blob: dadfc358ba1ce0912ba3883769da0bf9f63dfd2c [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
Jeff Garzikfb9f8902007-03-02 18:17:22 -05002 * pata_cmd64x.c - CMD64x PATA for new ATA layer
Jeff Garzik669a5db2006-08-29 18:12:40 -04003 * (C) 2005 Red Hat Inc
Alan Coxab771632008-10-27 15:09:10 +00004 * Alan Cox <alan@lxorguk.ukuu.org.uk>
Jeff Garzik669a5db2006-08-29 18:12:40 -04005 *
6 * Based upon
7 * linux/drivers/ide/pci/cmd64x.c Version 1.30 Sept 10, 2002
8 *
9 * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
10 * Note, this driver is not used at all on other systems because
11 * there the "BIOS" has done all of the following already.
12 * Due to massive hardware bugs, UltraDMA is only supported
13 * on the 646U2 and not on the 646U.
14 *
15 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
16 * Copyright (C) 1998 David S. Miller (davem@redhat.com)
17 *
18 * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
19 *
20 * TODO
21 * Testing work
22 */
Jeff Garzik85cd7252006-08-31 00:03:49 -040023
Jeff Garzik669a5db2006-08-29 18:12:40 -040024#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/pci.h>
27#include <linux/init.h>
28#include <linux/blkdev.h>
29#include <linux/delay.h>
30#include <scsi/scsi_host.h>
31#include <linux/libata.h>
32
33#define DRV_NAME "pata_cmd64x"
Alan Coxd4374432009-11-30 13:22:54 +000034#define DRV_VERSION "0.3.1"
Jeff Garzik669a5db2006-08-29 18:12:40 -040035
36/*
37 * CMD64x specific registers definition.
38 */
Jeff Garzik85cd7252006-08-31 00:03:49 -040039
Jeff Garzik669a5db2006-08-29 18:12:40 -040040enum {
41 CFR = 0x50,
42 CFR_INTR_CH0 = 0x02,
43 CNTRL = 0x51,
44 CNTRL_DIS_RA0 = 0x40,
45 CNTRL_DIS_RA1 = 0x80,
46 CNTRL_ENA_2ND = 0x08,
47 CMDTIM = 0x52,
48 ARTTIM0 = 0x53,
49 DRWTIM0 = 0x54,
50 ARTTIM1 = 0x55,
51 DRWTIM1 = 0x56,
52 ARTTIM23 = 0x57,
53 ARTTIM23_DIS_RA2 = 0x04,
54 ARTTIM23_DIS_RA3 = 0x08,
55 ARTTIM23_INTR_CH1 = 0x10,
56 ARTTIM2 = 0x57,
57 ARTTIM3 = 0x57,
58 DRWTIM23 = 0x58,
59 DRWTIM2 = 0x58,
60 BRST = 0x59,
61 DRWTIM3 = 0x5b,
62 BMIDECR0 = 0x70,
63 MRDMODE = 0x71,
64 MRDMODE_INTR_CH0 = 0x04,
65 MRDMODE_INTR_CH1 = 0x08,
66 MRDMODE_BLK_CH0 = 0x10,
67 MRDMODE_BLK_CH1 = 0x20,
68 BMIDESR0 = 0x72,
69 UDIDETCR0 = 0x73,
70 DTPR0 = 0x74,
71 BMIDECR1 = 0x78,
72 BMIDECSR = 0x79,
73 BMIDESR1 = 0x7A,
74 UDIDETCR1 = 0x7B,
75 DTPR1 = 0x7C
76};
77
Jeff Garzika73984a2007-03-09 08:37:46 -050078static int cmd648_cable_detect(struct ata_port *ap)
Jeff Garzik669a5db2006-08-29 18:12:40 -040079{
80 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
81 u8 r;
82
83 /* Check cable detect bits */
84 pci_read_config_byte(pdev, BMIDECSR, &r);
85 if (r & (1 << ap->port_no))
Jeff Garzika73984a2007-03-09 08:37:46 -050086 return ATA_CBL_PATA80;
87 return ATA_CBL_PATA40;
Jeff Garzik669a5db2006-08-29 18:12:40 -040088}
89
90/**
Alan Cox05d1eff2007-08-10 13:59:49 -070091 * cmd64x_set_piomode - set PIO and MWDMA timing
Jeff Garzik669a5db2006-08-29 18:12:40 -040092 * @ap: ATA interface
93 * @adev: ATA device
Alan Cox05d1eff2007-08-10 13:59:49 -070094 * @mode: mode
Jeff Garzik669a5db2006-08-29 18:12:40 -040095 *
Alan Cox05d1eff2007-08-10 13:59:49 -070096 * Called to do the PIO and MWDMA mode setup.
