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3e0a4e85 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver | |
4 | * Copyright (C) 2001, 2002, 2003 | |
5 | * YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp> | |
6 | * GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org> | |
7 | * | |
1da177e4 LT |
8 | * Revision History: |
9 | * 1.0: Initial Release. | |
10 | * 1.1: Add /proc SDTR status. | |
11 | * Remove obsolete error handler nsp32_reset. | |
12 | * Some clean up. | |
13 | * 1.2: PowerPC (big endian) support. | |
14 | */ | |
15 | ||
1da177e4 LT |
16 | #include <linux/module.h> |
17 | #include <linux/init.h> | |
18 | #include <linux/kernel.h> | |
1da177e4 LT |
19 | #include <linux/string.h> |
20 | #include <linux/timer.h> | |
21 | #include <linux/ioport.h> | |
22 | #include <linux/major.h> | |
23 | #include <linux/blkdev.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/ctype.h> | |
910638ae | 28 | #include <linux/dma-mapping.h> |
1da177e4 LT |
29 | |
30 | #include <asm/dma.h> | |
1da177e4 LT |
31 | #include <asm/io.h> |
32 | ||
33 | #include <scsi/scsi.h> | |
34 | #include <scsi/scsi_cmnd.h> | |
35 | #include <scsi/scsi_device.h> | |
36 | #include <scsi/scsi_host.h> | |
37 | #include <scsi/scsi_ioctl.h> | |
38 | ||
1da177e4 LT |
39 | #include "nsp32.h" |
40 | ||
41 | ||
42 | /*********************************************************************** | |
43 | * Module parameters | |
44 | */ | |
45 | static int trans_mode = 0; /* default: BIOS */ | |
46 | module_param (trans_mode, int, 0); | |
47 | MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M"); | |
48 | #define ASYNC_MODE 1 | |
49 | #define ULTRA20M_MODE 2 | |
50 | ||
90ab5ee9 | 51 | static bool auto_param = 0; /* default: ON */ |
1da177e4 LT |
52 | module_param (auto_param, bool, 0); |
53 | MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)"); | |
54 | ||
90ab5ee9 | 55 | static bool disc_priv = 1; /* default: OFF */ |
1da177e4 LT |
56 | module_param (disc_priv, bool, 0); |
57 | MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))"); | |
58 | ||
59 | MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>"); | |
60 | MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module"); | |
61 | MODULE_LICENSE("GPL"); | |
62 | ||
63 | static const char *nsp32_release_version = "1.2"; | |
64 | ||
65 | ||
66 | /**************************************************************************** | |
67 | * Supported hardware | |
68 | */ | |
6f039790 | 69 | static struct pci_device_id nsp32_pci_table[] = { |
1da177e4 LT |
70 | { |
71 | .vendor = PCI_VENDOR_ID_IODATA, | |
72 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II, | |
73 | .subvendor = PCI_ANY_ID, | |
74 | .subdevice = PCI_ANY_ID, | |
75 | .driver_data = MODEL_IODATA, | |
76 | }, | |
77 | { | |
78 | .vendor = PCI_VENDOR_ID_WORKBIT, | |
79 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME, | |
80 | .subvendor = PCI_ANY_ID, | |
81 | .subdevice = PCI_ANY_ID, | |
82 | .driver_data = MODEL_KME, | |
83 | }, | |
84 | { | |
85 | .vendor = PCI_VENDOR_ID_WORKBIT, | |
86 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT, | |
87 | .subvendor = PCI_ANY_ID, | |
88 | .subdevice = PCI_ANY_ID, | |
89 | .driver_data = MODEL_WORKBIT, | |
90 | }, | |
91 | { | |
92 | .vendor = PCI_VENDOR_ID_WORKBIT, | |
93 | .device = PCI_DEVICE_ID_WORKBIT_STANDARD, | |
94 | .subvendor = PCI_ANY_ID, | |
95 | .subdevice = PCI_ANY_ID, | |
96 | .driver_data = MODEL_PCI_WORKBIT, | |
97 | }, | |
98 | { | |
99 | .vendor = PCI_VENDOR_ID_WORKBIT, | |
100 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC, | |
101 | .subvendor = PCI_ANY_ID, | |
102 | .subdevice = PCI_ANY_ID, | |
103 | .driver_data = MODEL_LOGITEC, | |
104 | }, | |
105 | { | |
106 | .vendor = PCI_VENDOR_ID_WORKBIT, | |
107 | .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC, | |
108 | .subvendor = PCI_ANY_ID, | |
109 | .subdevice = PCI_ANY_ID, | |
110 | .driver_data = MODEL_PCI_LOGITEC, | |
111 | }, | |
112 | { | |
113 | .vendor = PCI_VENDOR_ID_WORKBIT, | |
114 | .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO, | |
115 | .subvendor = PCI_ANY_ID, | |
116 | .subdevice = PCI_ANY_ID, | |
117 | .driver_data = MODEL_PCI_MELCO, | |
118 | }, | |
119 | { | |
120 | .vendor = PCI_VENDOR_ID_WORKBIT, | |
121 | .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II, | |
122 | .subvendor = PCI_ANY_ID, | |
123 | .subdevice = PCI_ANY_ID, | |
124 | .driver_data = MODEL_PCI_MELCO, | |
125 | }, | |
126 | {0,0,}, | |
127 | }; | |
128 | MODULE_DEVICE_TABLE(pci, nsp32_pci_table); | |
129 | ||
130 | static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */ | |
131 | ||
132 | ||
133 | /* | |
134 | * Period/AckWidth speed conversion table | |
135 | * | |
136 | * Note: This period/ackwidth speed table must be in descending order. | |
137 | */ | |
138 | static nsp32_sync_table nsp32_sync_table_40M[] = { | |
139 | /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */ | |
140 | {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */ | |
141 | {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */ | |
142 | {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */ | |
143 | {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */ | |
144 | {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */ | |
145 | {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */ | |
146 | {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */ | |
147 | {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */ | |
148 | {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */ | |
149 | }; | |
150 | ||
151 | static nsp32_sync_table nsp32_sync_table_20M[] = { | |
152 | {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */ | |
153 | {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */ | |
154 | {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */ | |
155 | {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */ | |
156 | {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */ | |
157 | {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */ | |
158 | {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */ | |
159 | {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */ | |
160 | {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */ | |
161 | }; | |
162 | ||
163 | static nsp32_sync_table nsp32_sync_table_pci[] = { | |
164 | {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */ | |
165 | {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */ | |
166 | {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */ | |
167 | {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */ | |
168 | {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */ | |
169 | {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */ | |
170 | {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */ | |
171 | {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */ | |
172 | {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */ | |
173 | }; | |
174 | ||
175 | /* | |
176 | * function declaration | |
177 | */ | |
178 | /* module entry point */ | |
6f039790 GKH |
179 | static int nsp32_probe (struct pci_dev *, const struct pci_device_id *); |
180 | static void nsp32_remove(struct pci_dev *); | |
181 | static int __init init_nsp32 (void); | |
182 | static void __exit exit_nsp32 (void); | |
1da177e4 | 183 | |
d0be4a7d | 184 | /* struct struct scsi_host_template */ |
35c6e0e5 | 185 | static int nsp32_show_info (struct seq_file *, struct Scsi_Host *); |
1da177e4 | 186 | |
1da177e4 | 187 | static int nsp32_detect (struct pci_dev *pdev); |
f281233d | 188 | static int nsp32_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); |
1da177e4 LT |
189 | static const char *nsp32_info (struct Scsi_Host *); |
190 | static int nsp32_release (struct Scsi_Host *); | |
191 | ||
192 | /* SCSI error handler */ | |
193 | static int nsp32_eh_abort (struct scsi_cmnd *); | |
1da177e4 LT |
194 | static int nsp32_eh_host_reset(struct scsi_cmnd *); |
195 | ||
196 | /* generate SCSI message */ | |
197 | static void nsp32_build_identify(struct scsi_cmnd *); | |
198 | static void nsp32_build_nop (struct scsi_cmnd *); | |
199 | static void nsp32_build_reject (struct scsi_cmnd *); | |
200 | static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char, unsigned char); | |
201 | ||
202 | /* SCSI message handler */ | |
203 | static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short); | |
204 | static void nsp32_msgout_occur (struct scsi_cmnd *); | |
205 | static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long, unsigned short); | |
206 | ||
207 | static int nsp32_setup_sg_table (struct scsi_cmnd *); | |
208 | static int nsp32_selection_autopara(struct scsi_cmnd *); | |
209 | static int nsp32_selection_autoscsi(struct scsi_cmnd *); | |
210 | static void nsp32_scsi_done (struct scsi_cmnd *); | |
211 | static int nsp32_arbitration (struct scsi_cmnd *, unsigned int); | |
212 | static int nsp32_reselection (struct scsi_cmnd *, unsigned char); | |
213 | static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int); | |
214 | static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short); | |
215 | ||
216 | /* SCSI SDTR */ | |
217 | static void nsp32_analyze_sdtr (struct scsi_cmnd *); | |
218 | static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char); | |
219 | static void nsp32_set_async (nsp32_hw_data *, nsp32_target *); | |
220 | static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *); | |
221 | static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, int, unsigned char); | |
222 | ||
223 | /* SCSI bus status handler */ | |
224 | static void nsp32_wait_req (nsp32_hw_data *, int); | |
225 | static void nsp32_wait_sack (nsp32_hw_data *, int); | |
226 | static void nsp32_sack_assert (nsp32_hw_data *); | |
227 | static void nsp32_sack_negate (nsp32_hw_data *); | |
228 | static void nsp32_do_bus_reset(nsp32_hw_data *); | |
229 | ||
230 | /* hardware interrupt handler */ | |
7d12e780 | 231 | static irqreturn_t do_nsp32_isr(int, void *); |
1da177e4 LT |
232 | |
233 | /* initialize hardware */ | |
234 | static int nsp32hw_init(nsp32_hw_data *); | |
235 | ||
236 | /* EEPROM handler */ | |
237 | static int nsp32_getprom_param (nsp32_hw_data *); | |
238 | static int nsp32_getprom_at24 (nsp32_hw_data *); | |
239 | static int nsp32_getprom_c16 (nsp32_hw_data *); | |
240 | static void nsp32_prom_start (nsp32_hw_data *); | |
241 | static void nsp32_prom_stop (nsp32_hw_data *); | |
242 | static int nsp32_prom_read (nsp32_hw_data *, int); | |
243 | static int nsp32_prom_read_bit (nsp32_hw_data *); | |
244 | static void nsp32_prom_write_bit(nsp32_hw_data *, int); | |
245 | static void nsp32_prom_set (nsp32_hw_data *, int, int); | |
246 | static int nsp32_prom_get (nsp32_hw_data *, int); | |
247 | ||
248 | /* debug/warning/info message */ | |
249 | static void nsp32_message (const char *, int, char *, char *, ...); | |
250 | #ifdef NSP32_DEBUG | |
251 | static void nsp32_dmessage(const char *, int, int, char *, ...); | |
252 | #endif | |
253 | ||
254 | /* | |
255 | * max_sectors is currently limited up to 128. | |
256 | */ | |
257 | static struct scsi_host_template nsp32_template = { | |
258 | .proc_name = "nsp32", | |
259 | .name = "Workbit NinjaSCSI-32Bi/UDE", | |
35c6e0e5 | 260 | .show_info = nsp32_show_info, |
1da177e4 LT |
261 | .info = nsp32_info, |
262 | .queuecommand = nsp32_queuecommand, | |
263 | .can_queue = 1, | |
264 | .sg_tablesize = NSP32_SG_SIZE, | |
265 | .max_sectors = 128, | |
1da177e4 | 266 | .this_id = NSP32_HOST_SCSIID, |
4af14d11 | 267 | .dma_boundary = PAGE_SIZE - 1, |
71b2e663 | 268 | .eh_abort_handler = nsp32_eh_abort, |
1da177e4 | 269 | .eh_host_reset_handler = nsp32_eh_host_reset, |
1da177e4 | 270 | /* .highmem_io = 1, */ |
1da177e4 LT |
271 | }; |
272 | ||
273 | #include "nsp32_io.h" | |
274 | ||
275 | /*********************************************************************** | |
276 | * debug, error print | |
277 | */ | |
278 | #ifndef NSP32_DEBUG | |
279 | # define NSP32_DEBUG_MASK 0x000000 | |
280 | # define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args) | |
281 | # define nsp32_dbg(mask, args...) /* */ | |
282 | #else | |
283 | # define NSP32_DEBUG_MASK 0xffffff | |
284 | # define nsp32_msg(type, args...) \ | |
cadbd4a5 | 285 | nsp32_message (__func__, __LINE__, (type), args) |
1da177e4 | 286 | # define nsp32_dbg(mask, args...) \ |
cadbd4a5 | 287 | nsp32_dmessage(__func__, __LINE__, (mask), args) |
1da177e4 LT |
288 | #endif |
289 | ||
290 | #define NSP32_DEBUG_QUEUECOMMAND BIT(0) | |
291 | #define NSP32_DEBUG_REGISTER BIT(1) | |
292 | #define NSP32_DEBUG_AUTOSCSI BIT(2) | |
293 | #define NSP32_DEBUG_INTR BIT(3) | |
294 | #define NSP32_DEBUG_SGLIST BIT(4) | |
295 | #define NSP32_DEBUG_BUSFREE BIT(5) | |
296 | #define NSP32_DEBUG_CDB_CONTENTS BIT(6) | |
297 | #define NSP32_DEBUG_RESELECTION BIT(7) | |
298 | #define NSP32_DEBUG_MSGINOCCUR BIT(8) | |
299 | #define NSP32_DEBUG_EEPROM BIT(9) | |
300 | #define NSP32_DEBUG_MSGOUTOCCUR BIT(10) | |
301 | #define NSP32_DEBUG_BUSRESET BIT(11) | |
302 | #define NSP32_DEBUG_RESTART BIT(12) | |
303 | #define NSP32_DEBUG_SYNC BIT(13) | |
304 | #define NSP32_DEBUG_WAIT BIT(14) | |
305 | #define NSP32_DEBUG_TARGETFLAG BIT(15) | |
306 | #define NSP32_DEBUG_PROC BIT(16) | |
307 | #define NSP32_DEBUG_INIT BIT(17) | |
308 | #define NSP32_SPECIAL_PRINT_REGISTER BIT(20) | |
309 | ||
310 | #define NSP32_DEBUG_BUF_LEN 100 | |
311 | ||
312 | static void nsp32_message(const char *func, int line, char *type, char *fmt, ...) | |
313 | { | |
314 | va_list args; | |
315 | char buf[NSP32_DEBUG_BUF_LEN]; | |
316 | ||
317 | va_start(args, fmt); | |
318 | vsnprintf(buf, sizeof(buf), fmt, args); | |
319 | va_end(args); | |
320 | ||
321 | #ifndef NSP32_DEBUG | |
322 | printk("%snsp32: %s\n", type, buf); | |
323 | #else | |
324 | printk("%snsp32: %s (%d): %s\n", type, func, line, buf); | |
325 | #endif | |
326 | } | |
327 | ||
328 | #ifdef NSP32_DEBUG | |
329 | static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...) | |
330 | { | |
331 | va_list args; | |
332 | char buf[NSP32_DEBUG_BUF_LEN]; | |
333 | ||
334 | va_start(args, fmt); | |
335 | vsnprintf(buf, sizeof(buf), fmt, args); | |
336 | va_end(args); | |
337 | ||
338 | if (mask & NSP32_DEBUG_MASK) { | |
339 | printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf); | |
340 | } | |
341 | } | |
342 | #endif | |
343 | ||
344 | #ifdef NSP32_DEBUG | |
345 | # include "nsp32_debug.c" | |
346 | #else | |
347 | # define show_command(arg) /* */ | |
348 | # define show_busphase(arg) /* */ | |
349 | # define show_autophase(arg) /* */ | |
350 | #endif | |
351 | ||
352 | /* | |
353 | * IDENTIFY Message | |
354 | */ | |
355 | static void nsp32_build_identify(struct scsi_cmnd *SCpnt) | |
356 | { | |
357 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
358 | int pos = data->msgout_len; | |
359 | int mode = FALSE; | |
360 | ||
361 | /* XXX: Auto DiscPriv detection is progressing... */ | |
362 | if (disc_priv == 0) { | |
