![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to u14-34f.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GnuMach] / Gnu-Mach / i386 / i386at / gpl / linux / scsi|
Return to u14-34f.c CVS log | Up to [GnuMach] / Gnu-Mach / i386 / i386at / gpl / linux / scsi |
1.1 root 1: /*
2: * u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters.
3: *
4: * 13 Jun 1995 rev. 2.01 for linux 1.2.10
5: * HAVE_OLD_UX4F_FIRMWARE should be defined for U34F boards when
6: * the firmware prom is not the lastest one (28008-006).
7: *
8: * 11 Mar 1995 rev. 2.00 for linux 1.2.0
9: * Fixed a bug which prevented media change detection for removable
10: * disk drives.
11: *
12: * 23 Feb 1995 rev. 1.18 for linux 1.1.94
13: * Added a check for scsi_register returning NULL.
14: *
15: * 11 Feb 1995 rev. 1.17 for linux 1.1.91
16: * U14F qualified to run with 32 sglists.
17: * Now DEBUG_RESET is disabled by default.
18: *
19: * 9 Feb 1995 rev. 1.16 for linux 1.1.90
20: * Use host->wish_block instead of host->block.
21: *
22: * 8 Feb 1995 rev. 1.15 for linux 1.1.89
23: * Cleared target_time_out counter while performing a reset.
24: *
25: * 28 Jan 1995 rev. 1.14 for linux 1.1.86
26: * Added module support.
27: * Log and do a retry when a disk drive returns a target status
28: * different from zero on a recovered error.
29: * Auto detects if U14F boards have an old firmware revision.
30: * Max number of scatter/gather lists set to 16 for all boards
31: * (most installation run fine using 33 sglists, while other
32: * has problems when using more then 16).
33: *
34: * 16 Jan 1995 rev. 1.13 for linux 1.1.81
35: * Display a message if check_region detects a port address
36: * already in use.
37: *
38: * 15 Dec 1994 rev. 1.12 for linux 1.1.74
39: * The host->block flag is set for all the detected ISA boards.
40: *
41: * 30 Nov 1994 rev. 1.11 for linux 1.1.68
42: * Redo i/o on target status CHECK_CONDITION for TYPE_DISK only.
43: * Added optional support for using a single board at a time.
44: *
45: * 14 Nov 1994 rev. 1.10 for linux 1.1.63
46: *
47: * 28 Oct 1994 rev. 1.09 for linux 1.1.58 Final BETA release.
48: * 16 Jul 1994 rev. 1.00 for linux 1.1.29 Initial ALPHA release.
49: *
50: * This driver is a total replacement of the original UltraStor
51: * scsi driver, but it supports ONLY the 14F and 34F boards.
52: * It can be configured in the same kernel in which the original
53: * ultrastor driver is configured to allow the original U24F
54: * support.
55: *
56: * Multiple U14F and/or U34F host adapters are supported.
57: *
58: * Copyright (C) 1994, 1995 Dario Ballabio ([email protected])
59: *
60: * WARNING: if your 14/34F board has an old firmware revision (see below)
61: * you must change "#undef" into "#define" in the following
62: * statement.
63: */
64: #undef HAVE_OLD_UX4F_FIRMWARE
65: /*
66: * The UltraStor 14F, 24F, and 34F are a family of intelligent, high
67: * performance SCSI-2 host adapters.
68: * Here is the scoop on the various models:
69: *
70: * 14F - ISA first-party DMA HA with floppy support and WD1003 emulation.
71: * 24F - EISA Bus Master HA with floppy support and WD1003 emulation.
72: * 34F - VESA Local-Bus Bus Master HA (no WD1003 emulation).
73: *
74: * This code has been tested with up to two U14F boards, using both
75: * firmware 28004-005/38004-004 (BIOS rev. 2.00) and the latest firmware
76: * 28004-006/38004-005 (BIOS rev. 2.01).
77: *
78: * The latest firmware is required in order to get reliable operations when
79: * clustering is enabled. ENABLE_CLUSTERING provides a performance increase
80: * up to 50% on sequential access.
81: *
82: * Since the Scsi_Host_Template structure is shared among all 14F and 34F,
83: * the last setting of use_clustering is in effect for all of these boards.
84: *
85: * Here a sample configuration using two U14F boards:
86: *
87: U14F0: PORT 0x330, BIOS 0xc8000, IRQ 11, DMA 5, SG 32, Mbox 16, CmdLun 2, C1.
88: U14F1: PORT 0x340, BIOS 0x00000, IRQ 10, DMA 6, SG 32, Mbox 16, CmdLun 2, C1.
89: *
90: * The boot controller must have its BIOS enabled, while other boards can
91: * have their BIOS disabled, or enabled to an higher address.
92: * Boards are named Ux4F0, Ux4F1..., according to the port address order in
93: * the io_port[] array.
94: *
95: * The following facts are based on real testing results (not on
96: * documentation) on the above U14F board.
97: *
98: * - The U14F board should be jumpered for bus on time less or equal to 7
99: * microseconds, while the default is 11 microseconds. This is order to
100: * get acceptable performance while using floppy drive and hard disk
101: * together. The jumpering for 7 microseconds is: JP13 pin 15-16,
102: * JP14 pin 7-8 and pin 9-10.
