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) 2005-2007 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>
43 #define DBG(fmt, args...) printk("%s: " fmt, __FUNCTION__, ## args)
45 #define DBG(fmt, args...)
48 static const char *pdc_quirk_drives[] = {
49 "QUANTUM FIREBALLlct08 08",
50 "QUANTUM FIREBALLP KA6.4",
51 "QUANTUM FIREBALLP KA9.1",
52 "QUANTUM FIREBALLP LM20.4",
53 "QUANTUM FIREBALLP KX13.6",
54 "QUANTUM FIREBALLP KX20.5",
55 "QUANTUM FIREBALLP KX27.3",
56 "QUANTUM FIREBALLP LM20.5",
60 static u8 max_dma_rate(struct pci_dev *pdev)
64 switch(pdev->device) {
65 case PCI_DEVICE_ID_PROMISE_20277:
66 case PCI_DEVICE_ID_PROMISE_20276:
67 case PCI_DEVICE_ID_PROMISE_20275:
68 case PCI_DEVICE_ID_PROMISE_20271:
69 case PCI_DEVICE_ID_PROMISE_20269:
72 case PCI_DEVICE_ID_PROMISE_20270:
73 case PCI_DEVICE_ID_PROMISE_20268:
84 * get_indexed_reg - Get indexed register
85 * @hwif: for the port address
86 * @index: index of the indexed register
88 static u8 get_indexed_reg(ide_hwif_t *hwif, u8 index)
92 outb(index, hwif->dma_vendor1);
93 value = inb(hwif->dma_vendor3);
95 DBG("index[%02X] value[%02X]\n", index, value);
100 * set_indexed_reg - Set indexed register
101 * @hwif: for the port address
102 * @index: index of the indexed register
104 static void set_indexed_reg(ide_hwif_t *hwif, u8 index, u8 value)
106 outb(index, hwif->dma_vendor1);
107 outb(value, hwif->dma_vendor3);
108 DBG("index[%02X] value[%02X]\n", index, value);
112 * ATA Timing Tables based on 133 MHz PLL output clock.
114 * If the PLL outputs 100 MHz clock, the ASIC hardware will set
115 * the timing registers automatically when "set features" command is
116 * issued to the device. However, if the PLL output clock is 133 MHz,
117 * the following tables must be used.
119 static struct pio_timing {
120 u8 reg0c, reg0d, reg13;
122 { 0xfb, 0x2b, 0xac }, /* PIO mode 0, IORDY off, Prefetch off */
123 { 0x46, 0x29, 0xa4 }, /* PIO mode 1, IORDY off, Prefetch off */
124 { 0x23, 0x26, 0x64 }, /* PIO mode 2, IORDY off, Prefetch off */
125 { 0x27, 0x0d, 0x35 }, /* PIO mode 3, IORDY on, Prefetch off */
126 { 0x23, 0x09, 0x25 }, /* PIO mode 4, IORDY on, Prefetch off */
129 static struct mwdma_timing {
131 } mwdma_timings [] = {
132 { 0xdf, 0x5f }, /* MWDMA mode 0 */
133 { 0x6b, 0x27 }, /* MWDMA mode 1 */
134 { 0x69, 0x25 }, /* MWDMA mode 2 */
137 static struct udma_timing {
138 u8 reg10, reg11, reg12;
139 } udma_timings [] = {
140 { 0x4a, 0x0f, 0xd5 }, /* UDMA mode 0 */
141 { 0x3a, 0x0a, 0xd0 }, /* UDMA mode 1 */
142 { 0x2a, 0x07, 0xcd }, /* UDMA mode 2 */
143 { 0x1a, 0x05, 0xcd }, /* UDMA mode 3 */
144 { 0x1a, 0x03, 0xcd }, /* UDMA mode 4 */
145 { 0x1a, 0x02, 0xcb }, /* UDMA mode 5 */
146 { 0x1a, 0x01, 0xcb }, /* UDMA mode 6 */
149 static int pdcnew_tune_chipset(ide_drive_t *drive, u8 speed)
151 ide_hwif_t *hwif = HWIF(drive);
152 u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
155 speed = ide_rate_filter(drive, speed);
158 * Issue SETFEATURES_XFER to the drive first. PDC202xx hardware will
159 * automatically set the timing registers based on 100 MHz PLL output.
161 err = ide_config_drive_speed(drive, speed);
164 * As we set up the PLL to output 133 MHz for UltraDMA/133 capable
165 * chips, we must override the default register settings...
