1.26.00.039 - Fix bug in tw_chrdev_ioctl() polling code.
Fix data_buffer_length usage in tw_chrdev_ioctl().
Update contact information.
+ 1.26.02.000 - Convert driver to pci_driver format.
*/
#include <linux/module.h>
-
-MODULE_AUTHOR ("3ware Inc.");
-#ifdef CONFIG_SMP
-MODULE_DESCRIPTION ("3ware Storage Controller Linux Driver (SMP)");
-#else
-MODULE_DESCRIPTION ("3ware Storage Controller Linux Driver");
-#endif
-MODULE_LICENSE("GPL");
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/time.h>
-#include <linux/proc_fs.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/blkdev.h>
-#include <linux/hdreg.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/smp.h>
#include <linux/reboot.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
-
-#include <asm/errno.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/time.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
-
-#define __3W_C /* let 3w-xxxx.h know it is use */
-
-#include "scsi.h"
+#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
-
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi_cmnd.h>
#include "3w-xxxx.h"
-static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
-static int tw_chrdev_open(struct inode *inode, struct file *file);
-static int tw_chrdev_release(struct inode *inode, struct file *file);
-static int tw_copy_info(TW_Info *info, char *fmt, ...);
-static void tw_copy_mem_info(TW_Info *info, char *data, int len);
-static int tw_halt(struct notifier_block *nb, ulong event, void *buf);
-static int tw_map_scsi_sg_data(struct pci_dev *pdev, Scsi_Cmnd *cmd);
-static u32 tw_map_scsi_single_data(struct pci_dev *pdev, Scsi_Cmnd *cmd);
-static void tw_unmap_scsi_data(struct pci_dev *pdev, Scsi_Cmnd *cmd);
-
-/* Notifier block to get a notify on system shutdown/halt/reboot */
-static struct notifier_block tw_notifier = {
- tw_halt, NULL, 0
-};
-
-/* File operations struct for character device */
-static struct file_operations tw_fops = {
- .owner = THIS_MODULE,
- .ioctl = tw_chrdev_ioctl,
- .open = tw_chrdev_open,
- .release = tw_chrdev_release
-};
-
/* Globals */
-char *tw_driver_version="1.26.00.039";
-TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT];
-int tw_device_extension_count = 0;
+#define TW_DRIVER_VERSION "1.26.02.000"
+static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT];
+static int tw_device_extension_count = 0;
static int twe_major = -1;
-static int cmds_per_lun;
/* Module parameters */
-module_param(cmds_per_lun, int, 0);
-MODULE_PARM_DESC(cmds_per_lun, "Maximum commands per LUN");
+MODULE_AUTHOR("AMCC");
+MODULE_DESCRIPTION("3ware Storage Controller Linux Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(TW_DRIVER_VERSION);
+
+/* Function prototypes */
+static int tw_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset);
/* Functions */
-/* This function will complete an aen request from the isr */
-int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id)
+/* This function will check the status register for unexpected bits */
+static int tw_check_bits(u32 status_reg_value)
{
- TW_Param *param;
- unsigned short aen;
- int error = 0, table_max = 0;
-
- dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n");
- if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n");
+ if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value);
+ return 1;
+ }
+ if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value);
return 1;
}
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- aen = *(unsigned short *)(param->data);
- dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen);
- /* Print some useful info when certain aen codes come out */
- if (aen == 0x0ff) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no);
- } else {
- table_max = sizeof(tw_aen_string)/sizeof(char *);
- if ((aen & 0x0ff) < table_max) {
- if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') {
- printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8);
- } else {
- if (aen != 0x0)
- printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]);
- }
- } else {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen);
- }
+ return 0;
+} /* End tw_check_bits() */
+
+/* This function will print readable messages from status register errors */
+static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host)
+{
+ char host[16];
+
+ dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n");
+
+ if (print_host)
+ sprintf(host, " scsi%d:", tw_dev->host->host_no);
+ else
+ host[0] = '\0';
+
+ if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) {
+ printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host);
+ outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
}
- if (aen != TW_AEN_QUEUE_EMPTY) {
- tw_dev->aen_count++;
- /* Now queue the code */
- tw_dev->aen_queue[tw_dev->aen_tail] = aen;
- if (tw_dev->aen_tail == TW_Q_LENGTH - 1) {
- tw_dev->aen_tail = TW_Q_START;
- } else {
- tw_dev->aen_tail = tw_dev->aen_tail + 1;
- }
- if (tw_dev->aen_head == tw_dev->aen_tail) {
- if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
- tw_dev->aen_head = TW_Q_START;
- } else {
- tw_dev->aen_head = tw_dev->aen_head + 1;
- }
- }
+ if (status_reg_value & TW_STATUS_PCI_ABORT) {
+ printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host);
+ outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev));
+ pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT);
+ }
- error = tw_aen_read_queue(tw_dev, request_id);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no);
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- }
- } else {
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
+ if (status_reg_value & TW_STATUS_QUEUE_ERROR) {
+ printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host);
+ outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
}
+ if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) {
+ printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host);
+ outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
+ }
+
+ if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) {
+ if (tw_dev->reset_print == 0) {
+ printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host);
+ tw_dev->reset_print = 1;
+ }
+ return 1;
+ }
+
return 0;
-} /* End tw_aen_complete() */
+} /* End tw_decode_bits() */
-/* This function will drain the aen queue after a soft reset */
-int tw_aen_drain_queue(TW_Device_Extension *tw_dev)
+/* This function will poll the status register for a flag */
+static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds)
{
- TW_Command *command_packet;
- TW_Param *param;
- int request_id = 0;
- u32 command_que_addr;
- unsigned long command_que_value;
- unsigned long param_value;
- TW_Response_Queue response_queue;
- u32 response_que_addr;
- unsigned short aen;
- unsigned short aen_code;
- int finished = 0;
- int first_reset = 0;
- int queue = 0;
- int found = 0, table_max = 0;
+ u32 status_reg_value;
+ unsigned long before;
+ int retval = 1;
- dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n");
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+ before = jiffies;
- command_que_addr = tw_dev->registers.command_que_addr;
- response_que_addr = tw_dev->registers.response_que_addr;
+ if (tw_check_bits(status_reg_value))
+ tw_decode_bits(tw_dev, status_reg_value, 0);
- if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count);
- return 1;
+ while ((status_reg_value & flag) != flag) {
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+
+ if (tw_check_bits(status_reg_value))
+ tw_decode_bits(tw_dev, status_reg_value, 0);
+
+ if (time_after(jiffies, before + HZ * seconds))
+ goto out;
+
+ msleep(50);
}
- tw_clear_attention_interrupt(tw_dev);
+ retval = 0;
+out:
+ return retval;
+} /* End tw_poll_status() */
- /* Empty response queue */
- tw_empty_response_que(tw_dev);
+/* This function will poll the status register for disappearance of a flag */
+static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds)
+{
+ u32 status_reg_value;
+ unsigned long before;
+ int retval = 1;
- /* Initialize command packet */
- if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n");
- return 1;
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+ before = jiffies;
+
+ if (tw_check_bits(status_reg_value))
+ tw_decode_bits(tw_dev, status_reg_value, 0);
+
+ while ((status_reg_value & flag) != 0) {
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+
+ if (tw_check_bits(status_reg_value))
+ tw_decode_bits(tw_dev, status_reg_value, 0);
+
+ if (time_after(jiffies, before + HZ * seconds))
+ goto out;
+
+ msleep(50);
}
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte0.sgl_offset = 2;
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = 0;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.parameter_count = 1;
+ retval = 0;
+out:
+ return retval;
+} /* End tw_poll_status_gone() */
+
+/* This function will attempt to post a command packet to the board */
+static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id)
+{
+ u32 status_reg_value;
+ unsigned long command_que_value;
+
+ dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n");
command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n");
- return 1;
- }
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
- /* Now setup the param */
- if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n");
- return 1;
+ if (tw_check_bits(status_reg_value)) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n");
+ tw_decode_bits(tw_dev, status_reg_value, 1);
}
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- memset(param, 0, sizeof(TW_Sector));
- param->table_id = 0x401; /* AEN table */
- param->parameter_id = 2; /* Unit code */
- param->parameter_size_bytes = 2;
- param_value = tw_dev->alignment_physical_address[request_id];
- if (param_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n");
+
+ if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) {
+ /* We successfully posted the command packet */
+ outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
+ tw_dev->state[request_id] = TW_S_POSTED;
+ tw_dev->posted_request_count++;
+ if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) {
+ tw_dev->max_posted_request_count = tw_dev->posted_request_count;
+ }
+ } else {
+ /* Couldn't post the command packet, so we do it in the isr */
+ if (tw_dev->state[request_id] != TW_S_PENDING) {
+ tw_dev->state[request_id] = TW_S_PENDING;
+ tw_dev->pending_request_count++;
+ if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) {
+ tw_dev->max_pending_request_count = tw_dev->pending_request_count;
+ }
+ tw_dev->pending_queue[tw_dev->pending_tail] = request_id;
+ if (tw_dev->pending_tail == TW_Q_LENGTH-1) {
+ tw_dev->pending_tail = TW_Q_START;
+ } else {
+ tw_dev->pending_tail = tw_dev->pending_tail + 1;
+ }
+ }
+ TW_UNMASK_COMMAND_INTERRUPT(tw_dev);
return 1;
}
- command_packet->byte8.param.sgl[0].address = param_value;
- command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
+ return 0;
+} /* End tw_post_command_packet() */
- /* Now drain the controller's aen queue */
- do {
- /* Post command packet */
- outl(command_que_value, command_que_addr);
+/* This function will return valid sense buffer information for failed cmds */
+static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense)
+{
+ int i;
+ TW_Command *command;
- /* Now poll for completion */
- if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
- response_queue.value = inl(response_que_addr);
- request_id = (unsigned char)response_queue.u.response_id;
+ dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n");
+ command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- if (request_id != 0) {
- /* Unexpected request id */
- printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n");
- return 1;
- }
-
- if (command_packet->status != 0) {
- if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) {
- /* Bad response */
- tw_decode_sense(tw_dev, request_id, 0);
- return 1;
- } else {
- /* We know this is a 3w-1x00, and doesn't support aen's */
- return 0;
- }
- }
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Command failed: status = 0x%x, flags = 0x%x, unit #%d.\n", tw_dev->host->host_no, command->status, command->flags, TW_UNIT_OUT(command->unit__hostid));
- /* Now check the aen */
- aen = *(unsigned short *)(param->data);
- aen_code = (aen & 0x0ff);
- queue = 0;
- switch (aen_code) {
- case TW_AEN_QUEUE_EMPTY:
- dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
- if (first_reset != 1) {
- return 1;
- } else {
- finished = 1;
- }
- break;
- case TW_AEN_SOFT_RESET:
- if (first_reset == 0) {
- first_reset = 1;
- } else {
- printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
- tw_dev->aen_count++;
- queue = 1;
- }
- break;
- default:
- if (aen == 0x0ff) {
- printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n");
- } else {
- table_max = sizeof(tw_aen_string)/sizeof(char *);
- if ((aen & 0x0ff) < table_max) {
- if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') {
- printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8);
- } else {
- printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
- }
- } else
- printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen);
- }
- tw_dev->aen_count++;
- queue = 1;
- }
+ /* Attempt to return intelligent sense information */
+ if (fill_sense) {
+ if ((command->status == 0xc7) || (command->status == 0xcb)) {
+ for (i=0;i<(sizeof(tw_sense_table)/sizeof(tw_sense_table[0]));i++) {
+ if (command->flags == tw_sense_table[i][0]) {
- /* Now put the aen on the aen_queue */
- if (queue == 1) {
- tw_dev->aen_queue[tw_dev->aen_tail] = aen;
- if (tw_dev->aen_tail == TW_Q_LENGTH - 1) {
- tw_dev->aen_tail = TW_Q_START;
- } else {
- tw_dev->aen_tail = tw_dev->aen_tail + 1;
- }
- if (tw_dev->aen_head == tw_dev->aen_tail) {
- if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
- tw_dev->aen_head = TW_Q_START;
- } else {
- tw_dev->aen_head = tw_dev->aen_head + 1;
- }
+ /* Valid bit and 'current errors' */
+ tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70);
+
+ /* Sense key */
+ tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1];
+
+ /* Additional sense length */
+ tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */
+
+ /* Additional sense code */
+ tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2];
+
+ /* Additional sense code qualifier */
+ tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3];
+
+ tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
+ return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */
}
}
- found = 1;
- }
- if (found == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n");
- return 1;
}
- } while (finished == 0);
+
+ /* If no table match, error so we get a reset */
+ return 1;
+ }
return 0;
-} /* End tw_aen_drain_queue() */
+} /* End tw_decode_sense() */
+
+/* This function will report controller error status */
+static int tw_check_errors(TW_Device_Extension *tw_dev)
+{
+ u32 status_reg_value;
+
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+
+ if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) {
+ tw_decode_bits(tw_dev, status_reg_value, 0);
+ return 1;
+ }
+
+ return 0;
+} /* End tw_check_errors() */
+
+/* This function will empty the response que */
+static void tw_empty_response_que(TW_Device_Extension *tw_dev)
+{
+ u32 status_reg_value, response_que_value;
+
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+
+ while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
+ response_que_value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+ }
+} /* End tw_empty_response_que() */
+
+/* This function will free a request_id */
+static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id)
+{
+ tw_dev->free_queue[tw_dev->free_tail] = request_id;
+ tw_dev->state[request_id] = TW_S_FINISHED;
+ tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
+} /* End tw_state_request_finish() */
+
+/* This function will assign an available request_id */
+static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id)
+{
+ *request_id = tw_dev->free_queue[tw_dev->free_head];
+ tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH;
+ tw_dev->state[*request_id] = TW_S_STARTED;
+} /* End tw_state_request_start() */
+
+/* Show some statistics about the card */
+static ssize_t tw_show_stats(struct class_device *class_dev, char *buf)
+{
+ struct Scsi_Host *host = class_to_shost(class_dev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
+ unsigned long flags = 0;
+ ssize_t len;
+
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ len = snprintf(buf, PAGE_SIZE, "3w-xxxx Driver version: %s\n"
+ "Current commands posted: %4d\n"
+ "Max commands posted: %4d\n"
+ "Current pending commands: %4d\n"
+ "Max pending commands: %4d\n"
+ "Last sgl length: %4d\n"
+ "Max sgl length: %4d\n"
+ "Last sector count: %4d\n"
+ "Max sector count: %4d\n"
+ "SCSI Host Resets: %4d\n"
+ "AEN's: %4d\n",
+ TW_DRIVER_VERSION,
+ tw_dev->posted_request_count,
+ tw_dev->max_posted_request_count,
+ tw_dev->pending_request_count,
+ tw_dev->max_pending_request_count,
+ tw_dev->sgl_entries,
+ tw_dev->max_sgl_entries,
+ tw_dev->sector_count,
+ tw_dev->max_sector_count,
+ tw_dev->num_resets,
+ tw_dev->aen_count);
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+ return len;
+} /* End tw_show_stats() */
+
+/* This function will set a devices queue depth */
+static ssize_t tw_store_queue_depth(struct device *dev, const char *buf, size_t count)
+{
+ int queue_depth;
+ struct scsi_device *sdev = to_scsi_device(dev);
+
+ queue_depth = simple_strtoul(buf, NULL, 0);
+ if (queue_depth > TW_Q_LENGTH-2)
+ return -EINVAL;
+ scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
+
+ return count;
+} /* End tw_store_queue_depth() */
+
+/* Create sysfs 'queue_depth' entry */
+static struct device_attribute tw_queue_depth_attr = {
+ .attr = {
+ .name = "queue_depth",
+ .mode = S_IRUSR | S_IWUSR,
+ },
+ .store = tw_store_queue_depth
+};
+
