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ide: add struct ide_port_info instances to legacy host drivers
[deliverable/linux.git] / drivers / ide / ppc / mpc8xx.c
1 /*
2 * Copyright (C) 2000, 2001 Wolfgang Denk, wd@denx.de
3 * Modified for direct IDE interface
4 * by Thomas Lange, thomas@corelatus.com
5 * Modified for direct IDE interface on 8xx without using the PCMCIA
6 * controller
7 * by Steven.Scholz@imc-berlin.de
8 * Moved out of arch/ppc/kernel/m8xx_setup.c, other minor cleanups
9 * by Mathew Locke <mattl@mvista.com>
10 */
11
12 #include <linux/errno.h>
13 #include <linux/kernel.h>
14 #include <linux/mm.h>
15 #include <linux/stddef.h>
16 #include <linux/unistd.h>
17 #include <linux/ptrace.h>
18 #include <linux/slab.h>
19 #include <linux/user.h>
20 #include <linux/a.out.h>
21 #include <linux/tty.h>
22 #include <linux/major.h>
23 #include <linux/interrupt.h>
24 #include <linux/reboot.h>
25 #include <linux/init.h>
26 #include <linux/ioport.h>
27 #include <linux/ide.h>
28 #include <linux/bootmem.h>
29
30 #include <asm/mpc8xx.h>
31 #include <asm/mmu.h>
32 #include <asm/processor.h>
33 #include <asm/io.h>
34 #include <asm/pgtable.h>
35 #include <asm/ide.h>
36 #include <asm/8xx_immap.h>
37 #include <asm/machdep.h>
38 #include <asm/irq.h>
39
40 static int identify (volatile u8 *p);
41 static void print_fixed (volatile u8 *p);
42 static void print_funcid (int func);
43 static int check_ide_device (unsigned long base);
44
45 static void ide_interrupt_ack (void *dev);
46 static void m8xx_ide_set_pio_mode(ide_drive_t *drive, const u8 pio);
47
48 typedef struct ide_ioport_desc {
49 unsigned long base_off; /* Offset to PCMCIA memory */
50 unsigned long reg_off[IDE_NR_PORTS]; /* controller register offsets */
51 int irq; /* IRQ */
52 } ide_ioport_desc_t;
53
54 ide_ioport_desc_t ioport_dsc[MAX_HWIFS] = {
55 #ifdef IDE0_BASE_OFFSET
56 { IDE0_BASE_OFFSET,
57 {
58 IDE0_DATA_REG_OFFSET,
59 IDE0_ERROR_REG_OFFSET,
60 IDE0_NSECTOR_REG_OFFSET,
61 IDE0_SECTOR_REG_OFFSET,
62 IDE0_LCYL_REG_OFFSET,
63 IDE0_HCYL_REG_OFFSET,
64 IDE0_SELECT_REG_OFFSET,
65 IDE0_STATUS_REG_OFFSET,
66 IDE0_CONTROL_REG_OFFSET,
67 IDE0_IRQ_REG_OFFSET,
68 },
69 IDE0_INTERRUPT,
70 },
71 #ifdef IDE1_BASE_OFFSET
72 { IDE1_BASE_OFFSET,
73 {
74 IDE1_DATA_REG_OFFSET,
75 IDE1_ERROR_REG_OFFSET,
76 IDE1_NSECTOR_REG_OFFSET,
77 IDE1_SECTOR_REG_OFFSET,
78 IDE1_LCYL_REG_OFFSET,
79 IDE1_HCYL_REG_OFFSET,
80 IDE1_SELECT_REG_OFFSET,
81 IDE1_STATUS_REG_OFFSET,
82 IDE1_CONTROL_REG_OFFSET,
83 IDE1_IRQ_REG_OFFSET,
84 },
85 IDE1_INTERRUPT,
86 },
87 #endif /* IDE1_BASE_OFFSET */
88 #endif /* IDE0_BASE_OFFSET */
89 };
90
91 ide_pio_timings_t ide_pio_clocks[6];
92 int hold_time[6] = {30, 20, 15, 10, 10, 10 }; /* PIO Mode 5 with IORDY (nonstandard) */
93
94 /*
95 * Warning: only 1 (ONE) PCMCIA slot supported here,
96 * which must be correctly initialized by the firmware (PPCBoot).
