2 * linux/drivers/ide/ide-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/config.h>
26 #include <linux/types.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/init.h>
30 #include <linux/delay.h>
31 #include <linux/ide.h>
32 #include <linux/notifier.h>
33 #include <linux/reboot.h>
34 #include <linux/pci.h>
35 #include <linux/adb.h>
36 #include <linux/pmu.h>
37 #include <linux/scatterlist.h>
41 #include <asm/dbdma.h>
43 #include <asm/pci-bridge.h>
44 #include <asm/machdep.h>
45 #include <asm/pmac_feature.h>
46 #include <asm/sections.h>
50 #include <asm/mediabay.h>
53 #include "ide-timing.h"
57 #define DMA_WAIT_TIMEOUT 50
59 typedef struct pmac_ide_hwif {
60 unsigned long regbase;
64 unsigned cable_80 : 1;
65 unsigned mediabay : 1;
66 unsigned broken_dma : 1;
67 unsigned broken_dma_warn : 1;
68 struct device_node* node;
69 struct macio_dev *mdev;
71 volatile u32 __iomem * *kauai_fcr;
72 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
73 /* Those fields are duplicating what is in hwif. We currently
74 * can't use the hwif ones because of some assumptions that are
75 * beeing done by the generic code about the kind of dma controller
76 * and format of the dma table. This will have to be fixed though.
78 volatile struct dbdma_regs __iomem * dma_regs;
79 struct dbdma_cmd* dma_table_cpu;
84 static pmac_ide_hwif_t pmac_ide[MAX_HWIFS];
85 static int pmac_ide_count;
88 controller_ohare, /* OHare based */
89 controller_heathrow, /* Heathrow/Paddington */
90 controller_kl_ata3, /* KeyLargo ATA-3 */
91 controller_kl_ata4, /* KeyLargo ATA-4 */
92 controller_un_ata6, /* UniNorth2 ATA-6 */
93 controller_k2_ata6, /* K2 ATA-6 */
94 controller_sh_ata6, /* Shasta ATA-6 */
97 static const char* model_name[] = {
98 "OHare ATA", /* OHare based */
99 "Heathrow ATA", /* Heathrow/Paddington */
100 "KeyLargo ATA-3", /* KeyLargo ATA-3 (MDMA only) */
101 "KeyLargo ATA-4", /* KeyLargo ATA-4 (UDMA/66) */
102 "UniNorth ATA-6", /* UniNorth2 ATA-6 (UDMA/100) */
103 "K2 ATA-6", /* K2 ATA-6 (UDMA/100) */
104 "Shasta ATA-6", /* Shasta ATA-6 (UDMA/133) */
108 * Extra registers, both 32-bit little-endian
110 #define IDE_TIMING_CONFIG 0x200
111 #define IDE_INTERRUPT 0x300
113 /* Kauai (U2) ATA has different register setup */
114 #define IDE_KAUAI_PIO_CONFIG 0x200
115 #define IDE_KAUAI_ULTRA_CONFIG 0x210
116 #define IDE_KAUAI_POLL_CONFIG 0x220
119 * Timing configuration register definitions
122 /* Number of IDE_SYSCLK_NS ticks, argument is in nanoseconds */
123 #define SYSCLK_TICKS(t) (((t) + IDE_SYSCLK_NS - 1) / IDE_SYSCLK_NS)
124 #define SYSCLK_TICKS_66(t) (((t) + IDE_SYSCLK_66_NS - 1) / IDE_SYSCLK_66_NS)
125 #define IDE_SYSCLK_NS 30 /* 33Mhz cell */
126 #define IDE_SYSCLK_66_NS 15 /* 66Mhz cell */
128 /* 133Mhz cell, found in shasta.
129 * See comments about 100 Mhz Uninorth 2...
130 * Note that PIO_MASK and MDMA_MASK seem to overlap
132 #define TR_133_PIOREG_PIO_MASK 0xff000fff
133 #define TR_133_PIOREG_MDMA_MASK 0x00fff800
134 #define TR_133_UDMAREG_UDMA_MASK 0x0003ffff
135 #define TR_133_UDMAREG_UDMA_EN 0x00000001
137 /* 100Mhz cell, found in Uninorth 2. I don't have much infos about
138 * this one yet, it appears as a pci device (106b/0033) on uninorth
139 * internal PCI bus and it's clock is controlled like gem or fw. It
140 * appears to be an evolution of keylargo ATA4 with a timing register
141 * extended to 2 32bits registers and a similar DBDMA channel. Other
142 * registers seem to exist but I can't tell much about them.
144 * So far, I'm using pre-calculated tables for this extracted from
145 * the values used by the MacOS X driver.
147 * The "PIO" register controls PIO and MDMA timings, the "ULTRA"
148 * register controls the UDMA timings. At least, it seems bit 0
149 * of this one enables UDMA vs. MDMA, and bits 4..7 are the
150 * cycle time in units of 10ns. Bits 8..15 are used by I don't
151 * know their meaning yet
153 #define TR_100_PIOREG_PIO_MASK 0xff000fff
154 #define TR_100_PIOREG_MDMA_MASK 0x00fff000
155 #define TR_100_UDMAREG_UDMA_MASK 0x0000ffff
156 #define TR_100_UDMAREG_UDMA_EN 0x00000001
159 /* 66Mhz cell, found in KeyLargo. Can do ultra mode 0 to 2 on
160 * 40 connector cable and to 4 on 80 connector one.
161 * Clock unit is 15ns (66Mhz)
163 * 3 Values can be programmed:
164 * - Write data setup, which appears to match the cycle time. They
165 * also call it DIOW setup.
166 * - Ready to pause time (from spec)
167 * - Address setup. That one is weird. I don't see where exactly
168 * it fits in UDMA cycles, I got it's name from an obscure piece
169 * of commented out code in Darwin. They leave it to 0, we do as
170 * well, despite a comment that would lead to think it has a
172 * Apple also add 60ns to the write data setup (or cycle time ?) on
175 #define TR_66_UDMA_MASK 0xfff00000
176 #define TR_66_UDMA_EN 0x00100000 /* Enable Ultra mode for DMA */
177 #define TR_66_UDMA_ADDRSETUP_MASK 0xe0000000 /* Address setup */
178 #define TR_66_UDMA_ADDRSETUP_SHIFT 29
179 #define TR_66_UDMA_RDY2PAUS_MASK 0x1e000000 /* Ready 2 pause time */
180 #define TR_66_UDMA_RDY2PAUS_SHIFT 25
181 #define TR_66_UDMA_WRDATASETUP_MASK 0x01e00000 /* Write data setup time */
182 #define TR_66_UDMA_WRDATASETUP_SHIFT 21
183 #define TR_66_MDMA_MASK 0x000ffc00
184 #define TR_66_MDMA_RECOVERY_MASK 0x000f8000
185 #define TR_66_MDMA_RECOVERY_SHIFT 15
186 #define TR_66_MDMA_ACCESS_MASK 0x00007c00
187 #define TR_66_MDMA_ACCESS_SHIFT 10
188 #define TR_66_PIO_MASK 0x000003ff
189 #define TR_66_PIO_RECOVERY_MASK 0x000003e0
190 #define TR_66_PIO_RECOVERY_SHIFT 5
191 #define TR_66_PIO_ACCESS_MASK 0x0000001f
192 #define TR_66_PIO_ACCESS_SHIFT 0
194 /* 33Mhz cell, found in OHare, Heathrow (& Paddington) and KeyLargo
195 * Can do pio & mdma modes, clock unit is 30ns (33Mhz)
197 * The access time and recovery time can be programmed. Some older
198 * Darwin code base limit OHare to 150ns cycle time. I decided to do
199 * the same here fore safety against broken old hardware ;)
200 * The HalfTick bit, when set, adds half a clock (15ns) to the access
201 * time and removes one from recovery. It's not supported on KeyLargo
202 * implementation afaik. The E bit appears to be set for PIO mode 0 and
203 * is used to reach long timings used in this mode.
