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>
41 #define DRV_NAME "alim15x3"
44 * Allow UDMA on M1543C-E chipset for WDC disks that ignore CRC checking
45 * (this is DANGEROUS and could result in data corruption).
49 module_param(wdc_udma, bool, 0);
50 MODULE_PARM_DESC(wdc_udma,
51 "allow UDMA on M1543C-E chipset for WDC disks (DANGEROUS)");
54 * ALi devices are not plug in. Otherwise these static values would
55 * need to go. They ought to go away anyway
58 static u8 m5229_revision;
59 static u8 chip_is_1543c_e;
60 static struct pci_dev *isa_dev;
63 * ali_set_pio_mode - set host controller for PIO mode
65 * @pio: PIO mode number
67 * Program the controller for the given PIO mode.
70 static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
72 ide_hwif_t *hwif = HWIF(drive);
73 struct pci_dev *dev = to_pci_dev(hwif->dev);
74 struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
75 int s_time = t->setup, a_time = t->active, c_time = t->cycle;
76 u8 s_clc, a_clc, r_clc;
78 int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
79 int port = hwif->channel ? 0x5c : 0x58;
80 int portFIFO = hwif->channel ? 0x55 : 0x54;
82 int unit = drive->select.b.unit & 1;
84 if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
86 if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8)
89 if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) {
95 local_irq_save(flags);
98 * PIO mode => ATA FIFO on, ATAPI FIFO off
100 pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
101 if (drive->media==ide_disk) {
103 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
105 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
109 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
111 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
115 pci_write_config_byte(dev, port, s_clc);
116 pci_write_config_byte(dev, port+drive->select.b.unit+2, (a_clc << 4) | r_clc);
117 local_irq_restore(flags);
121 * ali_udma_filter - compute UDMA mask
124 * Return available UDMA modes.
126 * The actual rules for the ALi are:
127 * No UDMA on revisions <= 0x20
128 * Disk only for revisions < 0xC2
129 * Not WDC drives on M1543C-E (?)
132 static u8 ali_udma_filter(ide_drive_t *drive)
134 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
135 if (drive->media != ide_disk)
137 if (chip_is_1543c_e && strstr(drive->id->model, "WDC ") &&
142 return drive->hwif->ultra_mask;
146 * ali_set_dma_mode - set host controller for DMA mode
150 * Configure the hardware for the desired IDE transfer mode.
153 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
155 ide_hwif_t *hwif = HWIF(drive);
156 struct pci_dev *dev = to_pci_dev(hwif->dev);
158 u8 unit = (drive->select.b.unit & 0x01);
160 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
162 if (speed == XFER_UDMA_6)
165 if (speed < XFER_UDMA_0) {
166 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
168 * clear "ultra enable" bit
170 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
171 tmpbyte &= ultra_enable;
172 pci_write_config_byte(dev, m5229_udma, tmpbyte);
175 * FIXME: Oh, my... DMA timings are never set.
178 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
179 tmpbyte &= (0x0f << ((1-unit) << 2));
181 * enable ultra dma and set timing
183 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
184 pci_write_config_byte(dev, m5229_udma, tmpbyte);
185 if (speed >= XFER_UDMA_3) {
186 pci_read_config_byte(dev, 0x4b, &tmpbyte);
188 pci_write_config_byte(dev, 0x4b, tmpbyte);
194 * ali15x3_dma_setup - begin a DMA phase
195 * @drive: target device
197 * Returns 1 if the DMA cannot be performed, zero on success.
200 static int ali15x3_dma_setup(ide_drive_t *drive)
202 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
203 if (rq_data_dir(drive->hwif->hwgroup->rq))
204 return 1; /* try PIO instead of DMA */
206 return ide_dma_setup(drive);
210 * init_chipset_ali15x3 - Initialise an ALi IDE controller
213 * This function initializes the ALI IDE controller and where
214 * appropriate also sets up the 1533 southbridge.
217 static unsigned int __devinit init_chipset_ali15x3(struct pci_dev *dev)
221 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
223 m5229_revision = dev->revision;
225 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
227 local_irq_save(flags);
229 if (m5229_revision < 0xC2) {
231 * revision 0x20 (1543-E, 1543-F)
232 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
233 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
235 pci_read_config_byte(dev, 0x4b, &tmpbyte);
239 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
241 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
243 if (m5229_revision >= 0x20 && isa_dev) {
244 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
245 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
251 * 1543C-B?, 1535, 1535D, 1553
252 * Note 1: not all "motherboard" support this detection
253 * Note 2: if no udma 66 device, the detection may "error".
254 * but in this case, we will not set the device to
255 * ultra 66, the detection result is not important
259 * enable "Cable Detection", m5229, 0x4b, bit3
261 pci_read_config_byte(dev, 0x4b, &tmpbyte);
262 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
265 * We should only tune the 1533 enable if we are using an ALi
266 * North bridge. We might have no north found on some zany
267 * box without a device at 0:0.0. The ALi bridge will be at
268 * 0:0.0 so if we didn't find one we know what is cooking.
270 if (north && north->vendor != PCI_VENDOR_ID_AL)
273 if (m5229_revision < 0xC5 && isa_dev)
276 * set south-bridge's enable bit, m1533, 0x79
279 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
280 if (m5229_revision == 0xC2) {
282 * 1543C-B0 (m1533, 0x79, bit 2)
284 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
285 } else if (m5229_revision >= 0xC3) {
287 * 1553/1535 (m1533, 0x79, bit 1)
289 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
295 * CD_ROM DMA on (m5229, 0x53, bit0)
296 * Enable this bit even if we want to use PIO.
297 * PIO FIFO off (m5229, 0x53, bit1)
298 * The hardware will use 0x54h and 0x55h to control PIO FIFO.
299 * (Not on later devices it seems)
301 * 0x53 changes meaning on later revs - we must no touch
302 * bit 1 on them. Need to check if 0x20 is the right break.
304 if (m5229_revision >= 0x20) {
305 pci_read_config_byte(dev, 0x53, &tmpbyte);
307 if (m5229_revision <= 0x20)
308 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
309 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
314 pci_write_config_byte(dev, 0x53, tmpbyte);
317 pci_dev_put(isa_dev);
318 local_irq_restore(flags);
323 * Cable special cases
326 static const struct dmi_system_id cable_dmi_table[] = {
328 .ident = "HP Pavilion N5430",
330 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
331 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
335 .ident = "Toshiba Satellite S1800-814",
337 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
338 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
344 static int ali_cable_override(struct pci_dev *pdev)
347 if (pdev->subsystem_vendor == 0x10CF &&
348 pdev->subsystem_device == 0x10AF)
351 /* Mitac 8317 (Winbook-A) and relatives */
352 if (pdev->subsystem_vendor == 0x1071 &&
353 pdev->subsystem_device == 0x8317)
357 if (dmi_check_system(cable_dmi_table))
364 * ali_cable_detect - cable detection
365 * @hwif: IDE interface
367 * This checks if the controller and the cable are capable
368 * of UDMA66 transfers. It doesn't check the drives.
369 * But see note 2 below!
371 * FIXME: frobs bits that are not defined on newer ALi devicea
374 static u8 __devinit ali_cable_detect(ide_hwif_t *hwif)
376 struct pci_dev *dev = to_pci_dev(hwif->dev);
378 u8 cbl = ATA_CBL_PATA40, tmpbyte;
380 local_irq_save(flags);
382 if (m5229_revision >= 0xC2) {
384 * m5229 80-pin cable detection (from Host View)
386 * 0x4a bit0 is 0 => primary channel has 80-pin
387 * 0x4a bit1 is 0 => secondary channel has 80-pin
389 * Certain laptops use short but suitable cables
390 * and don't implement the detect logic.
392 if (ali_cable_override(dev))
393 cbl = ATA_CBL_PATA40_SHORT;
395 pci_read_config_byte(dev, 0x4a, &tmpbyte);
396 if ((tmpbyte & (1 << hwif->channel)) == 0)
397 cbl = ATA_CBL_PATA80;
401 local_irq_restore(flags);
406 #if !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC)
408 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
409 * @hwif: interface to configure
411 * Obtain the IRQ tables for an ALi based IDE solution on the PC
412 * class platforms. This part of the code isn't applicable to the
413 * Sparc and PowerPC systems.
416 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
418 struct pci_dev *dev = to_pci_dev(hwif->dev);
420 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
421 1, 11, 0, 12, 0, 14, 0, 15 };
424 if (dev->device == PCI_DEVICE_ID_AL_M5229)
425 hwif->irq = hwif->channel ? 15 : 14;
429 * read IDE interface control
431 pci_read_config_byte(isa_dev, 0x58, &ideic);
434 ideic = ideic & 0x03;
436 /* get IRQ for IDE Controller */
437 if ((hwif->channel && ideic == 0x03) ||
438 (!hwif->channel && !ideic)) {
440 * get SIRQ1 routing table
442 pci_read_config_byte(isa_dev, 0x44, &inmir);
443 inmir = inmir & 0x0f;
444 irq = irq_routing_table[inmir];
445 } else if (hwif->channel && !(ideic & 0x01)) {
447 * get SIRQ2 routing table
449 pci_read_config_byte(isa_dev, 0x75, &inmir);
450 inmir = inmir & 0x0f;
451 irq = irq_routing_table[inmir];
458 #define init_hwif_ali15x3 NULL
459 #endif /* !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) */
462 * init_dma_ali15x3 - set up DMA on ALi15x3
463 * @hwif: IDE interface
466 * Set up the DMA functionality on the ALi 15x3.
469 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
470 const struct ide_port_info *d)
472 struct pci_dev *dev = to_pci_dev(hwif->dev);
473 unsigned long base = ide_pci_dma_base(hwif, d);
478 hwif->dma_base = base;
480 if (ide_pci_check_simplex(hwif, d) < 0)
483 if (ide_pci_set_master(dev, d->name) < 0)
487 outb(inb(base + 2) & 0x60, base + 2);
489 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
490 hwif->name, base, base + 7);
492 if (ide_allocate_dma_engine(hwif))
495 hwif->dma_ops = &sff_dma_ops;
500 static const struct ide_port_ops ali_port_ops = {
501 .set_pio_mode = ali_set_pio_mode,
502 .set_dma_mode = ali_set_dma_mode,
503 .udma_filter = ali_udma_filter,
504 .cable_detect = ali_cable_detect,
507 static const struct ide_dma_ops ali_dma_ops = {
508 .dma_host_set = ide_dma_host_set,
509 .dma_setup = ali15x3_dma_setup,
510 .dma_exec_cmd = ide_dma_exec_cmd,
511 .dma_start = ide_dma_start,
512 .dma_end = __ide_dma_end,
513 .dma_test_irq = ide_dma_test_irq,
514 .dma_lost_irq = ide_dma_lost_irq,
515 .dma_timeout = ide_dma_timeout,
518 static const struct ide_port_info ali15x3_chipset __devinitdata = {
520 .init_chipset = init_chipset_ali15x3,
521 .init_hwif = init_hwif_ali15x3,
522 .init_dma = init_dma_ali15x3,
523 .port_ops = &ali_port_ops,
524 .pio_mask = ATA_PIO5,
525 .swdma_mask = ATA_SWDMA2,
526 .mwdma_mask = ATA_MWDMA2,
530 * alim15x3_init_one - set up an ALi15x3 IDE controller
531 * @dev: PCI device to set up
533 * Perform the actual set up for an ALi15x3 that has been found by the
537 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
539 struct ide_port_info d = ali15x3_chipset;
540 u8 rev = dev->revision, idx = id->driver_data;
542 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
544 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
548 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
551 d.udma_mask = ATA_UDMA2;
552 else if (rev == 0xC2 || rev == 0xC3)
553 d.udma_mask = ATA_UDMA4;
554 else if (rev == 0xC4)
555 d.udma_mask = ATA_UDMA5;
557 d.udma_mask = ATA_UDMA6;
559 d.dma_ops = &ali_dma_ops;
561 d.host_flags |= IDE_HFLAG_NO_DMA;
563 d.mwdma_mask = d.swdma_mask = 0;
567 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
569 return ide_pci_init_one(dev, &d, NULL);
573 static const struct pci_device_id alim15x3_pci_tbl[] = {
574 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
575 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
578 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
580 static struct pci_driver driver = {
581 .name = "ALI15x3_IDE",
582 .id_table = alim15x3_pci_tbl,
583 .probe = alim15x3_init_one,
584 .remove = ide_pci_remove,
587 static int __init ali15x3_ide_init(void)
589 return ide_pci_register_driver(&driver);
592 static void __exit ali15x3_ide_exit(void)
594 return pci_unregister_driver(&driver);
597 module_init(ali15x3_ide_init);
598 module_exit(ali15x3_ide_exit);
600 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
601 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
602 MODULE_LICENSE("GPL");