Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
new file mode 100644
index 0000000..8d707b2
--- /dev/null
+++ b/drivers/scsi/megaraid.c
@@ -0,0 +1,5122 @@
+/*
+ *
+ * Linux MegaRAID device driver
+ *
+ * Copyright © 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 : v2.00.3 (Feb 19, 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 mailing list
+ * linux-scsi@vger.kernel.org .
+ *
+ */
+
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/blkdev.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/proc_fs.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 <scsi/scsicam.h>
+
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+
+#include "megaraid.h"
+
+#define MEGARAID_MODULE_VERSION "2.00.3"
+
+MODULE_AUTHOR ("LSI Logic Corporation");
+MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
+MODULE_LICENSE ("GPL");
+MODULE_VERSION(MEGARAID_MODULE_VERSION);
+
+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)->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];
+static struct proc_dir_entry *mega_proc_dir_entry;
+
+/* 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 = {
+ .owner = THIS_MODULE,
+ .ioctl = megadev_ioctl,
+ .open = megadev_open,
+};
+
+/*
+ * 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_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(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)))
+ printk(KERN_WARNING
+ "megaraid: 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; /* 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;
+}
+
+/**
+ * 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(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
+{
+ adapter_t *adapter;
+ scb_t *scb;
+ int busy=0;
+
+ 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.
+ */
+
+ 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_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_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->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, 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->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:
+ 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))) {
+ *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->device->channel))) {
+
+ printk(KERN_NOTICE
+ "scsi%d: scanning scsi channel %d ",
+ adapter->host->host_no,
+ cmd->device->channel);
+ printk("for logical drives.\n");
+
+ 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, (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))) {
+ *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, 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))) {
+
+ printk(KERN_NOTICE
+ "scsi%d: scanning scsi channel %d [P%d] ",
+ adapter->host->host_no,
+ cmd->device->channel, channel);
+ printk("for physical devices.\n");
+
+ 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, 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))) {
+
+ printk(KERN_NOTICE
+ "scsi%d: scanning scsi channel %d [P%d] ",
+ adapter->host->host_no,
+ cmd->device->channel, channel);
+ printk("for physical devices.\n");
+
+ 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:
+ 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 irqreturn_t
+megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
+{
+ 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
+ * @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 irqreturn_t
+megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
+{
+ 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 comamnds 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;
+ 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];
+
+ 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];
+
+ /*
+ * 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 a abort issued for this command
+ */
+ if( scb->state & SCB_ABORT ) {
+
+ printk(KERN_WARNING
+ "megaraid: aborted cmd %lx[%x] complete.\n",
+ scb->cmd->serial_number, 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 ) {
+
+ printk(KERN_WARNING
+ "megaraid: reset cmd %lx[%x] complete.\n",
+ scb->cmd->serial_number, 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 ) {
+
+ if( cmd->use_sg ) {
+ sgl = (struct scatterlist *)
+ cmd->request_buffer;
+
+ if( sgl->page ) {
+ c = *(unsigned char *)
+ page_address((&sgl[0])->page) +
+ (&sgl[0])->offset;
+ }
+ else {
+ printk(KERN_WARNING
+ "megaraid: invalid sg.\n");
+ c = 0;
+ }
+ }
+ else {
+ c = *(u8 *)cmd->request_buffer;
+ }
+
+ 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;
+ }
+
+ /*
+ * 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);
+ }
+
+ /* 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)
+{
+ Scsi_Cmnd *cmd;
+ struct list_head *pos;
+
+ list_for_each(pos, &adapter->completed_list) {
+
+ Scsi_Pointer* spos = (Scsi_Pointer *)pos;
+
+ cmd = list_entry(spos, 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_BULK_DATA:
+ pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
+ scb->cmd->request_bufflen, scb->dma_direction);
+ break;
+
+ case MEGA_SGLIST:
+ pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
+ scb->cmd->use_sg, scb->dma_direction);
+ 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); 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 = offset_in_page(cmd->request_buffer);
+
+ 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;
+ }
+ 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;
+
+ /* 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,
+ 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(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(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;
+
+ spin_unlock_irq(&adapter->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->lock);
+#endif
+
+ 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);
+
+ 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, Scsi_Cmnd *cmd, int aor)
+{
+ struct list_head *pos, *next;
+ scb_t *scb;
+
+ printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
+ (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
+ cmd->cmnd[0], cmd->device->channel,
+ cmd->device->id, cmd->device->lun);
+
+ if(list_empty(&adapter->pending_list))
+ return FALSE;
+
+ 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 firmare owenership. 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 ) {
+
+ printk(KERN_WARNING