103: * The reduction has a little impact on scsi performance.
104: *
105: * - If scsi bus length exceeds 3m., the scsi bus speed needs to be reduced
106: * from 10Mhz to 5Mhz (do this by inserting a jumper on JP13 pin 7-8).
107: *
108: * - If U14F on board firmware is older than 28004-006/38004-005,
109: * the U14F board is unable to provide reliable operations if the scsi
110: * request length exceeds 16Kbyte. When this length is exceeded the
111: * behavior is:
112: * - adapter_status equal 0x96 or 0xa3 or 0x93 or 0x94;
113: * - adapter_status equal 0 and target_status equal 2 on for all targets
114: * in the next operation following the reset.
115: * This sequence takes a long time (>3 seconds), so in the meantime
116: * the SD_TIMEOUT in sd.c could expire giving rise to scsi aborts
117: * (SD_TIMEOUT has been increased from 3 to 6 seconds in 1.1.31).
118: * Because of this I had to DISABLE_CLUSTERING and to work around the
119: * bus reset in the interrupt service routine, returning DID_BUS_BUSY
120: * so that the operations are retried without complains from the scsi.c
121: * code.
122: * Any reset of the scsi bus is going to kill tape operations, since
123: * no retry is allowed for tapes. Bus resets are more likely when the
124: * scsi bus is under heavy load.
125: * Requests using scatter/gather have a maximum length of 16 x 1024 bytes
126: * when DISABLE_CLUSTERING is in effect, but unscattered requests could be
127: * larger than 16Kbyte.
128: *
129: * The new firmware has fixed all the above problems.
130: *
131: * For U34F boards the latest bios prom is 38008-002 (BIOS rev. 2.01),
132: * the latest firmware prom is 28008-006. Older firmware 28008-005 has
133: * problems when using more then 16 scatter/gather lists.
134: *
135: * In order to support multiple ISA boards in a reliable way,
136: * the driver sets host->wish_block = TRUE for all ISA boards.
137: */
138:
139: #if defined(MODULE)
140: #include <linux/module.h>
141: #include <linux/version.h>
142: #endif
143:
144: #include <linux/string.h>
145: #include <linux/sched.h>
146: #include <linux/kernel.h>
147: #include <linux/ioport.h>
148: #include <asm/io.h>
149: #include <asm/system.h>
150: #include <linux/proc_fs.h>
151: #include <linux/blk.h>
152: #include "scsi.h"
153: #include "hosts.h"
154: #include "sd.h"
155: #include <asm/dma.h>
156: #include <asm/irq.h>
157: #include "u14-34f.h"
158: #include<linux/stat.h>
159:
160: struct proc_dir_entry proc_scsi_u14_34f = {
161: PROC_SCSI_U14_34F, 6, "u14_34f",
162: S_IFDIR | S_IRUGO | S_IXUGO, 2
163: };
164:
165: /* Values for the PRODUCT_ID ports for the 14/34F */
166: #define PRODUCT_ID1 0x56
167: #define PRODUCT_ID2 0x40 /* NOTE: Only upper nibble is used */
168:
169: /* Subversion values */
170: #define ISA 0
171: #define ESA 1
172:
173: #define OP_HOST_ADAPTER 0x1
174: #define OP_SCSI 0x2
175: #define OP_RESET 0x4
176: #define DTD_SCSI 0x0
177: #define DTD_IN 0x1
178: #define DTD_OUT 0x2
179: #define DTD_NONE 0x3
180: #define HA_CMD_INQUIRY 0x1
181: #define HA_CMD_SELF_DIAG 0x2
182: #define HA_CMD_READ_BUFF 0x3
183: #define HA_CMD_WRITE_BUFF 0x4
184:
185: #undef DEBUG_DETECT
186: #undef DEBUG_INTERRUPT
187: #undef DEBUG_STATISTICS
188: #undef DEBUG_RESET
189:
190: #define MAX_TARGET 8
191: #define MAX_IRQ 16
192: #define MAX_BOARDS 4
193: #define MAX_MAILBOXES 16
194: #define MAX_SGLIST 32
195: #define MAX_SAFE_SGLIST 16
196: #define MAX_CMD_PER_LUN 2
197:
198: #define FALSE 0
199: #define TRUE 1
200: #define FREE 0
201: #define IN_USE 1
202: #define LOCKED 2
203: #define IN_RESET 3
204: #define IGNORE 4
205: #define NO_IRQ 0xff
206: #define NO_DMA 0xff
207: #define MAXLOOP 200000
208:
209: #define REG_LCL_MASK 0
210: #define REG_LCL_INTR 1
211: #define REG_SYS_MASK 2
212: #define REG_SYS_INTR 3
213: #define REG_PRODUCT_ID1 4
214: #define REG_PRODUCT_ID2 5
215: #define REG_CONFIG1 6
216: #define REG_CONFIG2 7
217: #define REG_OGM 8
218: #define REG_ICM 12
219: #define REGION_SIZE 13
220: #define BSY_ASSERTED 0x01
221: #define IRQ_ASSERTED 0x01
222: #define CMD_RESET 0xc0
223: #define CMD_OGM_INTR 0x01
224: #define CMD_CLR_INTR 0x01
225: #define CMD_ENA_INTR 0x81
226: #define ASOK 0x00
227: #define ASST 0x91
228:
229: #define PACKED __attribute__((packed))
230:
231: /* MailBox SCSI Command Packet */
232: struct mscp {
233: unsigned char opcode: 3; /* type of command */
234: unsigned char xdir: 2; /* data transfer direction */
235: unsigned char dcn: 1; /* disable disconnect */
236: unsigned char ca: 1; /* use cache (if available) */
237: unsigned char sg: 1; /* scatter/gather operation */
238: unsigned char target: 3; /* target SCSI id */
239: unsigned char ch_no: 2; /* SCSI channel (always 0 for 14f) */
240: unsigned char lun: 3; /* logical unit number */
241: unsigned int data_address PACKED; /* transfer data pointer */
242: unsigned int data_len PACKED; /* length in bytes */
243: unsigned int command_link PACKED; /* for linking command chains */
244: unsigned char scsi_command_link_id; /* identifies command in chain */
245: unsigned char use_sg; /* (if sg is set) 8 bytes per list */
246: unsigned char sense_len;
247: unsigned char scsi_cdbs_len; /* 6, 10, or 12 */
248: unsigned char scsi_cdbs[12]; /* SCSI commands */
249: unsigned char adapter_status; /* non-zero indicates HA error */
250: unsigned char target_status; /* non-zero indicates target error */
251: unsigned int sense_addr PACKED;
252:
253: Scsi_Cmnd *SCpnt;
254:
255: struct sg_list {
256: unsigned int address; /* Segment Address */
257: unsigned int num_bytes; /* Segment Length */
258: } sglist[MAX_SGLIST];
259:
260: unsigned int index; /* cp index */
261: };
262:
263: struct hostdata {
264: struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */
265: unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */
266: unsigned int last_cp_used; /* Index of last mailbox used */
267: unsigned int iocount; /* Total i/o done for this board */
268: unsigned int multicount; /* Total ... in second ihdlr loop */
269: int board_number; /* Number of this board */
270: char board_name[16]; /* Name of this board */
271: char board_id[256]; /* data from INQUIRY on this board */
272: int in_reset; /* True if board is doing a reset */
273: int target_time_out[MAX_TARGET]; /* N. of timeout errors on target */
274: int target_reset[MAX_TARGET]; /* If TRUE redo operation on target */
275: unsigned char subversion; /* Bus type, either ISA or ESA */
276: unsigned char heads;
277: unsigned char sectors;
278:
279: /* slot != 0 for the U24F, slot == 0 for both the U14F and U34F */
280: unsigned char slot;
281: };
282:
283: static struct Scsi_Host * sh[MAX_BOARDS + 1];
284: static const char* driver_name = "Ux4F";
285: static unsigned int irqlist[MAX_IRQ], calls[MAX_IRQ];
286:
287: #define HD(board) ((struct hostdata *) &sh[board]->hostdata)
288: #define BN(board) (HD(board)->board_name)
289:
290: static void u14_34f_interrupt_handler(int, struct pt_regs *);
291: static int do_trace = FALSE;
292:
293: static inline unchar wait_on_busy(ushort iobase) {
294: unsigned int loop = MAXLOOP;
295:
296: while (inb(iobase + REG_LCL_INTR) & BSY_ASSERTED)
297: if (--loop == 0) return TRUE;
298:
299: return FALSE;
300: }
301:
302: static int board_inquiry(unsigned int j) {
303: struct mscp *cpp;
304: unsigned int time, limit = 0;
305:
306: cpp = &HD(j)->cp[0];
307: memset(cpp, 0, sizeof(struct mscp));
308: cpp->opcode = OP_HOST_ADAPTER;
309: cpp->xdir = DTD_IN;
310: cpp->data_address = (unsigned int) HD(j)->board_id;
311: cpp->data_len = sizeof(HD(j)->board_id);
312: cpp->scsi_cdbs_len = 6;
313: cpp->scsi_cdbs[0] = HA_CMD_INQUIRY;
314:
315: if (wait_on_busy(sh[j]->io_port)) {
316: printk("%s: board_inquiry, adapter busy.\n", BN(j));
317: return TRUE;
318: }
319:
320: HD(j)->cp_stat[0] = IGNORE;
321:
322: /* Clear the interrupt indication */
323: outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
324:
325: /* Store pointer in OGM address bytes */
326: outl((unsigned int)cpp, sh[j]->io_port + REG_OGM);
327:
328: /* Issue OGM interrupt */
329: outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
330:
331: sti();
332: time = jiffies;
333: while (jiffies < (time + 100) && limit++ < 100000000);
334: cli();
335:
336: if (cpp->adapter_status || HD(j)->cp_stat[0] != FREE) {
337: HD(j)->cp_stat[0] = FREE;
338: printk("%s: board_inquiry, err 0x%x.\n", BN(j), cpp->adapter_status);
339: return TRUE;
340: }
341:
342: return FALSE;
343: }
344:
