Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Generic Generic NCR5380 driver | |
3 | * | |
4 | * Copyright 1993, Drew Eckhardt | |
5 | * Visionary Computing | |
6 | * (Unix and Linux consulting and custom programming) | |
7 | * drew@colorado.edu | |
8 | * +1 (303) 440-4894 | |
9 | * | |
10 | * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin | |
11 | * K.Lentin@cs.monash.edu.au | |
12 | * | |
13 | * NCR53C400A extensions (c) 1996, Ingmar Baumgart | |
14 | * ingmar@gonzo.schwaben.de | |
15 | * | |
16 | * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg | |
17 | * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl | |
18 | * | |
19 | * Added ISAPNP support for DTC436 adapters, | |
20 | * Thomas Sailer, sailer@ife.ee.ethz.ch | |
1da177e4 LT |
21 | */ |
22 | ||
23 | /* | |
24 | * TODO : flesh out DMA support, find some one actually using this (I have | |
25 | * a memory mapped Trantor board that works fine) | |
26 | */ | |
27 | ||
28 | /* | |
1da177e4 LT |
29 | * The card is detected and initialized in one of several ways : |
30 | * 1. With command line overrides - NCR5380=port,irq may be | |
31 | * used on the LILO command line to override the defaults. | |
32 | * | |
33 | * 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is | |
34 | * specified as an array of address, irq, dma, board tuples. Ie, for | |
35 | * one board at 0x350, IRQ5, no dma, I could say | |
36 | * -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}} | |
37 | * | |
38 | * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an | |
39 | * IRQ line if overridden on the command line. | |
40 | * | |
41 | * 3. When included as a module, with arguments passed on the command line: | |
42 | * ncr_irq=xx the interrupt | |
43 | * ncr_addr=xx the port or base address (for port or memory | |
44 | * mapped, resp.) | |
45 | * ncr_dma=xx the DMA | |
46 | * ncr_5380=1 to set up for a NCR5380 board | |
47 | * ncr_53c400=1 to set up for a NCR53C400 board | |
48 | * e.g. | |
49 | * modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 | |
50 | * for a port mapped NCR5380 board or | |
51 | * modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 | |
52 | * for a memory mapped NCR53C400 board with interrupts disabled. | |
53 | * | |
54 | * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an | |
55 | * IRQ line if overridden on the command line. | |
56 | * | |
57 | */ | |
58 | ||
1da177e4 | 59 | #define AUTOPROBE_IRQ |
1da177e4 LT |
60 | |
61 | #ifdef CONFIG_SCSI_GENERIC_NCR53C400 | |
1da177e4 | 62 | #define PSEUDO_DMA |
1da177e4 LT |
63 | #endif |
64 | ||
1da177e4 | 65 | #include <asm/io.h> |
1da177e4 | 66 | #include <linux/blkdev.h> |
161c0059 | 67 | #include <linux/module.h> |
1da177e4 LT |
68 | #include <scsi/scsi_host.h> |
69 | #include "g_NCR5380.h" | |
70 | #include "NCR5380.h" | |
1da177e4 LT |
71 | #include <linux/init.h> |
72 | #include <linux/ioport.h> | |
73 | #include <linux/isapnp.h> | |
1da177e4 LT |
74 | #include <linux/interrupt.h> |
75 | ||
c0965e63 FT |
76 | static int ncr_irq; |
77 | static int ncr_dma; | |
78 | static int ncr_addr; | |
79 | static int ncr_5380; | |
80 | static int ncr_53c400; | |
81 | static int ncr_53c400a; | |
82 | static int dtc_3181e; | |
1da177e4 LT |
83 | |
84 | static struct override { | |
c818cb64 | 85 | NCR5380_map_type NCR5380_map_name; |
1da177e4 LT |
86 | int irq; |
87 | int dma; | |
