This source file includes following definitions.
- end_request
- end_request
1 #ifndef _BLK_H
2 #define _BLK_H
3
4 #include <linux/blkdev.h>
5 #include <linux/locks.h>
6 #include <linux/config.h>
7
8
9
10
11
12
13 #define NR_REQUEST 64
14
15
16
17
18
19
20 #define IN_ORDER(s1,s2) \
21 ((s1)->cmd < (s2)->cmd || ((s1)->cmd == (s2)->cmd && \
22 ((s1)->dev < (s2)->dev || (((s1)->dev == (s2)->dev && \
23 (s1)->sector < (s2)->sector)))))
24
25
26
27
28
29 #ifdef IDE_DRIVER
30 #define SECTOR_MASK ((BLOCK_SIZE >> 9) - 1)
31 #else
32 #define SECTOR_MASK (blksize_size[MAJOR_NR] && \
33 blksize_size[MAJOR_NR][MINOR(CURRENT->dev)] ? \
34 ((blksize_size[MAJOR_NR][MINOR(CURRENT->dev)] >> 9) - 1) : \
35 ((BLOCK_SIZE >> 9) - 1))
36 #endif
37
38 #define SUBSECTOR(block) (CURRENT->current_nr_sectors > 0)
39
40 #ifdef CONFIG_CDU31A
41 extern unsigned long cdu31a_init(unsigned long, unsigned long);
42 #endif CONFIG_CDU31A
43 #ifdef CONFIG_MCD
44 extern unsigned long mcd_init(unsigned long, unsigned long);
45 #endif CONFIG_MCD
46 #ifdef CONFIG_MCDX
47 extern unsigned long mcdx_init(unsigned long, unsigned long);
48 #endif CONFIG_MCDX
49 #ifdef CONFIG_SBPCD
50 extern unsigned long sbpcd_init(unsigned long, unsigned long);
51 #endif CONFIG_SBPCD
52 #ifdef CONFIG_AZTCD
53 extern unsigned long aztcd_init(unsigned long, unsigned long);
54 #endif CONFIG_AZTCD
55 #ifdef CONFIG_CDU535
56 extern unsigned long sony535_init(unsigned long, unsigned long);
57 #endif CONFIG_CDU535
58 #ifdef CONFIG_GSCD
59 extern unsigned long gscd_init(unsigned long, unsigned long);
60 #endif CONFIG_GSCD
61 #ifdef CONFIG_CM206
62 extern unsigned long cm206_init(unsigned long, unsigned long);
63 #endif CONFIG_CM206
64 #ifdef CONFIG_OPTCD
65 extern unsigned long optcd_init(unsigned long, unsigned long);
66 #endif CONFIG_OPTCD
67 #ifdef CONFIG_SJCD
68 extern unsigned long sjcd_init(unsigned long, unsigned long);
69 #endif CONFIG_SJCD
70 #ifdef CONFIG_BLK_DEV_HD
71 extern unsigned long hd_init(unsigned long mem_start, unsigned long mem_end);
72 #endif
73 #ifdef CONFIG_BLK_DEV_IDE
74 extern unsigned long ide_init(unsigned long mem_start, unsigned long mem_end);
75 #endif
76 extern void set_device_ro(int dev,int flag);
77
78 extern int floppy_init(void);
79 extern void rd_load(void);
80 extern long rd_init(long mem_start, int length);
81 extern int ramdisk_size;
82
83 extern unsigned long xd_init(unsigned long mem_start, unsigned long mem_end);
84
85 #define RO_IOCTLS(dev,where) \
86 case BLKROSET: if (!suser()) return -EACCES; \
87 set_device_ro((dev),get_fs_long((long *) (where))); return 0; \
88 case BLKROGET: { int __err = verify_area(VERIFY_WRITE, (void *) (where), sizeof(long)); \
