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 void pdcnew_set_mode(ide_drive_t *drive, const u8 speed)
151 ide_hwif_t *hwif = HWIF(drive);
152 u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
155 * IDE core issues SETFEATURES_XFER to the drive first (thanks to
156 * IDE_HFLAG_POST_SET_MODE in ->host_flags). PDC202xx hardware will
157 * automatically set the timing registers based on 100 MHz PLL output.
159 * As we set up the PLL to output 133 MHz for UltraDMA/133 capable
160 * chips, we must override the default register settings...
162 if (max_dma_rate(hwif->pci_dev) == 4) {
163 u8 mode = speed & 0x07;
173 set_indexed_reg(hwif, 0x10 + adj,
174 udma_timings[mode].reg10);
175 set_indexed_reg(hwif, 0x11 + adj,
176 udma_timings[mode].reg11);
177 set_indexed_reg(hwif, 0x12 + adj,
178 udma_timings[mode].reg12);
184 set_indexed_reg(hwif, 0x0e + adj,
185 mwdma_timings[mode].reg0e);
186 set_indexed_reg(hwif, 0x0f + adj,
187 mwdma_timings[mode].reg0f);
194 set_indexed_reg(hwif, 0x0c + adj,
195 pio_timings[mode].reg0c);
196 set_indexed_reg(hwif, 0x0d + adj,
197 pio_timings[mode].reg0d);
198 set_indexed_reg(hwif, 0x13 + adj,
199 pio_timings[mode].reg13);
202 printk(KERN_ERR "pdc202xx_new: "
203 "Unknown speed %d ignored\n", speed);
205 } else if (speed == XFER_UDMA_2) {
206 /* Set tHOLD bit to 0 if using UDMA mode 2 */
207 u8 tmp = get_indexed_reg(hwif, 0x10 + adj);
209 set_indexed_reg(hwif, 0x10 + adj, tmp & 0x7f);
213 static void pdcnew_set_pio_mode(ide_drive_t *drive, const u8 pio)
215 pdcnew_set_mode(drive, XFER_PIO_0 + pio);
218 static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
220 if (get_indexed_reg(hwif, 0x0b) & 0x04)
221 return ATA_CBL_PATA40;
223 return ATA_CBL_PATA80;
226 static int pdcnew_config_drive_xfer_rate(ide_drive_t *drive)
228 if (ide_tune_dma(drive))
231 ide_set_max_pio(drive);
236 static int pdcnew_quirkproc(ide_drive_t *drive)
238 const char **list, *model = drive->id->model;
240 for (list = pdc_quirk_drives; *list != NULL; list++)
241 if (strstr(model, *list) != NULL)
246 static void pdcnew_reset(ide_drive_t *drive)
249 * Deleted this because it is redundant from the caller.
251 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
252 HWIF(drive)->channel ? "Secondary" : "Primary");
256 * read_counter - Read the byte count registers
257 * @dma_base: for the port address
259 static long __devinit read_counter(u32 dma_base)
261 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
262 u8 cnt0, cnt1, cnt2, cnt3;
263 long count = 0, last;
269 /* Read the current count */
270 outb(0x20, pri_dma_base + 0x01);
271 cnt0 = inb(pri_dma_base + 0x03);
272 outb(0x21, pri_dma_base + 0x01);
273 cnt1 = inb(pri_dma_base + 0x03);
274 outb(0x20, sec_dma_base + 0x01);
275 cnt2 = inb(sec_dma_base + 0x03);
276 outb(0x21, sec_dma_base + 0x01);
277 cnt3 = inb(sec_dma_base + 0x03);
279 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
282 * The 30-bit decrementing counter is read in 4 pieces.
283 * Incorrect value may be read when the most significant bytes
286 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
288 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
289 cnt0, cnt1, cnt2, cnt3);
295 * detect_pll_input_clock - Detect the PLL input clock in Hz.
