- 根目录:
- drivers
- scsi
- in2000.h
/*
* in2000.h - Linux device driver definitions for the
* Always IN2000 ISA SCSI card.
*
* IMPORTANT: This file is for version 1.33 - 26/Aug/1998
*
* Copyright (c) 1996 John Shifflett, GeoLog Consulting
* john@geolog.com
* jshiffle@netcom.com
*
* 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.
*
*/
#ifndef IN2000_H
#define IN2000_H
#include <asm/io.h>
#define PROC_INTERFACE /* add code for /proc/scsi/in2000/xxx interface */
#ifdef PROC_INTERFACE
#define PROC_STATISTICS /* add code for keeping various real time stats */
#endif
#define SYNC_DEBUG /* extra info on sync negotiation printed */
#define DEBUGGING_ON /* enable command-line debugging bitmask */
#define DEBUG_DEFAULTS 0 /* default bitmask - change from command-line */
#ifdef __i386__
#define FAST_READ_IO /* No problems with these on my machine */
#define FAST_WRITE_IO
#endif
#ifdef DEBUGGING_ON
#define DB(f,a) if (hostdata->args & (f)) a;
#define CHECK_NULL(p,s) /* if (!(p)) {printk("\n"); while (1) printk("NP:%s\r",(s));} */
#else
#define DB(f,a)
#define CHECK_NULL(p,s)
#endif
#define uchar unsigned char
#define read1_io(a) (inb(hostdata->io_base+(a)))
#define read2_io(a) (inw(hostdata->io_base+(a)))
#define write1_io(b,a) (outb((b),hostdata->io_base+(a)))
#define write2_io(w,a) (outw((w),hostdata->io_base+(a)))
#ifdef __i386__
/* These inline assembly defines are derived from a patch
* sent to me by Bill Earnest. He's done a lot of very
* valuable thinking, testing, and coding during his effort
* to squeeze more speed out of this driver. I really think
* that we are doing IO at close to the maximum now with
* the fifo. (And yes, insw uses 'edi' while outsw uses
* 'esi'. Thanks Bill!)
*/
#define FAST_READ2_IO() \
({ \
int __dummy_1,__dummy_2; \
__asm__ __volatile__ ("\n \
cld \n \
orl %%ecx, %%ecx \n \
jz 1f \n \
rep \n \
insw (%%dx),%%es:(%%edi) \n \
1: " \
: "=D" (sp) ,"=c" (__dummy_1) ,"=d" (__dummy_2) /* output */ \
: "2" (f), "0" (sp), "1" (i) /* input */ \
); /* trashed */ \
})
#define FAST_WRITE2_IO() \
({ \
int __dummy_1,__dummy_2; \
__asm__ __volatile__ ("\n \
cld \n \
orl %%ecx, %%ecx \n \
jz 1f \n \
rep \n \
outsw %%ds:(%%esi),(%%dx) \n \
1: " \
: "=S" (sp) ,"=c" (__dummy_1) ,"=d" (__dummy_2)/* output */ \
: "2" (f), "0" (sp), "1" (i) /* input */ \
); /* trashed */ \
})
#endif
/* IN2000 io_port offsets */
#define IO_WD_ASR 0x00 /* R - 3393 auxstat reg */
#define ASR_INT 0x80
#define ASR_LCI 0x40
#define ASR_BSY 0x20
#define ASR_CIP 0x10
#define ASR_PE 0x02
#define ASR_DBR 0x01
#define IO_WD_ADDR 0x00 /* W - 3393 address reg */
#define IO_WD_DATA 0x01 /* R/W - rest of 3393 regs */
#define IO_FIFO 0x02 /* R/W - in2000 dual-port fifo (16 bits) */
#define IN2000_FIFO_SIZE 2048 /* fifo capacity in bytes */
#define IO_CARD_RESET 0x03 /* W - in2000 start master reset */
#define IO_FIFO_COUNT 0x04 /* R - in2000 fifo counter */