89 if (!__err) put_fs_long(0!=is_read_only(dev),(long *) (where)); return __err; }
90
91 #if defined(MAJOR_NR) || defined(IDE_DRIVER)
92
93
94
95
96
97 #ifdef IDE_DRIVER
98
99 #define DEVICE_NR(device) (MINOR(device) >> PARTN_BITS)
100 #define DEVICE_ON(device)
101 #define DEVICE_OFF(device)
102
103 #elif (MAJOR_NR == MEM_MAJOR)
104
105
106 #define DEVICE_NAME "ramdisk"
107 #define DEVICE_REQUEST do_rd_request
108 #define DEVICE_NR(device) ((device) & 7)
109 #define DEVICE_ON(device)
110 #define DEVICE_OFF(device)
111
112 #elif (MAJOR_NR == FLOPPY_MAJOR)
113
114 static void floppy_off(unsigned int nr);
115
116 #define DEVICE_NAME "floppy"
117 #define DEVICE_INTR do_floppy
118 #define DEVICE_REQUEST do_fd_request
119 #define DEVICE_NR(device) ( ((device) & 3) | (((device) & 0x80 ) >> 5 ))
120 #define DEVICE_ON(device)
121 #define DEVICE_OFF(device) floppy_off(DEVICE_NR(device))
122
123 #elif (MAJOR_NR == HD_MAJOR)
124
125
126 #define DEVICE_NAME "harddisk"
127 #define DEVICE_INTR do_hd
128 #define DEVICE_TIMEOUT HD_TIMER
129 #define TIMEOUT_VALUE 600
130 #define DEVICE_REQUEST do_hd_request
131 #define DEVICE_NR(device) (MINOR(device)>>6)
132 #define DEVICE_ON(device)
133 #define DEVICE_OFF(device)
134
135 #elif (MAJOR_NR == SCSI_DISK_MAJOR)
136
137 #define DEVICE_NAME "scsidisk"
138 #define DEVICE_INTR do_sd
139 #define TIMEOUT_VALUE 200
140 #define DEVICE_REQUEST do_sd_request
141 #define DEVICE_NR(device) (MINOR(device) >> 4)
142 #define DEVICE_ON(device)
143 #define DEVICE_OFF(device)
144
145 #elif (MAJOR_NR == SCSI_TAPE_MAJOR)
146
147 #define DEVICE_NAME "scsitape"
148 #define DEVICE_INTR do_st
149 #define DEVICE_NR(device) (MINOR(device) & 0x7f)
150 #define DEVICE_ON(device)
151 #define DEVICE_OFF(device)
152
153 #elif (MAJOR_NR == SCSI_CDROM_MAJOR)
154
155 #define DEVICE_NAME "CD-ROM"
156 #define DEVICE_INTR do_sr
157 #define DEVICE_REQUEST do_sr_request
158 #define DEVICE_NR(device) (MINOR(device))
159 #define DEVICE_ON(device)
160 #define DEVICE_OFF(device)
161
162 #elif (MAJOR_NR == XT_DISK_MAJOR)
163
164 #define DEVICE_NAME "xt disk"
165 #define DEVICE_REQUEST do_xd_request
166 #define DEVICE_NR(device) (MINOR(device) >> 6)
167 #define DEVICE_ON(device)
168 #define DEVICE_OFF(device)
169
170 #elif (MAJOR_NR == CDU31A_CDROM_MAJOR)
171
172 #define DEVICE_NAME "CDU31A"
173 #define DEVICE_REQUEST do_cdu31a_request
174 #define DEVICE_NR(device) (MINOR(device))
175 #define DEVICE_ON(device)
176 #define DEVICE_OFF(device)
177
178 #elif (MAJOR_NR == MITSUMI_CDROM_MAJOR)
179
180 #define DEVICE_NAME "Mitsumi CD-ROM"
181
182 #define DEVICE_REQUEST do_mcd_request
183 #define DEVICE_NR(device) (MINOR(device))
184 #define DEVICE_ON(device)