+ "megaraid: %s-%lx[%x], fw owner.\n",
+ (aor==SCB_ABORT) ? "ABORTING":"RESET",
+ cmd->serial_number, scb->idx);
+
+ return FALSE;
+ }
+ else {
+
+ /*
+ * Not yet issued! Remove from the pending
+ * list
+ */
+ printk(KERN_WARNING
+ "megaraid: %s-%lx[%x], driver owner.\n",
+ (aor==SCB_ABORT) ? "ABORTING":"RESET",
+ cmd->serial_number, 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 TRUE;
+ }
+ }
+ }
+
+ return FALSE;
+}
+
+static inline int
+make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
+{
+ *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
+
+ if( *pdev == NULL ) return -1;
+
+ memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
+
+ if( pci_set_dma_mask(*pdev, 0xffffffff) != 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 */
+
+#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, "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->m_out.cmd);
+ len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
+ mbox->m_out.cmdid);
+ len += sprintf(page+len, " No of Sectors= %04d\n",
+ mbox->m_out.numsectors);
+ len += sprintf(page+len, " LBA = 0x%02x\n",
+ mbox->m_out.lba);
+ len += sprintf(page+len, " DTA = 0x%08x\n",
+ mbox->m_out.xferaddr);
+ len += sprintf(page+len, " Logical Drive= 0x%02x\n",
+ mbox->m_out.logdrv);
+ len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
+ mbox->m_out.numsgelements);
+ len += sprintf(page+len, " Busy = %01x\n",
+ mbox->m_in.busy);
+ len += sprintf(page+len, " Status = 0x%02x\n",
+ mbox->m_in.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;
+
+ if( make_local_pdev(adapter, &pdev) != 0 ) {
+ *eof = 1;
+ return len;
+ }
+
+ if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
+ free_local_pdev(pdev);
+ *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);
+
+ free_local_pdev(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);
+
+ free_local_pdev(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;
+
+ if( make_local_pdev(adapter, &pdev) != 0 ) {
+ *eof = 1;
+ return len;
+ }
+
+ if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
+ free_local_pdev(pdev);
+ *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);
+
+ free_local_pdev(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);
+
+ free_local_pdev(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;
+
+ if( make_local_pdev(adapter, &pdev) != 0 ) {
+ return len;
+ }
+
+ if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
+ goto free_pdev;
+ }
+
+ if( mega_adapinq(adapter, dma_handle) != 0 ) {
+ len = sprintf(page, "Adapter inquiry failed.\n");
+
+ printk(KERN_WARNING "megaraid: inquiry failed.\n");
+
+ goto free_inquiry;
+ }
+
+
+ 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");
+
+ 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:
+ 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);
+ }
+
+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 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 0 through 9.
+ */
+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 0 through 9.
+ */
+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 0 through 9.
+ */
+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;
+
+ if( make_local_pdev(adapter, &pdev) != 0 ) {
+ return len;
+ }
+
+ if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
+ free_local_pdev(pdev);
+ 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);
+
+ free_local_pdev(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 = 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 ) {
+ len = sprintf(page, "memory not available.\n");
+
+ mega_free_inquiry(inquiry, dma_handle, pdev);
+
+ free_local_pdev(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);
+
+ free_local_pdev(pdev);
+
+ return len;
+ }
+
+ }
+ else {
+ mc.cmd = NEW_READ_CONFIG_8LD;
+
+ if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
+
+ 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);
+
+ free_local_pdev(pdev);
+
+ 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 {
+ lparam =
+ &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
+ }
+
+ /*
+ * 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);
+
+ free_local_pdev(pdev);
+
+ return len;
+}
+
+#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;
+ }
+
+ printk(KERN_INFO
+ "megaraid: 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 ) {
+ 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;
+
+ 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 __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 ) {
+ 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 __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 ) {
+
+ printk(KERN_WARNING "megaraid: 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 *)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 *)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 __user *)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 __user *)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);
+
+ free_local_pdev(pdev);
+
+ 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 ) {
+ free_local_pdev(pdev);
+ 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 __user *)uxferaddr,
+ uioc.xferlen) ) {
+
+ pci_free_consistent(pdev,
+ uioc.xferlen,
+ data, data_dma_hndl);
+
+ free_local_pdev(pdev);
+
+ 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 __user *)arg, &mc);
+
+ if( rval ) {
+ if( uioc.xferlen ) {
+ pci_free_consistent(pdev,
+ uioc.xferlen, data,
+ data_dma_hndl);
+ }
+
+ free_local_pdev(pdev);
+
+ return rval;
+ }
+
+ /*
+ * Is data going up-stream
+ */
+ if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
+ if( copy_to_user((char __user *)uxferaddr, data,
+ uioc.xferlen) ) {
+
+ rval = (-EFAULT);
+ }
+ }
+
+ if( uioc.xferlen ) {
+ pci_free_consistent(pdev,
+ uioc.xferlen, data,
+ data_dma_hndl);
+ }
+
+ free_local_pdev(pdev);
+
+ 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 __user *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, 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, 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, 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 __user *arg, megacmd_t *mc)
+{
+ nitioctl_t __user *uiocp;
+ megacmd_t __user *umc;
+ mega_passthru __user *upthru;
+ struct uioctl_t __user *uioc_mimd;
+ char signature[8] = {0};
+
+ /*
+ * check is the application conforms to NIT.