345: static inline int port_detect(ushort *port_base, unsigned int j,
346: Scsi_Host_Template * tpnt) {
347: unsigned char irq, dma_channel, subversion;
348: unsigned char in_byte;
349:
350: /* Allowed BIOS base addresses (NULL indicates reserved) */
351: void *bios_segment_table[8] = {
352: NULL,
353: (void *) 0xc4000, (void *) 0xc8000, (void *) 0xcc000, (void *) 0xd0000,
354: (void *) 0xd4000, (void *) 0xd8000, (void *) 0xdc000
355: };
356:
357: /* Allowed IRQs */
358: unsigned char interrupt_table[4] = { 15, 14, 11, 10 };
359:
360: /* Allowed DMA channels for ISA (0 indicates reserved) */
361: unsigned char dma_channel_table[4] = { 5, 6, 7, 0 };
362:
363: /* Head/sector mappings */
364: struct {
365: unsigned char heads;
366: unsigned char sectors;
367: } mapping_table[4] = {
368: { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 }
369: };
370:
371: struct config_1 {
372: unsigned char bios_segment: 3;
373: unsigned char removable_disks_as_fixed: 1;
374: unsigned char interrupt: 2;
375: unsigned char dma_channel: 2;
376: } config_1;
377:
378: struct config_2 {
379: unsigned char ha_scsi_id: 3;
380: unsigned char mapping_mode: 2;
381: unsigned char bios_drive_number: 1;
382: unsigned char tfr_port: 2;
383: } config_2;
384:
385: char name[16];
386:
387: sprintf(name, "%s%d", driver_name, j);
388:
389: if(check_region(*port_base, REGION_SIZE)) {
390: printk("%s: address 0x%03x in use, skipping probe.\n",
391: name, *port_base);
392: return FALSE;
393: }
394:
395: if (inb(*port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) return FALSE;
396:
397: in_byte = inb(*port_base + REG_PRODUCT_ID2);
398:
399: if ((in_byte & 0xf0) != PRODUCT_ID2) return FALSE;
400:
401: *(char *)&config_1 = inb(*port_base + REG_CONFIG1);
402: *(char *)&config_2 = inb(*port_base + REG_CONFIG2);
403:
404: irq = interrupt_table[config_1.interrupt];
405: dma_channel = dma_channel_table[config_1.dma_channel];
406: subversion = (in_byte & 0x0f);
407:
408: /* Board detected, allocate its IRQ if not already done */
409: if ((irq >= MAX_IRQ) || ((irqlist[irq] == NO_IRQ) && request_irq
410: (irq, u14_34f_interrupt_handler, SA_INTERRUPT, driver_name))) {
411: printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq);
412: return FALSE;
413: }
414:
415: if (subversion == ISA && request_dma(dma_channel, driver_name)) {
416: printk("%s: unable to allocate DMA channel %u, detaching.\n",
417: name, dma_channel);
418: free_irq(irq);
419: return FALSE;
420: }
421:
422: sh[j] = scsi_register(tpnt, sizeof(struct hostdata));
423:
424: if (sh[j] == NULL) {
425: printk("%s: unable to register host, detaching.\n", name);
426:
427: if (irqlist[irq] == NO_IRQ) free_irq(irq);
428:
429: if (subversion == ISA) free_dma(dma_channel);
430:
431: return FALSE;
432: }
433:
434: sh[j]->io_port = *port_base;
435: sh[j]->n_io_port = REGION_SIZE;
436: sh[j]->base = bios_segment_table[config_1.bios_segment];
437: sh[j]->irq = irq;
438: sh[j]->sg_tablesize = MAX_SGLIST;
439: sh[j]->this_id = config_2.ha_scsi_id;
440: sh[j]->can_queue = MAX_MAILBOXES;
441: sh[j]->cmd_per_lun = MAX_CMD_PER_LUN;
442:
443: #if defined(DEBUG_DETECT)
444: {
445: unsigned char sys_mask, lcl_mask;
446:
447: sys_mask = inb(sh[j]->io_port + REG_SYS_MASK);
448: lcl_mask = inb(sh[j]->io_port + REG_LCL_MASK);
449: printk("SYS_MASK 0x%x, LCL_MASK 0x%x.\n", sys_mask, lcl_mask);
450: }
451: #endif
452:
453: /* If BIOS is disabled, force enable interrupts */
454: if (sh[j]->base == 0) outb(CMD_ENA_INTR, sh[j]->io_port + REG_SYS_MASK);
455:
456: /* Register the I/O space that we use */
457: request_region(sh[j]->io_port, REGION_SIZE, driver_name);
458:
459: memset(HD(j), 0, sizeof(struct hostdata));
460: HD(j)->heads = mapping_table[config_2.mapping_mode].heads;
461: HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors;
462: HD(j)->subversion = subversion;
463: HD(j)->board_number = j;
464: irqlist[irq] = j;
465:
466: if (HD(j)->subversion == ESA) {
467:
468: #if defined (HAVE_OLD_UX4F_FIRMWARE)
469: sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
470: #endif
471:
472: sh[j]->dma_channel = NO_DMA;
473: sh[j]->unchecked_isa_dma = FALSE;
474: sprintf(BN(j), "U34F%d", j);
475: }
476: else {
477: sh[j]->wish_block = TRUE;
478:
479: #if defined (HAVE_OLD_UX4F_FIRMWARE)
480: sh[j]->hostt->use_clustering = DISABLE_CLUSTERING;
481: sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
482: #endif
483:
484: sh[j]->dma_channel = dma_channel;
485: sh[j]->unchecked_isa_dma = TRUE;
486: sprintf(BN(j), "U14F%d", j);
487: disable_dma(dma_channel);
488: clear_dma_ff(dma_channel);
489: set_dma_mode(dma_channel, DMA_MODE_CASCADE);
490: enable_dma(dma_channel);
491: }
492:
493: if (HD(j)->subversion == ISA && !board_inquiry(j)) {
494: HD(j)->board_id[40] = 0;
495:
496: if (strcmp(&HD(j)->board_id[32], "06000600")) {
497: printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]);
498: printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n",
499: BN(j), &HD(j)->board_id[32]);
500: sh[j]->hostt->use_clustering = DISABLE_CLUSTERING;
501: sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
502: }
503: }
504:
505: printk("%s: PORT 0x%03x, BIOS 0x%05x, IRQ %u, DMA %u, SG %d, "\
506: "Mbox %d, CmdLun %d, C%d.\n", BN(j), sh[j]->io_port,
507: (int)sh[j]->base, sh[j]->irq,
508: sh[j]->dma_channel, sh[j]->sg_tablesize,
509: sh[j]->can_queue, sh[j]->cmd_per_lun,
510: sh[j]->hostt->use_clustering);
511: return TRUE;
512: }
513:
514: int u14_34f_detect (Scsi_Host_Template * tpnt) {
515: unsigned int j = 0, k, flags;
516:
517: ushort io_port[] = {
518: 0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140, 0x0
519: };
520:
521: ushort *port_base = io_port;
522:
523: tpnt->proc_dir = &proc_scsi_u14_34f;
524:
525: save_flags(flags);
526: cli();
527:
528: for (k = 0; k < MAX_IRQ; k++) {
529: irqlist[k] = NO_IRQ;
530: calls[k] = 0;
531: }
532:
533: for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL;
534:
535: while (*port_base) {
536:
537: if (j < MAX_BOARDS && port_detect(port_base, j, tpnt)) j++;
538:
539: port_base++;
540: }
541:
542: if (j > 0)
543: printk("UltraStor 14F/34F: Copyright (C) 1994, 1995 Dario Ballabio.\n");
544:
545: restore_flags(flags);
546: return j;
547: }
548:
549: static inline void build_sg_list(struct mscp *cpp, Scsi_Cmnd *SCpnt) {
550: unsigned int k, data_len = 0;
551: struct scatterlist * sgpnt;
552:
553: sgpnt = (struct scatterlist *) SCpnt->request_buffer;
554:
555: for (k = 0; k < SCpnt->use_sg; k++) {
556: cpp->sglist[k].address = (unsigned int) sgpnt[k].address;
557: cpp->sglist[k].num_bytes = sgpnt[k].length;
558: data_len += sgpnt[k].length;
559: }
560:
561: cpp->use_sg = SCpnt->use_sg;
562: cpp->data_address = (unsigned int) cpp->sglist;
563: cpp->data_len = data_len;
564: }
565:
566: int u14_34f_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) {
567: unsigned int i, j, k, flags;
568: struct mscp *cpp;
569:
570: save_flags(flags);
571: cli();
572: /* j is the board number */
573: j = ((struct hostdata *) SCpnt->host->hostdata)->board_number;
574:
575: if (!done) panic("%s: qcomm, pid %ld, null done.\n", BN(j), SCpnt->pid);
576:
577: /* i is the mailbox number, look for the first free mailbox
578: starting from last_cp_used */
579: i = HD(j)->last_cp_used + 1;
580:
581: for (k = 0; k < sh[j]->can_queue; k++, i++) {
582:
583: if (i >= sh[j]->can_queue) i = 0;
584:
585: if (HD(j)->cp_stat[i] == FREE) {
586: HD(j)->last_cp_used = i;
587: break;
588: }
589: }
590:
591: if (k == sh[j]->can_queue) {
592: printk("%s: qcomm, no free mailbox, resetting.\n", BN(j));
593:
594: if (HD(j)->in_reset)
595: printk("%s: qcomm, already in reset.\n", BN(j));
596: else if (u14_34f_reset(SCpnt) == SCSI_RESET_SUCCESS)
597: panic("%s: qcomm, SCSI_RESET_SUCCESS.\n", BN(j));
598:
599: SCpnt->result = DID_BUS_BUSY << 16;
600: SCpnt->host_scribble = NULL;
601: printk("%s: qcomm, pid %ld, DID_BUS_BUSY, done.\n", BN(j), SCpnt->pid);
602: restore_flags(flags);
603: done(SCpnt);
604: return 0;
605: }
606:
607: /* Set pointer to control packet structure */
608: cpp = &HD(j)->cp[i];
609:
610: memset(cpp, 0, sizeof(struct mscp));
611: SCpnt->scsi_done = done;
612: cpp->index = i;
613: SCpnt->host_scribble = (unsigned char *) &cpp->index;
614:
615: if (do_trace) printk("%s: qcomm, mbox %d, target %d, pid %ld.\n",
616: BN(j), i, SCpnt->target, SCpnt->pid);
617:
618: cpp->opcode = OP_SCSI;
619: cpp->xdir = DTD_SCSI;
620: cpp->target = SCpnt->target;
621: cpp->lun = SCpnt->lun;
622: cpp->SCpnt = SCpnt;
