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_dma_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 if (speed >= XFER_UDMA_0) {
166 set_indexed_reg(hwif, 0x10 + adj,
167 udma_timings[mode].reg10);
168 set_indexed_reg(hwif, 0x11 + adj,
169 udma_timings[mode].reg11);
170 set_indexed_reg(hwif, 0x12 + adj,
171 udma_timings[mode].reg12);
173 set_indexed_reg(hwif, 0x0e + adj,
174 mwdma_timings[mode].reg0e);
175 set_indexed_reg(hwif, 0x0f + adj,
176 mwdma_timings[mode].reg0f);
178 } else if (speed == XFER_UDMA_2) {
179 /* Set tHOLD bit to 0 if using UDMA mode 2 */
180 u8 tmp = get_indexed_reg(hwif, 0x10 + adj);
182 set_indexed_reg(hwif, 0x10 + adj, tmp & 0x7f);
186 static void pdcnew_set_pio_mode(ide_drive_t *drive, const u8 pio)
188 ide_hwif_t *hwif = drive->hwif;
189 u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
191 if (max_dma_rate(hwif->pci_dev) == 4) {
192 set_indexed_reg(hwif, 0x0c + adj, pio_timings[pio].reg0c);
193 set_indexed_reg(hwif, 0x0d + adj, pio_timings[pio].reg0d);
194 set_indexed_reg(hwif, 0x13 + adj, pio_timings[pio].reg13);
198 static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
200 if (get_indexed_reg(hwif, 0x0b) & 0x04)
201 return ATA_CBL_PATA40;
203 return ATA_CBL_PATA80;
206 static void pdcnew_quirkproc(ide_drive_t *drive)
208 const char **list, *model = drive->id->model;
210 for (list = pdc_quirk_drives; *list != NULL; list++)
211 if (strstr(model, *list) != NULL) {
212 drive->quirk_list = 2;
216 drive->quirk_list = 0;
219 static void pdcnew_reset(ide_drive_t *drive)
222 * Deleted this because it is redundant from the caller.
224 printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
225 HWIF(drive)->channel ? "Secondary" : "Primary");
229 * read_counter - Read the byte count registers
230 * @dma_base: for the port address
232 static long __devinit read_counter(u32 dma_base)
234 u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
235 u8 cnt0, cnt1, cnt2, cnt3;
236 long count = 0, last;
242 /* Read the current count */
243 outb(0x20, pri_dma_base + 0x01);
244 cnt0 = inb(pri_dma_base + 0x03);
245 outb(0x21, pri_dma_base + 0x01);
246 cnt1 = inb(pri_dma_base + 0x03);
247 outb(0x20, sec_dma_base + 0x01);
248 cnt2 = inb(sec_dma_base + 0x03);
249 outb(0x21, sec_dma_base + 0x01);
250 cnt3 = inb(sec_dma_base + 0x03);
252 count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
255 * The 30-bit decrementing counter is read in 4 pieces.
256 * Incorrect value may be read when the most significant bytes
259 } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
261 DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
262 cnt0, cnt1, cnt2, cnt3);
268 * detect_pll_input_clock - Detect the PLL input clock in Hz.
