[PATCH] pcmcia: default suspend and resume handling
[linux-2.6.git] / drivers / scsi / pcmcia / sym53c500_cs.c
1 /*
2 *  sym53c500_cs.c       Bob Tracy (rct@frus.com)
3 *
4 *  A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
5 *  New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
6 *  53c500 controller: intended for use with 2.6 and later kernels.
7 *  The pcmcia-cs add-on version of this driver is not supported
8 *  beyond 2.4.  It consisted of three files with history/copyright
9 *  information as follows:
10 *
11 *  SYM53C500.h
12 *       Bob Tracy (rct@frus.com)
13 *       Original by Tom Corner (tcorner@via.at).
14 *       Adapted from NCR53c406a.h which is Copyrighted (C) 1994
15 *       Normunds Saumanis (normunds@rx.tech.swh.lv)
16 *
17 *  SYM53C500.c
18 *       Bob Tracy (rct@frus.com)
19 *       Original driver by Tom Corner (tcorner@via.at) was adapted
20 *       from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 
21 *       Normunds Saumanis (normunds@fi.ibm.com)
22 *
23 *  sym53c500.c
24 *       Bob Tracy (rct@frus.com)
25 *       Original by Tom Corner (tcorner@via.at) was adapted from a
26 *       driver for the Qlogic SCSI card written by
27 *       David Hinds (dhinds@allegro.stanford.edu).
28
29 *  This program is free software; you can redistribute it and/or modify it
30 *  under the terms of the GNU General Public License as published by the
31 *  Free Software Foundation; either version 2, or (at your option) any
32 *  later version.
33 *
34 *  This program is distributed in the hope that it will be useful, but
35 *  WITHOUT ANY WARRANTY; without even the implied warranty of
36 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
37 *  General Public License for more details.
38 */
39
40 #define SYM53C500_DEBUG 0
41 #define VERBOSE_SYM53C500_DEBUG 0
42
43 /*
44 *  Set this to 0 if you encounter kernel lockups while transferring 
45 *  data in PIO mode.  Note this can be changed via "sysfs".
46 */
47 #define USE_FAST_PIO 1
48
49 /* =============== End of user configurable parameters ============== */
50
51 #include <linux/module.h>
52 #include <linux/moduleparam.h>
53 #include <linux/errno.h>
54 #include <linux/init.h>
55 #include <linux/interrupt.h>
56 #include <linux/kernel.h>
57 #include <linux/sched.h>
58 #include <linux/slab.h>
59 #include <linux/string.h>
60 #include <linux/ioport.h>
61 #include <linux/blkdev.h>
62 #include <linux/spinlock.h>
63 #include <linux/bitops.h>
64
65 #include <asm/io.h>
66 #include <asm/dma.h>
67 #include <asm/irq.h>
68
69 #include <scsi/scsi_ioctl.h>
70 #include <scsi/scsi_cmnd.h>
71 #include <scsi/scsi_device.h>
72 #include <scsi/scsi.h>
73 #include <scsi/scsi_host.h>
74
75 #include <pcmcia/cs_types.h>
76 #include <pcmcia/cs.h>
77 #include <pcmcia/cistpl.h>
78 #include <pcmcia/ds.h>
79 #include <pcmcia/ciscode.h>
80
81 /* ================================================================== */
82
83 #ifdef PCMCIA_DEBUG
84 static int pc_debug = PCMCIA_DEBUG;
85 module_param(pc_debug, int, 0);
86 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
87 static char *version =
88 "sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)";
89 #else
90 #define DEBUG(n, args...)
