logical drives > 1Gb */ if (disk->capacity >= 0x200000) { heads = 255; sectors = 63; cylinders = disk->capacity / (heads * sectors); } /* return result */ geom[0] = heads; geom[1] = sectors; geom[2] = cylinders; } return 0; } /* * mega_partsize() * @disk * @geom * * Purpose : to determine the BIOS mapping used to create the partition * table, storing the results (cyls, hds, and secs) in geom * * Note: Code is picked from scsicam.h * * Returns : -1 on failure, 0 on success. */ static int mega_partsize(Disk *disk, kdev_t dev, int *geom) { struct buffer_head *bh; struct partition *p, *largest = NULL; int i, largest_cyl; int heads, cyls, sectors; int capacity = disk->capacity; int ma = MAJOR(dev); int mi = (MINOR(dev) & ~0xf); int block = 1024; if (blksize_size[ma]) block = blksize_size[ma][mi]; if (!(bh = bread(MKDEV(ma,mi), 0, block))) return -1; if (*(unsigned short *)(bh->b_data + 510) == 0xAA55 ) { for (largest_cyl = -1, p = (struct partition *)(0x1BE + bh->b_data), i = 0; i < 4; ++i, ++p) { if (!p->sys_ind) continue; cyls = p->end_cyl + ((p->end_sector & 0xc0) << 2); if (cyls >= largest_cyl) { largest_cyl = cyls; largest = p; } } } if (largest) { heads = largest->end_head + 1; sectors = largest->end_sector & 0x3f; if (!heads || !sectors) { brelse(bh); return -1; } cyls = capacity/(heads * sectors); geom[0] = heads; geom[1] = sectors; geom[2] = cyls; brelse(bh); return 0; } brelse(bh); return -1; } /** * megaraid_reboot_notify() * @this - unused * @code - shutdown code * @unused - unused * * This routine will be called when the use has done a forced shutdown on the * system. Flush the Adapter and disks cache. */ static int megaraid_reboot_notify (struct notifier_block *this, unsigned long code, void *unused) { adapter_t *adapter; struct Scsi_Host *host; u8 raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; int i; /* * Flush the controller's cache irrespective of the codes coming down. * SYS_DOWN, SYS_HALT, SYS_RESTART, SYS_POWER_OFF */ for( i = 0; i < hba_count; i++ ) { printk(KERN_INFO "megaraid: flushing adapter %d..", i); host = hba_soft_state[i]->host; adapter = (adapter_t *)host->hostdata; mbox = (mbox_t *)raw_mbox; /* Flush adapter cache */ memset(raw_mbox, 0, sizeof(raw_mbox)); raw_mbox[0] = FLUSH_ADAPTER; irq_disable(adapter); free_irq(adapter->host->irq, adapter); /* * Issue a blocking (interrupts disabled) command to * the card */ issue_scb_block(adapter, raw_mbox); /* Flush disks cache */ memset(raw_mbox, 0, sizeof(raw_mbox)); raw_mbox[0] = FLUSH_SYSTEM; issue_scb_block(adapter, raw_mbox); printk("Done.\n"); if( atomic_read(&adapter->pend_cmds) > 0 ) { printk(KERN_WARNING "megaraid: pending commands!!\n"); } } /* * Have a delibrate delay to make sure all the caches are * actually flushed. */ printk(KERN_INFO "megaraid: cache flush delay: "); for( i = 9; i >= 0; i-- ) { printk("\b\b\b[%d]", i); mdelay(1000); } printk("\b\b\b[done]\n"); mdelay(1000); return NOTIFY_DONE; } /** * mega_init_scb() * @adapter - pointer to our soft state * * Allocate memory for the various pointers in the scb structures: * scatter-gather list pointer, passthru and extended passthru structure * pointers. */ static int mega_init_scb(adapter_t *adapter) { scb_t *scb; int i; for( i = 0; i < adapter->max_cmds; i++ ) { scb = &adapter->scb_list[i]; scb->sgl64 = NULL; scb->sgl = NULL; scb->pthru = NULL; scb->epthru = NULL; } for( i = 0; i < adapter->max_cmds; i++ ) { scb = &adapter->scb_list[i]; scb->idx = i; scb->sgl64 = pci_alloc_consistent(adapter->dev, sizeof(mega_sgl64) * adapter->sglen, &scb->sgl_dma_addr); scb->sgl = (mega_sglist *)scb->sgl64; if( !scb->sgl ) { printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); mega_free_sgl(adapter); return -1; } scb->pthru = pci_alloc_consistent(adapter->dev, sizeof(mega_passthru), &scb->pthru_dma_addr); if( !scb->pthru ) { printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); mega_free_sgl(adapter); return -1; } scb->epthru = pci_alloc_consistent(adapter->dev, sizeof(mega_ext_passthru), &scb->epthru_dma_addr); if( !scb->epthru ) { printk(KERN_WARNING "Can't allocate extended passthru.