+/* Device attributes initializer */
+static struct device_attribute *tw_dev_attrs[] = {
+ &tw_queue_depth_attr,
+ NULL,
+};
+
+/* Create sysfs 'stats' entry */
+static struct class_device_attribute tw_host_stats_attr = {
+ .attr = {
+ .name = "stats",
+ .mode = S_IRUGO,
+ },
+ .show = tw_show_stats
+};
+
+/* Host attributes initializer */
+static struct class_device_attribute *tw_host_attrs[] = {
+ &tw_host_stats_attr,
+ NULL,
+};
/* This function will read the aen queue from the isr */
-int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
+static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
{
TW_Command *command_packet;
TW_Param *param;
- u32 command_que_addr;
unsigned long command_que_value;
- u32 status_reg_value = 0, status_reg_addr;
+ u32 status_reg_value;
unsigned long param_value = 0;
dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n");
- command_que_addr = tw_dev->registers.command_que_addr;
- status_reg_addr = tw_dev->registers.status_reg_addr;
- status_reg_value = inl(status_reg_addr);
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
if (tw_check_bits(status_reg_value)) {
dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n");
tw_decode_bits(tw_dev, status_reg_value, 1);
}
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte0.sgl_offset = 2;
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
command_packet->size = 4;
command_packet->request_id = request_id;
- command_packet->byte3.unit = 0;
- command_packet->byte3.host_id = 0;
command_packet->status = 0;
command_packet->flags = 0;
command_packet->byte6.parameter_count = 1;
dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n");
tw_dev->srb[request_id] = NULL; /* Flag internal command */
tw_dev->state[request_id] = TW_S_POSTED;
- outl(command_que_value, command_que_addr);
+ outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
} else {
printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n");
return 1;
return 0;
} /* End tw_aen_read_queue() */
-/* This function will allocate memory */
-int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
+/* This function will complete an aen request from the isr */
+static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id)
{
- int i;
- dma_addr_t dma_handle;
- unsigned long *cpu_addr = NULL;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n");
+ TW_Param *param;
+ unsigned short aen;
+ int error = 0, table_max = 0;
- cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle);
- if (cpu_addr == NULL) {
- printk(KERN_WARNING "3w-xxxx: pci_alloc_consistent() failed.\n");
+ dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n");
+ if (tw_dev->alignment_virtual_address[request_id] == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n");
return 1;
}
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
+ aen = *(unsigned short *)(param->data);
+ dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen);
- if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) {
- printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n");
- pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle);
- return 1;
+ /* Print some useful info when certain aen codes come out */
+ if (aen == 0x0ff) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no);
+ } else {
+ table_max = sizeof(tw_aen_string)/sizeof(char *);
+ if ((aen & 0x0ff) < table_max) {
+ if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8);
+ } else {
+ if (aen != 0x0)
+ printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]);
+ }
+ } else {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen);
+ }
}
+ if (aen != TW_AEN_QUEUE_EMPTY) {
+ tw_dev->aen_count++;
- memset(cpu_addr, 0, size*TW_Q_LENGTH);
+ /* Now queue the code */
+ tw_dev->aen_queue[tw_dev->aen_tail] = aen;
+ if (tw_dev->aen_tail == TW_Q_LENGTH - 1) {
+ tw_dev->aen_tail = TW_Q_START;
+ } else {
+ tw_dev->aen_tail = tw_dev->aen_tail + 1;
+ }
+ if (tw_dev->aen_head == tw_dev->aen_tail) {
+ if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
+ tw_dev->aen_head = TW_Q_START;
+ } else {
+ tw_dev->aen_head = tw_dev->aen_head + 1;
+ }
+ }
- for (i=0;i<TW_Q_LENGTH;i++) {
- switch(which) {
- case 0:
- tw_dev->command_packet_physical_address[i] = dma_handle+(i*size);
- tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
- break;
- case 1:
- tw_dev->alignment_physical_address[i] = dma_handle+(i*size);
- tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
- break;
- default:
- printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n");
- return 1;
+ error = tw_aen_read_queue(tw_dev, request_id);
+ if (error) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no);
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
}
+ } else {
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
}
return 0;
-} /* End tw_allocate_memory() */
+} /* End tw_aen_complete() */
-/* This function will check the status register for unexpected bits */
-int tw_check_bits(u32 status_reg_value)
+/* This function will drain the aen queue after a soft reset */
+static int tw_aen_drain_queue(TW_Device_Extension *tw_dev)
{
- if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) {
- dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value);
- return 1;
- }
- if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) {
- dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value);
- return 1;
- }
-
- return 0;
-} /* End tw_check_bits() */
+ TW_Command *command_packet;
+ TW_Param *param;
+ int request_id = 0;
+ unsigned long command_que_value;
+ unsigned long param_value;
+ TW_Response_Queue response_queue;
+ unsigned short aen;
+ unsigned short aen_code;
+ int finished = 0;
+ int first_reset = 0;
+ int queue = 0;
+ int found = 0, table_max = 0;
-/* This function will report controller error status */
-int tw_check_errors(TW_Device_Extension *tw_dev)
-{
- u32 status_reg_addr, status_reg_value;
-
- status_reg_addr = tw_dev->registers.status_reg_addr;
- status_reg_value = inl(status_reg_addr);
+ dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n");
- if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) {
- tw_decode_bits(tw_dev, status_reg_value, 0);
+ if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count);
return 1;
}
+ TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
- return 0;
-} /* End tw_check_errors() */
+ /* Empty response queue */
+ tw_empty_response_que(tw_dev);
-/* This function handles ioctl for the character device */
-static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
- int error, request_id;
- dma_addr_t dma_handle;
- unsigned short tw_aen_code;
- unsigned long flags;
+ /* Initialize command packet */
+ if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n");
+ return 1;
+ }
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ memset(command_packet, 0, sizeof(TW_Sector));
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
+ command_packet->size = 4;
+ command_packet->request_id = request_id;
+ command_packet->status = 0;
+ command_packet->flags = 0;
+ command_packet->byte6.parameter_count = 1;
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
+ if (command_que_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n");
+ return 1;
+ }
+
+ /* Now setup the param */
+ if (tw_dev->alignment_virtual_address[request_id] == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n");
+ return 1;
+ }
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
+ memset(param, 0, sizeof(TW_Sector));
+ param->table_id = 0x401; /* AEN table */
+ param->parameter_id = 2; /* Unit code */
+ param->parameter_size_bytes = 2;
+ param_value = tw_dev->alignment_physical_address[request_id];
+ if (param_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n");
+ return 1;
+ }
+ command_packet->byte8.param.sgl[0].address = param_value;
+ command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
+
+ /* Now drain the controller's aen queue */
+ do {
+ /* Post command packet */
+ outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
+
+ /* Now poll for completion */
+ if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
+ response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+ request_id = TW_RESID_OUT(response_queue.response_id);
+
+ if (request_id != 0) {
+ /* Unexpected request id */
+ printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n");
+ return 1;
+ }
+
+ if (command_packet->status != 0) {
+ if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) {
+ /* Bad response */
+ tw_decode_sense(tw_dev, request_id, 0);
+ return 1;
+ } else {
+ /* We know this is a 3w-1x00, and doesn't support aen's */
+ return 0;
+ }
+ }
+
+ /* Now check the aen */
+ aen = *(unsigned short *)(param->data);
+ aen_code = (aen & 0x0ff);
+ queue = 0;
+ switch (aen_code) {
+ case TW_AEN_QUEUE_EMPTY:
+ dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
+ if (first_reset != 1) {
+ return 1;
+ } else {
+ finished = 1;
+ }
+ break;
+ case TW_AEN_SOFT_RESET:
+ if (first_reset == 0) {
+ first_reset = 1;
+ } else {
+ printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
+ tw_dev->aen_count++;
+ queue = 1;
+ }
+ break;
+ default:
+ if (aen == 0x0ff) {
+ printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n");
+ } else {
+ table_max = sizeof(tw_aen_string)/sizeof(char *);
+ if ((aen & 0x0ff) < table_max) {
+ if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') {
+ printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8);
+ } else {
+ printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
+ }
+ } else
+ printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen);
+ }
+ tw_dev->aen_count++;
+ queue = 1;
+ }
+
+ /* Now put the aen on the aen_queue */
+ if (queue == 1) {
+ tw_dev->aen_queue[tw_dev->aen_tail] = aen;
+ if (tw_dev->aen_tail == TW_Q_LENGTH - 1) {
+ tw_dev->aen_tail = TW_Q_START;
+ } else {
+ tw_dev->aen_tail = tw_dev->aen_tail + 1;
+ }
+ if (tw_dev->aen_head == tw_dev->aen_tail) {
+ if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
+ tw_dev->aen_head = TW_Q_START;
+ } else {
+ tw_dev->aen_head = tw_dev->aen_head + 1;
+ }
+ }
+ }
+ found = 1;
+ }
+ if (found == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n");
+ return 1;
+ }
+ } while (finished == 0);
+
+ return 0;
+} /* End tw_aen_drain_queue() */
+
+/* This function will allocate memory */
+static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
+{
+ int i;
+ dma_addr_t dma_handle;
+ unsigned long *cpu_addr = NULL;
+
+ dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n");
+
+ cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle);
+ if (cpu_addr == NULL) {
+ printk(KERN_WARNING "3w-xxxx: pci_alloc_consistent() failed.\n");
+ return 1;
+ }
+
+ if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) {
+ printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n");
+ pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle);
+ return 1;
+ }
+
+ memset(cpu_addr, 0, size*TW_Q_LENGTH);
+
+ for (i=0;i<TW_Q_LENGTH;i++) {
+ switch(which) {
+ case 0:
+ tw_dev->command_packet_physical_address[i] = dma_handle+(i*size);
+ tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
+ break;
+ case 1:
+ tw_dev->alignment_physical_address[i] = dma_handle+(i*size);
+ tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
+ break;
+ default:
+ printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n");
+ return 1;
+ }
+ }
+
+ return 0;
+} /* End tw_allocate_memory() */
+
+/* This function handles ioctl for the character device */
+static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int request_id;
+ dma_addr_t dma_handle;
+ unsigned short tw_aen_code;
+ unsigned long flags;
unsigned int data_buffer_length = 0;
unsigned long data_buffer_length_adjusted = 0;
unsigned long *cpu_addr;
return -EINTR;
/* First copy down the buffer length */
- error = copy_from_user(&data_buffer_length, argp, sizeof(unsigned int));
- if (error)
+ if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int)))
goto out;
/* Check size */
data_buffer_length_adjusted = (data_buffer_length + 511) & ~511;
/* Now allocate ioctl buf memory */
- cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, &dma_handle);
+ cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, &dma_handle, GFP_KERNEL);
if (cpu_addr == NULL) {
retval = -ENOMEM;
goto out;
tw_ioctl = (TW_New_Ioctl *)cpu_addr;
/* Now copy down the entire ioctl */
- error = copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1);
- if (error)
+ if (copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1))
goto out2;
passthru = (TW_Passthru *)&tw_ioctl->firmware_command;
break;
case TW_CMD_PACKET_WITH_DATA:
dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n");
- spin_lock_irqsave(&tw_dev->tw_lock, flags);
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
tw_state_request_start(tw_dev, &request_id);
tw_ioctl->firmware_command.request_id = request_id;
/* Load the sg list */
- switch (tw_ioctl->firmware_command.byte0.sgl_offset) {
+ switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) {
case 2:
tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1;
tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted;
/* Now post the command packet to the controller */
tw_post_command_packet(tw_dev, request_id);
- spin_unlock_irqrestore(&tw_dev->tw_lock, flags);
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
/* Now wait for the command to complete */
timeout = wait_event_interruptible_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
+ /* See if we reset while waiting for the ioctl to complete */
+ if (test_bit(TW_IN_RESET, &tw_dev->flags)) {
+ clear_bit(TW_IN_RESET, &tw_dev->flags);
+ retval = -ERESTARTSYS;
+ goto out2;
+ }
+
/* Check if we timed out, got a signal, or didn't get
an interrupt */
if ((timeout <= 0) && (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE)) {
printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd);
retval = -EIO;
}
- spin_lock_irqsave(&tw_dev->tw_lock, flags);
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
tw_dev->state[request_id] = TW_S_COMPLETED;
tw_state_request_finish(tw_dev, request_id);
tw_dev->posted_request_count--;
- if (tw_reset_device_extension(tw_dev)) {
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+ if (tw_reset_device_extension(tw_dev, 1)) {
printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev->host->host_no);
}
- spin_unlock_irqrestore(&tw_dev->tw_lock, flags);
goto out2;
}
memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command));
/* Now complete the io */
- spin_lock_irqsave(&tw_dev->tw_lock, flags);
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
tw_dev->posted_request_count--;
tw_dev->state[request_id] = TW_S_COMPLETED;
tw_state_request_finish(tw_dev, request_id);
- spin_unlock_irqrestore(&tw_dev->tw_lock, flags);
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
break;
default:
retval = -ENOTTY;
}
/* Now copy the response to userspace */
- error = copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1);
- if (error == 0)
- retval = 0;
+ if (copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1))
+ goto out2;
+ retval = 0;
out2:
/* Now free ioctl buf memory */
- pci_free_consistent(tw_dev->tw_pci_dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle);
+ dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle);
out:
up(&tw_dev->ioctl_sem);
return retval;
return 0;
} /* End tw_chrdev_open() */
-/* This function handles close for the character device */
-static int tw_chrdev_release(struct inode *inode, struct file *file)
-{
- dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_release()\n");
-
- return 0;
-} /* End tw_chrdev_release() */
+/* File operations struct for character device */
+static struct file_operations tw_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = tw_chrdev_ioctl,
+ .open = tw_chrdev_open,
+ .release = NULL
+};
-/* This function will clear all interrupts on the controller */
-void tw_clear_all_interrupts(TW_Device_Extension *tw_dev)
+/* This function will free up device extension resources */
+static void tw_free_device_extension(TW_Device_Extension *tw_dev)
{
- u32 control_reg_addr, control_reg_value;
+ dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n");
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = TW_STATUS_VALID_INTERRUPT;
- outl(control_reg_value, control_reg_addr);
-} /* End tw_clear_all_interrupts() */
+ /* Free command packet and generic buffer memory */
+ if (tw_dev->command_packet_virtual_address[0])
+ pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Command)*TW_Q_LENGTH, tw_dev->command_packet_virtual_address[0], tw_dev->command_packet_physical_address[0]);
-/* This function will clear the attention interrupt */
-void tw_clear_attention_interrupt(TW_Device_Extension *tw_dev)
-{
- u32 control_reg_addr, control_reg_value;
-
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = TW_CONTROL_CLEAR_ATTENTION_INTERRUPT;
- outl(control_reg_value, control_reg_addr);
-} /* End tw_clear_attention_interrupt() */
+ if (tw_dev->alignment_virtual_address[0])
+ pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Sector)*TW_Q_LENGTH, tw_dev->alignment_virtual_address[0], tw_dev->alignment_physical_address[0]);
+} /* End tw_free_device_extension() */
-/* This function will clear the host interrupt */
-void tw_clear_host_interrupt(TW_Device_Extension *tw_dev)
+/* This function will send an initconnection command to controller */
+static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits)
{
- u32 control_reg_addr, control_reg_value;
+ unsigned long command_que_value;
+ TW_Command *command_packet;
+ TW_Response_Queue response_queue;
+ int request_id = 0;
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = TW_CONTROL_CLEAR_HOST_INTERRUPT;
- outl(control_reg_value, control_reg_addr);
-} /* End tw_clear_host_interrupt() */
+ dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n");
-/* This function is called by tw_scsi_proc_info */
-static int tw_copy_info(TW_Info *info, char *fmt, ...)
