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[SCSI] arcmsr: initial driver, version 1.20.00.13

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arcmsr is a driver for the Areca Raid controller, a host based RAID
subsystem that speaks SCSI at the firmware level.

This patch is quite a clean up over the initial submission with
contributions from:

Randy Dunlap <rdunlap@xenotime.net>
Christoph Hellwig <hch@lst.de>
Matthew Wilcox <matthew@wil.cx>
Adrian Bunk <bunk@stusta.de>

Signed-off-by: Erich Chen <erich@areca.com.tw>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Erich Chen
2006-07-12 08:59:32 -07:00
committed by James Bottomley
parent 0c269e6d3c
commit 1c57e86d75
9 changed files with 3028 additions and 0 deletions
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6
drivers/scsi/arcmsr/Makefile Normal file
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# File: drivers/arcmsr/Makefile
# Makefile for the ARECA PCI-X PCI-EXPRESS SATA RAID controllers SCSI driver.
arcmsr-objs := arcmsr_attr.o arcmsr_hba.o
obj-$(CONFIG_SCSI_ARCMSR) := arcmsr.o

472
drivers/scsi/arcmsr/arcmsr.h Normal file
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/*
*******************************************************************************
** O.S : Linux
** FILE NAME : arcmsr.h
** BY : Erich Chen
** Description: SCSI RAID Device Driver for
** ARECA RAID Host adapter
*******************************************************************************
** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved.
**
** Web site: www.areca.com.tw
** E-mail: erich@areca.com.tw
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License version 2 as
** published by the Free Software Foundation.
** 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.
*******************************************************************************
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
**(INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************
*/
#include <linux/interrupt.h>
struct class_device_attribute;
#define ARCMSR_MAX_OUTSTANDING_CMD 256
#define ARCMSR_MAX_FREECCB_NUM 288
#define ARCMSR_DRIVER_VERSION "Driver Version 1.20.00.13"
#define ARCMSR_SCSI_INITIATOR_ID 255
#define ARCMSR_MAX_XFER_SECTORS 512
#define ARCMSR_MAX_TARGETID 17
#define ARCMSR_MAX_TARGETLUN 8
#define ARCMSR_MAX_CMD_PERLUN ARCMSR_MAX_OUTSTANDING_CMD
#define ARCMSR_MAX_QBUFFER 4096
#define ARCMSR_MAX_SG_ENTRIES 38
/*
*******************************************************************************
** split 64bits dma addressing
*******************************************************************************
*/
#define dma_addr_hi32(addr) (uint32_t) ((addr>>16)>>16)
#define dma_addr_lo32(addr) (uint32_t) (addr & 0xffffffff)
/*
*******************************************************************************
** MESSAGE CONTROL CODE
*******************************************************************************
*/
struct CMD_MESSAGE
{
uint32_t HeaderLength;
uint8_t Signature[8];
uint32_t Timeout;
uint32_t ControlCode;
uint32_t ReturnCode;
uint32_t Length;
};
/*
