2 * Copyright (C) 1998-2000 Michel Aubry, Maintainer
3 * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
4 * Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer
6 * Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org)
7 * May be copied or modified under the terms of the GNU General Public License
8 * Copyright (C) 2002 Alan Cox <alan@redhat.com>
9 * ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
10 * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
11 * Copyright (C) 2007 Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
13 * (U)DMA capable version of ali 1533/1543(C), 1535(D)
15 **********************************************************************
16 * 9/7/99 --Parts from the above author are included and need to be
17 * converted into standard interface, once I finish the thought.
20 * Don't use LBA48 mode on ALi <= 0xC4
21 * Don't poke 0x79 with a non ALi northbridge
22 * Don't flip undefined bits on newer chipsets (fix Fujitsu laptop hang)
23 * Allow UDMA6 on revisions > 0xC4
26 * Chipset documentation available under NDA only
30 #include <linux/module.h>
31 #include <linux/types.h>
32 #include <linux/kernel.h>
33 #include <linux/pci.h>
34 #include <linux/hdreg.h>
35 #include <linux/ide.h>
36 #include <linux/init.h>
37 #include <linux/dmi.h>
42 * ALi devices are not plug in. Otherwise these static values would
43 * need to go. They ought to go away anyway
46 static u8 m5229_revision;
47 static u8 chip_is_1543c_e;
48 static struct pci_dev *isa_dev;
51 * ali_set_pio_mode - set host controller for PIO mode
53 * @pio: PIO mode number
55 * Program the controller for the given PIO mode.
58 static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
60 ide_hwif_t *hwif = HWIF(drive);
61 struct pci_dev *dev = to_pci_dev(hwif->dev);
62 int s_time, a_time, c_time;
63 u8 s_clc, a_clc, r_clc;
65 int bus_speed = ide_pci_clk ? ide_pci_clk : system_bus_clock();
66 int port = hwif->channel ? 0x5c : 0x58;
67 int portFIFO = hwif->channel ? 0x55 : 0x54;
69 int unit = drive->select.b.unit & 1;
71 s_time = ide_pio_timings[pio].setup_time;
72 a_time = ide_pio_timings[pio].active_time;
73 if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
75 if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8)
77 c_time = ide_pio_timings[pio].cycle_time;
80 if ((r_clc = ((c_time - s_time - a_time) * bus_speed + 999) / 1000) >= 16)
84 if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) {
90 local_irq_save(flags);
93 * PIO mode => ATA FIFO on, ATAPI FIFO off
95 pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
96 if (drive->media==ide_disk) {
98 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
100 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
104 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
106 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
110 pci_write_config_byte(dev, port, s_clc);
111 pci_write_config_byte(dev, port+drive->select.b.unit+2, (a_clc << 4) | r_clc);
112 local_irq_restore(flags);
116 * { 70, 165, 365 }, PIO Mode 0
117 * { 50, 125, 208 }, PIO Mode 1
118 * { 30, 100, 110 }, PIO Mode 2
119 * { 30, 80, 70 }, PIO Mode 3 with IORDY
120 * { 25, 70, 25 }, PIO Mode 4 with IORDY ns
121 * { 20, 50, 30 } PIO Mode 5 with IORDY (nonstandard)
126 * ali_udma_filter - compute UDMA mask
129 * Return available UDMA modes.
131 * The actual rules for the ALi are:
132 * No UDMA on revisions <= 0x20
133 * Disk only for revisions < 0xC2
134 * Not WDC drives for revisions < 0xC2
136 * FIXME: WDC ifdef needs to die
139 static u8 ali_udma_filter(ide_drive_t *drive)
141 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
142 if (drive->media != ide_disk)
144 #ifndef CONFIG_WDC_ALI15X3
145 if (chip_is_1543c_e && strstr(drive->id->model, "WDC "))
150 return drive->hwif->ultra_mask;
154 * ali_set_dma_mode - set host controller for DMA mode
158 * Configure the hardware for the desired IDE transfer mode.
161 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
163 ide_hwif_t *hwif = HWIF(drive);
164 struct pci_dev *dev = to_pci_dev(hwif->dev);
166 u8 unit = (drive->select.b.unit & 0x01);
168 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
170 if (speed == XFER_UDMA_6)
173 if (speed < XFER_UDMA_0) {
174 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
176 * clear "ultra enable" bit
178 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
179 tmpbyte &= ultra_enable;
180 pci_write_config_byte(dev, m5229_udma, tmpbyte);
183 * FIXME: Oh, my... DMA timings are never set.
186 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
187 tmpbyte &= (0x0f << ((1-unit) << 2));
189 * enable ultra dma and set timing
191 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
192 pci_write_config_byte(dev, m5229_udma, tmpbyte);
193 if (speed >= XFER_UDMA_3) {
194 pci_read_config_byte(dev, 0x4b, &tmpbyte);
196 pci_write_config_byte(dev, 0x4b, tmpbyte);
202 * ali15x3_dma_setup - begin a DMA phase
203 * @drive: target device
205 * Returns 1 if the DMA cannot be performed, zero on success.
