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/blkdev.h>
23 #include <linux/delay.h>
24 #include <scsi/scsi_host.h>
25 #include <linux/libata.h>
27 #define DRV_NAME "pata_hpt366"
28 #define DRV_VERSION "0.6.11"
35 /* key for bus clock timings
37 * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA.
39 * 4:7 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA.
41 * 8:11 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file
43 * 12:15 cmd_low_time. Active time of DIOW_/DIOR_ during task file
45 * 16:18 udma_cycle_time. Clock cycles for UDMA xfer?
46 * 19:21 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer.
47 * 22:24 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file
51 * 30 PIO_MST enable. If set, the chip is in bus master mode during
56 static const struct hpt_clock hpt366_40[] = {
57 { XFER_UDMA_4, 0x900fd943 },
58 { XFER_UDMA_3, 0x900ad943 },
59 { XFER_UDMA_2, 0x900bd943 },
60 { XFER_UDMA_1, 0x9008d943 },
61 { XFER_UDMA_0, 0x9008d943 },
63 { XFER_MW_DMA_2, 0xa008d943 },
64 { XFER_MW_DMA_1, 0xa010d955 },
65 { XFER_MW_DMA_0, 0xa010d9fc },
67 { XFER_PIO_4, 0xc008d963 },
68 { XFER_PIO_3, 0xc010d974 },
69 { XFER_PIO_2, 0xc010d997 },
70 { XFER_PIO_1, 0xc010d9c7 },
71 { XFER_PIO_0, 0xc018d9d9 },
75 static const struct hpt_clock hpt366_33[] = {
76 { XFER_UDMA_4, 0x90c9a731 },
77 { XFER_UDMA_3, 0x90cfa731 },
78 { XFER_UDMA_2, 0x90caa731 },
79 { XFER_UDMA_1, 0x90cba731 },
80 { XFER_UDMA_0, 0x90c8a731 },
82 { XFER_MW_DMA_2, 0xa0c8a731 },
83 { XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */
84 { XFER_MW_DMA_0, 0xa0c8a797 },
86 { XFER_PIO_4, 0xc0c8a731 },
87 { XFER_PIO_3, 0xc0c8a742 },
88 { XFER_PIO_2, 0xc0d0a753 },
89 { XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */
90 { XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */
94 static const struct hpt_clock hpt366_25[] = {
95 { XFER_UDMA_4, 0x90c98521 },
96 { XFER_UDMA_3, 0x90cf8521 },
97 { XFER_UDMA_2, 0x90cf8521 },
98 { XFER_UDMA_1, 0x90cb8521 },
99 { XFER_UDMA_0, 0x90cb8521 },
101 { XFER_MW_DMA_2, 0xa0ca8521 },
102 { XFER_MW_DMA_1, 0xa0ca8532 },
103 { XFER_MW_DMA_0, 0xa0ca8575 },
105 { XFER_PIO_4, 0xc0ca8521 },
106 { XFER_PIO_3, 0xc0ca8532 },
107 { XFER_PIO_2, 0xc0ca8542 },
108 { XFER_PIO_1, 0xc0d08572 },
109 { XFER_PIO_0, 0xc0d08585 },
114 * hpt36x_find_mode - find the hpt36x timing
116 * @speed: transfer mode
118 * Return the 32bit register programming information for this channel
119 * that matches the speed provided.
122 static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
124 struct hpt_clock *clocks = ap->host->private_data;
126 while (clocks->xfer_mode) {
127 if (clocks->xfer_mode == speed)
128 return clocks->timing;
132 return 0xffffffffU; /* silence compiler warning */
135 static const char * const bad_ata33[] = {
136 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3",
137 "Maxtor 90845U3", "Maxtor 90650U2",
138 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5",
139 "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
140 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6",
141 "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
143 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
144 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7",
145 "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
146 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5",
147 "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
151 static const char * const bad_ata66_4[] = {
170 static const char * const bad_ata66_3[] = {
175 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr,
176 const char * const list[])
178 unsigned char model_num[ATA_ID_PROD_LEN + 1];
181 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
183 i = match_string(list, -1, model_num);
185 pr_warn("%s is not supported for %s\n", modestr, list[i]);
192 * hpt366_filter - mode selection filter
195 * Block UDMA on devices that cause trouble with this controller.
198 static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
200 if (adev->class == ATA_DEV_ATA) {
201 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
202 mask &= ~ATA_MASK_UDMA;
203 if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
204 mask &= ~(0xF8 << ATA_SHIFT_UDMA);
205 if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
206 mask &= ~(0xF0 << ATA_SHIFT_UDMA);
207 } else if (adev->class == ATA_DEV_ATAPI)
208 mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
213 static int hpt36x_cable_detect(struct ata_port *ap)
215 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
219 * Each channel of pata_hpt366 occupies separate PCI function
220 * as the primary channel and bit1 indicates the cable type.