+ */
+ if( copy_from_user(signature, arg, 7) )
+ return -EFAULT;
+
+ if( memcmp(signature, "MEGANIT", 7) == 0 ) {
+
+ uiocp = arg;
+
+ if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
+ return (-EFAULT);
+
+ if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
+
+ umc = MBOX_P(uiocp);
+
+ if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
+ return -EFAULT;
+
+ if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
+ return (-EFAULT);
+ }
+ }
+ else {
+ uioc_mimd = arg;
+
+ if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
+ return (-EFAULT);
+
+ if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
+
+ umc = (megacmd_t __user *)uioc_mimd->mbox;
+
+ if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
+ return (-EFAULT);
+
+ if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
+ return (-EFAULT);
+ }
+ }
+
+ 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(struct mbox_out)];
+ mbox_t *mbox;
+ int ret;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset(&mbox->m_out, 0, sizeof(raw_mbox));
+
+ memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
+
+ mbox->m_out.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(struct mbox_out)];
+ mbox_t *mbox;
+ int i;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset(&mbox->m_out, 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->m_out.xferaddr = (u32)adapter->buf_dma_handle;
+
+ /*
+ * Non-ROMB firmware 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(struct mbox_out)];
+ mbox_t *mbox;
+ u16 cksum = 0;
+ u8 *cksum_p;
+ u8 boot_pdrv;
+ int i;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset(&mbox->m_out, 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->m_out.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(struct mbox_out)];
+ mbox_t *mbox;
+ int rval;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset(&mbox->m_out, 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(struct mbox_out)];
+ mbox_t *mbox;
+ int rval;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset(&mbox->m_out, 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)
+{
+ unsigned long flags;
+ scb_t *scb;
+ int rval;
+
+ /*
+ * 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 ||
+ !list_empty(&adapter->pending_list))
+ msleep(1000); /* sleep for 1s */
+
+ rval = mega_do_del_logdrv(adapter, logdrv);
+
+ spin_lock_irqsave(&adapter->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 (scb->pthru->logdrv < 0x80 )
+ scb->pthru->logdrv += 0x80;
+ }
+ }
+
+ atomic_set(&adapter->quiescent, 0);
+
+ mega_runpendq(adapter);
+
+ spin_unlock_irqrestore(&adapter->lock, flags);
+
+ return rval;
+}
+
+
+static int
+mega_do_del_logdrv(adapter_t *adapter, int logdrv)
+{
+ megacmd_t mc;
+ int rval;
+
+ memset( &mc, 0, sizeof(megacmd_t));
+
+ mc.cmd = FC_DEL_LOGDRV;
+ mc.opcode = OP_DEL_LOGDRV;
+ mc.subopcode = logdrv;
+
+ rval = mega_internal_command(adapter, LOCK_INT, &mc, NULL);
+
+ /* 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(struct mbox_out)];
+ mbox_t *mbox;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset(mbox, 0, sizeof(raw_mbox));
+
+ memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
+
+ mbox->m_out.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(struct mbox_out)];
+ mbox_t *mbox;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset(mbox, 0, sizeof(raw_mbox));
+
+ memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
+
+ mbox->m_out.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_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_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
+ */
+ if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
+
+ pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
+ &pthru_dma_handle);
+
+ if( pthru == NULL ) {
+ free_local_pdev(pdev);
+ 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);
+
+ free_local_pdev(pdev);
+
+ return rval;
+}
+
+
+/**
+ * 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;
+ struct scsi_device *sdev;
+ 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));
+
+ sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
+ memset(sdev, 0, sizeof(struct scsi_device));
+ scmd->device = sdev;
+
+ scmd->device->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->lock, flags);
+
+ megaraid_queue(scmd, mega_internal_done);
+
+ if( ls == LOCK_INT ) spin_unlock_irqrestore(&adapter->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.