91 #endif
92
93 /* ================================================================== */
94
95 #define SYNC_MODE 0             /* Synchronous transfer mode */
96
97 /* Default configuration */
98 #define C1_IMG   0x07           /* ID=7 */
99 #define C2_IMG   0x48           /* FE SCSI2 */
100 #define C3_IMG   0x20           /* CDB */
101 #define C4_IMG   0x04           /* ANE */
102 #define C5_IMG   0xa4           /* ? changed from b6= AA PI SIE POL */
103 #define C7_IMG   0x80           /* added for SYM53C500 t. corner */
104
105 /* Hardware Registers: offsets from io_port (base) */
106
107 /* Control Register Set 0 */
108 #define TC_LSB          0x00            /* transfer counter lsb */
109 #define TC_MSB          0x01            /* transfer counter msb */
110 #define SCSI_FIFO       0x02            /* scsi fifo register */
111 #define CMD_REG         0x03            /* command register */
112 #define STAT_REG        0x04            /* status register */
113 #define DEST_ID         0x04            /* selection/reselection bus id */
114 #define INT_REG         0x05            /* interrupt status register */
115 #define SRTIMOUT        0x05            /* select/reselect timeout reg */
116 #define SEQ_REG         0x06            /* sequence step register */
117 #define SYNCPRD         0x06            /* synchronous transfer period */
118 #define FIFO_FLAGS      0x07            /* indicates # of bytes in fifo */
119 #define SYNCOFF         0x07            /* synchronous offset register */
120 #define CONFIG1         0x08            /* configuration register */
121 #define CLKCONV         0x09            /* clock conversion register */
122 /* #define TESTREG      0x0A */         /* test mode register */
123 #define CONFIG2         0x0B            /* configuration 2 register */
124 #define CONFIG3         0x0C            /* configuration 3 register */
125 #define CONFIG4         0x0D            /* configuration 4 register */
126 #define TC_HIGH         0x0E            /* transfer counter high */
127 /* #define FIFO_BOTTOM  0x0F */         /* reserve FIFO byte register */
128
129 /* Control Register Set 1 */
130 /* #define JUMPER_SENSE 0x00 */         /* jumper sense port reg (r/w) */
131 /* #define SRAM_PTR     0x01 */         /* SRAM address pointer reg (r/w) */
132 /* #define SRAM_DATA    0x02 */         /* SRAM data register (r/w) */
133 #define PIO_FIFO        0x04            /* PIO FIFO registers (r/w) */
134 /* #define PIO_FIFO1    0x05 */         /*  */
135 /* #define PIO_FIFO2    0x06 */         /*  */
136 /* #define PIO_FIFO3    0x07 */         /*  */
137 #define PIO_STATUS      0x08            /* PIO status (r/w) */
138 /* #define ATA_CMD      0x09 */         /* ATA command/status reg (r/w) */
139 /* #define ATA_ERR      0x0A */         /* ATA features/error reg (r/w) */
140 #define PIO_FLAG        0x0B            /* PIO flag interrupt enable (r/w) */
141 #define CONFIG5         0x09            /* configuration 5 register */
142 /* #define SIGNATURE    0x0E */         /* signature register (r) */
143 /* #define CONFIG6      0x0F */         /* configuration 6 register (r) */
144 #define CONFIG7         0x0d
145
146 /* select register set 0 */
147 #define REG0(x)         (outb(C4_IMG, (x) + CONFIG4))
148 /* select register set 1 */
149 #define REG1(x)         outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
150
151 #if SYM53C500_DEBUG
152 #define DEB(x) x
153 #else
154 #define DEB(x)
155 #endif
156
157 #if VERBOSE_SYM53C500_DEBUG
158 #define VDEB(x) x
159 #else
160 #define VDEB(x)
161 #endif
162
163 #define LOAD_DMA_COUNT(x, count) \
164   outb(count & 0xff, (x) + TC_LSB); \
165   outb((count >> 8) & 0xff, (x) + TC_MSB); \
166   outb((count >> 16) & 0xff, (x) + TC_HIGH);
167
168 /* Chip commands */
169 #define DMA_OP               0x80
170
171 #define SCSI_NOP             0x00
172 #define FLUSH_FIFO           0x01
173 #define CHIP_RESET           0x02
174 #define SCSI_RESET           0x03
175 #define RESELECT             0x40
176 #define SELECT_NO_ATN        0x41
177 #define SELECT_ATN           0x42
178 #define SELECT_ATN_STOP      0x43
179 #define ENABLE_SEL           0x44
180 #define DISABLE_SEL          0x45
181 #define SELECT_ATN3          0x46
182 #define RESELECT3            0x47
183 #define TRANSFER_INFO        0x10
184 #define INIT_CMD_COMPLETE    0x11
185 #define MSG_ACCEPT           0x12
186 #define TRANSFER_PAD         0x18
187 #define SET_ATN              0x1a
188 #define RESET_ATN            0x1b
189 #define SEND_MSG             0x20
190 #define SEND_STATUS          0x21
191 #define SEND_DATA            0x22
192 #define DISCONN_SEQ          0x23
193 #define TERMINATE_SEQ        0x24
194 #define TARG_CMD_COMPLETE    0x25
195 #define DISCONN              0x27
196 #define RECV_MSG             0x28
197 #define RECV_CMD             0x29
198 #define RECV_DATA            0x2a
199 #define RECV_CMD_SEQ         0x2b
200 #define TARGET_ABORT_DMA     0x04
201
202 /* ================================================================== */
203
204 struct scsi_info_t {
205         dev_link_t link;
206         dev_node_t node;
207         struct Scsi_Host *host;
208         unsigned short manf_id;
209 };
210
211 /*
212 *  Repository for per-instance host data.