Jeff Garzik669a5db2006-08-29 18:12:40 -040097 */
Jeff Garzik85cd7252006-08-31 00:03:49 -040098
Alan Cox05d1eff2007-08-10 13:59:49 -070099static void cmd64x_set_timing(struct ata_port *ap, struct ata_device *adev, u8 mode)
Jeff Garzik669a5db2006-08-29 18:12:40 -0400100{
101 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
102 struct ata_timing t;
103 const unsigned long T = 1000000 / 33;
104 const u8 setup_data[] = { 0x40, 0x40, 0x40, 0x80, 0x00 };
Jeff Garzik85cd7252006-08-31 00:03:49 -0400105
Jeff Garzik669a5db2006-08-29 18:12:40 -0400106 u8 reg;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400107
Jeff Garzik669a5db2006-08-29 18:12:40 -0400108 /* Port layout is not logical so use a table */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400109 const u8 arttim_port[2][2] = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400110 { ARTTIM0, ARTTIM1 },
111 { ARTTIM23, ARTTIM23 }
112 };
113 const u8 drwtim_port[2][2] = {
114 { DRWTIM0, DRWTIM1 },
115 { DRWTIM2, DRWTIM3 }
116 };
Jeff Garzik85cd7252006-08-31 00:03:49 -0400117
Jeff Garzik669a5db2006-08-29 18:12:40 -0400118 int arttim = arttim_port[ap->port_no][adev->devno];
119 int drwtim = drwtim_port[ap->port_no][adev->devno];
Jeff Garzik85cd7252006-08-31 00:03:49 -0400120
Alan Cox05d1eff2007-08-10 13:59:49 -0700121 /* ata_timing_compute is smart and will produce timings for MWDMA
122 that don't violate the drives PIO capabilities. */
123 if (ata_timing_compute(adev, mode, &t, T, 0) < 0) {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400124 printk(KERN_ERR DRV_NAME ": mode computation failed.\n");
125 return;
126 }
127 if (ap->port_no) {
128 /* Slave has shared address setup */
129 struct ata_device *pair = ata_dev_pair(adev);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400130
Jeff Garzik669a5db2006-08-29 18:12:40 -0400131 if (pair) {
132 struct ata_timing tp;
133 ata_timing_compute(pair, pair->pio_mode, &tp, T, 0);
134 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
135 }
136 }
Jeff Garzik85cd7252006-08-31 00:03:49 -0400137
Jeff Garzik669a5db2006-08-29 18:12:40 -0400138 printk(KERN_DEBUG DRV_NAME ": active %d recovery %d setup %d.\n",
139 t.active, t.recover, t.setup);
140 if (t.recover > 16) {
141 t.active += t.recover - 16;
142 t.recover = 16;
143 }
144 if (t.active > 16)
145 t.active = 16;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400146
Jeff Garzik669a5db2006-08-29 18:12:40 -0400147 /* Now convert the clocks into values we can actually stuff into
148 the chip */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400149
Jeff Garzik669a5db2006-08-29 18:12:40 -0400150 if (t.recover > 1)
151 t.recover--;
152 else
153 t.recover = 15;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400154
Jeff Garzik669a5db2006-08-29 18:12:40 -0400155 if (t.setup > 4)
156 t.setup = 0xC0;
157 else
158 t.setup = setup_data[t.setup];
Jeff Garzik85cd7252006-08-31 00:03:49 -0400159
Jeff Garzik669a5db2006-08-29 18:12:40 -0400160 t.active &= 0x0F; /* 0 = 16 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400161
Jeff Garzik669a5db2006-08-29 18:12:40 -0400162 /* Load setup timing */
