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 drive->init_speed = 0;
286 if (ide_use_dma(drive) && config_chipset_for_dma(drive))
289 if (ide_use_fast_pio(drive))
290 pdcnew_tune_drive(drive, 255);
295 static int pdcnew_quirkproc(ide_drive_t *drive)
297 const char **list, *model = drive->id->model;
299 for (list = pdc_quirk_drives; *list != NULL; list++)
300 if (strstr(model, *list) != NULL)
305 static void pdcnew_reset(ide_drive_t *drive)
308 * Deleted this because it is redundant from the caller.
310 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
311 HWIF(drive)->channel ? "Secondary" : "Primary");
315 * read_counter - Read the byte count registers
316 * @dma_base: for the port address
318 static long __devinit read_counter(u32 dma_base)
320 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
321 u8 cnt0, cnt1, cnt2, cnt3;
322 long count = 0, last;
328 /* Read the current count */
329 outb(0x20, pri_dma_base + 0x01);
330 cnt0 = inb(pri_dma_base + 0x03);
331 outb(0x21, pri_dma_base + 0x01);
332 cnt1 = inb(pri_dma_base + 0x03);
333 outb(0x20, sec_dma_base + 0x01);
334 cnt2 = inb(sec_dma_base + 0x03);
335 outb(0x21, sec_dma_base + 0x01);
336 cnt3 = inb(sec_dma_base + 0x03);
338 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
341 * The 30-bit decrementing counter is read in 4 pieces.
342 * Incorrect value may be read when the most significant bytes
345 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
347 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
348 cnt0, cnt1, cnt2, cnt3);
354 * detect_pll_input_clock - Detect the PLL input clock in Hz.
355 * @dma_base: for the port address
356 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
358 static long __devinit detect_pll_input_clock(unsigned long dma_base)
360 long start_count, end_count;
364 start_count = read_counter(dma_base);
366 /* Start the test mode */
367 outb(0x01, dma_base + 0x01);
368 scr1 = inb(dma_base + 0x03);
369 DBG("scr1[%02X]\n", scr1);
370 outb(scr1 | 0x40, dma_base + 0x03);
372 /* Let the counter run for 10 ms. */
375 end_count = read_counter(dma_base);
377 /* Stop the test mode */
378 outb(0x01, dma_base + 0x01);
379 scr1 = inb(dma_base + 0x03);
380 DBG("scr1[%02X]\n", scr1);
381 outb(scr1 & ~0x40, dma_base + 0x03);
384 * Calculate the input clock in Hz
385 * (the clock counter is 30 bit wide and counts down)
387 pll_input = ((start_count - end_count) & 0x3ffffff) * 100;
389 DBG("start[%ld] end[%ld]\n", start_count, end_count);
394 #ifdef CONFIG_PPC_PMAC
395 static void __devinit apple_kiwi_init(struct pci_dev *pdev)
397 struct device_node *np = pci_device_to_OF_node(pdev);
398 unsigned int class_rev = 0;
401 if (np == NULL || !device_is_compatible(np, "kiwi-root"))
404 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class_rev);
407 if (class_rev >= 0x03) {
408 /* Setup chip magic config stuff (from darwin) */
409 pci_read_config_byte (pdev, 0x40, &conf);
410 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
413 #endif /* CONFIG_PPC_PMAC */
415 static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const char *name)
417 unsigned long dma_base = pci_resource_start(dev, 4);
418 unsigned long sec_dma_base = dma_base + 0x08;
419 long pll_input, pll_output, ratio;
421 u8 pll_ctl0, pll_ctl1;
423 if (dev->resource[PCI_ROM_RESOURCE].start) {
424 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
425 dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
426 printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n", name,
427 (unsigned long)dev->resource[PCI_ROM_RESOURCE].start);
430 #ifdef CONFIG_PPC_PMAC
431 apple_kiwi_init(dev);
434 /* Calculate the required PLL output frequency */
435 switch(max_dma_rate(dev)) {
436 case 4: /* it's 133 MHz for Ultra133 chips */
437 pll_output = 133333333;
439 case 3: /* and 100 MHz for Ultra100 chips */
441 pll_output = 100000000;
446 * Detect PLL input clock.