205 #define TR_33_MDMA_MASK 0x003ff800
206 #define TR_33_MDMA_RECOVERY_MASK 0x001f0000
207 #define TR_33_MDMA_RECOVERY_SHIFT 16
208 #define TR_33_MDMA_ACCESS_MASK 0x0000f800
209 #define TR_33_MDMA_ACCESS_SHIFT 11
210 #define TR_33_MDMA_HALFTICK 0x00200000
211 #define TR_33_PIO_MASK 0x000007ff
212 #define TR_33_PIO_E 0x00000400
213 #define TR_33_PIO_RECOVERY_MASK 0x000003e0
214 #define TR_33_PIO_RECOVERY_SHIFT 5
215 #define TR_33_PIO_ACCESS_MASK 0x0000001f
216 #define TR_33_PIO_ACCESS_SHIFT 0
219 * Interrupt register definitions
221 #define IDE_INTR_DMA 0x80000000
222 #define IDE_INTR_DEVICE 0x40000000
225 * FCR Register on Kauai. Not sure what bit 0x4 is ...
227 #define KAUAI_FCR_UATA_MAGIC 0x00000004
228 #define KAUAI_FCR_UATA_RESET_N 0x00000002
229 #define KAUAI_FCR_UATA_ENABLE 0x00000001
231 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
233 /* Rounded Multiword DMA timings
235 * I gave up finding a generic formula for all controller
236 * types and instead, built tables based on timing values
237 * used by Apple in Darwin's implementation.
239 struct mdma_timings_t {
245 struct mdma_timings_t mdma_timings_33[] =
258 struct mdma_timings_t mdma_timings_33k[] =
271 struct mdma_timings_t mdma_timings_66[] =
284 /* KeyLargo ATA-4 Ultra DMA timings (rounded) */
286 int addrSetup; /* ??? */
289 } kl66_udma_timings[] =
291 { 0, 180, 120 }, /* Mode 0 */
292 { 0, 150, 90 }, /* 1 */
293 { 0, 120, 60 }, /* 2 */
294 { 0, 90, 45 }, /* 3 */
295 { 0, 90, 30 } /* 4 */
298 /* UniNorth 2 ATA/100 timings */
299 struct kauai_timing {
304 static struct kauai_timing kauai_pio_timings[] =
306 { 930 , 0x08000fff },
307 { 600 , 0x08000a92 },
308 { 383 , 0x0800060f },
309 { 360 , 0x08000492 },
310 { 330 , 0x0800048f },
311 { 300 , 0x080003cf },
312 { 270 , 0x080003cc },
313 { 240 , 0x0800038b },
314 { 239 , 0x0800030c },
315 { 180 , 0x05000249 },
319 static struct kauai_timing kauai_mdma_timings[] =
321 { 1260 , 0x00fff000 },
322 { 480 , 0x00618000 },
323 { 360 , 0x00492000 },
324 { 270 , 0x0038e000 },
325 { 240 , 0x0030c000 },
326 { 210 , 0x002cb000 },
327 { 180 , 0x00249000 },
328 { 150 , 0x00209000 },
329 { 120 , 0x00148000 },
333 static struct kauai_timing kauai_udma_timings[] =
335 { 120 , 0x000070c0 },
344 static struct kauai_timing shasta_pio_timings[] =
346 { 930 , 0x08000fff },
347 { 600 , 0x0A000c97 },
348 { 383 , 0x07000712 },
349 { 360 , 0x040003cd },
350 { 330 , 0x040003cd },
351 { 300 , 0x040003cd },
352 { 270 , 0x040003cd },
353 { 240 , 0x040003cd },
354 { 239 , 0x040003cd },
355 { 180 , 0x0400028b },
359 static struct kauai_timing shasta_mdma_timings[] =
361 { 1260 , 0x00fff000 },
362 { 480 , 0x00820800 },
363 { 360 , 0x00820800 },
364 { 270 , 0x00820800 },
365 { 240 , 0x00820800 },
366 { 210 , 0x00820800 },
367 { 180 , 0x00820800 },
368 { 150 , 0x0028b000 },
369 { 120 , 0x001ca000 },
373 static struct kauai_timing shasta_udma133_timings[] =
375 { 120 , 0x00035901, },
376 { 90 , 0x000348b1, },
377 { 60 , 0x00033881, },
378 { 45 , 0x00033861, },
379 { 30 , 0x00033841, },
380 { 20 , 0x00033031, },
381 { 15 , 0x00033021, },
387 kauai_lookup_timing(struct kauai_timing* table, int cycle_time)
391 for (i=0; table[i].cycle_time; i++)
392 if (cycle_time > table[i+1].cycle_time)
393 return table[i].timing_reg;
397 /* allow up to 256 DBDMA commands per xfer */
398 #define MAX_DCMDS 256
401 * Wait 1s for disk to answer on IDE bus after a hard reset
402 * of the device (via GPIO/FCR).
404 * Some devices seem to "pollute" the bus even after dropping
405 * the BSY bit (typically some combo drives slave on the UDMA
406 * bus) after a hard reset. Since we hard reset all drives on
407 * KeyLargo ATA66, we have to keep that delay around. I may end
408 * up not hard resetting anymore on these and keep the delay only
409 * for older interfaces instead (we have to reset when coming
410 * from MacOS...) --BenH.
412 #define IDE_WAKEUP_DELAY (1*HZ)
414 static void pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif);
415 static int pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq);
416 static int pmac_ide_tune_chipset(ide_drive_t *drive, u8 speed);
417 static void pmac_ide_tuneproc(ide_drive_t *drive, u8 pio);
418 static void pmac_ide_selectproc(ide_drive_t *drive);
419 static void pmac_ide_kauai_selectproc(ide_drive_t *drive);
421 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
424 * Below is the code for blinking the laptop LED along with hard
428 #ifdef CONFIG_BLK_DEV_IDE_PMAC_BLINK
430 /* Set to 50ms minimum led-on time (also used to limit frequency
431 * of requests sent to the PMU
433 #define PMU_HD_BLINK_TIME (HZ/50)
435 static struct adb_request pmu_blink_on, pmu_blink_off;
436 static spinlock_t pmu_blink_lock;
437 static unsigned long pmu_blink_stoptime;
438 static int pmu_blink_ledstate;
439 static struct timer_list pmu_blink_timer;
440 static int pmu_ide_blink_enabled;
444 pmu_hd_blink_timeout(unsigned long data)
448 spin_lock_irqsave(&pmu_blink_lock, flags);
450 /* We may have been triggered again in a racy way, check
451 * that we really want to switch it off
453 if (time_after(pmu_blink_stoptime, jiffies))
456 /* Previous req. not complete, try 100ms more */
457 if (pmu_blink_off.complete == 0)
458 mod_timer(&pmu_blink_timer, jiffies + PMU_HD_BLINK_TIME);
459 else if (pmu_blink_ledstate) {
460 pmu_request(&pmu_blink_off, NULL, 4, 0xee, 4, 0, 0);
461 pmu_blink_ledstate = 0;
464 spin_unlock_irqrestore(&pmu_blink_lock, flags);
468 pmu_hd_kick_blink(void *data, int rw)
472 pmu_blink_stoptime = jiffies + PMU_HD_BLINK_TIME;
474 mod_timer(&pmu_blink_timer, pmu_blink_stoptime);
475 /* Fast path when LED is already ON */
476 if (pmu_blink_ledstate == 1)
478 spin_lock_irqsave(&pmu_blink_lock, flags);
479 if (pmu_blink_on.complete && !pmu_blink_ledstate) {
480 pmu_request(&pmu_blink_on, NULL, 4, 0xee, 4, 0, 1);
481 pmu_blink_ledstate = 1;
483 spin_unlock_irqrestore(&pmu_blink_lock, flags);
487 pmu_hd_blink_init(void)
489 struct device_node *dt;
492 /* Currently, I only enable this feature on KeyLargo based laptops,
493 * older laptops may support it (at least heathrow/paddington) but
494 * I don't feel like loading those venerable old machines with so
495 * much additional interrupt & PMU activity...
497 if (pmu_get_model() != PMU_KEYLARGO_BASED)
500 dt = of_find_node_by_path("/");
503 model = (const char *)get_property(dt, "model", NULL);
506 if (strncmp(model, "PowerBook", strlen("PowerBook")) != 0 &&
507 strncmp(model, "iBook", strlen("iBook")) != 0) {
513 pmu_blink_on.complete = 1;
514 pmu_blink_off.complete = 1;
515 spin_lock_init(&pmu_blink_lock);
516 init_timer(&pmu_blink_timer);
517 pmu_blink_timer.function = pmu_hd_blink_timeout;
522 #endif /* CONFIG_BLK_DEV_IDE_PMAC_BLINK */
525 * N.B. this can't be an initfunc, because the media-bay task can
526 * call ide_[un]register at any time.