167 if (max_dma_rate(hwif->pci_dev) == 4) {
168 u8 mode = speed & 0x07;
178 set_indexed_reg(hwif, 0x10 + adj,
179 udma_timings[mode].reg10);
180 set_indexed_reg(hwif, 0x11 + adj,
181 udma_timings[mode].reg11);
182 set_indexed_reg(hwif, 0x12 + adj,
183 udma_timings[mode].reg12);
189 set_indexed_reg(hwif, 0x0e + adj,
190 mwdma_timings[mode].reg0e);
191 set_indexed_reg(hwif, 0x0f + adj,
192 mwdma_timings[mode].reg0f);
199 set_indexed_reg(hwif, 0x0c + adj,
200 pio_timings[mode].reg0c);
201 set_indexed_reg(hwif, 0x0d + adj,
202 pio_timings[mode].reg0d);
203 set_indexed_reg(hwif, 0x13 + adj,
204 pio_timings[mode].reg13);
207 printk(KERN_ERR "pdc202xx_new: "
208 "Unknown speed %d ignored\n", speed);
210 } else if (speed == XFER_UDMA_2) {
211 /* Set tHOLD bit to 0 if using UDMA mode 2 */
212 u8 tmp = get_indexed_reg(hwif, 0x10 + adj);
214 set_indexed_reg(hwif, 0x10 + adj, tmp & 0x7f);
220 static void pdcnew_tune_drive(ide_drive_t *drive, u8 pio)
222 pio = ide_get_best_pio_mode(drive, pio, 4);
223 (void)pdcnew_tune_chipset(drive, XFER_PIO_0 + pio);
226 static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
228 if (get_indexed_reg(hwif, 0x0b) & 0x04)
229 return ATA_CBL_PATA40;
231 return ATA_CBL_PATA80;
234 static int pdcnew_config_drive_xfer_rate(ide_drive_t *drive)
236 drive->init_speed = 0;
238 if (ide_tune_dma(drive))
241 if (ide_use_fast_pio(drive))
242 pdcnew_tune_drive(drive, 255);
247 static int pdcnew_quirkproc(ide_drive_t *drive)
249 const char **list, *model = drive->id->model;
251 for (list = pdc_quirk_drives; *list != NULL; list++)
252 if (strstr(model, *list) != NULL)
257 static void pdcnew_reset(ide_drive_t *drive)
260 * Deleted this because it is redundant from the caller.
262 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
263 HWIF(drive)->channel ? "Secondary" : "Primary");
267 * read_counter - Read the byte count registers
268 * @dma_base: for the port address
270 static long __devinit read_counter(u32 dma_base)
272 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
273 u8 cnt0, cnt1, cnt2, cnt3;
274 long count = 0, last;
280 /* Read the current count */
281 outb(0x20, pri_dma_base + 0x01);
282 cnt0 = inb(pri_dma_base + 0x03);
283 outb(0x21, pri_dma_base + 0x01);
284 cnt1 = inb(pri_dma_base + 0x03);
285 outb(0x20, sec_dma_base + 0x01);
286 cnt2 = inb(sec_dma_base + 0x03);
287 outb(0x21, sec_dma_base + 0x01);
288 cnt3 = inb(sec_dma_base + 0x03);
290 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
293 * The 30-bit decrementing counter is read in 4 pieces.
294 * Incorrect value may be read when the most significant bytes
297 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
299 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
300 cnt0, cnt1, cnt2, cnt3);
306 * detect_pll_input_clock - Detect the PLL input clock in Hz.
