2 * Promise TX2/TX4/TX2000/133 IDE driver
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
10 * linux/drivers/ide/pdc202xx.c Version 0.35 Mar. 30, 2002
11 * Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>
12 * Copyright (C) 2005-2006 MontaVista Software, Inc.
13 * Portions Copyright (C) 1999 Promise Technology, Inc.
14 * Author: Frank Tiernan (frankt@promise.com)
15 * Released under terms of General Public License
18 #include <linux/module.h>
19 #include <linux/types.h>
20 #include <linux/kernel.h>
21 #include <linux/delay.h>
22 #include <linux/timer.h>
24 #include <linux/ioport.h>
25 #include <linux/blkdev.h>
26 #include <linux/hdreg.h>
27 #include <linux/interrupt.h>
28 #include <linux/pci.h>
29 #include <linux/init.h>
30 #include <linux/ide.h>
35 #ifdef CONFIG_PPC_PMAC
37 #include <asm/pci-bridge.h>
40 #define PDC202_DEBUG_CABLE 0
45 #define DBG(fmt, args...) printk("%s: " fmt, __FUNCTION__, ## args)
47 #define DBG(fmt, args...)
50 static const char *pdc_quirk_drives[] = {
51 "QUANTUM FIREBALLlct08 08",
52 "QUANTUM FIREBALLP KA6.4",
53 "QUANTUM FIREBALLP KA9.1",
54 "QUANTUM FIREBALLP LM20.4",
55 "QUANTUM FIREBALLP KX13.6",
56 "QUANTUM FIREBALLP KX20.5",
57 "QUANTUM FIREBALLP KX27.3",
58 "QUANTUM FIREBALLP LM20.5",
62 static u8 max_dma_rate(struct pci_dev *pdev)
66 switch(pdev->device) {
67 case PCI_DEVICE_ID_PROMISE_20277:
68 case PCI_DEVICE_ID_PROMISE_20276:
69 case PCI_DEVICE_ID_PROMISE_20275:
70 case PCI_DEVICE_ID_PROMISE_20271:
71 case PCI_DEVICE_ID_PROMISE_20269:
74 case PCI_DEVICE_ID_PROMISE_20270:
75 case PCI_DEVICE_ID_PROMISE_20268:
85 static u8 pdcnew_ratemask(ide_drive_t *drive)
87 u8 mode = max_dma_rate(HWIF(drive)->pci_dev);
89 if (!eighty_ninty_three(drive))
90 mode = min_t(u8, mode, 1);
96 * get_indexed_reg - Get indexed register
97 * @hwif: for the port address
98 * @index: index of the indexed register
100 static u8 get_indexed_reg(ide_hwif_t *hwif, u8 index)
104 outb(index, hwif->dma_vendor1);
105 value = inb(hwif->dma_vendor3);
107 DBG("index[%02X] value[%02X]\n", index, value);
112 * set_indexed_reg - Set indexed register
113 * @hwif: for the port address
114 * @index: index of the indexed register
116 static void set_indexed_reg(ide_hwif_t *hwif, u8 index, u8 value)
118 outb(index, hwif->dma_vendor1);
119 outb(value, hwif->dma_vendor3);
120 DBG("index[%02X] value[%02X]\n", index, value);
124 * ATA Timing Tables based on 133 MHz PLL output clock.
126 * If the PLL outputs 100 MHz clock, the ASIC hardware will set
127 * the timing registers automatically when "set features" command is
128 * issued to the device. However, if the PLL output clock is 133 MHz,
129 * the following tables must be used.