529 pmac_ide_init_hwif_ports(hw_regs_t *hw,
530 unsigned long data_port, unsigned long ctrl_port,
538 for (ix = 0; ix < MAX_HWIFS; ++ix)
539 if (data_port == pmac_ide[ix].regbase)
542 if (ix >= MAX_HWIFS) {
543 /* Probably a PCI interface... */
544 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; ++i)
545 hw->io_ports[i] = data_port + i - IDE_DATA_OFFSET;
546 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
550 for (i = 0; i < 8; ++i)
551 hw->io_ports[i] = data_port + i * 0x10;
552 hw->io_ports[8] = data_port + 0x160;
555 *irq = pmac_ide[ix].irq;
557 hw->dev = &pmac_ide[ix].mdev->ofdev.dev;
560 #define PMAC_IDE_REG(x) ((void __iomem *)(IDE_DATA_REG+(x)))
563 * Apply the timings of the proper unit (master/slave) to the shared
564 * timing register when selecting that unit. This version is for
565 * ASICs with a single timing register
568 pmac_ide_selectproc(ide_drive_t *drive)
570 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
575 if (drive->select.b.unit & 0x01)
576 writel(pmif->timings[1], PMAC_IDE_REG(IDE_TIMING_CONFIG));
578 writel(pmif->timings[0], PMAC_IDE_REG(IDE_TIMING_CONFIG));
579 (void)readl(PMAC_IDE_REG(IDE_TIMING_CONFIG));
583 * Apply the timings of the proper unit (master/slave) to the shared
584 * timing register when selecting that unit. This version is for
585 * ASICs with a dual timing register (Kauai)
588 pmac_ide_kauai_selectproc(ide_drive_t *drive)
590 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
595 if (drive->select.b.unit & 0x01) {
596 writel(pmif->timings[1], PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG));
597 writel(pmif->timings[3], PMAC_IDE_REG(IDE_KAUAI_ULTRA_CONFIG));
599 writel(pmif->timings[0], PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG));
600 writel(pmif->timings[2], PMAC_IDE_REG(IDE_KAUAI_ULTRA_CONFIG));
602 (void)readl(PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG));
606 * Force an update of controller timing values for a given drive
609 pmac_ide_do_update_timings(ide_drive_t *drive)
611 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
616 if (pmif->kind == controller_sh_ata6 ||
617 pmif->kind == controller_un_ata6 ||
618 pmif->kind == controller_k2_ata6)
619 pmac_ide_kauai_selectproc(drive);
621 pmac_ide_selectproc(drive);
625 pmac_outbsync(ide_drive_t *drive, u8 value, unsigned long port)
629 writeb(value, (void __iomem *) port);
630 tmp = readl(PMAC_IDE_REG(IDE_TIMING_CONFIG));
634 * Send the SET_FEATURE IDE command to the drive and update drive->id with
635 * the new state. We currently don't use the generic routine as it used to
636 * cause various trouble, especially with older mediabays.
637 * This code is sometimes triggering a spurrious interrupt though, I need
638 * to sort that out sooner or later and see if I can finally get the
639 * common version to work properly in all cases
642 pmac_ide_do_setfeature(ide_drive_t *drive, u8 command)
644 ide_hwif_t *hwif = HWIF(drive);
647 disable_irq_nosync(hwif->irq);
650 SELECT_MASK(drive, 0);
652 /* Get rid of pending error state */
653 (void) hwif->INB(IDE_STATUS_REG);
654 /* Timeout bumped for some powerbooks */
655 if (wait_for_ready(drive, 2000)) {
656 /* Timeout bumped for some powerbooks */
657 printk(KERN_ERR "%s: pmac_ide_do_setfeature disk not ready "
658 "before SET_FEATURE!\n", drive->name);
662 hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
663 hwif->OUTB(command, IDE_NSECTOR_REG);
664 hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
665 hwif->OUTBSYNC(drive, WIN_SETFEATURES, IDE_COMMAND_REG);
667 /* Timeout bumped for some powerbooks */
668 result = wait_for_ready(drive, 2000);
669 hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
671 printk(KERN_ERR "%s: pmac_ide_do_setfeature disk not ready "
672 "after SET_FEATURE !\n", drive->name);
674 SELECT_MASK(drive, 0);
676 drive->id->dma_ultra &= ~0xFF00;
677 drive->id->dma_mword &= ~0x0F00;
678 drive->id->dma_1word &= ~0x0F00;
681 drive->id->dma_ultra |= 0x8080; break;
683 drive->id->dma_ultra |= 0x4040; break;
685 drive->id->dma_ultra |= 0x2020; break;
687 drive->id->dma_ultra |= 0x1010; break;
689 drive->id->dma_ultra |= 0x0808; break;
691 drive->id->dma_ultra |= 0x0404; break;
693 drive->id->dma_ultra |= 0x0202; break;
695 drive->id->dma_ultra |= 0x0101; break;
697 drive->id->dma_mword |= 0x0404; break;
699 drive->id->dma_mword |= 0x0202; break;
701 drive->id->dma_mword |= 0x0101; break;
703 drive->id->dma_1word |= 0x0404; break;
705 drive->id->dma_1word |= 0x0202; break;
707 drive->id->dma_1word |= 0x0101; break;
711 enable_irq(hwif->irq);
716 * Old tuning functions (called on hdparm -p), sets up drive PIO timings
719 pmac_ide_tuneproc(ide_drive_t *drive, u8 pio)
723 unsigned accessTicks, recTicks;
724 unsigned accessTime, recTime;
725 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
730 /* which drive is it ? */
731 timings = &pmif->timings[drive->select.b.unit & 0x01];
733 pio = ide_get_best_pio_mode(drive, pio, 4, &d);
735 switch (pmif->kind) {
736 case controller_sh_ata6: {
738 u32 tr = kauai_lookup_timing(shasta_pio_timings, d.cycle_time);
741 *timings = ((*timings) & ~TR_133_PIOREG_PIO_MASK) | tr;
744 case controller_un_ata6:
745 case controller_k2_ata6: {
747 u32 tr = kauai_lookup_timing(kauai_pio_timings, d.cycle_time);
750 *timings = ((*timings) & ~TR_100_PIOREG_PIO_MASK) | tr;
753 case controller_kl_ata4:
755 recTime = d.cycle_time - ide_pio_timings[pio].active_time
756 - ide_pio_timings[pio].setup_time;
757 recTime = max(recTime, 150U);
758 accessTime = ide_pio_timings[pio].active_time;
759 accessTime = max(accessTime, 150U);
760 accessTicks = SYSCLK_TICKS_66(accessTime);
761 accessTicks = min(accessTicks, 0x1fU);
762 recTicks = SYSCLK_TICKS_66(recTime);
763 recTicks = min(recTicks, 0x1fU);
764 *timings = ((*timings) & ~TR_66_PIO_MASK) |
765 (accessTicks << TR_66_PIO_ACCESS_SHIFT) |
766 (recTicks << TR_66_PIO_RECOVERY_SHIFT);
771 recTime = d.cycle_time - ide_pio_timings[pio].active_time
772 - ide_pio_timings[pio].setup_time;
773 recTime = max(recTime, 150U);
774 accessTime = ide_pio_timings[pio].active_time;
775 accessTime = max(accessTime, 150U);
776 accessTicks = SYSCLK_TICKS(accessTime);
777 accessTicks = min(accessTicks, 0x1fU);
778 accessTicks = max(accessTicks, 4U);
779 recTicks = SYSCLK_TICKS(recTime);
780 recTicks = min(recTicks, 0x1fU);