97 */
98 static int _slot_ = -1; /* will be read from PCMCIA registers */
99
100 /* Make clock cycles and always round up */
101 #define PCMCIA_MK_CLKS( t, T ) (( (t) * ((T)/1000000) + 999U ) / 1000U )
102
103
104
105 /*
106 * IDE stuff.
107 */
108 static int
109 m8xx_ide_default_irq(unsigned long base)
110 {
111 #ifdef CONFIG_BLK_DEV_MPC8xx_IDE
112 if (base >= MAX_HWIFS)
113 return 0;
114
115 printk("[%d] m8xx_ide_default_irq %d\n",__LINE__,ioport_dsc[base].irq);
116
117 return (ioport_dsc[base].irq);
118 #else
119 return 9;
120 #endif
121 }
122
123 static unsigned long
124 m8xx_ide_default_io_base(int index)
125 {
126 return index;
127 }
128
129 #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
130 #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
131
132 /*
133 * The TQM850L hardware has two pins swapped! Grrrrgh!
134 */
135 #ifdef CONFIG_TQM850L
136 #define __MY_PCMCIA_GCRX_CXRESET PCMCIA_GCRX_CXOE
137 #define __MY_PCMCIA_GCRX_CXOE PCMCIA_GCRX_CXRESET
138 #else
139 #define __MY_PCMCIA_GCRX_CXRESET PCMCIA_GCRX_CXRESET
140 #define __MY_PCMCIA_GCRX_CXOE PCMCIA_GCRX_CXOE
141 #endif
142
143 #if defined(CONFIG_BLK_DEV_MPC8xx_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
144 #define PCMCIA_SCHLVL IDE0_INTERRUPT /* Status Change Interrupt Level */
145 static int pcmcia_schlvl = PCMCIA_SCHLVL;
146 #endif
147
148 /*
149 * See include/linux/ide.h for definition of hw_regs_t (p, base)
150 */
151
152 /*
153 * m8xx_ide_init_hwif_ports for a direct IDE interface _using_
154 */
155 #if defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_DIRECT)
156 static void
157 m8xx_ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
158 unsigned long ctrl_port, int *irq)
159 {
160 unsigned long *p = hw->io_ports;
161 int i;
162
163 typedef struct {
164 ulong br;
165 ulong or;
166 } pcmcia_win_t;
167 volatile pcmcia_win_t *win;
168 volatile pcmconf8xx_t *pcmp;
169
170 uint *pgcrx;
171 u32 pcmcia_phy_base;
172 u32 pcmcia_phy_end;
173 static unsigned long pcmcia_base = 0;
174 unsigned long base;
175
176 *p = 0;
177 if (irq)
178 *irq = 0;
179
180 pcmp = (pcmconf8xx_t *)(&(((immap_t *)IMAP_ADDR)->im_pcmcia));
181
182 if (!pcmcia_base) {
183 /*
184 * Read out PCMCIA registers. Since the reset values
185 * are undefined, we sure hope that they have been
186 * set up by firmware
187 */
188
189 /* Scan all registers for valid settings */
190 pcmcia_phy_base = 0xFFFFFFFF;
191 pcmcia_phy_end = 0;
192 /* br0 is start of brX and orX regs */
193 win = (pcmcia_win_t *) \
194 (&(((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0));
195 for (i = 0; i < 8; i++) {
196 if (win->or & 1) { /* This bank is marked as valid */
197 if (win->br < pcmcia_phy_base) {
198 pcmcia_phy_base = win->br;
199 }
200 if ((win->br + PCMCIA_MEM_SIZE) > pcmcia_phy_end) {
201 pcmcia_phy_end = win->br + PCMCIA_MEM_SIZE;
202 }
