1 |
199 |
simons |
/*
|
2 |
|
|
* ultrastor.c Copyright (C) 1992 David B. Gentzel
|
3 |
|
|
* Low-level SCSI driver for UltraStor 14F, 24F, and 34F
|
4 |
|
|
* by David B. Gentzel, Whitfield Software Services, Carnegie, PA
|
5 |
|
|
* (gentzel@nova.enet.dec.com)
|
6 |
|
|
* scatter/gather added by Scott Taylor (n217cg@tamuts.tamu.edu)
|
7 |
|
|
* 24F and multiple command support by John F. Carr (jfc@athena.mit.edu)
|
8 |
|
|
* John's work modified by Caleb Epstein (cae@jpmorgan.com) and
|
9 |
|
|
* Eric Youngdale (ericy@cais.com).
|
10 |
|
|
* Thanks to UltraStor for providing the necessary documentation
|
11 |
|
|
*/
|
12 |
|
|
|
13 |
|
|
/*
|
14 |
|
|
* TODO:
|
15 |
|
|
* 1. Find out why scatter/gather is limited to 16 requests per command.
|
16 |
|
|
* This is fixed, at least on the 24F, as of version 1.12 - CAE.
|
17 |
|
|
* 2. Look at command linking (mscp.command_link and
|
18 |
|
|
* mscp.command_link_id). (Does not work with many disks,
|
19 |
|
|
* and no performance increase. ERY).
|
20 |
|
|
* 3. Allow multiple adapters.
|
21 |
|
|
*/
|
22 |
|
|
|
23 |
|
|
/*
|
24 |
|
|
* NOTES:
|
25 |
|
|
* The UltraStor 14F, 24F, and 34F are a family of intelligent, high
|
26 |
|
|
* performance SCSI-2 host adapters. They all support command queueing
|
27 |
|
|
* and scatter/gather I/O. Some of them can also emulate the standard
|
28 |
|
|
* WD1003 interface for use with OS's which don't support SCSI. Here
|
29 |
|
|
* is the scoop on the various models:
|
30 |
|
|
* 14F - ISA first-party DMA HA with floppy support and WD1003 emulation.
|
31 |
|
|
* 14N - ISA HA with floppy support. I think that this is a non-DMA
|
32 |
|
|
* HA. Nothing further known.
|
33 |
|
|
* 24F - EISA Bus Master HA with floppy support and WD1003 emulation.
|
34 |
|
|
* 34F - VL-Bus Bus Master HA with floppy support (no WD1003 emulation).
|
35 |
|
|
*
|
36 |
|
|
* The 14F, 24F, and 34F are supported by this driver.
|
37 |
|
|
*
|
38 |
|
|
* Places flagged with a triple question-mark are things which are either
|
39 |
|
|
* unfinished, questionable, or wrong.
|
40 |
|
|
*/
|
41 |
|
|
|
42 |
|
|
/* Changes from version 1.11 alpha to 1.12
|
43 |
|
|
*
|
44 |
|
|
* Increased the size of the scatter-gather list to 33 entries for
|
45 |
|
|
* the 24F adapter (it was 16). I don't have the specs for the 14F
|
46 |
|
|
* or the 34F, so they may support larger s-g lists as well.
|
47 |
|
|
*
|
48 |
|
|
* Caleb Epstein <cae@jpmorgan.com>
|
49 |
|
|
*/
|
50 |
|
|
|
51 |
|
|
/* Changes from version 1.9 to 1.11
|
52 |
|
|
*
|
53 |
|
|
* Patches to bring this driver up to speed with the default kernel
|
54 |
|
|
* driver which supports only the 14F and 34F adapters. This version
|
55 |
|
|
* should compile cleanly into 0.99.13, 0.99.12 and probably 0.99.11.
|
56 |
|
|
*
|
57 |
|
|
* Fixes from Eric Youngdale to fix a few possible race conditions and
|
58 |
|
|
* several problems with bit testing operations (insufficient
|
59 |
|
|
* parentheses).
|
60 |
|
|
*
|
61 |
|
|
* Removed the ultrastor_abort() and ultrastor_reset() functions
|
62 |
|
|
* (enclosed them in #if 0 / #endif). These functions, at least on
|
63 |
|
|
* the 24F, cause the SCSI bus to do odd things and generally lead to
|
64 |
|
|
* kernel panics and machine hangs. This is like the Adaptec code.
|
65 |
|
|
*
|
66 |
|
|
* Use check/snarf_region for 14f, 34f to avoid I/O space address conflicts.
|
67 |
|
|
*/
|
68 |
|
|
|
69 |
|
|
/* Changes from version 1.8 to version 1.9
|
70 |
|
|
*
|
71 |
|
|
* 0.99.11 patches (cae@jpmorgan.com) */
|
72 |
|
|
|
73 |
|
|
/* Changes from version 1.7 to version 1.8
|
74 |
|
|
*
|
75 |
|
|
* Better error reporting.
|
76 |
|
|
*/
|
77 |
|
|
|
78 |
|
|
/* Changes from version 1.6 to version 1.7
|
79 |
|
|
*
|
80 |
|
|
* Removed CSIR command code.
|
81 |
|
|
*
|
82 |
|
|
* Better race condition avoidance (xchgb function added).
|
83 |
|
|
*
|
84 |
|
|
* Set ICM and OGM status to zero at probe (24F)
|
85 |
|
|
*
|
86 |
|
|
* reset sends soft reset to UltraStor adapter
|
87 |
|
|
*
|
88 |
|
|
* reset adapter if adapter interrupts with an invalid MSCP address
|
89 |
|
|
*
|
90 |
|
|
* handle aborted command interrupt (24F)
|
91 |
|
|
*
|
92 |
|
|
*/
|
93 |
|
|
|
94 |
|
|
/* Changes from version 1.5 to version 1.6:
|
95 |
|
|
*
|
96 |
|
|
* Read MSCP address from ICM _before_ clearing the interrupt flag.
|
97 |
|
|
* This fixes a race condition.
|
98 |
|
|
*/
|
99 |
|
|
|
100 |
|
|
/* Changes from version 1.4 to version 1.5:
|
101 |
|
|
*
|
102 |
|
|
* Abort now calls done when multiple commands are enabled.
|
103 |
|
|
*
|
104 |
|
|
* Clear busy when aborted command finishes, not when abort is called.
|
105 |
|
|
*
|
106 |
|
|
* More debugging messages for aborts.
|
107 |
|
|
*/
|
108 |
|
|
|
109 |
|
|
/* Changes from version 1.3 to version 1.4:
|
110 |
|
|
*
|
111 |
|
|
* Enable automatic request of sense data on error (requires newer version
|
112 |
|
|
* of scsi.c to be useful).
|
113 |
|
|
*
|
114 |
|
|
* Fix PORT_OVERRIDE for 14F.
|
115 |
|
|
*
|
116 |
|
|
* Fix abort and reset to work properly (config.aborted wasn't cleared
|
117 |
|
|
* after it was tested, so after a command abort no further commands would
|
118 |
|
|
* work).
|
119 |
|
|
*
|
120 |
|
|
* Boot time test to enable SCSI bus reset (defaults to not allowing reset).
|
121 |
|
|
*
|
122 |
|
|
* Fix test for OGM busy -- the busy bit is in different places on the 24F.
|
123 |
|
|
*
|
124 |
|
|
* Release ICM slot by clearing first byte on 24F.
