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 "0.6.2"
37 /* key for bus clock timings
39 * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW
40 * DMA. cycles = value + 1
41 * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW
42 * DMA. cycles = value + 1
43 * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file
45 * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file
47 * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer.
48 * during task file register access.
49 * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA
51 * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task
55 * 30 PIO_MST enable. if set, the chip is in bus master mode during
60 static const struct hpt_clock hpt366_40[] = {
61 { XFER_UDMA_4, 0x900fd943 },
62 { XFER_UDMA_3, 0x900ad943 },
63 { XFER_UDMA_2, 0x900bd943 },
64 { XFER_UDMA_1, 0x9008d943 },
65 { XFER_UDMA_0, 0x9008d943 },
67 { XFER_MW_DMA_2, 0xa008d943 },
68 { XFER_MW_DMA_1, 0xa010d955 },
69 { XFER_MW_DMA_0, 0xa010d9fc },
71 { XFER_PIO_4, 0xc008d963 },
72 { XFER_PIO_3, 0xc010d974 },
73 { XFER_PIO_2, 0xc010d997 },
74 { XFER_PIO_1, 0xc010d9c7 },
75 { XFER_PIO_0, 0xc018d9d9 },
79 static const struct hpt_clock hpt366_33[] = {
80 { XFER_UDMA_4, 0x90c9a731 },
81 { XFER_UDMA_3, 0x90cfa731 },
82 { XFER_UDMA_2, 0x90caa731 },
83 { XFER_UDMA_1, 0x90cba731 },
84 { XFER_UDMA_0, 0x90c8a731 },
86 { XFER_MW_DMA_2, 0xa0c8a731 },
87 { XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */
88 { XFER_MW_DMA_0, 0xa0c8a797 },
90 { XFER_PIO_4, 0xc0c8a731 },
91 { XFER_PIO_3, 0xc0c8a742 },
92 { XFER_PIO_2, 0xc0d0a753 },
93 { XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */
94 { XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */
98 static const struct hpt_clock hpt366_25[] = {
99 { XFER_UDMA_4, 0x90c98521 },
100 { XFER_UDMA_3, 0x90cf8521 },
101 { XFER_UDMA_2, 0x90cf8521 },
102 { XFER_UDMA_1, 0x90cb8521 },
103 { XFER_UDMA_0, 0x90cb8521 },
105 { XFER_MW_DMA_2, 0xa0ca8521 },
106 { XFER_MW_DMA_1, 0xa0ca8532 },
107 { XFER_MW_DMA_0, 0xa0ca8575 },
109 { XFER_PIO_4, 0xc0ca8521 },
110 { XFER_PIO_3, 0xc0ca8532 },
111 { XFER_PIO_2, 0xc0ca8542 },
112 { XFER_PIO_1, 0xc0d08572 },
113 { XFER_PIO_0, 0xc0d08585 },
117 static const char *bad_ata33[] = {
118 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
119 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
120 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
122 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
123 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
124 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
128 static const char *bad_ata66_4[] = {
147 static const char *bad_ata66_3[] = {
152 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
154 unsigned char model_num[ATA_ID_PROD_LEN + 1];
157 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
159 while (list[i] != NULL) {
160 if (!strcmp(list[i], model_num)) {
161 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
171 * hpt366_filter - mode selection filter
174 * Block UDMA on devices that cause trouble with this controller.
177 static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
179 if (adev->class == ATA_DEV_ATA) {
180 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
181 mask &= ~ATA_MASK_UDMA;
182 if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
183 mask &= ~(0xF8 << ATA_SHIFT_UDMA);
184 if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
185 mask &= ~(0xF0 << ATA_SHIFT_UDMA);
187 return ata_bmdma_mode_filter(adev, mask);
191 * hpt36x_find_mode - reset the hpt36x bus
193 * @speed: transfer mode
195 * Return the 32bit register programming information for this channel
196 * that matches the speed provided.
199 static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
201 struct hpt_clock *clocks = ap->host->private_data;
203 while(clocks->xfer_speed) {
204 if (clocks->xfer_speed == speed)
205 return clocks->timing;
209 return 0xffffffffU; /* silence compiler warning */
212 static int hpt36x_cable_detect(struct ata_port *ap)
215 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
217 pci_read_config_byte(pdev, 0x5A, &ata66);
218 if (ata66 & (1 << ap->port_no))
219 return ATA_CBL_PATA40;
220 return ATA_CBL_PATA80;
224 * hpt366_set_piomode - PIO setup
226 * @adev: device on the interface
228 * Perform PIO mode setup.