-{
- va_list args;
- char buf[81];
- int len;
-
- va_start(args, fmt);
- len = vsprintf(buf, fmt, args);
- va_end(args);
- tw_copy_mem_info(info, buf, len);
- return len;
-} /* End tw_copy_info() */
+ /* Initialize InitConnection command packet */
+ if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n");
+ return 1;
+ }
-/* This function is called by tw_scsi_proc_info */
-static void tw_copy_mem_info(TW_Info *info, char *data, int len)
-{
- if (info->position + len > info->length)
- len = info->length - info->position;
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ memset(command_packet, 0, sizeof(TW_Sector));
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION);
+ command_packet->size = TW_INIT_COMMAND_PACKET_SIZE;
+ command_packet->request_id = request_id;
+ command_packet->status = 0x0;
+ command_packet->flags = 0x0;
+ command_packet->byte6.message_credits = message_credits;
+ command_packet->byte8.init_connection.response_queue_pointer = 0x0;
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (info->position + len < info->offset) {
- info->position += len;
- return;
- }
- if (info->position < info->offset) {
- data += (info->offset - info->position);
- len -= (info->offset - info->position);
+ if (command_que_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n");
+ return 1;
}
- if (len > 0) {
- memcpy(info->buffer + info->position, data, len);
- info->position += len;
+
+ /* Send command packet to the board */
+ outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
+
+ /* Poll for completion */
+ if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
+ response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+ request_id = TW_RESID_OUT(response_queue.response_id);
+
+ if (request_id != 0) {
+ /* unexpected request id */
+ printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n");
+ return 1;
+ }
+ if (command_packet->status != 0) {
+ /* bad response */
+ tw_decode_sense(tw_dev, request_id, 0);
+ return 1;
+ }
}
-} /* End tw_copy_mem_info() */
+ return 0;
+} /* End tw_initconnection() */
-/* This function will print readable messages from status register errors */
-int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host)
+/* Set a value in the features table */
+static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size,
+ unsigned char *val)
{
- char host[16];
-
- dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n");
-
- if (print_host)
- sprintf(host, " scsi%d:", tw_dev->host->host_no);
- else
- host[0] = '\0';
+ TW_Param *param;
+ TW_Command *command_packet;
+ TW_Response_Queue response_queue;
+ int request_id = 0;
+ unsigned long command_que_value;
+ unsigned long param_value;
- if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) {
- printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host);
- outl(TW_CONTROL_CLEAR_PARITY_ERROR, tw_dev->registers.control_reg_addr);
+ /* Initialize SetParam command packet */
+ if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n");
+ return 1;
}
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ memset(command_packet, 0, sizeof(TW_Sector));
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- if (status_reg_value & TW_STATUS_PCI_ABORT) {
- printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host);
- outl(TW_CONTROL_CLEAR_PCI_ABORT, tw_dev->registers.control_reg_addr);
- pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT);
- }
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
+ param->table_id = 0x404; /* Features table */
+ param->parameter_id = parm;
+ param->parameter_size_bytes = param_size;
+ memcpy(param->data, val, param_size);
- if (status_reg_value & TW_STATUS_QUEUE_ERROR) {
- printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host);
- outl(TW_CONTROL_CLEAR_QUEUE_ERROR, tw_dev->registers.control_reg_addr);
+ param_value = tw_dev->alignment_physical_address[request_id];
+ if (param_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n");
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
+ tw_dev->srb[request_id]->result = (DID_OK << 16);
+ tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
}
+ command_packet->byte8.param.sgl[0].address = param_value;
+ command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
- if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) {
- printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host);
- outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, tw_dev->registers.control_reg_addr);
- }
+ command_packet->size = 4;
+ command_packet->request_id = request_id;
+ command_packet->byte6.parameter_count = 1;
- if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) {
- if (tw_dev->reset_print == 0) {
- printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host);
- tw_dev->reset_print = 1;
- }
- return 1;
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
+ if (command_que_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n");
+ return 1;
}
-
- return 0;
-} /* End tw_decode_bits() */
-
-/* This function will return valid sense buffer information for failed cmds */
-int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense)
-{
- int i;
- TW_Command *command;
-
- dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n");
- command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- printk(KERN_WARNING "3w-xxxx: scsi%d: Command failed: status = 0x%x, flags = 0x%x, unit #%d.\n", tw_dev->host->host_no, command->status, command->flags, command->byte3.unit);
-
- /* Attempt to return intelligent sense information */
- if (fill_sense) {
- if ((command->status == 0xc7) || (command->status == 0xcb)) {
- for (i=0;i<(sizeof(tw_sense_table)/sizeof(tw_sense_table[0]));i++) {
- if (command->flags == tw_sense_table[i][0]) {
-
- /* Valid bit and 'current errors' */
- tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70);
-
- /* Sense key */
- tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1];
-
- /* Additional sense length */
- tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */
-
- /* Additional sense code */
- tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2];
+ /* Send command packet to the board */
+ outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
- /* Additional sense code qualifier */
- tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3];
+ /* Poll for completion */
+ if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
+ response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+ request_id = TW_RESID_OUT(response_queue.response_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
- return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */
- }
- }
+ if (request_id != 0) {
+ /* unexpected request id */
+ printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n");
+ return 1;
+ }
+ if (command_packet->status != 0) {
+ /* bad response */
+ tw_decode_sense(tw_dev, request_id, 0);
+ return 1;
}
-
- /* If no table match, error so we get a reset */
- return 1;
}
return 0;
-} /* End tw_decode_sense() */
-
-/* This function will disable interrupts on the controller */
-void tw_disable_interrupts(TW_Device_Extension *tw_dev)
-{
- u32 control_reg_value, control_reg_addr;
-
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = TW_CONTROL_DISABLE_INTERRUPTS;
- outl(control_reg_value, control_reg_addr);
-} /* End tw_disable_interrupts() */
-
-/* This function will empty the response que */
-void tw_empty_response_que(TW_Device_Extension *tw_dev)
-{
- u32 status_reg_addr, status_reg_value;
- u32 response_que_addr, response_que_value;
-
- status_reg_addr = tw_dev->registers.status_reg_addr;
- response_que_addr = tw_dev->registers.response_que_addr;
-
- status_reg_value = inl(status_reg_addr);
-
- while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
- response_que_value = inl(response_que_addr);
- status_reg_value = inl(status_reg_addr);
- }
-} /* End tw_empty_response_que() */
-
-/* This function will enable interrupts on the controller */
-void tw_enable_interrupts(TW_Device_Extension *tw_dev)
-{
- u32 control_reg_value, control_reg_addr;
-
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = (TW_CONTROL_ENABLE_INTERRUPTS |
- TW_CONTROL_UNMASK_RESPONSE_INTERRUPT);
- outl(control_reg_value, control_reg_addr);
-} /* End tw_enable_interrupts() */
-
-/* This function will enable interrupts on the controller */
-void tw_enable_and_clear_interrupts(TW_Device_Extension *tw_dev)
-{
- u32 control_reg_value, control_reg_addr;
-
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = (TW_CONTROL_CLEAR_ATTENTION_INTERRUPT |
- TW_CONTROL_UNMASK_RESPONSE_INTERRUPT |
- TW_CONTROL_ENABLE_INTERRUPTS);
- outl(control_reg_value, control_reg_addr);
-} /* End tw_enable_and_clear_interrupts() */
+} /* End tw_setfeature() */
-/* This function will find and initialize all cards */
-int tw_findcards(Scsi_Host_Template *tw_host)
+/* This function will reset a controller */
+static int tw_reset_sequence(TW_Device_Extension *tw_dev)
{
- int numcards = 0, tries = 0, error = 0;
- struct Scsi_Host *host;
- TW_Device_Extension *tw_dev;
- TW_Device_Extension *tw_dev2;
- struct pci_dev *tw_pci_dev = NULL;
- u32 status_reg_value;
+ int error = 0;
+ int tries = 0;
unsigned char c = 1;
- int i, j = -1;
- u16 device[TW_NUMDEVICES] = { TW_DEVICE_ID, TW_DEVICE_ID2 };
- dprintk(KERN_NOTICE "3w-xxxx: tw_findcards()\n");
-
- for (i=0;i<TW_NUMDEVICES;i++) {
- while ((tw_pci_dev = pci_find_device(TW_VENDOR_ID, device[i], tw_pci_dev))) {
- j++;
- if (pci_enable_device(tw_pci_dev))
- continue;
-
- /* We only need 32-bit addressing for 5,6,7xxx cards */
- if (pci_set_dma_mask(tw_pci_dev, 0xffffffff)) {
- printk(KERN_WARNING "3w-xxxx: No suitable DMA available.\n");
- continue;
- }
-
- /* Prepare temporary device extension */
- tw_dev=(TW_Device_Extension *)kmalloc(sizeof(TW_Device_Extension), GFP_ATOMIC);
- if (tw_dev == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_findcards(): kmalloc() failed for card %d.\n", j);
- continue;
- }
- memset(tw_dev, 0, sizeof(TW_Device_Extension));
-
- /* Save pci_dev struct to device extension */
- tw_dev->tw_pci_dev = tw_pci_dev;
-
- error = tw_initialize_device_extension(tw_dev);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: tw_findcards(): Couldn't initialize device extension for card %d.\n", j);
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- continue;
- }
-
- /* Calculate the cards register addresses */
- tw_dev->registers.base_addr = pci_resource_start(tw_pci_dev, 0);
- tw_dev->registers.control_reg_addr = pci_resource_start(tw_pci_dev, 0);
- tw_dev->registers.status_reg_addr = pci_resource_start(tw_pci_dev, 0) + 0x4;
- tw_dev->registers.command_que_addr = pci_resource_start(tw_pci_dev, 0) + 0x8;
- tw_dev->registers.response_que_addr = pci_resource_start(tw_pci_dev, 0) + 0xC;
-
- /* Check for errors and clear them */
- status_reg_value = inl(tw_dev->registers.status_reg_addr);
- if (TW_STATUS_ERRORS(status_reg_value))
- tw_decode_bits(tw_dev, status_reg_value, 0);
-
- /* Poll status register for 60 secs for 'Controller Ready' flag */
- if (tw_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY, 60)) {
- printk(KERN_WARNING "3w-xxxx: tw_findcards(): Microcontroller not ready for card %d.\n", j);
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- continue;
- }
-
- /* Disable interrupts on the card */
- tw_disable_interrupts(tw_dev);
-
- tries = 0;
-
- while (tries < TW_MAX_RESET_TRIES) {
- /* Do soft reset */
- tw_soft_reset(tw_dev);
-
- error = tw_aen_drain_queue(tw_dev);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: AEN drain failed for card %d.\n", j);
- tries++;
- continue;
- }
-
- /* Check for controller errors */
- if (tw_check_errors(tw_dev)) {
- printk(KERN_WARNING "3w-xxxx: Controller errors found, retrying for card %d.\n", j);
- tries++;
- continue;
- }
-
- /* Now the controller is in a good state */
- break;
- }
-
- if (tries >= TW_MAX_RESET_TRIES) {
- printk(KERN_WARNING "3w-xxxx: Controller errors, card not responding, check all cabling for card %d.\n", j);
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- continue;
- }
-
- /* Reserve the io address space */
- if (!request_region((tw_dev->tw_pci_dev->resource[0].start), TW_IO_ADDRESS_RANGE, TW_DEVICE_NAME)) {
- printk(KERN_WARNING "3w-xxxx: tw_findcards(): Couldn't get io range 0x%lx-0x%lx for card %d.\n",
- (tw_dev->tw_pci_dev->resource[0].start),
- (tw_dev->tw_pci_dev->resource[0].start) +
- TW_IO_ADDRESS_RANGE, j);
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- continue;
- }
-
- error = tw_initialize_units(tw_dev);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: No valid units for for card %d.\n", j);
- }
-
- error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: Connection initialization failed for card %d.\n", j);
- release_region((tw_dev->tw_pci_dev->resource[0].start), TW_IO_ADDRESS_RANGE);
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- continue;
- }
-
- /* Set card status as online */
- tw_dev->online = 1;
-
- tw_dev->free_head = TW_Q_START;
- tw_dev->free_tail = TW_Q_START;
- tw_dev->free_wrap = TW_Q_LENGTH - 1;
-
- /* Register the card with the kernel SCSI layer */
- host = scsi_register(tw_host, sizeof(TW_Device_Extension));
- if (host == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_findcards(): scsi_register() failed for card %d.\n", j);
- release_region((tw_dev->tw_pci_dev->resource[0].start), TW_IO_ADDRESS_RANGE);
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- continue;
- }
-
- /* Set max target id's */
- host->max_id = TW_MAX_UNITS;
-
- /* Set max cdb size in bytes */
- host->max_cmd_len = 16;
-
- /* Set max sectors per io */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,7)
- host->max_sectors = TW_MAX_SECTORS;
-#endif
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- scsi_set_device(host, &tw_pci_dev->dev);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4)
- scsi_set_pci_device(host, tw_pci_dev);
-#endif
-
- status_reg_value = inl(tw_dev->registers.status_reg_addr);
-
- printk(KERN_NOTICE "scsi%d : Found a 3ware Storage Controller at 0x%x, IRQ: %d, P-chip: %d.%d\n", host->host_no,
- (u32)(tw_pci_dev->resource[0].start), tw_pci_dev->irq,
- (status_reg_value & TW_STATUS_MAJOR_VERSION_MASK) >> 28,
- (status_reg_value & TW_STATUS_MINOR_VERSION_MASK) >> 24);
-
- if (host->hostdata) {
- tw_dev2 = (TW_Device_Extension *)host->hostdata;
- memcpy(tw_dev2, tw_dev, sizeof(TW_Device_Extension));
- /* Need to init the sem/wqueue after the copy */
- init_MUTEX(&tw_dev2->ioctl_sem);
- init_waitqueue_head(&tw_dev2->ioctl_wqueue);
-
- tw_device_extension_list[tw_device_extension_count] = tw_dev2;
- numcards++;
- tw_device_extension_count = numcards;
- tw_dev2->host = host;
- } else {
- printk(KERN_WARNING "3w-xxxx: tw_findcards(): Bad scsi host data for card %d.\n", j);
- scsi_unregister(host);
- release_region((tw_dev->tw_pci_dev->resource[0].start), TW_IO_ADDRESS_RANGE);
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- continue;
- }
-
- /* Tell the firmware we support shutdown notification*/
- error = tw_setfeature(tw_dev2, 2, 1, &c);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: Unable to set features for card %d, old firmware or card.\n", j);
- }
-
- /* Now setup the interrupt handler */
- error = tw_setup_irq(tw_dev2);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: tw_findcards(): Error requesting irq for card %d.\n", j);
- scsi_unregister(host);
- release_region((tw_dev->tw_pci_dev->resource[0].start), TW_IO_ADDRESS_RANGE);
-
- tw_free_device_extension(tw_dev);
- kfree(tw_dev);
- numcards--;
- continue;
- }
-
- /* Re-enable interrupts on the card */
- tw_enable_interrupts(tw_dev2);
+ /* Reset the board */
+ while (tries < TW_MAX_RESET_TRIES) {
+ TW_SOFT_RESET(tw_dev);
- /* Free the temporary device extension */
- if (tw_dev)
- kfree(tw_dev);
+ error = tw_aen_drain_queue(tw_dev);
+ if (error) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no);
+ tries++;
+ continue;
}
- }
- if (numcards == 0) {
- printk(KERN_WARNING "3w-xxxx: No cards found.\n");
- } else {
- register_reboot_notifier(&tw_notifier);
- if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0) {
- printk(KERN_WARNING "3w-xxxx: Unable to register \"twe\" character device, error = %d.\n", twe_major);
+ /* Check for controller errors */
+ if (tw_check_errors(tw_dev)) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no);
+ tries++;
+ continue;
}
- }
-
- return numcards;
-} /* End tw_findcards() */
-
-/* This function will free up device extension resources */
-void tw_free_device_extension(TW_Device_Extension *tw_dev)
-{
- dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n");
-
- /* Free command packet and generic buffer memory */
- if (tw_dev->command_packet_virtual_address[0])
- pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Command)*TW_Q_LENGTH, tw_dev->command_packet_virtual_address[0], tw_dev->command_packet_physical_address[0]);
-
- if (tw_dev->alignment_virtual_address[0])
- pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Sector)*TW_Q_LENGTH, tw_dev->alignment_virtual_address[0], tw_dev->alignment_physical_address[0]);
-} /* End tw_free_device_extension() */
-
-/* Clean shutdown routine */
-static int tw_halt(struct notifier_block *nb, ulong event, void *buf)
-{
- int i;
- for (i=0;i<tw_device_extension_count;i++) {
- if (tw_device_extension_list[i]->online == 1) {
- printk(KERN_NOTICE "3w-xxxx: Shutting down card %d.\n", i);
- tw_shutdown_device(tw_device_extension_list[i]);
- tw_device_extension_list[i]->online = 0;
- }
+ /* Now the controller is in a good state */
+ break;
}
- unregister_reboot_notifier(&tw_notifier);
-
- return NOTIFY_OK;
-} /* End tw_halt() */
-
-/* This function will send an initconnection command to controller */
-int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits)
-{
- unsigned long command_que_value;
- u32 command_que_addr;
- u32 response_que_addr;
- TW_Command *command_packet;
- TW_Response_Queue response_queue;
- int request_id = 0;
- dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n");
- command_que_addr = tw_dev->registers.command_que_addr;
- response_que_addr = tw_dev->registers.response_que_addr;
-
- /* Initialize InitConnection command packet */
- if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n");
+ if (tries >= TW_MAX_RESET_TRIES) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no);
return 1;
}
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_INIT_CONNECTION;
- command_packet->byte0.sgl_offset = 0x0;
- command_packet->size = TW_INIT_COMMAND_PACKET_SIZE;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = 0x0;
- command_packet->byte3.host_id = 0x0;
- command_packet->status = 0x0;
- command_packet->flags = 0x0;
- command_packet->byte6.message_credits = message_credits;
- command_packet->byte8.init_connection.response_queue_pointer = 0x0;
- command_que_value = tw_dev->command_packet_physical_address[request_id];
-
- if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n");
+ error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS);
+ if (error) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no);
return 1;
}
-
- /* Send command packet to the board */
- outl(command_que_value, command_que_addr);
-
- /* Poll for completion */
- if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
- response_queue.value = inl(response_que_addr);
- request_id = (unsigned char)response_queue.u.response_id;
- if (request_id != 0) {
- /* unexpected request id */
- printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n");
- return 1;
- }
- if (command_packet->status != 0) {
- /* bad response */
- tw_decode_sense(tw_dev, request_id, 0);
- return 1;
- }
+
+ error = tw_setfeature(tw_dev, 2, 1, &c);
+ if (error) {
+ printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n");
}
+
return 0;
-} /* End tw_initconnection() */
+} /* End tw_reset_sequence() */
/* This function will initialize the fields of a device extension */
-int tw_initialize_device_extension(TW_Device_Extension *tw_dev)
+static int tw_initialize_device_extension(TW_Device_Extension *tw_dev)
{
int i, error=0;
tw_dev->pending_head = TW_Q_START;
tw_dev->pending_tail = TW_Q_START;
- spin_lock_init(&tw_dev->tw_lock);
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
+ init_MUTEX(&tw_dev->ioctl_sem);
+ init_waitqueue_head(&tw_dev->ioctl_wqueue);
+
return 0;
} /* End tw_initialize_device_extension() */
-/* This function will get unit info from the controller */
-int tw_initialize_units(TW_Device_Extension *tw_dev)
+static int tw_map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
+{
+ int use_sg;
+
+ dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n");
+
+ if (cmd->use_sg == 0)
+ return 0;
+
+ use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, DMA_BIDIRECTIONAL);
+
+ if (use_sg == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n");
+ return 0;
+ }
+
+ cmd->SCp.phase = TW_PHASE_SGLIST;
+ cmd->SCp.have_data_in = use_sg;
+
+ return use_sg;
+} /* End tw_map_scsi_sg_data() */
