Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * dc395x.c | |
3 | * | |
4 | * Device Driver for Tekram DC395(U/UW/F), DC315(U) | |
5 | * PCI SCSI Bus Master Host Adapter | |
6 | * (SCSI chip set used Tekram ASIC TRM-S1040) | |
7 | * | |
8 | * Authors: | |
9 | * C.L. Huang <ching@tekram.com.tw> | |
10 | * Erich Chen <erich@tekram.com.tw> | |
11 | * (C) Copyright 1995-1999 Tekram Technology Co., Ltd. | |
12 | * | |
13 | * Kurt Garloff <garloff@suse.de> | |
14 | * (C) 1999-2000 Kurt Garloff | |
15 | * | |
16 | * Oliver Neukum <oliver@neukum.name> | |
17 | * Ali Akcaagac <aliakc@web.de> | |
18 | * Jamie Lenehan <lenehan@twibble.org> | |
19 | * (C) 2003 | |
20 | * | |
21 | * License: GNU GPL | |
22 | * | |
23 | ************************************************************************* | |
24 | * | |
25 | * Redistribution and use in source and binary forms, with or without | |
26 | * modification, are permitted provided that the following conditions | |
27 | * are met: | |
28 | * 1. Redistributions of source code must retain the above copyright | |
29 | * notice, this list of conditions and the following disclaimer. | |
30 | * 2. Redistributions in binary form must reproduce the above copyright | |
31 | * notice, this list of conditions and the following disclaimer in the | |
32 | * documentation and/or other materials provided with the distribution. | |
33 | * 3. The name of the author may not be used to endorse or promote products | |
34 | * derived from this software without specific prior written permission. | |
35 | * | |
36 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
37 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
38 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
39 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
40 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
41 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
42 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
43 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
44 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
45 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
46 | * | |
47 | ************************************************************************ | |
48 | */ | |
49 | #include <linux/module.h> | |
50 | #include <linux/moduleparam.h> | |
51 | #include <linux/delay.h> | |
52 | #include <linux/ctype.h> | |
53 | #include <linux/blkdev.h> | |
54 | #include <linux/interrupt.h> | |
55 | #include <linux/init.h> | |
56 | #include <linux/spinlock.h> | |
57 | #include <linux/pci.h> | |
58 | #include <linux/list.h> | |
59 | #include <linux/vmalloc.h> | |
60 | #include <asm/io.h> | |
61 | ||
62 | #include <scsi/scsi.h> | |
63 | #include <scsi/scsicam.h> /* needed for scsicam_bios_param */ | |
64 | #include <scsi/scsi_cmnd.h> | |
65 | #include <scsi/scsi_device.h> | |
66 | #include <scsi/scsi_host.h> | |
67 | ||
68 | #include "dc395x.h" | |
69 | ||
70 | #define DC395X_NAME "dc395x" | |
71 | #define DC395X_BANNER "Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040" | |
72 | #define DC395X_VERSION "v2.05, 2004/03/08" | |
73 | ||
74 | /*--------------------------------------------------------------------------- | |
75 | Features | |
76 | ---------------------------------------------------------------------------*/ | |
77 | /* | |
78 | * Set to disable parts of the driver | |
79 | */ | |
80 | /*#define DC395x_NO_DISCONNECT*/ | |
81 | /*#define DC395x_NO_TAGQ*/ | |
82 | /*#define DC395x_NO_SYNC*/ | |
83 | /*#define DC395x_NO_WIDE*/ | |
84 | ||
85 | /*--------------------------------------------------------------------------- | |
86 | Debugging | |
87 | ---------------------------------------------------------------------------*/ | |
88 | /* | |
89 | * Types of debugging that can be enabled and disabled | |
90 | */ | |
91 | #define DBG_KG 0x0001 | |
92 | #define DBG_0 0x0002 | |
93 | #define DBG_1 0x0004 | |
94 | #define DBG_SG 0x0020 | |
95 | #define DBG_FIFO 0x0040 | |
96 | #define DBG_PIO 0x0080 | |
97 | ||
98 | ||
99 | /* | |
100 | * Set set of things to output debugging for. | |
101 | * Undefine to remove all debugging | |
102 | */ | |
103 | /*#define DEBUG_MASK (DBG_0|DBG_1|DBG_SG|DBG_FIFO|DBG_PIO)*/ | |
104 | /*#define DEBUG_MASK DBG_0*/ | |
105 | ||
106 | ||
107 | /* | |
108 | * Output a kernel mesage at the specified level and append the | |
109 | * driver name and a ": " to the start of the message | |
110 | */ | |
111 | #define dprintkl(level, format, arg...) \ | |
112 | printk(level DC395X_NAME ": " format , ## arg) | |
113 | ||
114 | ||
115 | #ifdef DEBUG_MASK | |
116 | /* | |
117 | * print a debug message - this is formated with KERN_DEBUG, then the | |
118 | * driver name followed by a ": " and then the message is output. | |
119 | * This also checks that the specified debug level is enabled before | |
120 | * outputing the message | |
121 | */ | |
122 | #define dprintkdbg(type, format, arg...) \ | |
123 | do { \ | |
124 | if ((type) & (DEBUG_MASK)) \ | |
125 | dprintkl(KERN_DEBUG , format , ## arg); \ | |
126 | } while (0) | |
127 | ||
128 | /* | |
129 | * Check if the specified type of debugging is enabled | |
130 | */ | |
131 | #define debug_enabled(type) ((DEBUG_MASK) & (type)) | |
132 | ||
133 | #else | |
134 | /* | |
135 | * No debugging. Do nothing | |
136 | */ | |
137 | #define dprintkdbg(type, format, arg...) \ | |
138 | do {} while (0) | |
139 | #define debug_enabled(type) (0) | |
140 | ||
141 | #endif | |
142 | ||
143 | ||
144 | #ifndef PCI_VENDOR_ID_TEKRAM | |
145 | #define PCI_VENDOR_ID_TEKRAM 0x1DE1 /* Vendor ID */ | |
146 | #endif | |
147 | #ifndef PCI_DEVICE_ID_TEKRAM_TRMS1040 | |
148 | #define PCI_DEVICE_ID_TEKRAM_TRMS1040 0x0391 /* Device ID */ | |
149 | #endif | |
150 | ||
151 | ||
152 | #define DC395x_LOCK_IO(dev,flags) spin_lock_irqsave(((struct Scsi_Host *)dev)->host_lock, flags) | |
153 | #define DC395x_UNLOCK_IO(dev,flags) spin_unlock_irqrestore(((struct Scsi_Host *)dev)->host_lock, flags) | |
154 | ||
155 | #define DC395x_read8(acb,address) (u8)(inb(acb->io_port_base + (address))) | |
156 | #define DC395x_read16(acb,address) (u16)(inw(acb->io_port_base + (address))) | |
157 | #define DC395x_read32(acb,address) (u32)(inl(acb->io_port_base + (address))) | |
158 | #define DC395x_write8(acb,address,value) outb((value), acb->io_port_base + (address)) | |
159 | #define DC395x_write16(acb,address,value) outw((value), acb->io_port_base + (address)) | |
160 | #define DC395x_write32(acb,address,value) outl((value), acb->io_port_base + (address)) | |
161 | ||
162 | /* cmd->result */ | |
163 | #define RES_TARGET 0x000000FF /* Target State */ | |
164 | #define RES_TARGET_LNX STATUS_MASK /* Only official ... */ | |
165 | #define RES_ENDMSG 0x0000FF00 /* End Message */ | |
166 | #define RES_DID 0x00FF0000 /* DID_ codes */ | |
167 | #define RES_DRV 0xFF000000 /* DRIVER_ codes */ | |
168 | ||
169 | #define MK_RES(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt)) | |
170 | #define MK_RES_LNX(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt)<<1) | |
171 | ||
172 | #define SET_RES_TARGET(who,tgt) { who &= ~RES_TARGET; who |= (int)(tgt); } | |
173 | #define SET_RES_TARGET_LNX(who,tgt) { who &= ~RES_TARGET_LNX; who |= (int)(tgt) << 1; } | |
174 | #define SET_RES_MSG(who,msg) { who &= ~RES_ENDMSG; who |= (int)(msg) << 8; } | |
175 | #define SET_RES_DID(who,did) { who &= ~RES_DID; who |= (int)(did) << 16; } | |
176 | #define SET_RES_DRV(who,drv) { who &= ~RES_DRV; who |= (int)(drv) << 24; } | |
177 | ||
178 | #define TAG_NONE 255 | |
179 | ||
180 | /* | |
181 | * srb->segement_x is the hw sg list. It is always allocated as a | |
182 | * DC395x_MAX_SG_LISTENTRY entries in a linear block which does not | |
183 | * cross a page boundy. | |
184 | */ | |
185 | #define SEGMENTX_LEN (sizeof(struct SGentry)*DC395x_MAX_SG_LISTENTRY) | |
b4b08e58 | 186 | |
1da177e4 LT |
187 | |
188 | struct SGentry { | |
189 | u32 address; /* bus! address */ | |
190 | u32 length; | |
191 | }; | |
192 | ||
193 | /* The SEEPROM structure for TRM_S1040 */ | |
194 | struct NVRamTarget { | |
195 | u8 cfg0; /* Target configuration byte 0 */ | |
196 | u8 period; /* Target period */ | |
197 | u8 cfg2; /* Target configuration byte 2 */ | |
198 | u8 cfg3; /* Target configuration byte 3 */ | |
199 | }; | |
200 | ||
201 | struct NvRamType { | |
202 | u8 sub_vendor_id[2]; /* 0,1 Sub Vendor ID */ | |
203 | u8 sub_sys_id[2]; /* 2,3 Sub System ID */ | |
204 | u8 sub_class; /* 4 Sub Class */ | |
205 | u8 vendor_id[2]; /* 5,6 Vendor ID */ | |
206 | u8 device_id[2]; /* 7,8 Device ID */ | |
207 | u8 reserved; /* 9 Reserved */ | |
208 | struct NVRamTarget target[DC395x_MAX_SCSI_ID]; | |
209 | /** 10,11,12,13 | |
210 | ** 14,15,16,17 | |
211 | ** .... | |
212 | ** .... | |
213 | ** 70,71,72,73 | |
214 | */ | |
215 | u8 scsi_id; /* 74 Host Adapter SCSI ID */ | |
216 | u8 channel_cfg; /* 75 Channel configuration */ | |
217 | u8 delay_time; /* 76 Power on delay time */ | |
218 | u8 max_tag; /* 77 Maximum tags */ | |
219 | u8 reserved0; /* 78 */ | |
220 | u8 boot_target; /* 79 */ | |
221 | u8 boot_lun; /* 80 */ | |
222 | u8 reserved1; /* 81 */ | |
223 | u16 reserved2[22]; /* 82,..125 */ | |
224 | u16 cksum; /* 126,127 */ | |
225 | }; | |
226 | ||
227 | struct ScsiReqBlk { | |
228 | struct list_head list; /* next/prev ptrs for srb lists */ | |
229 | struct DeviceCtlBlk *dcb; | |
230 | struct scsi_cmnd *cmd; | |
231 | ||
232 | struct SGentry *segment_x; /* Linear array of hw sg entries (up to 64 entries) */ | |
cdb8c2a6 | 233 | dma_addr_t sg_bus_addr; /* Bus address of sg list (ie, of segment_x) */ |
1da177e4 LT |
234 | |
235 | u8 sg_count; /* No of HW sg entries for this request */ | |
236 | u8 sg_index; /* Index of HW sg entry for this request */ | |
cdb8c2a6 GL |
237 | size_t total_xfer_length; /* Total number of bytes remaining to be transfered */ |
238 | size_t request_length; /* Total number of bytes in this request */ | |
1da177e4 LT |
239 | /* |
240 | * The sense buffer handling function, request_sense, uses | |
241 | * the first hw sg entry (segment_x[0]) and the transfer | |
242 | * length (total_xfer_length). While doing this it stores the | |
243 | * original values into the last sg hw list | |
244 | * (srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1] and the | |
245 | * total_xfer_length in xferred. These values are restored in | |
246 | * pci_unmap_srb_sense. This is the only place xferred is used. | |
247 | */ | |
cdb8c2a6 | 248 | size_t xferred; /* Saved copy of total_xfer_length */ |
1da177e4 LT |
249 | |
250 | u16 state; | |
251 | ||
252 | u8 msgin_buf[6]; | |
253 | u8 msgout_buf[6]; | |
254 | ||
255 | u8 adapter_status; | |
256 | u8 target_status; | |
257 | u8 msg_count; | |
258 | u8 end_message; | |
259 | ||
260 | u8 tag_number; | |
261 | u8 status; | |
262 | u8 retry_count; | |
263 | u8 flag; | |
264 | ||
265 | u8 scsi_phase; | |
266 | }; | |
267 | ||
268 | struct DeviceCtlBlk { | |
269 | struct list_head list; /* next/prev ptrs for the dcb list */ | |
270 | struct AdapterCtlBlk *acb; | |
271 | struct list_head srb_going_list; /* head of going srb list */ | |
272 | struct list_head srb_waiting_list; /* head of waiting srb list */ | |
273 | ||
274 | struct ScsiReqBlk *active_srb; | |
275 | u32 tag_mask; | |
276 | ||
277 | u16 max_command; | |
278 | ||
279 | u8 target_id; /* SCSI Target ID (SCSI Only) */ | |
280 | u8 target_lun; /* SCSI Log. Unit (SCSI Only) */ | |
281 | u8 identify_msg; | |
282 | u8 dev_mode; | |
283 | ||
284 | u8 inquiry7; /* To store Inquiry flags */ | |
285 | u8 sync_mode; /* 0:async mode */ | |
286 | u8 min_nego_period; /* for nego. */ | |
287 | u8 sync_period; /* for reg. */ | |
288 | ||
289 | u8 sync_offset; /* for reg. and nego.(low nibble) */ | |
290 | u8 flag; | |
291 | u8 dev_type; | |
292 | u8 init_tcq_flag; | |
293 | }; | |
294 | ||
295 | struct AdapterCtlBlk { | |
296 | struct Scsi_Host *scsi_host; | |
297 | ||
298 | unsigned long io_port_base; | |
299 | unsigned long io_port_len; | |
300 | ||
301 | struct list_head dcb_list; /* head of going dcb list */ | |
302 | struct DeviceCtlBlk *dcb_run_robin; | |
303 | struct DeviceCtlBlk *active_dcb; | |
304 | ||
305 | struct list_head srb_free_list; /* head of free srb list */ | |
306 | struct ScsiReqBlk *tmp_srb; | |
307 | struct timer_list waiting_timer; | |
308 | struct timer_list selto_timer; | |
309 | ||
310 | u16 srb_count; | |
311 | ||
312 | u8 sel_timeout; | |
313 | ||
314 | unsigned int irq_level; | |
315 | u8 tag_max_num; | |
316 | u8 acb_flag; | |
317 | u8 gmode2; | |
318 | ||
319 | u8 config; | |
320 | u8 lun_chk; | |
321 | u8 scan_devices; | |
322 | u8 hostid_bit; | |
323 | ||
324 | u8 dcb_map[DC395x_MAX_SCSI_ID]; | |
325 | struct DeviceCtlBlk *children[DC395x_MAX_SCSI_ID][32]; | |
326 | ||
327 | struct pci_dev *dev; | |
328 | ||
329 | u8 msg_len; | |
330 | ||
331 | struct ScsiReqBlk srb_array[DC395x_MAX_SRB_CNT]; | |
332 | struct ScsiReqBlk srb; | |
333 | ||
334 | struct NvRamType eeprom; /* eeprom settings for this adapter */ | |
335 | }; | |
336 | ||
337 | ||
338 | /*--------------------------------------------------------------------------- | |
339 | Forward declarations | |
340 | ---------------------------------------------------------------------------*/ | |
341 | static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
342 | u16 *pscsi_status); | |
343 | static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
344 | u16 *pscsi_status); | |
345 | static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
346 | u16 *pscsi_status); | |
347 | static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
348 | u16 *pscsi_status); | |
349 | static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
350 | u16 *pscsi_status); | |
351 | static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
352 | u16 *pscsi_status); | |
353 | static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
354 | u16 *pscsi_status); | |
355 | static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
356 | u16 *pscsi_status); | |
357 | static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
358 | u16 *pscsi_status); | |
359 | static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
360 | u16 *pscsi_status); | |
361 | static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
362 | u16 *pscsi_status); | |
363 | static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
364 | u16 *pscsi_status); | |
365 | static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
366 | u16 *pscsi_status); | |
367 | static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
368 | u16 *pscsi_status); | |
369 | static void set_basic_config(struct AdapterCtlBlk *acb); | |
370 | static void cleanup_after_transfer(struct AdapterCtlBlk *acb, | |
371 | struct ScsiReqBlk *srb); | |
372 | static void reset_scsi_bus(struct AdapterCtlBlk *acb); | |
373 | static void data_io_transfer(struct AdapterCtlBlk *acb, | |
374 | struct ScsiReqBlk *srb, u16 io_dir); | |
375 | static void disconnect(struct AdapterCtlBlk *acb); | |
376 | static void reselect(struct AdapterCtlBlk *acb); | |
377 | static u8 start_scsi(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
378 | struct ScsiReqBlk *srb); | |
379 | static inline void enable_msgout_abort(struct AdapterCtlBlk *acb, | |
380 | struct ScsiReqBlk *srb); | |
381 | static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb, | |
382 | struct ScsiReqBlk *srb); | |
383 | static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_code, | |
384 | struct scsi_cmnd *cmd, u8 force); | |
385 | static void scsi_reset_detect(struct AdapterCtlBlk *acb); | |
386 | static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb); | |
387 | static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb, | |
388 | struct ScsiReqBlk *srb); | |
389 | static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
390 | struct ScsiReqBlk *srb); | |
391 | static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
392 | struct ScsiReqBlk *srb); | |
393 | static void set_xfer_rate(struct AdapterCtlBlk *acb, | |
394 | struct DeviceCtlBlk *dcb); | |
395 | static void waiting_timeout(unsigned long ptr); | |
396 | ||
397 | ||
398 | /*--------------------------------------------------------------------------- | |
399 | Static Data | |
400 | ---------------------------------------------------------------------------*/ | |
401 | static u16 current_sync_offset = 0; | |
402 | ||
403 | static void *dc395x_scsi_phase0[] = { | |
404 | data_out_phase0,/* phase:0 */ | |
405 | data_in_phase0, /* phase:1 */ | |
406 | command_phase0, /* phase:2 */ | |
407 | status_phase0, /* phase:3 */ | |
408 | nop0, /* phase:4 PH_BUS_FREE .. initial phase */ | |
409 | nop0, /* phase:5 PH_BUS_FREE .. initial phase */ | |
410 | msgout_phase0, /* phase:6 */ | |
411 | msgin_phase0, /* phase:7 */ | |
412 | }; | |
413 | ||
414 | static void *dc395x_scsi_phase1[] = { | |
415 | data_out_phase1,/* phase:0 */ | |
416 | data_in_phase1, /* phase:1 */ | |
417 | command_phase1, /* phase:2 */ | |
418 | status_phase1, /* phase:3 */ | |
419 | nop1, /* phase:4 PH_BUS_FREE .. initial phase */ | |
420 | nop1, /* phase:5 PH_BUS_FREE .. initial phase */ | |
421 | msgout_phase1, /* phase:6 */ | |
422 | msgin_phase1, /* phase:7 */ | |
423 | }; | |
424 | ||
425 | /* | |
426 | *Fast20: 000 50ns, 20.0 MHz | |
427 | * 001 75ns, 13.3 MHz | |
428 | * 010 100ns, 10.0 MHz | |
429 | * 011 125ns, 8.0 MHz | |
430 | * 100 150ns, 6.6 MHz | |
431 | * 101 175ns, 5.7 MHz | |
432 | * 110 200ns, 5.0 MHz | |
433 | * 111 250ns, 4.0 MHz | |
434 | * | |
435 | *Fast40(LVDS): 000 25ns, 40.0 MHz | |
436 | * 001 50ns, 20.0 MHz | |
437 | * 010 75ns, 13.3 MHz | |
438 | * 011 100ns, 10.0 MHz | |
439 | * 100 125ns, 8.0 MHz | |
440 | * 101 150ns, 6.6 MHz | |
441 | * 110 175ns, 5.7 MHz | |
442 | * 111 200ns, 5.0 MHz | |
443 | */ | |
444 | /*static u8 clock_period[] = {12,19,25,31,37,44,50,62};*/ | |
445 | ||
446 | /* real period:48ns,76ns,100ns,124ns,148ns,176ns,200ns,248ns */ | |
447 | static u8 clock_period[] = { 12, 18, 25, 31, 37, 43, 50, 62 }; | |
448 | static u16 clock_speed[] = { 200, 133, 100, 80, 67, 58, 50, 40 }; | |
449 | ||
450 | ||
451 | /*--------------------------------------------------------------------------- | |
452 | Configuration | |
453 | ---------------------------------------------------------------------------*/ | |
454 | /* | |
455 | * Module/boot parameters currently effect *all* instances of the | |
456 | * card in the system. | |
457 | */ | |
458 | ||
459 | /* | |
460 | * Command line parameters are stored in a structure below. | |
461 | * These are the index's into the structure for the various | |
462 | * command line options. | |
463 | */ | |
464 | #define CFG_ADAPTER_ID 0 | |
465 | #define CFG_MAX_SPEED 1 | |
466 | #define CFG_DEV_MODE 2 | |
467 | #define CFG_ADAPTER_MODE 3 | |
468 | #define CFG_TAGS 4 | |
469 | #define CFG_RESET_DELAY 5 | |
470 | ||
471 | #define CFG_NUM 6 /* number of configuration items */ | |
472 | ||
473 | ||
474 | /* | |
475 | * Value used to indicate that a command line override | |
476 | * hasn't been used to modify the value. | |
477 | */ | |
478 | #define CFG_PARAM_UNSET -1 | |
479 | ||
480 | ||
481 | /* | |
482 | * Hold command line parameters. | |
483 | */ | |
484 | struct ParameterData { | |
485 | int value; /* value of this setting */ | |
486 | int min; /* minimum value */ | |
487 | int max; /* maximum value */ | |
488 | int def; /* default value */ | |
489 | int safe; /* safe value */ | |
490 | }; | |
491 | static struct ParameterData __devinitdata cfg_data[] = { | |
492 | { /* adapter id */ | |
493 | CFG_PARAM_UNSET, | |
494 | 0, | |
495 | 15, | |
496 | 7, | |
497 | 7 | |
498 | }, | |
499 | { /* max speed */ | |
500 | CFG_PARAM_UNSET, | |
501 | 0, | |
502 | 7, | |
503 | 1, /* 13.3Mhz */ | |
504 | 4, /* 6.7Hmz */ | |
505 | }, | |
506 | { /* dev mode */ | |
507 | CFG_PARAM_UNSET, | |
508 | 0, | |
509 | 0x3f, | |
510 | NTC_DO_PARITY_CHK | NTC_DO_DISCONNECT | NTC_DO_SYNC_NEGO | | |
511 | NTC_DO_WIDE_NEGO | NTC_DO_TAG_QUEUEING | | |
512 | NTC_DO_SEND_START, | |
513 | NTC_DO_PARITY_CHK | NTC_DO_SEND_START | |
514 | }, | |
515 | { /* adapter mode */ | |
516 | CFG_PARAM_UNSET, | |
517 | 0, | |
518 | 0x2f, | |
519 | #ifdef CONFIG_SCSI_MULTI_LUN | |
520 | NAC_SCANLUN | | |
521 | #endif | |
522 | NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET | |
523 | /*| NAC_ACTIVE_NEG*/, | |
524 | NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET | 0x08 | |
525 | }, | |
526 | { /* tags */ | |
527 | CFG_PARAM_UNSET, | |
528 | 0, | |
529 | 5, | |
530 | 3, /* 16 tags (??) */ | |
531 | 2, | |
532 | }, | |
533 | { /* reset delay */ | |
534 | CFG_PARAM_UNSET, | |
535 | 0, | |
536 | 180, | |
537 | 1, /* 1 second */ | |
538 | 10, /* 10 seconds */ | |
539 | } | |
540 | }; | |
541 | ||
542 | ||
543 | /* | |
59c51591 | 544 | * Safe settings. If set to zero the BIOS/default values with |
1da177e4 LT |
545 | * command line overrides will be used. If set to 1 then safe and |
546 | * slow settings will be used. | |
547 | */ | |
548 | static int use_safe_settings = 0; | |
549 | module_param_named(safe, use_safe_settings, bool, 0); | |
550 | MODULE_PARM_DESC(safe, "Use safe and slow settings only. Default: false"); | |
551 | ||
552 | ||
553 | module_param_named(adapter_id, cfg_data[CFG_ADAPTER_ID].value, int, 0); | |
554 | MODULE_PARM_DESC(adapter_id, "Adapter SCSI ID. Default 7 (0-15)"); | |
555 | ||
556 | module_param_named(max_speed, cfg_data[CFG_MAX_SPEED].value, int, 0); | |
557 | MODULE_PARM_DESC(max_speed, "Maximum bus speed. Default 1 (0-7) Speeds: 0=20, 1=13.3, 2=10, 3=8, 4=6.7, 5=5.8, 6=5, 7=4 Mhz"); | |
558 | ||
559 | module_param_named(dev_mode, cfg_data[CFG_DEV_MODE].value, int, 0); | |
560 | MODULE_PARM_DESC(dev_mode, "Device mode."); | |
561 | ||
562 | module_param_named(adapter_mode, cfg_data[CFG_ADAPTER_MODE].value, int, 0); | |
563 | MODULE_PARM_DESC(adapter_mode, "Adapter mode."); | |
564 | ||
565 | module_param_named(tags, cfg_data[CFG_TAGS].value, int, 0); | |
566 | MODULE_PARM_DESC(tags, "Number of tags (1<<x). Default 3 (0-5)"); | |
567 | ||
568 | module_param_named(reset_delay, cfg_data[CFG_RESET_DELAY].value, int, 0); | |
569 | MODULE_PARM_DESC(reset_delay, "Reset delay in seconds. Default 1 (0-180)"); | |
570 | ||
571 | ||
572 | /** | |
573 | * set_safe_settings - if the use_safe_settings option is set then | |
574 | * set all values to the safe and slow values. | |
575 | **/ | |
576 | static void __devinit set_safe_settings(void) | |
577 | { | |
578 | if (use_safe_settings) | |
579 | { | |
580 | int i; | |
581 | ||
582 | dprintkl(KERN_INFO, "Using safe settings.\n"); | |
583 | for (i = 0; i < CFG_NUM; i++) | |
584 | { | |
585 | cfg_data[i].value = cfg_data[i].safe; | |
586 | } | |
587 | } | |
588 | } | |
589 | ||
590 | ||
591 | /** | |
592 | * fix_settings - reset any boot parameters which are out of range | |
593 | * back to the default values. | |
594 | **/ | |
595 | static void __devinit fix_settings(void) | |
596 | { | |
597 | int i; | |
598 | ||
599 | dprintkdbg(DBG_1, | |
600 | "setup: AdapterId=%08x MaxSpeed=%08x DevMode=%08x " | |
601 | "AdapterMode=%08x Tags=%08x ResetDelay=%08x\n", | |
602 | cfg_data[CFG_ADAPTER_ID].value, | |
603 | cfg_data[CFG_MAX_SPEED].value, | |
604 | cfg_data[CFG_DEV_MODE].value, | |
605 | cfg_data[CFG_ADAPTER_MODE].value, | |
606 | cfg_data[CFG_TAGS].value, | |
607 | cfg_data[CFG_RESET_DELAY].value); | |
608 | for (i = 0; i < CFG_NUM; i++) | |
609 | { | |
610 | if (cfg_data[i].value < cfg_data[i].min | |
611 | || cfg_data[i].value > cfg_data[i].max) | |
612 | cfg_data[i].value = cfg_data[i].def; | |
613 | } | |
614 | } | |
615 | ||
616 | ||
617 | ||
618 | /* | |
619 | * Mapping from the eeprom delay index value (index into this array) | |
59c51591 | 620 | * to the number of actual seconds that the delay should be for. |
1da177e4 LT |
621 | */ |
622 | static char __devinitdata eeprom_index_to_delay_map[] = | |
623 | { 1, 3, 5, 10, 16, 30, 60, 120 }; | |
