5113f6f70
 김현기
kernel add
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
|
/*
* linux/drivers/acorn/scsi/acornscsi.h
*
* Copyright (C) 1997 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Acorn SCSI driver
*/
#ifndef ACORNSCSI_H
#define ACORNSCSI_H
/* SBIC registers */
#define SBIC_OWNID 0
#define OWNID_FS1 (1<<7)
#define OWNID_FS2 (1<<6)
#define OWNID_EHP (1<<4)
#define OWNID_EAF (1<<3)
#define SBIC_CTRL 1
#define CTRL_DMAMODE (1<<7)
#define CTRL_DMADBAMODE (1<<6)
#define CTRL_DMABURST (1<<5)
#define CTRL_DMAPOLLED 0
#define CTRL_HHP (1<<4)
#define CTRL_EDI (1<<3)
#define CTRL_IDI (1<<2)
#define CTRL_HA (1<<1)
#define CTRL_HSP (1<<0)
#define SBIC_TIMEOUT 2
#define SBIC_TOTSECTS 3
#define SBIC_TOTHEADS 4
#define SBIC_TOTCYLH 5
#define SBIC_TOTCYLL 6
#define SBIC_LOGADDRH 7
#define SBIC_LOGADDRM2 8
#define SBIC_LOGADDRM1 9
#define SBIC_LOGADDRL 10
#define SBIC_SECTORNUM 11
#define SBIC_HEADNUM 12
#define SBIC_CYLH 13
#define SBIC_CYLL 14
#define SBIC_TARGETLUN 15
#define TARGETLUN_TLV (1<<7)
#define TARGETLUN_DOK (1<<6)
#define SBIC_CMNDPHASE 16
#define SBIC_SYNCHTRANSFER 17
#define SYNCHTRANSFER_OF0 0x00
#define SYNCHTRANSFER_OF1 0x01
#define SYNCHTRANSFER_OF2 0x02
#define SYNCHTRANSFER_OF3 0x03
#define SYNCHTRANSFER_OF4 0x04
#define SYNCHTRANSFER_OF5 0x05
#define SYNCHTRANSFER_OF6 0x06
#define SYNCHTRANSFER_OF7 0x07
#define SYNCHTRANSFER_OF8 0x08
#define SYNCHTRANSFER_OF9 0x09
#define SYNCHTRANSFER_OF10 0x0A
#define SYNCHTRANSFER_OF11 0x0B
#define SYNCHTRANSFER_OF12 0x0C
#define SYNCHTRANSFER_8DBA 0x00
#define SYNCHTRANSFER_2DBA 0x20
#define SYNCHTRANSFER_3DBA 0x30
#define SYNCHTRANSFER_4DBA 0x40
#define SYNCHTRANSFER_5DBA 0x50
#define SYNCHTRANSFER_6DBA 0x60
#define SYNCHTRANSFER_7DBA 0x70
#define SBIC_TRANSCNTH 18
#define SBIC_TRANSCNTM 19
#define SBIC_TRANSCNTL 20
#define SBIC_DESTID 21
#define DESTID_SCC (1<<7)
#define DESTID_DPD (1<<6)
#define SBIC_SOURCEID 22
#define SOURCEID_ER (1<<7)
#define SOURCEID_ES (1<<6)
#define SOURCEID_DSP (1<<5)
#define SOURCEID_SIV (1<<4)
#define SBIC_SSR 23
#define SBIC_CMND 24
#define CMND_RESET 0x00
#define CMND_ABORT 0x01
#define CMND_ASSERTATN 0x02
#define CMND_NEGATEACK 0x03
#define CMND_DISCONNECT 0x04
#define CMND_RESELECT 0x05
#define CMND_SELWITHATN 0x06
#define CMND_SELECT 0x07
#define CMND_SELECTATNTRANSFER 0x08
#define CMND_SELECTTRANSFER 0x09
#define CMND_RESELECTRXDATA 0x0A
#define CMND_RESELECTTXDATA 0x0B
#define CMND_WAITFORSELRECV 0x0C
#define CMND_SENDSTATCMD 0x0D
#define CMND_SENDDISCONNECT 0x0E
#define CMND_SETIDI 0x0F
#define CMND_RECEIVECMD 0x10
#define CMND_RECEIVEDTA 0x11
#define CMND_RECEIVEMSG 0x12
#define CMND_RECEIVEUSP 0x13
#define CMND_SENDCMD 0x14
#define CMND_SENDDATA 0x15
#define CMND_SENDMSG 0x16
#define CMND_SENDUSP 0x17
#define CMND_TRANSLATEADDR 0x18
#define CMND_XFERINFO 0x20
#define CMND_SBT (1<<7)
#define SBIC_DATA 25
#define SBIC_ASR 26
#define ASR_INT (1<<7)
#define ASR_LCI (1<<6)
#define ASR_BSY (1<<5)
#define ASR_CIP (1<<4)