#define IO_FIFO_WRITE 0x05 /* W - clear fifo counter, start write */
#define IO_FIFO_READ 0x07 /* W - start fifo read */
#define IO_LED_OFF 0x08 /* W - turn off in2000 activity LED */
#define IO_SWITCHES 0x08 /* R - read in2000 dip switch */
#define SW_ADDR0 0x01 /* bit 0 = bit 0 of index to io addr */
#define SW_ADDR1 0x02 /* bit 1 = bit 1 of index io addr */
#define SW_DISINT 0x04 /* bit 2 true if ints disabled */
#define SW_INT0 0x08 /* bit 3 = bit 0 of index to interrupt */
#define SW_INT1 0x10 /* bit 4 = bit 1 of index to interrupt */
#define SW_INT_SHIFT 3 /* shift right this amount to right justify int bits */
#define SW_SYNC_DOS5 0x20 /* bit 5 used by Always BIOS */
#define SW_FLOPPY 0x40 /* bit 6 true if floppy enabled */
#define SW_BIT7 0x80 /* bit 7 hardwired true (ground) */
#define IO_LED_ON 0x09 /* W - turn on in2000 activity LED */
#define IO_HARDWARE 0x0a /* R - read in2000 hardware rev, stop reset */
#define IO_INTR_MASK 0x0c /* W - in2000 interrupt mask reg */
#define IMASK_WD 0x01 /* WD33c93 interrupt mask */
#define IMASK_FIFO 0x02 /* FIFO interrupt mask */
/* wd register names */
#define WD_OWN_ID 0x00
#define WD_CONTROL 0x01
#define WD_TIMEOUT_PERIOD 0x02
#define WD_CDB_1 0x03
#define WD_CDB_2 0x04
#define WD_CDB_3 0x05
#define WD_CDB_4 0x06
#define WD_CDB_5 0x07
#define WD_CDB_6 0x08
#define WD_CDB_7 0x09
#define WD_CDB_8 0x0a
#define WD_CDB_9 0x0b
#define WD_CDB_10 0x0c
#define WD_CDB_11 0x0d
#define WD_CDB_12 0x0e
#define WD_TARGET_LUN 0x0f
#define WD_COMMAND_PHASE 0x10
#define WD_SYNCHRONOUS_TRANSFER 0x11
#define WD_TRANSFER_COUNT_MSB 0x12
#define WD_TRANSFER_COUNT 0x13
#define WD_TRANSFER_COUNT_LSB 0x14
#define WD_DESTINATION_ID 0x15
#define WD_SOURCE_ID 0x16
#define WD_SCSI_STATUS 0x17
#define WD_COMMAND 0x18
#define WD_DATA 0x19
#define WD_QUEUE_TAG 0x1a
#define WD_AUXILIARY_STATUS 0x1f
/* WD commands */
#define WD_CMD_RESET 0x00
#define WD_CMD_ABORT 0x01
#define WD_CMD_ASSERT_ATN 0x02
#define WD_CMD_NEGATE_ACK 0x03
#define WD_CMD_DISCONNECT 0x04
#define WD_CMD_RESELECT 0x05
#define WD_CMD_SEL_ATN 0x06
#define WD_CMD_SEL 0x07
#define WD_CMD_SEL_ATN_XFER 0x08
#define WD_CMD_SEL_XFER 0x09
#define WD_CMD_RESEL_RECEIVE 0x0a
#define WD_CMD_RESEL_SEND 0x0b
#define WD_CMD_WAIT_SEL_RECEIVE 0x0c
#define WD_CMD_TRANS_ADDR 0x18
#define WD_CMD_TRANS_INFO 0x20
#define WD_CMD_TRANSFER_PAD 0x21
#define WD_CMD_SBT_MODE 0x80
/* SCSI Bus Phases */
#define PHS_DATA_OUT 0x00
#define PHS_DATA_IN 0x01
#define PHS_COMMAND 0x02
#define PHS_STATUS 0x03
#define PHS_MESS_OUT 0x06
#define PHS_MESS_IN 0x07
/* Command Status Register definitions */
/* reset state interrupts */
#define CSR_RESET 0x00
#define CSR_RESET_AF 0x01
/* successful completion interrupts */
#define CSR_RESELECT 0x10
#define CSR_SELECT 0x11
#define CSR_SEL_XFER_DONE 0x16
#define CSR_XFER_DONE 0x18
/* paused or aborted interrupts */
#define CSR_MSGIN 0x20
#define CSR_SDP 0x21
#define CSR_SEL_ABORT 0x22