|
125 |
|
|
*/
|
126 |
|
|
|
127 |
|
|
#ifdef MODULE
|
128 |
|
|
#include <linux/module.h>
|
129 |
|
|
#endif
|
130 |
|
|
|
131 |
|
|
#include <linux/stddef.h>
|
132 |
|
|
#include <linux/string.h>
|
133 |
|
|
#include <linux/sched.h>
|
134 |
|
|
#include <linux/kernel.h>
|
135 |
|
|
#include <linux/ioport.h>
|
136 |
|
|
#include <linux/proc_fs.h>
|
137 |
|
|
#include <asm/io.h>
|
138 |
|
|
#include <asm/bitops.h>
|
139 |
|
|
#include <asm/system.h>
|
140 |
|
|
#include <asm/dma.h>
|
141 |
|
|
|
142 |
|
|
#define ULTRASTOR_PRIVATE /* Get the private stuff from ultrastor.h */
|
143 |
|
|
#include <linux/blk.h>
|
144 |
|
|
#include "scsi.h"
|
145 |
|
|
#include "hosts.h"
|
146 |
|
|
#include "ultrastor.h"
|
147 |
|
|
#include "sd.h"
|
148 |
|
|
#include<linux/stat.h>
|
149 |
|
|
|
150 |
|
|
struct proc_dir_entry proc_scsi_ultrastor = {
|
151 |
|
|
PROC_SCSI_ULTRASTOR, 9, "ultrastor",
|
152 |
|
|
S_IFDIR | S_IRUGO | S_IXUGO, 2
|
153 |
|
|
};
|
154 |
|
|
|
155 |
|
|
#define FALSE 0
|
156 |
|
|
#define TRUE 1
|
157 |
|
|
|
158 |
|
|
#ifndef ULTRASTOR_DEBUG
|
159 |
|
|
#define ULTRASTOR_DEBUG (UD_ABORT|UD_CSIR|UD_RESET)
|
160 |
|
|
#endif
|
161 |
|
|
|
162 |
|
|
#define VERSION "1.12"
|
163 |
|
|
|
164 |
|
|
#define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr)[0])
|
165 |
|
|
|
166 |
|
|
#define PACKED __attribute__((packed))
|
167 |
|
|
#define ALIGNED(x) __attribute__((aligned(x)))
|
168 |
|
|
|
169 |
|
|
|
170 |
|
|
/* The 14F uses an array of 4-byte ints for its scatter/gather list.
|
171 |
|
|
The data can be unaligned, but need not be. It's easier to give
|
172 |
|
|
the list normal alignment since it doesn't need to fit into a
|
173 |
|
|
packed structure. */
|
174 |
|
|
|
175 |
|
|
typedef struct {
|
176 |
|
|
unsigned int address;
|
177 |
|
|
unsigned int num_bytes;
|
178 |
|
|
} ultrastor_sg_list;
|
179 |
|
|
|
180 |
|
|
|
181 |
|
|
/* MailBox SCSI Command Packet. Basic command structure for communicating
|
182 |
|
|
with controller. */
|
183 |
|
|
struct mscp {
|
184 |
|
|
unsigned char opcode: 3; /* type of command */
|
185 |
|
|
unsigned char xdir: 2; /* data transfer direction */
|
186 |
|
|
unsigned char dcn: 1; /* disable disconnect */
|
187 |
|
|
unsigned char ca: 1; /* use cache (if available) */
|
188 |
|
|
unsigned char sg: 1; /* scatter/gather operation */
|
189 |
|
|
unsigned char target_id: 3; /* target SCSI id */
|
190 |
|
|
unsigned char ch_no: 2; /* SCSI channel (always 0 for 14f) */
|
191 |
|
|
unsigned char lun: 3; /* logical unit number */
|
192 |
|
|
unsigned int transfer_data PACKED; /* transfer data pointer */
|
193 |
|
|
unsigned int transfer_data_length PACKED; /* length in bytes */
|
194 |
|
|
unsigned int command_link PACKED; /* for linking command chains */
|
195 |
|
|
unsigned char scsi_command_link_id; /* identifies command in chain */
|
196 |
|
|
unsigned char number_of_sg_list; /* (if sg is set) 8 bytes per list */
|
197 |
|
|
unsigned char length_of_sense_byte;
|
198 |
|
|
unsigned char length_of_scsi_cdbs; /* 6, 10, or 12 */
|
199 |
|
|
unsigned char scsi_cdbs[12]; /* SCSI commands */
|
200 |
|
|
unsigned char adapter_status; /* non-zero indicates HA error */
|
201 |
|
|
unsigned char target_status; /* non-zero indicates target error */
|
202 |
|
|
unsigned int sense_data PACKED;
|
203 |
|
|
/* The following fields are for software only. They are included in
|
204 |
|
|
the MSCP structure because they are associated with SCSI requests. */
|
205 |
|
|
void (*done)(Scsi_Cmnd *);
|
206 |
|
|
Scsi_Cmnd *SCint;
|
207 |
|
|
ultrastor_sg_list sglist[ULTRASTOR_24F_MAX_SG]; /* use larger size for 24F */
|
208 |
|
|
};
|
209 |
|
|
|
210 |
|
|
|
211 |
|
|
/* Port addresses (relative to the base address) */
|
212 |
|
|
#define U14F_PRODUCT_ID(port) ((port) + 0x4)
|
213 |
|
|
#define CONFIG(port) ((port) + 0x6)
|
214 |
|
|
|
215 |
|
|
/* Port addresses relative to the doorbell base address. */
|
216 |
|
|
#define LCL_DOORBELL_MASK(port) ((port) + 0x0)
|
217 |
|
|
#define LCL_DOORBELL_INTR(port) ((port) + 0x1)
|
218 |
|
|
#define SYS_DOORBELL_MASK(port) ((port) + 0x2)
|
219 |
|
|
#define SYS_DOORBELL_INTR(port) ((port) + 0x3)
|
220 |
|
|
|
221 |
|
|
|
222 |
|
|
/* Used to store configuration info read from config i/o registers. Most of
|
223 |
|
|
this is not used yet, but might as well save it.
|
224 |
|
|
|
225 |
|
|
This structure also holds port addresses that are not at the same offset
|
226 |
|
|
on the 14F and 24F.
|
227 |
|
|
|
228 |
|
|
This structure holds all data that must be duplicated to support multiple
|
229 |
|
|
adapters. */
|
230 |
|
|
|
231 |
|
|
static struct ultrastor_config
|
232 |
|
|
{
|
233 |
|
|
unsigned short port_address; /* base address of card */
|
234 |
|
|
unsigned short doorbell_address; /* base address of doorbell CSRs */
|
235 |
|
|
unsigned short ogm_address; /* base address of OGM */
|
236 |
|
|
unsigned short icm_address; /* base address of ICM */
|
237 |
|
|
const void *bios_segment;
|
238 |
|
|
unsigned char interrupt: 4;
|
239 |
|
|
unsigned char dma_channel: 3;
|
240 |
|
|
unsigned char bios_drive_number: 1;
|
241 |
|
|
unsigned char heads;
|
242 |
|
|
unsigned char sectors;
|
243 |
|
|
unsigned char ha_scsi_id: 3;
|
244 |
|
|
unsigned char subversion: 4;
|
245 |
|
|
unsigned char revision;
|
246 |
|
|
/* The slot number is used to distinguish the 24F (slot != 0) from
|
247 |
|
|
the 14F and 34F (slot == 0). */
|
248 |
|
|
unsigned char slot;
|
249 |
|
|
|
250 |
|
|
#ifdef PRINT_U24F_VERSION
|
251 |
|
|
volatile int csir_done;
|
252 |
|
|
#endif
|
253 |
|
|
|
254 |
|
|
/* A pool of MSCP structures for this adapter, and a bitmask of
|
255 |
|
|
busy structures. (If ULTRASTOR_14F_MAX_CMDS == 1, a 1 byte
|
256 |
|
|
busy flag is used instead.) */
|
257 |
|
|
|
258 |
|
|
#if ULTRASTOR_MAX_CMDS == 1
|
259 |
|
|
unsigned char mscp_busy;
|
260 |
|
|
#else
|
261 |
|
|
unsigned short mscp_free;
|
262 |
|
|
#endif
|
263 |
|
|
volatile unsigned char aborted[ULTRASTOR_MAX_CMDS];
|
264 |
|
|
struct mscp mscp[ULTRASTOR_MAX_CMDS];
|
265 |
|
|
} config = {0};
|
266 |
|
|
|
267 |
|
|
/* Set this to 1 to reset the SCSI bus on error. */
|
268 |
|
|
int ultrastor_bus_reset = 0;
|
269 |
|
|
|
270 |
|
|
|
271 |
|
|
/* Allowed BIOS base addresses (NULL indicates reserved) */
|
272 |
|
|
static const void *const bios_segment_table[8] = {
|
273 |
|
|
NULL, (void *)0xC4000, (void *)0xC8000, (void *)0xCC000,
|
274 |
|
|
(void *)0xD0000, (void *)0xD4000, (void *)0xD8000, (void *)0xDC000,
|
275 |
|
|
};
|
276 |
|
|
|
277 |
|
|
/* Allowed IRQs for 14f */
|
278 |
|
|
static const unsigned char interrupt_table_14f[4] = { 15, 14, 11, 10 };
|
279 |
|
|
|
280 |
|
|
/* Allowed DMA channels for 14f (0 indicates reserved) */
|
281 |
|
|
static const unsigned char dma_channel_table_14f[4] = { 5, 6, 7, 0 };
|
282 |
|
|
|
283 |
|
|
/* Head/sector mappings allowed by 14f */
|
284 |
|
|
static const struct {
|
285 |
|
|
unsigned char heads;
|
286 |
|
|
unsigned char sectors;
|
287 |
|
|
} mapping_table[4] = { { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 } };
|
288 |
|
|
|
289 |
|
|
#ifndef PORT_OVERRIDE
|
290 |
|
|
/* ??? A probe of address 0x310 screws up NE2000 cards */
|
291 |
|
|
static const unsigned short ultrastor_ports_14f[] = {
|
292 |
|
|
0x330, 0x340, /*0x310,*/ 0x230, 0x240, 0x210, 0x130, 0x140,
|
293 |
|
|
};
|
294 |
|
|
#endif
|
295 |
|
|
|
296 |
|
|
static void ultrastor_interrupt(int, void *, struct pt_regs *);
|
297 |
|
|
static inline void build_sg_list(struct mscp *, Scsi_Cmnd *SCpnt);
|
298 |
|
|
|
299 |
|
|
|
300 |
|
|
static inline int find_and_clear_bit_16(unsigned short *field)
|
301 |
|
|
{
|
302 |
|
|
int rv;
|
303 |
|
|
unsigned long flags;
|
304 |
|
|
|
305 |
|
|
save_flags(flags);
|
306 |
|
|
cli();
|
307 |
|
|
if (*field == 0) panic("No free mscp");
|
308 |
|
|
asm("xorl %0,%0\n0:\tbsfw %1,%w0\n\tbtr %0,%1\n\tjnc 0b"
|
309 |
|
|
: "=&r" (rv), "=m" (*field) : "1" (*field));
|
310 |
|
|
restore_flags(flags);
|
311 |
|
|
return rv;
|
312 |
|
|
}
|
313 |
|
|
|
314 |
|
|
/* This has been re-implemented with the help of Richard Earnshaw,
|
315 |
|
|
<rwe@pegasus.esprit.ec.org> and works with gcc-2.5.8 and gcc-2.6.0.
