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Diffstat (limited to 'drivers/scsi/wd33c93.h')
-rw-r--r--drivers/scsi/wd33c93.h348
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diff --git a/drivers/scsi/wd33c93.h b/drivers/scsi/wd33c93.h
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+++ b/drivers/scsi/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
+
+#include <linux/config.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 {
+#ifdef CONFIG_WD33C93_PIO
+ unsigned int SASR;
+ unsigned int SCMD;
+#else
+ volatile unsigned char *SASR;
+ volatile unsigned char *SCMD;
+#endif
+} wd33c93_regs;
+
+
+typedef int (*dma_setup_t) (struct scsi_cmnd *SCpnt, int dir_in);
+typedef void (*dma_stop_t) (struct Scsi_Host *instance,
+ struct 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;
+ spinlock_t lock;
+ 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 struct scsi_cmnd *input_Q; /* commands waiting to be started */
+ volatile struct scsi_cmnd *selecting; /* trying to select this command */
+ volatile struct scsi_cmnd *connected; /* currently connected command */
+ volatile struct 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 (struct scsi_cmnd *cmd);
+int wd33c93_queuecommand (struct scsi_cmnd *cmd,
+ void (*done)(struct scsi_cmnd *));
+void wd33c93_intr (struct Scsi_Host *instance);
+int wd33c93_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
+int wd33c93_host_reset (struct scsi_cmnd *);
+void wd33c93_release(void);
+
+#endif /* WD33C93_H */