163 pci_read_config_byte(pdev, arttim, &reg);
164 reg &= 0x3F;
165 reg |= t.setup;
166 pci_write_config_byte(pdev, arttim, reg);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400167
Jeff Garzik669a5db2006-08-29 18:12:40 -0400168 /* Load active/recovery */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400169 pci_write_config_byte(pdev, drwtim, (t.active << 4) | t.recover);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400170}
171
172/**
Alan Cox05d1eff2007-08-10 13:59:49 -0700173 * cmd64x_set_piomode - set initial PIO mode data
174 * @ap: ATA interface
175 * @adev: ATA device
176 *
177 * Used when configuring the devices ot set the PIO timings. All the
178 * actual work is done by the PIO/MWDMA setting helper
179 */
180
181static void cmd64x_set_piomode(struct ata_port *ap, struct ata_device *adev)
182{
183 cmd64x_set_timing(ap, adev, adev->pio_mode);
184}
185
186/**
Jeff Garzik669a5db2006-08-29 18:12:40 -0400187 * cmd64x_set_dmamode - set initial DMA mode data
188 * @ap: ATA interface
189 * @adev: ATA device
190 *
191 * Called to do the DMA mode setup.
192 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400193
Jeff Garzik669a5db2006-08-29 18:12:40 -0400194static void cmd64x_set_dmamode(struct ata_port *ap, struct ata_device *adev)
195{
196 static const u8 udma_data[] = {
Alan6a40da02007-01-24 11:49:03 +0000197 0x30, 0x20, 0x10, 0x20, 0x10, 0x00
Jeff Garzik669a5db2006-08-29 18:12:40 -0400198 };
Jeff Garzik85cd7252006-08-31 00:03:49 -0400199
Jeff Garzik669a5db2006-08-29 18:12:40 -0400200 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
201 u8 regU, regD;
202
203 int pciU = UDIDETCR0 + 8 * ap->port_no;
204 int pciD = BMIDESR0 + 8 * ap->port_no;
205 int shift = 2 * adev->devno;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400206
Jeff Garzik669a5db2006-08-29 18:12:40 -0400207 pci_read_config_byte(pdev, pciD, &regD);
208 pci_read_config_byte(pdev, pciU, &regU);
209
Alan6a40da02007-01-24 11:49:03 +0000210 /* DMA bits off */
211 regD &= ~(0x20 << adev->devno);
212 /* DMA control bits */
213 regU &= ~(0x30 << shift);
214 /* DMA timing bits */
215 regU &= ~(0x05 << adev->devno);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400216
Alan6a40da02007-01-24 11:49:03 +0000217 if (adev->dma_mode >= XFER_UDMA_0) {
Adrian Bunk24b7ce92007-10-20 01:02:48 +0200218 /* Merge the timing value */
Jeff Garzik669a5db2006-08-29 18:12:40 -0400219 regU |= udma_data[adev->dma_mode - XFER_UDMA_0] << shift;
Alan6a40da02007-01-24 11:49:03 +0000220 /* Merge the control bits */
221 regU |= 1 << adev->devno; /* UDMA on */
222 if (adev->dma_mode > 2) /* 15nS timing */
223 regU |= 4 << adev->devno;
Alan Cox05d1eff2007-08-10 13:59:49 -0700224 } else {
225 regU &= ~ (1 << adev->devno); /* UDMA off */
226 cmd64x_set_timing(ap, adev, adev->dma_mode);
227 }
Jeff Garzik669a5db2006-08-29 18:12:40 -0400228
229 regD |= 0x20 << adev->devno;
230
231 pci_write_config_byte(pdev, pciU, regU);
232 pci_write_config_byte(pdev, pciD, regD);
233}
234
235/**
236 * cmd648_dma_stop - DMA stop callback
237 * @qc: Command in progress
238 *
239 * DMA has completed.
