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;
51 static void ali_fifo_control(ide_hwif_t *hwif, ide_drive_t *drive, int on)
53 struct pci_dev *pdev = to_pci_dev(hwif->dev);
54 int pio_fifo = 0x54 + hwif->channel;
56 int shift = 4 * (drive->dn & 1);
58 pci_read_config_byte(pdev, pio_fifo, &fifo);
59 fifo &= ~(0x0F << shift);
60 fifo |= (on << shift);
61 pci_write_config_byte(pdev, pio_fifo, fifo);
65 * ali_set_pio_mode - set host controller for PIO mode
67 * @pio: PIO mode number
69 * Program the controller for the given PIO mode.
72 static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
74 ide_hwif_t *hwif = drive->hwif;
75 struct pci_dev *dev = to_pci_dev(hwif->dev);
77 int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
78 unsigned long T = 1000000 / bus_speed; /* PCI clock based */
79 int port = hwif->channel ? 0x5c : 0x58;
80 u8 unit = drive->dn & 1;
83 ide_timing_compute(drive, XFER_PIO_0 + pio, &t, T, 1);
85 t.setup = clamp_val(t.setup, 1, 8) & 7;
86 t.active = clamp_val(t.active, 1, 8) & 7;
87 t.recover = clamp_val(t.recover, 1, 16) & 15;
89 local_irq_save(flags);
92 * PIO mode => ATA FIFO on, ATAPI FIFO off
94 ali_fifo_control(hwif, drive, (drive->media == ide_disk) ? 0x05 : 0x00);
96 pci_write_config_byte(dev, port, t.setup);
97 pci_write_config_byte(dev, port + unit + 2,
98 (t.active << 4) | t.recover);
100 local_irq_restore(flags);
104 * ali_udma_filter - compute UDMA mask
107 * Return available UDMA modes.
109 * The actual rules for the ALi are:
110 * No UDMA on revisions <= 0x20
111 * Disk only for revisions < 0xC2
112 * Not WDC drives on M1543C-E (?)
115 static u8 ali_udma_filter(ide_drive_t *drive)
117 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
118 if (drive->media != ide_disk)
120 if (chip_is_1543c_e &&
121 strstr((char *)&drive->id[ATA_ID_PROD], "WDC "))
125 return drive->hwif->ultra_mask;
129 * ali_set_dma_mode - set host controller for DMA mode
133 * Configure the hardware for the desired IDE transfer mode.
136 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
138 ide_hwif_t *hwif = drive->hwif;
139 struct pci_dev *dev = to_pci_dev(hwif->dev);
141 u8 unit = drive->dn & 1;
143 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
145 if (speed == XFER_UDMA_6)
148 if (speed < XFER_UDMA_0) {
149 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
151 * clear "ultra enable" bit
153 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
154 tmpbyte &= ultra_enable;
155 pci_write_config_byte(dev, m5229_udma, tmpbyte);
158 * FIXME: Oh, my... DMA timings are never set.
161 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
162 tmpbyte &= (0x0f << ((1-unit) << 2));
164 * enable ultra dma and set timing
166 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
167 pci_write_config_byte(dev, m5229_udma, tmpbyte);
168 if (speed >= XFER_UDMA_3) {
169 pci_read_config_byte(dev, 0x4b, &tmpbyte);
171 pci_write_config_byte(dev, 0x4b, tmpbyte);
177 * ali_dma_check - DMA check
178 * @drive: target device
181 * Returns 1 if the DMA cannot be performed, zero on success.
184 static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd)
186 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
187 if (cmd->tf_flags & IDE_TFLAG_WRITE)
188 return 1; /* try PIO instead of DMA */
194 * init_chipset_ali15x3 - Initialise an ALi IDE controller
197 * This function initializes the ALI IDE controller and where
198 * appropriate also sets up the 1533 southbridge.
201 static int init_chipset_ali15x3(struct pci_dev *dev)
205 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
207 m5229_revision = dev->revision;
209 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
211 local_irq_save(flags);
213 if (m5229_revision < 0xC2) {
215 * revision 0x20 (1543-E, 1543-F)
216 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
217 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
219 pci_read_config_byte(dev, 0x4b, &tmpbyte);
223 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
225 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
227 if (m5229_revision >= 0x20 && isa_dev) {
228 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
229 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
235 * 1543C-B?, 1535, 1535D, 1553
236 * Note 1: not all "motherboard" support this detection
237 * Note 2: if no udma 66 device, the detection may "error".
