blob: 030952f1f97c6e1290dc2a35663fbb29038f4d3e [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
2 * IDE tuning and bus mastering support for the CS5510/CS5520
3 * chipsets
4 *
5 * The CS5510/CS5520 are slightly unusual devices. Unlike the
6 * typical IDE controllers they do bus mastering with the drive in
7 * PIO mode and smarter silicon.
8 *
9 * The practical upshot of this is that we must always tune the
10 * drive for the right PIO mode. We must also ignore all the blacklists
11 * and the drive bus mastering DMA information. Also to confuse matters
12 * further we can do DMA on PIO only drives.
13 *
14 * DMA on the 5510 also requires we disable_hlt() during DMA on early
15 * revisions.
16 *
17 * *** This driver is strictly experimental ***
18 *
19 * (c) Copyright Red Hat Inc 2002
20 *
21 * This program is free software; you can redistribute it and/or modify it
22 * under the terms of the GNU General Public License as published by the
23 * Free Software Foundation; either version 2, or (at your option) any
24 * later version.
25 *
26 * This program is distributed in the hope that it will be useful, but
27 * WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
29 * General Public License for more details.
30 *
31 * Documentation:
32 * Not publically available.
33 */
34#include <linux/kernel.h>
35#include <linux/module.h>
36#include <linux/pci.h>
37#include <linux/init.h>
38#include <linux/blkdev.h>
39#include <linux/delay.h>
40#include <scsi/scsi_host.h>
41#include <linux/libata.h>
42
43#define DRV_NAME "pata_cs5520"
Jeff Garzik2a3103c2007-08-31 04:54:06 -040044#define DRV_VERSION "0.6.6"
Jeff Garzik669a5db2006-08-29 18:12:40 -040045
46struct pio_clocks
47{
48 int address;
49 int assert;
50 int recovery;
51};
52
53static const struct pio_clocks cs5520_pio_clocks[]={
54 {3, 6, 11},
55 {2, 5, 6},
56 {1, 4, 3},
57 {1, 3, 2},
58 {1, 2, 1}
59};
60
61/**
62 * cs5520_set_timings - program PIO timings
63 * @ap: ATA port
64 * @adev: ATA device
65 *
66 * Program the PIO mode timings for the controller according to the pio
67 * clocking table.
68 */
69
70static void cs5520_set_timings(struct ata_port *ap, struct ata_device *adev, int pio)
71{
72 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
73 int slave = adev->devno;
74
75 pio -= XFER_PIO_0;
76
77 /* Channel command timing */
78 pci_write_config_byte(pdev, 0x62 + ap->port_no,
79 (cs5520_pio_clocks[pio].recovery << 4) |
80 (cs5520_pio_clocks[pio].assert));
81 /* FIXME: should these use address ? */
82 /* Read command timing */
83 pci_write_config_byte(pdev, 0x64 + 4*ap->port_no + slave,
84 (cs5520_pio_clocks[pio].recovery << 4) |
85 (cs5520_pio_clocks[pio].assert));
86 /* Write command timing */
87 pci_write_config_byte(pdev, 0x66 + 4*ap->port_no + slave,
88 (cs5520_pio_clocks[pio].recovery << 4) |
89 (cs5520_pio_clocks[pio].assert));
90}
91
92/**
Jeff Garzik669a5db2006-08-29 18:12:40 -040093 * cs5520_set_piomode - program PIO timings
94 * @ap: ATA port
95 * @adev: ATA device
96 *
97 * Program the PIO mode timings for the controller according to the pio
Bartlomiej Zolnierkiewicz940a68d2009-12-03 20:32:09 +010098 * clocking table.
