2 * linux/drivers/ide/ppc/pmac.c
4 * Support for IDE interfaces on PowerMacs.
5 * These IDE interfaces are memory-mapped and have a DBDMA channel
8 * Copyright (C) 1998-2003 Paul Mackerras & Ben. Herrenschmidt
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
15 * Some code taken from drivers/ide/ide-dma.c:
17 * Copyright (c) 1995-1998 Mark Lord
19 * TODO: - Use pre-calculated (kauai) timing tables all the time and
20 * get rid of the "rounded" tables used previously, so we have the
21 * same table format for all controllers and can then just have one
25 #include <linux/types.h>
26 #include <linux/kernel.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
29 #include <linux/ide.h>
30 #include <linux/notifier.h>
31 #include <linux/reboot.h>
32 #include <linux/pci.h>
33 #include <linux/adb.h>
34 #include <linux/pmu.h>
35 #include <linux/scatterlist.h>
39 #include <asm/dbdma.h>
41 #include <asm/pci-bridge.h>
42 #include <asm/machdep.h>
43 #include <asm/pmac_feature.h>
44 #include <asm/sections.h>
48 #include <asm/mediabay.h>
51 #include "ide-timing.h"
55 #define DMA_WAIT_TIMEOUT 50
57 typedef struct pmac_ide_hwif {
58 unsigned long regbase;
62 unsigned cable_80 : 1;
63 unsigned mediabay : 1;
64 unsigned broken_dma : 1;
65 unsigned broken_dma_warn : 1;
66 struct device_node* node;
67 struct macio_dev *mdev;
69 volatile u32 __iomem * *kauai_fcr;
70 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
71 /* Those fields are duplicating what is in hwif. We currently
72 * can't use the hwif ones because of some assumptions that are
73 * beeing done by the generic code about the kind of dma controller
74 * and format of the dma table. This will have to be fixed though.
76 volatile struct dbdma_regs __iomem * dma_regs;
77 struct dbdma_cmd* dma_table_cpu;
82 static pmac_ide_hwif_t pmac_ide[MAX_HWIFS];
83 static int pmac_ide_count;
86 controller_ohare, /* OHare based */
87 controller_heathrow, /* Heathrow/Paddington */
88 controller_kl_ata3, /* KeyLargo ATA-3 */
89 controller_kl_ata4, /* KeyLargo ATA-4 */
90 controller_un_ata6, /* UniNorth2 ATA-6 */
91 controller_k2_ata6, /* K2 ATA-6 */
92 controller_sh_ata6, /* Shasta ATA-6 */
95 static const char* model_name[] = {
96 "OHare ATA", /* OHare based */
97 "Heathrow ATA", /* Heathrow/Paddington */
98 "KeyLargo ATA-3", /* KeyLargo ATA-3 (MDMA only) */
99 "KeyLargo ATA-4", /* KeyLargo ATA-4 (UDMA/66) */
100 "UniNorth ATA-6", /* UniNorth2 ATA-6 (UDMA/100) */
101 "K2 ATA-6", /* K2 ATA-6 (UDMA/100) */
102 "Shasta ATA-6", /* Shasta ATA-6 (UDMA/133) */
106 * Extra registers, both 32-bit little-endian
108 #define IDE_TIMING_CONFIG 0x200
109 #define IDE_INTERRUPT 0x300
111 /* Kauai (U2) ATA has different register setup */
112 #define IDE_KAUAI_PIO_CONFIG 0x200
113 #define IDE_KAUAI_ULTRA_CONFIG 0x210
114 #define IDE_KAUAI_POLL_CONFIG 0x220
117 * Timing configuration register definitions
120 /* Number of IDE_SYSCLK_NS ticks, argument is in nanoseconds */
121 #define SYSCLK_TICKS(t) (((t) + IDE_SYSCLK_NS - 1) / IDE_SYSCLK_NS)
122 #define SYSCLK_TICKS_66(t) (((t) + IDE_SYSCLK_66_NS - 1) / IDE_SYSCLK_66_NS)
123 #define IDE_SYSCLK_NS 30 /* 33Mhz cell */
124 #define IDE_SYSCLK_66_NS 15 /* 66Mhz cell */
126 /* 133Mhz cell, found in shasta.
127 * See comments about 100 Mhz Uninorth 2...
128 * Note that PIO_MASK and MDMA_MASK seem to overlap
130 #define TR_133_PIOREG_PIO_MASK 0xff000fff
131 #define TR_133_PIOREG_MDMA_MASK 0x00fff800
132 #define TR_133_UDMAREG_UDMA_MASK 0x0003ffff
133 #define TR_133_UDMAREG_UDMA_EN 0x00000001
135 /* 100Mhz cell, found in Uninorth 2. I don't have much infos about
136 * this one yet, it appears as a pci device (106b/0033) on uninorth
137 * internal PCI bus and it's clock is controlled like gem or fw. It
138 * appears to be an evolution of keylargo ATA4 with a timing register
139 * extended to 2 32bits registers and a similar DBDMA channel. Other
140 * registers seem to exist but I can't tell much about them.
142 * So far, I'm using pre-calculated tables for this extracted from
143 * the values used by the MacOS X driver.
145 * The "PIO" register controls PIO and MDMA timings, the "ULTRA"
146 * register controls the UDMA timings. At least, it seems bit 0
147 * of this one enables UDMA vs. MDMA, and bits 4..7 are the
148 * cycle time in units of 10ns. Bits 8..15 are used by I don't
149 * know their meaning yet
151 #define TR_100_PIOREG_PIO_MASK 0xff000fff
152 #define TR_100_PIOREG_MDMA_MASK 0x00fff000
153 #define TR_100_UDMAREG_UDMA_MASK 0x0000ffff
154 #define TR_100_UDMAREG_UDMA_EN 0x00000001
157 /* 66Mhz cell, found in KeyLargo. Can do ultra mode 0 to 2 on
158 * 40 connector cable and to 4 on 80 connector one.
159 * Clock unit is 15ns (66Mhz)
161 * 3 Values can be programmed:
162 * - Write data setup, which appears to match the cycle time. They
163 * also call it DIOW setup.
164 * - Ready to pause time (from spec)
165 * - Address setup. That one is weird. I don't see where exactly
166 * it fits in UDMA cycles, I got it's name from an obscure piece
167 * of commented out code in Darwin. They leave it to 0, we do as
168 * well, despite a comment that would lead to think it has a
170 * Apple also add 60ns to the write data setup (or cycle time ?) on
173 #define TR_66_UDMA_MASK 0xfff00000
174 #define TR_66_UDMA_EN 0x00100000 /* Enable Ultra mode for DMA */
175 #define TR_66_UDMA_ADDRSETUP_MASK 0xe0000000 /* Address setup */
176 #define TR_66_UDMA_ADDRSETUP_SHIFT 29
177 #define TR_66_UDMA_RDY2PAUS_MASK 0x1e000000 /* Ready 2 pause time */
178 #define TR_66_UDMA_RDY2PAUS_SHIFT 25
179 #define TR_66_UDMA_WRDATASETUP_MASK 0x01e00000 /* Write data setup time */
180 #define TR_66_UDMA_WRDATASETUP_SHIFT 21
181 #define TR_66_MDMA_MASK 0x000ffc00
182 #define TR_66_MDMA_RECOVERY_MASK 0x000f8000
183 #define TR_66_MDMA_RECOVERY_SHIFT 15
184 #define TR_66_MDMA_ACCESS_MASK 0x00007c00
185 #define TR_66_MDMA_ACCESS_SHIFT 10
186 #define TR_66_PIO_MASK 0x000003ff
187 #define TR_66_PIO_RECOVERY_MASK 0x000003e0
188 #define TR_66_PIO_RECOVERY_SHIFT 5
189 #define TR_66_PIO_ACCESS_MASK 0x0000001f
190 #define TR_66_PIO_ACCESS_SHIFT 0
192 /* 33Mhz cell, found in OHare, Heathrow (& Paddington) and KeyLargo
193 * Can do pio & mdma modes, clock unit is 30ns (33Mhz)
195 * The access time and recovery time can be programmed. Some older
196 * Darwin code base limit OHare to 150ns cycle time. I decided to do
197 * the same here fore safety against broken old hardware ;)
198 * The HalfTick bit, when set, adds half a clock (15ns) to the access
199 * time and removes one from recovery. It's not supported on KeyLargo
200 * implementation afaik. The E bit appears to be set for PIO mode 0 and
201 * is used to reach long timings used in this mode.
