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1.1 root 1: /*
2: * in2000.h - Linux device driver definitions for the
3: * Always IN2000 ISA SCSI card.
4: *
5: * IMPORTANT: This file is for version 1.33 - 26/Aug/1998
6: *
7: * Copyright (c) 1996 John Shifflett, GeoLog Consulting
8: * [email protected]
9: * [email protected]
10: *
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)
14: * any later version.
15: *
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.
20: *
21: */
22:
23: #ifndef IN2000_H
24: #define IN2000_H
25:
26: #include <asm/io.h>
27:
28: #define PROC_INTERFACE /* add code for /proc/scsi/in2000/xxx interface */
29: #ifdef PROC_INTERFACE
30: #define PROC_STATISTICS /* add code for keeping various real time stats */
31: #endif
32:
33: #define SYNC_DEBUG /* extra info on sync negotiation printed */
34: #define DEBUGGING_ON /* enable command-line debugging bitmask */
35: #define DEBUG_DEFAULTS 0 /* default bitmask - change from command-line */
36:
37: #define FAST_READ_IO /* No problems with these on my machine */
38: #define FAST_WRITE_IO
39:
40: #ifdef DEBUGGING_ON
41: #define DB(f,a) if (hostdata->args & (f)) a;
42: #define CHECK_NULL(p,s) /* if (!(p)) {printk("\n"); while (1) printk("NP:%s\r",(s));} */
43: #else
44: #define DB(f,a)
45: #define CHECK_NULL(p,s)
46: #endif
47:
48: #define uchar unsigned char
49:
50: #define read1_io(a) (inb(hostdata->io_base+(a)))
51: #define read2_io(a) (inw(hostdata->io_base+(a)))
52: #define write1_io(b,a) (outb((b),hostdata->io_base+(a)))
53: #define write2_io(w,a) (outw((w),hostdata->io_base+(a)))
54:
55: /* These inline assembly defines are derived from a patch
56: * sent to me by Bill Earnest. He's done a lot of very
57: * valuable thinking, testing, and coding during his effort
58: * to squeeze more speed out of this driver. I really think
59: * that we are doing IO at close to the maximum now with
60: * the fifo. (And yes, insw uses 'edi' while outsw uses
61: * 'esi'. Thanks Bill!)
62: */
63:
64: #define FAST_READ2_IO() \
1.1.1.2 ! root 65: ({ \
! 66: int __dummy_1,__dummy_2; \
1.1 root 67: __asm__ __volatile__ ("\n \
68: cld \n \
69: orl %%ecx, %%ecx \n \
70: jz 1f \n \
71: rep \n \
1.1.1.2 ! root 72: insw (%%dx),%%es:(%%edi) \n \
1.1 root 73: 1: " \
1.1.1.2 ! root 74: : "=D" (sp) ,"=c" (__dummy_1) ,"=d" (__dummy_2) /* output */ \
! 75: : "2" (f), "0" (sp), "1" (i) /* input */ \
! 76: ); /* trashed */ \
! 77: })
1.1 root 78:
79: #define FAST_WRITE2_IO() \
1.1.1.2 ! root 80: ({ \
! 81: int __dummy_1,__dummy_2; \
1.1 root 82: __asm__ __volatile__ ("\n \
83: cld \n \
84: orl %%ecx, %%ecx \n \
85: jz 1f \n \
86: rep \n \
1.1.1.2 ! root 87: outsw %%ds:(%%esi),(%%dx) \n \
1.1 root 88: 1: " \
1.1.1.2 ! root 89: : "=S" (sp) ,"=c" (__dummy_1) ,"=d" (__dummy_2)/* output */ \
! 90: : "2" (f), "0" (sp), "1" (i) /* input */ \
! 91: ); /* trashed */ \
! 92: })
1.1 root 93:
94: /* IN2000 io_port offsets */
95: #define IO_WD_ASR 0x00 /* R - 3393 auxstat reg */
96: #define ASR_INT 0x80
97: #define ASR_LCI 0x40
98: #define ASR_BSY 0x20
99: #define ASR_CIP 0x10
100: #define ASR_PE 0x02
101: #define ASR_DBR 0x01
102: #define IO_WD_ADDR 0x00 /* W - 3393 address reg */
103: #define IO_WD_DATA 0x01 /* R/W - rest of 3393 regs */