|
316 |
|
|
The instability noted by jfc below appears to be a bug in
|
317 |
|
|
gcc-2.5.x when compiling w/o optimization. --Caleb
|
318 |
|
|
|
319 |
|
|
This asm is fragile: it doesn't work without the casts and it may
|
320 |
|
|
not work without optimization. Maybe I should add a swap builtin
|
321 |
|
|
to gcc. --jfc */
|
322 |
|
|
static inline unsigned char xchgb(unsigned char reg,
|
323 |
|
|
volatile unsigned char *mem)
|
324 |
|
|
{
|
325 |
|
|
__asm__ ("xchgb %0,%1" : "=q" (reg), "=m" (*mem) : "0" (reg));
|
326 |
|
|
return reg;
|
327 |
|
|
}
|
328 |
|
|
|
329 |
|
|
#if ULTRASTOR_DEBUG & (UD_COMMAND | UD_ABORT)
|
330 |
|
|
|
331 |
|
|
static void log_ultrastor_abort(register struct ultrastor_config *config,
|
332 |
|
|
int command)
|
333 |
|
|
{
|
334 |
|
|
static char fmt[80] = "abort %d (%x); MSCP free pool: %x;";
|
335 |
|
|
register int i;
|
336 |
|
|
int flags;
|
337 |
|
|
save_flags(flags);
|
338 |
|
|
cli();
|
339 |
|
|
|
340 |
|
|
for (i = 0; i < ULTRASTOR_MAX_CMDS; i++)
|
341 |
|
|
{
|
342 |
|
|
fmt[20 + i*2] = ' ';
|
343 |
|
|
if (! (config->mscp_free & (1 << i)))
|
344 |
|
|
fmt[21 + i*2] = '0' + config->mscp[i].target_id;
|
345 |
|
|
else
|
346 |
|
|
fmt[21 + i*2] = '-';
|
347 |
|
|
}
|
348 |
|
|
fmt[20 + ULTRASTOR_MAX_CMDS * 2] = '\n';
|
349 |
|
|
fmt[21 + ULTRASTOR_MAX_CMDS * 2] = 0;
|
350 |
|
|
printk(fmt, command, &config->mscp[command], config->mscp_free);
|
351 |
|
|
restore_flags(flags);
|
352 |
|
|
}
|
353 |
|
|
#endif
|
354 |
|
|
|
355 |
|
|
static int ultrastor_14f_detect(Scsi_Host_Template * tpnt)
|
356 |
|
|
{
|
357 |
|
|
size_t i;
|
358 |
|
|
unsigned char in_byte, version_byte = 0;
|
359 |
|
|
struct config_1 {
|
360 |
|
|
unsigned char bios_segment: 3;
|
361 |
|
|
unsigned char removable_disks_as_fixed: 1;
|
362 |
|
|
unsigned char interrupt: 2;
|
363 |
|
|
unsigned char dma_channel: 2;
|
364 |
|
|
} config_1;
|
365 |
|
|
struct config_2 {
|
366 |
|
|
unsigned char ha_scsi_id: 3;
|
367 |
|
|
unsigned char mapping_mode: 2;
|
368 |
|
|
unsigned char bios_drive_number: 1;
|
369 |
|
|
unsigned char tfr_port: 2;
|
370 |
|
|
} config_2;
|
371 |
|
|
|
372 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
373 |
|
|
printk("US14F: detect: called\n");
|
374 |
|
|
#endif
|
375 |
|
|
|
376 |
|
|
/* If a 24F has already been configured, don't look for a 14F. */
|
377 |
|
|
if (config.bios_segment)
|
378 |
|
|
return FALSE;
|
379 |
|
|
|
380 |
|
|
#ifdef PORT_OVERRIDE
|
381 |
|
|
if(check_region(PORT_OVERRIDE, 0xc)) {
|
382 |
|
|
printk("Ultrastor I/O space already in use\n");
|
383 |
|
|
return FALSE;
|
384 |
|
|
};
|
385 |
|
|
config.port_address = PORT_OVERRIDE;
|
386 |
|
|
#else
|
387 |
|
|
for (i = 0; i < ARRAY_SIZE(ultrastor_ports_14f); i++) {
|
388 |
|
|
if(check_region(ultrastor_ports_14f[i], 0x0c)) continue;
|
389 |
|
|
config.port_address = ultrastor_ports_14f[i];
|
390 |
|
|
#endif
|
391 |
|
|
|
392 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
393 |
|
|
printk("US14F: detect: testing port address %03X\n", config.port_address);
|
394 |
|
|
#endif
|
395 |
|
|
|
396 |
|
|
in_byte = inb(U14F_PRODUCT_ID(config.port_address));
|
397 |
|
|
if (in_byte != US14F_PRODUCT_ID_0) {
|
398 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
399 |
|
|
# ifdef PORT_OVERRIDE
|
400 |
|
|
printk("US14F: detect: wrong product ID 0 - %02X\n", in_byte);
|
401 |
|
|
# else
|
402 |
|
|
printk("US14F: detect: no adapter at port %03X\n", config.port_address);
|
403 |
|
|
# endif
|
404 |
|
|
#endif
|
405 |
|
|
#ifdef PORT_OVERRIDE
|
406 |
|
|
return FALSE;
|
407 |
|
|
#else
|
408 |
|
|
continue;
|
409 |
|
|
#endif
|
410 |
|
|
}
|
411 |
|
|
in_byte = inb(U14F_PRODUCT_ID(config.port_address) + 1);
|
412 |
|
|
/* Only upper nibble is significant for Product ID 1 */
|
413 |
|
|
if ((in_byte & 0xF0) != US14F_PRODUCT_ID_1) {
|
414 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
415 |
|
|
# ifdef PORT_OVERRIDE
|
416 |
|
|
printk("US14F: detect: wrong product ID 1 - %02X\n", in_byte);
|
417 |
|
|
# else
|
418 |
|
|
printk("US14F: detect: no adapter at port %03X\n", config.port_address);
|
419 |
|
|
# endif
|
420 |
|
|
#endif
|
421 |
|
|
#ifdef PORT_OVERRIDE
|
422 |
|
|
return FALSE;
|
423 |
|
|
#else
|
424 |
|
|
continue;
|
425 |
|
|
#endif
|
426 |
|
|
}
|
427 |
|
|
version_byte = in_byte;
|
428 |
|
|
#ifndef PORT_OVERRIDE
|
429 |
|
|
break;
|
430 |
|
|
}
|
431 |
|
|
if (i == ARRAY_SIZE(ultrastor_ports_14f)) {
|
432 |
|
|
# if (ULTRASTOR_DEBUG & UD_DETECT)
|
433 |
|
|
printk("US14F: detect: no port address found!\n");
|
434 |
|
|
# endif
|
435 |
|
|
return FALSE;
|
436 |
|
|
}
|
437 |
|
|
#endif
|
438 |
|
|
|
439 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
440 |
|
|
printk("US14F: detect: adapter found at port address %03X\n",
|
441 |
|
|
config.port_address);
|
442 |
|
|
#endif
|
443 |
|
|
|
444 |
|
|
/* Set local doorbell mask to disallow bus reset unless
|
445 |
|
|
ultrastor_bus_reset is true. */
|
446 |
|
|
outb(ultrastor_bus_reset ? 0xc2 : 0x82, LCL_DOORBELL_MASK(config.port_address));
|
447 |
|
|
|
448 |
|
|
/* All above tests passed, must be the right thing. Get some useful
|
449 |
|
|
info. */
|
450 |
|
|
|
451 |
|
|
request_region(config.port_address, 0x0c,"ultrastor");
|
452 |
|
|