781 recTicks = max(recTicks, 5U) - 4;
783 recTicks--; /* guess, but it's only for PIO0, so... */
786 *timings = ((*timings) & ~TR_33_PIO_MASK) |
787 (accessTicks << TR_33_PIO_ACCESS_SHIFT) |
788 (recTicks << TR_33_PIO_RECOVERY_SHIFT);
790 *timings |= TR_33_PIO_E;
795 #ifdef IDE_PMAC_DEBUG
796 printk(KERN_ERR "%s: Set PIO timing for mode %d, reg: 0x%08x\n",
797 drive->name, pio, *timings);
800 if (drive->select.all == HWIF(drive)->INB(IDE_SELECT_REG))
801 pmac_ide_do_update_timings(drive);
804 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
807 * Calculate KeyLargo ATA/66 UDMA timings
810 set_timings_udma_ata4(u32 *timings, u8 speed)
812 unsigned rdyToPauseTicks, wrDataSetupTicks, addrTicks;
814 if (speed > XFER_UDMA_4)
817 rdyToPauseTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].rdy2pause);
818 wrDataSetupTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].wrDataSetup);
819 addrTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].addrSetup);
821 *timings = ((*timings) & ~(TR_66_UDMA_MASK | TR_66_MDMA_MASK)) |
822 (wrDataSetupTicks << TR_66_UDMA_WRDATASETUP_SHIFT) |
823 (rdyToPauseTicks << TR_66_UDMA_RDY2PAUS_SHIFT) |
824 (addrTicks <<TR_66_UDMA_ADDRSETUP_SHIFT) |
826 #ifdef IDE_PMAC_DEBUG
827 printk(KERN_ERR "ide_pmac: Set UDMA timing for mode %d, reg: 0x%08x\n",
828 speed & 0xf, *timings);
835 * Calculate Kauai ATA/100 UDMA timings
838 set_timings_udma_ata6(u32 *pio_timings, u32 *ultra_timings, u8 speed)
840 struct ide_timing *t = ide_timing_find_mode(speed);
843 if (speed > XFER_UDMA_5 || t == NULL)
845 tr = kauai_lookup_timing(kauai_udma_timings, (int)t->udma);
848 *ultra_timings = ((*ultra_timings) & ~TR_100_UDMAREG_UDMA_MASK) | tr;
849 *ultra_timings = (*ultra_timings) | TR_100_UDMAREG_UDMA_EN;
855 * Calculate Shasta ATA/133 UDMA timings
858 set_timings_udma_shasta(u32 *pio_timings, u32 *ultra_timings, u8 speed)
860 struct ide_timing *t = ide_timing_find_mode(speed);
863 if (speed > XFER_UDMA_6 || t == NULL)
865 tr = kauai_lookup_timing(shasta_udma133_timings, (int)t->udma);
868 *ultra_timings = ((*ultra_timings) & ~TR_133_UDMAREG_UDMA_MASK) | tr;
869 *ultra_timings = (*ultra_timings) | TR_133_UDMAREG_UDMA_EN;
875 * Calculate MDMA timings for all cells
878 set_timings_mdma(ide_drive_t *drive, int intf_type, u32 *timings, u32 *timings2,
879 u8 speed, int drive_cycle_time)
881 int cycleTime, accessTime = 0, recTime = 0;
882 unsigned accessTicks, recTicks;
883 struct mdma_timings_t* tm = NULL;
886 /* Get default cycle time for mode */
887 switch(speed & 0xf) {
888 case 0: cycleTime = 480; break;
889 case 1: cycleTime = 150; break;
890 case 2: cycleTime = 120; break;
894 /* Adjust for drive */
895 if (drive_cycle_time && drive_cycle_time > cycleTime)
896 cycleTime = drive_cycle_time;
897 /* OHare limits according to some old Apple sources */
898 if ((intf_type == controller_ohare) && (cycleTime < 150))
900 /* Get the proper timing array for this controller */
902 case controller_sh_ata6:
903 case controller_un_ata6:
904 case controller_k2_ata6:
906 case controller_kl_ata4:
907 tm = mdma_timings_66;
909 case controller_kl_ata3:
910 tm = mdma_timings_33k;
913 tm = mdma_timings_33;
917 /* Lookup matching access & recovery times */
920 if (tm[i+1].cycleTime < cycleTime)
926 cycleTime = tm[i].cycleTime;
927 accessTime = tm[i].accessTime;
928 recTime = tm[i].recoveryTime;
930 #ifdef IDE_PMAC_DEBUG
931 printk(KERN_ERR "%s: MDMA, cycleTime: %d, accessTime: %d, recTime: %d\n",
932 drive->name, cycleTime, accessTime, recTime);
936 case controller_sh_ata6: {
938 u32 tr = kauai_lookup_timing(shasta_mdma_timings, cycleTime);
941 *timings = ((*timings) & ~TR_133_PIOREG_MDMA_MASK) | tr;
942 *timings2 = (*timings2) & ~TR_133_UDMAREG_UDMA_EN;
944 case controller_un_ata6:
945 case controller_k2_ata6: {
947 u32 tr = kauai_lookup_timing(kauai_mdma_timings, cycleTime);
950 *timings = ((*timings) & ~TR_100_PIOREG_MDMA_MASK) | tr;
951 *timings2 = (*timings2) & ~TR_100_UDMAREG_UDMA_EN;
954 case controller_kl_ata4:
956 accessTicks = SYSCLK_TICKS_66(accessTime);
957 accessTicks = min(accessTicks, 0x1fU);
958 accessTicks = max(accessTicks, 0x1U);
959 recTicks = SYSCLK_TICKS_66(recTime);
960 recTicks = min(recTicks, 0x1fU);
961 recTicks = max(recTicks, 0x3U);
962 /* Clear out mdma bits and disable udma */
963 *timings = ((*timings) & ~(TR_66_MDMA_MASK | TR_66_UDMA_MASK)) |
964 (accessTicks << TR_66_MDMA_ACCESS_SHIFT) |
965 (recTicks << TR_66_MDMA_RECOVERY_SHIFT);
967 case controller_kl_ata3:
968 /* 33Mhz cell on KeyLargo */
969 accessTicks = SYSCLK_TICKS(accessTime);
970 accessTicks = max(accessTicks, 1U);
971 accessTicks = min(accessTicks, 0x1fU);
972 accessTime = accessTicks * IDE_SYSCLK_NS;
973 recTicks = SYSCLK_TICKS(recTime);
974 recTicks = max(recTicks, 1U);
975 recTicks = min(recTicks, 0x1fU);
976 *timings = ((*timings) & ~TR_33_MDMA_MASK) |
977 (accessTicks << TR_33_MDMA_ACCESS_SHIFT) |
978 (recTicks << TR_33_MDMA_RECOVERY_SHIFT);
981 /* 33Mhz cell on others */
983 int origAccessTime = accessTime;
984 int origRecTime = recTime;
986 accessTicks = SYSCLK_TICKS(accessTime);
987 accessTicks = max(accessTicks, 1U);
988 accessTicks = min(accessTicks, 0x1fU);
989 accessTime = accessTicks * IDE_SYSCLK_NS;
990 recTicks = SYSCLK_TICKS(recTime);
991 recTicks = max(recTicks, 2U) - 1;
992 recTicks = min(recTicks, 0x1fU);
993 recTime = (recTicks + 1) * IDE_SYSCLK_NS;
994 if ((accessTicks > 1) &&
995 ((accessTime - IDE_SYSCLK_NS/2) >= origAccessTime) &&
996 ((recTime - IDE_SYSCLK_NS/2) >= origRecTime)) {
1000 *timings = ((*timings) & ~TR_33_MDMA_MASK) |
1001 (accessTicks << TR_33_MDMA_ACCESS_SHIFT) |
1002 (recTicks << TR_33_MDMA_RECOVERY_SHIFT);
1004 *timings |= TR_33_MDMA_HALFTICK;
1007 #ifdef IDE_PMAC_DEBUG
1008 printk(KERN_ERR "%s: Set MDMA timing for mode %d, reg: 0x%08x\n",
1009 drive->name, speed & 0xf, *timings);
1013 #endif /* #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC */
1016 * Speedproc. This function is called by the core to set any of the standard
1017 * timing (PIO, MDMA or UDMA) to both the drive and the controller.
1018 * You may notice we don't use this function on normal "dma check" operation,
1019 * our dedicated function is more precise as it uses the drive provided
1020 * cycle time value. We should probably fix this one to deal with that too...