231 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
233 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
239 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
240 addr2 = 0x51 + 4 * ap->port_no;
242 /* Fast interrupt prediction disable, hold off interrupt disable */
243 pci_read_config_byte(pdev, addr2, &fast);
246 pci_write_config_byte(pdev, addr2, fast);
249 pci_read_config_dword(pdev, addr1, ®);
250 mode = hpt36x_find_mode(ap, adev->pio_mode);
251 mode &= ~0x8000000; /* No FIFO in PIO */
252 mode &= ~0x30070000; /* Leave config bits alone */
253 reg &= 0x30070000; /* Strip timing bits */
254 pci_write_config_dword(pdev, addr1, reg | mode);
258 * hpt366_set_dmamode - DMA timing setup
260 * @adev: Device being configured
262 * Set up the channel for MWDMA or UDMA modes. Much the same as with
263 * PIO, load the mode number and then set MWDMA or UDMA flag.
266 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
268 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
274 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
275 addr2 = 0x51 + 4 * ap->port_no;
277 /* Fast interrupt prediction disable, hold off interrupt disable */
278 pci_read_config_byte(pdev, addr2, &fast);
281 pci_write_config_byte(pdev, addr2, fast);
284 pci_read_config_dword(pdev, addr1, ®);
285 mode = hpt36x_find_mode(ap, adev->dma_mode);
286 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
287 mode &= ~0xC0000000; /* Leave config bits alone */
288 reg &= 0xC0000000; /* Strip timing bits */
289 pci_write_config_dword(pdev, addr1, reg | mode);
292 static struct scsi_host_template hpt36x_sht = {
293 ATA_BMDMA_SHT(DRV_NAME),
297 * Configuration for HPT366/68
300 static struct ata_port_operations hpt366_port_ops = {
301 .inherits = &ata_bmdma_port_ops,
302 .cable_detect = hpt36x_cable_detect,
303 .mode_filter = hpt366_filter,
304 .set_piomode = hpt366_set_piomode,
305 .set_dmamode = hpt366_set_dmamode,
309 * hpt36x_init_chipset - common chip setup
312 * Perform the chip setup work that must be done at both init and
316 static void hpt36x_init_chipset(struct pci_dev *dev)
319 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
320 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
321 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
322 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
324 pci_read_config_byte(dev, 0x51, &drive_fast);
325 if (drive_fast & 0x80)
326 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
330 * hpt36x_init_one - Initialise an HPT366/368
332 * @id: Entry in match table
334 * Initialise an HPT36x device. There are some interesting complications
335 * here. Firstly the chip may report 366 and be one of several variants.
336 * Secondly all the timings depend on the clock for the chip which we must
339 * This is the known chip mappings. It may be missing a couple of later
342 * Chip version PCI Rev Notes
343 * HPT366 4 (HPT366) 0 UDMA66
344 * HPT366 4 (HPT366) 1 UDMA66
345 * HPT368 4 (HPT366) 2 UDMA66
346 * HPT37x/30x 4 (HPT366) 3+ Other driver
350 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
352 static const struct ata_port_info info_hpt366 = {
353 .flags = ATA_FLAG_SLAVE_POSS,
356 .udma_mask = ATA_UDMA4,
357 .port_ops = &hpt366_port_ops
359 const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
366 rc = pcim_enable_device(dev);
370 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
373 /* May be a later chip in disguise. Check */
374 /* Newer chips are not in the HPT36x driver. Ignore them */
378 hpt36x_init_chipset(dev);
380 pci_read_config_dword(dev, 0x40, ®1);
382 /* PCI clocking determines the ATA timing values to use */
383 /* info_hpt366 is safe against re-entry so we can scribble on it */
384 switch((reg1 & 0x700) >> 8) {
395 /* Now kick off ATA set up */
396 return ata_pci_sff_init_one(dev, ppi, &hpt36x_sht, hpriv);
400 static int hpt36x_reinit_one(struct pci_dev *dev)
402 struct ata_host *host = dev_get_drvdata(&dev->dev);
405 rc = ata_pci_device_do_resume(dev);
408 hpt36x_init_chipset(dev);
409 ata_host_resume(host);
414 static const struct pci_device_id hpt36x[] = {
415 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
419 static struct pci_driver hpt36x_pci_driver = {
422 .probe = hpt36x_init_one,
423 .remove = ata_pci_remove_one,
425 .suspend = ata_pci_device_suspend,
426 .resume = hpt36x_reinit_one,
430 static int __init hpt36x_init(void)
432 return pci_register_driver(&hpt36x_pci_driver);
435 static void __exit hpt36x_exit(void)
437 pci_unregister_driver(&hpt36x_pci_driver);
440 MODULE_AUTHOR("Alan Cox");
441 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
442 MODULE_LICENSE("GPL");
443 MODULE_DEVICE_TABLE(pci, hpt36x);
444 MODULE_VERSION(DRV_VERSION);
446 module_init(hpt36x_init);
447 module_exit(hpt36x_exit);