213 */
214 struct sym53c500_data {
215         struct scsi_cmnd *current_SC;
216         int fast_pio;
217 };
218
219 enum Phase {
220     idle,
221     data_out,
222     data_in,
223     command_ph,
224     status_ph,
225     message_out,
226     message_in
227 };
228
229 /* ================================================================== */
230
231 static void
232 chip_init(int io_port)
233 {
234         REG1(io_port);
235         outb(0x01, io_port + PIO_STATUS);
236         outb(0x00, io_port + PIO_FLAG);
237
238         outb(C4_IMG, io_port + CONFIG4);        /* REG0(io_port); */
239         outb(C3_IMG, io_port + CONFIG3);
240         outb(C2_IMG, io_port + CONFIG2);
241         outb(C1_IMG, io_port + CONFIG1);
242
243         outb(0x05, io_port + CLKCONV);  /* clock conversion factor */
244         outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
245         outb(0x05, io_port + SYNCPRD);  /* Synchronous transfer period */
246         outb(SYNC_MODE, io_port + SYNCOFF);     /* synchronous mode */  
247 }
248
249 static void
250 SYM53C500_int_host_reset(int io_port)
251 {
252         outb(C4_IMG, io_port + CONFIG4);        /* REG0(io_port); */
253         outb(CHIP_RESET, io_port + CMD_REG);
254         outb(SCSI_NOP, io_port + CMD_REG);      /* required after reset */
255         outb(SCSI_RESET, io_port + CMD_REG);
256         chip_init(io_port);
257 }
258
259 static __inline__ int
260 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
261 {
262         int i;
263         int len;        /* current scsi fifo size */
264
265         REG1(base);
266         while (reqlen) {
267                 i = inb(base + PIO_STATUS);
268                 /* VDEB(printk("pio_status=%x\n", i)); */
269                 if (i & 0x80) 
270                         return 0;
271
272                 switch (i & 0x1e) {
273                 default:
274                 case 0x10:      /* fifo empty */
275                         len = 0;
276                         break;
277                 case 0x0:
278                         len = 1;
279                         break; 
280                 case 0x8:       /* fifo 1/3 full */
281                         len = 42;
282                         break;
283                 case 0xc:       /* fifo 2/3 full */
284                         len = 84;
285                         break;
286                 case 0xe:       /* fifo full */
287                         len = 128;
288                         break;
289                 }
290
291                 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
292                         return 0;
293                 }
294
295                 if (len) {
296                         if (len > reqlen) 
297                                 len = reqlen;
298
299                         if (fast_pio && len > 3) {
300                                 insl(base + PIO_FIFO, request, len >> 2);
301                                 request += len & 0xfc; 
302                                 reqlen -= len & 0xfc; 
303                         } else {
304                                 while (len--) {
305                                         *request++ = inb(base + PIO_FIFO);
306                                         reqlen--;
307                                 }
308                         } 
309                 }
310         }
311         return 0;
312 }
313
314 static __inline__ int
315 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
316 {
317         int i = 0;
318         int len;        /* current scsi fifo size */
319
320         REG1(base);
321         while (reqlen && !(i & 0x40)) {
322                 i = inb(base + PIO_STATUS);
323                 /* VDEB(printk("pio_status=%x\n", i)); */
324                 if (i & 0x80)   /* error */
325                         return 0;
326
327                 switch (i & 0x1e) {
328                 case 0x10:
329                         len = 128;
330                         break;
331                 case 0x0:
332                         len = 84;
333                         break;
334                 case 0x8:
335                         len = 42;
336                         break;
337                 case 0xc:
338                         len = 1;
339                         break;
340                 default:
341                 case 0xe:
342                         len = 0;
343                         break;
