V4L/DVB (6420): V4L2 conversion for tda9875 from V4L1 API
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / ide / pci / pdc202xx_new.c
blob2b4f44e45a1a370936300b4c7900f0dbf49f0148
1 /*
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.
9 * Split from:
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>
23 #include <linux/mm.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>
32 #include <asm/io.h>
33 #include <asm/irq.h>
35 #ifdef CONFIG_PPC_PMAC
36 #include <asm/prom.h>
37 #include <asm/pci-bridge.h>
38 #endif
40 #undef DEBUG
42 #ifdef DEBUG
43 #define DBG(fmt, args...) printk("%s: " fmt, __FUNCTION__, ## args)
44 #else
45 #define DBG(fmt, args...)
46 #endif
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",
57 NULL
60 static u8 max_dma_rate(struct pci_dev *pdev)
62 u8 mode;
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:
70 mode = 4;
71 break;
72 case PCI_DEVICE_ID_PROMISE_20270:
73 case PCI_DEVICE_ID_PROMISE_20268:
74 mode = 3;
75 break;
76 default:
77 return 0;
80 return mode;
83 /**
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)
90 u8 value;
92 outb(index, hwif->dma_vendor1);
93 value = inb(hwif->dma_vendor3);
95 DBG("index[%02X] value[%02X]\n", index, value);
96 return value;
99 /**
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;
121 } pio_timings [] = {
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 {
130 u8 reg0e, reg0f;
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;
165 switch (speed) {
166 case XFER_UDMA_6:
167 case XFER_UDMA_5:
168 case XFER_UDMA_4:
169 case XFER_UDMA_3:
170 case XFER_UDMA_2:
171 case XFER_UDMA_1:
172 case XFER_UDMA_0:
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);
179 break;
181 case XFER_MW_DMA_2:
182 case XFER_MW_DMA_1:
183 case XFER_MW_DMA_0:
184 set_indexed_reg(hwif, 0x0e + adj,
185 mwdma_timings[mode].reg0e);
186 set_indexed_reg(hwif, 0x0f + adj,
187 mwdma_timings[mode].reg0f);
188 break;
189 case XFER_PIO_4:
190 case XFER_PIO_3:
191 case XFER_PIO_2:
192 case XFER_PIO_1:
193 case XFER_PIO_0:
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);
200 break;
201 default:
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;
222 else
223 return ATA_CBL_PATA80;
226 static int pdcnew_quirkproc(ide_drive_t *drive)
228 const char **list, *model = drive->id->model;
230 for (list = pdc_quirk_drives; *list != NULL; list++)
231 if (strstr(model, *list) != NULL)
232 return 2;
233 return 0;
236 static void pdcnew_reset(ide_drive_t *drive)
239 * Deleted this because it is redundant from the caller.
241 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
242 HWIF(drive)->channel ? "Secondary" : "Primary");
246 * read_counter - Read the byte count registers
247 * @dma_base: for the port address
249 static long __devinit read_counter(u32 dma_base)
251 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
252 u8 cnt0, cnt1, cnt2, cnt3;
253 long count = 0, last;
254 int retry = 3;
256 do {
257 last = count;
259 /* Read the current count */
260 outb(0x20, pri_dma_base + 0x01);
261 cnt0 = inb(pri_dma_base + 0x03);
262 outb(0x21, pri_dma_base + 0x01);
263 cnt1 = inb(pri_dma_base + 0x03);
264 outb(0x20, sec_dma_base + 0x01);
265 cnt2 = inb(sec_dma_base + 0x03);
266 outb(0x21, sec_dma_base + 0x01);
267 cnt3 = inb(sec_dma_base + 0x03);
269 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
272 * The 30-bit decrementing counter is read in 4 pieces.
273 * Incorrect value may be read when the most significant bytes
274 * are changing...
276 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
278 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
279 cnt0, cnt1, cnt2, cnt3);
281 return count;
285 * detect_pll_input_clock - Detect the PLL input clock in Hz.