623: cpp->sense_addr = (unsigned int) SCpnt->sense_buffer;
624: cpp->sense_len = sizeof SCpnt->sense_buffer;
625:
626: if (SCpnt->use_sg) {
627: cpp->sg = TRUE;
628: build_sg_list(cpp, SCpnt);
629: }
630: else {
631: cpp->data_address = (unsigned int)SCpnt->request_buffer;
632: cpp->data_len = SCpnt->request_bufflen;
633: }
634:
635: cpp->scsi_cdbs_len = SCpnt->cmd_len;
636: memcpy(cpp->scsi_cdbs, SCpnt->cmnd, cpp->scsi_cdbs_len);
637:
638: if (wait_on_busy(sh[j]->io_port)) {
639: SCpnt->result = DID_ERROR << 16;
640: SCpnt->host_scribble = NULL;
641: printk("%s: qcomm, target %d, pid %ld, adapter busy, DID_ERROR, done.\n",
642: BN(j), SCpnt->target, SCpnt->pid);
643: restore_flags(flags);
644: done(SCpnt);
645: return 0;
646: }
647:
648: /* Store pointer in OGM address bytes */
649: outl((unsigned int)cpp, sh[j]->io_port + REG_OGM);
650:
651: /* Issue OGM interrupt */
652: outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
653:
654: HD(j)->cp_stat[i] = IN_USE;
655: restore_flags(flags);
656: return 0;
657: }
658:
659: int u14_34f_abort(Scsi_Cmnd *SCarg) {
660: unsigned int i, j, flags;
661:
662: save_flags(flags);
663: cli();
664: j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
665:
666: if (SCarg->host_scribble == NULL) {
667: printk("%s: abort, target %d, pid %ld inactive.\n",
668: BN(j), SCarg->target, SCarg->pid);
669: restore_flags(flags);
670: return SCSI_ABORT_NOT_RUNNING;
671: }
672:
673: i = *(unsigned int *)SCarg->host_scribble;
674: printk("%s: abort, mbox %d, target %d, pid %ld.\n",
675: BN(j), i, SCarg->target, SCarg->pid);
676:
677: if (i >= sh[j]->can_queue)
678: panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j));
679:
680: if (wait_on_busy(sh[j]->io_port)) {
681: printk("%s: abort, timeout error.\n", BN(j));
682: restore_flags(flags);
683: return SCSI_ABORT_ERROR;
684: }
685:
686: if (HD(j)->cp_stat[i] == FREE) {
687: printk("%s: abort, mbox %d is free.\n", BN(j), i);
688: restore_flags(flags);
689: return SCSI_ABORT_NOT_RUNNING;
690: }
691:
692: if (HD(j)->cp_stat[i] == IN_USE) {
693: printk("%s: abort, mbox %d is in use.\n", BN(j), i);
694:
695: if (SCarg != HD(j)->cp[i].SCpnt)
696: panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
697: BN(j), i, SCarg, HD(j)->cp[i].SCpnt);
698:
699: restore_flags(flags);
700: return SCSI_ABORT_SNOOZE;
701: }
702:
703: if (HD(j)->cp_stat[i] == IN_RESET) {
704: printk("%s: abort, mbox %d is in reset.\n", BN(j), i);
705: restore_flags(flags);
706: return SCSI_ABORT_ERROR;
707: }
708:
709: if (HD(j)->cp_stat[i] == LOCKED) {
710: printk("%s: abort, mbox %d is locked.\n", BN(j), i);
711: restore_flags(flags);
712: return SCSI_ABORT_NOT_RUNNING;
713: }
714: restore_flags(flags);
715: panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i);
716: }
717:
718: int u14_34f_reset(Scsi_Cmnd * SCarg) {
719: unsigned int i, j, flags, time, k, limit = 0;
720: int arg_done = FALSE;
721: Scsi_Cmnd *SCpnt;
722:
723: save_flags(flags);
724: cli();
725: j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
726: printk("%s: reset, enter, target %d, pid %ld.\n",
727: BN(j), SCarg->target, SCarg->pid);
728:
729: if (SCarg->host_scribble == NULL)
730: printk("%s: reset, pid %ld inactive.\n", BN(j), SCarg->pid);
731:
732: if (HD(j)->in_reset) {
733: printk("%s: reset, exit, already in reset.\n", BN(j));
734: restore_flags(flags);
735: return SCSI_RESET_ERROR;
736: }
737:
738: if (wait_on_busy(sh[j]->io_port)) {
739: printk("%s: reset, exit, timeout error.\n", BN(j));
740: restore_flags(flags);
741: return SCSI_RESET_ERROR;
742: }
743:
744: for (k = 0; k < MAX_TARGET; k++) HD(j)->target_reset[k] = TRUE;
745:
746: for (k = 0; k < MAX_TARGET; k++) HD(j)->target_time_out[k] = 0;
747:
748: for (i = 0; i < sh[j]->can_queue; i++) {
749:
750: if (HD(j)->cp_stat[i] == FREE) continue;
751:
752: if (HD(j)->cp_stat[i] == LOCKED) {
753: HD(j)->cp_stat[i] = FREE;
754: printk("%s: reset, locked mbox %d forced free.\n", BN(j), i);
755: continue;
756: }
757:
758: SCpnt = HD(j)->cp[i].SCpnt;
759: HD(j)->cp_stat[i] = IN_RESET;
760: printk("%s: reset, mbox %d in reset, pid %ld.\n",
761: BN(j), i, SCpnt->pid);
762:
763: if (SCpnt == NULL)
764: panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i);