363 | /* mode = TRUE; */ | |
364 | } | |
365 | ||
366 | data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++; | |
367 | ||
368 | data->msgout_len = pos; | |
369 | } | |
370 | ||
371 | /* | |
372 | * SDTR Message Routine | |
373 | */ | |
374 | static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt, | |
375 | unsigned char period, | |
376 | unsigned char offset) | |
377 | { | |
378 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
379 | int pos = data->msgout_len; | |
380 | ||
381 | data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++; | |
382 | data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++; | |
383 | data->msgoutbuf[pos] = EXTENDED_SDTR; pos++; | |
384 | data->msgoutbuf[pos] = period; pos++; | |
385 | data->msgoutbuf[pos] = offset; pos++; | |
386 | ||
387 | data->msgout_len = pos; | |
388 | } | |
389 | ||
390 | /* | |
391 | * No Operation Message | |
392 | */ | |
393 | static void nsp32_build_nop(struct scsi_cmnd *SCpnt) | |
394 | { | |
395 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
396 | int pos = data->msgout_len; | |
397 | ||
398 | if (pos != 0) { | |
399 | nsp32_msg(KERN_WARNING, | |
400 | "Some messages are already contained!"); | |
401 | return; | |
402 | } | |
403 | ||
404 | data->msgoutbuf[pos] = NOP; pos++; | |
405 | data->msgout_len = pos; | |
406 | } | |
407 | ||
408 | /* | |
409 | * Reject Message | |
410 | */ | |
411 | static void nsp32_build_reject(struct scsi_cmnd *SCpnt) | |
412 | { | |
413 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
414 | int pos = data->msgout_len; | |
415 | ||
416 | data->msgoutbuf[pos] = MESSAGE_REJECT; pos++; | |
417 | data->msgout_len = pos; | |
418 | } | |
419 | ||
420 | /* | |
421 | * timer | |
422 | */ | |
423 | #if 0 | |
424 | static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time) | |
425 | { | |
426 | unsigned int base = SCpnt->host->io_port; | |
427 | ||
428 | nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time); | |
429 | ||
430 | if (time & (~TIMER_CNT_MASK)) { | |
431 | nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow"); | |
432 | } | |
433 | ||
434 | nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK); | |
435 | } | |
436 | #endif | |
437 | ||
438 | ||
439 | /* | |
440 | * set SCSI command and other parameter to asic, and start selection phase | |
441 | */ | |
442 | static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt) | |
443 | { | |
444 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
445 | unsigned int base = SCpnt->device->host->io_port; | |
446 | unsigned int host_id = SCpnt->device->host->this_id; | |
422c0d61 | 447 | unsigned char target = scmd_id(SCpnt); |
1da177e4 LT |
448 | nsp32_autoparam *param = data->autoparam; |
449 | unsigned char phase; | |
450 | int i, ret; | |
451 | unsigned int msgout; | |
452 | u16_le s; | |
453 | ||
454 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in"); | |
455 | ||
456 | /* | |
457 | * check bus free | |
458 | */ | |
459 | phase = nsp32_read1(base, SCSI_BUS_MONITOR); | |
460 | if (phase != BUSMON_BUS_FREE) { | |
461 | nsp32_msg(KERN_WARNING, "bus busy"); | |
462 | show_busphase(phase & BUSMON_PHASE_MASK); | |
463 | SCpnt->result = DID_BUS_BUSY << 16; | |
464 | return FALSE; | |
465 | } | |
466 | ||
467 | /* | |
468 | * message out | |
469 | * | |
470 | * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout. | |
471 | * over 3 messages needs another routine. | |
472 | */ | |
473 | if (data->msgout_len == 0) { | |
474 | nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!"); | |
475 | SCpnt->result = DID_ERROR << 16; | |
476 | return FALSE; | |
477 | } else if (data->msgout_len > 0 && data->msgout_len <= 3) { | |
478 | msgout = 0; | |
479 | for (i = 0; i < data->msgout_len; i++) { | |
480 | /* | |
481 | * the sending order of the message is: | |
482 | * MCNT 3: MSG#0 -> MSG#1 -> MSG#2 | |
483 | * MCNT 2: MSG#1 -> MSG#2 | |
484 | * MCNT 1: MSG#2 | |
485 | */ | |
486 | msgout >>= 8; | |
487 | msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24); | |
488 | } | |
489 | msgout |= MV_VALID; /* MV valid */ | |
490 | msgout |= (unsigned int)data->msgout_len; /* len */ | |
491 | } else { | |
492 | /* data->msgout_len > 3 */ | |
493 | msgout = 0; | |
494 | } | |
495 | ||
496 | // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT)); | |
497 | // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); | |
498 | ||
499 | /* | |
500 | * setup asic parameter | |
501 | */ | |
502 | memset(param, 0, sizeof(nsp32_autoparam)); | |
503 | ||
504 | /* cdb */ | |
505 | for (i = 0; i < SCpnt->cmd_len; i++) { | |
506 | param->cdb[4 * i] = SCpnt->cmnd[i]; | |
507 | } | |
508 | ||
509 | /* outgoing messages */ | |
510 | param->msgout = cpu_to_le32(msgout); | |
511 | ||
512 | /* syncreg, ackwidth, target id, SREQ sampling rate */ | |
513 | param->syncreg = data->cur_target->syncreg; | |
514 | param->ackwidth = data->cur_target->ackwidth; | |
515 | param->target_id = BIT(host_id) | BIT(target); | |
516 | param->sample_reg = data->cur_target->sample_reg; | |
517 | ||
518 | // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg); | |
519 | ||
520 | /* command control */ | |
521 | param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER | | |
522 | AUTOSCSI_START | | |
523 | AUTO_MSGIN_00_OR_04 | | |
524 | AUTO_MSGIN_02 | | |
525 | AUTO_ATN ); | |
526 | ||
527 | ||
528 | /* transfer control */ | |
529 | s = 0; | |
530 | switch (data->trans_method) { | |
531 | case NSP32_TRANSFER_BUSMASTER: | |
532 | s |= BM_START; | |
533 | break; | |
534 | case NSP32_TRANSFER_MMIO: | |
535 | s |= CB_MMIO_MODE; | |
536 | break; | |
537 | case NSP32_TRANSFER_PIO: | |
538 | s |= CB_IO_MODE; | |
539 | break; | |
540 | default: | |
541 | nsp32_msg(KERN_ERR, "unknown trans_method"); | |
542 | break; | |
543 | } | |
544 | /* | |
545 | * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits. | |
546 | * For bus master transfer, it's taken off. | |
547 | */ | |
548 | s |= (TRANSFER_GO | ALL_COUNTER_CLR); | |
549 | param->transfer_control = cpu_to_le16(s); | |
550 | ||
551 | /* sg table addr */ | |
552 | param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr); | |
553 | ||
554 | /* | |
555 | * transfer parameter to ASIC | |
556 | */ | |
557 | nsp32_write4(base, SGT_ADR, data->auto_paddr); | |
558 | nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER | | |
559 | AUTO_PARAMETER ); | |
560 | ||
561 | /* | |
562 | * Check arbitration | |
563 | */ | |
564 | ret = nsp32_arbitration(SCpnt, base); | |
565 | ||
566 | return ret; | |
567 | } | |
568 | ||
569 | ||
570 | /* | |
571 | * Selection with AUTO SCSI (without AUTO PARAMETER) | |
572 | */ | |
573 | static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt) | |
574 | { | |
575 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
576 | unsigned int base = SCpnt->device->host->io_port; | |
577 | unsigned int host_id = SCpnt->device->host->this_id; | |
422c0d61 | 578 | unsigned char target = scmd_id(SCpnt); |
1da177e4 LT |
579 | unsigned char phase; |
580 | int status; | |
581 | unsigned short command = 0; | |
582 | unsigned int msgout = 0; | |
583 | unsigned short execph; | |
584 | int i; | |
585 | ||
586 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in"); | |
587 | ||
588 | /* | |
589 | * IRQ disable | |
590 | */ | |
591 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); | |
592 | ||
593 | /* | |
594 | * check bus line | |
595 | */ | |
596 | phase = nsp32_read1(base, SCSI_BUS_MONITOR); | |
287f7965 | 597 | if ((phase & BUSMON_BSY) || (phase & BUSMON_SEL)) { |
1da177e4 LT |
598 | nsp32_msg(KERN_WARNING, "bus busy"); |
599 | SCpnt->result = DID_BUS_BUSY << 16; | |
600 | status = 1; | |
601 | goto out; | |
602 | } | |
603 | ||
604 | /* | |
605 | * clear execph | |
606 | */ | |
607 | execph = nsp32_read2(base, SCSI_EXECUTE_PHASE); | |
608 | ||
609 | /* | |
610 | * clear FIFO counter to set CDBs | |
611 | */ | |
612 | nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER); | |
613 | ||
614 | /* | |
615 | * set CDB0 - CDB15 | |
616 | */ | |
617 | for (i = 0; i < SCpnt->cmd_len; i++) { | |
618 | nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]); | |
619 | } | |
620 | nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]); | |
621 | ||
622 | /* | |
623 | * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID | |
624 | */ | |
625 | nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target)); | |
626 | ||
627 | /* | |
628 | * set SCSI MSGOUT REG | |
629 | * | |
630 | * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout. | |
631 | * over 3 messages needs another routine. | |
632 | */ | |
633 | if (data->msgout_len == 0) { | |
634 | nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!"); | |
635 | SCpnt->result = DID_ERROR << 16; | |
636 | status = 1; | |
637 | goto out; | |
638 | } else if (data->msgout_len > 0 && data->msgout_len <= 3) { | |
639 | msgout = 0; | |
640 | for (i = 0; i < data->msgout_len; i++) { | |
641 | /* | |
642 | * the sending order of the message is: | |
643 | * MCNT 3: MSG#0 -> MSG#1 -> MSG#2 | |
644 | * MCNT 2: MSG#1 -> MSG#2 | |
645 | * MCNT 1: MSG#2 | |
646 | */ | |
647 | msgout >>= 8; | |
648 | msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24); | |
649 | } | |
650 | msgout |= MV_VALID; /* MV valid */ | |
651 | msgout |= (unsigned int)data->msgout_len; /* len */ | |
652 | nsp32_write4(base, SCSI_MSG_OUT, msgout); | |
653 | } else { | |
654 | /* data->msgout_len > 3 */ | |
655 | nsp32_write4(base, SCSI_MSG_OUT, 0); | |
656 | } | |
657 | ||
658 | /* | |
659 | * set selection timeout(= 250ms) | |
660 | */ | |
661 | nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); | |
662 | ||
663 | /* | |
664 | * set SREQ hazard killer sampling rate | |
665 | * | |
666 | * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz. | |
667 | * check other internal clock! | |
668 | */ | |
669 | nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg); | |
670 | ||
671 | /* | |
672 | * clear Arbit | |
673 | */ | |
674 | nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR); | |
675 | ||
676 | /* | |
677 | * set SYNCREG | |
678 | * Don't set BM_START_ADR before setting this register. | |
679 | */ | |
680 | nsp32_write1(base, SYNC_REG, data->cur_target->syncreg); | |
681 | ||
682 | /* | |
683 | * set ACKWIDTH | |
684 | */ | |
685 | nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth); | |
686 | ||
687 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, | |
688 | "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x", | |
689 | nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH), | |
690 | nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID)); | |
691 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x", | |
692 | data->msgout_len, msgout); | |
693 | ||
694 | /* | |
695 | * set SGT ADDR (physical address) | |
696 | */ | |
697 | nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr); | |
698 | ||
699 | /* | |
700 | * set TRANSFER CONTROL REG | |
701 | */ | |
702 | command = 0; | |
703 | command |= (TRANSFER_GO | ALL_COUNTER_CLR); | |
704 | if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { | |
2e917246 | 705 | if (scsi_bufflen(SCpnt) > 0) { |
1da177e4 LT |
706 | command |= BM_START; |
707 | } | |
708 | } else if (data->trans_method & NSP32_TRANSFER_MMIO) { | |
709 | command |= CB_MMIO_MODE; | |
710 | } else if (data->trans_method & NSP32_TRANSFER_PIO) { | |
711 | command |= CB_IO_MODE; | |
712 | } | |
713 | nsp32_write2(base, TRANSFER_CONTROL, command); | |
714 | ||
715 | /* | |
716 | * start AUTO SCSI, kick off arbitration | |
717 | */ | |
718 | command = (CLEAR_CDB_FIFO_POINTER | | |
719 | AUTOSCSI_START | | |
720 | AUTO_MSGIN_00_OR_04 | | |
721 | AUTO_MSGIN_02 | | |
722 | AUTO_ATN ); | |
723 | nsp32_write2(base, COMMAND_CONTROL, command); | |
724 | ||
725 | /* | |
726 | * Check arbitration | |
727 | */ | |
728 | status = nsp32_arbitration(SCpnt, base); | |
729 | ||
730 | out: | |
731 | /* | |
732 | * IRQ enable | |
733 | */ | |
734 | nsp32_write2(base, IRQ_CONTROL, 0); | |
735 | ||
736 | return status; | |
737 | } | |
738 | ||
739 | ||
740 | /* | |
741 | * Arbitration Status Check | |
742 | * | |
743 | * Note: Arbitration counter is waited during ARBIT_GO is not lifting. | |
744 | * Using udelay(1) consumes CPU time and system time, but | |
745 | * arbitration delay time is defined minimal 2.4us in SCSI | |
746 | * specification, thus udelay works as coarse grained wait timer. | |
747 | */ | |
748 | static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base) | |
749 | { | |
750 | unsigned char arbit; | |
751 | int status = TRUE; | |
752 | int time = 0; | |
753 | ||
754 | do { | |
755 | arbit = nsp32_read1(base, ARBIT_STATUS); | |
756 | time++; | |
757 | } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 && | |
758 | (time <= ARBIT_TIMEOUT_TIME)); | |
759 | ||
760 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, | |
761 | "arbit: 0x%x, delay time: %d", arbit, time); | |
762 | ||
763 | if (arbit & ARBIT_WIN) { | |
764 | /* Arbitration succeeded */ | |
765 | SCpnt->result = DID_OK << 16; | |
766 | nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */ | |
767 | } else if (arbit & ARBIT_FAIL) { | |
768 | /* Arbitration failed */ | |
769 | SCpnt->result = DID_BUS_BUSY << 16; | |
770 | status = FALSE; | |
771 | } else { | |
772 | /* | |
773 | * unknown error or ARBIT_GO timeout, | |
774 | * something lock up! guess no connection. | |
775 | */ | |
776 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout"); | |
777 | SCpnt->result = DID_NO_CONNECT << 16; | |
778 | status = FALSE; | |
779 | } | |
780 | ||
781 | /* | |
782 | * clear Arbit | |
783 | */ | |
784 | nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR); | |
785 | ||
786 | return status; | |
787 | } | |
788 | ||
789 | ||
790 | /* | |
791 | * reselection | |
792 | * | |
793 | * Note: This reselection routine is called from msgin_occur, | |
794 | * reselection target id&lun must be already set. | |
795 | * SCSI-2 says IDENTIFY implies RESTORE_POINTER operation. | |
796 | */ | |
797 | static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun) | |
798 | { | |
799 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
800 | unsigned int host_id = SCpnt->device->host->this_id; | |
801 | unsigned int base = SCpnt->device->host->io_port; | |
802 | unsigned char tmpid, newid; | |
803 | ||
804 | nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter"); | |
805 | ||
806 | /* | |
807 | * calculate reselected SCSI ID | |
808 | */ | |
809 | tmpid = nsp32_read1(base, RESELECT_ID); | |
810 | tmpid &= (~BIT(host_id)); | |
811 | newid = 0; | |
812 | while (tmpid) { | |
813 | if (tmpid & 1) { | |
814 | break; | |
815 | } | |
816 | tmpid >>= 1; | |
817 | newid++; | |
818 | } | |
819 | ||
820 | /* | |
821 | * If reselected New ID:LUN is not existed | |
822 | * or current nexus is not existed, unexpected | |
823 | * reselection is occurred. Send reject message. | |
824 | */ | |