286 * @dma_base: for the port address
287 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
289 static long __devinit detect_pll_input_clock(unsigned long dma_base)
291 struct timeval start_time, end_time;
292 long start_count, end_count;
293 long pll_input, usec_elapsed;
294 u8 scr1;
296 start_count = read_counter(dma_base);
297 do_gettimeofday(&start_time);
299 /* Start the test mode */
300 outb(0x01, dma_base + 0x01);
301 scr1 = inb(dma_base + 0x03);
302 DBG("scr1[%02X]\n", scr1);
303 outb(scr1 | 0x40, dma_base + 0x03);
305 /* Let the counter run for 10 ms. */
306 mdelay(10);
308 end_count = read_counter(dma_base);
309 do_gettimeofday(&end_time);
311 /* Stop the test mode */
312 outb(0x01, dma_base + 0x01);
313 scr1 = inb(dma_base + 0x03);
314 DBG("scr1[%02X]\n", scr1);
315 outb(scr1 & ~0x40, dma_base + 0x03);
318 * Calculate the input clock in Hz
319 * (the clock counter is 30 bit wide and counts down)
321 usec_elapsed = (end_time.tv_sec - start_time.tv_sec) * 1000000 +
322 (end_time.tv_usec - start_time.tv_usec);
323 pll_input = ((start_count - end_count) & 0x3fffffff) / 10 *
324 (10000000 / usec_elapsed);
326 DBG("start[%ld] end[%ld]\n", start_count, end_count);
328 return pll_input;
331 #ifdef CONFIG_PPC_PMAC
332 static void __devinit apple_kiwi_init(struct pci_dev *pdev)
334 struct device_node *np = pci_device_to_OF_node(pdev);
335 u8 conf;
337 if (np == NULL || !of_device_is_compatible(np, "kiwi-root"))
338 return;
340 if (pdev->revision >= 0x03) {
341 /* Setup chip magic config stuff (from darwin) */
342 pci_read_config_byte (pdev, 0x40, &conf);
343 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
346 #endif /* CONFIG_PPC_PMAC */
348 static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const char *name)
350 unsigned long dma_base = pci_resource_start(dev, 4);
351 unsigned long sec_dma_base = dma_base + 0x08;
352 long pll_input, pll_output, ratio;
353 int f, r;
354 u8 pll_ctl0, pll_ctl1;
356 if (dma_base == 0)
357 return -EFAULT;
359 #ifdef CONFIG_PPC_PMAC
360 apple_kiwi_init(dev);
361 #endif
363 /* Calculate the required PLL output frequency */
364 switch(max_dma_rate(dev)) {
365 case 4: /* it's 133 MHz for Ultra133 chips */
366 pll_output = 133333333;
367 break;
368 case 3: /* and 100 MHz for Ultra100 chips */
369 default:
370 pll_output = 100000000;
371 break;
375 * Detect PLL input clock.
376 * On some systems, where PCI bus is running at non-standard clock rate
377 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
378 * PDC20268 and newer chips employ PLL circuit to help correct timing
379 * registers setting.
381 pll_input = detect_pll_input_clock(dma_base);
382 printk("%s: PLL input clock is %ld kHz\n", name, pll_input / 1000);
384 /* Sanity check */
385 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
386 printk(KERN_ERR "%s: Bad PLL input clock %ld Hz, giving up!\n",
387 name, pll_input);
388 goto out;
391 #ifdef DEBUG
392 DBG("pll_output is %ld Hz\n", pll_output);
394 /* Show the current clock value of PLL control register
395 * (maybe already configured by the BIOS)
397 outb(0x02, sec_dma_base + 0x01);
398 pll_ctl0 = inb(sec_dma_base + 0x03);
399 outb(0x03, sec_dma_base + 0x01);
400 pll_ctl1 = inb(sec_dma_base + 0x03);
402 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
403 #endif
406 * Calculate the ratio of F, R and NO
407 * POUT = (F + 2) / (( R + 2) * NO)
409 ratio = pll_output / (pll_input / 1000);
410 if (ratio < 8600L) { /* 8.6x */
411 /* Using NO = 0x01, R = 0x0d */
412 r = 0x0d;
413 } else if (ratio < 12900L) { /* 12.9x */
414 /* Using NO = 0x01, R = 0x08 */
415 r = 0x08;
416 } else if (ratio < 16100L) { /* 16.1x */
417 /* Using NO = 0x01, R = 0x06 */
418 r = 0x06;
419 } else if (ratio < 64000L) { /* 64x */
420 r = 0x00;
421 } else {
422 /* Invalid ratio */
423 printk(KERN_ERR "%s: Bad ratio %ld, giving up!\n", name, ratio);
424 goto out;
427 f = (ratio * (r + 2)) / 1000 - 2;
429 DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
431 if (unlikely(f < 0 || f > 127)) {
432 /* Invalid F */
433 printk(KERN_ERR "%s: F[%d] invalid!\n", name, f);
434 goto out;
437 pll_ctl0 = (u8) f;
438 pll_ctl1 = (u8) r;
440 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
442 outb(0x02, sec_dma_base + 0x01);
443 outb(pll_ctl0, sec_dma_base + 0x03);