185 #define DEVICE_OFF(device)
186
187 #elif (MAJOR_NR == MITSUMI_X_CDROM_MAJOR)
188
189 #define DEVICE_NAME "Mitsumi CD-ROM"
190
191 #define DEVICE_REQUEST do_mcdx_request
192 #define DEVICE_NR(device) (MINOR(device))
193 #define DEVICE_ON(device)
194 #define DEVICE_OFF(device)
195
196 #elif (MAJOR_NR == MATSUSHITA_CDROM_MAJOR)
197
198 #define DEVICE_NAME "Matsushita CD-ROM controller #1"
199 #define DEVICE_REQUEST do_sbpcd_request
200 #define DEVICE_NR(device) (MINOR(device))
201 #define DEVICE_ON(device)
202 #define DEVICE_OFF(device)
203
204 #elif (MAJOR_NR == MATSUSHITA_CDROM2_MAJOR)
205
206 #define DEVICE_NAME "Matsushita CD-ROM controller #2"
207 #define DEVICE_REQUEST do_sbpcd2_request
208 #define DEVICE_NR(device) (MINOR(device))
209 #define DEVICE_ON(device)
210 #define DEVICE_OFF(device)
211
212 #elif (MAJOR_NR == MATSUSHITA_CDROM3_MAJOR)
213
214 #define DEVICE_NAME "Matsushita CD-ROM controller #3"
215 #define DEVICE_REQUEST do_sbpcd3_request
216 #define DEVICE_NR(device) (MINOR(device))
217 #define DEVICE_ON(device)
218 #define DEVICE_OFF(device)
219
220 #elif (MAJOR_NR == MATSUSHITA_CDROM4_MAJOR)
221
222 #define DEVICE_NAME "Matsushita CD-ROM controller #4"
223 #define DEVICE_REQUEST do_sbpcd4_request
224 #define DEVICE_NR(device) (MINOR(device))
225 #define DEVICE_ON(device)
226 #define DEVICE_OFF(device)
227
228 #elif (MAJOR_NR == AZTECH_CDROM_MAJOR)
229
230 #define DEVICE_NAME "Aztech CD-ROM"
231 #define DEVICE_REQUEST do_aztcd_request
232 #define DEVICE_NR(device) (MINOR(device))
233 #define DEVICE_ON(device)
234 #define DEVICE_OFF(device)
235
236 #elif (MAJOR_NR == CDU535_CDROM_MAJOR)
237
238 #define DEVICE_NAME "SONY-CDU535"
239 #define DEVICE_INTR do_cdu535
240 #define DEVICE_REQUEST do_cdu535_request
241 #define DEVICE_NR(device) (MINOR(device))
242 #define DEVICE_ON(device)
243 #define DEVICE_OFF(device)
244
245 #elif (MAJOR_NR == GOLDSTAR_CDROM_MAJOR)
246
247 #define DEVICE_NAME "Goldstar R420"
248 #define DEVICE_REQUEST do_gscd_request
249 #define DEVICE_NR(device) (MINOR(device))
250 #define DEVICE_ON(device)
251 #define DEVICE_OFF(device)
252
253 #elif (MAJOR_NR == CM206_CDROM_MAJOR)
254 #define DEVICE_NAME "Philips/LMS cd-rom cm206"
255 #define DEVICE_REQUEST do_cm206_request
256 #define DEVICE_NR(device) (MINOR(device))
257 #define DEVICE_ON(device)
258 #define DEVICE_OFF(device)
259
260 #elif (MAJOR_NR == OPTICS_CDROM_MAJOR)
261
262 #define DEVICE_NAME "DOLPHIN 8000AT CD-ROM"
263 #define DEVICE_REQUEST do_optcd_request
264 #define DEVICE_NR(device) (MINOR(device))
265 #define DEVICE_ON(device)
266 #define DEVICE_OFF(device)
267
268 #elif (MAJOR_NR == SANYO_CDROM_MAJOR)
269
270 #define DEVICE_NAME "Sanyo H94A CD-ROM"