203 #define TR_33_MDMA_MASK 0x003ff800
204 #define TR_33_MDMA_RECOVERY_MASK 0x001f0000
205 #define TR_33_MDMA_RECOVERY_SHIFT 16
206 #define TR_33_MDMA_ACCESS_MASK 0x0000f800
207 #define TR_33_MDMA_ACCESS_SHIFT 11
208 #define TR_33_MDMA_HALFTICK 0x00200000
209 #define TR_33_PIO_MASK 0x000007ff
210 #define TR_33_PIO_E 0x00000400
211 #define TR_33_PIO_RECOVERY_MASK 0x000003e0
212 #define TR_33_PIO_RECOVERY_SHIFT 5
213 #define TR_33_PIO_ACCESS_MASK 0x0000001f
214 #define TR_33_PIO_ACCESS_SHIFT 0
217 * Interrupt register definitions
219 #define IDE_INTR_DMA 0x80000000
220 #define IDE_INTR_DEVICE 0x40000000
223 * FCR Register on Kauai. Not sure what bit 0x4 is ...
225 #define KAUAI_FCR_UATA_MAGIC 0x00000004
226 #define KAUAI_FCR_UATA_RESET_N 0x00000002
227 #define KAUAI_FCR_UATA_ENABLE 0x00000001
229 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
231 /* Rounded Multiword DMA timings
233 * I gave up finding a generic formula for all controller
234 * types and instead, built tables based on timing values
235 * used by Apple in Darwin's implementation.
237 struct mdma_timings_t {
243 struct mdma_timings_t mdma_timings_33[] =
256 struct mdma_timings_t mdma_timings_33k[] =
269 struct mdma_timings_t mdma_timings_66[] =
282 /* KeyLargo ATA-4 Ultra DMA timings (rounded) */
284 int addrSetup; /* ??? */
287 } kl66_udma_timings[] =
289 { 0, 180, 120 }, /* Mode 0 */
290 { 0, 150, 90 }, /* 1 */
291 { 0, 120, 60 }, /* 2 */
292 { 0, 90, 45 }, /* 3 */
293 { 0, 90, 30 } /* 4 */
296 /* UniNorth 2 ATA/100 timings */
297 struct kauai_timing {
302 static struct kauai_timing kauai_pio_timings[] =
304 { 930 , 0x08000fff },
305 { 600 , 0x08000a92 },
306 { 383 , 0x0800060f },
307 { 360 , 0x08000492 },
308 { 330 , 0x0800048f },
309 { 300 , 0x080003cf },
310 { 270 , 0x080003cc },
311 { 240 , 0x0800038b },
312 { 239 , 0x0800030c },
313 { 180 , 0x05000249 },
317 static struct kauai_timing kauai_mdma_timings[] =
319 { 1260 , 0x00fff000 },
320 { 480 , 0x00618000 },
321 { 360 , 0x00492000 },
322 { 270 , 0x0038e000 },
323 { 240 , 0x0030c000 },
324 { 210 , 0x002cb000 },
325 { 180 , 0x00249000 },
326 { 150 , 0x00209000 },
327 { 120 , 0x00148000 },
331 static struct kauai_timing kauai_udma_timings[] =
333 { 120 , 0x000070c0 },
342 static struct kauai_timing shasta_pio_timings[] =
344 { 930 , 0x08000fff },
345 { 600 , 0x0A000c97 },
346 { 383 , 0x07000712 },
347 { 360 , 0x040003cd },
348 { 330 , 0x040003cd },
349 { 300 , 0x040003cd },
350 { 270 , 0x040003cd },
351 { 240 , 0x040003cd },
352 { 239 , 0x040003cd },
353 { 180 , 0x0400028b },
357 static struct kauai_timing shasta_mdma_timings[] =
359 { 1260 , 0x00fff000 },
360 { 480 , 0x00820800 },
361 { 360 , 0x00820800 },
362 { 270 , 0x00820800 },
363 { 240 , 0x00820800 },
364 { 210 , 0x00820800 },
365 { 180 , 0x00820800 },
366 { 150 , 0x0028b000 },
367 { 120 , 0x001ca000 },
371 static struct kauai_timing shasta_udma133_timings[] =
373 { 120 , 0x00035901, },
374 { 90 , 0x000348b1, },
375 { 60 , 0x00033881, },
376 { 45 , 0x00033861, },
377 { 30 , 0x00033841, },
378 { 20 , 0x00033031, },
379 { 15 , 0x00033021, },
385 kauai_lookup_timing(struct kauai_timing* table, int cycle_time)
389 for (i=0; table[i].cycle_time; i++)
390 if (cycle_time > table[i+1].cycle_time)
391 return table[i].timing_reg;
395 /* allow up to 256 DBDMA commands per xfer */
396 #define MAX_DCMDS 256
399 * Wait 1s for disk to answer on IDE bus after a hard reset
400 * of the device (via GPIO/FCR).
402 * Some devices seem to "pollute" the bus even after dropping
403 * the BSY bit (typically some combo drives slave on the UDMA
404 * bus) after a hard reset. Since we hard reset all drives on
405 * KeyLargo ATA66, we have to keep that delay around. I may end
406 * up not hard resetting anymore on these and keep the delay only
407 * for older interfaces instead (we have to reset when coming
408 * from MacOS...) --BenH.
410 #define IDE_WAKEUP_DELAY (1*HZ)
412 static void pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif);
413 static int pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq);
414 static int pmac_ide_tune_chipset(ide_drive_t *drive, u8 speed);
415 static void pmac_ide_tuneproc(ide_drive_t *drive, u8 pio);
416 static void pmac_ide_selectproc(ide_drive_t *drive);
417 static void pmac_ide_kauai_selectproc(ide_drive_t *drive);
419 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
422 * N.B. this can't be an initfunc, because the media-bay task can
423 * call ide_[un]register at any time.
426 pmac_ide_init_hwif_ports(hw_regs_t *hw,
427 unsigned long data_port, unsigned long ctrl_port,
435 for (ix = 0; ix < MAX_HWIFS; ++ix)
436 if (data_port == pmac_ide[ix].regbase)
439 if (ix >= MAX_HWIFS) {
440 /* Probably a PCI interface... */
441 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; ++i)
442 hw->io_ports[i] = data_port + i - IDE_DATA_OFFSET;
443 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
447 for (i = 0; i < 8; ++i)
448 hw->io_ports[i] = data_port + i * 0x10;
449 hw->io_ports[8] = data_port + 0x160;
452 *irq = pmac_ide[ix].irq;
454 hw->dev = &pmac_ide[ix].mdev->ofdev.dev;
457 #define PMAC_IDE_REG(x) ((void __iomem *)(IDE_DATA_REG+(x)))
460 * Apply the timings of the proper unit (master/slave) to the shared
461 * timing register when selecting that unit. This version is for
462 * ASICs with a single timing register
465 pmac_ide_selectproc(ide_drive_t *drive)
467 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
472 if (drive->select.b.unit & 0x01)
473 writel(pmif->timings[1], PMAC_IDE_REG(IDE_TIMING_CONFIG));
475 writel(pmif->timings[0], PMAC_IDE_REG(IDE_TIMING_CONFIG));
476 (void)readl(PMAC_IDE_REG(IDE_TIMING_CONFIG));
480 * Apply the timings of the proper unit (master/slave) to the shared
481 * timing register when selecting that unit. This version is for
482 * ASICs with a dual timing register (Kauai)
485 pmac_ide_kauai_selectproc(ide_drive_t *drive)
487 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
492 if (drive->select.b.unit & 0x01) {
493 writel(pmif->timings[1], PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG));
494 writel(pmif->timings[3], PMAC_IDE_REG(IDE_KAUAI_ULTRA_CONFIG));
496 writel(pmif->timings[0], PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG));
497 writel(pmif->timings[2], PMAC_IDE_REG(IDE_KAUAI_ULTRA_CONFIG));
499 (void)readl(PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG));
503 * Force an update of controller timing values for a given drive
506 pmac_ide_do_update_timings(ide_drive_t *drive)
508 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
513 if (pmif->kind == controller_sh_ata6 ||
514 pmif->kind == controller_un_ata6 ||
515 pmif->kind == controller_k2_ata6)
516 pmac_ide_kauai_selectproc(drive);
518 pmac_ide_selectproc(drive);
522 pmac_outbsync(ide_drive_t *drive, u8 value, unsigned long port)
526 writeb(value, (void __iomem *) port);
527 tmp = readl(PMAC_IDE_REG(IDE_TIMING_CONFIG));
531 * Send the SET_FEATURE IDE command to the drive and update drive->id with
532 * the new state. We currently don't use the generic routine as it used to
533 * cause various trouble, especially with older mediabays.