444 outb(0x03, sec_dma_base + 0x01);
445 outb(pll_ctl1, sec_dma_base + 0x03);
447 /* Wait the PLL circuit to be stable */
448 mdelay(30);
450 #ifdef DEBUG
452 * Show the current clock value of PLL control register
454 outb(0x02, sec_dma_base + 0x01);
455 pll_ctl0 = inb(sec_dma_base + 0x03);
456 outb(0x03, sec_dma_base + 0x01);
457 pll_ctl1 = inb(sec_dma_base + 0x03);
459 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
460 #endif
462 out:
463 return dev->irq;
466 static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
468 hwif->set_pio_mode = &pdcnew_set_pio_mode;
469 hwif->set_dma_mode = &pdcnew_set_mode;
471 hwif->quirkproc = &pdcnew_quirkproc;
472 hwif->resetproc = &pdcnew_reset;
474 if (hwif->dma_base == 0)
475 return;
477 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
478 hwif->cbl = pdcnew_cable_detect(hwif);
481 static struct pci_dev * __devinit pdc20270_get_dev2(struct pci_dev *dev)
483 struct pci_dev *dev2;
485 dev2 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn) + 1,
486 PCI_FUNC(dev->devfn)));
488 if (dev2 &&
489 dev2->vendor == dev->vendor &&
490 dev2->device == dev->device) {
492 if (dev2->irq != dev->irq) {
493 dev2->irq = dev->irq;
494 printk(KERN_INFO "PDC20270: PCI config space "
495 "interrupt fixed\n");
498 return dev2;
501 return NULL;
504 #define DECLARE_PDCNEW_DEV(name_str, udma) \
506 .name = name_str, \
507 .init_chipset = init_chipset_pdcnew, \
508 .init_hwif = init_hwif_pdc202new, \
509 .host_flags = IDE_HFLAG_POST_SET_MODE | \
510 IDE_HFLAG_ERROR_STOPS_FIFO | \
511 IDE_HFLAG_OFF_BOARD, \
512 .pio_mask = ATA_PIO4, \
513 .mwdma_mask = ATA_MWDMA2, \
514 .udma_mask = udma, \
517 static const struct ide_port_info pdcnew_chipsets[] __devinitdata = {
518 /* 0 */ DECLARE_PDCNEW_DEV("PDC20268", ATA_UDMA5),
519 /* 1 */ DECLARE_PDCNEW_DEV("PDC20269", ATA_UDMA6),
520 /* 2 */ DECLARE_PDCNEW_DEV("PDC20270", ATA_UDMA5),
521 /* 3 */ DECLARE_PDCNEW_DEV("PDC20271", ATA_UDMA6),
522 /* 4 */ DECLARE_PDCNEW_DEV("PDC20275", ATA_UDMA6),
523 /* 5 */ DECLARE_PDCNEW_DEV("PDC20276", ATA_UDMA6),
524 /* 6 */ DECLARE_PDCNEW_DEV("PDC20277", ATA_UDMA6),
528 * pdc202new_init_one - called when a pdc202xx is found
529 * @dev: the pdc202new device
530 * @id: the matching pci id
532 * Called when the PCI registration layer (or the IDE initialization)
533 * finds a device matching our IDE device tables.
536 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
538 const struct ide_port_info *d;
539 struct pci_dev *bridge = dev->bus->self;
540 u8 idx = id->driver_data;
542 d = &pdcnew_chipsets[idx];
544 if (idx == 2 && bridge &&
545 bridge->vendor == PCI_VENDOR_ID_DEC &&
546 bridge->device == PCI_DEVICE_ID_DEC_21150) {
547 struct pci_dev *dev2;
549 if (PCI_SLOT(dev->devfn) & 2)
550 return -ENODEV;
552 dev2 = pdc20270_get_dev2(dev);
554 if (dev2) {
555 int ret = ide_setup_pci_devices(dev, dev2, d);
556 if (ret < 0)
557 pci_dev_put(dev2);
558 return ret;
562 if (idx == 5 && bridge &&
563 bridge->vendor == PCI_VENDOR_ID_INTEL &&
564 (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
565 bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
566 printk(KERN_INFO "PDC20276: attached to I2O RAID controller, "
567 "skipping\n");
568 return -ENODEV;
571 return ide_setup_pci_device(dev, d);
574 static const struct pci_device_id pdc202new_pci_tbl[] = {
575 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20268), 0 },
576 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20269), 1 },
577 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20270), 2 },
578 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20271), 3 },
579 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20275), 4 },
580 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20276), 5 },
581 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20277), 6 },
582 { 0, },
584 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
586 static struct pci_driver driver = {
587 .name = "Promise_IDE",
588 .id_table = pdc202new_pci_tbl,
589 .probe = pdc202new_init_one,
592 static int __init pdc202new_ide_init(void)
594 return ide_pci_register_driver(&driver);
597 module_init(pdc202new_ide_init);
599 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
600 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
601 MODULE_LICENSE("GPL");