/* Register the I/O space that we use */
|
453 |
|
|
|
454 |
|
|
*(char *)&config_1 = inb(CONFIG(config.port_address + 0));
|
455 |
|
|
*(char *)&config_2 = inb(CONFIG(config.port_address + 1));
|
456 |
|
|
config.bios_segment = bios_segment_table[config_1.bios_segment];
|
457 |
|
|
config.doorbell_address = config.port_address;
|
458 |
|
|
config.ogm_address = config.port_address + 0x8;
|
459 |
|
|
config.icm_address = config.port_address + 0xC;
|
460 |
|
|
config.interrupt = interrupt_table_14f[config_1.interrupt];
|
461 |
|
|
config.ha_scsi_id = config_2.ha_scsi_id;
|
462 |
|
|
config.heads = mapping_table[config_2.mapping_mode].heads;
|
463 |
|
|
config.sectors = mapping_table[config_2.mapping_mode].sectors;
|
464 |
|
|
config.bios_drive_number = config_2.bios_drive_number;
|
465 |
|
|
config.subversion = (version_byte & 0x0F);
|
466 |
|
|
if (config.subversion == U34F)
|
467 |
|
|
config.dma_channel = 0;
|
468 |
|
|
else
|
469 |
|
|
config.dma_channel = dma_channel_table_14f[config_1.dma_channel];
|
470 |
|
|
|
471 |
|
|
if (!config.bios_segment) {
|
472 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
473 |
|
|
printk("US14F: detect: not detected.\n");
|
474 |
|
|
#endif
|
475 |
|
|
return FALSE;
|
476 |
|
|
}
|
477 |
|
|
|
478 |
|
|
/* Final consistency check, verify previous info. */
|
479 |
|
|
if (config.subversion != U34F)
|
480 |
|
|
if (!config.dma_channel || !(config_2.tfr_port & 0x2)) {
|
481 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
482 |
|
|
printk("US14F: detect: consistency check failed\n");
|
483 |
|
|
#endif
|
484 |
|
|
return FALSE;
|
485 |
|
|
}
|
486 |
|
|
|
487 |
|
|
/* If we were TRULY paranoid, we could issue a host adapter inquiry
|
488 |
|
|
command here and verify the data returned. But frankly, I'm
|
489 |
|
|
exhausted! */
|
490 |
|
|
|
491 |
|
|
/* Finally! Now I'm satisfied... */
|
492 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
493 |
|
|
printk("US14F: detect: detect succeeded\n"
|
494 |
|
|
" Port address: %03X\n"
|
495 |
|
|
" BIOS segment: %05X\n"
|
496 |
|
|
" Interrupt: %u\n"
|
497 |
|
|
" DMA channel: %u\n"
|
498 |
|
|
" H/A SCSI ID: %u\n"
|
499 |
|
|
" Subversion: %u\n",
|
500 |
|
|
config.port_address, config.bios_segment, config.interrupt,
|
501 |
|
|
config.dma_channel, config.ha_scsi_id, config.subversion);
|
502 |
|
|
#endif
|
503 |
|
|
tpnt->this_id = config.ha_scsi_id;
|
504 |
|
|
tpnt->unchecked_isa_dma = (config.subversion != U34F);
|
505 |
|
|
|
506 |
|
|
#if ULTRASTOR_MAX_CMDS > 1
|
507 |
|
|
config.mscp_free = ~0;
|
508 |
|
|
#endif
|
509 |
|
|
|
510 |
|
|
if (request_irq(config.interrupt, ultrastor_interrupt, 0, "Ultrastor", NULL)) {
|
511 |
|
|
printk("Unable to allocate IRQ%u for UltraStor controller.\n",
|
512 |
|
|
config.interrupt);
|
513 |
|
|
return FALSE;
|
514 |
|
|
}
|
515 |
|
|
if (config.dma_channel && request_dma(config.dma_channel,"Ultrastor")) {
|
516 |
|
|
printk("Unable to allocate DMA channel %u for UltraStor controller.\n",
|
517 |
|
|
config.dma_channel);
|
518 |
|
|
free_irq(config.interrupt, NULL);
|
519 |
|
|
return FALSE;
|
520 |
|
|
}
|
521 |
|
|
tpnt->sg_tablesize = ULTRASTOR_14F_MAX_SG;
|
522 |
|
|
printk("UltraStor driver version" VERSION ". Using %d SG lists.\n",
|
523 |
|
|
ULTRASTOR_14F_MAX_SG);
|
524 |
|
|
|
525 |
|
|
return TRUE;
|
526 |
|
|
}
|
527 |
|
|
|
528 |
|
|
static int ultrastor_24f_detect(Scsi_Host_Template * tpnt)
|
529 |
|
|
{
|
530 |
|
|
register int i;
|
531 |
|
|
struct Scsi_Host * shpnt = NULL;
|
532 |
|
|
|
533 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
534 |
|
|
printk("US24F: detect");
|
535 |
|
|
#endif
|
536 |
|
|
|
537 |
|
|
/* probe each EISA slot at slot address C80 */
|
538 |
|
|
for (i = 1; i < 15; i++)
|
539 |
|
|
{
|
540 |
|
|
unsigned char config_1, config_2;
|
541 |
|
|
unsigned short addr = (i << 12) | ULTRASTOR_24F_PORT;
|
542 |
|
|
|
543 |
|
|
if (inb(addr) != US24F_PRODUCT_ID_0 &&
|
544 |
|
|
inb(addr+1) != US24F_PRODUCT_ID_1 &&
|
545 |
|
|
inb(addr+2) != US24F_PRODUCT_ID_2)
|
546 |
|
|
continue;
|
547 |
|
|
|
548 |
|
|
config.revision = inb(addr+3);
|
549 |
|
|
config.slot = i;
|
550 |
|
|
if (! (inb(addr+4) & 1))
|
551 |
|
|
{
|
552 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
553 |
|
|
printk("U24F: found disabled card in slot %u\n", i);
|
554 |
|
|
#endif
|
555 |
|
|
continue;
|
556 |
|
|
}
|
557 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
558 |
|
|
printk("U24F: found card in slot %u\n", i);
|
559 |
|
|
#endif
|
560 |
|
|
config_1 = inb(addr + 5);
|
561 |
|
|
config.bios_segment = bios_segment_table[config_1 & 7];
|
562 |
|
|
switch(config_1 >> 4)
|
563 |
|
|
{
|
564 |
|
|
case 1:
|
565 |
|
|
config.interrupt = 15;
|
566 |
|
|
break;
|
567 |
|
|
case 2:
|
568 |
|
|
config.interrupt = 14;
|
569 |
|
|
break;
|
570 |
|
|
case 4:
|
571 |
|
|
config.interrupt = 11;
|
572 |
|
|
break;
|
573 |
|
|
case 8:
|
574 |
|
|
config.interrupt = 10;
|
575 |
|
|
break;
|
576 |
|
|
default:
|
577 |
|
|
printk("U24F: invalid IRQ\n");
|
578 |
|
|
return FALSE;
|
579 |
|
|
}
|
580 |
|
|
if (request_irq(config.interrupt, ultrastor_interrupt, 0, "Ultrastor", NULL))
|
581 |
|
|
{
|
582 |
|
|
printk("Unable to allocate IRQ%u for UltraStor controller.\n",
|
583 |
|
|