Jeff Garzik669a5db2006-08-29 18:12:40 -040099 */
100
101static void cs5520_set_piomode(struct ata_port *ap, struct ata_device *adev)
102{
103 cs5520_set_timings(ap, adev, adev->pio_mode);
104}
105
Jeff Garzik669a5db2006-08-29 18:12:40 -0400106static struct scsi_host_template cs5520_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900107 ATA_BMDMA_SHT(DRV_NAME),
Alan Coxd26fc952007-07-06 19:13:52 -0400108 .sg_tablesize = LIBATA_DUMB_MAX_PRD,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400109};
110
111static struct ata_port_operations cs5520_port_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900112 .inherits = &ata_bmdma_port_ops,
Tejun Heof47451c2010-05-10 21:41:40 +0200113 .qc_prep = ata_bmdma_dumb_qc_prep,
Tejun Heo029cfd62008-03-25 12:22:49 +0900114 .cable_detect = ata_cable_40wire,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400115 .set_piomode = cs5520_set_piomode,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400116};
117
Tejun Heo5d728822007-04-17 23:44:08 +0900118static int __devinit cs5520_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
Jeff Garzik669a5db2006-08-29 18:12:40 -0400119{
Tejun Heocbcdd872007-08-18 13:14:55 +0900120 static const unsigned int cmd_port[] = { 0x1F0, 0x170 };
121 static const unsigned int ctl_port[] = { 0x3F6, 0x376 };
Tejun Heo5d728822007-04-17 23:44:08 +0900122 struct ata_port_info pi = {
123 .flags = ATA_FLAG_SLAVE_POSS,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100124 .pio_mask = ATA_PIO4,
Tejun Heo5d728822007-04-17 23:44:08 +0900125 .port_ops = &cs5520_port_ops,
126 };
127 const struct ata_port_info *ppi[2];
Jeff Garzik669a5db2006-08-29 18:12:40 -0400128 u8 pcicfg;
Al Viro4ca4e432007-12-30 09:32:22 +0000129 void __iomem *iomap[5];
Tejun Heo5d728822007-04-17 23:44:08 +0900130 struct ata_host *host;
131 struct ata_ioports *ioaddr;
132 int i, rc;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400133
Tejun Heof08048e2008-03-25 12:22:47 +0900134 rc = pcim_enable_device(pdev);
135 if (rc)
136 return rc;
137
Jeff Garzik669a5db2006-08-29 18:12:40 -0400138 /* IDE port enable bits */
Tejun Heo5d728822007-04-17 23:44:08 +0900139 pci_read_config_byte(pdev, 0x60, &pcicfg);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400140
141 /* Check if the ATA ports are enabled */
142 if ((pcicfg & 3) == 0)
143 return -ENODEV;
144
Tejun Heo5d728822007-04-17 23:44:08 +0900145 ppi[0] = ppi[1] = &ata_dummy_port_info;
146 if (pcicfg & 1)
147 ppi[0] = &pi;
148 if (pcicfg & 2)
149 ppi[1] = &pi;
150
Jeff Garzik669a5db2006-08-29 18:12:40 -0400151 if ((pcicfg & 0x40) == 0) {
Tejun Heo5d728822007-04-17 23:44:08 +0900152 dev_printk(KERN_WARNING, &pdev->dev,
153 "DMA mode disabled. Enabling.\n");
154 pci_write_config_byte(pdev, 0x60, pcicfg | 0x40);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400155 }
156
Tejun Heo5d728822007-04-17 23:44:08 +0900157 pi.mwdma_mask = id->driver_data;
158
159 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2);
160 if (!host)
161 return -ENOMEM;
162
Jeff Garzik669a5db2006-08-29 18:12:40 -0400163 /* Perform set up for DMA */
Benjamin Herrenschmidt09483912007-12-20 15:28:09 +1100164 if (pci_enable_device_io(pdev)) {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400165 printk(KERN_ERR DRV_NAME ": unable to configure BAR2.\n");
166 return -ENODEV;