271 #define DEVICE_REQUEST do_sjcd_request
272 #define DEVICE_NR(device) (MINOR(device))
273 #define DEVICE_ON(device)
274 #define DEVICE_OFF(device)
275
276 #endif
277
278 #if (MAJOR_NR != SCSI_TAPE_MAJOR) && !defined(IDE_DRIVER)
279
280 #ifndef CURRENT
281 #define CURRENT (blk_dev[MAJOR_NR].current_request)
282 #endif
283
284 #define CURRENT_DEV DEVICE_NR(CURRENT->dev)
285
286 #ifdef DEVICE_INTR
287 void (*DEVICE_INTR)(void) = NULL;
288 #endif
289 #ifdef DEVICE_TIMEOUT
290
291 #define SET_TIMER \
292 ((timer_table[DEVICE_TIMEOUT].expires = jiffies + TIMEOUT_VALUE), \
293 (timer_active |= 1<<DEVICE_TIMEOUT))
294
295 #define CLEAR_TIMER \
296 timer_active &= ~(1<<DEVICE_TIMEOUT)
297
298 #define SET_INTR(x) \
299 if ((DEVICE_INTR = (x)) != NULL) \
300 SET_TIMER; \
301 else \
302 CLEAR_TIMER;
303
304 #else
305
306 #define SET_INTR(x) (DEVICE_INTR = (x))
307
308 #endif
309
310 static void (DEVICE_REQUEST)(void);
311
312 #ifdef DEVICE_INTR
313 #define CLEAR_INTR SET_INTR(NULL)
314 #else
315 #define CLEAR_INTR
316 #endif
317
318 #define INIT_REQUEST \
319 if (!CURRENT) {\
320 CLEAR_INTR; \
321 return; \
322 } \
323 if (MAJOR(CURRENT->dev) != MAJOR_NR) \
324 panic(DEVICE_NAME ": request list destroyed"); \
325 if (CURRENT->bh) { \
326 if (!CURRENT->bh->b_lock) \
327 panic(DEVICE_NAME ": block not locked"); \
328 }
329
330 #endif
331
332
333
334 #if ! SCSI_MAJOR(MAJOR_NR)
335
336 #ifdef IDE_DRIVER
337 static void end_request(byte uptodate, byte hwif) {
338 struct request *req = ide_cur_rq[HWIF];
339 #else
340 static void end_request(int uptodate) {
341 struct request *req = CURRENT;
342 #endif
343 struct buffer_head * bh;
344
345 req->errors = 0;
346 if (!uptodate) {
347 printk("end_request: I/O error, dev %04lX, sector %lu\n",
348 (unsigned long)req->dev, req->sector);
349 req->nr_sectors--;
350 req->nr_sectors &= ~SECTOR_MASK;
351 req->sector += (BLOCK_SIZE / 512);
352 req->sector &= ~SECTOR_MASK;
353 }
354
355 if ((bh = req->bh) != NULL) {
356 req->bh = bh->b_reqnext;
357 bh->b_reqnext = NULL;
358 bh->b_uptodate = uptodate;
359 if (!uptodate) bh->b_req = 0;
360 unlock_buffer(bh);
361 if ((bh = req->bh) != NULL) {
362 req->current_nr_sectors = bh->b_size >> 9;
363 if (req->nr_sectors < req->current_nr_sectors) {
364 req->nr_sectors = req->current_nr_sectors;
365 printk("end_request: buffer-list destroyed\n");
366 }
367 req->buffer = bh->b_data;
368 return;
369 }
370 }
371 #ifdef IDE_DRIVER
372 ide_cur_rq[HWIF] = NULL;
373 #else
374 DEVICE_OFF(req->dev);
375 CURRENT = req->next;
376 #endif
377 if (req->sem != NULL)
378 up(req->sem);
379 req->dev = -1;
380 wake_up(&wait_for_request);
381 }
382 #endif
383
384 #endif
385
386 #endif