269 * @dma_base: for the port address
270 * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
272 static long __devinit detect_pll_input_clock(unsigned long dma_base)
274 struct timeval start_time, end_time;
275 long start_count, end_count;
276 long pll_input, usec_elapsed;
279 start_count = read_counter(dma_base);
280 do_gettimeofday(&start_time);
282 /* Start the test mode */
283 outb(0x01, dma_base + 0x01);
284 scr1 = inb(dma_base + 0x03);
285 DBG("scr1[%02X]\n", scr1);
286 outb(scr1 | 0x40, dma_base + 0x03);
288 /* Let the counter run for 10 ms. */
291 end_count = read_counter(dma_base);
292 do_gettimeofday(&end_time);
294 /* Stop the test mode */
295 outb(0x01, dma_base + 0x01);
296 scr1 = inb(dma_base + 0x03);
297 DBG("scr1[%02X]\n", scr1);
298 outb(scr1 & ~0x40, dma_base + 0x03);
301 * Calculate the input clock in Hz
302 * (the clock counter is 30 bit wide and counts down)
304 usec_elapsed = (end_time.tv_sec - start_time.tv_sec) * 1000000 +
305 (end_time.tv_usec - start_time.tv_usec);
306 pll_input = ((start_count - end_count) & 0x3fffffff) / 10 *
307 (10000000 / usec_elapsed);
309 DBG("start[%ld] end[%ld]\n", start_count, end_count);
314 #ifdef CONFIG_PPC_PMAC
315 static void __devinit apple_kiwi_init(struct pci_dev *pdev)
317 struct device_node *np = pci_device_to_OF_node(pdev);
320 if (np == NULL || !of_device_is_compatible(np, "kiwi-root"))
323 if (pdev->revision >= 0x03) {
324 /* Setup chip magic config stuff (from darwin) */
325 pci_read_config_byte (pdev, 0x40, &conf);
326 pci_write_config_byte(pdev, 0x40, (conf | 0x01));
329 #endif /* CONFIG_PPC_PMAC */
331 static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const char *name)
333 unsigned long dma_base = pci_resource_start(dev, 4);
334 unsigned long sec_dma_base = dma_base + 0x08;
335 long pll_input, pll_output, ratio;
337 u8 pll_ctl0, pll_ctl1;
342 #ifdef CONFIG_PPC_PMAC
343 apple_kiwi_init(dev);
346 /* Calculate the required PLL output frequency */
347 switch(max_dma_rate(dev)) {
348 case 4: /* it's 133 MHz for Ultra133 chips */
349 pll_output = 133333333;
351 case 3: /* and 100 MHz for Ultra100 chips */
353 pll_output = 100000000;
358 * Detect PLL input clock.
359 * On some systems, where PCI bus is running at non-standard clock rate
360 * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
361 * PDC20268 and newer chips employ PLL circuit to help correct timing
364 pll_input = detect_pll_input_clock(dma_base);
365 printk("%s: PLL input clock is %ld kHz\n", name, pll_input / 1000);
368 if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
369 printk(KERN_ERR "%s: Bad PLL input clock %ld Hz, giving up!\n",
375 DBG("pll_output is %ld Hz\n", pll_output);
377 /* Show the current clock value of PLL control register
378 * (maybe already configured by the BIOS)
380 outb(0x02, sec_dma_base + 0x01);
381 pll_ctl0 = inb(sec_dma_base + 0x03);
382 outb(0x03, sec_dma_base + 0x01);
383 pll_ctl1 = inb(sec_dma_base + 0x03);
385 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
389 * Calculate the ratio of F, R and NO
390 * POUT = (F + 2) / (( R + 2) * NO)
392 ratio = pll_output / (pll_input / 1000);
393 if (ratio < 8600L) { /* 8.6x */
394 /* Using NO = 0x01, R = 0x0d */
396 } else if (ratio < 12900L) { /* 12.9x */
397 /* Using NO = 0x01, R = 0x08 */
399 } else if (ratio < 16100L) { /* 16.1x */
400 /* Using NO = 0x01, R = 0x06 */
402 } else if (ratio < 64000L) { /* 64x */
406 printk(KERN_ERR "%s: Bad ratio %ld, giving up!\n", name, 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: F[%d] invalid!\n", name, f);
423 DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
425 outb(0x02, sec_dma_base + 0x01);
426 outb(pll_ctl0, sec_dma_base + 0x03);
427 outb(0x03, sec_dma_base + 0x01);
428 outb(pll_ctl1, sec_dma_base + 0x03);
430 /* Wait the PLL circuit to be stable */
