2005-04-16 16:20:36 -06:00
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/***************************************************************************
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dpti.h - description
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-------------------
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begin : Thu Sep 7 2000
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copyright : (C) 2001 by Adaptec
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See Documentation/scsi/dpti.txt for history, notes, license info
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and credits
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef _DPT_H
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#define _DPT_H
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#define MAX_TO_IOP_MESSAGES (255)
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#define MAX_FROM_IOP_MESSAGES (255)
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/*
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* SCSI interface function Prototypes
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*/
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2007-12-10 16:49:20 -07:00
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static int adpt_detect(struct scsi_host_template * sht);
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2005-04-16 16:20:36 -06:00
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static int adpt_queue(struct scsi_cmnd * cmd, void (*cmdcomplete) (struct scsi_cmnd *));
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static int adpt_abort(struct scsi_cmnd * cmd);
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static int adpt_reset(struct scsi_cmnd* cmd);
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2007-12-10 16:49:20 -07:00
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static int adpt_release(struct Scsi_Host *host);
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2005-04-16 16:20:36 -06:00
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static int adpt_slave_configure(struct scsi_device *);
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static const char *adpt_info(struct Scsi_Host *pSHost);
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static int adpt_bios_param(struct scsi_device * sdev, struct block_device *dev,
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sector_t, int geom[]);
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static int adpt_bus_reset(struct scsi_cmnd* cmd);
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static int adpt_device_reset(struct scsi_cmnd* cmd);
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/*
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2006-10-04 02:22:09 -06:00
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* struct scsi_host_template (see scsi/scsi_host.h)
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2005-04-16 16:20:36 -06:00
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*/
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#define DPT_DRIVER_NAME "Adaptec I2O RAID"
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2007-12-10 16:49:20 -07:00
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#ifndef HOSTS_C
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2005-04-16 16:20:36 -06:00
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#include "dpt/sys_info.h"
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#include <linux/wait.h>
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#include "dpt/dpti_i2o.h"
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#include "dpt/dpti_ioctl.h"
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#define DPT_I2O_VERSION "2.4 Build 5go"
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#define DPT_VERSION 2
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#define DPT_REVISION '4'
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#define DPT_SUBREVISION '5'
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#define DPT_BETA ""
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#define DPT_MONTH 8
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#define DPT_DAY 7
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#define DPT_YEAR (2001-1980)
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#define DPT_DRIVER "dpt_i2o"
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#define DPTI_I2O_MAJOR (151)
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#define DPT_ORGANIZATION_ID (0x1B) /* For Private Messages */
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#define DPTI_MAX_HBA (16)
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#define MAX_CHANNEL (5) // Maximum Channel # Supported
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#define MAX_ID (128) // Maximum Target ID Supported
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/* Sizes in 4 byte words */
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#define REPLY_FRAME_SIZE (17)
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#define MAX_MESSAGE_SIZE (128)
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#define SG_LIST_ELEMENTS (56)
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#define EMPTY_QUEUE 0xffffffff
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#define I2O_INTERRUPT_PENDING_B (0x08)
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#define PCI_DPT_VENDOR_ID (0x1044) // DPT PCI Vendor ID
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#define PCI_DPT_DEVICE_ID (0xA501) // DPT PCI I2O Device ID
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#define PCI_DPT_RAPTOR_DEVICE_ID (0xA511)
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/* Debugging macro from Linux Device Drivers - Rubini */
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#undef PDEBUG
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#ifdef DEBUG
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//TODO add debug level switch
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# define PDEBUG(fmt, args...) printk(KERN_DEBUG "dpti: " fmt, ##args)
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# define PDEBUGV(fmt, args...) printk(KERN_DEBUG "dpti: " fmt, ##args)
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#else
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# define PDEBUG(fmt, args...) /* not debugging: nothing */
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# define PDEBUGV(fmt, args...) /* not debugging: nothing */
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#endif
