2 * pata_artop.c - ARTOP ATA controller driver
4 * (C) 2006 Red Hat <alan@redhat.com>
5 * (C) 2007 Bartlomiej Zolnierkiewicz
7 * Based in part on drivers/ide/pci/aec62xx.c
8 * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
9 * 865/865R fixes for Macintosh card version from a patch to the old
10 * driver by Thibaut VARENE <varenet@parisc-linux.org>
11 * When setting the PCI latency we must set 0x80 or higher for burst
12 * performance Alessandro Zummo <alessandro.zummo@towertech.it>
15 * 850 serialization once the core supports it
16 * Investigate no_dsc on 850R
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 <linux/device.h>
27 #include <scsi/scsi_host.h>
28 #include <linux/libata.h>
29 #include <linux/ata.h>
31 #define DRV_NAME "pata_artop"
32 #define DRV_VERSION "0.4.4"
35 * The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
36 * get PCI bus speed functionality we leave this as 0. Its a variable
37 * for when we get the functionality and also for folks wanting to
43 static int artop6210_pre_reset(struct ata_link *link, unsigned long deadline)
45 struct ata_port *ap = link->ap;
46 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
47 const struct pci_bits artop_enable_bits[] = {
48 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
49 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
52 if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
55 return ata_sff_prereset(link, deadline);
59 * artop6260_pre_reset - check for 40/80 pin
61 * @deadline: deadline jiffies for the operation
63 * The ARTOP hardware reports the cable detect bits in register 0x49.
64 * Nothing complicated needed here.
67 static int artop6260_pre_reset(struct ata_link *link, unsigned long deadline)
69 static const struct pci_bits artop_enable_bits[] = {
70 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
71 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
74 struct ata_port *ap = link->ap;
75 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
77 /* Odd numbered device ids are the units with enable bits (the -R cards) */
78 if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
81 return ata_sff_prereset(link, deadline);
85 * artop6260_cable_detect - identify cable type
88 * Identify the cable type for the ARTOP interface in question
91 static int artop6260_cable_detect(struct ata_port *ap)
93 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
95 pci_read_config_byte(pdev, 0x49, &tmp);
96 if (tmp & (1 << ap->port_no))
97 return ATA_CBL_PATA40;
98 return ATA_CBL_PATA80;
102 * artop6210_load_piomode - Load a set of PATA PIO timings
103 * @ap: Port whose timings we are configuring
107 * Set PIO mode for device, in host controller PCI config space. This
108 * is used both to set PIO timings in PIO mode and also to set the
109 * matching PIO clocking for UDMA, as well as the MWDMA timings.
112 * None (inherited from caller).
115 static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
117 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
118 int dn = adev->devno + 2 * ap->port_no;
119 const u16 timing[2][5] = {
120 { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
121 { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
124 /* Load the PIO timing active/recovery bits */
125 pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
129 * artop6210_set_piomode - Initialize host controller PATA PIO timings
130 * @ap: Port whose timings we are configuring
131 * @adev: Device we are configuring
133 * Set PIO mode for device, in host controller PCI config space. For
134 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
135 * the event UDMA is used the later call to set_dmamode will set the
139 * None (inherited from caller).
142 static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
144 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
145 int dn = adev->devno + 2 * ap->port_no;
148 artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
150 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
151 pci_read_config_byte(pdev, 0x54, &ultra);
152 ultra &= ~(3 << (2 * dn));
153 pci_write_config_byte(pdev, 0x54, ultra);
157 * artop6260_load_piomode - Initialize host controller PATA PIO timings
158 * @ap: Port whose timings we are configuring
159 * @adev: Device we are configuring
162 * Set PIO mode for device, in host controller PCI config space. The
163 * ARTOP6260 and relatives store the timing data differently.
166 * None (inherited from caller).
169 static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
171 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
172 int dn = adev->devno + 2 * ap->port_no;
173 const u8 timing[2][5] = {
174 { 0x00, 0x0A, 0x08, 0x33, 0x31 },
175 { 0x70, 0x7A, 0x78, 0x43, 0x41 }
178 /* Load the PIO timing active/recovery bits */
179 pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
183 * artop6260_set_piomode - Initialize host controller PATA PIO timings
184 * @ap: Port whose timings we are configuring
185 * @adev: Device we are configuring
187 * Set PIO mode for device, in host controller PCI config space. For
188 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
189 * the event UDMA is used the later call to set_dmamode will set the
193 * None (inherited from caller).
196 static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
198 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
201 artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
203 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
204 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
205 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
206 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
210 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
211 * @ap: Port whose timings we are configuring
212 * @adev: Device whose timings we are configuring
214 * Set DMA mode for device, in host controller PCI config space.
217 * None (inherited from caller).
220 static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
223 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
224 int dn = adev->devno + 2 * ap->port_no;
227 if (adev->dma_mode == XFER_MW_DMA_0)
232 /* Load the PIO timing active/recovery bits */
233 artop6210_load_piomode(ap, adev, pio);
235 pci_read_config_byte(pdev, 0x54, &ultra);
236 ultra &= ~(3 << (2 * dn));
238 /* Add ultra DMA bits if in UDMA mode */
239 if (adev->dma_mode >= XFER_UDMA_0) {
240 u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
243 ultra |= (mode << (2 * dn));
245 pci_write_config_byte(pdev, 0x54, ultra);
249 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
250 * @ap: Port whose timings we are configuring
251 * @adev: Device we are configuring
253 * Set DMA mode for device, in host controller PCI config space. The
254 * ARTOP6260 and relatives store the timing data differently.
257 * None (inherited from caller).
260 static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
262 unsigned int pio = adev->pio_mode - XFER_PIO_0;
263 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
266 if (adev->dma_mode == XFER_MW_DMA_0)
271 /* Load the PIO timing active/recovery bits */
272 artop6260_load_piomode(ap, adev, pio);
274 /* Add ultra DMA bits if in UDMA mode */
275 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
276 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
277 if (adev->dma_mode >= XFER_UDMA_0) {
278 u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
281 ultra |= (mode << (4 * adev->devno));
283 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
286 static struct scsi_host_template artop_sht = {
287 ATA_BMDMA_SHT(DRV_NAME),
290 static struct ata_port_operations artop6210_ops = {
291 .inherits = &ata_bmdma_port_ops,
292 .cable_detect = ata_cable_40wire,
293 .set_piomode = artop6210_set_piomode,
294 .set_dmamode = artop6210_set_dmamode,
295 .prereset = artop6210_pre_reset,
298 static struct ata_port_operations artop6260_ops = {
299 .inherits = &ata_bmdma_port_ops,
300 .cable_detect = artop6260_cable_detect,
301 .set_piomode = artop6260_set_piomode,
302 .set_dmamode = artop6260_set_dmamode,
303 .prereset = artop6260_pre_reset,
308 * artop_init_one - Register ARTOP ATA PCI device with kernel services
309 * @pdev: PCI device to register
310 * @ent: Entry in artop_pci_tbl matching with @pdev
312 * Called from kernel PCI layer.
315 * Inherited from PCI layer (may sleep).
318 * Zero on success, or -ERRNO value.
321 static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
323 static int printed_version;
324 static const struct ata_port_info info_6210 = {
325 .flags = ATA_FLAG_SLAVE_POSS,
326 .pio_mask = 0x1f, /* pio0-4 */
327 .mwdma_mask = 0x07, /* mwdma0-2 */
328 .udma_mask = ATA_UDMA2,
329 .port_ops = &artop6210_ops,
331 static const struct ata_port_info info_626x = {
332 .flags = ATA_FLAG_SLAVE_POSS,
333 .pio_mask = 0x1f, /* pio0-4 */
334 .mwdma_mask = 0x07, /* mwdma0-2 */
335 .udma_mask = ATA_UDMA4,
336 .port_ops = &artop6260_ops,
338 static const struct ata_port_info info_628x = {
339 .flags = ATA_FLAG_SLAVE_POSS,
340 .pio_mask = 0x1f, /* pio0-4 */
341 .mwdma_mask = 0x07, /* mwdma0-2 */
342 .udma_mask = ATA_UDMA5,
343 .port_ops = &artop6260_ops,
345 static const struct ata_port_info info_628x_fast = {
346 .flags = ATA_FLAG_SLAVE_POSS,
347 .pio_mask = 0x1f, /* pio0-4 */
348 .mwdma_mask = 0x07, /* mwdma0-2 */
349 .udma_mask = ATA_UDMA6,
350 .port_ops = &artop6260_ops,
352 const struct ata_port_info *ppi[] = { NULL, NULL };
355 if (!printed_version++)
356 dev_printk(KERN_DEBUG, &pdev->dev,
357 "version " DRV_VERSION "\n");
359 rc = pcim_enable_device(pdev);
363 if (id->driver_data == 0) { /* 6210 variant */
365 ppi[1] = &ata_dummy_port_info;
366 /* BIOS may have left us in UDMA, clear it before libata probe */
367 pci_write_config_byte(pdev, 0x54, 0);
368 /* For the moment (also lacks dsc) */
369 printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
370 printk(KERN_WARNING "Secondary ATA ports will not be activated.\n");
372 else if (id->driver_data == 1) /* 6260 */
374 else if (id->driver_data == 2) { /* 6280 or 6280 + fast */
375 unsigned long io = pci_resource_start(pdev, 4);
380 ppi[0] = &info_628x_fast;
381 /* Mac systems come up with some registers not set as we
384 /* Clear reset & test bits */
385 pci_read_config_byte(pdev, 0x49, ®);
386 pci_write_config_byte(pdev, 0x49, reg & ~ 0x30);
388 /* PCI latency must be > 0x80 for burst mode, tweak it
391 pci_read_config_byte(pdev, PCI_LATENCY_TIMER, ®);
393 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);
395 /* Enable IRQ output and burst mode */
396 pci_read_config_byte(pdev, 0x4a, ®);
397 pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);
401 BUG_ON(ppi[0] == NULL);
403 return ata_pci_sff_init_one(pdev, ppi, &artop_sht, NULL);
406 static const struct pci_device_id artop_pci_tbl[] = {
407 { PCI_VDEVICE(ARTOP, 0x0005), 0 },
408 { PCI_VDEVICE(ARTOP, 0x0006), 1 },
409 { PCI_VDEVICE(ARTOP, 0x0007), 1 },
410 { PCI_VDEVICE(ARTOP, 0x0008), 2 },
411 { PCI_VDEVICE(ARTOP, 0x0009), 2 },
413 { } /* terminate list */
416 static struct pci_driver artop_pci_driver = {
418 .id_table = artop_pci_tbl,
419 .probe = artop_init_one,
420 .remove = ata_pci_remove_one,
423 static int __init artop_init(void)
425 return pci_register_driver(&artop_pci_driver);
428 static void __exit artop_exit(void)
430 pci_unregister_driver(&artop_pci_driver);
433 module_init(artop_init);
434 module_exit(artop_exit);
436 MODULE_AUTHOR("Alan Cox");
437 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
438 MODULE_LICENSE("GPL");
439 MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
440 MODULE_VERSION(DRV_VERSION);