blob: 4615fda60dbdf6477ff28566740f59f6f51975ea [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#define PSEUDO_DMA
2
3/*
4 * Trantor T128/T128F/T228 driver
5 * Note : architecturally, the T100 and T130 are different and won't
6 * work
7 *
8 * Copyright 1993, Drew Eckhardt
9 * Visionary Computing
10 * (Unix and Linux consulting and custom programming)
11 * drew@colorado.edu
12 * +1 (303) 440-4894
13 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 * For more information, please consult
15 *
16 * Trantor Systems, Ltd.
17 * T128/T128F/T228 SCSI Host Adapter
18 * Hardware Specifications
19 *
20 * Trantor Systems, Ltd.
21 * 5415 Randall Place
22 * Fremont, CA 94538
23 * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 */
25
26/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070027 * The card is detected and initialized in one of several ways :
28 * 1. Autoprobe (default) - since the board is memory mapped,
29 * a BIOS signature is scanned for to locate the registers.
30 * An interrupt is triggered to autoprobe for the interrupt
31 * line.
32 *
33 * 2. With command line overrides - t128=address,irq may be
34 * used on the LILO command line to override the defaults.
35 *
36 * 3. With the T128_OVERRIDE compile time define. This is
37 * specified as an array of address, irq tuples. Ie, for
38 * one board at the default 0xcc000 address, IRQ5, I could say
39 * -DT128_OVERRIDE={{0xcc000, 5}}
40 *
41 * Note that if the override methods are used, place holders must
42 * be specified for other boards in the system.
43 *
44 * T128/T128F jumper/dipswitch settings (note : on my sample, the switches
45 * were epoxy'd shut, meaning I couldn't change the 0xcc000 base address) :
46 *
47 * T128 Sw7 Sw8 Sw6 = 0ws Sw5 = boot
48 * T128F Sw6 Sw7 Sw5 = 0ws Sw4 = boot Sw8 = floppy disable
49 * cc000 off off
50 * c8000 off on
51 * dc000 on off
52 * d8000 on on
53 *
54 *
55 * Interrupts
56 * There is a 12 pin jumper block, jp1, numbered as follows :
57 * T128 (JP1) T128F (J5)
58 * 2 4 6 8 10 12 11 9 7 5 3 1
59 * 1 3 5 7 9 11 12 10 8 6 4 2
60 *
61 * 3 2-4
62 * 5 1-3
63 * 7 3-5
64 * T128F only
65 * 10 8-10
66 * 12 7-9
67 * 14 10-12
68 * 15 9-11
69 */
70
Matthew Wilcox53d5ed62006-10-11 01:22:01 -070071#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070072#include <linux/blkdev.h>
73#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070074#include <linux/init.h>
75#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Linus Torvalds1da177e2005-04-16 15:20:36 -070077#include <scsi/scsi_host.h>
78#include "t128.h"
79#define AUTOPROBE_IRQ
80#include "NCR5380.h"
81
82static struct override {
83 unsigned long address;
84 int irq;
Tobias Klauser6391a112006-06-08 22:23:48 -070085} overrides
Linus Torvalds1da177e2005-04-16 15:20:36 -070086#ifdef T128_OVERRIDE
87 [] __initdata = T128_OVERRIDE;
88#else
Tobias Klauser6391a112006-06-08 22:23:48 -070089 [4] __initdata = {{0, IRQ_AUTO}, {0, IRQ_AUTO},
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 {0 ,IRQ_AUTO}, {0, IRQ_AUTO}};
91#endif
92
Tobias Klauser6391a112006-06-08 22:23:48 -070093#define NO_OVERRIDES ARRAY_SIZE(overrides)
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95static struct base {
96 unsigned int address;
97 int noauto;
98} bases[] __initdata = {
99 { 0xcc000, 0}, { 0xc8000, 0}, { 0xdc000, 0}, { 0xd8000, 0}
100};
101
Tobias Klauser6391a112006-06-08 22:23:48 -0700102#define NO_BASES ARRAY_SIZE(bases)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
104static struct signature {
105 const char *string;
106 int offset;
107} signatures[] __initdata = {
108{"TSROM: SCSI BIOS, Version 1.12", 0x36},
109};
110
Tobias Klauser6391a112006-06-08 22:23:48 -0700111#define NO_SIGNATURES ARRAY_SIZE(signatures)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112
Finn Thain925e4612014-11-12 16:11:49 +1100113#ifndef MODULE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114/*
115 * Function : t128_setup(char *str, int *ints)
116 *
117 * Purpose : LILO command line initialization of the overrides array,
118 *
119 * Inputs : str - unused, ints - array of integer parameters with ints[0]
120 * equal to the number of ints.
