| /* |
| * |
| * 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. |
| * |
| * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> |
| * - new-style, hotplug-aware pci probing and scsi registration |
| * |
| * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju |
| * <Seokmann.Ju@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 mailing list |
| * linux-scsi@vger.kernel.org . |
| * |
| */ |
| |
| #include <linux/mm.h> |
| #include <linux/fs.h> |
| #include <linux/blkdev.h> |
| #include <linux/uaccess.h> |
| #include <asm/io.h> |
| #include <linux/completion.h> |
| #include <linux/delay.h> |
| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| #include <linux/reboot.h> |
| #include <linux/module.h> |
| #include <linux/list.h> |
| #include <linux/interrupt.h> |
| #include <linux/pci.h> |
| #include <linux/init.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/mutex.h> |
| #include <linux/slab.h> |
| #include <scsi/scsicam.h> |
| |
| #include "scsi.h" |
| #include <scsi/scsi_host.h> |
| |
| #include "megaraid.h" |
| |
| #define MEGARAID_MODULE_VERSION "2.00.4" |
| |
| MODULE_AUTHOR ("sju@lsil.com"); |
| MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver"); |
| MODULE_LICENSE ("GPL"); |
| MODULE_VERSION(MEGARAID_MODULE_VERSION); |
| |
| static DEFINE_MUTEX(megadev_mutex); |
| static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; |
| module_param(max_cmd_per_lun, uint, 0); |
| 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_param(max_sectors_per_io, ushort, 0); |
| 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_param(max_mbox_busy_wait, ushort, 0); |
| 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)->mmio_base + 0x20) |
| #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) |
| #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) |
| #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) |
| |
| /* |
| * Global variables |
| */ |
| |
| static int hba_count; |
| static adapter_t *hba_soft_state[MAX_CONTROLLERS]; |
| static struct proc_dir_entry *mega_proc_dir_entry; |
| |
| /* For controller re-ordering */ |
| static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; |
| |
| static long |
| megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); |
| |
| /* |
| * The File Operations structure for the serial/ioctl interface of the driver |
| */ |
| static const struct file_operations megadev_fops = { |
| .owner = THIS_MODULE, |
| .unlocked_ioctl = megadev_unlocked_ioctl, |
| .open = megadev_open, |
| .llseek = noop_llseek, |
| }; |
| |
| /* |
| * 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 = 0x02000000; |
| |
| /* 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; |
| |
| /** |
| * 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(adapter->mbox_dma & 0xFF, |
| adapter->host->io_port + MBOX_PORT0); |
| |
| outb((adapter->mbox_dma >> 8) & 0xFF, |
| adapter->host->io_port + MBOX_PORT1); |
| |
| outb((adapter->mbox_dma >> 16) & 0xFF, |
| adapter->host->io_port + MBOX_PORT2); |
| |
| outb((adapter->mbox_dma >> 24) & 0xFF, |
| adapter->host->io_port + MBOX_PORT3); |
| |
| outb(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(struct mbox_out)]; |
| mbox_t *mbox; |
| int retval; |
| |
| /* Initialize adapter inquiry mailbox */ |
| |
| mbox = (mbox_t *)raw_mbox; |
| |
| memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
| memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
| |
| /* |
| * Try to issue Inquiry3 command |
| * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and |
| * update enquiry3 structure |
| */ |
| mbox->m_out.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->m_out.xferaddr = (u32)dma_handle; |
| |
| /*issue old 0x04 command to adapter */ |
| mbox->m_out.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->m_out.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))) |
| dev_warn(&adapter->dev->dev, |
| "Product_info cmd failed with error: %d\n", |
| retval); |
| |
| 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; /* Up to 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 |
| Note: fw_version[0|1] and bios_version[0|1] were originally shifted |
| right 8 bits making them zero. This 0 value was hardcoded to fix |
| sparse warnings. */ |
| if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) { |
| snprintf(adapter->fw_version, sizeof(adapter->fw_version), |
| "%c%d%d.%d%d", |
| adapter->product_info.fw_version[2], |
| 0, |
| adapter->product_info.fw_version[1] & 0x0f, |
| 0, |
| adapter->product_info.fw_version[0] & 0x0f); |
| snprintf(adapter->bios_version, sizeof(adapter->fw_version), |
| "%c%d%d.%d%d", |
| adapter->product_info.bios_version[2], |
| 0, |
| adapter->product_info.bios_version[1] & 0x0f, |
| 0, |
| 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; |
| } |
| |
| dev_notice(&adapter->dev->dev, "[%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) |
| dev_notice(&adapter->dev->dev, "supports extended CDBs\n"); |
| |
| |
| return 0; |
| } |
| |
| /** |
| * 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); |
| } |
| |
| /* |
| * 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_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) |
| { |
| adapter_t *adapter; |
| scb_t *scb; |
| int busy=0; |
| unsigned long flags; |
| |
| adapter = (adapter_t *)scmd->device->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. |
| */ |
| |
| spin_lock_irqsave(&adapter->lock, flags); |
| scb = mega_build_cmd(adapter, scmd, &busy); |
| if (!scb) |
| goto out; |
| |
| 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); |
| |
| busy = 0; |
| out: |
| spin_unlock_irqrestore(&adapter->lock, flags); |
| return busy; |
| } |
| |
| static DEF_SCSI_QCMD(megaraid_queue) |
| |
| /** |
| * 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, struct 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_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, struct scsi_cmnd *cmd, int channel) |
| { |
| int tgt; |
| int ldrv_num; |
| |
| tgt = cmd->device->id; |
| |