344                 }
345
346                 if (len) {
347                         if (len > reqlen)
348                                 len = reqlen;
349
350                         if (fast_pio && len > 3) {
351                                 outsl(base + PIO_FIFO, request, len >> 2);
352                                 request += len & 0xfc;
353                                 reqlen -= len & 0xfc;
354                         } else {
355                                 while (len--) {
356                                         outb(*request++, base + PIO_FIFO);
357                                         reqlen--;
358                                 }
359                         }
360                 }
361         }
362         return 0;
363 }
364
365 static irqreturn_t
366 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs)
367 {
368         unsigned long flags;
369         struct Scsi_Host *dev = dev_id;
370         DEB(unsigned char fifo_size;)
371         DEB(unsigned char seq_reg;)
372         unsigned char status, int_reg;
373         unsigned char pio_status;
374         struct scatterlist *sglist;
375         unsigned int sgcount;
376         int port_base = dev->io_port;
377         struct sym53c500_data *data =
378             (struct sym53c500_data *)dev->hostdata;
379         struct scsi_cmnd *curSC = data->current_SC;
380         int fast_pio = data->fast_pio;
381
382         spin_lock_irqsave(dev->host_lock, flags);
383
384         VDEB(printk("SYM53C500_intr called\n"));
385
386         REG1(port_base);
387         pio_status = inb(port_base + PIO_STATUS);
388         REG0(port_base);
389         status = inb(port_base + STAT_REG);
390         DEB(seq_reg = inb(port_base + SEQ_REG));
391         int_reg = inb(port_base + INT_REG);
392         DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
393
394 #if SYM53C500_DEBUG
395         printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 
396             status, seq_reg, int_reg, fifo_size);
397         printk(", pio=%02x\n", pio_status);
398 #endif /* SYM53C500_DEBUG */
399
400         if (int_reg & 0x80) {   /* SCSI reset intr */
401                 DEB(printk("SYM53C500: reset intr received\n"));
402                 curSC->result = DID_RESET << 16;
403                 goto idle_out;
404         }
405
406         if (pio_status & 0x80) {
407                 printk("SYM53C500: Warning: PIO error!\n");
408                 curSC->result = DID_ERROR << 16;
409                 goto idle_out;
410         }
411
412         if (status & 0x20) {            /* Parity error */
413                 printk("SYM53C500: Warning: parity error!\n");
414                 curSC->result = DID_PARITY << 16;
415                 goto idle_out;
416         }
417
418         if (status & 0x40) {            /* Gross error */
419                 printk("SYM53C500: Warning: gross error!\n");
420                 curSC->result = DID_ERROR << 16;
421                 goto idle_out;
422         }
423
424         if (int_reg & 0x20) {           /* Disconnect */
425                 DEB(printk("SYM53C500: disconnect intr received\n"));
426                 if (curSC->SCp.phase != message_in) {   /* Unexpected disconnect */
427                         curSC->result = DID_NO_CONNECT << 16;
428                 } else {        /* Command complete, return status and message */
429                         curSC->result = (curSC->SCp.Status & 0xff)
430                             | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
431                 }
432                 goto idle_out;
433         }
434
435         switch (status & 0x07) {        /* scsi phase */
436         case 0x00:                      /* DATA-OUT */
437                 if (int_reg & 0x10) {   /* Target requesting info transfer */
438                         curSC->SCp.phase = data_out;
439                         VDEB(printk("SYM53C500: Data-Out phase\n"));
440                         outb(FLUSH_FIFO, port_base + CMD_REG);
441                         LOAD_DMA_COUNT(port_base, curSC->request_bufflen);      /* Max transfer size */
442                         outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
443                         if (!curSC->use_sg)     /* Don't use scatter-gather */
444                                 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
445                         else {  /* use scatter-gather */