88 | int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ | |
89 | } overrides | |
90 | #ifdef GENERIC_NCR5380_OVERRIDE | |
91 | [] __initdata = GENERIC_NCR5380_OVERRIDE; | |
92 | #else | |
93 | [1] __initdata = { { 0,},}; | |
94 | #endif | |
95 | ||
6391a113 | 96 | #define NO_OVERRIDES ARRAY_SIZE(overrides) |
1da177e4 | 97 | |
6391a113 | 98 | #ifndef MODULE |
1da177e4 LT |
99 | |
100 | /** | |
101 | * internal_setup - handle lilo command string override | |
102 | * @board: BOARD_* identifier for the board | |
103 | * @str: unused | |
104 | * @ints: numeric parameters | |
105 | * | |
106 | * Do LILO command line initialization of the overrides array. Display | |
107 | * errors when needed | |
108 | * | |
109 | * Locks: none | |
110 | */ | |
111 | ||
112 | static void __init internal_setup(int board, char *str, int *ints) | |
113 | { | |
d5f7e65d | 114 | static int commandline_current; |
1da177e4 LT |
115 | switch (board) { |
116 | case BOARD_NCR5380: | |
117 | if (ints[0] != 2 && ints[0] != 3) { | |
118 | printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); | |
119 | return; | |
120 | } | |
121 | break; | |
122 | case BOARD_NCR53C400: | |
123 | if (ints[0] != 2) { | |
124 | printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); | |
125 | return; | |
126 | } | |
127 | break; | |
128 | case BOARD_NCR53C400A: | |
129 | if (ints[0] != 2) { | |
130 | printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); | |
131 | return; | |
132 | } | |
133 | break; | |
134 | case BOARD_DTC3181E: | |
135 | if (ints[0] != 2) { | |
136 | printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); | |
137 | return; | |
138 | } | |
139 | break; | |
140 | } | |
141 | ||
142 | if (commandline_current < NO_OVERRIDES) { | |
143 | overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; | |
144 | overrides[commandline_current].irq = ints[2]; | |
145 | if (ints[0] == 3) | |
146 | overrides[commandline_current].dma = ints[3]; | |
147 | else | |
148 | overrides[commandline_current].dma = DMA_NONE; | |
149 | overrides[commandline_current].board = board; | |
150 | ++commandline_current; | |
151 | } | |
152 | } | |
153 | ||
154 | ||
155 | /** | |
156 | * do_NCR53C80_setup - set up entry point | |
157 | * @str: unused | |
158 | * | |
159 | * Setup function invoked at boot to parse the ncr5380= command | |
160 | * line. | |
161 | */ | |
162 | ||
163 | static int __init do_NCR5380_setup(char *str) | |
164 | { | |
165 | int ints[10]; | |
166 | ||
6391a113 | 167 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
168 | internal_setup(BOARD_NCR5380, str, ints); |
169 | return 1; | |
170 | } | |
171 | ||
172 | /** | |
173 | * do_NCR53C400_setup - set up entry point | |
174 | * @str: unused | |
6391a113 | 175 | * @ints: integer parameters from kernel setup code |
1da177e4 LT |
176 | * |
177 | * Setup function invoked at boot to parse the ncr53c400= command | |
178 | * line. | |
179 | */ | |
180 | ||
181 | static int __init do_NCR53C400_setup(char *str) | |
182 | { | |
183 | int ints[10]; | |
184 | ||
6391a113 | 185 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
186 | internal_setup(BOARD_NCR53C400, str, ints); |
187 | return 1; | |
188 | } | |
189 | ||
190 | /** | |
191 | * do_NCR53C400A_setup - set up entry point | |
192 | * @str: unused | |
6391a113 | 193 | * @ints: integer parameters from kernel setup code |
1da177e4 LT |
194 | * |