config.interrupt);
|
584 |
|
|
return FALSE;
|
585 |
|
|
}
|
586 |
|
|
/* BIOS addr set */
|
587 |
|
|
/* base port set */
|
588 |
|
|
config.port_address = addr;
|
589 |
|
|
config.doorbell_address = addr + 12;
|
590 |
|
|
config.ogm_address = addr + 0x17;
|
591 |
|
|
config.icm_address = addr + 0x1C;
|
592 |
|
|
config_2 = inb(addr + 7);
|
593 |
|
|
config.ha_scsi_id = config_2 & 7;
|
594 |
|
|
config.heads = mapping_table[(config_2 >> 3) & 3].heads;
|
595 |
|
|
config.sectors = mapping_table[(config_2 >> 3) & 3].sectors;
|
596 |
|
|
#if (ULTRASTOR_DEBUG & UD_DETECT)
|
597 |
|
|
printk("US24F: detect: detect succeeded\n"
|
598 |
|
|
" Port address: %03X\n"
|
599 |
|
|
" BIOS segment: %05X\n"
|
600 |
|
|
" Interrupt: %u\n"
|
601 |
|
|
" H/A SCSI ID: %u\n",
|
602 |
|
|
config.port_address, config.bios_segment,
|
603 |
|
|
config.interrupt, config.ha_scsi_id);
|
604 |
|
|
#endif
|
605 |
|
|
tpnt->this_id = config.ha_scsi_id;
|
606 |
|
|
tpnt->unchecked_isa_dma = 0;
|
607 |
|
|
tpnt->sg_tablesize = ULTRASTOR_24F_MAX_SG;
|
608 |
|
|
|
609 |
|
|
shpnt = scsi_register(tpnt, 0);
|
610 |
|
|
shpnt->irq = config.interrupt;
|
611 |
|
|
shpnt->dma_channel = config.dma_channel;
|
612 |
|
|
shpnt->io_port = config.port_address;
|
613 |
|
|
|
614 |
|
|
#if ULTRASTOR_MAX_CMDS > 1
|
615 |
|
|
config.mscp_free = ~0;
|
616 |
|
|
#endif
|
617 |
|
|
/* Mark ICM and OGM free */
|
618 |
|
|
outb(0, addr + 0x16);
|
619 |
|
|
outb(0, addr + 0x1B);
|
620 |
|
|
|
621 |
|
|
/* Set local doorbell mask to disallow bus reset unless
|
622 |
|
|
ultrastor_bus_reset is true. */
|
623 |
|
|
outb(ultrastor_bus_reset ? 0xc2 : 0x82, LCL_DOORBELL_MASK(addr+12));
|
624 |
|
|
outb(0x02, SYS_DOORBELL_MASK(addr+12));
|
625 |
|
|
printk("UltraStor driver version " VERSION ". Using %d SG lists.\n",
|
626 |
|
|
tpnt->sg_tablesize);
|
627 |
|
|
return TRUE;
|
628 |
|
|
}
|
629 |
|
|
return FALSE;
|
630 |
|
|
}
|
631 |
|
|
|
632 |
|
|
int ultrastor_detect(Scsi_Host_Template * tpnt)
|
633 |
|
|
{
|
634 |
|
|
tpnt->proc_dir = &proc_scsi_ultrastor;
|
635 |
|
|
return ultrastor_14f_detect(tpnt) || ultrastor_24f_detect(tpnt);
|
636 |
|
|
}
|
637 |
|
|
|
638 |
|
|
const char *ultrastor_info(struct Scsi_Host * shpnt)
|
639 |
|
|
{
|
640 |
|
|
static char buf[64];
|
641 |
|
|
|
642 |
|
|
if (config.slot)
|
643 |
|
|
sprintf(buf, "UltraStor 24F SCSI @ Slot %u IRQ%u",
|
644 |
|
|
config.slot, config.interrupt);
|
645 |
|
|
else if (config.subversion)
|
646 |
|
|
sprintf(buf, "UltraStor 34F SCSI @ Port %03X BIOS %05X IRQ%u",
|
647 |
|
|
config.port_address, (int)config.bios_segment,
|
648 |
|
|
config.interrupt);
|
649 |
|
|
else
|
650 |
|
|
sprintf(buf, "UltraStor 14F SCSI @ Port %03X BIOS %05X IRQ%u DMA%u",
|
651 |
|
|
config.port_address, (int)config.bios_segment,
|
652 |
|
|
config.interrupt, config.dma_channel);
|
653 |
|
|
return buf;
|
654 |
|
|
}
|
655 |
|
|
|
656 |
|
|
static inline void build_sg_list(register struct mscp *mscp, Scsi_Cmnd *SCpnt)
|
657 |
|
|
{
|
658 |
|
|
struct scatterlist *sl;
|
659 |
|
|
long transfer_length = 0;
|
660 |
|
|
int i, max;
|
661 |
|
|
|
662 |
|
|
sl = (struct scatterlist *) SCpnt->request_buffer;
|
663 |
|
|
max = SCpnt->use_sg;
|
664 |
|
|
for (i = 0; i < max; i++) {
|
665 |
|
|
mscp->sglist[i].address = (unsigned int)sl[i].address;
|
666 |
|
|
mscp->sglist[i].num_bytes = sl[i].length;
|
667 |
|
|
transfer_length += sl[i].length;
|
668 |
|
|
}
|
669 |
|
|
mscp->number_of_sg_list = max;
|
670 |
|
|
mscp->transfer_data = (unsigned int)mscp->sglist;
|
671 |
|
|
/* ??? May not be necessary. Docs are unclear as to whether transfer
|
672 |
|
|
length field is ignored or whether it should be set to the total
|
673 |
|
|
number of bytes of the transfer. */
|
674 |
|
|
mscp->transfer_data_length = transfer_length;
|
675 |
|
|
}
|
676 |
|
|
|
677 |
|
|
int ultrastor_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
|
678 |
|
|
{
|
679 |
|
|
register struct mscp *my_mscp;
|
680 |
|
|
#if ULTRASTOR_MAX_CMDS > 1
|
681 |
|
|
int mscp_index;
|
682 |
|
|
#endif
|
683 |
|
|
unsigned int status;
|
684 |
|
|
int flags;
|
685 |
|
|
|
686 |
|
|
/* Next test is for debugging; "can't happen" */
|
687 |
|
|
if ((config.mscp_free & ((1U << ULTRASTOR_MAX_CMDS) - 1)) == 0)
|
688 |
|
|
panic("ultrastor_queuecommand: no free MSCP\n");
|
689 |
|
|
mscp_index = find_and_clear_bit_16(&config.mscp_free);
|
690 |
|
|
|
691 |
|
|
/* Has the command been aborted? */
|
692 |
|
|
if (xchgb(0xff, &config.aborted[mscp_index]) != 0)
|
693 |
|
|
{
|
694 |
|
|
status = DID_ABORT << 16;
|
695 |
|
|
goto aborted;
|
696 |
|
|
}
|
697 |
|
|
|
698 |
|
|
my_mscp = &config.mscp[mscp_index];
|
699 |
|
|
|
700 |
|
|
#if 1
|
701 |
|
|
/* This way is faster. */
|
702 |
|
|
*(unsigned char *)my_mscp = OP_SCSI | (DTD_SCSI << 3);
|
703 |
|
|
#else
|
704 |
|
|
my_mscp->opcode = OP_SCSI;
|
705 |
|
|
my_mscp->xdir = DTD_SCSI;
|
706 |
|
|
my_mscp->dcn = FALSE;
|
707 |
|
|
#endif
|
708 |
|
|
/* Tape drives don't work properly if the cache is used. The SCSI
|
709 |
|
|
READ command for a tape doesn't have a block offset, and the adapter
|
710 |
|
|
incorrectly assumes that all reads from the tape read the same
|
711 |
|
|
blocks. Results will depend on read buffer size and other disk
|
712 |
|
|
activity.
