| /* |
| * ipr.c -- driver for IBM Power Linux RAID adapters |
| * |
| * Written By: Brian King <brking@us.ibm.com>, IBM Corporation |
| * |
| * Copyright (C) 2003, 2004 IBM Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| /* |
| * Notes: |
| * |
| * This driver is used to control the following SCSI adapters: |
| * |
| * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B |
| * |
| * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter |
| * PCI-X Dual Channel Ultra 320 SCSI Adapter |
| * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card |
| * Embedded SCSI adapter on p615 and p655 systems |
| * |
| * Supported Hardware Features: |
| * - Ultra 320 SCSI controller |
| * - PCI-X host interface |
| * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine |
| * - Non-Volatile Write Cache |
| * - Supports attachment of non-RAID disks, tape, and optical devices |
| * - RAID Levels 0, 5, 10 |
| * - Hot spare |
| * - Background Parity Checking |
| * - Background Data Scrubbing |
| * - Ability to increase the capacity of an existing RAID 5 disk array |
| * by adding disks |
| * |
| * Driver Features: |
| * - Tagged command queuing |
| * - Adapter microcode download |
| * - PCI hot plug |
| * - SCSI device hot plug |
| * |
| */ |
| |
| #include <linux/config.h> |
| #include <linux/fs.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/errno.h> |
| #include <linux/kernel.h> |
| #include <linux/ioport.h> |
| #include <linux/delay.h> |
| #include <linux/pci.h> |
| #include <linux/wait.h> |
| #include <linux/spinlock.h> |
| #include <linux/sched.h> |
| #include <linux/interrupt.h> |
| #include <linux/blkdev.h> |
| #include <linux/firmware.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/processor.h> |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_tcq.h> |
| #include <scsi/scsi_eh.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_request.h> |
| #include "ipr.h" |
| |
| /* |
| * Global Data |
| */ |
| static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head); |
| static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; |
| static unsigned int ipr_max_speed = 1; |
| static int ipr_testmode = 0; |
| static unsigned int ipr_fastfail = 0; |
| static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT; |
| static unsigned int ipr_enable_cache = 1; |
| static unsigned int ipr_debug = 0; |
| static int ipr_auto_create = 1; |
| static DEFINE_SPINLOCK(ipr_driver_lock); |
| |
| /* This table describes the differences between DMA controller chips */ |
| static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { |
| { /* Gemstone, Citrine, and Obsidian */ |
| .mailbox = 0x0042C, |
| .cache_line_size = 0x20, |
| { |
| .set_interrupt_mask_reg = 0x0022C, |
| .clr_interrupt_mask_reg = 0x00230, |
| .sense_interrupt_mask_reg = 0x0022C, |
| .clr_interrupt_reg = 0x00228, |
| .sense_interrupt_reg = 0x00224, |
| .ioarrin_reg = 0x00404, |
| .sense_uproc_interrupt_reg = 0x00214, |
| .set_uproc_interrupt_reg = 0x00214, |
| .clr_uproc_interrupt_reg = 0x00218 |
| } |
| }, |
| { /* Snipe and Scamp */ |
| .mailbox = 0x0052C, |
| .cache_line_size = 0x20, |
| { |
| .set_interrupt_mask_reg = 0x00288, |
| .clr_interrupt_mask_reg = 0x0028C, |
| .sense_interrupt_mask_reg = 0x00288, |
| .clr_interrupt_reg = 0x00284, |
| .sense_interrupt_reg = 0x00280, |
| .ioarrin_reg = 0x00504, |
| .sense_uproc_interrupt_reg = 0x00290, |
| .set_uproc_interrupt_reg = 0x00290, |
| .clr_uproc_interrupt_reg = 0x00294 |
| } |
| }, |
| }; |
| |
| static const struct ipr_chip_t ipr_chip[] = { |
| { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, |
| { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } |
| }; |
| |
| static int ipr_max_bus_speeds [] = { |
| IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE |
| }; |
| |
| MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); |
| MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); |
| module_param_named(max_speed, ipr_max_speed, uint, 0); |
| MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); |
| module_param_named(log_level, ipr_log_level, uint, 0); |
| MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); |
| module_param_named(testmode, ipr_testmode, int, 0); |
| MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); |
| module_param_named(fastfail, ipr_fastfail, int, 0); |
| MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); |
| module_param_named(transop_timeout, ipr_transop_timeout, int, 0); |
| MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); |
| module_param_named(enable_cache, ipr_enable_cache, int, 0); |
| MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)"); |
| module_param_named(debug, ipr_debug, int, 0); |
| MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); |
| module_param_named(auto_create, ipr_auto_create, int, 0); |
| MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(IPR_DRIVER_VERSION); |
| |
| static const char *ipr_gpdd_dev_end_states[] = { |
| "Command complete", |
| "Terminated by host", |
| "Terminated by device reset", |
| "Terminated by bus reset", |
| "Unknown", |
| "Command not started" |
| }; |
| |
| static const char *ipr_gpdd_dev_bus_phases[] = { |
| "Bus free", |
| "Arbitration", |
| "Selection", |
| "Message out", |
| "Command", |
| "Message in", |
| "Data out", |
| "Data in", |
| "Status", |
| "Reselection", |
| "Unknown" |
| }; |
| |
| /* A constant array of IOASCs/URCs/Error Messages */ |
| static const |
| struct ipr_error_table_t ipr_error_table[] = { |
| {0x00000000, 1, 1, |
| "8155: An unknown error was received"}, |
| {0x00330000, 0, 0, |
| "Soft underlength error"}, |
| {0x005A0000, 0, 0, |
| "Command to be cancelled not found"}, |
| {0x00808000, 0, 0, |
| "Qualified success"}, |
| {0x01080000, 1, 1, |
| "FFFE: Soft device bus error recovered by the IOA"}, |
| {0x01170600, 0, 1, |
| "FFF9: Device sector reassign successful"}, |
| {0x01170900, 0, 1, |
| "FFF7: Media error recovered by device rewrite procedures"}, |
| {0x01180200, 0, 1, |
| "7001: IOA sector reassignment successful"}, |
| {0x01180500, 0, 1, |
| "FFF9: Soft media error. Sector reassignment recommended"}, |
| {0x01180600, 0, 1, |
| "FFF7: Media error recovered by IOA rewrite procedures"}, |
| {0x01418000, 0, 1, |
| "FF3D: Soft PCI bus error recovered by the IOA"}, |
| {0x01440000, 1, 1, |
| "FFF6: Device hardware error recovered by the IOA"}, |
| {0x01448100, 0, 1, |
| "FFF6: Device hardware error recovered by the device"}, |
| {0x01448200, 1, 1, |
| "FF3D: Soft IOA error recovered by the IOA"}, |
| {0x01448300, 0, 1, |
| "FFFA: Undefined device response recovered by the IOA"}, |
| {0x014A0000, 1, 1, |
| "FFF6: Device bus error, message or command phase"}, |
| {0x015D0000, 0, 1, |
| "FFF6: Failure prediction threshold exceeded"}, |
| {0x015D9200, 0, 1, |
| "8009: Impending cache battery pack failure"}, |
| {0x02040400, 0, 0, |
| "34FF: Disk device format in progress"}, |
| {0x023F0000, 0, 0, |
| "Synchronization required"}, |
| {0x024E0000, 0, 0, |
| "No ready, IOA shutdown"}, |
| {0x025A0000, 0, 0, |
| "Not ready, IOA has been shutdown"}, |
| {0x02670100, 0, 1, |
| "3020: Storage subsystem configuration error"}, |
| {0x03110B00, 0, 0, |
| "FFF5: Medium error, data unreadable, recommend reassign"}, |
| {0x03110C00, 0, 0, |
| "7000: Medium error, data unreadable, do not reassign"}, |
| {0x03310000, 0, 1, |
| "FFF3: Disk media format bad"}, |
| {0x04050000, 0, 1, |
| "3002: Addressed device failed to respond to selection"}, |
| {0x04080000, 1, 1, |
| "3100: Device bus error"}, |
| {0x04080100, 0, 1, |
| "3109: IOA timed out a device command"}, |
| {0x04088000, 0, 0, |
| "3120: SCSI bus is not operational"}, |
| {0x04118000, 0, 1, |
| "9000: IOA reserved area data check"}, |
| {0x04118100, 0, 1, |
| "9001: IOA reserved area invalid data pattern"}, |
| {0x04118200, 0, 1, |
| "9002: IOA reserved area LRC error"}, |
| {0x04320000, 0, 1, |
| "102E: Out of alternate sectors for disk storage"}, |
| {0x04330000, 1, 1, |
| "FFF4: Data transfer underlength error"}, |
| {0x04338000, 1, 1, |
| "FFF4: Data transfer overlength error"}, |
| {0x043E0100, 0, 1, |
| "3400: Logical unit failure"}, |
| {0x04408500, 0, 1, |
| "FFF4: Device microcode is corrupt"}, |
| {0x04418000, 1, 1, |
| "8150: PCI bus error"}, |
| {0x04430000, 1, 0, |
| "Unsupported device bus message received"}, |
| {0x04440000, 1, 1, |
| "FFF4: Disk device problem"}, |
| {0x04448200, 1, 1, |
| "8150: Permanent IOA failure"}, |
| {0x04448300, 0, 1, |
| "3010: Disk device returned wrong response to IOA"}, |
| {0x04448400, 0, 1, |
| "8151: IOA microcode error"}, |
| {0x04448500, 0, 0, |
| "Device bus status error"}, |
| {0x04448600, 0, 1, |
| "8157: IOA error requiring IOA reset to recover"}, |
| {0x04490000, 0, 0, |
| "Message reject received from the device"}, |
| {0x04449200, 0, 1, |
| "8008: A permanent cache battery pack failure occurred"}, |
| {0x0444A000, 0, 1, |
| "9090: Disk unit has been modified after the last known status"}, |
| {0x0444A200, 0, 1, |
| "9081: IOA detected device error"}, |
| {0x0444A300, 0, 1, |
| "9082: IOA detected device error"}, |
| {0x044A0000, 1, 1, |
| "3110: Device bus error, message or command phase"}, |
| {0x04670400, 0, 1, |
| "9091: Incorrect hardware configuration change has been detected"}, |
| {0x04678000, 0, 1, |
| "9073: Invalid multi-adapter configuration"}, |
| {0x046E0000, 0, 1, |
| "FFF4: Command to logical unit failed"}, |
| {0x05240000, 1, 0, |
| "Illegal request, invalid request type or request packet"}, |
| {0x05250000, 0, 0, |
| "Illegal request, invalid resource handle"}, |
| {0x05258000, 0, 0, |
| "Illegal request, commands not allowed to this device"}, |
| {0x05258100, 0, 0, |
| "Illegal request, command not allowed to a secondary adapter"}, |
| {0x05260000, 0, 0, |
| "Illegal request, invalid field in parameter list"}, |
| {0x05260100, 0, 0, |
| "Illegal request, parameter not supported"}, |
| {0x05260200, 0, 0, |
| "Illegal request, parameter value invalid"}, |
| {0x052C0000, 0, 0, |
| "Illegal request, command sequence error"}, |
| {0x052C8000, 1, 0, |
| "Illegal request, dual adapter support not enabled"}, |
| {0x06040500, 0, 1, |
| "9031: Array protection temporarily suspended, protection resuming"}, |
| {0x06040600, 0, 1, |
| "9040: Array protection temporarily suspended, protection resuming"}, |
| {0x06290000, 0, 1, |
| "FFFB: SCSI bus was reset"}, |
| {0x06290500, 0, 0, |
| "FFFE: SCSI bus transition to single ended"}, |
| {0x06290600, 0, 0, |
| "FFFE: SCSI bus transition to LVD"}, |
| {0x06298000, 0, 1, |
| "FFFB: SCSI bus was reset by another initiator"}, |
| {0x063F0300, 0, 1, |
| "3029: A device replacement has occurred"}, |
| {0x064C8000, 0, 1, |
| "9051: IOA cache data exists for a missing or failed device"}, |
| {0x064C8100, 0, 1, |
| "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, |
| {0x06670100, 0, 1, |
| "9025: Disk unit is not supported at its physical location"}, |
| {0x06670600, 0, 1, |
| "3020: IOA detected a SCSI bus configuration error"}, |
| {0x06678000, 0, 1, |
| "3150: SCSI bus configuration error"}, |
| {0x06678100, 0, 1, |
| "9074: Asymmetric advanced function disk configuration"}, |
| {0x06690200, 0, 1, |
| "9041: Array protection temporarily suspended"}, |
| {0x06698200, 0, 1, |
| "9042: Corrupt array parity detected on specified device"}, |
| {0x066B0200, 0, 1, |
| "9030: Array no longer protected due to missing or failed disk unit"}, |
| {0x066B8000, 0, 1, |
| "9071: Link operational transition"}, |
| {0x066B8100, 0, 1, |
| "9072: Link not operational transition"}, |
| {0x066B8200, 0, 1, |
| "9032: Array exposed but still protected"}, |
| {0x07270000, 0, 0, |
| "Failure due to other device"}, |
| {0x07278000, 0, 1, |
| "9008: IOA does not support functions expected by devices"}, |
| {0x07278100, 0, 1, |
| "9010: Cache data associated with attached devices cannot be found"}, |
| {0x07278200, 0, 1, |
| "9011: Cache data belongs to devices other than those attached"}, |
| {0x07278400, 0, 1, |
| "9020: Array missing 2 or more devices with only 1 device present"}, |
| {0x07278500, 0, 1, |
| "9021: Array missing 2 or more devices with 2 or more devices present"}, |
| {0x07278600, 0, 1, |
| "9022: Exposed array is missing a required device"}, |
| {0x07278700, 0, 1, |
| "9023: Array member(s) not at required physical locations"}, |
| {0x07278800, 0, 1, |
| "9024: Array not functional due to present hardware configuration"}, |
| {0x07278900, 0, 1, |
| "9026: Array not functional due to present hardware configuration"}, |
| {0x07278A00, 0, 1, |
| "9027: Array is missing a device and parity is out of sync"}, |
| {0x07278B00, 0, 1, |
| "9028: Maximum number of arrays already exist"}, |
| {0x07278C00, 0, 1, |
| "9050: Required cache data cannot be located for a disk unit"}, |
| {0x07278D00, 0, 1, |
| "9052: Cache data exists for a device that has been modified"}, |
| {0x07278F00, 0, 1, |
| "9054: IOA resources not available due to previous problems"}, |
| {0x07279100, 0, 1, |
| "9092: Disk unit requires initialization before use"}, |
| {0x07279200, 0, 1, |
| "9029: Incorrect hardware configuration change has been detected"}, |
| {0x07279600, 0, 1, |
| "9060: One or more disk pairs are missing from an array"}, |
| {0x07279700, 0, 1, |
| "9061: One or more disks are missing from an array"}, |
| {0x07279800, 0, 1, |
| "9062: One or more disks are missing from an array"}, |
| {0x07279900, 0, 1, |
| "9063: Maximum number of functional arrays has been exceeded"}, |
| {0x0B260000, 0, 0, |
| "Aborted command, invalid descriptor"}, |
| {0x0B5A0000, 0, 0, |
| "Command terminated by host"} |
| }; |
| |
| static const struct ipr_ses_table_entry ipr_ses_table[] = { |
| { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, |
| { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, |
| { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ |
| { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ |
| { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ |
| { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ |
| { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, |
| { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, |
| { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, |
| { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, |
| { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, |
| { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, |
| { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } |
| }; |
| |
| /* |
| * Function Prototypes |
| */ |
| static int ipr_reset_alert(struct ipr_cmnd *); |
| static void ipr_process_ccn(struct ipr_cmnd *); |
| static void ipr_process_error(struct ipr_cmnd *); |
| static void ipr_reset_ioa_job(struct ipr_cmnd *); |
| static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, |
| enum ipr_shutdown_type); |
| |
| #ifdef CONFIG_SCSI_IPR_TRACE |
| /** |
| * ipr_trc_hook - Add a trace entry to the driver trace |
| * @ipr_cmd: ipr command struct |
| * @type: trace type |
| * @add_data: additional data |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, |
| u8 type, u32 add_data) |
| { |
| struct ipr_trace_entry *trace_entry; |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; |
| trace_entry->time = jiffies; |
| trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; |
| trace_entry->type = type; |
| trace_entry->cmd_index = ipr_cmd->cmd_index; |
| trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; |
| trace_entry->u.add_data = add_data; |
| } |
| #else |
| #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) |
| #endif |
| |
| /** |
| * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse |
| * @ipr_cmd: ipr command struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; |
| |
| memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); |
| ioarcb->write_data_transfer_length = 0; |
| ioarcb->read_data_transfer_length = 0; |
| ioarcb->write_ioadl_len = 0; |
| ioarcb->read_ioadl_len = 0; |
| ioasa->ioasc = 0; |
| ioasa->residual_data_len = 0; |
| |
| ipr_cmd->scsi_cmd = NULL; |
| ipr_cmd->sense_buffer[0] = 0; |
| ipr_cmd->dma_use_sg = 0; |
| } |
| |
| /** |
| * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block |
| * @ipr_cmd: ipr command struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) |
| { |
| ipr_reinit_ipr_cmnd(ipr_cmd); |
| ipr_cmd->u.scratch = 0; |
| ipr_cmd->sibling = NULL; |
| init_timer(&ipr_cmd->timer); |
| } |
| |
| /** |
| * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * pointer to ipr command struct |
| **/ |
| static |
| struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| struct ipr_cmnd *ipr_cmd; |
| |
| ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); |
| list_del(&ipr_cmd->queue); |
| ipr_init_ipr_cmnd(ipr_cmd); |
| |
| return ipr_cmd; |
| } |
| |
| /** |
| * ipr_unmap_sglist - Unmap scatterlist if mapped |
| * @ioa_cfg: ioa config struct |
| * @ipr_cmd: ipr command struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_cmnd *ipr_cmd) |
| { |
| struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| |
| if (ipr_cmd->dma_use_sg) { |
| if (scsi_cmd->use_sg > 0) { |
| pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, |
| scsi_cmd->use_sg, |
| scsi_cmd->sc_data_direction); |
| } else { |
| pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, |
| scsi_cmd->request_bufflen, |
| scsi_cmd->sc_data_direction); |
| } |
| } |
| } |
| |
| /** |
| * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts |
| * @ioa_cfg: ioa config struct |
| * @clr_ints: interrupts to clear |
| * |
| * This function masks all interrupts on the adapter, then clears the |
| * interrupts specified in the mask |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, |
| u32 clr_ints) |
| { |
| volatile u32 int_reg; |
| |
| /* Stop new interrupts */ |
| ioa_cfg->allow_interrupts = 0; |
| |
| /* Set interrupt mask to stop all new interrupts */ |
| writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); |
| |
| /* Clear any pending interrupts */ |
| writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); |
| int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| } |
| |
| /** |
| * ipr_save_pcix_cmd_reg - Save PCI-X command register |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * 0 on success / -EIO on failure |
| **/ |
| static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); |
| |
| if (pcix_cmd_reg == 0) { |
| dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); |
| return -EIO; |
| } |
| |
| if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, |
| &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { |
| dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); |
| return -EIO; |
| } |
| |
| ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; |
| return 0; |
| } |
| |
| /** |
| * ipr_set_pcix_cmd_reg - Setup PCI-X command register |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * 0 on success / -EIO on failure |
| **/ |
| static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); |
| |
| if (pcix_cmd_reg) { |
| if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, |
| ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { |
| dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); |
| return -EIO; |
| } |
| } else { |
| dev_err(&ioa_cfg->pdev->dev, |
| "Failed to setup PCI-X command register\n"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ipr_scsi_eh_done - mid-layer done function for aborted ops |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is invoked by the interrupt handler for |
| * ops generated by the SCSI mid-layer which are being aborted. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| |
| scsi_cmd->result |= (DID_ERROR << 16); |
| |
| ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| scsi_cmd->scsi_done(scsi_cmd); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| } |
| |
| /** |
| * ipr_fail_all_ops - Fails all outstanding ops. |
| * @ioa_cfg: ioa config struct |
| * |
| * This function fails all outstanding ops. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| struct ipr_cmnd *ipr_cmd, *temp; |
| |
| ENTER; |
| list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { |
| list_del(&ipr_cmd->queue); |
| |
| ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); |
| ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); |
| |
| if (ipr_cmd->scsi_cmd) |
| ipr_cmd->done = ipr_scsi_eh_done; |
| |
| ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); |
| del_timer(&ipr_cmd->timer); |
| ipr_cmd->done(ipr_cmd); |
| } |
| |
| LEAVE; |
| } |
| |
| /** |
| * ipr_do_req - Send driver initiated requests. |
| * @ipr_cmd: ipr command struct |
| * @done: done function |
| * @timeout_func: timeout function |
| * @timeout: timeout value |
| * |
| * This function sends the specified command to the adapter with the |
| * timeout given. The done function is invoked on command completion. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_do_req(struct ipr_cmnd *ipr_cmd, |
| void (*done) (struct ipr_cmnd *), |
| void (*timeout_func) (struct ipr_cmnd *), u32 timeout) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| |
| ipr_cmd->done = done; |
| |
| ipr_cmd->timer.data = (unsigned long) ipr_cmd; |
| ipr_cmd->timer.expires = jiffies + timeout; |
| ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; |
| |
| add_timer(&ipr_cmd->timer); |
| |
| ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); |
| |
| mb(); |
| writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), |
| ioa_cfg->regs.ioarrin_reg); |
| } |
| |
| /** |
| * ipr_internal_cmd_done - Op done function for an internally generated op. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is the op done function for an internally generated, |
| * blocking op. It simply wakes the sleeping thread. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) |
| { |
| if (ipr_cmd->sibling) |
| ipr_cmd->sibling = NULL; |
| else |
| complete(&ipr_cmd->completion); |
| } |
| |
| /** |
| * ipr_send_blocking_cmd - Send command and sleep on its completion. |