195 | * Setup function invoked at boot to parse the ncr53c400a= command | |
196 | * line. | |
197 | */ | |
198 | ||
199 | static int __init do_NCR53C400A_setup(char *str) | |
200 | { | |
201 | int ints[10]; | |
202 | ||
6391a113 | 203 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
204 | internal_setup(BOARD_NCR53C400A, str, ints); |
205 | return 1; | |
206 | } | |
207 | ||
208 | /** | |
209 | * do_DTC3181E_setup - set up entry point | |
210 | * @str: unused | |
6391a113 | 211 | * @ints: integer parameters from kernel setup code |
1da177e4 LT |
212 | * |
213 | * Setup function invoked at boot to parse the dtc3181e= command | |
214 | * line. | |
215 | */ | |
216 | ||
217 | static int __init do_DTC3181E_setup(char *str) | |
218 | { | |
219 | int ints[10]; | |
220 | ||
6391a113 | 221 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
222 | internal_setup(BOARD_DTC3181E, str, ints); |
223 | return 1; | |
224 | } | |
225 | ||
226 | #endif | |
227 | ||
228 | /** | |
229 | * generic_NCR5380_detect - look for NCR5380 controllers | |
230 | * @tpnt: the scsi template | |
231 | * | |
232 | * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E | |
233 | * and DTC436(ISAPnP) controllers. If overrides have been set we use | |
234 | * them. | |
235 | * | |
1da177e4 LT |
236 | * Locks: none |
237 | */ | |
238 | ||
ed8b9e7f | 239 | static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) |
1da177e4 | 240 | { |
d5f7e65d | 241 | static int current_override; |
702a98c6 | 242 | int count; |
1da177e4 | 243 | unsigned int *ports; |
702a98c6 OZ |
244 | #ifndef SCSI_G_NCR5380_MEM |
245 | int i; | |
1da177e4 | 246 | unsigned long region_size = 16; |
702a98c6 | 247 | #endif |
1da177e4 LT |
248 | static unsigned int __initdata ncr_53c400a_ports[] = { |
249 | 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 | |
250 | }; | |
251 | static unsigned int __initdata dtc_3181e_ports[] = { | |
252 | 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 | |
253 | }; | |
4d8c08c7 | 254 | int flags; |
1da177e4 | 255 | struct Scsi_Host *instance; |
702a98c6 | 256 | #ifdef SCSI_G_NCR5380_MEM |
c818cb64 AV |
257 | unsigned long base; |
258 | void __iomem *iomem; | |
259 | #endif | |
1da177e4 | 260 | |
c0965e63 | 261 | if (ncr_irq) |
1da177e4 | 262 | overrides[0].irq = ncr_irq; |
c0965e63 | 263 | if (ncr_dma) |
1da177e4 | 264 | overrides[0].dma = ncr_dma; |
c0965e63 | 265 | if (ncr_addr) |
1da177e4 | 266 | overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; |
c0965e63 | 267 | if (ncr_5380) |
1da177e4 | 268 | overrides[0].board = BOARD_NCR5380; |
c0965e63 | 269 | else if (ncr_53c400) |
1da177e4 | 270 | overrides[0].board = BOARD_NCR53C400; |
c0965e63 | 271 | else if (ncr_53c400a) |
1da177e4 | 272 | overrides[0].board = BOARD_NCR53C400A; |
c0965e63 | 273 | else if (dtc_3181e) |
1da177e4 | 274 | overrides[0].board = BOARD_DTC3181E; |
702a98c6 | 275 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
276 | if (!current_override && isapnp_present()) { |
277 | struct pnp_dev *dev = NULL; | |
278 | count = 0; | |
279 | while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { | |
280 | if (count >= NO_OVERRIDES) | |
281 | break; | |
c94babba | 282 | if (pnp_device_attach(dev) < 0) |
1da177e4 | 283 | continue; |
1da177e4 LT |
284 | if (pnp_activate_dev(dev) < 0) { |
285 | printk(KERN_ERR "dtc436e probe: activate failed\n"); | |
286 | pnp_device_detach(dev); | |
287 | continue; | |