|
713 |
|
|
|
714 |
|
|
??? Which other device types should never use the cache? */
|
715 |
|
|
my_mscp->ca = SCpnt->device->type != TYPE_TAPE;
|
716 |
|
|
my_mscp->target_id = SCpnt->target;
|
717 |
|
|
my_mscp->ch_no = 0;
|
718 |
|
|
my_mscp->lun = SCpnt->lun;
|
719 |
|
|
if (SCpnt->use_sg) {
|
720 |
|
|
/* Set scatter/gather flag in SCSI command packet */
|
721 |
|
|
my_mscp->sg = TRUE;
|
722 |
|
|
build_sg_list(my_mscp, SCpnt);
|
723 |
|
|
} else {
|
724 |
|
|
/* Unset scatter/gather flag in SCSI command packet */
|
725 |
|
|
my_mscp->sg = FALSE;
|
726 |
|
|
my_mscp->transfer_data = (unsigned int)SCpnt->request_buffer;
|
727 |
|
|
my_mscp->transfer_data_length = SCpnt->request_bufflen;
|
728 |
|
|
}
|
729 |
|
|
my_mscp->command_link = 0; /*???*/
|
730 |
|
|
my_mscp->scsi_command_link_id = 0; /*???*/
|
731 |
|
|
my_mscp->length_of_sense_byte = sizeof SCpnt->sense_buffer;
|
732 |
|
|
my_mscp->length_of_scsi_cdbs = SCpnt->cmd_len;
|
733 |
|
|
memcpy(my_mscp->scsi_cdbs, SCpnt->cmnd, my_mscp->length_of_scsi_cdbs);
|
734 |
|
|
my_mscp->adapter_status = 0;
|
735 |
|
|
my_mscp->target_status = 0;
|
736 |
|
|
my_mscp->sense_data = (unsigned int)&SCpnt->sense_buffer;
|
737 |
|
|
my_mscp->done = done;
|
738 |
|
|
my_mscp->SCint = SCpnt;
|
739 |
|
|
SCpnt->host_scribble = (unsigned char *)my_mscp;
|
740 |
|
|
|
741 |
|
|
/* Find free OGM slot. On 24F, look for OGM status byte == 0.
|
742 |
|
|
On 14F and 34F, wait for local interrupt pending flag to clear. */
|
743 |
|
|
|
744 |
|
|
retry:
|
745 |
|
|
if (config.slot)
|
746 |
|
|
while (inb(config.ogm_address - 1) != 0 &&
|
747 |
|
|
config.aborted[mscp_index] == 0xff) barrier();
|
748 |
|
|
|
749 |
|
|
/* else??? */
|
750 |
|
|
|
751 |
|
|
while ((inb(LCL_DOORBELL_INTR(config.doorbell_address)) &
|
752 |
|
|
(config.slot ? 2 : 1))
|
753 |
|
|
&& config.aborted[mscp_index] == 0xff) barrier();
|
754 |
|
|
|
755 |
|
|
/* To avoid race conditions, make the code to write to the adapter
|
756 |
|
|
atomic. This simplifies the abort code. */
|
757 |
|
|
|
758 |
|
|
save_flags(flags);
|
759 |
|
|
cli();
|
760 |
|
|
|
761 |
|
|
if (inb(LCL_DOORBELL_INTR(config.doorbell_address)) &
|
762 |
|
|
(config.slot ? 2 : 1))
|
763 |
|
|
{
|
764 |
|
|
restore_flags(flags);
|
765 |
|
|
goto retry;
|
766 |
|
|
}
|
767 |
|
|
|
768 |
|
|
status = xchgb(0, &config.aborted[mscp_index]);
|
769 |
|
|
if (status != 0xff) {
|
770 |
|
|
restore_flags(flags);
|
771 |
|
|
|
772 |
|
|
#if ULTRASTOR_DEBUG & (UD_COMMAND | UD_ABORT)
|
773 |
|
|
printk("USx4F: queuecommand: aborted\n");
|
774 |
|
|
#if ULTRASTOR_MAX_CMDS > 1
|
775 |
|
|
log_ultrastor_abort(&config, mscp_index);
|
776 |
|
|
#endif
|
777 |
|
|
#endif
|
778 |
|
|
status <<= 16;
|
779 |
|
|
|
780 |
|
|
aborted:
|
781 |
|
|
set_bit(mscp_index, &config.mscp_free);
|
782 |
|
|
/* If the driver queues commands, call the done proc here. Otherwise
|
783 |
|
|
return an error. */
|
784 |
|
|
#if ULTRASTOR_MAX_CMDS > 1
|
785 |
|
|
SCpnt->result = status;
|
786 |
|
|
done(SCpnt);
|
787 |
|
|
return 0;
|
788 |
|
|
#else
|
789 |
|
|
return status;
|
790 |
|
|
#endif
|
791 |
|
|
}
|
792 |
|
|
|
793 |
|
|
/* Store pointer in OGM address bytes */
|
794 |
|
|
outl((unsigned int)my_mscp, config.ogm_address);
|
795 |
|
|
|
796 |
|
|
/* Issue OGM interrupt */
|
797 |
|
|
if (config.slot) {
|
798 |
|
|
/* Write OGM command register on 24F */
|
799 |
|
|
outb(1, config.ogm_address - 1);
|
800 |
|
|
outb(0x2, LCL_DOORBELL_INTR(config.doorbell_address));
|
801 |
|
|
} else {
|
802 |
|
|
outb(0x1, LCL_DOORBELL_INTR(config.doorbell_address));
|
803 |
|
|
}
|
804 |
|
|
|
805 |
|
|
restore_flags(flags);
|
806 |
|
|
|
807 |
|
|
#if (ULTRASTOR_DEBUG & UD_COMMAND)
|
808 |
|
|
printk("USx4F: queuecommand: returning\n");
|
809 |
|
|
#endif
|
810 |
|
|
|
811 |
|
|
return 0;
|
812 |
|
|
}
|
813 |
|
|
|
814 |
|
|
/* This code must deal with 2 cases:
|
815 |
|
|
|
816 |
|
|
1. The command has not been written to the OGM. In this case, set
|
817 |
|
|
the abort flag and return.
|
818 |
|
|
|
819 |
|
|
2. The command has been written to the OGM and is stuck somewhere in
|
820 |
|
|
the adapter.
|
821 |
|
|
|
822 |
|
|
2a. On a 24F, ask the adapter to abort the command. It will interrupt
|
823 |
|
|
when it does.
|
824 |
|
|
|
825 |
|
|
2b. Call the command's done procedure.
|
826 |
|
|
|
827 |
|
|
*/
|
828 |
|
|
|
829 |
|
|
int ultrastor_abort(Scsi_Cmnd *SCpnt)
|
830 |
|
|
{
|
831 |
|
|
#if ULTRASTOR_DEBUG & UD_ABORT
|
832 |
|
|
char out[108];
|
833 |
|
|
unsigned char icm_status = 0, ogm_status = 0;
|
834 |
|
|
unsigned int icm_addr = 0, ogm_addr = 0;
|
835 |
|
|
#endif
|
836 |
|
|
unsigned int mscp_index;
|
837 |
|
|
unsigned char old_aborted;
|
838 |
|
|
void (*done)(Scsi_Cmnd *);
|
839 |
|
|
|
840 |
|
|
if(config.slot)
|
841 |
|
|
return SCSI_ABORT_SNOOZE; /* Do not attempt an abort for the 24f */
|
842 |
|
|
|
843 |
|
|
/* Simple consistency checking */
|
844 |
|
|
if(!SCpnt->host_scribble)
|
845 |
|
|
return SCSI_ABORT_NOT_RUNNING;
|
846 |
|
|
|
847 |
|
|
mscp_index = ((struct mscp *)SCpnt->host_scribble) - config.mscp;
|
848 |
|
|
if (mscp_index >= ULTRASTOR_MAX_CMDS)
|
849 |
|
|
panic("Ux4F aborting invalid MSCP");
|
850 |
|
|
|
851 |
|
|
#if ULTRASTOR_DEBUG & UD_ABORT
|
852 |
|
|
if (config.slot)
|
853 |
|
|
{
|
854 |
|
|
int port0 = (config.slot << 12) | 0xc80;
|
855 |
|
|
int i;
|
856 |
|
|
int flags;
|
857 |
|
|
save_flags(flags);
|
858 |
|
|
cli();
|
859 |
|
|
strcpy(out, "OGM %d:%x ICM %d:%x ports: ");
|
860 |
|
|
for (i = 0; i < 16; i++)
|
861 |
|
|
{
|
862 |
|
|
unsigned char p = inb(port0 + i);
|
863 |
|
|
out[28 + i * 3] = "0123456789abcdef"[p >> 4];
|
864 |
|
|
out[29 + i * 3] = "0123456789abcdef"[p & 15];
|
865 |
|
|
out[30 + i * 3] = ' ';