| * @ipr_cmd: ipr command struct |
| * @timeout_func: function to invoke if command times out |
| * @timeout: timeout |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, |
| void (*timeout_func) (struct ipr_cmnd *ipr_cmd), |
| u32 timeout) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| init_completion(&ipr_cmd->completion); |
| ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); |
| |
| spin_unlock_irq(ioa_cfg->host->host_lock); |
| wait_for_completion(&ipr_cmd->completion); |
| spin_lock_irq(ioa_cfg->host->host_lock); |
| } |
| |
| /** |
| * ipr_send_hcam - Send an HCAM to the adapter. |
| * @ioa_cfg: ioa config struct |
| * @type: HCAM type |
| * @hostrcb: hostrcb struct |
| * |
| * This function will send a Host Controlled Async command to the adapter. |
| * If HCAMs are currently not allowed to be issued to the adapter, it will |
| * place the hostrcb on the free queue. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, |
| struct ipr_hostrcb *hostrcb) |
| { |
| struct ipr_cmnd *ipr_cmd; |
| struct ipr_ioarcb *ioarcb; |
| |
| if (ioa_cfg->allow_cmds) { |
| ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); |
| |
| ipr_cmd->u.hostrcb = hostrcb; |
| ioarcb = &ipr_cmd->ioarcb; |
| |
| ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; |
| ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; |
| ioarcb->cmd_pkt.cdb[1] = type; |
| ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; |
| ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; |
| |
| ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); |
| ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| ipr_cmd->ioadl[0].flags_and_data_len = |
| cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); |
| ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); |
| |
| if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) |
| ipr_cmd->done = ipr_process_ccn; |
| else |
| ipr_cmd->done = ipr_process_error; |
| |
| ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); |
| |
| mb(); |
| writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), |
| ioa_cfg->regs.ioarrin_reg); |
| } else { |
| list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); |
| } |
| } |
| |
| /** |
| * ipr_init_res_entry - Initialize a resource entry struct. |
| * @res: resource entry struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_init_res_entry(struct ipr_resource_entry *res) |
| { |
| res->needs_sync_complete = 0; |
| res->in_erp = 0; |
| res->add_to_ml = 0; |
| res->del_from_ml = 0; |
| res->resetting_device = 0; |
| res->sdev = NULL; |
| } |
| |
| /** |
| * ipr_handle_config_change - Handle a config change from the adapter |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| struct ipr_resource_entry *res = NULL; |
| struct ipr_config_table_entry *cfgte; |
| u32 is_ndn = 1; |
| |
| cfgte = &hostrcb->hcam.u.ccn.cfgte; |
| |
| list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, |
| sizeof(cfgte->res_addr))) { |
| is_ndn = 0; |
| break; |
| } |
| } |
| |
| if (is_ndn) { |
| if (list_empty(&ioa_cfg->free_res_q)) { |
| ipr_send_hcam(ioa_cfg, |
| IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, |
| hostrcb); |
| return; |
| } |
| |
| res = list_entry(ioa_cfg->free_res_q.next, |
| struct ipr_resource_entry, queue); |
| |
| list_del(&res->queue); |
| ipr_init_res_entry(res); |
| list_add_tail(&res->queue, &ioa_cfg->used_res_q); |
| } |
| |
| memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); |
| |
| if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { |
| if (res->sdev) { |
| res->sdev->hostdata = NULL; |
| res->del_from_ml = 1; |
| if (ioa_cfg->allow_ml_add_del) |
| schedule_work(&ioa_cfg->work_q); |
| } else |
| list_move_tail(&res->queue, &ioa_cfg->free_res_q); |
| } else if (!res->sdev) { |
| res->add_to_ml = 1; |
| if (ioa_cfg->allow_ml_add_del) |
| schedule_work(&ioa_cfg->work_q); |
| } |
| |
| ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); |
| } |
| |
| /** |
| * ipr_process_ccn - Op done function for a CCN. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is the op done function for a configuration |
| * change notification host controlled async from the adapter. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| list_del(&hostrcb->queue); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| |
| if (ioasc) { |
| if (ioasc != IPR_IOASC_IOA_WAS_RESET) |
| dev_err(&ioa_cfg->pdev->dev, |
| "Host RCB failed with IOASC: 0x%08X\n", ioasc); |
| |
| ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); |
| } else { |
| ipr_handle_config_change(ioa_cfg, hostrcb); |
| } |
| } |
| |
| /** |
| * ipr_log_vpd - Log the passed VPD to the error log. |
| * @vpd: vendor/product id/sn struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_vpd(struct ipr_vpd *vpd) |
| { |
| char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN |
| + IPR_SERIAL_NUM_LEN]; |
| |
| memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); |
| memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, |
| IPR_PROD_ID_LEN); |
| buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; |
| ipr_err("Vendor/Product ID: %s\n", buffer); |
| |
| memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); |
| buffer[IPR_SERIAL_NUM_LEN] = '\0'; |
| ipr_err(" Serial Number: %s\n", buffer); |
| } |
| |
| /** |
| * ipr_log_ext_vpd - Log the passed extended VPD to the error log. |
| * @vpd: vendor/product id/sn/wwn struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) |
| { |
| ipr_log_vpd(&vpd->vpd); |
| ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), |
| be32_to_cpu(vpd->wwid[1])); |
| } |
| |
| /** |
| * ipr_log_enhanced_cache_error - Log a cache error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| struct ipr_hostrcb_type_12_error *error = |
| &hostrcb->hcam.u.error.u.type_12_error; |
| |
| ipr_err("-----Current Configuration-----\n"); |
| ipr_err("Cache Directory Card Information:\n"); |
| ipr_log_ext_vpd(&error->ioa_vpd); |
| ipr_err("Adapter Card Information:\n"); |
| ipr_log_ext_vpd(&error->cfc_vpd); |
| |
| ipr_err("-----Expected Configuration-----\n"); |
| ipr_err("Cache Directory Card Information:\n"); |
| ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); |
| ipr_err("Adapter Card Information:\n"); |
| ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); |
| |
| ipr_err("Additional IOA Data: %08X %08X %08X\n", |
| be32_to_cpu(error->ioa_data[0]), |
| be32_to_cpu(error->ioa_data[1]), |
| be32_to_cpu(error->ioa_data[2])); |
| } |
| |
| /** |
| * ipr_log_cache_error - Log a cache error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| struct ipr_hostrcb_type_02_error *error = |
| &hostrcb->hcam.u.error.u.type_02_error; |
| |
| ipr_err("-----Current Configuration-----\n"); |
| ipr_err("Cache Directory Card Information:\n"); |
| ipr_log_vpd(&error->ioa_vpd); |
| ipr_err("Adapter Card Information:\n"); |
| ipr_log_vpd(&error->cfc_vpd); |
| |
| ipr_err("-----Expected Configuration-----\n"); |
| ipr_err("Cache Directory Card Information:\n"); |
| ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); |
| ipr_err("Adapter Card Information:\n"); |
| ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); |
| |
| ipr_err("Additional IOA Data: %08X %08X %08X\n", |
| be32_to_cpu(error->ioa_data[0]), |
| be32_to_cpu(error->ioa_data[1]), |
| be32_to_cpu(error->ioa_data[2])); |
| } |
| |
| /** |
| * ipr_log_enhanced_config_error - Log a configuration error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| int errors_logged, i; |
| struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; |
| struct ipr_hostrcb_type_13_error *error; |
| |
| error = &hostrcb->hcam.u.error.u.type_13_error; |
| errors_logged = be32_to_cpu(error->errors_logged); |
| |
| ipr_err("Device Errors Detected/Logged: %d/%d\n", |
| be32_to_cpu(error->errors_detected), errors_logged); |
| |
| dev_entry = error->dev; |
| |
| for (i = 0; i < errors_logged; i++, dev_entry++) { |
| ipr_err_separator; |
| |
| ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); |
| ipr_log_ext_vpd(&dev_entry->vpd); |
| |
| ipr_err("-----New Device Information-----\n"); |
| ipr_log_ext_vpd(&dev_entry->new_vpd); |
| |
| ipr_err("Cache Directory Card Information:\n"); |
| ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); |
| |
| ipr_err("Adapter Card Information:\n"); |
| ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); |
| } |
| } |
| |
| /** |
| * ipr_log_config_error - Log a configuration error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| int errors_logged, i; |
| struct ipr_hostrcb_device_data_entry *dev_entry; |
| struct ipr_hostrcb_type_03_error *error; |
| |
| error = &hostrcb->hcam.u.error.u.type_03_error; |
| errors_logged = be32_to_cpu(error->errors_logged); |
| |
| ipr_err("Device Errors Detected/Logged: %d/%d\n", |
| be32_to_cpu(error->errors_detected), errors_logged); |
| |
| dev_entry = error->dev; |
| |
| for (i = 0; i < errors_logged; i++, dev_entry++) { |
| ipr_err_separator; |
| |
| ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); |
| ipr_log_vpd(&dev_entry->vpd); |
| |
| ipr_err("-----New Device Information-----\n"); |
| ipr_log_vpd(&dev_entry->new_vpd); |
| |
| ipr_err("Cache Directory Card Information:\n"); |
| ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); |
| |
| ipr_err("Adapter Card Information:\n"); |
| ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); |
| |
| ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", |
| be32_to_cpu(dev_entry->ioa_data[0]), |
| be32_to_cpu(dev_entry->ioa_data[1]), |
| be32_to_cpu(dev_entry->ioa_data[2]), |
| be32_to_cpu(dev_entry->ioa_data[3]), |
| be32_to_cpu(dev_entry->ioa_data[4])); |
| } |
| } |
| |
| /** |
| * ipr_log_enhanced_array_error - Log an array configuration error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| int i, num_entries; |
| struct ipr_hostrcb_type_14_error *error; |
| struct ipr_hostrcb_array_data_entry_enhanced *array_entry; |
| const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; |
| |
| error = &hostrcb->hcam.u.error.u.type_14_error; |
| |
| ipr_err_separator; |
| |
| ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", |
| error->protection_level, |
| ioa_cfg->host->host_no, |
| error->last_func_vset_res_addr.bus, |
| error->last_func_vset_res_addr.target, |
| error->last_func_vset_res_addr.lun); |
| |
| ipr_err_separator; |
| |
| array_entry = error->array_member; |
| num_entries = min_t(u32, be32_to_cpu(error->num_entries), |
| sizeof(error->array_member)); |
| |
| for (i = 0; i < num_entries; i++, array_entry++) { |
| if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) |
| continue; |
| |
| if (be32_to_cpu(error->exposed_mode_adn) == i) |
| ipr_err("Exposed Array Member %d:\n", i); |
| else |
| ipr_err("Array Member %d:\n", i); |
| |
| ipr_log_ext_vpd(&array_entry->vpd); |
| ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); |
| ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, |
| "Expected Location"); |
| |
| ipr_err_separator; |
| } |
| } |
| |
| /** |
| * ipr_log_array_error - Log an array configuration error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| int i; |
| struct ipr_hostrcb_type_04_error *error; |
| struct ipr_hostrcb_array_data_entry *array_entry; |
| const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; |
| |
| error = &hostrcb->hcam.u.error.u.type_04_error; |
| |
| ipr_err_separator; |
| |
| ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", |
| error->protection_level, |
| ioa_cfg->host->host_no, |
| error->last_func_vset_res_addr.bus, |
| error->last_func_vset_res_addr.target, |
| error->last_func_vset_res_addr.lun); |
| |
| ipr_err_separator; |
| |
| array_entry = error->array_member; |
| |
| for (i = 0; i < 18; i++) { |
| if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) |
| continue; |
| |
| if (be32_to_cpu(error->exposed_mode_adn) == i) |
| ipr_err("Exposed Array Member %d:\n", i); |
| else |
| ipr_err("Array Member %d:\n", i); |
| |
| ipr_log_vpd(&array_entry->vpd); |
| |
| ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); |
| ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, |
| "Expected Location"); |
| |
| ipr_err_separator; |
| |
| if (i == 9) |
| array_entry = error->array_member2; |
| else |
| array_entry++; |
| } |
| } |
| |
| /** |
| * ipr_log_hex_data - Log additional hex IOA error data. |
| * @data: IOA error data |
| * @len: data length |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_hex_data(u32 *data, int len) |
| { |
| int i; |
| |
| if (len == 0) |
| return; |
| |
| for (i = 0; i < len / 4; i += 4) { |
| ipr_err("%08X: %08X %08X %08X %08X\n", i*4, |
| be32_to_cpu(data[i]), |
| be32_to_cpu(data[i+1]), |
| be32_to_cpu(data[i+2]), |
| be32_to_cpu(data[i+3])); |
| } |
| } |
| |
| /** |
| * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| struct ipr_hostrcb_type_17_error *error; |
| |
| error = &hostrcb->hcam.u.error.u.type_17_error; |
| error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; |
| |
| ipr_err("%s\n", error->failure_reason); |
| ipr_err("Remote Adapter VPD:\n"); |
| ipr_log_ext_vpd(&error->vpd); |
| ipr_log_hex_data(error->data, |
| be32_to_cpu(hostrcb->hcam.length) - |
| (offsetof(struct ipr_hostrcb_error, u) + |
| offsetof(struct ipr_hostrcb_type_17_error, data))); |
| } |
| |
| /** |
| * ipr_log_dual_ioa_error - Log a dual adapter error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| struct ipr_hostrcb_type_07_error *error; |
| |
| error = &hostrcb->hcam.u.error.u.type_07_error; |
| error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; |
| |
| ipr_err("%s\n", error->failure_reason); |
| ipr_err("Remote Adapter VPD:\n"); |
| ipr_log_vpd(&error->vpd); |
| ipr_log_hex_data(error->data, |
| be32_to_cpu(hostrcb->hcam.length) - |
| (offsetof(struct ipr_hostrcb_error, u) + |
| offsetof(struct ipr_hostrcb_type_07_error, data))); |
| } |
| |
| /** |
| * ipr_log_generic_error - Log an adapter error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| ipr_log_hex_data(hostrcb->hcam.u.raw.data, |
| be32_to_cpu(hostrcb->hcam.length)); |
| } |
| |
| /** |
| * ipr_get_error - Find the specfied IOASC in the ipr_error_table. |
| * @ioasc: IOASC |
| * |
| * This function will return the index of into the ipr_error_table |
| * for the specified IOASC. If the IOASC is not in the table, |
| * 0 will be returned, which points to the entry used for unknown errors. |
| * |
| * Return value: |
| * index into the ipr_error_table |
| **/ |
| static u32 ipr_get_error(u32 ioasc) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) |
| if (ipr_error_table[i].ioasc == ioasc) |
| return i; |
| |
| return 0; |
| } |
| |
| /** |
| * ipr_handle_log_data - Log an adapter error. |
| * @ioa_cfg: ioa config struct |
| * @hostrcb: hostrcb struct |
| * |
| * This function logs an adapter error to the system. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_hostrcb *hostrcb) |
| { |
| u32 ioasc; |
| int error_index; |
| |
| if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) |
| return; |
| |
| if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) |
| dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); |
| |
| ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); |
| |
| if (ioasc == IPR_IOASC_BUS_WAS_RESET || |
| ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { |
| /* Tell the midlayer we had a bus reset so it will handle the UA properly */ |
| scsi_report_bus_reset(ioa_cfg->host, |
| hostrcb->hcam.u.error.failing_dev_res_addr.bus); |
| } |
| |
| error_index = ipr_get_error(ioasc); |
| |
| if (!ipr_error_table[error_index].log_hcam) |
| return; |
| |
| if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) { |
| ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr, |
| "%s\n", ipr_error_table[error_index].error); |
| } else { |
| dev_err(&ioa_cfg->pdev->dev, "%s\n", |
| ipr_error_table[error_index].error); |
| } |
| |
| /* Set indication we have logged an error */ |
| ioa_cfg->errors_logged++; |
| |
| if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) |
| return; |
| if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) |
| hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); |
| |
| switch (hostrcb->hcam.overlay_id) { |
| case IPR_HOST_RCB_OVERLAY_ID_2: |
| ipr_log_cache_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_3: |
| ipr_log_config_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_4: |
| case IPR_HOST_RCB_OVERLAY_ID_6: |
| ipr_log_array_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_7: |
| ipr_log_dual_ioa_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_12: |
| ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_13: |
| ipr_log_enhanced_config_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_14: |
| case IPR_HOST_RCB_OVERLAY_ID_16: |
| ipr_log_enhanced_array_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_17: |
| ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); |
| break; |
| case IPR_HOST_RCB_OVERLAY_ID_1: |
| case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: |
| default: |
| ipr_log_generic_error(ioa_cfg, hostrcb); |
| break; |
| } |
| } |
| |
| /** |
| * ipr_process_error - Op done function for an adapter error log. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is the op done function for an error log host |
| * controlled async from the adapter. It will log the error and |
| * send the HCAM back to the adapter. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_process_error(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| list_del(&hostrcb->queue); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| |
| if (!ioasc) { |
| ipr_handle_log_data(ioa_cfg, hostrcb); |
| } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "Host RCB failed with IOASC: 0x%08X\n", ioasc); |
| } |
| |
| ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); |
| } |
| |
| /** |
| * ipr_timeout - An internally generated op has timed out. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function blocks host requests and initiates an |
| * adapter reset. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_timeout(struct ipr_cmnd *ipr_cmd) |
| { |
| unsigned long lock_flags = 0; |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| ENTER; |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| ioa_cfg->errors_logged++; |
| dev_err(&ioa_cfg->pdev->dev, |
| "Adapter being reset due to command timeout.\n"); |
| |
| if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| ioa_cfg->sdt_state = GET_DUMP; |
| |
| if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| LEAVE; |
| } |
| |
| /** |
| * ipr_oper_timeout - Adapter timed out transitioning to operational |
| * @ipr_cmd: ipr command struct |
| * |
| * This function blocks host requests and initiates an |
| * adapter reset. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) |
| { |
| unsigned long lock_flags = 0; |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| ENTER; |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| ioa_cfg->errors_logged++; |
| dev_err(&ioa_cfg->pdev->dev, |
| "Adapter timed out transitioning to operational.\n"); |
| |
| if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| ioa_cfg->sdt_state = GET_DUMP; |
| |
| if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { |
| if (ipr_fastfail) |
| ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| } |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| LEAVE; |
| } |
| |
| /** |
| * ipr_reset_reload - Reset/Reload the IOA |
| * @ioa_cfg: ioa config struct |
| * @shutdown_type: shutdown type |
| * |
| * This function resets the adapter and re-initializes it. |
| * This function assumes that all new host commands have been stopped. |
| * Return value: |
| * SUCCESS / FAILED |
| **/ |
| static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, |
| enum ipr_shutdown_type shutdown_type) |
| { |
| if (!ioa_cfg->in_reset_reload) |
| ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); |
| |
| spin_unlock_irq(ioa_cfg->host->host_lock); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| spin_lock_irq(ioa_cfg->host->host_lock); |
| |
| /* If we got hit with a host reset while we were already resetting |
| the adapter for some reason, and the reset failed. */ |
| if (ioa_cfg->ioa_is_dead) { |
| ipr_trace; |
| return FAILED; |
| } |
| |
| return SUCCESS; |
| } |
| |
| /** |
| * ipr_find_ses_entry - Find matching SES in SES table |
| * @res: resource entry struct of SES |
| * |
| * Return value: |
| * pointer to SES table entry / NULL on failure |
| **/ |
| static const struct ipr_ses_table_entry * |
| ipr_find_ses_entry(struct ipr_resource_entry *res) |
| { |
| int i, j, matches; |
| const struct ipr_ses_table_entry *ste = ipr_ses_table; |
| |
| for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { |
| for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { |
| if (ste->compare_product_id_byte[j] == 'X') { |
| if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) |
| matches++; |
| else |
| break; |
| } else |
| matches++; |
| } |
| |
| if (matches == IPR_PROD_ID_LEN) |
| return ste; |
| } |
| |
| return NULL; |
| } |
| |
| /** |
| * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus |
| * @ioa_cfg: ioa config struct |
| * @bus: SCSI bus |
| * @bus_width: bus width |
| * |
| * Return value: |
| * SCSI bus speed in units of 100KHz, 1600 is 160 MHz |
| * For a 2-byte wide SCSI bus, the maximum transfer speed is |
| * twice the maximum transfer rate (e.g. for a wide enabled bus, |
| * max 160MHz = max 320MB/sec). |
| **/ |
| static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) |
| { |
| struct ipr_resource_entry *res; |
| const struct ipr_ses_table_entry *ste; |
| u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); |
| |
| /* Loop through each config table entry in the config table buffer */ |
| list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) |
| continue; |
| |
| if (bus != res->cfgte.res_addr.bus) |