*******************************************************************************
** IOP Message Transfer Data for user space
*******************************************************************************
*/
struct CMD_MESSAGE_FIELD
{
struct CMD_MESSAGE cmdmessage;
uint8_t messagedatabuffer[1032];
};
/* IOP message transfer */
#define ARCMSR_MESSAGE_FAIL 0x0001
/* DeviceType */
#define ARECA_SATA_RAID 0x90000000
/* FunctionCode */
#define FUNCTION_READ_RQBUFFER 0x0801
#define FUNCTION_WRITE_WQBUFFER 0x0802
#define FUNCTION_CLEAR_RQBUFFER 0x0803
#define FUNCTION_CLEAR_WQBUFFER 0x0804
#define FUNCTION_CLEAR_ALLQBUFFER 0x0805
#define FUNCTION_RETURN_CODE_3F 0x0806
#define FUNCTION_SAY_HELLO 0x0807
#define FUNCTION_SAY_GOODBYE 0x0808
#define FUNCTION_FLUSH_ADAPTER_CACHE 0x0809
/* ARECA IO CONTROL CODE*/
#define ARCMSR_MESSAGE_READ_RQBUFFER \
ARECA_SATA_RAID | FUNCTION_READ_RQBUFFER
#define ARCMSR_MESSAGE_WRITE_WQBUFFER \
ARECA_SATA_RAID | FUNCTION_WRITE_WQBUFFER
#define ARCMSR_MESSAGE_CLEAR_RQBUFFER \
ARECA_SATA_RAID | FUNCTION_CLEAR_RQBUFFER
#define ARCMSR_MESSAGE_CLEAR_WQBUFFER \
ARECA_SATA_RAID | FUNCTION_CLEAR_WQBUFFER
#define ARCMSR_MESSAGE_CLEAR_ALLQBUFFER \
ARECA_SATA_RAID | FUNCTION_CLEAR_ALLQBUFFER
#define ARCMSR_MESSAGE_RETURN_CODE_3F \
ARECA_SATA_RAID | FUNCTION_RETURN_CODE_3F
#define ARCMSR_MESSAGE_SAY_HELLO \
ARECA_SATA_RAID | FUNCTION_SAY_HELLO
#define ARCMSR_MESSAGE_SAY_GOODBYE \
ARECA_SATA_RAID | FUNCTION_SAY_GOODBYE
#define ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE \
ARECA_SATA_RAID | FUNCTION_FLUSH_ADAPTER_CACHE
/* ARECA IOCTL ReturnCode */
#define ARCMSR_MESSAGE_RETURNCODE_OK 0x00000001
#define ARCMSR_MESSAGE_RETURNCODE_ERROR 0x00000006
#define ARCMSR_MESSAGE_RETURNCODE_3F 0x0000003F
/*
*************************************************************
** structure for holding DMA address data
*************************************************************
*/
#define IS_SG64_ADDR 0x01000000 /* bit24 */
struct SG32ENTRY
{
uint32_t length;
uint32_t address;
};
struct SG64ENTRY
{
uint32_t length;
uint32_t address;
uint32_t addresshigh;
};
struct SGENTRY_UNION
{
union
{
struct SG32ENTRY sg32entry;
struct SG64ENTRY sg64entry;
}u;
};
/*
********************************************************************
** Q Buffer of IOP Message Transfer
********************************************************************
*/
struct QBUFFER
{
uint32_t data_len;
uint8_t data[124];
};
/*
*******************************************************************************
** FIRMWARE INFO
*******************************************************************************
*/
struct FIRMWARE_INFO
{
uint32_t signature; /*0, 00-03*/
uint32_t request_len; /*1, 04-07*/
uint32_t numbers_queue; /*2, 08-11*/
uint32_t sdram_size; /*3, 12-15*/
uint32_t ide_channels; /*4, 16-19*/
char vendor[40]; /*5, 20-59*/
char model[8]; /*15, 60-67*/
char firmware_ver[16]; /*17, 68-83*/
char device_map[16]; /*21, 84-99*/
};
/* signature of set and get firmware config */
#define ARCMSR_SIGNATURE_GET_CONFIG 0x87974060
#define ARCMSR_SIGNATURE_SET_CONFIG 0x87974063
/* message code of inbound message register */
#define ARCMSR_INBOUND_MESG0_NOP 0x00000000
#define ARCMSR_INBOUND_MESG0_GET_CONFIG 0x00000001