104: #define IO_FIFO 0x02 /* R/W - in2000 dual-port fifo (16 bits) */
105: #define IN2000_FIFO_SIZE 2048 /* fifo capacity in bytes */
106: #define IO_CARD_RESET 0x03 /* W - in2000 start master reset */
107: #define IO_FIFO_COUNT 0x04 /* R - in2000 fifo counter */
108: #define IO_FIFO_WRITE 0x05 /* W - clear fifo counter, start write */
109: #define IO_FIFO_READ 0x07 /* W - start fifo read */
110: #define IO_LED_OFF 0x08 /* W - turn off in2000 activity LED */
111: #define IO_SWITCHES 0x08 /* R - read in2000 dip switch */
112: #define SW_ADDR0 0x01 /* bit 0 = bit 0 of index to io addr */
113: #define SW_ADDR1 0x02 /* bit 1 = bit 1 of index io addr */
114: #define SW_DISINT 0x04 /* bit 2 true if ints disabled */
115: #define SW_INT0 0x08 /* bit 3 = bit 0 of index to interrupt */
116: #define SW_INT1 0x10 /* bit 4 = bit 1 of index to interrupt */
117: #define SW_INT_SHIFT 3 /* shift right this amount to right justify int bits */
118: #define SW_SYNC_DOS5 0x20 /* bit 5 used by Always BIOS */
119: #define SW_FLOPPY 0x40 /* bit 6 true if floppy enabled */
120: #define SW_BIT7 0x80 /* bit 7 hardwired true (ground) */
121: #define IO_LED_ON 0x09 /* W - turn on in2000 activity LED */
122: #define IO_HARDWARE 0x0a /* R - read in2000 hardware rev, stop reset */
123: #define IO_INTR_MASK 0x0c /* W - in2000 interrupt mask reg */
124: #define IMASK_WD 0x01 /* WD33c93 interrupt mask */
125: #define IMASK_FIFO 0x02 /* FIFO interrupt mask */
126:
127: /* wd register names */
128: #define WD_OWN_ID 0x00
129: #define WD_CONTROL 0x01
130: #define WD_TIMEOUT_PERIOD 0x02
131: #define WD_CDB_1 0x03
132: #define WD_CDB_2 0x04
133: #define WD_CDB_3 0x05
134: #define WD_CDB_4 0x06
135: #define WD_CDB_5 0x07
136: #define WD_CDB_6 0x08
137: #define WD_CDB_7 0x09
138: #define WD_CDB_8 0x0a
139: #define WD_CDB_9 0x0b
140: #define WD_CDB_10 0x0c
141: #define WD_CDB_11 0x0d
142: #define WD_CDB_12 0x0e
143: #define WD_TARGET_LUN 0x0f
144: #define WD_COMMAND_PHASE 0x10
145: #define WD_SYNCHRONOUS_TRANSFER 0x11
146: #define WD_TRANSFER_COUNT_MSB 0x12
147: #define WD_TRANSFER_COUNT 0x13
148: #define WD_TRANSFER_COUNT_LSB 0x14
149: #define WD_DESTINATION_ID 0x15
150: #define WD_SOURCE_ID 0x16
151: #define WD_SCSI_STATUS 0x17
152: #define WD_COMMAND 0x18
153: #define WD_DATA 0x19
154: #define WD_QUEUE_TAG 0x1a
155: #define WD_AUXILIARY_STATUS 0x1f
156:
157: /* WD commands */
158: #define WD_CMD_RESET 0x00
159: #define WD_CMD_ABORT 0x01
160: #define WD_CMD_ASSERT_ATN 0x02
161: #define WD_CMD_NEGATE_ACK 0x03
162: #define WD_CMD_DISCONNECT 0x04
163: #define WD_CMD_RESELECT 0x05
164: #define WD_CMD_SEL_ATN 0x06
165: #define WD_CMD_SEL 0x07
166: #define WD_CMD_SEL_ATN_XFER 0x08
167: #define WD_CMD_SEL_XFER 0x09
168: #define WD_CMD_RESEL_RECEIVE 0x0a
169: #define WD_CMD_RESEL_SEND 0x0b
170: #define WD_CMD_WAIT_SEL_RECEIVE 0x0c
171: #define WD_CMD_TRANS_ADDR 0x18
172: #define WD_CMD_TRANS_INFO 0x20
173: #define WD_CMD_TRANSFER_PAD 0x21
174: #define WD_CMD_SBT_MODE 0x80
175:
176: /* SCSI Bus Phases */
177: #define PHS_DATA_OUT 0x00
178: #define PHS_DATA_IN 0x01
179: #define PHS_COMMAND 0x02
180: #define PHS_STATUS 0x03
181: #define PHS_MESS_OUT 0x06
182: #define PHS_MESS_IN 0x07
183:
184: /* Command Status Register definitions */
185:
186: /* reset state interrupts */