624 | ||
625 | ||
626 | /** | |
627 | * eeprom_index_to_delay - Take the eeprom delay setting and convert it | |
628 | * into a number of seconds. | |
629 | * | |
630 | * @eeprom: The eeprom structure in which we find the delay index to map. | |
631 | **/ | |
632 | static void __devinit eeprom_index_to_delay(struct NvRamType *eeprom) | |
633 | { | |
634 | eeprom->delay_time = eeprom_index_to_delay_map[eeprom->delay_time]; | |
635 | } | |
636 | ||
637 | ||
638 | /** | |
639 | * delay_to_eeprom_index - Take a delay in seconds and return the | |
640 | * closest eeprom index which will delay for at least that amount of | |
641 | * seconds. | |
642 | * | |
643 | * @delay: The delay, in seconds, to find the eeprom index for. | |
644 | **/ | |
645 | static int __devinit delay_to_eeprom_index(int delay) | |
646 | { | |
647 | u8 idx = 0; | |
648 | while (idx < 7 && eeprom_index_to_delay_map[idx] < delay) | |
649 | idx++; | |
650 | return idx; | |
651 | } | |
652 | ||
653 | ||
654 | /** | |
655 | * eeprom_override - Override the eeprom settings, in the provided | |
656 | * eeprom structure, with values that have been set on the command | |
657 | * line. | |
658 | * | |
659 | * @eeprom: The eeprom data to override with command line options. | |
660 | **/ | |
661 | static void __devinit eeprom_override(struct NvRamType *eeprom) | |
662 | { | |
663 | u8 id; | |
664 | ||
665 | /* Adapter Settings */ | |
666 | if (cfg_data[CFG_ADAPTER_ID].value != CFG_PARAM_UNSET) | |
667 | eeprom->scsi_id = (u8)cfg_data[CFG_ADAPTER_ID].value; | |
668 | ||
669 | if (cfg_data[CFG_ADAPTER_MODE].value != CFG_PARAM_UNSET) | |
670 | eeprom->channel_cfg = (u8)cfg_data[CFG_ADAPTER_MODE].value; | |
671 | ||
672 | if (cfg_data[CFG_RESET_DELAY].value != CFG_PARAM_UNSET) | |
673 | eeprom->delay_time = delay_to_eeprom_index( | |
674 | cfg_data[CFG_RESET_DELAY].value); | |
675 | ||
676 | if (cfg_data[CFG_TAGS].value != CFG_PARAM_UNSET) | |
677 | eeprom->max_tag = (u8)cfg_data[CFG_TAGS].value; | |
678 | ||
679 | /* Device Settings */ | |
680 | for (id = 0; id < DC395x_MAX_SCSI_ID; id++) { | |
681 | if (cfg_data[CFG_DEV_MODE].value != CFG_PARAM_UNSET) | |
682 | eeprom->target[id].cfg0 = | |
683 | (u8)cfg_data[CFG_DEV_MODE].value; | |
684 | ||
685 | if (cfg_data[CFG_MAX_SPEED].value != CFG_PARAM_UNSET) | |
686 | eeprom->target[id].period = | |
687 | (u8)cfg_data[CFG_MAX_SPEED].value; | |
688 | ||
689 | } | |
690 | } | |
691 | ||
692 | ||
693 | /*--------------------------------------------------------------------------- | |
694 | ---------------------------------------------------------------------------*/ | |
695 | ||
696 | static unsigned int list_size(struct list_head *head) | |
697 | { | |
698 | unsigned int count = 0; | |
699 | struct list_head *pos; | |
700 | list_for_each(pos, head) | |
701 | count++; | |
702 | return count; | |
703 | } | |
704 | ||
705 | ||
706 | static struct DeviceCtlBlk *dcb_get_next(struct list_head *head, | |
707 | struct DeviceCtlBlk *pos) | |
708 | { | |
709 | int use_next = 0; | |
710 | struct DeviceCtlBlk* next = NULL; | |
711 | struct DeviceCtlBlk* i; | |
712 | ||
713 | if (list_empty(head)) | |
714 | return NULL; | |
715 | ||
716 | /* find supplied dcb and then select the next one */ | |
717 | list_for_each_entry(i, head, list) | |
718 | if (use_next) { | |
719 | next = i; | |
720 | break; | |
721 | } else if (i == pos) { | |
722 | use_next = 1; | |
723 | } | |
724 | /* if no next one take the head one (ie, wraparound) */ | |
725 | if (!next) | |
726 | list_for_each_entry(i, head, list) { | |
727 | next = i; | |
728 | break; | |
729 | } | |
730 | ||
731 | return next; | |
732 | } | |
733 | ||
734 | ||
735 | static void free_tag(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb) | |
736 | { | |
737 | if (srb->tag_number < 255) { | |
738 | dcb->tag_mask &= ~(1 << srb->tag_number); /* free tag mask */ | |
739 | srb->tag_number = 255; | |
740 | } | |
741 | } | |
742 | ||
743 | ||
744 | /* Find cmd in SRB list */ | |
77933d72 | 745 | static inline struct ScsiReqBlk *find_cmd(struct scsi_cmnd *cmd, |
1da177e4 LT |
746 | struct list_head *head) |
747 | { | |
748 | struct ScsiReqBlk *i; | |
749 | list_for_each_entry(i, head, list) | |
750 | if (i->cmd == cmd) | |
751 | return i; | |
752 | return NULL; | |
753 | } | |
754 | ||
755 | ||
756 | static struct ScsiReqBlk *srb_get_free(struct AdapterCtlBlk *acb) | |
757 | { | |
758 | struct list_head *head = &acb->srb_free_list; | |
759 | struct ScsiReqBlk *srb = NULL; | |
760 | ||
761 | if (!list_empty(head)) { | |
762 | srb = list_entry(head->next, struct ScsiReqBlk, list); | |
763 | list_del(head->next); | |
764 | dprintkdbg(DBG_0, "srb_get_free: srb=%p\n", srb); | |
765 | } | |
766 | return srb; | |
767 | } | |
768 | ||
769 | ||
770 | static void srb_free_insert(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb) | |
771 | { | |
772 | dprintkdbg(DBG_0, "srb_free_insert: srb=%p\n", srb); | |
773 | list_add_tail(&srb->list, &acb->srb_free_list); | |
774 | } | |
775 | ||
776 | ||
777 | static void srb_waiting_insert(struct DeviceCtlBlk *dcb, | |
778 | struct ScsiReqBlk *srb) | |
779 | { | |
780 | dprintkdbg(DBG_0, "srb_waiting_insert: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 781 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
782 | list_add(&srb->list, &dcb->srb_waiting_list); |
783 | } | |
784 | ||
785 | ||
786 | static void srb_waiting_append(struct DeviceCtlBlk *dcb, | |
787 | struct ScsiReqBlk *srb) | |
788 | { | |
789 | dprintkdbg(DBG_0, "srb_waiting_append: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 790 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
791 | list_add_tail(&srb->list, &dcb->srb_waiting_list); |
792 | } | |
793 | ||
794 | ||
795 | static void srb_going_append(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb) | |
796 | { | |
797 | dprintkdbg(DBG_0, "srb_going_append: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 798 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
799 | list_add_tail(&srb->list, &dcb->srb_going_list); |
800 | } | |
801 | ||
802 | ||
803 | static void srb_going_remove(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb) | |
804 | { | |
805 | struct ScsiReqBlk *i; | |
806 | struct ScsiReqBlk *tmp; | |
807 | dprintkdbg(DBG_0, "srb_going_remove: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 808 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
809 | |
810 | list_for_each_entry_safe(i, tmp, &dcb->srb_going_list, list) | |
811 | if (i == srb) { | |
812 | list_del(&srb->list); | |
813 | break; | |
814 | } | |
815 | } | |
816 | ||
817 | ||
818 | static void srb_waiting_remove(struct DeviceCtlBlk *dcb, | |
819 | struct ScsiReqBlk *srb) | |
820 | { | |
821 | struct ScsiReqBlk *i; | |
822 | struct ScsiReqBlk *tmp; | |
823 | dprintkdbg(DBG_0, "srb_waiting_remove: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 824 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
825 | |
826 | list_for_each_entry_safe(i, tmp, &dcb->srb_waiting_list, list) | |
827 | if (i == srb) { | |
828 | list_del(&srb->list); | |
829 | break; | |
830 | } | |
831 | } | |
832 | ||
833 | ||
834 | static void srb_going_to_waiting_move(struct DeviceCtlBlk *dcb, | |
835 | struct ScsiReqBlk *srb) | |
836 | { | |
837 | dprintkdbg(DBG_0, | |
838 | "srb_going_to_waiting_move: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 839 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
840 | list_move(&srb->list, &dcb->srb_waiting_list); |
841 | } | |
842 | ||
843 | ||
844 | static void srb_waiting_to_going_move(struct DeviceCtlBlk *dcb, | |
845 | struct ScsiReqBlk *srb) | |
846 | { | |
847 | dprintkdbg(DBG_0, | |
848 | "srb_waiting_to_going_move: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 849 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
850 | list_move(&srb->list, &dcb->srb_going_list); |
851 | } | |
852 | ||
853 | ||
854 | /* Sets the timer to wake us up */ | |
855 | static void waiting_set_timer(struct AdapterCtlBlk *acb, unsigned long to) | |
856 | { | |
857 | if (timer_pending(&acb->waiting_timer)) | |
858 | return; | |
859 | init_timer(&acb->waiting_timer); | |
860 | acb->waiting_timer.function = waiting_timeout; | |
861 | acb->waiting_timer.data = (unsigned long) acb; | |
862 | if (time_before(jiffies + to, acb->scsi_host->last_reset - HZ / 2)) | |
863 | acb->waiting_timer.expires = | |
864 | acb->scsi_host->last_reset - HZ / 2 + 1; | |
865 | else | |
866 | acb->waiting_timer.expires = jiffies + to + 1; | |
867 | add_timer(&acb->waiting_timer); | |
868 | } | |
869 | ||
870 | ||
871 | /* Send the next command from the waiting list to the bus */ | |
872 | static void waiting_process_next(struct AdapterCtlBlk *acb) | |
873 | { | |
874 | struct DeviceCtlBlk *start = NULL; | |
875 | struct DeviceCtlBlk *pos; | |
876 | struct DeviceCtlBlk *dcb; | |
877 | struct ScsiReqBlk *srb; | |
878 | struct list_head *dcb_list_head = &acb->dcb_list; | |
879 | ||
880 | if (acb->active_dcb | |
881 | || (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV))) | |
882 | return; | |
883 | ||
884 | if (timer_pending(&acb->waiting_timer)) | |
885 | del_timer(&acb->waiting_timer); | |
886 | ||
887 | if (list_empty(dcb_list_head)) | |
888 | return; | |
889 | ||
890 | /* | |
891 | * Find the starting dcb. Need to find it again in the list | |
892 | * since the list may have changed since we set the ptr to it | |
893 | */ | |
894 | list_for_each_entry(dcb, dcb_list_head, list) | |
895 | if (dcb == acb->dcb_run_robin) { | |
896 | start = dcb; | |
897 | break; | |
898 | } | |
899 | if (!start) { | |
900 | /* This can happen! */ | |
901 | start = list_entry(dcb_list_head->next, typeof(*start), list); | |
902 | acb->dcb_run_robin = start; | |
903 | } | |
904 | ||
905 | ||
906 | /* | |
907 | * Loop over the dcb, but we start somewhere (potentially) in | |
908 | * the middle of the loop so we need to manully do this. | |
909 | */ | |
910 | pos = start; | |
911 | do { | |
912 | struct list_head *waiting_list_head = &pos->srb_waiting_list; | |
913 | ||
914 | /* Make sure, the next another device gets scheduled ... */ | |
915 | acb->dcb_run_robin = dcb_get_next(dcb_list_head, | |
916 | acb->dcb_run_robin); | |
917 | ||
918 | if (list_empty(waiting_list_head) || | |
919 | pos->max_command <= list_size(&pos->srb_going_list)) { | |
920 | /* move to next dcb */ | |
921 | pos = dcb_get_next(dcb_list_head, pos); | |
922 | } else { | |
923 | srb = list_entry(waiting_list_head->next, | |
924 | struct ScsiReqBlk, list); | |
925 | ||
926 | /* Try to send to the bus */ | |
927 | if (!start_scsi(acb, pos, srb)) | |
928 | srb_waiting_to_going_move(pos, srb); | |
929 | else | |
930 | waiting_set_timer(acb, HZ/50); | |
931 | break; | |
932 | } | |
933 | } while (pos != start); | |
934 | } | |
935 | ||
936 | ||
937 | /* Wake up waiting queue */ | |
938 | static void waiting_timeout(unsigned long ptr) | |
939 | { | |
940 | unsigned long flags; | |
941 | struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)ptr; | |
942 | dprintkdbg(DBG_1, | |
943 | "waiting_timeout: Queue woken up by timer. acb=%p\n", acb); | |
944 | DC395x_LOCK_IO(acb->scsi_host, flags); | |
945 | waiting_process_next(acb); | |
946 | DC395x_UNLOCK_IO(acb->scsi_host, flags); | |
947 | } | |
948 | ||
949 | ||
950 | /* Get the DCB for a given ID/LUN combination */ | |
951 | static struct DeviceCtlBlk *find_dcb(struct AdapterCtlBlk *acb, u8 id, u8 lun) | |
952 | { | |
953 | return acb->children[id][lun]; | |
954 | } | |
955 | ||
956 | ||
957 | /* Send SCSI Request Block (srb) to adapter (acb) */ | |
958 | static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb) | |
959 | { | |
960 | struct DeviceCtlBlk *dcb = srb->dcb; | |
961 | ||
962 | if (dcb->max_command <= list_size(&dcb->srb_going_list) || | |
963 | acb->active_dcb || | |
964 | (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV))) { | |
965 | srb_waiting_append(dcb, srb); | |
966 | waiting_process_next(acb); | |
967 | return; | |
968 | } | |
969 | ||
970 | if (!start_scsi(acb, dcb, srb)) | |
971 | srb_going_append(dcb, srb); | |
972 | else { | |
973 | srb_waiting_insert(dcb, srb); | |
974 | waiting_set_timer(acb, HZ / 50); | |
975 | } | |
976 | } | |
977 | ||
1da177e4 LT |
978 | /* Prepare SRB for being sent to Device DCB w/ command *cmd */ |
979 | static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb, | |
980 | struct ScsiReqBlk *srb) | |
981 | { | |
a862ea31 | 982 | int nseg; |
1da177e4 LT |
983 | enum dma_data_direction dir = cmd->sc_data_direction; |
984 | dprintkdbg(DBG_0, "build_srb: (pid#%li) <%02i-%i>\n", | |
12a44162 | 985 | cmd->serial_number, dcb->target_id, dcb->target_lun); |
1da177e4 LT |
986 | |
987 | srb->dcb = dcb; | |
988 | srb->cmd = cmd; | |
989 | srb->sg_count = 0; | |
990 | srb->total_xfer_length = 0; | |
991 | srb->sg_bus_addr = 0; | |
1da177e4 LT |
992 | srb->sg_index = 0; |
993 | srb->adapter_status = 0; | |
994 | srb->target_status = 0; | |
995 | srb->msg_count = 0; | |
996 | srb->status = 0; | |
997 | srb->flag = 0; | |
998 | srb->state = 0; | |
999 | srb->retry_count = 0; | |
1000 | srb->tag_number = TAG_NONE; | |
1001 | srb->scsi_phase = PH_BUS_FREE; /* initial phase */ | |
1002 | srb->end_message = 0; | |
1003 | ||
a862ea31 FT |
1004 | nseg = scsi_dma_map(cmd); |
1005 | BUG_ON(nseg < 0); | |
1006 | ||
1007 | if (dir == PCI_DMA_NONE || !nseg) { | |
1da177e4 LT |
1008 | dprintkdbg(DBG_0, |
1009 | "build_srb: [0] len=%d buf=%p use_sg=%d !MAP=%08x\n", | |
a862ea31 FT |
1010 | cmd->bufflen, scsi_sglist(cmd), scsi_sg_count(cmd), |
1011 | srb->segment_x[0].address); | |
1012 | } else { | |
1da177e4 | 1013 | int i; |
a862ea31 FT |
1014 | u32 reqlen = scsi_bufflen(cmd); |
1015 | struct scatterlist *sg; | |
1da177e4 | 1016 | struct SGentry *sgp = srb->segment_x; |
a862ea31 FT |
1017 | |
1018 | srb->sg_count = nseg; | |
1019 | ||
1da177e4 | 1020 | dprintkdbg(DBG_0, |
a862ea31 FT |
1021 | "build_srb: [n] len=%d buf=%p use_sg=%d segs=%d\n", |
1022 | reqlen, scsi_sglist(cmd), scsi_sg_count(cmd), | |
1023 | srb->sg_count); | |
1da177e4 | 1024 | |
a862ea31 FT |
1025 | scsi_for_each_sg(cmd, sg, srb->sg_count, i) { |
1026 | u32 busaddr = (u32)sg_dma_address(sg); | |
1027 | u32 seglen = (u32)sg->length; | |
b4b08e58 | 1028 | sgp[i].address = busaddr; |
1da177e4 LT |
1029 | sgp[i].length = seglen; |
1030 | srb->total_xfer_length += seglen; | |
1da177e4 | 1031 | } |
1da177e4 LT |
1032 | sgp += srb->sg_count - 1; |
1033 | ||
1034 | /* | |
1035 | * adjust last page if too big as it is allocated | |
1036 | * on even page boundaries | |
1037 | */ | |
1038 | if (srb->total_xfer_length > reqlen) { | |
1039 | sgp->length -= (srb->total_xfer_length - reqlen); | |
1040 | srb->total_xfer_length = reqlen; | |
1041 | } | |
1042 | ||
1043 | /* Fixup for WIDE padding - make sure length is even */ | |
1044 | if (dcb->sync_period & WIDE_SYNC && | |
1045 | srb->total_xfer_length % 2) { | |
1046 | srb->total_xfer_length++; | |
1047 | sgp->length++; | |
1048 | } | |
1049 | ||
1050 | srb->sg_bus_addr = pci_map_single(dcb->acb->dev, | |
1051 | srb->segment_x, | |
1052 | SEGMENTX_LEN, | |
1053 | PCI_DMA_TODEVICE); | |
1054 | ||
1055 | dprintkdbg(DBG_SG, "build_srb: [n] map sg %p->%08x(%05x)\n", | |
1056 | srb->segment_x, srb->sg_bus_addr, SEGMENTX_LEN); | |
1da177e4 | 1057 | } |
cdb8c2a6 GL |
1058 | |
1059 | srb->request_length = srb->total_xfer_length; | |
1da177e4 LT |
1060 | } |
1061 | ||
1062 | ||
1063 | /** | |
1064 | * dc395x_queue_command - queue scsi command passed from the mid | |
1065 | * layer, invoke 'done' on completion | |
1066 | * | |
1067 | * @cmd: pointer to scsi command object | |
1068 | * @done: function pointer to be invoked on completion | |
1069 | * | |
1070 | * Returns 1 if the adapter (host) is busy, else returns 0. One | |
1071 | * reason for an adapter to be busy is that the number | |
1072 | * of outstanding queued commands is already equal to | |
1073 | * struct Scsi_Host::can_queue . | |
1074 | * | |
1075 | * Required: if struct Scsi_Host::can_queue is ever non-zero | |
1076 | * then this function is required. | |
1077 | * | |
1078 | * Locks: struct Scsi_Host::host_lock held on entry (with "irqsave") | |
1079 | * and is expected to be held on return. | |
1080 | * | |
1081 | **/ | |
1082 | static int dc395x_queue_command(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) | |
1083 | { | |
1084 | struct DeviceCtlBlk *dcb; | |
1085 | struct ScsiReqBlk *srb; | |
1086 | struct AdapterCtlBlk *acb = | |
1087 | (struct AdapterCtlBlk *)cmd->device->host->hostdata; | |
1088 | dprintkdbg(DBG_0, "queue_command: (pid#%li) <%02i-%i> cmnd=0x%02x\n", | |
12a44162 | 1089 | cmd->serial_number, cmd->device->id, cmd->device->lun, cmd->cmnd[0]); |
1da177e4 LT |
1090 | |
1091 | /* Assume BAD_TARGET; will be cleared later */ | |
1092 | cmd->result = DID_BAD_TARGET << 16; | |
1093 | ||
1094 | /* ignore invalid targets */ | |
1095 | if (cmd->device->id >= acb->scsi_host->max_id || | |
1096 | cmd->device->lun >= acb->scsi_host->max_lun || | |
1097 | cmd->device->lun >31) { | |
1098 | goto complete; | |
1099 | } | |
1100 | ||
1101 | /* does the specified lun on the specified device exist */ | |
1102 | if (!(acb->dcb_map[cmd->device->id] & (1 << cmd->device->lun))) { | |
1103 | dprintkl(KERN_INFO, "queue_command: Ignore target <%02i-%i>\n", | |
1104 | cmd->device->id, cmd->device->lun); | |
1105 | goto complete; | |
1106 | } | |
1107 | ||
1108 | /* do we have a DCB for the device */ | |
1109 | dcb = find_dcb(acb, cmd->device->id, cmd->device->lun); | |
1110 | if (!dcb) { | |
1111 | /* should never happen */ | |
1112 | dprintkl(KERN_ERR, "queue_command: No such device <%02i-%i>", | |
1113 | cmd->device->id, cmd->device->lun); | |
1114 | goto complete; | |
1115 | } | |
1116 | ||
1117 | /* set callback and clear result in the command */ | |
1118 | cmd->scsi_done = done; | |
1119 | cmd->result = 0; | |
1120 | ||
1121 | srb = srb_get_free(acb); | |
1122 | if (!srb) | |
1123 | { | |
1124 | /* | |
1125 | * Return 1 since we are unable to queue this command at this | |
1126 | * point in time. | |
1127 | */ | |
1128 | dprintkdbg(DBG_0, "queue_command: No free srb's\n"); | |
1129 | return 1; | |
1130 | } | |
1131 | ||
1132 | build_srb(cmd, dcb, srb); | |
1133 | ||
1134 | if (!list_empty(&dcb->srb_waiting_list)) { | |
1135 | /* append to waiting queue */ | |
1136 | srb_waiting_append(dcb, srb); | |
1137 | waiting_process_next(acb); | |
1138 | } else { | |
1139 | /* process immediately */ | |
1140 | send_srb(acb, srb); | |
1141 | } | |
12a44162 | 1142 | dprintkdbg(DBG_1, "queue_command: (pid#%li) done\n", cmd->serial_number); |
1da177e4 LT |
1143 | return 0; |
1144 | ||
1145 | complete: | |
1146 | /* | |
1147 | * Complete the command immediatey, and then return 0 to | |
1148 | * indicate that we have handled the command. This is usually | |
1149 | * done when the commad is for things like non existent | |
1150 | * devices. | |
1151 | */ | |
1152 | done(cmd); | |
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | ||
1157 | /* | |
1158 | * Return the disk geometry for the given SCSI device. | |
1159 | */ | |
1160 | static int dc395x_bios_param(struct scsi_device *sdev, | |
1161 | struct block_device *bdev, sector_t capacity, int *info) | |
1162 | { | |
1163 | #ifdef CONFIG_SCSI_DC395x_TRMS1040_TRADMAP | |
1164 | int heads, sectors, cylinders; | |
1165 | struct AdapterCtlBlk *acb; | |
1166 | int size = capacity; | |
1167 | ||
1168 | dprintkdbg(DBG_0, "dc395x_bios_param..............\n"); | |
1169 | acb = (struct AdapterCtlBlk *)sdev->host->hostdata; | |
1170 | heads = 64; | |
1171 | sectors = 32; | |
1172 | cylinders = size / (heads * sectors); | |
1173 | ||
1174 | if ((acb->gmode2 & NAC_GREATER_1G) && (cylinders > 1024)) { | |
1175 | heads = 255; | |
1176 | sectors = 63; | |
1177 | cylinders = size / (heads * sectors); | |
1178 | } | |
1179 | geom[0] = heads; | |
1180 | geom[1] = sectors; | |
1181 | geom[2] = cylinders; | |
1182 | return 0; | |
1183 | #else | |
1184 | return scsicam_bios_param(bdev, capacity, info); | |
1185 | #endif | |
1186 | } | |
1187 | ||
1188 | ||
1189 | static void dump_register_info(struct AdapterCtlBlk *acb, | |
1190 | struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb) | |
1191 | { | |
1192 | u16 pstat; | |
1193 | struct pci_dev *dev = acb->dev; | |
1194 | pci_read_config_word(dev, PCI_STATUS, &pstat); | |
1195 | if (!dcb) | |
1196 | dcb = acb->active_dcb; | |
1197 | if (!srb && dcb) | |
1198 | srb = dcb->active_srb; | |
1199 | if (srb) { | |
1200 | if (!srb->cmd) | |
1201 | dprintkl(KERN_INFO, "dump: srb=%p cmd=%p OOOPS!\n", | |
1202 | srb, srb->cmd); | |
1203 | else | |
1204 | dprintkl(KERN_INFO, "dump: srb=%p cmd=%p (pid#%li) " | |
1205 | "cmnd=0x%02x <%02i-%i>\n", | |
12a44162 | 1206 | srb, srb->cmd, srb->cmd->serial_number, |
1da177e4 LT |
1207 | srb->cmd->cmnd[0], srb->cmd->device->id, |
1208 | srb->cmd->device->lun); | |
3c5c6658 | 1209 | printk(" sglist=%p cnt=%i idx=%i len=%zu\n", |
1da177e4 LT |
1210 | srb->segment_x, srb->sg_count, srb->sg_index, |
1211 | srb->total_xfer_length); | |
1212 | printk(" state=0x%04x status=0x%02x phase=0x%02x (%sconn.)\n", | |
1213 | srb->state, srb->status, srb->scsi_phase, | |
1214 | (acb->active_dcb) ? "" : "not"); | |
1215 | } | |
1216 | dprintkl(KERN_INFO, "dump: SCSI{status=0x%04x fifocnt=0x%02x " | |
1217 | "signals=0x%02x irqstat=0x%02x sync=0x%02x target=0x%02x " | |
1218 | "rselid=0x%02x ctr=0x%08x irqen=0x%02x config=0x%04x " | |
1219 | "config2=0x%02x cmd=0x%02x selto=0x%02x}\n", | |
1220 | DC395x_read16(acb, TRM_S1040_SCSI_STATUS), | |
1221 | DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT), | |
1222 | DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL), | |
1223 | DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS), | |
1224 | DC395x_read8(acb, TRM_S1040_SCSI_SYNC), | |
1225 | DC395x_read8(acb, TRM_S1040_SCSI_TARGETID), | |
1226 | DC395x_read8(acb, TRM_S1040_SCSI_IDMSG), | |
1227 | DC395x_read32(acb, TRM_S1040_SCSI_COUNTER), | |
1228 | DC395x_read8(acb, TRM_S1040_SCSI_INTEN), | |
1229 | DC395x_read16(acb, TRM_S1040_SCSI_CONFIG0), | |
1230 | DC395x_read8(acb, TRM_S1040_SCSI_CONFIG2), | |
1231 | DC395x_read8(acb, TRM_S1040_SCSI_COMMAND), | |
1232 | DC395x_read8(acb, TRM_S1040_SCSI_TIMEOUT)); | |
1233 | dprintkl(KERN_INFO, "dump: DMA{cmd=0x%04x fifocnt=0x%02x fstat=0x%02x " | |
1234 | "irqstat=0x%02x irqen=0x%02x cfg=0x%04x tctr=0x%08x " | |
1235 | "ctctr=0x%08x addr=0x%08x:0x%08x}\n", | |
1236 | DC395x_read16(acb, TRM_S1040_DMA_COMMAND), | |
1237 | DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT), | |
1238 | DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT), | |
1239 | DC395x_read8(acb, TRM_S1040_DMA_STATUS), | |
1240 | DC395x_read8(acb, TRM_S1040_DMA_INTEN), | |
1241 | DC395x_read16(acb, TRM_S1040_DMA_CONFIG), | |
1242 | DC395x_read32(acb, TRM_S1040_DMA_XCNT), | |
1243 | DC395x_read32(acb, TRM_S1040_DMA_CXCNT), | |
1244 | DC395x_read32(acb, TRM_S1040_DMA_XHIGHADDR), | |
1245 | DC395x_read32(acb, TRM_S1040_DMA_XLOWADDR)); | |
1246 | dprintkl(KERN_INFO, "dump: gen{gctrl=0x%02x gstat=0x%02x gtmr=0x%02x} " | |
1247 | "pci{status=0x%04x}\n", | |
1248 | DC395x_read8(acb, TRM_S1040_GEN_CONTROL), | |
1249 | DC395x_read8(acb, TRM_S1040_GEN_STATUS), | |
1250 | DC395x_read8(acb, TRM_S1040_GEN_TIMER), | |
1251 | pstat); | |
1252 | } | |
1253 | ||
1254 | ||
1255 | static inline void clear_fifo(struct AdapterCtlBlk *acb, char *txt) | |
1256 | { | |
1257 | #if debug_enabled(DBG_FIFO) | |
1258 | u8 lines = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL); | |
1259 | u8 fifocnt = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT); | |
1260 | if (!(fifocnt & 0x40)) | |
1261 | dprintkdbg(DBG_FIFO, | |
1262 | "clear_fifo: (%i bytes) on phase %02x in %s\n", | |
1263 | fifocnt & 0x3f, lines, txt); | |
1264 | #endif | |
1265 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRFIFO); | |
1266 | } | |
1267 | ||
1268 | ||