| 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_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, struct scsi_cmnd *cmd, int *busy) |
| { |
| mega_ext_passthru *epthru; |
| mega_passthru *pthru; |
| scb_t *scb; |
| mbox_t *mbox; |
| u32 seg; |
| char islogical; |
| int max_ldrv_num; |
| int channel = 0; |
| int target = 0; |
| int ldrv_num = 0; /* logical drive number */ |
| |
| /* |
| * We know what channels our logical drives are on - mega_find_card() |
| */ |
| islogical = adapter->logdrv_chan[cmd->device->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->device->channel - |
| adapter->product_info.nchannels; |
| } |
| else { |
| /* this is physical channel */ |
| channel = cmd->device->channel; |
| target = cmd->device->id; |
| |
| /* |
| * 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 ) { |
| /* this is the logical channel */ |
| channel = cmd->device->channel; |
| } |
| else { |
| /* physical channel */ |
| channel = cmd->device->channel - NVIRT_CHAN; |
| target = cmd->device->id; |
| } |
| } |
| |
| |
| if(islogical) { |
| |
| /* have just LUN 0 for each target on virtual channels */ |
| if (cmd->device->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->device->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: |
| #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))) { |
| *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: { |
| char *buf; |
| struct scatterlist *sg; |
| |
| sg = scsi_sglist(cmd); |
| buf = kmap_atomic(sg_page(sg)) + sg->offset; |
| |
| memset(buf, 0, cmd->cmnd[4]); |
| kunmap_atomic(buf - sg->offset); |
| |
| cmd->result = (DID_OK << 16); |
| cmd->scsi_done(cmd); |
| return NULL; |
| } |
| |
| case READ_CAPACITY: |
| case INQUIRY: |
| |
| if(!(adapter->flag & (1L << cmd->device->channel))) { |
| |
| dev_notice(&adapter->dev->dev, |
| "scsi%d: scanning scsi channel %d " |
| "for logical drives\n", |
| adapter->host->host_no, |
| cmd->device->channel); |
| |
| adapter->flag |= (1L << cmd->device->channel); |
| } |
| |
| /* Allocate a SCB and initialize passthru */ |
| if(!(scb = mega_allocate_scb(adapter, 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->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; |
| } |
| else { |
| mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; |
| } |
| |
| scb->dma_direction = PCI_DMA_FROMDEVICE; |
| |
| pthru->numsgelements = mega_build_sglist(adapter, scb, |
| &pthru->dataxferaddr, &pthru->dataxferlen); |
| |
| mbox->m_out.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))) { |
| *busy = 1; |
| return NULL; |
| } |
| mbox = (mbox_t *)scb->raw_mbox; |
| |
| memset(mbox, 0, sizeof(scb->raw_mbox)); |
| mbox->m_out.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->m_out.cmd = (*cmd->cmnd & 0x02) ? |
| MEGA_MBOXCMD_LWRITE64: |
| MEGA_MBOXCMD_LREAD64 ; |
| } |
| else { |
| mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? |
| MEGA_MBOXCMD_LWRITE: |
| MEGA_MBOXCMD_LREAD ; |
| } |
| |
| /* |
| * 6-byte READ(0x08) or WRITE(0x0A) cdb |
| */ |
| if( cmd->cmd_len == 6 ) { |
| mbox->m_out.numsectors = (u32) cmd->cmnd[4]; |
| mbox->m_out.lba = |
| ((u32)cmd->cmnd[1] << 16) | |
| ((u32)cmd->cmnd[2] << 8) | |
| (u32)cmd->cmnd[3]; |
| |
| mbox->m_out.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->m_out.numsectors; |
| } else { |
| adapter->nwrites[ldrv_num%0x80]++; |
| adapter->nwriteblocks[ldrv_num%0x80] += |
| mbox->m_out.numsectors; |
| } |
| #endif |
| } |
| |
| /* |
| * 10-byte READ(0x28) or WRITE(0x2A) cdb |
| */ |
| if( cmd->cmd_len == 10 ) { |
| mbox->m_out.numsectors = |
| (u32)cmd->cmnd[8] | |
| ((u32)cmd->cmnd[7] << 8); |
| mbox->m_out.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->m_out.numsectors; |
| } else { |
| adapter->nwrites[ldrv_num%0x80]++; |
| adapter->nwriteblocks[ldrv_num%0x80] += |
| mbox->m_out.numsectors; |
| } |
| #endif |
| } |
| |
| /* |
| * 12-byte READ(0xA8) or WRITE(0xAA) cdb |
| */ |
| if( cmd->cmd_len == 12 ) { |
| mbox->m_out.lba = |
| ((u32)cmd->cmnd[2] << 24) | |
| ((u32)cmd->cmnd[3] << 16) | |
| ((u32)cmd->cmnd[4] << 8) | |
| (u32)cmd->cmnd[5]; |
| |
| mbox->m_out.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->m_out.numsectors; |
| } else { |
| adapter->nwrites[ldrv_num%0x80]++; |
| adapter->nwriteblocks[ldrv_num%0x80] += |
| mbox->m_out.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->m_out.numsgelements = mega_build_sglist(adapter, scb, |
| (u32 *)&mbox->m_out.xferaddr, &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))) { |
| *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))) { |
| *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->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; |
| |
| mbox->m_out.xferaddr = scb->epthru_dma_addr; |
| |
| } |
| else { |
| |
| pthru = mega_prepare_passthru(adapter, scb, cmd, |
| channel, target); |
| |
| /* Initialize mailbox */ |
| if( adapter->has_64bit_addr ) { |
| mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; |
| } |
| else { |
| mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; |
| } |
| |
| mbox->m_out.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, struct 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->device->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->device->channel))) { |
| |
| dev_notice(&adapter->dev->dev, |
| "scsi%d: scanning scsi channel %d [P%d] " |
| "for physical devices\n", |
| adapter->host->host_no, |
| cmd->device->channel, channel); |
| |
| adapter->flag |= (1L << cmd->device->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, |
| struct 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->device->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->device->channel))) { |
| |
| dev_notice(&adapter->dev->dev, |
| "scsi%d: scanning scsi channel %d [P%d] " |
| "for physical devices\n", |
| adapter->host->host_no, |
| cmd->device->channel, channel); |
| |
| adapter->flag |= (1L << cmd->device->channel); |
| } |
| /* Fall through */ |
| default: |
| epthru->numsgelements = mega_build_sglist(adapter, scb, |
| &epthru->dataxferaddr, &epthru->dataxferlen); |