187: #define CSR_RESET 0x00
188: #define CSR_RESET_AF 0x01
189:
190: /* successful completion interrupts */
191: #define CSR_RESELECT 0x10
192: #define CSR_SELECT 0x11
193: #define CSR_SEL_XFER_DONE 0x16
194: #define CSR_XFER_DONE 0x18
195:
196: /* paused or aborted interrupts */
197: #define CSR_MSGIN 0x20
198: #define CSR_SDP 0x21
199: #define CSR_SEL_ABORT 0x22
200: #define CSR_RESEL_ABORT 0x25
201: #define CSR_RESEL_ABORT_AM 0x27
202: #define CSR_ABORT 0x28
203:
204: /* terminated interrupts */
205: #define CSR_INVALID 0x40
206: #define CSR_UNEXP_DISC 0x41
207: #define CSR_TIMEOUT 0x42
208: #define CSR_PARITY 0x43
209: #define CSR_PARITY_ATN 0x44
210: #define CSR_BAD_STATUS 0x45
211: #define CSR_UNEXP 0x48
212:
213: /* service required interrupts */
214: #define CSR_RESEL 0x80
215: #define CSR_RESEL_AM 0x81
216: #define CSR_DISC 0x85
217: #define CSR_SRV_REQ 0x88
218:
219: /* Own ID/CDB Size register */
220: #define OWNID_EAF 0x08
221: #define OWNID_EHP 0x10
222: #define OWNID_RAF 0x20
223: #define OWNID_FS_8 0x00
224: #define OWNID_FS_12 0x40
225: #define OWNID_FS_16 0x80
226:
227: /* Control register */
228: #define CTRL_HSP 0x01
229: #define CTRL_HA 0x02
230: #define CTRL_IDI 0x04
231: #define CTRL_EDI 0x08
232: #define CTRL_HHP 0x10
233: #define CTRL_POLLED 0x00
234: #define CTRL_BURST 0x20
235: #define CTRL_BUS 0x40
236: #define CTRL_DMA 0x80
237:
238: /* Timeout Period register */
239: #define TIMEOUT_PERIOD_VALUE 20 /* results in 200 ms. */
240:
241: /* Synchronous Transfer Register */
242: #define STR_FSS 0x80
243:
244: /* Destination ID register */
245: #define DSTID_DPD 0x40
246: #define DATA_OUT_DIR 0
247: #define DATA_IN_DIR 1
248: #define DSTID_SCC 0x80
249:
250: /* Source ID register */
251: #define SRCID_MASK 0x07
252: #define SRCID_SIV 0x08
253: #define SRCID_DSP 0x20
254: #define SRCID_ES 0x40
255: #define SRCID_ER 0x80
256:
257:
258:
259: #define ILLEGAL_STATUS_BYTE 0xff
260:
261:
262: #define DEFAULT_SX_PER 500 /* (ns) fairly safe */
263: #define DEFAULT_SX_OFF 0 /* aka async */
264:
265: #define OPTIMUM_SX_PER 252 /* (ns) best we can do (mult-of-4) */
266: #define OPTIMUM_SX_OFF 12 /* size of in2000 fifo */
267:
268: struct sx_period {
269: unsigned int period_ns;
270: uchar reg_value;
271: };
272:
273:
274: struct IN2000_hostdata {
275: struct Scsi_Host *next;
276: uchar chip; /* what kind of wd33c93 chip? */
277: uchar microcode; /* microcode rev if 'B' */
278: unsigned short io_base; /* IO port base */
279: unsigned int dip_switch; /* dip switch settings */
280: unsigned int hrev; /* hardware revision of card */
281: volatile uchar busy[8]; /* index = target, bit = lun */
282: volatile Scsi_Cmnd *input_Q; /* commands waiting to be started */
283: volatile Scsi_Cmnd *selecting; /* trying to select this command */
284: volatile Scsi_Cmnd *connected; /* currently connected command */
285: volatile Scsi_Cmnd *disconnected_Q;/* commands waiting for reconnect */
286: uchar state; /* what we are currently doing */
287: uchar fifo; /* what the FIFO is up to */
288: uchar level2; /* extent to which Level-2 commands are used */
289: uchar disconnect; /* disconnect/reselect policy */
290: unsigned int args; /* set from command-line argument */
291: uchar incoming_msg[8]; /* filled during message_in phase */