203 /* Check which slot that has been defined */
204 _slot_ = (win->or >> 2) & 1;
205
206 } /* Valid bank */
207 win++;
208 } /* for */
209
210 printk ("PCMCIA slot %c: phys mem %08x...%08x (size %08x)\n",
211 'A' + _slot_,
212 pcmcia_phy_base, pcmcia_phy_end,
213 pcmcia_phy_end - pcmcia_phy_base);
214
215 pcmcia_base=(unsigned long)ioremap(pcmcia_phy_base,
216 pcmcia_phy_end-pcmcia_phy_base);
217
218 #ifdef DEBUG
219 printk ("PCMCIA virt base: %08lx\n", pcmcia_base);
220 #endif
221 /* Compute clock cycles for PIO timings */
222 for (i=0; i<6; ++i) {
223 bd_t *binfo = (bd_t *)__res;
224
225 hold_time[i] =
226 PCMCIA_MK_CLKS (hold_time[i],
227 binfo->bi_busfreq);
228 ide_pio_clocks[i].setup_time =
229 PCMCIA_MK_CLKS (ide_pio_timings[i].setup_time,
230 binfo->bi_busfreq);
231 ide_pio_clocks[i].active_time =
232 PCMCIA_MK_CLKS (ide_pio_timings[i].active_time,
233 binfo->bi_busfreq);
234 ide_pio_clocks[i].cycle_time =
235 PCMCIA_MK_CLKS (ide_pio_timings[i].cycle_time,
236 binfo->bi_busfreq);
237 #if 0
238 printk ("PIO mode %d timings: %d/%d/%d => %d/%d/%d\n",
239 i,
240 ide_pio_clocks[i].setup_time,
241 ide_pio_clocks[i].active_time,
242 ide_pio_clocks[i].hold_time,
243 ide_pio_clocks[i].cycle_time,
244 ide_pio_timings[i].setup_time,
245 ide_pio_timings[i].active_time,
246 ide_pio_timings[i].hold_time,
247 ide_pio_timings[i].cycle_time);
248 #endif
249 }
250 }
251
252 if (data_port >= MAX_HWIFS)
253 return;
254
255 if (_slot_ == -1) {
256 printk ("PCMCIA slot has not been defined! Using A as default\n");
257 _slot_ = 0;
258 }
259
260 #ifdef CONFIG_IDE_8xx_PCCARD
261
262 #ifdef DEBUG
263 printk ("PIPR = 0x%08X slot %c ==> mask = 0x%X\n",
264 pcmp->pcmc_pipr,
265 'A' + _slot_,
266 M8XX_PCMCIA_CD1(_slot_) | M8XX_PCMCIA_CD2(_slot_) );
267 #endif /* DEBUG */
268
269 if (pcmp->pcmc_pipr & (M8XX_PCMCIA_CD1(_slot_)|M8XX_PCMCIA_CD2(_slot_))) {
270 printk ("No card in slot %c: PIPR=%08x\n",
271 'A' + _slot_, (u32) pcmp->pcmc_pipr);
272 return; /* No card in slot */
273 }
274
275 check_ide_device (pcmcia_base);
276
277 #endif /* CONFIG_IDE_8xx_PCCARD */
278
279 base = pcmcia_base + ioport_dsc[data_port].base_off;
280 #ifdef DEBUG
281 printk ("base: %08x + %08x = %08x\n",
282 pcmcia_base, ioport_dsc[data_port].base_off, base);
283 #endif
284
285 for (i = 0; i < IDE_NR_PORTS; ++i) {
286 #ifdef DEBUG
287 printk ("port[%d]: %08x + %08x = %08x\n",
288 i,
289 base,
290 ioport_dsc[data_port].reg_off[i],
291 i, base + ioport_dsc[data_port].reg_off[i]);
292 #endif
293 *p++ = base + ioport_dsc[data_port].reg_off[i];
294 }
295
296 if (irq) {
297 #ifdef CONFIG_IDE_8xx_PCCARD
298 unsigned int reg;
299
300 *irq = ioport_dsc[data_port].irq;
301 if (_slot_)
302 pgcrx = &((immap_t *) IMAP_ADDR)->im_pcmcia.pcmc_pgcrb;
303 else
304 pgcrx = &((immap_t *) IMAP_ADDR)->im_pcmcia.pcmc_pgcra;
305
306 reg = *pgcrx;