825 | if (newid >= ARRAY_SIZE(data->lunt) || newlun >= ARRAY_SIZE(data->lunt[0])) { | |
826 | nsp32_msg(KERN_WARNING, "unknown id/lun"); | |
827 | return FALSE; | |
828 | } else if(data->lunt[newid][newlun].SCpnt == NULL) { | |
829 | nsp32_msg(KERN_WARNING, "no SCSI command is processing"); | |
830 | return FALSE; | |
831 | } | |
832 | ||
833 | data->cur_id = newid; | |
834 | data->cur_lun = newlun; | |
835 | data->cur_target = &(data->target[newid]); | |
836 | data->cur_lunt = &(data->lunt[newid][newlun]); | |
837 | ||
838 | /* reset SACK/SavedACK counter (or ALL clear?) */ | |
839 | nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); | |
840 | ||
841 | return TRUE; | |
842 | } | |
843 | ||
844 | ||
845 | /* | |
846 | * nsp32_setup_sg_table - build scatter gather list for transfer data | |
847 | * with bus master. | |
848 | * | |
849 | * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time. | |
850 | */ | |
851 | static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt) | |
852 | { | |
853 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
2e917246 | 854 | struct scatterlist *sg; |
1da177e4 LT |
855 | nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt; |
856 | int num, i; | |
857 | u32_le l; | |
858 | ||
1da177e4 LT |
859 | if (sgt == NULL) { |
860 | nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null"); | |
861 | return FALSE; | |
862 | } | |
863 | ||
2e917246 FT |
864 | num = scsi_dma_map(SCpnt); |
865 | if (!num) | |
866 | return TRUE; | |
867 | else if (num < 0) | |
868 | return FALSE; | |
869 | else { | |
870 | scsi_for_each_sg(SCpnt, sg, num, i) { | |
1da177e4 LT |
871 | /* |
872 | * Build nsp32_sglist, substitute sg dma addresses. | |
873 | */ | |
2e917246 FT |
874 | sgt[i].addr = cpu_to_le32(sg_dma_address(sg)); |
875 | sgt[i].len = cpu_to_le32(sg_dma_len(sg)); | |
1da177e4 LT |
876 | |
877 | if (le32_to_cpu(sgt[i].len) > 0x10000) { | |
878 | nsp32_msg(KERN_ERR, | |
879 | "can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len)); | |
880 | return FALSE; | |
881 | } | |
882 | nsp32_dbg(NSP32_DEBUG_SGLIST, | |
883 | "num 0x%x : addr 0x%lx len 0x%lx", | |
884 | i, | |
885 | le32_to_cpu(sgt[i].addr), | |
886 | le32_to_cpu(sgt[i].len )); | |
887 | } | |
888 | ||
889 | /* set end mark */ | |
890 | l = le32_to_cpu(sgt[num-1].len); | |
891 | sgt[num-1].len = cpu_to_le32(l | SGTEND); | |
1da177e4 LT |
892 | } |
893 | ||
894 | return TRUE; | |
895 | } | |
896 | ||
f281233d | 897 | static int nsp32_queuecommand_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) |
1da177e4 LT |
898 | { |
899 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
900 | nsp32_target *target; | |
901 | nsp32_lunt *cur_lunt; | |
902 | int ret; | |
903 | ||
904 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, | |
fc385045 | 905 | "enter. target: 0x%x LUN: 0x%llx cmnd: 0x%x cmndlen: 0x%x " |
1da177e4 LT |
906 | "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x", |
907 | SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len, | |
2e917246 | 908 | scsi_sg_count(SCpnt), scsi_sglist(SCpnt), scsi_bufflen(SCpnt)); |
1da177e4 LT |
909 | |
910 | if (data->CurrentSC != NULL) { | |
911 | nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request"); | |
912 | data->CurrentSC = NULL; | |
913 | SCpnt->result = DID_NO_CONNECT << 16; | |
914 | done(SCpnt); | |
915 | return 0; | |
916 | } | |
917 | ||
918 | /* check target ID is not same as this initiator ID */ | |
422c0d61 | 919 | if (scmd_id(SCpnt) == SCpnt->device->host->this_id) { |
9b13494c | 920 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "target==host???"); |
1da177e4 LT |
921 | SCpnt->result = DID_BAD_TARGET << 16; |
922 | done(SCpnt); | |
923 | return 0; | |
924 | } | |
925 | ||
926 | /* check target LUN is allowable value */ | |
927 | if (SCpnt->device->lun >= MAX_LUN) { | |
928 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun"); | |
929 | SCpnt->result = DID_BAD_TARGET << 16; | |
930 | done(SCpnt); | |
931 | return 0; | |
932 | } | |
933 | ||
934 | show_command(SCpnt); | |
935 | ||
936 | SCpnt->scsi_done = done; | |
937 | data->CurrentSC = SCpnt; | |
938 | SCpnt->SCp.Status = CHECK_CONDITION; | |
939 | SCpnt->SCp.Message = 0; | |
2e917246 | 940 | scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); |
1da177e4 | 941 | |
2e917246 FT |
942 | SCpnt->SCp.ptr = (char *)scsi_sglist(SCpnt); |
943 | SCpnt->SCp.this_residual = scsi_bufflen(SCpnt); | |
1da177e4 LT |
944 | SCpnt->SCp.buffer = NULL; |
945 | SCpnt->SCp.buffers_residual = 0; | |
946 | ||
947 | /* initialize data */ | |
948 | data->msgout_len = 0; | |
949 | data->msgin_len = 0; | |
950 | cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]); | |
951 | cur_lunt->SCpnt = SCpnt; | |
952 | cur_lunt->save_datp = 0; | |
953 | cur_lunt->msgin03 = FALSE; | |
954 | data->cur_lunt = cur_lunt; | |
955 | data->cur_id = SCpnt->device->id; | |
956 | data->cur_lun = SCpnt->device->lun; | |
957 | ||
958 | ret = nsp32_setup_sg_table(SCpnt); | |
959 | if (ret == FALSE) { | |
960 | nsp32_msg(KERN_ERR, "SGT fail"); | |
961 | SCpnt->result = DID_ERROR << 16; | |
962 | nsp32_scsi_done(SCpnt); | |
963 | return 0; | |
964 | } | |
965 | ||
966 | /* Build IDENTIFY */ | |
967 | nsp32_build_identify(SCpnt); | |
968 | ||
969 | /* | |
970 | * If target is the first time to transfer after the reset | |
971 | * (target don't have SDTR_DONE and SDTR_INITIATOR), sync | |
972 | * message SDTR is needed to do synchronous transfer. | |
973 | */ | |
422c0d61 | 974 | target = &data->target[scmd_id(SCpnt)]; |
1da177e4 LT |
975 | data->cur_target = target; |
976 | ||
977 | if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) { | |
978 | unsigned char period, offset; | |
979 | ||
980 | if (trans_mode != ASYNC_MODE) { | |
981 | nsp32_set_max_sync(data, target, &period, &offset); | |
982 | nsp32_build_sdtr(SCpnt, period, offset); | |
983 | target->sync_flag |= SDTR_INITIATOR; | |
984 | } else { | |
985 | nsp32_set_async(data, target); | |
986 | target->sync_flag |= SDTR_DONE; | |
987 | } | |
988 | ||
989 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, | |
990 | "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n", | |
991 | target->limit_entry, period, offset); | |
992 | } else if (target->sync_flag & SDTR_INITIATOR) { | |
993 | /* | |
994 | * It was negotiating SDTR with target, sending from the | |
995 | * initiator, but there are no chance to remove this flag. | |
996 | * Set async because we don't get proper negotiation. | |
997 | */ | |
998 | nsp32_set_async(data, target); | |
999 | target->sync_flag &= ~SDTR_INITIATOR; | |
1000 | target->sync_flag |= SDTR_DONE; | |
1001 | ||
1002 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, | |
1003 | "SDTR_INITIATOR: fall back to async"); | |
1004 | } else if (target->sync_flag & SDTR_TARGET) { | |
1005 | /* | |
1006 | * It was negotiating SDTR with target, sending from target, | |
1007 | * but there are no chance to remove this flag. Set async | |
1008 | * because we don't get proper negotiation. | |
1009 | */ | |
1010 | nsp32_set_async(data, target); | |
1011 | target->sync_flag &= ~SDTR_TARGET; | |
1012 | target->sync_flag |= SDTR_DONE; | |
1013 | ||
1014 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, | |
1015 | "Unknown SDTR from target is reached, fall back to async."); | |
1016 | } | |
1017 | ||
1018 | nsp32_dbg(NSP32_DEBUG_TARGETFLAG, | |
1019 | "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x", | |
1020 | SCpnt->device->id, target->sync_flag, target->syncreg, | |
1021 | target->ackwidth); | |
1022 | ||
1023 | /* Selection */ | |
1024 | if (auto_param == 0) { | |
1025 | ret = nsp32_selection_autopara(SCpnt); | |
1026 | } else { | |
1027 | ret = nsp32_selection_autoscsi(SCpnt); | |
1028 | } | |
1029 | ||
1030 | if (ret != TRUE) { | |
1031 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail"); | |
1032 | nsp32_scsi_done(SCpnt); | |
1033 | } | |
1034 | ||
1035 | return 0; | |
1036 | } | |
1037 | ||
f281233d JG |
1038 | static DEF_SCSI_QCMD(nsp32_queuecommand) |
1039 | ||
1da177e4 LT |
1040 | /* initialize asic */ |
1041 | static int nsp32hw_init(nsp32_hw_data *data) | |
1042 | { | |
1043 | unsigned int base = data->BaseAddress; | |
1044 | unsigned short irq_stat; | |
1045 | unsigned long lc_reg; | |
1046 | unsigned char power; | |
1047 | ||
1048 | lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE); | |
1049 | if ((lc_reg & 0xff00) == 0) { | |
1050 | lc_reg |= (0x20 << 8); | |
1051 | nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff); | |
1052 | } | |
1053 | ||
1054 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); | |
1055 | nsp32_write2(base, TRANSFER_CONTROL, 0); | |
1056 | nsp32_write4(base, BM_CNT, 0); | |
1057 | nsp32_write2(base, SCSI_EXECUTE_PHASE, 0); | |
1058 | ||
1059 | do { | |
1060 | irq_stat = nsp32_read2(base, IRQ_STATUS); | |
1061 | nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat); | |
1062 | } while (irq_stat & IRQSTATUS_ANY_IRQ); | |
1063 | ||
1064 | /* | |
1065 | * Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is | |
1066 | * designated by specification. | |
1067 | */ | |
1068 | if ((data->trans_method & NSP32_TRANSFER_PIO) || | |
1069 | (data->trans_method & NSP32_TRANSFER_MMIO)) { | |
1070 | nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40); | |
1071 | nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40); | |
1072 | } else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { | |
1073 | nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10); | |
1074 | nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60); | |
1075 | } else { | |
1076 | nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode"); | |
1077 | } | |
1078 | ||
1079 | nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x", | |
1080 | nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT), | |
1081 | nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT)); | |
1082 | ||
1083 | nsp32_index_write1(base, CLOCK_DIV, data->clock); | |
1084 | nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD); | |
1085 | nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */ | |
1086 | ||
1087 | /* | |
1088 | * initialize MISC_WRRD register | |
1089 | * | |
1090 | * Note: Designated parameters is obeyed as following: | |
1091 | * MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set. | |
1092 | * MISC_MASTER_TERMINATION_SELECT: It must be set. | |
1093 | * MISC_BMREQ_NEGATE_TIMING_SEL: It should be set. | |
1094 | * MISC_AUTOSEL_TIMING_SEL: It should be set. | |
1095 | * MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set. | |
1096 | * MISC_DELAYED_BMSTART: It's selected for safety. | |
1097 | * | |
1098 | * Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then | |
1099 | * we have to set TRANSFERCONTROL_BM_START as 0 and set | |
1100 | * appropriate value before restarting bus master transfer. | |
1101 | */ | |
1102 | nsp32_index_write2(base, MISC_WR, | |
1103 | (SCSI_DIRECTION_DETECTOR_SELECT | | |
1104 | DELAYED_BMSTART | | |
1105 | MASTER_TERMINATION_SELECT | | |
1106 | BMREQ_NEGATE_TIMING_SEL | | |
1107 | AUTOSEL_TIMING_SEL | | |
1108 | BMSTOP_CHANGE2_NONDATA_PHASE)); | |
1109 | ||
1110 | nsp32_index_write1(base, TERM_PWR_CONTROL, 0); | |
1111 | power = nsp32_index_read1(base, TERM_PWR_CONTROL); | |
1112 | if (!(power & SENSE)) { | |
1113 | nsp32_msg(KERN_INFO, "term power on"); | |
1114 | nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR); | |
1115 | } | |
1116 | ||
1117 | nsp32_write2(base, TIMER_SET, TIMER_STOP); | |
1118 | nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */ | |
1119 | ||
1120 | nsp32_write1(base, SYNC_REG, 0); | |
1121 | nsp32_write1(base, ACK_WIDTH, 0); | |
1122 | nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); | |
1123 | ||
1124 | /* | |
1125 | * enable to select designated IRQ (except for | |
1126 | * IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR) | |
1127 | */ | |
1128 | nsp32_index_write2(base, IRQ_SELECT, IRQSELECT_TIMER_IRQ | | |
1129 | IRQSELECT_SCSIRESET_IRQ | | |
1130 | IRQSELECT_FIFO_SHLD_IRQ | | |
1131 | IRQSELECT_RESELECT_IRQ | | |
1132 | IRQSELECT_PHASE_CHANGE_IRQ | | |
1133 | IRQSELECT_AUTO_SCSI_SEQ_IRQ | | |
1134 | // IRQSELECT_BMCNTERR_IRQ | | |
1135 | IRQSELECT_TARGET_ABORT_IRQ | | |
1136 | IRQSELECT_MASTER_ABORT_IRQ ); | |
1137 | nsp32_write2(base, IRQ_CONTROL, 0); | |
1138 | ||
1139 | /* PCI LED off */ | |
1140 | nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF); | |
1141 | nsp32_index_write1(base, EXT_PORT, LED_OFF); | |
1142 | ||
1143 | return TRUE; | |
1144 | } | |
1145 | ||
1146 | ||
1147 | /* interrupt routine */ | |
7d12e780 | 1148 | static irqreturn_t do_nsp32_isr(int irq, void *dev_id) |
1da177e4 LT |
1149 | { |
1150 | nsp32_hw_data *data = dev_id; | |
1151 | unsigned int base = data->BaseAddress; | |
1152 | struct scsi_cmnd *SCpnt = data->CurrentSC; | |
1153 | unsigned short auto_stat, irq_stat, trans_stat; | |
1154 | unsigned char busmon, busphase; | |
1155 | unsigned long flags; | |
1156 | int ret; | |
1157 | int handled = 0; | |
1da177e4 | 1158 | struct Scsi_Host *host = data->Host; |
6a31a8a6 | 1159 | |
1da177e4 | 1160 | spin_lock_irqsave(host->host_lock, flags); |
1da177e4 LT |
1161 | |
1162 | /* | |
1163 | * IRQ check, then enable IRQ mask | |
1164 | */ | |
1165 | irq_stat = nsp32_read2(base, IRQ_STATUS); | |
1166 | nsp32_dbg(NSP32_DEBUG_INTR, | |
1167 | "enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat); | |
1168 | /* is this interrupt comes from Ninja asic? */ | |
1169 | if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) { | |
1170 | nsp32_dbg(NSP32_DEBUG_INTR, "shared interrupt: irq other 0x%x", irq_stat); | |
1171 | goto out2; | |
1172 | } | |
1173 | handled = 1; | |
1174 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); | |
1175 | ||
1176 | busmon = nsp32_read1(base, SCSI_BUS_MONITOR); | |
1177 | busphase = busmon & BUSMON_PHASE_MASK; | |
1178 | ||
1179 | trans_stat = nsp32_read2(base, TRANSFER_STATUS); | |
1180 | if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) { | |
1181 | nsp32_msg(KERN_INFO, "card disconnect"); | |
1182 | if (data->CurrentSC != NULL) { | |
1183 | nsp32_msg(KERN_INFO, "clean up current SCSI command"); | |
1184 | SCpnt->result = DID_BAD_TARGET << 16; | |
1185 | nsp32_scsi_done(SCpnt); | |
1186 | } | |
1187 | goto out; | |
1188 | } | |
1189 | ||
1190 | /* Timer IRQ */ | |
1191 | if (irq_stat & IRQSTATUS_TIMER_IRQ) { | |
1192 | nsp32_dbg(NSP32_DEBUG_INTR, "timer stop"); | |
1193 | nsp32_write2(base, TIMER_SET, TIMER_STOP); | |
1194 | goto out; | |
1195 | } | |
1196 | ||
1197 | /* SCSI reset */ | |
1198 | if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) { | |
1199 | nsp32_msg(KERN_INFO, "detected someone do bus reset"); | |
1200 | nsp32_do_bus_reset(data); | |
1201 | if (SCpnt != NULL) { | |
1202 | SCpnt->result = DID_RESET << 16; | |
1203 | nsp32_scsi_done(SCpnt); | |
1204 | } | |
1205 | goto out; | |
1206 | } | |
1207 | ||
1208 | if (SCpnt == NULL) { | |