534 * This code is sometimes triggering a spurrious interrupt though, I need
535 * to sort that out sooner or later and see if I can finally get the
536 * common version to work properly in all cases
539 pmac_ide_do_setfeature(ide_drive_t *drive, u8 command)
541 ide_hwif_t *hwif = HWIF(drive);
544 disable_irq_nosync(hwif->irq);
547 SELECT_MASK(drive, 0);
549 /* Get rid of pending error state */
550 (void) hwif->INB(IDE_STATUS_REG);
551 /* Timeout bumped for some powerbooks */
552 if (wait_for_ready(drive, 2000)) {
553 /* Timeout bumped for some powerbooks */
554 printk(KERN_ERR "%s: pmac_ide_do_setfeature disk not ready "
555 "before SET_FEATURE!\n", drive->name);
559 hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
560 hwif->OUTB(command, IDE_NSECTOR_REG);
561 hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
562 hwif->OUTBSYNC(drive, WIN_SETFEATURES, IDE_COMMAND_REG);
564 /* Timeout bumped for some powerbooks */
565 result = wait_for_ready(drive, 2000);
566 hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
568 printk(KERN_ERR "%s: pmac_ide_do_setfeature disk not ready "
569 "after SET_FEATURE !\n", drive->name);
571 SELECT_MASK(drive, 0);
573 drive->id->dma_ultra &= ~0xFF00;
574 drive->id->dma_mword &= ~0x0F00;
575 drive->id->dma_1word &= ~0x0F00;
578 drive->id->dma_ultra |= 0x8080; break;
580 drive->id->dma_ultra |= 0x4040; break;
582 drive->id->dma_ultra |= 0x2020; break;
584 drive->id->dma_ultra |= 0x1010; break;
586 drive->id->dma_ultra |= 0x0808; break;
588 drive->id->dma_ultra |= 0x0404; break;
590 drive->id->dma_ultra |= 0x0202; break;
592 drive->id->dma_ultra |= 0x0101; break;
594 drive->id->dma_mword |= 0x0404; break;
596 drive->id->dma_mword |= 0x0202; break;
598 drive->id->dma_mword |= 0x0101; break;
600 drive->id->dma_1word |= 0x0404; break;
602 drive->id->dma_1word |= 0x0202; break;
604 drive->id->dma_1word |= 0x0101; break;
608 enable_irq(hwif->irq);
613 * Old tuning functions (called on hdparm -p), sets up drive PIO timings
616 pmac_ide_tuneproc(ide_drive_t *drive, u8 pio)
620 unsigned accessTicks, recTicks;
621 unsigned accessTime, recTime;
622 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
627 /* which drive is it ? */
628 timings = &pmif->timings[drive->select.b.unit & 0x01];
630 pio = ide_get_best_pio_mode(drive, pio, 4, &d);
632 switch (pmif->kind) {
633 case controller_sh_ata6: {
635 u32 tr = kauai_lookup_timing(shasta_pio_timings, d.cycle_time);
638 *timings = ((*timings) & ~TR_133_PIOREG_PIO_MASK) | tr;
641 case controller_un_ata6:
642 case controller_k2_ata6: {
644 u32 tr = kauai_lookup_timing(kauai_pio_timings, d.cycle_time);
647 *timings = ((*timings) & ~TR_100_PIOREG_PIO_MASK) | tr;
650 case controller_kl_ata4:
652 recTime = d.cycle_time - ide_pio_timings[pio].active_time
653 - ide_pio_timings[pio].setup_time;
654 recTime = max(recTime, 150U);
655 accessTime = ide_pio_timings[pio].active_time;
656 accessTime = max(accessTime, 150U);
657 accessTicks = SYSCLK_TICKS_66(accessTime);
658 accessTicks = min(accessTicks, 0x1fU);
659 recTicks = SYSCLK_TICKS_66(recTime);
660 recTicks = min(recTicks, 0x1fU);
661 *timings = ((*timings) & ~TR_66_PIO_MASK) |
662 (accessTicks << TR_66_PIO_ACCESS_SHIFT) |
663 (recTicks << TR_66_PIO_RECOVERY_SHIFT);
668 recTime = d.cycle_time - ide_pio_timings[pio].active_time
669 - ide_pio_timings[pio].setup_time;
670 recTime = max(recTime, 150U);
671 accessTime = ide_pio_timings[pio].active_time;
672 accessTime = max(accessTime, 150U);
673 accessTicks = SYSCLK_TICKS(accessTime);
674 accessTicks = min(accessTicks, 0x1fU);
675 accessTicks = max(accessTicks, 4U);
676 recTicks = SYSCLK_TICKS(recTime);
677 recTicks = min(recTicks, 0x1fU);
678 recTicks = max(recTicks, 5U) - 4;
680 recTicks--; /* guess, but it's only for PIO0, so... */
683 *timings = ((*timings) & ~TR_33_PIO_MASK) |
684 (accessTicks << TR_33_PIO_ACCESS_SHIFT) |
685 (recTicks << TR_33_PIO_RECOVERY_SHIFT);
687 *timings |= TR_33_PIO_E;
692 #ifdef IDE_PMAC_DEBUG
693 printk(KERN_ERR "%s: Set PIO timing for mode %d, reg: 0x%08x\n",
694 drive->name, pio, *timings);
697 if (drive->select.all == HWIF(drive)->INB(IDE_SELECT_REG))
698 pmac_ide_do_update_timings(drive);
701 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
704 * Calculate KeyLargo ATA/66 UDMA timings
707 set_timings_udma_ata4(u32 *timings, u8 speed)
709 unsigned rdyToPauseTicks, wrDataSetupTicks, addrTicks;
711 if (speed > XFER_UDMA_4)
714 rdyToPauseTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].rdy2pause);
715 wrDataSetupTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].wrDataSetup);
716 addrTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].addrSetup);
718 *timings = ((*timings) & ~(TR_66_UDMA_MASK | TR_66_MDMA_MASK)) |
719 (wrDataSetupTicks << TR_66_UDMA_WRDATASETUP_SHIFT) |
720 (rdyToPauseTicks << TR_66_UDMA_RDY2PAUS_SHIFT) |
721 (addrTicks <<TR_66_UDMA_ADDRSETUP_SHIFT) |
723 #ifdef IDE_PMAC_DEBUG
724 printk(KERN_ERR "ide_pmac: Set UDMA timing for mode %d, reg: 0x%08x\n",
725 speed & 0xf, *timings);
732 * Calculate Kauai ATA/100 UDMA timings
735 set_timings_udma_ata6(u32 *pio_timings, u32 *ultra_timings, u8 speed)
737 struct ide_timing *t = ide_timing_find_mode(speed);
740 if (speed > XFER_UDMA_5 || t == NULL)
742 tr = kauai_lookup_timing(kauai_udma_timings, (int)t->udma);
745 *ultra_timings = ((*ultra_timings) & ~TR_100_UDMAREG_UDMA_MASK) | tr;
746 *ultra_timings = (*ultra_timings) | TR_100_UDMAREG_UDMA_EN;
752 * Calculate Shasta ATA/133 UDMA timings
755 set_timings_udma_shasta(u32 *pio_timings, u32 *ultra_timings, u8 speed)
757 struct ide_timing *t = ide_timing_find_mode(speed);
760 if (speed > XFER_UDMA_6 || t == NULL)
762 tr = kauai_lookup_timing(shasta_udma133_timings, (int)t->udma);
765 *ultra_timings = ((*ultra_timings) & ~TR_133_UDMAREG_UDMA_MASK) | tr;
766 *ultra_timings = (*ultra_timings) | TR_133_UDMAREG_UDMA_EN;
772 * Calculate MDMA timings for all cells
775 set_timings_mdma(ide_drive_t *drive, int intf_type, u32 *timings, u32 *timings2,
776 u8 speed, int drive_cycle_time)
778 int cycleTime, accessTime = 0, recTime = 0;
779 unsigned accessTicks, recTicks;
780 struct mdma_timings_t* tm = NULL;