|
866 |
|
|
}
|
867 |
|
|
out[28 + i * 3] = '\n';
|
868 |
|
|
out[29 + i * 3] = 0;
|
869 |
|
|
ogm_status = inb(port0 + 22);
|
870 |
|
|
ogm_addr = inl(port0 + 23);
|
871 |
|
|
icm_status = inb(port0 + 27);
|
872 |
|
|
icm_addr = inl(port0 + 28);
|
873 |
|
|
restore_flags(flags);
|
874 |
|
|
}
|
875 |
|
|
|
876 |
|
|
/* First check to see if an interrupt is pending. I suspect the SiS
|
877 |
|
|
chipset loses interrupts. (I also suspect is mangles data, but
|
878 |
|
|
one bug at a time... */
|
879 |
|
|
if (config.slot ? inb(config.icm_address - 1) == 2 :
|
880 |
|
|
(inb(SYS_DOORBELL_INTR(config.doorbell_address)) & 1))
|
881 |
|
|
{
|
882 |
|
|
int flags;
|
883 |
|
|
save_flags(flags);
|
884 |
|
|
printk("Ux4F: abort while completed command pending\n");
|
885 |
|
|
restore_flags(flags);
|
886 |
|
|
cli();
|
887 |
|
|
ultrastor_interrupt(0, NULL, NULL);
|
888 |
|
|
restore_flags(flags);
|
889 |
|
|
return SCSI_ABORT_SUCCESS; /* FIXME - is this correct? -ERY */
|
890 |
|
|
}
|
891 |
|
|
#endif
|
892 |
|
|
|
893 |
|
|
old_aborted = xchgb(DID_ABORT, &config.aborted[mscp_index]);
|
894 |
|
|
|
895 |
|
|
/* aborted == 0xff is the signal that queuecommand has not yet sent
|
896 |
|
|
the command. It will notice the new abort flag and fail. */
|
897 |
|
|
if (old_aborted == 0xff)
|
898 |
|
|
return SCSI_ABORT_SUCCESS;
|
899 |
|
|
|
900 |
|
|
/* On 24F, send an abort MSCP request. The adapter will interrupt
|
901 |
|
|
and the interrupt handler will call done. */
|
902 |
|
|
if (config.slot && inb(config.ogm_address - 1) == 0)
|
903 |
|
|
{
|
904 |
|
|
int flags;
|
905 |
|
|
|
906 |
|
|
save_flags(flags);
|
907 |
|
|
cli();
|
908 |
|
|
outl((int)&config.mscp[mscp_index], config.ogm_address);
|
909 |
|
|
inb(0xc80); /* delay */
|
910 |
|
|
outb(0x80, config.ogm_address - 1);
|
911 |
|
|
outb(0x2, LCL_DOORBELL_INTR(config.doorbell_address));
|
912 |
|
|
#if ULTRASTOR_DEBUG & UD_ABORT
|
913 |
|
|
log_ultrastor_abort(&config, mscp_index);
|
914 |
|
|
printk(out, ogm_status, ogm_addr, icm_status, icm_addr);
|
915 |
|
|
#endif
|
916 |
|
|
restore_flags(flags);
|
917 |
|
|
return SCSI_ABORT_PENDING;
|
918 |
|
|
}
|
919 |
|
|
|
920 |
|
|
#if ULTRASTOR_DEBUG & UD_ABORT
|
921 |
|
|
log_ultrastor_abort(&config, mscp_index);
|
922 |
|
|
#endif
|
923 |
|
|
|
924 |
|
|
/* Can't request a graceful abort. Either this is not a 24F or
|
925 |
|
|
the OGM is busy. Don't free the command -- the adapter might
|
926 |
|
|
still be using it. Setting SCint = 0 causes the interrupt
|
927 |
|
|
handler to ignore the command. */
|
928 |
|
|
|
929 |
|
|
/* FIXME - devices that implement soft resets will still be running
|
930 |
|
|
the command after a bus reset. We would probably rather leave
|
931 |
|
|
the command in the queue. The upper level code will automatically
|
932 |
|
|
leave the command in the active state instead of requeueing it. ERY */
|
933 |
|
|
|
934 |
|
|
#if ULTRASTOR_DEBUG & UD_ABORT
|
935 |
|
|
if (config.mscp[mscp_index].SCint != SCpnt)
|
936 |
|
|
printk("abort: command mismatch, %p != %p\n",
|
937 |
|
|
config.mscp[mscp_index].SCint, SCpnt);
|
938 |
|
|
#endif
|
939 |
|
|
if (config.mscp[mscp_index].SCint == 0)
|
940 |
|
|
return SCSI_ABORT_NOT_RUNNING;
|
941 |
|
|
|
942 |
|
|
if (config.mscp[mscp_index].SCint != SCpnt) panic("Bad abort");
|
943 |
|
|
config.mscp[mscp_index].SCint = 0;
|
944 |
|
|
done = config.mscp[mscp_index].done;
|
945 |
|
|
config.mscp[mscp_index].done = 0;
|
946 |
|
|
SCpnt->result = DID_ABORT << 16;
|
947 |
|
|
/* I worry about reentrancy in scsi.c */
|
948 |
|
|
done(SCpnt);
|
949 |
|
|
|
950 |
|
|
/* Need to set a timeout here in case command never completes. */
|
951 |
|
|
return SCSI_ABORT_SUCCESS;
|
952 |
|
|
}
|
953 |
|
|
|
954 |
|
|
int ultrastor_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags)
|
955 |
|
|
{
|
956 |
|
|
int flags;
|
957 |
|
|
register int i;
|
958 |
|
|
#if (ULTRASTOR_DEBUG & UD_RESET)
|
959 |
|
|
printk("US14F: reset: called\n");
|
960 |
|
|
#endif
|
961 |
|
|
|
962 |
|
|
if(config.slot)
|
963 |
|
|
return SCSI_RESET_PUNT; /* Do not attempt a reset for the 24f */
|
964 |
|
|
|
965 |
|
|
save_flags(flags);
|
966 |
|
|
cli();
|
967 |
|
|
|
968 |
|
|
/* Reset the adapter and SCSI bus. The SCSI bus reset can be
|
969 |
|
|
inhibited by clearing ultrastor_bus_reset before probe. */
|
970 |
|
|
outb(0xc0, LCL_DOORBELL_INTR(config.doorbell_address));
|
971 |
|
|
if (config.slot)
|
972 |
|
|
{
|
973 |
|
|
outb(0, config.ogm_address - 1);
|
974 |
|
|
outb(0, config.icm_address - 1);
|
975 |
|
|
}
|
976 |
|
|
|
977 |
|
|
#if ULTRASTOR_MAX_CMDS == 1
|
978 |
|
|
if (config.mscp_busy && config.mscp->done && config.mscp->SCint)
|
979 |
|
|
{
|
980 |
|
|
config.mscp->SCint->result = DID_RESET << 16;
|
981 |
|
|
config.mscp->done(config.mscp->SCint);
|
982 |
|
|
}
|
983 |
|
|
config.mscp->SCint = 0;
|
984 |
|
|
#else
|
985 |
|
|
for (i = 0; i < ULTRASTOR_MAX_CMDS; i++)
|
986 |
|
|
{
|
987 |
|
|
if (! (config.mscp_free & (1 << i)) &&
|
988 |
|
|
config.mscp[i].done && config.mscp[i].SCint)
|
989 |
|
|
{
|
990 |
|
|
config.mscp[i].SCint->result = DID_RESET << 16;
|
991 |
|
|
config.mscp[i].done(config.mscp[i].SCint);
|
992 |
|
|
config.mscp[i].done = 0;
|
993 |
|
|
}
|
994 |
|
|
config.mscp[i].SCint = 0;
|
995 |
|
|
}
|
996 |
|
|
#endif
|
997 |
|
|
|
998 |
|
|
/* FIXME - if the device implements soft resets, then the command
|
999 |
|
|
will still be running. ERY */
|
1000 |
|
|
|
1001 |
|
|
memset((unsigned char *)config.aborted, 0, sizeof config.aborted);
|
1002 |
|
|
#if ULTRASTOR_MAX_CMDS == 1
|
1003 |
|
|
config.mscp_busy = 0;
|
1004 |
|
|
#else
|
1005 |
|
|
config.mscp_free = ~0;
|
1006 |
|
|
#endif
|
1007 |
|
|
|
1008 |
|
|
restore_flags(flags);
|
1009 |
|