446                                 sgcount = curSC->use_sg;
447                                 sglist = curSC->request_buffer;
448                                 while (sgcount--) {
449                                         SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
450                                         sglist++;
451                                 }
452                         }
453                         REG0(port_base);
454                 }
455                 break;
456
457         case 0x01:              /* DATA-IN */
458                 if (int_reg & 0x10) {   /* Target requesting info transfer */
459                         curSC->SCp.phase = data_in;
460                         VDEB(printk("SYM53C500: Data-In phase\n"));
461                         outb(FLUSH_FIFO, port_base + CMD_REG);
462                         LOAD_DMA_COUNT(port_base, curSC->request_bufflen);      /* Max transfer size */
463                         outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
464                         if (!curSC->use_sg)     /* Don't use scatter-gather */
465                                 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
466                         else {  /* Use scatter-gather */
467                                 sgcount = curSC->use_sg;
468                                 sglist = curSC->request_buffer;
469                                 while (sgcount--) {
470                                         SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
471                                         sglist++;
472                                 }
473                         }
474                         REG0(port_base);
475                 }
476                 break;
477
478         case 0x02:              /* COMMAND */
479                 curSC->SCp.phase = command_ph;
480                 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
481                 break;
482
483         case 0x03:              /* STATUS */
484                 curSC->SCp.phase = status_ph;
485                 VDEB(printk("SYM53C500: Status phase\n"));
486                 outb(FLUSH_FIFO, port_base + CMD_REG);
487                 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
488                 break;
489
490         case 0x04:              /* Reserved */
491         case 0x05:              /* Reserved */
492                 printk("SYM53C500: WARNING: Reserved phase!!!\n");
493                 break;
494
495         case 0x06:              /* MESSAGE-OUT */
496                 DEB(printk("SYM53C500: Message-Out phase\n"));
497                 curSC->SCp.phase = message_out;
498                 outb(SET_ATN, port_base + CMD_REG);     /* Reject the message */
499                 outb(MSG_ACCEPT, port_base + CMD_REG);
500                 break;
501
502         case 0x07:              /* MESSAGE-IN */
503                 VDEB(printk("SYM53C500: Message-In phase\n"));
504                 curSC->SCp.phase = message_in;
505
506                 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
507                 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
508
509                 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
510                 DEB(printk("Status = %02x  Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
511
512                 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
513                         outb(SET_ATN, port_base + CMD_REG);     /* Reject message */
514                         DEB(printk("Discarding SAVE_POINTERS message\n"));
515                 }
516                 outb(MSG_ACCEPT, port_base + CMD_REG);
517                 break;
518         }
519 out:
520         spin_unlock_irqrestore(dev->host_lock, flags);
521         return IRQ_HANDLED;
522
523 idle_out:
524         curSC->SCp.phase = idle;
525         curSC->scsi_done(curSC);
526         goto out;
527 }
528
529 static void
530 SYM53C500_release(dev_link_t *link)
531 {
532         struct scsi_info_t *info = link->priv;
533         struct Scsi_Host *shost = info->host;
534
535         DEBUG(0, "SYM53C500_release(0x%p)\n", link);
536
537         /*
538         *  Do this before releasing/freeing resources.
539         */
540         scsi_remove_host(shost);
541
542         /*
543         *  Interrupts getting hosed on card removal.  Try
544         *  the following code, mostly from qlogicfas.c.