238 * but in this case, we will not set the device to
239 * ultra 66, the detection result is not important
243 * enable "Cable Detection", m5229, 0x4b, bit3
245 pci_read_config_byte(dev, 0x4b, &tmpbyte);
246 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
249 * We should only tune the 1533 enable if we are using an ALi
250 * North bridge. We might have no north found on some zany
251 * box without a device at 0:0.0. The ALi bridge will be at
252 * 0:0.0 so if we didn't find one we know what is cooking.
254 if (north && north->vendor != PCI_VENDOR_ID_AL)
257 if (m5229_revision < 0xC5 && isa_dev)
260 * set south-bridge's enable bit, m1533, 0x79
263 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
264 if (m5229_revision == 0xC2) {
266 * 1543C-B0 (m1533, 0x79, bit 2)
268 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
269 } else if (m5229_revision >= 0xC3) {
271 * 1553/1535 (m1533, 0x79, bit 1)
273 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
279 * CD_ROM DMA on (m5229, 0x53, bit0)
280 * Enable this bit even if we want to use PIO.
281 * PIO FIFO off (m5229, 0x53, bit1)
282 * The hardware will use 0x54h and 0x55h to control PIO FIFO.
283 * (Not on later devices it seems)
285 * 0x53 changes meaning on later revs - we must no touch
286 * bit 1 on them. Need to check if 0x20 is the right break.
288 if (m5229_revision >= 0x20) {
289 pci_read_config_byte(dev, 0x53, &tmpbyte);
291 if (m5229_revision <= 0x20)
292 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
293 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
298 pci_write_config_byte(dev, 0x53, tmpbyte);
301 pci_dev_put(isa_dev);
302 local_irq_restore(flags);
307 * Cable special cases
310 static const struct dmi_system_id cable_dmi_table[] = {
312 .ident = "HP Pavilion N5430",
314 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
315 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
319 .ident = "Toshiba Satellite S1800-814",
321 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
322 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
328 static int ali_cable_override(struct pci_dev *pdev)
331 if (pdev->subsystem_vendor == 0x10CF &&
332 pdev->subsystem_device == 0x10AF)
335 /* Mitac 8317 (Winbook-A) and relatives */
336 if (pdev->subsystem_vendor == 0x1071 &&
337 pdev->subsystem_device == 0x8317)
341 if (dmi_check_system(cable_dmi_table))
348 * ali_cable_detect - cable detection
349 * @hwif: IDE interface
351 * This checks if the controller and the cable are capable
352 * of UDMA66 transfers. It doesn't check the drives.
353 * But see note 2 below!
355 * FIXME: frobs bits that are not defined on newer ALi devicea
358 static u8 ali_cable_detect(ide_hwif_t *hwif)
360 struct pci_dev *dev = to_pci_dev(hwif->dev);
362 u8 cbl = ATA_CBL_PATA40, tmpbyte;
364 local_irq_save(flags);
366 if (m5229_revision >= 0xC2) {
368 * m5229 80-pin cable detection (from Host View)
370 * 0x4a bit0 is 0 => primary channel has 80-pin
371 * 0x4a bit1 is 0 => secondary channel has 80-pin
373 * Certain laptops use short but suitable cables
374 * and don't implement the detect logic.
376 if (ali_cable_override(dev))
377 cbl = ATA_CBL_PATA40_SHORT;
379 pci_read_config_byte(dev, 0x4a, &tmpbyte);
380 if ((tmpbyte & (1 << hwif->channel)) == 0)
381 cbl = ATA_CBL_PATA80;
385 local_irq_restore(flags);
390 #ifndef CONFIG_SPARC64
392 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
393 * @hwif: interface to configure
395 * Obtain the IRQ tables for an ALi based IDE solution on the PC
396 * class platforms. This part of the code isn't applicable to the
400 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
403 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
404 1, 11, 0, 12, 0, 14, 0, 15 };
409 * read IDE interface control
411 pci_read_config_byte(isa_dev, 0x58, &ideic);
414 ideic = ideic & 0x03;
416 /* get IRQ for IDE Controller */
417 if ((hwif->channel && ideic == 0x03) ||
418 (!hwif->channel && !ideic)) {
420 * get SIRQ1 routing table
422 pci_read_config_byte(isa_dev, 0x44, &inmir);
423 inmir = inmir & 0x0f;
424 irq = irq_routing_table[inmir];
425 } else if (hwif->channel && !(ideic & 0x01)) {
427 * get SIRQ2 routing table
429 pci_read_config_byte(isa_dev, 0x75, &inmir);
430 inmir = inmir & 0x0f;
431 irq = irq_routing_table[inmir];
438 #define init_hwif_ali15x3 NULL
439 #endif /* CONFIG_SPARC64 */
442 * init_dma_ali15x3 - set up DMA on ALi15x3
443 * @hwif: IDE interface
446 * Set up the DMA functionality on the ALi 15x3.