307 reg |= mk_int_int_mask (pcmcia_schlvl) << 24;
308 reg |= mk_int_int_mask (pcmcia_schlvl) << 16;
309 *pgcrx = reg;
310 #else /* direct connected IDE drive, i.e. external IRQ, not the PCMCIA irq */
311 *irq = ioport_dsc[data_port].irq;
312 #endif /* CONFIG_IDE_8xx_PCCARD */
313 }
314
315 ide_hwifs[data_port].pio_mask = ATA_PIO4;
316 ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
317 ide_hwifs[data_port].ack_intr = (ide_ack_intr_t *)ide_interrupt_ack;
318
319 /* Enable Harddisk Interrupt,
320 * and make it edge sensitive
321 */
322 /* (11-18) Set edge detect for irq, no wakeup from low power mode */
323 ((immap_t *)IMAP_ADDR)->im_siu_conf.sc_siel |=
324 (0x80000000 >> ioport_dsc[data_port].irq);
325
326 #ifdef CONFIG_IDE_8xx_PCCARD
327 /* Make sure we don't get garbage irq */
328 ((immap_t *) IMAP_ADDR)->im_pcmcia.pcmc_pscr = 0xFFFF;
329
330 /* Enable falling edge irq */
331 pcmp->pcmc_per = 0x100000 >> (16 * _slot_);
332 #endif /* CONFIG_IDE_8xx_PCCARD */
333 } /* m8xx_ide_init_hwif_ports() using 8xx internal PCMCIA interface */
334 #endif /* CONFIG_IDE_8xx_PCCARD || CONFIG_IDE_8xx_DIRECT */
335
336 /*
337 * m8xx_ide_init_hwif_ports for a direct IDE interface _not_ using
338 * MPC8xx's internal PCMCIA interface
339 */
340 #if defined(CONFIG_IDE_EXT_DIRECT)
341 void m8xx_ide_init_hwif_ports (hw_regs_t *hw,
342 unsigned long data_port, unsigned long ctrl_port, int *irq)
343 {
344 unsigned long *p = hw->io_ports;
345 int i;
346
347 u32 ide_phy_base;
348 u32 ide_phy_end;
349 static unsigned long ide_base = 0;
350 unsigned long base;
351
352 *p = 0;
353 if (irq)
354 *irq = 0;
355
356 if (!ide_base) {
357
358 /* TODO:
359 * - add code to read ORx, BRx
360 */
361 ide_phy_base = CFG_ATA_BASE_ADDR;
362 ide_phy_end = CFG_ATA_BASE_ADDR + 0x200;
363
364 printk ("IDE phys mem : %08x...%08x (size %08x)\n",
365 ide_phy_base, ide_phy_end,
366 ide_phy_end - ide_phy_base);
367
368 ide_base=(unsigned long)ioremap(ide_phy_base,
369 ide_phy_end-ide_phy_base);
370
371 #ifdef DEBUG
372 printk ("IDE virt base: %08lx\n", ide_base);
373 #endif
374 }
375
376 if (data_port >= MAX_HWIFS)
377 return;
378
379 base = ide_base + ioport_dsc[data_port].base_off;
380 #ifdef DEBUG
381 printk ("base: %08x + %08x = %08x\n",
382 ide_base, ioport_dsc[data_port].base_off, base);
383 #endif
384
385 for (i = 0; i < IDE_NR_PORTS; ++i) {
386 #ifdef DEBUG
387 printk ("port[%d]: %08x + %08x = %08x\n",
388 i,
389 base,
390 ioport_dsc[data_port].reg_off[i],
391 i, base + ioport_dsc[data_port].reg_off[i]);
392 #endif
393 *p++ = base + ioport_dsc[data_port].reg_off[i];
394 }
395
396 if (irq) {
397 /* direct connected IDE drive, i.e. external IRQ */
398 *irq = ioport_dsc[data_port].irq;
399 }
400
401 ide_hwifs[data_port].pio_mask = ATA_PIO4;
402 ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
403 ide_hwifs[data_port].ack_intr = (ide_ack_intr_t *)ide_interrupt_ack;
