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 (id->capability & 4) {
260 * Set IORDY_EN & PREFETCH_EN (this seems to have
261 * NO real effect since this register is reloaded
262 * by hardware when the transfer mode is selected)
264 u8 tmp, adj = (drive->dn & 1) ? 0x08 : 0x00;
266 tmp = get_indexed_reg(hwif, 0x13 + adj);
267 set_indexed_reg(hwif, 0x13 + adj, tmp | 0x03);
270 speed = ide_dma_speed(drive, pdcnew_ratemask(drive));
275 (void) hwif->speedproc(drive, speed);
276 return ide_dma_enable(drive);
279 static int pdcnew_config_drive_xfer_rate(ide_drive_t *drive)
281 drive->init_speed = 0;
283 if (ide_use_dma(drive) && config_chipset_for_dma(drive))
286 if (ide_use_fast_pio(drive))
287 pdcnew_tune_drive(drive, 255);
292 static int pdcnew_quirkproc(ide_drive_t *drive)
294 const char **list, *model = drive->id->model;
296 for (list = pdc_quirk_drives; *list != NULL; list++)
297 if (strstr(model, *list) != NULL)
302 static void pdcnew_reset(ide_drive_t *drive)
305 * Deleted this because it is redundant from the caller.
307 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
308 HWIF(drive)->channel ? "Secondary" : "Primary");
312 * read_counter - Read the byte count registers
313 * @dma_base: for the port address
315 static long __devinit read_counter(u32 dma_base)
317 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
318 u8 cnt0, cnt1, cnt2, cnt3;
319 long count = 0, last;
325 /* Read the current count */
326 outb(0x20, pri_dma_base + 0x01);
327 cnt0 = inb(pri_dma_base + 0x03);
328 outb(0x21, pri_dma_base + 0x01);
329 cnt1 = inb(pri_dma_base + 0x03);
330 outb(0x20, sec_dma_base + 0x01);
331 cnt2 = inb(sec_dma_base + 0x03);
332 outb(0x21, sec_dma_base + 0x01);
333 cnt3 = inb(sec_dma_base + 0x03);
335 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
338 * The 30-bit decrementing counter is read in 4 pieces.
339 * Incorrect value may be read when the most significant bytes
342 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
344 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
345 cnt0, cnt1, cnt2, cnt3);
351 * detect_pll_input_clock - Detect the PLL input clock in Hz.
352 * @dma_base: for the port address
353 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
355 static long __devinit detect_pll_input_clock(unsigned long dma_base)
357 long start_count, end_count;
361 start_count = read_counter(dma_base);
363 /* Start the test mode */
364 outb(0x01, dma_base + 0x01);
365 scr1 = inb(dma_base + 0x03);
366 DBG("scr1[%02X]\n", scr1);
367 outb(scr1 | 0x40, dma_base + 0x03);
369 /* Let the counter run for 10 ms. */
372 end_count = read_counter(dma_base);
374 /* Stop the test mode */
375 outb(0x01, dma_base + 0x01);
376 scr1 = inb(dma_base + 0x03);
377 DBG("scr1[%02X]\n", scr1);
378 outb(scr1 & ~0x40, dma_base + 0x03);
381 * Calculate the input clock in Hz
382 * (the clock counter is 30 bit wide and counts down)
384 pll_input = ((start_count - end_count) & 0x3ffffff) * 100;
386 DBG("start[%ld] end[%ld]\n", start_count, end_count);
391 #ifdef CONFIG_PPC_PMAC
392 static void __devinit apple_kiwi_init(struct pci_dev *pdev)
394 struct device_node *np = pci_device_to_OF_node(pdev);
395 unsigned int class_rev = 0;
398 if (np == NULL || !device_is_compatible(np, "kiwi-root"))
401 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class_rev);
404 if (class_rev >= 0x03) {
405 /* Setup chip magic config stuff (from darwin) */
406 pci_read_config_byte (pdev, 0x40, &conf);
407 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
410 #endif /* CONFIG_PPC_PMAC */
412 static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const char *name)
414 unsigned long dma_base = pci_resource_start(dev, 4);
415 unsigned long sec_dma_base = dma_base + 0x08;
416 long pll_input, pll_output, ratio;
418 u8 pll_ctl0, pll_ctl1;
420 if (dev->resource[PCI_ROM_RESOURCE].start) {
421 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
422 dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
423 printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n", name,
424 (unsigned long)dev->resource[PCI_ROM_RESOURCE].start);
427 #ifdef CONFIG_PPC_PMAC
428 apple_kiwi_init(dev);
431 /* Calculate the required PLL output frequency */
432 switch(max_dma_rate(dev)) {
433 case 4: /* it's 133 MHz for Ultra133 chips */
434 pll_output = 133333333;
436 case 3: /* and 100 MHz for Ultra100 chips */
438 pll_output = 100000000;
443 * Detect PLL input clock.