240 */
241
242static void cmd648_bmdma_stop(struct ata_queued_cmd *qc)
243{
244 struct ata_port *ap = qc->ap;
245 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
246 u8 dma_intr;
Alan6a40da02007-01-24 11:49:03 +0000247 int dma_mask = ap->port_no ? ARTTIM23_INTR_CH1 : CFR_INTR_CH0;
248 int dma_reg = ap->port_no ? ARTTIM2 : CFR;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400249
Jeff Garzik669a5db2006-08-29 18:12:40 -0400250 ata_bmdma_stop(qc);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400251
Jeff Garzik669a5db2006-08-29 18:12:40 -0400252 pci_read_config_byte(pdev, dma_reg, &dma_intr);
253 pci_write_config_byte(pdev, dma_reg, dma_intr | dma_mask);
254}
Jeff Garzik85cd7252006-08-31 00:03:49 -0400255
Jeff Garzik669a5db2006-08-29 18:12:40 -0400256/**
Alan Coxd4374432009-11-30 13:22:54 +0000257 * cmd64x_bmdma_stop - DMA stop callback
Jeff Garzik669a5db2006-08-29 18:12:40 -0400258 * @qc: Command in progress
259 *
Alan Coxd4374432009-11-30 13:22:54 +0000260 * Track the completion of live DMA commands and clear the
261 * host->private_data DMA tracking flag as we do.
Jeff Garzik669a5db2006-08-29 18:12:40 -0400262 */
263
Alan Coxd4374432009-11-30 13:22:54 +0000264static void cmd64x_bmdma_stop(struct ata_queued_cmd *qc)
Jeff Garzik669a5db2006-08-29 18:12:40 -0400265{
Alan Coxd4374432009-11-30 13:22:54 +0000266 struct ata_port *ap = qc->ap;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400267 ata_bmdma_stop(qc);
Alan Coxd4374432009-11-30 13:22:54 +0000268 WARN_ON(ap->host->private_data != ap);
269 ap->host->private_data = NULL;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400270}
Jeff Garzik85cd7252006-08-31 00:03:49 -0400271
Alan Coxd4374432009-11-30 13:22:54 +0000272/**
273 * cmd64x_qc_defer - Defer logic for chip limits
274 * @qc: queued command
275 *
276 * Decide whether we can issue the command. Called under the host lock.
277 */
278
279static int cmd64x_qc_defer(struct ata_queued_cmd *qc)
280{
281 struct ata_host *host = qc->ap->host;
282 struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];
283 int rc;
284 int dma = 0;
285
286 /* Apply the ATA rules first */
287 rc = ata_std_qc_defer(qc);
288 if (rc)
289 return rc;
290
291 if (qc->tf.protocol == ATAPI_PROT_DMA ||
292 qc->tf.protocol == ATA_PROT_DMA)
293 dma = 1;
294
295 /* If the other port is not live then issue the command */
296 if (alt == NULL || !alt->qc_active) {
297 if (dma)
298 host->private_data = qc->ap;
299 return 0;
300 }
301 /* If there is a live DMA command then wait */
302 if (host->private_data != NULL)
303 return ATA_DEFER_PORT;
304 if (dma)
305 /* Cannot overlap our DMA command */
306 return ATA_DEFER_PORT;
307 return 0;
308}
309
310/**
311 * cmd64x_interrupt - ATA host interrupt handler
312 * @irq: irq line (unused)
313 * @dev_instance: pointer to our ata_host information structure
314 *
315 * Our interrupt handler for PCI IDE devices. Calls
316 * ata_sff_host_intr() for each port that is flagging an IRQ. We cannot
317 * use the defaults as we need to avoid touching status/altstatus during
318 * a DMA.