765:
766: if (SCpnt->host_scribble == NULL)
767: panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i);
768:
769: if (*(unsigned int *)SCpnt->host_scribble != i)
770: panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i);
771:
772: if (SCpnt->scsi_done == NULL)
773: panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i);
774:
775: if (SCpnt == SCarg) arg_done = TRUE;
776: }
777:
778: if (wait_on_busy(sh[j]->io_port)) {
779: printk("%s: reset, cannot reset, timeout error.\n", BN(j));
780: restore_flags(flags);
781: return SCSI_RESET_ERROR;
782: }
783:
784: outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR);
785: printk("%s: reset, board reset done, enabling interrupts.\n", BN(j));
786:
787: #if defined (DEBUG_RESET)
788: do_trace = TRUE;
789: #endif
790:
791: HD(j)->in_reset = TRUE;
792: sti();
793: time = jiffies;
794: while (jiffies < (time + 100) && limit++ < 100000000);
795: cli();
796: printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit);
797:
798: for (i = 0; i < sh[j]->can_queue; i++) {
799:
800: /* Skip mailboxes already set free by interrupt */
801: if (HD(j)->cp_stat[i] != IN_RESET) continue;
802:
803: SCpnt = HD(j)->cp[i].SCpnt;
804: SCpnt->result = DID_RESET << 16;
805: SCpnt->host_scribble = NULL;
806:
807: /* This mailbox is still waiting for its interrupt */
808: HD(j)->cp_stat[i] = LOCKED;
809:
810: printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n",
811: BN(j), i, SCpnt->pid);
812: restore_flags(flags);
813: SCpnt->scsi_done(SCpnt);
814: cli();
815: }
816:
817: HD(j)->in_reset = FALSE;
818: do_trace = FALSE;
819: restore_flags(flags);
820:
821: if (arg_done) {
822: printk("%s: reset, exit, success.\n", BN(j));
823: return SCSI_RESET_SUCCESS;
824: }
825: else {
826: printk("%s: reset, exit, wakeup.\n", BN(j));
827: return SCSI_RESET_PUNT;
828: }
829: }
830:
831: int u14_34f_biosparam(Disk * disk, kdev_t dev, int * dkinfo) {
832: unsigned int j = 0;
833: int size = disk->capacity;
834:
835: dkinfo[0] = HD(j)->heads;
836: dkinfo[1] = HD(j)->sectors;
837: dkinfo[2] = size / (HD(j)->heads * HD(j)->sectors);
838: return 0;
839: }
840:
841: static void u14_34f_interrupt_handler(int irq, struct pt_regs * regs) {
842: Scsi_Cmnd *SCpnt;
843: unsigned int i, j, k, flags, status, tstatus, loops, total_loops = 0;
844: struct mscp *spp;
845:
846: save_flags(flags);
847: cli();
848:
849: if (irqlist[irq] == NO_IRQ) {
850: printk("%s, ihdlr, irq %d, unexpected interrupt.\n", driver_name, irq);
851: restore_flags(flags);
852: return;
853: }
854:
855: if (do_trace) printk("%s: ihdlr, enter, irq %d, calls %d.\n",
856: driver_name, irq, calls[irq]);
857:
858: /* Service all the boards configured on this irq */
859: for (j = 0; sh[j] != NULL; j++) {
860:
861: if (sh[j]->irq != irq) continue;
862:
863: loops = 0;
864:
865: /* Loop until all interrupts for a board are serviced */
866: while (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED) {
867: total_loops++;
868: loops++;
869:
870: if (do_trace) printk("%s: ihdlr, start service, count %d.\n",
871: BN(j), HD(j)->iocount);
872:
873: spp = (struct mscp *)inl(sh[j]->io_port + REG_ICM);
874:
875: /* Clear interrupt pending flag */
876: outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
877:
878: i = spp - HD(j)->cp;
879:
880: if (i >= sh[j]->can_queue)
881: panic("%s: ihdlr, invalid mscp address.\n", BN(j));
882:
883: if (HD(j)->cp_stat[i] == IGNORE) {
884: HD(j)->cp_stat[i] = FREE;
885: continue;
886: }
887: else if (HD(j)->cp_stat[i] == LOCKED) {
888: HD(j)->cp_stat[i] = FREE;
889: printk("%s: ihdlr, mbox %d unlocked, count %d.\n",
890: BN(j), i, HD(j)->iocount);
891: continue;
892: }
893: else if (HD(j)->cp_stat[i] == FREE) {
894: printk("%s: ihdlr, mbox %d is free, count %d.\n",
895: BN(j), i, HD(j)->iocount);
896: continue;
897: }
898: else if (HD(j)->cp_stat[i] == IN_RESET)
899: printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i);
900: else if (HD(j)->cp_stat[i] != IN_USE)
901: panic("%s: ihdlr, mbox %d, invalid cp_stat.\n", BN(j), i);
902:
903: HD(j)->cp_stat[i] = FREE;
904: SCpnt = spp->SCpnt;
905:
906: if (SCpnt == NULL)
907: panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i);
908:
909: if (SCpnt->host_scribble == NULL)