#define ASR_PE (1<<1)
#define ASR_DBR (1<<0)
/* DMAC registers */
#define DMAC_INIT 0x00
#define INIT_8BIT (1)
#define DMAC_CHANNEL 0x80
#define CHANNEL_0 0x00
#define CHANNEL_1 0x01
#define CHANNEL_2 0x02
#define CHANNEL_3 0x03
#define DMAC_TXCNTLO 0x01
#define DMAC_TXCNTHI 0x81
#define DMAC_TXADRLO 0x02
#define DMAC_TXADRMD 0x82
#define DMAC_TXADRHI 0x03
#define DMAC_DEVCON0 0x04
#define DEVCON0_AKL (1<<7)
#define DEVCON0_RQL (1<<6)
#define DEVCON0_EXW (1<<5)
#define DEVCON0_ROT (1<<4)
#define DEVCON0_CMP (1<<3)
#define DEVCON0_DDMA (1<<2)
#define DEVCON0_AHLD (1<<1)
#define DEVCON0_MTM (1<<0)
#define DMAC_DEVCON1 0x84
#define DEVCON1_WEV (1<<1)
#define DEVCON1_BHLD (1<<0)
#define DMAC_MODECON 0x05
#define MODECON_WOED 0x01
#define MODECON_VERIFY 0x00
#define MODECON_READ 0x04
#define MODECON_WRITE 0x08
#define MODECON_AUTOINIT 0x10
#define MODECON_ADDRDIR 0x20
#define MODECON_DEMAND 0x00
#define MODECON_SINGLE 0x40
#define MODECON_BLOCK 0x80
#define MODECON_CASCADE 0xC0
#define DMAC_STATUS 0x85
#define STATUS_TC0 (1<<0)
#define STATUS_RQ0 (1<<4)
#define DMAC_TEMPLO 0x06
#define DMAC_TEMPHI 0x86
#define DMAC_REQREG 0x07
#define DMAC_MASKREG 0x87
#define MASKREG_M0 0x01
#define MASKREG_M1 0x02
#define MASKREG_M2 0x04
#define MASKREG_M3 0x08
/* miscellaneous internal variables */
#define MASK_ON (MASKREG_M3|MASKREG_M2|MASKREG_M1|MASKREG_M0)
#define MASK_OFF (MASKREG_M3|MASKREG_M2|MASKREG_M1)
/*
* SCSI driver phases
*/
typedef enum {
PHASE_IDLE, /* we're not planning on doing anything */
PHASE_CONNECTING, /* connecting to a target */
PHASE_CONNECTED, /* connected to a target */
PHASE_MSGOUT, /* message out to device */
PHASE_RECONNECTED, /* reconnected */
PHASE_COMMANDPAUSED, /* command partly sent */
PHASE_COMMAND, /* command all sent */
PHASE_DATAOUT, /* data out to device */
PHASE_DATAIN, /* data in from device */
PHASE_STATUSIN, /* status in from device */
PHASE_MSGIN, /* message in from device */
PHASE_DONE, /* finished */
PHASE_ABORTED, /* aborted */
PHASE_DISCONNECT, /* disconnecting */
} phase_t;
/*
* After interrupt, what to do now
*/
typedef enum {
INTR_IDLE, /* not expecting another IRQ */
INTR_NEXT_COMMAND, /* start next command */
INTR_PROCESSING, /* interrupt routine still processing */
} intr_ret_t;
/*
* DMA direction
*/
typedef enum {
DMA_OUT, /* DMA from memory to chip */
DMA_IN /* DMA from chip to memory */
} dmadir_t;
/*
* Synchronous transfer state
*/
typedef enum { /* Synchronous transfer state */
SYNC_ASYNCHRONOUS, /* don't negotiate synchronous transfers*/
SYNC_NEGOCIATE, /* start negotiation */
SYNC_SENT_REQUEST, /* sent SDTR message */
SYNC_COMPLETED, /* received SDTR reply */
} syncxfer_t;
/*
* Command type
*/
typedef enum { /* command type */
CMD_READ, /* READ_6, READ_10, READ_12 */
CMD_WRITE, /* WRITE_6, WRITE_10, WRITE_12 */
CMD_MISC, /* Others */
} cmdtype_t;
/*
* Data phase direction
*/
typedef enum { /* Data direction */
DATADIR_IN, /* Data in phase expected */