| break; |
| } |
| |
| return epthru; |
| } |
| |
| 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 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->m_in.busy)) { |
| do { |
| udelay(1); |
| i++; |
| } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); |
| |
| if(mbox->m_in.busy) return -1; |
| } |
| |
| /* Copy mailbox data into host structure */ |
| memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, |
| sizeof(struct mbox_out)); |
| |
| mbox->m_out.cmdid = scb->idx; /* Set cmdid */ |
| mbox->m_in.busy = 1; /* Set busy */ |
| |
| |
| /* |
| * Increment the pending queue counter |
| */ |
| atomic_inc(&adapter->pend_cmds); |
| |
| switch (mbox->m_out.cmd) { |
| case MEGA_MBOXCMD_LREAD64: |
| case MEGA_MBOXCMD_LWRITE64: |
| case MEGA_MBOXCMD_PASSTHRU64: |
| case MEGA_MBOXCMD_EXTPTHRU: |
| mbox64->xfer_segment_lo = mbox->m_out.xferaddr; |
| mbox64->xfer_segment_hi = 0; |
| mbox->m_out.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->m_in.poll = 0; |
| mbox->m_in.ack = 0; |
| WRINDOOR(adapter, adapter->mbox_dma | 0x1); |
| } |
| else { |
| irq_enable(adapter); |
| issue_command(adapter); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Wait until the controller's mailbox is available |
| */ |
| static inline int |
| mega_busywait_mbox (adapter_t *adapter) |
| { |
| if (adapter->mbox->m_in.busy) |
| return __mega_busywait_mbox(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; |
| |
| /* 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, sizeof(struct mbox_out)); |
| mbox->m_out.cmdid = 0xFE; |
| mbox->m_in.busy = 1; |
| |
| switch (raw_mbox[0]) { |
| case MEGA_MBOXCMD_LREAD64: |
| case MEGA_MBOXCMD_LWRITE64: |
| case MEGA_MBOXCMD_PASSTHRU64: |
| case MEGA_MBOXCMD_EXTPTHRU: |
| mbox64->xfer_segment_lo = mbox->m_out.xferaddr; |
| mbox64->xfer_segment_hi = 0; |
| mbox->m_out.xferaddr = 0xFFFFFFFF; |
| break; |
| default: |
| mbox64->xfer_segment_lo = 0; |
| mbox64->xfer_segment_hi = 0; |
| } |
| |
| if( likely(adapter->flag & BOARD_MEMMAP) ) { |
| mbox->m_in.poll = 0; |
| mbox->m_in.ack = 0; |
| mbox->m_in.numstatus = 0xFF; |
| mbox->m_in.status = 0xFF; |
| WRINDOOR(adapter, adapter->mbox_dma | 0x1); |
| |
| while((volatile u8)mbox->m_in.numstatus == 0xFF) |
| cpu_relax(); |
| |
| mbox->m_in.numstatus = 0xFF; |
| |
| while( (volatile u8)mbox->m_in.poll != 0x77 ) |
| cpu_relax(); |
| |
| mbox->m_in.poll = 0; |
| mbox->m_in.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(); |
| |
| set_irq_state(adapter, byte); |
| irq_enable(adapter); |
| irq_ack(adapter); |
| } |
| |
| return mbox->m_in.status; |
| |
| bug_blocked_mailbox: |
| dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n"); |
| udelay (1000); |
| return -1; |
| } |
| |
| |
| /** |
| * megaraid_isr_iomapped() |
| * @irq - irq |
| * @devp - pointer to our soft state |
| * |
| * 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 irqreturn_t |
| megaraid_isr_iomapped(int irq, void *devp) |
| { |
| adapter_t *adapter = devp; |
| unsigned long flags; |
| u8 status; |
| u8 nstatus; |
| u8 completed[MAX_FIRMWARE_STATUS]; |
| u8 byte; |
| int handled = 0; |
| |
| |
| /* |
| * loop till F/W has more commands for us to complete. |
| */ |
| spin_lock_irqsave(&adapter->lock, flags); |
| |
| do { |
| /* Check if a valid interrupt is pending */ |
| byte = irq_state(adapter); |
| if( (byte & VALID_INTR_BYTE) == 0 ) { |
| /* |
| * No more pending commands |
| */ |
| goto out_unlock; |
| } |
| set_irq_state(adapter, byte); |
| |
| while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) |
| == 0xFF) |
| cpu_relax(); |
| adapter->mbox->m_in.numstatus = 0xFF; |
| |
| status = adapter->mbox->m_in.status; |
| |
| /* |
| * decrement the pending queue counter |
| */ |
| atomic_sub(nstatus, &adapter->pend_cmds); |
| |
| memcpy(completed, (void *)adapter->mbox->m_in.completed, |
| nstatus); |
| |
| /* Acknowledge interrupt */ |
| irq_ack(adapter); |
| |
| mega_cmd_done(adapter, completed, nstatus, status); |
| |
| mega_rundoneq(adapter); |
| |
| handled = 1; |
| |
| /* Loop through any pending requests */ |
| if(atomic_read(&adapter->quiescent) == 0) { |
| mega_runpendq(adapter); |
| } |
| |
| } while(1); |
| |
| out_unlock: |
| |
| spin_unlock_irqrestore(&adapter->lock, flags); |
| |
| return IRQ_RETVAL(handled); |
| } |
| |
| |
| /** |
| * megaraid_isr_memmapped() |
| * @irq - irq |
| * @devp - pointer to our soft state |
| * |
| * 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 irqreturn_t |
| megaraid_isr_memmapped(int irq, void *devp) |
| { |
| adapter_t *adapter = devp; |
| unsigned long flags; |
| u8 status; |
| u32 dword = 0; |
| u8 nstatus; |
| u8 completed[MAX_FIRMWARE_STATUS]; |
| int handled = 0; |
| |
| |
| /* |
| * loop till F/W has more commands for us to complete. |
| */ |
| spin_lock_irqsave(&adapter->lock, flags); |
| |
| do { |
| /* Check if a valid interrupt is pending */ |
| dword = RDOUTDOOR(adapter); |
| if(dword != 0x10001234) { |
| /* |
| * No more pending commands |
| */ |
| goto out_unlock; |
| } |
| WROUTDOOR(adapter, 0x10001234); |
| |
| while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) |
| == 0xFF) { |
| cpu_relax(); |
| } |
| adapter->mbox->m_in.numstatus = 0xFF; |
| |
| status = adapter->mbox->m_in.status; |
| |
| /* |
| * decrement the pending queue counter |
| */ |
| atomic_sub(nstatus, &adapter->pend_cmds); |
| |
| memcpy(completed, (void *)adapter->mbox->m_in.completed, |
| nstatus); |
| |
| /* Acknowledge interrupt */ |
| WRINDOOR(adapter, 0x2); |
| |
| handled = 1; |
| |
| while( RDINDOOR(adapter) & 0x02 ) |
| cpu_relax(); |
| |
| mega_cmd_done(adapter, completed, nstatus, status); |
| |
| mega_rundoneq(adapter); |
| |
| /* Loop through any pending requests */ |
| if(atomic_read(&adapter->quiescent) == 0) { |
| mega_runpendq(adapter); |
| } |
| |
| } while(1); |
| |
| out_unlock: |
| |
| spin_unlock_irqrestore(&adapter->lock, flags); |
| |
| return IRQ_RETVAL(handled); |
| } |
| /** |
| * 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 commands and call the scsi mid-layer callback hooks. |
