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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * sata_uli.c - ULi Electronics SATA
3 *
4 * The contents of this file are subject to the Open
5 * Software License version 1.1 that can be found at
6 * http://www.opensource.org/licenses/osl-1.1.txt and is included herein
7 * by reference.
8 *
9 * Alternatively, the contents of this file may be used under the terms
10 * of the GNU General Public License version 2 (the "GPL") as distributed
11 * in the kernel source COPYING file, in which case the provisions of
12 * the GPL are applicable instead of the above. If you wish to allow
13 * the use of your version of this file only under the terms of the
14 * GPL and not to allow others to use your version of this file under
15 * the OSL, indicate your decision by deleting the provisions above and
16 * replace them with the notice and other provisions required by the GPL.
17 * If you do not delete the provisions above, a recipient may use your
18 * version of this file under either the OSL or the GPL.
19 *
20 */
21
22#include <linux/config.h>
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/pci.h>
26#include <linux/init.h>
27#include <linux/blkdev.h>
28#include <linux/delay.h>
29#include <linux/interrupt.h>
30#include "scsi.h"
31#include <scsi/scsi_host.h>
32#include <linux/libata.h>
33
34#define DRV_NAME "sata_uli"
35#define DRV_VERSION "0.5"
36
37enum {
38 uli_5289 = 0,
39 uli_5287 = 1,
40 uli_5281 = 2,
41
42 /* PCI configuration registers */
43 ULI5287_BASE = 0x90, /* sata0 phy SCR registers */
44 ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */
45 ULI5281_BASE = 0x60, /* sata0 phy SCR registers */
46 ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */
47};
48
49static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
50static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
51static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
52
53static struct pci_device_id uli_pci_tbl[] = {
54 { PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
55 { PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
56 { PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 },
57 { } /* terminate list */
58};
59
60
61static struct pci_driver uli_pci_driver = {
62 .name = DRV_NAME,
63 .id_table = uli_pci_tbl,
64 .probe = uli_init_one,
65 .remove = ata_pci_remove_one,
66};
67
68static Scsi_Host_Template uli_sht = {
69 .module = THIS_MODULE,
70 .name = DRV_NAME,
71 .ioctl = ata_scsi_ioctl,
72 .queuecommand = ata_scsi_queuecmd,
73 .eh_strategy_handler = ata_scsi_error,
74 .can_queue = ATA_DEF_QUEUE,
75 .this_id = ATA_SHT_THIS_ID,
76 .sg_tablesize = LIBATA_MAX_PRD,
77 .max_sectors = ATA_MAX_SECTORS,
78 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
79 .emulated = ATA_SHT_EMULATED,
80 .use_clustering = ATA_SHT_USE_CLUSTERING,
81 .proc_name = DRV_NAME,
82 .dma_boundary = ATA_DMA_BOUNDARY,
83 .slave_configure = ata_scsi_slave_config,
84 .bios_param = ata_std_bios_param,
85 .ordered_flush = 1,
86};
87
88static struct ata_port_operations uli_ops = {
89 .port_disable = ata_port_disable,
90
91 .tf_load = ata_tf_load,
92 .tf_read = ata_tf_read,
93 .check_status = ata_check_status,
94 .exec_command = ata_exec_command,
95 .dev_select = ata_std_dev_select,
96
97 .phy_reset = sata_phy_reset,
98
99 .bmdma_setup = ata_bmdma_setup,
100 .bmdma_start = ata_bmdma_start,
101 .bmdma_stop = ata_bmdma_stop,
102 .bmdma_status = ata_bmdma_status,
103 .qc_prep = ata_qc_prep,
104 .qc_issue = ata_qc_issue_prot,
105
106 .eng_timeout = ata_eng_timeout,
107
108 .irq_handler = ata_interrupt,
109 .irq_clear = ata_bmdma_irq_clear,
110
111 .scr_read = uli_scr_read,
112 .scr_write = uli_scr_write,
113
114 .port_start = ata_port_start,
115 .port_stop = ata_port_stop,
Jeff Garzikaa8f0dc2005-05-26 21:54:27 -0400116 .host_stop = ata_host_stop,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117};
118
119static struct ata_port_info uli_port_info = {
120 .sht = &uli_sht,
121 .host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
122 ATA_FLAG_NO_LEGACY,
123 .pio_mask = 0x03, //support pio mode 4 (FIXME)
124 .udma_mask = 0x7f, //support udma mode 6
125 .port_ops = &uli_ops,
126};