1269 | static void reset_dev_param(struct AdapterCtlBlk *acb) | |
1270 | { | |
1271 | struct DeviceCtlBlk *dcb; | |
1272 | struct NvRamType *eeprom = &acb->eeprom; | |
1273 | dprintkdbg(DBG_0, "reset_dev_param: acb=%p\n", acb); | |
1274 | ||
1275 | list_for_each_entry(dcb, &acb->dcb_list, list) { | |
1276 | u8 period_index; | |
1277 | ||
1278 | dcb->sync_mode &= ~(SYNC_NEGO_DONE + WIDE_NEGO_DONE); | |
1279 | dcb->sync_period = 0; | |
1280 | dcb->sync_offset = 0; | |
1281 | ||
1282 | dcb->dev_mode = eeprom->target[dcb->target_id].cfg0; | |
1283 | period_index = eeprom->target[dcb->target_id].period & 0x07; | |
1284 | dcb->min_nego_period = clock_period[period_index]; | |
1285 | if (!(dcb->dev_mode & NTC_DO_WIDE_NEGO) | |
1286 | || !(acb->config & HCC_WIDE_CARD)) | |
1287 | dcb->sync_mode &= ~WIDE_NEGO_ENABLE; | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | ||
1292 | /* | |
1293 | * perform a hard reset on the SCSI bus | |
1294 | * @cmd - some command for this host (for fetching hooks) | |
1295 | * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003). | |
1296 | */ | |
68b3aa7c | 1297 | static int __dc395x_eh_bus_reset(struct scsi_cmnd *cmd) |
1da177e4 LT |
1298 | { |
1299 | struct AdapterCtlBlk *acb = | |
1300 | (struct AdapterCtlBlk *)cmd->device->host->hostdata; | |
1301 | dprintkl(KERN_INFO, | |
1302 | "eh_bus_reset: (pid#%li) target=<%02i-%i> cmd=%p\n", | |
12a44162 | 1303 | cmd->serial_number, cmd->device->id, cmd->device->lun, cmd); |
1da177e4 LT |
1304 | |
1305 | if (timer_pending(&acb->waiting_timer)) | |
1306 | del_timer(&acb->waiting_timer); | |
1307 | ||
1308 | /* | |
1309 | * disable interrupt | |
1310 | */ | |
1311 | DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00); | |
1312 | DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00); | |
1313 | DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE); | |
1314 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE); | |
1315 | ||
1316 | reset_scsi_bus(acb); | |
1317 | udelay(500); | |
1318 | ||
1319 | /* We may be in serious trouble. Wait some seconds */ | |
1320 | acb->scsi_host->last_reset = | |
1321 | jiffies + 3 * HZ / 2 + | |
1322 | HZ * acb->eeprom.delay_time; | |
1323 | ||
1324 | /* | |
1325 | * re-enable interrupt | |
1326 | */ | |
1327 | /* Clear SCSI FIFO */ | |
1328 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO); | |
1329 | clear_fifo(acb, "eh_bus_reset"); | |
1330 | /* Delete pending IRQ */ | |
1331 | DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS); | |
1332 | set_basic_config(acb); | |
1333 | ||
1334 | reset_dev_param(acb); | |
1335 | doing_srb_done(acb, DID_RESET, cmd, 0); | |
1336 | acb->active_dcb = NULL; | |
1337 | acb->acb_flag = 0; /* RESET_DETECT, RESET_DONE ,RESET_DEV */ | |
1338 | waiting_process_next(acb); | |
1339 | ||
1340 | return SUCCESS; | |
1341 | } | |
1342 | ||
68b3aa7c JG |
1343 | static int dc395x_eh_bus_reset(struct scsi_cmnd *cmd) |
1344 | { | |
1345 | int rc; | |
1346 | ||
1347 | spin_lock_irq(cmd->device->host->host_lock); | |
1348 | rc = __dc395x_eh_bus_reset(cmd); | |
1349 | spin_unlock_irq(cmd->device->host->host_lock); | |
1350 | ||
1351 | return rc; | |
1352 | } | |
1da177e4 LT |
1353 | |
1354 | /* | |
1355 | * abort an errant SCSI command | |
1356 | * @cmd - command to be aborted | |
1357 | * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003). | |
1358 | */ | |
1359 | static int dc395x_eh_abort(struct scsi_cmnd *cmd) | |
1360 | { | |
1361 | /* | |
1362 | * Look into our command queues: If it has not been sent already, | |
1363 | * we remove it and return success. Otherwise fail. | |
1364 | */ | |
1365 | struct AdapterCtlBlk *acb = | |
1366 | (struct AdapterCtlBlk *)cmd->device->host->hostdata; | |
1367 | struct DeviceCtlBlk *dcb; | |
1368 | struct ScsiReqBlk *srb; | |
1369 | dprintkl(KERN_INFO, "eh_abort: (pid#%li) target=<%02i-%i> cmd=%p\n", | |
12a44162 | 1370 | cmd->serial_number, cmd->device->id, cmd->device->lun, cmd); |
1da177e4 LT |
1371 | |
1372 | dcb = find_dcb(acb, cmd->device->id, cmd->device->lun); | |
1373 | if (!dcb) { | |
1374 | dprintkl(KERN_DEBUG, "eh_abort: No such device\n"); | |
1375 | return FAILED; | |
1376 | } | |
1377 | ||
1378 | srb = find_cmd(cmd, &dcb->srb_waiting_list); | |
1379 | if (srb) { | |
1380 | srb_waiting_remove(dcb, srb); | |
1381 | pci_unmap_srb_sense(acb, srb); | |
1382 | pci_unmap_srb(acb, srb); | |
1383 | free_tag(dcb, srb); | |
1384 | srb_free_insert(acb, srb); | |
1385 | dprintkl(KERN_DEBUG, "eh_abort: Command was waiting\n"); | |
1386 | cmd->result = DID_ABORT << 16; | |
1387 | return SUCCESS; | |
1388 | } | |
1389 | srb = find_cmd(cmd, &dcb->srb_going_list); | |
1390 | if (srb) { | |
cdb8c2a6 | 1391 | dprintkl(KERN_DEBUG, "eh_abort: Command in progress\n"); |
1da177e4 LT |
1392 | /* XXX: Should abort the command here */ |
1393 | } else { | |
cdb8c2a6 | 1394 | dprintkl(KERN_DEBUG, "eh_abort: Command not found\n"); |
1da177e4 LT |
1395 | } |
1396 | return FAILED; | |
1397 | } | |
1398 | ||
1399 | ||
1400 | /* SDTR */ | |
1401 | static void build_sdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
1402 | struct ScsiReqBlk *srb) | |
1403 | { | |
1404 | u8 *ptr = srb->msgout_buf + srb->msg_count; | |
1405 | if (srb->msg_count > 1) { | |
1406 | dprintkl(KERN_INFO, | |
1407 | "build_sdtr: msgout_buf BUSY (%i: %02x %02x)\n", | |
1408 | srb->msg_count, srb->msgout_buf[0], | |
1409 | srb->msgout_buf[1]); | |
1410 | return; | |
1411 | } | |
1412 | if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO)) { | |
1413 | dcb->sync_offset = 0; | |
1414 | dcb->min_nego_period = 200 >> 2; | |
1415 | } else if (dcb->sync_offset == 0) | |
1416 | dcb->sync_offset = SYNC_NEGO_OFFSET; | |
1417 | ||
1418 | *ptr++ = MSG_EXTENDED; /* (01h) */ | |
1419 | *ptr++ = 3; /* length */ | |
1420 | *ptr++ = EXTENDED_SDTR; /* (01h) */ | |
1421 | *ptr++ = dcb->min_nego_period; /* Transfer period (in 4ns) */ | |
1422 | *ptr++ = dcb->sync_offset; /* Transfer period (max. REQ/ACK dist) */ | |
1423 | srb->msg_count += 5; | |
1424 | srb->state |= SRB_DO_SYNC_NEGO; | |
1425 | } | |
1426 | ||
1427 | ||
1428 | /* WDTR */ | |
1429 | static void build_wdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
1430 | struct ScsiReqBlk *srb) | |
1431 | { | |
1432 | u8 wide = ((dcb->dev_mode & NTC_DO_WIDE_NEGO) & | |
1433 | (acb->config & HCC_WIDE_CARD)) ? 1 : 0; | |
1434 | u8 *ptr = srb->msgout_buf + srb->msg_count; | |
1435 | if (srb->msg_count > 1) { | |
1436 | dprintkl(KERN_INFO, | |
1437 | "build_wdtr: msgout_buf BUSY (%i: %02x %02x)\n", | |
1438 | srb->msg_count, srb->msgout_buf[0], | |
1439 | srb->msgout_buf[1]); | |
1440 | return; | |
1441 | } | |
1442 | *ptr++ = MSG_EXTENDED; /* (01h) */ | |
1443 | *ptr++ = 2; /* length */ | |
1444 | *ptr++ = EXTENDED_WDTR; /* (03h) */ | |
1445 | *ptr++ = wide; | |
1446 | srb->msg_count += 4; | |
1447 | srb->state |= SRB_DO_WIDE_NEGO; | |
1448 | } | |
1449 | ||
1450 | ||
1451 | #if 0 | |
1452 | /* Timer to work around chip flaw: When selecting and the bus is | |
1453 | * busy, we sometimes miss a Selection timeout IRQ */ | |
1454 | void selection_timeout_missed(unsigned long ptr); | |
1455 | /* Sets the timer to wake us up */ | |
1456 | static void selto_timer(struct AdapterCtlBlk *acb) | |
1457 | { | |
1458 | if (timer_pending(&acb->selto_timer)) | |
1459 | return; | |
1460 | acb->selto_timer.function = selection_timeout_missed; | |
1461 | acb->selto_timer.data = (unsigned long) acb; | |
1462 | if (time_before | |
1463 | (jiffies + HZ, acb->scsi_host->last_reset + HZ / 2)) | |
1464 | acb->selto_timer.expires = | |
1465 | acb->scsi_host->last_reset + HZ / 2 + 1; | |
1466 | else | |
1467 | acb->selto_timer.expires = jiffies + HZ + 1; | |
1468 | add_timer(&acb->selto_timer); | |
1469 | } | |
1470 | ||
1471 | ||
1472 | void selection_timeout_missed(unsigned long ptr) | |
1473 | { | |
1474 | unsigned long flags; | |
1475 | struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)ptr; | |
1476 | struct ScsiReqBlk *srb; | |
1477 | dprintkl(KERN_DEBUG, "Chip forgot to produce SelTO IRQ!\n"); | |
1478 | if (!acb->active_dcb || !acb->active_dcb->active_srb) { | |
1479 | dprintkl(KERN_DEBUG, "... but no cmd pending? Oops!\n"); | |
1480 | return; | |
1481 | } | |
1482 | DC395x_LOCK_IO(acb->scsi_host, flags); | |
1483 | srb = acb->active_dcb->active_srb; | |
1484 | disconnect(acb); | |
1485 | DC395x_UNLOCK_IO(acb->scsi_host, flags); | |
1486 | } | |
1487 | #endif | |
1488 | ||
1489 | ||
1490 | static u8 start_scsi(struct AdapterCtlBlk* acb, struct DeviceCtlBlk* dcb, | |
1491 | struct ScsiReqBlk* srb) | |
1492 | { | |
1493 | u16 s_stat2, return_code; | |
1494 | u8 s_stat, scsicommand, i, identify_message; | |
1495 | u8 *ptr; | |
1496 | dprintkdbg(DBG_0, "start_scsi: (pid#%li) <%02i-%i> srb=%p\n", | |
12a44162 | 1497 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun, srb); |
1da177e4 LT |
1498 | |
1499 | srb->tag_number = TAG_NONE; /* acb->tag_max_num: had error read in eeprom */ | |
1500 | ||
1501 | s_stat = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL); | |
1502 | s_stat2 = 0; | |
1503 | s_stat2 = DC395x_read16(acb, TRM_S1040_SCSI_STATUS); | |
1504 | #if 1 | |
1505 | if (s_stat & 0x20 /* s_stat2 & 0x02000 */ ) { | |
1506 | dprintkdbg(DBG_KG, "start_scsi: (pid#%li) BUSY %02x %04x\n", | |
12a44162 | 1507 | srb->cmd->serial_number, s_stat, s_stat2); |
1da177e4 LT |
1508 | /* |
1509 | * Try anyway? | |
1510 | * | |
1511 | * We could, BUT: Sometimes the TRM_S1040 misses to produce a Selection | |
1512 | * Timeout, a Disconnect or a Reselction IRQ, so we would be screwed! | |
1513 | * (This is likely to be a bug in the hardware. Obviously, most people | |
1514 | * only have one initiator per SCSI bus.) | |
1515 | * Instead let this fail and have the timer make sure the command is | |
1516 | * tried again after a short time | |
1517 | */ | |
1518 | /*selto_timer (acb); */ | |
1519 | return 1; | |
1520 | } | |
1521 | #endif | |
1522 | if (acb->active_dcb) { | |
1523 | dprintkl(KERN_DEBUG, "start_scsi: (pid#%li) Attempt to start a" | |
1524 | "command while another command (pid#%li) is active.", | |
12a44162 | 1525 | srb->cmd->serial_number, |
1da177e4 | 1526 | acb->active_dcb->active_srb ? |
12a44162 | 1527 | acb->active_dcb->active_srb->cmd->serial_number : 0); |
1da177e4 LT |
1528 | return 1; |
1529 | } | |
1530 | if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) { | |
1531 | dprintkdbg(DBG_KG, "start_scsi: (pid#%li) Failed (busy)\n", | |
12a44162 | 1532 | srb->cmd->serial_number); |
1da177e4 LT |
1533 | return 1; |
1534 | } | |
1535 | /* Allow starting of SCSI commands half a second before we allow the mid-level | |
1536 | * to queue them again after a reset */ | |
1537 | if (time_before(jiffies, acb->scsi_host->last_reset - HZ / 2)) { | |
1538 | dprintkdbg(DBG_KG, "start_scsi: Refuse cmds (reset wait)\n"); | |
1539 | return 1; | |
1540 | } | |
1541 | ||
1542 | /* Flush FIFO */ | |
1543 | clear_fifo(acb, "start_scsi"); | |
1544 | DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id); | |
1545 | DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id); | |
1546 | DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period); | |
1547 | DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset); | |
1548 | srb->scsi_phase = PH_BUS_FREE; /* initial phase */ | |
1549 | ||
1550 | identify_message = dcb->identify_msg; | |
1551 | /*DC395x_TRM_write8(TRM_S1040_SCSI_IDMSG, identify_message); */ | |
1552 | /* Don't allow disconnection for AUTO_REQSENSE: Cont.All.Cond.! */ | |
1553 | if (srb->flag & AUTO_REQSENSE) | |
1554 | identify_message &= 0xBF; | |
1555 | ||
1556 | if (((srb->cmd->cmnd[0] == INQUIRY) | |
1557 | || (srb->cmd->cmnd[0] == REQUEST_SENSE) | |
1558 | || (srb->flag & AUTO_REQSENSE)) | |
1559 | && (((dcb->sync_mode & WIDE_NEGO_ENABLE) | |
1560 | && !(dcb->sync_mode & WIDE_NEGO_DONE)) | |
1561 | || ((dcb->sync_mode & SYNC_NEGO_ENABLE) | |
1562 | && !(dcb->sync_mode & SYNC_NEGO_DONE))) | |
1563 | && (dcb->target_lun == 0)) { | |
1564 | srb->msgout_buf[0] = identify_message; | |
1565 | srb->msg_count = 1; | |
1566 | scsicommand = SCMD_SEL_ATNSTOP; | |
1567 | srb->state = SRB_MSGOUT; | |
1568 | #ifndef SYNC_FIRST | |
1569 | if (dcb->sync_mode & WIDE_NEGO_ENABLE | |
1570 | && dcb->inquiry7 & SCSI_INQ_WBUS16) { | |
1571 | build_wdtr(acb, dcb, srb); | |
1572 | goto no_cmd; | |
1573 | } | |
1574 | #endif | |
1575 | if (dcb->sync_mode & SYNC_NEGO_ENABLE | |
1576 | && dcb->inquiry7 & SCSI_INQ_SYNC) { | |
1577 | build_sdtr(acb, dcb, srb); | |
1578 | goto no_cmd; | |
1579 | } | |
1580 | if (dcb->sync_mode & WIDE_NEGO_ENABLE | |
1581 | && dcb->inquiry7 & SCSI_INQ_WBUS16) { | |
1582 | build_wdtr(acb, dcb, srb); | |
1583 | goto no_cmd; | |
1584 | } | |
1585 | srb->msg_count = 0; | |
1586 | } | |
1587 | /* Send identify message */ | |
1588 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, identify_message); | |
1589 | ||
1590 | scsicommand = SCMD_SEL_ATN; | |
1591 | srb->state = SRB_START_; | |
1592 | #ifndef DC395x_NO_TAGQ | |
1593 | if ((dcb->sync_mode & EN_TAG_QUEUEING) | |
1594 | && (identify_message & 0xC0)) { | |
1595 | /* Send Tag message */ | |
1596 | u32 tag_mask = 1; | |
1597 | u8 tag_number = 0; | |
1598 | while (tag_mask & dcb->tag_mask | |
1599 | && tag_number <= dcb->max_command) { | |
1600 | tag_mask = tag_mask << 1; | |
1601 | tag_number++; | |
1602 | } | |
1603 | if (tag_number >= dcb->max_command) { | |
1604 | dprintkl(KERN_WARNING, "start_scsi: (pid#%li) " | |
1605 | "Out of tags target=<%02i-%i>)\n", | |
12a44162 | 1606 | srb->cmd->serial_number, srb->cmd->device->id, |
1da177e4 LT |
1607 | srb->cmd->device->lun); |
1608 | srb->state = SRB_READY; | |
1609 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, | |
1610 | DO_HWRESELECT); | |
1611 | return 1; | |
1612 | } | |
1613 | /* Send Tag id */ | |
1614 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, MSG_SIMPLE_QTAG); | |
1615 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, tag_number); | |
1616 | dcb->tag_mask |= tag_mask; | |
1617 | srb->tag_number = tag_number; | |
1618 | scsicommand = SCMD_SEL_ATN3; | |
1619 | srb->state = SRB_START_; | |
1620 | } | |
1621 | #endif | |
1622 | /*polling:*/ | |
1623 | /* Send CDB ..command block ......... */ | |
1624 | dprintkdbg(DBG_KG, "start_scsi: (pid#%li) <%02i-%i> cmnd=0x%02x tag=%i\n", | |
12a44162 | 1625 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun, |
1da177e4 LT |
1626 | srb->cmd->cmnd[0], srb->tag_number); |
1627 | if (srb->flag & AUTO_REQSENSE) { | |
1628 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE); | |
1629 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5)); | |
1630 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0); | |
1631 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0); | |
b80ca4f7 | 1632 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
1633 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0); |
1634 | } else { | |
1635 | ptr = (u8 *)srb->cmd->cmnd; | |
1636 | for (i = 0; i < srb->cmd->cmd_len; i++) | |
1637 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++); | |
1638 | } | |
1639 | no_cmd: | |
1640 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, | |
1641 | DO_HWRESELECT | DO_DATALATCH); | |
1642 | if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) { | |
1643 | /* | |
1644 | * If start_scsi return 1: | |
1645 | * we caught an interrupt (must be reset or reselection ... ) | |
1646 | * : Let's process it first! | |
1647 | */ | |
1648 | dprintkdbg(DBG_0, "start_scsi: (pid#%li) <%02i-%i> Failed - busy\n", | |
12a44162 | 1649 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun); |
1da177e4 LT |
1650 | srb->state = SRB_READY; |
1651 | free_tag(dcb, srb); | |
1652 | srb->msg_count = 0; | |
1653 | return_code = 1; | |
1654 | /* This IRQ should NOT get lost, as we did not acknowledge it */ | |
1655 | } else { | |
1656 | /* | |
1657 | * If start_scsi returns 0: | |
1658 | * we know that the SCSI processor is free | |
1659 | */ | |
1660 | srb->scsi_phase = PH_BUS_FREE; /* initial phase */ | |
1661 | dcb->active_srb = srb; | |
1662 | acb->active_dcb = dcb; | |
1663 | return_code = 0; | |
1664 | /* it's important for atn stop */ | |
1665 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, | |
1666 | DO_DATALATCH | DO_HWRESELECT); | |
1667 | /* SCSI command */ | |
1668 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, scsicommand); | |
1669 | } | |
1670 | return return_code; | |
1671 | } | |
1672 | ||
1673 | ||
1674 | #define DC395x_ENABLE_MSGOUT \ | |
1675 | DC395x_write16 (acb, TRM_S1040_SCSI_CONTROL, DO_SETATN); \ | |
1676 | srb->state |= SRB_MSGOUT | |
1677 | ||
1678 | ||
1679 | /* abort command */ | |
1680 | static inline void enable_msgout_abort(struct AdapterCtlBlk *acb, | |
1681 | struct ScsiReqBlk *srb) | |
1682 | { | |
1683 | srb->msgout_buf[0] = ABORT; | |
1684 | srb->msg_count = 1; | |
1685 | DC395x_ENABLE_MSGOUT; | |
1686 | srb->state &= ~SRB_MSGIN; | |
1687 | srb->state |= SRB_MSGOUT; | |
1688 | } | |
1689 | ||
1690 | ||
1691 | /** | |
1692 | * dc395x_handle_interrupt - Handle an interrupt that has been confirmed to | |
1693 | * have been triggered for this card. | |
1694 | * | |
1695 | * @acb: a pointer to the adpter control block | |
1696 | * @scsi_status: the status return when we checked the card | |
1697 | **/ | |
1698 | static void dc395x_handle_interrupt(struct AdapterCtlBlk *acb, | |
1699 | u16 scsi_status) | |
1700 | { | |
1701 | struct DeviceCtlBlk *dcb; | |
1702 | struct ScsiReqBlk *srb; | |
1703 | u16 phase; | |
1704 | u8 scsi_intstatus; | |
1705 | unsigned long flags; | |
1706 | void (*dc395x_statev)(struct AdapterCtlBlk *, struct ScsiReqBlk *, | |
1707 | u16 *); | |
1708 | ||
1709 | DC395x_LOCK_IO(acb->scsi_host, flags); | |
1710 | ||
1711 | /* This acknowledges the IRQ */ | |
1712 | scsi_intstatus = DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS); | |
1713 | if ((scsi_status & 0x2007) == 0x2002) | |
1714 | dprintkl(KERN_DEBUG, | |
1715 | "COP after COP completed? %04x\n", scsi_status); | |
1716 | if (debug_enabled(DBG_KG)) { | |
1717 | if (scsi_intstatus & INT_SELTIMEOUT) | |
1718 | dprintkdbg(DBG_KG, "handle_interrupt: Selection timeout\n"); | |
1719 | } | |
1720 | /*dprintkl(KERN_DEBUG, "handle_interrupt: intstatus = 0x%02x ", scsi_intstatus); */ | |
1721 | ||
1722 | if (timer_pending(&acb->selto_timer)) | |
1723 | del_timer(&acb->selto_timer); | |
1724 | ||
1725 | if (scsi_intstatus & (INT_SELTIMEOUT | INT_DISCONNECT)) { | |
1726 | disconnect(acb); /* bus free interrupt */ | |
1727 | goto out_unlock; | |
1728 | } | |
1729 | if (scsi_intstatus & INT_RESELECTED) { | |
1730 | reselect(acb); | |
1731 | goto out_unlock; | |
1732 | } | |
1733 | if (scsi_intstatus & INT_SELECT) { | |
1734 | dprintkl(KERN_INFO, "Host does not support target mode!\n"); | |
1735 | goto out_unlock; | |
1736 | } | |
1737 | if (scsi_intstatus & INT_SCSIRESET) { | |
1738 | scsi_reset_detect(acb); | |
1739 | goto out_unlock; | |
1740 | } | |
1741 | if (scsi_intstatus & (INT_BUSSERVICE | INT_CMDDONE)) { | |
1742 | dcb = acb->active_dcb; | |
1743 | if (!dcb) { | |
1744 | dprintkl(KERN_DEBUG, | |
1745 | "Oops: BusService (%04x %02x) w/o ActiveDCB!\n", | |
1746 | scsi_status, scsi_intstatus); | |
1747 | goto out_unlock; | |
1748 | } | |
1749 | srb = dcb->active_srb; | |
1750 | if (dcb->flag & ABORT_DEV_) { | |
1751 | dprintkdbg(DBG_0, "MsgOut Abort Device.....\n"); | |
1752 | enable_msgout_abort(acb, srb); | |
1753 | } | |
1754 | ||
1755 | /* software sequential machine */ | |
1756 | phase = (u16)srb->scsi_phase; | |
1757 | ||
1758 | /* | |
1759 | * 62037 or 62137 | |
1760 | * call dc395x_scsi_phase0[]... "phase entry" | |
1761 | * handle every phase before start transfer | |
1762 | */ | |
1763 | /* data_out_phase0, phase:0 */ | |
1764 | /* data_in_phase0, phase:1 */ | |
1765 | /* command_phase0, phase:2 */ | |
1766 | /* status_phase0, phase:3 */ | |
1767 | /* nop0, phase:4 PH_BUS_FREE .. initial phase */ | |
1768 | /* nop0, phase:5 PH_BUS_FREE .. initial phase */ | |
1769 | /* msgout_phase0, phase:6 */ | |
1770 | /* msgin_phase0, phase:7 */ | |
1771 | dc395x_statev = dc395x_scsi_phase0[phase]; | |
1772 | dc395x_statev(acb, srb, &scsi_status); | |
1773 | ||
1774 | /* | |
1775 | * if there were any exception occured scsi_status | |
1776 | * will be modify to bus free phase new scsi_status | |
1777 | * transfer out from ... previous dc395x_statev | |
1778 | */ | |
1779 | srb->scsi_phase = scsi_status & PHASEMASK; | |
1780 | phase = (u16)scsi_status & PHASEMASK; | |
1781 | ||
1782 | /* | |
1783 | * call dc395x_scsi_phase1[]... "phase entry" handle | |
1784 | * every phase to do transfer | |
1785 | */ | |
1786 | /* data_out_phase1, phase:0 */ | |
1787 | /* data_in_phase1, phase:1 */ | |
1788 | /* command_phase1, phase:2 */ | |
1789 | /* status_phase1, phase:3 */ | |
1790 | /* nop1, phase:4 PH_BUS_FREE .. initial phase */ | |
1791 | /* nop1, phase:5 PH_BUS_FREE .. initial phase */ | |
1792 | /* msgout_phase1, phase:6 */ | |
1793 | /* msgin_phase1, phase:7 */ | |
1794 | dc395x_statev = dc395x_scsi_phase1[phase]; | |
1795 | dc395x_statev(acb, srb, &scsi_status); | |
1796 | } | |
1797 | out_unlock: | |
1798 | DC395x_UNLOCK_IO(acb->scsi_host, flags); | |
1799 | } | |
1800 | ||
1801 | ||
7d12e780 | 1802 | static irqreturn_t dc395x_interrupt(int irq, void *dev_id) |
1da177e4 | 1803 | { |
c7bec5ab | 1804 | struct AdapterCtlBlk *acb = dev_id; |
1da177e4 LT |
1805 | u16 scsi_status; |
1806 | u8 dma_status; | |
1807 | irqreturn_t handled = IRQ_NONE; | |
1808 | ||
1809 | /* | |
3a4fa0a2 | 1810 | * Check for pending interrupt |
1da177e4 LT |
1811 | */ |
1812 | scsi_status = DC395x_read16(acb, TRM_S1040_SCSI_STATUS); | |
1813 | dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS); | |
1814 | if (scsi_status & SCSIINTERRUPT) { | |
3a4fa0a2 | 1815 | /* interrupt pending - let's process it! */ |
1da177e4 LT |
1816 | dc395x_handle_interrupt(acb, scsi_status); |
1817 | handled = IRQ_HANDLED; | |
1818 | } | |
1819 | else if (dma_status & 0x20) { | |
1820 | /* Error from the DMA engine */ | |
1821 | dprintkl(KERN_INFO, "Interrupt from DMA engine: 0x%02x!\n", dma_status); | |
1822 | #if 0 | |
1823 | dprintkl(KERN_INFO, "This means DMA error! Try to handle ...\n"); | |
1824 | if (acb->active_dcb) { | |
1825 | acb->active_dcb-> flag |= ABORT_DEV_; | |
1826 | if (acb->active_dcb->active_srb) | |
1827 | enable_msgout_abort(acb, acb->active_dcb->active_srb); | |
1828 | } | |
1829 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, ABORTXFER | CLRXFIFO); | |
1830 | #else | |
1831 | dprintkl(KERN_INFO, "Ignoring DMA error (probably a bad thing) ...\n"); | |
1832 | acb = NULL; | |
1833 | #endif | |
1834 | handled = IRQ_HANDLED; | |
1835 | } | |
1836 | ||
1837 | return handled; | |
1838 | } | |
1839 | ||
1840 | ||
1841 | static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
1842 | u16 *pscsi_status) | |
1843 | { | |
12a44162 | 1844 | dprintkdbg(DBG_0, "msgout_phase0: (pid#%li)\n", srb->cmd->serial_number); |
1da177e4 LT |
1845 | if (srb->state & (SRB_UNEXPECT_RESEL + SRB_ABORT_SENT)) |
1846 | *pscsi_status = PH_BUS_FREE; /*.. initial phase */ | |
1847 | ||
1848 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
1849 | srb->state &= ~SRB_MSGOUT; | |
1850 | } | |
1851 | ||
1852 | ||
1853 | static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
1854 | u16 *pscsi_status) | |
1855 | { | |
1856 | u16 i; | |
1857 | u8 *ptr; | |
12a44162 | 1858 | dprintkdbg(DBG_0, "msgout_phase1: (pid#%li)\n", srb->cmd->serial_number); |
1da177e4 LT |
1859 | |
1860 | clear_fifo(acb, "msgout_phase1"); | |
1861 | if (!(srb->state & SRB_MSGOUT)) { | |
1862 | srb->state |= SRB_MSGOUT; | |
1863 | dprintkl(KERN_DEBUG, | |
1864 | "msgout_phase1: (pid#%li) Phase unexpected\n", | |
12a44162 | 1865 | srb->cmd->serial_number); /* So what ? */ |
1da177e4 LT |
1866 | } |
1867 | if (!srb->msg_count) { | |
1868 | dprintkdbg(DBG_0, "msgout_phase1: (pid#%li) NOP msg\n", | |
12a44162 | 1869 | srb->cmd->serial_number); |