#define ARCMSR_INBOUND_MESG0_SET_CONFIG 0x00000002
#define ARCMSR_INBOUND_MESG0_ABORT_CMD 0x00000003
#define ARCMSR_INBOUND_MESG0_STOP_BGRB 0x00000004
#define ARCMSR_INBOUND_MESG0_FLUSH_CACHE 0x00000005
#define ARCMSR_INBOUND_MESG0_START_BGRB 0x00000006
#define ARCMSR_INBOUND_MESG0_CHK331PENDING 0x00000007
#define ARCMSR_INBOUND_MESG0_SYNC_TIMER 0x00000008
/* doorbell interrupt generator */
#define ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK 0x00000001
#define ARCMSR_INBOUND_DRIVER_DATA_READ_OK 0x00000002
#define ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK 0x00000001
#define ARCMSR_OUTBOUND_IOP331_DATA_READ_OK 0x00000002
/* ccb areca cdb flag */
#define ARCMSR_CCBPOST_FLAG_SGL_BSIZE 0x80000000
#define ARCMSR_CCBPOST_FLAG_IAM_BIOS 0x40000000
#define ARCMSR_CCBREPLY_FLAG_IAM_BIOS 0x40000000
#define ARCMSR_CCBREPLY_FLAG_ERROR 0x10000000
/* outbound firmware ok */
#define ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK 0x80000000
/*
*******************************************************************************
** ARECA SCSI COMMAND DESCRIPTOR BLOCK size 0x1F8 (504)
*******************************************************************************
*/
struct ARCMSR_CDB
{
uint8_t Bus;
uint8_t TargetID;
uint8_t LUN;
uint8_t Function;
uint8_t CdbLength;
uint8_t sgcount;
uint8_t Flags;
#define ARCMSR_CDB_FLAG_SGL_BSIZE 0x01
#define ARCMSR_CDB_FLAG_BIOS 0x02
#define ARCMSR_CDB_FLAG_WRITE 0x04
#define ARCMSR_CDB_FLAG_SIMPLEQ 0x00
#define ARCMSR_CDB_FLAG_HEADQ 0x08
#define ARCMSR_CDB_FLAG_ORDEREDQ 0x10
uint8_t Reserved1;
uint32_t Context;
uint32_t DataLength;
uint8_t Cdb[16];
uint8_t DeviceStatus;
#define ARCMSR_DEV_CHECK_CONDITION 0x02
#define ARCMSR_DEV_SELECT_TIMEOUT 0xF0
#define ARCMSR_DEV_ABORTED 0xF1
#define ARCMSR_DEV_INIT_FAIL 0xF2
uint8_t SenseData[15];
union
{
struct SG32ENTRY sg32entry[ARCMSR_MAX_SG_ENTRIES];
struct SG64ENTRY sg64entry[ARCMSR_MAX_SG_ENTRIES];
} u;
};
/*
*******************************************************************************
** Messaging Unit (MU) of the Intel R 80331 I/O processor (80331)
*******************************************************************************
*/
struct MessageUnit
{
uint32_t resrved0[4]; /*0000 000F*/
uint32_t inbound_msgaddr0; /*0010 0013*/
uint32_t inbound_msgaddr1; /*0014 0017*/
uint32_t outbound_msgaddr0; /*0018 001B*/
uint32_t outbound_msgaddr1; /*001C 001F*/
uint32_t inbound_doorbell; /*0020 0023*/
uint32_t inbound_intstatus; /*0024 0027*/
uint32_t inbound_intmask; /*0028 002B*/
uint32_t outbound_doorbell; /*002C 002F*/
uint32_t outbound_intstatus; /*0030 0033*/
uint32_t outbound_intmask; /*0034 0037*/
uint32_t reserved1[2]; /*0038 003F*/
uint32_t inbound_queueport; /*0040 0043*/
uint32_t outbound_queueport; /*0044 0047*/
uint32_t reserved2[2]; /*0048 004F*/
uint32_t reserved3[492]; /*0050 07FF 492*/
uint32_t reserved4[128]; /*0800 09FF 128*/
uint32_t message_rwbuffer[256]; /*0a00 0DFF 256*/
uint32_t message_wbuffer[32]; /*0E00 0E7F 32*/
uint32_t reserved5[32]; /*0E80 0EFF 32*/
uint32_t message_rbuffer[32]; /*0F00 0F7F 32*/
uint32_t reserved6[32]; /*0F80 0FFF 32*/
};
/*
