x86: cache_info: Kill the atomic allocation in amd_init_l3_cache()
[linux-2.6/linux-mips.git] / drivers / ata / sata_uli.c
blob235be717a71352a5a40c5cedfcfd0ec088bb99ff
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/gfp.h>
30 #include <linux/pci.h>
31 #include <linux/init.h>
32 #include <linux/blkdev.h>
33 #include <linux/delay.h>
34 #include <linux/interrupt.h>
35 #include <linux/device.h>
36 #include <scsi/scsi_host.h>
37 #include <linux/libata.h>
39 #define DRV_NAME "sata_uli"
40 #define DRV_VERSION "1.3"
42 enum {
43 uli_5289 = 0,
44 uli_5287 = 1,
45 uli_5281 = 2,
47 uli_max_ports = 4,
49 /* PCI configuration registers */
50 ULI5287_BASE = 0x90, /* sata0 phy SCR registers */
51 ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */
52 ULI5281_BASE = 0x60, /* sata0 phy SCR registers */
53 ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */
56 struct uli_priv {
57 unsigned int scr_cfg_addr[uli_max_ports];
60 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
61 static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
62 static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
64 static const struct pci_device_id uli_pci_tbl[] = {
65 { PCI_VDEVICE(AL, 0x5289), uli_5289 },
66 { PCI_VDEVICE(AL, 0x5287), uli_5287 },
67 { PCI_VDEVICE(AL, 0x5281), uli_5281 },
69 { } /* terminate list */
72 static struct pci_driver uli_pci_driver = {
73 .name = DRV_NAME,
74 .id_table = uli_pci_tbl,
75 .probe = uli_init_one,
76 .remove = ata_pci_remove_one,
79 static struct scsi_host_template uli_sht = {
80 ATA_BMDMA_SHT(DRV_NAME),
83 static struct ata_port_operations uli_ops = {
84 .inherits = &ata_bmdma_port_ops,
85 .scr_read = uli_scr_read,
86 .scr_write = uli_scr_write,
87 .hardreset = ATA_OP_NULL,
90 static const struct ata_port_info uli_port_info = {
91 .flags = ATA_FLAG_SATA | ATA_FLAG_IGN_SIMPLEX,
92 .pio_mask = ATA_PIO4,
93 .udma_mask = ATA_UDMA6,
94 .port_ops = &uli_ops,
98 MODULE_AUTHOR("Peer Chen");
99 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
100 MODULE_LICENSE("GPL");
101 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
102 MODULE_VERSION(DRV_VERSION);
104 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
106 struct uli_priv *hpriv = ap->host->private_data;
107 return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
110 static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
112 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
113 unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
114 u32 val;
116 pci_read_config_dword(pdev, cfg_addr, &val);
117 return val;
120 static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
122 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
123 unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);
125 pci_write_config_dword(pdev, cfg_addr, val);
128 static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
130 if (sc_reg > SCR_CONTROL)
131 return -EINVAL;
133 *val = uli_scr_cfg_read(link, sc_reg);
134 return 0;
137 static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
139 if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
140 return -EINVAL;
142 uli_scr_cfg_write(link, sc_reg, val);
143 return 0;
146 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
148 static int printed_version;
149 const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
150 unsigned int board_idx = (unsigned int) ent->driver_data;
151 struct ata_host *host;
152 struct uli_priv *hpriv;
153 void __iomem * const *iomap;
154 struct ata_ioports *ioaddr;
155 int n_ports, rc;
157 if (!printed_version++)
158 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
160 rc = pcim_enable_device(pdev);
161 if (rc)
162 return rc;
164 n_ports = 2;
165 if (board_idx == uli_5287)
166 n_ports = 4;
168 /* allocate the host */
169 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
170 if (!host)
171 return -ENOMEM;
173 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
174 if (!hpriv)
175 return -ENOMEM;
176 host->private_data = hpriv;
178 /* the first two ports are standard SFF */
179 rc = ata_pci_sff_init_host(host);
180 if (rc)
181 return rc;
183 ata_pci_bmdma_init(host);
185 iomap = host->iomap;
187 switch (board_idx) {
188 case uli_5287:
189 /* If there are four, the last two live right after
190 * the standard SFF ports.
192 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
193 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
195 ioaddr = &host->ports[2]->ioaddr;
196 ioaddr->cmd_addr = iomap[0] + 8;
197 ioaddr->altstatus_addr =
198 ioaddr->ctl_addr = (void __iomem *)
199 ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
200 ioaddr->bmdma_addr = iomap[4] + 16;
201 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
202 ata_sff_std_ports(ioaddr);
204 ata_port_desc(host->ports[2],
205 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
206 (unsigned long long)pci_resource_start(pdev, 0) + 8,
207 ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
208 (unsigned long long)pci_resource_start(pdev, 4) + 16);
210 ioaddr = &host->ports[3]->ioaddr;
211 ioaddr->cmd_addr = iomap[2] + 8;
212 ioaddr->altstatus_addr =
213 ioaddr->ctl_addr = (void __iomem *)
214 ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
215 ioaddr->bmdma_addr = iomap[4] + 24;
216 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
217 ata_sff_std_ports(ioaddr);
219 ata_port_desc(host->ports[2],
220 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
221 (unsigned long long)pci_resource_start(pdev, 2) + 9,
222 ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
223 (unsigned long long)pci_resource_start(pdev, 4) + 24);
225 break;
227 case uli_5289:
228 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
229 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
230 break;
232 case uli_5281:
233 hpriv->scr_cfg_addr[0] = ULI5281_BASE;
234 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
235 break;
237 default:
238 BUG();
239 break;
242 pci_set_master(pdev);
243 pci_intx(pdev, 1);
244 return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
245 IRQF_SHARED, &uli_sht);
248 static int __init uli_init(void)
250 return pci_register_driver(&uli_pci_driver);
253 static void __exit uli_exit(void)
255 pci_unregister_driver(&uli_pci_driver);
259 module_init(uli_init);
260 module_exit(uli_exit);