910: panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n",
911: BN(j), i, SCpnt->pid, SCpnt);
912:
913: if (*(unsigned int *)SCpnt->host_scribble != i)
914: panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d,"\
915: " irq %d.\n", BN(j), i, SCpnt->pid,
916: *(unsigned int *)SCpnt->host_scribble, irq);
917:
918: tstatus = status_byte(spp->target_status);
919:
920: switch (spp->adapter_status) {
921: case ASOK: /* status OK */
922:
923: /* Forces a reset if a disk drive keeps returning BUSY */
924: if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
925: status = DID_ERROR << 16;
926:
927: /* If there was a bus reset, redo operation on each target */
928: else if (tstatus != GOOD
929: && SCpnt->device->type == TYPE_DISK
930: && HD(j)->target_reset[SCpnt->target])
931: status = DID_BUS_BUSY << 16;
932:
933: /* Works around a flaw in scsi.c */
934: else if (tstatus == CHECK_CONDITION
935: && SCpnt->device->type == TYPE_DISK
936: && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
937: status = DID_BUS_BUSY << 16;
938:
939: else
940: status = DID_OK << 16;
941:
942: if (tstatus == GOOD)
943: HD(j)->target_reset[SCpnt->target] = FALSE;
944:
945: if (spp->target_status && SCpnt->device->type == TYPE_DISK)
946: printk("%s: ihdlr, target %d:%d, pid %ld, target_status "\
947: "0x%x, sense key 0x%x.\n", BN(j),
948: SCpnt->target, SCpnt->lun, SCpnt->pid,
949: spp->target_status, SCpnt->sense_buffer[2]);
950:
951: HD(j)->target_time_out[SCpnt->target] = 0;
952:
953: break;
954: case ASST: /* Selection Time Out */
955:
956: if (HD(j)->target_time_out[SCpnt->target] > 1)
957: status = DID_ERROR << 16;
958: else {
959: status = DID_TIME_OUT << 16;
960: HD(j)->target_time_out[SCpnt->target]++;
961: }
962:
963: break;
964: case 0x92: /* Data over/under-run */
965: case 0x93: /* Unexpected bus free */
966: case 0x94: /* Target bus phase sequence failure */
967: case 0x96: /* Illegal SCSI command */
968: case 0xa3: /* SCSI bus reset error */
969:
970: if (SCpnt->device->type != TYPE_TAPE)
971: status = DID_BUS_BUSY << 16;
972: else
973: status = DID_ERROR << 16;
974:
975: for (k = 0; k < MAX_TARGET; k++)
976: HD(j)->target_reset[k] = TRUE;
977:
978: break;
979: case 0x01: /* Invalid command */
980: case 0x02: /* Invalid parameters */
981: case 0x03: /* Invalid data list */
982: case 0x84: /* SCSI bus abort error */
983: case 0x9b: /* Auto request sense error */
984: case 0x9f: /* Unexpected command complete message error */
985: case 0xff: /* Invalid parameter in the S/G list */
986: default:
987: status = DID_ERROR << 16;
988: break;
989: }
990:
991: SCpnt->result = status | spp->target_status;
992: HD(j)->iocount++;
993:
994: if (loops > 1) HD(j)->multicount++;
995:
996: #if defined (DEBUG_INTERRUPT)
997: if (SCpnt->result || do_trace)
998: #else
999: if ((spp->adapter_status != ASOK && HD(j)->iocount > 1000) ||
1000: (spp->adapter_status != ASOK &&
1001: spp->adapter_status != ASST && HD(j)->iocount <= 1000) ||
1002: do_trace)
1003: #endif
1004: printk("%s: ihdlr, mbox %d, err 0x%x:%x,"\
1005: " target %d:%d, pid %ld, count %d.\n",
1006: BN(j), i, spp->adapter_status, spp->target_status,
1007: SCpnt->target, SCpnt->lun, SCpnt->pid, HD(j)->iocount);
1008:
1009: /* Set the command state to inactive */
1010: SCpnt->host_scribble = NULL;
1011:
1012: restore_flags(flags);
1013: SCpnt->scsi_done(SCpnt);
1014: cli();
1015:
1016: } /* Multiple command loop */
1017:
1018: } /* Boards loop */
1019:
1020: calls[irq]++;
1021:
1022: if (total_loops == 0)
1023: printk("%s: ihdlr, irq %d, no command completed, calls %d.\n",
1024: driver_name, irq, calls[irq]);
1025:
1026: if (do_trace) printk("%s: ihdlr, exit, irq %d, calls %d.\n",
1027: driver_name, irq, calls[irq]);
1028:
1029: #if defined (DEBUG_STATISTICS)
1030: if ((calls[irq] % 100000) == 10000)
1031: for (j = 0; sh[j] != NULL; j++)
1032: printk("%s: ihdlr, calls %d, count %d, multi %d.\n", BN(j),
1033: calls[(sh[j]->irq)], HD(j)->iocount, HD(j)->multicount);
1034: #endif
1035:
1036: restore_flags(flags);
1037: return;
1038: }
1039:
1040: #if defined(MODULE)
1041: Scsi_Host_Template driver_template = ULTRASTOR_14_34F;
1042:
1043: #include "scsi_module.c"
1044: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.