2 * Libata driver for the highpoint 366 and 368 UDMA66 ATA controllers.
4 * This driver is heavily based upon:
6 * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003
8 * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
9 * Portions Copyright (C) 2001 Sun Microsystems, Inc.
10 * Portions Copyright (C) 2003 Red Hat Inc
15 * Look into engine reset on timeout errors. Should not be
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/pci.h>
23 #include <linux/init.h>
24 #include <linux/blkdev.h>
25 #include <linux/delay.h>
26 #include <scsi/scsi_host.h>
27 #include <linux/libata.h>
29 #define DRV_NAME "pata_hpt366"
30 #define DRV_VERSION "0.6.8"
37 /* key for bus clock timings
39 * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA.
41 * 4:7 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA.
43 * 8:11 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file
45 * 12:15 cmd_low_time. Active time of DIOW_/DIOR_ during task file
47 * 16:18 udma_cycle_time. Clock cycles for UDMA xfer?
48 * 19:21 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer.
49 * 22:24 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file
53 * 30 PIO_MST enable. If set, the chip is in bus master mode during
58 static const struct hpt_clock hpt366_40[] = {
59 { XFER_UDMA_4, 0x900fd943 },
60 { XFER_UDMA_3, 0x900ad943 },
61 { XFER_UDMA_2, 0x900bd943 },
62 { XFER_UDMA_1, 0x9008d943 },
63 { XFER_UDMA_0, 0x9008d943 },
65 { XFER_MW_DMA_2, 0xa008d943 },
66 { XFER_MW_DMA_1, 0xa010d955 },
67 { XFER_MW_DMA_0, 0xa010d9fc },
69 { XFER_PIO_4, 0xc008d963 },
70 { XFER_PIO_3, 0xc010d974 },
71 { XFER_PIO_2, 0xc010d997 },
72 { XFER_PIO_1, 0xc010d9c7 },
73 { XFER_PIO_0, 0xc018d9d9 },
77 static const struct hpt_clock hpt366_33[] = {
78 { XFER_UDMA_4, 0x90c9a731 },
79 { XFER_UDMA_3, 0x90cfa731 },
80 { XFER_UDMA_2, 0x90caa731 },
81 { XFER_UDMA_1, 0x90cba731 },
82 { XFER_UDMA_0, 0x90c8a731 },
84 { XFER_MW_DMA_2, 0xa0c8a731 },
85 { XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */
86 { XFER_MW_DMA_0, 0xa0c8a797 },
88 { XFER_PIO_4, 0xc0c8a731 },
89 { XFER_PIO_3, 0xc0c8a742 },
90 { XFER_PIO_2, 0xc0d0a753 },
91 { XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */
92 { XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */
96 static const struct hpt_clock hpt366_25[] = {
97 { XFER_UDMA_4, 0x90c98521 },
98 { XFER_UDMA_3, 0x90cf8521 },
99 { XFER_UDMA_2, 0x90cf8521 },
100 { XFER_UDMA_1, 0x90cb8521 },
101 { XFER_UDMA_0, 0x90cb8521 },
103 { XFER_MW_DMA_2, 0xa0ca8521 },
104 { XFER_MW_DMA_1, 0xa0ca8532 },
105 { XFER_MW_DMA_0, 0xa0ca8575 },
107 { XFER_PIO_4, 0xc0ca8521 },
108 { XFER_PIO_3, 0xc0ca8532 },
109 { XFER_PIO_2, 0xc0ca8542 },
110 { XFER_PIO_1, 0xc0d08572 },
111 { XFER_PIO_0, 0xc0d08585 },
115 static const char *bad_ata33[] = {
116 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
117 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
118 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
120 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
121 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
122 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
126 static const char *bad_ata66_4[] = {
145 static const char *bad_ata66_3[] = {
150 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
152 unsigned char model_num[ATA_ID_PROD_LEN + 1];
155 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
157 while (list[i] != NULL) {
158 if (!strcmp(list[i], model_num)) {
159 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
169 * hpt366_filter - mode selection filter
172 * Block UDMA on devices that cause trouble with this controller.
175 static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
177 if (adev->class == ATA_DEV_ATA) {
178 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
179 mask &= ~ATA_MASK_UDMA;
180 if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
181 mask &= ~(0xF8 << ATA_SHIFT_UDMA);
182 if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
183 mask &= ~(0xF0 << ATA_SHIFT_UDMA);
184 } else if (adev->class == ATA_DEV_ATAPI)
185 mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
187 return ata_bmdma_mode_filter(adev, mask);
190 static int hpt36x_cable_detect(struct ata_port *ap)
192 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
196 * Each channel of pata_hpt366 occupies separate PCI function
197 * as the primary channel and bit1 indicates the cable type.
199 pci_read_config_byte(pdev, 0x5A, &ata66);
201 return ATA_CBL_PATA40;
202 return ATA_CBL_PATA80;
205 static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
208 struct hpt_clock *clocks = ap->host->private_data;
209 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
210 u32 addr = 0x40 + 4 * adev->devno;
213 /* determine timing mask and find matching clock entry */
214 if (mode < XFER_MW_DMA_0)
216 else if (mode < XFER_UDMA_0)
221 while (clocks->xfer_mode) {
222 if (clocks->xfer_mode == mode)
226 if (!clocks->xfer_mode)
230 * Combine new mode bits with old config bits and disable
231 * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
232 * problems handling I/O errors later.
234 pci_read_config_dword(pdev, addr, ®);
235 reg = ((reg & ~mask) | (clocks->timing & mask)) & ~0xc0000000;
236 pci_write_config_dword(pdev, addr, reg);
240 * hpt366_set_piomode - PIO setup
242 * @adev: device on the interface
244 * Perform PIO mode setup.
247 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
249 hpt366_set_mode(ap, adev, adev->pio_mode);
253 * hpt366_set_dmamode - DMA timing setup
255 * @adev: Device being configured
257 * Set up the channel for MWDMA or UDMA modes. Much the same as with
258 * PIO, load the mode number and then set MWDMA or UDMA flag.
261 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
263 hpt366_set_mode(ap, adev, adev->dma_mode);
266 static struct scsi_host_template hpt36x_sht = {
267 ATA_BMDMA_SHT(DRV_NAME),
271 * Configuration for HPT366/68
274 static struct ata_port_operations hpt366_port_ops = {
275 .inherits = &ata_bmdma_port_ops,
276 .cable_detect = hpt36x_cable_detect,
277 .mode_filter = hpt366_filter,
278 .set_piomode = hpt366_set_piomode,
279 .set_dmamode = hpt366_set_dmamode,
283 * hpt36x_init_chipset - common chip setup
286 * Perform the chip setup work that must be done at both init and
290 static void hpt36x_init_chipset(struct pci_dev *dev)
293 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
294 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
295 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
296 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
298 pci_read_config_byte(dev, 0x51, &drive_fast);
299 if (drive_fast & 0x80)
300 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
304 * hpt36x_init_one - Initialise an HPT366/368
306 * @id: Entry in match table
308 * Initialise an HPT36x device. There are some interesting complications
309 * here. Firstly the chip may report 366 and be one of several variants.
310 * Secondly all the timings depend on the clock for the chip which we must
313 * This is the known chip mappings. It may be missing a couple of later
316 * Chip version PCI Rev Notes
317 * HPT366 4 (HPT366) 0 UDMA66
318 * HPT366 4 (HPT366) 1 UDMA66
319 * HPT368 4 (HPT366) 2 UDMA66
320 * HPT37x/30x 4 (HPT366) 3+ Other driver
324 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
326 static const struct ata_port_info info_hpt366 = {
327 .flags = ATA_FLAG_SLAVE_POSS,
328 .pio_mask = ATA_PIO4,
329 .mwdma_mask = ATA_MWDMA2,
330 .udma_mask = ATA_UDMA4,
331 .port_ops = &hpt366_port_ops
333 const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
339 rc = pcim_enable_device(dev);
343 /* May be a later chip in disguise. Check */
344 /* Newer chips are not in the HPT36x driver. Ignore them */
345 if (dev->revision > 2)
348 hpt36x_init_chipset(dev);
350 pci_read_config_dword(dev, 0x40, ®1);
352 /* PCI clocking determines the ATA timing values to use */
353 /* info_hpt366 is safe against re-entry so we can scribble on it */
354 switch((reg1 & 0x700) >> 8) {
365 /* Now kick off ATA set up */
366 return ata_pci_sff_init_one(dev, ppi, &hpt36x_sht, hpriv);
370 static int hpt36x_reinit_one(struct pci_dev *dev)
372 struct ata_host *host = dev_get_drvdata(&dev->dev);
375 rc = ata_pci_device_do_resume(dev);
378 hpt36x_init_chipset(dev);
379 ata_host_resume(host);
384 static const struct pci_device_id hpt36x[] = {
385 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
389 static struct pci_driver hpt36x_pci_driver = {
392 .probe = hpt36x_init_one,
393 .remove = ata_pci_remove_one,
395 .suspend = ata_pci_device_suspend,
396 .resume = hpt36x_reinit_one,
400 static int __init hpt36x_init(void)
402 return pci_register_driver(&hpt36x_pci_driver);
405 static void __exit hpt36x_exit(void)
407 pci_unregister_driver(&hpt36x_pci_driver);
410 MODULE_AUTHOR("Alan Cox");
411 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
412 MODULE_LICENSE("GPL");
413 MODULE_DEVICE_TABLE(pci, hpt36x);
414 MODULE_VERSION(DRV_VERSION);
416 module_init(hpt36x_init);
417 module_exit(hpt36x_exit);