131 static struct pio_timing {
132 u8 reg0c, reg0d, reg13;
134 { 0xfb, 0x2b, 0xac }, /* PIO mode 0, IORDY off, Prefetch off */
135 { 0x46, 0x29, 0xa4 }, /* PIO mode 1, IORDY off, Prefetch off */
136 { 0x23, 0x26, 0x64 }, /* PIO mode 2, IORDY off, Prefetch off */
137 { 0x27, 0x0d, 0x35 }, /* PIO mode 3, IORDY on, Prefetch off */
138 { 0x23, 0x09, 0x25 }, /* PIO mode 4, IORDY on, Prefetch off */
141 static struct mwdma_timing {
143 } mwdma_timings [] = {
144 { 0xdf, 0x5f }, /* MWDMA mode 0 */
145 { 0x6b, 0x27 }, /* MWDMA mode 1 */
146 { 0x69, 0x25 }, /* MWDMA mode 2 */
149 static struct udma_timing {
150 u8 reg10, reg11, reg12;
151 } udma_timings [] = {
152 { 0x4a, 0x0f, 0xd5 }, /* UDMA mode 0 */
153 { 0x3a, 0x0a, 0xd0 }, /* UDMA mode 1 */
154 { 0x2a, 0x07, 0xcd }, /* UDMA mode 2 */
155 { 0x1a, 0x05, 0xcd }, /* UDMA mode 3 */
156 { 0x1a, 0x03, 0xcd }, /* UDMA mode 4 */
157 { 0x1a, 0x02, 0xcb }, /* UDMA mode 5 */
158 { 0x1a, 0x01, 0xcb }, /* UDMA mode 6 */
161 static int pdcnew_tune_chipset(ide_drive_t *drive, u8 speed)
163 ide_hwif_t *hwif = HWIF(drive);
164 u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
167 speed = ide_rate_filter(pdcnew_ratemask(drive), speed);
170 * Issue SETFEATURES_XFER to the drive first. PDC202xx hardware will
171 * automatically set the timing registers based on 100 MHz PLL output.
173 err = ide_config_drive_speed(drive, speed);
176 * As we set up the PLL to output 133 MHz for UltraDMA/133 capable
177 * chips, we must override the default register settings...
179 if (max_dma_rate(hwif->pci_dev) == 4) {
180 u8 mode = speed & 0x07;
190 set_indexed_reg(hwif, 0x10 + adj,
191 udma_timings[mode].reg10);
192 set_indexed_reg(hwif, 0x11 + adj,
193 udma_timings[mode].reg11);
194 set_indexed_reg(hwif, 0x12 + adj,
195 udma_timings[mode].reg12);
201 set_indexed_reg(hwif, 0x0e + adj,
202 mwdma_timings[mode].reg0e);
203 set_indexed_reg(hwif, 0x0f + adj,
204 mwdma_timings[mode].reg0f);
211 set_indexed_reg(hwif, 0x0c + adj,
212 pio_timings[mode].reg0c);
213 set_indexed_reg(hwif, 0x0d + adj,
214 pio_timings[mode].reg0d);
215 set_indexed_reg(hwif, 0x13 + adj,
216 pio_timings[mode].reg13);
219 printk(KERN_ERR "pdc202xx_new: "
220 "Unknown speed %d ignored\n", speed);
222 } else if (speed == XFER_UDMA_2) {
223 /* Set tHOLD bit to 0 if using UDMA mode 2 */
224 u8 tmp = get_indexed_reg(hwif, 0x10 + adj);
226 set_indexed_reg(hwif, 0x10 + adj, tmp & 0x7f);
232 static void pdcnew_tune_drive(ide_drive_t *drive, u8 pio)
234 pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
235 (void)pdcnew_tune_chipset(drive, XFER_PIO_0 + pio);
238 static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
240 return get_indexed_reg(hwif, 0x0b) & 0x04;
243 static int config_chipset_for_dma(ide_drive_t *drive)
245 struct hd_driveid *id = drive->id;
246 ide_hwif_t *hwif = HWIF(drive);
247 u8 ultra_66 = (id->dma_ultra & 0x0078) ? 1 : 0;
248 u8 cable = pdcnew_cable_detect(hwif);
251 if (ultra_66 && cable) {
252 printk(KERN_WARNING "Warning: %s channel "
253 "requires an 80-pin cable for operation.\n",
254 hwif->channel ? "Secondary" : "Primary");
255 printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
258 if (drive->media != ide_disk)
261 if (id->capability & 4) {
263 * Set IORDY_EN & PREFETCH_EN (this seems to have
264 * NO real effect since this register is reloaded
265 * by hardware when the transfer mode is selected)
267 u8 tmp, adj = (drive->dn & 1) ? 0x08 : 0x00;
269 tmp = get_indexed_reg(hwif, 0x13 + adj);
270 set_indexed_reg(hwif, 0x13 + adj, tmp | 0x03);
273 speed = ide_dma_speed(drive, pdcnew_ratemask(drive));
278 (void) hwif->speedproc(drive, speed);
279 return ide_dma_enable(drive);
282 static int pdcnew_config_drive_xfer_rate(ide_drive_t *drive)
284 ide_hwif_t *hwif = HWIF(drive);
286 drive->init_speed = 0;
288 if (ide_use_dma(drive) && config_chipset_for_dma(drive))