+
+static u32 tw_map_scsi_single_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
+{
+ dma_addr_t mapping;
+
+ dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data()\n");
+
+ if (cmd->request_bufflen == 0)
+ return 0;
+
+ mapping = pci_map_page(pdev, virt_to_page(cmd->request_buffer), offset_in_page(cmd->request_buffer), cmd->request_bufflen, DMA_BIDIRECTIONAL);
+
+ if (mapping == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data(): pci_map_page() failed.\n");
+ return 0;
+ }
+
+ cmd->SCp.phase = TW_PHASE_SINGLE;
+ cmd->SCp.have_data_in = mapping;
+
+ return mapping;
+} /* End tw_map_scsi_single_data() */
+
+static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
+{
+ dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n");
+
+ switch(cmd->SCp.phase) {
+ case TW_PHASE_SINGLE:
+ pci_unmap_page(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, DMA_BIDIRECTIONAL);
+ break;
+ case TW_PHASE_SGLIST:
+ pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL);
+ break;
+ }
+} /* End tw_unmap_scsi_data() */
+
+/* This function will reset a device extension */
+static int tw_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset)
+{
+ int i = 0;
+ struct scsi_cmnd *srb;
+ unsigned long flags = 0;
+
+ dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n");
+
+ set_bit(TW_IN_RESET, &tw_dev->flags);
+ TW_DISABLE_INTERRUPTS(tw_dev);
+ TW_MASK_COMMAND_INTERRUPT(tw_dev);
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+
+ /* Abort all requests that are in progress */
+ for (i=0;i<TW_Q_LENGTH;i++) {
+ if ((tw_dev->state[i] != TW_S_FINISHED) &&
+ (tw_dev->state[i] != TW_S_INITIAL) &&
+ (tw_dev->state[i] != TW_S_COMPLETED)) {
+ srb = tw_dev->srb[i];
+ if (srb != NULL) {
+ srb->result = (DID_RESET << 16);
+ tw_dev->srb[i]->scsi_done(tw_dev->srb[i]);
+ tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[i]);
+ }
+ }
+ }
+
+ /* Reset queues and counts */
+ for (i=0;i<TW_Q_LENGTH;i++) {
+ tw_dev->free_queue[i] = i;
+ tw_dev->state[i] = TW_S_INITIAL;
+ }
+ tw_dev->free_head = TW_Q_START;
+ tw_dev->free_tail = TW_Q_START;
+ tw_dev->posted_request_count = 0;
+ tw_dev->pending_request_count = 0;
+ tw_dev->pending_head = TW_Q_START;
+ tw_dev->pending_tail = TW_Q_START;
+ tw_dev->reset_print = 0;
+
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+
+ if (tw_reset_sequence(tw_dev)) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no);
+ return 1;
+ }
+ TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
+
+ /* Wake up any ioctl that was pending before the reset */
+ if ((tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE) || (ioctl_reset)) {
+ clear_bit(TW_IN_RESET, &tw_dev->flags);
+ } else {
+ tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
+ wake_up(&tw_dev->ioctl_wqueue);
+ }
+
+ return 0;
+} /* End tw_reset_device_extension() */
+
+/* This funciton returns unit geometry in cylinders/heads/sectors */
+static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev,
+ sector_t capacity, int geom[])
+{
+ int heads, sectors, cylinders;
+ TW_Device_Extension *tw_dev;
+
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n");
+ tw_dev = (TW_Device_Extension *)sdev->host->hostdata;
+
+ heads = 64;
+ sectors = 32;
+ cylinders = sector_div(capacity, heads * sectors);
+
+ if (capacity >= 0x200000) {
+ heads = 255;
+ sectors = 63;
+ cylinders = sector_div(capacity, heads * sectors);
+ }
+
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders);
+ geom[0] = heads;
+ geom[1] = sectors;
+ geom[2] = cylinders;
+
+ return 0;
+} /* End tw_scsi_biosparam() */
+
+/* This is the new scsi eh reset function */
+static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt)
+{
+ TW_Device_Extension *tw_dev=NULL;
+ int retval = FAILED;
+
+ tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
+
+ spin_unlock_irq(tw_dev->host->host_lock);
+
+ tw_dev->num_resets++;
+
+ printk(KERN_WARNING "3w-xxxx: scsi%d: WARNING: Unit #%d: Command (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, SCpnt->device->id, SCpnt->cmnd[0]);
+
+ /* Now reset the card and some of the device extension data */
+ if (tw_reset_device_extension(tw_dev, 0)) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no);
+ goto out;
+ }
+
+ retval = SUCCESS;
+out:
+ spin_lock_irq(tw_dev->host->host_lock);
+ return retval;
+} /* End tw_scsi_eh_reset() */
+
+/* This function handles scsi inquiry commands */
+static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id)
{
- int found = 0;
- unsigned char request_id = 0;
- TW_Command *command_packet;
TW_Param *param;
- int i, imax, num_units = 0;
+ TW_Command *command_packet;
unsigned long command_que_value;
- u32 command_que_addr;
- u32 response_que_addr;
- TW_Response_Queue response_queue;
unsigned long param_value;
- unsigned char *is_unit_present;
- dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_units()\n");
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n");
- command_que_addr = tw_dev->registers.command_que_addr;
- response_que_addr = tw_dev->registers.response_que_addr;
-
- /* Setup the command packet */
+ /* Initialize command packet */
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
if (command_packet == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_initialize_units(): Bad command packet virtual address.\n");
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n");
return 1;
}
memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte0.sgl_offset = 2;
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = 0;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.block_count = 1;
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
+ command_packet->size = 4;
+ command_packet->request_id = request_id;
+ command_packet->status = 0;
+ command_packet->flags = 0;
+ command_packet->byte6.parameter_count = 1;
/* Now setup the param */
if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_initialize_units(): Bad alignment virtual address.\n");
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n");
return 1;
}
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
memset(param, 0, sizeof(TW_Sector));
- param->table_id = 3; /* unit summary table */
- param->parameter_id = 3; /* unitstatus parameter */
+ param->table_id = 3; /* unit summary table */
+ param->parameter_id = 3; /* unitsstatus parameter */
param->parameter_size_bytes = TW_MAX_UNITS;
param_value = tw_dev->alignment_physical_address[request_id];
if (param_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_initialize_units(): Bad alignment physical address.\n");
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n");
return 1;
}
command_packet->byte8.param.sgl[0].address = param_value;
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
-
- /* Post the command packet to the board */
command_que_value = tw_dev->command_packet_physical_address[request_id];
if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_initialize_units(): Bad command packet physical address.\n");
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n");
return 1;
}
- outl(command_que_value, command_que_addr);
- /* Poll for completion */
- if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
- response_queue.value = inl(response_que_addr);
- request_id = (unsigned char)response_queue.u.response_id;
- if (request_id != 0) {
- /* unexpected request id */
- printk(KERN_WARNING "3w-xxxx: tw_initialize_units(): Unexpected request id.\n");
- return 1;
- }
- if (command_packet->status != 0) {
- /* bad response */
- tw_decode_sense(tw_dev, request_id, 0);
- return 1;
- }
- found = 1;
- }
- if (found == 0) {
- /* response never received */
- printk(KERN_WARNING "3w-xxxx: tw_initialize_units(): No response.\n");
+ /* Now try to post the command packet */
+ tw_post_command_packet(tw_dev, request_id);
+
+ return 0;
+} /* End tw_scsiop_inquiry() */
+
+/* This function is called by the isr to complete an inquiry command */
+static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id)
+{
+ unsigned char *is_unit_present;
+ unsigned char *request_buffer;
+ TW_Param *param;
+
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n");
+
+ /* Fill request buffer */
+ if (tw_dev->srb[request_id]->request_buffer == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Request buffer NULL.\n");
return 1;
}
+ request_buffer = tw_dev->srb[request_id]->request_buffer;
+ memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
+ request_buffer[0] = TYPE_DISK; /* Peripheral device type */
+ request_buffer[1] = 0; /* Device type modifier */
+ request_buffer[2] = 0; /* No ansi/iso compliance */
+ request_buffer[4] = 31; /* Additional length */
+ memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */
+ sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id);
+ memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3);
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- is_unit_present = (unsigned char *)&(param->data[0]);
-
- /* Show all units present */
- imax = TW_MAX_UNITS;
- for(i=0; i<imax; i++) {
- if (is_unit_present[i] == 0) {
- tw_dev->is_unit_present[i] = FALSE;
- } else {
- if (is_unit_present[i] & TW_UNIT_ONLINE) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_units(): Unit %d found.\n", i);
- tw_dev->is_unit_present[i] = TRUE;
- num_units++;
- }
- }
+ if (param == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n");
+ return 1;
}
- tw_dev->num_units = num_units;
+ is_unit_present = &(param->data[0]);
- if (num_units == 0) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_units(): No units found.\n");
- return 1;
+ if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) {
+ tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1;
+ } else {
+ tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0;
+ tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16);
+ return TW_ISR_DONT_RESULT;
}
return 0;
-} /* End tw_initialize_units() */
+} /* End tw_scsiop_inquiry_complete() */
-/* This function is the interrupt service routine */
-static irqreturn_t tw_interrupt(int irq, void *dev_instance,
- struct pt_regs *regs)
+/* This function handles scsi mode_sense commands */
+static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id)
{
- int request_id;
- u32 status_reg_addr, status_reg_value;
- u32 response_que_addr;
- TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
- TW_Response_Queue response_que;
- int error = 0, retval = 0;
- unsigned long flags = 0;
+ TW_Param *param;
TW_Command *command_packet;
- int handled = 0;
+ unsigned long command_que_value;
+ unsigned long param_value;
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt()\n");
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n");
- /* See if we are already running on another processor */
- if (test_and_set_bit(TW_IN_INTR, &tw_dev->flags))
- return IRQ_NONE;
+ /* Only page control = 0, page code = 0x8 (cache page) supported */
+ if (tw_dev->srb[request_id]->cmnd[2] != 0x8) {
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
+ tw_dev->srb[request_id]->result = (DID_OK << 16);
+ tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
+ return 0;
+ }
- /* Get the host lock for io completions */
- spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ /* Now read firmware cache setting for this unit */
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ if (command_packet == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n");
+ return 1;
+ }
- /* See if the interrupt matches this instance */
- if (tw_dev->tw_pci_dev->irq == irq) {
+ /* Setup the command packet */
+ memset(command_packet, 0, sizeof(TW_Sector));
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
+ command_packet->size = 4;
+ command_packet->request_id = request_id;
+ command_packet->status = 0;
+ command_packet->flags = 0;
+ command_packet->byte6.parameter_count = 1;
- handled = 1;
- /* Make sure io isn't queueing */
- spin_lock(&tw_dev->tw_lock);
+ /* Setup the param */
+ if (tw_dev->alignment_virtual_address[request_id] == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n");
+ return 1;
+ }
- /* Read the registers */
- status_reg_addr = tw_dev->registers.status_reg_addr;
- response_que_addr = tw_dev->registers.response_que_addr;
- status_reg_value = inl(status_reg_addr);
-
- /* Check if this is our interrupt, otherwise bail */
- if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT))
- goto tw_interrupt_bail;
-
- /* Check controller for errors */
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
- if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
- tw_clear_all_interrupts(tw_dev);
- goto tw_interrupt_bail;
- }
- }
-
- /* Handle host interrupt */
- if (status_reg_value & TW_STATUS_HOST_INTERRUPT) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n");
- tw_clear_host_interrupt(tw_dev);
- }
-
- /* Handle attention interrupt */
- if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n");
- tw_clear_attention_interrupt(tw_dev);
- tw_state_request_start(tw_dev, &request_id);
- error = tw_aen_read_queue(tw_dev, request_id);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no);
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- }
- }
-
- /* Handle command interrupt */
- if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) {
- /* Drain as many pending commands as we can */
- while (tw_dev->pending_request_count > 0) {
- request_id = tw_dev->pending_queue[tw_dev->pending_head];
- if (tw_dev->state[request_id] != TW_S_PENDING) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no);
- break;
- }
- if (tw_post_command_packet(tw_dev, request_id)==0) {
- if (tw_dev->pending_head == TW_Q_LENGTH-1) {
- tw_dev->pending_head = TW_Q_START;
- } else {
- tw_dev->pending_head = tw_dev->pending_head + 1;
- }
- tw_dev->pending_request_count--;
- } else {
- /* If we get here, we will continue re-posting on the next command interrupt */
- break;
- }
- }
- /* If there are no more pending requests, we mask command interrupt */
- if (tw_dev->pending_request_count == 0)
- tw_mask_command_interrupt(tw_dev);
- }
-
- /* Handle response interrupt */
- if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) {
- /* Drain the response queue from the board */
- while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
- /* Read response queue register */
- response_que.value = inl(response_que_addr);
- request_id = response_que.u.response_id;
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- error = 0;
-
- /* Check for bad response */
- if (command_packet->status != 0) {
- /* If internal command, don't error, don't fill sense */
- if (tw_dev->srb[request_id] == 0) {
- tw_decode_sense(tw_dev, request_id, 0);
- } else {
- error = tw_decode_sense(tw_dev, request_id, 1);
- }
- }
-
- /* Check for correct state */
- if (tw_dev->state[request_id] != TW_S_POSTED) {
- /* Handle timed out ioctl's */
- if (tw_dev->srb[request_id] != 0) {
- if (tw_dev->srb[request_id]->cmnd[0] != TW_IOCTL) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id (%d) (opcode = 0x%x) that wasn't posted.\n", tw_dev->host->host_no, request_id, command_packet->byte0.opcode);
- error = 1;
- }
- }
- }
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
+ memset(param, 0, sizeof(TW_Sector));
+ param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id;
+ param->parameter_id = 7; /* unit flags */
+ param->parameter_size_bytes = 1;
+ param_value = tw_dev->alignment_physical_address[request_id];
+ if (param_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n");
+ return 1;
+ }
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id);
+ command_packet->byte8.param.sgl[0].address = param_value;
+ command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
+ if (command_que_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n");
+ return 1;
+ }
- /* Check for internal command completion */
- if (tw_dev->srb[request_id] == 0) {
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n");
- /* Check for chrdev ioctl completion */
- if (request_id != tw_dev->chrdev_request_id) {
- retval = tw_aen_complete(tw_dev, request_id);
- if (retval) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no);
- }
- } else {
- tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
- wake_up(&tw_dev->ioctl_wqueue);
- }
- } else {
- switch (tw_dev->srb[request_id]->cmnd[0]) {
- case READ_10:
- case READ_6:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n");
- break;
- case WRITE_10:
- case WRITE_6:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n");
- break;
- case TEST_UNIT_READY:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n");
- error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id);
- break;
- case INQUIRY:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n");
- error = tw_scsiop_inquiry_complete(tw_dev, request_id);
- break;
- case READ_CAPACITY:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n");
- error = tw_scsiop_read_capacity_complete(tw_dev, request_id);
- break;
- case MODE_SENSE:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n");
- error = tw_scsiop_mode_sense_complete(tw_dev, request_id);
- break;
- case SYNCHRONIZE_CACHE:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n");
- break;
- case TW_IOCTL:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TW_IOCTL\n");
- error = tw_ioctl_complete(tw_dev, request_id);
- break;
- default:
- printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n");
- error = 1;
- }
+ /* Now try to post the command packet */
+ tw_post_command_packet(tw_dev, request_id);
+
+ return 0;
+} /* End tw_scsiop_mode_sense() */
- /* If no error command was a success */
- if (error == 0) {
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- }
+/* This function is called by the isr to complete a mode sense command */
+static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id)
+{
+ TW_Param *param;
+ unsigned char *flags;
+ unsigned char *request_buffer;
- /* If error, command failed */
- if (error == 1) {
- /* Ask for a host reset */
- tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
- }
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n");
- /* Now complete the io */
- if ((error != TW_ISR_DONT_COMPLETE)) {
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->posted_request_count--;
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
+ if (param == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n");
+ return 1;
+ }
+ flags = (char *)&(param->data[0]);
+ request_buffer = tw_dev->srb[request_id]->buffer;
+ memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
- tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
- }
- }
-
- /* Check for valid status after each drain */
- status_reg_value = inl(status_reg_addr);
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
- if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
- tw_clear_all_interrupts(tw_dev);
- goto tw_interrupt_bail;
- }
- }
- }
- }
-tw_interrupt_bail:
- spin_unlock(&tw_dev->tw_lock);
- } else
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt() called for wrong instance.\n");
+ request_buffer[0] = 0xf; /* mode data length */
+ request_buffer[1] = 0; /* default medium type */
+ request_buffer[2] = 0x10; /* dpo/fua support on */
+ request_buffer[3] = 0; /* no block descriptors */
+ request_buffer[4] = 0x8; /* caching page */
+ request_buffer[5] = 0xa; /* page length */
+ if (*flags & 0x1)
+ request_buffer[6] = 0x4; /* WCE on */
+ else
+ request_buffer[6] = 0x0; /* WCE off */
- spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
- clear_bit(TW_IN_INTR, &tw_dev->flags);
- return IRQ_RETVAL(handled);
-} /* End tw_interrupt() */
+ return 0;
+} /* End tw_scsiop_mode_sense_complete() */
-/* This function handles ioctls from userspace to the driver */
-int tw_ioctl(TW_Device_Extension *tw_dev, int request_id)
+/* This function handles scsi read_capacity commands */
+static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id)
{
- unsigned char opcode;
- int bufflen, error = 0;
TW_Param *param;
- TW_Command *command_packet, *command_save;
+ TW_Command *command_packet;
+ unsigned long command_que_value;
unsigned long param_value;
- TW_Ioctl *ioctl = NULL;
- TW_Passthru *passthru = NULL;
- int tw_aen_code, i, use_sg;
- unsigned long *data_ptr;
- int total_bytes = 0, posted = 0;
- dma_addr_t dma_handle;
- struct timeval before, timeout;
- ioctl = (TW_Ioctl *)tw_dev->srb[request_id]->request_buffer;
- if (ioctl == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): Request buffer NULL.\n");
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- return 0;
- }
- bufflen = tw_dev->srb[request_id]->request_bufflen;
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n");
/* Initialize command packet */
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+
if (command_packet == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): Bad command packet virtual address.\n");
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- return 0;
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n");
+ return 1;
}
memset(command_packet, 0, sizeof(TW_Sector));
