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
14 * Look into engine reset on timeout errors. Should not be required.
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/pci.h>
22 #include <linux/init.h>
23 #include <linux/blkdev.h>
24 #include <linux/delay.h>
25 #include <scsi/scsi_host.h>
26 #include <linux/libata.h>
28 #define DRV_NAME "pata_hpt366"
29 #define DRV_VERSION "0.6.11"
36 /* key for bus clock timings
38 * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA.
40 * 4:7 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA.
42 * 8:11 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file
44 * 12:15 cmd_low_time. Active time of DIOW_/DIOR_ during task file
46 * 16:18 udma_cycle_time. Clock cycles for UDMA xfer?
47 * 19:21 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer.
48 * 22:24 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file
52 * 30 PIO_MST enable. If set, the chip is in bus master mode during
57 static const struct hpt_clock hpt366_40[] = {
58 { XFER_UDMA_4, 0x900fd943 },
59 { XFER_UDMA_3, 0x900ad943 },
60 { XFER_UDMA_2, 0x900bd943 },
61 { XFER_UDMA_1, 0x9008d943 },
62 { XFER_UDMA_0, 0x9008d943 },
64 { XFER_MW_DMA_2, 0xa008d943 },
65 { XFER_MW_DMA_1, 0xa010d955 },
66 { XFER_MW_DMA_0, 0xa010d9fc },
68 { XFER_PIO_4, 0xc008d963 },
69 { XFER_PIO_3, 0xc010d974 },
70 { XFER_PIO_2, 0xc010d997 },
71 { XFER_PIO_1, 0xc010d9c7 },
72 { XFER_PIO_0, 0xc018d9d9 },
76 static const struct hpt_clock hpt366_33[] = {
77 { XFER_UDMA_4, 0x90c9a731 },
78 { XFER_UDMA_3, 0x90cfa731 },
79 { XFER_UDMA_2, 0x90caa731 },
80 { XFER_UDMA_1, 0x90cba731 },
81 { XFER_UDMA_0, 0x90c8a731 },
83 { XFER_MW_DMA_2, 0xa0c8a731 },
84 { XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */
85 { XFER_MW_DMA_0, 0xa0c8a797 },
87 { XFER_PIO_4, 0xc0c8a731 },
88 { XFER_PIO_3, 0xc0c8a742 },
89 { XFER_PIO_2, 0xc0d0a753 },
90 { XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */
91 { XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */
95 static const struct hpt_clock hpt366_25[] = {
96 { XFER_UDMA_4, 0x90c98521 },
97 { XFER_UDMA_3, 0x90cf8521 },
98 { XFER_UDMA_2, 0x90cf8521 },
99 { XFER_UDMA_1, 0x90cb8521 },
100 { XFER_UDMA_0, 0x90cb8521 },
102 { XFER_MW_DMA_2, 0xa0ca8521 },
103 { XFER_MW_DMA_1, 0xa0ca8532 },
104 { XFER_MW_DMA_0, 0xa0ca8575 },
106 { XFER_PIO_4, 0xc0ca8521 },
107 { XFER_PIO_3, 0xc0ca8532 },
108 { XFER_PIO_2, 0xc0ca8542 },
109 { XFER_PIO_1, 0xc0d08572 },
110 { XFER_PIO_0, 0xc0d08585 },
115 * hpt36x_find_mode - find the hpt36x timing
117 * @speed: transfer mode
119 * Return the 32bit register programming information for this channel
120 * that matches the speed provided.
123 static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
125 struct hpt_clock *clocks = ap->host->private_data;
127 while (clocks->xfer_mode) {
128 if (clocks->xfer_mode == speed)
129 return clocks->timing;
133 return 0xffffffffU; /* silence compiler warning */
136 static const char * const bad_ata33[] = {
137 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3",
138 "Maxtor 90845U3", "Maxtor 90650U2",
139 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5",
140 "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
141 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6",
142 "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
144 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
145 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7",
146 "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
147 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5",
148 "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
152 static const char * const bad_ata66_4[] = {
171 static const char * const bad_ata66_3[] = {
176 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr,
177 const char * const list[])
179 unsigned char model_num[ATA_ID_PROD_LEN + 1];
182 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
184 while (list[i] != NULL) {
185 if (!strcmp(list[i], model_num)) {
186 pr_warn("%s is not supported for %s\n",
196 * hpt366_filter - mode selection filter
199 * Block UDMA on devices that cause trouble with this controller.
202 static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
204 if (adev->class == ATA_DEV_ATA) {
205 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
206 mask &= ~ATA_MASK_UDMA;
207 if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
208 mask &= ~(0xF8 << ATA_SHIFT_UDMA);
209 if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
210 mask &= ~(0xF0 << ATA_SHIFT_UDMA);
211 } else if (adev->class == ATA_DEV_ATAPI)
212 mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
217 static int hpt36x_cable_detect(struct ata_port *ap)
219 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
223 * Each channel of pata_hpt366 occupies separate PCI function
224 * as the primary channel and bit1 indicates the cable type.