289 return hwif->ide_dma_on(drive);
291 if (ide_use_fast_pio(drive))
292 hwif->tuneproc(drive, 255);
294 return hwif->ide_dma_off_quietly(drive);
297 static int pdcnew_quirkproc(ide_drive_t *drive)
299 const char **list, *model = drive->id->model;
301 for (list = pdc_quirk_drives; *list != NULL; list++)
302 if (strstr(model, *list) != NULL)
307 static void pdcnew_reset(ide_drive_t *drive)
310 * Deleted this because it is redundant from the caller.
312 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
313 HWIF(drive)->channel ? "Secondary" : "Primary");
317 * read_counter - Read the byte count registers
318 * @dma_base: for the port address
320 static long __devinit read_counter(u32 dma_base)
322 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
323 u8 cnt0, cnt1, cnt2, cnt3;
324 long count = 0, last;
330 /* Read the current count */
331 outb(0x20, pri_dma_base + 0x01);
332 cnt0 = inb(pri_dma_base + 0x03);
333 outb(0x21, pri_dma_base + 0x01);
334 cnt1 = inb(pri_dma_base + 0x03);
335 outb(0x20, sec_dma_base + 0x01);
336 cnt2 = inb(sec_dma_base + 0x03);
337 outb(0x21, sec_dma_base + 0x01);
338 cnt3 = inb(sec_dma_base + 0x03);
340 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
343 * The 30-bit decrementing counter is read in 4 pieces.
344 * Incorrect value may be read when the most significant bytes
347 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
349 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
350 cnt0, cnt1, cnt2, cnt3);
356 * detect_pll_input_clock - Detect the PLL input clock in Hz.
357 * @dma_base: for the port address
358 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
360 static long __devinit detect_pll_input_clock(unsigned long dma_base)
362 long start_count, end_count;
366 start_count = read_counter(dma_base);
368 /* Start the test mode */
369 outb(0x01, dma_base + 0x01);
370 scr1 = inb(dma_base + 0x03);
371 DBG("scr1[%02X]\n", scr1);
372 outb(scr1 | 0x40, dma_base + 0x03);
374 /* Let the counter run for 10 ms. */
377 end_count = read_counter(dma_base);
379 /* Stop the test mode */
380 outb(0x01, dma_base + 0x01);
381 scr1 = inb(dma_base + 0x03);
382 DBG("scr1[%02X]\n", scr1);
383 outb(scr1 & ~0x40, dma_base + 0x03);
386 * Calculate the input clock in Hz
387 * (the clock counter is 30 bit wide and counts down)
389 pll_input = ((start_count - end_count) & 0x3ffffff) * 100;
391 DBG("start[%ld] end[%ld]\n", start_count, end_count);
396 #ifdef CONFIG_PPC_PMAC
397 static void __devinit apple_kiwi_init(struct pci_dev *pdev)
399 struct device_node *np = pci_device_to_OF_node(pdev);
400 unsigned int class_rev = 0;
403 if (np == NULL || !device_is_compatible(np, "kiwi-root"))
406 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class_rev);
409 if (class_rev >= 0x03) {
410 /* Setup chip magic config stuff (from darwin) */
411 pci_read_config_byte (pdev, 0x40, &conf);
412 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
415 #endif /* CONFIG_PPC_PMAC */
417 static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const char *name)
419 unsigned long dma_base = pci_resource_start(dev, 4);
420 unsigned long sec_dma_base = dma_base + 0x08;
421 long pll_input, pll_output, ratio;
423 u8 pll_ctl0, pll_ctl1;
425 if (dev->resource[PCI_ROM_RESOURCE].start) {
426 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
427 dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
428 printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n", name,
429 (unsigned long)dev->resource[PCI_ROM_RESOURCE].start);
432 #ifdef CONFIG_PPC_PMAC
433 apple_kiwi_init(dev);
436 /* Calculate the required PLL output frequency */
437 switch(max_dma_rate(dev)) {
438 case 4: /* it's 133 MHz for Ultra133 chips */
439 pll_output = 133333333;
441 case 3: /* and 100 MHz for Ultra100 chips */
443 pll_output = 100000000;
448 * Detect PLL input clock.