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
+ command_packet->size = 4;
+ command_packet->request_id = request_id;
+ command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id);
+ command_packet->status = 0;
+ command_packet->flags = 0;
+ command_packet->byte6.block_count = 1;
- /* Initialize param */
+ /* Now setup the param */
if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): Bad alignment virtual address.\n");
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- return 0;
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n");
+ return 1;
}
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
memset(param, 0, sizeof(TW_Sector));
-
- dprintk(KERN_NOTICE "opcode = %d table_id = %d parameter_id = %d parameter_size_bytes = %d\n", ioctl->opcode, ioctl->table_id, ioctl->parameter_id, ioctl->parameter_size_bytes);
- opcode = ioctl->opcode;
-
- switch (opcode) {
- case TW_OP_NOP:
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl(): caught TW_OP_NOP.\n");
- command_packet->byte0.opcode = TW_OP_NOP;
- break;
- case TW_OP_GET_PARAM:
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl(): caught TW_OP_GET_PARAM.\n");
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte3.unit = ioctl->unit_index;
- param->table_id = ioctl->table_id;
- param->parameter_id = ioctl->parameter_id;
- param->parameter_size_bytes = ioctl->parameter_size_bytes;
- tw_dev->ioctl_size[request_id] = ioctl->parameter_size_bytes;
- dprintk(KERN_NOTICE "table_id = %d parameter_id = %d parameter_size_bytes %d\n", param->table_id, param->parameter_id, param->parameter_size_bytes);
- break;
- case TW_OP_SET_PARAM:
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl(): caught TW_OP_SET_PARAM: table_id = %d, parameter_id = %d, parameter_size_bytes = %d.\n",
- ioctl->table_id, ioctl->parameter_id, ioctl->parameter_size_bytes);
- if (ioctl->data != NULL) {
- command_packet->byte0.opcode = TW_OP_SET_PARAM;
- param->table_id = ioctl->table_id;
- param->parameter_id = ioctl->parameter_id;
- param->parameter_size_bytes = ioctl->parameter_size_bytes;
- memcpy(param->data, ioctl->data, ioctl->parameter_size_bytes);
- break;
- } else {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): ioctl->data NULL.\n");
- return 1;
- }
- case TW_OP_AEN_LISTEN:
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl(): caught TW_OP_AEN_LISTEN.\n");
- if (tw_dev->aen_head == tw_dev->aen_tail) {
- /* aen queue empty */
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl(): Aen queue empty.\n");
- tw_aen_code = TW_AEN_QUEUE_EMPTY;
- memcpy(tw_dev->srb[request_id]->request_buffer, &tw_aen_code, ioctl->parameter_size_bytes);
- } else {
- /* Copy aen queue entry to request buffer */
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl(): Returning aen 0x%x\n", tw_dev->aen_queue[tw_dev->aen_head]);
- tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head];
- memcpy(tw_dev->srb[request_id]->request_buffer, &tw_aen_code, ioctl->parameter_size_bytes);
- if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
- tw_dev->aen_head = TW_Q_START;
- } else {
- tw_dev->aen_head = tw_dev->aen_head + 1;
- }
- }
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- return 0;
- case TW_ATA_PASSTHRU:
- if (ioctl->data != NULL) {
- memcpy(command_packet, ioctl->data, sizeof(TW_Command));
- command_packet->request_id = request_id;
- } else {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): ioctl->data NULL.\n");
- return 1;
- }
-
- passthru = (TW_Passthru *)tw_dev->command_packet_virtual_address[request_id];
- /* Don't load sg_list for non-data ATA cmds */
- if ((passthru->param != 0) && (passthru->param != 0x8)) {
- passthru->sg_list[0].length = passthru->sector_count*512;
- if (passthru->sg_list[0].length > TW_MAX_PASSTHRU_BYTES) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): Passthru size (%d) too big.\n", passthru->sg_list[0].length);
- return 1;
- }
- passthru->sg_list[0].address = tw_dev->alignment_physical_address[request_id];
- }
- tw_post_command_packet(tw_dev, request_id);
- return 0;
- case TW_CMD_PACKET:
- dprintk(KERN_WARNING "3w-xxxx: tw_ioctl(): caught TW_CMD_PACKET.\n");
- if (ioctl->data != NULL) {
- memcpy(command_packet, ioctl->data, sizeof(TW_Command));
- command_packet->request_id = request_id;
- tw_post_command_packet(tw_dev, request_id);
- return 0;
- } else {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): ioctl->data NULL.\n");
- return 1;
- }
- case TW_CMD_PACKET_WITH_DATA:
- dprintk(KERN_WARNING "3w-xxxx: tw_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n");
- command_save = (TW_Command *)tw_dev->alignment_virtual_address[request_id];
- if (command_save == NULL) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): Bad alignment virtual address.\n", tw_dev->host->host_no);
- return 1;
- }
- if (ioctl->data != NULL) {
- /* Copy down the command packet */
- memcpy(command_packet, ioctl->data, sizeof(TW_Command));
- memcpy(command_save, ioctl->data, sizeof(TW_Command));
- command_packet->request_id = request_id;
-
- /* Now deal with the two possible sglists */
- if (command_packet->byte0.sgl_offset == 2) {
- use_sg = command_packet->size - 3;
- for (i=0;i<use_sg;i++)
- total_bytes+=command_packet->byte8.param.sgl[i].length;
- tw_dev->ioctl_data[request_id] = pci_alloc_consistent(tw_dev->tw_pci_dev, total_bytes, &dma_handle);
-
- if (!tw_dev->ioctl_data[request_id]) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): pci_alloc_consistent() failed for request_id %d.\n", tw_dev->host->host_no, request_id);
- return 1;
- }
-
- /* Copy param sglist into the kernel */
- data_ptr = tw_dev->ioctl_data[request_id];
- for (i=0;i<use_sg;i++) {
- if (command_packet->byte8.param.sgl[i].address != 0) {
- error = copy_from_user(data_ptr, (void *)(unsigned long)command_packet->byte8.param.sgl[i].address, command_packet->byte8.param.sgl[i].length);
- if (error) {
- dprintk(KERN_WARNING "3w-xxxx: scsi%d: Error copying param sglist from userspace.\n", tw_dev->host->host_no);
- goto tw_ioctl_bail;
- }
- } else {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): Bad param sgl address.\n", tw_dev->host->host_no);
- tw_dev->srb[request_id]->result = (DID_RESET << 16);
- goto tw_ioctl_bail;
- }
- data_ptr+=command_packet->byte8.param.sgl[i].length;
- }
- command_packet->size = 4;
- command_packet->byte8.param.sgl[0].address = dma_handle;
- command_packet->byte8.param.sgl[0].length = total_bytes;
- }
- if (command_packet->byte0.sgl_offset == 3) {
- use_sg = command_packet->size - 4;
- for (i=0;i<use_sg;i++)
- total_bytes+=command_packet->byte8.io.sgl[i].length;
- tw_dev->ioctl_data[request_id] = pci_alloc_consistent(tw_dev->tw_pci_dev, total_bytes, &dma_handle);
-
- if (!tw_dev->ioctl_data[request_id]) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): pci_alloc_consistent() failed for request_id %d.\n", tw_dev->host->host_no, request_id);
- return 1;
- }
- if (command_packet->byte0.opcode == TW_OP_WRITE) {
- /* Copy io sglist into the kernel */
- data_ptr = tw_dev->ioctl_data[request_id];
- for (i=0;i<use_sg;i++) {
- if (command_packet->byte8.io.sgl[i].address != 0) {
- error = copy_from_user(data_ptr, (void *)(unsigned long)command_packet->byte8.io.sgl[i].address, command_packet->byte8.io.sgl[i].length);
- if (error) {
- dprintk(KERN_WARNING "3w-xxxx: scsi%d: Error copying io sglist from userspace.\n", tw_dev->host->host_no);
- goto tw_ioctl_bail;
- }
- } else {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): Bad io sgl address.\n", tw_dev->host->host_no);
- tw_dev->srb[request_id]->result = (DID_RESET << 16);
- goto tw_ioctl_bail;
- }
- data_ptr+=command_packet->byte8.io.sgl[i].length;
- }
- }
- command_packet->size = 5;
- command_packet->byte8.io.sgl[0].address = dma_handle;
- command_packet->byte8.io.sgl[0].length = total_bytes;
- }
-
- spin_unlock(&tw_dev->tw_lock);
- spin_unlock_irq(tw_dev->host->host_lock);
-
- set_bit(TW_IN_IOCTL, &tw_dev->flags);
-
- /* Finally post the command packet */
- tw_post_command_packet(tw_dev, request_id);
- posted = 1;
- do_gettimeofday(&before);
-
- tw_ioctl_retry:
- mdelay(TW_IOCTL_WAIT_TIME);
- if (test_bit(TW_IN_IOCTL, &tw_dev->flags)) {
- do_gettimeofday(&timeout);
- if (before.tv_sec + TW_IOCTL_TIMEOUT < timeout.tv_sec) {
- spin_lock_irq(tw_dev->host->host_lock);
- spin_lock(&tw_dev->tw_lock);
- goto tw_ioctl_bail;
- } else {
- goto tw_ioctl_retry;
- }
- }
-
- spin_lock_irq(tw_dev->host->host_lock);
- spin_lock(&tw_dev->tw_lock);
-
- if (signal_pending(current)) {
- dprintk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): Signal pending, aborting ioctl().\n", tw_dev->host->host_no);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- goto tw_ioctl_bail;
- }
-
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- /* Now copy up the param or io sglist to userspace */
- if (command_packet->byte0.sgl_offset == 2) {
- use_sg = command_save->size - 3;
- data_ptr = tw_dev->ioctl_data[request_id];
- for (i=0;i<use_sg;i++) {
- if (command_save->byte8.param.sgl[i].address != 0) {
- error = copy_to_user((void *)(unsigned long)command_save->byte8.param.sgl[i].address, data_ptr, command_save->byte8.param.sgl[i].length);
- if (error) {
- dprintk(KERN_WARNING "3w-xxxx: scsi%d: Error copying param sglist to userspace.\n", tw_dev->host->host_no);
- goto tw_ioctl_bail;
- }
- dprintk(KERN_WARNING "3w-xxxx: scsi%d: Copied %ld bytes to pid %d.\n", tw_dev->host->host_no, command_save->byte8.param.sgl[i].length, current->pid);
- data_ptr+=command_save->byte8.param.sgl[i].length;
- } else {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): Bad param sgl address.\n", tw_dev->host->host_no);
- tw_dev->srb[request_id]->result = (DID_RESET << 16);
- goto tw_ioctl_bail;
- }
- }
- }
- if (command_packet->byte0.sgl_offset == 3) {
- use_sg = command_save->size - 4;
- if (command_packet->byte0.opcode == TW_OP_READ) {
- data_ptr = tw_dev->ioctl_data[request_id];
- for(i=0;i<use_sg;i++) {
- if (command_save->byte8.io.sgl[i].address != 0) {
- error = copy_to_user((void *)(unsigned long)command_save->byte8.io.sgl[i].address, data_ptr, command_save->byte8.io.sgl[i].length);
- if (error) {
- dprintk(KERN_WARNING "3w-xxxx: scsi%d: Error copying io sglist to userspace.\n", tw_dev->host->host_no);
- goto tw_ioctl_bail;
- }
- dprintk(KERN_WARNING "3w-xxxx: scsi%d: Copied %ld bytes to pid %d.\n", tw_dev->host->host_no, command_save->byte8.io.sgl[i].length, current->pid);
- data_ptr+=command_save->byte8.io.sgl[i].length;
- } else {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): Bad io sgl address.\n", tw_dev->host->host_no);
- tw_dev->srb[request_id]->result = (DID_RESET << 16);
- goto tw_ioctl_bail;
- }
- }
- }
- }
-
- tw_ioctl_bail:
-
- /* Free up sglist memory */
- if (tw_dev->ioctl_data[request_id])
- pci_free_consistent(tw_dev->tw_pci_dev, total_bytes, tw_dev->ioctl_data[request_id], dma_handle);
- else
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl(): Error freeing ioctl data.\n", tw_dev->host->host_no);
-
- /* Now complete the io */
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- if (posted)
- tw_dev->posted_request_count--;
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- return 0;
- } else {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): ioctl->data NULL.\n");
- return 1;
- }
- default:
- dprintk(KERN_WARNING "3w-xxxx: Unknown ioctl 0x%x.\n", opcode);
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- return 0;
- }
-
- param_value = tw_dev->alignment_physical_address[request_id];
- if (param_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): Bad alignment physical address.\n");
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- }
-
- command_packet->byte8.param.sgl[0].address = param_value;
- command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
-
- command_packet->byte0.sgl_offset = 2;
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.parameter_count = 1;
+ param->table_id = TW_UNIT_INFORMATION_TABLE_BASE +
+ tw_dev->srb[request_id]->device->id;
+ param->parameter_id = 4; /* unitcapacity parameter */
+ param->parameter_size_bytes = 4;
+ param_value = tw_dev->alignment_physical_address[request_id];
+ if (param_value == 0) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n");
+ return 1;
+ }
+
+ command_packet->byte8.param.sgl[0].address = param_value;
+ command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
+ if (command_que_value == 0) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n");
+ return 1;
+ }
/* Now try to post the command to the board */
tw_post_command_packet(tw_dev, request_id);
-
+
return 0;
-} /* End tw_ioctl() */
+} /* End tw_scsiop_read_capacity() */
-/* This function is called by the isr to complete ioctl requests */
-int tw_ioctl_complete(TW_Device_Extension *tw_dev, int request_id)
+/* This function is called by the isr to complete a readcapacity command */
+static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id)
{
unsigned char *param_data;
- unsigned char *buff;
+ u32 capacity;
+ char *buff;
TW_Param *param;
- TW_Ioctl *ioctl = NULL;
- TW_Passthru *passthru = NULL;
- TW_Command *command_packet;
- ioctl = (TW_Ioctl *)tw_dev->srb[request_id]->request_buffer;
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl_complete()\n");
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n");
+
buff = tw_dev->srb[request_id]->request_buffer;
if (buff == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl_complete(): Request buffer NULL.\n");
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Request buffer NULL.\n");
return 1;
}
-
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- if (command_packet == NULL) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: tw_ioctl_complete(): Bad command packet virtual address.\n", tw_dev->host->host_no);
+ memset(buff, 0, tw_dev->srb[request_id]->request_bufflen);
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
+ if (param == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n");
return 1;
}
+ param_data = &(param->data[0]);
- dprintk(KERN_NOTICE "3w-xxxx: tw_ioctl_complete(): Request_bufflen = %d\n", tw_dev->srb[request_id]->request_bufflen);
+ capacity = (param_data[3] << 24) | (param_data[2] << 16) |
+ (param_data[1] << 8) | param_data[0];
- ioctl = (TW_Ioctl *)buff;
- switch (ioctl->opcode) {
- case TW_ATA_PASSTHRU:
- passthru = (TW_Passthru *)ioctl->data;
- /* Don't return data for non-data ATA cmds */
- if ((passthru->param != 0) && (passthru->param != 0x8))
- memcpy(buff, tw_dev->alignment_virtual_address[request_id], passthru->sector_count * 512);
- else {
- /* For non-data cmds, return cmd pkt */
- if (tw_dev->srb[request_id]->request_bufflen >= sizeof(TW_Command))
- memcpy(buff, tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command));
- }
- break;
- case TW_CMD_PACKET_WITH_DATA:
- dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_complete(): caught TW_CMD_PACKET_WITH_DATA.\n");
- clear_bit(TW_IN_IOCTL, &tw_dev->flags);
- return TW_ISR_DONT_COMPLETE; /* Special case for isr to not complete io */
- default:
- memset(buff, 0, tw_dev->srb[request_id]->request_bufflen);
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- if (param == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl_complete(): Bad alignment virtual address.\n");
- return 1;
- }
- param_data = &(param->data[0]);
- memcpy(buff, param_data, tw_dev->ioctl_size[request_id]);
- }
- return 0;
-} /* End tw_ioctl_complete() */
+ /* Subtract one sector to fix get last sector ioctl */
+ capacity -= 1;
-static int tw_map_scsi_sg_data(struct pci_dev *pdev, Scsi_Cmnd *cmd)
-{
- int use_sg;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity);
- dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n");
-
- if (cmd->use_sg == 0)
- return 0;
+ /* Number of LBA's */
+ buff[0] = (capacity >> 24);
+ buff[1] = (capacity >> 16) & 0xff;
+ buff[2] = (capacity >> 8) & 0xff;
+ buff[3] = capacity & 0xff;
- use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
-
- if (use_sg == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n");
- return 0;
- }
+ /* Block size in bytes (512) */
+ buff[4] = (TW_BLOCK_SIZE >> 24);
+ buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff;
+ buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff;
+ buff[7] = TW_BLOCK_SIZE & 0xff;
- cmd->SCp.phase = 2;
- cmd->SCp.have_data_in = use_sg;
-
- return use_sg;
-} /* End tw_map_scsi_sg_data() */
+ return 0;
+} /* End tw_scsiop_read_capacity_complete() */
-static u32 tw_map_scsi_single_data(struct pci_dev *pdev, Scsi_Cmnd *cmd)
+/* This function handles scsi read or write commands */
+static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id)
{
- dma_addr_t mapping;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
-
- dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data()\n");
+ TW_Command *command_packet;
+ unsigned long command_que_value;
+ u32 lba = 0x0, num_sectors = 0x0, buffaddr = 0x0;
+ int i, use_sg;
+ struct scsi_cmnd *srb;
+ struct scatterlist *sglist;
- if (cmd->request_bufflen == 0)
- return 0;
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n");
- mapping = pci_map_page(pdev, virt_to_page(cmd->request_buffer), offset_in_page(cmd->request_buffer), cmd->request_bufflen, dma_dir);
+ if (tw_dev->srb[request_id]->request_buffer == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n");
+ return 1;
+ }
+ sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
+ srb = tw_dev->srb[request_id];
- if (mapping == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data(): pci_map_page() failed.\n");
- return 0;
+ /* Initialize command packet */
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ if (command_packet == NULL) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n");
+ return 1;
}
- cmd->SCp.phase = 1;
- cmd->SCp.have_data_in = mapping;
+ if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) {
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ);
+ } else {
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE);
+ }
- return mapping;
-} /* End tw_map_scsi_single_data() */
+ command_packet->size = 3;
+ command_packet->request_id = request_id;
+ command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id);
+ command_packet->status = 0;
+ command_packet->flags = 0;
-/* This function will mask the command interrupt */
-void tw_mask_command_interrupt(TW_Device_Extension *tw_dev)
-{
- u32 control_reg_addr, control_reg_value;
-
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = TW_CONTROL_MASK_COMMAND_INTERRUPT;
- outl(control_reg_value, control_reg_addr);
-} /* End tw_mask_command_interrupt() */
+ if (srb->cmnd[0] == WRITE_10) {
+ if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10))
+ command_packet->flags = 1;
+ }
-/* This function will poll the status register for a flag */
-int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds)
-{
- u32 status_reg_addr, status_reg_value;
- struct timeval before, timeout;
+ if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) {
+ lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3];
+ num_sectors = (u32)srb->cmnd[4];
+ } else {
+ lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5];
+ num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8);
+ }
+
+ /* Update sector statistic */
+ tw_dev->sector_count = num_sectors;
+ if (tw_dev->sector_count > tw_dev->max_sector_count)
+ tw_dev->max_sector_count = tw_dev->sector_count;
+
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors);
+ command_packet->byte8.io.lba = lba;
+ command_packet->byte6.block_count = num_sectors;
- status_reg_addr = tw_dev->registers.status_reg_addr;
- do_gettimeofday(&before);
- status_reg_value = inl(status_reg_addr);
+ /* Do this if there are no sg list entries */
+ if (tw_dev->srb[request_id]->use_sg == 0) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): SG = 0\n");
+ buffaddr = tw_map_scsi_single_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
+ if (buffaddr == 0)
+ return 1;
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_poll_status(): Unexpected bits.\n");
- tw_decode_bits(tw_dev, status_reg_value, 0);
+ command_packet->byte8.io.sgl[0].address = buffaddr;
+ command_packet->byte8.io.sgl[0].length = tw_dev->srb[request_id]->request_bufflen;
+ command_packet->size+=2;
}
-
- while ((status_reg_value & flag) != flag) {
- status_reg_value = inl(status_reg_addr);
-
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_poll_status(): Unexpected bits.\n");
- tw_decode_bits(tw_dev, status_reg_value, 0);
- }
- do_gettimeofday(&timeout);
- if (before.tv_sec + seconds < timeout.tv_sec) {
- dprintk(KERN_WARNING "3w-xxxx: tw_poll_status(): Flag 0x%x not found.\n", flag);
+ /* Do this if we have multiple sg list entries */
+ if (tw_dev->srb[request_id]->use_sg > 0) {
+ use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
+ if (use_sg == 0)
return 1;
+
+ for (i=0;i<use_sg; i++) {
+ command_packet->byte8.io.sgl[i].address = sg_dma_address(&sglist[i]);