| */ |
| static void |
| mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) |
| { |
| mega_ext_passthru *epthru = NULL; |
| struct scatterlist *sgl; |
| struct scsi_cmnd *cmd = NULL; |
| mega_passthru *pthru = NULL; |
| mbox_t *mbox = NULL; |
| u8 c; |
| scb_t *scb; |
| int islogical; |
| 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]; |
| |
| /* |
| * 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) { |
| scb = &adapter->int_scb; |
| |
| list_del_init(&scb->list); |
| scb->state = SCB_FREE; |
| |
| adapter->int_status = status; |
| complete(&adapter->int_waitq); |
| } else { |
| scb = &adapter->scb_list[cmdid]; |
| |
| /* |
| * Make sure f/w has completed a valid command |
| */ |
| if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { |
| dev_crit(&adapter->dev->dev, "invalid command " |
| "Id %d, scb->state:%x, scsi cmd:%p\n", |
| cmdid, scb->state, scb->cmd); |
| |
| continue; |
| } |
| |
| /* |
| * Was a abort issued for this command |
| */ |
| if( scb->state & SCB_ABORT ) { |
| |
| dev_warn(&adapter->dev->dev, |
| "aborted cmd [%x] complete\n", |
| scb->idx); |
| |
| scb->cmd->result = (DID_ABORT << 16); |
| |
| list_add_tail(SCSI_LIST(scb->cmd), |
| &adapter->completed_list); |
| |
| mega_free_scb(adapter, scb); |
| |
| continue; |
| } |
| |
| /* |
| * Was a reset issued for this command |
| */ |
| if( scb->state & SCB_RESET ) { |
| |
| dev_warn(&adapter->dev->dev, |
| "reset cmd [%x] complete\n", |
| scb->idx); |
| |
| scb->cmd->result = (DID_RESET << 16); |
| |
| list_add_tail(SCSI_LIST(scb->cmd), |
| &adapter->completed_list); |
| |
| mega_free_scb (adapter, scb); |
| |
| continue; |
| } |
| |
| cmd = scb->cmd; |
| pthru = scb->pthru; |
| epthru = scb->epthru; |
| mbox = (mbox_t *)scb->raw_mbox; |
| |
| #if MEGA_HAVE_STATS |
| { |
| |
| int logdrv = mbox->m_out.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->device->channel]; |
| if( cmd->cmnd[0] == INQUIRY && !islogical ) { |
| |
| sgl = scsi_sglist(cmd); |
| if( sg_page(sgl) ) { |
| c = *(unsigned char *) sg_virt(&sgl[0]); |
| } else { |
| dev_warn(&adapter->dev->dev, "invalid sg\n"); |
| c = 0; |
| } |
| |
| if(IS_RAID_CH(adapter, cmd->device->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->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || |
| mbox->m_out.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->m_out.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; |
| } |
| |
| mega_free_scb(adapter, scb); |
| |
| /* Add Scsi_Command to end of completed queue */ |
| list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); |
| } |
| } |
| |
| |
| /* |
| * mega_runpendq() |
| * |
| * Run through the list of completed requests and finish it |
| */ |
| static void |
| mega_rundoneq (adapter_t *adapter) |
| { |
| struct scsi_cmnd *cmd; |
| struct list_head *pos; |
| |
| list_for_each(pos, &adapter->completed_list) { |
| |
| struct scsi_pointer* spos = (struct scsi_pointer *)pos; |
| |
| cmd = list_entry(spos, struct scsi_cmnd, SCp); |
| cmd->scsi_done(cmd); |
| } |
| |
| INIT_LIST_HEAD(&adapter->completed_list); |
| } |
| |
| |
| /* |
| * 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_SGLIST: |
| scsi_dma_unmap(scb->cmd); |
| 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); |
| } |
| |
| |
| static int |
| __mega_busywait_mbox (adapter_t *adapter) |
| { |
| volatile mbox_t *mbox = adapter->mbox; |
| long counter; |
| |
| for (counter = 0; counter < 10000; counter++) { |
| if (!mbox->m_in.busy) |
| return 0; |
| udelay(100); |
| cond_resched(); |
| } |
| 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 *sg; |
| struct scsi_cmnd *cmd; |
| int sgcnt; |
| int idx; |
| |
| cmd = scb->cmd; |
| |
| /* |
| * Copy Scatter-Gather list info into controller structure. |
| * |
| * The number of sg elements returned must not exceed our limit |
| */ |
| sgcnt = scsi_dma_map(cmd); |
| |
| scb->dma_type = MEGA_SGLIST; |
| |
| BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); |
| |
| *len = 0; |
| |
| if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { |
| sg = scsi_sglist(cmd); |
| scb->dma_h_bulkdata = sg_dma_address(sg); |
| *buf = (u32)scb->dma_h_bulkdata; |
| *len = sg_dma_len(sg); |
| return 0; |
| } |
| |
| scsi_for_each_sg(cmd, sg, sgcnt, idx) { |
| if (adapter->has_64bit_addr) { |
| scb->sgl64[idx].address = sg_dma_address(sg); |
| *len += scb->sgl64[idx].length = sg_dma_len(sg); |
| } else { |
| scb->sgl[idx].address = sg_dma_address(sg); |
| *len += scb->sgl[idx].length = sg_dma_len(sg); |
| } |
| } |
| |
| /* Reset pointer and length fields */ |
| *buf = scb->sgl_dma_addr; |
| |
| /* 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]; |
| } |
| |
| 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, |
| (u32)adapter->host->max_lun); |
| return buffer; |
| } |
| |
| /* |
| * 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(struct scsi_cmnd *cmd) |
| { |
| adapter_t *adapter; |
| int rval; |
| |
| adapter = (adapter_t *)cmd->device->host->hostdata; |
| |
| rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); |
| |
| /* |
| * This is required here to complete any completed requests |
| * to be communicated over to the mid layer. |
| */ |
| mega_rundoneq(adapter); |
| |
| return rval; |
| } |
| |
| |
| static int |
| megaraid_reset(struct scsi_cmnd *cmd) |
| { |
| adapter_t *adapter; |
| megacmd_t mc; |
| int rval; |
| |
| adapter = (adapter_t *)cmd->device->host->hostdata; |
| |
| #if MEGA_HAVE_CLUSTERING |
| mc.cmd = MEGA_CLUSTER_CMD; |
| mc.opcode = MEGA_RESET_RESERVATIONS; |
| |
| if( mega_internal_command(adapter, &mc, NULL) != 0 ) { |
| dev_warn(&adapter->dev->dev, "reservation reset failed\n"); |
| } |
| else { |
| dev_info(&adapter->dev->dev, "reservation reset\n"); |
| } |
| #endif |
| |
| spin_lock_irq(&adapter->lock); |
| |
| rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); |
| |
| /* |
| * This is required here to complete any completed requests |
| * to be communicated over to the mid layer. |
| */ |
| mega_rundoneq(adapter); |