288 | } | |
289 | if (!pnp_port_valid(dev, 0)) { | |
290 | printk(KERN_ERR "dtc436e probe: no valid port\n"); | |
291 | pnp_device_detach(dev); | |
292 | continue; | |
293 | } | |
294 | if (pnp_irq_valid(dev, 0)) | |
295 | overrides[count].irq = pnp_irq(dev, 0); | |
296 | else | |
22f5f10d | 297 | overrides[count].irq = NO_IRQ; |
1da177e4 LT |
298 | if (pnp_dma_valid(dev, 0)) |
299 | overrides[count].dma = pnp_dma(dev, 0); | |
300 | else | |
301 | overrides[count].dma = DMA_NONE; | |
302 | overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); | |
303 | overrides[count].board = BOARD_DTC3181E; | |
304 | count++; | |
305 | } | |
306 | } | |
702a98c6 | 307 | #endif |
1da177e4 LT |
308 | |
309 | for (count = 0; current_override < NO_OVERRIDES; ++current_override) { | |
310 | if (!(overrides[current_override].NCR5380_map_name)) | |
311 | continue; | |
312 | ||
313 | ports = NULL; | |
4d8c08c7 | 314 | flags = 0; |
1da177e4 LT |
315 | switch (overrides[current_override].board) { |
316 | case BOARD_NCR5380: | |
317 | flags = FLAG_NO_PSEUDO_DMA; | |
318 | break; | |
319 | case BOARD_NCR53C400: | |
4d8c08c7 | 320 | #ifdef PSEUDO_DMA |
55181be8 | 321 | flags = FLAG_NO_DMA_FIXUP; |
4d8c08c7 | 322 | #endif |
1da177e4 LT |
323 | break; |
324 | case BOARD_NCR53C400A: | |
325 | flags = FLAG_NO_PSEUDO_DMA; | |
326 | ports = ncr_53c400a_ports; | |
327 | break; | |
328 | case BOARD_DTC3181E: | |
be3f4121 | 329 | flags = FLAG_NO_PSEUDO_DMA; |
1da177e4 LT |
330 | ports = dtc_3181e_ports; |
331 | break; | |
332 | } | |
333 | ||
702a98c6 | 334 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
335 | if (ports) { |
336 | /* wakeup sequence for the NCR53C400A and DTC3181E */ | |
337 | ||
338 | /* Disable the adapter and look for a free io port */ | |
339 | outb(0x59, 0x779); | |
340 | outb(0xb9, 0x379); | |
341 | outb(0xc5, 0x379); | |
342 | outb(0xae, 0x379); | |
343 | outb(0xa6, 0x379); | |
344 | outb(0x00, 0x379); | |
345 | ||
346 | if (overrides[current_override].NCR5380_map_name != PORT_AUTO) | |
347 | for (i = 0; ports[i]; i++) { | |
348 | if (!request_region(ports[i], 16, "ncr53c80")) | |
349 | continue; | |
350 | if (overrides[current_override].NCR5380_map_name == ports[i]) | |
351 | break; | |
352 | release_region(ports[i], 16); | |
353 | } else | |
354 | for (i = 0; ports[i]; i++) { | |
355 | if (!request_region(ports[i], 16, "ncr53c80")) | |
356 | continue; | |
357 | if (inb(ports[i]) == 0xff) | |
358 | break; | |
359 | release_region(ports[i], 16); | |
360 | } | |
361 | if (ports[i]) { | |
362 | /* At this point we have our region reserved */ | |
363 | outb(0x59, 0x779); | |
364 | outb(0xb9, 0x379); | |
365 | outb(0xc5, 0x379); | |
366 | outb(0xae, 0x379); | |
367 | outb(0xa6, 0x379); | |
368 | outb(0x80 | i, 0x379); /* set io port to be used */ | |
369 | outb(0xc0, ports[i] + 9); | |
370 | if (inb(ports[i] + 9) != 0x80) | |
371 | continue; | |
372 | else | |
373 | overrides[current_override].NCR5380_map_name = ports[i]; | |
374 | } else | |
375 | continue; | |
376 | } | |
377 | else | |
378 | { | |
379 | /* Not a 53C400A style setup - just grab */ | |
380 | if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) | |
381 | continue; | |
382 | region_size = NCR5380_region_size; | |
383 | } | |
384 | #else | |
c818cb64 AV |
385 | base = overrides[current_override].NCR5380_map_name; |
386 | if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) | |