| continue; |
| |
| if (!(ste = ipr_find_ses_entry(res))) |
| continue; |
| |
| max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); |
| } |
| |
| return max_xfer_rate; |
| } |
| |
| /** |
| * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA |
| * @ioa_cfg: ioa config struct |
| * @max_delay: max delay in micro-seconds to wait |
| * |
| * Waits for an IODEBUG ACK from the IOA, doing busy looping. |
| * |
| * Return value: |
| * 0 on success / other on failure |
| **/ |
| static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) |
| { |
| volatile u32 pcii_reg; |
| int delay = 1; |
| |
| /* Read interrupt reg until IOA signals IO Debug Acknowledge */ |
| while (delay < max_delay) { |
| pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| |
| if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) |
| return 0; |
| |
| /* udelay cannot be used if delay is more than a few milliseconds */ |
| if ((delay / 1000) > MAX_UDELAY_MS) |
| mdelay(delay / 1000); |
| else |
| udelay(delay); |
| |
| delay += delay; |
| } |
| return -EIO; |
| } |
| |
| /** |
| * ipr_get_ldump_data_section - Dump IOA memory |
| * @ioa_cfg: ioa config struct |
| * @start_addr: adapter address to dump |
| * @dest: destination kernel buffer |
| * @length_in_words: length to dump in 4 byte words |
| * |
| * Return value: |
| * 0 on success / -EIO on failure |
| **/ |
| static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, |
| u32 start_addr, |
| __be32 *dest, u32 length_in_words) |
| { |
| volatile u32 temp_pcii_reg; |
| int i, delay = 0; |
| |
| /* Write IOA interrupt reg starting LDUMP state */ |
| writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), |
| ioa_cfg->regs.set_uproc_interrupt_reg); |
| |
| /* Wait for IO debug acknowledge */ |
| if (ipr_wait_iodbg_ack(ioa_cfg, |
| IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "IOA dump long data transfer timeout\n"); |
| return -EIO; |
| } |
| |
| /* Signal LDUMP interlocked - clear IO debug ack */ |
| writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, |
| ioa_cfg->regs.clr_interrupt_reg); |
| |
| /* Write Mailbox with starting address */ |
| writel(start_addr, ioa_cfg->ioa_mailbox); |
| |
| /* Signal address valid - clear IOA Reset alert */ |
| writel(IPR_UPROCI_RESET_ALERT, |
| ioa_cfg->regs.clr_uproc_interrupt_reg); |
| |
| for (i = 0; i < length_in_words; i++) { |
| /* Wait for IO debug acknowledge */ |
| if (ipr_wait_iodbg_ack(ioa_cfg, |
| IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "IOA dump short data transfer timeout\n"); |
| return -EIO; |
| } |
| |
| /* Read data from mailbox and increment destination pointer */ |
| *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); |
| dest++; |
| |
| /* For all but the last word of data, signal data received */ |
| if (i < (length_in_words - 1)) { |
| /* Signal dump data received - Clear IO debug Ack */ |
| writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, |
| ioa_cfg->regs.clr_interrupt_reg); |
| } |
| } |
| |
| /* Signal end of block transfer. Set reset alert then clear IO debug ack */ |
| writel(IPR_UPROCI_RESET_ALERT, |
| ioa_cfg->regs.set_uproc_interrupt_reg); |
| |
| writel(IPR_UPROCI_IO_DEBUG_ALERT, |
| ioa_cfg->regs.clr_uproc_interrupt_reg); |
| |
| /* Signal dump data received - Clear IO debug Ack */ |
| writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, |
| ioa_cfg->regs.clr_interrupt_reg); |
| |
| /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ |
| while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { |
| temp_pcii_reg = |
| readl(ioa_cfg->regs.sense_uproc_interrupt_reg); |
| |
| if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) |
| return 0; |
| |
| udelay(10); |
| delay += 10; |
| } |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_SCSI_IPR_DUMP |
| /** |
| * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer |
| * @ioa_cfg: ioa config struct |
| * @pci_address: adapter address |
| * @length: length of data to copy |
| * |
| * Copy data from PCI adapter to kernel buffer. |
| * Note: length MUST be a 4 byte multiple |
| * Return value: |
| * 0 on success / other on failure |
| **/ |
| static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, |
| unsigned long pci_address, u32 length) |
| { |
| int bytes_copied = 0; |
| int cur_len, rc, rem_len, rem_page_len; |
| __be32 *page; |
| unsigned long lock_flags = 0; |
| struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; |
| |
| while (bytes_copied < length && |
| (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { |
| if (ioa_dump->page_offset >= PAGE_SIZE || |
| ioa_dump->page_offset == 0) { |
| page = (__be32 *)__get_free_page(GFP_ATOMIC); |
| |
| if (!page) { |
| ipr_trace; |
| return bytes_copied; |
| } |
| |
| ioa_dump->page_offset = 0; |
| ioa_dump->ioa_data[ioa_dump->next_page_index] = page; |
| ioa_dump->next_page_index++; |
| } else |
| page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; |
| |
| rem_len = length - bytes_copied; |
| rem_page_len = PAGE_SIZE - ioa_dump->page_offset; |
| cur_len = min(rem_len, rem_page_len); |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (ioa_cfg->sdt_state == ABORT_DUMP) { |
| rc = -EIO; |
| } else { |
| rc = ipr_get_ldump_data_section(ioa_cfg, |
| pci_address + bytes_copied, |
| &page[ioa_dump->page_offset / 4], |
| (cur_len / sizeof(u32))); |
| } |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| if (!rc) { |
| ioa_dump->page_offset += cur_len; |
| bytes_copied += cur_len; |
| } else { |
| ipr_trace; |
| break; |
| } |
| schedule(); |
| } |
| |
| return bytes_copied; |
| } |
| |
| /** |
| * ipr_init_dump_entry_hdr - Initialize a dump entry header. |
| * @hdr: dump entry header struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) |
| { |
| hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; |
| hdr->num_elems = 1; |
| hdr->offset = sizeof(*hdr); |
| hdr->status = IPR_DUMP_STATUS_SUCCESS; |
| } |
| |
| /** |
| * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. |
| * @ioa_cfg: ioa config struct |
| * @driver_dump: driver dump struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_driver_dump *driver_dump) |
| { |
| struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; |
| |
| ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); |
| driver_dump->ioa_type_entry.hdr.len = |
| sizeof(struct ipr_dump_ioa_type_entry) - |
| sizeof(struct ipr_dump_entry_header); |
| driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; |
| driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; |
| driver_dump->ioa_type_entry.type = ioa_cfg->type; |
| driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | |
| (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | |
| ucode_vpd->minor_release[1]; |
| driver_dump->hdr.num_entries++; |
| } |
| |
| /** |
| * ipr_dump_version_data - Fill in the driver version in the dump. |
| * @ioa_cfg: ioa config struct |
| * @driver_dump: driver dump struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_driver_dump *driver_dump) |
| { |
| ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); |
| driver_dump->version_entry.hdr.len = |
| sizeof(struct ipr_dump_version_entry) - |
| sizeof(struct ipr_dump_entry_header); |
| driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; |
| driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; |
| strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); |
| driver_dump->hdr.num_entries++; |
| } |
| |
| /** |
| * ipr_dump_trace_data - Fill in the IOA trace in the dump. |
| * @ioa_cfg: ioa config struct |
| * @driver_dump: driver dump struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_driver_dump *driver_dump) |
| { |
| ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); |
| driver_dump->trace_entry.hdr.len = |
| sizeof(struct ipr_dump_trace_entry) - |
| sizeof(struct ipr_dump_entry_header); |
| driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; |
| driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; |
| memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); |
| driver_dump->hdr.num_entries++; |
| } |
| |
| /** |
| * ipr_dump_location_data - Fill in the IOA location in the dump. |
| * @ioa_cfg: ioa config struct |
| * @driver_dump: driver dump struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_driver_dump *driver_dump) |
| { |
| ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); |
| driver_dump->location_entry.hdr.len = |
| sizeof(struct ipr_dump_location_entry) - |
| sizeof(struct ipr_dump_entry_header); |
| driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; |
| driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; |
| strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); |
| driver_dump->hdr.num_entries++; |
| } |
| |
| /** |
| * ipr_get_ioa_dump - Perform a dump of the driver and adapter. |
| * @ioa_cfg: ioa config struct |
| * @dump: dump struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) |
| { |
| unsigned long start_addr, sdt_word; |
| unsigned long lock_flags = 0; |
| struct ipr_driver_dump *driver_dump = &dump->driver_dump; |
| struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; |
| u32 num_entries, start_off, end_off; |
| u32 bytes_to_copy, bytes_copied, rc; |
| struct ipr_sdt *sdt; |
| int i; |
| |
| ENTER; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| if (ioa_cfg->sdt_state != GET_DUMP) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return; |
| } |
| |
| start_addr = readl(ioa_cfg->ioa_mailbox); |
| |
| if (!ipr_sdt_is_fmt2(start_addr)) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "Invalid dump table format: %lx\n", start_addr); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return; |
| } |
| |
| dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); |
| |
| driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; |
| |
| /* Initialize the overall dump header */ |
| driver_dump->hdr.len = sizeof(struct ipr_driver_dump); |
| driver_dump->hdr.num_entries = 1; |
| driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); |
| driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; |
| driver_dump->hdr.os = IPR_DUMP_OS_LINUX; |
| driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; |
| |
| ipr_dump_version_data(ioa_cfg, driver_dump); |
| ipr_dump_location_data(ioa_cfg, driver_dump); |
| ipr_dump_ioa_type_data(ioa_cfg, driver_dump); |
| ipr_dump_trace_data(ioa_cfg, driver_dump); |
| |
| /* Update dump_header */ |
| driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); |
| |
| /* IOA Dump entry */ |
| ipr_init_dump_entry_hdr(&ioa_dump->hdr); |
| ioa_dump->format = IPR_SDT_FMT2; |
| ioa_dump->hdr.len = 0; |
| ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; |
| ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; |
| |
| /* First entries in sdt are actually a list of dump addresses and |
| lengths to gather the real dump data. sdt represents the pointer |
| to the ioa generated dump table. Dump data will be extracted based |
| on entries in this table */ |
| sdt = &ioa_dump->sdt; |
| |
| rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, |
| sizeof(struct ipr_sdt) / sizeof(__be32)); |
| |
| /* Smart Dump table is ready to use and the first entry is valid */ |
| if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "Dump of IOA failed. Dump table not valid: %d, %X.\n", |
| rc, be32_to_cpu(sdt->hdr.state)); |
| driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; |
| ioa_cfg->sdt_state = DUMP_OBTAINED; |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return; |
| } |
| |
| num_entries = be32_to_cpu(sdt->hdr.num_entries_used); |
| |
| if (num_entries > IPR_NUM_SDT_ENTRIES) |
| num_entries = IPR_NUM_SDT_ENTRIES; |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| for (i = 0; i < num_entries; i++) { |
| if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { |
| driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; |
| break; |
| } |
| |
| if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { |
| sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); |
| start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; |
| end_off = be32_to_cpu(sdt->entry[i].end_offset); |
| |
| if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { |
| bytes_to_copy = end_off - start_off; |
| if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { |
| sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; |
| continue; |
| } |
| |
| /* Copy data from adapter to driver buffers */ |
| bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, |
| bytes_to_copy); |
| |
| ioa_dump->hdr.len += bytes_copied; |
| |
| if (bytes_copied != bytes_to_copy) { |
| driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; |
| break; |
| } |
| } |
| } |
| } |
| |
| dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); |
| |
| /* Update dump_header */ |
| driver_dump->hdr.len += ioa_dump->hdr.len; |
| wmb(); |
| ioa_cfg->sdt_state = DUMP_OBTAINED; |
| LEAVE; |
| } |
| |
| #else |
| #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) |
| #endif |
| |
| /** |
| * ipr_release_dump - Free adapter dump memory |
| * @kref: kref struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_release_dump(struct kref *kref) |
| { |
| struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); |
| struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; |
| unsigned long lock_flags = 0; |
| int i; |
| |
| ENTER; |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| ioa_cfg->dump = NULL; |
| ioa_cfg->sdt_state = INACTIVE; |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| for (i = 0; i < dump->ioa_dump.next_page_index; i++) |
| free_page((unsigned long) dump->ioa_dump.ioa_data[i]); |
| |
| kfree(dump); |
| LEAVE; |
| } |
| |
| /** |
| * ipr_worker_thread - Worker thread |
| * @data: ioa config struct |
| * |
| * Called at task level from a work thread. This function takes care |
| * of adding and removing device from the mid-layer as configuration |
| * changes are detected by the adapter. |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_worker_thread(void *data) |
| { |
| unsigned long lock_flags; |
| struct ipr_resource_entry *res; |
| struct scsi_device *sdev; |
| struct ipr_dump *dump; |
| struct ipr_ioa_cfg *ioa_cfg = data; |
| u8 bus, target, lun; |
| int did_work; |
| |
| ENTER; |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| if (ioa_cfg->sdt_state == GET_DUMP) { |
| dump = ioa_cfg->dump; |
| if (!dump) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return; |
| } |
| kref_get(&dump->kref); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| ipr_get_ioa_dump(ioa_cfg, dump); |
| kref_put(&dump->kref, ipr_release_dump); |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (ioa_cfg->sdt_state == DUMP_OBTAINED) |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return; |
| } |
| |
| restart: |
| do { |
| did_work = 0; |
| if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return; |
| } |
| |
| list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| if (res->del_from_ml && res->sdev) { |
| did_work = 1; |
| sdev = res->sdev; |
| if (!scsi_device_get(sdev)) { |
| res->sdev = NULL; |
| list_move_tail(&res->queue, &ioa_cfg->free_res_q); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| scsi_remove_device(sdev); |
| scsi_device_put(sdev); |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| } |
| break; |
| } |
| } |
| } while(did_work); |
| |
| list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| if (res->add_to_ml) { |
| bus = res->cfgte.res_addr.bus; |
| target = res->cfgte.res_addr.target; |
| lun = res->cfgte.res_addr.lun; |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| scsi_add_device(ioa_cfg->host, bus, target, lun); |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| goto restart; |
| } |
| } |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL); |
| LEAVE; |
| } |
| |
| #ifdef CONFIG_SCSI_IPR_TRACE |
| /** |
| * ipr_read_trace - Dump the adapter trace |
| * @kobj: kobject struct |
| * @buf: buffer |
| * @off: offset |
| * @count: buffer size |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, |
| loff_t off, size_t count) |
| { |
| struct class_device *cdev = container_of(kobj,struct class_device,kobj); |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags = 0; |
| int size = IPR_TRACE_SIZE; |
| char *src = (char *)ioa_cfg->trace; |
| |
| if (off > size) |
| return 0; |
| if (off + count > size) { |
| size -= off; |
| count = size; |
| } |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| memcpy(buf, &src[off], count); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return count; |
| } |
| |
| static struct bin_attribute ipr_trace_attr = { |
| .attr = { |
| .name = "trace", |
| .mode = S_IRUGO, |
| }, |
| .size = 0, |
| .read = ipr_read_trace, |
| }; |
| #endif |
| |
| static const struct { |
| enum ipr_cache_state state; |
| char *name; |
| } cache_state [] = { |
| { CACHE_NONE, "none" }, |
| { CACHE_DISABLED, "disabled" }, |
| { CACHE_ENABLED, "enabled" } |
| }; |
| |
| /** |
| * ipr_show_write_caching - Show the write caching attribute |
| * @class_dev: class device struct |
| * @buf: buffer |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags = 0; |
| int i, len = 0; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| for (i = 0; i < ARRAY_SIZE(cache_state); i++) { |
| if (cache_state[i].state == ioa_cfg->cache_state) { |
| len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); |
| break; |
| } |
| } |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return len; |
| } |
| |
| |
| /** |
| * ipr_store_write_caching - Enable/disable adapter write cache |
| * @class_dev: class_device struct |
| * @buf: buffer |
| * @count: buffer size |
| * |
| * This function will enable/disable adapter write cache. |
| * |
| * Return value: |
| * count on success / other on failure |
| **/ |
| static ssize_t ipr_store_write_caching(struct class_device *class_dev, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags = 0; |
| enum ipr_cache_state new_state = CACHE_INVALID; |
| int i; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| if (ioa_cfg->cache_state == CACHE_NONE) |
| return -EINVAL; |
| |
| for (i = 0; i < ARRAY_SIZE(cache_state); i++) { |
| if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { |
| new_state = cache_state[i].state; |
| break; |
| } |
| } |
| |
| if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) |
| return -EINVAL; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (ioa_cfg->cache_state == new_state) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return count; |
| } |
| |
| ioa_cfg->cache_state = new_state; |
| dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", |
| new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); |
| if (!ioa_cfg->in_reset_reload) |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| |
| return count; |
| } |
| |
| static struct class_device_attribute ipr_ioa_cache_attr = { |
| .attr = { |
| .name = "write_cache", |
| .mode = S_IRUGO | S_IWUSR, |
| }, |
| .show = ipr_show_write_caching, |
| .store = ipr_store_write_caching |
| }; |
| |
| /** |
| * ipr_show_fw_version - Show the firmware version |
| * @class_dev: class device struct |
| * @buf: buffer |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; |
| unsigned long lock_flags = 0; |
| int len; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", |
| ucode_vpd->major_release, ucode_vpd->card_type, |
| ucode_vpd->minor_release[0], |
| ucode_vpd->minor_release[1]); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return len; |
| } |
| |
| static struct class_device_attribute ipr_fw_version_attr = { |
| .attr = { |
| .name = "fw_version", |
| .mode = S_IRUGO, |
| }, |
| .show = ipr_show_fw_version, |
| }; |
| |
| /** |
| * ipr_show_log_level - Show the adapter's error logging level |
| * @class_dev: class device struct |
| * @buf: buffer |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags = 0; |
| int len; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return len; |
| } |
| |
| /** |
| * ipr_store_log_level - Change the adapter's error logging level |
| * @class_dev: class device struct |
| * @buf: buffer |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_store_log_level(struct class_device *class_dev, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags = 0; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return strlen(buf); |
| } |
| |
| static struct class_device_attribute ipr_log_level_attr = { |
| .attr = { |
| .name = "log_level", |
| .mode = S_IRUGO | S_IWUSR, |
| }, |
| .show = ipr_show_log_level, |
| .store = ipr_store_log_level |
| }; |
| |
| /** |
| * ipr_store_diagnostics - IOA Diagnostics interface |
| * @class_dev: class_device struct |
| * @buf: buffer |
| * @count: buffer size |
| * |
| * This function will reset the adapter and wait a reasonable |
| * amount of time for any errors that the adapter might log. |
| * |
| * Return value: |
| * count on success / other on failure |
| **/ |
| static ssize_t ipr_store_diagnostics(struct class_device *class_dev, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags = 0; |
| int rc = count; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| ioa_cfg->errors_logged = 0; |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| |
| if (ioa_cfg->in_reset_reload) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| |
| /* Wait for a second for any errors to be logged */ |
| msleep(1000); |
| } else { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return -EIO; |
| } |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) |
| rc = -EIO; |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| return rc; |
| } |
| |
| static struct class_device_attribute ipr_diagnostics_attr = { |
| .attr = { |
| .name = "run_diagnostics", |
| .mode = S_IWUSR, |
| }, |
| .store = ipr_store_diagnostics |
| }; |
| |
| /** |
| * ipr_show_adapter_state - Show the adapter's state |
| * @class_dev: class device struct |