1da177e4 LT |
1870 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, MSG_NOP); |
1871 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
1872 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT); | |
1873 | return; | |
1874 | } | |
1875 | ptr = (u8 *)srb->msgout_buf; | |
1876 | for (i = 0; i < srb->msg_count; i++) | |
1877 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++); | |
1878 | srb->msg_count = 0; | |
1879 | if (srb->msgout_buf[0] == MSG_ABORT) | |
1880 | srb->state = SRB_ABORT_SENT; | |
1881 | ||
1882 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT); | |
1883 | } | |
1884 | ||
1885 | ||
1886 | static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
1887 | u16 *pscsi_status) | |
1888 | { | |
12a44162 | 1889 | dprintkdbg(DBG_0, "command_phase0: (pid#%li)\n", srb->cmd->serial_number); |
1da177e4 LT |
1890 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); |
1891 | } | |
1892 | ||
1893 | ||
1894 | static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
1895 | u16 *pscsi_status) | |
1896 | { | |
1897 | struct DeviceCtlBlk *dcb; | |
1898 | u8 *ptr; | |
1899 | u16 i; | |
12a44162 | 1900 | dprintkdbg(DBG_0, "command_phase1: (pid#%li)\n", srb->cmd->serial_number); |
1da177e4 LT |
1901 | |
1902 | clear_fifo(acb, "command_phase1"); | |
1903 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRATN); | |
1904 | if (!(srb->flag & AUTO_REQSENSE)) { | |
1905 | ptr = (u8 *)srb->cmd->cmnd; | |
1906 | for (i = 0; i < srb->cmd->cmd_len; i++) { | |
1907 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr); | |
1908 | ptr++; | |
1909 | } | |
1910 | } else { | |
1911 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE); | |
1912 | dcb = acb->active_dcb; | |
1913 | /* target id */ | |
1914 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5)); | |
1915 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0); | |
1916 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0); | |
b80ca4f7 | 1917 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
1918 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0); |
1919 | } | |
1920 | srb->state |= SRB_COMMAND; | |
1921 | /* it's important for atn stop */ | |
1922 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); | |
1923 | /* SCSI command */ | |
1924 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT); | |
1925 | } | |
1926 | ||
1927 | ||
1928 | /* | |
1929 | * Verify that the remaining space in the hw sg lists is the same as | |
1930 | * the count of remaining bytes in srb->total_xfer_length | |
1931 | */ | |
1932 | static void sg_verify_length(struct ScsiReqBlk *srb) | |
1933 | { | |
1934 | if (debug_enabled(DBG_SG)) { | |
1935 | unsigned len = 0; | |
1936 | unsigned idx = srb->sg_index; | |
1937 | struct SGentry *psge = srb->segment_x + idx; | |
1938 | for (; idx < srb->sg_count; psge++, idx++) | |
1939 | len += psge->length; | |
1940 | if (len != srb->total_xfer_length) | |
1941 | dprintkdbg(DBG_SG, | |
1942 | "Inconsistent SRB S/G lengths (Tot=%i, Count=%i) !!\n", | |
1943 | srb->total_xfer_length, len); | |
1944 | } | |
1945 | } | |
1946 | ||
1947 | ||
1948 | /* | |
1949 | * Compute the next Scatter Gather list index and adjust its length | |
cdb8c2a6 | 1950 | * and address if necessary |
1da177e4 LT |
1951 | */ |
1952 | static void sg_update_list(struct ScsiReqBlk *srb, u32 left) | |
1953 | { | |
1954 | u8 idx; | |
1da177e4 LT |
1955 | u32 xferred = srb->total_xfer_length - left; /* bytes transfered */ |
1956 | struct SGentry *psge = srb->segment_x + srb->sg_index; | |
1da177e4 LT |
1957 | |
1958 | dprintkdbg(DBG_0, | |
1959 | "sg_update_list: Transfered %i of %i bytes, %i remain\n", | |
1960 | xferred, srb->total_xfer_length, left); | |
1961 | if (xferred == 0) { | |
1962 | /* nothing to update since we did not transfer any data */ | |
1963 | return; | |
1964 | } | |
1965 | ||
1966 | sg_verify_length(srb); | |
1967 | srb->total_xfer_length = left; /* update remaining count */ | |
1968 | for (idx = srb->sg_index; idx < srb->sg_count; idx++) { | |
1969 | if (xferred >= psge->length) { | |
1970 | /* Complete SG entries done */ | |
1971 | xferred -= psge->length; | |
1972 | } else { | |
1973 | /* Partial SG entry done */ | |
1974 | psge->length -= xferred; | |
1975 | psge->address += xferred; | |
1976 | srb->sg_index = idx; | |
1977 | pci_dma_sync_single_for_device(srb->dcb-> | |
1978 | acb->dev, | |
1979 | srb->sg_bus_addr, | |
1980 | SEGMENTX_LEN, | |
1981 | PCI_DMA_TODEVICE); | |
1982 | break; | |
1983 | } | |
1984 | psge++; | |
1985 | } | |
1986 | sg_verify_length(srb); | |
1da177e4 LT |
1987 | } |
1988 | ||
1989 | ||
1990 | /* | |
1991 | * We have transfered a single byte (PIO mode?) and need to update | |
1992 | * the count of bytes remaining (total_xfer_length) and update the sg | |
1993 | * entry to either point to next byte in the current sg entry, or of | |
1994 | * already at the end to point to the start of the next sg entry | |
1995 | */ | |
1996 | static void sg_subtract_one(struct ScsiReqBlk *srb) | |
1997 | { | |
cdb8c2a6 | 1998 | sg_update_list(srb, srb->total_xfer_length - 1); |
1da177e4 LT |
1999 | } |
2000 | ||
2001 | ||
2002 | /* | |
2003 | * cleanup_after_transfer | |
2004 | * | |
2005 | * Makes sure, DMA and SCSI engine are empty, after the transfer has finished | |
2006 | * KG: Currently called from StatusPhase1 () | |
2007 | * Should probably also be called from other places | |
2008 | * Best might be to call it in DataXXPhase0, if new phase will differ | |
2009 | */ | |
2010 | static void cleanup_after_transfer(struct AdapterCtlBlk *acb, | |
2011 | struct ScsiReqBlk *srb) | |
2012 | { | |
2013 | /*DC395x_write8 (TRM_S1040_DMA_STATUS, FORCEDMACOMP); */ | |
2014 | if (DC395x_read16(acb, TRM_S1040_DMA_COMMAND) & 0x0001) { /* read */ | |
2015 | if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40)) | |
2016 | clear_fifo(acb, "cleanup/in"); | |
2017 | if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80)) | |
2018 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO); | |
2019 | } else { /* write */ | |
2020 | if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80)) | |
2021 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO); | |
2022 | if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40)) | |
2023 | clear_fifo(acb, "cleanup/out"); | |
2024 | } | |
2025 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); | |
2026 | } | |
2027 | ||
2028 | ||
2029 | /* | |
2030 | * Those no of bytes will be transfered w/ PIO through the SCSI FIFO | |
2031 | * Seems to be needed for unknown reasons; could be a hardware bug :-( | |
2032 | */ | |
2033 | #define DC395x_LASTPIO 4 | |
2034 | ||
2035 | ||
2036 | static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2037 | u16 *pscsi_status) | |
2038 | { | |
2039 | struct DeviceCtlBlk *dcb = srb->dcb; | |
2040 | u16 scsi_status = *pscsi_status; | |
2041 | u32 d_left_counter = 0; | |
2042 | dprintkdbg(DBG_0, "data_out_phase0: (pid#%li) <%02i-%i>\n", | |
12a44162 | 2043 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun); |
1da177e4 LT |
2044 | |
2045 | /* | |
2046 | * KG: We need to drain the buffers before we draw any conclusions! | |
2047 | * This means telling the DMA to push the rest into SCSI, telling | |
2048 | * SCSI to push the rest to the bus. | |
2049 | * However, the device might have been the one to stop us (phase | |
2050 | * change), and the data in transit just needs to be accounted so | |
2051 | * it can be retransmitted.) | |
2052 | */ | |
2053 | /* | |
2054 | * KG: Stop DMA engine pushing more data into the SCSI FIFO | |
2055 | * If we need more data, the DMA SG list will be freshly set up, anyway | |
2056 | */ | |
2057 | dprintkdbg(DBG_PIO, "data_out_phase0: " | |
cdb8c2a6 | 2058 | "DMA{fifocnt=0x%02x fifostat=0x%02x} " |
1da177e4 LT |
2059 | "SCSI{fifocnt=0x%02x cnt=0x%06x status=0x%04x} total=0x%06x\n", |
2060 | DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT), | |
2061 | DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT), | |
2062 | DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT), | |
2063 | DC395x_read32(acb, TRM_S1040_SCSI_COUNTER), scsi_status, | |
2064 | srb->total_xfer_length); | |
2065 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, STOPDMAXFER | CLRXFIFO); | |
2066 | ||
2067 | if (!(srb->state & SRB_XFERPAD)) { | |
2068 | if (scsi_status & PARITYERROR) | |
2069 | srb->status |= PARITY_ERROR; | |
2070 | ||
2071 | /* | |
2072 | * KG: Right, we can't just rely on the SCSI_COUNTER, because this | |
2073 | * is the no of bytes it got from the DMA engine not the no it | |
2074 | * transferred successfully to the device. (And the difference could | |
2075 | * be as much as the FIFO size, I guess ...) | |
2076 | */ | |
2077 | if (!(scsi_status & SCSIXFERDONE)) { | |
2078 | /* | |
2079 | * when data transfer from DMA FIFO to SCSI FIFO | |
2080 | * if there was some data left in SCSI FIFO | |
2081 | */ | |
2082 | d_left_counter = | |
2083 | (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & | |
2084 | 0x1F); | |
2085 | if (dcb->sync_period & WIDE_SYNC) | |
2086 | d_left_counter <<= 1; | |
2087 | ||
2088 | dprintkdbg(DBG_KG, "data_out_phase0: FIFO contains %i %s\n" | |
2089 | "SCSI{fifocnt=0x%02x cnt=0x%08x} " | |
2090 | "DMA{fifocnt=0x%04x cnt=0x%02x ctr=0x%08x}\n", | |
2091 | DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT), | |
2092 | (dcb->sync_period & WIDE_SYNC) ? "words" : "bytes", | |
2093 | DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT), | |
2094 | DC395x_read32(acb, TRM_S1040_SCSI_COUNTER), | |
2095 | DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT), | |
2096 | DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT), | |
2097 | DC395x_read32(acb, TRM_S1040_DMA_CXCNT)); | |
2098 | } | |
2099 | /* | |
b4b08e58 | 2100 | * calculate all the residue data that not yet tranfered |
1da177e4 LT |
2101 | * SCSI transfer counter + left in SCSI FIFO data |
2102 | * | |
2103 | * .....TRM_S1040_SCSI_COUNTER (24bits) | |
2104 | * The counter always decrement by one for every SCSI byte transfer. | |
2105 | * .....TRM_S1040_SCSI_FIFOCNT ( 5bits) | |
2106 | * The counter is SCSI FIFO offset counter (in units of bytes or! words) | |
2107 | */ | |
2108 | if (srb->total_xfer_length > DC395x_LASTPIO) | |
2109 | d_left_counter += | |
2110 | DC395x_read32(acb, TRM_S1040_SCSI_COUNTER); | |
2111 | ||
2112 | /* Is this a good idea? */ | |
2113 | /*clear_fifo(acb, "DOP1"); */ | |
2114 | /* KG: What is this supposed to be useful for? WIDE padding stuff? */ | |
2115 | if (d_left_counter == 1 && dcb->sync_period & WIDE_SYNC | |
a862ea31 | 2116 | && scsi_bufflen(srb->cmd) % 2) { |
1da177e4 LT |
2117 | d_left_counter = 0; |
2118 | dprintkl(KERN_INFO, | |
2119 | "data_out_phase0: Discard 1 byte (0x%02x)\n", | |
2120 | scsi_status); | |
2121 | } | |
2122 | /* | |
2123 | * KG: Oops again. Same thinko as above: The SCSI might have been | |
2124 | * faster than the DMA engine, so that it ran out of data. | |
2125 | * In that case, we have to do just nothing! | |
2126 | * But: Why the interrupt: No phase change. No XFERCNT_2_ZERO. Or? | |
2127 | */ | |
2128 | /* | |
2129 | * KG: This is nonsense: We have been WRITING data to the bus | |
2130 | * If the SCSI engine has no bytes left, how should the DMA engine? | |
2131 | */ | |
2132 | if (d_left_counter == 0) { | |
2133 | srb->total_xfer_length = 0; | |
2134 | } else { | |
2135 | /* | |
2136 | * if transfer not yet complete | |
2137 | * there were some data residue in SCSI FIFO or | |
2138 | * SCSI transfer counter not empty | |
2139 | */ | |
2140 | long oldxferred = | |
2141 | srb->total_xfer_length - d_left_counter; | |
2142 | const int diff = | |
2143 | (dcb->sync_period & WIDE_SYNC) ? 2 : 1; | |
2144 | sg_update_list(srb, d_left_counter); | |
2145 | /* KG: Most ugly hack! Apparently, this works around a chip bug */ | |
2146 | if ((srb->segment_x[srb->sg_index].length == | |
a862ea31 | 2147 | diff && scsi_sg_count(srb->cmd)) |
1da177e4 LT |
2148 | || ((oldxferred & ~PAGE_MASK) == |
2149 | (PAGE_SIZE - diff)) | |
2150 | ) { | |
2151 | dprintkl(KERN_INFO, "data_out_phase0: " | |
2152 | "Work around chip bug (%i)?\n", diff); | |
2153 | d_left_counter = | |
2154 | srb->total_xfer_length - diff; | |
2155 | sg_update_list(srb, d_left_counter); | |
2156 | /*srb->total_xfer_length -= diff; */ | |
2157 | /*srb->virt_addr += diff; */ | |
2158 | /*if (srb->cmd->use_sg) */ | |
2159 | /* srb->sg_index++; */ | |
2160 | } | |
2161 | } | |
2162 | } | |
2163 | if ((*pscsi_status & PHASEMASK) != PH_DATA_OUT) { | |
2164 | cleanup_after_transfer(acb, srb); | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | ||
2169 | static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2170 | u16 *pscsi_status) | |
2171 | { | |
2172 | dprintkdbg(DBG_0, "data_out_phase1: (pid#%li) <%02i-%i>\n", | |
12a44162 | 2173 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun); |
1da177e4 LT |
2174 | clear_fifo(acb, "data_out_phase1"); |
2175 | /* do prepare before transfer when data out phase */ | |
2176 | data_io_transfer(acb, srb, XFERDATAOUT); | |
2177 | } | |
2178 | ||
1da177e4 LT |
2179 | static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, |
2180 | u16 *pscsi_status) | |
2181 | { | |
2182 | u16 scsi_status = *pscsi_status; | |
cdb8c2a6 | 2183 | |
1da177e4 | 2184 | dprintkdbg(DBG_0, "data_in_phase0: (pid#%li) <%02i-%i>\n", |
12a44162 | 2185 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun); |
1da177e4 LT |
2186 | |
2187 | /* | |
2188 | * KG: DataIn is much more tricky than DataOut. When the device is finished | |
2189 | * and switches to another phase, the SCSI engine should be finished too. | |
2190 | * But: There might still be bytes left in its FIFO to be fetched by the DMA | |
2191 | * engine and transferred to memory. | |
2192 | * We should wait for the FIFOs to be emptied by that (is there any way to | |
2193 | * enforce this?) and then stop the DMA engine, because it might think, that | |
2194 | * there are more bytes to follow. Yes, the device might disconnect prior to | |
2195 | * having all bytes transferred! | |
2196 | * Also we should make sure that all data from the DMA engine buffer's really | |
2197 | * made its way to the system memory! Some documentation on this would not | |
2198 | * seem to be a bad idea, actually. | |
2199 | */ | |
2200 | if (!(srb->state & SRB_XFERPAD)) { | |
cdb8c2a6 GL |
2201 | u32 d_left_counter; |
2202 | unsigned int sc, fc; | |
2203 | ||
1da177e4 LT |
2204 | if (scsi_status & PARITYERROR) { |
2205 | dprintkl(KERN_INFO, "data_in_phase0: (pid#%li) " | |
12a44162 | 2206 | "Parity Error\n", srb->cmd->serial_number); |
1da177e4 LT |
2207 | srb->status |= PARITY_ERROR; |
2208 | } | |
2209 | /* | |
2210 | * KG: We should wait for the DMA FIFO to be empty ... | |
2211 | * but: it would be better to wait first for the SCSI FIFO and then the | |
2212 | * the DMA FIFO to become empty? How do we know, that the device not already | |
2213 | * sent data to the FIFO in a MsgIn phase, eg.? | |
2214 | */ | |
2215 | if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80)) { | |
2216 | #if 0 | |
2217 | int ctr = 6000000; | |
2218 | dprintkl(KERN_DEBUG, | |
2219 | "DIP0: Wait for DMA FIFO to flush ...\n"); | |
2220 | /*DC395x_write8 (TRM_S1040_DMA_CONTROL, STOPDMAXFER); */ | |
2221 | /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 7); */ | |
2222 | /*DC395x_write8 (TRM_S1040_SCSI_COMMAND, SCMD_DMA_IN); */ | |
2223 | while (! | |
2224 | (DC395x_read16(acb, TRM_S1040_DMA_FIFOSTAT) & | |
2225 | 0x80) && --ctr); | |
2226 | if (ctr < 6000000 - 1) | |
2227 | dprintkl(KERN_DEBUG | |
2228 | "DIP0: Had to wait for DMA ...\n"); | |
2229 | if (!ctr) | |
2230 | dprintkl(KERN_ERR, | |
2231 | "Deadlock in DIP0 waiting for DMA FIFO empty!!\n"); | |
2232 | /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 0); */ | |
2233 | #endif | |
2234 | dprintkdbg(DBG_KG, "data_in_phase0: " | |
2235 | "DMA{fifocnt=0x%02x fifostat=0x%02x}\n", | |
2236 | DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT), | |
2237 | DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT)); | |
2238 | } | |
2239 | /* Now: Check remainig data: The SCSI counters should tell us ... */ | |
cdb8c2a6 GL |
2240 | sc = DC395x_read32(acb, TRM_S1040_SCSI_COUNTER); |
2241 | fc = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT); | |
2242 | d_left_counter = sc + ((fc & 0x1f) | |
1da177e4 LT |
2243 | << ((srb->dcb->sync_period & WIDE_SYNC) ? 1 : |
2244 | 0)); | |
2245 | dprintkdbg(DBG_KG, "data_in_phase0: " | |
2246 | "SCSI{fifocnt=0x%02x%s ctr=0x%08x} " | |
2247 | "DMA{fifocnt=0x%02x fifostat=0x%02x ctr=0x%08x} " | |
2248 | "Remain{totxfer=%i scsi_fifo+ctr=%i}\n", | |
cdb8c2a6 | 2249 | fc, |
1da177e4 | 2250 | (srb->dcb->sync_period & WIDE_SYNC) ? "words" : "bytes", |
cdb8c2a6 GL |
2251 | sc, |
2252 | fc, | |
1da177e4 LT |
2253 | DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT), |
2254 | DC395x_read32(acb, TRM_S1040_DMA_CXCNT), | |
2255 | srb->total_xfer_length, d_left_counter); | |
2256 | #if DC395x_LASTPIO | |
2257 | /* KG: Less than or equal to 4 bytes can not be transfered via DMA, it seems. */ | |
2258 | if (d_left_counter | |
2259 | && srb->total_xfer_length <= DC395x_LASTPIO) { | |
cdb8c2a6 GL |
2260 | size_t left_io = srb->total_xfer_length; |
2261 | ||
1da177e4 LT |
2262 | /*u32 addr = (srb->segment_x[srb->sg_index].address); */ |
2263 | /*sg_update_list (srb, d_left_counter); */ | |
cdb8c2a6 GL |
2264 | dprintkdbg(DBG_PIO, "data_in_phase0: PIO (%i %s) " |
2265 | "for remaining %i bytes:", | |
2266 | fc & 0x1f, | |
1da177e4 LT |
2267 | (srb->dcb->sync_period & WIDE_SYNC) ? |
2268 | "words" : "bytes", | |
1da177e4 LT |
2269 | srb->total_xfer_length); |
2270 | if (srb->dcb->sync_period & WIDE_SYNC) | |
2271 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, | |
2272 | CFG2_WIDEFIFO); | |
cdb8c2a6 GL |
2273 | while (left_io) { |
2274 | unsigned char *virt, *base = NULL; | |
2275 | unsigned long flags = 0; | |
2276 | size_t len = left_io; | |
a862ea31 FT |
2277 | size_t offset = srb->request_length - left_io; |
2278 | ||
2279 | local_irq_save(flags); | |
2280 | /* Assumption: it's inside one page as it's at most 4 bytes and | |
2281 | I just assume it's on a 4-byte boundary */ | |
2282 | base = scsi_kmap_atomic_sg(scsi_sglist(srb->cmd), | |
2283 | srb->sg_count, &offset, &len); | |
2284 | virt = base + offset; | |
cdb8c2a6 | 2285 | |
cdb8c2a6 GL |
2286 | left_io -= len; |
2287 | ||
2288 | while (len) { | |
2289 | u8 byte; | |
2290 | byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); | |
2291 | *virt++ = byte; | |
2292 | ||
1da177e4 LT |
2293 | if (debug_enabled(DBG_PIO)) |
2294 | printk(" %02x", byte); | |
cdb8c2a6 GL |
2295 | |
2296 | d_left_counter--; | |
2297 | sg_subtract_one(srb); | |
2298 | ||
2299 | len--; | |
2300 | ||
2301 | fc = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT); | |
2302 | ||
2303 | if (fc == 0x40) { | |
2304 | left_io = 0; | |
2305 | break; | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | WARN_ON((fc != 0x40) == !d_left_counter); | |
2310 | ||
2311 | if (fc == 0x40 && (srb->dcb->sync_period & WIDE_SYNC)) { | |
2312 | /* Read the last byte ... */ | |
2313 | if (srb->total_xfer_length > 0) { | |
2314 | u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); | |
2315 | ||
2316 | *virt++ = byte; | |
2317 | srb->total_xfer_length--; | |
2318 | if (debug_enabled(DBG_PIO)) | |
2319 | printk(" %02x", byte); | |
2320 | } | |
2321 | ||
2322 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0); | |
2323 | } | |
2324 | ||
a862ea31 FT |
2325 | scsi_kunmap_atomic_sg(base); |
2326 | local_irq_restore(flags); | |
1da177e4 LT |
2327 | } |
2328 | /*printk(" %08x", *(u32*)(bus_to_virt (addr))); */ | |
2329 | /*srb->total_xfer_length = 0; */ | |
2330 | if (debug_enabled(DBG_PIO)) | |
2331 | printk("\n"); | |
2332 | } | |
2333 | #endif /* DC395x_LASTPIO */ | |
2334 | ||
2335 | #if 0 | |
2336 | /* | |
2337 | * KG: This was in DATAOUT. Does it also belong here? | |
2338 | * Nobody seems to know what counter and fifo_cnt count exactly ... | |
2339 | */ | |
2340 | if (!(scsi_status & SCSIXFERDONE)) { | |
2341 | /* | |
2342 | * when data transfer from DMA FIFO to SCSI FIFO | |
2343 | * if there was some data left in SCSI FIFO | |
2344 | */ | |
2345 | d_left_counter = | |
2346 | (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & | |
2347 | 0x1F); | |
2348 | if (srb->dcb->sync_period & WIDE_SYNC) | |
2349 | d_left_counter <<= 1; | |
2350 | /* | |
2351 | * if WIDE scsi SCSI FIFOCNT unit is word !!! | |
2352 | * so need to *= 2 | |
2353 | * KG: Seems to be correct ... | |
2354 | */ | |
2355 | } | |
2356 | #endif | |
2357 | /* KG: This should not be needed any more! */ | |
2358 | if (d_left_counter == 0 | |
2359 | || (scsi_status & SCSIXFERCNT_2_ZERO)) { | |
2360 | #if 0 | |
2361 | int ctr = 6000000; | |
2362 | u8 TempDMAstatus; | |
2363 | do { | |
2364 | TempDMAstatus = | |
2365 | DC395x_read8(acb, TRM_S1040_DMA_STATUS); | |
2366 | } while (!(TempDMAstatus & DMAXFERCOMP) && --ctr); | |
2367 | if (!ctr) | |
2368 | dprintkl(KERN_ERR, | |
2369 | "Deadlock in DataInPhase0 waiting for DMA!!\n"); | |
2370 | srb->total_xfer_length = 0; | |
2371 | #endif | |
2372 | srb->total_xfer_length = d_left_counter; | |
2373 | } else { /* phase changed */ | |
2374 | /* | |
2375 | * parsing the case: | |
2376 | * when a transfer not yet complete | |
2377 | * but be disconnected by target | |
2378 | * if transfer not yet complete | |
2379 | * there were some data residue in SCSI FIFO or | |
2380 | * SCSI transfer counter not empty | |
2381 | */ | |
2382 | sg_update_list(srb, d_left_counter); | |
2383 | } | |
2384 | } | |
2385 | /* KG: The target may decide to disconnect: Empty FIFO before! */ | |
2386 | if ((*pscsi_status & PHASEMASK) != PH_DATA_IN) { | |
2387 | cleanup_after_transfer(acb, srb); | |
2388 | } | |
2389 | } | |
2390 | ||
2391 | ||
2392 | static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2393 | u16 *pscsi_status) | |
2394 | { | |
2395 | dprintkdbg(DBG_0, "data_in_phase1: (pid#%li) <%02i-%i>\n", | |
12a44162 | 2396 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun); |
1da177e4 LT |
2397 | data_io_transfer(acb, srb, XFERDATAIN); |
2398 | } | |
2399 | ||
2400 | ||
2401 | static void data_io_transfer(struct AdapterCtlBlk *acb, | |
2402 | struct ScsiReqBlk *srb, u16 io_dir) | |
2403 | { | |
2404 | struct DeviceCtlBlk *dcb = srb->dcb; | |
2405 | u8 bval; | |
2406 | dprintkdbg(DBG_0, | |
2407 | "data_io_transfer: (pid#%li) <%02i-%i> %c len=%i, sg=(%i/%i)\n", | |
12a44162 | 2408 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun, |
1da177e4 LT |
2409 | ((io_dir & DMACMD_DIR) ? 'r' : 'w'), |
2410 | srb->total_xfer_length, srb->sg_index, srb->sg_count); | |
2411 | if (srb == acb->tmp_srb) | |
2412 | dprintkl(KERN_ERR, "data_io_transfer: Using tmp_srb!\n"); | |
2413 | if (srb->sg_index >= srb->sg_count) { | |
2414 | /* can't happen? out of bounds error */ | |
2415 | return; | |
2416 | } | |
2417 | ||
2418 | if (srb->total_xfer_length > DC395x_LASTPIO) { | |
2419 | u8 dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS); | |
2420 | /* | |
2421 | * KG: What should we do: Use SCSI Cmd 0x90/0x92? | |
2422 | * Maybe, even ABORTXFER would be appropriate | |
2423 | */ | |
2424 | if (dma_status & XFERPENDING) { | |
2425 | dprintkl(KERN_DEBUG, "data_io_transfer: Xfer pending! " | |
2426 | "Expect trouble!\n"); | |
2427 | dump_register_info(acb, dcb, srb); | |
2428 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO); | |
2429 | } | |
2430 | /* clear_fifo(acb, "IO"); */ | |
2431 | /* | |
2432 | * load what physical address of Scatter/Gather list table | |
2433 | * want to be transfer | |
2434 | */ | |
2435 | srb->state |= SRB_DATA_XFER; | |
2436 | DC395x_write32(acb, TRM_S1040_DMA_XHIGHADDR, 0); | |
a862ea31 | 2437 | if (scsi_sg_count(srb->cmd)) { /* with S/G */ |
1da177e4 LT |
2438 | io_dir |= DMACMD_SG; |
2439 | DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR, | |
