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Diffstat (limited to 'drivers/scsi/ipr.c')
| -rw-r--r-- | drivers/scsi/ipr.c | 6083 |
1 files changed, 6083 insertions, 0 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c new file mode 100644 index 000000000000..5441531c0d8e --- /dev/null +++ b/drivers/scsi/ipr.c @@ -0,0 +1,6083 @@ +/* + * 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 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 and Citrine */ + .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_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_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"}, + {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"}, + {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"}, + {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"}, + {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"}, + {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"}, + {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 = 1; + 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. + * @vpids: vendor/product id struct + * @serial_num: serial number string + * + * Return value: + * none + **/ +static void ipr_log_vpd(struct ipr_std_inq_vpids *vpids, u8 *serial_num) +{ + char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + + IPR_SERIAL_NUM_LEN]; + + memcpy(buffer, vpids->vendor_id, IPR_VENDOR_ID_LEN); + memcpy(buffer + IPR_VENDOR_ID_LEN, 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, serial_num, IPR_SERIAL_NUM_LEN); + buffer[IPR_SERIAL_NUM_LEN] = '\0'; + ipr_err(" Serial Number: %s\n", buffer); +} + +/** + * 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_vpids, error->ioa_sn); + ipr_err("Adapter Card Information:\n"); + ipr_log_vpd(&error->cfc_vpids, error->cfc_sn); + + ipr_err("-----Expected Configuration-----\n"); + ipr_err("Cache Directory Card Information:\n"); + ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpids, + error->ioa_last_attached_to_cfc_sn); + ipr_err("Adapter Card Information:\n"); + ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpids, + error->cfc_last_attached_to_ioa_sn); + + 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_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_entry; + + for (i = 0; i < errors_logged; i++, dev_entry++) { + ipr_err_separator; + + if (dev_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { + ipr_err("Device %d: missing\n", i + 1); + } else { + ipr_err("Device %d: %d:%d:%d:%d\n", i + 1, + ioa_cfg->host->host_no, dev_entry->dev_res_addr.bus, + dev_entry->dev_res_addr.target, dev_entry->dev_res_addr.lun); + } + ipr_log_vpd(&dev_entry->dev_vpids, dev_entry->dev_sn); + + ipr_err("-----New Device Information-----\n"); + ipr_log_vpd(&dev_entry->new_dev_vpids, dev_entry->new_dev_sn); + + ipr_err("Cache Directory Card Information:\n"); + ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpids, + dev_entry->ioa_last_with_dev_sn); + + ipr_err("Adapter Card Information:\n"); + ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpids, + dev_entry->cfc_last_with_dev_sn); + + 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_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->serial_num, 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->vpids, array_entry->serial_num); + + if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { + ipr_err("Current Location: unknown\n"); + } else { + ipr_err("Current Location: %d:%d:%d:%d\n", + ioa_cfg->host->host_no, + array_entry->dev_res_addr.bus, + array_entry->dev_res_addr.target, + array_entry->dev_res_addr.lun); + } + + if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) { + ipr_err("Expected Location: unknown\n"); + } else { + ipr_err("Expected Location: %d:%d:%d:%d\n", + ioa_cfg->host->host_no, + array_entry->expected_dev_res_addr.bus, + array_entry->expected_dev_res_addr.target, + array_entry->expected_dev_res_addr.lun); + } + + ipr_err_separator; + + if (i == 9) + array_entry = error->array_member2; + else + array_entry++; + } +} + +/** + * 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) +{ + int i; + int ioa_data_len = be32_to_cpu(hostrcb->hcam.length); + + if (ioa_data_len == 0) + return; + + ipr_err("IOA Error Data:\n"); + ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n"); + + for (i = 0; i < ioa_data_len / 4; i += 4) { + ipr_err("%08X: %08X %08X %08X %08X\n", i*4, + be32_to_cpu(hostrcb->hcam.u.raw.data[i]), + be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]), + be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]), + be32_to_cpu(hostrcb->hcam.u.raw.data[i+3])); + } +} + +/** + * 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; + + switch (hostrcb->hcam.overlay_id) { + case IPR_HOST_RCB_OVERLAY_ID_1: + ipr_log_generic_error(ioa_cfg, hostrcb); + break; + 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_DEFAULT: + ipr_log_generic_error(ioa_cfg, hostrcb); + break; + default: + dev_err(&ioa_cfg->pdev->dev, + "Unknown error received. Overlay ID: %d\n", + hostrcb->hcam.overlay_id); + 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 + +/** + * 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_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 = kmalloc(sizeof(struct ipr_sglist) + + (sizeof(struct scatterlist) * (num_elem - 1)), + GFP_KERNEL); + + if (sglist == NULL) { + ipr_trace; + return NULL; + } + + memset(sglist, 0, sizeof(struct ipr_sglist) + + (sizeof(struct scatterlist) * (num_elem - 1))); + + 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_map_ucode_buffer - Map a microcode download buffer + * @ipr_cmd: ipr command struct + * @sglist: scatter/gather list + * @len: total length of download buffer + * + * Maps a microcode download scatter/gather list for DMA and + * builds the IOADL. + * + * Return value: + * 0 on success / -EIO on failure + **/ +static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd, + struct ipr_sglist *sglist, int len) +{ + 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 scatterlist *scatterlist = sglist->scatterlist; + int i; + + ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist, + sglist->num_sg, DMA_TO_DEVICE); + + ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; + ioarcb->write_data_transfer_length = cpu_to_be32(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])); + } + + if (likely(ipr_cmd->dma_use_sg)) { + ioadl[i-1].flags_and_data_len |= + cpu_to_be32(IPR_IOADL_FLAGS_LAST); + } + else { + dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); + return -EIO; + } + + 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; + unsigned long lock_flags; + 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"); + ipr_free_ucode_buffer(sglist); + release_firmware(fw_entry); + return result; + } + + 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"); + ipr_free_ucode_buffer(sglist); + release_firmware(fw_entry); + 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); + + ipr_free_ucode_buffer(sglist); + release_firmware(fw_entry); + + return count; +} + +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_reset_attr, + &ipr_update_fw_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 = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL); + + if (!dump) { + ipr_err("Dump memory allocation failed\n"); + return -ENOMEM; + } + + memset(dump, 0, sizeof(struct ipr_dump)); + 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, 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; + 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 + **/ +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; + + 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; + res->needs_sync_complete = 1; + break; + } + } + + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); + + return 0; +} + +/** + * 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; +} + +/** + * 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 || (!ipr_is_gscsi(res) && !ipr_is_vset_device(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); +} + +/** + * 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 (!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); + 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) +{ + struct ipr_ioa_cfg *ioa_cfg; + + ENTER; + ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->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) + return FAILED; + if (ioa_cfg->ioa_is_dead) + return FAILED; + if (!scsi_cmd->device->hostdata) + return FAILED; + + LEAVE; + return ipr_cancel_op(scsi_cmd); +} + +/** + * 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) { + 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_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: + scsi_cmd->result |= (DID_IMM_RETRY << 16); + break; + case IPR_IOASC_IR_RESOURCE_HANDLE: + scsi_cmd->result |= (DID_NO_CONNECT << 16); + break; + case IPR_IOASC_HW_SEL_TIMEOUT: + scsi_cmd->result |= (DID_NO_CONNECT << 16); + 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 */ + 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); + 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) { + ipr_erp_cancel_all(ipr_cmd); + return; + } + 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)) + 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; + + 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_af_dasd_device(res)) + 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_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_set_supported_devs; + ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, + struct ipr_resource_entry, queue); + + 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_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_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_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; + 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_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_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_page3_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(IPR_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; + 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; + 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; + + if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) { + dev_err(&ioa_cfg->pdev->dev, + "Failed to map microcode download buffer\n"); + return IPR_RC_JOB_CONTINUE; + } + + 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; + unsigned long scratch = ipr_cmd->u.scratch; + 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)) { + 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_reinit_ipr_cmnd(ipr_cmd); + ipr_cmd->u.scratch = scratch; + 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); + _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 = kmalloc(sizeof(struct ipr_resource_entry) * + IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); + + if (!ioa_cfg->res_entries) + goto out; + + memset(ioa_cfg->res_entries, 0, + sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS); + + 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 = kmalloc(sizeof(struct ipr_trace_entry) * + IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); + + if (!ioa_cfg->trace) + goto out_free_hostrcb_dma; + + memset(ioa_cfg->trace, 0, + sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES); + + 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; + 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; + + 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; + + 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; + } + + 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); + 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; + + ioa_cfg->allow_cmds = 0; + flush_scheduled_work(); + 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; + schedule_work(&ioa_cfg->work_q); + return 0; +} + +/** + * ipr_shutdown - Shutdown handler. + * @dev: 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 device *dev) +{ + struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(to_pci_dev(dev)); + 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_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] }, + { } +}; +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, + .driver = { + .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); |