\n"); mega_free_sgl(adapter); return -1; } scb->dma_type = MEGA_DMA_TYPE_NONE; /* * Link to free list * lock not required since we are loading the driver, so no * commands possible right now. */ scb->state = SCB_FREE; scb->cmd = NULL; list_add(&scb->list, &adapter->free_list); } return 0; } /** * megadev_open() * @inode - unused * @filep - unused * * Routines for the character/ioctl interface to the driver. Find out if this * is a valid open. If yes, increment the module use count so that it cannot * be unloaded. */ static int megadev_open (struct inode *inode, struct file *filep) { /* * Only allow superuser to access private ioctl interface */ if( !capable(CAP_SYS_ADMIN) ) return -EACCES; MOD_INC_USE_COUNT; return 0; } /** * megadev_ioctl() * @inode - Our device inode * @filep - unused * @cmd - ioctl command * @arg - user buffer * * ioctl entry point for our private ioctl interface. We move the data in from * the user space, prepare the command (if necessary, convert the old MIMD * ioctl to new ioctl command), and issue a synchronous command to the * controller. */ static int megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg) { adapter_t *adapter; nitioctl_t uioc; int adapno; int rval; mega_passthru *upthru; /* user address for passthru */ mega_passthru *pthru; /* copy user passthru here */ dma_addr_t pthru_dma_hndl; void *data = NULL; /* data to be transferred */ dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ megacmd_t mc; megastat_t *ustats; int num_ldrv; u32 uxferaddr = 0; struct pci_dev *pdev; ustats = NULL; /* avoid compilation warnings */ num_ldrv = 0; /* * Make sure only USCSICMD are issued through this interface. * MIMD application would still fire different command. */ if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { return -EINVAL; } /* * Check and convert a possible MIMD command to NIT command. * mega_m_to_n() copies the data from the user space, so we do not * have to do it here. * NOTE: We will need some user address to copyout the data, therefore * the inteface layer will also provide us with the required user * addresses. */ memset(&uioc, 0, sizeof(nitioctl_t)); if( (rval = mega_m_to_n( (void *)arg, &uioc)) != 0 ) return rval; switch( uioc.opcode ) { case GET_DRIVER_VER: if( put_user(driver_ver, (u32 *)uioc.uioc_uaddr) ) return (-EFAULT); break; case GET_N_ADAP: if( put_user(hba_count, (u32 *)uioc.uioc_uaddr) ) return (-EFAULT); /* * Shucks. MIMD interface returns a positive value for number * of adapters. TODO: Change it to return 0 when there is no * applicatio using mimd interface. */ return hba_count; case GET_ADAP_INFO: /* * Which adapter */ if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) return (-ENODEV); if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, sizeof(struct mcontroller)) ) return (-EFAULT); break; #if MEGA_HAVE_STATS case GET_STATS: /* * Which adapter */ if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) return (-ENODEV); adapter = hba_soft_state[adapno]; ustats = (megastat_t *)uioc.uioc_uaddr; if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) return (-EFAULT); /* * Check for the validity of the logical drive number */ if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; if( copy_to_user(ustats->nreads, adapter->nreads, num_ldrv*sizeof(u32)) ) return -EFAULT; if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, num_ldrv*sizeof(u32)) ) return -EFAULT; if( copy_to_user(ustats->nwrites, adapter->nwrites, num_ldrv*sizeof(u32)) ) return -EFAULT; if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, num_ldrv*sizeof(u32)) ) return -EFAULT; if( copy_to_user(ustats->rd_errors, adapter->rd_errors, num_ldrv*sizeof(u32)) ) return -EFAULT; if( copy_to_user(ustats->wr_errors, adapter->wr_errors, num_ldrv*sizeof(u32)) ) return -EFAULT; return 0; #endif case MBOX_CMD: /* * Which adapter */ if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) return (-ENODEV); adapter = hba_soft_state[adapno]; /* * Deletion of logical drive is a special case. The adapter * should be quiescent before this command is issued. */ if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { /* * Do we support this feature */ if( !adapter->support_random_del ) { printk(KERN_WARNING "megaraid: logdrv "); printk("delete on non-supporting F/W.