1023 pmac_ide_tune_chipset (ide_drive_t *drive, byte speed)
1025 int unit = (drive->select.b.unit & 0x01);
1027 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
1028 u32 *timings, *timings2;
1033 timings = &pmif->timings[unit];
1034 timings2 = &pmif->timings[unit+2];
1037 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1039 if (pmif->kind != controller_sh_ata6)
1042 if (pmif->kind != controller_un_ata6 &&
1043 pmif->kind != controller_k2_ata6 &&
1044 pmif->kind != controller_sh_ata6)
1048 if (HWIF(drive)->udma_four == 0)
1053 if (pmif->kind == controller_kl_ata4)
1054 ret = set_timings_udma_ata4(timings, speed);
1055 else if (pmif->kind == controller_un_ata6
1056 || pmif->kind == controller_k2_ata6)
1057 ret = set_timings_udma_ata6(timings, timings2, speed);
1058 else if (pmif->kind == controller_sh_ata6)
1059 ret = set_timings_udma_shasta(timings, timings2, speed);
1066 ret = set_timings_mdma(drive, pmif->kind, timings, timings2, speed, 0);
1072 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
1078 pmac_ide_tuneproc(drive, speed & 0x07);
1086 ret = pmac_ide_do_setfeature(drive, speed);
1090 pmac_ide_do_update_timings(drive);
1091 drive->current_speed = speed;
1097 * Blast some well known "safe" values to the timing registers at init or
1098 * wakeup from sleep time, before we do real calculation
1101 sanitize_timings(pmac_ide_hwif_t *pmif)
1103 unsigned int value, value2 = 0;
1105 switch(pmif->kind) {
1106 case controller_sh_ata6:
1108 value2 = 0x00033031;
1110 case controller_un_ata6:
1111 case controller_k2_ata6:
1113 value2 = 0x00002921;
1115 case controller_kl_ata4:
1118 case controller_kl_ata3:
1121 case controller_heathrow:
1122 case controller_ohare:
1127 pmif->timings[0] = pmif->timings[1] = value;
1128 pmif->timings[2] = pmif->timings[3] = value2;
1132 pmac_ide_get_base(int index)
1134 return pmac_ide[index].regbase;
1138 pmac_ide_check_base(unsigned long base)
1142 for (ix = 0; ix < MAX_HWIFS; ++ix)
1143 if (base == pmac_ide[ix].regbase)
1149 pmac_ide_get_irq(unsigned long base)
1153 for (ix = 0; ix < MAX_HWIFS; ++ix)
1154 if (base == pmac_ide[ix].regbase)
1155 return pmac_ide[ix].irq;
1159 static int ide_majors[] = { 3, 22, 33, 34, 56, 57 };
1162 pmac_find_ide_boot(char *bootdevice, int n)
1167 * Look through the list of IDE interfaces for this one.
1169 for (i = 0; i < pmac_ide_count; ++i) {
1171 if (!pmac_ide[i].node || !pmac_ide[i].node->full_name)
1173 name = pmac_ide[i].node->full_name;
1174 if (memcmp(name, bootdevice, n) == 0 && name[n] == 0) {
1175 /* XXX should cope with the 2nd drive as well... */
1176 return MKDEV(ide_majors[i], 0);
1183 /* Suspend call back, should be called after the child devices
1184 * have actually been suspended
1187 pmac_ide_do_suspend(ide_hwif_t *hwif)
1189 pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1191 /* We clear the timings */
1192 pmif->timings[0] = 0;
1193 pmif->timings[1] = 0;
1195 #ifdef CONFIG_BLK_DEV_IDE_PMAC_BLINK
1196 /* Note: This code will be called for every hwif, thus we'll
1197 * try several time to stop the LED blinker timer, but that
1198 * should be harmless
1200 if (pmu_ide_blink_enabled) {
1201 unsigned long flags;
1203 /* Make sure we don't hit the PMU blink */
1204 spin_lock_irqsave(&pmu_blink_lock, flags);
1205 if (pmu_blink_ledstate)
1206 del_timer(&pmu_blink_timer);
1207 pmu_blink_ledstate = 0;
1208 spin_unlock_irqrestore(&pmu_blink_lock, flags);
1210 #endif /* CONFIG_BLK_DEV_IDE_PMAC_BLINK */
1212 disable_irq(pmif->irq);
1214 /* The media bay will handle itself just fine */
1218 /* Kauai has bus control FCRs directly here */
1219 if (pmif->kauai_fcr) {
1220 u32 fcr = readl(pmif->kauai_fcr);
1221 fcr &= ~(KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE);
1222 writel(fcr, pmif->kauai_fcr);
1225 /* Disable the bus on older machines and the cell on kauai */
1226 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, pmif->node, pmif->aapl_bus_id,
1232 /* Resume call back, should be called before the child devices
1236 pmac_ide_do_resume(ide_hwif_t *hwif)
1238 pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1240 /* Hard reset & re-enable controller (do we really need to reset ? -BenH) */
1241 if (!pmif->mediabay) {
1242 ppc_md.feature_call(PMAC_FTR_IDE_RESET, pmif->node, pmif->aapl_bus_id, 1);
1243 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, pmif->node, pmif->aapl_bus_id, 1);
1245 ppc_md.feature_call(PMAC_FTR_IDE_RESET, pmif->node, pmif->aapl_bus_id, 0);
1247 /* Kauai has it different */
1248 if (pmif->kauai_fcr) {
1249 u32 fcr = readl(pmif->kauai_fcr);
1250 fcr |= KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE;
1251 writel(fcr, pmif->kauai_fcr);
1254 msleep(jiffies_to_msecs(IDE_WAKEUP_DELAY));
1257 /* Sanitize drive timings */
1258 sanitize_timings(pmif);
1260 enable_irq(pmif->irq);
1266 * Setup, register & probe an IDE channel driven by this driver, this is
1267 * called by one of the 2 probe functions (macio or PCI). Note that a channel
1268 * that ends up beeing free of any device is not kept around by this driver
1269 * (it is kept in 2.4). This introduce an interface numbering change on some
1270 * rare machines unfortunately, but it's better this way.
1273 pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
1275 struct device_node *np = pmif->node;
1279 pmif->broken_dma = pmif->broken_dma_warn = 0;
1280 if (device_is_compatible(np, "shasta-ata"))
1281 pmif->kind = controller_sh_ata6;
1282 else if (device_is_compatible(np, "kauai-ata"))
1283 pmif->kind = controller_un_ata6;
1284 else if (device_is_compatible(np, "K2-UATA"))
1285 pmif->kind = controller_k2_ata6;
1286 else if (device_is_compatible(np, "keylargo-ata")) {
1287 if (strcmp(np->name, "ata-4") == 0)
1288 pmif->kind = controller_kl_ata4;
1290 pmif->kind = controller_kl_ata3;
1291 } else if (device_is_compatible(np, "heathrow-ata"))
1292 pmif->kind = controller_heathrow;
1294 pmif->kind = controller_ohare;
1295 pmif->broken_dma = 1;
1298 bidp = (int *)get_property(np, "AAPL,bus-id", NULL);
1299 pmif->aapl_bus_id = bidp ? *bidp : 0;
1301 /* Get cable type from device-tree */
1302 if (pmif->kind == controller_kl_ata4 || pmif->kind == controller_un_ata6
1303 || pmif->kind == controller_k2_ata6
1304 || pmif->kind == controller_sh_ata6) {
1305 char* cable = get_property(np, "cable-type", NULL);
1306 if (cable && !strncmp(cable, "80-", 3))
1309 /* G5's seem to have incorrect cable type in device-tree. Let's assume
1310 * they have a 80 conductor cable, this seem to be always the case unless
1311 * the user mucked around
1313 if (device_is_compatible(np, "K2-UATA") ||
1314 device_is_compatible(np, "shasta-ata"))
1317 /* On Kauai-type controllers, we make sure the FCR is correct */
1318 if (pmif->kauai_fcr)
1319 writel(KAUAI_FCR_UATA_MAGIC |
1320 KAUAI_FCR_UATA_RESET_N |
1321 KAUAI_FCR_UATA_ENABLE, pmif->kauai_fcr);
1325 /* Make sure we have sane timings */
1326 sanitize_timings(pmif);
1328 #ifndef CONFIG_PPC64
1329 /* XXX FIXME: Media bay stuff need re-organizing */
1330 if (np->parent && np->parent->name
1331 && strcasecmp(np->parent->name, "media-bay") == 0) {
1332 #ifdef CONFIG_PMAC_MEDIABAY
1333 media_bay_set_ide_infos(np->parent, pmif->regbase, pmif->irq, hwif->index);
1334 #endif /* CONFIG_PMAC_MEDIABAY */
1337 pmif->aapl_bus_id = 1;
1338 } else if (pmif->kind == controller_ohare) {
1339 /* The code below is having trouble on some ohare machines
1340 * (timing related ?). Until I can put my hand on one of these
1341 * units, I keep the old way
1343 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, np, 0, 1);
1347 /* This is necessary to enable IDE when net-booting */
1348 ppc_md.feature_call(PMAC_FTR_IDE_RESET, np, pmif->aapl_bus_id, 1);
1349 ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, np, pmif->aapl_bus_id, 1);
1351 ppc_md.feature_call(PMAC_FTR_IDE_RESET, np, pmif->aapl_bus_id, 0);
1352 msleep(jiffies_to_msecs(IDE_WAKEUP_DELAY));
1355 /* Setup MMIO ops */
1356 default_hwif_mmiops(hwif);
1357 hwif->OUTBSYNC = pmac_outbsync;
1359 /* Tell common code _not_ to mess with resources */
1361 hwif->hwif_data = pmif;
1362 pmac_ide_init_hwif_ports(&hwif->hw, pmif->regbase, 0, &hwif->irq);