| spin_unlock_irq(&adapter->lock); |
| |
| return rval; |
| } |
| |
| /** |
| * megaraid_abort_and_reset() |
| * @adapter - megaraid soft state |
| * @cmd - scsi command to be aborted or reset |
| * @aor - abort or reset flag |
| * |
| * Try to locate the scsi command in the pending queue. If found and is not |
| * issued to the controller, abort/reset it. Otherwise return failure |
| */ |
| static int |
| megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor) |
| { |
| struct list_head *pos, *next; |
| scb_t *scb; |
| |
| dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n", |
| (aor == SCB_ABORT)? "ABORTING":"RESET", |
| cmd->cmnd[0], cmd->device->channel, |
| cmd->device->id, (u32)cmd->device->lun); |
| |
| if(list_empty(&adapter->pending_list)) |
| return FAILED; |
| |
| list_for_each_safe(pos, next, &adapter->pending_list) { |
| |
| scb = list_entry(pos, scb_t, list); |
| |
| if (scb->cmd == cmd) { /* Found command */ |
| |
| scb->state |= aor; |
| |
| /* |
| * Check if this command has firmware ownership. If |
| * yes, we cannot reset this command. Whenever f/w |
| * completes this command, we will return appropriate |
| * status from ISR. |
| */ |
| if( scb->state & SCB_ISSUED ) { |
| |
| dev_warn(&adapter->dev->dev, |
| "%s[%x], fw owner\n", |
| (aor==SCB_ABORT) ? "ABORTING":"RESET", |
| scb->idx); |
| |
| return FAILED; |
| } |
| else { |
| |
| /* |
| * Not yet issued! Remove from the pending |
| * list |
| */ |
| dev_warn(&adapter->dev->dev, |
| "%s-[%x], driver owner\n", |
| (aor==SCB_ABORT) ? "ABORTING":"RESET", |
| scb->idx); |
| |
| mega_free_scb(adapter, scb); |
| |
| if( aor == SCB_ABORT ) { |
| cmd->result = (DID_ABORT << 16); |
| } |
| else { |
| cmd->result = (DID_RESET << 16); |
| } |
| |
| list_add_tail(SCSI_LIST(cmd), |
| &adapter->completed_list); |
| |
| return SUCCESS; |
| } |
| } |
| } |
| |
| return FAILED; |
| } |
| |
| static inline int |
| make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) |
| { |
| *pdev = pci_alloc_dev(NULL); |
| |
| if( *pdev == NULL ) return -1; |
| |
| memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); |
| |
| if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) { |
| kfree(*pdev); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static inline void |
| free_local_pdev(struct pci_dev *pdev) |
| { |
| kfree(pdev); |
| } |
| |
| /** |
| * mega_allocate_inquiry() |
| * @dma_handle - handle returned for dma address |
| * @pdev - handle to pci device |
| * |
| * allocates memory for inquiry structure |
| */ |
| static inline void * |
| 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(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) |
| { |
| pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); |
| } |
| |
| |
| #ifdef CONFIG_PROC_FS |
| /* Following code handles /proc fs */ |
| |
| /** |
| * proc_show_config() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display configuration information about the controller. |
| */ |
| static int |
| proc_show_config(struct seq_file *m, void *v) |
| { |
| |
| adapter_t *adapter = m->private; |
| |
| seq_puts(m, MEGARAID_VERSION); |
| if(adapter->product_info.product_name[0]) |
| seq_printf(m, "%s\n", adapter->product_info.product_name); |
| |
| seq_puts(m, "Controller Type: "); |
| |
| if( adapter->flag & BOARD_MEMMAP ) |
| seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); |
| else |
| seq_puts(m, "418/428/434\n"); |
| |
| if(adapter->flag & BOARD_40LD) |
| seq_puts(m, "Controller Supports 40 Logical Drives\n"); |
| |
| if(adapter->flag & BOARD_64BIT) |
| seq_puts(m, "Controller capable of 64-bit memory addressing\n"); |
| if( adapter->has_64bit_addr ) |
| seq_puts(m, "Controller using 64-bit memory addressing\n"); |
| else |
| seq_puts(m, "Controller is not using 64-bit memory addressing\n"); |
| |
| seq_printf(m, "Base = %08lx, Irq = %d, ", |
| adapter->base, adapter->host->irq); |
| |
| seq_printf(m, "Logical Drives = %d, Channels = %d\n", |
| adapter->numldrv, adapter->product_info.nchannels); |
| |
| seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", |
| adapter->fw_version, adapter->bios_version, |
| adapter->product_info.dram_size); |
| |
| seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", |
| adapter->product_info.max_commands, adapter->max_cmds); |
| |
| seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); |
| seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); |
| seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); |
| seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); |
| seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); |
| seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); |
| seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); |
| seq_printf(m, "quiescent = %d\n", |
| atomic_read(&adapter->quiescent)); |
| seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); |
| |
| seq_puts(m, "\nModule Parameters:\n"); |
| seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); |
| seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); |
| return 0; |
| } |
| |
| /** |
| * proc_show_stat() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display statistical information about the I/O activity. |
| */ |
| static int |
| proc_show_stat(struct seq_file *m, void *v) |
| { |
| adapter_t *adapter = m->private; |
| #if MEGA_HAVE_STATS |
| int i; |
| #endif |
| |
| seq_puts(m, "Statistical Information for this controller\n"); |
| seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); |
| #if MEGA_HAVE_STATS |
| for(i = 0; i < adapter->numldrv; i++) { |
| seq_printf(m, "Logical Drive %d:\n", i); |
| seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", |
| adapter->nreads[i], adapter->nwrites[i]); |
| seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", |
| adapter->nreadblocks[i], adapter->nwriteblocks[i]); |
| seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", |
| adapter->rd_errors[i], adapter->wr_errors[i]); |
| } |
| #else |
| seq_puts(m, "IO and error counters not compiled in driver.\n"); |