292: int incoming_ptr; /* mainly used with EXTENDED messages */
293: uchar outgoing_msg[8]; /* send this during next message_out */
294: int outgoing_len; /* length of outgoing message */
295: unsigned int default_sx_per; /* default transfer period for SCSI bus */
296: uchar sync_xfer[8]; /* sync_xfer reg settings per target */
297: uchar sync_stat[8]; /* status of sync negotiation per target */
298: uchar sync_off; /* bit mask: don't use sync with these targets */
299: #ifdef PROC_INTERFACE
300: uchar proc; /* bit mask: what's in proc output */
301: #ifdef PROC_STATISTICS
302: unsigned long cmd_cnt[8]; /* # of commands issued per target */
303: unsigned long int_cnt; /* # of interrupts serviced */
304: unsigned long disc_allowed_cnt[8]; /* # of disconnects allowed per target */
305: unsigned long disc_done_cnt[8]; /* # of disconnects done per target*/
306: #endif
307: #endif
308: };
309:
310:
311: /* defines for hostdata->chip */
312:
313: #define C_WD33C93 0
314: #define C_WD33C93A 1
315: #define C_WD33C93B 2
316: #define C_UNKNOWN_CHIP 100
317:
318: /* defines for hostdata->state */
319:
320: #define S_UNCONNECTED 0
321: #define S_SELECTING 1
322: #define S_RUNNING_LEVEL2 2
323: #define S_CONNECTED 3
324: #define S_PRE_TMP_DISC 4
325: #define S_PRE_CMP_DISC 5
326:
327: /* defines for hostdata->fifo */
328:
329: #define FI_FIFO_UNUSED 0
330: #define FI_FIFO_READING 1
331: #define FI_FIFO_WRITING 2
332:
333: /* defines for hostdata->level2 */
334: /* NOTE: only the first 3 are trustworthy at this point -
335: * having trouble when more than 1 device is reading/writing
336: * at the same time...
337: */
338:
339: #define L2_NONE 0 /* no combination commands - we get lots of ints */
340: #define L2_SELECT 1 /* start with SEL_ATN_XFER, but never resume it */
341: #define L2_BASIC 2 /* resume after STATUS ints & RDP messages */
342: #define L2_DATA 3 /* resume after DATA_IN/OUT ints */
343: #define L2_MOST 4 /* resume after anything except a RESELECT int */
344: #define L2_RESELECT 5 /* resume after everything, including RESELECT ints */
345: #define L2_ALL 6 /* always resume */
346:
347: /* defines for hostdata->disconnect */
348:
349: #define DIS_NEVER 0
350: #define DIS_ADAPTIVE 1
351: #define DIS_ALWAYS 2
352:
353: /* defines for hostdata->args */
354:
355: #define DB_TEST 1<<0
356: #define DB_FIFO 1<<1
357: #define DB_QUEUE_COMMAND 1<<2
358: #define DB_EXECUTE 1<<3
359: #define DB_INTR 1<<4
360: #define DB_TRANSFER 1<<5
361: #define DB_MASK 0x3f
362:
363: #define A_NO_SCSI_RESET 1<<15
364:
365:
366: /* defines for hostdata->sync_xfer[] */
367:
368: #define SS_UNSET 0
369: #define SS_FIRST 1
370: #define SS_WAITING 2
371: #define SS_SET 3
372:
373: /* defines for hostdata->proc */
374:
375: #define PR_VERSION 1<<0
376: #define PR_INFO 1<<1
377: #define PR_STATISTICS 1<<2
378: #define PR_CONNECTED 1<<3
379: #define PR_INPUTQ 1<<4
380: #define PR_DISCQ 1<<5
381: #define PR_TEST 1<<6
382: #define PR_STOP 1<<7
383:
384:
385: #include <linux/version.h>
386:
387: #if LINUX_VERSION_CODE < 0x020100 /* 2.0.xx */
388: # define in2000__INITFUNC(function) function
389: # define in2000__INIT
390: # define in2000__INITDATA
391: # define CLISPIN_LOCK(flags) do { save_flags(flags); cli(); } while(0)