1363 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1364 hwif->chipset = ide_pmac;
1365 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET] || pmif->mediabay;
1366 hwif->hold = pmif->mediabay;
1367 hwif->udma_four = pmif->cable_80;
1368 hwif->drives[0].unmask = 1;
1369 hwif->drives[1].unmask = 1;
1370 hwif->tuneproc = pmac_ide_tuneproc;
1371 if (pmif->kind == controller_un_ata6
1372 || pmif->kind == controller_k2_ata6
1373 || pmif->kind == controller_sh_ata6)
1374 hwif->selectproc = pmac_ide_kauai_selectproc;
1376 hwif->selectproc = pmac_ide_selectproc;
1377 hwif->speedproc = pmac_ide_tune_chipset;
1379 #ifdef CONFIG_BLK_DEV_IDE_PMAC_BLINK
1380 pmu_ide_blink_enabled = pmu_hd_blink_init();
1382 if (pmu_ide_blink_enabled)
1383 hwif->led_act = pmu_hd_kick_blink;
1386 printk(KERN_INFO "ide%d: Found Apple %s controller, bus ID %d%s, irq %d\n",
1387 hwif->index, model_name[pmif->kind], pmif->aapl_bus_id,
1388 pmif->mediabay ? " (mediabay)" : "", hwif->irq);
1390 #ifdef CONFIG_PMAC_MEDIABAY
1391 if (pmif->mediabay && check_media_bay_by_base(pmif->regbase, MB_CD) == 0)
1393 #endif /* CONFIG_PMAC_MEDIABAY */
1395 hwif->sg_max_nents = MAX_DCMDS;
1397 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1398 /* has a DBDMA controller channel */
1400 pmac_ide_setup_dma(pmif, hwif);
1401 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
1403 /* We probe the hwif now */
1404 probe_hwif_init(hwif);
1410 * Attach to a macio probed interface
1412 static int __devinit
1413 pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
1416 unsigned long regbase;
1419 pmac_ide_hwif_t *pmif;
1423 while (i < MAX_HWIFS && (ide_hwifs[i].io_ports[IDE_DATA_OFFSET] != 0
1424 || pmac_ide[i].node != NULL))
1426 if (i >= MAX_HWIFS) {
1427 printk(KERN_ERR "ide-pmac: MacIO interface attach with no slot\n");
1428 printk(KERN_ERR " %s\n", mdev->ofdev.node->full_name);
1432 pmif = &pmac_ide[i];
1433 hwif = &ide_hwifs[i];
1435 if (macio_resource_count(mdev) == 0) {
1436 printk(KERN_WARNING "ide%d: no address for %s\n",
1437 i, mdev->ofdev.node->full_name);
1441 /* Request memory resource for IO ports */
1442 if (macio_request_resource(mdev, 0, "ide-pmac (ports)")) {
1443 printk(KERN_ERR "ide%d: can't request mmio resource !\n", i);
1447 /* XXX This is bogus. Should be fixed in the registry by checking
1448 * the kind of host interrupt controller, a bit like gatwick
1449 * fixes in irq.c. That works well enough for the single case
1450 * where that happens though...
1452 if (macio_irq_count(mdev) == 0) {
1453 printk(KERN_WARNING "ide%d: no intrs for device %s, using 13\n",
1454 i, mdev->ofdev.node->full_name);
1457 irq = macio_irq(mdev, 0);
1459 base = ioremap(macio_resource_start(mdev, 0), 0x400);
1460 regbase = (unsigned long) base;
1462 hwif->pci_dev = mdev->bus->pdev;
1463 hwif->gendev.parent = &mdev->ofdev.dev;
1466 pmif->node = mdev->ofdev.node;
1467 pmif->regbase = regbase;
1469 pmif->kauai_fcr = NULL;
1470 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1471 if (macio_resource_count(mdev) >= 2) {
1472 if (macio_request_resource(mdev, 1, "ide-pmac (dma)"))
1473 printk(KERN_WARNING "ide%d: can't request DMA resource !\n", i);
1475 pmif->dma_regs = ioremap(macio_resource_start(mdev, 1), 0x1000);
1477 pmif->dma_regs = NULL;
1478 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
1479 dev_set_drvdata(&mdev->ofdev.dev, hwif);
1481 rc = pmac_ide_setup_device(pmif, hwif);
1483 /* The inteface is released to the common IDE layer */
1484 dev_set_drvdata(&mdev->ofdev.dev, NULL);
1487 iounmap(pmif->dma_regs);
1488 memset(pmif, 0, sizeof(*pmif));
1489 macio_release_resource(mdev, 0);
1491 macio_release_resource(mdev, 1);
1498 pmac_ide_macio_suspend(struct macio_dev *mdev, pm_message_t state)
1500 ide_hwif_t *hwif = (ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev);
1503 if (state.event != mdev->ofdev.dev.power.power_state.event && state.event >= PM_EVENT_SUSPEND) {
1504 rc = pmac_ide_do_suspend(hwif);
1506 mdev->ofdev.dev.power.power_state = state;
1513 pmac_ide_macio_resume(struct macio_dev *mdev)
1515 ide_hwif_t *hwif = (ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev);
1518 if (mdev->ofdev.dev.power.power_state.event != PM_EVENT_ON) {
1519 rc = pmac_ide_do_resume(hwif);
1521 mdev->ofdev.dev.power.power_state = PMSG_ON;
1528 * Attach to a PCI probed interface
1530 static int __devinit
1531 pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
1534 struct device_node *np;
1535 pmac_ide_hwif_t *pmif;
1537 unsigned long rbase, rlen;
1540 np = pci_device_to_OF_node(pdev);
1542 printk(KERN_ERR "ide-pmac: cannot find MacIO node for Kauai ATA interface\n");
1546 while (i < MAX_HWIFS && (ide_hwifs[i].io_ports[IDE_DATA_OFFSET] != 0
1547 || pmac_ide[i].node != NULL))
1549 if (i >= MAX_HWIFS) {
1550 printk(KERN_ERR "ide-pmac: PCI interface attach with no slot\n");
1551 printk(KERN_ERR " %s\n", np->full_name);
1555 pmif = &pmac_ide[i];
1556 hwif = &ide_hwifs[i];
1558 if (pci_enable_device(pdev)) {
1559 printk(KERN_WARNING "ide%i: Can't enable PCI device for %s\n",
1563 pci_set_master(pdev);
1565 if (pci_request_regions(pdev, "Kauai ATA")) {
1566 printk(KERN_ERR "ide%d: Cannot obtain PCI resources for %s\n",
1571 hwif->pci_dev = pdev;
1572 hwif->gendev.parent = &pdev->dev;
1576 rbase = pci_resource_start(pdev, 0);
1577 rlen = pci_resource_len(pdev, 0);
1579 base = ioremap(rbase, rlen);
1580 pmif->regbase = (unsigned long) base + 0x2000;
1581 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1582 pmif->dma_regs = base + 0x1000;
1583 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
1584 pmif->kauai_fcr = base;
1585 pmif->irq = pdev->irq;
1587 pci_set_drvdata(pdev, hwif);
1589 rc = pmac_ide_setup_device(pmif, hwif);
1591 /* The inteface is released to the common IDE layer */
1592 pci_set_drvdata(pdev, NULL);
1594 memset(pmif, 0, sizeof(*pmif));
1595 pci_release_regions(pdev);
1602 pmac_ide_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1604 ide_hwif_t *hwif = (ide_hwif_t *)pci_get_drvdata(pdev);
1607 if (state.event != pdev->dev.power.power_state.event && state.event >= 2) {
1608 rc = pmac_ide_do_suspend(hwif);
1610 pdev->dev.power.power_state = state;
1617 pmac_ide_pci_resume(struct pci_dev *pdev)
1619 ide_hwif_t *hwif = (ide_hwif_t *)pci_get_drvdata(pdev);
1622 if (pdev->dev.power.power_state.event != PM_EVENT_ON) {
1623 rc = pmac_ide_do_resume(hwif);
1625 pdev->dev.power.power_state = PMSG_ON;
1631 static struct of_device_id pmac_ide_macio_match[] =
1648 static struct macio_driver pmac_ide_macio_driver =
1651 .match_table = pmac_ide_macio_match,
1652 .probe = pmac_ide_macio_attach,
1653 .suspend = pmac_ide_macio_suspend,
1654 .resume = pmac_ide_macio_resume,
1657 static struct pci_device_id pmac_ide_pci_match[] = {
1658 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_ATA,
1659 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1660 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_IPID_ATA100,
1661 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1662 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_K2_ATA100,
1663 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1664 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_SH_ATA,
1665 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1666 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_IPID2_ATA,
1667 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1670 static struct pci_driver pmac_ide_pci_driver = {
1672 .id_table = pmac_ide_pci_match,
1673 .probe = pmac_ide_pci_attach,
1674 .suspend = pmac_ide_pci_suspend,
1675 .resume = pmac_ide_pci_resume,
1677 MODULE_DEVICE_TABLE(pci, pmac_ide_pci_match);
1680 pmac_ide_probe(void)
1682 if (!machine_is(powermac))
1685 #ifdef CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST
1686 pci_register_driver(&pmac_ide_pci_driver);
1687 macio_register_driver(&pmac_ide_macio_driver);
1689 macio_register_driver(&pmac_ide_macio_driver);
1690 pci_register_driver(&pmac_ide_pci_driver);
1694 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
1697 * pmac_ide_build_dmatable builds the DBDMA command list
1698 * for a transfer and sets the DBDMA channel to point to it.