2440 | srb->sg_bus_addr + | |
2441 | sizeof(struct SGentry) * | |
2442 | srb->sg_index); | |
2443 | /* load how many bytes in the sg list table */ | |
2444 | DC395x_write32(acb, TRM_S1040_DMA_XCNT, | |
2445 | ((u32)(srb->sg_count - | |
2446 | srb->sg_index) << 3)); | |
2447 | } else { /* without S/G */ | |
2448 | io_dir &= ~DMACMD_SG; | |
2449 | DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR, | |
2450 | srb->segment_x[0].address); | |
2451 | DC395x_write32(acb, TRM_S1040_DMA_XCNT, | |
2452 | srb->segment_x[0].length); | |
2453 | } | |
2454 | /* load total transfer length (24bits) max value 16Mbyte */ | |
2455 | DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, | |
2456 | srb->total_xfer_length); | |
2457 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
2458 | if (io_dir & DMACMD_DIR) { /* read */ | |
2459 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, | |
2460 | SCMD_DMA_IN); | |
2461 | DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir); | |
2462 | } else { | |
2463 | DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir); | |
2464 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, | |
2465 | SCMD_DMA_OUT); | |
2466 | } | |
2467 | ||
2468 | } | |
2469 | #if DC395x_LASTPIO | |
2470 | else if (srb->total_xfer_length > 0) { /* The last four bytes: Do PIO */ | |
2471 | /* | |
2472 | * load what physical address of Scatter/Gather list table | |
2473 | * want to be transfer | |
2474 | */ | |
2475 | srb->state |= SRB_DATA_XFER; | |
2476 | /* load total transfer length (24bits) max value 16Mbyte */ | |
2477 | DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, | |
2478 | srb->total_xfer_length); | |
2479 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
2480 | if (io_dir & DMACMD_DIR) { /* read */ | |
2481 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, | |
2482 | SCMD_FIFO_IN); | |
2483 | } else { /* write */ | |
2484 | int ln = srb->total_xfer_length; | |
cdb8c2a6 GL |
2485 | size_t left_io = srb->total_xfer_length; |
2486 | ||
1da177e4 LT |
2487 | if (srb->dcb->sync_period & WIDE_SYNC) |
2488 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, | |
2489 | CFG2_WIDEFIFO); | |
1da177e4 | 2490 | |
cdb8c2a6 GL |
2491 | while (left_io) { |
2492 | unsigned char *virt, *base = NULL; | |
2493 | unsigned long flags = 0; | |
2494 | size_t len = left_io; | |
a862ea31 FT |
2495 | size_t offset = srb->request_length - left_io; |
2496 | ||
2497 | local_irq_save(flags); | |
2498 | /* Again, max 4 bytes */ | |
2499 | base = scsi_kmap_atomic_sg(scsi_sglist(srb->cmd), | |
2500 | srb->sg_count, &offset, &len); | |
2501 | virt = base + offset; | |
cdb8c2a6 | 2502 | |
cdb8c2a6 GL |
2503 | left_io -= len; |
2504 | ||
2505 | while (len--) { | |
2506 | if (debug_enabled(DBG_PIO)) | |
2507 | printk(" %02x", *virt); | |
1da177e4 | 2508 | |
cdb8c2a6 | 2509 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *virt++); |
1da177e4 | 2510 | |
cdb8c2a6 GL |
2511 | sg_subtract_one(srb); |
2512 | } | |
2513 | ||
a862ea31 FT |
2514 | scsi_kunmap_atomic_sg(base); |
2515 | local_irq_restore(flags); | |
1da177e4 LT |
2516 | } |
2517 | if (srb->dcb->sync_period & WIDE_SYNC) { | |
2518 | if (ln % 2) { | |
2519 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0); | |
2520 | if (debug_enabled(DBG_PIO)) | |
2521 | printk(" |00"); | |
2522 | } | |
2523 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0); | |
2524 | } | |
2525 | /*DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, ln); */ | |
2526 | if (debug_enabled(DBG_PIO)) | |
2527 | printk("\n"); | |
2528 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, | |
2529 | SCMD_FIFO_OUT); | |
2530 | } | |
2531 | } | |
2532 | #endif /* DC395x_LASTPIO */ | |
2533 | else { /* xfer pad */ | |
2534 | u8 data = 0, data2 = 0; | |
2535 | if (srb->sg_count) { | |
2536 | srb->adapter_status = H_OVER_UNDER_RUN; | |
2537 | srb->status |= OVER_RUN; | |
2538 | } | |
2539 | /* | |
2540 | * KG: despite the fact that we are using 16 bits I/O ops | |
2541 | * the SCSI FIFO is only 8 bits according to the docs | |
2542 | * (we can set bit 1 in 0x8f to serialize FIFO access ...) | |
2543 | */ | |
2544 | if (dcb->sync_period & WIDE_SYNC) { | |
2545 | DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 2); | |
2546 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, | |
2547 | CFG2_WIDEFIFO); | |
2548 | if (io_dir & DMACMD_DIR) { | |
2549 | data = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); | |
2550 | data2 = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); | |
2551 | } else { | |
2552 | /* Danger, Robinson: If you find KGs | |
2553 | * scattered over the wide disk, the driver | |
2554 | * or chip is to blame :-( */ | |
2555 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K'); | |
2556 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'G'); | |
2557 | } | |
2558 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0); | |
2559 | } else { | |
2560 | DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1); | |
2561 | /* Danger, Robinson: If you find a collection of Ks on your disk | |
2562 | * something broke :-( */ | |
2563 | if (io_dir & DMACMD_DIR) | |
2564 | data = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); | |
2565 | else | |
2566 | DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K'); | |
2567 | } | |
2568 | srb->state |= SRB_XFERPAD; | |
2569 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
2570 | /* SCSI command */ | |
2571 | bval = (io_dir & DMACMD_DIR) ? SCMD_FIFO_IN : SCMD_FIFO_OUT; | |
2572 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, bval); | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | ||
2577 | static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2578 | u16 *pscsi_status) | |
2579 | { | |
2580 | dprintkdbg(DBG_0, "status_phase0: (pid#%li) <%02i-%i>\n", | |
12a44162 | 2581 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun); |
1da177e4 LT |
2582 | srb->target_status = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); |
2583 | srb->end_message = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); /* get message */ | |
2584 | srb->state = SRB_COMPLETED; | |
2585 | *pscsi_status = PH_BUS_FREE; /*.. initial phase */ | |
2586 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
2587 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT); | |
2588 | } | |
2589 | ||
2590 | ||
2591 | static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2592 | u16 *pscsi_status) | |
2593 | { | |
2594 | dprintkdbg(DBG_0, "status_phase1: (pid#%li) <%02i-%i>\n", | |
12a44162 | 2595 | srb->cmd->serial_number, srb->cmd->device->id, srb->cmd->device->lun); |
1da177e4 LT |
2596 | srb->state = SRB_STATUS; |
2597 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
2598 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_COMP); | |
2599 | } | |
2600 | ||
2601 | ||
2602 | /* Check if the message is complete */ | |
2603 | static inline u8 msgin_completed(u8 * msgbuf, u32 len) | |
2604 | { | |
2605 | if (*msgbuf == EXTENDED_MESSAGE) { | |
2606 | if (len < 2) | |
2607 | return 0; | |
2608 | if (len < msgbuf[1] + 2) | |
2609 | return 0; | |
2610 | } else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) /* two byte messages */ | |
2611 | if (len < 2) | |
2612 | return 0; | |
2613 | return 1; | |
2614 | } | |
2615 | ||
2616 | /* reject_msg */ | |
2617 | static inline void msgin_reject(struct AdapterCtlBlk *acb, | |
2618 | struct ScsiReqBlk *srb) | |
2619 | { | |
2620 | srb->msgout_buf[0] = MESSAGE_REJECT; | |
2621 | srb->msg_count = 1; | |
2622 | DC395x_ENABLE_MSGOUT; | |
2623 | srb->state &= ~SRB_MSGIN; | |
2624 | srb->state |= SRB_MSGOUT; | |
2625 | dprintkl(KERN_INFO, "msgin_reject: 0x%02x <%02i-%i>\n", | |
2626 | srb->msgin_buf[0], | |
2627 | srb->dcb->target_id, srb->dcb->target_lun); | |
2628 | } | |
2629 | ||
2630 | ||
2631 | static struct ScsiReqBlk *msgin_qtag(struct AdapterCtlBlk *acb, | |
2632 | struct DeviceCtlBlk *dcb, u8 tag) | |
2633 | { | |
2634 | struct ScsiReqBlk *srb = NULL; | |
2635 | struct ScsiReqBlk *i; | |
2636 | dprintkdbg(DBG_0, "msgin_qtag: (pid#%li) tag=%i srb=%p\n", | |
12a44162 | 2637 | srb->cmd->serial_number, tag, srb); |
1da177e4 LT |
2638 | |
2639 | if (!(dcb->tag_mask & (1 << tag))) | |
2640 | dprintkl(KERN_DEBUG, | |
2641 | "msgin_qtag: tag_mask=0x%08x does not reserve tag %i!\n", | |
2642 | dcb->tag_mask, tag); | |
2643 | ||
2644 | if (list_empty(&dcb->srb_going_list)) | |
2645 | goto mingx0; | |
2646 | list_for_each_entry(i, &dcb->srb_going_list, list) { | |
2647 | if (i->tag_number == tag) { | |
2648 | srb = i; | |
2649 | break; | |
2650 | } | |
2651 | } | |
2652 | if (!srb) | |
2653 | goto mingx0; | |
2654 | ||
2655 | dprintkdbg(DBG_0, "msgin_qtag: (pid#%li) <%02i-%i>\n", | |
12a44162 | 2656 | srb->cmd->serial_number, srb->dcb->target_id, srb->dcb->target_lun); |
1da177e4 LT |
2657 | if (dcb->flag & ABORT_DEV_) { |
2658 | /*srb->state = SRB_ABORT_SENT; */ | |
2659 | enable_msgout_abort(acb, srb); | |
2660 | } | |
2661 | ||
2662 | if (!(srb->state & SRB_DISCONNECT)) | |
2663 | goto mingx0; | |
2664 | ||
2665 | memcpy(srb->msgin_buf, dcb->active_srb->msgin_buf, acb->msg_len); | |
2666 | srb->state |= dcb->active_srb->state; | |
2667 | srb->state |= SRB_DATA_XFER; | |
2668 | dcb->active_srb = srb; | |
2669 | /* How can we make the DORS happy? */ | |
2670 | return srb; | |
2671 | ||
2672 | mingx0: | |
2673 | srb = acb->tmp_srb; | |
2674 | srb->state = SRB_UNEXPECT_RESEL; | |
2675 | dcb->active_srb = srb; | |
2676 | srb->msgout_buf[0] = MSG_ABORT_TAG; | |
2677 | srb->msg_count = 1; | |
2678 | DC395x_ENABLE_MSGOUT; | |
2679 | dprintkl(KERN_DEBUG, "msgin_qtag: Unknown tag %i - abort\n", tag); | |
2680 | return srb; | |
2681 | } | |
2682 | ||
2683 | ||
2684 | static inline void reprogram_regs(struct AdapterCtlBlk *acb, | |
2685 | struct DeviceCtlBlk *dcb) | |
2686 | { | |
2687 | DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id); | |
2688 | DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period); | |
2689 | DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset); | |
2690 | set_xfer_rate(acb, dcb); | |
2691 | } | |
2692 | ||
2693 | ||
2694 | /* set async transfer mode */ | |
2695 | static void msgin_set_async(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb) | |
2696 | { | |
2697 | struct DeviceCtlBlk *dcb = srb->dcb; | |
2698 | dprintkl(KERN_DEBUG, "msgin_set_async: No sync transfers <%02i-%i>\n", | |
2699 | dcb->target_id, dcb->target_lun); | |
2700 | ||
2701 | dcb->sync_mode &= ~(SYNC_NEGO_ENABLE); | |
2702 | dcb->sync_mode |= SYNC_NEGO_DONE; | |
2703 | /*dcb->sync_period &= 0; */ | |
2704 | dcb->sync_offset = 0; | |
2705 | dcb->min_nego_period = 200 >> 2; /* 200ns <=> 5 MHz */ | |
2706 | srb->state &= ~SRB_DO_SYNC_NEGO; | |
2707 | reprogram_regs(acb, dcb); | |
2708 | if ((dcb->sync_mode & WIDE_NEGO_ENABLE) | |
2709 | && !(dcb->sync_mode & WIDE_NEGO_DONE)) { | |
2710 | build_wdtr(acb, dcb, srb); | |
2711 | DC395x_ENABLE_MSGOUT; | |
2712 | dprintkdbg(DBG_0, "msgin_set_async(rej): Try WDTR anyway\n"); | |
2713 | } | |
2714 | } | |
2715 | ||
2716 | ||
2717 | /* set sync transfer mode */ | |
2718 | static void msgin_set_sync(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb) | |
2719 | { | |
2720 | struct DeviceCtlBlk *dcb = srb->dcb; | |
2721 | u8 bval; | |
2722 | int fact; | |
2723 | dprintkdbg(DBG_1, "msgin_set_sync: <%02i> Sync: %ins " | |
2724 | "(%02i.%01i MHz) Offset %i\n", | |
2725 | dcb->target_id, srb->msgin_buf[3] << 2, | |
2726 | (250 / srb->msgin_buf[3]), | |
2727 | ((250 % srb->msgin_buf[3]) * 10) / srb->msgin_buf[3], | |
2728 | srb->msgin_buf[4]); | |
2729 | ||
2730 | if (srb->msgin_buf[4] > 15) | |
2731 | srb->msgin_buf[4] = 15; | |
2732 | if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO)) | |
2733 | dcb->sync_offset = 0; | |
2734 | else if (dcb->sync_offset == 0) | |
2735 | dcb->sync_offset = srb->msgin_buf[4]; | |
2736 | if (srb->msgin_buf[4] > dcb->sync_offset) | |
2737 | srb->msgin_buf[4] = dcb->sync_offset; | |
2738 | else | |
2739 | dcb->sync_offset = srb->msgin_buf[4]; | |
2740 | bval = 0; | |
2741 | while (bval < 7 && (srb->msgin_buf[3] > clock_period[bval] | |
2742 | || dcb->min_nego_period > | |
2743 | clock_period[bval])) | |
2744 | bval++; | |
2745 | if (srb->msgin_buf[3] < clock_period[bval]) | |
2746 | dprintkl(KERN_INFO, | |
2747 | "msgin_set_sync: Increase sync nego period to %ins\n", | |
2748 | clock_period[bval] << 2); | |
2749 | srb->msgin_buf[3] = clock_period[bval]; | |
2750 | dcb->sync_period &= 0xf0; | |
2751 | dcb->sync_period |= ALT_SYNC | bval; | |
2752 | dcb->min_nego_period = srb->msgin_buf[3]; | |
2753 | ||
2754 | if (dcb->sync_period & WIDE_SYNC) | |
2755 | fact = 500; | |
2756 | else | |
2757 | fact = 250; | |
2758 | ||
2759 | dprintkl(KERN_INFO, | |
2760 | "Target %02i: %s Sync: %ins Offset %i (%02i.%01i MB/s)\n", | |
2761 | dcb->target_id, (fact == 500) ? "Wide16" : "", | |
2762 | dcb->min_nego_period << 2, dcb->sync_offset, | |
2763 | (fact / dcb->min_nego_period), | |
2764 | ((fact % dcb->min_nego_period) * 10 + | |
2765 | dcb->min_nego_period / 2) / dcb->min_nego_period); | |
2766 | ||
2767 | if (!(srb->state & SRB_DO_SYNC_NEGO)) { | |
2768 | /* Reply with corrected SDTR Message */ | |
2769 | dprintkl(KERN_DEBUG, "msgin_set_sync: answer w/%ins %i\n", | |
2770 | srb->msgin_buf[3] << 2, srb->msgin_buf[4]); | |
2771 | ||
2772 | memcpy(srb->msgout_buf, srb->msgin_buf, 5); | |
2773 | srb->msg_count = 5; | |
2774 | DC395x_ENABLE_MSGOUT; | |
2775 | dcb->sync_mode |= SYNC_NEGO_DONE; | |
2776 | } else { | |
2777 | if ((dcb->sync_mode & WIDE_NEGO_ENABLE) | |
2778 | && !(dcb->sync_mode & WIDE_NEGO_DONE)) { | |
2779 | build_wdtr(acb, dcb, srb); | |
2780 | DC395x_ENABLE_MSGOUT; | |
2781 | dprintkdbg(DBG_0, "msgin_set_sync: Also try WDTR\n"); | |
2782 | } | |
2783 | } | |
2784 | srb->state &= ~SRB_DO_SYNC_NEGO; | |
2785 | dcb->sync_mode |= SYNC_NEGO_DONE | SYNC_NEGO_ENABLE; | |
2786 | ||
2787 | reprogram_regs(acb, dcb); | |
2788 | } | |
2789 | ||
2790 | ||
2791 | static inline void msgin_set_nowide(struct AdapterCtlBlk *acb, | |
2792 | struct ScsiReqBlk *srb) | |
2793 | { | |
2794 | struct DeviceCtlBlk *dcb = srb->dcb; | |
2795 | dprintkdbg(DBG_1, "msgin_set_nowide: <%02i>\n", dcb->target_id); | |
2796 | ||
2797 | dcb->sync_period &= ~WIDE_SYNC; | |
2798 | dcb->sync_mode &= ~(WIDE_NEGO_ENABLE); | |
2799 | dcb->sync_mode |= WIDE_NEGO_DONE; | |
2800 | srb->state &= ~SRB_DO_WIDE_NEGO; | |
2801 | reprogram_regs(acb, dcb); | |
2802 | if ((dcb->sync_mode & SYNC_NEGO_ENABLE) | |
2803 | && !(dcb->sync_mode & SYNC_NEGO_DONE)) { | |
2804 | build_sdtr(acb, dcb, srb); | |
2805 | DC395x_ENABLE_MSGOUT; | |
2806 | dprintkdbg(DBG_0, "msgin_set_nowide: Rejected. Try SDTR anyway\n"); | |
2807 | } | |
2808 | } | |
2809 | ||
2810 | static void msgin_set_wide(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb) | |
2811 | { | |
2812 | struct DeviceCtlBlk *dcb = srb->dcb; | |
2813 | u8 wide = (dcb->dev_mode & NTC_DO_WIDE_NEGO | |
2814 | && acb->config & HCC_WIDE_CARD) ? 1 : 0; | |
2815 | dprintkdbg(DBG_1, "msgin_set_wide: <%02i>\n", dcb->target_id); | |
2816 | ||
2817 | if (srb->msgin_buf[3] > wide) | |
2818 | srb->msgin_buf[3] = wide; | |
2819 | /* Completed */ | |
2820 | if (!(srb->state & SRB_DO_WIDE_NEGO)) { | |
2821 | dprintkl(KERN_DEBUG, | |
2822 | "msgin_set_wide: Wide nego initiated <%02i>\n", | |
2823 | dcb->target_id); | |
2824 | memcpy(srb->msgout_buf, srb->msgin_buf, 4); | |
2825 | srb->msg_count = 4; | |
2826 | srb->state |= SRB_DO_WIDE_NEGO; | |
2827 | DC395x_ENABLE_MSGOUT; | |
2828 | } | |
2829 | ||
2830 | dcb->sync_mode |= (WIDE_NEGO_ENABLE | WIDE_NEGO_DONE); | |
2831 | if (srb->msgin_buf[3] > 0) | |
2832 | dcb->sync_period |= WIDE_SYNC; | |
2833 | else | |
2834 | dcb->sync_period &= ~WIDE_SYNC; | |
2835 | srb->state &= ~SRB_DO_WIDE_NEGO; | |
2836 | /*dcb->sync_mode &= ~(WIDE_NEGO_ENABLE+WIDE_NEGO_DONE); */ | |
2837 | dprintkdbg(DBG_1, | |
2838 | "msgin_set_wide: Wide (%i bit) negotiated <%02i>\n", | |
2839 | (8 << srb->msgin_buf[3]), dcb->target_id); | |
2840 | reprogram_regs(acb, dcb); | |
2841 | if ((dcb->sync_mode & SYNC_NEGO_ENABLE) | |
2842 | && !(dcb->sync_mode & SYNC_NEGO_DONE)) { | |
2843 | build_sdtr(acb, dcb, srb); | |
2844 | DC395x_ENABLE_MSGOUT; | |
2845 | dprintkdbg(DBG_0, "msgin_set_wide: Also try SDTR.\n"); | |
2846 | } | |
2847 | } | |
2848 | ||
2849 | ||
2850 | /* | |
2851 | * extended message codes: | |
2852 | * | |
2853 | * code description | |
2854 | * | |
2855 | * 02h Reserved | |
2856 | * 00h MODIFY DATA POINTER | |
2857 | * 01h SYNCHRONOUS DATA TRANSFER REQUEST | |
2858 | * 03h WIDE DATA TRANSFER REQUEST | |
2859 | * 04h - 7Fh Reserved | |
2860 | * 80h - FFh Vendor specific | |
2861 | */ | |
2862 | static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2863 | u16 *pscsi_status) | |
2864 | { | |
2865 | struct DeviceCtlBlk *dcb = acb->active_dcb; | |
12a44162 | 2866 | dprintkdbg(DBG_0, "msgin_phase0: (pid#%li)\n", srb->cmd->serial_number); |
1da177e4 LT |
2867 | |
2868 | srb->msgin_buf[acb->msg_len++] = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); | |
2869 | if (msgin_completed(srb->msgin_buf, acb->msg_len)) { | |
2870 | /* Now eval the msg */ | |
2871 | switch (srb->msgin_buf[0]) { | |
2872 | case DISCONNECT: | |
2873 | srb->state = SRB_DISCONNECT; | |
2874 | break; | |
2875 | ||
2876 | case SIMPLE_QUEUE_TAG: | |
2877 | case HEAD_OF_QUEUE_TAG: | |
2878 | case ORDERED_QUEUE_TAG: | |
2879 | srb = | |
2880 | msgin_qtag(acb, dcb, | |
2881 | srb->msgin_buf[1]); | |
2882 | break; | |
2883 | ||
2884 | case MESSAGE_REJECT: | |
2885 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, | |
2886 | DO_CLRATN | DO_DATALATCH); | |
2887 | /* A sync nego message was rejected ! */ | |
2888 | if (srb->state & SRB_DO_SYNC_NEGO) { | |
2889 | msgin_set_async(acb, srb); | |
2890 | break; | |
2891 | } | |
2892 | /* A wide nego message was rejected ! */ | |
2893 | if (srb->state & SRB_DO_WIDE_NEGO) { | |
2894 | msgin_set_nowide(acb, srb); | |
2895 | break; | |
2896 | } | |
2897 | enable_msgout_abort(acb, srb); | |
2898 | /*srb->state |= SRB_ABORT_SENT */ | |
2899 | break; | |
2900 | ||
2901 | case EXTENDED_MESSAGE: | |
2902 | /* SDTR */ | |
2903 | if (srb->msgin_buf[1] == 3 | |
2904 | && srb->msgin_buf[2] == EXTENDED_SDTR) { | |
2905 | msgin_set_sync(acb, srb); | |
2906 | break; | |
2907 | } | |
2908 | /* WDTR */ | |
2909 | if (srb->msgin_buf[1] == 2 | |
2910 | && srb->msgin_buf[2] == EXTENDED_WDTR | |
2911 | && srb->msgin_buf[3] <= 2) { /* sanity check ... */ | |
2912 | msgin_set_wide(acb, srb); | |
2913 | break; | |
2914 | } | |
2915 | msgin_reject(acb, srb); | |
2916 | break; | |
2917 | ||
2918 | case MSG_IGNOREWIDE: | |
2919 | /* Discard wide residual */ | |
2920 | dprintkdbg(DBG_0, "msgin_phase0: Ignore Wide Residual!\n"); | |
2921 | break; | |
2922 | ||
2923 | case COMMAND_COMPLETE: | |
2924 | /* nothing has to be done */ | |
2925 | break; | |
2926 | ||
2927 | case SAVE_POINTERS: | |
2928 | /* | |
2929 | * SAVE POINTER may be ignored as we have the struct | |
2930 | * ScsiReqBlk* associated with the scsi command. | |
2931 | */ | |
2932 | dprintkdbg(DBG_0, "msgin_phase0: (pid#%li) " | |
2933 | "SAVE POINTER rem=%i Ignore\n", | |
12a44162 | 2934 | srb->cmd->serial_number, srb->total_xfer_length); |
1da177e4 LT |
2935 | break; |
2936 | ||
2937 | case RESTORE_POINTERS: | |
2938 | dprintkdbg(DBG_0, "msgin_phase0: RESTORE POINTER. Ignore\n"); | |
2939 | break; | |
2940 | ||
2941 | case ABORT: | |
2942 | dprintkdbg(DBG_0, "msgin_phase0: (pid#%li) " | |
2943 | "<%02i-%i> ABORT msg\n", | |
12a44162 | 2944 | srb->cmd->serial_number, dcb->target_id, |
1da177e4 LT |
2945 | dcb->target_lun); |
2946 | dcb->flag |= ABORT_DEV_; | |
2947 | enable_msgout_abort(acb, srb); | |
2948 | break; | |
2949 | ||
2950 | default: | |
2951 | /* reject unknown messages */ | |
2952 | if (srb->msgin_buf[0] & IDENTIFY_BASE) { | |
2953 | dprintkdbg(DBG_0, "msgin_phase0: Identify msg\n"); | |
2954 | srb->msg_count = 1; | |
2955 | srb->msgout_buf[0] = dcb->identify_msg; | |
2956 | DC395x_ENABLE_MSGOUT; | |
2957 | srb->state |= SRB_MSGOUT; | |
2958 | /*break; */ | |
2959 | } | |
2960 | msgin_reject(acb, srb); | |
2961 | } | |
2962 | ||
2963 | /* Clear counter and MsgIn state */ | |
2964 | srb->state &= ~SRB_MSGIN; | |
2965 | acb->msg_len = 0; | |
2966 | } | |
2967 | *pscsi_status = PH_BUS_FREE; | |
2968 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important ... you know! */ | |
2969 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT); | |
2970 | } | |
2971 | ||
2972 | ||
2973 | static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2974 | u16 *pscsi_status) | |
2975 | { | |
12a44162 | 2976 | dprintkdbg(DBG_0, "msgin_phase1: (pid#%li)\n", srb->cmd->serial_number); |
1da177e4 LT |
2977 | clear_fifo(acb, "msgin_phase1"); |
2978 | DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1); | |
2979 | if (!(srb->state & SRB_MSGIN)) { | |
2980 | srb->state &= ~SRB_DISCONNECT; | |
2981 | srb->state |= SRB_MSGIN; | |
2982 | } | |
2983 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
2984 | /* SCSI command */ | |
2985 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_IN); | |
2986 | } | |
2987 | ||
2988 | ||
2989 | static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2990 | u16 *pscsi_status) | |
2991 | { | |
2992 | } | |
2993 | ||
2994 | ||
2995 | static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, | |
2996 | u16 *pscsi_status) | |
2997 | { | |
2998 | } | |
2999 | ||
3000 | ||
3001 | static void set_xfer_rate(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb) | |
3002 | { | |
3003 | struct DeviceCtlBlk *i; | |
3004 | ||
3005 | /* set all lun device's period, offset */ | |
3006 | if (dcb->identify_msg & 0x07) | |
3007 | return; | |
3008 | ||
3009 | if (acb->scan_devices) { | |
3010 | current_sync_offset = dcb->sync_offset; | |
3011 | return; | |
3012 | } | |
3013 | ||
3014 | list_for_each_entry(i, &acb->dcb_list, list) | |
3015 | if (i->target_id == dcb->target_id) { | |
3016 | i->sync_period = dcb->sync_period; | |
3017 | i->sync_offset = dcb->sync_offset; | |
3018 | i->sync_mode = dcb->sync_mode; | |
3019 | i->min_nego_period = dcb->min_nego_period; | |
3020 | } | |
3021 | } | |
3022 | ||
3023 | ||
3024 | static void disconnect(struct AdapterCtlBlk *acb) | |
3025 | { | |
3026 | struct DeviceCtlBlk *dcb = acb->active_dcb; | |
3027 | struct ScsiReqBlk *srb; | |
3028 | ||
3029 | if (!dcb) { | |
3030 | dprintkl(KERN_ERR, "disconnect: No such device\n"); | |
3031 | udelay(500); | |
3032 | /* Suspend queue for a while */ | |
3033 | acb->scsi_host->last_reset = | |
3034 | jiffies + HZ / 2 + | |
3035 | HZ * acb->eeprom.delay_time; | |
3036 | clear_fifo(acb, "disconnectEx"); | |
3037 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); | |
3038 | return; | |
3039 | } | |
3040 | srb = dcb->active_srb; | |
3041 | acb->active_dcb = NULL; | |
12a44162 | 3042 | dprintkdbg(DBG_0, "disconnect: (pid#%li)\n", srb->cmd->serial_number); |
1da177e4 LT |
3043 | |
3044 | srb->scsi_phase = PH_BUS_FREE; /* initial phase */ | |
3045 | clear_fifo(acb, "disconnect"); | |
3046 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); | |
3047 | if (srb->state & SRB_UNEXPECT_RESEL) { | |
3048 | dprintkl(KERN_ERR, | |
3049 | "disconnect: Unexpected reselection <%02i-%i>\n", | |
3050 | dcb->target_id, dcb->target_lun); | |
3051 | srb->state = 0; | |
3052 | waiting_process_next(acb); | |
3053 | } else if (srb->state & SRB_ABORT_SENT) { | |
3054 | dcb->flag &= ~ABORT_DEV_; | |
3055 | acb->scsi_host->last_reset = jiffies + HZ / 2 + 1; | |
3056 | dprintkl(KERN_ERR, "disconnect: SRB_ABORT_SENT\n"); | |
3057 | doing_srb_done(acb, DID_ABORT, srb->cmd, 1); | |
3058 | waiting_process_next(acb); | |
3059 | } else { | |
3060 | if ((srb->state & (SRB_START_ + SRB_MSGOUT)) | |
3061 | || !(srb-> | |
3062 | state & (SRB_DISCONNECT + SRB_COMPLETED))) { | |
3063 | /* | |
3064 | * Selection time out | |