\n"); return (-EINVAL); } rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); if( rval == 0 ) { memset(&mc, 0, sizeof(megacmd_t)); mc.status = rval; rval = mega_n_to_m((void *)arg, &mc); } return rval; } /* * This interface only support the regular passthru commands. * Reject extended passthru and 64-bit passthru */ if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { printk(KERN_WARNING "megaraid: rejected passthru.\n"); return (-EINVAL); } /* * For all internal commands, the buffer must be allocated in * <4GB address range */ pdev = adapter->dev; /* Is it a passthru command or a DCMD */ if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { /* Passthru commands */ pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), &pthru_dma_hndl); if( pthru == NULL ) { return (-ENOMEM); } /* * The user passthru structure */ upthru = (mega_passthru *)MBOX(uioc)->xferaddr; /* * Copy in the user passthru here. */ if( copy_from_user(pthru, (char *)upthru, sizeof(mega_passthru)) ) { pci_free_consistent(pdev, sizeof(mega_passthru), pthru, pthru_dma_hndl); return (-EFAULT); } /* * Is there a data transfer */ if( pthru->dataxferlen ) { data = pci_alloc_consistent(pdev, pthru->dataxferlen, &data_dma_hndl); if( data == NULL ) { pci_free_consistent(pdev, sizeof(mega_passthru), pthru, pthru_dma_hndl); return (-ENOMEM); } /* * Save the user address and point the kernel * address at just allocated memory */ uxferaddr = pthru->dataxferaddr; pthru->dataxferaddr = data_dma_hndl; } /* * Is data coming down-stream */ if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { /* * Get the user data */ if( copy_from_user(data, (char *)uxferaddr, pthru->dataxferlen) ) { rval = (-EFAULT); goto freemem_and_return; } } memset(&mc, 0, sizeof(megacmd_t)); mc.cmd = MEGA_MBOXCMD_PASSTHRU; mc.xferaddr = (u32)pthru_dma_hndl; /* * Issue the command */ mega_internal_command(adapter, LOCK_INT, &mc, pthru); rval = mega_n_to_m((void *)arg, &mc); if( rval ) goto freemem_and_return; /* * Is data going up-stream */ if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { if( copy_to_user((char *)uxferaddr, data, pthru->dataxferlen) ) { rval = (-EFAULT); } } /* * Send the request sense data also, irrespective of * whether the user has asked for it or not. */ copy_to_user(upthru->reqsensearea, pthru->reqsensearea, 14); freemem_and_return: if( pthru->dataxferlen ) { pci_free_consistent(pdev, pthru->dataxferlen, data, data_dma_hndl); } pci_free_consistent(pdev, sizeof(mega_passthru), pthru, pthru_dma_hndl); return rval; } else { /* DCMD commands */ /* * Is there a data transfer */ if( uioc.xferlen ) { data = pci_alloc_consistent(pdev, uioc.xferlen, &data_dma_hndl); if( data == NULL ) { return (-ENOMEM); } uxferaddr = MBOX(uioc)->xferaddr; } /* * Is data coming down-stream */ if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { /* * Get the user data */ if( copy_from_user(data, (char *)uxferaddr, uioc.xferlen) ) { pci_free_consistent(pdev, uioc.xferlen, data, data_dma_hndl); return (-EFAULT); } } memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); mc.xferaddr = (u32)data_dma_hndl; /* * Issue the command */ mega_internal_command(adapter, LOCK_INT, &mc, NULL); rval = mega_n_to_m((void *)arg, &mc); if( rval ) { if( uioc.xferlen ) { pci_free_consistent(pdev, uioc.xferlen, data, data_dma_hndl); } return rval; } /* * Is data going up-stream */ if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { if( copy_to_user((char *)uxferaddr, data, uioc.xferlen) ) { rval = (-EFAULT); } } if( uioc.xferlen ) { pci_free_consistent(pdev, uioc.xferlen, data, data_dma_hndl); } return rval; } default: return (-EINVAL); } return 0; } /** * mega_m_to_n() * @arg - user address * @uioc - new ioctl structure * * A thin layer to convert older mimd interface ioctl structure to NIT ioctl * structure * * Converts the older mimd ioctl structure to newer NIT structure */ static int mega_m_to_n(void *arg, nitioctl_t *uioc) { struct uioctl_t uioc_mimd; char signature[8] = {0}; u8 opcode; u8 subopcode; /* * check is the application conforms to NIT. We do not have to do much * in that case. * We exploit the fact that the signature is stored in the very * begining of the structure. */ if( copy_from_user(signature, (char *)arg, 7) ) return (-EFAULT); if( memcmp(signature, "MEGANIT", 7) == 0 ) { /* * NOTE NOTE: The nit ioctl is still under flux because of * change of mailbox definition, in HPE. No applications yet * use this interface and let's not have applications use this * interface till the new specifitions are in place. */ return -EINVAL; #if 0 if( copy_from_user(uioc, (char *)arg, sizeof(nitioctl_t)) ) return (-EFAULT); return 0; #endif } /* * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t * * Get the user ioctl structure */ if( copy_from_user(&uioc_mimd, (char *)arg, sizeof(struct uioctl_t)) ) return (-EFAULT); /* * Get the opcode and subopcode for the commands */ opcode = uioc_mimd.ui.fcs.opcode; subopcode = uioc_mimd.ui.fcs.subopcode; switch (opcode) { case 0x82: switch (subopcode) { case MEGAIOC_QDRVRVER: /* Query driver version */ uioc->opcode = GET_DRIVER_VER; uioc->uioc_uaddr = uioc_mimd.data; break; case MEGAIOC_QNADAP: /* Get # of adapters */ uioc->opcode = GET_N_ADAP; uioc->uioc_uaddr = uioc_mimd.data; break; case MEGAIOC_QADAPINFO: /* Get adapter information */ uioc->opcode = GET_ADAP_INFO; uioc->adapno = uioc_mimd.ui.fcs.adapno; uioc->uioc_uaddr = uioc_mimd.data; break; default: return(-EINVAL); } break; case 0x81: uioc->opcode = MBOX_CMD; uioc->adapno = uioc_mimd.ui.fcs.adapno; memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); uioc->xferlen = uioc_mimd.ui.fcs.length; if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; break; case 0x80: uioc->opcode = MBOX_CMD; uioc->adapno = uioc_mimd.ui.fcs.adapno; memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); /* * Choose the xferlen bigger of input and output data */ uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? uioc_mimd.outlen : uioc_mimd.inlen; if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; break; default: return (-EINVAL); } return 0; } /* * mega_n_to_m() * @arg - user address * @mc - mailbox command * * Updates the status information to the application, depending on application * conforms to older mimd ioctl interface or newer NIT ioctl interface */ static int mega_n_to_m(void *arg, megacmd_t *mc) { nitioctl_t *uiocp; megacmd_t *umc; megacmd_t kmc; mega_passthru *upthru; struct uioctl_t *uioc_mimd; char signature[8] = {0}; /* * check is the application conforms to NIT. */ if( copy_from_user(signature, (char *)arg, 7) ) return -EFAULT; if( memcmp(signature, "MEGANIT", 7) == 0 ) { uiocp = (nitioctl_t *)arg; if( put_user(mc->status, (u8 *)&MBOX_P(uiocp)->status) ) return (-EFAULT); if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { umc = MBOX_P(uiocp); upthru = (mega_passthru *)umc->xferaddr; if( put_user(mc->status, (u8 *)&upthru->scsistatus) ) return (-EFAULT); } } else { uioc_mimd = (struct uioctl_t *)arg; if( put_user(mc->status, (u8 *)&uioc_mimd->mbox[17]) ) return (-EFAULT); if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { umc = (megacmd_t *)uioc_mimd->mbox; if (copy_from_user(&kmc, umc, sizeof(megacmd_t))) return -EFAULT; upthru = (mega_passthru *)kmc.xferaddr; if( put_user(mc->status, (u8 *)&upthru->scsistatus) ) return (-EFAULT); } } return 0; } static int megadev_close (struct inode *inode, struct file *filep) { MOD_DEC_USE_COUNT; return 0; } /* * MEGARAID 'FW' commands. */ /** * mega_is_bios_enabled() * @adapter - pointer to our soft state * * issue command to find out if the BIOS is enabled for this controller */ static int mega_is_bios_enabled(adapter_t *adapter) { unsigned char raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; int ret; mbox = (mbox_t *)raw_mbox; memset(raw_mbox, 0, sizeof(raw_mbox)); memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); mbox->xferaddr = (u32)adapter->buf_dma_handle; raw_mbox[0] = IS_BIOS_ENABLED; raw_mbox[2] = GET_BIOS; ret = issue_scb_block(adapter, raw_mbox); return *(char *)adapter->mega_buffer; } /** * mega_enum_raid_scsi() * @adapter - pointer to our soft state * * Find out what channels are RAID/SCSI. This information is used to * differentiate the virtual channels and physical channels and to support * ROMB feature and non-disk devices. */ static void mega_enum_raid_scsi(adapter_t *adapter) { unsigned char raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; int i; mbox = (mbox_t *)raw_mbox; memset(raw_mbox, 0, sizeof(raw_mbox)); /* * issue command to find out what channels are raid/scsi */ raw_mbox[0] = CHNL_CLASS; raw_mbox[2] = GET_CHNL_CLASS; memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); mbox->xferaddr = (u32)adapter->buf_dma_handle; /* * Non-ROMB firware fail this command, so all channels * must be shown RAID */ adapter->mega_ch_class = 0xFF; if(!issue_scb_block(adapter, raw_mbox)) { adapter->mega_ch_class = *((char *)adapter->mega_buffer); } for( i = 0; i < adapter->product_info.nchannels; i++ ) { if( (adapter->mega_ch_class >> i) & 0x01 ) { printk(KERN_INFO "megaraid: channel[%d] is raid.\n", i); } else { printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", i); } } return; } /** * mega_get_boot_drv() * @adapter - pointer to our soft state * * Find out which device is the boot device. Note, any logical drive or any * phyical device (e.g., a CDROM) can be designated as a boot device. */ static void mega_get_boot_drv(adapter_t *adapter) { struct private_bios_data *prv_bios_data; unsigned char raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; u16 cksum = 0; u8 *cksum_p; u8 boot_pdrv; int i; mbox = (mbox_t *)raw_mbox; memset(raw_mbox, 0, sizeof(raw_mbox)); raw_mbox[0] = BIOS_PVT_DATA; raw_mbox[2] = GET_BIOS_PVT_DATA; memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); mbox->xferaddr = (u32)adapter->buf_dma_handle; adapter->boot_ldrv_enabled = 0; adapter->boot_ldrv = 0; adapter->boot_pdrv_enabled = 0; adapter->boot_pdrv_ch = 0; adapter->boot_pdrv_tgt = 0; if(issue_scb_block(adapter, raw_mbox) == 0) { prv_bios_data = (struct private_bios_data *)adapter->mega_buffer; cksum = 0; cksum_p = (char *)prv_bios_data; for (i = 0; i < 14; i++ ) { cksum += (u16)(*cksum_p++); } if (prv_bios_data->cksum == (u16)(0-cksum) ) { /* * If MSB is set, a physical drive is set as boot * device */ if( prv_bios_data->boot_drv & 0x80 ) { adapter->boot_pdrv_enabled = 1; boot_pdrv = prv_bios_data->boot_drv & 0x7F; adapter->boot_pdrv_ch = boot_pdrv / 16; adapter->boot_pdrv_tgt = boot_pdrv % 16; } else { adapter->boot_ldrv_enabled = 1; adapter->boot_ldrv = prv_bios_data->boot_drv; } } } } /** * mega_support_random_del() * @adapter - pointer to our soft state * * Find out if this controller supports random deletion and addition of * logical drives */ static int mega_support_random_del(adapter_t *adapter) { unsigned char raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; int rval; mbox = (mbox_t *)raw_mbox; memset(raw_mbox, 0, sizeof(raw_mbox)); /* * issue command */ raw_mbox[0] = FC_DEL_LOGDRV; raw_mbox[2] = OP_SUP_DEL_LOGDRV; rval = issue_scb_block(adapter, raw_mbox); return !rval; } /** * mega_support_ext_cdb() * @adapter - pointer to our soft state * * Find out if this firmware support cdblen > 10 */ static int mega_support_ext_cdb(adapter_t *adapter) { unsigned char raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; int rval; mbox = (mbox_t *)raw_mbox; memset(raw_mbox, 0, sizeof(raw_mbox)); /* * issue command to find out if controller supports extended CDBs. */ raw_mbox[0] = 0xA4; raw_mbox[2] = 0x16; rval = issue_scb_block(adapter, raw_mbox); return !rval; } /** * mega_del_logdrv() * @adapter - pointer to our soft state * @logdrv - logical drive to be deleted * * Delete the specified logical drive. It is the responsibility of the user * app to let the OS know about this operation. */ static int mega_del_logdrv(adapter_t *adapter, int logdrv) { DECLARE_WAIT_QUEUE_HEAD(wq); unsigned long flags; scb_t *scb; int rval; ASSERT( !spin_is_locked(adapter->host_lock) ); /* * Stop sending commands to the controller, queue them internally. * When deletion is complete, ISR will flush the queue. */ atomic_set(&adapter->quiescent, 1); /* * Wait till all the issued commands are complete and there are no * commands in the pending queue */ while( atomic_read(&adapter->pend_cmds) > 0 ) { sleep_on_timeout( &wq, 1*HZ ); /* sleep for 1s */ } rval = mega_do_del_logdrv(adapter, logdrv); spin_lock_irqsave(adapter->host_lock, flags); /* * If delete operation was successful, add 0x80 to the logical drive * ids for commands in the pending queue. */ if (adapter->read_ldidmap) { struct list_head *pos; list_for_each(pos, &adapter->pending_list) { scb = list_entry(pos, scb_t, list); if (((mbox_t *)scb->raw_mbox)->logdrv < 0x80 ) ((mbox_t *)scb->raw_mbox)->logdrv += 0x80 ; } } atomic_set(&adapter->quiescent, 0); mega_runpendq(adapter); spin_unlock_irqrestore(adapter->host_lock, flags); return rval; } static int mega_do_del_logdrv(adapter_t *adapter, int logdrv) { int rval; u8 raw_mbox[sizeof(mbox_t)]; memset(raw_mbox, 0, sizeof(raw_mbox)); raw_mbox[0] = FC_DEL_LOGDRV; raw_mbox[2] = OP_DEL_LOGDRV; raw_mbox[3] = logdrv; /* Issue a blocking command to the card */ rval = issue_scb_block(adapter, raw_mbox); /* log this event */ if(rval) { printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); return rval; } /* * After deleting first logical drive, the logical drives must be * addressed by adding 0x80 to the logical drive id. */ adapter->read_ldidmap = 1; return rval; } /** * mega_get_max_sgl() * @adapter - pointer to our soft state * * Find out the maximum number of scatter-gather elements supported by this * version of the firmware */ static void mega_get_max_sgl(adapter_t *adapter) { unsigned char raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; mbox = (mbox_t *)raw_mbox; memset(raw_mbox, 0, sizeof(raw_mbox)); memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); mbox->xferaddr = (u32)adapter->buf_dma_handle; raw_mbox[0] = MAIN_MISC_OPCODE; raw_mbox[2] = GET_MAX_SG_SUPPORT; if( issue_scb_block(adapter, raw_mbox) ) { /* * f/w does not support this command. Choose the default value */ adapter->sglen = MIN_SGLIST; } else { adapter->sglen = *((char *)adapter->mega_buffer); /* * Make sure this is not more than the resources we are * planning to allocate */ if ( adapter->sglen > MAX_SGLIST ) adapter->sglen = MAX_SGLIST; } return; } /** * mega_support_cluster() * @adapter - pointer to our soft state * * Find out if this firmware support cluster calls. */ static int mega_support_cluster(adapter_t *adapter) { unsigned char raw_mbox[sizeof(mbox_t)]; mbox_t *mbox; mbox = (mbox_t *)raw_mbox; memset(raw_mbox, 0, sizeof(raw_mbox)); memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); mbox->xferaddr = (u32)adapter->buf_dma_handle; /* * Try to get the initiator id. This command will succeed iff the * clustering is available on this HBA. */ raw_mbox[0] = MEGA_GET_TARGET_ID; if( issue_scb_block(adapter, raw_mbox) == 0 ) { /* * Cluster support available. Get the initiator target id. * Tell our id to mid-layer too. */ adapter->this_id = *(u32 *)adapter->mega_buffer; adapter->host->this_id = adapter->this_id; return 1; } return 0; } /** * mega_get_ldrv_num() * @adapter - pointer to our soft state * @cmd - scsi mid layer command * @channel - channel on the controller * * Calculate the logical drive number based on the information in scsi command * and the channel number. */ static inline int mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel) { int tgt; int ldrv_num; tgt = cmd->target; if ( tgt > adapter->this_id ) tgt--; /* we do not get inquires for initiator id */ ldrv_num = (channel * 15) + tgt; /* * If we have a logical drive with boot enabled, project it first */ if( adapter->boot_ldrv_enabled ) { if( ldrv_num == 0 ) { ldrv_num = adapter->boot_ldrv; } else { if( ldrv_num <= adapter->boot_ldrv ) { ldrv_num--; } } } /* * If "delete logical drive" feature is enabled on this controller. * Do only if at least one delete logical drive operation was done. * * Also, after logical drive deletion, instead of logical drive number, * the value returned should be 0x80+logical drive id. * * These is valid only for IO commands. */ if (adapter->support_random_del && adapter->read_ldidmap ) switch (cmd->cmnd[0]) { case READ_6: /* fall through */ case WRITE_6: /* fall through */ case READ_10: /* fall through */ case WRITE_10: ldrv_num += 0x80; } return ldrv_num; } /** * mega_reorder_hosts() * * Hack: reorder the scsi hosts in mid-layer so that the controller with the * boot device on it appears first in the list. */ static void mega_reorder_hosts(void) { struct Scsi_Host *shpnt; struct Scsi_Host *shone; struct Scsi_Host *shtwo; adapter_t *boot_host; int i; /* * Find the (first) host which has it's BIOS enabled */ boot_host = NULL; for (i = 0; i < MAX_CONTROLLERS; i++) { if (mega_hbas[i].is_bios_enabled) { boot_host = mega_hbas[i].hostdata_addr; break; } } if (!boot_host) { printk(KERN_NOTICE "megaraid: no BIOS enabled.