1701 pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq)
1703 struct dbdma_cmd *table;
1705 ide_hwif_t *hwif = HWIF(drive);
1706 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1707 volatile struct dbdma_regs __iomem *dma = pmif->dma_regs;
1708 struct scatterlist *sg;
1709 int wr = (rq_data_dir(rq) == WRITE);
1711 /* DMA table is already aligned */
1712 table = (struct dbdma_cmd *) pmif->dma_table_cpu;
1714 /* Make sure DMA controller is stopped (necessary ?) */
1715 writel((RUN|PAUSE|FLUSH|WAKE|DEAD) << 16, &dma->control);
1716 while (readl(&dma->status) & RUN)
1719 hwif->sg_nents = i = ide_build_sglist(drive, rq);
1724 /* Build DBDMA commands list */
1725 sg = hwif->sg_table;
1726 while (i && sg_dma_len(sg)) {
1730 cur_addr = sg_dma_address(sg);
1731 cur_len = sg_dma_len(sg);
1733 if (pmif->broken_dma && cur_addr & (L1_CACHE_BYTES - 1)) {
1734 if (pmif->broken_dma_warn == 0) {
1735 printk(KERN_WARNING "%s: DMA on non aligned address,"
1736 "switching to PIO on Ohare chipset\n", drive->name);
1737 pmif->broken_dma_warn = 1;
1739 goto use_pio_instead;
1742 unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
1744 if (count++ >= MAX_DCMDS) {
1745 printk(KERN_WARNING "%s: DMA table too small\n",
1747 goto use_pio_instead;
1749 st_le16(&table->command, wr? OUTPUT_MORE: INPUT_MORE);
1750 st_le16(&table->req_count, tc);
1751 st_le32(&table->phy_addr, cur_addr);
1753 table->xfer_status = 0;
1754 table->res_count = 0;
1763 /* convert the last command to an input/output last command */
1765 st_le16(&table[-1].command, wr? OUTPUT_LAST: INPUT_LAST);
1766 /* add the stop command to the end of the list */
1767 memset(table, 0, sizeof(struct dbdma_cmd));
1768 st_le16(&table->command, DBDMA_STOP);
1770 writel(hwif->dmatable_dma, &dma->cmdptr);
1774 printk(KERN_DEBUG "%s: empty DMA table?\n", drive->name);
1776 pci_unmap_sg(hwif->pci_dev,
1779 hwif->sg_dma_direction);
1780 return 0; /* revert to PIO for this request */
1783 /* Teardown mappings after DMA has completed. */
1785 pmac_ide_destroy_dmatable (ide_drive_t *drive)
1787 ide_hwif_t *hwif = drive->hwif;
1788 struct pci_dev *dev = HWIF(drive)->pci_dev;
1789 struct scatterlist *sg = hwif->sg_table;
1790 int nents = hwif->sg_nents;
1793 pci_unmap_sg(dev, sg, nents, hwif->sg_dma_direction);
1799 * Pick up best MDMA timing for the drive and apply it
1802 pmac_ide_mdma_enable(ide_drive_t *drive, u16 mode)
1804 ide_hwif_t *hwif = HWIF(drive);
1805 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1806 int drive_cycle_time;
1807 struct hd_driveid *id = drive->id;
1808 u32 *timings, *timings2;
1809 u32 timing_local[2];
1812 /* which drive is it ? */
1813 timings = &pmif->timings[drive->select.b.unit & 0x01];
1814 timings2 = &pmif->timings[(drive->select.b.unit & 0x01) + 2];
1816 /* Check if drive provide explicit cycle time */
1817 if ((id->field_valid & 2) && (id->eide_dma_time))
1818 drive_cycle_time = id->eide_dma_time;
1820 drive_cycle_time = 0;
1822 /* Copy timings to local image */
1823 timing_local[0] = *timings;
1824 timing_local[1] = *timings2;
1826 /* Calculate controller timings */
1827 ret = set_timings_mdma( drive, pmif->kind,
1835 /* Set feature on drive */
1836 printk(KERN_INFO "%s: Enabling MultiWord DMA %d\n", drive->name, mode & 0xf);
1837 ret = pmac_ide_do_setfeature(drive, mode);
1839 printk(KERN_WARNING "%s: Failed !\n", drive->name);
1843 /* Apply timings to controller */
1844 *timings = timing_local[0];
1845 *timings2 = timing_local[1];
1847 /* Set speed info in drive */
1848 drive->current_speed = mode;
1849 if (!drive->init_speed)
1850 drive->init_speed = mode;
1856 * Pick up best UDMA timing for the drive and apply it
1859 pmac_ide_udma_enable(ide_drive_t *drive, u16 mode)
1861 ide_hwif_t *hwif = HWIF(drive);
1862 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1863 u32 *timings, *timings2;
1864 u32 timing_local[2];
1867 /* which drive is it ? */
1868 timings = &pmif->timings[drive->select.b.unit & 0x01];
1869 timings2 = &pmif->timings[(drive->select.b.unit & 0x01) + 2];
1871 /* Copy timings to local image */
1872 timing_local[0] = *timings;
1873 timing_local[1] = *timings2;
1875 /* Calculate timings for interface */
1876 if (pmif->kind == controller_un_ata6
1877 || pmif->kind == controller_k2_ata6)
1878 ret = set_timings_udma_ata6( &timing_local[0],
1881 else if (pmif->kind == controller_sh_ata6)
1882 ret = set_timings_udma_shasta( &timing_local[0],
1886 ret = set_timings_udma_ata4(&timing_local[0], mode);
1890 /* Set feature on drive */
1891 printk(KERN_INFO "%s: Enabling Ultra DMA %d\n", drive->name, mode & 0x0f);
1892 ret = pmac_ide_do_setfeature(drive, mode);
1894 printk(KERN_WARNING "%s: Failed !\n", drive->name);
1898 /* Apply timings to controller */
1899 *timings = timing_local[0];
1900 *timings2 = timing_local[1];
1902 /* Set speed info in drive */
1903 drive->current_speed = mode;
1904 if (!drive->init_speed)
1905 drive->init_speed = mode;
1911 * Check what is the best DMA timing setting for the drive and
1912 * call appropriate functions to apply it.