+ */
+#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;
+ kfree(sdev);
+
+ /*
+ * 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->device->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 struct scsi_host_template megaraid_template = {
+ .module = THIS_MODULE,
+ .name = "MegaRAID",
+ .proc_name = "megaraid",
+ .info = megaraid_info,
+ .queuecommand = megaraid_queue,
+ .bios_param = megaraid_biosparam,
+ .max_sectors = MAX_SECTORS_PER_IO,
+ .can_queue = MAX_COMMANDS,
+ .this_id = DEFAULT_INITIATOR_ID,
+ .sg_tablesize = MAX_SGLIST,
+ .cmd_per_lun = DEF_CMD_PER_LUN,
+ .use_clustering = ENABLE_CLUSTERING,
+ .eh_abort_handler = megaraid_abort,
+ .eh_device_reset_handler = megaraid_reset,
+ .eh_bus_reset_handler = megaraid_reset,
+ .eh_host_reset_handler = megaraid_reset,
+};
+
+static int __devinit
+megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct Scsi_Host *host;
+ adapter_t *adapter;
+ unsigned long mega_baseport, tbase, flag = 0;
+ u16 subsysid, subsysvid;
+ u8 pci_bus, pci_dev_func;
+ int irq, i, j;
+ int error = -ENODEV;
+
+ if (pci_enable_device(pdev))
+ goto out;
+ pci_set_master(pdev);
+
+ pci_bus = pdev->bus->number;
+ pci_dev_func = pdev->devfn;
+
+ /*
+ * The megaraid3 stuff reports the ID of the Intel part which is not
+ * remotely specific to the megaraid
+ */
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
+ u16 magic;
+ /*
+ * Don't fall over the Compaq management cards using the same
+ * PCI identifier
+ */
+ if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
+ pdev->subsystem_device == 0xC000)
+ return -ENODEV;
+ /* Now check the magic signature byte */
+ pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
+ if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
+ return -ENODEV;
+ /* Ok it is probably a megaraid */
+ }
+
+ /*
+ * For these vendor and device ids, signature offsets are not
+ * valid and 64 bit is implicit
+ */
+ if (id->driver_data & BOARD_64BIT)
+ flag |= BOARD_64BIT;
+ else {
+ u32 magic64;
+
+ 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;
+
+ printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
+ id->vendor, id->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) {
+ flag |= BOARD_MEMMAP;
+
+ if (!request_mem_region(mega_baseport, 128, "megaraid")) {
+ printk(KERN_WARNING "megaraid: mem region busy!\n");
+ goto out_disable_device;
+ }
+
+ mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
+ if (!mega_baseport) {
+ printk(KERN_WARNING
+ "megaraid: could not map hba memory\n");
+ goto out_release_region;
+ }
+ } else {
+ flag |= BOARD_IOMAP;
+ mega_baseport += 0x10;
+
+ if (!request_region(mega_baseport, 16, "megaraid"))
+ goto out_disable_device;
+ }
+
+ /* Initialize SCSI Host structure */
+ host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
+ if (!host)
+ goto out_iounmap;
+
+ 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;
+
+ INIT_LIST_HEAD(&adapter->free_list);
+ INIT_LIST_HEAD(&adapter->pending_list);
+ INIT_LIST_HEAD(&adapter->completed_list);
+
+ adapter->flag = flag;
+ spin_lock_init(&adapter->lock);
+ scsi_assign_lock(host, &adapter->lock);
+
+ 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 out_host_put;
+ }
+
+ adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
+ if (!adapter->scb_list) {
+ printk(KERN_WARNING "megaraid: out of RAM.\n");
+ goto out_free_cmd_buffer;
+ }
+
+ if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
+ megaraid_isr_memmapped : megaraid_isr_iomapped,
+ SA_SHIRQ, "megaraid", adapter)) {
+ printk(KERN_WARNING
+ "megaraid: Couldn't register IRQ %d!\n", irq);
+ goto out_free_scb_list;
+ }
+
+ if (mega_setup_mailbox(adapter))
+ goto out_free_irq;
+
+ if (mega_query_adapter(adapter))
+ goto out_free_mbox;
+
+ /*
+ * 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) {
+ 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;
+ } else {
+ 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;
