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);
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, XFER_PIO_0 + pio, &t, T, 1);
84 t.setup = clamp_val(t.setup, 1, 8) & 7;
85 t.active = clamp_val(t.active, 1, 8) & 7;
86 t.recover = clamp_val(t.recover, 1, 16) & 15;
89 * PIO mode => ATA FIFO on, ATAPI FIFO off
91 ali_fifo_control(hwif, drive, (drive->media == ide_disk) ? 0x05 : 0x00);
93 pci_write_config_byte(dev, port, t.setup);
94 pci_write_config_byte(dev, port + unit + 2,
95 (t.active << 4) | t.recover);
99 * ali_udma_filter - compute UDMA mask
102 * Return available UDMA modes.
104 * The actual rules for the ALi are:
105 * No UDMA on revisions <= 0x20
106 * Disk only for revisions < 0xC2
107 * Not WDC drives on M1543C-E (?)
110 static u8 ali_udma_filter(ide_drive_t *drive)
112 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
113 if (drive->media != ide_disk)
115 if (chip_is_1543c_e &&
116 strstr((char *)&drive->id[ATA_ID_PROD], "WDC "))
120 return drive->hwif->ultra_mask;
124 * ali_set_dma_mode - set host controller for DMA mode
128 * Configure the hardware for the desired IDE transfer mode.
131 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
133 ide_hwif_t *hwif = drive->hwif;
134 struct pci_dev *dev = to_pci_dev(hwif->dev);
136 u8 unit = drive->dn & 1;
138 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
140 if (speed == XFER_UDMA_6)
143 if (speed < XFER_UDMA_0) {
144 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
146 * clear "ultra enable" bit
148 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
149 tmpbyte &= ultra_enable;
150 pci_write_config_byte(dev, m5229_udma, tmpbyte);
153 * FIXME: Oh, my... DMA timings are never set.
156 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
157 tmpbyte &= (0x0f << ((1-unit) << 2));
159 * enable ultra dma and set timing
161 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
162 pci_write_config_byte(dev, m5229_udma, tmpbyte);
163 if (speed >= XFER_UDMA_3) {
164 pci_read_config_byte(dev, 0x4b, &tmpbyte);
166 pci_write_config_byte(dev, 0x4b, tmpbyte);
172 * ali_dma_check - DMA check
173 * @drive: target device
176 * Returns 1 if the DMA cannot be performed, zero on success.
179 static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd)
181 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
182 if (cmd->tf_flags & IDE_TFLAG_WRITE)
183 return 1; /* try PIO instead of DMA */
189 * init_chipset_ali15x3 - Initialise an ALi IDE controller
192 * This function initializes the ALI IDE controller and where
193 * appropriate also sets up the 1533 southbridge.
196 static int init_chipset_ali15x3(struct pci_dev *dev)
200 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
202 m5229_revision = dev->revision;
204 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
206 local_irq_save(flags);
208 if (m5229_revision < 0xC2) {
210 * revision 0x20 (1543-E, 1543-F)
211 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
212 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
214 pci_read_config_byte(dev, 0x4b, &tmpbyte);
218 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
220 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
222 if (m5229_revision >= 0x20 && isa_dev) {
223 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
224 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
230 * 1543C-B?, 1535, 1535D, 1553
231 * Note 1: not all "motherboard" support this detection
232 * Note 2: if no udma 66 device, the detection may "error".
233 * but in this case, we will not set the device to
234 * ultra 66, the detection result is not important
238 * enable "Cable Detection", m5229, 0x4b, bit3
240 pci_read_config_byte(dev, 0x4b, &tmpbyte);
241 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
244 * We should only tune the 1533 enable if we are using an ALi
245 * North bridge. We might have no north found on some zany
246 * box without a device at 0:0.0. The ALi bridge will be at
247 * 0:0.0 so if we didn't find one we know what is cooking.
