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
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) 2007-2010 Bartlomiej Zolnierkiewicz
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/ide.h>
35 #include <linux/init.h>
36 #include <linux/dmi.h>
40 #define DRV_NAME "alim15x3"
43 * ALi devices are not plug in. Otherwise these static values would
44 * need to go. They ought to go away anyway
47 static u8 m5229_revision;
48 static u8 chip_is_1543c_e;
49 static struct pci_dev *isa_dev;
52 * ali_set_pio_mode - set host controller for PIO mode
54 * @pio: PIO mode number
56 * Program the controller for the given PIO mode.
59 static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
61 ide_hwif_t *hwif = drive->hwif;
62 struct pci_dev *dev = to_pci_dev(hwif->dev);
64 int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
65 unsigned long T = 1000000 / bus_speed; /* PCI clock based */
66 int port = hwif->channel ? 0x5c : 0x58;
67 int portFIFO = hwif->channel ? 0x55 : 0x54;
68 u8 cd_dma_fifo = 0, unit = drive->dn & 1;
71 ide_timing_compute(drive, XFER_PIO_0 + pio, &t, T, 1);
73 t.setup = clamp_val(t.setup, 1, 8) & 7;
74 t.active = clamp_val(t.active, 1, 8) & 7;
75 t.recover = clamp_val(t.recover, 1, 16) & 15;
77 local_irq_save(flags);
80 * PIO mode => ATA FIFO on, ATAPI FIFO off
82 pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
83 if (drive->media==ide_disk) {
85 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
87 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
91 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
93 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
97 pci_write_config_byte(dev, port, t.setup);
98 pci_write_config_byte(dev, port + unit + 2,
99 (t.active << 4) | t.recover);
101 local_irq_restore(flags);
105 * ali_udma_filter - compute UDMA mask
108 * Return available UDMA modes.
110 * The actual rules for the ALi are:
111 * No UDMA on revisions <= 0x20
112 * Disk only for revisions < 0xC2
113 * Not WDC drives on M1543C-E (?)
116 static u8 ali_udma_filter(ide_drive_t *drive)
118 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
119 if (drive->media != ide_disk)
121 if (chip_is_1543c_e &&
122 strstr((char *)&drive->id[ATA_ID_PROD], "WDC "))
126 return drive->hwif->ultra_mask;
130 * ali_set_dma_mode - set host controller for DMA mode
134 * Configure the hardware for the desired IDE transfer mode.
137 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
139 ide_hwif_t *hwif = drive->hwif;
140 struct pci_dev *dev = to_pci_dev(hwif->dev);
142 u8 unit = drive->dn & 1;
144 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
146 if (speed == XFER_UDMA_6)
149 if (speed < XFER_UDMA_0) {
150 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
152 * clear "ultra enable" bit
154 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
155 tmpbyte &= ultra_enable;
156 pci_write_config_byte(dev, m5229_udma, tmpbyte);
159 * FIXME: Oh, my... DMA timings are never set.
162 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
163 tmpbyte &= (0x0f << ((1-unit) << 2));
165 * enable ultra dma and set timing
167 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
168 pci_write_config_byte(dev, m5229_udma, tmpbyte);
169 if (speed >= XFER_UDMA_3) {
170 pci_read_config_byte(dev, 0x4b, &tmpbyte);
172 pci_write_config_byte(dev, 0x4b, tmpbyte);
178 * ali_dma_check - DMA check
179 * @drive: target device
182 * Returns 1 if the DMA cannot be performed, zero on success.
185 static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd)
187 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
188 if (cmd->tf_flags & IDE_TFLAG_WRITE)
189 return 1; /* try PIO instead of DMA */
195 * init_chipset_ali15x3 - Initialise an ALi IDE controller
198 * This function initializes the ALI IDE controller and where
199 * appropriate also sets up the 1533 southbridge.
202 static int init_chipset_ali15x3(struct pci_dev *dev)
206 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
208 m5229_revision = dev->revision;
210 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
212 local_irq_save(flags);
214 if (m5229_revision < 0xC2) {
216 * revision 0x20 (1543-E, 1543-F)
217 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
218 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
220 pci_read_config_byte(dev, 0x4b, &tmpbyte);
224 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
226 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
228 if (m5229_revision >= 0x20 && isa_dev) {
229 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
230 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
236 * 1543C-B?, 1535, 1535D, 1553
237 * Note 1: not all "motherboard" support this detection
238 * Note 2: if no udma 66 device, the detection may "error".