783 /* Get default cycle time for mode */
784 switch(speed & 0xf) {
785 case 0: cycleTime = 480; break;
786 case 1: cycleTime = 150; break;
787 case 2: cycleTime = 120; break;
791 /* Adjust for drive */
792 if (drive_cycle_time && drive_cycle_time > cycleTime)
793 cycleTime = drive_cycle_time;
794 /* OHare limits according to some old Apple sources */
795 if ((intf_type == controller_ohare) && (cycleTime < 150))
797 /* Get the proper timing array for this controller */
799 case controller_sh_ata6:
800 case controller_un_ata6:
801 case controller_k2_ata6:
803 case controller_kl_ata4:
804 tm = mdma_timings_66;
806 case controller_kl_ata3:
807 tm = mdma_timings_33k;
810 tm = mdma_timings_33;
814 /* Lookup matching access & recovery times */
817 if (tm[i+1].cycleTime < cycleTime)
823 cycleTime = tm[i].cycleTime;
824 accessTime = tm[i].accessTime;
825 recTime = tm[i].recoveryTime;
827 #ifdef IDE_PMAC_DEBUG
828 printk(KERN_ERR "%s: MDMA, cycleTime: %d, accessTime: %d, recTime: %d\n",
829 drive->name, cycleTime, accessTime, recTime);
833 case controller_sh_ata6: {
835 u32 tr = kauai_lookup_timing(shasta_mdma_timings, cycleTime);
838 *timings = ((*timings) & ~TR_133_PIOREG_MDMA_MASK) | tr;
839 *timings2 = (*timings2) & ~TR_133_UDMAREG_UDMA_EN;
841 case controller_un_ata6:
842 case controller_k2_ata6: {
844 u32 tr = kauai_lookup_timing(kauai_mdma_timings, cycleTime);
847 *timings = ((*timings) & ~TR_100_PIOREG_MDMA_MASK) | tr;
848 *timings2 = (*timings2) & ~TR_100_UDMAREG_UDMA_EN;
851 case controller_kl_ata4:
853 accessTicks = SYSCLK_TICKS_66(accessTime);
854 accessTicks = min(accessTicks, 0x1fU);
855 accessTicks = max(accessTicks, 0x1U);
856 recTicks = SYSCLK_TICKS_66(recTime);
857 recTicks = min(recTicks, 0x1fU);
858 recTicks = max(recTicks, 0x3U);
859 /* Clear out mdma bits and disable udma */
860 *timings = ((*timings) & ~(TR_66_MDMA_MASK | TR_66_UDMA_MASK)) |
861 (accessTicks << TR_66_MDMA_ACCESS_SHIFT) |
862 (recTicks << TR_66_MDMA_RECOVERY_SHIFT);
864 case controller_kl_ata3:
865 /* 33Mhz cell on KeyLargo */
866 accessTicks = SYSCLK_TICKS(accessTime);
867 accessTicks = max(accessTicks, 1U);
868 accessTicks = min(accessTicks, 0x1fU);
869 accessTime = accessTicks * IDE_SYSCLK_NS;
870 recTicks = SYSCLK_TICKS(recTime);
871 recTicks = max(recTicks, 1U);
872 recTicks = min(recTicks, 0x1fU);
873 *timings = ((*timings) & ~TR_33_MDMA_MASK) |
874 (accessTicks << TR_33_MDMA_ACCESS_SHIFT) |
875 (recTicks << TR_33_MDMA_RECOVERY_SHIFT);
878 /* 33Mhz cell on others */
880 int origAccessTime = accessTime;
881 int origRecTime = recTime;
883 accessTicks = SYSCLK_TICKS(accessTime);
884 accessTicks = max(accessTicks, 1U);
885 accessTicks = min(accessTicks, 0x1fU);
886 accessTime = accessTicks * IDE_SYSCLK_NS;
887 recTicks = SYSCLK_TICKS(recTime);
888 recTicks = max(recTicks, 2U) - 1;
889 recTicks = min(recTicks, 0x1fU);
890 recTime = (recTicks + 1) * IDE_SYSCLK_NS;
891 if ((accessTicks > 1) &&
892 ((accessTime - IDE_SYSCLK_NS/2) >= origAccessTime) &&
893 ((recTime - IDE_SYSCLK_NS/2) >= origRecTime)) {
897 *timings = ((*timings) & ~TR_33_MDMA_MASK) |
898 (accessTicks << TR_33_MDMA_ACCESS_SHIFT) |
899 (recTicks << TR_33_MDMA_RECOVERY_SHIFT);
901 *timings |= TR_33_MDMA_HALFTICK;
904 #ifdef IDE_PMAC_DEBUG
905 printk(KERN_ERR "%s: Set MDMA timing for mode %d, reg: 0x%08x\n",
906 drive->name, speed & 0xf, *timings);
910 #endif /* #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC */
913 * Speedproc. This function is called by the core to set any of the standard
914 * timing (PIO, MDMA or UDMA) to both the drive and the controller.
915 * You may notice we don't use this function on normal "dma check" operation,
916 * our dedicated function is more precise as it uses the drive provided
917 * cycle time value. We should probably fix this one to deal with that too...
920 pmac_ide_tune_chipset (ide_drive_t *drive, byte speed)
922 int unit = (drive->select.b.unit & 0x01);
924 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
925 u32 *timings, *timings2;
930 timings = &pmif->timings[unit];
931 timings2 = &pmif->timings[unit+2];
934 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
936 if (pmif->kind != controller_sh_ata6)
939 if (pmif->kind != controller_un_ata6 &&
940 pmif->kind != controller_k2_ata6 &&
941 pmif->kind != controller_sh_ata6)
945 if (HWIF(drive)->udma_four == 0)
950 if (pmif->kind == controller_kl_ata4)
951 ret = set_timings_udma_ata4(timings, speed);
952 else if (pmif->kind == controller_un_ata6
953 || pmif->kind == controller_k2_ata6)
954 ret = set_timings_udma_ata6(timings, timings2, speed);
955 else if (pmif->kind == controller_sh_ata6)
956 ret = set_timings_udma_shasta(timings, timings2, speed);
963 ret = set_timings_mdma(drive, pmif->kind, timings, timings2, speed, 0);
969 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
975 pmac_ide_tuneproc(drive, speed & 0x07);
983 ret = pmac_ide_do_setfeature(drive, speed);
987 pmac_ide_do_update_timings(drive);
988 drive->current_speed = speed;
994 * Blast some well known "safe" values to the timing registers at init or
995 * wakeup from sleep time, before we do real calculation
998 sanitize_timings(pmac_ide_hwif_t *pmif)
1000 unsigned int value, value2 = 0;
1002 switch(pmif->kind) {
1003 case controller_sh_ata6:
1005 value2 = 0x00033031;
1007 case controller_un_ata6:
1008 case controller_k2_ata6:
1010 value2 = 0x00002921;
1012 case controller_kl_ata4:
1015 case controller_kl_ata3:
1018 case controller_heathrow:
1019 case controller_ohare:
1024 pmif->timings[0] = pmif->timings[1] = value;
1025 pmif->timings[2] = pmif->timings[3] = value2;
1029 pmac_ide_get_base(int index)
1031 return pmac_ide[index].regbase;
1035 pmac_ide_check_base(unsigned long base)
1039 for (ix = 0; ix < MAX_HWIFS; ++ix)
1040 if (base == pmac_ide[ix].regbase)
1046 pmac_ide_get_irq(unsigned long base)
1050 for (ix = 0; ix < MAX_HWIFS; ++ix)
1051 if (base == pmac_ide[ix].regbase)
1052 return pmac_ide[ix].irq;
1056 static int ide_majors[] = { 3, 22, 33, 34, 56, 57 };
1059 pmac_find_ide_boot(char *bootdevice, int n)
1064 * Look through the list of IDE interfaces for this one.