307 * @dma_base: for the port address
308 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
310 static long __devinit detect_pll_input_clock(unsigned long dma_base)
312 struct timeval start_time, end_time;
313 long start_count, end_count;
314 long pll_input, usec_elapsed;
317 start_count = read_counter(dma_base);
318 do_gettimeofday(&start_time);
320 /* Start the test mode */
321 outb(0x01, dma_base + 0x01);
322 scr1 = inb(dma_base + 0x03);
323 DBG("scr1[%02X]\n", scr1);
324 outb(scr1 | 0x40, dma_base + 0x03);
326 /* Let the counter run for 10 ms. */
329 end_count = read_counter(dma_base);
330 do_gettimeofday(&end_time);
332 /* Stop the test mode */
333 outb(0x01, dma_base + 0x01);
334 scr1 = inb(dma_base + 0x03);
335 DBG("scr1[%02X]\n", scr1);
336 outb(scr1 & ~0x40, dma_base + 0x03);
339 * Calculate the input clock in Hz
340 * (the clock counter is 30 bit wide and counts down)
342 usec_elapsed = (end_time.tv_sec - start_time.tv_sec) * 1000000 +
343 (end_time.tv_usec - start_time.tv_usec);
344 pll_input = ((start_count - end_count) & 0x3fffffff) / 10 *
345 (10000000 / usec_elapsed);
347 DBG("start[%ld] end[%ld]\n", start_count, end_count);
352 #ifdef CONFIG_PPC_PMAC
353 static void __devinit apple_kiwi_init(struct pci_dev *pdev)
355 struct device_node *np = pci_device_to_OF_node(pdev);
356 unsigned int class_rev = 0;
359 if (np == NULL || !of_device_is_compatible(np, "kiwi-root"))
362 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class_rev);
365 if (class_rev >= 0x03) {
366 /* Setup chip magic config stuff (from darwin) */
367 pci_read_config_byte (pdev, 0x40, &conf);
368 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
371 #endif /* CONFIG_PPC_PMAC */
373 static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const char *name)
375 unsigned long dma_base = pci_resource_start(dev, 4);
376 unsigned long sec_dma_base = dma_base + 0x08;
377 long pll_input, pll_output, ratio;
379 u8 pll_ctl0, pll_ctl1;
384 #ifdef CONFIG_PPC_PMAC
385 apple_kiwi_init(dev);
388 /* Calculate the required PLL output frequency */
389 switch(max_dma_rate(dev)) {
390 case 4: /* it's 133 MHz for Ultra133 chips */
391 pll_output = 133333333;
393 case 3: /* and 100 MHz for Ultra100 chips */
395 pll_output = 100000000;
400 * Detect PLL input clock.
401 * On some systems, where PCI bus is running at non-standard clock rate
402 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
403 * PDC20268 and newer chips employ PLL circuit to help correct timing
406 pll_input = detect_pll_input_clock(dma_base);
407 printk("%s: PLL input clock is %ld kHz\n", name, pll_input / 1000);
410 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
411 printk(KERN_ERR "%s: Bad PLL input clock %ld Hz, giving up!\n",
417 DBG("pll_output is %ld Hz\n", pll_output);
419 /* Show the current clock value of PLL control register
420 * (maybe already configured by the BIOS)
422 outb(0x02, sec_dma_base + 0x01);
423 pll_ctl0 = inb(sec_dma_base + 0x03);
424 outb(0x03, sec_dma_base + 0x01);
425 pll_ctl1 = inb(sec_dma_base + 0x03);
427 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
431 * Calculate the ratio of F, R and NO
432 * POUT = (F + 2) / (( R + 2) * NO)
434 ratio = pll_output / (pll_input / 1000);
435 if (ratio < 8600L) { /* 8.6x */
436 /* Using NO = 0x01, R = 0x0d */
438 } else if (ratio < 12900L) { /* 12.9x */
439 /* Using NO = 0x01, R = 0x08 */
441 } else if (ratio < 16100L) { /* 16.1x */
442 /* Using NO = 0x01, R = 0x06 */
444 } else if (ratio < 64000L) { /* 64x */
448 printk(KERN_ERR "%s: Bad ratio %ld, giving up!\n", name, ratio);
452 f = (ratio * (r + 2)) / 1000 - 2;
454 DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
456 if (unlikely(f < 0 || f > 127)) {
458 printk(KERN_ERR "%s: F[%d] invalid!\n", name, f);
465 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
467 outb(0x02, sec_dma_base + 0x01);
468 outb(pll_ctl0, sec_dma_base + 0x03);
469 outb(0x03, sec_dma_base + 0x01);
470 outb(pll_ctl1, sec_dma_base + 0x03);
472 /* Wait the PLL circuit to be stable */
477 * Show the current clock value of PLL control register
479 outb(0x02, sec_dma_base + 0x01);
480 pll_ctl0 = inb(sec_dma_base + 0x03);
481 outb(0x03, sec_dma_base + 0x01);
482 pll_ctl1 = inb(sec_dma_base + 0x03);
484 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
491 static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
495 hwif->tuneproc = &pdcnew_tune_drive;
496 hwif->quirkproc = &pdcnew_quirkproc;
497 hwif->speedproc = &pdcnew_tune_chipset;
498 hwif->resetproc = &pdcnew_reset;
500 hwif->err_stops_fifo = 1;
502 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
504 if (hwif->dma_base == 0)
