wd33c93.h
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- /*
- * wd33c93.h - Linux device driver definitions for the
- * Commodore Amiga A2091/590 SCSI controller card
- *
- * IMPORTANT: This file is for version 1.25 - 09/Jul/1997
- *
- * 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 WD33C93_H
- #define WD33C93_H
- #define PROC_INTERFACE /* add code for /proc/scsi/wd33c93/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 debugging bitmask */
- #ifdef DEBUGGING_ON
- #define DB(f,a) if (hostdata->args & (f)) a;
- #else
- #define DB(f,a)
- #endif
- #define uchar unsigned char
- /* 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
- /* ASR register */
- #define ASR_INT (0x80)
- #define ASR_LCI (0x40)
- #define ASR_BSY (0x20)
- #define ASR_CIP (0x10)
- #define ASR_PE (0x02)
- #define ASR_DBR (0x01)
- /* 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
- /* define these so we don't have to change a2091.c, etc. */
- #define WD33C93_FS_8_10 OWNID_FS_8
- #define WD33C93_FS_12_15 OWNID_FS_12
- #define WD33C93_FS_16_20 OWNID_FS_16
- /* 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 /* 20 = 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
- /* This is what the 3393 chip looks like to us */
- typedef struct {
- volatile unsigned char *SASR;
- volatile unsigned char *SCMD;
- } wd33c93_regs;
- typedef int (*dma_setup_t) (Scsi_Cmnd *SCpnt, int dir_in);
- typedef void (*dma_stop_t) (struct Scsi_Host *instance, Scsi_Cmnd *SCpnt,
- int status);
- #define ILLEGAL_STATUS_BYTE 0xff
- #define DEFAULT_SX_PER 376 /* (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 wd3393 fifo */
- struct sx_period {
- unsigned int period_ns;
- uchar reg_value;
- };
- /* FEF: defines for hostdata->dma_buffer_pool */
- #define BUF_CHIP_ALLOCED 0
- #define BUF_SCSI_ALLOCED 1
- struct WD33C93_hostdata {
- struct Scsi_Host *next;
- wd33c93_regs regs;
- uchar clock_freq;
- uchar chip; /* what kind of wd33c93? */
- uchar microcode; /* microcode rev */
- uchar dma_buffer_pool; /* FEF: buffer from chip_ram? */
- int dma_dir; /* data transfer dir. */
- dma_setup_t dma_setup;
- dma_stop_t dma_stop;
- unsigned int dma_xfer_mask;
- uchar *dma_bounce_buffer;
- unsigned int dma_bounce_len;
- 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 dma; /* current state of DMA (on/off) */
- 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 no_sync; /* bitmask: don't do sync on these targets */
- uchar no_dma; /* set this flag to disable DMA */
- #ifdef PROC_INTERFACE
- uchar proc; /* bitmask: 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 pio_cnt; /* # of pio data transfers */
- unsigned long dma_cnt; /* # of DMA data transfers */
- 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->dma */
- #define D_DMA_OFF 0
- #define D_DMA_RUNNING 1
- /* defines for hostdata->level2 */
- /* NOTE: only the first 3 are implemented so far */
- #define L2_NONE 1 /* no combination commands - we get lots of ints */
- #define L2_SELECT 2 /* start with SEL_ATN_XFER, but never resume it */
- #define L2_BASIC 3 /* resume after STATUS ints & RDP messages */
- #define L2_DATA 4 /* resume after DATA_IN/OUT ints */
- #define L2_MOST 5 /* resume after anything except a RESELECT int */
- #define L2_RESELECT 6 /* resume after everything, including RESELECT ints */
- #define L2_ALL 7 /* always resume */
- /* defines for hostdata->disconnect */
- #define DIS_NEVER 0
- #define DIS_ADAPTIVE 1
- #define DIS_ALWAYS 2
- /* defines for hostdata->args */
- #define DB_TEST1 1<<0
- #define DB_TEST2 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
- /* defines for hostdata->sync_stat[] */
- #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
- void wd33c93_init (struct Scsi_Host *instance, const wd33c93_regs regs,
- dma_setup_t setup, dma_stop_t stop, int clock_freq);
- int wd33c93_abort (Scsi_Cmnd *cmd);
- int wd33c93_queuecommand (Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *));
- void wd33c93_intr (struct Scsi_Host *instance);
- int wd33c93_proc_info(char *, char **, off_t, int, int, int);
- int wd33c93_reset (Scsi_Cmnd *, unsigned int);
- void wd33c93_release(void);
- #endif /* WD33C93_H */