\n"); return; } /* * Traverse through the list of SCSI hosts for our HBA locations */ shone = shtwo = NULL; for (shpnt = scsi_hostlist; shpnt; shpnt = shpnt->next) { /* Is it one of ours? */ for (i = 0; i < MAX_CONTROLLERS; i++) { if ((adapter_t *) shpnt->hostdata == mega_hbas[i].hostdata_addr) { /* Does this one has BIOS enabled */ if (mega_hbas[i].hostdata_addr == boot_host) { /* Are we first */ if (!shtwo) /* Yes! */ return; else /* :-( */ shone = shpnt; } else { if (!shtwo) { /* were we here before? xchng * first */ shtwo = shpnt; } } break; } } /* * Have we got the boot host and one which does not have the * bios enabled. */ if (shone && shtwo) break; } if (shone && shtwo) { mega_swap_hosts (shone, shtwo); } return; } static void mega_swap_hosts (struct Scsi_Host *shone, struct Scsi_Host *shtwo) { struct Scsi_Host *prevtoshtwo; struct Scsi_Host *prevtoshone; struct Scsi_Host *save = NULL; /* Are these two nodes adjacent */ if (shtwo->next == shone) { if (shtwo == scsi_hostlist && !shone->next) { /* just two nodes */ scsi_hostlist = shone; shone->next = shtwo; shtwo->next = NULL; } else if (shtwo == scsi_hostlist) { /* first two nodes of the list */ scsi_hostlist = shone; shtwo->next = shone->next; scsi_hostlist->next = shtwo; } else if (!shone->next) { /* last two nodes of the list */ prevtoshtwo = scsi_hostlist; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; prevtoshtwo->next = shone; shone->next = shtwo; shtwo->next = NULL; } else { prevtoshtwo = scsi_hostlist; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; prevtoshtwo->next = shone; shtwo->next = shone->next; shone->next = shtwo; } } else if (shtwo == scsi_hostlist && !shone->next) { /* shtwo at head, shone at tail, not adjacent */ prevtoshone = scsi_hostlist; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; scsi_hostlist = shone; shone->next = shtwo->next; prevtoshone->next = shtwo; shtwo->next = NULL; } else if (shtwo == scsi_hostlist && shone->next) { /* shtwo at head, shone is not at tail */ prevtoshone = scsi_hostlist; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; scsi_hostlist = shone; prevtoshone->next = shtwo; save = shtwo->next; shtwo->next = shone->next; shone->next = save; } else if (!shone->next) { /* shtwo not at head, shone at tail */ prevtoshtwo = scsi_hostlist; prevtoshone = scsi_hostlist; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; prevtoshtwo->next = shone; shone->next = shtwo->next; prevtoshone->next = shtwo; shtwo->next = NULL; } else { prevtoshtwo = scsi_hostlist; prevtoshone = scsi_hostlist; save = NULL; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; prevtoshtwo->next = shone; save = shone->next; shone->next = shtwo->next; prevtoshone->next = shtwo; shtwo->next = save; } return; } #ifdef CONFIG_PROC_FS /** * mega_adapinq() * @adapter - pointer to our soft state * @dma_handle - DMA address of the buffer * * Issue internal comamnds while interrupts are available. * We only issue direct mailbox commands from within the driver. ioctl() * interface using these routines can issue passthru commands. */ static int mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) { megacmd_t mc; memset(&mc, 0, sizeof(megacmd_t)); if( adapter->flag & BOARD_40LD ) { mc.cmd = FC_NEW_CONFIG; mc.opcode = NC_SUBOP_ENQUIRY3; mc.subopcode = ENQ3_GET_SOLICITED_FULL; } else { mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; } mc.xferaddr = (u32)dma_handle; if ( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) { return -1; } return 0; } /** * mega_allocate_inquiry() * @dma_handle - handle returned for dma address * @pdev - handle to pci device * * allocates memory for inquiry structure */ static inline caddr_t mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) { return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); } static inline void mega_free_inquiry(caddr_t inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) { pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); } /** mega_internal_dev_inquiry() * @adapter - pointer to our soft state * @ch - channel