121 *
122 */
123
Finn Thain925e4612014-11-12 16:11:49 +1100124static int __init t128_setup(char *str)
125{
Finn Thaind5f7e652016-01-03 16:05:03 +1100126 static int commandline_current;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 int i;
Finn Thain925e4612014-11-12 16:11:49 +1100128 int ints[10];
129
130 get_options(str, ARRAY_SIZE(ints), ints);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 if (ints[0] != 2)
132 printk("t128_setup : usage t128=address,irq\n");
133 else
134 if (commandline_current < NO_OVERRIDES) {
135 overrides[commandline_current].address = ints[1];
136 overrides[commandline_current].irq = ints[2];
137 for (i = 0; i < NO_BASES; ++i)
138 if (bases[i].address == ints[1]) {
139 bases[i].noauto = 1;
140 break;
141 }
142 ++commandline_current;
143 }
Finn Thain925e4612014-11-12 16:11:49 +1100144 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145}
146
Finn Thain925e4612014-11-12 16:11:49 +1100147__setup("t128=", t128_setup);
148#endif
149
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150/*
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100151 * Function : int t128_detect(struct scsi_host_template * tpnt)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 *
153 * Purpose : detects and initializes T128,T128F, or T228 controllers
154 * that were autoprobed, overridden on the LILO command line,
155 * or specified at compile time.
156 *
157 * Inputs : tpnt - template for this SCSI adapter.
158 *
159 * Returns : 1 if a host adapter was found, 0 if not.
160 *
161 */
162
Finn Thained8b9e72014-11-12 16:11:51 +1100163static int __init t128_detect(struct scsi_host_template *tpnt)
164{
Finn Thaind5f7e652016-01-03 16:05:03 +1100165 static int current_override, current_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 struct Scsi_Host *instance;
167 unsigned long base;
168 void __iomem *p;
169 int sig, count;
170
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
172 base = 0;
173 p = NULL;
174
175 if (overrides[current_override].address) {
176 base = overrides[current_override].address;
177 p = ioremap(bases[current_base].address, 0x2000);
178 if (!p)
179 base = 0;
180 } else
181 for (; !base && (current_base < NO_BASES); ++current_base) {
Finn Thain2f7dba92016-01-03 16:05:04 +1100182 dprintk(NDEBUG_INIT, "t128: probing address 0x%08x\n",
183 bases[current_base].address);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 if (bases[current_base].noauto)
185 continue;
186 p = ioremap(bases[current_base].address, 0x2000);
187 if (!p)
188 continue;
189 for (sig = 0; sig < NO_SIGNATURES; ++sig)
190 if (check_signature(p + signatures[sig].offset,
191 signatures[sig].string,
192 strlen(signatures[sig].string))) {
193 base = bases[current_base].address;
Finn Thain2f7dba92016-01-03 16:05:04 +1100194 dprintk(NDEBUG_INIT, "t128: detected board\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 goto found;
196 }
197 iounmap(p);
198 }
199
Finn Thain2f7dba92016-01-03 16:05:04 +1100200 dprintk(NDEBUG_INIT, "t128: base = 0x%08x\n", (unsigned int)base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
202 if (!base)
203 break;
204
205found:
206 instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
207 if(instance == NULL)
Finn Thain0ad0eff2016-01-03 16:05:21 +1100208 goto out_unmap;
209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 instance->base = base;
211 ((struct NCR5380_hostdata *)instance->hostdata)->base = p;
212
Finn Thain0ad0eff2016-01-03 16:05:21 +1100213 if (NCR5380_init(instance, 0))
214 goto out_unregister;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
Finn Thainb6488f92016-01-03 16:05:08 +1100216 NCR5380_maybe_reset_bus(instance);
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 if (overrides[current_override].irq != IRQ_AUTO)
219 instance->irq = overrides[current_override].irq;
220 else
221 instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
222
Finn Thain22f5f102014-11-12 16:11:56 +1100223 /* Compatibility with documented NCR5380 kernel parameters */
224 if (instance->irq == 255)
225 instance->irq = NO_IRQ;
226
227 if (instance->irq != NO_IRQ)
Michael Opdenacker4909cc22014-03-05 06:09:41 +0100228 if (request_irq(instance->irq, t128_intr, 0, "t128",
Jeff Garzik1e641662007-11-11 19:52:05 -0500229 instance)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 printk("scsi%d : IRQ%d not free, interrupts disabled\n",
231 instance->host_no, instance->irq);
Finn Thain22f5f102014-11-12 16:11:56 +1100232 instance->irq = NO_IRQ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 }
234
Finn Thain22f5f102014-11-12 16:11:56 +1100235 if (instance->irq == NO_IRQ) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
237 printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
238 }
239
Finn Thain2f7dba92016-01-03 16:05:04 +1100240 dprintk(NDEBUG_INIT, "scsi%d: irq = %d\n",
241 instance->host_no, instance->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 ++current_override;
244 ++count;
245 }
246 return count;
Finn Thain0ad0eff2016-01-03 16:05:21 +1100247
248out_unregister:
249 scsi_unregister(instance);
250out_unmap:
251 iounmap(p);
252 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253}
254
255static int t128_release(struct Scsi_Host *shost)
256{
Finn Thain54d8fe42016-01-03 16:05:06 +1100257 struct NCR5380_hostdata *hostdata = shost_priv(shost);
258
Finn Thain22f5f102014-11-12 16:11:56 +1100259 if (shost->irq != NO_IRQ)
Jeff Garzik1e641662007-11-11 19:52:05 -0500260 free_irq(shost->irq, shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 NCR5380_exit(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 scsi_unregister(shost);
Finn Thain54d8fe42016-01-03 16:05:06 +1100263 iounmap(hostdata->base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 return 0;
265}
266
267/*
268 * Function : int t128_biosparam(Disk * disk, struct block_device *dev, int *ip)
269 *
270 * Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
271 * the specified device / size.