249 if (north && north->vendor != PCI_VENDOR_ID_AL)
252 if (m5229_revision < 0xC5 && isa_dev)
255 * set south-bridge's enable bit, m1533, 0x79
258 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
259 if (m5229_revision == 0xC2) {
261 * 1543C-B0 (m1533, 0x79, bit 2)
263 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
264 } else if (m5229_revision >= 0xC3) {
266 * 1553/1535 (m1533, 0x79, bit 1)
268 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
274 * CD_ROM DMA on (m5229, 0x53, bit0)
275 * Enable this bit even if we want to use PIO.
276 * PIO FIFO off (m5229, 0x53, bit1)
277 * The hardware will use 0x54h and 0x55h to control PIO FIFO.
278 * (Not on later devices it seems)
280 * 0x53 changes meaning on later revs - we must no touch
281 * bit 1 on them. Need to check if 0x20 is the right break.
283 if (m5229_revision >= 0x20) {
284 pci_read_config_byte(dev, 0x53, &tmpbyte);
286 if (m5229_revision <= 0x20)
287 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
288 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
293 pci_write_config_byte(dev, 0x53, tmpbyte);
296 pci_dev_put(isa_dev);
297 local_irq_restore(flags);
302 * Cable special cases
305 static const struct dmi_system_id cable_dmi_table[] = {
307 .ident = "HP Pavilion N5430",
309 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
310 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
314 .ident = "Toshiba Satellite S1800-814",
316 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
317 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
323 static int ali_cable_override(struct pci_dev *pdev)
326 if (pdev->subsystem_vendor == 0x10CF &&
327 pdev->subsystem_device == 0x10AF)
330 /* Mitac 8317 (Winbook-A) and relatives */
331 if (pdev->subsystem_vendor == 0x1071 &&
332 pdev->subsystem_device == 0x8317)
336 if (dmi_check_system(cable_dmi_table))
343 * ali_cable_detect - cable detection
344 * @hwif: IDE interface
346 * This checks if the controller and the cable are capable
347 * of UDMA66 transfers. It doesn't check the drives.
350 static u8 ali_cable_detect(ide_hwif_t *hwif)
352 struct pci_dev *dev = to_pci_dev(hwif->dev);
353 u8 cbl = ATA_CBL_PATA40, tmpbyte;
355 if (m5229_revision >= 0xC2) {
357 * m5229 80-pin cable detection (from Host View)
359 * 0x4a bit0 is 0 => primary channel has 80-pin
360 * 0x4a bit1 is 0 => secondary channel has 80-pin
362 * Certain laptops use short but suitable cables
363 * and don't implement the detect logic.
365 if (ali_cable_override(dev))
366 cbl = ATA_CBL_PATA40_SHORT;
368 pci_read_config_byte(dev, 0x4a, &tmpbyte);
369 if ((tmpbyte & (1 << hwif->channel)) == 0)
370 cbl = ATA_CBL_PATA80;
377 #ifndef CONFIG_SPARC64
379 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
380 * @hwif: interface to configure
382 * Obtain the IRQ tables for an ALi based IDE solution on the PC
383 * class platforms. This part of the code isn't applicable to the
387 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
390 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
391 1, 11, 0, 12, 0, 14, 0, 15 };
396 * read IDE interface control
398 pci_read_config_byte(isa_dev, 0x58, &ideic);
401 ideic = ideic & 0x03;
403 /* get IRQ for IDE Controller */
404 if ((hwif->channel && ideic == 0x03) ||
405 (!hwif->channel && !ideic)) {
407 * get SIRQ1 routing table
409 pci_read_config_byte(isa_dev, 0x44, &inmir);
410 inmir = inmir & 0x0f;
411 irq = irq_routing_table[inmir];
412 } else if (hwif->channel && !(ideic & 0x01)) {
414 * get SIRQ2 routing table
416 pci_read_config_byte(isa_dev, 0x75, &inmir);
417 inmir = inmir & 0x0f;
418 irq = irq_routing_table[inmir];
425 #define init_hwif_ali15x3 NULL
426 #endif /* CONFIG_SPARC64 */
429 * init_dma_ali15x3 - set up DMA on ALi15x3
430 * @hwif: IDE interface
433 * Set up the DMA functionality on the ALi 15x3.