404
405 /* Enable Harddisk Interrupt,
406 * and make it edge sensitive
407 */
408 /* (11-18) Set edge detect for irq, no wakeup from low power mode */
409 ((immap_t *) IMAP_ADDR)->im_siu_conf.sc_siel |=
410 (0x80000000 >> ioport_dsc[data_port].irq);
411 } /* m8xx_ide_init_hwif_ports() for CONFIG_IDE_8xx_DIRECT */
412
413 #endif /* CONFIG_IDE_8xx_DIRECT */
414
415
416 /* -------------------------------------------------------------------- */
417
418
419 /* PCMCIA Timing */
420 #ifndef PCMCIA_SHT
421 #define PCMCIA_SHT(t) ((t & 0x0F)<<16) /* Strobe Hold Time */
422 #define PCMCIA_SST(t) ((t & 0x0F)<<12) /* Strobe Setup Time */
423 #define PCMCIA_SL(t) ((t==32) ? 0 : ((t & 0x1F)<<7)) /* Strobe Length */
424 #endif
425
426 /* Calculate PIO timings */
427 static void m8xx_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
428 {
429 #if defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_DIRECT)
430 volatile pcmconf8xx_t *pcmp;
431 ulong timing, mask, reg;
432
433 pcmp = (pcmconf8xx_t *)(&(((immap_t *)IMAP_ADDR)->im_pcmcia));
434
435 mask = ~(PCMCIA_SHT(0xFF) | PCMCIA_SST(0xFF) | PCMCIA_SL(0xFF));
436
437 timing = PCMCIA_SHT(hold_time[pio] )
438 | PCMCIA_SST(ide_pio_clocks[pio].setup_time )
439 | PCMCIA_SL (ide_pio_clocks[pio].active_time)
440 ;
441
442 #if 1
443 printk ("Setting timing bits 0x%08lx in PCMCIA controller\n", timing);
444 #endif
445 if ((reg = pcmp->pcmc_por0 & mask) != 0)
446 pcmp->pcmc_por0 = reg | timing;
447
448 if ((reg = pcmp->pcmc_por1 & mask) != 0)
449 pcmp->pcmc_por1 = reg | timing;
450
451 if ((reg = pcmp->pcmc_por2 & mask) != 0)
452 pcmp->pcmc_por2 = reg | timing;
453
454 if ((reg = pcmp->pcmc_por3 & mask) != 0)
455 pcmp->pcmc_por3 = reg | timing;
456
457 if ((reg = pcmp->pcmc_por4 & mask) != 0)
458 pcmp->pcmc_por4 = reg | timing;
459
460 if ((reg = pcmp->pcmc_por5 & mask) != 0)
461 pcmp->pcmc_por5 = reg | timing;
462
463 if ((reg = pcmp->pcmc_por6 & mask) != 0)
464 pcmp->pcmc_por6 = reg | timing;
465
466 if ((reg = pcmp->pcmc_por7 & mask) != 0)
467 pcmp->pcmc_por7 = reg | timing;
468
469 #elif defined(CONFIG_IDE_EXT_DIRECT)
470
471 printk("%s[%d] %s: not implemented yet!\n",
472 __FILE__,__LINE__,__FUNCTION__);
473 #endif /* defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_PCMCIA */
474 }
475
476 static void
477 ide_interrupt_ack (void *dev)
478 {
479 #ifdef CONFIG_IDE_8xx_PCCARD
480 u_int pscr, pipr;
481
482 #if (PCMCIA_SOCKETS_NO == 2)
483 u_int _slot_;
484 #endif
485
486 /* get interrupt sources */
487
488 pscr = ((volatile immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr;
489 pipr = ((volatile immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr;
490
491 /*
492 * report only if both card detect signals are the same
493 * not too nice done,
494 * we depend on that CD2 is the bit to the left of CD1...