#define CSR_RESEL_ABORT 0x25
#define CSR_RESEL_ABORT_AM 0x27
#define CSR_ABORT 0x28
/* terminated interrupts */
#define CSR_INVALID 0x40
#define CSR_UNEXP_DISC 0x41
#define CSR_TIMEOUT 0x42
#define CSR_PARITY 0x43
#define CSR_PARITY_ATN 0x44
#define CSR_BAD_STATUS 0x45
#define CSR_UNEXP 0x48
/* service required interrupts */
#define CSR_RESEL 0x80
#define CSR_RESEL_AM 0x81
#define CSR_DISC 0x85
#define CSR_SRV_REQ 0x88
/* Own ID/CDB Size register */
#define OWNID_EAF 0x08
#define OWNID_EHP 0x10
#define OWNID_RAF 0x20
#define OWNID_FS_8 0x00
#define OWNID_FS_12 0x40
#define OWNID_FS_16 0x80
/* Control register */
#define CTRL_HSP 0x01
#define CTRL_HA 0x02
#define CTRL_IDI 0x04
#define CTRL_EDI 0x08
#define CTRL_HHP 0x10
#define CTRL_POLLED 0x00
#define CTRL_BURST 0x20
#define CTRL_BUS 0x40
#define CTRL_DMA 0x80
/* Timeout Period register */
#define TIMEOUT_PERIOD_VALUE 20 /* results in 200 ms. */
/* Synchronous Transfer Register */
#define STR_FSS 0x80
/* Destination ID register */
#define DSTID_DPD 0x40
#define DATA_OUT_DIR 0
#define DATA_IN_DIR 1
#define DSTID_SCC 0x80
/* Source ID register */
#define SRCID_MASK 0x07
#define SRCID_SIV 0x08
#define SRCID_DSP 0x20
#define SRCID_ES 0x40
#define SRCID_ER 0x80
#define ILLEGAL_STATUS_BYTE 0xff
#define DEFAULT_SX_PER 500 /* (ns) fairly safe */
#define DEFAULT_SX_OFF 0 /* aka async */
#define OPTIMUM_SX_PER 252 /* (ns) best we can do (mult-of-4) */
#define OPTIMUM_SX_OFF 12 /* size of in2000 fifo */
struct sx_period {
unsigned int period_ns;
uchar reg_value;
};
struct IN2000_hostdata {
struct Scsi_Host *next;
uchar chip; /* what kind of wd33c93 chip? */
uchar microcode; /* microcode rev if 'B' */
unsigned short io_base; /* IO port base */
unsigned int dip_switch; /* dip switch settings */
unsigned int hrev; /* hardware revision of card */
volatile uchar busy[8]; /* index = target, bit = lun */
volatile Scsi_Cmnd *input_Q; /* commands waiting to be started */
volatile Scsi_Cmnd *selecting; /* trying to select this command */
volatile Scsi_Cmnd *connected; /* currently connected command */
volatile Scsi_Cmnd *disconnected_Q;/* commands waiting for reconnect */
uchar state; /* what we are currently doing */
uchar fifo; /* what the FIFO is up to */
uchar level2; /* extent to which Level-2 commands are used */
uchar disconnect; /* disconnect/reselect policy */
unsigned int args; /* set from command-line argument */
uchar incoming_msg[8]; /* filled during message_in phase */
int incoming_ptr; /* mainly used with EXTENDED messages */
uchar outgoing_msg[8]; /* send this during next message_out */
int outgoing_len; /* length of outgoing message */
unsigned int default_sx_per; /* default transfer period for SCSI bus */
uchar sync_xfer[8]; /* sync_xfer reg settings per target */
uchar sync_stat[8]; /* status of sync negotiation per target */
uchar sync_off; /* bit mask: don't use sync with these targets */