+ command_packet->byte8.io.sgl[i].length = sg_dma_len(&sglist[i]);
+ command_packet->size+=2;
}
- mdelay(5);
}
- return 0;
-} /* End tw_poll_status() */
-
-/* This function will poll the status register for disappearance of a flag */
-int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds)
-{
- u32 status_reg_addr, status_reg_value;
- struct timeval before, timeout;
- status_reg_addr = tw_dev->registers.status_reg_addr;
- do_gettimeofday(&before);
- status_reg_value = inl(status_reg_addr);
+ /* Update SG statistics */
+ tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg;
+ if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
+ tw_dev->max_sgl_entries = tw_dev->sgl_entries;
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_poll_status_gone(): Unexpected bits.\n");
- tw_decode_bits(tw_dev, status_reg_value, 0);
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
+ if (command_que_value == 0) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n");
+ return 1;
}
+
+ /* Now try to post the command to the board */
+ tw_post_command_packet(tw_dev, request_id);
- while ((status_reg_value & flag) != 0) {
- status_reg_value = inl(status_reg_addr);
-
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_poll_status_gone(): Unexpected bits.\n");
- tw_decode_bits(tw_dev, status_reg_value, 0);
- }
-
- do_gettimeofday(&timeout);
- if (before.tv_sec + seconds < timeout.tv_sec) {
- dprintk(KERN_WARNING "3w-xxxx: tw_poll_status_gone(): Flag 0x%x never disappeared.\n", flag);
- return 1;
- }
- mdelay(5);
- }
return 0;
-} /* End tw_poll_status_gone() */
+} /* End tw_scsiop_read_write() */
-/* This function will attempt to post a command packet to the board */
-int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id)
+/* This function will handle the request sense scsi command */
+static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id)
{
- u32 status_reg_addr, status_reg_value;
- unsigned long command_que_value;
- u32 command_que_addr;
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n");
- dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n");
- command_que_addr = tw_dev->registers.command_que_addr;
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- status_reg_addr = tw_dev->registers.status_reg_addr;
- status_reg_value = inl(status_reg_addr);
+ /* For now we just zero the request buffer */
+ memset(tw_dev->srb[request_id]->request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n");
- tw_decode_bits(tw_dev, status_reg_value, 1);
- }
+ /* If we got a request_sense, we probably want a reset, return error */
+ tw_dev->srb[request_id]->result = (DID_ERROR << 16);
+ tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) {
- /* We successfully posted the command packet */
- outl(command_que_value, command_que_addr);
- tw_dev->state[request_id] = TW_S_POSTED;
- tw_dev->posted_request_count++;
- if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) {
- tw_dev->max_posted_request_count = tw_dev->posted_request_count;
- }
- } else {
- /* Couldn't post the command packet, so we do it in the isr */
- if (tw_dev->state[request_id] != TW_S_PENDING) {
- tw_dev->state[request_id] = TW_S_PENDING;
- tw_dev->pending_request_count++;
- if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) {
- tw_dev->max_pending_request_count = tw_dev->pending_request_count;
- }
- tw_dev->pending_queue[tw_dev->pending_tail] = request_id;
- if (tw_dev->pending_tail == TW_Q_LENGTH-1) {
- tw_dev->pending_tail = TW_Q_START;
- } else {
- tw_dev->pending_tail = tw_dev->pending_tail + 1;
- }
- }
- tw_unmask_command_interrupt(tw_dev);
- return 1;
- }
return 0;
-} /* End tw_post_command_packet() */
+} /* End tw_scsiop_request_sense() */
-/* This function will reset a device extension */
-int tw_reset_device_extension(TW_Device_Extension *tw_dev)
+/* This function will handle synchronize cache scsi command */
+static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id)
{
- int imax = 0;
- int i = 0;
- Scsi_Cmnd *srb;
+ TW_Command *command_packet;
+ unsigned long command_que_value;
- dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n");
- imax = TW_Q_LENGTH;
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n");
- if (tw_reset_sequence(tw_dev)) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no);
+ /* Send firmware flush command for this unit */
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ if (command_packet == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n");
return 1;
}
- /* Abort all requests that are in progress */
- for (i=0;i<imax;i++) {
- if ((tw_dev->state[i] != TW_S_FINISHED) &&
- (tw_dev->state[i] != TW_S_INITIAL) &&
- (tw_dev->state[i] != TW_S_COMPLETED)) {
- srb = tw_dev->srb[i];
- if (srb != NULL) {
- srb->result = (DID_RESET << 16);
- tw_dev->srb[i]->scsi_done(tw_dev->srb[i]);
- tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[i]);
- }
- }
+ /* Setup the command packet */
+ memset(command_packet, 0, sizeof(TW_Sector));
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE);
+ command_packet->size = 2;
+ command_packet->request_id = request_id;
+ command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id);
+ command_packet->status = 0;
+ command_packet->flags = 0;
+ command_packet->byte6.parameter_count = 1;
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
+ if (command_que_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n");
+ return 1;
}
- /* Reset queues and counts */
- for (i=0;i<imax;i++) {
- tw_dev->free_queue[i] = i;
- tw_dev->state[i] = TW_S_INITIAL;
- }
- tw_dev->free_head = TW_Q_START;
- tw_dev->free_tail = TW_Q_START;
- tw_dev->posted_request_count = 0;
- tw_dev->pending_request_count = 0;
- tw_dev->pending_head = TW_Q_START;
- tw_dev->pending_tail = TW_Q_START;
- tw_dev->reset_print = 0;
- tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
+ /* Now try to post the command packet */
+ tw_post_command_packet(tw_dev, request_id);
return 0;
-} /* End tw_reset_device_extension() */
+} /* End tw_scsiop_synchronize_cache() */
-/* This function will reset a controller */
-int tw_reset_sequence(TW_Device_Extension *tw_dev)
+/* This function will handle test unit ready scsi command */
+static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id)
{
- int error = 0;
- int tries = 0;
-
- /* Disable interrupts */
- tw_disable_interrupts(tw_dev);
-
- /* Reset the board */
- while (tries < TW_MAX_RESET_TRIES) {
- tw_soft_reset(tw_dev);
-
- error = tw_aen_drain_queue(tw_dev);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no);
- tries++;
- continue;
- }
+ TW_Param *param;
+ TW_Command *command_packet;
+ unsigned long command_que_value;
+ unsigned long param_value;
- /* Check for controller errors */
- if (tw_check_errors(tw_dev)) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no);
- tries++;
- continue;
- }
+ dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n");
- /* Now the controller is in a good state */
- break;
+ /* Initialize command packet */
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ if (command_packet == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n");
+ return 1;
}
+ memset(command_packet, 0, sizeof(TW_Sector));
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
+ command_packet->size = 4;
+ command_packet->request_id = request_id;
+ command_packet->status = 0;
+ command_packet->flags = 0;
+ command_packet->byte6.parameter_count = 1;
- if (tries >= TW_MAX_RESET_TRIES) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no);
+ /* Now setup the param */
+ if (tw_dev->alignment_virtual_address[request_id] == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n");
return 1;
}
-
- error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no);
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
+ memset(param, 0, sizeof(TW_Sector));
+ param->table_id = 3; /* unit summary table */
+ param->parameter_id = 3; /* unitsstatus parameter */
+ param->parameter_size_bytes = TW_MAX_UNITS;
+ param_value = tw_dev->alignment_physical_address[request_id];
+ if (param_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n");
return 1;
}
- /* Re-enable interrupts */
- tw_enable_and_clear_interrupts(tw_dev);
-
- return 0;
-} /* End tw_reset_sequence() */
-
-/* This funciton returns unit geometry in cylinders/heads/sectors */
-int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev,
- sector_t capacity, int geom[])
-{
- int heads, sectors, cylinders;
- TW_Device_Extension *tw_dev;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n");
- tw_dev = (TW_Device_Extension *)sdev->host->hostdata;
-
- heads = 64;
- sectors = 32;
- cylinders = (unsigned long)capacity / (heads * sectors);
-
- if (capacity >= 0x200000) {
- heads = 255;
- sectors = 63;
- cylinders = (unsigned long)capacity / (heads * sectors);
+ command_packet->byte8.param.sgl[0].address = param_value;
+ command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
+ command_que_value = tw_dev->command_packet_physical_address[request_id];
+ if (command_que_value == 0) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n");
+ return 1;
}
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders);
- geom[0] = heads;
- geom[1] = sectors;
- geom[2] = cylinders;
+ /* Now try to post the command packet */
+ tw_post_command_packet(tw_dev, request_id);
return 0;
-} /* End tw_scsi_biosparam() */
-
-/* This function will find and initialize any cards */
-int tw_scsi_detect(Scsi_Host_Template *tw_host)
-{
- int ret;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_detect()\n");
-
- printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", tw_driver_version);
-
- ret = tw_findcards(tw_host);
-
- return ret;
-} /* End tw_scsi_detect() */
+} /* End tw_scsiop_test_unit_ready() */
-/* This is the new scsi eh abort function */
-int tw_scsi_eh_abort(Scsi_Cmnd *SCpnt)
+/* This function is called by the isr to complete a testunitready command */
+static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id)
{
- TW_Device_Extension *tw_dev=NULL;
- int i = 0;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_eh_abort()\n");
+ unsigned char *is_unit_present;
+ TW_Param *param;
- if (!SCpnt) {
- printk(KERN_WARNING "3w-xxxx: tw_scsi_eh_abort(): Invalid Scsi_Cmnd.\n");
- return (FAILED);
- }
+ dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n");
- tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
- if (tw_dev == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsi_eh_abort(): Invalid device extension.\n");
- return (FAILED);
+ param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
+ if (param == NULL) {
+ printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n");
+ return 1;
}
+ is_unit_present = &(param->data[0]);
- spin_lock(&tw_dev->tw_lock);
- tw_dev->num_aborts++;
-
- /* If the command hasn't been posted yet, we can do the abort */
- for (i=0;i<TW_Q_LENGTH;i++) {
- if (tw_dev->srb[i] == SCpnt) {
- if (tw_dev->state[i] == TW_S_STARTED) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Unit #%d: Command (%p) timed out.\n", tw_dev->host->host_no, tw_dev->srb[i]==0 ? 0 : tw_dev->srb[i]->device->id, SCpnt);
- tw_dev->state[i] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, i);
- spin_unlock(&tw_dev->tw_lock);
- return (SUCCESS);
- }
- if (tw_dev->state[i] == TW_S_PENDING) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Unit #%d: Command (%p) timed out.\n", tw_dev->host->host_no, tw_dev->srb[i]==0 ? 0 : tw_dev->srb[i]->device->id, SCpnt);
- if (tw_dev->pending_head == TW_Q_LENGTH-1) {
- tw_dev->pending_head = TW_Q_START;
- } else {
- tw_dev->pending_head = tw_dev->pending_head + 1;
- }
- tw_dev->pending_request_count--;
- tw_dev->state[i] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, i);
- spin_unlock(&tw_dev->tw_lock);
- return (SUCCESS);
- }
- if (tw_dev->state[i] == TW_S_POSTED) {
- /* If the command has already been posted, we have to reset the card */
- printk(KERN_WARNING "3w-xxxx: scsi%d: Unit #%d: Command (%p) timed out, resetting card.\n", tw_dev->host->host_no, tw_dev->srb[i]==0 ? 0 : tw_dev->srb[i]->device->id, SCpnt);
- /* We have to let AEN requests through before the reset */
- spin_unlock(&tw_dev->tw_lock);
- spin_unlock_irq(tw_dev->host->host_lock);
- mdelay(TW_AEN_WAIT_TIME);
- spin_lock_irq(tw_dev->host->host_lock);
- spin_lock(&tw_dev->tw_lock);
-
- if (tw_reset_device_extension(tw_dev)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_scsi_eh_abort(): Reset failed for card %d.\n", tw_dev->host->host_no);
- spin_unlock(&tw_dev->tw_lock);
- return (FAILED);
- }
- }
- }
+ if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) {
+ tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1;
+ } else {
+ tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0;
+ tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16);
+ return TW_ISR_DONT_RESULT;
}
- spin_unlock(&tw_dev->tw_lock);
- return (SUCCESS);
-} /* End tw_scsi_eh_abort() */
+ return 0;
+} /* End tw_scsiop_test_unit_ready_complete() */
-/* This is the new scsi eh reset function */
-int tw_scsi_eh_reset(Scsi_Cmnd *SCpnt)
+/* This is the main scsi queue function to handle scsi opcodes */
+static int tw_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
{
- TW_Device_Extension *tw_dev=NULL;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_eh_reset()\n");
-
- if (!SCpnt) {
- printk(KERN_WARNING "3w-xxxx: tw_scsi_eh_reset(): Invalid Scsi_Cmnd.\n");
- return (FAILED);
- }
+ unsigned char *command = SCpnt->cmnd;
+ int request_id = 0;
+ int retval = 1;
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
- tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
- if (tw_dev == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsi_eh_reset(): Invalid device extension.\n");
- return (FAILED);
- }
+ /* Save done function into Scsi_Cmnd struct */
+ SCpnt->scsi_done = done;
+
+ /* Queue the command and get a request id */
+ tw_state_request_start(tw_dev, &request_id);
- /* We have to let AEN requests through before the reset */
- spin_unlock_irq(tw_dev->host->host_lock);
- mdelay(TW_AEN_WAIT_TIME);
- spin_lock_irq(tw_dev->host->host_lock);
+ /* Save the scsi command for use by the ISR */
+ tw_dev->srb[request_id] = SCpnt;
- spin_lock(&tw_dev->tw_lock);
- tw_dev->num_resets++;
-
- /* Now reset the card and some of the device extension data */
- if (tw_reset_device_extension(tw_dev)) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no);
- spin_unlock(&tw_dev->tw_lock);
- return (FAILED);
- }
- printk(KERN_WARNING "3w-xxxx: scsi%d: Reset succeeded.\n", tw_dev->host->host_no);
- spin_unlock(&tw_dev->tw_lock);
-
- return (SUCCESS);
-} /* End tw_scsi_eh_reset() */
-
-/* This function handles input and output from /proc/scsi/3w-xxxx/x */
-int tw_scsi_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
- off_t offset, int length, int inout)
-{
- TW_Device_Extension *tw_dev = NULL;
- TW_Info info;
- int i;
- int j;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_proc_info()\n");
-
- /* Find the correct device extension */
- for (i=0;i<tw_device_extension_count;i++)
- if (tw_device_extension_list[i]->host->host_no == shost->host_no)
- tw_dev = tw_device_extension_list[i];
- if (tw_dev == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsi_proc_info(): Couldn't locate device extension.\n");
- return (-EINVAL);
- }
-
- info.buffer = buffer;
- info.length = length;
- info.offset = offset;
- info.position = 0;
-
- if (inout) {
- /* Write */
- if (strncmp(buffer, "debug", 5) == 0) {
- printk(KERN_INFO "3w-xxxx: Posted commands:\n");
- for (j=0;j<TW_Q_LENGTH;j++) {
- if (tw_dev->state[j] == TW_S_POSTED) {
- TW_Command *command = (TW_Command *)tw_dev->command_packet_virtual_address[j];
- printk(KERN_INFO "3w-xxxx: Request_id: %d\n", j);
- printk(KERN_INFO "Opcode: 0x%x\n", command->byte0.opcode);
- printk(KERN_INFO "Block_count: 0x%x\n", command->byte6.block_count);
- printk(KERN_INFO "LBA: 0x%x\n", command->byte8.io.lba);
- printk(KERN_INFO "Physical command packet addr: 0x%lx\n", tw_dev->command_packet_physical_address[j]);
- printk(KERN_INFO "Scsi_Cmnd: %p\n", tw_dev->srb[j]);
- }
- }
- printk(KERN_INFO "3w-xxxx: Free_head: %3d\n", tw_dev->free_head);
- printk(KERN_INFO "3w-xxxx: Free_tail: %3d\n", tw_dev->free_tail);
- }
- return length;
- } else {
- /* Read */
- if (start) {
- *start = buffer;
- }
- tw_copy_info(&info, "scsi%d: 3ware Storage Controller\n", shost->host_no);
- tw_copy_info(&info, "Driver version: %s\n", tw_driver_version);
- tw_copy_info(&info, "Current commands posted: %3d\n", tw_dev->posted_request_count);
- tw_copy_info(&info, "Max commands posted: %3d\n", tw_dev->max_posted_request_count);
- tw_copy_info(&info, "Current pending commands: %3d\n", tw_dev->pending_request_count);
- tw_copy_info(&info, "Max pending commands: %3d\n", tw_dev->max_pending_request_count);
- tw_copy_info(&info, "Last sgl length: %3d\n", tw_dev->sgl_entries);
- tw_copy_info(&info, "Max sgl length: %3d\n", tw_dev->max_sgl_entries);
- tw_copy_info(&info, "Last sector count: %3d\n", tw_dev->sector_count);
- tw_copy_info(&info, "Max sector count: %3d\n", tw_dev->max_sector_count);
- tw_copy_info(&info, "Resets: %3d\n", tw_dev->num_resets);
- tw_copy_info(&info, "Aborts: %3d\n", tw_dev->num_aborts);
- tw_copy_info(&info, "AEN's: %3d\n", tw_dev->aen_count);
- }
- if (info.position > info.offset) {
- return (info.position - info.offset);
- } else {
- return 0;
- }
-} /* End tw_scsi_proc_info() */
-
-/* This is the main scsi queue function to handle scsi opcodes */
-int tw_scsi_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
-{
- unsigned char *command = SCpnt->cmnd;
- int request_id = 0;
- int error = 0;
- TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
-
- if (tw_dev == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsi_queue(): Invalid device extension.\n");
- SCpnt->result = (DID_ERROR << 16);
- done(SCpnt);
- return 0;
- }
-
- spin_lock(&tw_dev->tw_lock);
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue()\n");
-
- /* Skip scsi command if it isn't for us */
- if ((SCpnt->device->channel != 0) || (SCpnt->device->lun != 0)) {
- SCpnt->result = (DID_BAD_TARGET << 16);
- done(SCpnt);
- spin_unlock(&tw_dev->tw_lock);
- return 0;
- }
-
- /* Save done function into Scsi_Cmnd struct */
- SCpnt->scsi_done = done;
-
- /* Queue the command and get a request id */
- tw_state_request_start(tw_dev, &request_id);
-
- /* Save the scsi command for use by the ISR */
- tw_dev->srb[request_id] = SCpnt;
-
- /* Initialize phase to zero */
- SCpnt->SCp.phase = 0;
+ /* Initialize phase to zero */
+ SCpnt->SCp.phase = TW_PHASE_INITIAL;
switch (*command) {
case READ_10:
case WRITE_10:
case WRITE_6:
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n");
- error = tw_scsiop_read_write(tw_dev, request_id);
+ retval = tw_scsiop_read_write(tw_dev, request_id);
break;
case TEST_UNIT_READY:
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n");
- error = tw_scsiop_test_unit_ready(tw_dev, request_id);
+ retval = tw_scsiop_test_unit_ready(tw_dev, request_id);
break;
case INQUIRY:
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n");
- error = tw_scsiop_inquiry(tw_dev, request_id);
+ retval = tw_scsiop_inquiry(tw_dev, request_id);
break;
case READ_CAPACITY:
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n");
- error = tw_scsiop_read_capacity(tw_dev, request_id);
+ retval = tw_scsiop_read_capacity(tw_dev, request_id);
break;
case REQUEST_SENSE:
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n");
- error = tw_scsiop_request_sense(tw_dev, request_id);
+ retval = tw_scsiop_request_sense(tw_dev, request_id);
break;
case MODE_SENSE:
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n");
- error = tw_scsiop_mode_sense(tw_dev, request_id);
+ retval = tw_scsiop_mode_sense(tw_dev, request_id);
break;
case SYNCHRONIZE_CACHE:
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n");
- error = tw_scsiop_synchronize_cache(tw_dev, request_id);
+ retval = tw_scsiop_synchronize_cache(tw_dev, request_id);
break;
case TW_IOCTL:
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TW_SCSI_IOCTL.\n");
- error = tw_ioctl(tw_dev, request_id);
+ printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n");
break;
default:
printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command);
tw_state_request_finish(tw_dev, request_id);
SCpnt->result = (DID_BAD_TARGET << 16);
done(SCpnt);
+ goto out;
}
- if (error) {
+ if (retval) {
tw_dev->state[request_id] = TW_S_COMPLETED;
tw_state_request_finish(tw_dev, request_id);
SCpnt->result = (DID_ERROR << 16);
done(SCpnt);
+ retval = 0;
}
- spin_unlock(&tw_dev->tw_lock);
-
- return 0;
+out:
+ return retval;
} /* End tw_scsi_queue() */
-/* This function will release the resources on an rmmod call */
-int tw_scsi_release(struct Scsi_Host *tw_host)
-{
- TW_Device_Extension *tw_dev;
- tw_dev = (TW_Device_Extension *)tw_host->hostdata;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_release()\n");
-
- /* Fake like we just shut down, so notify the card that
- * we "shut down cleanly".