495 */
496
497 if(_slot_==-1){
498 printk("PCMCIA slot has not been defined! Using A as default\n");
499 _slot_=0;
500 }
501
502 if(((pipr & M8XX_PCMCIA_CD2(_slot_)) >> 1) ^
503 (pipr & M8XX_PCMCIA_CD1(_slot_)) ) {
504 printk ("card detect interrupt\n");
505 }
506 /* clear the interrupt sources */
507 ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr = pscr;
508
509 #else /* ! CONFIG_IDE_8xx_PCCARD */
510 /*
511 * Only CONFIG_IDE_8xx_PCCARD is using the interrupt of the
512 * MPC8xx's PCMCIA controller, so there is nothing to be done here
513 * for CONFIG_IDE_8xx_DIRECT and CONFIG_IDE_EXT_DIRECT.
514 * The interrupt is handled somewhere else. -- Steven
515 */
516 #endif /* CONFIG_IDE_8xx_PCCARD */
517 }
518
519
520
521 /*
522 * CIS Tupel codes
523 */
524 #define CISTPL_NULL 0x00
525 #define CISTPL_DEVICE 0x01
526 #define CISTPL_LONGLINK_CB 0x02
527 #define CISTPL_INDIRECT 0x03
528 #define CISTPL_CONFIG_CB 0x04
529 #define CISTPL_CFTABLE_ENTRY_CB 0x05
530 #define CISTPL_LONGLINK_MFC 0x06
531 #define CISTPL_BAR 0x07
532 #define CISTPL_PWR_MGMNT 0x08
533 #define CISTPL_EXTDEVICE 0x09
534 #define CISTPL_CHECKSUM 0x10
535 #define CISTPL_LONGLINK_A 0x11
536 #define CISTPL_LONGLINK_C 0x12
537 #define CISTPL_LINKTARGET 0x13
538 #define CISTPL_NO_LINK 0x14
539 #define CISTPL_VERS_1 0x15
540 #define CISTPL_ALTSTR 0x16
541 #define CISTPL_DEVICE_A 0x17
542 #define CISTPL_JEDEC_C 0x18
543 #define CISTPL_JEDEC_A 0x19
544 #define CISTPL_CONFIG 0x1a
545 #define CISTPL_CFTABLE_ENTRY 0x1b
546 #define CISTPL_DEVICE_OC 0x1c
547 #define CISTPL_DEVICE_OA 0x1d
548 #define CISTPL_DEVICE_GEO 0x1e
549 #define CISTPL_DEVICE_GEO_A 0x1f
550 #define CISTPL_MANFID 0x20
551 #define CISTPL_FUNCID 0x21
552 #define CISTPL_FUNCE 0x22
553 #define CISTPL_SWIL 0x23
554 #define CISTPL_END 0xff
555
556 /*
557 * CIS Function ID codes
558 */
559 #define CISTPL_FUNCID_MULTI 0x00
560 #define CISTPL_FUNCID_MEMORY 0x01
561 #define CISTPL_FUNCID_SERIAL 0x02
562 #define CISTPL_FUNCID_PARALLEL 0x03
563 #define CISTPL_FUNCID_FIXED 0x04
564 #define CISTPL_FUNCID_VIDEO 0x05
565 #define CISTPL_FUNCID_NETWORK 0x06
566 #define CISTPL_FUNCID_AIMS 0x07
567 #define CISTPL_FUNCID_SCSI 0x08
568
569 /*
570 * Fixed Disk FUNCE codes
571 */
572 #define CISTPL_IDE_INTERFACE 0x01
573
574 #define CISTPL_FUNCE_IDE_IFACE 0x01
575 #define CISTPL_FUNCE_IDE_MASTER 0x02
576 #define CISTPL_FUNCE_IDE_SLAVE 0x03
577
578 /* First feature byte */
579 #define CISTPL_IDE_SILICON 0x04
580 #define CISTPL_IDE_UNIQUE 0x08
581 #define CISTPL_IDE_DUAL 0x10
582
583 /* Second feature byte */
584 #define CISTPL_IDE_HAS_SLEEP 0x01
585 #define CISTPL_IDE_HAS_STANDBY 0x02
586 #define CISTPL_IDE_HAS_IDLE 0x04
587 #define CISTPL_IDE_LOW_POWER 0x08
588 #define CISTPL_IDE_REG_INHIBIT 0x10
589 #define CISTPL_IDE_HAS_INDEX 0x20
