ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / drivers / ata / sata_uli.c
blobf277cea904ce89bc90adc909ca5fe0809a13c621
1 /*
2 * sata_uli.c - ULi Electronics SATA
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
8 * any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; see the file COPYING. If not, write to
17 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 * libata documentation is available via 'make {ps|pdf}docs',
21 * as Documentation/DocBook/libata.*
23 * Hardware documentation available under NDA.
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/pci.h>
30 #include <linux/init.h>
31 #include <linux/blkdev.h>
32 #include <linux/delay.h>
33 #include <linux/interrupt.h>
34 #include <linux/device.h>
35 #include <scsi/scsi_host.h>
36 #include <linux/libata.h>
38 #define DRV_NAME "sata_uli"
39 #define DRV_VERSION "1.3"
41 enum {
42 uli_5289 = 0,
43 uli_5287 = 1,
44 uli_5281 = 2,
46 uli_max_ports = 4,
48 /* PCI configuration registers */
49 ULI5287_BASE = 0x90, /* sata0 phy SCR registers */
50 ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */
51 ULI5281_BASE = 0x60, /* sata0 phy SCR registers */
52 ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */
55 struct uli_priv {
56 unsigned int scr_cfg_addr[uli_max_ports];
59 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
60 static int uli_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
61 static int uli_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
63 static const struct pci_device_id uli_pci_tbl[] = {
64 { PCI_VDEVICE(AL, 0x5289), uli_5289 },
65 { PCI_VDEVICE(AL, 0x5287), uli_5287 },
66 { PCI_VDEVICE(AL, 0x5281), uli_5281 },
68 { } /* terminate list */
71 static struct pci_driver uli_pci_driver = {
72 .name = DRV_NAME,
73 .id_table = uli_pci_tbl,
74 .probe = uli_init_one,
75 .remove = ata_pci_remove_one,
78 static struct scsi_host_template uli_sht = {
79 ATA_BMDMA_SHT(DRV_NAME),
82 static struct ata_port_operations uli_ops = {
83 .inherits = &ata_bmdma_port_ops,
84 .scr_read = uli_scr_read,
85 .scr_write = uli_scr_write,
88 static const struct ata_port_info uli_port_info = {
89 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
90 ATA_FLAG_IGN_SIMPLEX,
91 .pio_mask = 0x1f, /* pio0-4 */
92 .udma_mask = ATA_UDMA6,
93 .port_ops = &uli_ops,
97 MODULE_AUTHOR("Peer Chen");
98 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
99 MODULE_LICENSE("GPL");
100 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
101 MODULE_VERSION(DRV_VERSION);
103 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
105 struct uli_priv *hpriv = ap->host->private_data;
106 return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
109 static u32 uli_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg)
111 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
112 unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
113 u32 val;
115 pci_read_config_dword(pdev, cfg_addr, &val);
116 return val;
119 static void uli_scr_cfg_write(struct ata_port *ap, unsigned int scr, u32 val)
121 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
122 unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
124 pci_write_config_dword(pdev, cfg_addr, val);
127 static int uli_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
129 if (sc_reg > SCR_CONTROL)
130 return -EINVAL;
132 *val = uli_scr_cfg_read(ap, sc_reg);
133 return 0;
136 static int uli_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
138 if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
139 return -EINVAL;
141 uli_scr_cfg_write(ap, sc_reg, val);
142 return 0;
145 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
147 static int printed_version;
148 const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
149 unsigned int board_idx = (unsigned int) ent->driver_data;
150 struct ata_host *host;
151 struct uli_priv *hpriv;
152 void __iomem * const *iomap;
153 struct ata_ioports *ioaddr;
154 int n_ports, rc;
156 if (!printed_version++)
157 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
159 rc = pcim_enable_device(pdev);
160 if (rc)
161 return rc;
163 n_ports = 2;
164 if (board_idx == uli_5287)
165 n_ports = 4;
167 /* allocate the host */
168 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
169 if (!host)
170 return -ENOMEM;
172 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
173 if (!hpriv)
174 return -ENOMEM;
175 host->private_data = hpriv;
177 /* the first two ports are standard SFF */
178 rc = ata_pci_sff_init_host(host);
179 if (rc)
180 return rc;
182 rc = ata_pci_bmdma_init(host);
183 if (rc)
184 return rc;
186 iomap = host->iomap;
188 switch (board_idx) {
189 case uli_5287:
190 /* If there are four, the last two live right after
191 * the standard SFF ports.
193 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
194 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
196 ioaddr = &host->ports[2]->ioaddr;
197 ioaddr->cmd_addr = iomap[0] + 8;
198 ioaddr->altstatus_addr =
199 ioaddr->ctl_addr = (void __iomem *)
200 ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
201 ioaddr->bmdma_addr = iomap[4] + 16;
202 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
203 ata_sff_std_ports(ioaddr);
205 ata_port_desc(host->ports[2],
206 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
207 (unsigned long long)pci_resource_start(pdev, 0) + 8,
208 ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
209 (unsigned long long)pci_resource_start(pdev, 4) + 16);
211 ioaddr = &host->ports[3]->ioaddr;
212 ioaddr->cmd_addr = iomap[2] + 8;
213 ioaddr->altstatus_addr =
214 ioaddr->ctl_addr = (void __iomem *)
215 ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
216 ioaddr->bmdma_addr = iomap[4] + 24;
217 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
218 ata_sff_std_ports(ioaddr);
220 ata_port_desc(host->ports[2],
221 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
222 (unsigned long long)pci_resource_start(pdev, 2) + 9,
223 ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
224 (unsigned long long)pci_resource_start(pdev, 4) + 24);
226 break;
228 case uli_5289:
229 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
230 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
231 break;
233 case uli_5281:
234 hpriv->scr_cfg_addr[0] = ULI5281_BASE;
235 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
236 break;
238 default:
239 BUG();
240 break;
243 pci_set_master(pdev);
244 pci_intx(pdev, 1);
245 return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
246 IRQF_SHARED, &uli_sht);
249 static int __init uli_init(void)
251 return pci_register_driver(&uli_pci_driver);
254 static void __exit uli_exit(void)
256 pci_unregister_driver(&uli_pci_driver);
260 module_init(uli_init);
261 module_exit(uli_exit);