447 * On some systems, where PCI bus is running at non-standard clock rate
448 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
449 * PDC20268 and newer chips employ PLL circuit to help correct timing
452 pll_input = detect_pll_input_clock(dma_base);
453 printk("%s: PLL input clock is %ld kHz\n", name, pll_input / 1000);
456 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
457 printk(KERN_ERR "%s: Bad PLL input clock %ld Hz, giving up!\n",
463 DBG("pll_output is %ld Hz\n", pll_output);
465 /* Show the current clock value of PLL control register
466 * (maybe already configured by the BIOS)
468 outb(0x02, sec_dma_base + 0x01);
469 pll_ctl0 = inb(sec_dma_base + 0x03);
470 outb(0x03, sec_dma_base + 0x01);
471 pll_ctl1 = inb(sec_dma_base + 0x03);
473 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
477 * Calculate the ratio of F, R and NO
478 * POUT = (F + 2) / (( R + 2) * NO)
480 ratio = pll_output / (pll_input / 1000);
481 if (ratio < 8600L) { /* 8.6x */
482 /* Using NO = 0x01, R = 0x0d */
484 } else if (ratio < 12900L) { /* 12.9x */
485 /* Using NO = 0x01, R = 0x08 */
487 } else if (ratio < 16100L) { /* 16.1x */
488 /* Using NO = 0x01, R = 0x06 */
490 } else if (ratio < 64000L) { /* 64x */
494 printk(KERN_ERR "%s: Bad ratio %ld, giving up!\n", name, ratio);
498 f = (ratio * (r + 2)) / 1000 - 2;
500 DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
502 if (unlikely(f < 0 || f > 127)) {
504 printk(KERN_ERR "%s: F[%d] invalid!\n", name, f);
511 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
513 outb(0x02, sec_dma_base + 0x01);
514 outb(pll_ctl0, sec_dma_base + 0x03);
515 outb(0x03, sec_dma_base + 0x01);
516 outb(pll_ctl1, sec_dma_base + 0x03);
518 /* Wait the PLL circuit to be stable */
523 * Show the current clock value of PLL control register
525 outb(0x02, sec_dma_base + 0x01);
526 pll_ctl0 = inb(sec_dma_base + 0x03);
527 outb(0x03, sec_dma_base + 0x01);
528 pll_ctl1 = inb(sec_dma_base + 0x03);
530 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
537 static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
541 hwif->tuneproc = &pdcnew_tune_drive;
542 hwif->quirkproc = &pdcnew_quirkproc;
543 hwif->speedproc = &pdcnew_tune_chipset;
544 hwif->resetproc = &pdcnew_reset;
546 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
548 hwif->ultra_mask = 0x7f;
549 hwif->mwdma_mask = 0x07;
551 hwif->err_stops_fifo = 1;
553 hwif->ide_dma_check = &pdcnew_config_drive_xfer_rate;
555 if (!hwif->udma_four)
556 hwif->udma_four = pdcnew_cable_detect(hwif) ? 0 : 1;
560 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
562 #if PDC202_DEBUG_CABLE
563 printk(KERN_DEBUG "%s: %s-pin cable\n",
564 hwif->name, hwif->udma_four ? "80" : "40");
565 #endif /* PDC202_DEBUG_CABLE */
568 static int __devinit init_setup_pdcnew(struct pci_dev *dev, ide_pci_device_t *d)
570 return ide_setup_pci_device(dev, d);
573 static int __devinit init_setup_pdc20270(struct pci_dev *dev,
576 struct pci_dev *findev = NULL;
579 if ((dev->bus->self &&
580 dev->bus->self->vendor == PCI_VENDOR_ID_DEC) &&
581 (dev->bus->self->device == PCI_DEVICE_ID_DEC_21150)) {
582 if (PCI_SLOT(dev->devfn) & 2)
585 while ((findev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, findev)) != NULL) {
586 if ((findev->vendor == dev->vendor) &&
587 (findev->device == dev->device) &&
588 (PCI_SLOT(findev->devfn) & 2)) {
589 if (findev->irq != dev->irq) {
590 findev->irq = dev->irq;
592 ret = ide_setup_pci_devices(dev, findev, d);
598 return ide_setup_pci_device(dev, d);
601 static int __devinit init_setup_pdc20276(struct pci_dev *dev,
604 if ((dev->bus->self) &&
605 (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
606 ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
607 (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
608 printk(KERN_INFO "ide: Skipping Promise PDC20276 "
609 "attached to I2O RAID controller.\n");
612 return ide_setup_pci_device(dev, d);
615 static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
618 .init_setup = init_setup_pdcnew,
619 .init_chipset = init_chipset_pdcnew,
620 .init_hwif = init_hwif_pdc202new,
623 .bootable = OFF_BOARD,
626 .init_setup = init_setup_pdcnew,
627 .init_chipset = init_chipset_pdcnew,
628 .init_hwif = init_hwif_pdc202new,
631 .bootable = OFF_BOARD,
634 .init_setup = init_setup_pdc20270,
635 .init_chipset = init_chipset_pdcnew,
636 .init_hwif = init_hwif_pdc202new,
639 .bootable = OFF_BOARD,
642 .init_setup = init_setup_pdcnew,
643 .init_chipset = init_chipset_pdcnew,
644 .init_hwif = init_hwif_pdc202new,
647 .bootable = OFF_BOARD,
650 .init_setup = init_setup_pdcnew,
651 .init_chipset = init_chipset_pdcnew,
652 .init_hwif = init_hwif_pdc202new,
655 .bootable = OFF_BOARD,
658 .init_setup = init_setup_pdc20276,
659 .init_chipset = init_chipset_pdcnew,
660 .init_hwif = init_hwif_pdc202new,
663 .bootable = OFF_BOARD,
666 .init_setup = init_setup_pdcnew,
667 .init_chipset = init_chipset_pdcnew,
668 .init_hwif = init_hwif_pdc202new,
671 .bootable = OFF_BOARD,
676 * pdc202new_init_one - called when a pdc202xx is found
677 * @dev: the pdc202new device
678 * @id: the matching pci id
680 * Called when the PCI registration layer (or the IDE initialization)
681 * finds a device matching our IDE device tables.
684 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
686 ide_pci_device_t *d = &pdcnew_chipsets[id->driver_data];
688 return d->init_setup(dev, d);
691 static struct pci_device_id pdc202new_pci_tbl[] = {
692 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
693 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20269, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
694 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20270, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
695 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20271, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
696 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20275, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
697 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20276, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
698 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20277, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6},
701 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
703 static struct pci_driver driver = {
704 .name = "Promise_IDE",
705 .id_table = pdc202new_pci_tbl,
706 .probe = pdc202new_init_one,
709 static int __init pdc202new_ide_init(void)
711 return ide_pci_register_driver(&driver);
714 module_init(pdc202new_ide_init);
716 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
717 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
718 MODULE_LICENSE("GPL");