V4L/DVB (6715): ivtv: Remove unnecessary register update
[linux-2.6/verdex.git] / drivers / ata / sata_uli.c
blobe710e71b7b92ca89da03b14c1266d83dacc7dd19
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 .module = THIS_MODULE,
80 .name = DRV_NAME,
81 .ioctl = ata_scsi_ioctl,
82 .queuecommand = ata_scsi_queuecmd,
83 .can_queue = ATA_DEF_QUEUE,
84 .this_id = ATA_SHT_THIS_ID,
85 .sg_tablesize = LIBATA_MAX_PRD,
86 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
87 .emulated = ATA_SHT_EMULATED,
88 .use_clustering = ATA_SHT_USE_CLUSTERING,
89 .proc_name = DRV_NAME,
90 .dma_boundary = ATA_DMA_BOUNDARY,
91 .slave_configure = ata_scsi_slave_config,
92 .slave_destroy = ata_scsi_slave_destroy,
93 .bios_param = ata_std_bios_param,
96 static const struct ata_port_operations uli_ops = {
97 .tf_load = ata_tf_load,
98 .tf_read = ata_tf_read,
99 .check_status = ata_check_status,
100 .exec_command = ata_exec_command,
101 .dev_select = ata_std_dev_select,
103 .bmdma_setup = ata_bmdma_setup,
104 .bmdma_start = ata_bmdma_start,
105 .bmdma_stop = ata_bmdma_stop,
106 .bmdma_status = ata_bmdma_status,
107 .qc_prep = ata_qc_prep,
108 .qc_issue = ata_qc_issue_prot,
109 .data_xfer = ata_data_xfer,
111 .freeze = ata_bmdma_freeze,
112 .thaw = ata_bmdma_thaw,
113 .error_handler = ata_bmdma_error_handler,
114 .post_internal_cmd = ata_bmdma_post_internal_cmd,
116 .irq_clear = ata_bmdma_irq_clear,
117 .irq_on = ata_irq_on,
119 .scr_read = uli_scr_read,
120 .scr_write = uli_scr_write,
122 .port_start = ata_port_start,
125 static const struct ata_port_info uli_port_info = {
126 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
127 ATA_FLAG_IGN_SIMPLEX,
128 .pio_mask = 0x1f, /* pio0-4 */
129 .udma_mask = ATA_UDMA6,
130 .port_ops = &uli_ops,
134 MODULE_AUTHOR("Peer Chen");
135 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
136 MODULE_LICENSE("GPL");
137 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
138 MODULE_VERSION(DRV_VERSION);
140 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
142 struct uli_priv *hpriv = ap->host->private_data;
143 return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
146 static u32 uli_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg)
148 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
149 unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
150 u32 val;
152 pci_read_config_dword(pdev, cfg_addr, &val);
153 return val;
156 static void uli_scr_cfg_write(struct ata_port *ap, unsigned int scr, u32 val)
158 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
159 unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
161 pci_write_config_dword(pdev, cfg_addr, val);
164 static int uli_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
166 if (sc_reg > SCR_CONTROL)
167 return -EINVAL;
169 *val = uli_scr_cfg_read(ap, sc_reg);
170 return 0;
173 static int uli_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
175 if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
176 return -EINVAL;
178 uli_scr_cfg_write(ap, sc_reg, val);
179 return 0;
182 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
184 static int printed_version;
185 const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
186 unsigned int board_idx = (unsigned int) ent->driver_data;
187 struct ata_host *host;
188 struct uli_priv *hpriv;
189 void __iomem * const *iomap;
190 struct ata_ioports *ioaddr;
191 int n_ports, rc;
193 if (!printed_version++)
194 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
196 rc = pcim_enable_device(pdev);
197 if (rc)
198 return rc;
200 n_ports = 2;
201 if (board_idx == uli_5287)
202 n_ports = 4;
204 /* allocate the host */
205 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
206 if (!host)
207 return -ENOMEM;
209 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
210 if (!hpriv)
211 return -ENOMEM;
212 host->private_data = hpriv;
214 /* the first two ports are standard SFF */
215 rc = ata_pci_init_sff_host(host);
216 if (rc)
217 return rc;
219 rc = ata_pci_init_bmdma(host);
220 if (rc)
221 return rc;
223 iomap = host->iomap;
225 switch (board_idx) {
226 case uli_5287:
227 /* If there are four, the last two live right after
228 * the standard SFF ports.
230 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
231 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
233 ioaddr = &host->ports[2]->ioaddr;
234 ioaddr->cmd_addr = iomap[0] + 8;
235 ioaddr->altstatus_addr =
236 ioaddr->ctl_addr = (void __iomem *)
237 ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
238 ioaddr->bmdma_addr = iomap[4] + 16;
239 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
240 ata_std_ports(ioaddr);
242 ata_port_desc(host->ports[2],
243 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
244 (unsigned long long)pci_resource_start(pdev, 0) + 8,
245 ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
246 (unsigned long long)pci_resource_start(pdev, 4) + 16);
248 ioaddr = &host->ports[3]->ioaddr;
249 ioaddr->cmd_addr = iomap[2] + 8;
250 ioaddr->altstatus_addr =
251 ioaddr->ctl_addr = (void __iomem *)
252 ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
253 ioaddr->bmdma_addr = iomap[4] + 24;
254 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
255 ata_std_ports(ioaddr);
257 ata_port_desc(host->ports[2],
258 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
259 (unsigned long long)pci_resource_start(pdev, 2) + 9,
260 ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
261 (unsigned long long)pci_resource_start(pdev, 4) + 24);
263 break;
265 case uli_5289:
266 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
267 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
268 break;
270 case uli_5281:
271 hpriv->scr_cfg_addr[0] = ULI5281_BASE;
272 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
273 break;
275 default:
276 BUG();
277 break;
280 pci_set_master(pdev);
281 pci_intx(pdev, 1);
282 return ata_host_activate(host, pdev->irq, ata_interrupt, IRQF_SHARED,
283 &uli_sht);
286 static int __init uli_init(void)
288 return pci_register_driver(&uli_pci_driver);
291 static void __exit uli_exit(void)
293 pci_unregister_driver(&uli_pci_driver);
297 module_init(uli_init);
298 module_exit(uli_exit);