1 // SPDX-License-Identifier: GPL-2.0-only
3 * Libata driver for the highpoint 366 and 368 UDMA66 ATA controllers.
5 * This driver is heavily based upon:
7 * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003
10 * Portions Copyright (C) 2001 Sun Microsystems, Inc.
11 * Portions Copyright (C) 2003 Red Hat Inc
15 * Look into engine reset on timeout errors. Should not be required.
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/pci.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 i = match_string(list, -1, model_num);
186 pr_warn("%s is not supported for %s\n", modestr, list[i]);
193 * hpt366_filter - mode selection filter
195 * @mask: Current mask to manipulate and pass back
197 * Block UDMA on devices that cause trouble with this controller.
200 static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
202 if (adev->class == ATA_DEV_ATA) {
203 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
204 mask &= ~ATA_MASK_UDMA;
205 if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
206 mask &= ~(0xF8 << ATA_SHIFT_UDMA);
207 if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
208 mask &= ~(0xF0 << ATA_SHIFT_UDMA);
209 } else if (adev->class == ATA_DEV_ATAPI)
210 mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
215 static int hpt36x_cable_detect(struct ata_port *ap)
217 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
221 * Each channel of pata_hpt366 occupies separate PCI function
222 * as the primary channel and bit1 indicates the cable type.
224 pci_read_config_byte(pdev, 0x5A, &ata66);
226 return ATA_CBL_PATA40;
227 return ATA_CBL_PATA80;
230 static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
233 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
234 u32 addr = 0x40 + 4 * adev->devno;
237 /* determine timing mask and find matching clock entry */
238 if (mode < XFER_MW_DMA_0)
240 else if (mode < XFER_UDMA_0)
245 t = hpt36x_find_mode(ap, mode);
248 * Combine new mode bits with old config bits and disable
249 * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
250 * problems handling I/O errors later.
252 pci_read_config_dword(pdev, addr, ®);
253 reg = ((reg & ~mask) | (t & mask)) & ~0xc0000000;
254 pci_write_config_dword(pdev, addr, reg);
258 * hpt366_set_piomode - PIO setup
260 * @adev: device on the interface
262 * Perform PIO mode setup.
265 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
267 hpt366_set_mode(ap, adev, adev->pio_mode);
271 * hpt366_set_dmamode - DMA timing setup
273 * @adev: Device being configured
275 * Set up the channel for MWDMA or UDMA modes. Much the same as with
276 * PIO, load the mode number and then set MWDMA or UDMA flag.
279 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
281 hpt366_set_mode(ap, adev, adev->dma_mode);
284 static struct scsi_host_template hpt36x_sht = {
285 ATA_BMDMA_SHT(DRV_NAME),
289 * Configuration for HPT366/68
292 static struct ata_port_operations hpt366_port_ops = {
293 .inherits = &ata_bmdma_port_ops,
294 .cable_detect = hpt36x_cable_detect,
295 .mode_filter = hpt366_filter,
296 .set_piomode = hpt366_set_piomode,
297 .set_dmamode = hpt366_set_dmamode,
301 * hpt36x_init_chipset - common chip setup
304 * Perform the chip setup work that must be done at both init and
308 static void hpt36x_init_chipset(struct pci_dev *dev)
312 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
313 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
314 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
315 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
317 pci_read_config_byte(dev, 0x51, &drive_fast);
318 if (drive_fast & 0x80)
319 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
323 * hpt36x_init_one - Initialise an HPT366/368
325 * @id: Entry in match table
327 * Initialise an HPT36x device. There are some interesting complications
328 * here. Firstly the chip may report 366 and be one of several variants.
329 * Secondly all the timings depend on the clock for the chip which we must
332 * This is the known chip mappings. It may be missing a couple of later
335 * Chip version PCI Rev Notes
336 * HPT366 4 (HPT366) 0 UDMA66
337 * HPT366 4 (HPT366) 1 UDMA66
338 * HPT368 4 (HPT366) 2 UDMA66
339 * HPT37x/30x 4 (HPT366) 3+ Other driver
343 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
345 static const struct ata_port_info info_hpt366 = {
346 .flags = ATA_FLAG_SLAVE_POSS,
347 .pio_mask = ATA_PIO4,
348 .mwdma_mask = ATA_MWDMA2,
349 .udma_mask = ATA_UDMA4,
350 .port_ops = &hpt366_port_ops
352 const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
354 const void *hpriv = NULL;
358 rc = pcim_enable_device(dev);
362 /* May be a later chip in disguise. Check */
363 /* Newer chips are not in the HPT36x driver. Ignore them */
364 if (dev->revision > 2)
367 hpt36x_init_chipset(dev);
369 pci_read_config_dword(dev, 0x40, ®1);
371 /* PCI clocking determines the ATA timing values to use */
372 /* info_hpt366 is safe against re-entry so we can scribble on it */
373 switch ((reg1 & 0xf00) >> 8) {
384 /* Now kick off ATA set up */
385 return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, (void *)hpriv, 0);
388 #ifdef CONFIG_PM_SLEEP
389 static int hpt36x_reinit_one(struct pci_dev *dev)
391 struct ata_host *host = pci_get_drvdata(dev);
394 rc = ata_pci_device_do_resume(dev);
397 hpt36x_init_chipset(dev);
398 ata_host_resume(host);
403 static const struct pci_device_id hpt36x[] = {
404 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
408 static struct pci_driver hpt36x_pci_driver = {
411 .probe = hpt36x_init_one,
412 .remove = ata_pci_remove_one,
413 #ifdef CONFIG_PM_SLEEP
414 .suspend = ata_pci_device_suspend,
415 .resume = hpt36x_reinit_one,
419 module_pci_driver(hpt36x_pci_driver);
421 MODULE_AUTHOR("Alan Cox");
422 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
423 MODULE_LICENSE("GPL");
424 MODULE_DEVICE_TABLE(pci, hpt36x);
425 MODULE_VERSION(DRV_VERSION);