| * @buf: buffer |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags = 0; |
| int len; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (ioa_cfg->ioa_is_dead) |
| len = snprintf(buf, PAGE_SIZE, "offline\n"); |
| else |
| len = snprintf(buf, PAGE_SIZE, "online\n"); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return len; |
| } |
| |
| /** |
| * ipr_store_adapter_state - Change adapter state |
| * @class_dev: class_device struct |
| * @buf: buffer |
| * @count: buffer size |
| * |
| * This function will change the adapter's state. |
| * |
| * Return value: |
| * count on success / other on failure |
| **/ |
| static ssize_t ipr_store_adapter_state(struct class_device *class_dev, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags; |
| int result = count; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { |
| ioa_cfg->ioa_is_dead = 0; |
| ioa_cfg->reset_retries = 0; |
| ioa_cfg->in_ioa_bringdown = 0; |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| } |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| |
| return result; |
| } |
| |
| static struct class_device_attribute ipr_ioa_state_attr = { |
| .attr = { |
| .name = "state", |
| .mode = S_IRUGO | S_IWUSR, |
| }, |
| .show = ipr_show_adapter_state, |
| .store = ipr_store_adapter_state |
| }; |
| |
| /** |
| * ipr_store_reset_adapter - Reset the adapter |
| * @class_dev: class_device struct |
| * @buf: buffer |
| * @count: buffer size |
| * |
| * This function will reset the adapter. |
| * |
| * Return value: |
| * count on success / other on failure |
| **/ |
| static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| unsigned long lock_flags; |
| int result = count; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (!ioa_cfg->in_reset_reload) |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| |
| return result; |
| } |
| |
| static struct class_device_attribute ipr_ioa_reset_attr = { |
| .attr = { |
| .name = "reset_host", |
| .mode = S_IWUSR, |
| }, |
| .store = ipr_store_reset_adapter |
| }; |
| |
| /** |
| * ipr_alloc_ucode_buffer - Allocates a microcode download buffer |
| * @buf_len: buffer length |
| * |
| * Allocates a DMA'able buffer in chunks and assembles a scatter/gather |
| * list to use for microcode download |
| * |
| * Return value: |
| * pointer to sglist / NULL on failure |
| **/ |
| static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) |
| { |
| int sg_size, order, bsize_elem, num_elem, i, j; |
| struct ipr_sglist *sglist; |
| struct scatterlist *scatterlist; |
| struct page *page; |
| |
| /* Get the minimum size per scatter/gather element */ |
| sg_size = buf_len / (IPR_MAX_SGLIST - 1); |
| |
| /* Get the actual size per element */ |
| order = get_order(sg_size); |
| |
| /* Determine the actual number of bytes per element */ |
| bsize_elem = PAGE_SIZE * (1 << order); |
| |
| /* Determine the actual number of sg entries needed */ |
| if (buf_len % bsize_elem) |
| num_elem = (buf_len / bsize_elem) + 1; |
| else |
| num_elem = buf_len / bsize_elem; |
| |
| /* Allocate a scatter/gather list for the DMA */ |
| sglist = kzalloc(sizeof(struct ipr_sglist) + |
| (sizeof(struct scatterlist) * (num_elem - 1)), |
| GFP_KERNEL); |
| |
| if (sglist == NULL) { |
| ipr_trace; |
| return NULL; |
| } |
| |
| scatterlist = sglist->scatterlist; |
| |
| sglist->order = order; |
| sglist->num_sg = num_elem; |
| |
| /* Allocate a bunch of sg elements */ |
| for (i = 0; i < num_elem; i++) { |
| page = alloc_pages(GFP_KERNEL, order); |
| if (!page) { |
| ipr_trace; |
| |
| /* Free up what we already allocated */ |
| for (j = i - 1; j >= 0; j--) |
| __free_pages(scatterlist[j].page, order); |
| kfree(sglist); |
| return NULL; |
| } |
| |
| scatterlist[i].page = page; |
| } |
| |
| return sglist; |
| } |
| |
| /** |
| * ipr_free_ucode_buffer - Frees a microcode download buffer |
| * @p_dnld: scatter/gather list pointer |
| * |
| * Free a DMA'able ucode download buffer previously allocated with |
| * ipr_alloc_ucode_buffer |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) |
| { |
| int i; |
| |
| for (i = 0; i < sglist->num_sg; i++) |
| __free_pages(sglist->scatterlist[i].page, sglist->order); |
| |
| kfree(sglist); |
| } |
| |
| /** |
| * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer |
| * @sglist: scatter/gather list pointer |
| * @buffer: buffer pointer |
| * @len: buffer length |
| * |
| * Copy a microcode image from a user buffer into a buffer allocated by |
| * ipr_alloc_ucode_buffer |
| * |
| * Return value: |
| * 0 on success / other on failure |
| **/ |
| static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, |
| u8 *buffer, u32 len) |
| { |
| int bsize_elem, i, result = 0; |
| struct scatterlist *scatterlist; |
| void *kaddr; |
| |
| /* Determine the actual number of bytes per element */ |
| bsize_elem = PAGE_SIZE * (1 << sglist->order); |
| |
| scatterlist = sglist->scatterlist; |
| |
| for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { |
| kaddr = kmap(scatterlist[i].page); |
| memcpy(kaddr, buffer, bsize_elem); |
| kunmap(scatterlist[i].page); |
| |
| scatterlist[i].length = bsize_elem; |
| |
| if (result != 0) { |
| ipr_trace; |
| return result; |
| } |
| } |
| |
| if (len % bsize_elem) { |
| kaddr = kmap(scatterlist[i].page); |
| memcpy(kaddr, buffer, len % bsize_elem); |
| kunmap(scatterlist[i].page); |
| |
| scatterlist[i].length = len % bsize_elem; |
| } |
| |
| sglist->buffer_len = len; |
| return result; |
| } |
| |
| /** |
| * ipr_build_ucode_ioadl - Build a microcode download IOADL |
| * @ipr_cmd: ipr command struct |
| * @sglist: scatter/gather list |
| * |
| * Builds a microcode download IOA data list (IOADL). |
| * |
| **/ |
| static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, |
| struct ipr_sglist *sglist) |
| { |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| struct scatterlist *scatterlist = sglist->scatterlist; |
| int i; |
| |
| ipr_cmd->dma_use_sg = sglist->num_dma_sg; |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); |
| ioarcb->write_ioadl_len = |
| cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); |
| |
| for (i = 0; i < ipr_cmd->dma_use_sg; i++) { |
| ioadl[i].flags_and_data_len = |
| cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); |
| ioadl[i].address = |
| cpu_to_be32(sg_dma_address(&scatterlist[i])); |
| } |
| |
| ioadl[i-1].flags_and_data_len |= |
| cpu_to_be32(IPR_IOADL_FLAGS_LAST); |
| } |
| |
| /** |
| * ipr_update_ioa_ucode - Update IOA's microcode |
| * @ioa_cfg: ioa config struct |
| * @sglist: scatter/gather list |
| * |
| * Initiate an adapter reset to update the IOA's microcode |
| * |
| * Return value: |
| * 0 on success / -EIO on failure |
| **/ |
| static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_sglist *sglist) |
| { |
| unsigned long lock_flags; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| if (ioa_cfg->ucode_sglist) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| dev_err(&ioa_cfg->pdev->dev, |
| "Microcode download already in progress\n"); |
| return -EIO; |
| } |
| |
| sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, |
| sglist->num_sg, DMA_TO_DEVICE); |
| |
| if (!sglist->num_dma_sg) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| dev_err(&ioa_cfg->pdev->dev, |
| "Failed to map microcode download buffer!\n"); |
| return -EIO; |
| } |
| |
| ioa_cfg->ucode_sglist = sglist; |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| ioa_cfg->ucode_sglist = NULL; |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return 0; |
| } |
| |
| /** |
| * ipr_store_update_fw - Update the firmware on the adapter |
| * @class_dev: class_device struct |
| * @buf: buffer |
| * @count: buffer size |
| * |
| * This function will update the firmware on the adapter. |
| * |
| * Return value: |
| * count on success / other on failure |
| **/ |
| static ssize_t ipr_store_update_fw(struct class_device *class_dev, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(class_dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| struct ipr_ucode_image_header *image_hdr; |
| const struct firmware *fw_entry; |
| struct ipr_sglist *sglist; |
| char fname[100]; |
| char *src; |
| int len, result, dnld_size; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| |
| len = snprintf(fname, 99, "%s", buf); |
| fname[len-1] = '\0'; |
| |
| if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { |
| dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); |
| return -EIO; |
| } |
| |
| image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; |
| |
| if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || |
| (ioa_cfg->vpd_cbs->page3_data.card_type && |
| ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { |
| dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); |
| release_firmware(fw_entry); |
| return -EINVAL; |
| } |
| |
| src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); |
| dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); |
| sglist = ipr_alloc_ucode_buffer(dnld_size); |
| |
| if (!sglist) { |
| dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); |
| release_firmware(fw_entry); |
| return -ENOMEM; |
| } |
| |
| result = ipr_copy_ucode_buffer(sglist, src, dnld_size); |
| |
| if (result) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "Microcode buffer copy to DMA buffer failed\n"); |
| goto out; |
| } |
| |
| result = ipr_update_ioa_ucode(ioa_cfg, sglist); |
| |
| if (!result) |
| result = count; |
| out: |
| ipr_free_ucode_buffer(sglist); |
| release_firmware(fw_entry); |
| return result; |
| } |
| |
| static struct class_device_attribute ipr_update_fw_attr = { |
| .attr = { |
| .name = "update_fw", |
| .mode = S_IWUSR, |
| }, |
| .store = ipr_store_update_fw |
| }; |
| |
| static struct class_device_attribute *ipr_ioa_attrs[] = { |
| &ipr_fw_version_attr, |
| &ipr_log_level_attr, |
| &ipr_diagnostics_attr, |
| &ipr_ioa_state_attr, |
| &ipr_ioa_reset_attr, |
| &ipr_update_fw_attr, |
| &ipr_ioa_cache_attr, |
| NULL, |
| }; |
| |
| #ifdef CONFIG_SCSI_IPR_DUMP |
| /** |
| * ipr_read_dump - Dump the adapter |
| * @kobj: kobject struct |
| * @buf: buffer |
| * @off: offset |
| * @count: buffer size |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, |
| loff_t off, size_t count) |
| { |
| struct class_device *cdev = container_of(kobj,struct class_device,kobj); |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| struct ipr_dump *dump; |
| unsigned long lock_flags = 0; |
| char *src; |
| int len; |
| size_t rc = count; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| dump = ioa_cfg->dump; |
| |
| if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return 0; |
| } |
| kref_get(&dump->kref); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| if (off > dump->driver_dump.hdr.len) { |
| kref_put(&dump->kref, ipr_release_dump); |
| return 0; |
| } |
| |
| if (off + count > dump->driver_dump.hdr.len) { |
| count = dump->driver_dump.hdr.len - off; |
| rc = count; |
| } |
| |
| if (count && off < sizeof(dump->driver_dump)) { |
| if (off + count > sizeof(dump->driver_dump)) |
| len = sizeof(dump->driver_dump) - off; |
| else |
| len = count; |
| src = (u8 *)&dump->driver_dump + off; |
| memcpy(buf, src, len); |
| buf += len; |
| off += len; |
| count -= len; |
| } |
| |
| off -= sizeof(dump->driver_dump); |
| |
| if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { |
| if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) |
| len = offsetof(struct ipr_ioa_dump, ioa_data) - off; |
| else |
| len = count; |
| src = (u8 *)&dump->ioa_dump + off; |
| memcpy(buf, src, len); |
| buf += len; |
| off += len; |
| count -= len; |
| } |
| |
| off -= offsetof(struct ipr_ioa_dump, ioa_data); |
| |
| while (count) { |
| if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) |
| len = PAGE_ALIGN(off) - off; |
| else |
| len = count; |
| src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; |
| src += off & ~PAGE_MASK; |
| memcpy(buf, src, len); |
| buf += len; |
| off += len; |
| count -= len; |
| } |
| |
| kref_put(&dump->kref, ipr_release_dump); |
| return rc; |
| } |
| |
| /** |
| * ipr_alloc_dump - Prepare for adapter dump |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * 0 on success / other on failure |
| **/ |
| static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| struct ipr_dump *dump; |
| unsigned long lock_flags = 0; |
| |
| ENTER; |
| dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); |
| |
| if (!dump) { |
| ipr_err("Dump memory allocation failed\n"); |
| return -ENOMEM; |
| } |
| |
| kref_init(&dump->kref); |
| dump->ioa_cfg = ioa_cfg; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| if (INACTIVE != ioa_cfg->sdt_state) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| kfree(dump); |
| return 0; |
| } |
| |
| ioa_cfg->dump = dump; |
| ioa_cfg->sdt_state = WAIT_FOR_DUMP; |
| if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { |
| ioa_cfg->dump_taken = 1; |
| schedule_work(&ioa_cfg->work_q); |
| } |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| LEAVE; |
| return 0; |
| } |
| |
| /** |
| * ipr_free_dump - Free adapter dump memory |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * 0 on success / other on failure |
| **/ |
| static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| struct ipr_dump *dump; |
| unsigned long lock_flags = 0; |
| |
| ENTER; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| dump = ioa_cfg->dump; |
| if (!dump) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return 0; |
| } |
| |
| ioa_cfg->dump = NULL; |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| kref_put(&dump->kref, ipr_release_dump); |
| |
| LEAVE; |
| return 0; |
| } |
| |
| /** |
| * ipr_write_dump - Setup dump state of adapter |
| * @kobj: kobject struct |
| * @buf: buffer |
| * @off: offset |
| * @count: buffer size |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, |
| loff_t off, size_t count) |
| { |
| struct class_device *cdev = container_of(kobj,struct class_device,kobj); |
| struct Scsi_Host *shost = class_to_shost(cdev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; |
| int rc; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| |
| if (buf[0] == '1') |
| rc = ipr_alloc_dump(ioa_cfg); |
| else if (buf[0] == '0') |
| rc = ipr_free_dump(ioa_cfg); |
| else |
| return -EINVAL; |
| |
| if (rc) |
| return rc; |
| else |
| return count; |
| } |
| |
| static struct bin_attribute ipr_dump_attr = { |
| .attr = { |
| .name = "dump", |
| .mode = S_IRUSR | S_IWUSR, |
| }, |
| .size = 0, |
| .read = ipr_read_dump, |
| .write = ipr_write_dump |
| }; |
| #else |
| static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; |
| #endif |
| |
| /** |
| * ipr_change_queue_depth - Change the device's queue depth |
| * @sdev: scsi device struct |
| * @qdepth: depth to set |
| * |
| * Return value: |
| * actual depth set |
| **/ |
| static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) |
| { |
| scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); |
| return sdev->queue_depth; |
| } |
| |
| /** |
| * ipr_change_queue_type - Change the device's queue type |
| * @dsev: scsi device struct |
| * @tag_type: type of tags to use |
| * |
| * Return value: |
| * actual queue type set |
| **/ |
| static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; |
| struct ipr_resource_entry *res; |
| unsigned long lock_flags = 0; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| res = (struct ipr_resource_entry *)sdev->hostdata; |
| |
| if (res) { |
| if (ipr_is_gscsi(res) && sdev->tagged_supported) { |
| /* |
| * We don't bother quiescing the device here since the |
| * adapter firmware does it for us. |
| */ |
| scsi_set_tag_type(sdev, tag_type); |
| |
| if (tag_type) |
| scsi_activate_tcq(sdev, sdev->queue_depth); |
| else |
| scsi_deactivate_tcq(sdev, sdev->queue_depth); |
| } else |
| tag_type = 0; |
| } else |
| tag_type = 0; |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return tag_type; |
| } |
| |
| /** |
| * ipr_show_adapter_handle - Show the adapter's resource handle for this device |
| * @dev: device struct |
| * @buf: buffer |
| * |
| * Return value: |
| * number of bytes printed to buffer |
| **/ |
| static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct scsi_device *sdev = to_scsi_device(dev); |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; |
| struct ipr_resource_entry *res; |
| unsigned long lock_flags = 0; |
| ssize_t len = -ENXIO; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| res = (struct ipr_resource_entry *)sdev->hostdata; |
| if (res) |
| len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return len; |
| } |
| |
| static struct device_attribute ipr_adapter_handle_attr = { |
| .attr = { |
| .name = "adapter_handle", |
| .mode = S_IRUSR, |
| }, |
| .show = ipr_show_adapter_handle |
| }; |
| |
| static struct device_attribute *ipr_dev_attrs[] = { |
| &ipr_adapter_handle_attr, |
| NULL, |
| }; |
| |
| /** |
| * ipr_biosparam - Return the HSC mapping |
| * @sdev: scsi device struct |
| * @block_device: block device pointer |
| * @capacity: capacity of the device |
| * @parm: Array containing returned HSC values. |
| * |
| * This function generates the HSC parms that fdisk uses. |
| * We want to make sure we return something that places partitions |
| * on 4k boundaries for best performance with the IOA. |
| * |
| * Return value: |
| * 0 on success |
| **/ |
| static int ipr_biosparam(struct scsi_device *sdev, |
| struct block_device *block_device, |
| sector_t capacity, int *parm) |
| { |
| int heads, sectors; |
| sector_t cylinders; |
| |
| heads = 128; |
| sectors = 32; |
| |
| cylinders = capacity; |
| sector_div(cylinders, (128 * 32)); |
| |
| /* return result */ |
| parm[0] = heads; |
| parm[1] = sectors; |
| parm[2] = cylinders; |
| |
| return 0; |
| } |
| |
| /** |
| * ipr_slave_destroy - Unconfigure a SCSI device |
| * @sdev: scsi device struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_slave_destroy(struct scsi_device *sdev) |
| { |
| struct ipr_resource_entry *res; |
| struct ipr_ioa_cfg *ioa_cfg; |
| unsigned long lock_flags = 0; |
| |
| ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| res = (struct ipr_resource_entry *) sdev->hostdata; |
| if (res) { |
| sdev->hostdata = NULL; |
| res->sdev = NULL; |
| } |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| } |
| |
| /** |
| * ipr_slave_configure - Configure a SCSI device |
| * @sdev: scsi device struct |
| * |
| * This function configures the specified scsi device. |
| * |
| * Return value: |
| * 0 on success |
| **/ |
| static int ipr_slave_configure(struct scsi_device *sdev) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; |
| struct ipr_resource_entry *res; |
| unsigned long lock_flags = 0; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| res = sdev->hostdata; |
| if (res) { |
| if (ipr_is_af_dasd_device(res)) |
| sdev->type = TYPE_RAID; |
| if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { |
| sdev->scsi_level = 4; |
| sdev->no_uld_attach = 1; |
| } |
| if (ipr_is_vset_device(res)) { |
| sdev->timeout = IPR_VSET_RW_TIMEOUT; |
| blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); |
| } |
| if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data)) |
| sdev->allow_restart = 1; |
| scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); |
| } |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return 0; |
| } |
| |
| /** |
| * ipr_slave_alloc - Prepare for commands to a device. |
| * @sdev: scsi device struct |
| * |
| * This function saves a pointer to the resource entry |
| * in the scsi device struct if the device exists. We |
| * can then use this pointer in ipr_queuecommand when |
| * handling new commands. |
| * |
| * Return value: |
| * 0 on success / -ENXIO if device does not exist |
| **/ |
| static int ipr_slave_alloc(struct scsi_device *sdev) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; |
| struct ipr_resource_entry *res; |
| unsigned long lock_flags; |
| int rc = -ENXIO; |
| |
| sdev->hostdata = NULL; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| if ((res->cfgte.res_addr.bus == sdev->channel) && |
| (res->cfgte.res_addr.target == sdev->id) && |
| (res->cfgte.res_addr.lun == sdev->lun)) { |
| res->sdev = sdev; |
| res->add_to_ml = 0; |
| res->in_erp = 0; |
| sdev->hostdata = res; |
| if (!ipr_is_naca_model(res)) |
| res->needs_sync_complete = 1; |
| rc = 0; |
| break; |
| } |
| } |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| |
| return rc; |
| } |
| |
| /** |
| * ipr_eh_host_reset - Reset the host adapter |
| * @scsi_cmd: scsi command struct |
| * |
| * Return value: |
| * SUCCESS / FAILED |
| **/ |
| static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg; |
| int rc; |
| |
| ENTER; |
| ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; |
| |
| dev_err(&ioa_cfg->pdev->dev, |
| "Adapter being reset as a result of error recovery.\n"); |
| |
| if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| ioa_cfg->sdt_state = GET_DUMP; |
| |
| rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); |
| |
| LEAVE; |
| return rc; |
| } |
| |
| static int ipr_eh_host_reset(struct scsi_cmnd * cmd) |
| { |
| int rc; |
| |
| spin_lock_irq(cmd->device->host->host_lock); |
| rc = __ipr_eh_host_reset(cmd); |
| spin_unlock_irq(cmd->device->host->host_lock); |
| |
| return rc; |
| } |
| |
| /** |
| * ipr_eh_dev_reset - Reset the device |
| * @scsi_cmd: scsi command struct |
| * |
| * This function issues a device reset to the affected device. |
| * A LUN reset will be sent to the device first. If that does |
| * not work, a target reset will be sent. |
| * |
| * Return value: |
| * SUCCESS / FAILED |
| **/ |
| static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) |
| { |
| struct ipr_cmnd *ipr_cmd; |
| struct ipr_ioa_cfg *ioa_cfg; |
| struct ipr_resource_entry *res; |
| struct ipr_cmd_pkt *cmd_pkt; |
| u32 ioasc; |
| |
| ENTER; |
| ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; |