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#define PERROR(fmt, args...) printk(KERN_ERR fmt, ##args)
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#define PWARN(fmt, args...) printk(KERN_WARNING fmt, ##args)
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#define PINFO(fmt, args...) printk(KERN_INFO fmt, ##args)
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#define PCRIT(fmt, args...) printk(KERN_CRIT fmt, ##args)
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#define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGTERM))
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// Command timeouts
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#define FOREVER (0)
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#define TMOUT_INQUIRY (20)
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#define TMOUT_FLUSH (360/45)
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#define TMOUT_ABORT (30)
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#define TMOUT_SCSI (300)
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#define TMOUT_IOPRESET (360)
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#define TMOUT_GETSTATUS (15)
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#define TMOUT_INITOUTBOUND (15)
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#define TMOUT_LCT (360)
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#define I2O_SCSI_DEVICE_DSC_MASK 0x00FF
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#define I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION 0x000A
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#define I2O_SCSI_DSC_MASK 0xFF00
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#define I2O_SCSI_DSC_SUCCESS 0x0000
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#define I2O_SCSI_DSC_REQUEST_ABORTED 0x0200
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#define I2O_SCSI_DSC_UNABLE_TO_ABORT 0x0300
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#define I2O_SCSI_DSC_COMPLETE_WITH_ERROR 0x0400
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#define I2O_SCSI_DSC_ADAPTER_BUSY 0x0500
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#define I2O_SCSI_DSC_REQUEST_INVALID 0x0600
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#define I2O_SCSI_DSC_PATH_INVALID 0x0700
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#define I2O_SCSI_DSC_DEVICE_NOT_PRESENT 0x0800
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#define I2O_SCSI_DSC_UNABLE_TO_TERMINATE 0x0900
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#define I2O_SCSI_DSC_SELECTION_TIMEOUT 0x0A00
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#define I2O_SCSI_DSC_COMMAND_TIMEOUT 0x0B00
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#define I2O_SCSI_DSC_MR_MESSAGE_RECEIVED 0x0D00
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#define I2O_SCSI_DSC_SCSI_BUS_RESET 0x0E00
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#define I2O_SCSI_DSC_PARITY_ERROR_FAILURE 0x0F00
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#define I2O_SCSI_DSC_AUTOSENSE_FAILED 0x1000
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#define I2O_SCSI_DSC_NO_ADAPTER 0x1100
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#define I2O_SCSI_DSC_DATA_OVERRUN 0x1200
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#define I2O_SCSI_DSC_UNEXPECTED_BUS_FREE 0x1300
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#define I2O_SCSI_DSC_SEQUENCE_FAILURE 0x1400
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#define I2O_SCSI_DSC_REQUEST_LENGTH_ERROR 0x1500
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#define I2O_SCSI_DSC_PROVIDE_FAILURE 0x1600
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#define I2O_SCSI_DSC_BDR_MESSAGE_SENT 0x1700
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#define I2O_SCSI_DSC_REQUEST_TERMINATED 0x1800
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#define I2O_SCSI_DSC_IDE_MESSAGE_SENT 0x3300
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#define I2O_SCSI_DSC_RESOURCE_UNAVAILABLE 0x3400
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#define I2O_SCSI_DSC_UNACKNOWLEDGED_EVENT 0x3500
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#define I2O_SCSI_DSC_MESSAGE_RECEIVED 0x3600
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#define I2O_SCSI_DSC_INVALID_CDB 0x3700
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#define I2O_SCSI_DSC_LUN_INVALID 0x3800
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#define I2O_SCSI_DSC_SCSI_TID_INVALID 0x3900
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#define I2O_SCSI_DSC_FUNCTION_UNAVAILABLE 0x3A00
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#define I2O_SCSI_DSC_NO_NEXUS 0x3B00
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#define I2O_SCSI_DSC_SCSI_IID_INVALID 0x3C00
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#define I2O_SCSI_DSC_CDB_RECEIVED 0x3D00
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#define I2O_SCSI_DSC_LUN_ALREADY_ENABLED 0x3E00
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#define I2O_SCSI_DSC_BUS_BUSY 0x3F00
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#define I2O_SCSI_DSC_QUEUE_FROZEN 0x4000
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#ifndef TRUE
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#define TRUE 1
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#define FALSE 0
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#endif
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#define HBA_FLAGS_INSTALLED_B 0x00000001 // Adapter Was Installed
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#define HBA_FLAGS_BLINKLED_B 0x00000002 // Adapter In Blink LED State
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#define HBA_FLAGS_IN_RESET 0x00000040 /* in reset */
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#define HBA_HOSTRESET_FAILED 0x00000080 /* adpt_resethost failed */
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// Device state flags
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#define DPTI_DEV_ONLINE 0x00
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#define DPTI_DEV_UNSCANNED 0x01
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#define DPTI_DEV_RESET 0x02
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#define DPTI_DEV_OFFLINE 0x04
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struct adpt_device {
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struct adpt_device* next_lun;
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u32 flags;
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u32 type;
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u32 capacity;