*******************************************************************************
** Adapter Control Block
*******************************************************************************
*/
struct AdapterControlBlock
{
struct pci_dev * pdev;
struct Scsi_Host * host;
unsigned long vir2phy_offset;
/* Offset is used in making arc cdb physical to virtual calculations */
uint32_t outbound_int_enable;
struct MessageUnit __iomem * pmu;
/* message unit ATU inbound base address0 */
uint32_t acb_flags;
#define ACB_F_SCSISTOPADAPTER 0x0001
#define ACB_F_MSG_STOP_BGRB 0x0002
/* stop RAID background rebuild */
#define ACB_F_MSG_START_BGRB 0x0004
/* stop RAID background rebuild */
#define ACB_F_IOPDATA_OVERFLOW 0x0008
/* iop message data rqbuffer overflow */
#define ACB_F_MESSAGE_WQBUFFER_CLEARED 0x0010
/* message clear wqbuffer */
#define ACB_F_MESSAGE_RQBUFFER_CLEARED 0x0020
/* message clear rqbuffer */
#define ACB_F_MESSAGE_WQBUFFER_READED 0x0040
#define ACB_F_BUS_RESET 0x0080
#define ACB_F_IOP_INITED 0x0100
/* iop init */
struct CommandControlBlock * pccb_pool[ARCMSR_MAX_FREECCB_NUM];
/* used for memory free */
struct list_head ccb_free_list;
/* head of free ccb list */
atomic_t ccboutstandingcount;
void * dma_coherent;
/* dma_coherent used for memory free */
dma_addr_t dma_coherent_handle;
/* dma_coherent_handle used for memory free */
uint8_t rqbuffer[ARCMSR_MAX_QBUFFER];
/* data collection buffer for read from 80331 */
int32_t rqbuf_firstindex;
/* first of read buffer */
int32_t rqbuf_lastindex;
/* last of read buffer */
uint8_t wqbuffer[ARCMSR_MAX_QBUFFER];
/* data collection buffer for write to 80331 */
int32_t wqbuf_firstindex;
/* first of write buffer */
int32_t wqbuf_lastindex;
/* last of write buffer */
uint8_t devstate[ARCMSR_MAX_TARGETID][ARCMSR_MAX_TARGETLUN];
/* id0 ..... id15, lun0...lun7 */
#define ARECA_RAID_GONE 0x55
#define ARECA_RAID_GOOD 0xaa
uint32_t num_resets;
uint32_t num_aborts;
uint32_t firm_request_len;
uint32_t firm_numbers_queue;
uint32_t firm_sdram_size;
uint32_t firm_hd_channels;
char firm_model[12];
char firm_version[20];
};/* HW_DEVICE_EXTENSION */
/*
*******************************************************************************
** Command Control Block
** this CCB length must be 32 bytes boundary
*******************************************************************************
*/
struct CommandControlBlock
{
struct ARCMSR_CDB arcmsr_cdb;
/*
** 0-503 (size of CDB=504):
** arcmsr messenger scsi command descriptor size 504 bytes
*/
uint32_t cdb_shifted_phyaddr;
/* 504-507 */
uint32_t reserved1;
/* 508-511 */
#if BITS_PER_LONG == 64
/* ======================512+64 bytes======================== */
struct list_head list;
/* 512-527 16 bytes next/prev ptrs for ccb lists */
struct scsi_cmnd * pcmd;
/* 528-535 8 bytes pointer of linux scsi command */
struct AdapterControlBlock * acb;
/* 536-543 8 bytes pointer of acb */
uint16_t ccb_flags;
/* 544-545 */
#define CCB_FLAG_READ 0x0000
#define CCB_FLAG_WRITE 0x0001
#define CCB_FLAG_ERROR 0x0002
#define CCB_FLAG_FLUSHCACHE 0x0004
#define CCB_FLAG_MASTER_ABORTED 0x0008
uint16_t startdone;
/* 546-547 */
#define ARCMSR_CCB_DONE 0x0000
#define ARCMSR_CCB_START 0x55AA
#define ARCMSR_CCB_ABORTED 0xAA55