| #endif |
| return 0; |
| } |
| |
| |
| /** |
| * proc_show_mbox() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display mailbox information for the last command issued. This information |
| * is good for debugging. |
| */ |
| static int |
| proc_show_mbox(struct seq_file *m, void *v) |
| { |
| adapter_t *adapter = m->private; |
| volatile mbox_t *mbox = adapter->mbox; |
| |
| seq_puts(m, "Contents of Mail Box Structure\n"); |
| seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); |
| seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); |
| seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); |
| seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); |
| seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); |
| seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); |
| seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); |
| seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); |
| seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); |
| return 0; |
| } |
| |
| |
| /** |
| * proc_show_rebuild_rate() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display current rebuild rate |
| */ |
| static int |
| proc_show_rebuild_rate(struct seq_file *m, void *v) |
| { |
| adapter_t *adapter = m->private; |
| dma_addr_t dma_handle; |
| caddr_t inquiry; |
| struct pci_dev *pdev; |
| |
| if( make_local_pdev(adapter, &pdev) != 0 ) |
| return 0; |
| |
| if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
| goto free_pdev; |
| |
| if( mega_adapinq(adapter, dma_handle) != 0 ) { |
| seq_puts(m, "Adapter inquiry failed.\n"); |
| dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
| goto free_inquiry; |
| } |
| |
| if( adapter->flag & BOARD_40LD ) |
| seq_printf(m, "Rebuild Rate: [%d%%]\n", |
| ((mega_inquiry3 *)inquiry)->rebuild_rate); |
| else |
| seq_printf(m, "Rebuild Rate: [%d%%]\n", |
| ((mraid_ext_inquiry *) |
| inquiry)->raid_inq.adapter_info.rebuild_rate); |
| |
| free_inquiry: |
| mega_free_inquiry(inquiry, dma_handle, pdev); |
| free_pdev: |
| free_local_pdev(pdev); |
| return 0; |
| } |
| |
| |
| /** |
| * proc_show_battery() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display information about the battery module on the controller. |
| */ |
| static int |
| proc_show_battery(struct seq_file *m, void *v) |
| { |
| adapter_t *adapter = m->private; |
| dma_addr_t dma_handle; |
| caddr_t inquiry; |
| struct pci_dev *pdev; |
| u8 battery_status; |
| |
| if( make_local_pdev(adapter, &pdev) != 0 ) |
| return 0; |
| |
| if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
| goto free_pdev; |
| |
| if( mega_adapinq(adapter, dma_handle) != 0 ) { |
| seq_puts(m, "Adapter inquiry failed.\n"); |
| dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
| goto free_inquiry; |
| } |
| |
| 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 |
| */ |
| seq_printf(m, "Battery Status:[%d]", battery_status); |
| |
| if(battery_status == MEGA_BATT_CHARGE_DONE) |
| seq_puts(m, " Charge Done"); |
| |
| if(battery_status & MEGA_BATT_MODULE_MISSING) |
| seq_puts(m, " Module Missing"); |
| |
| if(battery_status & MEGA_BATT_LOW_VOLTAGE) |
| seq_puts(m, " Low Voltage"); |
| |
| if(battery_status & MEGA_BATT_TEMP_HIGH) |
| seq_puts(m, " Temperature High"); |
| |
| if(battery_status & MEGA_BATT_PACK_MISSING) |
| seq_puts(m, " Pack Missing"); |
| |
| if(battery_status & MEGA_BATT_CHARGE_INPROG) |
| seq_puts(m, " Charge In-progress"); |
| |
| if(battery_status & MEGA_BATT_CHARGE_FAIL) |
| seq_puts(m, " Charge Fail"); |
| |
| if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) |
| seq_puts(m, " Cycles Exceeded"); |
| |
| seq_putc(m, '\n'); |
| |
| free_inquiry: |
| mega_free_inquiry(inquiry, dma_handle, pdev); |
| free_pdev: |
| free_local_pdev(pdev); |
| return 0; |
| } |
| |
| |
| /* |
| * Display scsi inquiry |
| */ |
| static void |
| mega_print_inquiry(struct seq_file *m, char *scsi_inq) |
| { |
| int i; |
| |
| seq_puts(m, " Vendor: "); |
| seq_write(m, scsi_inq + 8, 8); |
| seq_puts(m, " Model: "); |
| seq_write(m, scsi_inq + 16, 16); |
| seq_puts(m, " Rev: "); |
| seq_write(m, scsi_inq + 32, 4); |
| seq_putc(m, '\n'); |
| |
| i = scsi_inq[0] & 0x1f; |
| seq_printf(m, " Type: %s ", scsi_device_type(i)); |
| |
| seq_printf(m, " ANSI SCSI revision: %02x", |
| scsi_inq[2] & 0x07); |
| |
| if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) |
| seq_puts(m, " CCS\n"); |
| else |
| seq_putc(m, '\n'); |
| } |
| |
| /** |
| * proc_show_pdrv() |
| * @m - Synthetic file construction data |
| * @page - buffer to write the data in |
| * @adapter - pointer to our soft state |
| * |
| * Display information about the physical drives. |
| */ |
| static int |
| proc_show_pdrv(struct seq_file *m, adapter_t *adapter, 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 i; |
| |
| if( make_local_pdev(adapter, &pdev) != 0 ) |
| return 0; |
| |
| if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
| goto free_pdev; |
| |
| if( mega_adapinq(adapter, dma_handle) != 0 ) { |
| seq_puts(m, "Adapter inquiry failed.\n"); |
| dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
| goto free_inquiry; |
| } |
| |
| |
| scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); |
| if( scsi_inq == NULL ) { |
| seq_puts(m, "memory not available for scsi inq.\n"); |
| goto free_inquiry; |
| } |
| |
| 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 ) { |
| goto free_pci; |
| } |
| |
| for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { |
| |
| i = channel*16 + tgt; |
| |
| state = *(pdrv_state + i); |
| switch( state & 0x0F ) { |
| case PDRV_ONLINE: |
| seq_printf(m, "Channel:%2d Id:%2d State: Online", |
| channel, tgt); |
| break; |
| |
| case PDRV_FAILED: |
| seq_printf(m, "Channel:%2d Id:%2d State: Failed", |
| channel, tgt); |
| break; |
| |
| case PDRV_RBLD: |
| seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", |
| channel, tgt); |
| break; |
| |
| case PDRV_HOTSPARE: |
| seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", |
| channel, tgt); |
| break; |
| |
| default: |