590 #define CISTPL_IDE_IOIS16 0x40
591
592
593 /* -------------------------------------------------------------------- */
594
595
596 #define MAX_TUPEL_SZ 512
597 #define MAX_FEATURES 4
598
599 static int check_ide_device (unsigned long base)
600 {
601 volatile u8 *ident = NULL;
602 volatile u8 *feature_p[MAX_FEATURES];
603 volatile u8 *p, *start;
604 int n_features = 0;
605 u8 func_id = ~0;
606 u8 code, len;
607 unsigned short config_base = 0;
608 int found = 0;
609 int i;
610
611 #ifdef DEBUG
612 printk ("PCMCIA MEM: %08lX\n", base);
613 #endif
614 start = p = (volatile u8 *) base;
615
616 while ((p - start) < MAX_TUPEL_SZ) {
617
618 code = *p; p += 2;
619
620 if (code == 0xFF) { /* End of chain */
621 break;
622 }
623
624 len = *p; p += 2;
625 #ifdef DEBUG_PCMCIA
626 { volatile u8 *q = p;
627 printk ("\nTuple code %02x length %d\n\tData:",
628 code, len);
629
630 for (i = 0; i < len; ++i) {
631 printk (" %02x", *q);
632 q+= 2;
633 }
634 }
635 #endif /* DEBUG_PCMCIA */
636 switch (code) {
637 case CISTPL_VERS_1:
638 ident = p + 4;
639 break;
640 case CISTPL_FUNCID:
641 func_id = *p;
642 break;
643 case CISTPL_FUNCE:
644 if (n_features < MAX_FEATURES)
645 feature_p[n_features++] = p;
646 break;
647 case CISTPL_CONFIG:
648 config_base = (*(p+6) << 8) + (*(p+4));
649 default:
650 break;
651 }
652 p += 2 * len;
653 }
654
655 found = identify (ident);
656
657 if (func_id != ((u8)~0)) {
658 print_funcid (func_id);
659
660 if (func_id == CISTPL_FUNCID_FIXED)
661 found = 1;
662 else
663 return (1); /* no disk drive */
664 }
665
666 for (i=0; i<n_features; ++i) {
667 print_fixed (feature_p[i]);
668 }
669
670 if (!found) {
671 printk ("unknown card type\n");
672 return (1);
673 }
674
675 /* set level mode irq and I/O mapped device in config reg*/
676 *((u8 *)(base + config_base)) = 0x41;
677
678 return (0);
679 }
680
681 /* ------------------------------------------------------------------------- */
682
683 static void print_funcid (int func)
684 {
685 switch (func) {
686 case CISTPL_FUNCID_MULTI:
687 printk (" Multi-Function");
688 break;
689 case CISTPL_FUNCID_MEMORY:
690 printk (" Memory");
691 break;
692 case CISTPL_FUNCID_SERIAL:
693 printk (" Serial Port");
694 break;
695 case CISTPL_FUNCID_PARALLEL:
696 printk (" Parallel Port");
697 break;
698 case CISTPL_FUNCID_FIXED:
699 printk (" Fixed Disk");
700 break;
701 case CISTPL_FUNCID_VIDEO:
702 printk (" Video Adapter");
703 break;
704 case CISTPL_FUNCID_NETWORK:
705 printk (" Network Adapter");
706 break;
707 case CISTPL_FUNCID_AIMS:
708 printk (" AIMS Card");
709 break;
710 case CISTPL_FUNCID_SCSI:
711 printk (" SCSI Adapter");
712 break;
713 default:
714 printk (" Unknown");
715 break;
716 }
717 printk (" Card\n");
718 }
719
720 /* ------------------------------------------------------------------------- */