319 *
320 * LOCKING:
321 * Obtains host lock during operation.
322 *
323 * RETURNS:
324 * IRQ_NONE or IRQ_HANDLED.
325 */
326irqreturn_t cmd64x_interrupt(int irq, void *dev_instance)
327{
328 struct ata_host *host = dev_instance;
329 struct pci_dev *pdev = to_pci_dev(host->dev);
330 unsigned int i;
331 unsigned int handled = 0;
332 unsigned long flags;
333 static const u8 irq_reg[2] = { CFR, ARTTIM23 };
334 static const u8 irq_mask[2] = { 1 << 2, 1 << 4 };
335
336 /* TODO: make _irqsave conditional on x86 PCI IDE legacy mode */
337 spin_lock_irqsave(&host->lock, flags);
338
339 for (i = 0; i < host->n_ports; i++) {
340 struct ata_port *ap;
341 u8 reg;
342
343 pci_read_config_byte(pdev, irq_reg[i], &reg);
344 ap = host->ports[i];
345 if (ap && (reg & irq_mask[i]) &&
346 !(ap->flags & ATA_FLAG_DISABLED)) {
347 struct ata_queued_cmd *qc;
348
349 qc = ata_qc_from_tag(ap, ap->link.active_tag);
350 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)) &&
351 (qc->flags & ATA_QCFLAG_ACTIVE))
352 handled |= ata_sff_host_intr(ap, qc);
353 }
354 }
355
356 spin_unlock_irqrestore(&host->lock, flags);
357
358 return IRQ_RETVAL(handled);
359}
Jeff Garzik669a5db2006-08-29 18:12:40 -0400360static struct scsi_host_template cmd64x_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900361 ATA_BMDMA_SHT(DRV_NAME),
Jeff Garzik669a5db2006-08-29 18:12:40 -0400362};
363
Tejun Heo029cfd62008-03-25 12:22:49 +0900364static const struct ata_port_operations cmd64x_base_ops = {
365 .inherits = &ata_bmdma_port_ops,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400366 .set_piomode = cmd64x_set_piomode,
367 .set_dmamode = cmd64x_set_dmamode,
Alan Coxd4374432009-11-30 13:22:54 +0000368 .bmdma_stop = cmd64x_bmdma_stop,
369 .qc_defer = cmd64x_qc_defer,
Tejun Heo029cfd62008-03-25 12:22:49 +0900370};
Jeff Garzik669a5db2006-08-29 18:12:40 -0400371
Tejun Heo029cfd62008-03-25 12:22:49 +0900372static struct ata_port_operations cmd64x_port_ops = {
373 .inherits = &cmd64x_base_ops,
Jeff Garzika73984a2007-03-09 08:37:46 -0500374 .cable_detect = ata_cable_40wire,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400375};
Jeff Garzik669a5db2006-08-29 18:12:40 -0400376
377static struct ata_port_operations cmd646r1_port_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900378 .inherits = &cmd64x_base_ops,
Tejun Heo029cfd62008-03-25 12:22:49 +0900379 .cable_detect = ata_cable_40wire,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400380};
Jeff Garzik669a5db2006-08-29 18:12:40 -0400381
382static struct ata_port_operations cmd648_port_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900383 .inherits = &cmd64x_base_ops,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400384 .bmdma_stop = cmd648_bmdma_stop,
Tejun Heo029cfd62008-03-25 12:22:49 +0900385 .cable_detect = cmd648_cable_detect,
Alan Coxd4374432009-11-30 13:22:54 +0000386 .qc_defer = ata_std_qc_defer
Jeff Garzik85cd7252006-08-31 00:03:49 -0400387};
388
Jeff Garzik669a5db2006-08-29 18:12:40 -0400389static int cmd64x_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
390{
Tejun Heo1626aeb2007-05-04 12:43:58 +0200391 static const struct ata_port_info cmd_info[6] = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400392 { /* CMD 643 - no UDMA */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400393 .flags = ATA_FLAG_SLAVE_POSS,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100394 .pio_mask = ATA_PIO4,