1209 | nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened"); | |
1210 | nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat); | |
1211 | goto out; | |
1212 | } | |
1213 | ||
1214 | /* | |
1215 | * AutoSCSI Interrupt. | |
1216 | * Note: This interrupt is occurred when AutoSCSI is finished. Then | |
1217 | * check SCSIEXECUTEPHASE, and do appropriate action. Each phases are | |
1218 | * recorded when AutoSCSI sequencer has been processed. | |
1219 | */ | |
1220 | if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) { | |
1221 | /* getting SCSI executed phase */ | |
1222 | auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE); | |
1223 | nsp32_write2(base, SCSI_EXECUTE_PHASE, 0); | |
1224 | ||
1225 | /* Selection Timeout, go busfree phase. */ | |
1226 | if (auto_stat & SELECTION_TIMEOUT) { | |
1227 | nsp32_dbg(NSP32_DEBUG_INTR, | |
1228 | "selection timeout occurred"); | |
1229 | ||
1230 | SCpnt->result = DID_TIME_OUT << 16; | |
1231 | nsp32_scsi_done(SCpnt); | |
1232 | goto out; | |
1233 | } | |
1234 | ||
1235 | if (auto_stat & MSGOUT_PHASE) { | |
1236 | /* | |
1237 | * MsgOut phase was processed. | |
1238 | * If MSG_IN_OCCUER is not set, then MsgOut phase is | |
1239 | * completed. Thus, msgout_len must reset. Otherwise, | |
1240 | * nothing to do here. If MSG_OUT_OCCUER is occurred, | |
1241 | * then we will encounter the condition and check. | |
1242 | */ | |
1243 | if (!(auto_stat & MSG_IN_OCCUER) && | |
1244 | (data->msgout_len <= 3)) { | |
1245 | /* | |
1246 | * !MSG_IN_OCCUER && msgout_len <=3 | |
1247 | * ---> AutoSCSI with MSGOUTreg is processed. | |
1248 | */ | |
1249 | data->msgout_len = 0; | |
1250 | }; | |
1251 | ||
1252 | nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed"); | |
1253 | } | |
1254 | ||
1255 | if ((auto_stat & DATA_IN_PHASE) && | |
2e917246 | 1256 | (scsi_get_resid(SCpnt) > 0) && |
1da177e4 LT |
1257 | ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) { |
1258 | printk( "auto+fifo\n"); | |
1259 | //nsp32_pio_read(SCpnt); | |
1260 | } | |
1261 | ||
1262 | if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) { | |
1263 | /* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */ | |
1264 | nsp32_dbg(NSP32_DEBUG_INTR, | |
1265 | "Data in/out phase processed"); | |
1266 | ||
1267 | /* read BMCNT, SGT pointer addr */ | |
1268 | nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx", | |
1269 | nsp32_read4(base, BM_CNT)); | |
1270 | nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx", | |
1271 | nsp32_read4(base, SGT_ADR)); | |
1272 | nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx", | |
1273 | nsp32_read4(base, SACK_CNT)); | |
1274 | nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx", | |
1275 | nsp32_read4(base, SAVED_SACK_CNT)); | |
1276 | ||
25985edc | 1277 | scsi_set_resid(SCpnt, 0); /* all data transferred! */ |
1da177e4 LT |
1278 | } |
1279 | ||
1280 | /* | |
1281 | * MsgIn Occur | |
1282 | */ | |
1283 | if (auto_stat & MSG_IN_OCCUER) { | |
1284 | nsp32_msgin_occur(SCpnt, irq_stat, auto_stat); | |
1285 | } | |
1286 | ||
1287 | /* | |
1288 | * MsgOut Occur | |
1289 | */ | |
1290 | if (auto_stat & MSG_OUT_OCCUER) { | |
1291 | nsp32_msgout_occur(SCpnt); | |
1292 | } | |
1293 | ||
1294 | /* | |
1295 | * Bus Free Occur | |
1296 | */ | |
1297 | if (auto_stat & BUS_FREE_OCCUER) { | |
1298 | ret = nsp32_busfree_occur(SCpnt, auto_stat); | |
1299 | if (ret == TRUE) { | |
1300 | goto out; | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | if (auto_stat & STATUS_PHASE) { | |
1305 | /* | |
1306 | * Read CSB and substitute CSB for SCpnt->result | |
1307 | * to save status phase stutas byte. | |
1308 | * scsi error handler checks host_byte (DID_*: | |
1309 | * low level driver to indicate status), then checks | |
1310 | * status_byte (SCSI status byte). | |
1311 | */ | |
1312 | SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN); | |
1313 | } | |
1314 | ||
1315 | if (auto_stat & ILLEGAL_PHASE) { | |
1316 | /* Illegal phase is detected. SACK is not back. */ | |
1317 | nsp32_msg(KERN_WARNING, | |
1318 | "AUTO SCSI ILLEGAL PHASE OCCUR!!!!"); | |
1319 | ||
1320 | /* TODO: currently we don't have any action... bus reset? */ | |
1321 | ||
1322 | /* | |
1323 | * To send back SACK, assert, wait, and negate. | |
1324 | */ | |
1325 | nsp32_sack_assert(data); | |
1326 | nsp32_wait_req(data, NEGATE); | |
1327 | nsp32_sack_negate(data); | |
1328 | ||
1329 | } | |
1330 | ||
1331 | if (auto_stat & COMMAND_PHASE) { | |
1332 | /* nothing to do */ | |
1333 | nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed"); | |
1334 | } | |
1335 | ||
1336 | if (auto_stat & AUTOSCSI_BUSY) { | |
1337 | /* AutoSCSI is running */ | |
1338 | } | |
1339 | ||
1340 | show_autophase(auto_stat); | |
1341 | } | |
1342 | ||
1343 | /* FIFO_SHLD_IRQ */ | |
1344 | if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) { | |
1345 | nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ"); | |
1346 | ||
1347 | switch(busphase) { | |
1348 | case BUSPHASE_DATA_OUT: | |
1349 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write"); | |
1350 | ||
1351 | //nsp32_pio_write(SCpnt); | |
1352 | ||
1353 | break; | |
1354 | ||
1355 | case BUSPHASE_DATA_IN: | |
1356 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read"); | |
1357 | ||
1358 | //nsp32_pio_read(SCpnt); | |
1359 | ||
1360 | break; | |
1361 | ||
1362 | case BUSPHASE_STATUS: | |
1363 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status"); | |
1364 | ||
1365 | SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN); | |
1366 | ||
1367 | break; | |
1368 | default: | |
1369 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase"); | |
1370 | nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat); | |
1371 | show_busphase(busphase); | |
1372 | break; | |
1373 | } | |
1374 | ||
1375 | goto out; | |
1376 | } | |
1377 | ||
1378 | /* Phase Change IRQ */ | |
1379 | if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) { | |
1380 | nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ"); | |
1381 | ||
1382 | switch(busphase) { | |
1383 | case BUSPHASE_MESSAGE_IN: | |
1384 | nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in"); | |
1385 | nsp32_msgin_occur(SCpnt, irq_stat, 0); | |
1386 | break; | |
1387 | default: | |
1388 | nsp32_msg(KERN_WARNING, "phase chg/other phase?"); | |
1389 | nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n", | |
1390 | irq_stat, trans_stat); | |
1391 | show_busphase(busphase); | |
1392 | break; | |
1393 | } | |
1394 | goto out; | |
1395 | } | |
1396 | ||
1397 | /* PCI_IRQ */ | |
1398 | if (irq_stat & IRQSTATUS_PCI_IRQ) { | |
1399 | nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred"); | |
1400 | /* Do nothing */ | |
1401 | } | |
1402 | ||
1403 | /* BMCNTERR_IRQ */ | |
1404 | if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) { | |
1405 | nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! "); | |
1406 | /* | |
1407 | * TODO: To be implemented improving bus master | |
06fe9fb4 | 1408 | * transfer reliability when BMCNTERR is occurred in |
1da177e4 LT |
1409 | * AutoSCSI phase described in specification. |
1410 | */ | |
1411 | } | |
1412 | ||
1413 | #if 0 | |
1414 | nsp32_dbg(NSP32_DEBUG_INTR, | |
1415 | "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat); | |
1416 | show_busphase(busphase); | |
1417 | #endif | |
1418 | ||
1419 | out: | |
1420 | /* disable IRQ mask */ | |
1421 | nsp32_write2(base, IRQ_CONTROL, 0); | |
1422 | ||
1423 | out2: | |
1da177e4 | 1424 | spin_unlock_irqrestore(host->host_lock, flags); |
1da177e4 LT |
1425 | |
1426 | nsp32_dbg(NSP32_DEBUG_INTR, "exit"); | |
1427 | ||
1428 | return IRQ_RETVAL(handled); | |
1429 | } | |
1430 | ||
35c6e0e5 AV |
1431 | |
1432 | static int nsp32_show_info(struct seq_file *m, struct Scsi_Host *host) | |
1da177e4 | 1433 | { |
1da177e4 LT |
1434 | unsigned long flags; |
1435 | nsp32_hw_data *data; | |
1da177e4 | 1436 | int hostno; |
1da177e4 LT |
1437 | unsigned int base; |
1438 | unsigned char mode_reg; | |
1439 | int id, speed; | |
1440 | long model; | |
1441 | ||
1da177e4 | 1442 | hostno = host->host_no; |
1da177e4 LT |
1443 | data = (nsp32_hw_data *)host->hostdata; |
1444 | base = host->io_port; | |
1445 | ||
91c40f24 | 1446 | seq_puts(m, "NinjaSCSI-32 status\n\n"); |
0c3de38f RV |
1447 | seq_printf(m, "Driver version: %s, $Revision: 1.33 $\n", nsp32_release_version); |
1448 | seq_printf(m, "SCSI host No.: %d\n", hostno); | |
1449 | seq_printf(m, "IRQ: %d\n", host->irq); | |
1450 | seq_printf(m, "IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1); | |
1451 | seq_printf(m, "MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1); | |
1452 | seq_printf(m, "sg_tablesize: %d\n", host->sg_tablesize); | |
1453 | seq_printf(m, "Chip revision: 0x%x\n", (nsp32_read2(base, INDEX_REG) >> 8) & 0xff); | |
1da177e4 LT |
1454 | |
1455 | mode_reg = nsp32_index_read1(base, CHIP_MODE); | |
1456 | model = data->pci_devid->driver_data; | |
1457 | ||
1458 | #ifdef CONFIG_PM | |
0c3de38f | 1459 | seq_printf(m, "Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no"); |
1da177e4 | 1460 | #endif |
0c3de38f | 1461 | seq_printf(m, "OEM: %ld, %s\n", (mode_reg & (OEM0|OEM1)), nsp32_model[model]); |
1da177e4 LT |
1462 | |
1463 | spin_lock_irqsave(&(data->Lock), flags); | |
0c3de38f | 1464 | seq_printf(m, "CurrentSC: 0x%p\n\n", data->CurrentSC); |
1da177e4 LT |
1465 | spin_unlock_irqrestore(&(data->Lock), flags); |
1466 | ||
1467 | ||
91c40f24 | 1468 | seq_puts(m, "SDTR status\n"); |
1da177e4 LT |
1469 | for (id = 0; id < ARRAY_SIZE(data->target); id++) { |
1470 | ||
0c3de38f | 1471 | seq_printf(m, "id %d: ", id); |
1da177e4 LT |
1472 | |
1473 | if (id == host->this_id) { | |
91c40f24 | 1474 | seq_puts(m, "----- NinjaSCSI-32 host adapter\n"); |
1da177e4 LT |
1475 | continue; |
1476 | } | |
1477 | ||
1478 | if (data->target[id].sync_flag == SDTR_DONE) { | |
1479 | if (data->target[id].period == 0 && | |
1480 | data->target[id].offset == ASYNC_OFFSET ) { | |
91c40f24 | 1481 | seq_puts(m, "async"); |
1da177e4 | 1482 | } else { |
91c40f24 | 1483 | seq_puts(m, " sync"); |
1da177e4 LT |
1484 | } |
1485 | } else { | |
91c40f24 | 1486 | seq_puts(m, " none"); |
1da177e4 LT |
1487 | } |
1488 | ||
1489 | if (data->target[id].period != 0) { | |
1490 | ||
1491 | speed = 1000000 / (data->target[id].period * 4); | |
1492 | ||
0c3de38f | 1493 | seq_printf(m, " transfer %d.%dMB/s, offset %d", |
1da177e4 LT |
1494 | speed / 1000, |
1495 | speed % 1000, | |
1496 | data->target[id].offset | |
1497 | ); | |
1498 | } | |
f50332ff | 1499 | seq_putc(m, '\n'); |
1da177e4 | 1500 | } |
35c6e0e5 | 1501 | return 0; |
1da177e4 | 1502 | } |
1da177e4 LT |
1503 | |
1504 | ||
1505 | ||
1506 | /* | |
1507 | * Reset parameters and call scsi_done for data->cur_lunt. | |
1508 | * Be careful setting SCpnt->result = DID_* before calling this function. | |
1509 | */ | |
1510 | static void nsp32_scsi_done(struct scsi_cmnd *SCpnt) | |
1511 | { | |
1512 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
1513 | unsigned int base = SCpnt->device->host->io_port; | |
1514 | ||
2e917246 | 1515 | scsi_dma_unmap(SCpnt); |
1da177e4 | 1516 | |
1da177e4 LT |
1517 | /* |
1518 | * clear TRANSFERCONTROL_BM_START | |
1519 | */ | |
1520 | nsp32_write2(base, TRANSFER_CONTROL, 0); | |
1521 | nsp32_write4(base, BM_CNT, 0); | |
1522 | ||
1523 | /* | |
1524 | * call scsi_done | |
1525 | */ | |
1526 | (*SCpnt->scsi_done)(SCpnt); | |
1527 | ||
1528 | /* | |
1529 | * reset parameters | |
1530 | */ | |
1531 | data->cur_lunt->SCpnt = NULL; | |
1532 | data->cur_lunt = NULL; | |
1533 | data->cur_target = NULL; | |
1534 | data->CurrentSC = NULL; | |
1535 | } | |
1536 | ||
1537 | ||
1538 | /* | |
1539 | * Bus Free Occur | |
1540 | * | |
1541 | * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase | |
1542 | * with ACK reply when below condition is matched: | |
1543 | * MsgIn 00: Command Complete. | |
1544 | * MsgIn 02: Save Data Pointer. | |
1125c70a | 1545 | * MsgIn 04: Disconnect. |
1da177e4 LT |
1546 | * In other case, unexpected BUSFREE is detected. |
1547 | */ | |
1548 | static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph) | |
1549 | { | |
1550 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
1551 | unsigned int base = SCpnt->device->host->io_port; | |
1552 | ||
1553 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph); | |
1554 | show_autophase(execph); | |
1555 | ||
1556 | nsp32_write4(base, BM_CNT, 0); | |
1557 | nsp32_write2(base, TRANSFER_CONTROL, 0); | |
1558 | ||
1559 | /* | |
1560 | * MsgIn 02: Save Data Pointer | |
1561 | * | |
1562 | * VALID: | |
1563 | * Save Data Pointer is received. Adjust pointer. | |
1564 | * | |
1565 | * NO-VALID: | |
1566 | * SCSI-3 says if Save Data Pointer is not received, then we restart | |
1567 | * processing and we can't adjust any SCSI data pointer in next data | |
1568 | * phase. | |
1569 | */ | |
1570 | if (execph & MSGIN_02_VALID) { | |
1571 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid"); | |
1572 | ||
1573 | /* | |
1574 | * Check sack_cnt/saved_sack_cnt, then adjust sg table if | |
1575 | * needed. | |
1576 | */ | |
1577 | if (!(execph & MSGIN_00_VALID) && | |
1578 | ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) { | |
1579 | unsigned int sacklen, s_sacklen; | |
1580 | ||
1581 | /* | |
1582 | * Read SACK count and SAVEDSACK count, then compare. | |
1583 | */ | |
1584 | sacklen = nsp32_read4(base, SACK_CNT ); | |
1585 | s_sacklen = nsp32_read4(base, SAVED_SACK_CNT); | |
1586 | ||
1587 | /* | |
1588 | * If SAVEDSACKCNT == 0, it means SavedDataPointer is | |
25985edc | 1589 | * come after data transferring. |
1da177e4 LT |
1590 | */ |
1591 | if (s_sacklen > 0) { | |
1592 | /* | |
1593 | * Comparing between sack and savedsack to | |
1594 | * check the condition of AutoMsgIn03. | |
1595 | * | |
1596 | * If they are same, set msgin03 == TRUE, | |
1597 | * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at | |
1598 | * reselection. On the other hand, if they | |
1599 | * aren't same, set msgin03 == FALSE, and | |
1600 | * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at | |
1601 | * reselection. | |
1602 | */ | |
1603 | if (sacklen != s_sacklen) { | |
1604 | data->cur_lunt->msgin03 = FALSE; | |
1605 | } else { | |
1606 | data->cur_lunt->msgin03 = TRUE; | |
1607 | } | |
1608 | ||
1609 | nsp32_adjust_busfree(SCpnt, s_sacklen); | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | /* This value has not substitude with valid value yet... */ | |
1614 | //data->cur_lunt->save_datp = data->cur_datp; | |
1615 | } else { | |
1616 | /* | |
1617 | * no processing. | |
1618 | */ | |
1619 | } | |
1620 | ||
1621 | if (execph & MSGIN_03_VALID) { | |
1622 | /* MsgIn03 was valid to be processed. No need processing. */ | |
1623 | } | |
1624 | ||
1625 | /* | |
1626 | * target SDTR check | |
1627 | */ | |
1628 | if (data->cur_target->sync_flag & SDTR_INITIATOR) { | |
1629 | /* | |
1630 | * SDTR negotiation pulled by the initiator has not | |
1631 | * finished yet. Fall back to ASYNC mode. | |