127
128
129MODULE_AUTHOR("Peer Chen");
130MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
131MODULE_LICENSE("GPL");
132MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
133MODULE_VERSION(DRV_VERSION);
134
135static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
136{
137 return ap->ioaddr.scr_addr + (4 * sc_reg);
138}
139
140static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
141{
142 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
143 unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
144 u32 val;
145
146 pci_read_config_dword(pdev, cfg_addr, &val);
147 return val;
148}
149
150static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
151{
152 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
153 unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
154
155 pci_write_config_dword(pdev, cfg_addr, val);
156}
157
158static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
159{
160 if (sc_reg > SCR_CONTROL)
161 return 0xffffffffU;
162
163 return uli_scr_cfg_read(ap, sc_reg);
164}
165
166static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
167{
168 if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
169 return;
170
171 uli_scr_cfg_write(ap, sc_reg, val);
172}
173
174/* move to PCI layer, integrate w/ MSI stuff */
175static void pci_enable_intx(struct pci_dev *pdev)
176{
177 u16 pci_command;
178
179 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
180 if (pci_command & PCI_COMMAND_INTX_DISABLE) {
181 pci_command &= ~PCI_COMMAND_INTX_DISABLE;
182 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
183 }
184}
185
186static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
187{
188 struct ata_probe_ent *probe_ent;
189 struct ata_port_info *ppi;
190 int rc;
191 unsigned int board_idx = (unsigned int) ent->driver_data;
192 int pci_dev_busy = 0;
193
194 rc = pci_enable_device(pdev);
195 if (rc)
196 return rc;
197
198 rc = pci_request_regions(pdev, DRV_NAME);
199 if (rc) {
200 pci_dev_busy = 1;
201 goto err_out;
202 }
203
204 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
205 if (rc)
206 goto err_out_regions;
207 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
208 if (rc)
209 goto err_out_regions;
210
211 ppi = &uli_port_info;
212 probe_ent = ata_pci_init_native_mode(pdev, &ppi);
213 if (!probe_ent) {
214 rc = -ENOMEM;
215 goto err_out_regions;
216 }
217
218 switch (board_idx) {
219 case uli_5287:
220 probe_ent->port[0].scr_addr = ULI5287_BASE;
221 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
222 probe_ent->n_ports = 4;
223
224 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
225 probe_ent->port[2].altstatus_addr =
226 probe_ent->port[2].ctl_addr =
227 (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
228 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
229 probe_ent->port[2].scr_addr = ULI5287_BASE + ULI5287_OFFS*4;
230
231 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
232 probe_ent->port[3].altstatus_addr =
233 probe_ent->port[3].ctl_addr =
234 (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
235 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
236 probe_ent->port[3].scr_addr = ULI5287_BASE + ULI5287_OFFS*5;
237
238 ata_std_ports(&probe_ent->port[2]);
239 ata_std_ports(&probe_ent->port[3]);
240 break;
241
242 case uli_5289:
243 probe_ent->port[0].scr_addr = ULI5287_BASE;
244 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
245 break;
246
247 case uli_5281:
248 probe_ent->port[0].scr_addr = ULI5281_BASE;
249 probe_ent->port[1].scr_addr = ULI5281_BASE + ULI5281_OFFS;
250 break;
251
252 default:
253 BUG();
254 break;
255 }
256
257 pci_set_master(pdev);
258 pci_enable_intx(pdev);
259
260 /* FIXME: check ata_device_add return value */
261 ata_device_add(probe_ent);
262 kfree(probe_ent);
263
264 return 0;
265
266err_out_regions:
267 pci_release_regions(pdev);
268
269err_out:
270 if (!pci_dev_busy)
271 pci_disable_device(pdev);
272 return rc;
273
274}
275
276static int __init uli_init(void)
277{
278 return pci_module_init(&uli_pci_driver);
279}
280
281static void __exit uli_exit(void)
282{
283 pci_unregister_driver(&uli_pci_driver);
284}
285
286
287module_init(uli_init);
288module_exit(uli_exit);