#ifdef PROC_INTERFACE
uchar proc; /* bit mask: what's in proc output */
#ifdef PROC_STATISTICS
unsigned long cmd_cnt[8]; /* # of commands issued per target */
unsigned long int_cnt; /* # of interrupts serviced */
unsigned long disc_allowed_cnt[8]; /* # of disconnects allowed per target */
unsigned long disc_done_cnt[8]; /* # of disconnects done per target*/
#endif
#endif
};
/* defines for hostdata->chip */
#define C_WD33C93 0
#define C_WD33C93A 1
#define C_WD33C93B 2
#define C_UNKNOWN_CHIP 100
/* defines for hostdata->state */
#define S_UNCONNECTED 0
#define S_SELECTING 1
#define S_RUNNING_LEVEL2 2
#define S_CONNECTED 3
#define S_PRE_TMP_DISC 4
#define S_PRE_CMP_DISC 5
/* defines for hostdata->fifo */
#define FI_FIFO_UNUSED 0
#define FI_FIFO_READING 1
#define FI_FIFO_WRITING 2
/* defines for hostdata->level2 */
/* NOTE: only the first 3 are trustworthy at this point -
* having trouble when more than 1 device is reading/writing
* at the same time...
*/
#define L2_NONE 0 /* no combination commands - we get lots of ints */
#define L2_SELECT 1 /* start with SEL_ATN_XFER, but never resume it */
#define L2_BASIC 2 /* resume after STATUS ints & RDP messages */
#define L2_DATA 3 /* resume after DATA_IN/OUT ints */
#define L2_MOST 4 /* resume after anything except a RESELECT int */
#define L2_RESELECT 5 /* resume after everything, including RESELECT ints */
#define L2_ALL 6 /* always resume */
/* defines for hostdata->disconnect */
#define DIS_NEVER 0
#define DIS_ADAPTIVE 1
#define DIS_ALWAYS 2
/* defines for hostdata->args */
#define DB_TEST 1<<0
#define DB_FIFO 1<<1
#define DB_QUEUE_COMMAND 1<<2
#define DB_EXECUTE 1<<3
#define DB_INTR 1<<4
#define DB_TRANSFER 1<<5
#define DB_MASK 0x3f
#define A_NO_SCSI_RESET 1<<15
/* defines for hostdata->sync_xfer[] */
#define SS_UNSET 0
#define SS_FIRST 1
#define SS_WAITING 2
#define SS_SET 3
/* defines for hostdata->proc */
#define PR_VERSION 1<<0
#define PR_INFO 1<<1
#define PR_STATISTICS 1<<2
#define PR_CONNECTED 1<<3
#define PR_INPUTQ 1<<4
#define PR_DISCQ 1<<5
#define PR_TEST 1<<6
#define PR_STOP 1<<7
# include <linux/init.h>
# include <linux/spinlock.h>
# define in2000__INITFUNC(function) __initfunc(function)
# define in2000__INIT __init
# define in2000__INITDATA __initdata
# define CLISPIN_LOCK(host,flags) spin_lock_irqsave(host->host_lock, flags)
# define CLISPIN_UNLOCK(host,flags) spin_unlock_irqrestore(host->host_lock, \
flags)
static int in2000_detect(struct scsi_host_template *) in2000__INIT;
static int in2000_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
static int in2000_abort(Scsi_Cmnd *);
static void in2000_setup(char *, int *) in2000__INIT;
static int in2000_biosparam(struct scsi_device *, struct block_device *,
sector_t, int *);
static int in2000_bus_reset(Scsi_Cmnd *);
#define IN2000_CAN_Q 16
#define IN2000_SG SG_ALL
#define IN2000_CPL 2
#define IN2000_HOST_ID 7
#endif /* IN2000_H */