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;
79 if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) {
85 local_irq_save(flags);
88 * PIO mode => ATA FIFO on, ATAPI FIFO off
90 pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
91 if (drive->media==ide_disk) {
93 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
95 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
99 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
101 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
105 pci_write_config_byte(dev, port, s_clc);
106 pci_write_config_byte(dev, port+drive->select.b.unit+2, (a_clc << 4) | r_clc);
107 local_irq_restore(flags);
111 * ali_udma_filter - compute UDMA mask
114 * Return available UDMA modes.
116 * The actual rules for the ALi are:
117 * No UDMA on revisions <= 0x20
118 * Disk only for revisions < 0xC2
119 * Not WDC drives for revisions < 0xC2
121 * FIXME: WDC ifdef needs to die
124 static u8 ali_udma_filter(ide_drive_t *drive)
126 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
127 if (drive->media != ide_disk)
129 #ifndef CONFIG_WDC_ALI15X3
130 if (chip_is_1543c_e && strstr(drive->id->model, "WDC "))
135 return drive->hwif->ultra_mask;
139 * ali_set_dma_mode - set host controller for DMA mode
143 * Configure the hardware for the desired IDE transfer mode.
146 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
148 ide_hwif_t *hwif = HWIF(drive);
149 struct pci_dev *dev = to_pci_dev(hwif->dev);
151 u8 unit = (drive->select.b.unit & 0x01);
153 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
155 if (speed == XFER_UDMA_6)
158 if (speed < XFER_UDMA_0) {
159 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
161 * clear "ultra enable" bit
163 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
164 tmpbyte &= ultra_enable;
165 pci_write_config_byte(dev, m5229_udma, tmpbyte);
168 * FIXME: Oh, my... DMA timings are never set.
171 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
172 tmpbyte &= (0x0f << ((1-unit) << 2));
174 * enable ultra dma and set timing
176 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
177 pci_write_config_byte(dev, m5229_udma, tmpbyte);
178 if (speed >= XFER_UDMA_3) {
179 pci_read_config_byte(dev, 0x4b, &tmpbyte);
181 pci_write_config_byte(dev, 0x4b, tmpbyte);
187 * ali15x3_dma_setup - begin a DMA phase
188 * @drive: target device
190 * Returns 1 if the DMA cannot be performed, zero on success.
193 static int ali15x3_dma_setup(ide_drive_t *drive)
195 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
196 if (rq_data_dir(drive->hwif->hwgroup->rq))
197 return 1; /* try PIO instead of DMA */
199 return ide_dma_setup(drive);
203 * init_chipset_ali15x3 - Initialise an ALi IDE controller
205 * @name: Name of the controller
207 * This function initializes the ALI IDE controller and where
208 * appropriate also sets up the 1533 southbridge.
211 static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const char *name)
215 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
217 m5229_revision = dev->revision;
219 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
221 local_irq_save(flags);
223 if (m5229_revision < 0xC2) {
225 * revision 0x20 (1543-E, 1543-F)
226 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
227 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
229 pci_read_config_byte(dev, 0x4b, &tmpbyte);
233 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
235 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
237 if (m5229_revision >= 0x20 && isa_dev) {
238 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
239 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
245 * 1543C-B?, 1535, 1535D, 1553
246 * Note 1: not all "motherboard" support this detection
247 * Note 2: if no udma 66 device, the detection may "error".
248 * but in this case, we will not set the device to
249 * ultra 66, the detection result is not important
253 * enable "Cable Detection", m5229, 0x4b, bit3
255 pci_read_config_byte(dev, 0x4b, &tmpbyte);
256 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
259 * We should only tune the 1533 enable if we are using an ALi
260 * North bridge. We might have no north found on some zany
261 * box without a device at 0:0.0. The ALi bridge will be at
262 * 0:0.0 so if we didn't find one we know what is cooking.
264 if (north && north->vendor != PCI_VENDOR_ID_AL)
267 if (m5229_revision < 0xC5 && isa_dev)
270 * set south-bridge's enable bit, m1533, 0x79
273 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
274 if (m5229_revision == 0xC2) {
276 * 1543C-B0 (m1533, 0x79, bit 2)
278 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
279 } else if (m5229_revision >= 0xC3) {
281 * 1553/1535 (m1533, 0x79, bit 1)
283 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
289 * CD_ROM DMA on (m5229, 0x53, bit0)
290 * Enable this bit even if we want to use PIO.
291 * PIO FIFO off (m5229, 0x53, bit1)
292 * The hardware will use 0x54h and 0x55h to control PIO FIFO.
293 * (Not on later devices it seems)
295 * 0x53 changes meaning on later revs - we must no touch
296 * bit 1 on them. Need to check if 0x20 is the right break.
298 if (m5229_revision >= 0x20) {
299 pci_read_config_byte(dev, 0x53, &tmpbyte);
301 if (m5229_revision <= 0x20)
302 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
303 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
308 pci_write_config_byte(dev, 0x53, tmpbyte);
311 pci_dev_put(isa_dev);
312 local_irq_restore(flags);
317 * Cable special cases
320 static const struct dmi_system_id cable_dmi_table[] = {
322 .ident = "HP Pavilion N5430",
324 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
325 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
329 .ident = "Toshiba Satellite S1800-814",
331 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
332 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
338 static int ali_cable_override(struct pci_dev *pdev)
341 if (pdev->subsystem_vendor == 0x10CF &&
342 pdev->subsystem_device == 0x10AF)
345 /* Mitac 8317 (Winbook-A) and relatives */
346 if (pdev->subsystem_vendor == 0x1071 &&
347 pdev->subsystem_device == 0x8317)
351 if (dmi_check_system(cable_dmi_table))
358 * ali_cable_detect - cable detection
359 * @hwif: IDE interface
361 * This checks if the controller and the cable are capable
362 * of UDMA66 transfers. It doesn't check the drives.