| res = scsi_cmd->device->hostdata; |
| |
| if (!res) |
| return FAILED; |
| |
| /* |
| * If we are currently going through reset/reload, return failed. This will force the |
| * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the |
| * reset to complete |
| */ |
| if (ioa_cfg->in_reset_reload) |
| return FAILED; |
| if (ioa_cfg->ioa_is_dead) |
| return FAILED; |
| |
| list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { |
| if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { |
| if (ipr_cmd->scsi_cmd) |
| ipr_cmd->done = ipr_scsi_eh_done; |
| } |
| } |
| |
| res->resetting_device = 1; |
| |
| ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| |
| ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; |
| cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| cmd_pkt->cdb[0] = IPR_RESET_DEVICE; |
| |
| ipr_sdev_err(scsi_cmd->device, "Resetting device\n"); |
| ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); |
| |
| ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| res->resetting_device = 0; |
| |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| |
| LEAVE; |
| return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); |
| } |
| |
| static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) |
| { |
| int rc; |
| |
| spin_lock_irq(cmd->device->host->host_lock); |
| rc = __ipr_eh_dev_reset(cmd); |
| spin_unlock_irq(cmd->device->host->host_lock); |
| |
| return rc; |
| } |
| |
| /** |
| * ipr_bus_reset_done - Op done function for bus reset. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is the op done function for a bus reset |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_resource_entry *res; |
| |
| ENTER; |
| list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, |
| sizeof(res->cfgte.res_handle))) { |
| scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); |
| break; |
| } |
| } |
| |
| /* |
| * If abort has not completed, indicate the reset has, else call the |
| * abort's done function to wake the sleeping eh thread |
| */ |
| if (ipr_cmd->sibling->sibling) |
| ipr_cmd->sibling->sibling = NULL; |
| else |
| ipr_cmd->sibling->done(ipr_cmd->sibling); |
| |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| LEAVE; |
| } |
| |
| /** |
| * ipr_abort_timeout - An abort task has timed out |
| * @ipr_cmd: ipr command struct |
| * |
| * This function handles when an abort task times out. If this |
| * happens we issue a bus reset since we have resources tied |
| * up that must be freed before returning to the midlayer. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_cmnd *reset_cmd; |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_cmd_pkt *cmd_pkt; |
| unsigned long lock_flags = 0; |
| |
| ENTER; |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return; |
| } |
| |
| ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n"); |
| reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| ipr_cmd->sibling = reset_cmd; |
| reset_cmd->sibling = ipr_cmd; |
| reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; |
| cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; |
| cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| cmd_pkt->cdb[0] = IPR_RESET_DEVICE; |
| cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; |
| |
| ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| LEAVE; |
| } |
| |
| /** |
| * ipr_cancel_op - Cancel specified op |
| * @scsi_cmd: scsi command struct |
| * |
| * This function cancels specified op. |
| * |
| * Return value: |
| * SUCCESS / FAILED |
| **/ |
| static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) |
| { |
| struct ipr_cmnd *ipr_cmd; |
| struct ipr_ioa_cfg *ioa_cfg; |
| struct ipr_resource_entry *res; |
| struct ipr_cmd_pkt *cmd_pkt; |
| u32 ioasc; |
| int op_found = 0; |
| |
| ENTER; |
| ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; |
| res = scsi_cmd->device->hostdata; |
| |
| /* If we are currently going through reset/reload, return failed. |
| * This will force the mid-layer to call ipr_eh_host_reset, |
| * which will then go to sleep and wait for the reset to complete |
| */ |
| if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) |
| return FAILED; |
| if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res))) |
| return FAILED; |
| |
| list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { |
| if (ipr_cmd->scsi_cmd == scsi_cmd) { |
| ipr_cmd->done = ipr_scsi_eh_done; |
| op_found = 1; |
| break; |
| } |
| } |
| |
| if (!op_found) |
| return SUCCESS; |
| |
| ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; |
| cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; |
| ipr_cmd->u.sdev = scsi_cmd->device; |
| |
| ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]); |
| ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); |
| ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| /* |
| * If the abort task timed out and we sent a bus reset, we will get |
| * one the following responses to the abort |
| */ |
| if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { |
| ioasc = 0; |
| ipr_trace; |
| } |
| |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| if (!ipr_is_naca_model(res)) |
| res->needs_sync_complete = 1; |
| |
| LEAVE; |
| return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); |
| } |
| |
| /** |
| * ipr_eh_abort - Abort a single op |
| * @scsi_cmd: scsi command struct |
| * |
| * Return value: |
| * SUCCESS / FAILED |
| **/ |
| static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) |
| { |
| unsigned long flags; |
| int rc; |
| |
| ENTER; |
| |
| spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); |
| rc = ipr_cancel_op(scsi_cmd); |
| spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); |
| |
| LEAVE; |
| return rc; |
| } |
| |
| /** |
| * ipr_handle_other_interrupt - Handle "other" interrupts |
| * @ioa_cfg: ioa config struct |
| * @int_reg: interrupt register |
| * |
| * Return value: |
| * IRQ_NONE / IRQ_HANDLED |
| **/ |
| static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, |
| volatile u32 int_reg) |
| { |
| irqreturn_t rc = IRQ_HANDLED; |
| |
| if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { |
| /* Mask the interrupt */ |
| writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); |
| |
| /* Clear the interrupt */ |
| writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); |
| int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| |
| list_del(&ioa_cfg->reset_cmd->queue); |
| del_timer(&ioa_cfg->reset_cmd->timer); |
| ipr_reset_ioa_job(ioa_cfg->reset_cmd); |
| } else { |
| if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) |
| ioa_cfg->ioa_unit_checked = 1; |
| else |
| dev_err(&ioa_cfg->pdev->dev, |
| "Permanent IOA failure. 0x%08X\n", int_reg); |
| |
| if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| ioa_cfg->sdt_state = GET_DUMP; |
| |
| ipr_mask_and_clear_interrupts(ioa_cfg, ~0); |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| } |
| |
| return rc; |
| } |
| |
| /** |
| * ipr_isr - Interrupt service routine |
| * @irq: irq number |
| * @devp: pointer to ioa config struct |
| * @regs: pt_regs struct |
| * |
| * Return value: |
| * IRQ_NONE / IRQ_HANDLED |
| **/ |
| static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; |
| unsigned long lock_flags = 0; |
| volatile u32 int_reg, int_mask_reg; |
| u32 ioasc; |
| u16 cmd_index; |
| struct ipr_cmnd *ipr_cmd; |
| irqreturn_t rc = IRQ_NONE; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| /* If interrupts are disabled, ignore the interrupt */ |
| if (!ioa_cfg->allow_interrupts) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return IRQ_NONE; |
| } |
| |
| int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); |
| int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; |
| |
| /* If an interrupt on the adapter did not occur, ignore it */ |
| if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return IRQ_NONE; |
| } |
| |
| while (1) { |
| ipr_cmd = NULL; |
| |
| while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == |
| ioa_cfg->toggle_bit) { |
| |
| cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & |
| IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; |
| |
| if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { |
| ioa_cfg->errors_logged++; |
| dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); |
| |
| if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) |
| ioa_cfg->sdt_state = GET_DUMP; |
| |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return IRQ_HANDLED; |
| } |
| |
| ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; |
| |
| ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); |
| |
| list_del(&ipr_cmd->queue); |
| del_timer(&ipr_cmd->timer); |
| ipr_cmd->done(ipr_cmd); |
| |
| rc = IRQ_HANDLED; |
| |
| if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { |
| ioa_cfg->hrrq_curr++; |
| } else { |
| ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; |
| ioa_cfg->toggle_bit ^= 1u; |
| } |
| } |
| |
| if (ipr_cmd != NULL) { |
| /* Clear the PCI interrupt */ |
| writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); |
| int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; |
| } else |
| break; |
| } |
| |
| if (unlikely(rc == IRQ_NONE)) |
| rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| return rc; |
| } |
| |
| /** |
| * ipr_build_ioadl - Build a scatter/gather list and map the buffer |
| * @ioa_cfg: ioa config struct |
| * @ipr_cmd: ipr command struct |
| * |
| * Return value: |
| * 0 on success / -1 on failure |
| **/ |
| static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_cmnd *ipr_cmd) |
| { |
| int i; |
| struct scatterlist *sglist; |
| u32 length; |
| u32 ioadl_flags = 0; |
| struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| |
| length = scsi_cmd->request_bufflen; |
| |
| if (length == 0) |
| return 0; |
| |
| if (scsi_cmd->use_sg) { |
| ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, |
| scsi_cmd->request_buffer, |
| scsi_cmd->use_sg, |
| scsi_cmd->sc_data_direction); |
| |
| if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { |
| ioadl_flags = IPR_IOADL_FLAGS_WRITE; |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| ioarcb->write_data_transfer_length = cpu_to_be32(length); |
| ioarcb->write_ioadl_len = |
| cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); |
| } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { |
| ioadl_flags = IPR_IOADL_FLAGS_READ; |
| ioarcb->read_data_transfer_length = cpu_to_be32(length); |
| ioarcb->read_ioadl_len = |
| cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); |
| } |
| |
| sglist = scsi_cmd->request_buffer; |
| |
| for (i = 0; i < ipr_cmd->dma_use_sg; i++) { |
| ioadl[i].flags_and_data_len = |
| cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); |
| ioadl[i].address = |
| cpu_to_be32(sg_dma_address(&sglist[i])); |
| } |
| |
| if (likely(ipr_cmd->dma_use_sg)) { |
| ioadl[i-1].flags_and_data_len |= |
| cpu_to_be32(IPR_IOADL_FLAGS_LAST); |
| return 0; |
| } else |
| dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); |
| } else { |
| if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { |
| ioadl_flags = IPR_IOADL_FLAGS_WRITE; |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| ioarcb->write_data_transfer_length = cpu_to_be32(length); |
| ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { |
| ioadl_flags = IPR_IOADL_FLAGS_READ; |
| ioarcb->read_data_transfer_length = cpu_to_be32(length); |
| ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| } |
| |
| ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, |
| scsi_cmd->request_buffer, length, |
| scsi_cmd->sc_data_direction); |
| |
| if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { |
| ipr_cmd->dma_use_sg = 1; |
| ioadl[0].flags_and_data_len = |
| cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); |
| ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); |
| return 0; |
| } else |
| dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); |
| } |
| |
| return -1; |
| } |
| |
| /** |
| * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes |
| * @scsi_cmd: scsi command struct |
| * |
| * Return value: |
| * task attributes |
| **/ |
| static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) |
| { |
| u8 tag[2]; |
| u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; |
| |
| if (scsi_populate_tag_msg(scsi_cmd, tag)) { |
| switch (tag[0]) { |
| case MSG_SIMPLE_TAG: |
| rc = IPR_FLAGS_LO_SIMPLE_TASK; |
| break; |
| case MSG_HEAD_TAG: |
| rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; |
| break; |
| case MSG_ORDERED_TAG: |
| rc = IPR_FLAGS_LO_ORDERED_TASK; |
| break; |
| }; |
| } |
| |
| return rc; |
| } |
| |
| /** |
| * ipr_erp_done - Process completion of ERP for a device |
| * @ipr_cmd: ipr command struct |
| * |
| * This function copies the sense buffer into the scsi_cmd |
| * struct and pushes the scsi_done function. |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| struct ipr_resource_entry *res = scsi_cmd->device->hostdata; |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { |
| scsi_cmd->result |= (DID_ERROR << 16); |
| ipr_sdev_err(scsi_cmd->device, |
| "Request Sense failed with IOASC: 0x%08X\n", ioasc); |
| } else { |
| memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, |
| SCSI_SENSE_BUFFERSIZE); |
| } |
| |
| if (res) { |
| if (!ipr_is_naca_model(res)) |
| res->needs_sync_complete = 1; |
| res->in_erp = 0; |
| } |
| ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| scsi_cmd->scsi_done(scsi_cmd); |
| } |
| |
| /** |
| * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP |
| * @ipr_cmd: ipr command struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioarcb *ioarcb; |
| struct ipr_ioasa *ioasa; |
| |
| ioarcb = &ipr_cmd->ioarcb; |
| ioasa = &ipr_cmd->ioasa; |
| |
| memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); |
| ioarcb->write_data_transfer_length = 0; |
| ioarcb->read_data_transfer_length = 0; |
| ioarcb->write_ioadl_len = 0; |
| ioarcb->read_ioadl_len = 0; |
| ioasa->ioasc = 0; |
| ioasa->residual_data_len = 0; |
| } |
| |
| /** |
| * ipr_erp_request_sense - Send request sense to a device |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sends a request sense to a device as a result |
| * of a check condition. |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { |
| ipr_erp_done(ipr_cmd); |
| return; |
| } |
| |
| ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); |
| |
| cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; |
| cmd_pkt->cdb[0] = REQUEST_SENSE; |
| cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
| cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; |
| cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; |
| cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); |
| |
| ipr_cmd->ioadl[0].flags_and_data_len = |
| cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); |
| ipr_cmd->ioadl[0].address = |
| cpu_to_be32(ipr_cmd->sense_buffer_dma); |
| |
| ipr_cmd->ioarcb.read_ioadl_len = |
| cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| ipr_cmd->ioarcb.read_data_transfer_length = |
| cpu_to_be32(SCSI_SENSE_BUFFERSIZE); |
| |
| ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, |
| IPR_REQUEST_SENSE_TIMEOUT * 2); |
| } |
| |
| /** |
| * ipr_erp_cancel_all - Send cancel all to a device |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sends a cancel all to a device to clear the |
| * queue. If we are running TCQ on the device, QERR is set to 1, |
| * which means all outstanding ops have been dropped on the floor. |
| * Cancel all will return them to us. |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) |
| { |
| struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| struct ipr_resource_entry *res = scsi_cmd->device->hostdata; |
| struct ipr_cmd_pkt *cmd_pkt; |
| |
| res->in_erp = 1; |
| |
| ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); |
| |
| if (!scsi_get_tag_type(scsi_cmd->device)) { |
| ipr_erp_request_sense(ipr_cmd); |
| return; |
| } |
| |
| cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; |
| cmd_pkt->request_type = IPR_RQTYPE_IOACMD; |
| cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; |
| |
| ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, |
| IPR_CANCEL_ALL_TIMEOUT); |
| } |
| |
| /** |
| * ipr_dump_ioasa - Dump contents of IOASA |
| * @ioa_cfg: ioa config struct |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is invoked by the interrupt handler when ops |
| * fail. It will log the IOASA if appropriate. Only called |
| * for GPDD ops. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_cmnd *ipr_cmd) |
| { |
| int i; |
| u16 data_len; |
| u32 ioasc; |
| struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; |
| __be32 *ioasa_data = (__be32 *)ioasa; |
| int error_index; |
| |
| ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; |
| |
| if (0 == ioasc) |
| return; |
| |
| if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) |
| return; |
| |
| error_index = ipr_get_error(ioasc); |
| |
| if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { |
| /* Don't log an error if the IOA already logged one */ |
| if (ioasa->ilid != 0) |
| return; |
| |
| if (ipr_error_table[error_index].log_ioasa == 0) |
| return; |
| } |
| |
| ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n", |
| ipr_error_table[error_index].error); |
| |
| if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) && |
| (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) { |
| ipr_sdev_err(ipr_cmd->scsi_cmd->device, |
| "Device End state: %s Phase: %s\n", |
| ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state], |
| ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]); |
| } |
| |
| if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) |
| data_len = sizeof(struct ipr_ioasa); |
| else |
| data_len = be16_to_cpu(ioasa->ret_stat_len); |
| |
| ipr_err("IOASA Dump:\n"); |
| |
| for (i = 0; i < data_len / 4; i += 4) { |
| ipr_err("%08X: %08X %08X %08X %08X\n", i*4, |
| be32_to_cpu(ioasa_data[i]), |
| be32_to_cpu(ioasa_data[i+1]), |
| be32_to_cpu(ioasa_data[i+2]), |
| be32_to_cpu(ioasa_data[i+3])); |
| } |
| } |
| |
| /** |
| * ipr_gen_sense - Generate SCSI sense data from an IOASA |
| * @ioasa: IOASA |
| * @sense_buf: sense data buffer |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) |
| { |
| u32 failing_lba; |
| u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; |
| struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; |
| struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; |
| u32 ioasc = be32_to_cpu(ioasa->ioasc); |
| |
| memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); |
| |
| if (ioasc >= IPR_FIRST_DRIVER_IOASC) |
| return; |
| |
| ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; |
| |
| if (ipr_is_vset_device(res) && |
| ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && |
| ioasa->u.vset.failing_lba_hi != 0) { |
| sense_buf[0] = 0x72; |
| sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); |
| sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); |
| sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); |
| |
| sense_buf[7] = 12; |
| sense_buf[8] = 0; |
| sense_buf[9] = 0x0A; |
| sense_buf[10] = 0x80; |
| |
| failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); |
| |
| sense_buf[12] = (failing_lba & 0xff000000) >> 24; |
| sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; |
| sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; |
| sense_buf[15] = failing_lba & 0x000000ff; |
| |
| failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); |
| |
| sense_buf[16] = (failing_lba & 0xff000000) >> 24; |
| sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; |
| sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; |
| sense_buf[19] = failing_lba & 0x000000ff; |
| } else { |
| sense_buf[0] = 0x70; |
| sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); |
| sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); |
| sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); |
| |
| /* Illegal request */ |
| if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && |
| (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { |
| sense_buf[7] = 10; /* additional length */ |
| |
| /* IOARCB was in error */ |
| if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) |
| sense_buf[15] = 0xC0; |
| else /* Parameter data was invalid */ |
| sense_buf[15] = 0x80; |
| |
| sense_buf[16] = |
| ((IPR_FIELD_POINTER_MASK & |
| be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; |
| sense_buf[17] = |
| (IPR_FIELD_POINTER_MASK & |
| be32_to_cpu(ioasa->ioasc_specific)) & 0xff; |
| } else { |
| if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { |
| if (ipr_is_vset_device(res)) |
| failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); |
| else |
| failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); |
| |
| sense_buf[0] |= 0x80; /* Or in the Valid bit */ |
| sense_buf[3] = (failing_lba & 0xff000000) >> 24; |
| sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; |
| sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; |
| sense_buf[6] = failing_lba & 0x000000ff; |
| } |
| |
| sense_buf[7] = 6; /* additional length */ |
| } |
| } |
| } |
| |
| /** |
| * ipr_get_autosense - Copy autosense data to sense buffer |
| * @ipr_cmd: ipr command struct |
| * |
| * This function copies the autosense buffer to the buffer |
| * in the scsi_cmd, if there is autosense available. |
| * |
| * Return value: |
| * 1 if autosense was available / 0 if not |
| **/ |
| static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; |
| |
| if ((be32_to_cpu(ioasa->ioasc_specific) & |
| (IPR_ADDITIONAL_STATUS_FMT | IPR_AUTOSENSE_VALID)) == 0) |
| return 0; |
| |
| memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, |
| min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), |
| SCSI_SENSE_BUFFERSIZE)); |
| return 1; |
| } |
| |
| /** |
| * ipr_erp_start - Process an error response for a SCSI op |
