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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * sata_sis.c - Silicon Integrated Systems SATA
3 *
4 * Maintained by: Uwe Koziolek
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2004 Uwe Koziolek
9 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *
Jeff Garzikaf36d7f2005-08-28 20:18:39 -040011 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 *
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
28 *
29 * Hardware documentation available under NDA.
Linus Torvalds1da177e2005-04-16 15:20:36 -070030 *
31 */
32
33#include <linux/config.h>
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 <linux/interrupt.h>
Jeff Garzika9524a72005-10-30 14:39:11 -050041#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <scsi/scsi_host.h>
43#include <linux/libata.h>
44
45#define DRV_NAME "sata_sis"
46#define DRV_VERSION "0.5"
47
48enum {
49 sis_180 = 0,
50 SIS_SCR_PCI_BAR = 5,
51
52 /* PCI configuration registers */
53 SIS_GENCTL = 0x54, /* IDE General Control register */
54 SIS_SCR_BASE = 0xc0, /* sata0 phy SCR registers */
Arnaud Patardf2c853b2005-09-07 22:44:48 +020055 SIS180_SATA1_OFS = 0x10, /* offset from sata0->sata1 phy regs */
56 SIS182_SATA1_OFS = 0x20, /* offset from sata0->sata1 phy regs */
57 SIS_PMR = 0x90, /* port mapping register */
Jeff Garzik8add7882005-09-08 23:07:29 -040058 SIS_PMR_COMBINED = 0x30,
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60 /* random bits */
61 SIS_FLAG_CFGSCR = (1 << 30), /* host flag: SCRs via PCI cfg */
62
63 GENCTL_IOMAPPED_SCR = (1 << 26), /* if set, SCRs are in IO space */
64};
65
66static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
67static u32 sis_scr_read (struct ata_port *ap, unsigned int sc_reg);
68static void sis_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
69
Jeff Garzik3b7d6972005-11-10 11:04:11 -050070static const struct pci_device_id sis_pci_tbl[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 { PCI_VENDOR_ID_SI, 0x180, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sis_180 },
72 { PCI_VENDOR_ID_SI, 0x181, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sis_180 },
Arnaud Patardf2c853b2005-09-07 22:44:48 +020073 { PCI_VENDOR_ID_SI, 0x182, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sis_180 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 { } /* terminate list */
75};
76
77
78static struct pci_driver sis_pci_driver = {
79 .name = DRV_NAME,
80 .id_table = sis_pci_tbl,
81 .probe = sis_init_one,
82 .remove = ata_pci_remove_one,
83};
84
Jeff Garzik193515d2005-11-07 00:59:37 -050085static struct scsi_host_template sis_sht = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 .module = THIS_MODULE,
87 .name = DRV_NAME,
88 .ioctl = ata_scsi_ioctl,
89 .queuecommand = ata_scsi_queuecmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 .can_queue = ATA_DEF_QUEUE,
91 .this_id = ATA_SHT_THIS_ID,
92 .sg_tablesize = ATA_MAX_PRD,
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
94 .emulated = ATA_SHT_EMULATED,
95 .use_clustering = ATA_SHT_USE_CLUSTERING,
96 .proc_name = DRV_NAME,
97 .dma_boundary = ATA_DMA_BOUNDARY,
98 .slave_configure = ata_scsi_slave_config,
99 .bios_param = ata_std_bios_param,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100};
101
Jeff Garzik057ace52005-10-22 14:27:05 -0400102static const struct ata_port_operations sis_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 .port_disable = ata_port_disable,
104 .tf_load = ata_tf_load,
105 .tf_read = ata_tf_read,
106 .check_status = ata_check_status,
107 .exec_command = ata_exec_command,
108 .dev_select = ata_std_dev_select,
109 .phy_reset = sata_phy_reset,
110 .bmdma_setup = ata_bmdma_setup,
111 .bmdma_start = ata_bmdma_start,
112 .bmdma_stop = ata_bmdma_stop,
113 .bmdma_status = ata_bmdma_status,
114 .qc_prep = ata_qc_prep,
115 .qc_issue = ata_qc_issue_prot,
116 .eng_timeout = ata_eng_timeout,
117 .irq_handler = ata_interrupt,
118 .irq_clear = ata_bmdma_irq_clear,
119 .scr_read = sis_scr_read,
120 .scr_write = sis_scr_write,
121 .port_start = ata_port_start,
122 .port_stop = ata_port_stop,
Jeff Garzikaa8f0dc2005-05-26 21:54:27 -0400123 .host_stop = ata_host_stop,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124};
125
126static struct ata_port_info sis_port_info = {
127 .sht = &sis_sht,
128 .host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