392: # define CLISPIN_UNLOCK(flags) restore_flags(flags)
393: #else /* 2.1.xxx */
394: # include <linux/init.h>
395: # include <asm/spinlock.h>
396: # define in2000__INITFUNC(function) __initfunc(function)
397: # define in2000__INIT __init
398: # define in2000__INITDATA __initdata
399: # define CLISPIN_LOCK(flags) spin_lock_irqsave(&io_request_lock, flags)
400: # define CLISPIN_UNLOCK(flags) spin_unlock_irqrestore(&io_request_lock, flags)
401: #endif
402:
403:
404: int in2000_detect(Scsi_Host_Template *) in2000__INIT;
405: int in2000_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
406: int in2000_abort(Scsi_Cmnd *);
407: void in2000_setup(char *, int *) in2000__INIT;
408: int in2000_proc_info(char *, char **, off_t, int, int, int);
409: struct proc_dir_entry proc_scsi_in2000;
410: int in2000_biosparam(struct scsi_disk *, kdev_t, int *);
411: int in2000_reset(Scsi_Cmnd *, unsigned int);
412:
413:
414: #define IN2000_CAN_Q 16
415: #define IN2000_SG SG_ALL
416: #define IN2000_CPL 2
417: #define IN2000_HOST_ID 7
418:
419: #if LINUX_VERSION_CODE < 0x020100 /* 2.0.xx */
420:
421: #define IN2000 { NULL, /* link pointer for modules */ \
422: NULL, /* usage_count for modules */ \
423: &proc_scsi_in2000, /* pointer to /proc/scsi directory entry */ \
424: in2000_proc_info, /* pointer to proc info function */ \
425: "Always IN2000", /* device name */ \
426: in2000_detect, /* returns number of in2000's found */ \
427: NULL, /* optional unload function for modules */ \
428: NULL, /* optional misc info function */ \
429: NULL, /* send scsi command, wait for completion */ \
430: in2000_queuecommand, /* queue scsi command, don't wait */ \
431: in2000_abort, /* abort current command */ \
432: in2000_reset, /* reset scsi bus */ \
433: NULL, /* slave_attach - unused */ \
434: in2000_biosparam, /* figures out BIOS parameters for lilo, etc */ \
435: IN2000_CAN_Q, /* max commands we can queue up */ \
436: IN2000_HOST_ID, /* host-adapter scsi id */ \
437: IN2000_SG, /* scatter-gather table size */ \
438: IN2000_CPL, /* commands per lun */ \
439: 0, /* board counter */ \
440: 0, /* unchecked dma */ \
441: DISABLE_CLUSTERING \
442: }
443:
444: #else /* 2.1.xxx */
445:
446: #define IN2000 { proc_dir: &proc_scsi_in2000, /* pointer to /proc/scsi directory entry */ \
447: proc_info: in2000_proc_info, /* pointer to proc info function */ \
448: name: "Always IN2000", /* device name */ \
449: detect: in2000_detect, /* returns number of in2000's found */ \
450: queuecommand: in2000_queuecommand, /* queue scsi command, don't wait */ \
451: abort: in2000_abort, /* abort current command */ \
452: reset: in2000_reset, /* reset scsi bus */ \
453: bios_param: in2000_biosparam, /* figures out BIOS parameters for lilo, etc */ \
454: can_queue: IN2000_CAN_Q, /* max commands we can queue up */ \
455: this_id: IN2000_HOST_ID, /* host-adapter scsi id */ \
456: sg_tablesize: IN2000_SG, /* scatter-gather table size */ \
457: cmd_per_lun: IN2000_CPL, /* commands per lun */ \
458: use_clustering: DISABLE_CLUSTERING, /* ENABLE_CLUSTERING may speed things up */ \
459: use_new_eh_code: 0 /* new error code - not using it yet */ \
460: }
461:
462: #endif
463:
464:
465: #endif /* IN2000_H */
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