1632 | */ | |
1633 | nsp32_set_async(data, data->cur_target); | |
1634 | data->cur_target->sync_flag &= ~SDTR_INITIATOR; | |
1635 | data->cur_target->sync_flag |= SDTR_DONE; | |
1636 | } else if (data->cur_target->sync_flag & SDTR_TARGET) { | |
1637 | /* | |
1638 | * SDTR negotiation pulled by the target has been | |
1639 | * negotiating. | |
1640 | */ | |
1641 | if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) { | |
1642 | /* | |
1643 | * If valid message is received, then | |
1644 | * negotiation is succeeded. | |
1645 | */ | |
1646 | } else { | |
1647 | /* | |
1648 | * On the contrary, if unexpected bus free is | |
1649 | * occurred, then negotiation is failed. Fall | |
1650 | * back to ASYNC mode. | |
1651 | */ | |
1652 | nsp32_set_async(data, data->cur_target); | |
1653 | } | |
1654 | data->cur_target->sync_flag &= ~SDTR_TARGET; | |
1655 | data->cur_target->sync_flag |= SDTR_DONE; | |
1656 | } | |
1657 | ||
1658 | /* | |
1659 | * It is always ensured by SCSI standard that initiator | |
1660 | * switches into Bus Free Phase after | |
1661 | * receiving message 00 (Command Complete), 04 (Disconnect). | |
1662 | * It's the reason that processing here is valid. | |
1663 | */ | |
1664 | if (execph & MSGIN_00_VALID) { | |
1665 | /* MsgIn 00: Command Complete */ | |
1666 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete"); | |
1667 | ||
1668 | SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN); | |
1669 | SCpnt->SCp.Message = 0; | |
1670 | nsp32_dbg(NSP32_DEBUG_BUSFREE, | |
1671 | "normal end stat=0x%x resid=0x%x\n", | |
2e917246 | 1672 | SCpnt->SCp.Status, scsi_get_resid(SCpnt)); |
1da177e4 LT |
1673 | SCpnt->result = (DID_OK << 16) | |
1674 | (SCpnt->SCp.Message << 8) | | |
1675 | (SCpnt->SCp.Status << 0); | |
1676 | nsp32_scsi_done(SCpnt); | |
1677 | /* All operation is done */ | |
1678 | return TRUE; | |
1679 | } else if (execph & MSGIN_04_VALID) { | |
1680 | /* MsgIn 04: Disconnect */ | |
1681 | SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN); | |
1682 | SCpnt->SCp.Message = 4; | |
1683 | ||
1684 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect"); | |
1685 | return TRUE; | |
1686 | } else { | |
1687 | /* Unexpected bus free */ | |
1688 | nsp32_msg(KERN_WARNING, "unexpected bus free occurred"); | |
1689 | ||
1690 | /* DID_ERROR? */ | |
1691 | //SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0); | |
1692 | SCpnt->result = DID_ERROR << 16; | |
1693 | nsp32_scsi_done(SCpnt); | |
1694 | return TRUE; | |
1695 | } | |
1696 | return FALSE; | |
1697 | } | |
1698 | ||
1699 | ||
1700 | /* | |
1701 | * nsp32_adjust_busfree - adjusting SG table | |
1702 | * | |
1703 | * Note: This driver adjust the SG table using SCSI ACK | |
1704 | * counter instead of BMCNT counter! | |
1705 | */ | |
1706 | static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen) | |
1707 | { | |
1708 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
1709 | int old_entry = data->cur_entry; | |
1710 | int new_entry; | |
1711 | int sg_num = data->cur_lunt->sg_num; | |
1712 | nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt; | |
1713 | unsigned int restlen, sentlen; | |
1714 | u32_le len, addr; | |
1715 | ||
2e917246 | 1716 | nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", scsi_get_resid(SCpnt)); |
1da177e4 LT |
1717 | |
1718 | /* adjust saved SACK count with 4 byte start address boundary */ | |
1719 | s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3; | |
1720 | ||
1721 | /* | |
1722 | * calculate new_entry from sack count and each sgt[].len | |
1723 | * calculate the byte which is intent to send | |
1724 | */ | |
1725 | sentlen = 0; | |
1726 | for (new_entry = old_entry; new_entry < sg_num; new_entry++) { | |
1727 | sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND); | |
1728 | if (sentlen > s_sacklen) { | |
1729 | break; | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | /* all sgt is processed */ | |
1734 | if (new_entry == sg_num) { | |
1735 | goto last; | |
1736 | } | |
1737 | ||
1738 | if (sentlen == s_sacklen) { | |
1739 | /* XXX: confirm it's ok or not */ | |
1740 | /* In this case, it's ok because we are at | |
1741 | the head element of the sg. restlen is correctly calculated. */ | |
1742 | } | |
1743 | ||
25985edc | 1744 | /* calculate the rest length for transferring */ |
1da177e4 LT |
1745 | restlen = sentlen - s_sacklen; |
1746 | ||
1747 | /* update adjusting current SG table entry */ | |
1748 | len = le32_to_cpu(sgt[new_entry].len); | |
1749 | addr = le32_to_cpu(sgt[new_entry].addr); | |
1750 | addr += (len - restlen); | |
1751 | sgt[new_entry].addr = cpu_to_le32(addr); | |
1752 | sgt[new_entry].len = cpu_to_le32(restlen); | |
1753 | ||
1754 | /* set cur_entry with new_entry */ | |
1755 | data->cur_entry = new_entry; | |
1756 | ||
1757 | return; | |
1758 | ||
1759 | last: | |
2e917246 | 1760 | if (scsi_get_resid(SCpnt) < sentlen) { |
1da177e4 LT |
1761 | nsp32_msg(KERN_ERR, "resid underflow"); |
1762 | } | |
1763 | ||
2e917246 FT |
1764 | scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) - sentlen); |
1765 | nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", scsi_get_resid(SCpnt)); | |
1da177e4 LT |
1766 | |
1767 | /* update hostdata and lun */ | |
1768 | ||
1769 | return; | |
1770 | } | |
1771 | ||
1772 | ||
1773 | /* | |
1774 | * It's called MsgOut phase occur. | |
1775 | * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in | |
1776 | * message out phase. It, however, has more than 3 messages, | |
1777 | * HBA creates the interrupt and we have to process by hand. | |
1778 | */ | |
1779 | static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt) | |
1780 | { | |
1781 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
1782 | unsigned int base = SCpnt->device->host->io_port; | |
1783 | //unsigned short command; | |
1784 | long new_sgtp; | |
1785 | int i; | |
1786 | ||
1787 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, | |
1788 | "enter: msgout_len: 0x%x", data->msgout_len); | |
1789 | ||
1790 | /* | |
1791 | * If MsgOut phase is occurred without having any | |
1792 | * message, then No_Operation is sent (SCSI-2). | |
1793 | */ | |
1794 | if (data->msgout_len == 0) { | |
1795 | nsp32_build_nop(SCpnt); | |
1796 | } | |
1797 | ||
1798 | /* | |
1799 | * Set SGTP ADDR current entry for restarting AUTOSCSI, | |
1800 | * because SGTP is incremented next point. | |
1801 | * There is few statement in the specification... | |
1802 | */ | |
1803 | new_sgtp = data->cur_lunt->sglun_paddr + | |
1804 | (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable)); | |
1805 | ||
1806 | /* | |
1807 | * send messages | |
1808 | */ | |
1809 | for (i = 0; i < data->msgout_len; i++) { | |
1810 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, | |
1811 | "%d : 0x%x", i, data->msgoutbuf[i]); | |
1812 | ||
1813 | /* | |
1814 | * Check REQ is asserted. | |
1815 | */ | |
1816 | nsp32_wait_req(data, ASSERT); | |
1817 | ||
1818 | if (i == (data->msgout_len - 1)) { | |
1819 | /* | |
1820 | * If the last message, set the AutoSCSI restart | |
1821 | * before send back the ack message. AutoSCSI | |
1822 | * restart automatically negate ATN signal. | |
1823 | */ | |
1824 | //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02); | |
1825 | //nsp32_restart_autoscsi(SCpnt, command); | |
1826 | nsp32_write2(base, COMMAND_CONTROL, | |
1827 | (CLEAR_CDB_FIFO_POINTER | | |
1828 | AUTO_COMMAND_PHASE | | |
1829 | AUTOSCSI_RESTART | | |
1830 | AUTO_MSGIN_00_OR_04 | | |
1831 | AUTO_MSGIN_02 )); | |
1832 | } | |
1833 | /* | |
1834 | * Write data with SACK, then wait sack is | |
1835 | * automatically negated. | |
1836 | */ | |
1837 | nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]); | |
1838 | nsp32_wait_sack(data, NEGATE); | |
1839 | ||
1840 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n", | |
1841 | nsp32_read1(base, SCSI_BUS_MONITOR)); | |
1842 | }; | |
1843 | ||
1844 | data->msgout_len = 0; | |
1845 | ||
1846 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit"); | |
1847 | } | |
1848 | ||
1849 | /* | |
1850 | * Restart AutoSCSI | |
1851 | * | |
1852 | * Note: Restarting AutoSCSI needs set: | |
1853 | * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL | |
1854 | */ | |
1855 | static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command) | |
1856 | { | |
1857 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
1858 | unsigned int base = data->BaseAddress; | |
1859 | unsigned short transfer = 0; | |
1860 | ||
1861 | nsp32_dbg(NSP32_DEBUG_RESTART, "enter"); | |
1862 | ||
1863 | if (data->cur_target == NULL || data->cur_lunt == NULL) { | |
1864 | nsp32_msg(KERN_ERR, "Target or Lun is invalid"); | |
1865 | } | |
1866 | ||
1867 | /* | |
1868 | * set SYNC_REG | |
1869 | * Don't set BM_START_ADR before setting this register. | |
1870 | */ | |
1871 | nsp32_write1(base, SYNC_REG, data->cur_target->syncreg); | |
1872 | ||
1873 | /* | |
1874 | * set ACKWIDTH | |
1875 | */ | |
1876 | nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth); | |
1877 | ||
1878 | /* | |
1879 | * set SREQ hazard killer sampling rate | |
1880 | */ | |
1881 | nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg); | |
1882 | ||
1883 | /* | |
1884 | * set SGT ADDR (physical address) | |
1885 | */ | |
1886 | nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr); | |
1887 | ||
1888 | /* | |
1889 | * set TRANSFER CONTROL REG | |
1890 | */ | |
1891 | transfer = 0; | |
1892 | transfer |= (TRANSFER_GO | ALL_COUNTER_CLR); | |
1893 | if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { | |
2e917246 | 1894 | if (scsi_bufflen(SCpnt) > 0) { |
1da177e4 LT |
1895 | transfer |= BM_START; |
1896 | } | |
1897 | } else if (data->trans_method & NSP32_TRANSFER_MMIO) { | |
1898 | transfer |= CB_MMIO_MODE; | |
1899 | } else if (data->trans_method & NSP32_TRANSFER_PIO) { | |
1900 | transfer |= CB_IO_MODE; | |
1901 | } | |
1902 | nsp32_write2(base, TRANSFER_CONTROL, transfer); | |
1903 | ||
1904 | /* | |
1905 | * restart AutoSCSI | |
1906 | * | |
1907 | * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ? | |
1908 | */ | |
1909 | command |= (CLEAR_CDB_FIFO_POINTER | | |
1910 | AUTO_COMMAND_PHASE | | |
1911 | AUTOSCSI_RESTART ); | |
1912 | nsp32_write2(base, COMMAND_CONTROL, command); | |
1913 | ||
1914 | nsp32_dbg(NSP32_DEBUG_RESTART, "exit"); | |
1915 | } | |
1916 | ||
1917 | ||
1918 | /* | |
1919 | * cannot run automatically message in occur | |
1920 | */ | |
1921 | static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt, | |
1922 | unsigned long irq_status, | |
1923 | unsigned short execph) | |
1924 | { | |
1925 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
1926 | unsigned int base = SCpnt->device->host->io_port; | |
1927 | unsigned char msg; | |
1928 | unsigned char msgtype; | |
1929 | unsigned char newlun; | |
1930 | unsigned short command = 0; | |
1931 | int msgclear = TRUE; | |
1932 | long new_sgtp; | |
1933 | int ret; | |
1934 | ||
1935 | /* | |
1936 | * read first message | |
1937 | * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure | |
1938 | * of Message-In have to be processed before sending back SCSI ACK. | |
1939 | */ | |
1940 | msg = nsp32_read1(base, SCSI_DATA_IN); | |
1941 | data->msginbuf[(unsigned char)data->msgin_len] = msg; | |
1942 | msgtype = data->msginbuf[0]; | |
1943 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, | |
1944 | "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x", | |
1945 | data->msgin_len, msg, msgtype); | |
1946 | ||
1947 | /* | |
1948 | * TODO: We need checking whether bus phase is message in? | |
1949 | */ | |
1950 | ||
1951 | /* | |
1952 | * assert SCSI ACK | |
1953 | */ | |
1954 | nsp32_sack_assert(data); | |
1955 | ||
1956 | /* | |
1957 | * processing IDENTIFY | |
1958 | */ | |
1959 | if (msgtype & 0x80) { | |
1960 | if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) { | |
1961 | /* Invalid (non reselect) phase */ | |
1962 | goto reject; | |
1963 | } | |
1964 | ||
1965 | newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */ | |
1966 | ret = nsp32_reselection(SCpnt, newlun); | |
1967 | if (ret == TRUE) { | |
1968 | goto restart; | |
1969 | } else { | |
1970 | goto reject; | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | /* | |
1975 | * processing messages except for IDENTIFY | |
1976 | * | |
1977 | * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO. | |
1978 | */ | |
1979 | switch (msgtype) { | |
1980 | /* | |
1981 | * 1-byte message | |
1982 | */ | |
1983 | case COMMAND_COMPLETE: | |
1984 | case DISCONNECT: | |
1985 | /* | |
1986 | * These messages should not be occurred. | |
1987 | * They should be processed on AutoSCSI sequencer. | |
1988 | */ | |
1989 | nsp32_msg(KERN_WARNING, | |
1990 | "unexpected message of AutoSCSI MsgIn: 0x%x", msg); | |
1991 | break; | |
1992 | ||
1993 | case RESTORE_POINTERS: | |
1994 | /* | |
1995 | * AutoMsgIn03 is disabled, and HBA gets this message. | |
1996 | */ | |
1997 | ||
1998 | if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) { | |
1999 | unsigned int s_sacklen; | |
2000 | ||
2001 | s_sacklen = nsp32_read4(base, SAVED_SACK_CNT); | |
2002 | if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) { | |
2003 | nsp32_adjust_busfree(SCpnt, s_sacklen); | |
2004 | } else { | |
2005 | /* No need to rewrite SGT */ | |
2006 | } | |
2007 | } | |
2008 | data->cur_lunt->msgin03 = FALSE; | |
2009 | ||
2010 | /* Update with the new value */ | |
2011 | ||
2012 | /* reset SACK/SavedACK counter (or ALL clear?) */ | |
2013 | nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); | |
2014 | ||
2015 | /* | |
2016 | * set new sg pointer | |
2017 | */ | |
2018 | new_sgtp = data->cur_lunt->sglun_paddr + | |
2019 | (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable)); | |
2020 | nsp32_write4(base, SGT_ADR, new_sgtp); | |
2021 | ||
2022 | break; | |
2023 | ||
2024 | case SAVE_POINTERS: | |
2025 | /* | |
2026 | * These messages should not be occurred. | |
2027 | * They should be processed on AutoSCSI sequencer. | |
2028 | */ | |
2029 | nsp32_msg (KERN_WARNING, | |
2030 | "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS"); | |
2031 | ||
2032 | break; | |
2033 | ||
2034 | case MESSAGE_REJECT: | |
2035 | /* If previous message_out is sending SDTR, and get | |
2036 | message_reject from target, SDTR negotiation is failed */ | |
2037 | if (data->cur_target->sync_flag & | |
2038 | (SDTR_INITIATOR | SDTR_TARGET)) { | |
2039 | /* | |
2040 | * Current target is negotiating SDTR, but it's | |
2041 | * failed. Fall back to async transfer mode, and set | |
2042 | * SDTR_DONE. | |
2043 | */ | |
2044 | nsp32_set_async(data, data->cur_target); | |
2045 | data->cur_target->sync_flag &= ~SDTR_INITIATOR; | |
2046 | data->cur_target->sync_flag |= SDTR_DONE; | |
2047 | ||
2048 | } | |
2049 | break; | |
2050 | ||
2051 | case LINKED_CMD_COMPLETE: | |
2052 | case LINKED_FLG_CMD_COMPLETE: | |
2053 | /* queue tag is not supported currently */ | |
2054 | nsp32_msg (KERN_WARNING, | |