387 | continue; | |
388 | iomem = ioremap(base, NCR5380_region_size); | |
389 | if (!iomem) { | |
390 | release_mem_region(base, NCR5380_region_size); | |
1da177e4 | 391 | continue; |
c818cb64 | 392 | } |
1da177e4 LT |
393 | #endif |
394 | instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); | |
0ad0eff9 FT |
395 | if (instance == NULL) |
396 | goto out_release; | |
1da177e4 | 397 | |
702a98c6 | 398 | #ifndef SCSI_G_NCR5380_MEM |
b01ec348 | 399 | instance->io_port = overrides[current_override].NCR5380_map_name; |
1da177e4 | 400 | instance->n_io_port = region_size; |
4d8c08c7 FT |
401 | |
402 | /* | |
403 | * On NCR53C400 boards, NCR5380 registers are mapped 8 past | |
404 | * the base address. | |
405 | */ | |
406 | if (overrides[current_override].board == BOARD_NCR53C400) | |
407 | instance->io_port += 8; | |
c818cb64 | 408 | #else |
b01ec348 | 409 | instance->base = overrides[current_override].NCR5380_map_name; |
702a98c6 | 410 | ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem; |
1da177e4 LT |
411 | #endif |
412 | ||
0ad0eff9 FT |
413 | if (NCR5380_init(instance, flags)) |
414 | goto out_unregister; | |
1da177e4 | 415 | |
4d8c08c7 FT |
416 | if (overrides[current_override].board == BOARD_NCR53C400) |
417 | NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); | |
418 | ||
b6488f97 FT |
419 | NCR5380_maybe_reset_bus(instance); |
420 | ||
1da177e4 LT |
421 | if (overrides[current_override].irq != IRQ_AUTO) |
422 | instance->irq = overrides[current_override].irq; | |
423 | else | |
424 | instance->irq = NCR5380_probe_irq(instance, 0xffff); | |
425 | ||
22f5f10d FT |
426 | /* Compatibility with documented NCR5380 kernel parameters */ |
427 | if (instance->irq == 255) | |
428 | instance->irq = NO_IRQ; | |
429 | ||
430 | if (instance->irq != NO_IRQ) | |
1e641664 | 431 | if (request_irq(instance->irq, generic_NCR5380_intr, |
4909cc2b | 432 | 0, "NCR5380", instance)) { |
1da177e4 | 433 | printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); |
22f5f10d | 434 | instance->irq = NO_IRQ; |
1da177e4 LT |
435 | } |
436 | ||
22f5f10d | 437 | if (instance->irq == NO_IRQ) { |
1da177e4 LT |
438 | printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); |
439 | printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); | |
440 | } | |
441 | ||
1da177e4 LT |
442 | ++current_override; |
443 | ++count; | |
444 | } | |
445 | return count; | |
0ad0eff9 FT |
446 | |
447 | out_unregister: | |
448 | scsi_unregister(instance); | |
449 | out_release: | |
450 | #ifndef SCSI_G_NCR5380_MEM | |
451 | release_region(overrides[current_override].NCR5380_map_name, region_size); | |
452 | #else | |
453 | iounmap(iomem); | |
454 | release_mem_region(base, NCR5380_region_size); | |
455 | #endif | |
456 | return count; | |
1da177e4 LT |
457 | } |
458 | ||
1da177e4 LT |
459 | /** |
460 | * generic_NCR5380_release_resources - free resources | |
461 | * @instance: host adapter to clean up | |
462 | * | |
463 | * Free the generic interface resources from this adapter. | |
464 | * | |
465 | * Locks: none | |
466 | */ | |
467 | ||
ed8b9e7f | 468 | static int generic_NCR5380_release_resources(struct Scsi_Host *instance) |
1da177e4 | 469 | { |
22f5f10d | 470 | if (instance->irq != NO_IRQ) |
1e641664 | 471 | free_irq(instance->irq, instance); |
1da177e4 | 472 | NCR5380_exit(instance); |
702a98c6 | 473 | #ifndef SCSI_G_NCR5380_MEM |