395 .mwdma_mask = ATA_MWDMA2,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400396 .port_ops = &cmd64x_port_ops
397 },
398 { /* CMD 646 with broken UDMA */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400399 .flags = ATA_FLAG_SLAVE_POSS,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100400 .pio_mask = ATA_PIO4,
401 .mwdma_mask = ATA_MWDMA2,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400402 .port_ops = &cmd64x_port_ops
403 },
404 { /* CMD 646 with working UDMA */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400405 .flags = ATA_FLAG_SLAVE_POSS,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100406 .pio_mask = ATA_PIO4,
407 .mwdma_mask = ATA_MWDMA2,
Alan Coxdbf0c892007-07-26 18:43:01 +0100408 .udma_mask = ATA_UDMA2,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400409 .port_ops = &cmd64x_port_ops
410 },
411 { /* CMD 646 rev 1 */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400412 .flags = ATA_FLAG_SLAVE_POSS,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100413 .pio_mask = ATA_PIO4,
414 .mwdma_mask = ATA_MWDMA2,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400415 .port_ops = &cmd646r1_port_ops
416 },
417 { /* CMD 648 */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400418 .flags = ATA_FLAG_SLAVE_POSS,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100419 .pio_mask = ATA_PIO4,
420 .mwdma_mask = ATA_MWDMA2,
Alan Coxdbf0c892007-07-26 18:43:01 +0100421 .udma_mask = ATA_UDMA4,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400422 .port_ops = &cmd648_port_ops
423 },
424 { /* CMD 649 */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400425 .flags = ATA_FLAG_SLAVE_POSS,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100426 .pio_mask = ATA_PIO4,
427 .mwdma_mask = ATA_MWDMA2,
Alan Coxdbf0c892007-07-26 18:43:01 +0100428 .udma_mask = ATA_UDMA5,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400429 .port_ops = &cmd648_port_ops
430 }
431 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200432 const struct ata_port_info *ppi[] = { &cmd_info[id->driver_data], NULL };
Jeff Garzik669a5db2006-08-29 18:12:40 -0400433 u8 mrdmode;
Tejun Heof08048e2008-03-25 12:22:47 +0900434 int rc;
Alan Coxd4374432009-11-30 13:22:54 +0000435 struct ata_host *host;
Tejun Heof08048e2008-03-25 12:22:47 +0900436
437 rc = pcim_enable_device(pdev);
438 if (rc)
439 return rc;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400440
Jeff Garzik669a5db2006-08-29 18:12:40 -0400441 if (id->driver_data == 0) /* 643 */
Tejun Heo9363c382008-04-07 22:47:16 +0900442 ata_pci_bmdma_clear_simplex(pdev);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400443
Jeff Garzik669a5db2006-08-29 18:12:40 -0400444 if (pdev->device == PCI_DEVICE_ID_CMD_646) {
445 /* Does UDMA work ? */
Sergei Shtylyov89d3b362009-11-24 22:54:49 +0400446 if (pdev->revision > 4)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200447 ppi[0] = &cmd_info[2];
Jeff Garzik669a5db2006-08-29 18:12:40 -0400448 /* Early rev with other problems ? */
Sergei Shtylyov89d3b362009-11-24 22:54:49 +0400449 else if (pdev->revision == 1)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200450 ppi[0] = &cmd_info[3];
Jeff Garzik669a5db2006-08-29 18:12:40 -0400451 }
452
Alan Coxd4374432009-11-30 13:22:54 +0000453
Jeff Garzik669a5db2006-08-29 18:12:40 -0400454 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 64);
455 pci_read_config_byte(pdev, MRDMODE, &mrdmode);
456 mrdmode &= ~ 0x30; /* IRQ set up */