2055 | "unsupported message: 0x%x", msgtype); | |
2056 | break; | |
2057 | ||
2058 | case INITIATE_RECOVERY: | |
2059 | /* staring ECA (Extended Contingent Allegiance) state. */ | |
2060 | /* This message is declined in SPI2 or later. */ | |
2061 | ||
2062 | goto reject; | |
2063 | ||
2064 | /* | |
2065 | * 2-byte message | |
2066 | */ | |
2067 | case SIMPLE_QUEUE_TAG: | |
2068 | case 0x23: | |
2069 | /* | |
2070 | * 0x23: Ignore_Wide_Residue is not declared in scsi.h. | |
2071 | * No support is needed. | |
2072 | */ | |
2073 | if (data->msgin_len >= 1) { | |
2074 | goto reject; | |
2075 | } | |
2076 | ||
2077 | /* current position is 1-byte of 2 byte */ | |
2078 | msgclear = FALSE; | |
2079 | ||
2080 | break; | |
2081 | ||
2082 | /* | |
2083 | * extended message | |
2084 | */ | |
2085 | case EXTENDED_MESSAGE: | |
2086 | if (data->msgin_len < 1) { | |
2087 | /* | |
2088 | * Current position does not reach 2-byte | |
2089 | * (2-byte is extended message length). | |
2090 | */ | |
2091 | msgclear = FALSE; | |
2092 | break; | |
2093 | } | |
2094 | ||
2095 | if ((data->msginbuf[1] + 1) > data->msgin_len) { | |
2096 | /* | |
2097 | * Current extended message has msginbuf[1] + 2 | |
2098 | * (msgin_len starts counting from 0, so buf[1] + 1). | |
2099 | * If current message position is not finished, | |
2100 | * continue receiving message. | |
2101 | */ | |
2102 | msgclear = FALSE; | |
2103 | break; | |
2104 | } | |
2105 | ||
2106 | /* | |
2107 | * Reach here means regular length of each type of | |
2108 | * extended messages. | |
2109 | */ | |
2110 | switch (data->msginbuf[2]) { | |
2111 | case EXTENDED_MODIFY_DATA_POINTER: | |
2112 | /* TODO */ | |
2113 | goto reject; /* not implemented yet */ | |
2114 | break; | |
2115 | ||
2116 | case EXTENDED_SDTR: | |
2117 | /* | |
2118 | * Exchange this message between initiator and target. | |
2119 | */ | |
2120 | if (data->msgin_len != EXTENDED_SDTR_LEN + 1) { | |
2121 | /* | |
2122 | * received inappropriate message. | |
2123 | */ | |
2124 | goto reject; | |
2125 | break; | |
2126 | } | |
2127 | ||
2128 | nsp32_analyze_sdtr(SCpnt); | |
2129 | ||
2130 | break; | |
2131 | ||
2132 | case EXTENDED_EXTENDED_IDENTIFY: | |
2133 | /* SCSI-I only, not supported. */ | |
2134 | goto reject; /* not implemented yet */ | |
2135 | ||
2136 | break; | |
2137 | ||
2138 | case EXTENDED_WDTR: | |
2139 | goto reject; /* not implemented yet */ | |
2140 | ||
2141 | break; | |
2142 | ||
2143 | default: | |
2144 | goto reject; | |
2145 | } | |
2146 | break; | |
2147 | ||
2148 | default: | |
2149 | goto reject; | |
2150 | } | |
2151 | ||
2152 | restart: | |
2153 | if (msgclear == TRUE) { | |
2154 | data->msgin_len = 0; | |
2155 | ||
2156 | /* | |
2157 | * If restarting AutoSCSI, but there are some message to out | |
2158 | * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0 | |
2159 | * (MV_VALID = 0). When commandcontrol is written with | |
2160 | * AutoSCSI restart, at the same time MsgOutOccur should be | |
2161 | * happened (however, such situation is really possible...?). | |
2162 | */ | |
2163 | if (data->msgout_len > 0) { | |
2164 | nsp32_write4(base, SCSI_MSG_OUT, 0); | |
2165 | command |= AUTO_ATN; | |
2166 | } | |
2167 | ||
2168 | /* | |
2169 | * restart AutoSCSI | |
2170 | * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed. | |
2171 | */ | |
2172 | command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02); | |
2173 | ||
2174 | /* | |
2175 | * If current msgin03 is TRUE, then flag on. | |
2176 | */ | |
2177 | if (data->cur_lunt->msgin03 == TRUE) { | |
2178 | command |= AUTO_MSGIN_03; | |
2179 | } | |
2180 | data->cur_lunt->msgin03 = FALSE; | |
2181 | } else { | |
2182 | data->msgin_len++; | |
2183 | } | |
2184 | ||
2185 | /* | |
2186 | * restart AutoSCSI | |
2187 | */ | |
2188 | nsp32_restart_autoscsi(SCpnt, command); | |
2189 | ||
2190 | /* | |
2191 | * wait SCSI REQ negate for REQ-ACK handshake | |
2192 | */ | |
2193 | nsp32_wait_req(data, NEGATE); | |
2194 | ||
2195 | /* | |
2196 | * negate SCSI ACK | |
2197 | */ | |
2198 | nsp32_sack_negate(data); | |
2199 | ||
2200 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit"); | |
2201 | ||
2202 | return; | |
2203 | ||
2204 | reject: | |
2205 | nsp32_msg(KERN_WARNING, | |
2206 | "invalid or unsupported MessageIn, rejected. " | |
2207 | "current msg: 0x%x (len: 0x%x), processing msg: 0x%x", | |
2208 | msg, data->msgin_len, msgtype); | |
2209 | nsp32_build_reject(SCpnt); | |
2210 | data->msgin_len = 0; | |
2211 | ||
2212 | goto restart; | |
2213 | } | |
2214 | ||
2215 | /* | |
2216 | * | |
2217 | */ | |
2218 | static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt) | |
2219 | { | |
2220 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
2221 | nsp32_target *target = data->cur_target; | |
2222 | nsp32_sync_table *synct; | |
2223 | unsigned char get_period = data->msginbuf[3]; | |
2224 | unsigned char get_offset = data->msginbuf[4]; | |
2225 | int entry; | |
2226 | int syncnum; | |
2227 | ||
2228 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter"); | |
2229 | ||
2230 | synct = data->synct; | |
2231 | syncnum = data->syncnum; | |
2232 | ||
2233 | /* | |
2234 | * If this inititor sent the SDTR message, then target responds SDTR, | |
2235 | * initiator SYNCREG, ACKWIDTH from SDTR parameter. | |
2236 | * Messages are not appropriate, then send back reject message. | |
2237 | * If initiator did not send the SDTR, but target sends SDTR, | |
2238 | * initiator calculator the appropriate parameter and send back SDTR. | |
2239 | */ | |
2240 | if (target->sync_flag & SDTR_INITIATOR) { | |
2241 | /* | |
2242 | * Initiator sent SDTR, the target responds and | |
2243 | * send back negotiation SDTR. | |
2244 | */ | |
2245 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR"); | |
2246 | ||
2247 | target->sync_flag &= ~SDTR_INITIATOR; | |
2248 | target->sync_flag |= SDTR_DONE; | |
2249 | ||
2250 | /* | |
2251 | * offset: | |
2252 | */ | |
2253 | if (get_offset > SYNC_OFFSET) { | |
2254 | /* | |
2255 | * Negotiation is failed, the target send back | |
2256 | * unexpected offset value. | |
2257 | */ | |
2258 | goto reject; | |
2259 | } | |
2260 | ||
2261 | if (get_offset == ASYNC_OFFSET) { | |
2262 | /* | |
2263 | * Negotiation is succeeded, the target want | |
2264 | * to fall back into asynchronous transfer mode. | |
2265 | */ | |
2266 | goto async; | |
2267 | } | |
2268 | ||
2269 | /* | |
2270 | * period: | |
2271 | * Check whether sync period is too short. If too short, | |
2272 | * fall back to async mode. If it's ok, then investigate | |
2273 | * the received sync period. If sync period is acceptable | |
2274 | * between sync table start_period and end_period, then | |
2275 | * set this I_T nexus as sent offset and period. | |
2276 | * If it's not acceptable, send back reject and fall back | |
2277 | * to async mode. | |
2278 | */ | |
2279 | if (get_period < data->synct[0].period_num) { | |
2280 | /* | |
2281 | * Negotiation is failed, the target send back | |
2282 | * unexpected period value. | |
2283 | */ | |
2284 | goto reject; | |
2285 | } | |
2286 | ||
2287 | entry = nsp32_search_period_entry(data, target, get_period); | |
2288 | ||
2289 | if (entry < 0) { | |
2290 | /* | |
2291 | * Target want to use long period which is not | |
2292 | * acceptable NinjaSCSI-32Bi/UDE. | |
2293 | */ | |
2294 | goto reject; | |
2295 | } | |
2296 | ||
2297 | /* | |
2298 | * Set new sync table and offset in this I_T nexus. | |
2299 | */ | |
2300 | nsp32_set_sync_entry(data, target, entry, get_offset); | |
2301 | } else { | |
2302 | /* Target send SDTR to initiator. */ | |
2303 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR"); | |
2304 | ||
2305 | target->sync_flag |= SDTR_INITIATOR; | |
2306 | ||
2307 | /* offset: */ | |
2308 | if (get_offset > SYNC_OFFSET) { | |
2309 | /* send back as SYNC_OFFSET */ | |
2310 | get_offset = SYNC_OFFSET; | |
2311 | } | |
2312 | ||
2313 | /* period: */ | |
2314 | if (get_period < data->synct[0].period_num) { | |
2315 | get_period = data->synct[0].period_num; | |
2316 | } | |
2317 | ||
2318 | entry = nsp32_search_period_entry(data, target, get_period); | |
2319 | ||
2320 | if (get_offset == ASYNC_OFFSET || entry < 0) { | |
2321 | nsp32_set_async(data, target); | |
2322 | nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET); | |
2323 | } else { | |
2324 | nsp32_set_sync_entry(data, target, entry, get_offset); | |
2325 | nsp32_build_sdtr(SCpnt, get_period, get_offset); | |
2326 | } | |
2327 | } | |
2328 | ||
2329 | target->period = get_period; | |
2330 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit"); | |
2331 | return; | |
2332 | ||
2333 | reject: | |
2334 | /* | |
2335 | * If the current message is unacceptable, send back to the target | |
2336 | * with reject message. | |
2337 | */ | |
2338 | nsp32_build_reject(SCpnt); | |
2339 | ||
2340 | async: | |
2341 | nsp32_set_async(data, target); /* set as ASYNC transfer mode */ | |
2342 | ||
2343 | target->period = 0; | |
2344 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async"); | |
2345 | return; | |
2346 | } | |
2347 | ||
2348 | ||
2349 | /* | |
2350 | * Search config entry number matched in sync_table from given | |
2351 | * target and speed period value. If failed to search, return negative value. | |
2352 | */ | |
2353 | static int nsp32_search_period_entry(nsp32_hw_data *data, | |
2354 | nsp32_target *target, | |
2355 | unsigned char period) | |
2356 | { | |
2357 | int i; | |
2358 | ||
2359 | if (target->limit_entry >= data->syncnum) { | |
2360 | nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!"); | |
2361 | target->limit_entry = 0; | |
2362 | } | |
2363 | ||
2364 | for (i = target->limit_entry; i < data->syncnum; i++) { | |
2365 | if (period >= data->synct[i].start_period && | |
2366 | period <= data->synct[i].end_period) { | |
2367 | break; | |
2368 | } | |
2369 | } | |
2370 | ||
2371 | /* | |
2372 | * Check given period value is over the sync_table value. | |
2373 | * If so, return max value. | |
2374 | */ | |
2375 | if (i == data->syncnum) { | |
2376 | i = -1; | |
2377 | } | |
2378 | ||
2379 | return i; | |
2380 | } | |
2381 | ||
2382 | ||
2383 | /* | |
2384 | * target <-> initiator use ASYNC transfer | |
2385 | */ | |
2386 | static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target) | |
2387 | { | |
2388 | unsigned char period = data->synct[target->limit_entry].period_num; | |
2389 | ||
2390 | target->offset = ASYNC_OFFSET; | |
2391 | target->period = 0; | |
2392 | target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET); | |
2393 | target->ackwidth = 0; | |
2394 | target->sample_reg = 0; | |
2395 | ||
2396 | nsp32_dbg(NSP32_DEBUG_SYNC, "set async"); | |
2397 | } | |
2398 | ||
2399 | ||
2400 | /* | |
2401 | * target <-> initiator use maximum SYNC transfer | |
2402 | */ | |
2403 | static void nsp32_set_max_sync(nsp32_hw_data *data, | |
2404 | nsp32_target *target, | |
2405 | unsigned char *period, | |
2406 | unsigned char *offset) | |
2407 | { | |
2408 | unsigned char period_num, ackwidth; | |
2409 | ||
2410 | period_num = data->synct[target->limit_entry].period_num; | |
2411 | *period = data->synct[target->limit_entry].start_period; | |
2412 | ackwidth = data->synct[target->limit_entry].ackwidth; | |
2413 | *offset = SYNC_OFFSET; | |
2414 | ||
2415 | target->syncreg = TO_SYNCREG(period_num, *offset); | |
2416 | target->ackwidth = ackwidth; | |
2417 | target->offset = *offset; | |
2418 | target->sample_reg = 0; /* disable SREQ sampling */ | |
2419 | } | |
2420 | ||
2421 | ||
2422 | /* | |
2423 | * target <-> initiator use entry number speed | |
2424 | */ | |
2425 | static void nsp32_set_sync_entry(nsp32_hw_data *data, | |
2426 | nsp32_target *target, | |
2427 | int entry, | |
2428 | unsigned char offset) | |
2429 | { | |
2430 | unsigned char period, ackwidth, sample_rate; | |
2431 | ||
2432 | period = data->synct[entry].period_num; | |
2433 | ackwidth = data->synct[entry].ackwidth; | |
1da177e4 LT |
2434 | sample_rate = data->synct[entry].sample_rate; |
2435 | ||
2436 | target->syncreg = TO_SYNCREG(period, offset); | |
2437 | target->ackwidth = ackwidth; | |
2438 | target->offset = offset; | |
2439 | target->sample_reg = sample_rate | SAMPLING_ENABLE; | |
2440 | ||
2441 | nsp32_dbg(NSP32_DEBUG_SYNC, "set sync"); | |
2442 | } | |
2443 | ||
2444 | ||
2445 | /* | |
2446 | * It waits until SCSI REQ becomes assertion or negation state. | |
2447 | * | |
2448 | * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then | |
2449 | * connected target responds SCSI REQ negation. We have to wait | |
2450 | * SCSI REQ becomes negation in order to negate SCSI ACK signal for | |
2451 | * REQ-ACK handshake. | |
2452 | */ | |
2453 | static void nsp32_wait_req(nsp32_hw_data *data, int state) | |
2454 | { | |
2455 | unsigned int base = data->BaseAddress; | |
2456 | int wait_time = 0; | |
2457 | unsigned char bus, req_bit; | |
2458 | ||
2459 | if (!((state == ASSERT) || (state == NEGATE))) { | |
2460 | nsp32_msg(KERN_ERR, "unknown state designation"); | |
2461 | } | |
2462 | /* REQ is BIT(5) */ | |
2463 | req_bit = (state == ASSERT ? BUSMON_REQ : 0); | |
2464 | ||
2465 | do { | |
2466 | bus = nsp32_read1(base, SCSI_BUS_MONITOR); | |
2467 | if ((bus & BUSMON_REQ) == req_bit) { | |
2468 | nsp32_dbg(NSP32_DEBUG_WAIT, | |
2469 | "wait_time: %d", wait_time); | |
2470 | return; | |
2471 | } | |
2472 | udelay(1); | |
2473 | wait_time++; | |
2474 | } while (wait_time < REQSACK_TIMEOUT_TIME); | |
2475 | ||
2476 | nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit); | |
2477 | } | |
2478 | ||
2479 | /* | |
2480 | * It waits until SCSI SACK becomes assertion or negation state. | |
2481 | */ | |
2482 | static void nsp32_wait_sack(nsp32_hw_data *data, int state) | |
2483 | { | |
2484 | unsigned int base = data->BaseAddress; | |
2485 | int wait_time = 0; | |
2486 | unsigned char bus, ack_bit; | |
2487 | ||
2488 | if (!((state == ASSERT) || (state == NEGATE))) { | |
2489 | nsp32_msg(KERN_ERR, "unknown state designation"); | |
2490 | } | |
2491 | /* ACK is BIT(4) */ | |
2492 | ack_bit = (state == ASSERT ? BUSMON_ACK : 0); | |
2493 | ||
2494 | do { | |
2495 | bus = nsp32_read1(base, SCSI_BUS_MONITOR); | |
2496 | if ((bus & BUSMON_ACK) == ack_bit) { | |
2497 | nsp32_dbg(NSP32_DEBUG_WAIT, | |
2498 | "wait_time: %d", wait_time); | |
2499 | return; | |
2500 | } | |
2501 | udelay(1); | |
2502 | wait_time++; | |
2503 | } while (wait_time < REQSACK_TIMEOUT_TIME); | |
2504 | ||
2505 | nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit); | |
2506 | } | |
2507 | ||
2508 | /* | |
2509 | * assert SCSI ACK | |
2510 | * | |
2511 | * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1. | |
2512 | */ | |
2513 | static void nsp32_sack_assert(nsp32_hw_data *data) | |
2514 | { | |
2515 | unsigned int base = data->BaseAddress; | |
2516 | unsigned char busctrl; | |
2517 | ||
2518 | busctrl = nsp32_read1(base, SCSI_BUS_CONTROL); | |
2519 | busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB); | |