- */
- tw_halt(NULL, 0, NULL); // parameters aren't actually used
-
- /* Free up the IO region */
- release_region((tw_dev->tw_pci_dev->resource[0].start), TW_IO_ADDRESS_RANGE);
-
- /* Free up the IRQ */
- free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
-
- /* Unregister character device */
- if (twe_major >= 0) {
- unregister_chrdev(twe_major, "twe");
- twe_major = -1;
- }
-
- /* Free up device extension resources */
- tw_free_device_extension(tw_dev);
-
- /* Tell kernel scsi-layer we are gone */
- scsi_unregister(tw_host);
-
- return 0;
-} /* End tw_scsi_release() */
-
-/* This function handles scsi inquiry commands */
-int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id)
+/* This function is the interrupt service routine */
+static irqreturn_t tw_interrupt(int irq, void *dev_instance,
+ struct pt_regs *regs)
{
- TW_Param *param;
+ int request_id;
+ u32 status_reg_value;
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
+ TW_Response_Queue response_que;
+ int error = 0, retval = 0;
TW_Command *command_packet;
- unsigned long command_que_value;
- u32 command_que_addr;
- unsigned long param_value;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n");
-
- /* Initialize command packet */
- command_que_addr = tw_dev->registers.command_que_addr;
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- if (command_packet == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n");
- return 1;
- }
- memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte0.sgl_offset = 2;
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = 0;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.parameter_count = 1;
-
- /* Now setup the param */
- if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n");
- return 1;
- }
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- memset(param, 0, sizeof(TW_Sector));
- param->table_id = 3; /* unit summary table */
- param->parameter_id = 3; /* unitsstatus parameter */
- param->parameter_size_bytes = TW_MAX_UNITS;
- param_value = tw_dev->alignment_physical_address[request_id];
- if (param_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n");
- return 1;
- }
+ int handled = 0;
- command_packet->byte8.param.sgl[0].address = param_value;
- command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n");
- return 1;
- }
+ /* Get the host lock for io completions */
+ spin_lock(tw_dev->host->host_lock);
- /* Now try to post the command packet */
- tw_post_command_packet(tw_dev, request_id);
+ /* See if the interrupt matches this instance */
+ if (tw_dev->tw_pci_dev->irq == (unsigned int)irq) {
- return 0;
-} /* End tw_scsiop_inquiry() */
+ handled = 1;
-/* This function is called by the isr to complete an inquiry command */
-int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id)
-{
- unsigned char *is_unit_present;
- unsigned char *request_buffer;
- TW_Param *param;
+ /* Read the registers */
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n");
+ /* Check if this is our interrupt, otherwise bail */
+ if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT))
+ goto tw_interrupt_bail;
- /* Fill request buffer */
- if (tw_dev->srb[request_id]->request_buffer == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Request buffer NULL.\n");
- return 1;
- }
- request_buffer = tw_dev->srb[request_id]->request_buffer;
- memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
- request_buffer[0] = TYPE_DISK; /* Peripheral device type */
- request_buffer[1] = 0; /* Device type modifier */
- request_buffer[2] = 0; /* No ansi/iso compliance */
- request_buffer[4] = 31; /* Additional length */
- memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */
- sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id);
- memcpy(&request_buffer[32], tw_driver_version, 3);
+ /* Check controller for errors */
+ if (tw_check_bits(status_reg_value)) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
+ if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
+ TW_CLEAR_ALL_INTERRUPTS(tw_dev);
+ goto tw_interrupt_bail;
+ }
+ }
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- if (param == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n");
- return 1;
- }
- is_unit_present = &(param->data[0]);
+ /* Handle host interrupt */
+ if (status_reg_value & TW_STATUS_HOST_INTERRUPT) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n");
+ TW_CLEAR_HOST_INTERRUPT(tw_dev);
+ }
- if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) {
- tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = TRUE;
- } else {
- tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = FALSE;
- tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16);
- return TW_ISR_DONT_RESULT;
- }
+ /* Handle attention interrupt */
+ if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n");
+ TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
+ tw_state_request_start(tw_dev, &request_id);
+ error = tw_aen_read_queue(tw_dev, request_id);
+ if (error) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no);
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
+ }
+ }
- return 0;
-} /* End tw_scsiop_inquiry_complete() */
+ /* Handle command interrupt */
+ if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) {
+ /* Drain as many pending commands as we can */
+ while (tw_dev->pending_request_count > 0) {
+ request_id = tw_dev->pending_queue[tw_dev->pending_head];
+ if (tw_dev->state[request_id] != TW_S_PENDING) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no);
+ break;
+ }
+ if (tw_post_command_packet(tw_dev, request_id)==0) {
+ if (tw_dev->pending_head == TW_Q_LENGTH-1) {
+ tw_dev->pending_head = TW_Q_START;
+ } else {
+ tw_dev->pending_head = tw_dev->pending_head + 1;
+ }
+ tw_dev->pending_request_count--;
+ } else {
+ /* If we get here, we will continue re-posting on the next command interrupt */
+ break;
+ }
+ }
+ /* If there are no more pending requests, we mask command interrupt */
+ if (tw_dev->pending_request_count == 0)
+ TW_MASK_COMMAND_INTERRUPT(tw_dev);
+ }
-/* This function handles scsi mode_sense commands */
-int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id)
-{
- TW_Param *param;
- TW_Command *command_packet;
- unsigned long command_que_value;
- unsigned long param_value;
+ /* Handle response interrupt */
+ if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) {
+ /* Drain the response queue from the board */
+ while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
+ /* Read response queue register */
+ response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+ request_id = TW_RESID_OUT(response_que.response_id);
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ error = 0;
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n");
+ /* Check for bad response */
+ if (command_packet->status != 0) {
+ /* If internal command, don't error, don't fill sense */
+ if (tw_dev->srb[request_id] == NULL) {
+ tw_decode_sense(tw_dev, request_id, 0);
+ } else {
+ error = tw_decode_sense(tw_dev, request_id, 1);
+ }
+ }
- /* Only page control = 0, page code = 0x8 (cache page) supported */
- if (tw_dev->srb[request_id]->cmnd[2] != 0x8) {
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- return 0;
- }
+ /* Check for correct state */
+ if (tw_dev->state[request_id] != TW_S_POSTED) {
+ if (tw_dev->srb[request_id] != NULL) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no);
+ error = 1;
+ }
+ }
- /* Now read firmware cache setting for this unit */
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- if (command_packet == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n");
- return 1;
- }
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id);
- /* Setup the command packet */
- memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte0.sgl_offset = 2;
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = 0;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.parameter_count = 1;
-
- /* Setup the param */
- if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n");
- return 1;
- }
-
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- memset(param, 0, sizeof(TW_Sector));
- param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id;
- param->parameter_id = 7; /* unit flags */
- param->parameter_size_bytes = 1;
- param_value = tw_dev->alignment_physical_address[request_id];
- if (param_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n");
- return 1;
- }
-
- command_packet->byte8.param.sgl[0].address = param_value;
- command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n");
- return 1;
- }
-
- /* Now try to post the command packet */
- tw_post_command_packet(tw_dev, request_id);
-
- return 0;
-} /* End tw_scsiop_mode_sense() */
-
-/* This function is called by the isr to complete a mode sense command */
-int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id)
-{
- TW_Param *param;
- unsigned char *flags;
- unsigned char *request_buffer;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n");
-
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- if (param == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n");
- return 1;
- }
- flags = (char *)&(param->data[0]);
- request_buffer = tw_dev->srb[request_id]->buffer;
- memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
-
- request_buffer[0] = 0xf; /* mode data length */
- request_buffer[1] = 0; /* default medium type */
- request_buffer[2] = 0x10; /* dpo/fua support on */
- request_buffer[3] = 0; /* no block descriptors */
- request_buffer[4] = 0x8; /* caching page */
- request_buffer[5] = 0xa; /* page length */
- if (*flags & 0x1)
- request_buffer[6] = 0x4; /* WCE on */
- else
- request_buffer[6] = 0x0; /* WCE off */
-
- return 0;
-} /* End tw_scsiop_mode_sense_complete() */
-
-/* This function handles scsi read_capacity commands */
-int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id)
-{
- TW_Param *param;
- TW_Command *command_packet;
- unsigned long command_que_value;
- u32 command_que_addr;
- unsigned long param_value;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n");
-
- /* Initialize command packet */
- command_que_addr = tw_dev->registers.command_que_addr;
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
-
- if (command_packet == NULL) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n");
- return 1;
- }
- memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte0.sgl_offset = 2;
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = tw_dev->srb[request_id]->device->id;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.block_count = 1;
-
- /* Now setup the param */
- if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n");
- return 1;
- }
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- memset(param, 0, sizeof(TW_Sector));
- param->table_id = TW_UNIT_INFORMATION_TABLE_BASE +
- tw_dev->srb[request_id]->device->id;
- param->parameter_id = 4; /* unitcapacity parameter */
- param->parameter_size_bytes = 4;
- param_value = tw_dev->alignment_physical_address[request_id];
- if (param_value == 0) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n");
- return 1;
- }
-
- command_packet->byte8.param.sgl[0].address = param_value;
- command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n");
- return 1;
- }
-
- /* Now try to post the command to the board */
- tw_post_command_packet(tw_dev, request_id);
-
- return 0;
-} /* End tw_scsiop_read_capacity() */
-
-/* This function is called by the isr to complete a readcapacity command */
-int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id)
-{
- unsigned char *param_data;
- u32 capacity;
- char *buff;
- TW_Param *param;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n");
-
- buff = tw_dev->srb[request_id]->request_buffer;
- if (buff == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Request buffer NULL.\n");
- return 1;
- }
- memset(buff, 0, tw_dev->srb[request_id]->request_bufflen);
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- if (param == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n");
- return 1;
- }
- param_data = &(param->data[0]);
-
- capacity = (param_data[3] << 24) | (param_data[2] << 16) |
- (param_data[1] << 8) | param_data[0];
-
- /* Subtract one sector to fix get last sector ioctl */
- capacity -= 1;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity);
-
- /* Number of LBA's */
- buff[0] = (capacity >> 24);
- buff[1] = (capacity >> 16) & 0xff;
- buff[2] = (capacity >> 8) & 0xff;
- buff[3] = capacity & 0xff;
-
- /* Block size in bytes (512) */
- buff[4] = (TW_BLOCK_SIZE >> 24);
- buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff;
- buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff;
- buff[7] = TW_BLOCK_SIZE & 0xff;
-
- return 0;
-} /* End tw_scsiop_read_capacity_complete() */
-
-/* This function handles scsi read or write commands */
-int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id)
-{
- TW_Command *command_packet;
- unsigned long command_que_value;
- u32 command_que_addr = 0x0;
- u32 lba = 0x0, num_sectors = 0x0, buffaddr = 0x0;
- int i, use_sg;
- Scsi_Cmnd *srb;
- struct scatterlist *sglist;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n");
-
- if (tw_dev->srb[request_id]->request_buffer == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n");
- return 1;
- }
- sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
- srb = tw_dev->srb[request_id];
-
- /* Initialize command packet */
- command_que_addr = tw_dev->registers.command_que_addr;
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- if (command_packet == NULL) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n");
- return 1;
- }
-
- if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) {
- command_packet->byte0.opcode = TW_OP_READ;
- } else {
- command_packet->byte0.opcode = TW_OP_WRITE;
- }
-
- command_packet->byte0.sgl_offset = 3;
- command_packet->size = 3;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = srb->device->id;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
-
- if (srb->cmnd[0] == WRITE_10) {
- if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10))
- command_packet->flags = 1;
- }
-
- if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) {
- lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3];
- num_sectors = (u32)srb->cmnd[4];
- } else {
- lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5];
- num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8);
- }
-
- /* Update sector statistic */
- tw_dev->sector_count = num_sectors;
- if (tw_dev->sector_count > tw_dev->max_sector_count)
- tw_dev->max_sector_count = tw_dev->sector_count;
-
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors);
- command_packet->byte8.io.lba = lba;
- command_packet->byte6.block_count = num_sectors;
-
- /* Do this if there are no sg list entries */
- if (tw_dev->srb[request_id]->use_sg == 0) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): SG = 0\n");
- buffaddr = tw_map_scsi_single_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
- if (buffaddr == 0)
- return 1;
-
- command_packet->byte8.io.sgl[0].address = buffaddr;
- command_packet->byte8.io.sgl[0].length = tw_dev->srb[request_id]->request_bufflen;
- command_packet->size+=2;
- }
-
- /* Do this if we have multiple sg list entries */
- if (tw_dev->srb[request_id]->use_sg > 0) {
- use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
- if (use_sg == 0)
- return 1;
-
- for (i=0;i<use_sg; i++) {
- command_packet->byte8.io.sgl[i].address = sg_dma_address(&sglist[i]);
- command_packet->byte8.io.sgl[i].length = sg_dma_len(&sglist[i]);
- command_packet->size+=2;
- }
- }
-
- /* Update SG statistics */
- tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg;
- if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
- tw_dev->max_sgl_entries = tw_dev->sgl_entries;
-
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n");
- return 1;
- }
-
- /* Now try to post the command to the board */
- tw_post_command_packet(tw_dev, request_id);
-
- return 0;
-} /* End tw_scsiop_read_write() */
-
-/* This function will handle the request sense scsi command */
-int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id)
-{
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n");
-
- /* For now we just zero the request buffer */
- memset(tw_dev->srb[request_id]->request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
-
- /* If we got a request_sense, we probably want a reset, return error */
- tw_dev->srb[request_id]->result = (DID_ERROR << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
-
- return 0;
-} /* End tw_scsiop_request_sense() */
+ /* Check for internal command completion */
+ if (tw_dev->srb[request_id] == NULL) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n");
+ /* Check for chrdev ioctl completion */
+ if (request_id != tw_dev->chrdev_request_id) {
+ retval = tw_aen_complete(tw_dev, request_id);
+ if (retval) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no);
+ }
+ } else {
+ tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
+ wake_up(&tw_dev->ioctl_wqueue);
+ }
+ } else {
+ switch (tw_dev->srb[request_id]->cmnd[0]) {
+ case READ_10:
+ case READ_6:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n");
+ break;
+ case WRITE_10:
+ case WRITE_6:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n");
+ break;
+ case TEST_UNIT_READY:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n");
+ error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id);
+ break;
+ case INQUIRY:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n");
+ error = tw_scsiop_inquiry_complete(tw_dev, request_id);
+ break;
+ case READ_CAPACITY:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n");
+ error = tw_scsiop_read_capacity_complete(tw_dev, request_id);