444 * On some systems, where PCI bus is running at non-standard clock rate
445 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
446 * PDC20268 and newer chips employ PLL circuit to help correct timing
449 pll_input = detect_pll_input_clock(dma_base);
450 printk("%s: PLL input clock is %ld kHz\n", name, pll_input / 1000);
453 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
454 printk(KERN_ERR "%s: Bad PLL input clock %ld Hz, giving up!\n",
460 DBG("pll_output is %ld Hz\n", pll_output);
462 /* Show the current clock value of PLL control register
463 * (maybe already configured by the BIOS)
465 outb(0x02, sec_dma_base + 0x01);
466 pll_ctl0 = inb(sec_dma_base + 0x03);
467 outb(0x03, sec_dma_base + 0x01);
468 pll_ctl1 = inb(sec_dma_base + 0x03);
470 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
474 * Calculate the ratio of F, R and NO
475 * POUT = (F + 2) / (( R + 2) * NO)
477 ratio = pll_output / (pll_input / 1000);
478 if (ratio < 8600L) { /* 8.6x */
479 /* Using NO = 0x01, R = 0x0d */
481 } else if (ratio < 12900L) { /* 12.9x */
482 /* Using NO = 0x01, R = 0x08 */
484 } else if (ratio < 16100L) { /* 16.1x */
485 /* Using NO = 0x01, R = 0x06 */
487 } else if (ratio < 64000L) { /* 64x */
491 printk(KERN_ERR "%s: Bad ratio %ld, giving up!\n", name, ratio);
495 f = (ratio * (r + 2)) / 1000 - 2;
497 DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
499 if (unlikely(f < 0 || f > 127)) {
501 printk(KERN_ERR "%s: F[%d] invalid!\n", name, f);
508 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
510 outb(0x02, sec_dma_base + 0x01);
511 outb(pll_ctl0, sec_dma_base + 0x03);
512 outb(0x03, sec_dma_base + 0x01);
513 outb(pll_ctl1, sec_dma_base + 0x03);
515 /* Wait the PLL circuit to be stable */
520 * Show the current clock value of PLL control register
522 outb(0x02, sec_dma_base + 0x01);
523 pll_ctl0 = inb(sec_dma_base + 0x03);
524 outb(0x03, sec_dma_base + 0x01);
525 pll_ctl1 = inb(sec_dma_base + 0x03);
527 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
534 static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
538 hwif->tuneproc = &pdcnew_tune_drive;
539 hwif->quirkproc = &pdcnew_quirkproc;
540 hwif->speedproc = &pdcnew_tune_chipset;
541 hwif->resetproc = &pdcnew_reset;
543 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
546 hwif->ultra_mask = 0x7f;
547 hwif->mwdma_mask = 0x07;
549 hwif->err_stops_fifo = 1;
551 hwif->ide_dma_check = &pdcnew_config_drive_xfer_rate;
553 if (!hwif->udma_four)
554 hwif->udma_four = pdcnew_cable_detect(hwif) ? 0 : 1;
558 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
560 #if PDC202_DEBUG_CABLE
561 printk(KERN_DEBUG "%s: %s-pin cable\n",
562 hwif->name, hwif->udma_four ? "80" : "40");
563 #endif /* PDC202_DEBUG_CABLE */
566 static int __devinit init_setup_pdcnew(struct pci_dev *dev, ide_pci_device_t *d)
568 return ide_setup_pci_device(dev, d);
571 static int __devinit init_setup_pdc20270(struct pci_dev *dev,
574 struct pci_dev *findev = NULL;
577 if ((dev->bus->self &&
578 dev->bus->self->vendor == PCI_VENDOR_ID_DEC) &&
579 (dev->bus->self->device == PCI_DEVICE_ID_DEC_21150)) {
580 if (PCI_SLOT(dev->devfn) & 2)
583 while ((findev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, findev)) != NULL) {
584 if ((findev->vendor == dev->vendor) &&
585 (findev->device == dev->device) &&
586 (PCI_SLOT(findev->devfn) & 2)) {