for this device * @tgt - ID of this device * @buf_dma_handle - DMA address of the buffer * * Issue the scsi inquiry for the specified device. */ static int mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, dma_addr_t buf_dma_handle) { mega_passthru *pthru; dma_addr_t pthru_dma_handle; megacmd_t mc; int rval; struct pci_dev *pdev; /* * For all internal commands, the buffer must be allocated in <4GB * address range */ pdev = adapter->dev; pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), &pthru_dma_handle); if( pthru == NULL ) { return -1; } pthru->timeout = 2; pthru->ars = 1; pthru->reqsenselen = 14; pthru->islogical = 0; pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; pthru->cdblen = 6; pthru->cdb[0] = INQUIRY; pthru->cdb[1] = 0; pthru->cdb[2] = 0; pthru->cdb[3] = 0; pthru->cdb[4] = 255; pthru->cdb[5] = 0; pthru->dataxferaddr = (u32)buf_dma_handle; pthru->dataxferlen = 256; memset(&mc, 0, sizeof(megacmd_t)); mc.cmd = MEGA_MBOXCMD_PASSTHRU; mc.xferaddr = (u32)pthru_dma_handle; rval = mega_internal_command(adapter, LOCK_INT, &mc, pthru); pci_free_consistent(pdev, sizeof(mega_passthru), pthru, pthru_dma_handle); return rval; } #endif // #ifdef CONFIG_PROC_FS /** * mega_internal_command() * @adapter - pointer to our soft state * @ls - the scope of the exclusion lock. * @mc - the mailbox command * @pthru - Passthru structure for DCDB commands * * Issue the internal commands in interrupt mode. * The last argument is the address of the passthru structure if the command * to be fired is a passthru command * * lockscope specifies whether the caller has already acquired the lock. Of * course, the caller must know which lock we are talking about. * * Note: parameter 'pthru' is null for non-passthru commands. */ static int mega_internal_command(adapter_t *adapter, lockscope_t ls, megacmd_t *mc, mega_passthru *pthru ) { Scsi_Cmnd *scmd; unsigned long flags = 0; scb_t *scb; int rval; /* * The internal commands share one command id and hence are * serialized. This is so because we want to reserve maximum number of * available command ids for the I/O commands. */ down(&adapter->int_mtx); scb = &adapter->int_scb; memset(scb, 0, sizeof(scb_t)); scmd = &adapter->int_scmd; memset(scmd, 0, sizeof(Scsi_Cmnd)); scmd->host = adapter->host; scmd->buffer = (void *)scb; scmd->cmnd[0] = MEGA_INTERNAL_CMD; scb->state |= SCB_ACTIVE; scb->cmd = scmd; memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); /* * Is it a passthru command */ if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { scb->pthru = pthru; } scb->idx = CMDID_INT_CMDS; scmd->state = 0; /* * Get the lock only if the caller has not acquired it already */ if( ls == LOCK_INT ) spin_lock_irqsave(adapter->host_lock, flags); megaraid_queue(scmd, mega_internal_done); if( ls == LOCK_INT ) spin_unlock_irqrestore(adapter->host_lock, flags); /* * Wait till this command finishes. Do not use * wait_event_interruptible(). It causes panic if CTRL-C is hit when * dumping e.g., physical disk information through /proc interface. * Catching the return value should solve the issue but for now keep * the call non-interruptible. */ #if 0 wait_event_interruptible(adapter->int_waitq, scmd->state); #endif wait_event(adapter->int_waitq, scmd->state); rval = scmd->result; mc->status = scmd->result; /* * Print a debug message for all failed commands. Applications can use * this information. */ if( scmd->result && trace_level ) { printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", mc->cmd, mc->opcode, mc->subopcode, scmd->result); } up(&adapter->int_mtx); return rval; } /** * mega_internal_done() * @scmd - internal scsi command * * Callback routine for internal commands. */ static void mega_internal_done(Scsi_Cmnd *scmd) { adapter_t *adapter; adapter = (adapter_t *)scmd->host->hostdata; scmd->state = 1; /* thread waiting for its command to complete */ /* * See comment in mega_internal_command() routine for * wait_event_interruptible() */ #if 0 wake_up_interruptible(&adapter->int_waitq); #endif wake_up(&adapter->int_waitq); } static Scsi_Host_Template driver_template = MEGARAID; #include "scsi_module.c" /* vi: set ts=8 sw=8 tw=78: */
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