239 * but in this case, we will not set the device to
240 * ultra 66, the detection result is not important
244 * enable "Cable Detection", m5229, 0x4b, bit3
246 pci_read_config_byte(dev, 0x4b, &tmpbyte);
247 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
250 * We should only tune the 1533 enable if we are using an ALi
251 * North bridge. We might have no north found on some zany
252 * box without a device at 0:0.0. The ALi bridge will be at
253 * 0:0.0 so if we didn't find one we know what is cooking.
255 if (north && north->vendor != PCI_VENDOR_ID_AL)
258 if (m5229_revision < 0xC5 && isa_dev)
261 * set south-bridge's enable bit, m1533, 0x79
264 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
265 if (m5229_revision == 0xC2) {
267 * 1543C-B0 (m1533, 0x79, bit 2)
269 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
270 } else if (m5229_revision >= 0xC3) {
272 * 1553/1535 (m1533, 0x79, bit 1)
274 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
280 * CD_ROM DMA on (m5229, 0x53, bit0)
281 * Enable this bit even if we want to use PIO.
282 * PIO FIFO off (m5229, 0x53, bit1)
283 * The hardware will use 0x54h and 0x55h to control PIO FIFO.
284 * (Not on later devices it seems)
286 * 0x53 changes meaning on later revs - we must no touch
287 * bit 1 on them. Need to check if 0x20 is the right break.
289 if (m5229_revision >= 0x20) {
290 pci_read_config_byte(dev, 0x53, &tmpbyte);
292 if (m5229_revision <= 0x20)
293 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
294 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
299 pci_write_config_byte(dev, 0x53, tmpbyte);
302 pci_dev_put(isa_dev);
303 local_irq_restore(flags);
308 * Cable special cases
311 static const struct dmi_system_id cable_dmi_table[] = {
313 .ident = "HP Pavilion N5430",
315 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
316 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
320 .ident = "Toshiba Satellite S1800-814",
322 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
323 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
329 static int ali_cable_override(struct pci_dev *pdev)
332 if (pdev->subsystem_vendor == 0x10CF &&
333 pdev->subsystem_device == 0x10AF)
336 /* Mitac 8317 (Winbook-A) and relatives */
337 if (pdev->subsystem_vendor == 0x1071 &&
338 pdev->subsystem_device == 0x8317)
342 if (dmi_check_system(cable_dmi_table))
349 * ali_cable_detect - cable detection
350 * @hwif: IDE interface
352 * This checks if the controller and the cable are capable
353 * of UDMA66 transfers. It doesn't check the drives.
354 * But see note 2 below!
356 * FIXME: frobs bits that are not defined on newer ALi devicea
359 static u8 ali_cable_detect(ide_hwif_t *hwif)
361 struct pci_dev *dev = to_pci_dev(hwif->dev);
363 u8 cbl = ATA_CBL_PATA40, tmpbyte;
365 local_irq_save(flags);
367 if (m5229_revision >= 0xC2) {
369 * m5229 80-pin cable detection (from Host View)
371 * 0x4a bit0 is 0 => primary channel has 80-pin
372 * 0x4a bit1 is 0 => secondary channel has 80-pin
374 * Certain laptops use short but suitable cables
375 * and don't implement the detect logic.
377 if (ali_cable_override(dev))
378 cbl = ATA_CBL_PATA40_SHORT;
380 pci_read_config_byte(dev, 0x4a, &tmpbyte);
381 if ((tmpbyte & (1 << hwif->channel)) == 0)
382 cbl = ATA_CBL_PATA80;
386 local_irq_restore(flags);
391 #ifndef CONFIG_SPARC64
393 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
394 * @hwif: interface to configure
396 * Obtain the IRQ tables for an ALi based IDE solution on the PC
397 * class platforms. This part of the code isn't applicable to the
401 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
404 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
405 1, 11, 0, 12, 0, 14, 0, 15 };
410 * read IDE interface control
412 pci_read_config_byte(isa_dev, 0x58, &ideic);
415 ideic = ideic & 0x03;
417 /* get IRQ for IDE Controller */
418 if ((hwif->channel && ideic == 0x03) ||
419 (!hwif->channel && !ideic)) {
421 * get SIRQ1 routing table
423 pci_read_config_byte(isa_dev, 0x44, &inmir);
424 inmir = inmir & 0x0f;
425 irq = irq_routing_table[inmir];
426 } else if (hwif->channel && !(ideic & 0x01)) {
428 * get SIRQ2 routing table
430 pci_read_config_byte(isa_dev, 0x75, &inmir);
431 inmir = inmir & 0x0f;
432 irq = irq_routing_table[inmir];
439 #define init_hwif_ali15x3 NULL
440 #endif /* CONFIG_SPARC64 */
443 * init_dma_ali15x3 - set up DMA on ALi15x3
444 * @hwif: IDE interface
447 * Set up the DMA functionality on the ALi 15x3.