449 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
450 const struct ide_port_info *d)
452 struct pci_dev *dev = to_pci_dev(hwif->dev);
453 unsigned long base = ide_pci_dma_base(hwif, d);
458 hwif->dma_base = base;
460 if (ide_pci_check_simplex(hwif, d) < 0)
463 if (ide_pci_set_master(dev, d->name) < 0)
467 outb(inb(base + 2) & 0x60, base + 2);
469 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
470 hwif->name, base, base + 7);
472 if (ide_allocate_dma_engine(hwif))
478 static const struct ide_port_ops ali_port_ops = {
479 .set_pio_mode = ali_set_pio_mode,
480 .set_dma_mode = ali_set_dma_mode,
481 .udma_filter = ali_udma_filter,
482 .cable_detect = ali_cable_detect,
485 static const struct ide_dma_ops ali_dma_ops = {
486 .dma_host_set = ide_dma_host_set,
487 .dma_setup = ide_dma_setup,
488 .dma_start = ide_dma_start,
489 .dma_end = ide_dma_end,
490 .dma_test_irq = ide_dma_test_irq,
491 .dma_lost_irq = ide_dma_lost_irq,
492 .dma_check = ali_dma_check,
493 .dma_timer_expiry = ide_dma_sff_timer_expiry,
494 .dma_sff_read_status = ide_dma_sff_read_status,
497 static const struct ide_port_info ali15x3_chipset __devinitdata = {
499 .init_chipset = init_chipset_ali15x3,
500 .init_hwif = init_hwif_ali15x3,
501 .init_dma = init_dma_ali15x3,
502 .port_ops = &ali_port_ops,
503 .dma_ops = &sff_dma_ops,
504 .pio_mask = ATA_PIO5,
505 .swdma_mask = ATA_SWDMA2,
506 .mwdma_mask = ATA_MWDMA2,
510 * alim15x3_init_one - set up an ALi15x3 IDE controller
511 * @dev: PCI device to set up
513 * Perform the actual set up for an ALi15x3 that has been found by the
517 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
519 struct ide_port_info d = ali15x3_chipset;
520 u8 rev = dev->revision, idx = id->driver_data;
522 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
524 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
528 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
531 d.udma_mask = ATA_UDMA2;
532 else if (rev == 0xC2 || rev == 0xC3)
533 d.udma_mask = ATA_UDMA4;
534 else if (rev == 0xC4)
535 d.udma_mask = ATA_UDMA5;
537 d.udma_mask = ATA_UDMA6;
539 d.dma_ops = &ali_dma_ops;
541 d.host_flags |= IDE_HFLAG_NO_DMA;
543 d.mwdma_mask = d.swdma_mask = 0;
547 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
549 return ide_pci_init_one(dev, &d, NULL);
553 static const struct pci_device_id alim15x3_pci_tbl[] = {
554 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
555 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
558 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
560 static struct pci_driver alim15x3_pci_driver = {
561 .name = "ALI15x3_IDE",
562 .id_table = alim15x3_pci_tbl,
563 .probe = alim15x3_init_one,
564 .remove = ide_pci_remove,
565 .suspend = ide_pci_suspend,
566 .resume = ide_pci_resume,
569 static int __init ali15x3_ide_init(void)
571 return ide_pci_register_driver(&alim15x3_pci_driver);
574 static void __exit ali15x3_ide_exit(void)
576 pci_unregister_driver(&alim15x3_pci_driver);
579 module_init(ali15x3_ide_init);
580 module_exit(ali15x3_ide_exit);
582 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox, Bartlomiej Zolnierkiewicz");
583 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
584 MODULE_LICENSE("GPL");