2 * wd33c93.h - Linux device driver definitions for the
3 * Commodore Amiga A2091/590 SCSI controller card
5 * IMPORTANT: This file is for version 1.25 - 09/Jul/1997
7 * Copyright (c) 1996 John Shifflett, GeoLog Consulting
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
26 #define PROC_INTERFACE /* add code for /proc/scsi/wd33c93/xxx interface */
28 #define PROC_STATISTICS /* add code for keeping various real time stats */
31 #define SYNC_DEBUG /* extra info on sync negotiation printed */
32 #define DEBUGGING_ON /* enable command-line debugging bitmask */
33 #define DEBUG_DEFAULTS 0 /* default debugging bitmask */
37 #define DB(f,a) if (hostdata->args & (f)) a;
42 #define uchar unsigned char
45 /* wd register names */
46 #define WD_OWN_ID 0x00
47 #define WD_CONTROL 0x01
48 #define WD_TIMEOUT_PERIOD 0x02
58 #define WD_CDB_10 0x0c
59 #define WD_CDB_11 0x0d
60 #define WD_CDB_12 0x0e
61 #define WD_TARGET_LUN 0x0f
62 #define WD_COMMAND_PHASE 0x10
63 #define WD_SYNCHRONOUS_TRANSFER 0x11
64 #define WD_TRANSFER_COUNT_MSB 0x12
65 #define WD_TRANSFER_COUNT 0x13
66 #define WD_TRANSFER_COUNT_LSB 0x14
67 #define WD_DESTINATION_ID 0x15
68 #define WD_SOURCE_ID 0x16
69 #define WD_SCSI_STATUS 0x17
70 #define WD_COMMAND 0x18
72 #define WD_QUEUE_TAG 0x1a
73 #define WD_AUXILIARY_STATUS 0x1f
76 #define WD_CMD_RESET 0x00
77 #define WD_CMD_ABORT 0x01
78 #define WD_CMD_ASSERT_ATN 0x02
79 #define WD_CMD_NEGATE_ACK 0x03
80 #define WD_CMD_DISCONNECT 0x04
81 #define WD_CMD_RESELECT 0x05
82 #define WD_CMD_SEL_ATN 0x06
83 #define WD_CMD_SEL 0x07
84 #define WD_CMD_SEL_ATN_XFER 0x08
85 #define WD_CMD_SEL_XFER 0x09
86 #define WD_CMD_RESEL_RECEIVE 0x0a
87 #define WD_CMD_RESEL_SEND 0x0b
88 #define WD_CMD_WAIT_SEL_RECEIVE 0x0c
89 #define WD_CMD_TRANS_ADDR 0x18
90 #define WD_CMD_TRANS_INFO 0x20
91 #define WD_CMD_TRANSFER_PAD 0x21
92 #define WD_CMD_SBT_MODE 0x80
95 #define ASR_INT (0x80)
96 #define ASR_LCI (0x40)
97 #define ASR_BSY (0x20)
98 #define ASR_CIP (0x10)
100 #define ASR_DBR (0x01)
102 /* SCSI Bus Phases */
103 #define PHS_DATA_OUT 0x00
104 #define PHS_DATA_IN 0x01
105 #define PHS_COMMAND 0x02
106 #define PHS_STATUS 0x03
107 #define PHS_MESS_OUT 0x06
108 #define PHS_MESS_IN 0x07
110 /* Command Status Register definitions */
112 /* reset state interrupts */
113 #define CSR_RESET 0x00
114 #define CSR_RESET_AF 0x01
116 /* successful completion interrupts */
117 #define CSR_RESELECT 0x10
118 #define CSR_SELECT 0x11
119 #define CSR_SEL_XFER_DONE 0x16
120 #define CSR_XFER_DONE 0x18
122 /* paused or aborted interrupts */
123 #define CSR_MSGIN 0x20
125 #define CSR_SEL_ABORT 0x22
126 #define CSR_RESEL_ABORT 0x25
127 #define CSR_RESEL_ABORT_AM 0x27
128 #define CSR_ABORT 0x28
130 /* terminated interrupts */
131 #define CSR_INVALID 0x40
132 #define CSR_UNEXP_DISC 0x41
133 #define CSR_TIMEOUT 0x42
134 #define CSR_PARITY 0x43
135 #define CSR_PARITY_ATN 0x44
136 #define CSR_BAD_STATUS 0x45
137 #define CSR_UNEXP 0x48