2520 | nsp32_write1(base, SCSI_BUS_CONTROL, busctrl); | |
2521 | } | |
2522 | ||
2523 | /* | |
2524 | * negate SCSI ACK | |
2525 | */ | |
2526 | static void nsp32_sack_negate(nsp32_hw_data *data) | |
2527 | { | |
2528 | unsigned int base = data->BaseAddress; | |
2529 | unsigned char busctrl; | |
2530 | ||
2531 | busctrl = nsp32_read1(base, SCSI_BUS_CONTROL); | |
2532 | busctrl &= ~BUSCTL_ACK; | |
2533 | nsp32_write1(base, SCSI_BUS_CONTROL, busctrl); | |
2534 | } | |
2535 | ||
2536 | ||
2537 | ||
2538 | /* | |
2539 | * Note: n_io_port is defined as 0x7f because I/O register port is | |
2540 | * assigned as: | |
2541 | * 0x800-0x8ff: memory mapped I/O port | |
2542 | * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly) | |
2543 | * 0xc00-0xfff: CardBus status registers | |
2544 | */ | |
1da177e4 | 2545 | static int nsp32_detect(struct pci_dev *pdev) |
1da177e4 LT |
2546 | { |
2547 | struct Scsi_Host *host; /* registered host structure */ | |
2548 | struct resource *res; | |
2549 | nsp32_hw_data *data; | |
2550 | int ret; | |
2551 | int i, j; | |
2552 | ||
2553 | nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); | |
2554 | ||
2555 | /* | |
2556 | * register this HBA as SCSI device | |
2557 | */ | |
1da177e4 | 2558 | host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data)); |
1da177e4 LT |
2559 | if (host == NULL) { |
2560 | nsp32_msg (KERN_ERR, "failed to scsi register"); | |
2561 | goto err; | |
2562 | } | |
2563 | ||
2564 | /* | |
2565 | * set nsp32_hw_data | |
2566 | */ | |
2567 | data = (nsp32_hw_data *)host->hostdata; | |
2568 | ||
2569 | memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data)); | |
2570 | ||
2571 | host->irq = data->IrqNumber; | |
2572 | host->io_port = data->BaseAddress; | |
2573 | host->unique_id = data->BaseAddress; | |
2574 | host->n_io_port = data->NumAddress; | |
2575 | host->base = (unsigned long)data->MmioAddress; | |
1da177e4 LT |
2576 | |
2577 | data->Host = host; | |
2578 | spin_lock_init(&(data->Lock)); | |
2579 | ||
2580 | data->cur_lunt = NULL; | |
2581 | data->cur_target = NULL; | |
2582 | ||
2583 | /* | |
2584 | * Bus master transfer mode is supported currently. | |
2585 | */ | |
2586 | data->trans_method = NSP32_TRANSFER_BUSMASTER; | |
2587 | ||
2588 | /* | |
2589 | * Set clock div, CLOCK_4 (HBA has own external clock, and | |
2590 | * dividing * 100ns/4). | |
2591 | * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet. | |
2592 | */ | |
2593 | data->clock = CLOCK_4; | |
2594 | ||
2595 | /* | |
2596 | * Select appropriate nsp32_sync_table and set I_CLOCKDIV. | |
2597 | */ | |
2598 | switch (data->clock) { | |
2599 | case CLOCK_4: | |
2600 | /* If data->clock is CLOCK_4, then select 40M sync table. */ | |
2601 | data->synct = nsp32_sync_table_40M; | |
2602 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M); | |
2603 | break; | |
2604 | case CLOCK_2: | |
2605 | /* If data->clock is CLOCK_2, then select 20M sync table. */ | |
2606 | data->synct = nsp32_sync_table_20M; | |
2607 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M); | |
2608 | break; | |
2609 | case PCICLK: | |
2610 | /* If data->clock is PCICLK, then select pci sync table. */ | |
2611 | data->synct = nsp32_sync_table_pci; | |
2612 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci); | |
2613 | break; | |
2614 | default: | |
2615 | nsp32_msg(KERN_WARNING, | |
2616 | "Invalid clock div is selected, set CLOCK_4."); | |
2617 | /* Use default value CLOCK_4 */ | |
2618 | data->clock = CLOCK_4; | |
2619 | data->synct = nsp32_sync_table_40M; | |
2620 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M); | |
2621 | } | |
2622 | ||
2623 | /* | |
2624 | * setup nsp32_lunt | |
2625 | */ | |
2626 | ||
2627 | /* | |
2628 | * setup DMA | |
2629 | */ | |
03676e1d | 2630 | if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) != 0) { |
1da177e4 LT |
2631 | nsp32_msg (KERN_ERR, "failed to set PCI DMA mask"); |
2632 | goto scsi_unregister; | |
2633 | } | |
2634 | ||
2635 | /* | |
2636 | * allocate autoparam DMA resource. | |
2637 | */ | |
03676e1d CH |
2638 | data->autoparam = dma_alloc_coherent(&pdev->dev, |
2639 | sizeof(nsp32_autoparam), &(data->auto_paddr), | |
2640 | GFP_KERNEL); | |
1da177e4 LT |
2641 | if (data->autoparam == NULL) { |
2642 | nsp32_msg(KERN_ERR, "failed to allocate DMA memory"); | |
2643 | goto scsi_unregister; | |
2644 | } | |
2645 | ||
2646 | /* | |
2647 | * allocate scatter-gather DMA resource. | |
2648 | */ | |
03676e1d CH |
2649 | data->sg_list = dma_alloc_coherent(&pdev->dev, NSP32_SG_TABLE_SIZE, |
2650 | &data->sg_paddr, GFP_KERNEL); | |
1da177e4 LT |
2651 | if (data->sg_list == NULL) { |
2652 | nsp32_msg(KERN_ERR, "failed to allocate DMA memory"); | |
2653 | goto free_autoparam; | |
2654 | } | |
2655 | ||
2656 | for (i = 0; i < ARRAY_SIZE(data->lunt); i++) { | |
2657 | for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) { | |
2658 | int offset = i * ARRAY_SIZE(data->lunt[0]) + j; | |
2659 | nsp32_lunt tmp = { | |
2660 | .SCpnt = NULL, | |
2661 | .save_datp = 0, | |
2662 | .msgin03 = FALSE, | |
2663 | .sg_num = 0, | |
2664 | .cur_entry = 0, | |
2665 | .sglun = &(data->sg_list[offset]), | |
2666 | .sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)), | |
2667 | }; | |
2668 | ||
2669 | data->lunt[i][j] = tmp; | |
2670 | } | |
2671 | } | |
2672 | ||
2673 | /* | |
2674 | * setup target | |
2675 | */ | |
2676 | for (i = 0; i < ARRAY_SIZE(data->target); i++) { | |
2677 | nsp32_target *target = &(data->target[i]); | |
2678 | ||
2679 | target->limit_entry = 0; | |
2680 | target->sync_flag = 0; | |
2681 | nsp32_set_async(data, target); | |
2682 | } | |
2683 | ||
2684 | /* | |
2685 | * EEPROM check | |
2686 | */ | |
2687 | ret = nsp32_getprom_param(data); | |
2688 | if (ret == FALSE) { | |
2689 | data->resettime = 3; /* default 3 */ | |
2690 | } | |
2691 | ||
2692 | /* | |
2693 | * setup HBA | |
2694 | */ | |
2695 | nsp32hw_init(data); | |
2696 | ||
2697 | snprintf(data->info_str, sizeof(data->info_str), | |
2698 | "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x", | |
2699 | host->irq, host->io_port, host->n_io_port); | |
2700 | ||
2701 | /* | |
2702 | * SCSI bus reset | |
2703 | * | |
2704 | * Note: It's important to reset SCSI bus in initialization phase. | |
2705 | * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when | |
2706 | * system is coming up, so SCSI devices connected to HBA is set as | |
2707 | * un-asynchronous mode. It brings the merit that this HBA is | |
2708 | * ready to start synchronous transfer without any preparation, | |
2709 | * but we are difficult to control transfer speed. In addition, | |
2710 | * it prevents device transfer speed from effecting EEPROM start-up | |
2711 | * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as | |
2712 | * Auto Mode, then FAST-10M is selected when SCSI devices are | |
2713 | * connected same or more than 4 devices. It should be avoided | |
2714 | * depending on this specification. Thus, resetting the SCSI bus | |
2715 | * restores all connected SCSI devices to asynchronous mode, then | |
2716 | * this driver set SDTR safely later, and we can control all SCSI | |
2717 | * device transfer mode. | |
2718 | */ | |
2719 | nsp32_do_bus_reset(data); | |
2720 | ||
c4e00fac | 2721 | ret = request_irq(host->irq, do_nsp32_isr, IRQF_SHARED, "nsp32", data); |
1da177e4 LT |
2722 | if (ret < 0) { |
2723 | nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 " | |
2724 | "SCSI PCI controller. Interrupt: %d", host->irq); | |
2725 | goto free_sg_list; | |
2726 | } | |
2727 | ||
2728 | /* | |
2729 | * PCI IO register | |
2730 | */ | |
2731 | res = request_region(host->io_port, host->n_io_port, "nsp32"); | |
2732 | if (res == NULL) { | |
2733 | nsp32_msg(KERN_ERR, | |
2734 | "I/O region 0x%lx+0x%lx is already used", | |
2735 | data->BaseAddress, data->NumAddress); | |
2736 | goto free_irq; | |
2737 | } | |
2738 | ||
6a31a8a6 | 2739 | ret = scsi_add_host(host, &pdev->dev); |
3e7196cf GM |
2740 | if (ret) { |
2741 | nsp32_msg(KERN_ERR, "failed to add scsi host"); | |
2742 | goto free_region; | |
2743 | } | |
1da177e4 | 2744 | scsi_scan_host(host); |
6a31a8a6 AB |
2745 | pci_set_drvdata(pdev, host); |
2746 | return 0; | |
1da177e4 | 2747 | |
3e7196cf GM |
2748 | free_region: |
2749 | release_region(host->io_port, host->n_io_port); | |
2750 | ||
1da177e4 LT |
2751 | free_irq: |
2752 | free_irq(host->irq, data); | |
2753 | ||
2754 | free_sg_list: | |
03676e1d | 2755 | dma_free_coherent(&pdev->dev, NSP32_SG_TABLE_SIZE, |
1da177e4 LT |
2756 | data->sg_list, data->sg_paddr); |
2757 | ||
2758 | free_autoparam: | |
03676e1d | 2759 | dma_free_coherent(&pdev->dev, sizeof(nsp32_autoparam), |
1da177e4 LT |
2760 | data->autoparam, data->auto_paddr); |
2761 | ||
2762 | scsi_unregister: | |
2763 | scsi_host_put(host); | |
2764 | ||
2765 | err: | |
6a31a8a6 | 2766 | return 1; |
1da177e4 | 2767 | } |
1da177e4 LT |
2768 | |
2769 | static int nsp32_release(struct Scsi_Host *host) | |
2770 | { | |
2771 | nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; | |
2772 | ||
2773 | if (data->autoparam) { | |
03676e1d | 2774 | dma_free_coherent(&data->Pci->dev, sizeof(nsp32_autoparam), |
1da177e4 LT |
2775 | data->autoparam, data->auto_paddr); |
2776 | } | |
2777 | ||
2778 | if (data->sg_list) { | |
03676e1d | 2779 | dma_free_coherent(&data->Pci->dev, NSP32_SG_TABLE_SIZE, |
1da177e4 LT |
2780 | data->sg_list, data->sg_paddr); |
2781 | } | |
2782 | ||
2783 | if (host->irq) { | |
2784 | free_irq(host->irq, data); | |
2785 | } | |
2786 | ||
2787 | if (host->io_port && host->n_io_port) { | |
2788 | release_region(host->io_port, host->n_io_port); | |
2789 | } | |
2790 | ||
2791 | if (data->MmioAddress) { | |
2792 | iounmap(data->MmioAddress); | |
2793 | } | |
2794 | ||
2795 | return 0; | |
2796 | } | |
2797 | ||
2798 | static const char *nsp32_info(struct Scsi_Host *shpnt) | |
2799 | { | |
2800 | nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata; | |
2801 | ||
2802 | return data->info_str; | |
2803 | } | |
2804 | ||
2805 | ||
2806 | /**************************************************************************** | |
2807 | * error handler | |
2808 | */ | |
2809 | static int nsp32_eh_abort(struct scsi_cmnd *SCpnt) | |
2810 | { | |
2811 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; | |
2812 | unsigned int base = SCpnt->device->host->io_port; | |
2813 | ||
2814 | nsp32_msg(KERN_WARNING, "abort"); | |
2815 | ||
2816 | if (data->cur_lunt->SCpnt == NULL) { | |
2817 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed"); | |
2818 | return FAILED; | |
2819 | } | |
2820 | ||
2821 | if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) { | |
2822 | /* reset SDTR negotiation */ | |
2823 | data->cur_target->sync_flag = 0; | |
2824 | nsp32_set_async(data, data->cur_target); | |
2825 | } | |
2826 | ||
2827 | nsp32_write2(base, TRANSFER_CONTROL, 0); | |
2828 | nsp32_write2(base, BM_CNT, 0); | |
2829 | ||
2830 | SCpnt->result = DID_ABORT << 16; | |
2831 | nsp32_scsi_done(SCpnt); | |
2832 | ||
2833 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success"); | |
2834 | return SUCCESS; | |
2835 | } | |
2836 | ||
1da177e4 LT |
2837 | static void nsp32_do_bus_reset(nsp32_hw_data *data) |
2838 | { | |
2839 | unsigned int base = data->BaseAddress; | |
2840 | unsigned short intrdat; | |
2841 | int i; | |
2842 | ||
2843 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "in"); | |
2844 | ||
2845 | /* | |
2846 | * stop all transfer | |
2847 | * clear TRANSFERCONTROL_BM_START | |
2848 | * clear counter | |
2849 | */ | |
2850 | nsp32_write2(base, TRANSFER_CONTROL, 0); | |
2851 | nsp32_write4(base, BM_CNT, 0); | |
2852 | nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); | |
2853 | ||
2854 | /* | |
2855 | * fall back to asynchronous transfer mode | |
2856 | * initialize SDTR negotiation flag | |
2857 | */ | |
2858 | for (i = 0; i < ARRAY_SIZE(data->target); i++) { | |
2859 | nsp32_target *target = &data->target[i]; | |
2860 | ||
2861 | target->sync_flag = 0; | |
2862 | nsp32_set_async(data, target); | |
2863 | } | |
2864 | ||
2865 | /* | |
2866 | * reset SCSI bus | |
2867 | */ | |
2868 | nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST); | |
b497ceb9 | 2869 | mdelay(RESET_HOLD_TIME / 1000); |
1da177e4 LT |
2870 | nsp32_write1(base, SCSI_BUS_CONTROL, 0); |
2871 | for(i = 0; i < 5; i++) { | |
2872 | intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */ | |
2873 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat); | |
2874 | } | |
2875 | ||
2876 | data->CurrentSC = NULL; | |
2877 | } | |
2878 | ||
2879 | static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt) | |
2880 | { | |
2881 | struct Scsi_Host *host = SCpnt->device->host; | |
2882 | unsigned int base = SCpnt->device->host->io_port; | |
2883 | nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; | |
2884 | ||
2885 | nsp32_msg(KERN_INFO, "Host Reset"); | |
2886 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt); | |
2887 | ||
df0ae249 JG |
2888 | spin_lock_irq(SCpnt->device->host->host_lock); |
2889 | ||
1da177e4 LT |
2890 | nsp32hw_init(data); |
2891 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); | |
2892 | nsp32_do_bus_reset(data); | |
2893 | nsp32_write2(base, IRQ_CONTROL, 0); | |
2894 | ||
df0ae249 | 2895 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
2896 | return SUCCESS; /* Host reset is succeeded at any time. */ |
2897 | } | |
2898 | ||
2899 | ||
2900 | /************************************************************************** | |
2901 | * EEPROM handler | |
2902 | */ | |
2903 | ||
2904 | /* | |
2905 | * getting EEPROM parameter | |
2906 | */ | |
2907 | static int nsp32_getprom_param(nsp32_hw_data *data) | |
2908 | { | |
2909 | int vendor = data->pci_devid->vendor; | |
2910 | int device = data->pci_devid->device; | |
2911 | int ret, val, i; | |
2912 | ||
2913 | /* | |
2914 | * EEPROM checking. | |
2915 | */ | |
2916 | ret = nsp32_prom_read(data, 0x7e); | |
2917 | if (ret != 0x55) { | |
2918 | nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret); | |
2919 | return FALSE; | |
2920 | } | |
2921 | ret = nsp32_prom_read(data, 0x7f); | |
2922 | if (ret != 0xaa) { | |
2923 | nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret); | |
2924 | return FALSE; | |
2925 | } | |
2926 | ||
2927 | /* | |
2928 | * check EEPROM type | |
2929 | */ | |
2930 | if (vendor == PCI_VENDOR_ID_WORKBIT && | |
2931 | device == PCI_DEVICE_ID_WORKBIT_STANDARD) { | |
2932 | ret = nsp32_getprom_c16(data); | |
2933 | } else if (vendor == PCI_VENDOR_ID_WORKBIT && | |
2934 | device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) { | |
2935 | ret = nsp32_getprom_at24(data); | |
2936 | } else if (vendor == PCI_VENDOR_ID_WORKBIT && | |
2937 | device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) { | |
2938 | ret = nsp32_getprom_at24(data); | |
2939 | } else { | |
2940 | nsp32_msg(KERN_WARNING, "Unknown EEPROM"); | |
2941 | ret = FALSE; | |
2942 | } | |
2943 | ||