272 *
273 * Inputs : size = size of device in sectors (512 bytes), dev = block device
274 * major / minor, ip[] = {heads, sectors, cylinders}
275 *
276 * Returns : always 0 (success), initializes ip
277 *
278 */
279
280/*
281 * XXX Most SCSI boards use this mapping, I could be incorrect. Some one
282 * using hard disks on a trantor should verify that this mapping corresponds
283 * to that used by the BIOS / ASPI driver by running the linux fdisk program
284 * and matching the H_C_S coordinates to what DOS uses.
285 */
286
Finn Thained8b9e72014-11-12 16:11:51 +1100287static int t128_biosparam(struct scsi_device *sdev, struct block_device *bdev,
288 sector_t capacity, int *ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289{
290 ip[0] = 64;
291 ip[1] = 32;
292 ip[2] = capacity >> 11;
293 return 0;
294}
295
296/*
297 * Function : int NCR5380_pread (struct Scsi_Host *instance,
298 * unsigned char *dst, int len)
299 *
300 * Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
301 * dst
302 *
303 * Inputs : dst = destination, len = length in bytes
304 *
305 * Returns : 0 on success, non zero on a failure such as a watchdog
306 * timeout.
307 */
308
Finn Thain54d8fe42016-01-03 16:05:06 +1100309static inline int
310NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
311{
312 struct NCR5380_hostdata *hostdata = shost_priv(instance);
313 void __iomem *reg, *base = hostdata->base;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 unsigned char *d = dst;
315 register int i = len;
316
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 reg = base + T_DATA_REG_OFFSET;
318
319#if 0
320 for (; i; --i) {
321 while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
322#else
323 while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
324 for (; i; --i) {
325#endif
326 *d++ = readb(reg);
327 }
328
329 if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
330 unsigned char tmp;
331 void __iomem *foo = base + T_CONTROL_REG_OFFSET;
332 tmp = readb(foo);
333 writeb(tmp | T_CR_CT, foo);
334 writeb(tmp, foo);
335 printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
336 instance->host_no);
337 return -1;
338 } else
339 return 0;
340}
341
342/*
343 * Function : int NCR5380_pwrite (struct Scsi_Host *instance,
344 * unsigned char *src, int len)
345 *
346 * Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
347 * src
348 *
349 * Inputs : src = source, len = length in bytes
350 *
351 * Returns : 0 on success, non zero on a failure such as a watchdog
352 * timeout.
353 */
354
Finn Thain54d8fe42016-01-03 16:05:06 +1100355static inline int
356NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
357{
358 struct NCR5380_hostdata *hostdata = shost_priv(instance);
359 void __iomem *reg, *base = hostdata->base;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 unsigned char *s = src;
361 register int i = len;
362
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 reg = base + T_DATA_REG_OFFSET;
364
365#if 0
366 for (; i; --i) {
367 while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
368#else
369 while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
370 for (; i; --i) {
371#endif
372 writeb(*s++, reg);
373 }
374
375 if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
376 unsigned char tmp;
377 void __iomem *foo = base + T_CONTROL_REG_OFFSET;
378 tmp = readb(foo);
379 writeb(tmp | T_CR_CT, foo);
380 writeb(tmp, foo);
381 printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
382 instance->host_no);
383 return -1;
384 } else
385 return 0;
386}
387
388MODULE_LICENSE("GPL");
389
390#include "NCR5380.c"
391
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100392static struct scsi_host_template driver_template = {
Finn Thainaa2e2cb2016-01-03 16:05:48 +1100393 .name = "Trantor T128/T128F/T228",
394 .detect = t128_detect,
395 .release = t128_release,
396 .proc_name = "t128",
397 .show_info = t128_show_info,
398 .write_info = t128_write_info,
399 .info = t128_info,
400 .queuecommand = t128_queue_command,
401 .eh_abort_handler = t128_abort,
402 .eh_bus_reset_handler = t128_bus_reset,
403 .bios_param = t128_biosparam,
404 .can_queue = 32,
405 .this_id = 7,
406 .sg_tablesize = SG_ALL,
407 .cmd_per_lun = 2,
408 .use_clustering = DISABLE_CLUSTERING,
Finn Thain32b26a12016-01-03 16:05:58 +1100409 .cmd_size = NCR5380_CMD_SIZE,
Finn Thain0a4e3612016-01-03 16:06:07 +1100410 .max_sectors = 128,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411};
412#include "scsi_module.c"