1066 for (i = 0; i < pmac_ide_count; ++i) {
1068 if (!pmac_ide[i].node || !pmac_ide[i].node->full_name)
1070 name = pmac_ide[i].node->full_name;
1071 if (memcmp(name, bootdevice, n) == 0 && name[n] == 0) {
1072 /* XXX should cope with the 2nd drive as well... */
1073 return MKDEV(ide_majors[i], 0);
1080 /* Suspend call back, should be called after the child devices
1081 * have actually been suspended
1084 pmac_ide_do_suspend(ide_hwif_t *hwif)
1086 pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1088 /* We clear the timings */
1089 pmif->timings[0] = 0;
1090 pmif->timings[1] = 0;
1092 disable_irq(pmif->irq);
1094 /* The media bay will handle itself just fine */
1098 /* Kauai has bus control FCRs directly here */
1099 if (pmif->kauai_fcr) {
1100 u32 fcr = readl(pmif->kauai_fcr);
1101 fcr &= ~(KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE);
1102 writel(fcr, pmif->kauai_fcr);
1105 /* Disable the bus on older machines and the cell on kauai */
1106 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, pmif->node, pmif->aapl_bus_id,
1112 /* Resume call back, should be called before the child devices
1116 pmac_ide_do_resume(ide_hwif_t *hwif)
1118 pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1120 /* Hard reset & re-enable controller (do we really need to reset ? -BenH) */
1121 if (!pmif->mediabay) {
1122 ppc_md.feature_call(PMAC_FTR_IDE_RESET, pmif->node, pmif->aapl_bus_id, 1);
1123 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, pmif->node, pmif->aapl_bus_id, 1);
1125 ppc_md.feature_call(PMAC_FTR_IDE_RESET, pmif->node, pmif->aapl_bus_id, 0);
1127 /* Kauai has it different */
1128 if (pmif->kauai_fcr) {
1129 u32 fcr = readl(pmif->kauai_fcr);
1130 fcr |= KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE;
1131 writel(fcr, pmif->kauai_fcr);
1134 msleep(jiffies_to_msecs(IDE_WAKEUP_DELAY));
1137 /* Sanitize drive timings */
1138 sanitize_timings(pmif);
1140 enable_irq(pmif->irq);
1146 * Setup, register & probe an IDE channel driven by this driver, this is
1147 * called by one of the 2 probe functions (macio or PCI). Note that a channel
1148 * that ends up beeing free of any device is not kept around by this driver
1149 * (it is kept in 2.4). This introduce an interface numbering change on some
1150 * rare machines unfortunately, but it's better this way.
1153 pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
1155 struct device_node *np = pmif->node;
1159 pmif->broken_dma = pmif->broken_dma_warn = 0;
1160 if (device_is_compatible(np, "shasta-ata"))
1161 pmif->kind = controller_sh_ata6;
1162 else if (device_is_compatible(np, "kauai-ata"))
1163 pmif->kind = controller_un_ata6;
1164 else if (device_is_compatible(np, "K2-UATA"))
1165 pmif->kind = controller_k2_ata6;
1166 else if (device_is_compatible(np, "keylargo-ata")) {
1167 if (strcmp(np->name, "ata-4") == 0)
1168 pmif->kind = controller_kl_ata4;
1170 pmif->kind = controller_kl_ata3;
1171 } else if (device_is_compatible(np, "heathrow-ata"))
1172 pmif->kind = controller_heathrow;
1174 pmif->kind = controller_ohare;
1175 pmif->broken_dma = 1;
1178 bidp = get_property(np, "AAPL,bus-id", NULL);
1179 pmif->aapl_bus_id = bidp ? *bidp : 0;
1181 /* Get cable type from device-tree */
1182 if (pmif->kind == controller_kl_ata4 || pmif->kind == controller_un_ata6
1183 || pmif->kind == controller_k2_ata6
1184 || pmif->kind == controller_sh_ata6) {
1185 const char* cable = get_property(np, "cable-type", NULL);
1186 if (cable && !strncmp(cable, "80-", 3))
1189 /* G5's seem to have incorrect cable type in device-tree. Let's assume
1190 * they have a 80 conductor cable, this seem to be always the case unless
1191 * the user mucked around
1193 if (device_is_compatible(np, "K2-UATA") ||
1194 device_is_compatible(np, "shasta-ata"))
1197 /* On Kauai-type controllers, we make sure the FCR is correct */
1198 if (pmif->kauai_fcr)
1199 writel(KAUAI_FCR_UATA_MAGIC |
1200 KAUAI_FCR_UATA_RESET_N |
1201 KAUAI_FCR_UATA_ENABLE, pmif->kauai_fcr);
1205 /* Make sure we have sane timings */
1206 sanitize_timings(pmif);
1208 #ifndef CONFIG_PPC64
1209 /* XXX FIXME: Media bay stuff need re-organizing */
1210 if (np->parent && np->parent->name
1211 && strcasecmp(np->parent->name, "media-bay") == 0) {
1212 #ifdef CONFIG_PMAC_MEDIABAY
1213 media_bay_set_ide_infos(np->parent, pmif->regbase, pmif->irq, hwif->index);
1214 #endif /* CONFIG_PMAC_MEDIABAY */
1217 pmif->aapl_bus_id = 1;
1218 } else if (pmif->kind == controller_ohare) {
1219 /* The code below is having trouble on some ohare machines
1220 * (timing related ?). Until I can put my hand on one of these
1221 * units, I keep the old way
1223 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, np, 0, 1);
1227 /* This is necessary to enable IDE when net-booting */
1228 ppc_md.feature_call(PMAC_FTR_IDE_RESET, np, pmif->aapl_bus_id, 1);
1229 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, np, pmif->aapl_bus_id, 1);
1231 ppc_md.feature_call(PMAC_FTR_IDE_RESET, np, pmif->aapl_bus_id, 0);
1232 msleep(jiffies_to_msecs(IDE_WAKEUP_DELAY));
1235 /* Setup MMIO ops */
1236 default_hwif_mmiops(hwif);
1237 hwif->OUTBSYNC = pmac_outbsync;
1239 /* Tell common code _not_ to mess with resources */
1241 hwif->hwif_data = pmif;
1242 pmac_ide_init_hwif_ports(&hwif->hw, pmif->regbase, 0, &hwif->irq);
1243 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1244 hwif->chipset = ide_pmac;
1245 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET] || pmif->mediabay;
1246 hwif->hold = pmif->mediabay;
1247 hwif->udma_four = pmif->cable_80;
1248 hwif->drives[0].unmask = 1;
1249 hwif->drives[1].unmask = 1;
1250 hwif->tuneproc = pmac_ide_tuneproc;
1251 if (pmif->kind == controller_un_ata6
1252 || pmif->kind == controller_k2_ata6
1253 || pmif->kind == controller_sh_ata6)
1254 hwif->selectproc = pmac_ide_kauai_selectproc;
1256 hwif->selectproc = pmac_ide_selectproc;
1257 hwif->speedproc = pmac_ide_tune_chipset;
1259 printk(KERN_INFO "ide%d: Found Apple %s controller, bus ID %d%s, irq %d\n",
1260 hwif->index, model_name[pmif->kind], pmif->aapl_bus_id,
1261 pmif->mediabay ? " (mediabay)" : "", hwif->irq);
1263 #ifdef CONFIG_PMAC_MEDIABAY
1264 if (pmif->mediabay && check_media_bay_by_base(pmif->regbase, MB_CD) == 0)
1266 #endif /* CONFIG_PMAC_MEDIABAY */
1268 hwif->sg_max_nents = MAX_DCMDS;
1270 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1271 /* has a DBDMA controller channel */
1273 pmac_ide_setup_dma(pmif, hwif);
1274 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
1276 /* We probe the hwif now */
1277 probe_hwif_init(hwif);
1283 * Attach to a macio probed interface
1285 static int __devinit
1286 pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
1289 unsigned long regbase;
1292 pmac_ide_hwif_t *pmif;
1296 while (i < MAX_HWIFS && (ide_hwifs[i].io_ports[IDE_DATA_OFFSET] != 0
1297 || pmac_ide[i].node != NULL))
1299 if (i >= MAX_HWIFS) {
1300 printk(KERN_ERR "ide-pmac: MacIO interface attach with no slot\n");
1301 printk(KERN_ERR " %s\n", mdev->ofdev.node->full_name);
1305 pmif = &pmac_ide[i];
1306 hwif = &ide_hwifs[i];
1308 if (macio_resource_count(mdev) == 0) {
1309 printk(KERN_WARNING "ide%d: no address for %s\n",
1310 i, mdev->ofdev.node->full_name);
1314 /* Request memory resource for IO ports */
1315 if (macio_request_resource(mdev, 0, "ide-pmac (ports)")) {
1316 printk(KERN_ERR "ide%d: can't request mmio resource !\n", i);
1320 /* XXX This is bogus. Should be fixed in the registry by checking
1321 * the kind of host interrupt controller, a bit like gatwick
1322 * fixes in irq.c. That works well enough for the single case
1323 * where that happens though...