450 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
451 const struct ide_port_info *d)
453 struct pci_dev *dev = to_pci_dev(hwif->dev);
454 unsigned long base = ide_pci_dma_base(hwif, d);
459 hwif->dma_base = base;
461 if (ide_pci_check_simplex(hwif, d) < 0)
464 if (ide_pci_set_master(dev, d->name) < 0)
468 outb(inb(base + 2) & 0x60, base + 2);
470 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
471 hwif->name, base, base + 7);
473 if (ide_allocate_dma_engine(hwif))
479 static const struct ide_port_ops ali_port_ops = {
480 .set_pio_mode = ali_set_pio_mode,
481 .set_dma_mode = ali_set_dma_mode,
482 .udma_filter = ali_udma_filter,
483 .cable_detect = ali_cable_detect,
486 static const struct ide_dma_ops ali_dma_ops = {
487 .dma_host_set = ide_dma_host_set,
488 .dma_setup = ide_dma_setup,
489 .dma_start = ide_dma_start,
490 .dma_end = ide_dma_end,
491 .dma_test_irq = ide_dma_test_irq,
492 .dma_lost_irq = ide_dma_lost_irq,
493 .dma_check = ali_dma_check,
494 .dma_timer_expiry = ide_dma_sff_timer_expiry,
495 .dma_sff_read_status = ide_dma_sff_read_status,
498 static const struct ide_port_info ali15x3_chipset __devinitdata = {
500 .init_chipset = init_chipset_ali15x3,
501 .init_hwif = init_hwif_ali15x3,
502 .init_dma = init_dma_ali15x3,
503 .port_ops = &ali_port_ops,
504 .dma_ops = &sff_dma_ops,
505 .pio_mask = ATA_PIO5,
506 .swdma_mask = ATA_SWDMA2,
507 .mwdma_mask = ATA_MWDMA2,
511 * alim15x3_init_one - set up an ALi15x3 IDE controller
512 * @dev: PCI device to set up
514 * Perform the actual set up for an ALi15x3 that has been found by the
518 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
520 struct ide_port_info d = ali15x3_chipset;
521 u8 rev = dev->revision, idx = id->driver_data;
523 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
525 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
529 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
532 d.udma_mask = ATA_UDMA2;
533 else if (rev == 0xC2 || rev == 0xC3)
534 d.udma_mask = ATA_UDMA4;
535 else if (rev == 0xC4)
536 d.udma_mask = ATA_UDMA5;
538 d.udma_mask = ATA_UDMA6;
540 d.dma_ops = &ali_dma_ops;
542 d.host_flags |= IDE_HFLAG_NO_DMA;
544 d.mwdma_mask = d.swdma_mask = 0;
548 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
550 return ide_pci_init_one(dev, &d, NULL);
554 static const struct pci_device_id alim15x3_pci_tbl[] = {
555 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
556 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
559 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
561 static struct pci_driver alim15x3_pci_driver = {
562 .name = "ALI15x3_IDE",
563 .id_table = alim15x3_pci_tbl,
564 .probe = alim15x3_init_one,
565 .remove = ide_pci_remove,
566 .suspend = ide_pci_suspend,
567 .resume = ide_pci_resume,
570 static int __init ali15x3_ide_init(void)
572 return ide_pci_register_driver(&alim15x3_pci_driver);
575 static void __exit ali15x3_ide_exit(void)
577 pci_unregister_driver(&alim15x3_pci_driver);
580 module_init(ali15x3_ide_init);
581 module_exit(ali15x3_ide_exit);
583 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox, Bartlomiej Zolnierkiewicz");
584 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
585 MODULE_LICENSE("GPL");