3065 | * SRB_START_ || SRB_MSGOUT || (!SRB_DISCONNECT && !SRB_COMPLETED) | |
3066 | */ | |
3067 | /* Unexp. Disc / Sel Timeout */ | |
3068 | if (srb->state != SRB_START_ | |
3069 | && srb->state != SRB_MSGOUT) { | |
3070 | srb->state = SRB_READY; | |
3071 | dprintkl(KERN_DEBUG, | |
3072 | "disconnect: (pid#%li) Unexpected\n", | |
12a44162 | 3073 | srb->cmd->serial_number); |
1da177e4 LT |
3074 | srb->target_status = SCSI_STAT_SEL_TIMEOUT; |
3075 | goto disc1; | |
3076 | } else { | |
3077 | /* Normal selection timeout */ | |
3078 | dprintkdbg(DBG_KG, "disconnect: (pid#%li) " | |
12a44162 | 3079 | "<%02i-%i> SelTO\n", srb->cmd->serial_number, |
1da177e4 LT |
3080 | dcb->target_id, dcb->target_lun); |
3081 | if (srb->retry_count++ > DC395x_MAX_RETRIES | |
3082 | || acb->scan_devices) { | |
3083 | srb->target_status = | |
3084 | SCSI_STAT_SEL_TIMEOUT; | |
3085 | goto disc1; | |
3086 | } | |
3087 | free_tag(dcb, srb); | |
3088 | srb_going_to_waiting_move(dcb, srb); | |
3089 | dprintkdbg(DBG_KG, | |
3090 | "disconnect: (pid#%li) Retry\n", | |
12a44162 | 3091 | srb->cmd->serial_number); |
1da177e4 LT |
3092 | waiting_set_timer(acb, HZ / 20); |
3093 | } | |
3094 | } else if (srb->state & SRB_DISCONNECT) { | |
3095 | u8 bval = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL); | |
3096 | /* | |
3097 | * SRB_DISCONNECT (This is what we expect!) | |
3098 | */ | |
3099 | if (bval & 0x40) { | |
3100 | dprintkdbg(DBG_0, "disconnect: SCSI bus stat " | |
3101 | " 0x%02x: ACK set! Other controllers?\n", | |
3102 | bval); | |
3103 | /* It could come from another initiator, therefore don't do much ! */ | |
3104 | } else | |
3105 | waiting_process_next(acb); | |
3106 | } else if (srb->state & SRB_COMPLETED) { | |
3107 | disc1: | |
3108 | /* | |
3109 | ** SRB_COMPLETED | |
3110 | */ | |
3111 | free_tag(dcb, srb); | |
3112 | dcb->active_srb = NULL; | |
3113 | srb->state = SRB_FREE; | |
3114 | srb_done(acb, dcb, srb); | |
3115 | } | |
3116 | } | |
3117 | } | |
3118 | ||
3119 | ||
3120 | static void reselect(struct AdapterCtlBlk *acb) | |
3121 | { | |
3122 | struct DeviceCtlBlk *dcb = acb->active_dcb; | |
3123 | struct ScsiReqBlk *srb = NULL; | |
3124 | u16 rsel_tar_lun_id; | |
3125 | u8 id, lun; | |
3126 | u8 arblostflag = 0; | |
3127 | dprintkdbg(DBG_0, "reselect: acb=%p\n", acb); | |
3128 | ||
3129 | clear_fifo(acb, "reselect"); | |
3130 | /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT | DO_DATALATCH); */ | |
3131 | /* Read Reselected Target ID and LUN */ | |
3132 | rsel_tar_lun_id = DC395x_read16(acb, TRM_S1040_SCSI_TARGETID); | |
3133 | if (dcb) { /* Arbitration lost but Reselection win */ | |
3134 | srb = dcb->active_srb; | |
3135 | if (!srb) { | |
3136 | dprintkl(KERN_DEBUG, "reselect: Arb lost Resel won, " | |
3137 | "but active_srb == NULL\n"); | |
3138 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
3139 | return; | |
3140 | } | |
3141 | /* Why the if ? */ | |
3142 | if (!acb->scan_devices) { | |
3143 | dprintkdbg(DBG_KG, "reselect: (pid#%li) <%02i-%i> " | |
3144 | "Arb lost but Resel win rsel=%i stat=0x%04x\n", | |
12a44162 | 3145 | srb->cmd->serial_number, dcb->target_id, |
1da177e4 LT |
3146 | dcb->target_lun, rsel_tar_lun_id, |
3147 | DC395x_read16(acb, TRM_S1040_SCSI_STATUS)); | |
3148 | arblostflag = 1; | |
3149 | /*srb->state |= SRB_DISCONNECT; */ | |
3150 | ||
3151 | srb->state = SRB_READY; | |
3152 | free_tag(dcb, srb); | |
3153 | srb_going_to_waiting_move(dcb, srb); | |
3154 | waiting_set_timer(acb, HZ / 20); | |
3155 | ||
3156 | /* return; */ | |
3157 | } | |
3158 | } | |
3159 | /* Read Reselected Target Id and LUN */ | |
3160 | if (!(rsel_tar_lun_id & (IDENTIFY_BASE << 8))) | |
3161 | dprintkl(KERN_DEBUG, "reselect: Expects identify msg. " | |
3162 | "Got %i!\n", rsel_tar_lun_id); | |
3163 | id = rsel_tar_lun_id & 0xff; | |
3164 | lun = (rsel_tar_lun_id >> 8) & 7; | |
3165 | dcb = find_dcb(acb, id, lun); | |
3166 | if (!dcb) { | |
3167 | dprintkl(KERN_ERR, "reselect: From non existent device " | |
3168 | "<%02i-%i>\n", id, lun); | |
3169 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
3170 | return; | |
3171 | } | |
3172 | acb->active_dcb = dcb; | |
3173 | ||
3174 | if (!(dcb->dev_mode & NTC_DO_DISCONNECT)) | |
3175 | dprintkl(KERN_DEBUG, "reselect: in spite of forbidden " | |
3176 | "disconnection? <%02i-%i>\n", | |
3177 | dcb->target_id, dcb->target_lun); | |
3178 | ||
3179 | if (dcb->sync_mode & EN_TAG_QUEUEING /*&& !arblostflag */) { | |
3180 | srb = acb->tmp_srb; | |
3181 | dcb->active_srb = srb; | |
3182 | } else { | |
3183 | /* There can be only one! */ | |
3184 | srb = dcb->active_srb; | |
3185 | if (!srb || !(srb->state & SRB_DISCONNECT)) { | |
3186 | /* | |
3187 | * abort command | |
3188 | */ | |
3189 | dprintkl(KERN_DEBUG, | |
3190 | "reselect: w/o disconnected cmds <%02i-%i>\n", | |
3191 | dcb->target_id, dcb->target_lun); | |
3192 | srb = acb->tmp_srb; | |
3193 | srb->state = SRB_UNEXPECT_RESEL; | |
3194 | dcb->active_srb = srb; | |
3195 | enable_msgout_abort(acb, srb); | |
3196 | } else { | |
3197 | if (dcb->flag & ABORT_DEV_) { | |
3198 | /*srb->state = SRB_ABORT_SENT; */ | |
3199 | enable_msgout_abort(acb, srb); | |
3200 | } else | |
3201 | srb->state = SRB_DATA_XFER; | |
3202 | ||
3203 | } | |
3204 | } | |
3205 | srb->scsi_phase = PH_BUS_FREE; /* initial phase */ | |
3206 | ||
3207 | /* Program HA ID, target ID, period and offset */ | |
3208 | dprintkdbg(DBG_0, "reselect: select <%i>\n", dcb->target_id); | |
3209 | DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id); /* host ID */ | |
3210 | DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id); /* target ID */ | |
3211 | DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset); /* offset */ | |
3212 | DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period); /* sync period, wide */ | |
3213 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */ | |
3214 | /* SCSI command */ | |
3215 | DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT); | |
3216 | } | |
3217 | ||
3218 | ||
3219 | static inline u8 tagq_blacklist(char *name) | |
3220 | { | |
3221 | #ifndef DC395x_NO_TAGQ | |
3222 | #if 0 | |
3223 | u8 i; | |
3224 | for (i = 0; i < BADDEVCNT; i++) | |
3225 | if (memcmp(name, DC395x_baddevname1[i], 28) == 0) | |
3226 | return 1; | |
3227 | #endif | |
3228 | return 0; | |
3229 | #else | |
3230 | return 1; | |
3231 | #endif | |
3232 | } | |
3233 | ||
3234 | ||
3235 | static void disc_tagq_set(struct DeviceCtlBlk *dcb, struct ScsiInqData *ptr) | |
3236 | { | |
3237 | /* Check for SCSI format (ANSI and Response data format) */ | |
3238 | if ((ptr->Vers & 0x07) >= 2 || (ptr->RDF & 0x0F) == 2) { | |
3239 | if ((ptr->Flags & SCSI_INQ_CMDQUEUE) | |
3240 | && (dcb->dev_mode & NTC_DO_TAG_QUEUEING) && | |
3241 | /*(dcb->dev_mode & NTC_DO_DISCONNECT) */ | |
3242 | /* ((dcb->dev_type == TYPE_DISK) | |
3243 | || (dcb->dev_type == TYPE_MOD)) && */ | |
3244 | !tagq_blacklist(((char *)ptr) + 8)) { | |
3245 | if (dcb->max_command == 1) | |
3246 | dcb->max_command = | |
3247 | dcb->acb->tag_max_num; | |
3248 | dcb->sync_mode |= EN_TAG_QUEUEING; | |
3249 | /*dcb->tag_mask = 0; */ | |
3250 | } else | |
3251 | dcb->max_command = 1; | |
3252 | } | |
3253 | } | |
3254 | ||
3255 | ||
3256 | static void add_dev(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
3257 | struct ScsiInqData *ptr) | |
3258 | { | |
3259 | u8 bval1 = ptr->DevType & SCSI_DEVTYPE; | |
3260 | dcb->dev_type = bval1; | |
3261 | /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */ | |
3262 | disc_tagq_set(dcb, ptr); | |
3263 | } | |
3264 | ||
3265 | ||
3266 | /* unmap mapped pci regions from SRB */ | |
3267 | static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb) | |
3268 | { | |
3269 | struct scsi_cmnd *cmd = srb->cmd; | |
3270 | enum dma_data_direction dir = cmd->sc_data_direction; | |
a862ea31 FT |
3271 | |
3272 | if (scsi_sg_count(cmd) && dir != PCI_DMA_NONE) { | |
1da177e4 LT |
3273 | /* unmap DC395x SG list */ |
3274 | dprintkdbg(DBG_SG, "pci_unmap_srb: list=%08x(%05x)\n", | |
3275 | srb->sg_bus_addr, SEGMENTX_LEN); | |
3276 | pci_unmap_single(acb->dev, srb->sg_bus_addr, | |
3277 | SEGMENTX_LEN, | |
3278 | PCI_DMA_TODEVICE); | |
3279 | dprintkdbg(DBG_SG, "pci_unmap_srb: segs=%i buffer=%p\n", | |
a862ea31 | 3280 | scsi_sg_count(cmd), scsi_bufflen(cmd)); |
1da177e4 | 3281 | /* unmap the sg segments */ |
a862ea31 | 3282 | scsi_dma_unmap(cmd); |
1da177e4 LT |
3283 | } |
3284 | } | |
3285 | ||
3286 | ||
3287 | /* unmap mapped pci sense buffer from SRB */ | |
3288 | static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb, | |
3289 | struct ScsiReqBlk *srb) | |
3290 | { | |
3291 | if (!(srb->flag & AUTO_REQSENSE)) | |
3292 | return; | |
3293 | /* Unmap sense buffer */ | |
3294 | dprintkdbg(DBG_SG, "pci_unmap_srb_sense: buffer=%08x\n", | |
3295 | srb->segment_x[0].address); | |
3296 | pci_unmap_single(acb->dev, srb->segment_x[0].address, | |
3297 | srb->segment_x[0].length, PCI_DMA_FROMDEVICE); | |
3298 | /* Restore SG stuff */ | |
3299 | srb->total_xfer_length = srb->xferred; | |
3300 | srb->segment_x[0].address = | |
3301 | srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address; | |
3302 | srb->segment_x[0].length = | |
3303 | srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length; | |
3304 | } | |
3305 | ||
3306 | ||
3307 | /* | |
3308 | * Complete execution of a SCSI command | |
3309 | * Signal completion to the generic SCSI driver | |
3310 | */ | |
3311 | static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
3312 | struct ScsiReqBlk *srb) | |
3313 | { | |
3314 | u8 tempcnt, status; | |
3315 | struct scsi_cmnd *cmd = srb->cmd; | |
1da177e4 | 3316 | enum dma_data_direction dir = cmd->sc_data_direction; |
9dc399de | 3317 | int ckc_only = 1; |
1da177e4 | 3318 | |
12a44162 | 3319 | dprintkdbg(DBG_1, "srb_done: (pid#%li) <%02i-%i>\n", srb->cmd->serial_number, |
1da177e4 | 3320 | srb->cmd->device->id, srb->cmd->device->lun); |
9dc399de | 3321 | dprintkdbg(DBG_SG, "srb_done: srb=%p sg=%i(%i/%i) buf=%p\n", |
a862ea31 FT |
3322 | srb, scsi_sg_count(cmd), srb->sg_index, srb->sg_count, |
3323 | scsi_sgtalbe(cmd)); | |
1da177e4 LT |
3324 | status = srb->target_status; |
3325 | if (srb->flag & AUTO_REQSENSE) { | |
3326 | dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE1\n"); | |
3327 | pci_unmap_srb_sense(acb, srb); | |
3328 | /* | |
3329 | ** target status.......................... | |
3330 | */ | |
3331 | srb->flag &= ~AUTO_REQSENSE; | |
3332 | srb->adapter_status = 0; | |
3333 | srb->target_status = CHECK_CONDITION << 1; | |
3334 | if (debug_enabled(DBG_1)) { | |
3335 | switch (cmd->sense_buffer[2] & 0x0f) { | |
3336 | case NOT_READY: | |
3337 | dprintkl(KERN_DEBUG, | |
3338 | "ReqSense: NOT_READY cmnd=0x%02x <%02i-%i> stat=%i scan=%i ", | |
3339 | cmd->cmnd[0], dcb->target_id, | |
3340 | dcb->target_lun, status, acb->scan_devices); | |
3341 | break; | |
3342 | case UNIT_ATTENTION: | |
3343 | dprintkl(KERN_DEBUG, | |
3344 | "ReqSense: UNIT_ATTENTION cmnd=0x%02x <%02i-%i> stat=%i scan=%i ", | |
3345 | cmd->cmnd[0], dcb->target_id, | |
3346 | dcb->target_lun, status, acb->scan_devices); | |
3347 | break; | |
3348 | case ILLEGAL_REQUEST: | |
3349 | dprintkl(KERN_DEBUG, | |
3350 | "ReqSense: ILLEGAL_REQUEST cmnd=0x%02x <%02i-%i> stat=%i scan=%i ", | |
3351 | cmd->cmnd[0], dcb->target_id, | |
3352 | dcb->target_lun, status, acb->scan_devices); | |
3353 | break; | |
3354 | case MEDIUM_ERROR: | |
3355 | dprintkl(KERN_DEBUG, | |
3356 | "ReqSense: MEDIUM_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ", | |
3357 | cmd->cmnd[0], dcb->target_id, | |
3358 | dcb->target_lun, status, acb->scan_devices); | |
3359 | break; | |
3360 | case HARDWARE_ERROR: | |
3361 | dprintkl(KERN_DEBUG, | |
3362 | "ReqSense: HARDWARE_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ", | |
3363 | cmd->cmnd[0], dcb->target_id, | |
3364 | dcb->target_lun, status, acb->scan_devices); | |
3365 | break; | |
3366 | } | |
3367 | if (cmd->sense_buffer[7] >= 6) | |
3368 | printk("sense=0x%02x ASC=0x%02x ASCQ=0x%02x " | |
3369 | "(0x%08x 0x%08x)\n", | |
3370 | cmd->sense_buffer[2], cmd->sense_buffer[12], | |
3371 | cmd->sense_buffer[13], | |
3372 | *((unsigned int *)(cmd->sense_buffer + 3)), | |
3373 | *((unsigned int *)(cmd->sense_buffer + 8))); | |
3374 | else | |
3375 | printk("sense=0x%02x No ASC/ASCQ (0x%08x)\n", | |
3376 | cmd->sense_buffer[2], | |
3377 | *((unsigned int *)(cmd->sense_buffer + 3))); | |
3378 | } | |
3379 | ||
3380 | if (status == (CHECK_CONDITION << 1)) { | |
3381 | cmd->result = DID_BAD_TARGET << 16; | |
3382 | goto ckc_e; | |
3383 | } | |
3384 | dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE2\n"); | |
3385 | ||
3386 | if (srb->total_xfer_length | |
3387 | && srb->total_xfer_length >= cmd->underflow) | |
3388 | cmd->result = | |
3389 | MK_RES_LNX(DRIVER_SENSE, DID_OK, | |
3390 | srb->end_message, CHECK_CONDITION); | |
3391 | /*SET_RES_DID(cmd->result,DID_OK) */ | |
3392 | else | |
3393 | cmd->result = | |
3394 | MK_RES_LNX(DRIVER_SENSE, DID_OK, | |
3395 | srb->end_message, CHECK_CONDITION); | |
3396 | ||
3397 | goto ckc_e; | |
3398 | } | |
3399 | ||
3400 | /*************************************************************/ | |
3401 | if (status) { | |
3402 | /* | |
3403 | * target status.......................... | |
3404 | */ | |
3405 | if (status_byte(status) == CHECK_CONDITION) { | |
3406 | request_sense(acb, dcb, srb); | |
3407 | return; | |
3408 | } else if (status_byte(status) == QUEUE_FULL) { | |
3409 | tempcnt = (u8)list_size(&dcb->srb_going_list); | |
3410 | dprintkl(KERN_INFO, "QUEUE_FULL for dev <%02i-%i> with %i cmnds\n", | |
3411 | dcb->target_id, dcb->target_lun, tempcnt); | |
3412 | if (tempcnt > 1) | |
3413 | tempcnt--; | |
3414 | dcb->max_command = tempcnt; | |
3415 | free_tag(dcb, srb); | |
3416 | srb_going_to_waiting_move(dcb, srb); | |
3417 | waiting_set_timer(acb, HZ / 20); | |
3418 | srb->adapter_status = 0; | |
3419 | srb->target_status = 0; | |
3420 | return; | |
3421 | } else if (status == SCSI_STAT_SEL_TIMEOUT) { | |
3422 | srb->adapter_status = H_SEL_TIMEOUT; | |
3423 | srb->target_status = 0; | |
3424 | cmd->result = DID_NO_CONNECT << 16; | |
3425 | } else { | |
3426 | srb->adapter_status = 0; | |
3427 | SET_RES_DID(cmd->result, DID_ERROR); | |
3428 | SET_RES_MSG(cmd->result, srb->end_message); | |
3429 | SET_RES_TARGET(cmd->result, status); | |
3430 | ||
3431 | } | |
3432 | } else { | |
3433 | /* | |
3434 | ** process initiator status.......................... | |
3435 | */ | |
3436 | status = srb->adapter_status; | |
3437 | if (status & H_OVER_UNDER_RUN) { | |
3438 | srb->target_status = 0; | |
3439 | SET_RES_DID(cmd->result, DID_OK); | |
3440 | SET_RES_MSG(cmd->result, srb->end_message); | |
3441 | } else if (srb->status & PARITY_ERROR) { | |
3442 | SET_RES_DID(cmd->result, DID_PARITY); | |
3443 | SET_RES_MSG(cmd->result, srb->end_message); | |
3444 | } else { /* No error */ | |
3445 | ||
3446 | srb->adapter_status = 0; | |
3447 | srb->target_status = 0; | |
3448 | SET_RES_DID(cmd->result, DID_OK); | |
3449 | } | |
3450 | } | |
3451 | ||
a862ea31 FT |
3452 | if (dir != PCI_DMA_NONE && scsi_sg_count(cmd)) |
3453 | pci_dma_sync_sg_for_cpu(acb->dev, scsi_sglist(cmd), | |
3454 | scsi_sg_count(cmd), dir); | |
3455 | ||
9dc399de | 3456 | ckc_only = 0; |
1da177e4 LT |
3457 | /* Check Error Conditions */ |
3458 | ckc_e: | |
3459 | ||
9dc399de GL |
3460 | if (cmd->cmnd[0] == INQUIRY) { |
3461 | unsigned char *base = NULL; | |
3462 | struct ScsiInqData *ptr; | |
3463 | unsigned long flags = 0; | |
a862ea31 FT |
3464 | struct scatterlist* sg = scsi_sglist(cmd); |
3465 | size_t offset = 0, len = sizeof(struct ScsiInqData); | |
9dc399de | 3466 | |
a862ea31 FT |
3467 | local_irq_save(flags); |
3468 | base = scsi_kmap_atomic_sg(sg, scsi_sg_count(cmd), &offset, &len); | |
3469 | ptr = (struct ScsiInqData *)(base + offset); | |
9dc399de GL |
3470 | |
3471 | if (!ckc_only && (cmd->result & RES_DID) == 0 | |
a862ea31 | 3472 | && cmd->cmnd[2] == 0 && scsi_bufflen(cmd) >= 8 |
9dc399de GL |
3473 | && dir != PCI_DMA_NONE && ptr && (ptr->Vers & 0x07) >= 2) |
3474 | dcb->inquiry7 = ptr->Flags; | |
3475 | ||
1da177e4 LT |
3476 | /*if( srb->cmd->cmnd[0] == INQUIRY && */ |
3477 | /* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */ | |
9dc399de GL |
3478 | if ((cmd->result == (DID_OK << 16) |
3479 | || status_byte(cmd->result) & | |
3480 | CHECK_CONDITION)) { | |
3481 | if (!dcb->init_tcq_flag) { | |
3482 | add_dev(acb, dcb, ptr); | |
3483 | dcb->init_tcq_flag = 1; | |
3484 | } | |
1da177e4 LT |
3485 | } |
3486 | ||
a862ea31 FT |
3487 | scsi_kunmap_atomic_sg(base); |
3488 | local_irq_restore(flags); | |
1da177e4 LT |
3489 | } |
3490 | ||
1da177e4 | 3491 | /* Here is the info for Doug Gilbert's sg3 ... */ |
a862ea31 | 3492 | scsi_set_resid(cmd, srb->total_xfer_length); |
1da177e4 LT |
3493 | /* This may be interpreted by sb. or not ... */ |
3494 | cmd->SCp.this_residual = srb->total_xfer_length; | |
3495 | cmd->SCp.buffers_residual = 0; | |
3496 | if (debug_enabled(DBG_KG)) { | |
3497 | if (srb->total_xfer_length) | |
3498 | dprintkdbg(DBG_KG, "srb_done: (pid#%li) <%02i-%i> " | |
3499 | "cmnd=0x%02x Missed %i bytes\n", | |
12a44162 | 3500 | cmd->serial_number, cmd->device->id, cmd->device->lun, |
1da177e4 LT |
3501 | cmd->cmnd[0], srb->total_xfer_length); |
3502 | } | |
3503 | ||
3504 | srb_going_remove(dcb, srb); | |
3505 | /* Add to free list */ | |
3506 | if (srb == acb->tmp_srb) | |
3507 | dprintkl(KERN_ERR, "srb_done: ERROR! Completed cmd with tmp_srb\n"); | |
3508 | else { | |
3509 | dprintkdbg(DBG_0, "srb_done: (pid#%li) done result=0x%08x\n", | |
12a44162 | 3510 | cmd->serial_number, cmd->result); |
1da177e4 LT |
3511 | srb_free_insert(acb, srb); |
3512 | } | |
3513 | pci_unmap_srb(acb, srb); | |
3514 | ||
3515 | cmd->scsi_done(cmd); | |
3516 | waiting_process_next(acb); | |
3517 | } | |
3518 | ||
3519 | ||
3520 | /* abort all cmds in our queues */ | |
3521 | static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_flag, | |
3522 | struct scsi_cmnd *cmd, u8 force) | |
3523 | { | |
3524 | struct DeviceCtlBlk *dcb; | |
3525 | dprintkl(KERN_INFO, "doing_srb_done: pids "); | |
3526 | ||
3527 | list_for_each_entry(dcb, &acb->dcb_list, list) { | |
3528 | struct ScsiReqBlk *srb; | |
3529 | struct ScsiReqBlk *tmp; | |
3530 | struct scsi_cmnd *p; | |
3531 | ||
3532 | list_for_each_entry_safe(srb, tmp, &dcb->srb_going_list, list) { | |
3533 | enum dma_data_direction dir; | |
3534 | int result; | |
3535 | ||
3536 | p = srb->cmd; | |
3537 | dir = p->sc_data_direction; | |
3538 | result = MK_RES(0, did_flag, 0, 0); | |
12a44162 | 3539 | printk("G:%li(%02i-%i) ", p->serial_number, |
1da177e4 LT |
3540 | p->device->id, p->device->lun); |
3541 | srb_going_remove(dcb, srb); | |
3542 | free_tag(dcb, srb); | |
3543 | srb_free_insert(acb, srb); | |
3544 | p->result = result; | |
3545 | pci_unmap_srb_sense(acb, srb); | |
3546 | pci_unmap_srb(acb, srb); | |
3547 | if (force) { | |
3548 | /* For new EH, we normally don't need to give commands back, | |
3549 | * as they all complete or all time out */ | |
3550 | p->scsi_done(p); | |
3551 | } | |
3552 | } | |
3553 | if (!list_empty(&dcb->srb_going_list)) | |
3554 | dprintkl(KERN_DEBUG, | |
3555 | "How could the ML send cmnds to the Going queue? <%02i-%i>\n", | |
3556 | dcb->target_id, dcb->target_lun); | |
3557 | if (dcb->tag_mask) | |
3558 | dprintkl(KERN_DEBUG, | |
3559 | "tag_mask for <%02i-%i> should be empty, is %08x!\n", | |
3560 | dcb->target_id, dcb->target_lun, | |
3561 | dcb->tag_mask); | |
3562 | ||
3563 | /* Waiting queue */ | |
3564 | list_for_each_entry_safe(srb, tmp, &dcb->srb_waiting_list, list) { | |
3565 | int result; | |
3566 | p = srb->cmd; | |
3567 | ||
3568 | result = MK_RES(0, did_flag, 0, 0); | |
12a44162 | 3569 | printk("W:%li<%02i-%i>", p->serial_number, p->device->id, |
1da177e4 LT |
3570 | p->device->lun); |
3571 | srb_waiting_remove(dcb, srb); | |
3572 | srb_free_insert(acb, srb); | |
3573 | p->result = result; | |
3574 | pci_unmap_srb_sense(acb, srb); | |
3575 | pci_unmap_srb(acb, srb); | |
3576 | if (force) { | |
3577 | /* For new EH, we normally don't need to give commands back, | |
3578 | * as they all complete or all time out */ | |
3579 | cmd->scsi_done(cmd); | |
3580 | } | |
3581 | } | |
3582 | if (!list_empty(&dcb->srb_waiting_list)) | |
3583 | dprintkl(KERN_DEBUG, "ML queued %i cmnds again to <%02i-%i>\n", | |
3584 | list_size(&dcb->srb_waiting_list), dcb->target_id, | |
3585 | dcb->target_lun); | |
3586 | dcb->flag &= ~ABORT_DEV_; | |
3587 | } | |
3588 | printk("\n"); | |
3589 | } | |
3590 | ||
3591 | ||
3592 | static void reset_scsi_bus(struct AdapterCtlBlk *acb) | |
3593 | { | |
3594 | dprintkdbg(DBG_0, "reset_scsi_bus: acb=%p\n", acb); | |
3595 | acb->acb_flag |= RESET_DEV; /* RESET_DETECT, RESET_DONE, RESET_DEV */ | |
3596 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI); | |
3597 | ||
3598 | while (!(DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET)) | |
3599 | /* nothing */; | |
3600 | } | |
3601 | ||
3602 | ||
3603 | static void set_basic_config(struct AdapterCtlBlk *acb) | |
3604 | { | |
3605 | u8 bval; | |
3606 | u16 wval; | |
3607 | DC395x_write8(acb, TRM_S1040_SCSI_TIMEOUT, acb->sel_timeout); | |
3608 | if (acb->config & HCC_PARITY) | |
3609 | bval = PHASELATCH | INITIATOR | BLOCKRST | PARITYCHECK; | |
3610 | else | |
3611 | bval = PHASELATCH | INITIATOR | BLOCKRST; | |
3612 | ||
3613 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG0, bval); | |
3614 | ||
3615 | /* program configuration 1: Act_Neg (+ Act_Neg_Enh? + Fast_Filter? + DataDis?) */ | |
3616 | DC395x_write8(acb, TRM_S1040_SCSI_CONFIG1, 0x03); /* was 0x13: default */ | |
3617 | /* program Host ID */ | |
3618 | DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id); | |
3619 | /* set ansynchronous transfer */ | |
3620 | DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, 0x00); | |
3621 | /* Turn LED control off */ | |
3622 | wval = DC395x_read16(acb, TRM_S1040_GEN_CONTROL) & 0x7F; | |
3623 | DC395x_write16(acb, TRM_S1040_GEN_CONTROL, wval); | |
3624 | /* DMA config */ | |
3625 | wval = DC395x_read16(acb, TRM_S1040_DMA_CONFIG) & ~DMA_FIFO_CTRL; | |
3626 | wval |= | |
3627 | DMA_FIFO_HALF_HALF | DMA_ENHANCE /*| DMA_MEM_MULTI_READ */ ; | |
3628 | DC395x_write16(acb, TRM_S1040_DMA_CONFIG, wval); | |
3629 | /* Clear pending interrupt status */ | |
3630 | DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS); | |
3631 | /* Enable SCSI interrupt */ | |
3632 | DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x7F); | |
3633 | DC395x_write8(acb, TRM_S1040_DMA_INTEN, EN_SCSIINTR | EN_DMAXFERERROR | |
3634 | /*| EN_DMAXFERABORT | EN_DMAXFERCOMP | EN_FORCEDMACOMP */ | |
3635 | ); | |
3636 | } | |
3637 | ||
3638 | ||
3639 | static void scsi_reset_detect(struct AdapterCtlBlk *acb) | |
3640 | { | |
3641 | dprintkl(KERN_INFO, "scsi_reset_detect: acb=%p\n", acb); | |
3642 | /* delay half a second */ | |
3643 | if (timer_pending(&acb->waiting_timer)) | |
3644 | del_timer(&acb->waiting_timer); | |
3645 | ||
3646 | DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE); | |
3647 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE); | |
3648 | /*DC395x_write8(acb, TRM_S1040_DMA_CONTROL,STOPDMAXFER); */ | |
3649 | udelay(500); | |
3650 | /* Maybe we locked up the bus? Then lets wait even longer ... */ | |
3651 | acb->scsi_host->last_reset = | |
3652 | jiffies + 5 * HZ / 2 + | |
3653 | HZ * acb->eeprom.delay_time; | |
3654 | ||
3655 | clear_fifo(acb, "scsi_reset_detect"); | |
3656 | set_basic_config(acb); | |
3657 | /*1.25 */ | |
3658 | /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); */ | |
3659 | ||
3660 | if (acb->acb_flag & RESET_DEV) { /* RESET_DETECT, RESET_DONE, RESET_DEV */ | |
3661 | acb->acb_flag |= RESET_DONE; | |
3662 | } else { | |
3663 | acb->acb_flag |= RESET_DETECT; | |
3664 | reset_dev_param(acb); | |
3665 | doing_srb_done(acb, DID_RESET, NULL, 1); | |
3666 | /*DC395x_RecoverSRB( acb ); */ | |