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u32 block_size;
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u8 scsi_channel;
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u8 scsi_id;
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u8 scsi_lun;
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u8 state;
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u16 tid;
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struct i2o_device* pI2o_dev;
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struct scsi_device *pScsi_dev;
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};
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struct adpt_channel {
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struct adpt_device* device[MAX_ID]; /* used as an array of 128 scsi ids */
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u8 scsi_id;
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u8 type;
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u16 tid;
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u32 state;
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struct i2o_device* pI2o_dev;
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};
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// HBA state flags
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#define DPTI_STATE_RESET (0x01)
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#define DPTI_STATE_IOCTL (0x02)
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typedef struct _adpt_hba {
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struct _adpt_hba *next;
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struct pci_dev *pDev;
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struct Scsi_Host *host;
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u32 state;
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spinlock_t state_lock;
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int unit;
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int host_no; /* SCSI host number */
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u8 initialized;
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u8 in_use; /* is the management node open*/
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char name[32];
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char detail[55];
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void __iomem *base_addr_virt;
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void __iomem *msg_addr_virt;
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ulong base_addr_phys;
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void __iomem *post_port;
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void __iomem *reply_port;
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void __iomem *irq_mask;
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u16 post_count;
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u32 post_fifo_size;
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u32 reply_fifo_size;
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u32* reply_pool;
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u32 sg_tablesize; // Scatter/Gather List Size.
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u8 top_scsi_channel;
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u8 top_scsi_id;
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u8 top_scsi_lun;
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i2o_status_block* status_block;
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i2o_hrt* hrt;
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i2o_lct* lct;
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uint lct_size;
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struct i2o_device* devices;
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struct adpt_channel channel[MAX_CHANNEL];
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struct proc_dir_entry* proc_entry; /* /proc dir */
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void __iomem *FwDebugBuffer_P; // Virtual Address Of FW Debug Buffer
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u32 FwDebugBufferSize; // FW Debug Buffer Size In Bytes
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void __iomem *FwDebugStrLength_P;// Virtual Addr Of FW Debug String Len
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void __iomem *FwDebugFlags_P; // Virtual Address Of FW Debug Flags
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void __iomem *FwDebugBLEDflag_P;// Virtual Addr Of FW Debug BLED
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void __iomem *FwDebugBLEDvalue_P;// Virtual Addr Of FW Debug BLED
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u32 FwDebugFlags;
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} adpt_hba;
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struct sg_simple_element {
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u32 flag_count;
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u32 addr_bus;
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};
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/*
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* Function Prototypes
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*/
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static void adpt_i2o_sys_shutdown(void);
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static int adpt_init(void);
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static int adpt_i2o_build_sys_table(void);
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IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
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static irqreturn_t adpt_isr(int irq, void *dev_id);
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2005-04-16 16:20:36 -06:00
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static void adpt_i2o_report_hba_unit(adpt_hba* pHba, struct i2o_device *d);
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static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid,
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int group, int field, void *buf, int buflen);
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#ifdef DEBUG
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static const char *adpt_i2o_get_class_name(int class);
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#endif
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static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid,
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void *opblk, int oplen, void *resblk, int reslen);