|
return SCSI_RESET_SUCCESS;
|
1010 |
|
|
|
1011 |
|
|
}
|
1012 |
|
|
|
1013 |
|
|
int ultrastor_biosparam(Disk * disk, kdev_t dev, int * dkinfo)
|
1014 |
|
|
{
|
1015 |
|
|
int size = disk->capacity;
|
1016 |
|
|
unsigned int s = config.heads * config.sectors;
|
1017 |
|
|
|
1018 |
|
|
dkinfo[0] = config.heads;
|
1019 |
|
|
dkinfo[1] = config.sectors;
|
1020 |
|
|
dkinfo[2] = size / s; /* Ignore partial cylinders */
|
1021 |
|
|
#if 0
|
1022 |
|
|
if (dkinfo[2] > 1024)
|
1023 |
|
|
dkinfo[2] = 1024;
|
1024 |
|
|
#endif
|
1025 |
|
|
return 0;
|
1026 |
|
|
}
|
1027 |
|
|
|
1028 |
|
|
static void ultrastor_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
1029 |
|
|
{
|
1030 |
|
|
unsigned int status;
|
1031 |
|
|
#if ULTRASTOR_MAX_CMDS > 1
|
1032 |
|
|
unsigned int mscp_index;
|
1033 |
|
|
#endif
|
1034 |
|
|
register struct mscp *mscp;
|
1035 |
|
|
void (*done)(Scsi_Cmnd *);
|
1036 |
|
|
Scsi_Cmnd *SCtmp;
|
1037 |
|
|
|
1038 |
|
|
#if ULTRASTOR_MAX_CMDS == 1
|
1039 |
|
|
mscp = &config.mscp[0];
|
1040 |
|
|
#else
|
1041 |
|
|
mscp = (struct mscp *)inl(config.icm_address);
|
1042 |
|
|
mscp_index = mscp - config.mscp;
|
1043 |
|
|
if (mscp_index >= ULTRASTOR_MAX_CMDS) {
|
1044 |
|
|
printk("Ux4F interrupt: bad MSCP address %x\n", (unsigned int) mscp);
|
1045 |
|
|
/* A command has been lost. Reset and report an error
|
1046 |
|
|
for all commands. */
|
1047 |
|
|
ultrastor_reset(NULL, 0);
|
1048 |
|
|
return;
|
1049 |
|
|
}
|
1050 |
|
|
#endif
|
1051 |
|
|
|
1052 |
|
|
/* Clean ICM slot (set ICMINT bit to 0) */
|
1053 |
|
|
if (config.slot) {
|
1054 |
|
|
unsigned char icm_status = inb(config.icm_address - 1);
|
1055 |
|
|
#if ULTRASTOR_DEBUG & (UD_INTERRUPT|UD_ERROR|UD_ABORT)
|
1056 |
|
|
if (icm_status != 1 && icm_status != 2)
|
1057 |
|
|
printk("US24F: ICM status %x for MSCP %d (%x)\n", icm_status,
|
1058 |
|
|
mscp_index, (unsigned int) mscp);
|
1059 |
|
|
#endif
|
1060 |
|
|
/* The manual says clear interrupt then write 0 to ICM status.
|
1061 |
|
|
This seems backwards, but I'll do it anyway. --jfc */
|
1062 |
|
|
outb(2, SYS_DOORBELL_INTR(config.doorbell_address));
|
1063 |
|
|
outb(0, config.icm_address - 1);
|
1064 |
|
|
if (icm_status == 4) {
|
1065 |
|
|
printk("UltraStor abort command failed\n");
|
1066 |
|
|
return;
|
1067 |
|
|
}
|
1068 |
|
|
if (icm_status == 3) {
|
1069 |
|
|
void (*done)(Scsi_Cmnd *) = mscp->done;
|
1070 |
|
|
if (done) {
|
1071 |
|
|
mscp->done = 0;
|
1072 |
|
|
mscp->SCint->result = DID_ABORT << 16;
|
1073 |
|
|
done(mscp->SCint);
|
1074 |
|
|
}
|
1075 |
|
|
return;
|
1076 |
|
|
}
|
1077 |
|
|
} else {
|
1078 |
|
|
outb(1, SYS_DOORBELL_INTR(config.doorbell_address));
|
1079 |
|
|
}
|
1080 |
|
|
|
1081 |
|
|
SCtmp = mscp->SCint;
|
1082 |
|
|
mscp->SCint = NULL;
|
1083 |
|
|
|
1084 |
|
|
if (SCtmp == 0)
|
1085 |
|
|
{
|
1086 |
|
|
#if ULTRASTOR_DEBUG & (UD_ABORT|UD_INTERRUPT)
|
1087 |
|
|
printk("MSCP %d (%x): no command\n", mscp_index, (unsigned int) mscp);
|
1088 |
|
|
#endif
|
1089 |
|
|
#if ULTRASTOR_MAX_CMDS == 1
|
1090 |
|
|
config.mscp_busy = FALSE;
|
1091 |
|
|
#else
|
1092 |
|
|
set_bit(mscp_index, &config.mscp_free);
|
1093 |
|
|
#endif
|
1094 |
|
|
config.aborted[mscp_index] = 0;
|
1095 |
|
|
return;
|
1096 |
|
|
}
|
1097 |
|
|
|
1098 |
|
|
/* Save done locally and zero before calling. This is needed as
|
1099 |
|
|
once we call done, we may get another command queued before this
|
1100 |
|
|
interrupt service routine can return. */
|
1101 |
|
|
done = mscp->done;
|
1102 |
|
|
mscp->done = 0;
|
1103 |
|
|
|
1104 |
|
|
/* Let the higher levels know that we're done */
|
1105 |
|
|
switch (mscp->adapter_status)
|
1106 |
|
|
{
|
1107 |
|
|
case 0:
|
1108 |
|
|
status = DID_OK << 16;
|
1109 |
|
|
break;
|
1110 |
|
|
case 0x01: /* invalid command */
|
1111 |
|
|
case 0x02: /* invalid parameters */
|
1112 |
|
|
case 0x03: /* invalid data list */
|
1113 |
|
|
default:
|
1114 |
|
|
status = DID_ERROR << 16;
|
1115 |
|
|
break;
|
1116 |
|
|
case 0x84: /* SCSI bus abort */
|
1117 |
|
|
status = DID_ABORT << 16;
|
1118 |
|
|
break;
|
1119 |
|
|
case 0x91:
|
1120 |
|
|
status = DID_TIME_OUT << 16;
|
1121 |
|
|
break;
|
1122 |
|
|
}
|
1123 |
|
|
|
1124 |
|
|
SCtmp->result = status | mscp->target_status;
|
1125 |
|
|
|
1126 |
|
|
SCtmp->host_scribble = 0;
|
1127 |
|
|
|
1128 |
|
|
/* Free up mscp block for next command */
|
1129 |
|
|
#if ULTRASTOR_MAX_CMDS == 1
|
1130 |
|
|
config.mscp_busy = FALSE;
|
1131 |
|
|
#else
|
1132 |
|
|
set_bit(mscp_index, &config.mscp_free);
|
1133 |
|
|
#endif
|
1134 |
|
|
|
1135 |
|
|
#if ULTRASTOR_DEBUG & (UD_ABORT|UD_INTERRUPT)
|
1136 |
|
|
if (config.aborted[mscp_index])
|
1137 |
|
|
printk("Ux4 interrupt: MSCP %d (%x) aborted = %d\n",
|
1138 |
|
|
mscp_index, (unsigned int) mscp, config.aborted[mscp_index]);
|
1139 |
|
|
#endif
|
1140 |
|
|
config.aborted[mscp_index] = 0;
|
1141 |
|
|
|
1142 |
|
|
if (done)
|
1143 |
|
|
done(SCtmp);
|
1144 |
|
|
else
|
1145 |
|
|
printk("US14F: interrupt: unexpected interrupt\n");
|
1146 |
|
|
|
1147 |
|
|
if (config.slot ? inb(config.icm_address - 1) :
|
1148 |
|
|
(inb(SYS_DOORBELL_INTR(config.doorbell_address)) & 1))
|
1149 |
|
|
#if (ULTRASTOR_DEBUG & UD_MULTI_CMD)
|
1150 |
|
|
printk("Ux4F: multiple commands completed\n");
|
1151 |
|
|
#else
|
1152 |
|
|
;
|
1153 |
|
|
#endif
|
1154 |
|
|
|
1155 |
|
|
#if (ULTRASTOR_DEBUG & UD_INTERRUPT)
|
1156 |
|
|
printk("USx4F: interrupt: returning\n");
|
1157 |
|
|
#endif
|
1158 |
|
|
}
|
1159 |
|
|
|
1160 |
|
|
#ifdef MODULE
|
1161 |
|
|
/* Eventually this will go into an include file, but this will be later */
|
1162 |
|
|
Scsi_Host_Template driver_template = ULTRASTOR_14F;
|
1163 |
|
|
|
1164 |
|
|
#include "scsi_module.c"
|
1165 |
|
|
#endif
|