3667 | acb->active_dcb = NULL; | |
3668 | acb->acb_flag = 0; | |
3669 | waiting_process_next(acb); | |
3670 | } | |
3671 | } | |
3672 | ||
3673 | ||
3674 | static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, | |
3675 | struct ScsiReqBlk *srb) | |
3676 | { | |
3677 | struct scsi_cmnd *cmd = srb->cmd; | |
3678 | dprintkdbg(DBG_1, "request_sense: (pid#%li) <%02i-%i>\n", | |
12a44162 | 3679 | cmd->serial_number, cmd->device->id, cmd->device->lun); |
1da177e4 LT |
3680 | |
3681 | srb->flag |= AUTO_REQSENSE; | |
3682 | srb->adapter_status = 0; | |
3683 | srb->target_status = 0; | |
3684 | ||
3685 | /* KG: Can this prevent crap sense data ? */ | |
b80ca4f7 | 3686 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
3687 | |
3688 | /* Save some data */ | |
3689 | srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address = | |
3690 | srb->segment_x[0].address; | |
3691 | srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length = | |
3692 | srb->segment_x[0].length; | |
3693 | srb->xferred = srb->total_xfer_length; | |
3694 | /* srb->segment_x : a one entry of S/G list table */ | |
b80ca4f7 FT |
3695 | srb->total_xfer_length = SCSI_SENSE_BUFFERSIZE; |
3696 | srb->segment_x[0].length = SCSI_SENSE_BUFFERSIZE; | |
1da177e4 LT |
3697 | /* Map sense buffer */ |
3698 | srb->segment_x[0].address = | |
3699 | pci_map_single(acb->dev, cmd->sense_buffer, | |
b80ca4f7 | 3700 | SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE); |
1da177e4 LT |
3701 | dprintkdbg(DBG_SG, "request_sense: map buffer %p->%08x(%05x)\n", |
3702 | cmd->sense_buffer, srb->segment_x[0].address, | |
b80ca4f7 | 3703 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
3704 | srb->sg_count = 1; |
3705 | srb->sg_index = 0; | |
3706 | ||
3707 | if (start_scsi(acb, dcb, srb)) { /* Should only happen, if sb. else grabs the bus */ | |
3708 | dprintkl(KERN_DEBUG, | |
3709 | "request_sense: (pid#%li) failed <%02i-%i>\n", | |
12a44162 | 3710 | srb->cmd->serial_number, dcb->target_id, dcb->target_lun); |
1da177e4 LT |
3711 | srb_going_to_waiting_move(dcb, srb); |
3712 | waiting_set_timer(acb, HZ / 100); | |
3713 | } | |
3714 | } | |
3715 | ||
3716 | ||
3717 | /** | |
3718 | * device_alloc - Allocate a new device instance. This create the | |
3719 | * devices instance and sets up all the data items. The adapter | |
3720 | * instance is required to obtain confiuration information for this | |
3721 | * device. This does *not* add this device to the adapters device | |
3722 | * list. | |
3723 | * | |
3724 | * @acb: The adapter to obtain configuration information from. | |
3725 | * @target: The target for the new device. | |
3726 | * @lun: The lun for the new device. | |
3727 | * | |
d6e05edc | 3728 | * Return the new device if successful or NULL on failure. |
1da177e4 LT |
3729 | **/ |
3730 | static struct DeviceCtlBlk *device_alloc(struct AdapterCtlBlk *acb, | |
3731 | u8 target, u8 lun) | |
3732 | { | |
3733 | struct NvRamType *eeprom = &acb->eeprom; | |
3734 | u8 period_index = eeprom->target[target].period & 0x07; | |
3735 | struct DeviceCtlBlk *dcb; | |
3736 | ||
3737 | dcb = kmalloc(sizeof(struct DeviceCtlBlk), GFP_ATOMIC); | |
3738 | dprintkdbg(DBG_0, "device_alloc: <%02i-%i>\n", target, lun); | |
3739 | if (!dcb) | |
3740 | return NULL; | |
3741 | dcb->acb = NULL; | |
3742 | INIT_LIST_HEAD(&dcb->srb_going_list); | |
3743 | INIT_LIST_HEAD(&dcb->srb_waiting_list); | |
3744 | dcb->active_srb = NULL; | |
3745 | dcb->tag_mask = 0; | |
3746 | dcb->max_command = 1; | |
3747 | dcb->target_id = target; | |
3748 | dcb->target_lun = lun; | |
3749 | #ifndef DC395x_NO_DISCONNECT | |
3750 | dcb->identify_msg = | |
3751 | IDENTIFY(dcb->dev_mode & NTC_DO_DISCONNECT, lun); | |
3752 | #else | |
3753 | dcb->identify_msg = IDENTIFY(0, lun); | |
3754 | #endif | |
3755 | dcb->dev_mode = eeprom->target[target].cfg0; | |
3756 | dcb->inquiry7 = 0; | |
3757 | dcb->sync_mode = 0; | |
3758 | dcb->min_nego_period = clock_period[period_index]; | |
3759 | dcb->sync_period = 0; | |
3760 | dcb->sync_offset = 0; | |
3761 | dcb->flag = 0; | |
3762 | ||
3763 | #ifndef DC395x_NO_WIDE | |
3764 | if ((dcb->dev_mode & NTC_DO_WIDE_NEGO) | |
3765 | && (acb->config & HCC_WIDE_CARD)) | |
3766 | dcb->sync_mode |= WIDE_NEGO_ENABLE; | |
3767 | #endif | |
3768 | #ifndef DC395x_NO_SYNC | |
3769 | if (dcb->dev_mode & NTC_DO_SYNC_NEGO) | |
3770 | if (!(lun) || current_sync_offset) | |
3771 | dcb->sync_mode |= SYNC_NEGO_ENABLE; | |
3772 | #endif | |
3773 | if (dcb->target_lun != 0) { | |
3774 | /* Copy settings */ | |
3775 | struct DeviceCtlBlk *p; | |
3776 | list_for_each_entry(p, &acb->dcb_list, list) | |
3777 | if (p->target_id == dcb->target_id) | |
3778 | break; | |
3779 | dprintkdbg(DBG_1, | |
3780 | "device_alloc: <%02i-%i> copy from <%02i-%i>\n", | |
3781 | dcb->target_id, dcb->target_lun, | |
3782 | p->target_id, p->target_lun); | |
3783 | dcb->sync_mode = p->sync_mode; | |
3784 | dcb->sync_period = p->sync_period; | |
3785 | dcb->min_nego_period = p->min_nego_period; | |
3786 | dcb->sync_offset = p->sync_offset; | |
3787 | dcb->inquiry7 = p->inquiry7; | |
3788 | } | |
3789 | return dcb; | |
3790 | } | |
3791 | ||
3792 | ||
3793 | /** | |
3794 | * adapter_add_device - Adds the device instance to the adaptor instance. | |
3795 | * | |
3796 | * @acb: The adapter device to be updated | |
3797 | * @dcb: A newly created and intialised device instance to add. | |
3798 | **/ | |
3799 | static void adapter_add_device(struct AdapterCtlBlk *acb, | |
3800 | struct DeviceCtlBlk *dcb) | |
3801 | { | |
3802 | /* backpointer to adapter */ | |
3803 | dcb->acb = acb; | |
3804 | ||
3805 | /* set run_robin to this device if it is currently empty */ | |
3806 | if (list_empty(&acb->dcb_list)) | |
3807 | acb->dcb_run_robin = dcb; | |
3808 | ||
3809 | /* add device to list */ | |
3810 | list_add_tail(&dcb->list, &acb->dcb_list); | |
3811 | ||
3812 | /* update device maps */ | |
3813 | acb->dcb_map[dcb->target_id] |= (1 << dcb->target_lun); | |
3814 | acb->children[dcb->target_id][dcb->target_lun] = dcb; | |
3815 | } | |
3816 | ||
3817 | ||
3818 | /** | |
3819 | * adapter_remove_device - Removes the device instance from the adaptor | |
3820 | * instance. The device instance is not check in any way or freed by this. | |
3821 | * The caller is expected to take care of that. This will simply remove the | |
3822 | * device from the adapters data strcutures. | |
3823 | * | |
3824 | * @acb: The adapter device to be updated | |
3825 | * @dcb: A device that has previously been added to the adapter. | |
3826 | **/ | |
3827 | static void adapter_remove_device(struct AdapterCtlBlk *acb, | |
3828 | struct DeviceCtlBlk *dcb) | |
3829 | { | |
3830 | struct DeviceCtlBlk *i; | |
3831 | struct DeviceCtlBlk *tmp; | |
3832 | dprintkdbg(DBG_0, "adapter_remove_device: <%02i-%i>\n", | |
3833 | dcb->target_id, dcb->target_lun); | |
3834 | ||
3835 | /* fix up any pointers to this device that we have in the adapter */ | |
3836 | if (acb->active_dcb == dcb) | |
3837 | acb->active_dcb = NULL; | |
3838 | if (acb->dcb_run_robin == dcb) | |
3839 | acb->dcb_run_robin = dcb_get_next(&acb->dcb_list, dcb); | |
3840 | ||
3841 | /* unlink from list */ | |
3842 | list_for_each_entry_safe(i, tmp, &acb->dcb_list, list) | |
3843 | if (dcb == i) { | |
3844 | list_del(&i->list); | |
3845 | break; | |
3846 | } | |
3847 | ||
3848 | /* clear map and children */ | |
3849 | acb->dcb_map[dcb->target_id] &= ~(1 << dcb->target_lun); | |
3850 | acb->children[dcb->target_id][dcb->target_lun] = NULL; | |
3851 | dcb->acb = NULL; | |
3852 | } | |
3853 | ||
3854 | ||
3855 | /** | |
3856 | * adapter_remove_and_free_device - Removes a single device from the adapter | |
3857 | * and then frees the device information. | |
3858 | * | |
3859 | * @acb: The adapter device to be updated | |
3860 | * @dcb: A device that has previously been added to the adapter. | |
3861 | */ | |
3862 | static void adapter_remove_and_free_device(struct AdapterCtlBlk *acb, | |
3863 | struct DeviceCtlBlk *dcb) | |
3864 | { | |
3865 | if (list_size(&dcb->srb_going_list) > 1) { | |
3866 | dprintkdbg(DBG_1, "adapter_remove_and_free_device: <%02i-%i> " | |
3867 | "Won't remove because of %i active requests.\n", | |
3868 | dcb->target_id, dcb->target_lun, | |
3869 | list_size(&dcb->srb_going_list)); | |
3870 | return; | |
3871 | } | |
3872 | adapter_remove_device(acb, dcb); | |
3873 | kfree(dcb); | |
3874 | } | |
3875 | ||
3876 | ||
3877 | /** | |
3878 | * adapter_remove_and_free_all_devices - Removes and frees all of the | |
3879 | * devices associated with the specified adapter. | |
3880 | * | |
3881 | * @acb: The adapter from which all devices should be removed. | |
3882 | **/ | |
3883 | static void adapter_remove_and_free_all_devices(struct AdapterCtlBlk* acb) | |
3884 | { | |
3885 | struct DeviceCtlBlk *dcb; | |
3886 | struct DeviceCtlBlk *tmp; | |
3887 | dprintkdbg(DBG_1, "adapter_remove_and_free_all_devices: num=%i\n", | |
3888 | list_size(&acb->dcb_list)); | |
3889 | ||
3890 | list_for_each_entry_safe(dcb, tmp, &acb->dcb_list, list) | |
3891 | adapter_remove_and_free_device(acb, dcb); | |
3892 | } | |
3893 | ||
3894 | ||
3895 | /** | |
3896 | * dc395x_slave_alloc - Called by the scsi mid layer to tell us about a new | |
3897 | * scsi device that we need to deal with. We allocate a new device and then | |
3898 | * insert that device into the adapters device list. | |
3899 | * | |
3900 | * @scsi_device: The new scsi device that we need to handle. | |
3901 | **/ | |
3902 | static int dc395x_slave_alloc(struct scsi_device *scsi_device) | |
3903 | { | |
3904 | struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata; | |
3905 | struct DeviceCtlBlk *dcb; | |
3906 | ||
3907 | dcb = device_alloc(acb, scsi_device->id, scsi_device->lun); | |
3908 | if (!dcb) | |
3909 | return -ENOMEM; | |
3910 | adapter_add_device(acb, dcb); | |
3911 | ||
3912 | return 0; | |
3913 | } | |
3914 | ||
3915 | ||
3916 | /** | |
3917 | * dc395x_slave_destroy - Called by the scsi mid layer to tell us about a | |
3918 | * device that is going away. | |
3919 | * | |
3920 | * @scsi_device: The new scsi device that we need to handle. | |
3921 | **/ | |
3922 | static void dc395x_slave_destroy(struct scsi_device *scsi_device) | |
3923 | { | |
3924 | struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata; | |
3925 | struct DeviceCtlBlk *dcb = find_dcb(acb, scsi_device->id, scsi_device->lun); | |
3926 | if (dcb) | |
3927 | adapter_remove_and_free_device(acb, dcb); | |
3928 | } | |
3929 | ||
3930 | ||
3931 | ||
3932 | ||
3933 | /** | |
3934 | * trms1040_wait_30us: wait for 30 us | |
3935 | * | |
3936 | * Waits for 30us (using the chip by the looks of it..) | |
3937 | * | |
3938 | * @io_port: base I/O address | |
3939 | **/ | |
3940 | static void __devinit trms1040_wait_30us(unsigned long io_port) | |
3941 | { | |
3942 | /* ScsiPortStallExecution(30); wait 30 us */ | |
3943 | outb(5, io_port + TRM_S1040_GEN_TIMER); | |
3944 | while (!(inb(io_port + TRM_S1040_GEN_STATUS) & GTIMEOUT)) | |
3945 | /* nothing */ ; | |
3946 | } | |
3947 | ||
3948 | ||
3949 | /** | |
3950 | * trms1040_write_cmd - write the secified command and address to | |
3951 | * chip | |
3952 | * | |
3953 | * @io_port: base I/O address | |
3954 | * @cmd: SB + op code (command) to send | |
3955 | * @addr: address to send | |
3956 | **/ | |
3957 | static void __devinit trms1040_write_cmd(unsigned long io_port, u8 cmd, u8 addr) | |
3958 | { | |
3959 | int i; | |
3960 | u8 send_data; | |
3961 | ||
3962 | /* program SB + OP code */ | |
3963 | for (i = 0; i < 3; i++, cmd <<= 1) { | |
3964 | send_data = NVR_SELECT; | |
3965 | if (cmd & 0x04) /* Start from bit 2 */ | |
3966 | send_data |= NVR_BITOUT; | |
3967 | ||
3968 | outb(send_data, io_port + TRM_S1040_GEN_NVRAM); | |
3969 | trms1040_wait_30us(io_port); | |
3970 | outb((send_data | NVR_CLOCK), | |
3971 | io_port + TRM_S1040_GEN_NVRAM); | |
3972 | trms1040_wait_30us(io_port); | |
3973 | } | |
3974 | ||
3975 | /* send address */ | |
3976 | for (i = 0; i < 7; i++, addr <<= 1) { | |
3977 | send_data = NVR_SELECT; | |
3978 | if (addr & 0x40) /* Start from bit 6 */ | |
3979 | send_data |= NVR_BITOUT; | |
3980 | ||
3981 | outb(send_data, io_port + TRM_S1040_GEN_NVRAM); | |
3982 | trms1040_wait_30us(io_port); | |
3983 | outb((send_data | NVR_CLOCK), | |
3984 | io_port + TRM_S1040_GEN_NVRAM); | |
3985 | trms1040_wait_30us(io_port); | |
3986 | } | |
3987 | outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM); | |
3988 | trms1040_wait_30us(io_port); | |
3989 | } | |
3990 | ||
3991 | ||
3992 | /** | |
3993 | * trms1040_set_data - store a single byte in the eeprom | |
3994 | * | |
3995 | * Called from write all to write a single byte into the SSEEPROM | |
3996 | * Which is done one bit at a time. | |
3997 | * | |
3998 | * @io_port: base I/O address | |
3999 | * @addr: offset into EEPROM | |
4000 | * @byte: bytes to write | |
4001 | **/ | |
4002 | static void __devinit trms1040_set_data(unsigned long io_port, u8 addr, u8 byte) | |
4003 | { | |
4004 | int i; | |
4005 | u8 send_data; | |
4006 | ||
4007 | /* Send write command & address */ | |
4008 | trms1040_write_cmd(io_port, 0x05, addr); | |
4009 | ||
4010 | /* Write data */ | |
4011 | for (i = 0; i < 8; i++, byte <<= 1) { | |
4012 | send_data = NVR_SELECT; | |
4013 | if (byte & 0x80) /* Start from bit 7 */ | |
4014 | send_data |= NVR_BITOUT; | |
4015 | ||
4016 | outb(send_data, io_port + TRM_S1040_GEN_NVRAM); | |
4017 | trms1040_wait_30us(io_port); | |
4018 | outb((send_data | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM); | |
4019 | trms1040_wait_30us(io_port); | |
4020 | } | |
4021 | outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM); | |
4022 | trms1040_wait_30us(io_port); | |
4023 | ||
4024 | /* Disable chip select */ | |
4025 | outb(0, io_port + TRM_S1040_GEN_NVRAM); | |
4026 | trms1040_wait_30us(io_port); | |
4027 | ||
4028 | outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM); | |
4029 | trms1040_wait_30us(io_port); | |
4030 | ||
4031 | /* Wait for write ready */ | |
4032 | while (1) { | |
4033 | outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM); | |
4034 | trms1040_wait_30us(io_port); | |
4035 | ||
4036 | outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM); | |
4037 | trms1040_wait_30us(io_port); | |
4038 | ||
4039 | if (inb(io_port + TRM_S1040_GEN_NVRAM) & NVR_BITIN) | |
4040 | break; | |
4041 | } | |
4042 | ||
4043 | /* Disable chip select */ | |
4044 | outb(0, io_port + TRM_S1040_GEN_NVRAM); | |
4045 | } | |
4046 | ||
4047 | ||
4048 | /** | |
4049 | * trms1040_write_all - write 128 bytes to the eeprom | |
4050 | * | |
4051 | * Write the supplied 128 bytes to the chips SEEPROM | |
4052 | * | |
4053 | * @eeprom: the data to write | |
4054 | * @io_port: the base io port | |
4055 | **/ | |
4056 | static void __devinit trms1040_write_all(struct NvRamType *eeprom, unsigned long io_port) | |
4057 | { | |
4058 | u8 *b_eeprom = (u8 *)eeprom; | |
4059 | u8 addr; | |
4060 | ||
4061 | /* Enable SEEPROM */ | |
4062 | outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM), | |
4063 | io_port + TRM_S1040_GEN_CONTROL); | |
4064 | ||
4065 | /* write enable */ | |
4066 | trms1040_write_cmd(io_port, 0x04, 0xFF); | |
4067 | outb(0, io_port + TRM_S1040_GEN_NVRAM); | |
4068 | trms1040_wait_30us(io_port); | |
4069 | ||
4070 | /* write */ | |
4071 | for (addr = 0; addr < 128; addr++, b_eeprom++) | |
4072 | trms1040_set_data(io_port, addr, *b_eeprom); | |
4073 | ||
4074 | /* write disable */ | |
4075 | trms1040_write_cmd(io_port, 0x04, 0x00); | |
4076 | outb(0, io_port + TRM_S1040_GEN_NVRAM); | |
4077 | trms1040_wait_30us(io_port); | |
4078 | ||
4079 | /* Disable SEEPROM */ | |
4080 | outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM), | |
4081 | io_port + TRM_S1040_GEN_CONTROL); | |
4082 | } | |
4083 | ||
4084 | ||
4085 | /** | |
4086 | * trms1040_get_data - get a single byte from the eeprom | |
4087 | * | |
4088 | * Called from read all to read a single byte into the SSEEPROM | |
4089 | * Which is done one bit at a time. | |
4090 | * | |
4091 | * @io_port: base I/O address | |
4092 | * @addr: offset into SEEPROM | |
4093 | * | |
59c51591 | 4094 | * Returns the byte read. |
1da177e4 LT |
4095 | **/ |
4096 | static u8 __devinit trms1040_get_data(unsigned long io_port, u8 addr) | |
4097 | { | |
4098 | int i; | |
4099 | u8 read_byte; | |
4100 | u8 result = 0; | |
4101 | ||
4102 | /* Send read command & address */ | |
4103 | trms1040_write_cmd(io_port, 0x06, addr); | |
4104 | ||
4105 | /* read data */ | |
4106 | for (i = 0; i < 8; i++) { | |
4107 | outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM); | |
4108 | trms1040_wait_30us(io_port); | |
4109 | outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM); | |
4110 | ||
4111 | /* Get data bit while falling edge */ | |
4112 | read_byte = inb(io_port + TRM_S1040_GEN_NVRAM); | |
4113 | result <<= 1; | |
4114 | if (read_byte & NVR_BITIN) | |
4115 | result |= 1; | |
4116 | ||
4117 | trms1040_wait_30us(io_port); | |
4118 | } | |
4119 | ||
4120 | /* Disable chip select */ | |
4121 | outb(0, io_port + TRM_S1040_GEN_NVRAM); | |
4122 | return result; | |
4123 | } | |
4124 | ||
4125 | ||
4126 | /** | |
4127 | * trms1040_read_all - read all bytes from the eeprom | |
4128 | * | |
4129 | * Read the 128 bytes from the SEEPROM. | |
4130 | * | |
4131 | * @eeprom: where to store the data | |
4132 | * @io_port: the base io port | |
4133 | **/ | |
4134 | static void __devinit trms1040_read_all(struct NvRamType *eeprom, unsigned long io_port) | |
4135 | { | |
4136 | u8 *b_eeprom = (u8 *)eeprom; | |
4137 | u8 addr; | |
4138 | ||
4139 | /* Enable SEEPROM */ | |
4140 | outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM), | |
4141 | io_port + TRM_S1040_GEN_CONTROL); | |
4142 | ||
4143 | /* read details */ | |
4144 | for (addr = 0; addr < 128; addr++, b_eeprom++) | |
4145 | *b_eeprom = trms1040_get_data(io_port, addr); | |
4146 | ||
4147 | /* Disable SEEPROM */ | |
4148 | outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM), | |
4149 | io_port + TRM_S1040_GEN_CONTROL); | |
4150 | } | |
4151 | ||
4152 | ||
4153 | ||
4154 | /** | |
4155 | * check_eeprom - get and check contents of the eeprom | |
4156 | * | |
4157 | * Read seeprom 128 bytes into the memory provider in eeprom. | |
4158 | * Checks the checksum and if it's not correct it uses a set of default | |
4159 | * values. | |
4160 | * | |
4161 | * @eeprom: caller allocated strcuture to read the eeprom data into | |
4162 | * @io_port: io port to read from | |
4163 | **/ | |
4164 | static void __devinit check_eeprom(struct NvRamType *eeprom, unsigned long io_port) | |
4165 | { | |
4166 | u16 *w_eeprom = (u16 *)eeprom; | |
4167 | u16 w_addr; | |
4168 | u16 cksum; | |
4169 | u32 d_addr; | |
4170 | u32 *d_eeprom; | |
4171 | ||
4172 | trms1040_read_all(eeprom, io_port); /* read eeprom */ | |
4173 | ||
4174 | cksum = 0; | |
4175 | for (w_addr = 0, w_eeprom = (u16 *)eeprom; w_addr < 64; | |
4176 | w_addr++, w_eeprom++) | |
4177 | cksum += *w_eeprom; | |
4178 | if (cksum != 0x1234) { | |
4179 | /* | |
4180 | * Checksum is wrong. | |
4181 | * Load a set of defaults into the eeprom buffer | |
4182 | */ | |
4183 | dprintkl(KERN_WARNING, | |
4184 | "EEProm checksum error: using default values and options.\n"); | |
4185 | eeprom->sub_vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM; | |
4186 | eeprom->sub_vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8); | |
4187 | eeprom->sub_sys_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040; | |
4188 | eeprom->sub_sys_id[1] = | |
4189 | (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8); | |
4190 | eeprom->sub_class = 0x00; | |
4191 | eeprom->vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM; | |
4192 | eeprom->vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8); | |
4193 | eeprom->device_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040; | |
4194 | eeprom->device_id[1] = | |
4195 | (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8); | |
4196 | eeprom->reserved = 0x00; | |
4197 | ||
4198 | for (d_addr = 0, d_eeprom = (u32 *)eeprom->target; | |
4199 | d_addr < 16; d_addr++, d_eeprom++) | |
4200 | *d_eeprom = 0x00000077; /* cfg3,cfg2,period,cfg0 */ | |
4201 | ||
4202 | *d_eeprom++ = 0x04000F07; /* max_tag,delay_time,channel_cfg,scsi_id */ | |
4203 | *d_eeprom++ = 0x00000015; /* reserved1,boot_lun,boot_target,reserved0 */ | |
4204 | for (d_addr = 0; d_addr < 12; d_addr++, d_eeprom++) | |
4205 | *d_eeprom = 0x00; | |
4206 | ||
4207 | /* Now load defaults (maybe set by boot/module params) */ | |
4208 | set_safe_settings(); | |
4209 | fix_settings(); | |
4210 | eeprom_override(eeprom); | |
4211 | ||
4212 | eeprom->cksum = 0x00; | |
4213 | for (w_addr = 0, cksum = 0, w_eeprom = (u16 *)eeprom; | |
4214 | w_addr < 63; w_addr++, w_eeprom++) | |
4215 | cksum += *w_eeprom; | |
4216 | ||
4217 | *w_eeprom = 0x1234 - cksum; | |
4218 | trms1040_write_all(eeprom, io_port); | |
4219 | eeprom->delay_time = cfg_data[CFG_RESET_DELAY].value; | |
4220 | } else { | |
4221 | set_safe_settings(); | |
4222 | eeprom_index_to_delay(eeprom); | |
4223 | eeprom_override(eeprom); | |
4224 | } | |
4225 | } | |
4226 | ||
4227 | ||
4228 | /** | |
4229 | * print_eeprom_settings - output the eeprom settings | |
4230 | * to the kernel log so people can see what they were. | |
4231 | * | |
4232 | * @eeprom: The eeprom data strucutre to show details for. | |
4233 | **/ | |
4234 | static void __devinit print_eeprom_settings(struct NvRamType *eeprom) | |
4235 | { | |
4236 | dprintkl(KERN_INFO, "Used settings: AdapterID=%02i, Speed=%i(%02i.%01iMHz), dev_mode=0x%02x\n", | |
4237 | eeprom->scsi_id, | |
4238 | eeprom->target[0].period, | |
4239 | clock_speed[eeprom->target[0].period] / 10, | |
4240 | clock_speed[eeprom->target[0].period] % 10, | |
4241 | eeprom->target[0].cfg0); | |
4242 | dprintkl(KERN_INFO, " AdaptMode=0x%02x, Tags=%i(%02i), DelayReset=%is\n", | |
4243 | eeprom->channel_cfg, eeprom->max_tag, | |
4244 | 1 << eeprom->max_tag, eeprom->delay_time); | |
4245 | } | |
4246 | ||
4247 | ||
4248 | /* Free SG tables */ | |
4249 | static void adapter_sg_tables_free(struct AdapterCtlBlk *acb) | |
4250 | { | |
4251 | int i; | |
4252 | const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN; | |
4253 | ||
4254 | for (i = 0; i < DC395x_MAX_SRB_CNT; i += srbs_per_page) | |
c9475cb0 | 4255 | kfree(acb->srb_array[i].segment_x); |
1da177e4 LT |
4256 | } |
4257 | ||
4258 | ||
4259 | /* | |
4260 | * Allocate SG tables; as we have to pci_map them, an SG list (struct SGentry*) | |
4261 | * should never cross a page boundary */ | |
4262 | static int __devinit adapter_sg_tables_alloc(struct AdapterCtlBlk *acb) | |
4263 | { | |
4264 | const unsigned mem_needed = (DC395x_MAX_SRB_CNT+1) | |
4265 | *SEGMENTX_LEN; | |
4266 | int pages = (mem_needed+(PAGE_SIZE-1))/PAGE_SIZE; | |
4267 | const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN; | |
4268 | int srb_idx = 0; | |
4269 | unsigned i = 0; | |
8144f213 | 4270 | struct SGentry *uninitialized_var(ptr); |
1da177e4 | 4271 | |
b4b08e58 | 4272 | for (i = 0; i < DC395x_MAX_SRB_CNT; i++) |
1da177e4 | 4273 | acb->srb_array[i].segment_x = NULL; |
1da177e4 LT |
4274 | |
4275 | dprintkdbg(DBG_1, "Allocate %i pages for SG tables\n", pages); | |
4276 | while (pages--) { | |
5cbded58 | 4277 | ptr = kmalloc(PAGE_SIZE, GFP_KERNEL); |
1da177e4 LT |
4278 | if (!ptr) { |
4279 | adapter_sg_tables_free(acb); | |
4280 | return 1; | |
4281 | } | |
4282 | dprintkdbg(DBG_1, "Allocate %li bytes at %p for SG segments %i\n", | |
4283 | PAGE_SIZE, ptr, srb_idx); | |
4284 | i = 0; | |
4285 | while (i < srbs_per_page && srb_idx < DC395x_MAX_SRB_CNT) | |
4286 | acb->srb_array[srb_idx++].segment_x = | |
4287 | ptr + (i++ * DC395x_MAX_SG_LISTENTRY); | |
4288 | } | |
4289 | if (i < srbs_per_page) | |
4290 | acb->srb.segment_x = | |
4291 | ptr + (i * DC395x_MAX_SG_LISTENTRY); | |
4292 | else | |