449 * On some systems, where PCI bus is running at non-standard clock rate
450 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
451 * PDC20268 and newer chips employ PLL circuit to help correct timing
454 pll_input = detect_pll_input_clock(dma_base);
455 printk("%s: PLL input clock is %ld kHz\n", name, pll_input / 1000);
458 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
459 printk(KERN_ERR "%s: Bad PLL input clock %ld Hz, giving up!\n",
465 DBG("pll_output is %ld Hz\n", pll_output);
467 /* Show the current clock value of PLL control register
468 * (maybe already configured by the BIOS)
470 outb(0x02, sec_dma_base + 0x01);
471 pll_ctl0 = inb(sec_dma_base + 0x03);
472 outb(0x03, sec_dma_base + 0x01);
473 pll_ctl1 = inb(sec_dma_base + 0x03);
475 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
479 * Calculate the ratio of F, R and NO
480 * POUT = (F + 2) / (( R + 2) * NO)
482 ratio = pll_output / (pll_input / 1000);
483 if (ratio < 8600L) { /* 8.6x */
484 /* Using NO = 0x01, R = 0x0d */
486 } else if (ratio < 12900L) { /* 12.9x */
487 /* Using NO = 0x01, R = 0x08 */
489 } else if (ratio < 16100L) { /* 16.1x */
490 /* Using NO = 0x01, R = 0x06 */
492 } else if (ratio < 64000L) { /* 64x */
496 printk(KERN_ERR "%s: Bad ratio %ld, giving up!\n", name, ratio);
500 f = (ratio * (r + 2)) / 1000 - 2;
502 DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
504 if (unlikely(f < 0 || f > 127)) {
506 printk(KERN_ERR "%s: F[%d] invalid!\n", name, f);
513 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
515 outb(0x02, sec_dma_base + 0x01);
516 outb(pll_ctl0, sec_dma_base + 0x03);
517 outb(0x03, sec_dma_base + 0x01);
518 outb(pll_ctl1, sec_dma_base + 0x03);
520 /* Wait the PLL circuit to be stable */
525 * Show the current clock value of PLL control register
527 outb(0x02, sec_dma_base + 0x01);
528 pll_ctl0 = inb(sec_dma_base + 0x03);
529 outb(0x03, sec_dma_base + 0x01);
530 pll_ctl1 = inb(sec_dma_base + 0x03);
532 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
539 static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
543 hwif->tuneproc = &pdcnew_tune_drive;
544 hwif->quirkproc = &pdcnew_quirkproc;
545 hwif->speedproc = &pdcnew_tune_chipset;
546 hwif->resetproc = &pdcnew_reset;
548 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
550 hwif->ultra_mask = 0x7f;
551 hwif->mwdma_mask = 0x07;
553 hwif->err_stops_fifo = 1;
555 hwif->ide_dma_check = &pdcnew_config_drive_xfer_rate;
557 if (!hwif->udma_four)
558 hwif->udma_four = pdcnew_cable_detect(hwif) ? 0 : 1;
562 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
564 #if PDC202_DEBUG_CABLE
565 printk(KERN_DEBUG "%s: %s-pin cable\n",
566 hwif->name, hwif->udma_four ? "80" : "40");
567 #endif /* PDC202_DEBUG_CABLE */
570 static int __devinit init_setup_pdcnew(struct pci_dev *dev, ide_pci_device_t *d)
572 return ide_setup_pci_device(dev, d);
575 static int __devinit init_setup_pdc20270(struct pci_dev *dev,
578 struct pci_dev *findev = NULL;
581 if ((dev->bus->self &&
582 dev->bus->self->vendor == PCI_VENDOR_ID_DEC) &&
583 (dev->bus->self->device == PCI_DEVICE_ID_DEC_21150)) {
584 if (PCI_SLOT(dev->devfn) & 2)
587 while ((findev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, findev)) != NULL) {
588 if ((findev->vendor == dev->vendor) &&
589 (findev->device == dev->device) &&
590 (PCI_SLOT(findev->devfn) & 2)) {