+ break;
+ case MODE_SENSE:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n");
+ error = tw_scsiop_mode_sense_complete(tw_dev, request_id);
+ break;
+ case SYNCHRONIZE_CACHE:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n");
+ break;
+ default:
+ printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n");
+ error = 1;
+ }
-/* This function will handle synchronize cache scsi command */
-int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id)
-{
- TW_Command *command_packet;
- unsigned long command_que_value;
+ /* If no error command was a success */
+ if (error == 0) {
+ tw_dev->srb[request_id]->result = (DID_OK << 16);
+ }
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n");
+ /* If error, command failed */
+ if (error == 1) {
+ /* Ask for a host reset */
+ tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
+ }
- /* Send firmware flush command for this unit */
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- if (command_packet == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n");
- return 1;
- }
+ /* Now complete the io */
+ if ((error != TW_ISR_DONT_COMPLETE)) {
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
+ tw_dev->posted_request_count--;
+ tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
- /* Setup the command packet */
- memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_FLUSH_CACHE;
- command_packet->byte0.sgl_offset = 0;
- command_packet->size = 2;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = tw_dev->srb[request_id]->device->id;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.parameter_count = 1;
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n");
- return 1;
+ tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
+ }
+ }
+
+ /* Check for valid status after each drain */
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+ if (tw_check_bits(status_reg_value)) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
+ if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
+ TW_CLEAR_ALL_INTERRUPTS(tw_dev);
+ goto tw_interrupt_bail;
+ }
+ }
+ }
+ }
}
+tw_interrupt_bail:
+ spin_unlock(tw_dev->host->host_lock);
+ return IRQ_RETVAL(handled);
+} /* End tw_interrupt() */
- /* Now try to post the command packet */
- tw_post_command_packet(tw_dev, request_id);
-
- return 0;
-} /* End tw_scsiop_synchronize_cache() */
-
-/* This function will handle test unit ready scsi command */
-int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id)
+/* This function tells the controller to shut down */
+static void __tw_shutdown(TW_Device_Extension *tw_dev)
{
- TW_Param *param;
- TW_Command *command_packet;
- unsigned long command_que_value;
- u32 command_que_addr;
- unsigned long param_value;
+ /* Disable interrupts */
+ TW_DISABLE_INTERRUPTS(tw_dev);
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n");
+ printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n", tw_dev->host->host_no);
- /* Initialize command packet */
- command_que_addr = tw_dev->registers.command_que_addr;
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- if (command_packet == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n");
- return 1;
+ /* Tell the card we are shutting down */
+ if (tw_initconnection(tw_dev, 1)) {
+ printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n");
+ } else {
+ printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n");
}
- memset(command_packet, 0, sizeof(TW_Sector));
- command_packet->byte0.opcode = TW_OP_GET_PARAM;
- command_packet->byte0.sgl_offset = 2;
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte3.unit = 0;
- command_packet->byte3.host_id = 0;
- command_packet->status = 0;
- command_packet->flags = 0;
- command_packet->byte6.parameter_count = 1;
- /* Now setup the param */
- if (tw_dev->alignment_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n");
- return 1;
- }
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- memset(param, 0, sizeof(TW_Sector));
- param->table_id = 3; /* unit summary table */
- param->parameter_id = 3; /* unitsstatus parameter */
- param->parameter_size_bytes = TW_MAX_UNITS;
- param_value = tw_dev->alignment_physical_address[request_id];
- if (param_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n");
- return 1;
- }
+ /* Clear all interrupts just before exit */
+ TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
+} /* End __tw_shutdown() */
- command_packet->byte8.param.sgl[0].address = param_value;
- command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n");
- return 1;
- }
+/* Wrapper for __tw_shutdown */
+static void tw_shutdown(struct device *dev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
- /* Now try to post the command packet */
- tw_post_command_packet(tw_dev, request_id);
+ __tw_shutdown(tw_dev);
+} /* End tw_shutdown() */
- return 0;
-} /* End tw_scsiop_test_unit_ready() */
+static struct scsi_host_template driver_template = {
+ .module = THIS_MODULE,
+ .name = "3ware Storage Controller",
+ .queuecommand = tw_scsi_queue,
+ .eh_host_reset_handler = tw_scsi_eh_reset,
+ .bios_param = tw_scsi_biosparam,
+ .can_queue = TW_Q_LENGTH-2,
+ .this_id = -1,
+ .sg_tablesize = TW_MAX_SGL_LENGTH,
+ .max_sectors = TW_MAX_SECTORS,
+ .cmd_per_lun = TW_MAX_CMDS_PER_LUN,
+ .use_clustering = ENABLE_CLUSTERING,
+ .shost_attrs = tw_host_attrs,
+ .sdev_attrs = tw_dev_attrs,
+ .emulated = 1
+};
-/* This function is called by the isr to complete a testunitready command */
-int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id)
+/* This function will probe and initialize a card */
+static int __devinit tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
{
- unsigned char *is_unit_present;
- TW_Param *param;
+ struct Scsi_Host *host = NULL;
+ TW_Device_Extension *tw_dev;
+ int retval = -ENODEV;
- dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n");
+ retval = pci_enable_device(pdev);
+ if (retval) {
+ printk(KERN_WARNING "3w-xxxx: Failed to enable pci device.");
+ goto out_disable_device;
+ }
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
- if (param == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n");
- return 1;
+ pci_set_master(pdev);
+
+ retval = pci_set_dma_mask(pdev, TW_DMA_MASK);
+ if (retval) {
+ printk(KERN_WARNING "3w-xxxx: Failed to set dma mask.");
+ goto out_disable_device;
}
- is_unit_present = &(param->data[0]);
- if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) {
- tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = TRUE;
- } else {
- tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = FALSE;
- tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16);
- return TW_ISR_DONT_RESULT;
+ host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
+ if (!host) {
+ printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension.");
+ retval = -ENOMEM;
+ goto out_disable_device;
}
+ tw_dev = (TW_Device_Extension *)host->hostdata;
- return 0;
-} /* End tw_scsiop_test_unit_ready_complete() */
+ memset(tw_dev, 0, sizeof(TW_Device_Extension));
-/* Set a value in the features table */
-int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size,
- unsigned char *val)
-{
- TW_Param *param;
- TW_Command *command_packet;
- TW_Response_Queue response_queue;
- int request_id = 0;
- unsigned long command_que_value;
- u32 command_que_addr;
- u32 response_que_addr;
- unsigned long param_value;
+ /* Save values to device extension */
+ tw_dev->host = host;
+ tw_dev->tw_pci_dev = pdev;
- /* Initialize SetParam command packet */
- if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n");
- return 1;
+ if (tw_initialize_device_extension(tw_dev)) {
+ printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension.");
+ goto out_free_device_extension;
}
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- memset(command_packet, 0, sizeof(TW_Sector));
- param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
-
- command_packet->byte0.opcode = TW_OP_SET_PARAM;
- command_packet->byte0.sgl_offset = 2;
- param->table_id = 0x404; /* Features table */
- param->parameter_id = parm;
- param->parameter_size_bytes = param_size;
- memcpy(param->data, val, param_size);
- param_value = tw_dev->alignment_physical_address[request_id];
- if (param_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_ioctl(): Bad alignment physical address.\n");
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
+ /* Request IO regions */
+ retval = pci_request_regions(pdev, "3w-xxxx");
+ if (retval) {
+ printk(KERN_WARNING "3w-xxxx: Failed to get mem region.");
+ goto out_free_device_extension;
}
- command_packet->byte8.param.sgl[0].address = param_value;
- command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
-
- command_packet->size = 4;
- command_packet->request_id = request_id;
- command_packet->byte6.parameter_count = 1;
- command_que_value = tw_dev->command_packet_physical_address[request_id];
- if (command_que_value == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n");
- return 1;
+ /* Save base address */
+ tw_dev->base_addr = pci_resource_start(pdev, 0);
+ if (!tw_dev->base_addr) {
+ printk(KERN_WARNING "3w-xxxx: Failed to get io address.");
+ goto out_release_mem_region;
}
- command_que_addr = tw_dev->registers.command_que_addr;
- response_que_addr = tw_dev->registers.response_que_addr;
-
- /* Send command packet to the board */
- outl(command_que_value, command_que_addr);
- /* Poll for completion */
- if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
- response_queue.value = inl(response_que_addr);
- request_id = (unsigned char)response_queue.u.response_id;
- if (request_id != 0) {
- /* unexpected request id */
- printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n");
- return 1;
- }
- if (command_packet->status != 0) {
- /* bad response */
- tw_decode_sense(tw_dev, request_id, 0);
- return 1;
- }
- }
+ /* Disable interrupts on the card */
+ TW_DISABLE_INTERRUPTS(tw_dev);
- return 0;
-} /* End tw_setfeature() */
+ /* Initialize the card */
+ if (tw_reset_sequence(tw_dev))
+ goto out_release_mem_region;
-/* This function will setup the interrupt handler */
-int tw_setup_irq(TW_Device_Extension *tw_dev)
-{
- char *device = TW_DEVICE_NAME;
- int error;
+ /* Set host specific parameters */
+ host->max_id = TW_MAX_UNITS;
+ host->max_cmd_len = TW_MAX_CDB_LEN;
- dprintk(KERN_NOTICE "3w-xxxx: tw_setup_irq()\n");
- error = request_irq(tw_dev->tw_pci_dev->irq, tw_interrupt, SA_SHIRQ, device, tw_dev);
+ /* Luns and channels aren't supported by adapter */
+ host->max_lun = 0;
+ host->max_channel = 0;
- if (error < 0) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Error requesting IRQ: %d.\n", tw_dev->host->host_no, tw_dev->tw_pci_dev->irq);
- return 1;
+ /* Register the card with the kernel SCSI layer */
+ retval = scsi_add_host(host, &pdev->dev);
+ if (retval) {
+ printk(KERN_WARNING "3w-xxxx: scsi add host failed");
+ goto out_release_mem_region;
}
- return 0;
-} /* End tw_setup_irq() */
-/* This function will tell the controller we're shutting down by sending
- initconnection with a 1 */
-int tw_shutdown_device(TW_Device_Extension *tw_dev)
-{
- int error;
+ pci_set_drvdata(pdev, host);
- /* Disable interrupts */
- tw_disable_interrupts(tw_dev);
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Found a 3ware Storage Controller at 0x%x, IRQ: %d.\n", host->host_no, tw_dev->base_addr, pdev->irq);
- /* poke the board */
- error = tw_initconnection(tw_dev, 1);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Connection shutdown failed.\n", tw_dev->host->host_no);
- } else {
- printk(KERN_NOTICE "3w-xxxx: Shutdown complete.\n");
+ /* Now setup the interrupt handler */
+ retval = request_irq(pdev->irq, tw_interrupt, SA_SHIRQ, "3w-xxxx", tw_dev);
+ if (retval) {
+ printk(KERN_WARNING "3w-xxxx: Error requesting IRQ.");
+ goto out_remove_host;
}
- /* Re-enable interrupts */
- tw_enable_and_clear_interrupts(tw_dev);
-
- return 0;
-} /* End tw_shutdown_device() */
+ tw_device_extension_list[tw_device_extension_count] = tw_dev;
+ tw_device_extension_count++;
-/* This function will configure individual target parameters */
-int tw_slave_configure(Scsi_Device *SDptr)
-{
- int max_cmds;
+ /* Re-enable interrupts on the card */
+ TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
- dprintk(KERN_WARNING "3w-xxxx: tw_slave_configure()\n");
+ /* Finally, scan the host */
+ scsi_scan_host(host);
- if (cmds_per_lun) {
- max_cmds = cmds_per_lun;
- if (max_cmds > TW_MAX_CMDS_PER_LUN)
- max_cmds = TW_MAX_CMDS_PER_LUN;
- } else {
- max_cmds = TW_MAX_CMDS_PER_LUN;
+ if (twe_major == -1) {
+ if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0)
+ printk(KERN_WARNING "3w-xxxx: Failed to register character device.");
}
- scsi_adjust_queue_depth(SDptr, MSG_ORDERED_TAG, max_cmds);
-
return 0;
-} /* End tw_slave_configure() */
-/* This function will soft reset the controller */
-void tw_soft_reset(TW_Device_Extension *tw_dev)
-{
- u32 control_reg_addr, control_reg_value;
-
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = ( TW_CONTROL_ISSUE_SOFT_RESET |
- TW_CONTROL_CLEAR_HOST_INTERRUPT |
- TW_CONTROL_CLEAR_ATTENTION_INTERRUPT |
- TW_CONTROL_MASK_COMMAND_INTERRUPT |
- TW_CONTROL_MASK_RESPONSE_INTERRUPT |
- TW_CONTROL_CLEAR_ERROR_STATUS |
- TW_CONTROL_DISABLE_INTERRUPTS);
- outl(control_reg_value, control_reg_addr);
-} /* End tw_soft_reset() */
+out_remove_host:
+ scsi_remove_host(host);
+out_release_mem_region:
+ pci_release_regions(pdev);
+out_free_device_extension:
+ tw_free_device_extension(tw_dev);
+ scsi_host_put(host);
+out_disable_device:
+ pci_disable_device(pdev);
-/* This function will free a request_id */
-int tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id)
+ return retval;
+} /* End tw_probe() */
+
+/* This function is called to remove a device */
+static void tw_remove(struct pci_dev *pdev)
{
- dprintk(KERN_NOTICE "3w-xxxx: tw_state_request_finish()\n");
-
- tw_dev->free_queue[tw_dev->free_tail] = request_id;
- tw_dev->state[request_id] = TW_S_FINISHED;
- if (tw_dev->free_tail == tw_dev->free_wrap)
- tw_dev->free_tail = TW_Q_START;
- else
- tw_dev->free_tail++;
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
- dprintk(KERN_NOTICE "3w-xxxx: tw_state_request_finish(): Freeing request_id %d\n", request_id);
+ scsi_remove_host(tw_dev->host);
- return 0;
-} /* End tw_state_request_finish() */
+ __tw_shutdown(tw_dev);
-/* This function will assign an available request_id */
-int tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id)
-{
- int id = 0;
+ /* Free up the IRQ */
+ free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
- dprintk(KERN_NOTICE "3w-xxxx: tw_state_request_start()\n");
-
- /* Obtain next free request_id */
- id = tw_dev->free_queue[tw_dev->free_head];
- if (tw_dev->free_head == tw_dev->free_wrap)
- tw_dev->free_head = TW_Q_START;
- else
- tw_dev->free_head++;
+ /* Free up the mem region */
+ pci_release_regions(pdev);
- *request_id = id;
- tw_dev->state[id] = TW_S_STARTED;
+ /* Free up device extension resources */
+ tw_free_device_extension(tw_dev);
- dprintk(KERN_NOTICE "3w-xxxx: tw_state_request_start(): id = %d.\n", id);
- return 0;
-} /* End tw_state_request_start() */
+ /* Unregister character device */
+ if (twe_major >= 0) {
+ unregister_chrdev(twe_major, "twe");
+ twe_major = -1;
+ }
-static void tw_unmap_scsi_data(struct pci_dev *pdev, Scsi_Cmnd *cmd)
-{
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
+ scsi_host_put(tw_dev->host);
+ pci_disable_device(pdev);
+ tw_device_extension_count--;
+} /* End tw_remove() */
- dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n");
+/* PCI Devices supported by this driver */
+static struct pci_device_id tw_pci_tbl[] __devinitdata = {
+ { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ { }
+};
+MODULE_DEVICE_TABLE(pci, tw_pci_tbl);
- switch(cmd->SCp.phase) {
- case 1:
- pci_unmap_page(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, dma_dir);
- break;
- case 2:
- pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, dma_dir);
- break;
+/* pci_driver initializer */
+static struct pci_driver tw_driver = {
+ .name = "3w-xxxx",
+ .id_table = tw_pci_tbl,
+ .probe = tw_probe,
+ .remove = tw_remove,
+ .driver = {
+ .shutdown = tw_shutdown
}
-} /* End tw_unmap_scsi_data() */
+};
-/* This function will unmask the command interrupt on the controller */
-void tw_unmask_command_interrupt(TW_Device_Extension *tw_dev)
+/* This function is called on driver initialization */
+static int __init tw_init(void)
{
- u32 control_reg_addr, control_reg_value;
+ printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION);
- control_reg_addr = tw_dev->registers.control_reg_addr;
- control_reg_value = TW_CONTROL_UNMASK_COMMAND_INTERRUPT;
- outl(control_reg_value, control_reg_addr);
-} /* End tw_unmask_command_interrupt() */
+ return pci_module_init(&tw_driver);
+} /* End tw_init() */
-static Scsi_Host_Template driver_template = {
- .proc_name = "3w-xxxx",
- .proc_info = tw_scsi_proc_info,
- .name = "3ware Storage Controller",
- .detect = tw_scsi_detect,
- .release = tw_scsi_release,
- .queuecommand = tw_scsi_queue,
- .eh_abort_handler = tw_scsi_eh_abort,
- .eh_host_reset_handler = tw_scsi_eh_reset,
- .bios_param = tw_scsi_biosparam,
- .slave_configure = tw_slave_configure,
- .can_queue = TW_Q_LENGTH-2,
- .this_id = -1,
- .sg_tablesize = TW_MAX_SGL_LENGTH,
- .max_sectors = TW_MAX_SECTORS,
- .cmd_per_lun = TW_MAX_CMDS_PER_LUN,
- .use_clustering = ENABLE_CLUSTERING,
- .emulated = 1
-};
-#include "scsi_module.c"
+/* This function is called on driver exit */
+static void __exit tw_exit(void)
+{
+ pci_unregister_driver(&tw_driver);
+} /* End tw_exit() */
+
+module_init(tw_init);
+module_exit(tw_exit);
git://git.onelab.eu / linux-2.6.git / blobdiff