139 /* service required interrupts */
140 #define CSR_RESEL 0x80
141 #define CSR_RESEL_AM 0x81
142 #define CSR_DISC 0x85
143 #define CSR_SRV_REQ 0x88
145 /* Own ID/CDB Size register */
146 #define OWNID_EAF 0x08
147 #define OWNID_EHP 0x10
148 #define OWNID_RAF 0x20
149 #define OWNID_FS_8 0x00
150 #define OWNID_FS_12 0x40
151 #define OWNID_FS_16 0x80
153 /* define these so we don't have to change a2091.c, etc. */
154 #define WD33C93_FS_8_10 OWNID_FS_8
155 #define WD33C93_FS_12_15 OWNID_FS_12
156 #define WD33C93_FS_16_20 OWNID_FS_16
158 /* Control register */
159 #define CTRL_HSP 0x01
161 #define CTRL_IDI 0x04
162 #define CTRL_EDI 0x08
163 #define CTRL_HHP 0x10
164 #define CTRL_POLLED 0x00
165 #define CTRL_BURST 0x20
166 #define CTRL_BUS 0x40
167 #define CTRL_DMA 0x80
169 /* Timeout Period register */
170 #define TIMEOUT_PERIOD_VALUE 20 /* 20 = 200 ms */
172 /* Synchronous Transfer Register */
175 /* Destination ID register */
176 #define DSTID_DPD 0x40
177 #define DATA_OUT_DIR 0
178 #define DATA_IN_DIR 1
179 #define DSTID_SCC 0x80
181 /* Source ID register */
182 #define SRCID_MASK 0x07
183 #define SRCID_SIV 0x08
184 #define SRCID_DSP 0x20
185 #define SRCID_ES 0x40
186 #define SRCID_ER 0x80
188 /* This is what the 3393 chip looks like to us */
190 #ifdef CONFIG_WD33C93_PIO
194 volatile unsigned char *SASR;
195 volatile unsigned char *SCMD;
200 typedef int (*dma_setup_t) (struct scsi_cmnd *SCpnt, int dir_in);
201 typedef void (*dma_stop_t) (struct Scsi_Host *instance,
202 struct scsi_cmnd *SCpnt, int status);
205 #define ILLEGAL_STATUS_BYTE 0xff
207 #define DEFAULT_SX_PER 376 /* (ns) fairly safe */
208 #define DEFAULT_SX_OFF 0 /* aka async */
210 #define OPTIMUM_SX_PER 252 /* (ns) best we can do (mult-of-4) */
211 #define OPTIMUM_SX_OFF 12 /* size of wd3393 fifo */
214 unsigned int period_ns;
218 /* FEF: defines for hostdata->dma_buffer_pool */
220 #define BUF_CHIP_ALLOCED 0
221 #define BUF_SCSI_ALLOCED 1
223 struct WD33C93_hostdata {
224 struct Scsi_Host *next;
228 uchar chip; /* what kind of wd33c93? */
229 uchar microcode; /* microcode rev */
230 uchar dma_buffer_pool; /* FEF: buffer from chip_ram? */
231 int dma_dir; /* data transfer dir. */
232 dma_setup_t dma_setup;
234 unsigned int dma_xfer_mask;
235 uchar *dma_bounce_buffer;
236 unsigned int dma_bounce_len;
237 volatile uchar busy[8]; /* index = target, bit = lun */
238 volatile struct scsi_cmnd *input_Q; /* commands waiting to be started */
239 volatile struct scsi_cmnd *selecting; /* trying to select this command */
240 volatile struct scsi_cmnd *connected; /* currently connected command */
241 volatile struct scsi_cmnd *disconnected_Q;/* commands waiting for reconnect */
242 uchar state; /* what we are currently doing */
243 uchar dma; /* current state of DMA (on/off) */
244 uchar level2; /* extent to which Level-2 commands are used */
245 uchar disconnect; /* disconnect/reselect policy */
246 unsigned int args; /* set from command-line argument */
