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 * Allow UDMA on M1543C-E chipset for WDC disks that ignore CRC checking
43 * (this is DANGEROUS and could result in data corruption).
47 module_param(wdc_udma, bool, 0);
48 MODULE_PARM_DESC(wdc_udma,
49 "allow UDMA on M1543C-E chipset for WDC disks (DANGEROUS)");
52 * ALi devices are not plug in. Otherwise these static values would
53 * need to go. They ought to go away anyway
56 static u8 m5229_revision;
57 static u8 chip_is_1543c_e;
58 static struct pci_dev *isa_dev;
61 * ali_set_pio_mode - set host controller for PIO mode
63 * @pio: PIO mode number
65 * Program the controller for the given PIO mode.
68 static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
70 ide_hwif_t *hwif = HWIF(drive);
71 struct pci_dev *dev = to_pci_dev(hwif->dev);
72 int s_time, a_time, c_time;
73 u8 s_clc, a_clc, r_clc;
75 int bus_speed = ide_pci_clk ? ide_pci_clk : system_bus_clock();
76 int port = hwif->channel ? 0x5c : 0x58;
77 int portFIFO = hwif->channel ? 0x55 : 0x54;
79 int unit = drive->select.b.unit & 1;
81 s_time = ide_pio_timings[pio].setup_time;
82 a_time = ide_pio_timings[pio].active_time;
83 if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
85 if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8)
87 c_time = ide_pio_timings[pio].cycle_time;
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 (?)
131 * FIXME: WDC ifdef needs to die
134 static u8 ali_udma_filter(ide_drive_t *drive)
136 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
137 if (drive->media != ide_disk)
139 #ifndef CONFIG_WDC_ALI15X3
140 if (chip_is_1543c_e && strstr(drive->id->model, "WDC ") &&
146 return drive->hwif->ultra_mask;
150 * ali_set_dma_mode - set host controller for DMA mode
154 * Configure the hardware for the desired IDE transfer mode.
157 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
159 ide_hwif_t *hwif = HWIF(drive);
160 struct pci_dev *dev = to_pci_dev(hwif->dev);
162 u8 unit = (drive->select.b.unit & 0x01);
164 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
166 if (speed == XFER_UDMA_6)
169 if (speed < XFER_UDMA_0) {
170 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
172 * clear "ultra enable" bit
174 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
175 tmpbyte &= ultra_enable;
176 pci_write_config_byte(dev, m5229_udma, tmpbyte);
179 * FIXME: Oh, my... DMA timings are never set.
182 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
183 tmpbyte &= (0x0f << ((1-unit) << 2));
185 * enable ultra dma and set timing
187 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
188 pci_write_config_byte(dev, m5229_udma, tmpbyte);
189 if (speed >= XFER_UDMA_3) {
190 pci_read_config_byte(dev, 0x4b, &tmpbyte);
192 pci_write_config_byte(dev, 0x4b, tmpbyte);
198 * ali15x3_dma_setup - begin a DMA phase
199 * @drive: target device
201 * Returns 1 if the DMA cannot be performed, zero on success.
204 static int ali15x3_dma_setup(ide_drive_t *drive)
206 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
207 if (rq_data_dir(drive->hwif->hwgroup->rq))
208 return 1; /* try PIO instead of DMA */
210 return ide_dma_setup(drive);
214 * init_chipset_ali15x3 - Initialise an ALi IDE controller
216 * @name: Name of the controller
218 * This function initializes the ALI IDE controller and where
219 * appropriate also sets up the 1533 southbridge.
222 static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const char *name)
226 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
228 m5229_revision = dev->revision;
230 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
232 local_irq_save(flags);
234 if (m5229_revision < 0xC2) {
236 * revision 0x20 (1543-E, 1543-F)
237 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
238 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
240 pci_read_config_byte(dev, 0x4b, &tmpbyte);
244 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
246 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
248 if (m5229_revision >= 0x20 && isa_dev) {
249 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
250 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
256 * 1543C-B?, 1535, 1535D, 1553
257 * Note 1: not all "motherboard" support this detection
258 * Note 2: if no udma 66 device, the detection may "error".