| seq_printf(m, "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 |
| */ |
| seq_puts(m, ".\n"); |
| mega_print_inquiry(m, scsi_inq); |
| } |
| |
| free_pci: |
| pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); |
| free_inquiry: |
| mega_free_inquiry(inquiry, dma_handle, pdev); |
| free_pdev: |
| free_local_pdev(pdev); |
| return 0; |
| } |
| |
| /** |
| * proc_show_pdrv_ch0() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display information about the physical drives on physical channel 0. |
| */ |
| static int |
| proc_show_pdrv_ch0(struct seq_file *m, void *v) |
| { |
| return proc_show_pdrv(m, m->private, 0); |
| } |
| |
| |
| /** |
| * proc_show_pdrv_ch1() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display information about the physical drives on physical channel 1. |
| */ |
| static int |
| proc_show_pdrv_ch1(struct seq_file *m, void *v) |
| { |
| return proc_show_pdrv(m, m->private, 1); |
| } |
| |
| |
| /** |
| * proc_show_pdrv_ch2() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display information about the physical drives on physical channel 2. |
| */ |
| static int |
| proc_show_pdrv_ch2(struct seq_file *m, void *v) |
| { |
| return proc_show_pdrv(m, m->private, 2); |
| } |
| |
| |
| /** |
| * proc_show_pdrv_ch3() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display information about the physical drives on physical channel 3. |
| */ |
| static int |
| proc_show_pdrv_ch3(struct seq_file *m, void *v) |
| { |
| return proc_show_pdrv(m, m->private, 3); |
| } |
| |
| |
| /** |
| * proc_show_rdrv() |
| * @m - Synthetic file construction data |
| * @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_show_rdrv(struct seq_file *m, adapter_t *adapter, 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 i; |
| |
| if( make_local_pdev(adapter, &pdev) != 0 ) |
| return 0; |
| |
| if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
| goto free_pdev; |
| |
| if( mega_adapinq(adapter, dma_handle) != 0 ) { |
| seq_puts(m, "Adapter inquiry failed.\n"); |
| dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
| goto free_inquiry; |
| } |
| |
| 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 = sizeof(disk_array_8ld); |
| |
| 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 ) { |
| seq_puts(m, "memory not available.\n"); |
| goto free_inquiry; |
| } |
| |
| 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, &mc, NULL) ) { |
| seq_puts(m, "40LD read config failed.\n"); |
| goto free_pci; |
| } |
| |
| } |
| else { |
| mc.cmd = NEW_READ_CONFIG_8LD; |
| |
| if( mega_internal_command(adapter, &mc, NULL) ) { |
| mc.cmd = READ_CONFIG_8LD; |
| if( mega_internal_command(adapter, &mc, NULL) ) { |
| seq_puts(m, "8LD read config failed.\n"); |
| goto free_pci; |
| } |
| } |
| } |
| |
| 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 { |
| lparam = |
| &((disk_array_8ld *)disk_array)->ldrv[i].lparam; |
| } |
| |
| /* |
| * Check for overflow. We print less than 240 characters for |
| * information about each logical drive. |
| */ |
| seq_printf(m, "Logical drive:%2d:, ", i); |
| |
| switch( rdrv_state[i] & 0x0F ) { |
| case RDRV_OFFLINE: |
| seq_puts(m, "state: offline"); |
| break; |
| case RDRV_DEGRADED: |
| seq_puts(m, "state: degraded"); |
| break; |
| case RDRV_OPTIMAL: |
| seq_puts(m, "state: optimal"); |
| break; |
| case RDRV_DELETED: |
| seq_puts(m, "state: deleted"); |
| break; |
| default: |
| seq_puts(m, "state: unknown"); |
| break; |
| } |
| |
| /* |
| * Check if check consistency or initialization is going on |
| * for this logical drive. |
| */ |
| if( (rdrv_state[i] & 0xF0) == 0x20 ) |
| seq_puts(m, ", check-consistency in progress"); |
| else if( (rdrv_state[i] & 0xF0) == 0x10 ) |
| seq_puts(m, ", initialization in progress"); |
| |
| seq_putc(m, '\n'); |
| |
| seq_printf(m, "Span depth:%3d, ", lparam->span_depth); |
| seq_printf(m, "RAID level:%3d, ", lparam->level); |
| seq_printf(m, "Stripe size:%3d, ", |
| lparam->stripe_sz ? lparam->stripe_sz/2: 128); |
| seq_printf(m, "Row size:%3d\n", lparam->row_size); |
| |
| seq_puts(m, "Read Policy: "); |
| switch(lparam->read_ahead) { |
| case NO_READ_AHEAD: |
| seq_puts(m, "No read ahead, "); |
| break; |
| case READ_AHEAD: |
| seq_puts(m, "Read ahead, "); |
| break; |
| case ADAP_READ_AHEAD: |
| seq_puts(m, "Adaptive, "); |
| break; |
| |
| } |
| |
| seq_puts(m, "Write Policy: "); |
| switch(lparam->write_mode) { |
| case WRMODE_WRITE_THRU: |
| seq_puts(m, "Write thru, "); |
| break; |
| case WRMODE_WRITE_BACK: |
| seq_puts(m, "Write back, "); |
| break; |
| } |
| |
| seq_puts(m, "Cache Policy: "); |
| switch(lparam->direct_io) { |
| case CACHED_IO: |
| seq_puts(m, "Cached IO\n\n"); |
| break; |
| case DIRECT_IO: |
| seq_puts(m, "Direct IO\n\n"); |
| break; |
| } |
| } |
| |
| free_pci: |
| pci_free_consistent(pdev, array_sz, disk_array, |
| disk_array_dma_handle); |
| free_inquiry: |
| mega_free_inquiry(inquiry, dma_handle, pdev); |
| free_pdev: |
| free_local_pdev(pdev); |
| return 0; |
| } |
| |
| /** |
| * proc_show_rdrv_10() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display real time information about the logical drives 0 through 9. |
| */ |
| static int |
| proc_show_rdrv_10(struct seq_file *m, void *v) |
| { |
| return proc_show_rdrv(m, m->private, 0, 9); |
| } |
| |
| |
| /** |
| * proc_show_rdrv_20() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display real time information about the logical drives 0 through 9. |
| */ |
| static int |
| proc_show_rdrv_20(struct seq_file *m, void *v) |
| { |
| return proc_show_rdrv(m, m->private, 10, 19); |
| } |
| |
| |
| /** |
| * proc_show_rdrv_30() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display real time information about the logical drives 0 through 9. |
| */ |
| static int |
| proc_show_rdrv_30(struct seq_file *m, void *v) |
| { |
| return proc_show_rdrv(m, m->private, 20, 29); |
| } |
| |
| |
| /** |
| * proc_show_rdrv_40() |
| * @m - Synthetic file construction data |
| * @v - File iterator |
| * |