4293 | dprintkl(KERN_DEBUG, "No space for tmsrb SG table reserved?!\n"); | |
1da177e4 LT |
4294 | return 0; |
4295 | } | |
4296 | ||
4297 | ||
4298 | ||
4299 | /** | |
4300 | * adapter_print_config - print adapter connection and termination | |
4301 | * config | |
4302 | * | |
4303 | * The io port in the adapter needs to have been set before calling | |
4304 | * this function. | |
4305 | * | |
4306 | * @acb: The adapter to print the information for. | |
4307 | **/ | |
4308 | static void __devinit adapter_print_config(struct AdapterCtlBlk *acb) | |
4309 | { | |
4310 | u8 bval; | |
4311 | ||
4312 | bval = DC395x_read8(acb, TRM_S1040_GEN_STATUS); | |
4313 | dprintkl(KERN_INFO, "%sConnectors: ", | |
4314 | ((bval & WIDESCSI) ? "(Wide) " : "")); | |
4315 | if (!(bval & CON5068)) | |
4316 | printk("ext%s ", !(bval & EXT68HIGH) ? "68" : "50"); | |
4317 | if (!(bval & CON68)) | |
4318 | printk("int68%s ", !(bval & INT68HIGH) ? "" : "(50)"); | |
4319 | if (!(bval & CON50)) | |
4320 | printk("int50 "); | |
4321 | if ((bval & (CON5068 | CON50 | CON68)) == | |
4322 | 0 /*(CON5068 | CON50 | CON68) */ ) | |
4323 | printk(" Oops! (All 3?) "); | |
4324 | bval = DC395x_read8(acb, TRM_S1040_GEN_CONTROL); | |
4325 | printk(" Termination: "); | |
4326 | if (bval & DIS_TERM) | |
4327 | printk("Disabled\n"); | |
4328 | else { | |
4329 | if (bval & AUTOTERM) | |
4330 | printk("Auto "); | |
4331 | if (bval & LOW8TERM) | |
4332 | printk("Low "); | |
4333 | if (bval & UP8TERM) | |
4334 | printk("High "); | |
4335 | printk("\n"); | |
4336 | } | |
4337 | } | |
4338 | ||
4339 | ||
4340 | /** | |
4341 | * adapter_init_params - Initialize the various parameters in the | |
4342 | * adapter structure. Note that the pointer to the scsi_host is set | |
4343 | * early (when this instance is created) and the io_port and irq | |
4344 | * values are set later after they have been reserved. This just gets | |
4345 | * everything set to a good starting position. | |
4346 | * | |
4347 | * The eeprom structure in the adapter needs to have been set before | |
4348 | * calling this function. | |
4349 | * | |
4350 | * @acb: The adapter to initialize. | |
4351 | **/ | |
4352 | static void __devinit adapter_init_params(struct AdapterCtlBlk *acb) | |
4353 | { | |
4354 | struct NvRamType *eeprom = &acb->eeprom; | |
4355 | int i; | |
4356 | ||
4357 | /* NOTE: acb->scsi_host is set at scsi_host/acb creation time */ | |
4358 | /* NOTE: acb->io_port_base is set at port registration time */ | |
4359 | /* NOTE: acb->io_port_len is set at port registration time */ | |
4360 | ||
4361 | INIT_LIST_HEAD(&acb->dcb_list); | |
4362 | acb->dcb_run_robin = NULL; | |
4363 | acb->active_dcb = NULL; | |
4364 | ||
4365 | INIT_LIST_HEAD(&acb->srb_free_list); | |
4366 | /* temp SRB for Q tag used or abort command used */ | |
4367 | acb->tmp_srb = &acb->srb; | |
4368 | init_timer(&acb->waiting_timer); | |
4369 | init_timer(&acb->selto_timer); | |
4370 | ||
4371 | acb->srb_count = DC395x_MAX_SRB_CNT; | |
4372 | ||
4373 | acb->sel_timeout = DC395x_SEL_TIMEOUT; /* timeout=250ms */ | |
4374 | /* NOTE: acb->irq_level is set at IRQ registration time */ | |
4375 | ||
4376 | acb->tag_max_num = 1 << eeprom->max_tag; | |
4377 | if (acb->tag_max_num > 30) | |
4378 | acb->tag_max_num = 30; | |
4379 | ||
4380 | acb->acb_flag = 0; /* RESET_DETECT, RESET_DONE, RESET_DEV */ | |
4381 | acb->gmode2 = eeprom->channel_cfg; | |
4382 | acb->config = 0; /* NOTE: actually set in adapter_init_chip */ | |
4383 | ||
4384 | if (eeprom->channel_cfg & NAC_SCANLUN) | |
4385 | acb->lun_chk = 1; | |
4386 | acb->scan_devices = 1; | |
4387 | ||
4388 | acb->scsi_host->this_id = eeprom->scsi_id; | |
4389 | acb->hostid_bit = (1 << acb->scsi_host->this_id); | |
4390 | ||
4391 | for (i = 0; i < DC395x_MAX_SCSI_ID; i++) | |
4392 | acb->dcb_map[i] = 0; | |
4393 | ||
4394 | acb->msg_len = 0; | |
4395 | ||
4396 | /* link static array of srbs into the srb free list */ | |
4397 | for (i = 0; i < acb->srb_count - 1; i++) | |
4398 | srb_free_insert(acb, &acb->srb_array[i]); | |
4399 | } | |
4400 | ||
4401 | ||
4402 | /** | |
4403 | * adapter_init_host - Initialize the scsi host instance based on | |
4404 | * values that we have already stored in the adapter instance. There's | |
4405 | * some mention that a lot of these are deprecated, so we won't use | |
4406 | * them (we'll use the ones in the adapter instance) but we'll fill | |
4407 | * them in in case something else needs them. | |
4408 | * | |
4409 | * The eeprom structure, irq and io ports in the adapter need to have | |
4410 | * been set before calling this function. | |
4411 | * | |
4412 | * @host: The scsi host instance to fill in the values for. | |
4413 | **/ | |
4414 | static void __devinit adapter_init_scsi_host(struct Scsi_Host *host) | |
4415 | { | |
4416 | struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata; | |
4417 | struct NvRamType *eeprom = &acb->eeprom; | |
4418 | ||
4419 | host->max_cmd_len = 24; | |
4420 | host->can_queue = DC395x_MAX_CMD_QUEUE; | |
4421 | host->cmd_per_lun = DC395x_MAX_CMD_PER_LUN; | |
4422 | host->this_id = (int)eeprom->scsi_id; | |
4423 | host->io_port = acb->io_port_base; | |
4424 | host->n_io_port = acb->io_port_len; | |
4425 | host->dma_channel = -1; | |
4426 | host->unique_id = acb->io_port_base; | |
4427 | host->irq = acb->irq_level; | |
4428 | host->last_reset = jiffies; | |
4429 | ||
4430 | host->max_id = 16; | |
4431 | if (host->max_id - 1 == eeprom->scsi_id) | |
4432 | host->max_id--; | |
4433 | ||
4434 | #ifdef CONFIG_SCSI_MULTI_LUN | |
4435 | if (eeprom->channel_cfg & NAC_SCANLUN) | |
4436 | host->max_lun = 8; | |
4437 | else | |
4438 | host->max_lun = 1; | |
4439 | #else | |
4440 | host->max_lun = 1; | |
4441 | #endif | |
4442 | ||
4443 | } | |
4444 | ||
4445 | ||
4446 | /** | |
4447 | * adapter_init_chip - Get the chip into a know state and figure out | |
4448 | * some of the settings that apply to this adapter. | |
4449 | * | |
4450 | * The io port in the adapter needs to have been set before calling | |
4451 | * this function. The config will be configured correctly on return. | |
4452 | * | |
4453 | * @acb: The adapter which we are to init. | |
4454 | **/ | |
4455 | static void __devinit adapter_init_chip(struct AdapterCtlBlk *acb) | |
4456 | { | |
4457 | struct NvRamType *eeprom = &acb->eeprom; | |
4458 | ||
4459 | /* Mask all the interrupt */ | |
4460 | DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00); | |
4461 | DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00); | |
4462 | ||
4463 | /* Reset SCSI module */ | |
4464 | DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE); | |
4465 | ||
4466 | /* Reset PCI/DMA module */ | |
4467 | DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE); | |
4468 | udelay(20); | |
4469 | ||
4470 | /* program configuration 0 */ | |
4471 | acb->config = HCC_AUTOTERM | HCC_PARITY; | |
4472 | if (DC395x_read8(acb, TRM_S1040_GEN_STATUS) & WIDESCSI) | |
4473 | acb->config |= HCC_WIDE_CARD; | |
4474 | ||
4475 | if (eeprom->channel_cfg & NAC_POWERON_SCSI_RESET) | |
4476 | acb->config |= HCC_SCSI_RESET; | |
4477 | ||
4478 | if (acb->config & HCC_SCSI_RESET) { | |
4479 | dprintkl(KERN_INFO, "Performing initial SCSI bus reset\n"); | |
4480 | DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI); | |
4481 | ||
4482 | /*while (!( DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET )); */ | |
4483 | /*spin_unlock_irq (&io_request_lock); */ | |
4484 | udelay(500); | |
4485 | ||
4486 | acb->scsi_host->last_reset = | |
4487 | jiffies + HZ / 2 + | |
4488 | HZ * acb->eeprom.delay_time; | |
4489 | ||
4490 | /*spin_lock_irq (&io_request_lock); */ | |
4491 | } | |
4492 | } | |
4493 | ||
4494 | ||
4495 | /** | |
4496 | * init_adapter - Grab the resource for the card, setup the adapter | |
4497 | * information, set the card into a known state, create the various | |
4498 | * tables etc etc. This basically gets all adapter information all up | |
4499 | * to date, intialised and gets the chip in sync with it. | |
4500 | * | |
4501 | * @host: This hosts adapter structure | |
4502 | * @io_port: The base I/O port | |
4503 | * @irq: IRQ | |
4504 | * | |
4505 | * Returns 0 if the initialization succeeds, any other value on | |
4506 | * failure. | |
4507 | **/ | |
4508 | static int __devinit adapter_init(struct AdapterCtlBlk *acb, | |
4509 | unsigned long io_port, u32 io_port_len, unsigned int irq) | |
4510 | { | |
4511 | if (!request_region(io_port, io_port_len, DC395X_NAME)) { | |
4512 | dprintkl(KERN_ERR, "Failed to reserve IO region 0x%lx\n", io_port); | |
4513 | goto failed; | |
4514 | } | |
4515 | /* store port base to indicate we have registered it */ | |
4516 | acb->io_port_base = io_port; | |
4517 | acb->io_port_len = io_port_len; | |
4518 | ||
1d6f359a | 4519 | if (request_irq(irq, dc395x_interrupt, IRQF_SHARED, DC395X_NAME, acb)) { |
1da177e4 LT |
4520 | /* release the region we just claimed */ |
4521 | dprintkl(KERN_INFO, "Failed to register IRQ\n"); | |
4522 | goto failed; | |
4523 | } | |
4524 | /* store irq to indicate we have registered it */ | |
4525 | acb->irq_level = irq; | |
4526 | ||
4527 | /* get eeprom configuration information and command line settings etc */ | |
4528 | check_eeprom(&acb->eeprom, io_port); | |
4529 | print_eeprom_settings(&acb->eeprom); | |
4530 | ||
4531 | /* setup adapter control block */ | |
4532 | adapter_init_params(acb); | |
4533 | ||
4534 | /* display card connectors/termination settings */ | |
4535 | adapter_print_config(acb); | |
4536 | ||
4537 | if (adapter_sg_tables_alloc(acb)) { | |
4538 | dprintkl(KERN_DEBUG, "Memory allocation for SG tables failed\n"); | |
4539 | goto failed; | |
4540 | } | |
4541 | adapter_init_scsi_host(acb->scsi_host); | |
4542 | adapter_init_chip(acb); | |
4543 | set_basic_config(acb); | |
4544 | ||
4545 | dprintkdbg(DBG_0, | |
4546 | "adapter_init: acb=%p, pdcb_map=%p psrb_array=%p " | |
4547 | "size{acb=0x%04x dcb=0x%04x srb=0x%04x}\n", | |
4548 | acb, acb->dcb_map, acb->srb_array, sizeof(struct AdapterCtlBlk), | |
4549 | sizeof(struct DeviceCtlBlk), sizeof(struct ScsiReqBlk)); | |
4550 | return 0; | |
4551 | ||
4552 | failed: | |
4553 | if (acb->irq_level) | |
4554 | free_irq(acb->irq_level, acb); | |
4555 | if (acb->io_port_base) | |
4556 | release_region(acb->io_port_base, acb->io_port_len); | |
4557 | adapter_sg_tables_free(acb); | |
4558 | ||
4559 | return 1; | |
4560 | } | |
4561 | ||
4562 | ||
4563 | /** | |
4564 | * adapter_uninit_chip - cleanly shut down the scsi controller chip, | |
4565 | * stopping all operations and disabling interrupt generation on the | |
4566 | * card. | |
4567 | * | |
4568 | * @acb: The adapter which we are to shutdown. | |
4569 | **/ | |
4570 | static void adapter_uninit_chip(struct AdapterCtlBlk *acb) | |
4571 | { | |
4572 | /* disable interrupts */ | |
4573 | DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0); | |
4574 | DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0); | |
4575 | ||
4576 | /* reset the scsi bus */ | |
4577 | if (acb->config & HCC_SCSI_RESET) | |
4578 | reset_scsi_bus(acb); | |
4579 | ||
3a4fa0a2 | 4580 | /* clear any pending interrupt state */ |
1da177e4 LT |
4581 | DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS); |
4582 | } | |
4583 | ||
4584 | ||
4585 | ||
4586 | /** | |
4587 | * adapter_uninit - Shut down the chip and release any resources that | |
4588 | * we had allocated. Once this returns the adapter should not be used | |
4589 | * anymore. | |
4590 | * | |
4591 | * @acb: The adapter which we are to un-initialize. | |
4592 | **/ | |
4593 | static void adapter_uninit(struct AdapterCtlBlk *acb) | |
4594 | { | |
4595 | unsigned long flags; | |
4596 | DC395x_LOCK_IO(acb->scsi_host, flags); | |
4597 | ||
4598 | /* remove timers */ | |
4599 | if (timer_pending(&acb->waiting_timer)) | |
4600 | del_timer(&acb->waiting_timer); | |
4601 | if (timer_pending(&acb->selto_timer)) | |
4602 | del_timer(&acb->selto_timer); | |
4603 | ||
4604 | adapter_uninit_chip(acb); | |
4605 | adapter_remove_and_free_all_devices(acb); | |
4606 | DC395x_UNLOCK_IO(acb->scsi_host, flags); | |
4607 | ||
4608 | if (acb->irq_level) | |
4609 | free_irq(acb->irq_level, acb); | |
4610 | if (acb->io_port_base) | |
4611 | release_region(acb->io_port_base, acb->io_port_len); | |
4612 | ||
4613 | adapter_sg_tables_free(acb); | |
4614 | } | |
4615 | ||
4616 | ||
4617 | #undef SPRINTF | |
4618 | #define SPRINTF(args...) pos += sprintf(pos, args) | |
4619 | ||
4620 | #undef YESNO | |
4621 | #define YESNO(YN) \ | |
4622 | if (YN) SPRINTF(" Yes ");\ | |
4623 | else SPRINTF(" No ") | |
4624 | ||
4625 | static int dc395x_proc_info(struct Scsi_Host *host, char *buffer, | |
4626 | char **start, off_t offset, int length, int inout) | |
4627 | { | |
4628 | struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata; | |
4629 | int spd, spd1; | |
4630 | char *pos = buffer; | |
4631 | struct DeviceCtlBlk *dcb; | |
4632 | unsigned long flags; | |
4633 | int dev; | |
4634 | ||
4635 | if (inout) /* Has data been written to the file ? */ | |
4636 | return -EPERM; | |
4637 | ||
4638 | SPRINTF(DC395X_BANNER " PCI SCSI Host Adapter\n"); | |
4639 | SPRINTF(" Driver Version " DC395X_VERSION "\n"); | |
4640 | ||
4641 | DC395x_LOCK_IO(acb->scsi_host, flags); | |
4642 | ||
4643 | SPRINTF("SCSI Host Nr %i, ", host->host_no); | |
4644 | SPRINTF("DC395U/UW/F DC315/U %s\n", | |
4645 | (acb->config & HCC_WIDE_CARD) ? "Wide" : ""); | |
4646 | SPRINTF("io_port_base 0x%04lx, ", acb->io_port_base); | |
4647 | SPRINTF("irq_level 0x%04x, ", acb->irq_level); | |
4648 | SPRINTF(" SelTimeout %ims\n", (1638 * acb->sel_timeout) / 1000); | |
4649 | ||
4650 | SPRINTF("MaxID %i, MaxLUN %i, ", host->max_id, host->max_lun); | |
4651 | SPRINTF("AdapterID %i\n", host->this_id); | |
4652 | ||
4653 | SPRINTF("tag_max_num %i", acb->tag_max_num); | |
4654 | /*SPRINTF(", DMA_Status %i\n", DC395x_read8(acb, TRM_S1040_DMA_STATUS)); */ | |
4655 | SPRINTF(", FilterCfg 0x%02x", | |
4656 | DC395x_read8(acb, TRM_S1040_SCSI_CONFIG1)); | |
4657 | SPRINTF(", DelayReset %is\n", acb->eeprom.delay_time); | |
4658 | /*SPRINTF("\n"); */ | |
4659 | ||
4660 | SPRINTF("Nr of DCBs: %i\n", list_size(&acb->dcb_list)); | |
4661 | SPRINTF | |
4662 | ("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n", | |
4663 | acb->dcb_map[0], acb->dcb_map[1], acb->dcb_map[2], | |
4664 | acb->dcb_map[3], acb->dcb_map[4], acb->dcb_map[5], | |
4665 | acb->dcb_map[6], acb->dcb_map[7]); | |
4666 | SPRINTF | |
4667 | (" %02x %02x %02x %02x %02x %02x %02x %02x\n", | |
4668 | acb->dcb_map[8], acb->dcb_map[9], acb->dcb_map[10], | |
4669 | acb->dcb_map[11], acb->dcb_map[12], acb->dcb_map[13], | |
4670 | acb->dcb_map[14], acb->dcb_map[15]); | |
4671 | ||
4672 | SPRINTF | |
4673 | ("Un ID LUN Prty Sync Wide DsCn SndS TagQ nego_period SyncFreq SyncOffs MaxCmd\n"); | |
4674 | ||
4675 | dev = 0; | |
4676 | list_for_each_entry(dcb, &acb->dcb_list, list) { | |
4677 | int nego_period; | |
4678 | SPRINTF("%02i %02i %02i ", dev, dcb->target_id, | |
4679 | dcb->target_lun); | |
4680 | YESNO(dcb->dev_mode & NTC_DO_PARITY_CHK); | |
4681 | YESNO(dcb->sync_offset); | |
4682 | YESNO(dcb->sync_period & WIDE_SYNC); | |
4683 | YESNO(dcb->dev_mode & NTC_DO_DISCONNECT); | |
4684 | YESNO(dcb->dev_mode & NTC_DO_SEND_START); | |
4685 | YESNO(dcb->sync_mode & EN_TAG_QUEUEING); | |
4686 | nego_period = clock_period[dcb->sync_period & 0x07] << 2; | |
4687 | if (dcb->sync_offset) | |
4688 | SPRINTF(" %03i ns ", nego_period); | |
4689 | else | |
4690 | SPRINTF(" (%03i ns)", (dcb->min_nego_period << 2)); | |
4691 | ||
4692 | if (dcb->sync_offset & 0x0f) { | |
4693 | spd = 1000 / (nego_period); | |
4694 | spd1 = 1000 % (nego_period); | |
4695 | spd1 = (spd1 * 10 + nego_period / 2) / (nego_period); | |
4696 | SPRINTF(" %2i.%1i M %02i ", spd, spd1, | |
4697 | (dcb->sync_offset & 0x0f)); | |
4698 | } else | |
4699 | SPRINTF(" "); | |
4700 | ||
4701 | /* Add more info ... */ | |
4702 | SPRINTF(" %02i\n", dcb->max_command); | |
4703 | dev++; | |
4704 | } | |
4705 | ||
4706 | if (timer_pending(&acb->waiting_timer)) | |
4707 | SPRINTF("Waiting queue timer running\n"); | |
4708 | else | |
4709 | SPRINTF("\n"); | |
4710 | ||
4711 | list_for_each_entry(dcb, &acb->dcb_list, list) { | |
4712 | struct ScsiReqBlk *srb; | |
4713 | if (!list_empty(&dcb->srb_waiting_list)) | |
4714 | SPRINTF("DCB (%02i-%i): Waiting: %i:", | |
4715 | dcb->target_id, dcb->target_lun, | |
4716 | list_size(&dcb->srb_waiting_list)); | |
4717 | list_for_each_entry(srb, &dcb->srb_waiting_list, list) | |
12a44162 | 4718 | SPRINTF(" %li", srb->cmd->serial_number); |
1da177e4 LT |
4719 | if (!list_empty(&dcb->srb_going_list)) |
4720 | SPRINTF("\nDCB (%02i-%i): Going : %i:", | |
4721 | dcb->target_id, dcb->target_lun, | |
4722 | list_size(&dcb->srb_going_list)); | |
4723 | list_for_each_entry(srb, &dcb->srb_going_list, list) | |
12a44162 | 4724 | SPRINTF(" %li", srb->cmd->serial_number); |
1da177e4 LT |
4725 | if (!list_empty(&dcb->srb_waiting_list) || !list_empty(&dcb->srb_going_list)) |
4726 | SPRINTF("\n"); | |
4727 | } | |
4728 | ||
4729 | if (debug_enabled(DBG_1)) { | |
4730 | SPRINTF("DCB list for ACB %p:\n", acb); | |
4731 | list_for_each_entry(dcb, &acb->dcb_list, list) { | |
4732 | SPRINTF("%p -> ", dcb); | |
4733 | } | |
4734 | SPRINTF("END\n"); | |
4735 | } | |
4736 | ||
4737 | *start = buffer + offset; | |
4738 | DC395x_UNLOCK_IO(acb->scsi_host, flags); | |
4739 | ||
4740 | if (pos - buffer < offset) | |
4741 | return 0; | |
4742 | else if (pos - buffer - offset < length) | |
4743 | return pos - buffer - offset; | |
4744 | else | |
4745 | return length; | |
4746 | } | |
4747 | ||
4748 | ||
4749 | static struct scsi_host_template dc395x_driver_template = { | |
4750 | .module = THIS_MODULE, | |
4751 | .proc_name = DC395X_NAME, | |
4752 | .proc_info = dc395x_proc_info, | |
4753 | .name = DC395X_BANNER " " DC395X_VERSION, | |
4754 | .queuecommand = dc395x_queue_command, | |
4755 | .bios_param = dc395x_bios_param, | |
4756 | .slave_alloc = dc395x_slave_alloc, | |
4757 | .slave_destroy = dc395x_slave_destroy, | |
4758 | .can_queue = DC395x_MAX_CAN_QUEUE, | |
4759 | .this_id = 7, | |
4760 | .sg_tablesize = DC395x_MAX_SG_TABLESIZE, | |
4761 | .cmd_per_lun = DC395x_MAX_CMD_PER_LUN, | |
4762 | .eh_abort_handler = dc395x_eh_abort, | |
4763 | .eh_bus_reset_handler = dc395x_eh_bus_reset, | |
4764 | .unchecked_isa_dma = 0, | |
4765 | .use_clustering = DISABLE_CLUSTERING, | |
4766 | }; | |
4767 | ||
4768 | ||
4769 | /** | |
4770 | * banner_display - Display banner on first instance of driver | |
4771 | * initialized. | |
4772 | **/ | |
4773 | static void banner_display(void) | |
4774 | { | |
4775 | static int banner_done = 0; | |
4776 | if (!banner_done) | |
4777 | { | |
4778 | dprintkl(KERN_INFO, "%s %s\n", DC395X_BANNER, DC395X_VERSION); | |
4779 | banner_done = 1; | |
4780 | } | |
4781 | } | |
4782 | ||
4783 | ||
4784 | /** | |
4785 | * dc395x_init_one - Initialise a single instance of the adapter. | |
4786 | * | |
4787 | * The PCI layer will call this once for each instance of the adapter | |
4788 | * that it finds in the system. The pci_dev strcuture indicates which | |
4789 | * instance we are being called from. | |
4790 | * | |
4791 | * @dev: The PCI device to intialize. | |
4792 | * @id: Looks like a pointer to the entry in our pci device table | |
4793 | * that was actually matched by the PCI subsystem. | |
4794 | * | |
4795 | * Returns 0 on success, or an error code (-ve) on failure. | |
4796 | **/ | |
4797 | static int __devinit dc395x_init_one(struct pci_dev *dev, | |
4798 | const struct pci_device_id *id) | |
4799 | { | |
4800 | struct Scsi_Host *scsi_host = NULL; | |
4801 | struct AdapterCtlBlk *acb = NULL; | |
4802 | unsigned long io_port_base; | |
4803 | unsigned int io_port_len; | |
4804 | unsigned int irq; | |
4805 | ||
4806 | dprintkdbg(DBG_0, "Init one instance (%s)\n", pci_name(dev)); | |
4807 | banner_display(); | |
4808 | ||
4809 | if (pci_enable_device(dev)) | |
4810 | { | |
4811 | dprintkl(KERN_INFO, "PCI Enable device failed.\n"); | |
4812 | return -ENODEV; | |
4813 | } | |
4814 | io_port_base = pci_resource_start(dev, 0) & PCI_BASE_ADDRESS_IO_MASK; | |
4815 | io_port_len = pci_resource_len(dev, 0); | |
4816 | irq = dev->irq; | |
4817 | dprintkdbg(DBG_0, "IO_PORT=0x%04lx, IRQ=0x%x\n", io_port_base, dev->irq); | |
4818 | ||
4819 | /* allocate scsi host information (includes out adapter) */ | |
4820 | scsi_host = scsi_host_alloc(&dc395x_driver_template, | |
4821 | sizeof(struct AdapterCtlBlk)); | |
4822 | if (!scsi_host) { | |
4823 | dprintkl(KERN_INFO, "scsi_host_alloc failed\n"); | |
4824 | goto fail; | |
4825 | } | |
4826 | acb = (struct AdapterCtlBlk*)scsi_host->hostdata; | |
4827 | acb->scsi_host = scsi_host; | |
4828 | acb->dev = dev; | |
4829 | ||
4830 | /* initialise the adapter and everything we need */ | |
4831 | if (adapter_init(acb, io_port_base, io_port_len, irq)) { | |
4832 | dprintkl(KERN_INFO, "adapter init failed\n"); | |
4833 | goto fail; | |
4834 | } | |
4835 | ||
4836 | pci_set_master(dev); | |
4837 | ||
4838 | /* get the scsi mid level to scan for new devices on the bus */ | |
4839 | if (scsi_add_host(scsi_host, &dev->dev)) { | |
4840 | dprintkl(KERN_ERR, "scsi_add_host failed\n"); | |
4841 | goto fail; | |
4842 | } | |
4843 | pci_set_drvdata(dev, scsi_host); | |
4844 | scsi_scan_host(scsi_host); | |
4845 | ||
4846 | return 0; | |
4847 | ||
4848 | fail: | |
4849 | if (acb != NULL) | |
4850 | adapter_uninit(acb); | |
4851 | if (scsi_host != NULL) | |
4852 | scsi_host_put(scsi_host); | |
4853 | pci_disable_device(dev); | |
4854 | return -ENODEV; | |
4855 | } | |
4856 | ||
4857 | ||
4858 | /** | |
4859 | * dc395x_remove_one - Called to remove a single instance of the | |
4860 | * adapter. | |
4861 | * | |
4862 | * @dev: The PCI device to intialize. | |
4863 | **/ | |
4864 | static void __devexit dc395x_remove_one(struct pci_dev *dev) | |
4865 | { | |
4866 | struct Scsi_Host *scsi_host = pci_get_drvdata(dev); | |
4867 | struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)(scsi_host->hostdata); | |
4868 | ||
4869 | dprintkdbg(DBG_0, "dc395x_remove_one: acb=%p\n", acb); | |
4870 | ||
4871 | scsi_remove_host(scsi_host); | |
4872 | adapter_uninit(acb); | |
4873 | pci_disable_device(dev); | |
4874 | scsi_host_put(scsi_host); | |
4875 | pci_set_drvdata(dev, NULL); | |
4876 | } | |
4877 | ||
4878 | ||
4879 | static struct pci_device_id dc395x_pci_table[] = { | |
4880 | { | |
4881 | .vendor = PCI_VENDOR_ID_TEKRAM, | |
4882 | .device = PCI_DEVICE_ID_TEKRAM_TRMS1040, | |
4883 | .subvendor = PCI_ANY_ID, | |
4884 | .subdevice = PCI_ANY_ID, | |
4885 | }, | |
4886 | {} /* Terminating entry */ | |
4887 | }; | |
4888 | MODULE_DEVICE_TABLE(pci, dc395x_pci_table); | |
4889 | ||
4890 | ||
4891 | static struct pci_driver dc395x_driver = { | |
4892 | .name = DC395X_NAME, | |
4893 | .id_table = dc395x_pci_table, | |
4894 | .probe = dc395x_init_one, | |
4895 | .remove = __devexit_p(dc395x_remove_one), | |
4896 | }; | |
4897 | ||
4898 | ||
4899 | /** | |
4900 | * dc395x_module_init - Module initialization function | |
4901 | * | |
4902 | * Used by both module and built-in driver to initialise this driver. | |
4903 | **/ | |
4904 | static int __init dc395x_module_init(void) | |
4905 | { | |
dcbccbde | 4906 | return pci_register_driver(&dc395x_driver); |
1da177e4 LT |
4907 | } |
4908 | ||
4909 | ||
4910 | /** | |
4911 | * dc395x_module_exit - Module cleanup function. | |
4912 | **/ | |
4913 | static void __exit dc395x_module_exit(void) | |
4914 | { | |
4915 | pci_unregister_driver(&dc395x_driver); | |
4916 | } | |
4917 | ||
4918 | ||
4919 | module_init(dc395x_module_init); | |
4920 | module_exit(dc395x_module_exit); | |
4921 | ||
4922 | MODULE_AUTHOR("C.L. Huang / Erich Chen / Kurt Garloff"); | |
4923 | MODULE_DESCRIPTION("SCSI host adapter driver for Tekram TRM-S1040 based adapters: Tekram DC395 and DC315 series"); | |
4924 | MODULE_LICENSE("GPL"); |