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/pci.h>
23 #include <linux/init.h>
24 #include <linux/ide.h>
28 #ifdef CONFIG_PPC_PMAC
30 #include <asm/pci-bridge.h>
33 #define DRV_NAME "pdc202xx_new"
38 #define DBG(fmt, args...) printk("%s: " fmt, __func__, ## args)
40 #define DBG(fmt, args...)
43 static const char *pdc_quirk_drives[] = {
44 "QUANTUM FIREBALLlct08 08",
45 "QUANTUM FIREBALLP KA6.4",
46 "QUANTUM FIREBALLP KA9.1",
47 "QUANTUM FIREBALLP LM20.4",
48 "QUANTUM FIREBALLP KX13.6",
49 "QUANTUM FIREBALLP KX20.5",
50 "QUANTUM FIREBALLP KX27.3",
51 "QUANTUM FIREBALLP LM20.5",
55 static u8 max_dma_rate(struct pci_dev *pdev)
59 switch(pdev->device) {
60 case PCI_DEVICE_ID_PROMISE_20277:
61 case PCI_DEVICE_ID_PROMISE_20276:
62 case PCI_DEVICE_ID_PROMISE_20275:
63 case PCI_DEVICE_ID_PROMISE_20271:
64 case PCI_DEVICE_ID_PROMISE_20269:
67 case PCI_DEVICE_ID_PROMISE_20270:
68 case PCI_DEVICE_ID_PROMISE_20268:
79 * get_indexed_reg - Get indexed register
80 * @hwif: for the port address
81 * @index: index of the indexed register
83 static u8 get_indexed_reg(ide_hwif_t *hwif, u8 index)
87 outb(index, hwif->dma_base + 1);
88 value = inb(hwif->dma_base + 3);
90 DBG("index[%02X] value[%02X]\n", index, value);
95 * set_indexed_reg - Set indexed register
96 * @hwif: for the port address
97 * @index: index of the indexed register
99 static void set_indexed_reg(ide_hwif_t *hwif, u8 index, u8 value)
101 outb(index, hwif->dma_base + 1);
102 outb(value, hwif->dma_base + 3);
103 DBG("index[%02X] value[%02X]\n", index, value);
107 * ATA Timing Tables based on 133 MHz PLL output clock.
109 * If the PLL outputs 100 MHz clock, the ASIC hardware will set
110 * the timing registers automatically when "set features" command is
111 * issued to the device. However, if the PLL output clock is 133 MHz,
112 * the following tables must be used.
114 static struct pio_timing {
115 u8 reg0c, reg0d, reg13;
117 { 0xfb, 0x2b, 0xac }, /* PIO mode 0, IORDY off, Prefetch off */
118 { 0x46, 0x29, 0xa4 }, /* PIO mode 1, IORDY off, Prefetch off */
119 { 0x23, 0x26, 0x64 }, /* PIO mode 2, IORDY off, Prefetch off */
120 { 0x27, 0x0d, 0x35 }, /* PIO mode 3, IORDY on, Prefetch off */
121 { 0x23, 0x09, 0x25 }, /* PIO mode 4, IORDY on, Prefetch off */
124 static struct mwdma_timing {
126 } mwdma_timings [] = {
127 { 0xdf, 0x5f }, /* MWDMA mode 0 */
128 { 0x6b, 0x27 }, /* MWDMA mode 1 */
129 { 0x69, 0x25 }, /* MWDMA mode 2 */
132 static struct udma_timing {
133 u8 reg10, reg11, reg12;
134 } udma_timings [] = {
135 { 0x4a, 0x0f, 0xd5 }, /* UDMA mode 0 */
136 { 0x3a, 0x0a, 0xd0 }, /* UDMA mode 1 */
137 { 0x2a, 0x07, 0xcd }, /* UDMA mode 2 */
138 { 0x1a, 0x05, 0xcd }, /* UDMA mode 3 */
139 { 0x1a, 0x03, 0xcd }, /* UDMA mode 4 */
140 { 0x1a, 0x02, 0xcb }, /* UDMA mode 5 */
141 { 0x1a, 0x01, 0xcb }, /* UDMA mode 6 */
144 static void pdcnew_set_dma_mode(ide_drive_t *drive, const u8 speed)
146 ide_hwif_t *hwif = HWIF(drive);
147 struct pci_dev *dev = to_pci_dev(hwif->dev);
148 u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
151 * IDE core issues SETFEATURES_XFER to the drive first (thanks to
152 * IDE_HFLAG_POST_SET_MODE in ->host_flags). PDC202xx hardware will
153 * automatically set the timing registers based on 100 MHz PLL output.