721
722 static void print_fixed (volatile u8 *p)
723 {
724 if (p == NULL)
725 return;
726
727 switch (*p) {
728 case CISTPL_FUNCE_IDE_IFACE:
729 { u8 iface = *(p+2);
730
731 printk ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
732 printk (" interface ");
733 break;
734 }
735 case CISTPL_FUNCE_IDE_MASTER:
736 case CISTPL_FUNCE_IDE_SLAVE:
737 { u8 f1 = *(p+2);
738 u8 f2 = *(p+4);
739
740 printk ((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
741
742 if (f1 & CISTPL_IDE_UNIQUE)
743 printk (" [unique]");
744
745 printk ((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
746
747 if (f2 & CISTPL_IDE_HAS_SLEEP)
748 printk (" [sleep]");
749
750 if (f2 & CISTPL_IDE_HAS_STANDBY)
751 printk (" [standby]");
752
753 if (f2 & CISTPL_IDE_HAS_IDLE)
754 printk (" [idle]");
755
756 if (f2 & CISTPL_IDE_LOW_POWER)
757 printk (" [low power]");
758
759 if (f2 & CISTPL_IDE_REG_INHIBIT)
760 printk (" [reg inhibit]");
761
762 if (f2 & CISTPL_IDE_HAS_INDEX)
763 printk (" [index]");
764
765 if (f2 & CISTPL_IDE_IOIS16)
766 printk (" [IOis16]");
767
768 break;
769 }
770 }
771 printk ("\n");
772 }
773
774 /* ------------------------------------------------------------------------- */
775
776
777 #define MAX_IDENT_CHARS 64
778 #define MAX_IDENT_FIELDS 4
779
780 static u8 *known_cards[] = {
781 "ARGOSY PnPIDE D5",
782 NULL
783 };
784
785 static int identify (volatile u8 *p)
786 {
787 u8 id_str[MAX_IDENT_CHARS];
788 u8 data;
789 u8 *t;
790 u8 **card;
791 int i, done;
792
793 if (p == NULL)
794 return (0); /* Don't know */
795
796 t = id_str;
797 done =0;
798
799 for (i=0; i<=4 && !done; ++i, p+=2) {
800 while ((data = *p) != '\0') {
801 if (data == 0xFF) {
802 done = 1;
803 break;
804 }
805 *t++ = data;
806 if (t == &id_str[MAX_IDENT_CHARS-1]) {
807 done = 1;
808 break;
809 }
810 p += 2;
811 }
812 if (!done)
813 *t++ = ' ';
814 }
815 *t = '\0';
816 while (--t > id_str) {
817 if (*t == ' ')
818 *t = '\0';
819 else
820 break;
821 }
822 printk ("Card ID: %s\n", id_str);
823
824 for (card=known_cards; *card; ++card) {
825 if (strcmp(*card, id_str) == 0) { /* found! */
826 return (1);
827 }
828 }
829
830 return (0); /* don't know */
831 }
832
833 void m8xx_ide_init(void)
834 {
835 ppc_ide_md.default_irq = m8xx_ide_default_irq;
836 ppc_ide_md.default_io_base = m8xx_ide_default_io_base;
837 ppc_ide_md.ide_init_hwif = m8xx_ide_init_hwif_ports;
838 }
839
840 static int __init mpc8xx_ide_probe(void)
841 {
842 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
843
844 #ifdef IDE0_BASE_OFFSET
845 idx[0] = 0;
846 #ifdef IDE1_BASE_OFFSET
847 idx[1] = 1;
848 #endif
849 #endif
850
851 ide_device_add(idx, NULL);
852
853 return 0;
854 }
855
856 module_init(mpc8xx_ide_probe);
Linux kernel - Deliverables
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