| * @ioa_cfg: ioa config struct |
| * @ipr_cmd: ipr command struct |
| * |
| * This function determines whether or not to initiate ERP |
| * on the affected device. |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_cmnd *ipr_cmd) |
| { |
| struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| struct ipr_resource_entry *res = scsi_cmd->device->hostdata; |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| if (!res) { |
| ipr_scsi_eh_done(ipr_cmd); |
| return; |
| } |
| |
| if (ipr_is_gscsi(res)) |
| ipr_dump_ioasa(ioa_cfg, ipr_cmd); |
| else |
| ipr_gen_sense(ipr_cmd); |
| |
| switch (ioasc & IPR_IOASC_IOASC_MASK) { |
| case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: |
| if (ipr_is_naca_model(res)) |
| scsi_cmd->result |= (DID_ABORT << 16); |
| else |
| scsi_cmd->result |= (DID_IMM_RETRY << 16); |
| break; |
| case IPR_IOASC_IR_RESOURCE_HANDLE: |
| case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: |
| scsi_cmd->result |= (DID_NO_CONNECT << 16); |
| break; |
| case IPR_IOASC_HW_SEL_TIMEOUT: |
| scsi_cmd->result |= (DID_NO_CONNECT << 16); |
| if (!ipr_is_naca_model(res)) |
| res->needs_sync_complete = 1; |
| break; |
| case IPR_IOASC_SYNC_REQUIRED: |
| if (!res->in_erp) |
| res->needs_sync_complete = 1; |
| scsi_cmd->result |= (DID_IMM_RETRY << 16); |
| break; |
| case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ |
| case IPR_IOASA_IR_DUAL_IOA_DISABLED: |
| scsi_cmd->result |= (DID_PASSTHROUGH << 16); |
| break; |
| case IPR_IOASC_BUS_WAS_RESET: |
| case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: |
| /* |
| * Report the bus reset and ask for a retry. The device |
| * will give CC/UA the next command. |
| */ |
| if (!res->resetting_device) |
| scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); |
| scsi_cmd->result |= (DID_ERROR << 16); |
| if (!ipr_is_naca_model(res)) |
| res->needs_sync_complete = 1; |
| break; |
| case IPR_IOASC_HW_DEV_BUS_STATUS: |
| scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); |
| if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { |
| if (!ipr_get_autosense(ipr_cmd)) { |
| if (!ipr_is_naca_model(res)) { |
| ipr_erp_cancel_all(ipr_cmd); |
| return; |
| } |
| } |
| } |
| if (!ipr_is_naca_model(res)) |
| res->needs_sync_complete = 1; |
| break; |
| case IPR_IOASC_NR_INIT_CMD_REQUIRED: |
| break; |
| default: |
| scsi_cmd->result |= (DID_ERROR << 16); |
| if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) |
| res->needs_sync_complete = 1; |
| break; |
| } |
| |
| ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| scsi_cmd->scsi_done(scsi_cmd); |
| } |
| |
| /** |
| * ipr_scsi_done - mid-layer done function |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is invoked by the interrupt handler for |
| * ops generated by the SCSI mid-layer |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); |
| |
| if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { |
| ipr_unmap_sglist(ioa_cfg, ipr_cmd); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| scsi_cmd->scsi_done(scsi_cmd); |
| } else |
| ipr_erp_start(ioa_cfg, ipr_cmd); |
| } |
| |
| /** |
| * ipr_save_ioafp_mode_select - Save adapters mode select data |
| * @ioa_cfg: ioa config struct |
| * @scsi_cmd: scsi command struct |
| * |
| * This function saves mode select data for the adapter to |
| * use following an adapter reset. |
| * |
| * Return value: |
| * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure |
| **/ |
| static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg, |
| struct scsi_cmnd *scsi_cmd) |
| { |
| if (!ioa_cfg->saved_mode_pages) { |
| ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages), |
| GFP_ATOMIC); |
| if (!ioa_cfg->saved_mode_pages) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "IOA mode select buffer allocation failed\n"); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| } |
| |
| memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]); |
| ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4]; |
| return 0; |
| } |
| |
| /** |
| * ipr_queuecommand - Queue a mid-layer request |
| * @scsi_cmd: scsi command struct |
| * @done: done function |
| * |
| * This function queues a request generated by the mid-layer. |
| * |
| * Return value: |
| * 0 on success |
| * SCSI_MLQUEUE_DEVICE_BUSY if device is busy |
| * SCSI_MLQUEUE_HOST_BUSY if host is busy |
| **/ |
| static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, |
| void (*done) (struct scsi_cmnd *)) |
| { |
| struct ipr_ioa_cfg *ioa_cfg; |
| struct ipr_resource_entry *res; |
| struct ipr_ioarcb *ioarcb; |
| struct ipr_cmnd *ipr_cmd; |
| int rc = 0; |
| |
| scsi_cmd->scsi_done = done; |
| ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; |
| res = scsi_cmd->device->hostdata; |
| scsi_cmd->result = (DID_OK << 16); |
| |
| /* |
| * We are currently blocking all devices due to a host reset |
| * We have told the host to stop giving us new requests, but |
| * ERP ops don't count. FIXME |
| */ |
| if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) |
| return SCSI_MLQUEUE_HOST_BUSY; |
| |
| /* |
| * FIXME - Create scsi_set_host_offline interface |
| * and the ioa_is_dead check can be removed |
| */ |
| if (unlikely(ioa_cfg->ioa_is_dead || !res)) { |
| memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
| scsi_cmd->result = (DID_NO_CONNECT << 16); |
| scsi_cmd->scsi_done(scsi_cmd); |
| return 0; |
| } |
| |
| ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| ioarcb = &ipr_cmd->ioarcb; |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| |
| memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); |
| ipr_cmd->scsi_cmd = scsi_cmd; |
| ioarcb->res_handle = res->cfgte.res_handle; |
| ipr_cmd->done = ipr_scsi_done; |
| ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); |
| |
| if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { |
| if (scsi_cmd->underflow == 0) |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; |
| |
| if (res->needs_sync_complete) { |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; |
| res->needs_sync_complete = 0; |
| } |
| |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; |
| ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; |
| ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; |
| ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); |
| } |
| |
| if (scsi_cmd->cmnd[0] >= 0xC0 && |
| (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| |
| if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT) |
| rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd); |
| |
| if (likely(rc == 0)) |
| rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); |
| |
| if (likely(rc == 0)) { |
| mb(); |
| writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), |
| ioa_cfg->regs.ioarrin_reg); |
| } else { |
| list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ipr_info - Get information about the card/driver |
| * @scsi_host: scsi host struct |
| * |
| * Return value: |
| * pointer to buffer with description string |
| **/ |
| static const char * ipr_ioa_info(struct Scsi_Host *host) |
| { |
| static char buffer[512]; |
| struct ipr_ioa_cfg *ioa_cfg; |
| unsigned long lock_flags = 0; |
| |
| ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; |
| |
| spin_lock_irqsave(host->host_lock, lock_flags); |
| sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); |
| spin_unlock_irqrestore(host->host_lock, lock_flags); |
| |
| return buffer; |
| } |
| |
| static struct scsi_host_template driver_template = { |
| .module = THIS_MODULE, |
| .name = "IPR", |
| .info = ipr_ioa_info, |
| .queuecommand = ipr_queuecommand, |
| .eh_abort_handler = ipr_eh_abort, |
| .eh_device_reset_handler = ipr_eh_dev_reset, |
| .eh_host_reset_handler = ipr_eh_host_reset, |
| .slave_alloc = ipr_slave_alloc, |
| .slave_configure = ipr_slave_configure, |
| .slave_destroy = ipr_slave_destroy, |
| .change_queue_depth = ipr_change_queue_depth, |
| .change_queue_type = ipr_change_queue_type, |
| .bios_param = ipr_biosparam, |
| .can_queue = IPR_MAX_COMMANDS, |
| .this_id = -1, |
| .sg_tablesize = IPR_MAX_SGLIST, |
| .max_sectors = IPR_IOA_MAX_SECTORS, |
| .cmd_per_lun = IPR_MAX_CMD_PER_LUN, |
| .use_clustering = ENABLE_CLUSTERING, |
| .shost_attrs = ipr_ioa_attrs, |
| .sdev_attrs = ipr_dev_attrs, |
| .proc_name = IPR_NAME |
| }; |
| |
| #ifdef CONFIG_PPC_PSERIES |
| static const u16 ipr_blocked_processors[] = { |
| PV_NORTHSTAR, |
| PV_PULSAR, |
| PV_POWER4, |
| PV_ICESTAR, |
| PV_SSTAR, |
| PV_POWER4p, |
| PV_630, |
| PV_630p |
| }; |
| |
| /** |
| * ipr_invalid_adapter - Determine if this adapter is supported on this hardware |
| * @ioa_cfg: ioa cfg struct |
| * |
| * Adapters that use Gemstone revision < 3.1 do not work reliably on |
| * certain pSeries hardware. This function determines if the given |
| * adapter is in one of these confgurations or not. |
| * |
| * Return value: |
| * 1 if adapter is not supported / 0 if adapter is supported |
| **/ |
| static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| u8 rev_id; |
| int i; |
| |
| if (ioa_cfg->type == 0x5702) { |
| if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, |
| &rev_id) == PCIBIOS_SUCCESSFUL) { |
| if (rev_id < 4) { |
| for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ |
| if (__is_processor(ipr_blocked_processors[i])) |
| return 1; |
| } |
| } |
| } |
| } |
| return 0; |
| } |
| #else |
| #define ipr_invalid_adapter(ioa_cfg) 0 |
| #endif |
| |
| /** |
| * ipr_ioa_bringdown_done - IOA bring down completion. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function processes the completion of an adapter bring down. |
| * It wakes any reset sleepers. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| ENTER; |
| ioa_cfg->in_reset_reload = 0; |
| ioa_cfg->reset_retries = 0; |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| wake_up_all(&ioa_cfg->reset_wait_q); |
| |
| spin_unlock_irq(ioa_cfg->host->host_lock); |
| scsi_unblock_requests(ioa_cfg->host); |
| spin_lock_irq(ioa_cfg->host->host_lock); |
| LEAVE; |
| |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_ioa_reset_done - IOA reset completion. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function processes the completion of an adapter reset. |
| * It schedules any necessary mid-layer add/removes and |
| * wakes any reset sleepers. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_resource_entry *res; |
| struct ipr_hostrcb *hostrcb, *temp; |
| int i = 0; |
| |
| ENTER; |
| ioa_cfg->in_reset_reload = 0; |
| ioa_cfg->allow_cmds = 1; |
| ioa_cfg->reset_cmd = NULL; |
| ioa_cfg->doorbell |= IPR_RUNTIME_RESET; |
| |
| list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { |
| if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { |
| ipr_trace; |
| break; |
| } |
| } |
| schedule_work(&ioa_cfg->work_q); |
| |
| list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { |
| list_del(&hostrcb->queue); |
| if (i++ < IPR_NUM_LOG_HCAMS) |
| ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); |
| else |
| ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); |
| } |
| |
| dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); |
| |
| ioa_cfg->reset_retries = 0; |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| wake_up_all(&ioa_cfg->reset_wait_q); |
| |
| spin_unlock_irq(ioa_cfg->host->host_lock); |
| scsi_unblock_requests(ioa_cfg->host); |
| spin_lock_irq(ioa_cfg->host->host_lock); |
| |
| if (!ioa_cfg->allow_cmds) |
| scsi_block_requests(ioa_cfg->host); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer |
| * @supported_dev: supported device struct |
| * @vpids: vendor product id struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, |
| struct ipr_std_inq_vpids *vpids) |
| { |
| memset(supported_dev, 0, sizeof(struct ipr_supported_device)); |
| memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); |
| supported_dev->num_records = 1; |
| supported_dev->data_length = |
| cpu_to_be16(sizeof(struct ipr_supported_device)); |
| supported_dev->reserved = 0; |
| } |
| |
| /** |
| * ipr_set_supported_devs - Send Set Supported Devices for a device |
| * @ipr_cmd: ipr command struct |
| * |
| * This function send a Set Supported Devices to the adapter |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; |
| struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| struct ipr_resource_entry *res = ipr_cmd->u.res; |
| |
| ipr_cmd->job_step = ipr_ioa_reset_done; |
| |
| list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { |
| if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data)) |
| continue; |
| |
| ipr_cmd->u.res = res; |
| ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); |
| |
| ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| |
| ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; |
| ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; |
| ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; |
| |
| ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | |
| sizeof(struct ipr_supported_device)); |
| ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + |
| offsetof(struct ipr_misc_cbs, supp_dev)); |
| ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| ioarcb->write_data_transfer_length = |
| cpu_to_be32(sizeof(struct ipr_supported_device)); |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, |
| IPR_SET_SUP_DEVICE_TIMEOUT); |
| |
| ipr_cmd->job_step = ipr_set_supported_devs; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| /** |
| * ipr_setup_write_cache - Disable write cache if needed |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sets up adapters write cache to desired setting |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| ipr_cmd->job_step = ipr_set_supported_devs; |
| ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, |
| struct ipr_resource_entry, queue); |
| |
| if (ioa_cfg->cache_state != CACHE_DISABLED) |
| return IPR_RC_JOB_CONTINUE; |
| |
| ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_get_mode_page - Locate specified mode page |
| * @mode_pages: mode page buffer |
| * @page_code: page code to find |
| * @len: minimum required length for mode page |
| * |
| * Return value: |
| * pointer to mode page / NULL on failure |
| **/ |
| static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, |
| u32 page_code, u32 len) |
| { |
| struct ipr_mode_page_hdr *mode_hdr; |
| u32 page_length; |
| u32 length; |
| |
| if (!mode_pages || (mode_pages->hdr.length == 0)) |
| return NULL; |
| |
| length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; |
| mode_hdr = (struct ipr_mode_page_hdr *) |
| (mode_pages->data + mode_pages->hdr.block_desc_len); |
| |
| while (length) { |
| if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { |
| if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) |
| return mode_hdr; |
| break; |
| } else { |
| page_length = (sizeof(struct ipr_mode_page_hdr) + |
| mode_hdr->page_length); |
| length -= page_length; |
| mode_hdr = (struct ipr_mode_page_hdr *) |
| ((unsigned long)mode_hdr + page_length); |
| } |
| } |
| return NULL; |
| } |
| |
| /** |
| * ipr_check_term_power - Check for term power errors |
| * @ioa_cfg: ioa config struct |
| * @mode_pages: IOAFP mode pages buffer |
| * |
| * Check the IOAFP's mode page 28 for term power errors |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_mode_pages *mode_pages) |
| { |
| int i; |
| int entry_length; |
| struct ipr_dev_bus_entry *bus; |
| struct ipr_mode_page28 *mode_page; |
| |
| mode_page = ipr_get_mode_page(mode_pages, 0x28, |
| sizeof(struct ipr_mode_page28)); |
| |
| entry_length = mode_page->entry_length; |
| |
| bus = mode_page->bus; |
| |
| for (i = 0; i < mode_page->num_entries; i++) { |
| if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "Term power is absent on scsi bus %d\n", |
| bus->res_addr.bus); |
| } |
| |
| bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); |
| } |
| } |
| |
| /** |
| * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table |
| * @ioa_cfg: ioa config struct |
| * |
| * Looks through the config table checking for SES devices. If |
| * the SES device is in the SES table indicating a maximum SCSI |
| * bus speed, the speed is limited for the bus. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| u32 max_xfer_rate; |
| int i; |
| |
| for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { |
| max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, |
| ioa_cfg->bus_attr[i].bus_width); |
| |
| if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) |
| ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; |
| } |
| } |
| |
| /** |
| * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 |
| * @ioa_cfg: ioa config struct |
| * @mode_pages: mode page 28 buffer |
| * |
| * Updates mode page 28 based on driver configuration |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, |
| struct ipr_mode_pages *mode_pages) |
| { |
| int i, entry_length; |
| struct ipr_dev_bus_entry *bus; |
| struct ipr_bus_attributes *bus_attr; |
| struct ipr_mode_page28 *mode_page; |
| |
| mode_page = ipr_get_mode_page(mode_pages, 0x28, |
| sizeof(struct ipr_mode_page28)); |
| |
| entry_length = mode_page->entry_length; |
| |
| /* Loop for each device bus entry */ |
| for (i = 0, bus = mode_page->bus; |
| i < mode_page->num_entries; |
| i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { |
| if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "Invalid resource address reported: 0x%08X\n", |
| IPR_GET_PHYS_LOC(bus->res_addr)); |
| continue; |
| } |
| |
| bus_attr = &ioa_cfg->bus_attr[i]; |
| bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; |
| bus->bus_width = bus_attr->bus_width; |
| bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); |
| bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; |
| if (bus_attr->qas_enabled) |
| bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; |
| else |
| bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; |
| } |
| } |
| |
| /** |
| * ipr_build_mode_select - Build a mode select command |
| * @ipr_cmd: ipr command struct |
| * @res_handle: resource handle to send command to |
| * @parm: Byte 2 of Mode Sense command |
| * @dma_addr: DMA buffer address |
| * @xfer_len: data transfer length |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, |
| __be32 res_handle, u8 parm, u32 dma_addr, |
| u8 xfer_len) |
| { |
| struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| |
| ioarcb->res_handle = res_handle; |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; |
| ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; |
| ioarcb->cmd_pkt.cdb[1] = parm; |
| ioarcb->cmd_pkt.cdb[4] = xfer_len; |
| |
| ioadl->flags_and_data_len = |
| cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); |
| ioadl->address = cpu_to_be32(dma_addr); |
| ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); |
| } |
| |
| /** |
| * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sets up the SCSI bus attributes and sends |
| * a Mode Select for Page 28 to activate them. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; |
| int length; |
| |
| ENTER; |
| if (ioa_cfg->saved_mode_pages) { |
| memcpy(mode_pages, ioa_cfg->saved_mode_pages, |
| ioa_cfg->saved_mode_page_len); |
| length = ioa_cfg->saved_mode_page_len; |
| } else { |
| ipr_scsi_bus_speed_limit(ioa_cfg); |
| ipr_check_term_power(ioa_cfg, mode_pages); |
| ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); |
| length = mode_pages->hdr.length + 1; |
| mode_pages->hdr.length = 0; |
| } |
| |
| ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, |
| ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), |
| length); |
| |
| ipr_cmd->job_step = ipr_setup_write_cache; |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_build_mode_sense - Builds a mode sense command |
| * @ipr_cmd: ipr command struct |
| * @res: resource entry struct |
| * @parm: Byte 2 of mode sense command |
| * @dma_addr: DMA address of mode sense buffer |
| * @xfer_len: Size of DMA buffer |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, |
| __be32 res_handle, |
| u8 parm, u32 dma_addr, u8 xfer_len) |
| { |
| struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| |
| ioarcb->res_handle = res_handle; |
| ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; |
| ioarcb->cmd_pkt.cdb[2] = parm; |
| ioarcb->cmd_pkt.cdb[4] = xfer_len; |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| |
| ioadl->flags_and_data_len = |
| cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); |
| ioadl->address = cpu_to_be32(dma_addr); |
| ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); |
| } |
| |
| /** |
| * ipr_reset_cmd_failed - Handle failure of IOA reset command |
| * @ipr_cmd: ipr command struct |
| * |
| * This function handles the failure of an IOA bringup command. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| dev_err(&ioa_cfg->pdev->dev, |
| "0x%02X failed with IOASC: 0x%08X\n", |
| ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); |
| |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense |
| * @ipr_cmd: ipr command struct |
| * |
| * This function handles the failure of a Mode Sense to the IOAFP. |
| * Some adapters do not handle all mode pages. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) |
| { |
| u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { |
| ipr_cmd->job_step = ipr_setup_write_cache; |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| return ipr_reset_cmd_failed(ipr_cmd); |
| } |
| |
| /** |
| * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA |
| * @ipr_cmd: ipr command struct |
| * |
| * This function send a Page 28 mode sense to the IOA to |
| * retrieve SCSI bus attributes. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| ENTER; |
| ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), |
| 0x28, ioa_cfg->vpd_cbs_dma + |
| offsetof(struct ipr_misc_cbs, mode_pages), |
| sizeof(struct ipr_mode_pages)); |
| |
| ipr_cmd->job_step = ipr_ioafp_mode_select_page28; |
| ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_init_res_table - Initialize the resource table |
| * @ipr_cmd: ipr command struct |
| * |
| * This function looks through the existing resource table, comparing |
| * it with the config table. This function will take care of old/new |
| * devices and schedule adding/removing them from the mid-layer |
| * as appropriate. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE |
| **/ |
| static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_resource_entry *res, *temp; |
| struct ipr_config_table_entry *cfgte; |
| int found, i; |
| LIST_HEAD(old_res); |
| |
| ENTER; |
| if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) |
| dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); |
| |
| list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) |
| list_move_tail(&res->queue, &old_res); |
| |
| for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { |
| cfgte = &ioa_cfg->cfg_table->dev[i]; |
| found = 0; |
| |
| list_for_each_entry_safe(res, temp, &old_res, queue) { |
| if (!memcmp(&res->cfgte.res_addr, |
| &cfgte->res_addr, sizeof(cfgte->res_addr))) { |
| list_move_tail(&res->queue, &ioa_cfg->used_res_q); |
| found = 1; |
| break; |
| } |
| } |
| |
| if (!found) { |
| if (list_empty(&ioa_cfg->free_res_q)) { |
| dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); |
| break; |
| } |
| |
| found = 1; |
| res = list_entry(ioa_cfg->free_res_q.next, |
| struct ipr_resource_entry, queue); |
| list_move_tail(&res->queue, &ioa_cfg->used_res_q); |
| ipr_init_res_entry(res); |
| res->add_to_ml = 1; |
| } |
| |
| if (found) |
| memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); |
| } |
| |
| list_for_each_entry_safe(res, temp, &old_res, queue) { |
| if (res->sdev) { |
| res->del_from_ml = 1; |
| res->sdev->hostdata = NULL; |
| list_move_tail(&res->queue, &ioa_cfg->used_res_q); |
| } else { |
| list_move_tail(&res->queue, &ioa_cfg->free_res_q); |
| } |
| } |
| |
| ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; |
| |
| LEAVE; |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| /** |
| * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sends a Query IOA Configuration command |
| * to the adapter to retrieve the IOA configuration table. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; |
| |
| ENTER; |
| dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", |
| ucode_vpd->major_release, ucode_vpd->card_type, |
| ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| |
| ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; |
| ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; |
| ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; |
| |
| ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| ioarcb->read_data_transfer_length = |
| cpu_to_be32(sizeof(struct ipr_config_table)); |
| |
| ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); |
| ioadl->flags_and_data_len = |
| cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); |
| |
| ipr_cmd->job_step = ipr_init_res_table; |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_ioafp_inquiry - Send an Inquiry to the adapter. |
| * @ipr_cmd: ipr command struct |
| * |
| * This utility function sends an inquiry to the adapter. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, |
| u32 dma_addr, u8 xfer_len) |
| { |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; |
| |
| ENTER; |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| |
| ioarcb->cmd_pkt.cdb[0] = INQUIRY; |
| ioarcb->cmd_pkt.cdb[1] = flags; |
| ioarcb->cmd_pkt.cdb[2] = page; |
| ioarcb->cmd_pkt.cdb[4] = xfer_len; |
| |
| ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); |
| ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); |
| |
| ioadl->address = cpu_to_be32(dma_addr); |
| ioadl->flags_and_data_len = |
| cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| LEAVE; |
| } |
| |
| /** |
| * ipr_inquiry_page_supported - Is the given inquiry page supported |
| * @page0: inquiry page 0 buffer |
| * @page: page code. |
| * |
| * This function determines if the specified inquiry page is supported. |
| * |
| * Return value: |
| * 1 if page is supported / 0 if not |
| **/ |
| static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) |
| { |
| int i; |
| |
| for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) |
| if (page0->page[i] == page) |
| return 1; |
| |
| return 0; |
| } |
| |
| /** |
| * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sends a Page 3 inquiry to the adapter |
| * to retrieve software VPD information. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; |
| |
| ENTER; |
| |
| if (!ipr_inquiry_page_supported(page0, 1)) |
| ioa_cfg->cache_state = CACHE_NONE; |
| |
| ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; |
| |
| ipr_ioafp_inquiry(ipr_cmd, 1, 3, |
| ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), |
| sizeof(struct ipr_inquiry_page3)); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sends a Page 0 inquiry to the adapter |
| * to retrieve supported inquiry pages. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| char type[5]; |
| |
| ENTER; |
| |
| /* Grab the type out of the VPD and store it away */ |
| memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); |
| type[4] = '\0'; |
| ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); |
| |
| ipr_cmd->job_step = ipr_ioafp_page3_inquiry; |
| |
| ipr_ioafp_inquiry(ipr_cmd, 1, 0, |
| ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), |
| sizeof(struct ipr_inquiry_page0)); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function sends a standard inquiry to the adapter. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| ENTER; |
| ipr_cmd->job_step = ipr_ioafp_page0_inquiry; |
| |
| ipr_ioafp_inquiry(ipr_cmd, 0, 0, |
| ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), |
| sizeof(struct ipr_ioa_vpd)); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function send an Identify Host Request Response Queue |
| * command to establish the HRRQ with the adapter. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; |
| |
| ENTER; |
| dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); |
| |
| ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; |
| ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| |
| ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| ioarcb->cmd_pkt.cdb[2] = |
| ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; |
| ioarcb->cmd_pkt.cdb[3] = |
| ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; |
| ioarcb->cmd_pkt.cdb[4] = |
| ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; |
| ioarcb->cmd_pkt.cdb[5] = |
| ((u32) ioa_cfg->host_rrq_dma) & 0xff; |
| ioarcb->cmd_pkt.cdb[7] = |
| ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; |
| ioarcb->cmd_pkt.cdb[8] = |
| (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; |
| |
| ipr_cmd->job_step = ipr_ioafp_std_inquiry; |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_reset_timer_done - Adapter reset timer function |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function is used in adapter reset processing |
| * for timing events. If the reset_cmd pointer in the IOA |
| * config struct is not this adapter's we are doing nested |
| * resets and fail_all_ops will take care of freeing the |
| * command block. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| unsigned long lock_flags = 0; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| |
| if (ioa_cfg->reset_cmd == ipr_cmd) { |
| list_del(&ipr_cmd->queue); |
| ipr_cmd->done(ipr_cmd); |
| } |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| } |
| |
| /** |
| * ipr_reset_start_timer - Start a timer for adapter reset job |
| * @ipr_cmd: ipr command struct |
| * @timeout: timeout value |
| * |
| * Description: This function is used in adapter reset processing |
| * for timing events. If the reset_cmd pointer in the IOA |
| * config struct is not this adapter's we are doing nested |
| * resets and fail_all_ops will take care of freeing the |
| * command block. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, |
| unsigned long timeout) |
| { |
| list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); |
| ipr_cmd->done = ipr_reset_ioa_job; |
| |
| ipr_cmd->timer.data = (unsigned long) ipr_cmd; |
| ipr_cmd->timer.expires = jiffies + timeout; |
| ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; |
| add_timer(&ipr_cmd->timer); |
| } |
| |
| /** |
| * ipr_init_ioa_mem - Initialize ioa_cfg control block |
| * @ioa_cfg: ioa cfg struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); |
| |
| /* Initialize Host RRQ pointers */ |
| ioa_cfg->hrrq_start = ioa_cfg->host_rrq; |
| ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; |
| ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; |
| ioa_cfg->toggle_bit = 1; |
| |
| /* Zero out config table */ |
| memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); |
| } |
| |
| /** |
| * ipr_reset_enable_ioa - Enable the IOA following a reset. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function reinitializes some control blocks and |
| * enables destructive diagnostics on the adapter. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| volatile u32 int_reg; |
| |
| ENTER; |
| ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; |
| ipr_init_ioa_mem(ioa_cfg); |
| |
| ioa_cfg->allow_interrupts = 1; |
| int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| |
| if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { |
| writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), |
| ioa_cfg->regs.clr_interrupt_mask_reg); |
| int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| /* Enable destructive diagnostics on IOA */ |
| writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); |
| |
| writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); |
| int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); |
| |
| dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); |
| |
| ipr_cmd->timer.data = (unsigned long) ipr_cmd; |
| ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ); |
| ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; |
| ipr_cmd->done = ipr_reset_ioa_job; |
| add_timer(&ipr_cmd->timer); |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_reset_wait_for_dump - Wait for a dump to timeout. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function is invoked when an adapter dump has run out |
| * of processing time. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE |
| **/ |
| static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| if (ioa_cfg->sdt_state == GET_DUMP) |
| ioa_cfg->sdt_state = ABORT_DUMP; |
| |
| ipr_cmd->job_step = ipr_reset_alert; |
| |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| /** |
| * ipr_unit_check_no_data - Log a unit check/no data error log |
| * @ioa_cfg: ioa config struct |
| * |
| * Logs an error indicating the adapter unit checked, but for some |
| * reason, we were unable to fetch the unit check buffer. |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| ioa_cfg->errors_logged++; |
| dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); |
| } |
| |
| /** |
| * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA |
| * @ioa_cfg: ioa config struct |
| * |
| * Fetches the unit check buffer from the adapter by clocking the data |
| * through the mailbox register. |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| unsigned long mailbox; |
| struct ipr_hostrcb *hostrcb; |
| struct ipr_uc_sdt sdt; |
| int rc, length; |
| |
| mailbox = readl(ioa_cfg->ioa_mailbox); |
| |
| if (!ipr_sdt_is_fmt2(mailbox)) { |
| ipr_unit_check_no_data(ioa_cfg); |
| return; |
| } |
| |
| memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); |
| rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, |
| (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); |
| |
| if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || |
| !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { |
| ipr_unit_check_no_data(ioa_cfg); |
| return; |
| } |
| |
| /* Find length of the first sdt entry (UC buffer) */ |
| length = (be32_to_cpu(sdt.entry[0].end_offset) - |
| be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; |
| |
| hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, |
| struct ipr_hostrcb, queue); |
| list_del(&hostrcb->queue); |
| memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); |
| |
| rc = ipr_get_ldump_data_section(ioa_cfg, |
| be32_to_cpu(sdt.entry[0].bar_str_offset), |
| (__be32 *)&hostrcb->hcam, |
| min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); |
| |
| if (!rc) |
| ipr_handle_log_data(ioa_cfg, hostrcb); |
| else |
| ipr_unit_check_no_data(ioa_cfg); |
| |
| list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); |
| } |
| |
| /** |
| * ipr_reset_restore_cfg_space - Restore PCI config space. |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function restores the saved PCI config space of |
| * the adapter, fails all outstanding ops back to the callers, and |
| * fetches the dump/unit check if applicable to this reset. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| int rc; |
| |
| ENTER; |
| pci_unblock_user_cfg_access(ioa_cfg->pdev); |
| rc = pci_restore_state(ioa_cfg->pdev); |
| |
| if (rc != PCIBIOS_SUCCESSFUL) { |
| ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| if (ipr_set_pcix_cmd_reg(ioa_cfg)) { |
| ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| ipr_fail_all_ops(ioa_cfg); |
| |
| if (ioa_cfg->ioa_unit_checked) { |
| ioa_cfg->ioa_unit_checked = 0; |
| ipr_get_unit_check_buffer(ioa_cfg); |
| ipr_cmd->job_step = ipr_reset_alert; |
| ipr_reset_start_timer(ipr_cmd, 0); |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| if (ioa_cfg->in_ioa_bringdown) { |
| ipr_cmd->job_step = ipr_ioa_bringdown_done; |
| } else { |
| ipr_cmd->job_step = ipr_reset_enable_ioa; |
| |
| if (GET_DUMP == ioa_cfg->sdt_state) { |
| ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); |
| ipr_cmd->job_step = ipr_reset_wait_for_dump; |
| schedule_work(&ioa_cfg->work_q); |
| return IPR_RC_JOB_RETURN; |
| } |
| } |
| |
| ENTER; |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| /** |
| * ipr_reset_start_bist - Run BIST on the adapter. |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function runs BIST on the adapter, then delays 2 seconds. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| int rc; |
| |
| ENTER; |
| pci_block_user_cfg_access(ioa_cfg->pdev); |
| rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); |
| |
| if (rc != PCIBIOS_SUCCESSFUL) { |
| ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); |
| rc = IPR_RC_JOB_CONTINUE; |
| } else { |
| ipr_cmd->job_step = ipr_reset_restore_cfg_space; |
| ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); |
| rc = IPR_RC_JOB_RETURN; |
| } |
| |
| LEAVE; |
| return rc; |
| } |
| |
| /** |
| * ipr_reset_allowed - Query whether or not IOA can be reset |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * 0 if reset not allowed / non-zero if reset is allowed |
| **/ |
| static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| volatile u32 temp_reg; |
| |
| temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); |
| return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); |
| } |
| |
| /** |
| * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function waits for adapter permission to run BIST, |
| * then runs BIST. If the adapter does not give permission after a |
| * reasonable time, we will reset the adapter anyway. The impact of |
| * resetting the adapter without warning the adapter is the risk of |
| * losing the persistent error log on the adapter. If the adapter is |
| * reset while it is writing to the flash on the adapter, the flash |
| * segment will have bad ECC and be zeroed. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| int rc = IPR_RC_JOB_RETURN; |
| |
| if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { |
| ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; |
| ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); |
| } else { |
| ipr_cmd->job_step = ipr_reset_start_bist; |
| rc = IPR_RC_JOB_CONTINUE; |
| } |
| |
| return rc; |
| } |
| |
| /** |
| * ipr_reset_alert_part2 - Alert the adapter of a pending reset |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function alerts the adapter that it will be reset. |
| * If memory space is not currently enabled, proceed directly |
| * to running BIST on the adapter. The timer must always be started |
| * so we guarantee we do not run BIST from ipr_isr. |
| * |
| * Return value: |
| * IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| u16 cmd_reg; |
| int rc; |
| |
| ENTER; |
| rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); |
| |
| if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { |
| ipr_mask_and_clear_interrupts(ioa_cfg, ~0); |
| writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); |
| ipr_cmd->job_step = ipr_reset_wait_to_start_bist; |
| } else { |
| ipr_cmd->job_step = ipr_reset_start_bist; |
| } |
| |
| ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; |
| ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_reset_ucode_download_done - Microcode download completion |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function unmaps the microcode download buffer. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE |
| **/ |
| static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; |
| |
| pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, |
| sglist->num_sg, DMA_TO_DEVICE); |
| |
| ipr_cmd->job_step = ipr_reset_alert; |
| return IPR_RC_JOB_CONTINUE; |
| } |
| |
| /** |
| * ipr_reset_ucode_download - Download microcode to the adapter |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function checks to see if it there is microcode |
| * to download to the adapter. If there is, a download is performed. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; |
| |
| ENTER; |
| ipr_cmd->job_step = ipr_reset_alert; |
| |
| if (!sglist) |
| return IPR_RC_JOB_CONTINUE; |
| |
| ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; |
| |
| ipr_build_ucode_ioadl(ipr_cmd, sglist); |
| ipr_cmd->job_step = ipr_reset_ucode_download_done; |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, |
| IPR_WRITE_BUFFER_TIMEOUT); |
| |
| LEAVE; |
| return IPR_RC_JOB_RETURN; |
| } |
| |
| /** |
| * ipr_reset_shutdown_ioa - Shutdown the adapter |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function issues an adapter shutdown of the |
| * specified type to the specified adapter as part of the |
| * adapter reset job. |
| * |
| * Return value: |
| * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN |
| **/ |
| static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; |
| unsigned long timeout; |
| int rc = IPR_RC_JOB_CONTINUE; |
| |
| ENTER; |
| if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { |
| ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); |
| ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; |
| ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; |
| |
| if (shutdown_type == IPR_SHUTDOWN_ABBREV) |
| timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; |
| else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) |
| timeout = IPR_INTERNAL_TIMEOUT; |
| else |
| timeout = IPR_SHUTDOWN_TIMEOUT; |
| |
| ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); |
| |
| rc = IPR_RC_JOB_RETURN; |
| ipr_cmd->job_step = ipr_reset_ucode_download; |
| } else |
| ipr_cmd->job_step = ipr_reset_alert; |
| |
| LEAVE; |
| return rc; |
| } |
| |
| /** |
| * ipr_reset_ioa_job - Adapter reset job |
| * @ipr_cmd: ipr command struct |
| * |
| * Description: This function is the job router for the adapter reset job. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) |
| { |
| u32 rc, ioasc; |
| struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; |
| |
| do { |
| ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); |
| |
| if (ioa_cfg->reset_cmd != ipr_cmd) { |
| /* |
| * We are doing nested adapter resets and this is |
| * not the current reset job. |
| */ |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| return; |
| } |
| |
| if (IPR_IOASC_SENSE_KEY(ioasc)) { |
| rc = ipr_cmd->job_step_failed(ipr_cmd); |
| if (rc == IPR_RC_JOB_RETURN) |
| return; |
| } |
| |
| ipr_reinit_ipr_cmnd(ipr_cmd); |
| ipr_cmd->job_step_failed = ipr_reset_cmd_failed; |
| rc = ipr_cmd->job_step(ipr_cmd); |
| } while(rc == IPR_RC_JOB_CONTINUE); |
| } |
| |
| /** |
| * _ipr_initiate_ioa_reset - Initiate an adapter reset |
| * @ioa_cfg: ioa config struct |
| * @job_step: first job step of reset job |
| * @shutdown_type: shutdown type |
| * |
| * Description: This function will initiate the reset of the given adapter |
| * starting at the selected job step. |
| * If the caller needs to wait on the completion of the reset, |
| * the caller must sleep on the reset_wait_q. |
| * |
| * Return value: |
| * none |
| **/ |
| static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, |
| int (*job_step) (struct ipr_cmnd *), |
| enum ipr_shutdown_type shutdown_type) |
| { |
| struct ipr_cmnd *ipr_cmd; |
| |
| ioa_cfg->in_reset_reload = 1; |
| ioa_cfg->allow_cmds = 0; |
| scsi_block_requests(ioa_cfg->host); |
| |
| ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); |
| ioa_cfg->reset_cmd = ipr_cmd; |
| ipr_cmd->job_step = job_step; |
| ipr_cmd->u.shutdown_type = shutdown_type; |
| |
| ipr_reset_ioa_job(ipr_cmd); |
| } |
| |
| /** |
| * ipr_initiate_ioa_reset - Initiate an adapter reset |
| * @ioa_cfg: ioa config struct |
| * @shutdown_type: shutdown type |
| * |
| * Description: This function will initiate the reset of the given adapter. |
| * If the caller needs to wait on the completion of the reset, |
| * the caller must sleep on the reset_wait_q. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, |
| enum ipr_shutdown_type shutdown_type) |
| { |
| if (ioa_cfg->ioa_is_dead) |