545         */
546         if (shost->irq)
547                 free_irq(shost->irq, shost);
548         if (shost->dma_channel != 0xff)
549                 free_dma(shost->dma_channel);
550         if (shost->io_port && shost->n_io_port)
551                 release_region(shost->io_port, shost->n_io_port);
552
553         pcmcia_disable_device(link->handle);
554
555         scsi_host_put(shost);
556 } /* SYM53C500_release */
557
558 static const char*
559 SYM53C500_info(struct Scsi_Host *SChost)
560 {
561         static char info_msg[256];
562         struct sym53c500_data *data =
563             (struct sym53c500_data *)SChost->hostdata;
564
565         DEB(printk("SYM53C500_info called\n"));
566         (void)snprintf(info_msg, sizeof(info_msg),
567             "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 
568             SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
569         return (info_msg);
570 }
571
572 static int 
573 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
574 {
575         int i;
576         int port_base = SCpnt->device->host->io_port;
577         struct sym53c500_data *data =
578             (struct sym53c500_data *)SCpnt->device->host->hostdata;
579
580         VDEB(printk("SYM53C500_queue called\n"));
581
582         DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 
583             SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 
584             SCpnt->device->lun,  SCpnt->request_bufflen));
585
586         VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
587             printk("cmd[%d]=%02x  ", i, SCpnt->cmnd[i]));
588         VDEB(printk("\n"));
589
590         data->current_SC = SCpnt;
591         data->current_SC->scsi_done = done;
592         data->current_SC->SCp.phase = command_ph;
593         data->current_SC->SCp.Status = 0;
594         data->current_SC->SCp.Message = 0;
595
596         /* We are locked here already by the mid layer */
597         REG0(port_base);
598         outb(scmd_id(SCpnt), port_base + DEST_ID);      /* set destination */
599         outb(FLUSH_FIFO, port_base + CMD_REG);  /* reset the fifos */
600
601         for (i = 0; i < SCpnt->cmd_len; i++) {
602                 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
603         }
604         outb(SELECT_NO_ATN, port_base + CMD_REG);
605
606         return 0;
607 }
608
609 static int 
610 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
611 {
612         int port_base = SCpnt->device->host->io_port;
613
614         DEB(printk("SYM53C500_host_reset called\n"));
615         spin_lock_irq(SCpnt->device->host->host_lock);
616         SYM53C500_int_host_reset(port_base);
617         spin_unlock_irq(SCpnt->device->host->host_lock);
618
619         return SUCCESS;
620 }
621
622 static int 
623 SYM53C500_biosparm(struct scsi_device *disk,
624     struct block_device *dev,
625     sector_t capacity, int *info_array)
626 {
627         int size;
628
629         DEB(printk("SYM53C500_biosparm called\n"));
630
631         size = capacity;
632         info_array[0] = 64;             /* heads */
633         info_array[1] = 32;             /* sectors */
634         info_array[2] = size >> 11;     /* cylinders */
635         if (info_array[2] > 1024) {     /* big disk */
636                 info_array[0] = 255;
637                 info_array[1] = 63;
638                 info_array[2] = size / (255 * 63);
639         }
640         return 0;
641 }
642
643 static ssize_t
644 SYM53C500_show_pio(struct class_device *cdev, char *buf)
645 {
646         struct Scsi_Host *SHp = class_to_shost(cdev);
647         struct sym53c500_data *data =
648             (struct sym53c500_data *)SHp->hostdata;
649
650         return snprintf(buf, 4, "%d\n", data->fast_pio);
651 }
652
653 static ssize_t
654 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
655 {
656         int pio;
657         struct Scsi_Host *SHp = class_to_shost(cdev);
658         struct sym53c500_data *data =
659             (struct sym53c500_data *)SHp->hostdata;
660
661         pio = simple_strtoul(buf, NULL, 0);
662         if (pio == 0 || pio == 1) {
663                 data->fast_pio = pio;
664                 return count;
665         }
666         else
667                 return -EINVAL;
668 }
669
670 /*
671 *  SCSI HBA device attributes we want to
672 *  make available via sysfs.