2944 | /* for debug : SPROM data full checking */ | |
2945 | for (i = 0; i <= 0x1f; i++) { | |
2946 | val = nsp32_prom_read(data, i); | |
2947 | nsp32_dbg(NSP32_DEBUG_EEPROM, | |
2948 | "rom address 0x%x : 0x%x", i, val); | |
2949 | } | |
2950 | ||
2951 | return ret; | |
2952 | } | |
2953 | ||
2954 | ||
2955 | /* | |
2956 | * AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map: | |
2957 | * | |
2958 | * ROMADDR | |
2959 | * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6) | |
2960 | * Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M | |
2961 | * 0x07 : HBA Synchronous Transfer Period | |
2962 | * Value 0: AutoSync, 1: Manual Setting | |
2963 | * 0x08 - 0x0f : Not Used? (0x0) | |
2964 | * 0x10 : Bus Termination | |
2965 | * Value 0: Auto[ON], 1: ON, 2: OFF | |
2966 | * 0x11 : Not Used? (0) | |
2967 | * 0x12 : Bus Reset Delay Time (0x03) | |
2968 | * 0x13 : Bootable CD Support | |
2969 | * Value 0: Disable, 1: Enable | |
2970 | * 0x14 : Device Scan | |
2971 | * Bit 7 6 5 4 3 2 1 0 | |
2972 | * | <-----------------> | |
2973 | * | SCSI ID: Value 0: Skip, 1: YES | |
2974 | * |-> Value 0: ALL scan, Value 1: Manual | |
2975 | * 0x15 - 0x1b : Not Used? (0) | |
2976 | * 0x1c : Constant? (0x01) (clock div?) | |
2977 | * 0x1d - 0x7c : Not Used (0xff) | |
2978 | * 0x7d : Not Used? (0xff) | |
2979 | * 0x7e : Constant (0x55), Validity signature | |
2980 | * 0x7f : Constant (0xaa), Validity signature | |
2981 | */ | |
2982 | static int nsp32_getprom_at24(nsp32_hw_data *data) | |
2983 | { | |
2984 | int ret, i; | |
2985 | int auto_sync; | |
2986 | nsp32_target *target; | |
2987 | int entry; | |
2988 | ||
2989 | /* | |
2990 | * Reset time which is designated by EEPROM. | |
2991 | * | |
2992 | * TODO: Not used yet. | |
2993 | */ | |
2994 | data->resettime = nsp32_prom_read(data, 0x12); | |
2995 | ||
2996 | /* | |
2997 | * HBA Synchronous Transfer Period | |
2998 | * | |
2999 | * Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says | |
3000 | * that if auto_sync is 0 (auto), and connected SCSI devices are | |
3001 | * same or lower than 3, then transfer speed is set as ULTRA-20M. | |
3002 | * On the contrary if connected SCSI devices are same or higher | |
3003 | * than 4, then transfer speed is set as FAST-10M. | |
3004 | * | |
3005 | * I break this rule. The number of connected SCSI devices are | |
3006 | * only ignored. If auto_sync is 0 (auto), then transfer speed is | |
3007 | * forced as ULTRA-20M. | |
3008 | */ | |
3009 | ret = nsp32_prom_read(data, 0x07); | |
3010 | switch (ret) { | |
3011 | case 0: | |
3012 | auto_sync = TRUE; | |
3013 | break; | |
3014 | case 1: | |
3015 | auto_sync = FALSE; | |
3016 | break; | |
3017 | default: | |
3018 | nsp32_msg(KERN_WARNING, | |
3019 | "Unsupported Auto Sync mode. Fall back to manual mode."); | |
3020 | auto_sync = TRUE; | |
3021 | } | |
3022 | ||
3023 | if (trans_mode == ULTRA20M_MODE) { | |
3024 | auto_sync = TRUE; | |
3025 | } | |
3026 | ||
3027 | /* | |
3028 | * each device Synchronous Transfer Period | |
3029 | */ | |
3030 | for (i = 0; i < NSP32_HOST_SCSIID; i++) { | |
3031 | target = &data->target[i]; | |
3032 | if (auto_sync == TRUE) { | |
3033 | target->limit_entry = 0; /* set as ULTRA20M */ | |
3034 | } else { | |
3035 | ret = nsp32_prom_read(data, i); | |
3036 | entry = nsp32_search_period_entry(data, target, ret); | |
3037 | if (entry < 0) { | |
3038 | /* search failed... set maximum speed */ | |
3039 | entry = 0; | |
3040 | } | |
3041 | target->limit_entry = entry; | |
3042 | } | |
3043 | } | |
3044 | ||
3045 | return TRUE; | |
3046 | } | |
3047 | ||
3048 | ||
3049 | /* | |
3050 | * C16 110 (I-O Data: SC-NBD) data map: | |
3051 | * | |
3052 | * ROMADDR | |
3053 | * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6) | |
3054 | * Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC | |
3055 | * 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync) | |
3056 | * 0x08 - 0x0f : Not Used? (0x0) | |
3057 | * 0x10 : Transfer Mode | |
3058 | * Value 0: PIO, 1: Busmater | |
3059 | * 0x11 : Bus Reset Delay Time (0x00-0x20) | |
3060 | * 0x12 : Bus Termination | |
3061 | * Value 0: Disable, 1: Enable | |
3062 | * 0x13 - 0x19 : Disconnection | |
3063 | * Value 0: Disable, 1: Enable | |
3064 | * 0x1a - 0x7c : Not Used? (0) | |
3065 | * 0x7d : Not Used? (0xf8) | |
3066 | * 0x7e : Constant (0x55), Validity signature | |
3067 | * 0x7f : Constant (0xaa), Validity signature | |
3068 | */ | |
3069 | static int nsp32_getprom_c16(nsp32_hw_data *data) | |
3070 | { | |
3071 | int ret, i; | |
3072 | nsp32_target *target; | |
3073 | int entry, val; | |
3074 | ||
3075 | /* | |
3076 | * Reset time which is designated by EEPROM. | |
3077 | * | |
3078 | * TODO: Not used yet. | |
3079 | */ | |
3080 | data->resettime = nsp32_prom_read(data, 0x11); | |
3081 | ||
3082 | /* | |
3083 | * each device Synchronous Transfer Period | |
3084 | */ | |
3085 | for (i = 0; i < NSP32_HOST_SCSIID; i++) { | |
3086 | target = &data->target[i]; | |
3087 | ret = nsp32_prom_read(data, i); | |
3088 | switch (ret) { | |
3089 | case 0: /* 20MB/s */ | |
3090 | val = 0x0c; | |
3091 | break; | |
3092 | case 1: /* 10MB/s */ | |
3093 | val = 0x19; | |
3094 | break; | |
3095 | case 2: /* 5MB/s */ | |
3096 | val = 0x32; | |
3097 | break; | |
3098 | case 3: /* ASYNC */ | |
3099 | val = 0x00; | |
3100 | break; | |
3101 | default: /* default 20MB/s */ | |
3102 | val = 0x0c; | |
3103 | break; | |
3104 | } | |
3105 | entry = nsp32_search_period_entry(data, target, val); | |
3106 | if (entry < 0 || trans_mode == ULTRA20M_MODE) { | |
3107 | /* search failed... set maximum speed */ | |
3108 | entry = 0; | |
3109 | } | |
3110 | target->limit_entry = entry; | |
3111 | } | |
3112 | ||
3113 | return TRUE; | |
3114 | } | |
3115 | ||
3116 | ||
3117 | /* | |
3118 | * Atmel AT24C01A (drived in 5V) serial EEPROM routines | |
3119 | */ | |
3120 | static int nsp32_prom_read(nsp32_hw_data *data, int romaddr) | |
3121 | { | |
3122 | int i, val; | |
3123 | ||
3124 | /* start condition */ | |
3125 | nsp32_prom_start(data); | |
3126 | ||
3127 | /* device address */ | |
3128 | nsp32_prom_write_bit(data, 1); /* 1 */ | |
3129 | nsp32_prom_write_bit(data, 0); /* 0 */ | |
3130 | nsp32_prom_write_bit(data, 1); /* 1 */ | |
3131 | nsp32_prom_write_bit(data, 0); /* 0 */ | |
3132 | nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */ | |
3133 | nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */ | |
3134 | nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */ | |
3135 | ||
3136 | /* R/W: W for dummy write */ | |
3137 | nsp32_prom_write_bit(data, 0); | |
3138 | ||
3139 | /* ack */ | |
3140 | nsp32_prom_write_bit(data, 0); | |
3141 | ||
3142 | /* word address */ | |
3143 | for (i = 7; i >= 0; i--) { | |
3144 | nsp32_prom_write_bit(data, ((romaddr >> i) & 1)); | |
3145 | } | |
3146 | ||
3147 | /* ack */ | |
3148 | nsp32_prom_write_bit(data, 0); | |
3149 | ||
3150 | /* start condition */ | |
3151 | nsp32_prom_start(data); | |
3152 | ||
3153 | /* device address */ | |
3154 | nsp32_prom_write_bit(data, 1); /* 1 */ | |
3155 | nsp32_prom_write_bit(data, 0); /* 0 */ | |
3156 | nsp32_prom_write_bit(data, 1); /* 1 */ | |
3157 | nsp32_prom_write_bit(data, 0); /* 0 */ | |
3158 | nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */ | |
3159 | nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */ | |
3160 | nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */ | |
3161 | ||
3162 | /* R/W: R */ | |
3163 | nsp32_prom_write_bit(data, 1); | |
3164 | ||
3165 | /* ack */ | |
3166 | nsp32_prom_write_bit(data, 0); | |
3167 | ||
3168 | /* data... */ | |
3169 | val = 0; | |
3170 | for (i = 7; i >= 0; i--) { | |
3171 | val += (nsp32_prom_read_bit(data) << i); | |
3172 | } | |
3173 | ||
3174 | /* no ack */ | |
3175 | nsp32_prom_write_bit(data, 1); | |
3176 | ||
3177 | /* stop condition */ | |
3178 | nsp32_prom_stop(data); | |
3179 | ||
3180 | return val; | |
3181 | } | |
3182 | ||
3183 | static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val) | |
3184 | { | |
3185 | int base = data->BaseAddress; | |
3186 | int tmp; | |
3187 | ||
3188 | tmp = nsp32_index_read1(base, SERIAL_ROM_CTL); | |
3189 | ||
3190 | if (val == 0) { | |
3191 | tmp &= ~bit; | |
3192 | } else { | |
3193 | tmp |= bit; | |
3194 | } | |
3195 | ||
3196 | nsp32_index_write1(base, SERIAL_ROM_CTL, tmp); | |
3197 | ||
3198 | udelay(10); | |
3199 | } | |
3200 | ||
3201 | static int nsp32_prom_get(nsp32_hw_data *data, int bit) | |
3202 | { | |
3203 | int base = data->BaseAddress; | |
3204 | int tmp, ret; | |
3205 | ||
3206 | if (bit != SDA) { | |
3207 | nsp32_msg(KERN_ERR, "return value is not appropriate"); | |
3208 | return 0; | |
3209 | } | |
3210 | ||
3211 | ||
3212 | tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit; | |
3213 | ||
3214 | if (tmp == 0) { | |
3215 | ret = 0; | |
3216 | } else { | |
3217 | ret = 1; | |
3218 | } | |
3219 | ||
3220 | udelay(10); | |
3221 | ||
3222 | return ret; | |
3223 | } | |
3224 | ||
3225 | static void nsp32_prom_start (nsp32_hw_data *data) | |
3226 | { | |
3227 | /* start condition */ | |
3228 | nsp32_prom_set(data, SCL, 1); | |
3229 | nsp32_prom_set(data, SDA, 1); | |
3230 | nsp32_prom_set(data, ENA, 1); /* output mode */ | |
3231 | nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting | |
3232 | * SDA 1->0 is start condition */ | |
3233 | nsp32_prom_set(data, SCL, 0); | |
3234 | } | |
3235 | ||
3236 | static void nsp32_prom_stop (nsp32_hw_data *data) | |
3237 | { | |
3238 | /* stop condition */ | |
3239 | nsp32_prom_set(data, SCL, 1); | |
3240 | nsp32_prom_set(data, SDA, 0); | |
3241 | nsp32_prom_set(data, ENA, 1); /* output mode */ | |
3242 | nsp32_prom_set(data, SDA, 1); | |
3243 | nsp32_prom_set(data, SCL, 0); | |
3244 | } | |
3245 | ||
3246 | static void nsp32_prom_write_bit(nsp32_hw_data *data, int val) | |
3247 | { | |
3248 | /* write */ | |
3249 | nsp32_prom_set(data, SDA, val); | |
3250 | nsp32_prom_set(data, SCL, 1 ); | |
3251 | nsp32_prom_set(data, SCL, 0 ); | |
3252 | } | |
3253 | ||
3254 | static int nsp32_prom_read_bit(nsp32_hw_data *data) | |
3255 | { | |
3256 | int val; | |
3257 | ||
3258 | /* read */ | |
3259 | nsp32_prom_set(data, ENA, 0); /* input mode */ | |
3260 | nsp32_prom_set(data, SCL, 1); | |
3261 | ||
3262 | val = nsp32_prom_get(data, SDA); | |
3263 | ||
3264 | nsp32_prom_set(data, SCL, 0); | |
3265 | nsp32_prom_set(data, ENA, 1); /* output mode */ | |
3266 | ||
3267 | return val; | |
3268 | } | |
3269 | ||
3270 | ||
3271 | /************************************************************************** | |
3272 | * Power Management | |
3273 | */ | |
3274 | #ifdef CONFIG_PM | |
3275 | ||
3276 | /* Device suspended */ | |
e5378ca8 | 3277 | static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
3278 | { |
3279 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
3280 | ||
3281 | nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host); | |
3282 | ||
3283 | pci_save_state (pdev); | |
3284 | pci_disable_device (pdev); | |
e5378ca8 | 3285 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
1da177e4 LT |
3286 | |
3287 | return 0; | |
3288 | } | |
3289 | ||
3290 | /* Device woken up */ | |
3291 | static int nsp32_resume(struct pci_dev *pdev) | |
3292 | { | |
3293 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
3294 | nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; | |
3295 | unsigned short reg; | |
3296 | ||
3297 | nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", pdev, pci_name(pdev), host); | |
3298 | ||
e5378ca8 PM |
3299 | pci_set_power_state(pdev, PCI_D0); |
3300 | pci_enable_wake (pdev, PCI_D0, 0); | |
1da177e4 LT |
3301 | pci_restore_state (pdev); |
3302 | ||
3303 | reg = nsp32_read2(data->BaseAddress, INDEX_REG); | |
3304 | ||
3305 | nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg); | |
3306 | ||
3307 | if (reg == 0xffff) { | |
3308 | nsp32_msg(KERN_INFO, "missing device. abort resume."); | |
3309 | return 0; | |
3310 | } | |
3311 | ||
3312 | nsp32hw_init (data); | |
3313 | nsp32_do_bus_reset(data); | |
3314 | ||
3315 | nsp32_msg(KERN_INFO, "resume success"); | |
3316 | ||
3317 | return 0; | |
3318 | } | |
3319 | ||
1da177e4 LT |
3320 | #endif |
3321 | ||
3322 | /************************************************************************ | |
3323 | * PCI/Cardbus probe/remove routine | |
3324 | */ | |
6f039790 | 3325 | static int nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
1da177e4 LT |
3326 | { |
3327 | int ret; | |
3328 | nsp32_hw_data *data = &nsp32_data_base; | |
3329 | ||
3330 | nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); | |
3331 | ||
3332 | ret = pci_enable_device(pdev); | |
3333 | if (ret) { | |
3334 | nsp32_msg(KERN_ERR, "failed to enable pci device"); | |
3335 | return ret; | |
3336 | } | |
3337 | ||
3338 | data->Pci = pdev; | |
3339 | data->pci_devid = id; | |
3340 | data->IrqNumber = pdev->irq; | |
3341 | data->BaseAddress = pci_resource_start(pdev, 0); | |
3342 | data->NumAddress = pci_resource_len (pdev, 0); | |
25729a7f | 3343 | data->MmioAddress = pci_ioremap_bar(pdev, 1); |
1da177e4 LT |
3344 | data->MmioLength = pci_resource_len (pdev, 1); |
3345 | ||
3346 | pci_set_master(pdev); | |
3347 | ||
1da177e4 | 3348 | ret = nsp32_detect(pdev); |
1da177e4 LT |
3349 | |
3350 | nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s", | |
3351 | pdev->irq, | |
3352 | data->MmioAddress, data->MmioLength, | |
3353 | pci_name(pdev), | |
3354 | nsp32_model[id->driver_data]); | |
3355 | ||
3356 | nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret); | |
3357 | ||
3358 | return ret; | |
3359 | } | |
3360 | ||
6f039790 | 3361 | static void nsp32_remove(struct pci_dev *pdev) |
1da177e4 | 3362 | { |
1da177e4 | 3363 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
1da177e4 LT |
3364 | |
3365 | nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); | |
3366 | ||
1da177e4 LT |
3367 | scsi_remove_host(host); |
3368 | ||
3369 | nsp32_release(host); | |
3370 | ||
3371 | scsi_host_put(host); | |
1da177e4 LT |
3372 | } |
3373 | ||
1da177e4 LT |
3374 | static struct pci_driver nsp32_driver = { |
3375 | .name = "nsp32", | |
3376 | .id_table = nsp32_pci_table, | |
3377 | .probe = nsp32_probe, | |
6f039790 | 3378 | .remove = nsp32_remove, |
1da177e4 LT |
3379 | #ifdef CONFIG_PM |
3380 | .suspend = nsp32_suspend, | |
3381 | .resume = nsp32_resume, | |
1da177e4 LT |
3382 | #endif |
3383 | }; | |
3384 | ||
3385 | /********************************************************************* | |
3386 | * Moule entry point | |
3387 | */ | |
3388 | static int __init init_nsp32(void) { | |
3389 | nsp32_msg(KERN_INFO, "loading..."); | |
dcbccbde | 3390 | return pci_register_driver(&nsp32_driver); |
1da177e4 LT |
3391 | } |
3392 | ||
3393 | static void __exit exit_nsp32(void) { | |
3394 | nsp32_msg(KERN_INFO, "unloading..."); | |
3395 | pci_unregister_driver(&nsp32_driver); | |
3396 | } | |
3397 | ||
3398 | module_init(init_nsp32); | |
3399 | module_exit(exit_nsp32); | |
3400 | ||
3401 | /* end */ |