129 ATA_FLAG_NO_LEGACY,
130 .pio_mask = 0x1f,
131 .mwdma_mask = 0x7,
132 .udma_mask = 0x7f,
133 .port_ops = &sis_ops,
134};
135
136
137MODULE_AUTHOR("Uwe Koziolek");
138MODULE_DESCRIPTION("low-level driver for Silicon Integratad Systems SATA controller");
139MODULE_LICENSE("GPL");
140MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
141MODULE_VERSION(DRV_VERSION);
142
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200143static unsigned int get_scr_cfg_addr(unsigned int port_no, unsigned int sc_reg, int device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144{
145 unsigned int addr = SIS_SCR_BASE + (4 * sc_reg);
146
Jeff Garzik8add7882005-09-08 23:07:29 -0400147 if (port_no) {
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200148 if (device == 0x182)
149 addr += SIS182_SATA1_OFS;
150 else
151 addr += SIS180_SATA1_OFS;
Jeff Garzik8add7882005-09-08 23:07:29 -0400152 }
153
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 return addr;
155}
156
157static u32 sis_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
158{
159 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200160 unsigned int cfg_addr = get_scr_cfg_addr(ap->port_no, sc_reg, pdev->device);
Uwe Koziolek668e4bc2005-09-11 17:03:35 +0200161 u32 val, val2 = 0;
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200162 u8 pmr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163
164 if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */
165 return 0xffffffff;
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200166
167 pci_read_config_byte(pdev, SIS_PMR, &pmr);
Jeff Garzik8add7882005-09-08 23:07:29 -0400168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 pci_read_config_dword(pdev, cfg_addr, &val);
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200170
Jeff Garzik8add7882005-09-08 23:07:29 -0400171 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200172 pci_read_config_dword(pdev, cfg_addr+0x10, &val2);
173
174 return val|val2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175}
176
177static void sis_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
178{
179 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200180 unsigned int cfg_addr = get_scr_cfg_addr(ap->port_no, scr, pdev->device);
181 u8 pmr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
183 if (scr == SCR_ERROR) /* doesn't exist in PCI cfg space */
184 return;
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200185
186 pci_read_config_byte(pdev, SIS_PMR, &pmr);
Jeff Garzik8add7882005-09-08 23:07:29 -0400187
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 pci_write_config_dword(pdev, cfg_addr, val);
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200189
190 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
191 pci_write_config_dword(pdev, cfg_addr+0x10, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192}
193
194static u32 sis_scr_read (struct ata_port *ap, unsigned int sc_reg)
195{
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200196 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
Jeff Garzik8add7882005-09-08 23:07:29 -0400197 u32 val, val2 = 0;
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200198 u8 pmr;
199
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 if (sc_reg > SCR_CONTROL)
201 return 0xffffffffU;
202
203 if (ap->flags & SIS_FLAG_CFGSCR)
204 return sis_scr_cfg_read(ap, sc_reg);
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200205
206 pci_read_config_byte(pdev, SIS_PMR, &pmr);
207
208 val = inl(ap->ioaddr.scr_addr + (sc_reg * 4));
209
210 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
Jeff Garzik8add7882005-09-08 23:07:29 -0400211 val2 = inl(ap->ioaddr.scr_addr + (sc_reg * 4) + 0x10);
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200212
Jeff Garzik8add7882005-09-08 23:07:29 -0400213 return val | val2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214}
215
216static void sis_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
217{
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200218 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
219 u8 pmr;
220
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 if (sc_reg > SCR_CONTROL)
222 return;
223
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200224 pci_read_config_byte(pdev, SIS_PMR, &pmr);
Jeff Garzik8add7882005-09-08 23:07:29 -0400225
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 if (ap->flags & SIS_FLAG_CFGSCR)