259 * but in this case, we will not set the device to
260 * ultra 66, the detection result is not important
264 * enable "Cable Detection", m5229, 0x4b, bit3
266 pci_read_config_byte(dev, 0x4b, &tmpbyte);
267 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
270 * We should only tune the 1533 enable if we are using an ALi
271 * North bridge. We might have no north found on some zany
272 * box without a device at 0:0.0. The ALi bridge will be at
273 * 0:0.0 so if we didn't find one we know what is cooking.
275 if (north && north->vendor != PCI_VENDOR_ID_AL)
278 if (m5229_revision < 0xC5 && isa_dev)
281 * set south-bridge's enable bit, m1533, 0x79
284 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
285 if (m5229_revision == 0xC2) {
287 * 1543C-B0 (m1533, 0x79, bit 2)
289 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
290 } else if (m5229_revision >= 0xC3) {
292 * 1553/1535 (m1533, 0x79, bit 1)
294 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
300 * CD_ROM DMA on (m5229, 0x53, bit0)
301 * Enable this bit even if we want to use PIO.
302 * PIO FIFO off (m5229, 0x53, bit1)
303 * The hardware will use 0x54h and 0x55h to control PIO FIFO.
304 * (Not on later devices it seems)
306 * 0x53 changes meaning on later revs - we must no touch
307 * bit 1 on them. Need to check if 0x20 is the right break.
309 if (m5229_revision >= 0x20) {
310 pci_read_config_byte(dev, 0x53, &tmpbyte);
312 if (m5229_revision <= 0x20)
313 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
314 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
319 pci_write_config_byte(dev, 0x53, tmpbyte);
322 pci_dev_put(isa_dev);
323 local_irq_restore(flags);
328 * Cable special cases
331 static const struct dmi_system_id cable_dmi_table[] = {
333 .ident = "HP Pavilion N5430",
335 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
336 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
340 .ident = "Toshiba Satellite S1800-814",
342 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
343 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
349 static int ali_cable_override(struct pci_dev *pdev)
352 if (pdev->subsystem_vendor == 0x10CF &&
353 pdev->subsystem_device == 0x10AF)
356 /* Mitac 8317 (Winbook-A) and relatives */
357 if (pdev->subsystem_vendor == 0x1071 &&
358 pdev->subsystem_device == 0x8317)
362 if (dmi_check_system(cable_dmi_table))
369 * ali_cable_detect - cable detection
370 * @hwif: IDE interface
372 * This checks if the controller and the cable are capable
373 * of UDMA66 transfers. It doesn't check the drives.
374 * But see note 2 below!
376 * FIXME: frobs bits that are not defined on newer ALi devicea
379 static u8 __devinit ali_cable_detect(ide_hwif_t *hwif)
381 struct pci_dev *dev = to_pci_dev(hwif->dev);
383 u8 cbl = ATA_CBL_PATA40, tmpbyte;
385 local_irq_save(flags);
387 if (m5229_revision >= 0xC2) {
389 * m5229 80-pin cable detection (from Host View)
391 * 0x4a bit0 is 0 => primary channel has 80-pin
392 * 0x4a bit1 is 0 => secondary channel has 80-pin
394 * Certain laptops use short but suitable cables
395 * and don't implement the detect logic.
397 if (ali_cable_override(dev))
398 cbl = ATA_CBL_PATA40_SHORT;
400 pci_read_config_byte(dev, 0x4a, &tmpbyte);
401 if ((tmpbyte & (1 << hwif->channel)) == 0)
402 cbl = ATA_CBL_PATA80;
406 local_irq_restore(flags);
411 #if !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC)
413 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
414 * @hwif: interface to configure
416 * Obtain the IRQ tables for an ALi based IDE solution on the PC
417 * class platforms. This part of the code isn't applicable to the
418 * Sparc and PowerPC systems.