435 * Show the current clock value of PLL control register
437 outb(0x02, sec_dma_base + 0x01);
438 pll_ctl0 = inb(sec_dma_base + 0x03);
439 outb(0x03, sec_dma_base + 0x01);
440 pll_ctl1 = inb(sec_dma_base + 0x03);
442 DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
449 static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
451 hwif->set_pio_mode = &pdcnew_set_pio_mode;
452 hwif->set_dma_mode = &pdcnew_set_dma_mode;
454 hwif->quirkproc = &pdcnew_quirkproc;
455 hwif->resetproc = &pdcnew_reset;
457 if (hwif->dma_base == 0)
460 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
461 hwif->cbl = pdcnew_cable_detect(hwif);
464 static struct pci_dev * __devinit pdc20270_get_dev2(struct pci_dev *dev)
466 struct pci_dev *dev2;
468 dev2 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn) + 1,
469 PCI_FUNC(dev->devfn)));
472 dev2->vendor == dev->vendor &&
473 dev2->device == dev->device) {
475 if (dev2->irq != dev->irq) {
476 dev2->irq = dev->irq;
477 printk(KERN_INFO "PDC20270: PCI config space "
478 "interrupt fixed\n");
487 #define DECLARE_PDCNEW_DEV(name_str, udma) \
490 .init_chipset = init_chipset_pdcnew, \
491 .init_hwif = init_hwif_pdc202new, \
492 .host_flags = IDE_HFLAG_POST_SET_MODE | \
493 IDE_HFLAG_ERROR_STOPS_FIFO | \
494 IDE_HFLAG_OFF_BOARD, \
495 .pio_mask = ATA_PIO4, \
496 .mwdma_mask = ATA_MWDMA2, \
500 static const struct ide_port_info pdcnew_chipsets[] __devinitdata = {
501 /* 0 */ DECLARE_PDCNEW_DEV("PDC20268", ATA_UDMA5),
502 /* 1 */ DECLARE_PDCNEW_DEV("PDC20269", ATA_UDMA6),
503 /* 2 */ DECLARE_PDCNEW_DEV("PDC20270", ATA_UDMA5),
504 /* 3 */ DECLARE_PDCNEW_DEV("PDC20271", ATA_UDMA6),
505 /* 4 */ DECLARE_PDCNEW_DEV("PDC20275", ATA_UDMA6),
506 /* 5 */ DECLARE_PDCNEW_DEV("PDC20276", ATA_UDMA6),
507 /* 6 */ DECLARE_PDCNEW_DEV("PDC20277", ATA_UDMA6),
511 * pdc202new_init_one - called when a pdc202xx is found
512 * @dev: the pdc202new device
513 * @id: the matching pci id
515 * Called when the PCI registration layer (or the IDE initialization)
516 * finds a device matching our IDE device tables.
519 static int __devinit pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
521 const struct ide_port_info *d;
522 struct pci_dev *bridge = dev->bus->self;
523 u8 idx = id->driver_data;
525 d = &pdcnew_chipsets[idx];
527 if (idx == 2 && bridge &&
528 bridge->vendor == PCI_VENDOR_ID_DEC &&
529 bridge->device == PCI_DEVICE_ID_DEC_21150) {
530 struct pci_dev *dev2;
532 if (PCI_SLOT(dev->devfn) & 2)
535 dev2 = pdc20270_get_dev2(dev);
538 int ret = ide_setup_pci_devices(dev, dev2, d);
545 if (idx == 5 && bridge &&
546 bridge->vendor == PCI_VENDOR_ID_INTEL &&
547 (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
548 bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
549 printk(KERN_INFO "PDC20276: attached to I2O RAID controller, "
554 return ide_setup_pci_device(dev, d);
557 static const struct pci_device_id pdc202new_pci_tbl[] = {
558 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20268), 0 },
559 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20269), 1 },
560 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20270), 2 },
561 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20271), 3 },
562 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20275), 4 },
563 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20276), 5 },
564 { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20277), 6 },
567 MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
569 static struct pci_driver driver = {
570 .name = "Promise_IDE",
571 .id_table = pdc202new_pci_tbl,
572 .probe = pdc202new_init_one,
575 static int __init pdc202new_ide_init(void)
577 return ide_pci_register_driver(&driver);
580 module_init(pdc202new_ide_init);
582 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
583 MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
584 MODULE_LICENSE("GPL");