1915 pmac_ide_dma_check(ide_drive_t *drive)
1917 struct hd_driveid *id = drive->id;
1918 ide_hwif_t *hwif = HWIF(drive);
1919 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1922 drive->using_dma = 0;
1924 if (drive->media == ide_floppy)
1926 if (((id->capability & 1) == 0) && !__ide_dma_good_drive(drive))
1928 if (__ide_dma_bad_drive(drive))
1935 if (pmif->kind == controller_kl_ata4
1936 || pmif->kind == controller_un_ata6
1937 || pmif->kind == controller_k2_ata6
1938 || pmif->kind == controller_sh_ata6) {
1940 if (pmif->cable_80) {
1941 map |= XFER_UDMA_66;
1942 if (pmif->kind == controller_un_ata6 ||
1943 pmif->kind == controller_k2_ata6 ||
1944 pmif->kind == controller_sh_ata6)
1945 map |= XFER_UDMA_100;
1946 if (pmif->kind == controller_sh_ata6)
1947 map |= XFER_UDMA_133;
1950 mode = ide_find_best_mode(drive, map);
1951 if (mode & XFER_UDMA)
1952 drive->using_dma = pmac_ide_udma_enable(drive, mode);
1953 else if (mode & XFER_MWDMA)
1954 drive->using_dma = pmac_ide_mdma_enable(drive, mode);
1955 hwif->OUTB(0, IDE_CONTROL_REG);
1956 /* Apply settings to controller */
1957 pmac_ide_do_update_timings(drive);
1963 * Prepare a DMA transfer. We build the DMA table, adjust the timings for
1964 * a read on KeyLargo ATA/66 and mark us as waiting for DMA completion
1967 pmac_ide_dma_setup(ide_drive_t *drive)
1969 ide_hwif_t *hwif = HWIF(drive);
1970 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
1971 struct request *rq = HWGROUP(drive)->rq;
1972 u8 unit = (drive->select.b.unit & 0x01);
1977 ata4 = (pmif->kind == controller_kl_ata4);
1979 if (!pmac_ide_build_dmatable(drive, rq)) {
1980 ide_map_sg(drive, rq);
1984 /* Apple adds 60ns to wrDataSetup on reads */
1985 if (ata4 && (pmif->timings[unit] & TR_66_UDMA_EN)) {
1986 writel(pmif->timings[unit] + (!rq_data_dir(rq) ? 0x00800000UL : 0),
1987 PMAC_IDE_REG(IDE_TIMING_CONFIG));
1988 (void)readl(PMAC_IDE_REG(IDE_TIMING_CONFIG));
1991 drive->waiting_for_dma = 1;
1997 pmac_ide_dma_exec_cmd(ide_drive_t *drive, u8 command)
1999 /* issue cmd to drive */
2000 ide_execute_command(drive, command, &ide_dma_intr, 2*WAIT_CMD, NULL);
2004 * Kick the DMA controller into life after the DMA command has been issued
2008 pmac_ide_dma_start(ide_drive_t *drive)
2010 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
2011 volatile struct dbdma_regs __iomem *dma;
2013 dma = pmif->dma_regs;
2015 writel((RUN << 16) | RUN, &dma->control);
2016 /* Make sure it gets to the controller right now */
2017 (void)readl(&dma->control);
2021 * After a DMA transfer, make sure the controller is stopped
2024 pmac_ide_dma_end (ide_drive_t *drive)
2026 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
2027 volatile struct dbdma_regs __iomem *dma;
2032 dma = pmif->dma_regs;
2034 drive->waiting_for_dma = 0;
2035 dstat = readl(&dma->status);
2036 writel(((RUN|WAKE|DEAD) << 16), &dma->control);
2037 pmac_ide_destroy_dmatable(drive);
2038 /* verify good dma status. we don't check for ACTIVE beeing 0. We should...
2039 * in theory, but with ATAPI decices doing buffer underruns, that would
2040 * cause us to disable DMA, which isn't what we want
2042 return (dstat & (RUN|DEAD)) != RUN;
2046 * Check out that the interrupt we got was for us. We can't always know this
2047 * for sure with those Apple interfaces (well, we could on the recent ones but
2048 * that's not implemented yet), on the other hand, we don't have shared interrupts
2049 * so it's not really a problem
2052 pmac_ide_dma_test_irq (ide_drive_t *drive)
2054 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
2055 volatile struct dbdma_regs __iomem *dma;
2056 unsigned long status, timeout;
2060 dma = pmif->dma_regs;
2062 /* We have to things to deal with here:
2064 * - The dbdma won't stop if the command was started
2065 * but completed with an error without transferring all
2066 * datas. This happens when bad blocks are met during
2067 * a multi-block transfer.
2069 * - The dbdma fifo hasn't yet finished flushing to
2070 * to system memory when the disk interrupt occurs.
2074 /* If ACTIVE is cleared, the STOP command have passed and
2075 * transfer is complete.
2077 status = readl(&dma->status);
2078 if (!(status & ACTIVE))
2080 if (!drive->waiting_for_dma)
2081 printk(KERN_WARNING "ide%d, ide_dma_test_irq \
2082 called while not waiting\n", HWIF(drive)->index);
2084 /* If dbdma didn't execute the STOP command yet, the
2085 * active bit is still set. We consider that we aren't
2086 * sharing interrupts (which is hopefully the case with
2087 * those controllers) and so we just try to flush the
2088 * channel for pending data in the fifo
2091 writel((FLUSH << 16) | FLUSH, &dma->control);
2095 status = readl(&dma->status);
2096 if ((status & FLUSH) == 0)
2098 if (++timeout > 100) {
2099 printk(KERN_WARNING "ide%d, ide_dma_test_irq \
2100 timeout flushing channel\n", HWIF(drive)->index);
2108 pmac_ide_dma_host_off (ide_drive_t *drive)
2114 pmac_ide_dma_host_on (ide_drive_t *drive)
2120 pmac_ide_dma_lostirq (ide_drive_t *drive)
2122 pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data;
2123 volatile struct dbdma_regs __iomem *dma;
2124 unsigned long status;
2128 dma = pmif->dma_regs;
2130 status = readl(&dma->status);
2131 printk(KERN_ERR "ide-pmac lost interrupt, dma status: %lx\n", status);
2136 * Allocate the data structures needed for using DMA with an interface
2137 * and fill the proper list of functions pointers
2140 pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
2142 /* We won't need pci_dev if we switch to generic consistent
2145 if (hwif->pci_dev == NULL)
2148 * Allocate space for the DBDMA commands.
2149 * The +2 is +1 for the stop command and +1 to allow for
2150 * aligning the start address to a multiple of 16 bytes.
2152 pmif->dma_table_cpu = (struct dbdma_cmd*)pci_alloc_consistent(
2154 (MAX_DCMDS + 2) * sizeof(struct dbdma_cmd),
2155 &hwif->dmatable_dma);
2156 if (pmif->dma_table_cpu == NULL) {
2157 printk(KERN_ERR "%s: unable to allocate DMA command list\n",
2162 hwif->ide_dma_off_quietly = &__ide_dma_off_quietly;
2163 hwif->ide_dma_on = &__ide_dma_on;
2164 hwif->ide_dma_check = &pmac_ide_dma_check;
2165 hwif->dma_setup = &pmac_ide_dma_setup;
2166 hwif->dma_exec_cmd = &pmac_ide_dma_exec_cmd;
2167 hwif->dma_start = &pmac_ide_dma_start;
2168 hwif->ide_dma_end = &pmac_ide_dma_end;
2169 hwif->ide_dma_test_irq = &pmac_ide_dma_test_irq;
2170 hwif->ide_dma_host_off = &pmac_ide_dma_host_off;
2171 hwif->ide_dma_host_on = &pmac_ide_dma_host_on;
2172 hwif->ide_dma_timeout = &__ide_dma_timeout;
2173 hwif->ide_dma_lostirq = &pmac_ide_dma_lostirq;
2175 hwif->atapi_dma = 1;
2176 switch(pmif->kind) {
2177 case controller_sh_ata6:
2178 hwif->ultra_mask = pmif->cable_80 ? 0x7f : 0x07;
2179 hwif->mwdma_mask = 0x07;
2180 hwif->swdma_mask = 0x00;
2182 case controller_un_ata6:
2183 case controller_k2_ata6:
2184 hwif->ultra_mask = pmif->cable_80 ? 0x3f : 0x07;
2185 hwif->mwdma_mask = 0x07;
2186 hwif->swdma_mask = 0x00;
2188 case controller_kl_ata4:
2189 hwif->ultra_mask = pmif->cable_80 ? 0x1f : 0x07;
2190 hwif->mwdma_mask = 0x07;
2191 hwif->swdma_mask = 0x00;
2194 hwif->ultra_mask = 0x00;
2195 hwif->mwdma_mask = 0x07;
2196 hwif->swdma_mask = 0x00;
2201 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */