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
69 * Program the controller for the given PIO mode.
72 static void ali_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
74 struct pci_dev *dev = to_pci_dev(hwif->dev);
75 ide_drive_t *pair = ide_get_pair_dev(drive);
76 int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
77 unsigned long T = 1000000 / bus_speed; /* PCI clock based */
78 int port = hwif->channel ? 0x5c : 0x58;
79 u8 unit = drive->dn & 1;
82 ide_timing_compute(drive, drive->pio_mode, &t, T, 1);
86 ide_timing_compute(pair, pair->pio_mode, &p, T, 1);
87 ide_timing_merge(&p, &t, &t,
88 IDE_TIMING_SETUP | IDE_TIMING_8BIT);
90 ide_timing_compute(pair, pair->dma_mode, &p, T, 1);
91 ide_timing_merge(&p, &t, &t,
92 IDE_TIMING_SETUP | IDE_TIMING_8BIT);
96 t.setup = clamp_val(t.setup, 1, 8) & 7;
97 t.act8b = clamp_val(t.act8b, 1, 8) & 7;
98 t.rec8b = clamp_val(t.rec8b, 1, 16) & 15;
99 t.active = clamp_val(t.active, 1, 8) & 7;
100 t.recover = clamp_val(t.recover, 1, 16) & 15;
103 * PIO mode => ATA FIFO on, ATAPI FIFO off
105 ali_fifo_control(hwif, drive, (drive->media == ide_disk) ? 0x05 : 0x00);
107 pci_write_config_byte(dev, port, t.setup);
108 pci_write_config_byte(dev, port + 1, (t.act8b << 4) | t.rec8b);
109 pci_write_config_byte(dev, port + unit + 2,
110 (t.active << 4) | t.recover);
114 * ali_udma_filter - compute UDMA mask
117 * Return available UDMA modes.
119 * The actual rules for the ALi are:
120 * No UDMA on revisions <= 0x20
121 * Disk only for revisions < 0xC2
122 * Not WDC drives on M1543C-E (?)
125 static u8 ali_udma_filter(ide_drive_t *drive)
127 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
128 if (drive->media != ide_disk)
130 if (chip_is_1543c_e &&
131 strstr((char *)&drive->id[ATA_ID_PROD], "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_hwif_t *hwif, ide_drive_t *drive)
148 struct pci_dev *dev = to_pci_dev(hwif->dev);
149 const u8 speed = drive->dma_mode;
151 u8 unit = drive->dn & 1;
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 * ali_dma_check - DMA check
188 * @drive: target device
191 * Returns 1 if the DMA cannot be performed, zero on success.
194 static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd)
196 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
197 if (cmd->tf_flags & IDE_TFLAG_WRITE)
198 return 1; /* try PIO instead of DMA */
204 * init_chipset_ali15x3 - Initialise an ALi IDE controller
207 * This function initializes the ALI IDE controller and where
208 * appropriate also sets up the 1533 southbridge.
211 static int init_chipset_ali15x3(struct pci_dev *dev)
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.
365 static u8 ali_cable_detect(ide_hwif_t *hwif)
367 struct pci_dev *dev = to_pci_dev(hwif->dev);
368 u8 cbl = ATA_CBL_PATA40, tmpbyte;
370 if (m5229_revision >= 0xC2) {
372 * m5229 80-pin cable detection (from Host View)
374 * 0x4a bit0 is 0 => primary channel has 80-pin
375 * 0x4a bit1 is 0 => secondary channel has 80-pin
377 * Certain laptops use short but suitable cables
378 * and don't implement the detect logic.
380 if (ali_cable_override(dev))
381 cbl = ATA_CBL_PATA40_SHORT;
383 pci_read_config_byte(dev, 0x4a, &tmpbyte);
384 if ((tmpbyte & (1 << hwif->channel)) == 0)
385 cbl = ATA_CBL_PATA80;
392 #ifndef CONFIG_SPARC64
394 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
395 * @hwif: interface to configure
397 * Obtain the IRQ tables for an ALi based IDE solution on the PC
398 * class platforms. This part of the code isn't applicable to the
402 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
405 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
406 1, 11, 0, 12, 0, 14, 0, 15 };
411 * read IDE interface control
413 pci_read_config_byte(isa_dev, 0x58, &ideic);
416 ideic = ideic & 0x03;
418 /* get IRQ for IDE Controller */
419 if ((hwif->channel && ideic == 0x03) ||
420 (!hwif->channel && !ideic)) {
422 * get SIRQ1 routing table
424 pci_read_config_byte(isa_dev, 0x44, &inmir);
425 inmir = inmir & 0x0f;
426 irq = irq_routing_table[inmir];
427 } else if (hwif->channel && !(ideic & 0x01)) {
429 * get SIRQ2 routing table
431 pci_read_config_byte(isa_dev, 0x75, &inmir);
432 inmir = inmir & 0x0f;
433 irq = irq_routing_table[inmir];
440 #define init_hwif_ali15x3 NULL
441 #endif /* CONFIG_SPARC64 */
444 * init_dma_ali15x3 - set up DMA on ALi15x3
445 * @hwif: IDE interface
448 * Set up the DMA functionality on the ALi 15x3.
451 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
452 const struct ide_port_info *d)
454 struct pci_dev *dev = to_pci_dev(hwif->dev);
455 unsigned long base = ide_pci_dma_base(hwif, d);
460 hwif->dma_base = base;
462 if (ide_pci_check_simplex(hwif, d) < 0)
465 if (ide_pci_set_master(dev, d->name) < 0)
469 outb(inb(base + 2) & 0x60, base + 2);
471 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
472 hwif->name, base, base + 7);
474 if (ide_allocate_dma_engine(hwif))
480 static const struct ide_port_ops ali_port_ops = {
481 .set_pio_mode = ali_set_pio_mode,
482 .set_dma_mode = ali_set_dma_mode,
483 .udma_filter = ali_udma_filter,
484 .cable_detect = ali_cable_detect,
487 static const struct ide_dma_ops ali_dma_ops = {
488 .dma_host_set = ide_dma_host_set,
489 .dma_setup = ide_dma_setup,
490 .dma_start = ide_dma_start,
491 .dma_end = ide_dma_end,
492 .dma_test_irq = ide_dma_test_irq,
493 .dma_lost_irq = ide_dma_lost_irq,
494 .dma_check = ali_dma_check,
495 .dma_timer_expiry = ide_dma_sff_timer_expiry,
496 .dma_sff_read_status = ide_dma_sff_read_status,
499 static const struct ide_port_info ali15x3_chipset __devinitdata = {
501 .init_chipset = init_chipset_ali15x3,
502 .init_hwif = init_hwif_ali15x3,
503 .init_dma = init_dma_ali15x3,
504 .port_ops = &ali_port_ops,
505 .dma_ops = &sff_dma_ops,
506 .pio_mask = ATA_PIO5,
507 .swdma_mask = ATA_SWDMA2,
508 .mwdma_mask = ATA_MWDMA2,
512 * alim15x3_init_one - set up an ALi15x3 IDE controller
513 * @dev: PCI device to set up
515 * Perform the actual set up for an ALi15x3 that has been found by the
519 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
521 struct ide_port_info d = ali15x3_chipset;
522 u8 rev = dev->revision, idx = id->driver_data;
524 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
526 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
530 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
533 d.udma_mask = ATA_UDMA2;
534 else if (rev == 0xC2 || rev == 0xC3)
535 d.udma_mask = ATA_UDMA4;
536 else if (rev == 0xC4)
537 d.udma_mask = ATA_UDMA5;
539 d.udma_mask = ATA_UDMA6;
541 d.dma_ops = &ali_dma_ops;
543 d.host_flags |= IDE_HFLAG_NO_DMA;
545 d.mwdma_mask = d.swdma_mask = 0;
549 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
551 return ide_pci_init_one(dev, &d, NULL);
555 static const struct pci_device_id alim15x3_pci_tbl[] = {
556 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
557 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
560 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
562 static struct pci_driver alim15x3_pci_driver = {
563 .name = "ALI15x3_IDE",
564 .id_table = alim15x3_pci_tbl,
565 .probe = alim15x3_init_one,
566 .remove = ide_pci_remove,
567 .suspend = ide_pci_suspend,
568 .resume = ide_pci_resume,
571 static int __init ali15x3_ide_init(void)
573 return ide_pci_register_driver(&alim15x3_pci_driver);
576 static void __exit ali15x3_ide_exit(void)
578 pci_unregister_driver(&alim15x3_pci_driver);
581 module_init(ali15x3_ide_init);
582 module_exit(ali15x3_ide_exit);
584 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox, Bartlomiej Zolnierkiewicz");
585 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
586 MODULE_LICENSE("GPL");