363 * But see note 2 below!
365 * FIXME: frobs bits that are not defined on newer ALi devicea
368 static u8 __devinit ali_cable_detect(ide_hwif_t *hwif)
370 struct pci_dev *dev = to_pci_dev(hwif->dev);
372 u8 cbl = ATA_CBL_PATA40, tmpbyte;
374 local_irq_save(flags);
376 if (m5229_revision >= 0xC2) {
378 * m5229 80-pin cable detection (from Host View)
380 * 0x4a bit0 is 0 => primary channel has 80-pin
381 * 0x4a bit1 is 0 => secondary channel has 80-pin
383 * Certain laptops use short but suitable cables
384 * and don't implement the detect logic.
386 if (ali_cable_override(dev))
387 cbl = ATA_CBL_PATA40_SHORT;
389 pci_read_config_byte(dev, 0x4a, &tmpbyte);
390 if ((tmpbyte & (1 << hwif->channel)) == 0)
391 cbl = ATA_CBL_PATA80;
395 local_irq_restore(flags);
400 #if !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC)
402 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
403 * @hwif: interface to configure
405 * Obtain the IRQ tables for an ALi based IDE solution on the PC
406 * class platforms. This part of the code isn't applicable to the
407 * Sparc and PowerPC systems.
410 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
412 struct pci_dev *dev = to_pci_dev(hwif->dev);
414 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
415 1, 11, 0, 12, 0, 14, 0, 15 };
418 if (dev->device == PCI_DEVICE_ID_AL_M5229)
419 hwif->irq = hwif->channel ? 15 : 14;
423 * read IDE interface control
425 pci_read_config_byte(isa_dev, 0x58, &ideic);
428 ideic = ideic & 0x03;
430 /* get IRQ for IDE Controller */
431 if ((hwif->channel && ideic == 0x03) ||
432 (!hwif->channel && !ideic)) {
434 * get SIRQ1 routing table
436 pci_read_config_byte(isa_dev, 0x44, &inmir);
437 inmir = inmir & 0x0f;
438 irq = irq_routing_table[inmir];
439 } else if (hwif->channel && !(ideic & 0x01)) {
441 * get SIRQ2 routing table
443 pci_read_config_byte(isa_dev, 0x75, &inmir);
444 inmir = inmir & 0x0f;
445 irq = irq_routing_table[inmir];
452 #define init_hwif_ali15x3 NULL
453 #endif /* !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) */
456 * init_dma_ali15x3 - set up DMA on ALi15x3
457 * @hwif: IDE interface
460 * Set up the DMA functionality on the ALi 15x3.
463 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
464 const struct ide_port_info *d)
466 struct pci_dev *dev = to_pci_dev(hwif->dev);
467 unsigned long base = ide_pci_dma_base(hwif, d);
469 if (base == 0 || ide_pci_set_master(dev, d->name) < 0)
473 outb(inb(base + 2) & 0x60, base + 2);
475 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
476 hwif->name, base, base + 7);
478 if (ide_allocate_dma_engine(hwif))
481 ide_setup_dma(hwif, base);
486 static const struct ide_port_ops ali_port_ops = {
487 .set_pio_mode = ali_set_pio_mode,
488 .set_dma_mode = ali_set_dma_mode,
489 .udma_filter = ali_udma_filter,
490 .cable_detect = ali_cable_detect,
493 static const struct ide_dma_ops ali_dma_ops = {
494 .dma_host_set = ide_dma_host_set,
495 .dma_setup = ali15x3_dma_setup,
496 .dma_exec_cmd = ide_dma_exec_cmd,
497 .dma_start = ide_dma_start,
498 .dma_end = __ide_dma_end,
499 .dma_test_irq = ide_dma_test_irq,
500 .dma_lost_irq = ide_dma_lost_irq,
501 .dma_timeout = ide_dma_timeout,
504 static const struct ide_port_info ali15x3_chipset __devinitdata = {
506 .init_chipset = init_chipset_ali15x3,
507 .init_hwif = init_hwif_ali15x3,
508 .init_dma = init_dma_ali15x3,
509 .port_ops = &ali_port_ops,
510 .pio_mask = ATA_PIO5,
511 .swdma_mask = ATA_SWDMA2,
512 .mwdma_mask = ATA_MWDMA2,
516 * alim15x3_init_one - set up an ALi15x3 IDE controller
517 * @dev: PCI device to set up
519 * Perform the actual set up for an ALi15x3 that has been found by the
523 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
525 struct ide_port_info d = ali15x3_chipset;
526 u8 rev = dev->revision, idx = id->driver_data;
528 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
530 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
534 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
537 d.udma_mask = ATA_UDMA2;
538 else if (rev == 0xC2 || rev == 0xC3)
539 d.udma_mask = ATA_UDMA4;
540 else if (rev == 0xC4)
541 d.udma_mask = ATA_UDMA5;
543 d.udma_mask = ATA_UDMA6;
545 d.dma_ops = &ali_dma_ops;
547 d.host_flags |= IDE_HFLAG_NO_DMA;
549 d.mwdma_mask = d.swdma_mask = 0;
553 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
555 return ide_setup_pci_device(dev, &d);
559 static const struct pci_device_id alim15x3_pci_tbl[] = {
560 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
561 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
564 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
566 static struct pci_driver driver = {
567 .name = "ALI15x3_IDE",
568 .id_table = alim15x3_pci_tbl,
569 .probe = alim15x3_init_one,
572 static int __init ali15x3_ide_init(void)
574 return ide_pci_register_driver(&driver);
577 module_init(ali15x3_ide_init);
579 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
580 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
581 MODULE_LICENSE("GPL");