| * Display real time information about the logical drives 0 through 9. |
| */ |
| static int |
| proc_show_rdrv_40(struct seq_file *m, void *v) |
| { |
| return proc_show_rdrv(m, m->private, 30, 39); |
| } |
| |
| /** |
| * 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) |
| { |
| adapter_t *adapter = hba_soft_state[index]; |
| struct proc_dir_entry *dir; |
| u8 string[16]; |
| |
| sprintf(string, "hba%d", adapter->host->host_no); |
| dir = proc_mkdir_data(string, 0, parent, adapter); |
| if (!dir) { |
| dev_warn(&adapter->dev->dev, "proc_mkdir failed\n"); |
| return; |
| } |
| |
| proc_create_single_data("config", S_IRUSR, dir, |
| proc_show_config, adapter); |
| proc_create_single_data("stat", S_IRUSR, dir, |
| proc_show_stat, adapter); |
| proc_create_single_data("mailbox", S_IRUSR, dir, |
| proc_show_mbox, adapter); |
| #if MEGA_HAVE_ENH_PROC |
| proc_create_single_data("rebuild-rate", S_IRUSR, dir, |
| proc_show_rebuild_rate, adapter); |
| proc_create_single_data("battery-status", S_IRUSR, dir, |
| proc_show_battery, adapter); |
| proc_create_single_data("diskdrives-ch0", S_IRUSR, dir, |
| proc_show_pdrv_ch0, adapter); |
| proc_create_single_data("diskdrives-ch1", S_IRUSR, dir, |
| proc_show_pdrv_ch1, adapter); |
| proc_create_single_data("diskdrives-ch2", S_IRUSR, dir, |
| proc_show_pdrv_ch2, adapter); |
| proc_create_single_data("diskdrives-ch3", S_IRUSR, dir, |
| proc_show_pdrv_ch3, adapter); |
| proc_create_single_data("raiddrives-0-9", S_IRUSR, dir, |
| proc_show_rdrv_10, adapter); |
| proc_create_single_data("raiddrives-10-19", S_IRUSR, dir, |
| proc_show_rdrv_20, adapter); |
| proc_create_single_data("raiddrives-20-29", S_IRUSR, dir, |
| proc_show_rdrv_30, adapter); |
| proc_create_single_data("raiddrives-30-39", S_IRUSR, dir, |
| proc_show_rdrv_40, adapter); |
| #endif |
| } |
| |
| #else |
| static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) |
| { |
| } |
| #endif |
| |
| |
| /** |
| * megaraid_biosparam() |
| * |
| * Return the disk geometry for a particular disk |
| */ |
| static int |
| megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
| sector_t capacity, int geom[]) |
| { |
| adapter_t *adapter; |
| unsigned char *bh; |
| int heads; |
| int sectors; |
| int cylinders; |
| int rval; |
| |
| /* Get pointer to host config structure */ |
| adapter = (adapter_t *)sdev->host->hostdata; |
| |
| if (IS_RAID_CH(adapter, sdev->channel)) { |
| /* Default heads (64) & sectors (32) */ |
| heads = 64; |
| sectors = 32; |
| cylinders = (ulong)capacity / (heads * sectors); |
| |
| /* |
| * Handle extended translation size for logical drives |
| * > 1Gb |
| */ |
| if ((ulong)capacity >= 0x200000) { |
| heads = 255; |
| sectors = 63; |
| cylinders = (ulong)capacity / (heads * sectors); |
| } |
| |
| /* return result */ |
| geom[0] = heads; |
| geom[1] = sectors; |
| geom[2] = cylinders; |
| } |
| else { |
| bh = scsi_bios_ptable(bdev); |
| |
| if( bh ) { |
| rval = scsi_partsize(bh, capacity, |
| &geom[2], &geom[0], &geom[1]); |
| kfree(bh); |
| if( rval != -1 ) |
| return rval; |
| } |
| |
| dev_info(&adapter->dev->dev, |
| "invalid partition on this disk on channel %d\n", |
| sdev->channel); |
| |
| /* Default heads (64) & sectors (32) */ |
| heads = 64; |
| sectors = 32; |
| cylinders = (ulong)capacity / (heads * sectors); |
| |
| /* Handle extended translation size for logical drives > 1Gb */ |
| if ((ulong)capacity >= 0x200000) { |
| heads = 255; |
| sectors = 63; |
| cylinders = (ulong)capacity / (heads * sectors); |
| } |
| |
| /* return result */ |
| geom[0] = heads; |
| geom[1] = sectors; |
| geom[2] = cylinders; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * 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 ) { |
| dev_warn(&adapter->dev->dev, "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 ) { |
| dev_warn(&adapter->dev->dev, "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 ) { |
| dev_warn(&adapter->dev->dev, |
| "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. |
| */ |
| 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; |
| |
| 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 file *filep, unsigned int cmd, unsigned long arg) |
| { |
| adapter_t *adapter; |
| nitioctl_t uioc; |
| int adapno; |
| int rval; |
| mega_passthru __user *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 __user *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 __user *)arg, &uioc)) != 0 ) |
| return rval; |
| |
| |
| switch( uioc.opcode ) { |
| |
| case GET_DRIVER_VER: |
| if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) |
| return (-EFAULT); |
| |
| break; |
| |
| case GET_N_ADAP: |
| if( put_user(hba_count, (u32 __user *)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 = 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 ) { |
| dev_warn(&adapter->dev->dev, "logdrv " |
| "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 __user *)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 ) { |
| |
| dev_warn(&adapter->dev->dev, "rejected passthru\n"); |
| |
| return (-EINVAL); |
| } |
| |
| /* |
| * For all internal commands, the buffer must be allocated in |
| * <4GB address range |
| */ |
| if( make_local_pdev(adapter, &pdev) != 0 ) |
| return -EIO; |
| |
| /* 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 ) { |
| free_local_pdev(pdev); |
| return (-ENOMEM); |
| } |
| |
| /* |
| * The user passthru structure |
| */ |
| upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; |
| |
| /* |
| * Copy in the user passthru here. |
| */ |
| if( copy_from_user(pthru, upthru, |
| sizeof(mega_passthru)) ) { |
| |
| pci_free_consistent(pdev, |
| sizeof(mega_passthru), pthru, |
| pthru_dma_hndl); |
| |
| free_local_pdev(pdev); |
| |
| 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); |
| |
| free_local_pdev(pdev); |
| |
| 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 __user *)(unsigned long) 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, &mc, pthru); |
| |
| rval = mega_n_to_m((void __user *)arg, &mc); |
| |
| if( rval ) goto freemem_and_return; |
| |
| |
|