436 static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
437 const struct ide_port_info *d)
439 struct pci_dev *dev = to_pci_dev(hwif->dev);
440 unsigned long base = ide_pci_dma_base(hwif, d);
445 hwif->dma_base = base;
447 if (ide_pci_check_simplex(hwif, d) < 0)
450 if (ide_pci_set_master(dev, d->name) < 0)
454 outb(inb(base + 2) & 0x60, base + 2);
456 printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
457 hwif->name, base, base + 7);
459 if (ide_allocate_dma_engine(hwif))
465 static const struct ide_port_ops ali_port_ops = {
466 .set_pio_mode = ali_set_pio_mode,
467 .set_dma_mode = ali_set_dma_mode,
468 .udma_filter = ali_udma_filter,
469 .cable_detect = ali_cable_detect,
472 static const struct ide_dma_ops ali_dma_ops = {
473 .dma_host_set = ide_dma_host_set,
474 .dma_setup = ide_dma_setup,
475 .dma_start = ide_dma_start,
476 .dma_end = ide_dma_end,
477 .dma_test_irq = ide_dma_test_irq,
478 .dma_lost_irq = ide_dma_lost_irq,
479 .dma_check = ali_dma_check,
480 .dma_timer_expiry = ide_dma_sff_timer_expiry,
481 .dma_sff_read_status = ide_dma_sff_read_status,
484 static const struct ide_port_info ali15x3_chipset __devinitdata = {
486 .init_chipset = init_chipset_ali15x3,
487 .init_hwif = init_hwif_ali15x3,
488 .init_dma = init_dma_ali15x3,
489 .port_ops = &ali_port_ops,
490 .dma_ops = &sff_dma_ops,
491 .pio_mask = ATA_PIO5,
492 .swdma_mask = ATA_SWDMA2,
493 .mwdma_mask = ATA_MWDMA2,
497 * alim15x3_init_one - set up an ALi15x3 IDE controller
498 * @dev: PCI device to set up
500 * Perform the actual set up for an ALi15x3 that has been found by the
504 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
506 struct ide_port_info d = ali15x3_chipset;
507 u8 rev = dev->revision, idx = id->driver_data;
509 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
511 d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
515 d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
518 d.udma_mask = ATA_UDMA2;
519 else if (rev == 0xC2 || rev == 0xC3)
520 d.udma_mask = ATA_UDMA4;
521 else if (rev == 0xC4)
522 d.udma_mask = ATA_UDMA5;
524 d.udma_mask = ATA_UDMA6;
526 d.dma_ops = &ali_dma_ops;
528 d.host_flags |= IDE_HFLAG_NO_DMA;
530 d.mwdma_mask = d.swdma_mask = 0;
534 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
536 return ide_pci_init_one(dev, &d, NULL);
540 static const struct pci_device_id alim15x3_pci_tbl[] = {
541 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
542 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
545 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
547 static struct pci_driver alim15x3_pci_driver = {
548 .name = "ALI15x3_IDE",
549 .id_table = alim15x3_pci_tbl,
550 .probe = alim15x3_init_one,
551 .remove = ide_pci_remove,
552 .suspend = ide_pci_suspend,
553 .resume = ide_pci_resume,
556 static int __init ali15x3_ide_init(void)
558 return ide_pci_register_driver(&alim15x3_pci_driver);
561 static void __exit ali15x3_ide_exit(void)
563 pci_unregister_driver(&alim15x3_pci_driver);
566 module_init(ali15x3_ide_init);
567 module_exit(ali15x3_ide_exit);
569 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox, Bartlomiej Zolnierkiewicz");
570 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
571 MODULE_LICENSE("GPL");