From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Adam Radford" Subject: [PATCH 1/3] 3ware 5/6/7/8000 driver v1.26.02.000 Date: Thu, 9 Sep 2004 14:02:23 -0700 Sender: linux-scsi-owner@vger.kernel.org Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: Received: from hadar.amcc.com ([192.195.69.168]:52416 "EHLO hadar.amcc.com") by vger.kernel.org with ESMTP id S266836AbUIIVDA convert rfc822-to-8bit (ORCPT ); Thu, 9 Sep 2004 17:03:00 -0400 Received: from mailhost02.amcc.com ([192.195.69.49]) by hadar.amcc.com (Netscape Messaging Server 4.15) with SMTP id I3SL5203.OKL for ; Thu, 9 Sep 2004 14:03:02 -0700 Received: (from ving-pc [10.66.6.122]) by mailhost02.amcc.com (SMSSMTP 4.0.0.59) with SMTP id M2004090914035120562 for ; Thu, 09 Sep 2004 14:03:51 -0700 List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Here is a large driver update for the 3ware 5/6/7/8000 series controllers for 2.6.9-rc1-bk16. Changes in this release are the following: - Remove deprecated SCSI_IOCTL_SEND_COMMAND interface. - Remove deprecated /proc/scsi/3w-xxxx interface. - Convert entire driver to pci_driver format. - Remove all mdelays, replace w/msleep to fix possible watchdog timer issues. - Make all register accesses macros. - Remove all prototypes from header file, reorder functions to eliminate all prototypes but one. - Add sysfs 'queue_depth' setting attribute. - Add sysfs 'stats' attribute. - Fix spinlocks everywhere, remove tw_lock spinlock. - Remove all bitfields, add bitmask access macros. - Remove un-needed scsi_eh_abort entrypoint. Controller does not support aborting invididual IO's, scsi_eh_reset sufficient. The patch is rather lengthy due to the function reordering. -- Adam Radford Staff Software Engineer AMCC diff -Naur linux-2.6.9-rc1-bk15/drivers/scsi/3w-xxxx.c linux-2.6.9-rc1-bk16/drivers/scsi/3w-xxxx.c --- linux-2.6.9-rc1-bk15/drivers/scsi/3w-xxxx.c 2004-08-14 03:56:22.000000000 -0700 +++ linux-2.6.9-rc1-bk16/drivers/scsi/3w-xxxx.c 2004-09-08 17:41:45.000000000 -0700 @@ -184,327 +184,385 @@ 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 - -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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include #include #include #include #include - -#include +#include +#include +#include +#include +#include #include #include #include - -#define __3W_C /* let 3w-xxxx.h know it is use */ - -#include "scsi.h" +#include #include - +#include +#include #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; +static const char *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"); + +/* 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 */ +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; + + if (tw_check_bits(status_reg_value)) + tw_decode_bits(tw_dev, status_reg_value, 0); - command_que_addr = tw_dev->registers.command_que_addr; - response_que_addr = tw_dev->registers.response_que_addr; + while ((status_reg_value & flag) != flag) { + status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); - 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; + 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); @@ -516,12 +574,9 @@ } 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; @@ -553,7 +608,7 @@ dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n"); tw_dev->srb[request_id] = 0; /* 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; @@ -562,85 +617,276 @@ 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;icommand_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; + /* 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;icommand_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 error, 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; @@ -713,7 +959,7 @@ 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); @@ -726,7 +972,7 @@ 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; @@ -745,13 +991,20 @@ /* 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)) { @@ -762,14 +1015,14 @@ 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; } @@ -777,11 +1030,11 @@ 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; @@ -814,522 +1067,139 @@ 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() */ - -/* This function will clear all interrupts on the controller */ -void tw_clear_all_interrupts(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_STATUS_VALID_INTERRUPT; - outl(control_reg_value, control_reg_addr); -} /* End tw_clear_all_interrupts() */ +/* 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 the attention interrupt */ -void tw_clear_attention_interrupt(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; - - 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() */ - -/* This function will clear the host interrupt */ -void tw_clear_host_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_HOST_INTERRUPT; - outl(control_reg_value, control_reg_addr); -} /* End tw_clear_host_interrupt() */ - -/* 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() */ + dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n"); -/* 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; + /* 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 (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 (len > 0) { - memcpy(info->buffer + info->position, data, len); - info->position += len; - } -} /* End tw_copy_mem_info() */ + 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 print readable messages from status register errors */ -int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host) +/* This function will send an initconnection command to controller */ +static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) { - 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_dev->registers.control_reg_addr); - } + unsigned long command_que_value; + TW_Command *command_packet; + TW_Response_Queue response_queue; + int request_id = 0; - 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); - } + dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n"); - 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); + /* 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; } - 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 = (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 (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; - } + if (command_que_value == 0) { + printk(KERN_WARNING "3w-xxxx: tw_initconnection(): 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]; - - /* 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 */ - } - } - } - - /* 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() */ - -/* This function will find and initialize all cards */ -int tw_findcards(Scsi_Host_Template *tw_host) -{ - 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; - 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;itw_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); - - /* Free the temporary device extension */ - if (tw_dev) - kfree(tw_dev); - } - } + /* 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 (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); + if (request_id != 0) { + /* unexpected request id */ + printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n"); + return 1; } - } - - 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;ionline == 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; + if (command_packet->status != 0) { + /* bad response */ + tw_decode_sense(tw_dev, request_id, 0); + return 1; } } - unregister_reboot_notifier(&tw_notifier); - - return NOTIFY_OK; -} /* End tw_halt() */ + return 0; +} /* End tw_initconnection() */ -/* This function will send an initconnection command to controller */ -int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) +/* Set a value in the features table */ +static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size, + unsigned char *val) { - unsigned long command_que_value; - u32 command_que_addr; - u32 response_que_addr; + 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; - 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 */ + /* Initialize SetParam 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"); + 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)); - command_packet->byte0.opcode = TW_OP_INIT_CONNECTION; - command_packet->byte0.sgl_offset = 0x0; - command_packet->size = TW_INIT_COMMAND_PACKET_SIZE; + param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; + + 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); + + 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); + + command_packet->size = 4; 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]; + 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_initconnection(): Bad command packet physical address.\n"); - return 1; + printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n"); + return 1; } - + /* Send command packet to the board */ - outl(command_que_value, command_que_addr); - + 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(response_que_addr); - request_id = (unsigned char)response_queue.u.response_id; + 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"); + printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n"); return 1; } if (command_packet->status != 0) { @@ -1338,11 +1208,60 @@ return 1; } } + return 0; -} /* End tw_initconnection() */ +} /* End tw_setfeature() */ + +/* This function will reset a controller */ +static int tw_reset_sequence(TW_Device_Extension *tw_dev) +{ + int error = 0; + int tries = 0; + unsigned char c = 1; + + /* 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; + } + + /* 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; + } + + /* Now the controller is in a good state */ + break; + } + + 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; + } + + 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; + } + + 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_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;