421 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
423 struct pci_dev *dev = to_pci_dev(hwif->dev);
425 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
426 1, 11, 0, 12, 0, 14, 0, 15 };
429 if (dev->device == PCI_DEVICE_ID_AL_M5229)
430 hwif->irq = hwif->channel ? 15 : 14;
434 * read IDE interface control
436 pci_read_config_byte(isa_dev, 0x58, &ideic);
439 ideic = ideic & 0x03;
441 /* get IRQ for IDE Controller */
442 if ((hwif->channel && ideic == 0x03) ||
443 (!hwif->channel && !ideic)) {
445 * get SIRQ1 routing table
447 pci_read_config_byte(isa_dev, 0x44, &inmir);
448 inmir = inmir & 0x0f;
449 irq = irq_routing_table[inmir];
450 } else if (hwif->channel && !(ideic & 0x01)) {
452 * get SIRQ2 routing table
454 pci_read_config_byte(isa_dev, 0x75, &inmir);
455 inmir = inmir & 0x0f;
456 irq = irq_routing_table[inmir];
463 #define init_hwif_ali15x3 NULL
464 #endif /* !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) */
467 * init_dma_ali15x3 - set up DMA on ALi15x3
468 * @hwif: IDE interface
471 * Set up the DMA functionality on the ALi 15x3.
474 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
475 const struct ide_port_info *d)
477 struct pci_dev *dev = to_pci_dev(hwif->dev);
478 unsigned long base = ide_pci_dma_base(hwif, d);
480 if (base == 0 || ide_pci_set_master(dev, d->name) < 0)
484 outb(inb(base + 2) & 0x60, base + 2);
486 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
487 hwif->name, base, base + 7);
489 if (ide_allocate_dma_engine(hwif))
492 ide_setup_dma(hwif, base);
497 static const struct ide_port_ops ali_port_ops = {
498 .set_pio_mode = ali_set_pio_mode,
499 .set_dma_mode = ali_set_dma_mode,
500 .udma_filter = ali_udma_filter,
501 .cable_detect = ali_cable_detect,
504 static const struct ide_dma_ops ali_dma_ops = {
505 .dma_host_set = ide_dma_host_set,
506 .dma_setup = ali15x3_dma_setup,
507 .dma_exec_cmd = ide_dma_exec_cmd,
508 .dma_start = ide_dma_start,
509 .dma_end = __ide_dma_end,
510 .dma_test_irq = ide_dma_test_irq,
511 .dma_lost_irq = ide_dma_lost_irq,
512 .dma_timeout = ide_dma_timeout,
515 static const struct ide_port_info ali15x3_chipset __devinitdata = {
517 .init_chipset = init_chipset_ali15x3,
518 .init_hwif = init_hwif_ali15x3,
519 .init_dma = init_dma_ali15x3,
520 .port_ops = &ali_port_ops,
521 .pio_mask = ATA_PIO5,
522 .swdma_mask = ATA_SWDMA2,
523 .mwdma_mask = ATA_MWDMA2,
527 * alim15x3_init_one - set up an ALi15x3 IDE controller
528 * @dev: PCI device to set up
530 * Perform the actual set up for an ALi15x3 that has been found by the
534 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
536 struct ide_port_info d = ali15x3_chipset;
537 u8 rev = dev->revision, idx = id->driver_data;
539 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
541 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
545 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
548 d.udma_mask = ATA_UDMA2;
549 else if (rev == 0xC2 || rev == 0xC3)
550 d.udma_mask = ATA_UDMA4;
551 else if (rev == 0xC4)
552 d.udma_mask = ATA_UDMA5;
554 d.udma_mask = ATA_UDMA6;
556 d.dma_ops = &ali_dma_ops;
558 d.host_flags |= IDE_HFLAG_NO_DMA;
560 d.mwdma_mask = d.swdma_mask = 0;
564 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
566 return ide_setup_pci_device(dev, &d);
570 static const struct pci_device_id alim15x3_pci_tbl[] = {
571 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
572 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
575 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
577 static struct pci_driver driver = {
578 .name = "ALI15x3_IDE",
579 .id_table = alim15x3_pci_tbl,
580 .probe = alim15x3_init_one,
583 static int __init ali15x3_ide_init(void)
585 return ide_pci_register_driver(&driver);
588 module_init(ali15x3_ide_init);
590 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
591 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
592 MODULE_LICENSE("GPL");