296 * @dma_base: for the port address
297 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
299 static long __devinit detect_pll_input_clock(unsigned long dma_base)
301 struct timeval start_time, end_time;
302 long start_count, end_count;
303 long pll_input, usec_elapsed;
306 start_count = read_counter(dma_base);
307 do_gettimeofday(&start_time);
309 /* Start the test mode */
310 outb(0x01, dma_base + 0x01);
311 scr1 = inb(dma_base + 0x03);
312 DBG("scr1[%02X]\n", scr1);
313 outb(scr1 | 0x40, dma_base + 0x03);
315 /* Let the counter run for 10 ms. */
318 end_count = read_counter(dma_base);
319 do_gettimeofday(&end_time);
321 /* Stop the test mode */
322 outb(0x01, dma_base + 0x01);
323 scr1 = inb(dma_base + 0x03);
324 DBG("scr1[%02X]\n", scr1);
325 outb(scr1 & ~0x40, dma_base + 0x03);
328 * Calculate the input clock in Hz
329 * (the clock counter is 30 bit wide and counts down)
331 usec_elapsed = (end_time.tv_sec - start_time.tv_sec) * 1000000 +
332 (end_time.tv_usec - start_time.tv_usec);
333 pll_input = ((start_count - end_count) & 0x3fffffff) / 10 *
334 (10000000 / usec_elapsed);
336 DBG("start[%ld] end[%ld]\n", start_count, end_count);
341 #ifdef CONFIG_PPC_PMAC
342 static void __devinit apple_kiwi_init(struct pci_dev *pdev)
344 struct device_node *np = pci_device_to_OF_node(pdev);
345 unsigned int class_rev = 0;
348 if (np == NULL || !of_device_is_compatible(np, "kiwi-root"))
351 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class_rev);
354 if (class_rev >= 0x03) {
355 /* Setup chip magic config stuff (from darwin) */
356 pci_read_config_byte (pdev, 0x40, &conf);
357 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
360 #endif /* CONFIG_PPC_PMAC */
362 static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const char *name)
364 unsigned long dma_base = pci_resource_start(dev, 4);
365 unsigned long sec_dma_base = dma_base + 0x08;
366 long pll_input, pll_output, ratio;
368 u8 pll_ctl0, pll_ctl1;
373 #ifdef CONFIG_PPC_PMAC
374 apple_kiwi_init(dev);
377 /* Calculate the required PLL output frequency */
378 switch(max_dma_rate(dev)) {
379 case 4: /* it's 133 MHz for Ultra133 chips */
380 pll_output = 133333333;
382 case 3: /* and 100 MHz for Ultra100 chips */
384 pll_output = 100000000;
389 * Detect PLL input clock.
390 * On some systems, where PCI bus is running at non-standard clock rate
391 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
392 * PDC20268 and newer chips employ PLL circuit to help correct timing
395 pll_input = detect_pll_input_clock(dma_base);
396 printk("%s: PLL input clock is %ld kHz\n", name, pll_input / 1000);
399 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
400 printk(KERN_ERR "%s: Bad PLL input clock %ld Hz, giving up!\n",
406 DBG("pll_output is %ld Hz\n", pll_output);
408 /* Show the current clock value of PLL control register
409 * (maybe already configured by the BIOS)
411 outb(0x02, sec_dma_base + 0x01);
412 pll_ctl0 = inb(sec_dma_base + 0x03);
413 outb(0x03, sec_dma_base + 0x01);
414 pll_ctl1 = inb(sec_dma_base + 0x03);
416 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
420 * Calculate the ratio of F, R and NO
421 * POUT = (F + 2) / (( R + 2) * NO)
423 ratio = pll_output / (pll_input / 1000);
424 if (ratio < 8600L) { /* 8.6x */
425 /* Using NO = 0x01, R = 0x0d */
427 } else if (ratio < 12900L) { /* 12.9x */
428 /* Using NO = 0x01, R = 0x08 */
430 } else if (ratio < 16100L) { /* 16.1x */
431 /* Using NO = 0x01, R = 0x06 */
433 } else if (ratio < 64000L) { /* 64x */
437 printk(KERN_ERR "%s: Bad ratio %ld, giving up!\n", name, ratio);
441 f = (ratio * (r + 2)) / 1000 - 2;
443 DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
445 if (unlikely(f < 0 || f > 127)) {
447 printk(KERN_ERR "%s: F[%d] invalid!\n", name, f);
454 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
456 outb(0x02, sec_dma_base + 0x01);
457 outb(pll_ctl0, sec_dma_base + 0x03);
458 outb(0x03, sec_dma_base + 0x01);
459 outb(pll_ctl1, sec_dma_base + 0x03);
461 /* Wait the PLL circuit to be stable */
466 * Show the current clock value of PLL control register
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);
480 static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
484 hwif->set_pio_mode = &pdcnew_set_pio_mode;
485 hwif->set_dma_mode = &pdcnew_set_mode;
487 hwif->quirkproc = &pdcnew_quirkproc;
488 hwif->resetproc = &pdcnew_reset;
490 hwif->err_stops_fifo = 1;
492 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
494 if (hwif->dma_base == 0)
499 hwif->ultra_mask = hwif->cds->udma_mask;
500 hwif->mwdma_mask = 0x07;
502 hwif->ide_dma_check = &pdcnew_config_drive_xfer_rate;
504 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
505 hwif->cbl = pdcnew_cable_detect(hwif);