155 * As we set up the PLL to output 133 MHz for UltraDMA/133 capable
156 * chips, we must override the default register settings...
158 if (max_dma_rate(dev) == 4) {
159 u8 mode = speed & 0x07;
161 if (speed >= XFER_UDMA_0) {
162 set_indexed_reg(hwif, 0x10 + adj,
163 udma_timings[mode].reg10);
164 set_indexed_reg(hwif, 0x11 + adj,
165 udma_timings[mode].reg11);
166 set_indexed_reg(hwif, 0x12 + adj,
167 udma_timings[mode].reg12);
169 set_indexed_reg(hwif, 0x0e + adj,
170 mwdma_timings[mode].reg0e);
171 set_indexed_reg(hwif, 0x0f + adj,
172 mwdma_timings[mode].reg0f);
174 } else if (speed == XFER_UDMA_2) {
175 /* Set tHOLD bit to 0 if using UDMA mode 2 */
176 u8 tmp = get_indexed_reg(hwif, 0x10 + adj);
178 set_indexed_reg(hwif, 0x10 + adj, tmp & 0x7f);
182 static void pdcnew_set_pio_mode(ide_drive_t *drive, const u8 pio)
184 ide_hwif_t *hwif = drive->hwif;
185 struct pci_dev *dev = to_pci_dev(hwif->dev);
186 u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
188 if (max_dma_rate(dev) == 4) {
189 set_indexed_reg(hwif, 0x0c + adj, pio_timings[pio].reg0c);
190 set_indexed_reg(hwif, 0x0d + adj, pio_timings[pio].reg0d);
191 set_indexed_reg(hwif, 0x13 + adj, pio_timings[pio].reg13);
195 static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
197 if (get_indexed_reg(hwif, 0x0b) & 0x04)
198 return ATA_CBL_PATA40;
200 return ATA_CBL_PATA80;
203 static void pdcnew_quirkproc(ide_drive_t *drive)
205 const char **list, *m = (char *)&drive->id[ATA_ID_PROD];
207 for (list = pdc_quirk_drives; *list != NULL; list++)
208 if (strstr(m, *list) != NULL) {
209 drive->quirk_list = 2;
213 drive->quirk_list = 0;
216 static void pdcnew_reset(ide_drive_t *drive)
219 * Deleted this because it is redundant from the caller.
221 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
222 HWIF(drive)->channel ? "Secondary" : "Primary");
226 * read_counter - Read the byte count registers
227 * @dma_base: for the port address
229 static long read_counter(u32 dma_base)
231 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
232 u8 cnt0, cnt1, cnt2, cnt3;
233 long count = 0, last;
239 /* Read the current count */
240 outb(0x20, pri_dma_base + 0x01);
241 cnt0 = inb(pri_dma_base + 0x03);
242 outb(0x21, pri_dma_base + 0x01);
243 cnt1 = inb(pri_dma_base + 0x03);
244 outb(0x20, sec_dma_base + 0x01);
245 cnt2 = inb(sec_dma_base + 0x03);
246 outb(0x21, sec_dma_base + 0x01);
247 cnt3 = inb(sec_dma_base + 0x03);
249 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
252 * The 30-bit decrementing counter is read in 4 pieces.
253 * Incorrect value may be read when the most significant bytes
256 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
258 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
259 cnt0, cnt1, cnt2, cnt3);
265 * detect_pll_input_clock - Detect the PLL input clock in Hz.