167 }
Tejun Heo5d728822007-04-17 23:44:08 +0900168
Yang Hongyang284901a2009-04-06 19:01:15 -0700169 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400170 printk(KERN_ERR DRV_NAME ": unable to configure DMA mask.\n");
171 return -ENODEV;
172 }
Yang Hongyang284901a2009-04-06 19:01:15 -0700173 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400174 printk(KERN_ERR DRV_NAME ": unable to configure consistent DMA mask.\n");
175 return -ENODEV;
176 }
177
Tejun Heo5d728822007-04-17 23:44:08 +0900178 /* Map IO ports and initialize host accordingly */
Tejun Heocbcdd872007-08-18 13:14:55 +0900179 iomap[0] = devm_ioport_map(&pdev->dev, cmd_port[0], 8);
180 iomap[1] = devm_ioport_map(&pdev->dev, ctl_port[0], 1);
181 iomap[2] = devm_ioport_map(&pdev->dev, cmd_port[1], 8);
182 iomap[3] = devm_ioport_map(&pdev->dev, ctl_port[1], 1);
Tejun Heo5d728822007-04-17 23:44:08 +0900183 iomap[4] = pcim_iomap(pdev, 2, 0);
Tejun Heo0d5ff562007-02-01 15:06:36 +0900184
185 if (!iomap[0] || !iomap[1] || !iomap[2] || !iomap[3] || !iomap[4])
186 return -ENOMEM;
187
Tejun Heo5d728822007-04-17 23:44:08 +0900188 ioaddr = &host->ports[0]->ioaddr;
189 ioaddr->cmd_addr = iomap[0];
190 ioaddr->ctl_addr = iomap[1];
191 ioaddr->altstatus_addr = iomap[1];
192 ioaddr->bmdma_addr = iomap[4];
Tejun Heo9363c382008-04-07 22:47:16 +0900193 ata_sff_std_ports(ioaddr);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400194
Tejun Heocbcdd872007-08-18 13:14:55 +0900195 ata_port_desc(host->ports[0],
196 "cmd 0x%x ctl 0x%x", cmd_port[0], ctl_port[0]);
197 ata_port_pbar_desc(host->ports[0], 4, 0, "bmdma");
198
Tejun Heo5d728822007-04-17 23:44:08 +0900199 ioaddr = &host->ports[1]->ioaddr;
200 ioaddr->cmd_addr = iomap[2];
201 ioaddr->ctl_addr = iomap[3];
202 ioaddr->altstatus_addr = iomap[3];
203 ioaddr->bmdma_addr = iomap[4] + 8;
Tejun Heo9363c382008-04-07 22:47:16 +0900204 ata_sff_std_ports(ioaddr);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400205
Tejun Heocbcdd872007-08-18 13:14:55 +0900206 ata_port_desc(host->ports[1],
207 "cmd 0x%x ctl 0x%x", cmd_port[1], ctl_port[1]);
208 ata_port_pbar_desc(host->ports[1], 4, 8, "bmdma");
209
Tejun Heo5d728822007-04-17 23:44:08 +0900210 /* activate the host */
211 pci_set_master(pdev);
212 rc = ata_host_start(host);
213 if (rc)
214 return rc;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400215
Tejun Heo5d728822007-04-17 23:44:08 +0900216 for (i = 0; i < 2; i++) {
217 static const int irq[] = { 14, 15 };
Alan Cox8c6b0652007-07-20 15:36:31 +0100218 struct ata_port *ap = host->ports[i];
Jeff Garzik669a5db2006-08-29 18:12:40 -0400219
Tejun Heo5d728822007-04-17 23:44:08 +0900220 if (ata_port_is_dummy(ap))
221 continue;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400222
Tejun Heo5d728822007-04-17 23:44:08 +0900223 rc = devm_request_irq(&pdev->dev, irq[ap->port_no],
Tejun Heoc3b28892010-05-19 22:10:21 +0200224 ata_bmdma_interrupt, 0, DRV_NAME, host);
Tejun Heo5d728822007-04-17 23:44:08 +0900225 if (rc)
226 return rc;
Tejun Heo40318262007-07-03 01:38:47 +0900227
Tejun Heocbcdd872007-08-18 13:14:55 +0900228 ata_port_desc(ap, "irq %d", irq[i]);
Tejun Heo5d728822007-04-17 23:44:08 +0900229 }
230
231 return ata_host_register(host, &cs5520_sht);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400232}
233
Tejun Heo438ac6d2007-03-02 17:31:26 +0900234#ifdef CONFIG_PM