587 if (findev->irq != dev->irq) {
588 findev->irq = dev->irq;
590 ret = ide_setup_pci_devices(dev, findev, d);
596 return ide_setup_pci_device(dev, d);
599 static int __devinit init_setup_pdc20276(struct pci_dev *dev,
602 if ((dev->bus->self) &&
603 (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
604 ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
605 (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
606 printk(KERN_INFO "ide: Skipping Promise PDC20276 "
607 "attached to I2O RAID controller.\n");
610 return ide_setup_pci_device(dev, d);
613 static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
616 .init_setup = init_setup_pdcnew,
617 .init_chipset = init_chipset_pdcnew,
618 .init_hwif = init_hwif_pdc202new,
621 .bootable = OFF_BOARD,
624 .init_setup = init_setup_pdcnew,
625 .init_chipset = init_chipset_pdcnew,
626 .init_hwif = init_hwif_pdc202new,
629 .bootable = OFF_BOARD,
632 .init_setup = init_setup_pdc20270,
633 .init_chipset = init_chipset_pdcnew,
634 .init_hwif = init_hwif_pdc202new,
637 .bootable = OFF_BOARD,
640 .init_setup = init_setup_pdcnew,
641 .init_chipset = init_chipset_pdcnew,
642 .init_hwif = init_hwif_pdc202new,
645 .bootable = OFF_BOARD,
648 .init_setup = init_setup_pdcnew,
649 .init_chipset = init_chipset_pdcnew,
650 .init_hwif = init_hwif_pdc202new,
653 .bootable = OFF_BOARD,
656 .init_setup = init_setup_pdc20276,
657 .init_chipset = init_chipset_pdcnew,
658 .init_hwif = init_hwif_pdc202new,
661 .bootable = OFF_BOARD,
664 .init_setup = init_setup_pdcnew,
665 .init_chipset = init_chipset_pdcnew,
666 .init_hwif = init_hwif_pdc202new,
669 .bootable = OFF_BOARD,
674 * pdc202new_init_one - called when a pdc202xx is found
675 * @dev: the pdc202new device
676 * @id: the matching pci id
678 * Called when the PCI registration layer (or the IDE initialization)
679 * finds a device matching our IDE device tables.
682 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
684 ide_pci_device_t *d = &pdcnew_chipsets[id->driver_data];
686 return d->init_setup(dev, d);
689 static struct pci_device_id pdc202new_pci_tbl[] = {
690 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
691 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20269, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
692 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20270, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
693 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20271, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
694 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20275, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
695 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20276, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
696 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20277, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6},
699 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
701 static struct pci_driver driver = {
702 .name = "Promise_IDE",
703 .id_table = pdc202new_pci_tbl,
704 .probe = pdc202new_init_one,
707 static int __init pdc202new_ide_init(void)
709 return ide_pci_register_driver(&driver);
712 module_init(pdc202new_ide_init);
714 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
715 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
716 MODULE_LICENSE("GPL");