2 * pata_artop.c - ARTOP ATA controller driver
5 * (C) 2007,2011 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 * Investigate no_dsc on 850R
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 <linux/device.h>
25 #include <scsi/scsi_host.h>
26 #include <linux/libata.h>
27 #include <linux/ata.h>
29 #define DRV_NAME "pata_artop"
30 #define DRV_VERSION "0.4.6"
33 * The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
34 * get PCI bus speed functionality we leave this as 0. Its a variable
35 * for when we get the functionality and also for folks wanting to
42 * artop62x0_pre_reset - probe begin
44 * @deadline: deadline jiffies for the operation
46 * Nothing complicated needed here.
49 static int artop62x0_pre_reset(struct ata_link *link, unsigned long deadline)
51 static const struct pci_bits artop_enable_bits[] = {
52 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
53 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
56 struct ata_port *ap = link->ap;
57 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
59 /* Odd numbered device ids are the units with enable bits. */
60 if ((pdev->device & 1) &&
61 !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
64 return ata_sff_prereset(link, deadline);
68 * artop6260_cable_detect - identify cable type
71 * Identify the cable type for the ARTOP interface in question
74 static int artop6260_cable_detect(struct ata_port *ap)
76 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
78 pci_read_config_byte(pdev, 0x49, &tmp);
79 if (tmp & (1 << ap->port_no))
80 return ATA_CBL_PATA40;
81 return ATA_CBL_PATA80;
85 * artop6210_load_piomode - Load a set of PATA PIO timings
86 * @ap: Port whose timings we are configuring
90 * Set PIO mode for device, in host controller PCI config space. This
91 * is used both to set PIO timings in PIO mode and also to set the
92 * matching PIO clocking for UDMA, as well as the MWDMA timings.
95 * None (inherited from caller).
98 static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
100 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
101 int dn = adev->devno + 2 * ap->port_no;
102 const u16 timing[2][5] = {
103 { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
104 { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
107 /* Load the PIO timing active/recovery bits */
108 pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
112 * artop6210_set_piomode - Initialize host controller PATA PIO timings
113 * @ap: Port whose timings we are configuring
114 * @adev: Device we are configuring
116 * Set PIO mode for device, in host controller PCI config space. For
117 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
118 * the event UDMA is used the later call to set_dmamode will set the
122 * None (inherited from caller).
125 static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
127 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
128 int dn = adev->devno + 2 * ap->port_no;
131 artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
133 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
134 pci_read_config_byte(pdev, 0x54, &ultra);
135 ultra &= ~(3 << (2 * dn));
136 pci_write_config_byte(pdev, 0x54, ultra);
140 * artop6260_load_piomode - Initialize host controller PATA PIO timings
141 * @ap: Port whose timings we are configuring
142 * @adev: Device we are configuring
145 * Set PIO mode for device, in host controller PCI config space. The
146 * ARTOP6260 and relatives store the timing data differently.
149 * None (inherited from caller).
152 static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
154 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
155 int dn = adev->devno + 2 * ap->port_no;
156 const u8 timing[2][5] = {
157 { 0x00, 0x0A, 0x08, 0x33, 0x31 },
158 { 0x70, 0x7A, 0x78, 0x43, 0x41 }
161 /* Load the PIO timing active/recovery bits */
162 pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
166 * artop6260_set_piomode - Initialize host controller PATA PIO timings
167 * @ap: Port whose timings we are configuring
168 * @adev: Device we are configuring
170 * Set PIO mode for device, in host controller PCI config space. For
171 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
172 * the event UDMA is used the later call to set_dmamode will set the
176 * None (inherited from caller).
179 static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
181 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
184 artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
186 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
187 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
188 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
189 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
193 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
194 * @ap: Port whose timings we are configuring
195 * @adev: Device whose timings we are configuring
197 * Set DMA mode for device, in host controller PCI config space.
200 * None (inherited from caller).
203 static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
206 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
207 int dn = adev->devno + 2 * ap->port_no;
210 if (adev->dma_mode == XFER_MW_DMA_0)
215 /* Load the PIO timing active/recovery bits */
216 artop6210_load_piomode(ap, adev, pio);
218 pci_read_config_byte(pdev, 0x54, &ultra);
219 ultra &= ~(3 << (2 * dn));
221 /* Add ultra DMA bits if in UDMA mode */
222 if (adev->dma_mode >= XFER_UDMA_0) {
223 u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
226 ultra |= (mode << (2 * dn));
228 pci_write_config_byte(pdev, 0x54, ultra);
232 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
233 * @ap: Port whose timings we are configuring
234 * @adev: Device we are configuring
236 * Set DMA mode for device, in host controller PCI config space. The
237 * ARTOP6260 and relatives store the timing data differently.
240 * None (inherited from caller).
243 static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
245 unsigned int pio = adev->pio_mode - XFER_PIO_0;
246 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
249 if (adev->dma_mode == XFER_MW_DMA_0)
254 /* Load the PIO timing active/recovery bits */
255 artop6260_load_piomode(ap, adev, pio);
257 /* Add ultra DMA bits if in UDMA mode */
258 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
259 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
260 if (adev->dma_mode >= XFER_UDMA_0) {
261 u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
264 ultra |= (mode << (4 * adev->devno));
266 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
270 * artop_6210_qc_defer - implement serialization
273 * Issue commands per host on this chip.
276 static int artop6210_qc_defer(struct ata_queued_cmd *qc)
278 struct ata_host *host = qc->ap->host;
279 struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];
282 /* First apply the usual rules */
283 rc = ata_std_qc_defer(qc);
287 /* Now apply serialization rules. Only allow a command if the
288 other channel state machine is idle */
289 if (alt && alt->qc_active)
290 return ATA_DEFER_PORT;
294 static struct scsi_host_template artop_sht = {
295 ATA_BMDMA_SHT(DRV_NAME),
298 static struct ata_port_operations artop6210_ops = {
299 .inherits = &ata_bmdma_port_ops,
300 .cable_detect = ata_cable_40wire,
301 .set_piomode = artop6210_set_piomode,
302 .set_dmamode = artop6210_set_dmamode,
303 .prereset = artop62x0_pre_reset,
304 .qc_defer = artop6210_qc_defer,
307 static struct ata_port_operations artop6260_ops = {
308 .inherits = &ata_bmdma_port_ops,
309 .cable_detect = artop6260_cable_detect,
310 .set_piomode = artop6260_set_piomode,
311 .set_dmamode = artop6260_set_dmamode,
312 .prereset = artop62x0_pre_reset,
315 static void atp8xx_fixup(struct pci_dev *pdev)
317 if (pdev->device == 0x0005)
318 /* BIOS may have left us in UDMA, clear it before libata probe */
319 pci_write_config_byte(pdev, 0x54, 0);
320 else if (pdev->device == 0x0008 || pdev->device == 0x0009) {
323 /* Mac systems come up with some registers not set as we
326 /* Clear reset & test bits */
327 pci_read_config_byte(pdev, 0x49, ®);
328 pci_write_config_byte(pdev, 0x49, reg & ~0x30);
330 /* PCI latency must be > 0x80 for burst mode, tweak it
333 pci_read_config_byte(pdev, PCI_LATENCY_TIMER, ®);
335 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);
337 /* Enable IRQ output and burst mode */
338 pci_read_config_byte(pdev, 0x4a, ®);
339 pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);
344 * artop_init_one - Register ARTOP ATA PCI device with kernel services
345 * @pdev: PCI device to register
346 * @ent: Entry in artop_pci_tbl matching with @pdev
348 * Called from kernel PCI layer.
351 * Inherited from PCI layer (may sleep).
354 * Zero on success, or -ERRNO value.
357 static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
359 static const struct ata_port_info info_6210 = {
360 .flags = ATA_FLAG_SLAVE_POSS,
361 .pio_mask = ATA_PIO4,
362 .mwdma_mask = ATA_MWDMA2,
363 .udma_mask = ATA_UDMA2,
364 .port_ops = &artop6210_ops,
366 static const struct ata_port_info info_626x = {
367 .flags = ATA_FLAG_SLAVE_POSS,
368 .pio_mask = ATA_PIO4,
369 .mwdma_mask = ATA_MWDMA2,
370 .udma_mask = ATA_UDMA4,
371 .port_ops = &artop6260_ops,
373 static const struct ata_port_info info_628x = {
374 .flags = ATA_FLAG_SLAVE_POSS,
375 .pio_mask = ATA_PIO4,
376 .mwdma_mask = ATA_MWDMA2,
377 .udma_mask = ATA_UDMA5,
378 .port_ops = &artop6260_ops,
380 static const struct ata_port_info info_628x_fast = {
381 .flags = ATA_FLAG_SLAVE_POSS,
382 .pio_mask = ATA_PIO4,
383 .mwdma_mask = ATA_MWDMA2,
384 .udma_mask = ATA_UDMA6,
385 .port_ops = &artop6260_ops,
387 const struct ata_port_info *ppi[] = { NULL, NULL };
390 ata_print_version_once(&pdev->dev, DRV_VERSION);
392 rc = pcim_enable_device(pdev);
396 if (id->driver_data == 0) /* 6210 variant */
398 else if (id->driver_data == 1) /* 6260 */
400 else if (id->driver_data == 2) { /* 6280 or 6280 + fast */
401 unsigned long io = pci_resource_start(pdev, 4);
405 ppi[0] = &info_628x_fast;
408 BUG_ON(ppi[0] == NULL);
412 return ata_pci_bmdma_init_one(pdev, ppi, &artop_sht, NULL, 0);
415 static const struct pci_device_id artop_pci_tbl[] = {
416 { PCI_VDEVICE(ARTOP, 0x0005), 0 },
417 { PCI_VDEVICE(ARTOP, 0x0006), 1 },
418 { PCI_VDEVICE(ARTOP, 0x0007), 1 },
419 { PCI_VDEVICE(ARTOP, 0x0008), 2 },
420 { PCI_VDEVICE(ARTOP, 0x0009), 2 },
422 { } /* terminate list */
425 #ifdef CONFIG_PM_SLEEP
426 static int atp8xx_reinit_one(struct pci_dev *pdev)
428 struct ata_host *host = pci_get_drvdata(pdev);
431 rc = ata_pci_device_do_resume(pdev);
437 ata_host_resume(host);
442 static struct pci_driver artop_pci_driver = {
444 .id_table = artop_pci_tbl,
445 .probe = artop_init_one,
446 .remove = ata_pci_remove_one,
447 #ifdef CONFIG_PM_SLEEP
448 .suspend = ata_pci_device_suspend,
449 .resume = atp8xx_reinit_one,
453 module_pci_driver(artop_pci_driver);
455 MODULE_AUTHOR("Alan Cox, Bartlomiej Zolnierkiewicz");
456 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
457 MODULE_LICENSE("GPL");
458 MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
459 MODULE_VERSION(DRV_VERSION);