457 mrdmode |= 0x02; /* Memory read line enable */
458 pci_write_config_byte(pdev, MRDMODE, mrdmode);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400459
Jeff Garzik669a5db2006-08-29 18:12:40 -0400460 /* PPC specific fixup copied from old driver */
461#ifdef CONFIG_PPC
462 pci_write_config_byte(pdev, UDIDETCR0, 0xF0);
463#endif
Alan Coxd4374432009-11-30 13:22:54 +0000464 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
465 if (rc)
466 return rc;
467 /* We use this pointer to track the AP which has DMA running */
468 host->private_data = NULL;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400469
Alan Coxd4374432009-11-30 13:22:54 +0000470 pci_set_master(pdev);
471 return ata_pci_sff_activate_host(host, cmd64x_interrupt, &cmd64x_sht);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400472}
473
Tejun Heo438ac6d2007-03-02 17:31:26 +0900474#ifdef CONFIG_PM
Alan7f72a372006-11-22 16:59:07 +0000475static int cmd64x_reinit_one(struct pci_dev *pdev)
476{
Tejun Heof08048e2008-03-25 12:22:47 +0900477 struct ata_host *host = dev_get_drvdata(&pdev->dev);
Alan7f72a372006-11-22 16:59:07 +0000478 u8 mrdmode;
Tejun Heof08048e2008-03-25 12:22:47 +0900479 int rc;
480
481 rc = ata_pci_device_do_resume(pdev);
482 if (rc)
483 return rc;
484
Alan7f72a372006-11-22 16:59:07 +0000485 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 64);
486 pci_read_config_byte(pdev, MRDMODE, &mrdmode);
487 mrdmode &= ~ 0x30; /* IRQ set up */
488 mrdmode |= 0x02; /* Memory read line enable */
489 pci_write_config_byte(pdev, MRDMODE, mrdmode);
490#ifdef CONFIG_PPC
491 pci_write_config_byte(pdev, UDIDETCR0, 0xF0);
492#endif
Tejun Heof08048e2008-03-25 12:22:47 +0900493 ata_host_resume(host);
494 return 0;
Alan7f72a372006-11-22 16:59:07 +0000495}
Tejun Heo438ac6d2007-03-02 17:31:26 +0900496#endif
Alan7f72a372006-11-22 16:59:07 +0000497
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400498static const struct pci_device_id cmd64x[] = {
499 { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_643), 0 },
500 { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_646), 1 },
501 { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 4 },
502 { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 5 },
503
504 { },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400505};
506
507static struct pci_driver cmd64x_pci_driver = {
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400508 .name = DRV_NAME,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400509 .id_table = cmd64x,
510 .probe = cmd64x_init_one,
Alan7f72a372006-11-22 16:59:07 +0000511 .remove = ata_pci_remove_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900512#ifdef CONFIG_PM
Alan7f72a372006-11-22 16:59:07 +0000513 .suspend = ata_pci_device_suspend,
514 .resume = cmd64x_reinit_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900515#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400516};
517
518static int __init cmd64x_init(void)
519{
520 return pci_register_driver(&cmd64x_pci_driver);
521}
522
Jeff Garzik669a5db2006-08-29 18:12:40 -0400523static void __exit cmd64x_exit(void)
524{
525 pci_unregister_driver(&cmd64x_pci_driver);
526}
527
Jeff Garzik669a5db2006-08-29 18:12:40 -0400528MODULE_AUTHOR("Alan Cox");
529MODULE_DESCRIPTION("low-level driver for CMD64x series PATA controllers");
530MODULE_LICENSE("GPL");
531MODULE_DEVICE_TABLE(pci, cmd64x);
532MODULE_VERSION(DRV_VERSION);
533
534module_init(cmd64x_init);
535module_exit(cmd64x_exit);