1325 if (macio_irq_count(mdev) == 0) {
1326 printk(KERN_WARNING "ide%d: no intrs for device %s, using 13\n",
1327 i, mdev->ofdev.node->full_name);
1328 irq = irq_create_mapping(NULL, 13);
1330 irq = macio_irq(mdev, 0);
1332 base = ioremap(macio_resource_start(mdev, 0), 0x400);
1333 regbase = (unsigned long) base;
1335 hwif->pci_dev = mdev->bus->pdev;
1336 hwif->gendev.parent = &mdev->ofdev.dev;
1339 pmif->node = mdev->ofdev.node;
1340 pmif->regbase = regbase;
1342 pmif->kauai_fcr = NULL;
1343 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1344 if (macio_resource_count(mdev) >= 2) {
1345 if (macio_request_resource(mdev, 1, "ide-pmac (dma)"))
1346 printk(KERN_WARNING "ide%d: can't request DMA resource !\n", i);
1348 pmif->dma_regs = ioremap(macio_resource_start(mdev, 1), 0x1000);
1350 pmif->dma_regs = NULL;
1351 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
1352 dev_set_drvdata(&mdev->ofdev.dev, hwif);
1354 rc = pmac_ide_setup_device(pmif, hwif);
1356 /* The inteface is released to the common IDE layer */
1357 dev_set_drvdata(&mdev->ofdev.dev, NULL);
1360 iounmap(pmif->dma_regs);
1361 memset(pmif, 0, sizeof(*pmif));
1362 macio_release_resource(mdev, 0);
1364 macio_release_resource(mdev, 1);
1371 pmac_ide_macio_suspend(struct macio_dev *mdev, pm_message_t mesg)
1373 ide_hwif_t *hwif = (ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev);
1376 if (mesg.event != mdev->ofdev.dev.power.power_state.event
1377 && mesg.event == PM_EVENT_SUSPEND) {
1378 rc = pmac_ide_do_suspend(hwif);
1380 mdev->ofdev.dev.power.power_state = mesg;
1387 pmac_ide_macio_resume(struct macio_dev *mdev)
1389 ide_hwif_t *hwif = (ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev);
1392 if (mdev->ofdev.dev.power.power_state.event != PM_EVENT_ON) {
1393 rc = pmac_ide_do_resume(hwif);
1395 mdev->ofdev.dev.power.power_state = PMSG_ON;
1402 * Attach to a PCI probed interface
1404 static int __devinit
1405 pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
1408 struct device_node *np;
1409 pmac_ide_hwif_t *pmif;
1411 unsigned long rbase, rlen;
1414 np = pci_device_to_OF_node(pdev);
1416 printk(KERN_ERR "ide-pmac: cannot find MacIO node for Kauai ATA interface\n");
1420 while (i < MAX_HWIFS && (ide_hwifs[i].io_ports[IDE_DATA_OFFSET] != 0
1421 || pmac_ide[i].node != NULL))
1423 if (i >= MAX_HWIFS) {
1424 printk(KERN_ERR "ide-pmac: PCI interface attach with no slot\n");
1425 printk(KERN_ERR " %s\n", np->full_name);
1429 pmif = &pmac_ide[i];
1430 hwif = &ide_hwifs[i];
1432 if (pci_enable_device(pdev)) {
1433 printk(KERN_WARNING "ide%i: Can't enable PCI device for %s\n",
1437 pci_set_master(pdev);
1439 if (pci_request_regions(pdev, "Kauai ATA")) {
1440 printk(KERN_ERR "ide%d: Cannot obtain PCI resources for %s\n",
1445 hwif->pci_dev = pdev;
1446 hwif->gendev.parent = &pdev->dev;
1450 rbase = pci_resource_start(pdev, 0);
1451 rlen = pci_resource_len(pdev, 0);
1453 base = ioremap(rbase, rlen);
1454 pmif->regbase = (unsigned long) base + 0x2000;
1455 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1456 pmif->dma_regs = base + 0x1000;
1457 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
1458 pmif->kauai_fcr = base;
1459 pmif->irq = pdev->irq;
1461 pci_set_drvdata(pdev, hwif);
1463 rc = pmac_ide_setup_device(pmif, hwif);
1465 /* The inteface is released to the common IDE layer */
1466 pci_set_drvdata(pdev, NULL);
1468 memset(pmif, 0, sizeof(*pmif));
1469 pci_release_regions(pdev);
1476 pmac_ide_pci_suspend(struct pci_dev *pdev, pm_message_t mesg)
1478 ide_hwif_t *hwif = (ide_hwif_t *)pci_get_drvdata(pdev);
1481 if (mesg.event != pdev->dev.power.power_state.event
1482 && mesg.event == PM_EVENT_SUSPEND) {
1483 rc = pmac_ide_do_suspend(hwif);
1485 pdev->dev.power.power_state = mesg;
1492 pmac_ide_pci_resume(struct pci_dev *pdev)
1494 ide_hwif_t *hwif = (ide_hwif_t *)pci_get_drvdata(pdev);
1497 if (pdev->dev.power.power_state.event != PM_EVENT_ON) {
1498 rc = pmac_ide_do_resume(hwif);
1500 pdev->dev.power.power_state = PMSG_ON;
1506 static struct of_device_id pmac_ide_macio_match[] =
1523 static struct macio_driver pmac_ide_macio_driver =
1526 .match_table = pmac_ide_macio_match,
1527 .probe = pmac_ide_macio_attach,
1528 .suspend = pmac_ide_macio_suspend,
1529 .resume = pmac_ide_macio_resume,
1532 static struct pci_device_id pmac_ide_pci_match[] = {
1533 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_ATA,
1534 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1535 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_IPID_ATA100,
1536 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1537 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_K2_ATA100,
1538 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1539 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_SH_ATA,
1540 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1541 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_IPID2_ATA,
1542 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1545 static struct pci_driver pmac_ide_pci_driver = {
1547 .id_table = pmac_ide_pci_match,
1548 .probe = pmac_ide_pci_attach,
1549 .suspend = pmac_ide_pci_suspend,
1550 .resume = pmac_ide_pci_resume,
1552 MODULE_DEVICE_TABLE(pci, pmac_ide_pci_match);
1555 pmac_ide_probe(void)
1557 if (!machine_is(powermac))
1560 #ifdef CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST
1561 pci_register_driver(&pmac_ide_pci_driver);
1562 macio_register_driver(&pmac_ide_macio_driver);
1564 macio_register_driver(&pmac_ide_macio_driver);
1565 pci_register_driver(&pmac_ide_pci_driver);
1569 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1572 * pmac_ide_build_dmatable builds the DBDMA command list
1573 * for a transfer and sets the DBDMA channel to point to it.