b01ec348 | 474 | release_region(instance->io_port, instance->n_io_port); |
1da177e4 | 475 | #else |
702a98c6 | 476 | iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem); |
b01ec348 | 477 | release_mem_region(instance->base, NCR5380_region_size); |
1da177e4 | 478 | #endif |
1da177e4 LT |
479 | return 0; |
480 | } | |
481 | ||
482 | #ifdef BIOSPARAM | |
483 | /** | |
484 | * generic_NCR5380_biosparam | |
485 | * @disk: disk to compute geometry for | |
486 | * @dev: device identifier for this disk | |
487 | * @ip: sizes to fill in | |
488 | * | |
489 | * Generates a BIOS / DOS compatible H-C-S mapping for the specified | |
490 | * device / size. | |
491 | * | |
492 | * XXX Most SCSI boards use this mapping, I could be incorrect. Someone | |
493 | * using hard disks on a trantor should verify that this mapping | |
494 | * corresponds to that used by the BIOS / ASPI driver by running the linux | |
495 | * fdisk program and matching the H_C_S coordinates to what DOS uses. | |
496 | * | |
497 | * Locks: none | |
498 | */ | |
499 | ||
500 | static int | |
501 | generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, | |
502 | sector_t capacity, int *ip) | |
503 | { | |
504 | ip[0] = 64; | |
505 | ip[1] = 32; | |
506 | ip[2] = capacity >> 11; | |
507 | return 0; | |
508 | } | |
509 | #endif | |
510 | ||
4d8c08c7 | 511 | #ifdef PSEUDO_DMA |
1da177e4 LT |
512 | |
513 | /** | |
514 | * NCR5380_pread - pseudo DMA read | |
515 | * @instance: adapter to read from | |
516 | * @dst: buffer to read into | |
517 | * @len: buffer length | |
518 | * | |
25985edc | 519 | * Perform a pseudo DMA mode read from an NCR53C400 or equivalent |
1da177e4 LT |
520 | * controller |
521 | */ | |
522 | ||
523 | static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) | |
524 | { | |
54d8fe44 FT |
525 | #ifdef SCSI_G_NCR5380_MEM |
526 | struct NCR5380_hostdata *hostdata = shost_priv(instance); | |
527 | #endif | |
1da177e4 LT |
528 | int blocks = len / 128; |
529 | int start = 0; | |
530 | int bl; | |
531 | ||
1da177e4 LT |
532 | NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); |
533 | NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); | |
534 | while (1) { | |
535 | if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { | |
536 | break; | |
537 | } | |
538 | if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { | |
539 | printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); | |
540 | return -1; | |
541 | } | |
542 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); | |
543 | ||
702a98c6 | 544 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
545 | { |
546 | int i; | |
547 | for (i = 0; i < 128; i++) | |
548 | dst[start + i] = NCR5380_read(C400_HOST_BUFFER); | |
549 | } | |
550 | #else | |
702a98c6 | 551 | /* implies SCSI_G_NCR5380_MEM */ |
54d8fe44 FT |
552 | memcpy_fromio(dst + start, |
553 | hostdata->iomem + NCR53C400_host_buffer, 128); | |
1da177e4 LT |
554 | #endif |
555 | start += 128; | |
556 | blocks--; | |
557 | } | |
558 | ||
559 | if (blocks) { | |
560 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) | |
561 | { | |
562 | // FIXME - no timeout | |
563 | } | |
564 | ||
702a98c6 | 565 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
566 | { |
567 | int i; | |
568 | for (i = 0; i < 128; i++) | |
569 | dst[start + i] = NCR5380_read(C400_HOST_BUFFER); | |
570 | } | |
571 | #else | |
702a98c6 | 572 | /* implies SCSI_G_NCR5380_MEM */ |
54d8fe44 FT |
573 | memcpy_fromio(dst + start, |
574 | hostdata->iomem + NCR53C400_host_buffer, 128); | |
1da177e4 LT |
575 | #endif |
576 | start += 128; | |
577 | blocks--; | |
578 | } | |
579 | ||
580 | if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) | |
581 | printk("53C400r: no 53C80 gated irq after transfer"); | |
582 | ||
583 | #if 0 | |
584 | /* | |
585 | * DON'T DO THIS - THEY NEVER ARRIVE! | |
586 | */ | |
587 | printk("53C400r: Waiting for 53C80 registers\n"); | |
588 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) | |
589 | ; | |
590 | #endif | |
591 | if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) | |
592 | printk(KERN_ERR "53C400r: no end dma signal\n"); | |
593 | ||
1da177e4 LT |
594 | return 0; |
595 | } | |
596 | ||
597 | /** | |
598 | * NCR5380_write - pseudo DMA write | |
599 | * @instance: adapter to read from | |
600 | * @dst: buffer to read into | |
601 | * @len: buffer length | |
602 | * | |
25985edc | 603 | * Perform a pseudo DMA mode read from an NCR53C400 or equivalent |
1da177e4 LT |
604 | * controller |
605 | */ | |
606 | ||
607 | static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) | |
608 | { | |
54d8fe44 FT |
609 | #ifdef SCSI_G_NCR5380_MEM |
610 | struct NCR5380_hostdata *hostdata = shost_priv(instance); | |
611 | #endif | |
1da177e4 LT |
612 | int blocks = len / 128; |
613 | int start = 0; | |
614 | int bl; | |
615 | int i; | |
616 | ||
1da177e4 LT |
617 | NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); |
618 | NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); | |
619 | while (1) { | |
620 | if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { | |
621 | printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); | |
622 | return -1; | |
623 | } | |
624 | ||
625 | if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { | |
626 | break; | |
627 | } | |
628 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) | |
629 | ; // FIXME - timeout | |
702a98c6 | 630 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
631 | { |
632 | for (i = 0; i < 128; i++) | |
633 | NCR5380_write(C400_HOST_BUFFER, src[start + i]); | |
634 | } | |
635 | #else | |
702a98c6 | 636 | /* implies SCSI_G_NCR5380_MEM */ |
54d8fe44 FT |
637 | memcpy_toio(hostdata->iomem + NCR53C400_host_buffer, |
638 | src + start, 128); | |
1da177e4 LT |
639 | #endif |
640 | start += 128; | |
641 | blocks--; | |
642 | } | |
643 | if (blocks) { | |
644 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) | |
645 | ; // FIXME - no timeout | |
646 | ||
702a98c6 | 647 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
648 | { |
649 | for (i = 0; i < 128; i++) | |
650 | NCR5380_write(C400_HOST_BUFFER, src[start + i]); | |
651 | } | |
652 | #else | |
702a98c6 | 653 | /* implies SCSI_G_NCR5380_MEM */ |
54d8fe44 FT |
654 | memcpy_toio(hostdata->iomem + NCR53C400_host_buffer, |
655 | src + start, 128); | |
1da177e4 LT |
656 | #endif |
657 | start += 128; | |
658 | blocks--; | |
659 | } | |
660 | ||
661 | #if 0 | |
662 | printk("53C400w: waiting for registers to be available\n"); | |
663 | THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); | |
664 | printk("53C400w: Got em\n"); | |
665 | #endif | |
666 | ||
667 | /* Let's wait for this instead - could be ugly */ | |
668 | /* All documentation says to check for this. Maybe my hardware is too | |
669 | * fast. Waiting for it seems to work fine! KLL | |
670 | */ | |
671 | while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) | |
672 | ; // FIXME - no timeout | |
673 | ||
674 | /* | |
675 | * I know. i is certainly != 0 here but the loop is new. See previous | |
676 | * comment. | |
677 | */ | |
678 | if (i) { | |
679 | if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) | |
680 | printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); | |
681 | } else | |
682 | printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); | |
683 | ||
684 | #if 0 | |
685 | if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { | |
686 | printk(KERN_ERR "53C400w: no end dma signal\n"); | |
687 | } | |
688 | #endif | |
689 | while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) | |
690 | ; // TIMEOUT | |
691 | return 0; | |
692 | } | |
ff3d4578 FT |
693 | |
694 | static int generic_NCR5380_dma_xfer_len(struct scsi_cmnd *cmd) | |
695 | { | |
696 | int transfersize = cmd->transfersize; | |
697 | ||
698 | /* Limit transfers to 32K, for xx400 & xx406 | |
699 | * pseudoDMA that transfers in 128 bytes blocks. | |
700 | */ | |
701 | if (transfersize > 32 * 1024 && cmd->SCp.this_residual && | |
702 | !(cmd->SCp.this_residual % transfersize)) | |
703 | transfersize = 32 * 1024; | |
704 | ||
705 | return transfersize; | |
706 | } | |
707 | ||
4d8c08c7 | 708 | #endif /* PSEUDO_DMA */ |
1da177e4 LT |
709 | |
710 | /* | |
711 | * Include the NCR5380 core code that we build our driver around | |
712 | */ | |
713 | ||
714 | #include "NCR5380.c" | |
715 | ||
d0be4a7d | 716 | static struct scsi_host_template driver_template = { |
aa2e2cb1 | 717 | .proc_name = DRV_MODULE_NAME, |
aa2e2cb1 FT |
718 | .name = "Generic NCR5380/NCR53C400 SCSI", |
719 | .detect = generic_NCR5380_detect, | |
720 | .release = generic_NCR5380_release_resources, | |
721 | .info = generic_NCR5380_info, | |
722 | .queuecommand = generic_NCR5380_queue_command, | |
1da177e4 LT |
723 | .eh_abort_handler = generic_NCR5380_abort, |
724 | .eh_bus_reset_handler = generic_NCR5380_bus_reset, | |
aa2e2cb1 FT |
725 | .bios_param = NCR5380_BIOSPARAM, |
726 | .can_queue = 16, | |
727 | .this_id = 7, | |
728 | .sg_tablesize = SG_ALL, | |
729 | .cmd_per_lun = 2, | |
730 | .use_clustering = DISABLE_CLUSTERING, | |
32b26a10 | 731 | .cmd_size = NCR5380_CMD_SIZE, |
1da177e4 | 732 | }; |
161c0059 | 733 | |
1da177e4 LT |
734 | #include "scsi_module.c" |
735 | ||
736 | module_param(ncr_irq, int, 0); | |
737 | module_param(ncr_dma, int, 0); | |
738 | module_param(ncr_addr, int, 0); | |
739 | module_param(ncr_5380, int, 0); | |
740 | module_param(ncr_53c400, int, 0); | |
741 | module_param(ncr_53c400a, int, 0); | |
742 | module_param(dtc_3181e, int, 0); | |
743 | MODULE_LICENSE("GPL"); | |
744 | ||
b026e8ed | 745 | #if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE) |
6f039790 | 746 | static struct isapnp_device_id id_table[] = { |
1da177e4 LT |
747 | { |
748 | ISAPNP_ANY_ID, ISAPNP_ANY_ID, | |
749 | ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), | |
750 | 0}, | |
751 | {0} | |
752 | }; | |
753 | ||
754 | MODULE_DEVICE_TABLE(isapnp, id_table); | |
702a98c6 | 755 | #endif |
1da177e4 LT |
756 | |
757 | __setup("ncr5380=", do_NCR5380_setup); | |
758 | __setup("ncr53c400=", do_NCR53C400_setup); | |
759 | __setup("ncr53c400a=", do_NCR53C400A_setup); | |
760 | __setup("dtc3181e=", do_DTC3181E_setup); |