509 hwif->ultra_mask = hwif->cds->udma_mask;
510 hwif->mwdma_mask = 0x07;
512 hwif->ide_dma_check = &pdcnew_config_drive_xfer_rate;
514 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
515 hwif->cbl = pdcnew_cable_detect(hwif);
519 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
522 static int __devinit init_setup_pdcnew(struct pci_dev *dev, ide_pci_device_t *d)
524 return ide_setup_pci_device(dev, d);
527 static int __devinit init_setup_pdc20270(struct pci_dev *dev,
530 struct pci_dev *findev = NULL;
533 if ((dev->bus->self &&
534 dev->bus->self->vendor == PCI_VENDOR_ID_DEC) &&
535 (dev->bus->self->device == PCI_DEVICE_ID_DEC_21150)) {
536 if (PCI_SLOT(dev->devfn) & 2)
539 while ((findev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, findev)) != NULL) {
540 if ((findev->vendor == dev->vendor) &&
541 (findev->device == dev->device) &&
542 (PCI_SLOT(findev->devfn) & 2)) {
543 if (findev->irq != dev->irq) {
544 findev->irq = dev->irq;
546 ret = ide_setup_pci_devices(dev, findev, d);
553 return ide_setup_pci_device(dev, d);
556 static int __devinit init_setup_pdc20276(struct pci_dev *dev,
559 if ((dev->bus->self) &&
560 (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
561 ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
562 (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
563 printk(KERN_INFO "ide: Skipping Promise PDC20276 "
564 "attached to I2O RAID controller.\n");
567 return ide_setup_pci_device(dev, d);
570 static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
573 .init_setup = init_setup_pdcnew,
574 .init_chipset = init_chipset_pdcnew,
575 .init_hwif = init_hwif_pdc202new,
577 .bootable = OFF_BOARD,
578 .pio_mask = ATA_PIO4,
579 .udma_mask = 0x3f, /* udma0-5 */
582 .init_setup = init_setup_pdcnew,
583 .init_chipset = init_chipset_pdcnew,
584 .init_hwif = init_hwif_pdc202new,
586 .bootable = OFF_BOARD,
587 .pio_mask = ATA_PIO4,
588 .udma_mask = 0x7f, /* udma0-6*/
591 .init_setup = init_setup_pdc20270,
592 .init_chipset = init_chipset_pdcnew,
593 .init_hwif = init_hwif_pdc202new,
595 .bootable = OFF_BOARD,
596 .pio_mask = ATA_PIO4,
597 .udma_mask = 0x3f, /* udma0-5 */
600 .init_setup = init_setup_pdcnew,
601 .init_chipset = init_chipset_pdcnew,
602 .init_hwif = init_hwif_pdc202new,
604 .bootable = OFF_BOARD,
605 .pio_mask = ATA_PIO4,
606 .udma_mask = 0x7f, /* udma0-6*/
609 .init_setup = init_setup_pdcnew,
610 .init_chipset = init_chipset_pdcnew,
611 .init_hwif = init_hwif_pdc202new,
613 .bootable = OFF_BOARD,
614 .pio_mask = ATA_PIO4,
615 .udma_mask = 0x7f, /* udma0-6*/
618 .init_setup = init_setup_pdc20276,
619 .init_chipset = init_chipset_pdcnew,
620 .init_hwif = init_hwif_pdc202new,
622 .bootable = OFF_BOARD,
623 .pio_mask = ATA_PIO4,
624 .udma_mask = 0x7f, /* udma0-6*/
627 .init_setup = init_setup_pdcnew,
628 .init_chipset = init_chipset_pdcnew,
629 .init_hwif = init_hwif_pdc202new,
631 .bootable = OFF_BOARD,
632 .pio_mask = ATA_PIO4,
633 .udma_mask = 0x7f, /* udma0-6*/
638 * pdc202new_init_one - called when a pdc202xx is found
639 * @dev: the pdc202new device
640 * @id: the matching pci id
642 * Called when the PCI registration layer (or the IDE initialization)
643 * finds a device matching our IDE device tables.
646 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
648 ide_pci_device_t *d = &pdcnew_chipsets[id->driver_data];
650 return d->init_setup(dev, d);
653 static struct pci_device_id pdc202new_pci_tbl[] = {
654 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
655 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20269, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
656 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20270, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
657 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20271, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
658 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20275, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
659 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20276, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
660 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20277, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6},
663 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
665 static struct pci_driver driver = {
666 .name = "Promise_IDE",
667 .id_table = pdc202new_pci_tbl,
668 .probe = pdc202new_init_one,
671 static int __init pdc202new_ide_init(void)
673 return ide_pci_register_driver(&driver);
676 module_init(pdc202new_ide_init);
678 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
679 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
680 MODULE_LICENSE("GPL");