227 sis_scr_cfg_write(ap, sc_reg, val);
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200228 else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 outl(val, ap->ioaddr.scr_addr + (sc_reg * 4));
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200230 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
231 outl(val, ap->ioaddr.scr_addr + (sc_reg * 4)+0x10);
232 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233}
234
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
236{
Jeff Garzika9524a72005-10-30 14:39:11 -0500237 static int printed_version;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 struct ata_probe_ent *probe_ent = NULL;
239 int rc;
240 u32 genctl;
241 struct ata_port_info *ppi;
242 int pci_dev_busy = 0;
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200243 u8 pmr;
244 u8 port2_start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245
Jeff Garzika9524a72005-10-30 14:39:11 -0500246 if (!printed_version++)
247 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
248
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 rc = pci_enable_device(pdev);
250 if (rc)
251 return rc;
252
253 rc = pci_request_regions(pdev, DRV_NAME);
254 if (rc) {
255 pci_dev_busy = 1;
256 goto err_out;
257 }
258
259 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
260 if (rc)
261 goto err_out_regions;
262 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
263 if (rc)
264 goto err_out_regions;
265
266 ppi = &sis_port_info;
Alan Cox47a86592005-10-04 08:09:19 -0400267 probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 if (!probe_ent) {
269 rc = -ENOMEM;
270 goto err_out_regions;
271 }
272
273 /* check and see if the SCRs are in IO space or PCI cfg space */
274 pci_read_config_dword(pdev, SIS_GENCTL, &genctl);
275 if ((genctl & GENCTL_IOMAPPED_SCR) == 0)
276 probe_ent->host_flags |= SIS_FLAG_CFGSCR;
Jeff Garzik8a60a072005-07-31 13:13:24 -0400277
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 /* if hardware thinks SCRs are in IO space, but there are
279 * no IO resources assigned, change to PCI cfg space.
280 */
281 if ((!(probe_ent->host_flags & SIS_FLAG_CFGSCR)) &&
282 ((pci_resource_start(pdev, SIS_SCR_PCI_BAR) == 0) ||
283 (pci_resource_len(pdev, SIS_SCR_PCI_BAR) < 128))) {
284 genctl &= ~GENCTL_IOMAPPED_SCR;
285 pci_write_config_dword(pdev, SIS_GENCTL, genctl);
286 probe_ent->host_flags |= SIS_FLAG_CFGSCR;
287 }
288
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200289 pci_read_config_byte(pdev, SIS_PMR, &pmr);
290 if (ent->device != 0x182) {
291 if ((pmr & SIS_PMR_COMBINED) == 0) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500292 dev_printk(KERN_INFO, &pdev->dev,
293 "Detected SiS 180/181 chipset in SATA mode\n");
Arnaud Patard39eb9362005-09-13 00:36:45 +0200294 port2_start = 64;
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200295 }
296 else {
Jeff Garzika9524a72005-10-30 14:39:11 -0500297 dev_printk(KERN_INFO, &pdev->dev,
298 "Detected SiS 180/181 chipset in combined mode\n");
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200299 port2_start=0;
300 }
301 }
302 else {
Jeff Garzika9524a72005-10-30 14:39:11 -0500303 dev_printk(KERN_INFO, &pdev->dev, "Detected SiS 182 chipset\n");
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200304 port2_start = 0x20;
305 }
306
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 if (!(probe_ent->host_flags & SIS_FLAG_CFGSCR)) {
308 probe_ent->port[0].scr_addr =
309 pci_resource_start(pdev, SIS_SCR_PCI_BAR);
310 probe_ent->port[1].scr_addr =
Arnaud Patardf2c853b2005-09-07 22:44:48 +0200311 pci_resource_start(pdev, SIS_SCR_PCI_BAR) + port2_start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 }
313
314 pci_set_master(pdev);
Brett M Russa04ce0f2005-08-15 15:23:41 -0400315 pci_intx(pdev, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
317 /* FIXME: check ata_device_add return value */
318 ata_device_add(probe_ent);
319 kfree(probe_ent);
320
321 return 0;
322
323err_out_regions:
324 pci_release_regions(pdev);
325
326err_out:
327 if (!pci_dev_busy)
328 pci_disable_device(pdev);
329 return rc;
330
331}
332
333static int __init sis_init(void)
334{
335 return pci_module_init(&sis_pci_driver);
336}
337
338static void __exit sis_exit(void)
339{
340 pci_unregister_driver(&sis_pci_driver);
341}
342
343module_init(sis_init);
344module_exit(sis_exit);
345