208 static int ali15x3_dma_setup(ide_drive_t *drive)
210 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
211 if (rq_data_dir(drive->hwif->hwgroup->rq))
212 return 1; /* try PIO instead of DMA */
214 return ide_dma_setup(drive);
218 * init_chipset_ali15x3 - Initialise an ALi IDE controller
220 * @name: Name of the controller
222 * This function initializes the ALI IDE controller and where
223 * appropriate also sets up the 1533 southbridge.
226 static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const char *name)
230 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
232 m5229_revision = dev->revision;
234 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
236 local_irq_save(flags);
238 if (m5229_revision < 0xC2) {
240 * revision 0x20 (1543-E, 1543-F)
241 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
242 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
244 pci_read_config_byte(dev, 0x4b, &tmpbyte);
248 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
250 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
252 if (m5229_revision >= 0x20 && isa_dev) {
253 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
254 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
260 * 1543C-B?, 1535, 1535D, 1553
261 * Note 1: not all "motherboard" support this detection
262 * Note 2: if no udma 66 device, the detection may "error".
263 * but in this case, we will not set the device to
264 * ultra 66, the detection result is not important
268 * enable "Cable Detection", m5229, 0x4b, bit3
270 pci_read_config_byte(dev, 0x4b, &tmpbyte);
271 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
274 * We should only tune the 1533 enable if we are using an ALi
275 * North bridge. We might have no north found on some zany
276 * box without a device at 0:0.0. The ALi bridge will be at
277 * 0:0.0 so if we didn't find one we know what is cooking.
279 if (north && north->vendor != PCI_VENDOR_ID_AL)
282 if (m5229_revision < 0xC5 && isa_dev)
285 * set south-bridge's enable bit, m1533, 0x79
288 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
289 if (m5229_revision == 0xC2) {
291 * 1543C-B0 (m1533, 0x79, bit 2)
293 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
294 } else if (m5229_revision >= 0xC3) {
296 * 1553/1535 (m1533, 0x79, bit 1)
298 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
304 * CD_ROM DMA on (m5229, 0x53, bit0)
305 * Enable this bit even if we want to use PIO.
306 * PIO FIFO off (m5229, 0x53, bit1)
307 * The hardware will use 0x54h and 0x55h to control PIO FIFO.
308 * (Not on later devices it seems)
310 * 0x53 changes meaning on later revs - we must no touch
311 * bit 1 on them. Need to check if 0x20 is the right break.
313 if (m5229_revision >= 0x20) {
314 pci_read_config_byte(dev, 0x53, &tmpbyte);
316 if (m5229_revision <= 0x20)
317 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
318 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
323 pci_write_config_byte(dev, 0x53, tmpbyte);
326 pci_dev_put(isa_dev);
327 local_irq_restore(flags);
332 * Cable special cases
335 static const struct dmi_system_id cable_dmi_table[] = {
337 .ident = "HP Pavilion N5430",
339 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
340 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
344 .ident = "Toshiba Satellite S1800-814",
346 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
347 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
353 static int ali_cable_override(struct pci_dev *pdev)
356 if (pdev->subsystem_vendor == 0x10CF &&
357 pdev->subsystem_device == 0x10AF)
360 /* Mitac 8317 (Winbook-A) and relatives */
361 if (pdev->subsystem_vendor == 0x1071 &&
362 pdev->subsystem_device == 0x8317)
366 if (dmi_check_system(cable_dmi_table))
373 * ali_cable_detect - cable detection
374 * @hwif: IDE interface
376 * This checks if the controller and the cable are capable
377 * of UDMA66 transfers. It doesn't check the drives.
378 * But see note 2 below!
380 * FIXME: frobs bits that are not defined on newer ALi devicea
383 static u8 __devinit ali_cable_detect(ide_hwif_t *hwif)
385 struct pci_dev *dev = to_pci_dev(hwif->dev);
387 u8 cbl = ATA_CBL_PATA40, tmpbyte;
389 local_irq_save(flags);
391 if (m5229_revision >= 0xC2) {
393 * m5229 80-pin cable detection (from Host View)
395 * 0x4a bit0 is 0 => primary channel has 80-pin
396 * 0x4a bit1 is 0 => secondary channel has 80-pin
398 * Certain laptops use short but suitable cables
399 * and don't implement the detect logic.