226 pci_read_config_byte(pdev, 0x5A, &ata66);
228 return ATA_CBL_PATA40;
229 return ATA_CBL_PATA80;
232 static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
235 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
236 u32 addr = 0x40 + 4 * adev->devno;
239 /* determine timing mask and find matching clock entry */
240 if (mode < XFER_MW_DMA_0)
242 else if (mode < XFER_UDMA_0)
247 t = hpt36x_find_mode(ap, mode);
250 * Combine new mode bits with old config bits and disable
251 * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
252 * problems handling I/O errors later.
254 pci_read_config_dword(pdev, addr, ®);
255 reg = ((reg & ~mask) | (t & mask)) & ~0xc0000000;
256 pci_write_config_dword(pdev, addr, reg);
260 * hpt366_set_piomode - PIO setup
262 * @adev: device on the interface
264 * Perform PIO mode setup.
267 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
269 hpt366_set_mode(ap, adev, adev->pio_mode);
273 * hpt366_set_dmamode - DMA timing setup
275 * @adev: Device being configured
277 * Set up the channel for MWDMA or UDMA modes. Much the same as with
278 * PIO, load the mode number and then set MWDMA or UDMA flag.
281 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
283 hpt366_set_mode(ap, adev, adev->dma_mode);
286 static struct scsi_host_template hpt36x_sht = {
287 ATA_BMDMA_SHT(DRV_NAME),
291 * Configuration for HPT366/68
294 static struct ata_port_operations hpt366_port_ops = {
295 .inherits = &ata_bmdma_port_ops,
296 .cable_detect = hpt36x_cable_detect,
297 .mode_filter = hpt366_filter,
298 .set_piomode = hpt366_set_piomode,
299 .set_dmamode = hpt366_set_dmamode,
303 * hpt36x_init_chipset - common chip setup
306 * Perform the chip setup work that must be done at both init and
310 static void hpt36x_init_chipset(struct pci_dev *dev)
314 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
315 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
316 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
317 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
319 pci_read_config_byte(dev, 0x51, &drive_fast);
320 if (drive_fast & 0x80)
321 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
325 * hpt36x_init_one - Initialise an HPT366/368
327 * @id: Entry in match table
329 * Initialise an HPT36x device. There are some interesting complications
330 * here. Firstly the chip may report 366 and be one of several variants.
331 * Secondly all the timings depend on the clock for the chip which we must
334 * This is the known chip mappings. It may be missing a couple of later
337 * Chip version PCI Rev Notes
338 * HPT366 4 (HPT366) 0 UDMA66
339 * HPT366 4 (HPT366) 1 UDMA66
340 * HPT368 4 (HPT366) 2 UDMA66
341 * HPT37x/30x 4 (HPT366) 3+ Other driver
345 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
347 static const struct ata_port_info info_hpt366 = {
348 .flags = ATA_FLAG_SLAVE_POSS,
349 .pio_mask = ATA_PIO4,
350 .mwdma_mask = ATA_MWDMA2,
351 .udma_mask = ATA_UDMA4,
352 .port_ops = &hpt366_port_ops
354 const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
360 rc = pcim_enable_device(dev);
364 /* May be a later chip in disguise. Check */
365 /* Newer chips are not in the HPT36x driver. Ignore them */
366 if (dev->revision > 2)
369 hpt36x_init_chipset(dev);
371 pci_read_config_dword(dev, 0x40, ®1);
373 /* PCI clocking determines the ATA timing values to use */
374 /* info_hpt366 is safe against re-entry so we can scribble on it */
375 switch ((reg1 & 0x700) >> 8) {
386 /* Now kick off ATA set up */
387 return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, hpriv, 0);
390 #ifdef CONFIG_PM_SLEEP
391 static int hpt36x_reinit_one(struct pci_dev *dev)
393 struct ata_host *host = pci_get_drvdata(dev);
396 rc = ata_pci_device_do_resume(dev);
399 hpt36x_init_chipset(dev);
400 ata_host_resume(host);
405 static const struct pci_device_id hpt36x[] = {
406 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
410 static struct pci_driver hpt36x_pci_driver = {
413 .probe = hpt36x_init_one,
414 .remove = ata_pci_remove_one,
415 #ifdef CONFIG_PM_SLEEP
416 .suspend = ata_pci_device_suspend,
417 .resume = hpt36x_reinit_one,
421 module_pci_driver(hpt36x_pci_driver);
423 MODULE_AUTHOR("Alan Cox");
424 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
425 MODULE_LICENSE("GPL");
426 MODULE_DEVICE_TABLE(pci, hpt36x);
427 MODULE_VERSION(DRV_VERSION);