Alan85011202006-11-22 17:01:06 +0000235/**
236 * cs5520_reinit_one - device resume
237 * @pdev: PCI device
238 *
239 * Do any reconfiguration work needed by a resume from RAM. We need
240 * to restore DMA mode support on BIOSen which disabled it
241 */
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500242
Alan85011202006-11-22 17:01:06 +0000243static int cs5520_reinit_one(struct pci_dev *pdev)
244{
Tejun Heof08048e2008-03-25 12:22:47 +0900245 struct ata_host *host = dev_get_drvdata(&pdev->dev);
Alan85011202006-11-22 17:01:06 +0000246 u8 pcicfg;
Tejun Heof08048e2008-03-25 12:22:47 +0900247 int rc;
248
249 rc = ata_pci_device_do_resume(pdev);
250 if (rc)
251 return rc;
252
Alan85011202006-11-22 17:01:06 +0000253 pci_read_config_byte(pdev, 0x60, &pcicfg);
254 if ((pcicfg & 0x40) == 0)
255 pci_write_config_byte(pdev, 0x60, pcicfg | 0x40);
Tejun Heof08048e2008-03-25 12:22:47 +0900256
257 ata_host_resume(host);
258 return 0;
Alan85011202006-11-22 17:01:06 +0000259}
Alanaa6de492007-02-20 17:44:25 +0000260
261/**
262 * cs5520_pci_device_suspend - device suspend
263 * @pdev: PCI device
264 *
265 * We have to cut and waste bits from the standard method because
266 * the 5520 is a bit odd and not just a pure ATA device. As a result
267 * we must not disable it. The needed code is short and this avoids
268 * chip specific mess in the core code.
269 */
270
271static int cs5520_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
272{
273 struct ata_host *host = dev_get_drvdata(&pdev->dev);
274 int rc = 0;
275
276 rc = ata_host_suspend(host, mesg);
277 if (rc)
278 return rc;
279
280 pci_save_state(pdev);
281 return 0;
282}
Tejun Heo438ac6d2007-03-02 17:31:26 +0900283#endif /* CONFIG_PM */
Jeff Garzika84471f2007-02-26 05:51:33 -0500284
Jeff Garzik669a5db2006-08-29 18:12:40 -0400285/* For now keep DMA off. We can set it for all but A rev CS5510 once the
286 core ATA code can handle it */
287
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400288static const struct pci_device_id pata_cs5520[] = {
289 { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), },
290 { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5520), },
291
292 { },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400293};
294
295static struct pci_driver cs5520_pci_driver = {
296 .name = DRV_NAME,
297 .id_table = pata_cs5520,
298 .probe = cs5520_init_one,
Jeff Garzik28555682007-10-11 17:12:35 -0400299 .remove = ata_pci_remove_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900300#ifdef CONFIG_PM
Alanaa6de492007-02-20 17:44:25 +0000301 .suspend = cs5520_pci_device_suspend,
Alan85011202006-11-22 17:01:06 +0000302 .resume = cs5520_reinit_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900303#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400304};
305
Jeff Garzik669a5db2006-08-29 18:12:40 -0400306static int __init cs5520_init(void)
307{
308 return pci_register_driver(&cs5520_pci_driver);
309}
310
311static void __exit cs5520_exit(void)
312{
313 pci_unregister_driver(&cs5520_pci_driver);
314}
315
316MODULE_AUTHOR("Alan Cox");
317MODULE_DESCRIPTION("low-level driver for Cyrix CS5510/5520");
318MODULE_LICENSE("GPL");
319MODULE_DEVICE_TABLE(pci, pata_cs5520);
320MODULE_VERSION(DRV_VERSION);
321
322module_init(cs5520_init);
323module_exit(cs5520_exit);
324