401 if (ali_cable_override(dev))
402 cbl = ATA_CBL_PATA40_SHORT;
404 pci_read_config_byte(dev, 0x4a, &tmpbyte);
405 if ((tmpbyte & (1 << hwif->channel)) == 0)
406 cbl = ATA_CBL_PATA80;
410 local_irq_restore(flags);
415 #ifndef CONFIG_SPARC64
417 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
418 * @hwif: interface to configure
420 * Obtain the IRQ tables for an ALi based IDE solution on the PC
421 * class platforms. This part of the code isn't applicable to the
425 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
427 struct pci_dev *dev = to_pci_dev(hwif->dev);
429 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
430 1, 11, 0, 12, 0, 14, 0, 15 };
433 if (dev->device == PCI_DEVICE_ID_AL_M5229)
434 hwif->irq = hwif->channel ? 15 : 14;
438 * read IDE interface control
440 pci_read_config_byte(isa_dev, 0x58, &ideic);
443 ideic = ideic & 0x03;
445 /* get IRQ for IDE Controller */
446 if ((hwif->channel && ideic == 0x03) ||
447 (!hwif->channel && !ideic)) {
449 * get SIRQ1 routing table
451 pci_read_config_byte(isa_dev, 0x44, &inmir);
452 inmir = inmir & 0x0f;
453 irq = irq_routing_table[inmir];
454 } else if (hwif->channel && !(ideic & 0x01)) {
456 * get SIRQ2 routing table
458 pci_read_config_byte(isa_dev, 0x75, &inmir);
459 inmir = inmir & 0x0f;
460 irq = irq_routing_table[inmir];
469 * init_dma_ali15x3 - set up DMA on ALi15x3
470 * @hwif: IDE interface
473 * Set up the DMA functionality on the ALi 15x3.
476 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
477 const struct ide_port_info *d)
479 struct pci_dev *dev = to_pci_dev(hwif->dev);
480 unsigned long base = ide_pci_dma_base(hwif, d);
482 if (base == 0 || ide_pci_set_master(dev, d->name) < 0)
486 outb(inb(base + 2) & 0x60, base + 2);
488 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
489 hwif->name, base, base + 7);
491 if (ide_allocate_dma_engine(hwif))
494 ide_setup_dma(hwif, base);
499 static const struct ide_port_ops ali_port_ops = {
500 .set_pio_mode = ali_set_pio_mode,
501 .set_dma_mode = ali_set_dma_mode,
502 .udma_filter = ali_udma_filter,
503 .cable_detect = ali_cable_detect,
506 static const struct ide_dma_ops ali_dma_ops = {
507 .dma_host_set = ide_dma_host_set,
508 .dma_setup = ali15x3_dma_setup,
509 .dma_exec_cmd = ide_dma_exec_cmd,
510 .dma_start = ide_dma_start,
511 .dma_end = __ide_dma_end,
512 .dma_test_irq = ide_dma_test_irq,
513 .dma_lost_irq = ide_dma_lost_irq,
514 .dma_timeout = ide_dma_timeout,
517 static const struct ide_port_info ali15x3_chipset __devinitdata = {
519 .init_chipset = init_chipset_ali15x3,
520 #ifndef CONFIG_SPARC64
521 .init_hwif = init_hwif_ali15x3,
523 .init_dma = init_dma_ali15x3,
524 .port_ops = &ali_port_ops,
525 .pio_mask = ATA_PIO5,
526 .swdma_mask = ATA_SWDMA2,
527 .mwdma_mask = ATA_MWDMA2,
531 * alim15x3_init_one - set up an ALi15x3 IDE controller
532 * @dev: PCI device to set up
534 * Perform the actual set up for an ALi15x3 that has been found by the
538 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
540 static struct pci_device_id ati_rs100[] = {
541 { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100) },
545 struct ide_port_info d = ali15x3_chipset;
546 u8 rev = dev->revision, idx = id->driver_data;
548 if (pci_dev_present(ati_rs100))
549 printk(KERN_WARNING "alim15x3: ATI Radeon IGP Northbridge is not yet fully tested.\n");
551 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
553 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
557 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
560 d.udma_mask = ATA_UDMA2;
561 else if (rev == 0xC2 || rev == 0xC3)
562 d.udma_mask = ATA_UDMA4;
563 else if (rev == 0xC4)
564 d.udma_mask = ATA_UDMA5;
566 d.udma_mask = ATA_UDMA6;
568 d.dma_ops = &ali_dma_ops;
570 d.host_flags |= IDE_HFLAG_NO_DMA;
572 d.mwdma_mask = d.swdma_mask = 0;
576 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
578 return ide_setup_pci_device(dev, &d);
582 static const struct pci_device_id alim15x3_pci_tbl[] = {
583 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
584 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
587 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
589 static struct pci_driver driver = {
590 .name = "ALI15x3_IDE",
591 .id_table = alim15x3_pci_tbl,
592 .probe = alim15x3_init_one,
595 static int __init ali15x3_ide_init(void)
597 return ide_pci_register_driver(&driver);
600 module_init(ali15x3_ide_init);
602 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
603 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
604 MODULE_LICENSE("GPL");