266 * @dma_base: for the port address
267 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
269 static long detect_pll_input_clock(unsigned long dma_base)
271 struct timeval start_time, end_time;
272 long start_count, end_count;
273 long pll_input, usec_elapsed;
276 start_count = read_counter(dma_base);
277 do_gettimeofday(&start_time);
279 /* Start the test mode */
280 outb(0x01, dma_base + 0x01);
281 scr1 = inb(dma_base + 0x03);
282 DBG("scr1[%02X]\n", scr1);
283 outb(scr1 | 0x40, dma_base + 0x03);
285 /* Let the counter run for 10 ms. */
288 end_count = read_counter(dma_base);
289 do_gettimeofday(&end_time);
291 /* Stop the test mode */
292 outb(0x01, dma_base + 0x01);
293 scr1 = inb(dma_base + 0x03);
294 DBG("scr1[%02X]\n", scr1);
295 outb(scr1 & ~0x40, dma_base + 0x03);
298 * Calculate the input clock in Hz
299 * (the clock counter is 30 bit wide and counts down)
301 usec_elapsed = (end_time.tv_sec - start_time.tv_sec) * 1000000 +
302 (end_time.tv_usec - start_time.tv_usec);
303 pll_input = ((start_count - end_count) & 0x3fffffff) / 10 *
304 (10000000 / usec_elapsed);
306 DBG("start[%ld] end[%ld]\n", start_count, end_count);
311 #ifdef CONFIG_PPC_PMAC
312 static void apple_kiwi_init(struct pci_dev *pdev)
314 struct device_node *np = pci_device_to_OF_node(pdev);
317 if (np == NULL || !of_device_is_compatible(np, "kiwi-root"))
320 if (pdev->revision >= 0x03) {
321 /* Setup chip magic config stuff (from darwin) */
322 pci_read_config_byte (pdev, 0x40, &conf);
323 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
326 #endif /* CONFIG_PPC_PMAC */
328 static unsigned int init_chipset_pdcnew(struct pci_dev *dev)
330 const char *name = DRV_NAME;
331 unsigned long dma_base = pci_resource_start(dev, 4);
332 unsigned long sec_dma_base = dma_base + 0x08;
333 long pll_input, pll_output, ratio;
335 u8 pll_ctl0, pll_ctl1;
340 #ifdef CONFIG_PPC_PMAC
341 apple_kiwi_init(dev);
344 /* Calculate the required PLL output frequency */
345 switch(max_dma_rate(dev)) {
346 case 4: /* it's 133 MHz for Ultra133 chips */
347 pll_output = 133333333;
349 case 3: /* and 100 MHz for Ultra100 chips */
351 pll_output = 100000000;
356 * Detect PLL input clock.
357 * On some systems, where PCI bus is running at non-standard clock rate
358 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
359 * PDC20268 and newer chips employ PLL circuit to help correct timing
362 pll_input = detect_pll_input_clock(dma_base);
363 printk(KERN_INFO "%s %s: PLL input clock is %ld kHz\n",
364 name, pci_name(dev), pll_input / 1000);
367 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
368 printk(KERN_ERR "%s %s: Bad PLL input clock %ld Hz, giving up!"
369 "\n", name, pci_name(dev), pll_input);
374 DBG("pll_output is %ld Hz\n", pll_output);
376 /* Show the current clock value of PLL control register
377 * (maybe already configured by the BIOS)
379 outb(0x02, sec_dma_base + 0x01);
380 pll_ctl0 = inb(sec_dma_base + 0x03);
381 outb(0x03, sec_dma_base + 0x01);
382 pll_ctl1 = inb(sec_dma_base + 0x03);
384 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
388 * Calculate the ratio of F, R and NO
389 * POUT = (F + 2) / (( R + 2) * NO)
391 ratio = pll_output / (pll_input / 1000);
392 if (ratio < 8600L) { /* 8.6x */
393 /* Using NO = 0x01, R = 0x0d */
395 } else if (ratio < 12900L) { /* 12.9x */
396 /* Using NO = 0x01, R = 0x08 */
398 } else if (ratio < 16100L) { /* 16.1x */
399 /* Using NO = 0x01, R = 0x06 */
401 } else if (ratio < 64000L) { /* 64x */
405 printk(KERN_ERR "%s %s: Bad ratio %ld, giving up!\n",
406 name, pci_name(dev), ratio);
410 f = (ratio * (r + 2)) / 1000 - 2;
412 DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
414 if (unlikely(f < 0 || f > 127)) {
416 printk(KERN_ERR "%s %s: F[%d] invalid!\n",
417 name, pci_name(dev), f);
424 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
426 outb(0x02, sec_dma_base + 0x01);
427 outb(pll_ctl0, sec_dma_base + 0x03);
428 outb(0x03, sec_dma_base + 0x01);
429 outb(pll_ctl1, sec_dma_base + 0x03);
431 /* Wait the PLL circuit to be stable */