673 */
674 static struct class_device_attribute SYM53C500_pio_attr = {
675         .attr = {
676                 .name = "fast_pio",
677                 .mode = (S_IRUGO | S_IWUSR),
678         },
679         .show = SYM53C500_show_pio,
680         .store = SYM53C500_store_pio,
681 };
682
683 static struct class_device_attribute *SYM53C500_shost_attrs[] = {
684         &SYM53C500_pio_attr,
685         NULL,
686 };
687
688 /*
689 *  scsi_host_template initializer
690 */
691 static struct scsi_host_template sym53c500_driver_template = {
692      .module                    = THIS_MODULE,
693      .name                      = "SYM53C500",
694      .info                      = SYM53C500_info,
695      .queuecommand              = SYM53C500_queue,
696      .eh_host_reset_handler     = SYM53C500_host_reset,
697      .bios_param                = SYM53C500_biosparm,
698      .proc_name                 = "SYM53C500",
699      .can_queue                 = 1,
700      .this_id                   = 7,
701      .sg_tablesize              = 32,
702      .cmd_per_lun               = 1,
703      .use_clustering            = ENABLE_CLUSTERING,
704      .shost_attrs               = SYM53C500_shost_attrs
705 };
706
707 #define CS_CHECK(fn, ret) \
708 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
709
710 static void
711 SYM53C500_config(dev_link_t *link)
712 {
713         client_handle_t handle = link->handle;
714         struct scsi_info_t *info = link->priv;
715         tuple_t tuple;
716         cisparse_t parse;
717         int i, last_ret, last_fn;
718         int irq_level, port_base;
719         unsigned short tuple_data[32];
720         struct Scsi_Host *host;
721         struct scsi_host_template *tpnt = &sym53c500_driver_template;
722         struct sym53c500_data *data;
723
724         DEBUG(0, "SYM53C500_config(0x%p)\n", link);
725
726         tuple.TupleData = (cisdata_t *)tuple_data;
727         tuple.TupleDataMax = 64;
728         tuple.TupleOffset = 0;
729         tuple.DesiredTuple = CISTPL_CONFIG;
730         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
731         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
732         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
733         link->conf.ConfigBase = parse.config.base;
734
735         tuple.DesiredTuple = CISTPL_MANFID;
736         if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
737             (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS))
738                 info->manf_id = le16_to_cpu(tuple.TupleData[0]);
739
740         /* Configure card */
741         link->state |= DEV_CONFIG;
742
743         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
744         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
745         while (1) {
746                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
747                     pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
748                         goto next_entry;
749                 link->conf.ConfigIndex = parse.cftable_entry.index;
750                 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
751                 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
752
753                 if (link->io.BasePort1 != 0) {
754                         i = pcmcia_request_io(handle, &link->io);
755                         if (i == CS_SUCCESS)
756                                 break;
757                 }
758 next_entry:
759                 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
760         }
761
762         CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
763         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
764
765         /*
766         *  That's the trouble with copying liberally from another driver.
767         *  Some things probably aren't relevant, and I suspect this entire
768         *  section dealing with manufacturer IDs can be scrapped.       --rct
769         */
770         if ((info->manf_id == MANFID_MACNICA) ||
771             (info->manf_id == MANFID_PIONEER) ||
772             (info->manf_id == 0x0098)) {
773                 /* set ATAcmd */
774                 outb(0xb4, link->io.BasePort1 + 0xd);
775                 outb(0x24, link->io.BasePort1 + 0x9);
776                 outb(0x04, link->io.BasePort1 + 0xd);
777         }
778
779         /*
780         *  irq_level == 0 implies tpnt->can_queue == 0, which
781         *  is not supported in 2.6.  Thus, only irq_level > 0
782         *  will be allowed.
783         *
784         *  Possible port_base values are as follows:
785         *
786         *       0x130, 0x230, 0x280, 0x290,
787         *       0x320, 0x330, 0x340, 0x350
788         */
789         port_base = link->io.BasePort1;
790         irq_level = link->irq.AssignedIRQ;
791
792         DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
793             port_base, irq_level, USE_FAST_PIO);)
794
795         chip_init(port_base);
796
797         host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
798         if (!host) {
799                 printk("SYM53C500: Unable to register host, giving up.\n");
800                 goto err_release;
801         }
802
803         data = (struct sym53c500_data *)host->hostdata;
804
805         if (irq_level > 0) {
806                 if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) {
807                         printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
808                         goto err_free_scsi;
809                 }
810                 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
811         } else if (irq_level == 0) {
812                 DEB(printk("SYM53C500: No interrupts detected\n"));
813                 goto err_free_scsi;
814         } else {
815                 DEB(printk("SYM53C500: Shouldn't get here!\n"));
816                 goto err_free_scsi;
817         }
818
819         host->unique_id = port_base;
820         host->irq = irq_level;
821         host->io_port = port_base;
822         host->n_io_port = 0x10;
823         host->dma_channel = -1;
824
825         /*
826         *  Note fast_pio is set to USE_FAST_PIO by
827         *  default, but can be changed via "sysfs".