+ }
+
+ /*
+ * 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 out_free_mbox;
+
+ /*
+ * 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 = id->device;
+ mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
+ mcontroller[i].pciid = -1;
+ mcontroller[i].pcivendor = id->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
+
+ pci_set_drvdata(pdev, host);
+
+ mega_create_proc_entry(hba_count, mega_proc_dir_entry);
+
+ error = scsi_add_host(host, &pdev->dev);
+ if (error)
+ goto out_free_mbox;
+
+ scsi_scan_host(host);
+ hba_count++;
+ return 0;
+
+ out_free_mbox:
+ pci_free_consistent(adapter->dev, sizeof(mbox64_t),
+ adapter->una_mbox64, adapter->una_mbox64_dma);
+ out_free_irq:
+ free_irq(adapter->host->irq, adapter);
+ out_free_scb_list:
+ kfree(adapter->scb_list);
+ out_free_cmd_buffer:
+ pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
+ adapter->mega_buffer, adapter->buf_dma_handle);
+ out_host_put:
+ scsi_host_put(host);
+ out_iounmap:
+ if (flag & BOARD_MEMMAP)
+ iounmap((void *)mega_baseport);
+ out_release_region:
+ if (flag & BOARD_MEMMAP)
+ release_mem_region(tbase, 128);
+ else
+ release_region(mega_baseport, 16);
+ out_disable_device:
+ pci_disable_device(pdev);
+ out:
+ return error;
+}
+
+static void
+__megaraid_shutdown(adapter_t *adapter)
+{
+ u_char raw_mbox[sizeof(struct mbox_out)];
+ mbox_t *mbox = (mbox_t *)raw_mbox;
+ int i;
+
+ /* Flush adapter cache */
+ memset(&mbox->m_out, 0, sizeof(raw_mbox));
+ raw_mbox[0] = FLUSH_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(&mbox->m_out, 0, sizeof(raw_mbox));
+ raw_mbox[0] = FLUSH_SYSTEM;
+
+ /* Issue a blocking (interrupts disabled) command to the card */
+ issue_scb_block(adapter, raw_mbox);
+
+ 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.
+ */
+ for (i = 0; i <= 10; i++)
+ mdelay(1000);
+}
+
+static void
+megaraid_remove_one(struct pci_dev *pdev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ adapter_t *adapter = (adapter_t *)host->hostdata;
+ char buf[12] = { 0 };
+
+ scsi_remove_host(host);
+
+ __megaraid_shutdown(adapter);
+
+ /* 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),
+ adapter->una_mbox64, adapter->una_mbox64_dma);
+
+ scsi_host_put(host);
+ pci_disable_device(pdev);
+
+ hba_count--;
+}
+
+static void
+megaraid_shutdown(struct device *dev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
+ adapter_t *adapter = (adapter_t *)host->hostdata;
+
+ __megaraid_shutdown(adapter);
+}
+
+static struct pci_device_id megaraid_pci_tbl[] = {
+ {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
+ {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
+ {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0,}
+};
+MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
+
+static struct pci_driver megaraid_pci_driver = {
+ .name = "megaraid",
+ .id_table = megaraid_pci_tbl,
+ .probe = megaraid_probe_one,
+ .remove = __devexit_p(megaraid_remove_one),
+ .driver = {
+ .shutdown = megaraid_shutdown,
+ },
+};
+
+static int __init megaraid_init(void)
+{
+ int error;
+
+ 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;
+
+#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");
+ }
+#endif
+ error = pci_module_init(&megaraid_pci_driver);
+ if (error) {
+#ifdef CONFIG_PROC_FS
+ remove_proc_entry("megaraid", &proc_root);
+#endif
+ return error;
+ }
+
+ /*
+ * 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);
+ if (!major) {
+ printk(KERN_WARNING
+ "megaraid: failed to register char device\n");
+ }
+
+ return 0;
+}
+
+static void __exit megaraid_exit(void)
+{
+ /*
+ * Unregister the character device interface to the driver.
+ */
+ unregister_chrdev(major, "megadev");
+
+ pci_unregister_driver(&megaraid_pci_driver);
+
+#ifdef CONFIG_PROC_FS
+ remove_proc_entry("megaraid", &proc_root);
+#endif
+}
+
+module_init(megaraid_init);
+module_exit(megaraid_exit);
+
+/* vi: set ts=8 sw=8 tw=78: */