247 uchar incoming_msg[8]; /* filled during message_in phase */
248 int incoming_ptr; /* mainly used with EXTENDED messages */
249 uchar outgoing_msg[8]; /* send this during next message_out */
250 int outgoing_len; /* length of outgoing message */
251 unsigned int default_sx_per; /* default transfer period for SCSI bus */
252 uchar sync_xfer[8]; /* sync_xfer reg settings per target */
253 uchar sync_stat[8]; /* status of sync negotiation per target */
254 uchar no_sync; /* bitmask: don't do sync on these targets */
255 uchar no_dma; /* set this flag to disable DMA */
256 #ifdef PROC_INTERFACE
257 uchar proc; /* bitmask: what's in proc output */
258 #ifdef PROC_STATISTICS
259 unsigned long cmd_cnt[8]; /* # of commands issued per target */
260 unsigned long int_cnt; /* # of interrupts serviced */
261 unsigned long pio_cnt; /* # of pio data transfers */
262 unsigned long dma_cnt; /* # of DMA data transfers */
263 unsigned long disc_allowed_cnt[8]; /* # of disconnects allowed per target */
264 unsigned long disc_done_cnt[8]; /* # of disconnects done per target*/
270 /* defines for hostdata->chip */
275 #define C_UNKNOWN_CHIP 100
277 /* defines for hostdata->state */
279 #define S_UNCONNECTED 0
280 #define S_SELECTING 1
281 #define S_RUNNING_LEVEL2 2
282 #define S_CONNECTED 3
283 #define S_PRE_TMP_DISC 4
284 #define S_PRE_CMP_DISC 5
286 /* defines for hostdata->dma */
289 #define D_DMA_RUNNING 1
291 /* defines for hostdata->level2 */
292 /* NOTE: only the first 3 are implemented so far */
294 #define L2_NONE 1 /* no combination commands - we get lots of ints */
295 #define L2_SELECT 2 /* start with SEL_ATN_XFER, but never resume it */
296 #define L2_BASIC 3 /* resume after STATUS ints & RDP messages */
297 #define L2_DATA 4 /* resume after DATA_IN/OUT ints */
298 #define L2_MOST 5 /* resume after anything except a RESELECT int */
299 #define L2_RESELECT 6 /* resume after everything, including RESELECT ints */
300 #define L2_ALL 7 /* always resume */
302 /* defines for hostdata->disconnect */
305 #define DIS_ADAPTIVE 1
308 /* defines for hostdata->args */
310 #define DB_TEST1 1<<0
311 #define DB_TEST2 1<<1
312 #define DB_QUEUE_COMMAND 1<<2
313 #define DB_EXECUTE 1<<3
315 #define DB_TRANSFER 1<<5
318 /* defines for hostdata->sync_stat[] */
325 /* defines for hostdata->proc */
327 #define PR_VERSION 1<<0
329 #define PR_STATISTICS 1<<2
330 #define PR_CONNECTED 1<<3
331 #define PR_INPUTQ 1<<4
332 #define PR_DISCQ 1<<5
337 void wd33c93_init (struct Scsi_Host *instance, const wd33c93_regs regs,
338 dma_setup_t setup, dma_stop_t stop, int clock_freq);
339 int wd33c93_abort (struct scsi_cmnd *cmd);
340 int wd33c93_queuecommand (struct scsi_cmnd *cmd,
341 void (*done)(struct scsi_cmnd *));
342 void wd33c93_intr (struct Scsi_Host *instance);
343 int wd33c93_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
344 int wd33c93_host_reset (struct scsi_cmnd *);
345 void wd33c93_release(void);
347 #endif /* WD33C93_H */