828         */
829         data->fast_pio = USE_FAST_PIO;
830
831         sprintf(info->node.dev_name, "scsi%d", host->host_no);
832         link->dev = &info->node;
833         info->host = host;
834
835         if (scsi_add_host(host, NULL))
836                 goto err_free_irq;
837
838         scsi_scan_host(host);
839
840         goto out;       /* SUCCESS */
841
842 err_free_irq:
843         free_irq(irq_level, host);
844 err_free_scsi:
845         scsi_host_put(host);
846 err_release:
847         release_region(port_base, 0x10);
848         printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
849
850 out:
851         link->state &= ~DEV_CONFIG_PENDING;
852         return;
853
854 cs_failed:
855         cs_error(link->handle, last_fn, last_ret);
856         SYM53C500_release(link);
857         return;
858 } /* SYM53C500_config */
859
860 static int sym53c500_resume(struct pcmcia_device *dev)
861 {
862         dev_link_t *link = dev_to_instance(dev);
863         struct scsi_info_t *info = link->priv;
864
865         if (link->state & DEV_CONFIG) {
866                 /* See earlier comment about manufacturer IDs. */
867                 if ((info->manf_id == MANFID_MACNICA) ||
868                     (info->manf_id == MANFID_PIONEER) ||
869                     (info->manf_id == 0x0098)) {
870                         outb(0x80, link->io.BasePort1 + 0xd);
871                         outb(0x24, link->io.BasePort1 + 0x9);
872                         outb(0x04, link->io.BasePort1 + 0xd);
873                 }
874                 /*
875                  *  If things don't work after a "resume",
876                  *  this is a good place to start looking.
877                  */
878                 SYM53C500_int_host_reset(link->io.BasePort1);
879         }
880
881         return 0;
882 }
883
884 static void
885 SYM53C500_detach(struct pcmcia_device *p_dev)
886 {
887         dev_link_t *link = dev_to_instance(p_dev);
888
889         DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
890
891         if (link->state & DEV_CONFIG)
892                 SYM53C500_release(link);
893
894         kfree(link->priv);
895         link->priv = NULL;
896 } /* SYM53C500_detach */
897
898 static int
899 SYM53C500_attach(struct pcmcia_device *p_dev)
900 {
901         struct scsi_info_t *info;
902         dev_link_t *link;
903
904         DEBUG(0, "SYM53C500_attach()\n");
905
906         /* Create new SCSI device */
907         info = kmalloc(sizeof(*info), GFP_KERNEL);
908         if (!info)
909                 return -ENOMEM;
910         memset(info, 0, sizeof(*info));
911         link = &info->link;
912         link->priv = info;
913         link->io.NumPorts1 = 16;
914         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
915         link->io.IOAddrLines = 10;
916         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
917         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
918         link->conf.Attributes = CONF_ENABLE_IRQ;
919         link->conf.Vcc = 50;
920         link->conf.IntType = INT_MEMORY_AND_IO;
921         link->conf.Present = PRESENT_OPTION;
922
923         link->handle = p_dev;
924         p_dev->instance = link;
925
926         link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
927         SYM53C500_config(link);
928
929         return 0;
930 } /* SYM53C500_attach */
931
932 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
933 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
934 MODULE_LICENSE("GPL");
935
936 static struct pcmcia_device_id sym53c500_ids[] = {
937         PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
938         PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
939         PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
940         PCMCIA_DEVICE_NULL,
941 };
942 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
943
944 static struct pcmcia_driver sym53c500_cs_driver = {
945         .owner          = THIS_MODULE,
946         .drv            = {
947                 .name   = "sym53c500_cs",
948         },
949         .probe          = SYM53C500_attach,
950         .remove         = SYM53C500_detach,
951         .id_table       = sym53c500_ids,
952         .resume         = sym53c500_resume,
953 };
954
955 static int __init
956 init_sym53c500_cs(void)
957 {
958         return pcmcia_register_driver(&sym53c500_cs_driver);
959 }
960
961 static void __exit
962 exit_sym53c500_cs(void)
963 {
964         pcmcia_unregister_driver(&sym53c500_cs_driver);
965 }
966
967 module_init(init_sym53c500_cs);
968 module_exit(exit_sym53c500_cs);