1576 pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq)
1578 struct dbdma_cmd *table;
1580 ide_hwif_t *hwif = HWIF(drive);
1581 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1582 volatile struct dbdma_regs __iomem *dma = pmif->dma_regs;
1583 struct scatterlist *sg;
1584 int wr = (rq_data_dir(rq) == WRITE);
1586 /* DMA table is already aligned */
1587 table = (struct dbdma_cmd *) pmif->dma_table_cpu;
1589 /* Make sure DMA controller is stopped (necessary ?) */
1590 writel((RUN|PAUSE|FLUSH|WAKE|DEAD) << 16, &dma->control);
1591 while (readl(&dma->status) & RUN)
1594 hwif->sg_nents = i = ide_build_sglist(drive, rq);
1599 /* Build DBDMA commands list */
1600 sg = hwif->sg_table;
1601 while (i && sg_dma_len(sg)) {
1605 cur_addr = sg_dma_address(sg);
1606 cur_len = sg_dma_len(sg);
1608 if (pmif->broken_dma && cur_addr & (L1_CACHE_BYTES - 1)) {
1609 if (pmif->broken_dma_warn == 0) {
1610 printk(KERN_WARNING "%s: DMA on non aligned address,"
1611 "switching to PIO on Ohare chipset\n", drive->name);
1612 pmif->broken_dma_warn = 1;
1614 goto use_pio_instead;
1617 unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
1619 if (count++ >= MAX_DCMDS) {
1620 printk(KERN_WARNING "%s: DMA table too small\n",
1622 goto use_pio_instead;
1624 st_le16(&table->command, wr? OUTPUT_MORE: INPUT_MORE);
1625 st_le16(&table->req_count, tc);
1626 st_le32(&table->phy_addr, cur_addr);
1628 table->xfer_status = 0;
1629 table->res_count = 0;
1638 /* convert the last command to an input/output last command */
1640 st_le16(&table[-1].command, wr? OUTPUT_LAST: INPUT_LAST);
1641 /* add the stop command to the end of the list */
1642 memset(table, 0, sizeof(struct dbdma_cmd));
1643 st_le16(&table->command, DBDMA_STOP);
1645 writel(hwif->dmatable_dma, &dma->cmdptr);
1649 printk(KERN_DEBUG "%s: empty DMA table?\n", drive->name);
1651 pci_unmap_sg(hwif->pci_dev,
1654 hwif->sg_dma_direction);
1655 return 0; /* revert to PIO for this request */
1658 /* Teardown mappings after DMA has completed. */
1660 pmac_ide_destroy_dmatable (ide_drive_t *drive)
1662 ide_hwif_t *hwif = drive->hwif;
1663 struct pci_dev *dev = HWIF(drive)->pci_dev;
1664 struct scatterlist *sg = hwif->sg_table;
1665 int nents = hwif->sg_nents;
1668 pci_unmap_sg(dev, sg, nents, hwif->sg_dma_direction);
1674 * Pick up best MDMA timing for the drive and apply it
1677 pmac_ide_mdma_enable(ide_drive_t *drive, u16 mode)
1679 ide_hwif_t *hwif = HWIF(drive);
1680 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1681 int drive_cycle_time;
1682 struct hd_driveid *id = drive->id;
1683 u32 *timings, *timings2;
1684 u32 timing_local[2];
1687 /* which drive is it ? */
1688 timings = &pmif->timings[drive->select.b.unit & 0x01];
1689 timings2 = &pmif->timings[(drive->select.b.unit & 0x01) + 2];
1691 /* Check if drive provide explicit cycle time */
1692 if ((id->field_valid & 2) && (id->eide_dma_time))
1693 drive_cycle_time = id->eide_dma_time;
1695 drive_cycle_time = 0;
1697 /* Copy timings to local image */
1698 timing_local[0] = *timings;
1699 timing_local[1] = *timings2;
1701 /* Calculate controller timings */
1702 ret = set_timings_mdma( drive, pmif->kind,
1710 /* Set feature on drive */
1711 printk(KERN_INFO "%s: Enabling MultiWord DMA %d\n", drive->name, mode & 0xf);
1712 ret = pmac_ide_do_setfeature(drive, mode);
1714 printk(KERN_WARNING "%s: Failed !\n", drive->name);
1718 /* Apply timings to controller */
1719 *timings = timing_local[0];
1720 *timings2 = timing_local[1];
1722 /* Set speed info in drive */
1723 drive->current_speed = mode;
1724 if (!drive->init_speed)
1725 drive->init_speed = mode;
1731 * Pick up best UDMA timing for the drive and apply it
1734 pmac_ide_udma_enable(ide_drive_t *drive, u16 mode)
1736 ide_hwif_t *hwif = HWIF(drive);
1737 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1738 u32 *timings, *timings2;
1739 u32 timing_local[2];
1742 /* which drive is it ? */
1743 timings = &pmif->timings[drive->select.b.unit & 0x01];
1744 timings2 = &pmif->timings[(drive->select.b.unit & 0x01) + 2];
1746 /* Copy timings to local image */
1747 timing_local[0] = *timings;
1748 timing_local[1] = *timings2;
1750 /* Calculate timings for interface */
1751 if (pmif->kind == controller_un_ata6
1752 || pmif->kind == controller_k2_ata6)
1753 ret = set_timings_udma_ata6( &timing_local[0],
1756 else if (pmif->kind == controller_sh_ata6)
1757 ret = set_timings_udma_shasta( &timing_local[0],
1761 ret = set_timings_udma_ata4(&timing_local[0], mode);
1765 /* Set feature on drive */
1766 printk(KERN_INFO "%s: Enabling Ultra DMA %d\n", drive->name, mode & 0x0f);
1767 ret = pmac_ide_do_setfeature(drive, mode);
1769 printk(KERN_WARNING "%s: Failed !\n", drive->name);
1773 /* Apply timings to controller */
1774 *timings = timing_local[0];
1775 *timings2 = timing_local[1];
1777 /* Set speed info in drive */
1778 drive->current_speed = mode;
1779 if (!drive->init_speed)
1780 drive->init_speed = mode;
1786 * Check what is the best DMA timing setting for the drive and
1787 * call appropriate functions to apply it.