| return; |
| |
| if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) |
| ioa_cfg->sdt_state = ABORT_DUMP; |
| |
| if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { |
| dev_err(&ioa_cfg->pdev->dev, |
| "IOA taken offline - error recovery failed\n"); |
| |
| ioa_cfg->reset_retries = 0; |
| ioa_cfg->ioa_is_dead = 1; |
| |
| if (ioa_cfg->in_ioa_bringdown) { |
| ioa_cfg->reset_cmd = NULL; |
| ioa_cfg->in_reset_reload = 0; |
| ipr_fail_all_ops(ioa_cfg); |
| wake_up_all(&ioa_cfg->reset_wait_q); |
| |
| spin_unlock_irq(ioa_cfg->host->host_lock); |
| scsi_unblock_requests(ioa_cfg->host); |
| spin_lock_irq(ioa_cfg->host->host_lock); |
| return; |
| } else { |
| ioa_cfg->in_ioa_bringdown = 1; |
| shutdown_type = IPR_SHUTDOWN_NONE; |
| } |
| } |
| |
| _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, |
| shutdown_type); |
| } |
| |
| /** |
| * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) |
| * @ioa_cfg: ioa cfg struct |
| * |
| * Description: This is the second phase of adapter intialization |
| * This function takes care of initilizing the adapter to the point |
| * where it can accept new commands. |
| |
| * Return value: |
| * 0 on sucess / -EIO on failure |
| **/ |
| static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| int rc = 0; |
| unsigned long host_lock_flags = 0; |
| |
| ENTER; |
| spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); |
| if (ioa_cfg->needs_hard_reset) { |
| ioa_cfg->needs_hard_reset = 0; |
| ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); |
| } else |
| _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, |
| IPR_SHUTDOWN_NONE); |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| |
| if (ioa_cfg->ioa_is_dead) { |
| rc = -EIO; |
| } else if (ipr_invalid_adapter(ioa_cfg)) { |
| if (!ipr_testmode) |
| rc = -EIO; |
| |
| dev_err(&ioa_cfg->pdev->dev, |
| "Adapter not supported in this hardware configuration.\n"); |
| } |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| |
| LEAVE; |
| return rc; |
| } |
| |
| /** |
| * ipr_free_cmd_blks - Frees command blocks allocated for an adapter |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| int i; |
| |
| for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { |
| if (ioa_cfg->ipr_cmnd_list[i]) |
| pci_pool_free(ioa_cfg->ipr_cmd_pool, |
| ioa_cfg->ipr_cmnd_list[i], |
| ioa_cfg->ipr_cmnd_list_dma[i]); |
| |
| ioa_cfg->ipr_cmnd_list[i] = NULL; |
| } |
| |
| if (ioa_cfg->ipr_cmd_pool) |
| pci_pool_destroy (ioa_cfg->ipr_cmd_pool); |
| |
| ioa_cfg->ipr_cmd_pool = NULL; |
| } |
| |
| /** |
| * ipr_free_mem - Frees memory allocated for an adapter |
| * @ioa_cfg: ioa cfg struct |
| * |
| * Return value: |
| * nothing |
| **/ |
| static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| int i; |
| |
| kfree(ioa_cfg->res_entries); |
| pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), |
| ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); |
| ipr_free_cmd_blks(ioa_cfg); |
| pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, |
| ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); |
| pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), |
| ioa_cfg->cfg_table, |
| ioa_cfg->cfg_table_dma); |
| |
| for (i = 0; i < IPR_NUM_HCAMS; i++) { |
| pci_free_consistent(ioa_cfg->pdev, |
| sizeof(struct ipr_hostrcb), |
| ioa_cfg->hostrcb[i], |
| ioa_cfg->hostrcb_dma[i]); |
| } |
| |
| ipr_free_dump(ioa_cfg); |
| kfree(ioa_cfg->saved_mode_pages); |
| kfree(ioa_cfg->trace); |
| } |
| |
| /** |
| * ipr_free_all_resources - Free all allocated resources for an adapter. |
| * @ipr_cmd: ipr command struct |
| * |
| * This function frees all allocated resources for the |
| * specified adapter. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| struct pci_dev *pdev = ioa_cfg->pdev; |
| |
| ENTER; |
| free_irq(pdev->irq, ioa_cfg); |
| iounmap(ioa_cfg->hdw_dma_regs); |
| pci_release_regions(pdev); |
| ipr_free_mem(ioa_cfg); |
| scsi_host_put(ioa_cfg->host); |
| pci_disable_device(pdev); |
| LEAVE; |
| } |
| |
| /** |
| * ipr_alloc_cmd_blks - Allocate command blocks for an adapter |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * 0 on success / -ENOMEM on allocation failure |
| **/ |
| static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| struct ipr_cmnd *ipr_cmd; |
| struct ipr_ioarcb *ioarcb; |
| dma_addr_t dma_addr; |
| int i; |
| |
| ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, |
| sizeof(struct ipr_cmnd), 8, 0); |
| |
| if (!ioa_cfg->ipr_cmd_pool) |
| return -ENOMEM; |
| |
| for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { |
| ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr); |
| |
| if (!ipr_cmd) { |
| ipr_free_cmd_blks(ioa_cfg); |
| return -ENOMEM; |
| } |
| |
| memset(ipr_cmd, 0, sizeof(*ipr_cmd)); |
| ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; |
| ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; |
| |
| ioarcb = &ipr_cmd->ioarcb; |
| ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); |
| ioarcb->host_response_handle = cpu_to_be32(i << 2); |
| ioarcb->write_ioadl_addr = |
| cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); |
| ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; |
| ioarcb->ioasa_host_pci_addr = |
| cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); |
| ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); |
| ipr_cmd->cmd_index = i; |
| ipr_cmd->ioa_cfg = ioa_cfg; |
| ipr_cmd->sense_buffer_dma = dma_addr + |
| offsetof(struct ipr_cmnd, sense_buffer); |
| |
| list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ipr_alloc_mem - Allocate memory for an adapter |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * 0 on success / non-zero for error |
| **/ |
| static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| struct pci_dev *pdev = ioa_cfg->pdev; |
| int i, rc = -ENOMEM; |
| |
| ENTER; |
| ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * |
| IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); |
| |
| if (!ioa_cfg->res_entries) |
| goto out; |
| |
| for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) |
| list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); |
| |
| ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, |
| sizeof(struct ipr_misc_cbs), |
| &ioa_cfg->vpd_cbs_dma); |
| |
| if (!ioa_cfg->vpd_cbs) |
| goto out_free_res_entries; |
| |
| if (ipr_alloc_cmd_blks(ioa_cfg)) |
| goto out_free_vpd_cbs; |
| |
| ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, |
| sizeof(u32) * IPR_NUM_CMD_BLKS, |
| &ioa_cfg->host_rrq_dma); |
| |
| if (!ioa_cfg->host_rrq) |
| goto out_ipr_free_cmd_blocks; |
| |
| ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, |
| sizeof(struct ipr_config_table), |
| &ioa_cfg->cfg_table_dma); |
| |
| if (!ioa_cfg->cfg_table) |
| goto out_free_host_rrq; |
| |
| for (i = 0; i < IPR_NUM_HCAMS; i++) { |
| ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, |
| sizeof(struct ipr_hostrcb), |
| &ioa_cfg->hostrcb_dma[i]); |
| |
| if (!ioa_cfg->hostrcb[i]) |
| goto out_free_hostrcb_dma; |
| |
| ioa_cfg->hostrcb[i]->hostrcb_dma = |
| ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); |
| list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); |
| } |
| |
| ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * |
| IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); |
| |
| if (!ioa_cfg->trace) |
| goto out_free_hostrcb_dma; |
| |
| rc = 0; |
| out: |
| LEAVE; |
| return rc; |
| |
| out_free_hostrcb_dma: |
| while (i-- > 0) { |
| pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), |
| ioa_cfg->hostrcb[i], |
| ioa_cfg->hostrcb_dma[i]); |
| } |
| pci_free_consistent(pdev, sizeof(struct ipr_config_table), |
| ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); |
| out_free_host_rrq: |
| pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, |
| ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); |
| out_ipr_free_cmd_blocks: |
| ipr_free_cmd_blks(ioa_cfg); |
| out_free_vpd_cbs: |
| pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), |
| ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); |
| out_free_res_entries: |
| kfree(ioa_cfg->res_entries); |
| goto out; |
| } |
| |
| /** |
| * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values |
| * @ioa_cfg: ioa config struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| int i; |
| |
| for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { |
| ioa_cfg->bus_attr[i].bus = i; |
| ioa_cfg->bus_attr[i].qas_enabled = 0; |
| ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; |
| if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) |
| ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; |
| else |
| ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; |
| } |
| } |
| |
| /** |
| * ipr_init_ioa_cfg - Initialize IOA config struct |
| * @ioa_cfg: ioa config struct |
| * @host: scsi host struct |
| * @pdev: PCI dev struct |
| * |
| * Return value: |
| * none |
| **/ |
| static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, |
| struct Scsi_Host *host, struct pci_dev *pdev) |
| { |
| const struct ipr_interrupt_offsets *p; |
| struct ipr_interrupts *t; |
| void __iomem *base; |
| |
| ioa_cfg->host = host; |
| ioa_cfg->pdev = pdev; |
| ioa_cfg->log_level = ipr_log_level; |
| ioa_cfg->doorbell = IPR_DOORBELL; |
| if (!ipr_auto_create) |
| ioa_cfg->doorbell |= IPR_RUNTIME_RESET; |
| sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); |
| sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); |
| sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); |
| sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); |
| sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); |
| sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); |
| sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); |
| sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); |
| |
| INIT_LIST_HEAD(&ioa_cfg->free_q); |
| INIT_LIST_HEAD(&ioa_cfg->pending_q); |
| INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); |
| INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); |
| INIT_LIST_HEAD(&ioa_cfg->free_res_q); |
| INIT_LIST_HEAD(&ioa_cfg->used_res_q); |
| INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg); |
| init_waitqueue_head(&ioa_cfg->reset_wait_q); |
| ioa_cfg->sdt_state = INACTIVE; |
| if (ipr_enable_cache) |
| ioa_cfg->cache_state = CACHE_ENABLED; |
| else |
| ioa_cfg->cache_state = CACHE_DISABLED; |
| |
| ipr_initialize_bus_attr(ioa_cfg); |
| |
| host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; |
| host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; |
| host->max_channel = IPR_MAX_BUS_TO_SCAN; |
| host->unique_id = host->host_no; |
| host->max_cmd_len = IPR_MAX_CDB_LEN; |
| pci_set_drvdata(pdev, ioa_cfg); |
| |
| p = &ioa_cfg->chip_cfg->regs; |
| t = &ioa_cfg->regs; |
| base = ioa_cfg->hdw_dma_regs; |
| |
| t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; |
| t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; |
| t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; |
| t->clr_interrupt_reg = base + p->clr_interrupt_reg; |
| t->sense_interrupt_reg = base + p->sense_interrupt_reg; |
| t->ioarrin_reg = base + p->ioarrin_reg; |
| t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; |
| t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; |
| t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; |
| } |
| |
| /** |
| * ipr_get_chip_cfg - Find adapter chip configuration |
| * @dev_id: PCI device id struct |
| * |
| * Return value: |
| * ptr to chip config on success / NULL on failure |
| **/ |
| static const struct ipr_chip_cfg_t * __devinit |
| ipr_get_chip_cfg(const struct pci_device_id *dev_id) |
| { |
| int i; |
| |
| if (dev_id->driver_data) |
| return (const struct ipr_chip_cfg_t *)dev_id->driver_data; |
| |
| for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) |
| if (ipr_chip[i].vendor == dev_id->vendor && |
| ipr_chip[i].device == dev_id->device) |
| return ipr_chip[i].cfg; |
| return NULL; |
| } |
| |
| /** |
| * ipr_probe_ioa - Allocates memory and does first stage of initialization |
| * @pdev: PCI device struct |
| * @dev_id: PCI device id struct |
| * |
| * Return value: |
| * 0 on success / non-zero on failure |
| **/ |
| static int __devinit ipr_probe_ioa(struct pci_dev *pdev, |
| const struct pci_device_id *dev_id) |
| { |
| struct ipr_ioa_cfg *ioa_cfg; |
| struct Scsi_Host *host; |
| unsigned long ipr_regs_pci; |
| void __iomem *ipr_regs; |
| u32 rc = PCIBIOS_SUCCESSFUL; |
| volatile u32 mask, uproc; |
| |
| ENTER; |
| |
| if ((rc = pci_enable_device(pdev))) { |
| dev_err(&pdev->dev, "Cannot enable adapter\n"); |
| goto out; |
| } |
| |
| dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); |
| |
| host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); |
| |
| if (!host) { |
| dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); |
| rc = -ENOMEM; |
| goto out_disable; |
| } |
| |
| ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; |
| memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); |
| |
| ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); |
| |
| if (!ioa_cfg->chip_cfg) { |
| dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", |
| dev_id->vendor, dev_id->device); |
| goto out_scsi_host_put; |
| } |
| |
| ipr_regs_pci = pci_resource_start(pdev, 0); |
| |
| rc = pci_request_regions(pdev, IPR_NAME); |
| if (rc < 0) { |
| dev_err(&pdev->dev, |
| "Couldn't register memory range of registers\n"); |
| goto out_scsi_host_put; |
| } |
| |
| ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); |
| |
| if (!ipr_regs) { |
| dev_err(&pdev->dev, |
| "Couldn't map memory range of registers\n"); |
| rc = -ENOMEM; |
| goto out_release_regions; |
| } |
| |
| ioa_cfg->hdw_dma_regs = ipr_regs; |
| ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; |
| ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; |
| |
| ipr_init_ioa_cfg(ioa_cfg, host, pdev); |
| |
| pci_set_master(pdev); |
| |
| rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| if (rc < 0) { |
| dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); |
| goto cleanup_nomem; |
| } |
| |
| rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, |
| ioa_cfg->chip_cfg->cache_line_size); |
| |
| if (rc != PCIBIOS_SUCCESSFUL) { |
| dev_err(&pdev->dev, "Write of cache line size failed\n"); |
| rc = -EIO; |
| goto cleanup_nomem; |
| } |
| |
| /* Save away PCI config space for use following IOA reset */ |
| rc = pci_save_state(pdev); |
| |
| if (rc != PCIBIOS_SUCCESSFUL) { |
| dev_err(&pdev->dev, "Failed to save PCI config space\n"); |
| rc = -EIO; |
| goto cleanup_nomem; |
| } |
| |
| if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) |
| goto cleanup_nomem; |
| |
| if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) |
| goto cleanup_nomem; |
| |
| rc = ipr_alloc_mem(ioa_cfg); |
| if (rc < 0) { |
| dev_err(&pdev->dev, |
| "Couldn't allocate enough memory for device driver!\n"); |
| goto cleanup_nomem; |
| } |
| |
| /* |
| * If HRRQ updated interrupt is not masked, or reset alert is set, |
| * the card is in an unknown state and needs a hard reset |
| */ |
| mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); |
| uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); |
| if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) |
| ioa_cfg->needs_hard_reset = 1; |
| |
| ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); |
| rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg); |
| |
| if (rc) { |
| dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", |
| pdev->irq, rc); |
| goto cleanup_nolog; |
| } |
| |
| spin_lock(&ipr_driver_lock); |
| list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); |
| spin_unlock(&ipr_driver_lock); |
| |
| LEAVE; |
| out: |
| return rc; |
| |
| cleanup_nolog: |
| ipr_free_mem(ioa_cfg); |
| cleanup_nomem: |
| iounmap(ipr_regs); |
| out_release_regions: |
| pci_release_regions(pdev); |
| out_scsi_host_put: |
| scsi_host_put(host); |
| out_disable: |
| pci_disable_device(pdev); |
| goto out; |
| } |
| |
| /** |
| * ipr_scan_vsets - Scans for VSET devices |
| * @ioa_cfg: ioa config struct |
| * |
| * Description: Since the VSET resources do not follow SAM in that we can have |
| * sparse LUNs with no LUN 0, we have to scan for these ourselves. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) |
| { |
| int target, lun; |
| |
| for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) |
| for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) |
| scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); |
| } |
| |
| /** |
| * ipr_initiate_ioa_bringdown - Bring down an adapter |
| * @ioa_cfg: ioa config struct |
| * @shutdown_type: shutdown type |
| * |
| * Description: This function will initiate bringing down the adapter. |
| * This consists of issuing an IOA shutdown to the adapter |
| * to flush the cache, and running BIST. |
| * If the caller needs to wait on the completion of the reset, |
| * the caller must sleep on the reset_wait_q. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, |
| enum ipr_shutdown_type shutdown_type) |
| { |
| ENTER; |
| if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) |
| ioa_cfg->sdt_state = ABORT_DUMP; |
| ioa_cfg->reset_retries = 0; |
| ioa_cfg->in_ioa_bringdown = 1; |
| ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); |
| LEAVE; |
| } |
| |
| /** |
| * __ipr_remove - Remove a single adapter |
| * @pdev: pci device struct |
| * |
| * Adapter hot plug remove entry point. |
| * |
| * Return value: |
| * none |
| **/ |
| static void __ipr_remove(struct pci_dev *pdev) |
| { |
| unsigned long host_lock_flags = 0; |
| struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); |
| ENTER; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| flush_scheduled_work(); |
| spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); |
| |
| spin_lock(&ipr_driver_lock); |
| list_del(&ioa_cfg->queue); |
| spin_unlock(&ipr_driver_lock); |
| |
| if (ioa_cfg->sdt_state == ABORT_DUMP) |
| ioa_cfg->sdt_state = WAIT_FOR_DUMP; |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); |
| |
| ipr_free_all_resources(ioa_cfg); |
| |
| LEAVE; |
| } |
| |
| /** |
| * ipr_remove - IOA hot plug remove entry point |
| * @pdev: pci device struct |
| * |
| * Adapter hot plug remove entry point. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_remove(struct pci_dev *pdev) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); |
| |
| ENTER; |
| |
| ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
| &ipr_trace_attr); |
| ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, |
| &ipr_dump_attr); |
| scsi_remove_host(ioa_cfg->host); |
| |
| __ipr_remove(pdev); |
| |
| LEAVE; |
| } |
| |
| /** |
| * ipr_probe - Adapter hot plug add entry point |
| * |
| * Return value: |
| * 0 on success / non-zero on failure |
| **/ |
| static int __devinit ipr_probe(struct pci_dev *pdev, |
| const struct pci_device_id *dev_id) |
| { |
| struct ipr_ioa_cfg *ioa_cfg; |
| int rc; |
| |
| rc = ipr_probe_ioa(pdev, dev_id); |
| |
| if (rc) |
| return rc; |
| |
| ioa_cfg = pci_get_drvdata(pdev); |
| rc = ipr_probe_ioa_part2(ioa_cfg); |
| |
| if (rc) { |
| __ipr_remove(pdev); |
| return rc; |
| } |
| |
| rc = scsi_add_host(ioa_cfg->host, &pdev->dev); |
| |
| if (rc) { |
| __ipr_remove(pdev); |
| return rc; |
| } |
| |
| rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
| &ipr_trace_attr); |
| |
| if (rc) { |
| scsi_remove_host(ioa_cfg->host); |
| __ipr_remove(pdev); |
| return rc; |
| } |
| |
| rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, |
| &ipr_dump_attr); |
| |
| if (rc) { |
| ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, |
| &ipr_trace_attr); |
| scsi_remove_host(ioa_cfg->host); |
| __ipr_remove(pdev); |
| return rc; |
| } |
| |
| scsi_scan_host(ioa_cfg->host); |
| ipr_scan_vsets(ioa_cfg); |
| scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); |
| ioa_cfg->allow_ml_add_del = 1; |
| ioa_cfg->host->max_channel = IPR_VSET_BUS; |
| schedule_work(&ioa_cfg->work_q); |
| return 0; |
| } |
| |
| /** |
| * ipr_shutdown - Shutdown handler. |
| * @pdev: pci device struct |
| * |
| * This function is invoked upon system shutdown/reboot. It will issue |
| * an adapter shutdown to the adapter to flush the write cache. |
| * |
| * Return value: |
| * none |
| **/ |
| static void ipr_shutdown(struct pci_dev *pdev) |
| { |
| struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); |
| unsigned long lock_flags = 0; |
| |
| spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); |
| ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); |
| spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); |
| wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); |
| } |
| |
| static struct pci_device_id ipr_pci_table[] __devinitdata = { |
| { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] }, |
| { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, |
| { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, |
| { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, |
| PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, |
| 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(pci, ipr_pci_table); |
| |
| static struct pci_driver ipr_driver = { |
| .name = IPR_NAME, |
| .id_table = ipr_pci_table, |
| .probe = ipr_probe, |
| .remove = ipr_remove, |
| .shutdown = ipr_shutdown, |
| }; |
| |
| /** |
| * ipr_init - Module entry point |
| * |
| * Return value: |
| * 0 on success / negative value on failure |
| **/ |
| static int __init ipr_init(void) |
| { |
| ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", |
| IPR_DRIVER_VERSION, IPR_DRIVER_DATE); |
| |
| return pci_module_init(&ipr_driver); |
| } |
| |
| /** |
| * ipr_exit - Module unload |
| * |
| * Module unload entry point. |
| * |
| * Return value: |
| * none |
| **/ |
| static void __exit ipr_exit(void) |
| { |
| pci_unregister_driver(&ipr_driver); |
| } |
| |
| module_init(ipr_init); |
| module_exit(ipr_exit); |