DATADIR_OUT /* Data out phase expected */
} datadir_t;
#include "queue.h"
#include "msgqueue.h"
#define STATUS_BUFFER_SIZE 32
/*
* This is used to dump the previous states of the SBIC
*/
struct status_entry {
unsigned long when;
unsigned char ssr;
unsigned char ph;
unsigned char irq;
unsigned char unused;
};
#define ADD_STATUS(_q,_ssr,_ph,_irq) \
({ \
host->status[(_q)][host->status_ptr[(_q)]].when = jiffies; \
host->status[(_q)][host->status_ptr[(_q)]].ssr = (_ssr); \
host->status[(_q)][host->status_ptr[(_q)]].ph = (_ph); \
host->status[(_q)][host->status_ptr[(_q)]].irq = (_irq); \
host->status_ptr[(_q)] = (host->status_ptr[(_q)] + 1) & (STATUS_BUFFER_SIZE - 1); \
})
/*
* AcornSCSI host specific data
*/
typedef struct acornscsi_hostdata {
/* miscellaneous */
struct Scsi_Host *host; /* host */
struct scsi_cmnd *SCpnt; /* currently processing command */
struct scsi_cmnd *origSCpnt; /* original connecting command */
void __iomem *base; /* memc base address */
void __iomem *fast; /* fast ioc base address */
/* driver information */
struct {
unsigned int irq; /* interrupt */
phase_t phase; /* current phase */
struct {
unsigned char target; /* reconnected target */
unsigned char lun; /* reconnected lun */
unsigned char tag; /* reconnected tag */
} reconnected;
struct scsi_pointer SCp; /* current commands data pointer */
MsgQueue_t msgs;
unsigned short last_message; /* last message to be sent */
unsigned char disconnectable:1; /* this command can be disconnected */
} scsi;
/* statistics information */
struct {
unsigned int queues;
unsigned int removes;
unsigned int fins;
unsigned int reads;
unsigned int writes;
unsigned int miscs;
unsigned int disconnects;
unsigned int aborts;
unsigned int resets;
} stats;
/* queue handling */
struct {
Queue_t issue; /* issue queue */
Queue_t disconnected; /* disconnected command queue */
} queues;
/* per-device info */
struct {
unsigned char sync_xfer; /* synchronous transfer (SBIC value) */
syncxfer_t sync_state; /* sync xfer negotiation state */
unsigned char disconnect_ok:1; /* device can disconnect */
} device[8];
unsigned long busyluns[64 / sizeof(unsigned long)];/* array of bits indicating LUNs busy */
/* DMA info */
struct {
unsigned int free_addr; /* next free address */
unsigned int start_addr; /* start address of current transfer */
dmadir_t direction; /* dma direction */
unsigned int transferred; /* number of bytes transferred */
unsigned int xfer_start; /* scheduled DMA transfer start */
unsigned int xfer_length; /* scheduled DMA transfer length */
char *xfer_ptr; /* pointer to area */
unsigned char xfer_required:1; /* set if we need to transfer something */
unsigned char xfer_setup:1; /* set if DMA is setup */
unsigned char xfer_done:1; /* set if DMA reached end of BH list */
} dma;
/* card info */
struct {
unsigned char page_reg; /* current setting of page reg */
} card;
unsigned char status_ptr[9];
struct status_entry status[9][STATUS_BUFFER_SIZE];
} AS_Host;
#endif /* ACORNSCSI_H */
|