1790 pmac_ide_dma_check(ide_drive_t *drive)
1792 struct hd_driveid *id = drive->id;
1793 ide_hwif_t *hwif = HWIF(drive);
1794 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1797 drive->using_dma = 0;
1799 if (drive->media == ide_floppy)
1801 if (((id->capability & 1) == 0) && !__ide_dma_good_drive(drive))
1803 if (__ide_dma_bad_drive(drive))
1810 if (pmif->kind == controller_kl_ata4
1811 || pmif->kind == controller_un_ata6
1812 || pmif->kind == controller_k2_ata6
1813 || pmif->kind == controller_sh_ata6) {
1815 if (pmif->cable_80) {
1816 map |= XFER_UDMA_66;
1817 if (pmif->kind == controller_un_ata6 ||
1818 pmif->kind == controller_k2_ata6 ||
1819 pmif->kind == controller_sh_ata6)
1820 map |= XFER_UDMA_100;
1821 if (pmif->kind == controller_sh_ata6)
1822 map |= XFER_UDMA_133;
1825 mode = ide_find_best_mode(drive, map);
1826 if (mode & XFER_UDMA)
1827 drive->using_dma = pmac_ide_udma_enable(drive, mode);
1828 else if (mode & XFER_MWDMA)
1829 drive->using_dma = pmac_ide_mdma_enable(drive, mode);
1830 hwif->OUTB(0, IDE_CONTROL_REG);
1831 /* Apply settings to controller */
1832 pmac_ide_do_update_timings(drive);
1838 * Prepare a DMA transfer. We build the DMA table, adjust the timings for
1839 * a read on KeyLargo ATA/66 and mark us as waiting for DMA completion
1842 pmac_ide_dma_setup(ide_drive_t *drive)
1844 ide_hwif_t *hwif = HWIF(drive);
1845 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1846 struct request *rq = HWGROUP(drive)->rq;
1847 u8 unit = (drive->select.b.unit & 0x01);
1852 ata4 = (pmif->kind == controller_kl_ata4);
1854 if (!pmac_ide_build_dmatable(drive, rq)) {
1855 ide_map_sg(drive, rq);
1859 /* Apple adds 60ns to wrDataSetup on reads */
1860 if (ata4 && (pmif->timings[unit] & TR_66_UDMA_EN)) {
1861 writel(pmif->timings[unit] + (!rq_data_dir(rq) ? 0x00800000UL : 0),
1862 PMAC_IDE_REG(IDE_TIMING_CONFIG));
1863 (void)readl(PMAC_IDE_REG(IDE_TIMING_CONFIG));
1866 drive->waiting_for_dma = 1;
1872 pmac_ide_dma_exec_cmd(ide_drive_t *drive, u8 command)
1874 /* issue cmd to drive */
1875 ide_execute_command(drive, command, &ide_dma_intr, 2*WAIT_CMD, NULL);
1879 * Kick the DMA controller into life after the DMA command has been issued
1883 pmac_ide_dma_start(ide_drive_t *drive)
1885 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
1886 volatile struct dbdma_regs __iomem *dma;
1888 dma = pmif->dma_regs;
1890 writel((RUN << 16) | RUN, &dma->control);
1891 /* Make sure it gets to the controller right now */
1892 (void)readl(&dma->control);
1896 * After a DMA transfer, make sure the controller is stopped
1899 pmac_ide_dma_end (ide_drive_t *drive)
1901 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
1902 volatile struct dbdma_regs __iomem *dma;
1907 dma = pmif->dma_regs;
1909 drive->waiting_for_dma = 0;
1910 dstat = readl(&dma->status);
1911 writel(((RUN|WAKE|DEAD) << 16), &dma->control);
1912 pmac_ide_destroy_dmatable(drive);
1913 /* verify good dma status. we don't check for ACTIVE beeing 0. We should...
1914 * in theory, but with ATAPI decices doing buffer underruns, that would
1915 * cause us to disable DMA, which isn't what we want
1917 return (dstat & (RUN|DEAD)) != RUN;
1921 * Check out that the interrupt we got was for us. We can't always know this
1922 * for sure with those Apple interfaces (well, we could on the recent ones but
1923 * that's not implemented yet), on the other hand, we don't have shared interrupts
1924 * so it's not really a problem
1927 pmac_ide_dma_test_irq (ide_drive_t *drive)
1929 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
1930 volatile struct dbdma_regs __iomem *dma;
1931 unsigned long status, timeout;
1935 dma = pmif->dma_regs;
1937 /* We have to things to deal with here:
1939 * - The dbdma won't stop if the command was started
1940 * but completed with an error without transferring all
1941 * datas. This happens when bad blocks are met during
1942 * a multi-block transfer.
1944 * - The dbdma fifo hasn't yet finished flushing to
1945 * to system memory when the disk interrupt occurs.
1949 /* If ACTIVE is cleared, the STOP command have passed and
1950 * transfer is complete.
1952 status = readl(&dma->status);
1953 if (!(status & ACTIVE))
1955 if (!drive->waiting_for_dma)
1956 printk(KERN_WARNING "ide%d, ide_dma_test_irq \
1957 called while not waiting\n", HWIF(drive)->index);
1959 /* If dbdma didn't execute the STOP command yet, the
1960 * active bit is still set. We consider that we aren't
1961 * sharing interrupts (which is hopefully the case with
1962 * those controllers) and so we just try to flush the
1963 * channel for pending data in the fifo
1966 writel((FLUSH << 16) | FLUSH, &dma->control);
1970 status = readl(&dma->status);
1971 if ((status & FLUSH) == 0)
1973 if (++timeout > 100) {
1974 printk(KERN_WARNING "ide%d, ide_dma_test_irq \
1975 timeout flushing channel\n", HWIF(drive)->index);
1982 static void pmac_ide_dma_host_off(ide_drive_t *drive)
1986 static int pmac_ide_dma_host_on(ide_drive_t *drive)
1991 pmac_ide_dma_lostirq (ide_drive_t *drive)
1993 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
1994 volatile struct dbdma_regs __iomem *dma;
1995 unsigned long status;
1999 dma = pmif->dma_regs;
2001 status = readl(&dma->status);
2002 printk(KERN_ERR "ide-pmac lost interrupt, dma status: %lx\n", status);
2007 * Allocate the data structures needed for using DMA with an interface
2008 * and fill the proper list of functions pointers
2011 pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
2013 /* We won't need pci_dev if we switch to generic consistent
2016 if (hwif->pci_dev == NULL)
2019 * Allocate space for the DBDMA commands.
2020 * The +2 is +1 for the stop command and +1 to allow for
2021 * aligning the start address to a multiple of 16 bytes.
2023 pmif->dma_table_cpu = (struct dbdma_cmd*)pci_alloc_consistent(
2025 (MAX_DCMDS + 2) * sizeof(struct dbdma_cmd),
2026 &hwif->dmatable_dma);
2027 if (pmif->dma_table_cpu == NULL) {
2028 printk(KERN_ERR "%s: unable to allocate DMA command list\n",
2033 hwif->dma_off_quietly = &ide_dma_off_quietly;
2034 hwif->ide_dma_on = &__ide_dma_on;
2035 hwif->ide_dma_check = &pmac_ide_dma_check;
2036 hwif->dma_setup = &pmac_ide_dma_setup;
2037 hwif->dma_exec_cmd = &pmac_ide_dma_exec_cmd;
2038 hwif->dma_start = &pmac_ide_dma_start;
2039 hwif->ide_dma_end = &pmac_ide_dma_end;
2040 hwif->ide_dma_test_irq = &pmac_ide_dma_test_irq;
2041 hwif->dma_host_off = &pmac_ide_dma_host_off;
2042 hwif->dma_host_on = &pmac_ide_dma_host_on;
2043 hwif->ide_dma_timeout = &__ide_dma_timeout;
2044 hwif->ide_dma_lostirq = &pmac_ide_dma_lostirq;
2046 hwif->atapi_dma = 1;
2047 switch(pmif->kind) {
2048 case controller_sh_ata6:
2049 hwif->ultra_mask = pmif->cable_80 ? 0x7f : 0x07;
2050 hwif->mwdma_mask = 0x07;
2051 hwif->swdma_mask = 0x00;
2053 case controller_un_ata6:
2054 case controller_k2_ata6:
2055 hwif->ultra_mask = pmif->cable_80 ? 0x3f : 0x07;
2056 hwif->mwdma_mask = 0x07;
2057 hwif->swdma_mask = 0x00;
2059 case controller_kl_ata4:
2060 hwif->ultra_mask = pmif->cable_80 ? 0x1f : 0x07;
2061 hwif->mwdma_mask = 0x07;
2062 hwif->swdma_mask = 0x00;
2065 hwif->ultra_mask = 0x00;
2066 hwif->mwdma_mask = 0x07;
2067 hwif->swdma_mask = 0x00;
2072 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */