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linux/drivers/scsi/a100u2w.h
Alan Cox 4023c47478 [SCSI] a100u2w: Convert into Linux style 
I was investigating strange driver behaviour and thought that readable
code and proper visible types might help explain why it didn't work right
the moment a second SCB was outstanding to the controller. I was right

- Cleanup, linuxise, demacro
- Remove the BSD dual licence on the new work
- Switch the if ALPHA to if __LP64__. (struct size is then right
elsewhere) and then to CONFIG_64BIT as per Christoph's request
- Fix the recursive locking on a reset. This is the only actual real code
change (I hope ;)).

I'm not clear what the right way to handle the BIOS param stuff is on n
on x86-32/64. Using phys_to_virt and stuff is ugly and probably doesn't
make sense elsewhere

Still has a couple of odd things - and there seems to be a commonly shared
EEPROM handling error several drivers have. Roughly speaking several SCSI
drivers go

	try and read EEPROM
	It failed..
	Write any changes between the default and the data we read

	Which is great as for some paths we've no idea what was in
before, so each boot won't write it all back, won't checksum but will
repeat the bug

Also it can still sleep for a second with IRQ off, and there is some
dubious looking error path locking marked FIXME in case anyone feels
inspired to work on it. Not a newly introduced bug, and at least its now
marked.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-06-17 16:09:29 -05:00

372 lines
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/*
* Initio A100 device driver for Linux.
*
* Copyright (c) 1994-1998 Initio Corporation
* All rights reserved.
*
* 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, 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; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* Revision History:
* 06/18/98 HL, Initial production Version 1.02
* 12/19/98 bv, Use spinlocks for 2.1.95 and up
* 06/25/02 Doug Ledford <dledford@redhat.com>
* - This and the i60uscsi.h file are almost identical,
* merged them into a single header used by both .c files.
* 14/06/07 Alan Cox <alan@redhat.com>
* - Grand cleanup and Linuxisation
*/
#define inia100_REVID "Initio INI-A100U2W SCSI device driver; Revision: 1.02d"
#if 1
#define ORC_MAXQUEUE 245
#define ORC_MAXTAGS 64
#else
#define ORC_MAXQUEUE 25
#define ORC_MAXTAGS 8
#endif
#define TOTAL_SG_ENTRY 32
#define MAX_TARGETS 16
#define IMAX_CDB 15
#define SENSE_SIZE 14
/************************************************************************/
/* Scatter-Gather Element Structure */
/************************************************************************/
struct orc_sgent {
u32 base; /* Data Pointer */
u32 length; /* Data Length */
};
/* SCSI related definition */
#define DISC_NOT_ALLOW 0x80 /* Disconnect is not allowed */
#define DISC_ALLOW 0xC0 /* Disconnect is allowed */
#define ORC_OFFSET_SCB 16
#define ORC_MAX_SCBS 250
#define MAX_CHANNELS 2
#define MAX_ESCB_ELE 64
#define TCF_DRV_255_63 0x0400
/********************************************************/
/* Orchid Host Command Set */
/********************************************************/
#define ORC_CMD_NOP 0x00 /* Host command - NOP */
#define ORC_CMD_VERSION 0x01 /* Host command - Get F/W version */
#define ORC_CMD_ECHO 0x02 /* Host command - ECHO */
#define ORC_CMD_SET_NVM 0x03 /* Host command - Set NVRAM */
#define ORC_CMD_GET_NVM 0x04 /* Host command - Get NVRAM */
#define ORC_CMD_GET_BUS_STATUS 0x05 /* Host command - Get SCSI bus status */
#define ORC_CMD_ABORT_SCB 0x06 /* Host command - Abort SCB */
#define ORC_CMD_ISSUE_SCB 0x07 /* Host command - Issue SCB */
/********************************************************/
/* Orchid Register Set */
/********************************************************/
#define ORC_GINTS 0xA0 /* Global Interrupt Status */
#define QINT 0x04 /* Reply Queue Interrupt */
#define ORC_GIMSK 0xA1 /* Global Interrupt MASK */
#define MQINT 0x04 /* Mask Reply Queue Interrupt */
#define ORC_GCFG 0xA2 /* Global Configure */
#define EEPRG 0x01 /* Enable EEPROM programming */
#define ORC_GSTAT 0xA3 /* Global status */
#define WIDEBUS 0x10 /* Wide SCSI Devices connected */
#define ORC_HDATA 0xA4 /* Host Data */
#define ORC_HCTRL 0xA5 /* Host Control */
#define SCSIRST 0x80 /* SCSI bus reset */
#define HDO 0x40 /* Host data out */
#define HOSTSTOP 0x02 /* Host stop RISC engine */
#define DEVRST 0x01 /* Device reset */
#define ORC_HSTUS 0xA6 /* Host Status */
#define HDI 0x02 /* Host data in */
#define RREADY 0x01 /* RISC engine is ready to receive */
#define ORC_NVRAM 0xA7 /* Nvram port address */
#define SE2CS 0x008
#define SE2CLK 0x004
#define SE2DO 0x002
#define SE2DI 0x001
#define ORC_PQUEUE 0xA8 /* Posting queue FIFO */
#define ORC_PQCNT 0xA9 /* Posting queue FIFO Cnt */
#define ORC_RQUEUE 0xAA /* Reply queue FIFO */
#define ORC_RQUEUECNT 0xAB /* Reply queue FIFO Cnt */
#define ORC_FWBASEADR 0xAC /* Firmware base address */
#define ORC_EBIOSADR0 0xB0 /* External Bios address */
#define ORC_EBIOSADR1 0xB1 /* External Bios address */
#define ORC_EBIOSADR2 0xB2 /* External Bios address */
#define ORC_EBIOSDATA 0xB3 /* External Bios address */
#define ORC_SCBSIZE 0xB7 /* SCB size register */
#define ORC_SCBBASE0 0xB8 /* SCB base address 0 */
#define ORC_SCBBASE1 0xBC /* SCB base address 1 */
#define ORC_RISCCTL 0xE0 /* RISC Control */
#define PRGMRST 0x002
#define DOWNLOAD 0x001
#define ORC_PRGMCTR0 0xE2 /* RISC program counter */
#define ORC_PRGMCTR1 0xE3 /* RISC program counter */
#define ORC_RISCRAM 0xEC /* RISC RAM data port 4 bytes */
struct orc_extended_scb { /* Extended SCB */
struct orc_sgent sglist[TOTAL_SG_ENTRY]; /*0 Start of SG list */
struct scsi_cmnd *srb; /*50 SRB Pointer */
};
/***********************************************************************
SCSI Control Block
0x40 bytes long, the last 8 are user bytes
************************************************************************/
struct orc_scb { /* Scsi_Ctrl_Blk */
u8 opcode; /*00 SCB command code&residual */
u8 flags; /*01 SCB Flags */
u8 target; /*02 Target Id */
u8 lun; /*03 Lun */
u32 reserved0; /*04 Reserved for ORCHID must 0 */
u32 xferlen; /*08 Data Transfer Length */
u32 reserved1; /*0C Reserved for ORCHID must 0 */
u32 sg_len; /*10 SG list # * 8 */
u32 sg_addr; /*14 SG List Buf physical Addr */
u32 sg_addrhigh; /*18 SG Buffer high physical Addr */
u8 hastat; /*1C Host Status */
u8 tastat; /*1D Target Status */
u8 status; /*1E SCB status */
u8 link; /*1F Link pointer, default 0xFF */
u8 sense_len; /*20 Sense Allocation Length */
u8 cdb_len; /*21 CDB Length */
u8 ident; /*22 Identify */
u8 tag_msg; /*23 Tag Message */
u8 cdb[IMAX_CDB]; /*24 SCSI CDBs */
u8 scbidx; /*3C Index for this ORCSCB */
u32 sense_addr; /*34 Sense Buffer physical Addr */
struct orc_extended_scb *escb; /*38 Extended SCB Pointer */
/* 64bit pointer or 32bit pointer + reserved ? */
#ifndef CONFIG_64BIT
u8 reserved2[4]; /*3E Reserved for Driver use */
#endif
};
/* Opcodes of ORCSCB_Opcode */
#define ORC_EXECSCSI 0x00 /* SCSI initiator command with residual */
#define ORC_BUSDEVRST 0x01 /* SCSI Bus Device Reset */
/* Status of ORCSCB_Status */
#define ORCSCB_COMPLETE 0x00 /* SCB request completed */
#define ORCSCB_POST 0x01 /* SCB is posted by the HOST */
/* Bit Definition for ORCSCB_Flags */
#define SCF_DISINT 0x01 /* Disable HOST interrupt */
#define SCF_DIR 0x18 /* Direction bits */
#define SCF_NO_DCHK 0x00 /* Direction determined by SCSI */
#define SCF_DIN 0x08 /* From Target to Initiator */
#define SCF_DOUT 0x10 /* From Initiator to Target */
#define SCF_NO_XF 0x18 /* No data transfer */
#define SCF_POLL 0x40
/* Error Codes for ORCSCB_HaStat */
#define HOST_SEL_TOUT 0x11
#define HOST_DO_DU 0x12
#define HOST_BUS_FREE 0x13
#define HOST_BAD_PHAS 0x14
#define HOST_INV_CMD 0x16
#define HOST_SCSI_RST 0x1B
#define HOST_DEV_RST 0x1C
/* Error Codes for ORCSCB_TaStat */
#define TARGET_CHK_COND 0x02
#define TARGET_BUSY 0x08
#define TARGET_TAG_FULL 0x28
/***********************************************************************
Target Device Control Structure
**********************************************************************/
struct orc_target {
u8 TCS_DrvDASD; /* 6 */
u8 TCS_DrvSCSI; /* 7 */
u8 TCS_DrvHead; /* 8 */
u16 TCS_DrvFlags; /* 4 */
u8 TCS_DrvSector; /* 7 */
};
/* Bit Definition for TCF_DrvFlags */
#define TCS_DF_NODASD_SUPT 0x20 /* Suppress OS/2 DASD Mgr support */
#define TCS_DF_NOSCSI_SUPT 0x40 /* Suppress OS/2 SCSI Mgr support */
/***********************************************************************
Host Adapter Control Structure
************************************************************************/
struct orc_host {
unsigned long base; /* Base address */
u8 index; /* Index (Channel)*/
u8 scsi_id; /* H/A SCSI ID */
u8 BIOScfg; /*BIOS configuration */
u8 flags;
u8 max_targets; /* SCSI0MAXTags */
struct orc_scb *scb_virt; /* Virtual Pointer to SCB array */
dma_addr_t scb_phys; /* Scb Physical address */
struct orc_extended_scb *escb_virt; /* Virtual pointer to ESCB Scatter list */
dma_addr_t escb_phys; /* scatter list Physical address */
u8 target_flag[16]; /* target configuration, TCF_EN_TAG */
u8 max_tags[16]; /* ORC_MAX_SCBS */
u32 allocation_map[MAX_CHANNELS][8]; /* Max STB is 256, So 256/32 */
spinlock_t allocation_lock;
struct pci_dev *pdev;
};
/* Bit Definition for HCS_Flags */
#define HCF_SCSI_RESET 0x01 /* SCSI BUS RESET */
#define HCF_PARITY 0x02 /* parity card */
#define HCF_LVDS 0x10 /* parity card */
/* Bit Definition for TargetFlag */
#define TCF_EN_255 0x08
#define TCF_EN_TAG 0x10
#define TCF_BUSY 0x20
#define TCF_DISCONNECT 0x40
#define TCF_SPIN_UP 0x80
/* Bit Definition for HCS_AFlags */
#define HCS_AF_IGNORE 0x01 /* Adapter ignore */
#define HCS_AF_DISABLE_RESET 0x10 /* Adapter disable reset */
#define HCS_AF_DISABLE_ADPT 0x80 /* Adapter disable */
struct orc_nvram {
/*----------header ---------------*/
u8 SubVendorID0; /* 00 - Sub Vendor ID */
u8 SubVendorID1; /* 00 - Sub Vendor ID */
u8 SubSysID0; /* 02 - Sub System ID */
u8 SubSysID1; /* 02 - Sub System ID */
u8 SubClass; /* 04 - Sub Class */
u8 VendorID0; /* 05 - Vendor ID */
u8 VendorID1; /* 05 - Vendor ID */
u8 DeviceID0; /* 07 - Device ID */
u8 DeviceID1; /* 07 - Device ID */
u8 Reserved0[2]; /* 09 - Reserved */