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static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout);
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static int adpt_i2o_lct_get(adpt_hba* pHba);
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static int adpt_i2o_parse_lct(adpt_hba* pHba);
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static int adpt_i2o_activate_hba(adpt_hba* pHba);
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static int adpt_i2o_enable_hba(adpt_hba* pHba);
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static int adpt_i2o_install_device(adpt_hba* pHba, struct i2o_device *d);
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static s32 adpt_i2o_post_this(adpt_hba* pHba, u32* data, int len);
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static s32 adpt_i2o_quiesce_hba(adpt_hba* pHba);
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static s32 adpt_i2o_status_get(adpt_hba* pHba);
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static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba);
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static s32 adpt_i2o_hrt_get(adpt_hba* pHba);
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static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_device* dptdevice);
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2005-04-25 20:46:48 -06:00
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static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd);
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2008-05-01 17:05:33 -06:00
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static s32 adpt_scsi_host_alloc(adpt_hba* pHba,struct scsi_host_template * sht);
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2005-04-16 16:20:36 -06:00
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static s32 adpt_hba_reset(adpt_hba* pHba);
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static s32 adpt_i2o_reset_hba(adpt_hba* pHba);
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static s32 adpt_rescan(adpt_hba* pHba);
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static s32 adpt_i2o_reparse_lct(adpt_hba* pHba);
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static s32 adpt_send_nop(adpt_hba*pHba,u32 m);
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static void adpt_i2o_delete_hba(adpt_hba* pHba);
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static void adpt_inquiry(adpt_hba* pHba);
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static void adpt_fail_posted_scbs(adpt_hba* pHba);
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static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u32 lun);
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2007-12-10 16:49:20 -07:00
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static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev) ;
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2005-04-16 16:20:36 -06:00
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static int adpt_i2o_online_hba(adpt_hba* pHba);
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static void adpt_i2o_post_wait_complete(u32, int);
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static int adpt_i2o_systab_send(adpt_hba* pHba);
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static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg);
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static int adpt_open(struct inode *inode, struct file *file);
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static int adpt_close(struct inode *inode, struct file *file);
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#ifdef UARTDELAY
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static void adpt_delay(int millisec);
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#endif
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#if defined __ia64__
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static void adpt_ia64_info(sysInfo_S* si);
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#endif
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#if defined __sparc__
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static void adpt_sparc_info(sysInfo_S* si);
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#endif
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#if defined __alpha__
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static void adpt_sparc_info(sysInfo_S* si);
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#endif
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#if defined __i386__
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static void adpt_i386_info(sysInfo_S* si);
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#endif
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#define PRINT_BUFFER_SIZE 512
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#define HBA_FLAGS_DBG_FLAGS_MASK 0xffff0000 // Mask for debug flags
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#define HBA_FLAGS_DBG_KERNEL_PRINT_B 0x00010000 // Kernel Debugger Print
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#define HBA_FLAGS_DBG_FW_PRINT_B 0x00020000 // Firmware Debugger Print
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#define HBA_FLAGS_DBG_FUNCTION_ENTRY_B 0x00040000 // Function Entry Point
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#define HBA_FLAGS_DBG_FUNCTION_EXIT_B 0x00080000 // Function Exit
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#define HBA_FLAGS_DBG_ERROR_B 0x00100000 // Error Conditions
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#define HBA_FLAGS_DBG_INIT_B 0x00200000 // Init Prints
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#define HBA_FLAGS_DBG_OS_COMMANDS_B 0x00400000 // OS Command Info
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#define HBA_FLAGS_DBG_SCAN_B 0x00800000 // Device Scan
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#define FW_DEBUG_STR_LENGTH_OFFSET 0
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#define FW_DEBUG_FLAGS_OFFSET 4
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#define FW_DEBUG_BLED_OFFSET 8
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#define FW_DEBUG_FLAGS_NO_HEADERS_B 0x01
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2007-12-10 16:49:20 -07:00
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#endif /* !HOSTS_C */
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2005-04-16 16:20:36 -06:00
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#endif /* _DPT_H */
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