509 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
512 static int __devinit init_setup_pdcnew(struct pci_dev *dev, ide_pci_device_t *d)
514 return ide_setup_pci_device(dev, d);
517 static int __devinit init_setup_pdc20270(struct pci_dev *dev, ide_pci_device_t *d)
519 struct pci_dev *bridge = dev->bus->self;
521 if (bridge != NULL &&
522 bridge->vendor == PCI_VENDOR_ID_DEC &&
523 bridge->device == PCI_DEVICE_ID_DEC_21150) {
524 struct pci_dev *dev2;
526 if (PCI_SLOT(dev->devfn) & 2)
529 dev2 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn) + 2,
530 PCI_FUNC(dev->devfn)));
532 dev2->vendor == dev->vendor &&
533 dev2->device == dev->device) {
536 if (dev2->irq != dev->irq) {
537 dev2->irq = dev->irq;
539 printk(KERN_WARNING "%s: PCI config space "
540 "interrupt fixed.\n", d->name);
543 ret = ide_setup_pci_devices(dev, dev2, d);
549 return ide_setup_pci_device(dev, d);
552 static int __devinit init_setup_pdc20276(struct pci_dev *dev, ide_pci_device_t *d)
554 struct pci_dev *bridge = dev->bus->self;
556 if (bridge != NULL &&
557 bridge->vendor == PCI_VENDOR_ID_INTEL &&
558 (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
559 bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
561 printk(KERN_INFO "%s: attached to I2O RAID controller, "
562 "skipping.\n", d->name);
565 return ide_setup_pci_device(dev, d);
568 static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
571 .init_setup = init_setup_pdcnew,
572 .init_chipset = init_chipset_pdcnew,
573 .init_hwif = init_hwif_pdc202new,
575 .bootable = OFF_BOARD,
576 .pio_mask = ATA_PIO4,
577 .udma_mask = 0x3f, /* udma0-5 */
578 .host_flags = IDE_HFLAG_POST_SET_MODE,
581 .init_setup = init_setup_pdcnew,
582 .init_chipset = init_chipset_pdcnew,
583 .init_hwif = init_hwif_pdc202new,
585 .bootable = OFF_BOARD,
586 .pio_mask = ATA_PIO4,
587 .udma_mask = 0x7f, /* udma0-6*/
588 .host_flags = IDE_HFLAG_POST_SET_MODE,
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 */
598 .host_flags = IDE_HFLAG_POST_SET_MODE,
601 .init_setup = init_setup_pdcnew,
602 .init_chipset = init_chipset_pdcnew,
603 .init_hwif = init_hwif_pdc202new,
605 .bootable = OFF_BOARD,
606 .pio_mask = ATA_PIO4,
607 .udma_mask = 0x7f, /* udma0-6*/
608 .host_flags = IDE_HFLAG_POST_SET_MODE,
611 .init_setup = init_setup_pdcnew,
612 .init_chipset = init_chipset_pdcnew,
613 .init_hwif = init_hwif_pdc202new,
615 .bootable = OFF_BOARD,
616 .pio_mask = ATA_PIO4,
617 .udma_mask = 0x7f, /* udma0-6*/
618 .host_flags = IDE_HFLAG_POST_SET_MODE,
621 .init_setup = init_setup_pdc20276,
622 .init_chipset = init_chipset_pdcnew,
623 .init_hwif = init_hwif_pdc202new,
625 .bootable = OFF_BOARD,
626 .pio_mask = ATA_PIO4,
627 .udma_mask = 0x7f, /* udma0-6*/
628 .host_flags = IDE_HFLAG_POST_SET_MODE,
631 .init_setup = init_setup_pdcnew,
632 .init_chipset = init_chipset_pdcnew,
633 .init_hwif = init_hwif_pdc202new,
635 .bootable = OFF_BOARD,
636 .pio_mask = ATA_PIO4,
637 .udma_mask = 0x7f, /* udma0-6*/
638 .host_flags = IDE_HFLAG_POST_SET_MODE,
643 * pdc202new_init_one - called when a pdc202xx is found
644 * @dev: the pdc202new device
645 * @id: the matching pci id
647 * Called when the PCI registration layer (or the IDE initialization)
648 * finds a device matching our IDE device tables.
651 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
653 ide_pci_device_t *d = &pdcnew_chipsets[id->driver_data];
655 return d->init_setup(dev, d);
658 static struct pci_device_id pdc202new_pci_tbl[] = {
659 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
660 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20269, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
661 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20270, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
662 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20271, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
663 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20275, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
664 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20276, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
665 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20277, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6},
668 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
670 static struct pci_driver driver = {
671 .name = "Promise_IDE",
672 .id_table = pdc202new_pci_tbl,
673 .probe = pdc202new_init_one,
676 static int __init pdc202new_ide_init(void)
678 return ide_pci_register_driver(&driver);
681 module_init(pdc202new_ide_init);
683 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
684 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
685 MODULE_LICENSE("GPL");