436 * Show the current clock value of PLL control register
438 outb(0x02, sec_dma_base + 0x01);
439 pll_ctl0 = inb(sec_dma_base + 0x03);
440 outb(0x03, sec_dma_base + 0x01);
441 pll_ctl1 = inb(sec_dma_base + 0x03);
443 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
450 static struct pci_dev * __devinit pdc20270_get_dev2(struct pci_dev *dev)
452 struct pci_dev *dev2;
454 dev2 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn) + 1,
455 PCI_FUNC(dev->devfn)));
458 dev2->vendor == dev->vendor &&
459 dev2->device == dev->device) {
461 if (dev2->irq != dev->irq) {
462 dev2->irq = dev->irq;
463 printk(KERN_INFO DRV_NAME " %s: PCI config space "
464 "interrupt fixed\n", pci_name(dev));
473 static const struct ide_port_ops pdcnew_port_ops = {
474 .set_pio_mode = pdcnew_set_pio_mode,
475 .set_dma_mode = pdcnew_set_dma_mode,
476 .quirkproc = pdcnew_quirkproc,
477 .resetproc = pdcnew_reset,
478 .cable_detect = pdcnew_cable_detect,
481 #define DECLARE_PDCNEW_DEV(udma) \
484 .init_chipset = init_chipset_pdcnew, \
485 .port_ops = &pdcnew_port_ops, \
486 .host_flags = IDE_HFLAG_POST_SET_MODE | \
487 IDE_HFLAG_ERROR_STOPS_FIFO | \
488 IDE_HFLAG_OFF_BOARD, \
489 .pio_mask = ATA_PIO4, \
490 .mwdma_mask = ATA_MWDMA2, \
494 static const struct ide_port_info pdcnew_chipsets[] __devinitdata = {
495 /* 0: PDC202{68,70} */ DECLARE_PDCNEW_DEV(ATA_UDMA5),
496 /* 1: PDC202{69,71,75,76,77} */ DECLARE_PDCNEW_DEV(ATA_UDMA6),
500 * pdc202new_init_one - called when a pdc202xx is found
501 * @dev: the pdc202new device
502 * @id: the matching pci id
504 * Called when the PCI registration layer (or the IDE initialization)
505 * finds a device matching our IDE device tables.
508 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
510 const struct ide_port_info *d = &pdcnew_chipsets[id->driver_data];
511 struct pci_dev *bridge = dev->bus->self;
513 if (dev->device == PCI_DEVICE_ID_PROMISE_20270 && bridge &&
514 bridge->vendor == PCI_VENDOR_ID_DEC &&
515 bridge->device == PCI_DEVICE_ID_DEC_21150) {
516 struct pci_dev *dev2;
518 if (PCI_SLOT(dev->devfn) & 2)
521 dev2 = pdc20270_get_dev2(dev);
524 int ret = ide_pci_init_two(dev, dev2, d, NULL);
531 if (dev->device == PCI_DEVICE_ID_PROMISE_20276 && bridge &&
532 bridge->vendor == PCI_VENDOR_ID_INTEL &&
533 (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
534 bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
535 printk(KERN_INFO DRV_NAME " %s: attached to I2O RAID controller,"
536 " skipping\n", pci_name(dev));
540 return ide_pci_init_one(dev, d, NULL);
543 static void __devexit pdc202new_remove(struct pci_dev *dev)
545 struct ide_host *host = pci_get_drvdata(dev);
546 struct pci_dev *dev2 = host->dev[1] ? to_pci_dev(host->dev[1]) : NULL;
552 static const struct pci_device_id pdc202new_pci_tbl[] = {
553 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20268), 0 },
554 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20269), 1 },
555 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20270), 0 },
556 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20271), 1 },
557 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20275), 1 },
558 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20276), 1 },
559 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20277), 1 },
562 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
564 static struct pci_driver pdc202new_pci_driver = {
565 .name = "Promise_IDE",
566 .id_table = pdc202new_pci_tbl,
567 .probe = pdc202new_init_one,
568 .remove = __devexit_p(pdc202new_remove),
569 .suspend = ide_pci_suspend,
570 .resume = ide_pci_resume,
573 static int __init pdc202new_ide_init(void)
575 return ide_pci_register_driver(&pdc202new_pci_driver);
578 static void __exit pdc202new_ide_exit(void)
580 pci_unregister_driver(&pdc202new_pci_driver);
583 module_init(pdc202new_ide_init);
584 module_exit(pdc202new_ide_exit);
586 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
587 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
588 MODULE_LICENSE("GPL");