u8 revision; /* 0B - revision of data structure */
/* ----Host Adapter Structure ---- */
u8 NumOfCh; /* 0C - Number of SCSI channel */
u8 BIOSConfig1; /* 0D - BIOS configuration 1 */
u8 BIOSConfig2; /* 0E - BIOS boot channel&target ID */
u8 BIOSConfig3; /* 0F - BIOS configuration 3 */
/* ----SCSI channel Structure ---- */
/* from "CTRL-I SCSI Host Adapter SetUp menu " */
u8 scsi_id; /* 10 - Channel 0 SCSI ID */
u8 SCSI0Config; /* 11 - Channel 0 SCSI configuration */
u8 SCSI0MaxTags; /* 12 - Channel 0 Maximum tags */
u8 SCSI0ResetTime; /* 13 - Channel 0 Reset recovering time */
u8 ReservedforChannel0[2]; /* 14 - Reserved */
/* ----SCSI target Structure ---- */
/* from "CTRL-I SCSI device SetUp menu " */
u8 Target00Config; /* 16 - Channel 0 Target 0 config */
u8 Target01Config; /* 17 - Channel 0 Target 1 config */
u8 Target02Config; /* 18 - Channel 0 Target 2 config */
u8 Target03Config; /* 19 - Channel 0 Target 3 config */
u8 Target04Config; /* 1A - Channel 0 Target 4 config */
u8 Target05Config; /* 1B - Channel 0 Target 5 config */
u8 Target06Config; /* 1C - Channel 0 Target 6 config */
u8 Target07Config; /* 1D - Channel 0 Target 7 config */
u8 Target08Config; /* 1E - Channel 0 Target 8 config */
u8 Target09Config; /* 1F - Channel 0 Target 9 config */
u8 Target0AConfig; /* 20 - Channel 0 Target A config */
u8 Target0BConfig; /* 21 - Channel 0 Target B config */
u8 Target0CConfig; /* 22 - Channel 0 Target C config */
u8 Target0DConfig; /* 23 - Channel 0 Target D config */
u8 Target0EConfig; /* 24 - Channel 0 Target E config */
u8 Target0FConfig; /* 25 - Channel 0 Target F config */
u8 SCSI1Id; /* 26 - Channel 1 SCSI ID */
u8 SCSI1Config; /* 27 - Channel 1 SCSI configuration */
u8 SCSI1MaxTags; /* 28 - Channel 1 Maximum tags */
u8 SCSI1ResetTime; /* 29 - Channel 1 Reset recovering time */
u8 ReservedforChannel1[2]; /* 2A - Reserved */
/* ----SCSI target Structure ---- */
/* from "CTRL-I SCSI device SetUp menu " */
u8 Target10Config; /* 2C - Channel 1 Target 0 config */
u8 Target11Config; /* 2D - Channel 1 Target 1 config */
u8 Target12Config; /* 2E - Channel 1 Target 2 config */
u8 Target13Config; /* 2F - Channel 1 Target 3 config */
u8 Target14Config; /* 30 - Channel 1 Target 4 config */
u8 Target15Config; /* 31 - Channel 1 Target 5 config */
u8 Target16Config; /* 32 - Channel 1 Target 6 config */
u8 Target17Config; /* 33 - Channel 1 Target 7 config */
u8 Target18Config; /* 34 - Channel 1 Target 8 config */
u8 Target19Config; /* 35 - Channel 1 Target 9 config */
u8 Target1AConfig; /* 36 - Channel 1 Target A config */
u8 Target1BConfig; /* 37 - Channel 1 Target B config */
u8 Target1CConfig; /* 38 - Channel 1 Target C config */
u8 Target1DConfig; /* 39 - Channel 1 Target D config */
u8 Target1EConfig; /* 3A - Channel 1 Target E config */
u8 Target1FConfig; /* 3B - Channel 1 Target F config */
u8 reserved[3]; /* 3C - Reserved */
/* ---------- CheckSum ---------- */
u8 CheckSum; /* 3F - Checksum of NVRam */
};
/* Bios Configuration for nvram->BIOSConfig1 */
#define NBC_BIOSENABLE 0x01 /* BIOS enable */
#define NBC_CDROM 0x02 /* Support bootable CDROM */
#define NBC_REMOVABLE 0x04 /* Support removable drive */
/* Bios Configuration for nvram->BIOSConfig2 */
#define NBB_TARGET_MASK 0x0F /* Boot SCSI target ID number */
#define NBB_CHANL_MASK 0xF0 /* Boot SCSI channel number */
/* Bit definition for nvram->SCSIConfig */
#define NCC_BUSRESET 0x01 /* Reset SCSI bus at power up */
#define NCC_PARITYCHK 0x02 /* SCSI parity enable */
#define NCC_LVDS 0x10 /* Enable LVDS */
#define NCC_ACTTERM1 0x20 /* Enable active terminator 1 */
#define NCC_ACTTERM2 0x40 /* Enable active terminator 2 */
#define NCC_AUTOTERM 0x80 /* Enable auto termination */
/* Bit definition for nvram->TargetxConfig */
#define NTC_PERIOD 0x07 /* Maximum Sync. Speed */
#define NTC_1GIGA 0x08 /* 255 head / 63 sectors (64/32) */
#define NTC_NO_SYNC 0x10 /* NO SYNC. NEGO */
#define NTC_NO_WIDESYNC 0x20 /* NO WIDE SYNC. NEGO */
#define NTC_DISC_ENABLE 0x40 /* Enable SCSI disconnect */
#define NTC_SPINUP 0x80 /* Start disk drive */
/* Default NVRam values */
#define NBC_DEFAULT (NBC_ENABLE)
#define NCC_DEFAULT (NCC_BUSRESET | NCC_AUTOTERM | NCC_PARITYCHK)
#define NCC_MAX_TAGS 0x20 /* Maximum tags per target */
#define NCC_RESET_TIME 0x0A /* SCSI RESET recovering time */
#define NTC_DEFAULT (NTC_1GIGA | NTC_NO_WIDESYNC | NTC_DISC_ENABLE)
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