#define ARCMSR_CCB_ILLEGAL 0xFFFF
uint32_t reserved2[7];
/* 548-551 552-555 556-559 560-563 564-567 568-571 572-575 */
#else
/* ======================512+32 bytes======================== */
struct list_head list;
/* 512-519 8 bytes next/prev ptrs for ccb lists */
struct scsi_cmnd * pcmd;
/* 520-523 4 bytes pointer of linux scsi command */
struct AdapterControlBlock * acb;
/* 524-527 4 bytes pointer of acb */
uint16_t ccb_flags;
/* 528-529 */
#define CCB_FLAG_READ 0x0000
#define CCB_FLAG_WRITE 0x0001
#define CCB_FLAG_ERROR 0x0002
#define CCB_FLAG_FLUSHCACHE 0x0004
#define CCB_FLAG_MASTER_ABORTED 0x0008
uint16_t startdone;
/* 530-531 */
#define ARCMSR_CCB_DONE 0x0000
#define ARCMSR_CCB_START 0x55AA
#define ARCMSR_CCB_ABORTED 0xAA55
#define ARCMSR_CCB_ILLEGAL 0xFFFF
uint32_t reserved2[3];
/* 532-535 536-539 540-543 */
#endif
/* ========================================================== */
};
/*
*******************************************************************************
** ARECA SCSI sense data
*******************************************************************************
*/
struct SENSE_DATA
{
uint8_t ErrorCode:7;
#define SCSI_SENSE_CURRENT_ERRORS 0x70
#define SCSI_SENSE_DEFERRED_ERRORS 0x71
uint8_t Valid:1;
uint8_t SegmentNumber;
uint8_t SenseKey:4;
uint8_t Reserved:1;
uint8_t IncorrectLength:1;
uint8_t EndOfMedia:1;
uint8_t FileMark:1;
uint8_t Information[4];
uint8_t AdditionalSenseLength;
uint8_t CommandSpecificInformation[4];
uint8_t AdditionalSenseCode;
uint8_t AdditionalSenseCodeQualifier;
uint8_t FieldReplaceableUnitCode;
uint8_t SenseKeySpecific[3];
};
/*
*******************************************************************************
** Outbound Interrupt Status Register - OISR
*******************************************************************************
*/
#define ARCMSR_MU_OUTBOUND_INTERRUPT_STATUS_REG 0x30
#define ARCMSR_MU_OUTBOUND_PCI_INT 0x10
#define ARCMSR_MU_OUTBOUND_POSTQUEUE_INT 0x08
#define ARCMSR_MU_OUTBOUND_DOORBELL_INT 0x04
#define ARCMSR_MU_OUTBOUND_MESSAGE1_INT 0x02
#define ARCMSR_MU_OUTBOUND_MESSAGE0_INT 0x01
#define ARCMSR_MU_OUTBOUND_HANDLE_INT \
(ARCMSR_MU_OUTBOUND_MESSAGE0_INT \
|ARCMSR_MU_OUTBOUND_MESSAGE1_INT \
|ARCMSR_MU_OUTBOUND_DOORBELL_INT \
|ARCMSR_MU_OUTBOUND_POSTQUEUE_INT \
|ARCMSR_MU_OUTBOUND_PCI_INT)
/*
*******************************************************************************
** Outbound Interrupt Mask Register - OIMR
*******************************************************************************
*/
#define ARCMSR_MU_OUTBOUND_INTERRUPT_MASK_REG 0x34
#define ARCMSR_MU_OUTBOUND_PCI_INTMASKENABLE 0x10
#define ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE 0x08
#define ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE 0x04
#define ARCMSR_MU_OUTBOUND_MESSAGE1_INTMASKENABLE 0x02
#define ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE 0x01
#define ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE 0x1F
extern void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb);
extern struct class_device_attribute *arcmsr_host_attrs[];
extern int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb);
void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb);

392
drivers/scsi/arcmsr/arcmsr_attr.c Normal file
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/*
*******************************************************************************
** O.S : Linux
** FILE NAME : arcmsr_attr.c
** BY : Erich Chen
** Description: attributes exported to sysfs and device host
*******************************************************************************
** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
**
** Web site: www.areca.com.tw
** E-mail: erich@areca.com.tw
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License version 2 as
** published by the Free Software Foundation.
** 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.
*******************************************************************************
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************
** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
*******************************************************************************
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
#include "arcmsr.h"
struct class_device_attribute *arcmsr_host_attrs[];
static ssize_t
arcmsr_sysfs_iop_message_read(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 *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
struct MessageUnit __iomem *reg = acb->pmu;
uint8_t *pQbuffer,*ptmpQbuffer;
int32_t allxfer_len = 0;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
/* do message unit read. */
ptmpQbuffer = (uint8_t *)buf;
while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
&& (allxfer_len < 1031)) {
pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
memcpy(ptmpQbuffer, pQbuffer, 1);
acb->rqbuf_firstindex++;
acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
ptmpQbuffer++;
allxfer_len++;
}
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
&reg->message_rbuffer;
uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
int32_t iop_len;
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
iop_len = readl(&prbuffer->data_len);
while (iop_len > 0) {
acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
acb->rqbuf_lastindex++;
acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
iop_data++;
iop_len--;
}
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
&reg->inbound_doorbell);
}
return (allxfer_len);
}
static ssize_t
arcmsr_sysfs_iop_message_write(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 *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
uint8_t *pQbuffer, *ptmpuserbuffer;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (count > 1032)
return -EINVAL;
/* do message unit write. */
ptmpuserbuffer = (uint8_t *)buf;
user_len = (int32_t)count;
wqbuf_lastindex = acb->wqbuf_lastindex;
wqbuf_firstindex = acb->wqbuf_firstindex;
if (wqbuf_lastindex != wqbuf_firstindex) {
arcmsr_post_Qbuffer(acb);
return 0; /*need retry*/
} else {
my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
&(ARCMSR_MAX_QBUFFER - 1);
if (my_empty_len >= user_len) {
while (user_len > 0) {
pQbuffer =
&acb->wqbuffer[acb->wqbuf_lastindex];
memcpy(pQbuffer, ptmpuserbuffer, 1);
acb->wqbuf_lastindex++;
acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
ptmpuserbuffer++;
user_len--;
}
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
acb->acb_flags &=
~ACB_F_MESSAGE_WQBUFFER_CLEARED;
arcmsr_post_Qbuffer(acb);
}
return count;
} else {
return 0; /*need retry*/
}
}
}
static ssize_t
arcmsr_sysfs_iop_message_clear(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 *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
struct MessageUnit __iomem *reg = acb->pmu;
uint8_t *pQbuffer;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
, &reg->inbound_doorbell);
}
acb->acb_flags |=
(ACB_F_MESSAGE_WQBUFFER_CLEARED
| ACB_F_MESSAGE_RQBUFFER_CLEARED
| ACB_F_MESSAGE_WQBUFFER_READED);
acb->rqbuf_firstindex = 0;
acb->rqbuf_lastindex = 0;
acb->wqbuf_firstindex = 0;
acb->wqbuf_lastindex = 0;
pQbuffer = acb->rqbuffer;
memset(pQbuffer, 0, sizeof (struct QBUFFER));
pQbuffer = acb->wqbuffer;
memset(pQbuffer, 0, sizeof (struct QBUFFER));
return 1;
}
static struct bin_attribute arcmsr_sysfs_message_read_attr = {
.attr = {
.name = "mu_read",
.mode = S_IRUSR ,
.owner = THIS_MODULE,
},
.size = 1032,
.read = arcmsr_sysfs_iop_message_read,
};
static struct bin_attribute arcmsr_sysfs_message_write_attr = {
.attr = {
.name = "mu_write",
.mode = S_IWUSR,
.owner = THIS_MODULE,
},
.size = 1032,
.write = arcmsr_sysfs_iop_message_write,
};
static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
.attr = {
.name = "mu_clear",
.mode = S_IWUSR,
.owner = THIS_MODULE,
},
.size = 1,
.write = arcmsr_sysfs_iop_message_clear,
};
int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
{
struct Scsi_Host *host = acb->host;
int error;
error = sysfs_create_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_read_attr);
if (error) {
printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
goto error_bin_file_message_read;
}
error = sysfs_create_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_write_attr);
if (error) {
printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
goto error_bin_file_message_write;
}
error = sysfs_create_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_clear_attr);
if (error) {
printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
goto error_bin_file_message_clear;
}
return 0;
error_bin_file_message_clear:
error = sysfs_remove_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_write_attr);
if (error)
printk(KERN_ERR "arcmsr: sysfs_remove_bin_file mu_write failed\n");
error_bin_file_message_write:
error = sysfs_remove_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_read_attr);
if (error)
printk(KERN_ERR "arcmsr: sysfs_remove_bin_file mu_read failed\n");
error_bin_file_message_read:
return error;
}
void
arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
struct Scsi_Host *host = acb->host;
int error;
error = sysfs_remove_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_clear_attr);
if (error)
printk(KERN_ERR "arcmsr: free sysfs mu_clear failed\n");
error = sysfs_remove_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_write_attr);
if (error)
printk(KERN_ERR "arcmsr: free sysfs mu_write failed\n");
error = sysfs_remove_bin_file(&host->shost_classdev.kobj,
&arcmsr_sysfs_message_read_attr);
if (error)
printk(KERN_ERR "arcmsr: free sysfss mu_read failed\n");
}
static ssize_t
arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) {
return snprintf(buf, PAGE_SIZE,
"ARCMSR: %s\n",
ARCMSR_DRIVER_VERSION);
}
static ssize_t
arcmsr_attr_host_driver_posted_cmd(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"Current commands posted: %4d\n",
atomic_read(&acb->ccboutstandingcount));
}
static ssize_t
arcmsr_attr_host_driver_reset(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"SCSI Host Resets: %4d\n",
acb->num_resets);
}
static ssize_t
arcmsr_attr_host_driver_abort(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"SCSI Aborts/Timeouts: %4d\n",
acb->num_aborts);
}
static ssize_t
arcmsr_attr_host_fw_model(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"Adapter Model: %s\n",
acb->firm_model);
}
static ssize_t
arcmsr_attr_host_fw_version(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"Firmware Version: %s\n",
acb->firm_version);
}
static ssize_t
arcmsr_attr_host_fw_request_len(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"Reguest Lenth: %4d\n",
acb->firm_request_len);
}
static ssize_t
arcmsr_attr_host_fw_numbers_queue(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"Numbers of Queue: %4d\n",
acb->firm_numbers_queue);
}
static ssize_t
arcmsr_attr_host_fw_sdram_size(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"SDRAM Size: %4d\n",
acb->firm_sdram_size);
}
static ssize_t
arcmsr_attr_host_fw_hd_channels(struct class_device *cdev, char *buf) {
struct Scsi_Host *host = class_to_shost(cdev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
return snprintf(buf, PAGE_SIZE,
"Hard Disk Channels: %4d\n",
acb->firm_hd_channels);
}
static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
struct class_device_attribute *arcmsr_host_attrs[] = {
&class_device_attr_host_driver_version,
&class_device_attr_host_driver_posted_cmd,
&class_device_attr_host_driver_reset,
&class_device_attr_host_driver_abort,
&class_device_attr_host_fw_model,
&class_device_attr_host_fw_version,
&class_device_attr_host_fw_request_len,
&class_device_attr_host_fw_numbers_queue,
&class_device_attr_host_fw_sdram_size,
&class_device_attr_host_fw_hd_channels,
NULL,
};

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drivers/scsi/arcmsr/arcmsr_hba.c Normal file
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