222 pci_read_config_byte(pdev, 0x5A, &ata66);
224 return ATA_CBL_PATA40;
225 return ATA_CBL_PATA80;
228 static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
231 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
232 u32 addr = 0x40 + 4 * adev->devno;
235 /* determine timing mask and find matching clock entry */
236 if (mode < XFER_MW_DMA_0)
238 else if (mode < XFER_UDMA_0)
243 t = hpt36x_find_mode(ap, mode);
246 * Combine new mode bits with old config bits and disable
247 * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
248 * problems handling I/O errors later.
250 pci_read_config_dword(pdev, addr, ®);
251 reg = ((reg & ~mask) | (t & mask)) & ~0xc0000000;
252 pci_write_config_dword(pdev, addr, reg);
256 * hpt366_set_piomode - PIO setup
258 * @adev: device on the interface
260 * Perform PIO mode setup.
263 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
265 hpt366_set_mode(ap, adev, adev->pio_mode);
269 * hpt366_set_dmamode - DMA timing setup
271 * @adev: Device being configured
273 * Set up the channel for MWDMA or UDMA modes. Much the same as with
274 * PIO, load the mode number and then set MWDMA or UDMA flag.
277 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
279 hpt366_set_mode(ap, adev, adev->dma_mode);
282 static struct scsi_host_template hpt36x_sht = {
283 ATA_BMDMA_SHT(DRV_NAME),
287 * Configuration for HPT366/68
290 static struct ata_port_operations hpt366_port_ops = {
291 .inherits = &ata_bmdma_port_ops,
292 .cable_detect = hpt36x_cable_detect,
293 .mode_filter = hpt366_filter,
294 .set_piomode = hpt366_set_piomode,
295 .set_dmamode = hpt366_set_dmamode,
299 * hpt36x_init_chipset - common chip setup
302 * Perform the chip setup work that must be done at both init and
306 static void hpt36x_init_chipset(struct pci_dev *dev)
310 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
311 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
312 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
313 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
315 pci_read_config_byte(dev, 0x51, &drive_fast);
316 if (drive_fast & 0x80)
317 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
321 * hpt36x_init_one - Initialise an HPT366/368
323 * @id: Entry in match table
325 * Initialise an HPT36x device. There are some interesting complications
326 * here. Firstly the chip may report 366 and be one of several variants.
327 * Secondly all the timings depend on the clock for the chip which we must
330 * This is the known chip mappings. It may be missing a couple of later
333 * Chip version PCI Rev Notes
334 * HPT366 4 (HPT366) 0 UDMA66
335 * HPT366 4 (HPT366) 1 UDMA66
336 * HPT368 4 (HPT366) 2 UDMA66
337 * HPT37x/30x 4 (HPT366) 3+ Other driver
341 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
343 static const struct ata_port_info info_hpt366 = {
344 .flags = ATA_FLAG_SLAVE_POSS,
345 .pio_mask = ATA_PIO4,
346 .mwdma_mask = ATA_MWDMA2,
347 .udma_mask = ATA_UDMA4,
348 .port_ops = &hpt366_port_ops
350 const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
352 const void *hpriv = NULL;
356 rc = pcim_enable_device(dev);
360 /* May be a later chip in disguise. Check */
361 /* Newer chips are not in the HPT36x driver. Ignore them */
362 if (dev->revision > 2)
365 hpt36x_init_chipset(dev);
367 pci_read_config_dword(dev, 0x40, ®1);
369 /* PCI clocking determines the ATA timing values to use */
370 /* info_hpt366 is safe against re-entry so we can scribble on it */
371 switch ((reg1 & 0x700) >> 8) {
382 /* Now kick off ATA set up */
383 return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, (void *)hpriv, 0);
386 #ifdef CONFIG_PM_SLEEP
387 static int hpt36x_reinit_one(struct pci_dev *dev)
389 struct ata_host *host = pci_get_drvdata(dev);
392 rc = ata_pci_device_do_resume(dev);
395 hpt36x_init_chipset(dev);
396 ata_host_resume(host);
401 static const struct pci_device_id hpt36x[] = {
402 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
406 static struct pci_driver hpt36x_pci_driver = {
409 .probe = hpt36x_init_one,
410 .remove = ata_pci_remove_one,
411 #ifdef CONFIG_PM_SLEEP
412 .suspend = ata_pci_device_suspend,
413 .resume = hpt36x_reinit_one,
417 module_pci_driver(hpt36x_pci_driver);
419 MODULE_AUTHOR("Alan Cox");
420 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
421 MODULE_LICENSE("GPL");
422 MODULE_DEVICE_TABLE(pci, hpt36x);
423 MODULE_VERSION(DRV_VERSION);