591 if (findev->irq != dev->irq) {
592 findev->irq = dev->irq;
594 ret = ide_setup_pci_devices(dev, findev, d);
600 return ide_setup_pci_device(dev, d);
603 static int __devinit init_setup_pdc20276(struct pci_dev *dev,
606 if ((dev->bus->self) &&
607 (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
608 ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
609 (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
610 printk(KERN_INFO "ide: Skipping Promise PDC20276 "
611 "attached to I2O RAID controller.\n");
614 return ide_setup_pci_device(dev, d);
617 static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
620 .init_setup = init_setup_pdcnew,
621 .init_chipset = init_chipset_pdcnew,
622 .init_hwif = init_hwif_pdc202new,
625 .bootable = OFF_BOARD,
628 .init_setup = init_setup_pdcnew,
629 .init_chipset = init_chipset_pdcnew,
630 .init_hwif = init_hwif_pdc202new,
633 .bootable = OFF_BOARD,
636 .init_setup = init_setup_pdc20270,
637 .init_chipset = init_chipset_pdcnew,
638 .init_hwif = init_hwif_pdc202new,
641 .bootable = OFF_BOARD,
644 .init_setup = init_setup_pdcnew,
645 .init_chipset = init_chipset_pdcnew,
646 .init_hwif = init_hwif_pdc202new,
649 .bootable = OFF_BOARD,
652 .init_setup = init_setup_pdcnew,
653 .init_chipset = init_chipset_pdcnew,
654 .init_hwif = init_hwif_pdc202new,
657 .bootable = OFF_BOARD,
660 .init_setup = init_setup_pdc20276,
661 .init_chipset = init_chipset_pdcnew,
662 .init_hwif = init_hwif_pdc202new,
665 .bootable = OFF_BOARD,
668 .init_setup = init_setup_pdcnew,
669 .init_chipset = init_chipset_pdcnew,
670 .init_hwif = init_hwif_pdc202new,
673 .bootable = OFF_BOARD,
678 * pdc202new_init_one - called when a pdc202xx is found
679 * @dev: the pdc202new device
680 * @id: the matching pci id
682 * Called when the PCI registration layer (or the IDE initialization)
683 * finds a device matching our IDE device tables.
686 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
688 ide_pci_device_t *d = &pdcnew_chipsets[id->driver_data];
690 return d->init_setup(dev, d);
693 static struct pci_device_id pdc202new_pci_tbl[] = {
694 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
695 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20269, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
696 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20270, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
697 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20271, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
698 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20275, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
699 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20276, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
700 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20277, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6},
703 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
705 static struct pci_driver driver = {
706 .name = "Promise_IDE",
707 .id_table = pdc202new_pci_tbl,
708 .probe = pdc202new_init_one,
711 static int __init pdc202new_ide_init(void)
713 return ide_pci_register_driver(&driver);
716 module_init(pdc202new_ide_init);
718 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
719 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
720 MODULE_LICENSE("GPL");