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1 | /* | |
2 | * sata_uli.c - ULi Electronics SATA | |
3 | * | |
4 | * | |
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. | |
9 | * | |
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. | |
14 | * | |
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. | |
18 | * | |
19 | * | |
20 | * libata documentation is available via 'make {ps|pdf}docs', | |
21 | * as Documentation/DocBook/libata.* | |
22 | * | |
23 | * Hardware documentation available under NDA. | |
24 | * | |
25 | */ | |
26 | ||
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> | |
38 | ||
39 | #define DRV_NAME "sata_uli" | |
40 | #define DRV_VERSION "1.3" | |
41 | ||
42 | enum { | |
43 | uli_5289 = 0, | |
44 | uli_5287 = 1, | |
45 | uli_5281 = 2, | |
46 | ||
47 | uli_max_ports = 4, | |
48 | ||
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 */ | |
54 | }; | |
55 | ||
56 | struct uli_priv { | |
57 | unsigned int scr_cfg_addr[uli_max_ports]; | |
58 | }; | |
59 | ||
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); | |
63 | ||
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 }, | |
68 | ||
69 | { } /* terminate list */ | |
70 | }; | |
71 | ||
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, | |
77 | }; | |
78 | ||
79 | static struct scsi_host_template uli_sht = { | |
80 | ATA_BMDMA_SHT(DRV_NAME), | |
81 | }; | |
82 | ||
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, | |
88 | }; | |
89 | ||
90 | static const struct ata_port_info uli_port_info = { | |
91 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | | |
92 | ATA_FLAG_IGN_SIMPLEX, | |
93 | .pio_mask = ATA_PIO4, | |
94 | .udma_mask = ATA_UDMA6, | |
95 | .port_ops = &uli_ops, | |
96 | }; | |
97 | ||
98 | ||
99 | MODULE_AUTHOR("Peer Chen"); | |
100 | MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller"); | |
101 | MODULE_LICENSE("GPL"); | |
102 | MODULE_DEVICE_TABLE(pci, uli_pci_tbl); | |
103 | MODULE_VERSION(DRV_VERSION); | |
104 | ||
105 | static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg) | |
106 | { | |
107 | struct uli_priv *hpriv = ap->host->private_data; | |
108 | return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg); | |
109 | } | |
110 | ||
111 | static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg) | |
112 | { | |
113 | struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); | |
114 | unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg); | |
115 | u32 val; | |
116 | ||
117 | pci_read_config_dword(pdev, cfg_addr, &val); | |
118 | return val; | |
119 | } | |
120 | ||
121 | static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val) | |
122 | { | |
123 | struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); | |
124 | unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr); | |
125 | ||
126 | pci_write_config_dword(pdev, cfg_addr, val); | |
127 | } | |
128 | ||
129 | static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val) | |
130 | { | |
131 | if (sc_reg > SCR_CONTROL) | |
132 | return -EINVAL; | |
133 | ||
134 | *val = uli_scr_cfg_read(link, sc_reg); | |
135 | return 0; | |
136 | } | |
137 | ||
138 | static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val) | |
139 | { | |
140 | if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0 | |
141 | return -EINVAL; | |
142 | ||
143 | uli_scr_cfg_write(link, sc_reg, val); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) | |
148 | { | |
149 | static int printed_version; | |
150 | const struct ata_port_info *ppi[] = { &uli_port_info, NULL }; | |
151 | unsigned int board_idx = (unsigned int) ent->driver_data; | |
152 | struct ata_host *host; | |
153 | struct uli_priv *hpriv; | |
154 | void __iomem * const *iomap; | |
155 | struct ata_ioports *ioaddr; | |
156 | int n_ports, rc; | |
157 | ||
158 | if (!printed_version++) | |
159 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); | |
160 | ||
161 | rc = pcim_enable_device(pdev); | |
162 | if (rc) | |
163 | return rc; | |
164 | ||
165 | n_ports = 2; | |
166 | if (board_idx == uli_5287) | |
167 | n_ports = 4; | |
168 | ||
169 | /* allocate the host */ | |
170 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
171 | if (!host) | |
172 | return -ENOMEM; | |
173 | ||
174 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
175 | if (!hpriv) | |
176 | return -ENOMEM; | |
177 | host->private_data = hpriv; | |
178 | ||
179 | /* the first two ports are standard SFF */ | |
180 | rc = ata_pci_sff_init_host(host); | |
181 | if (rc) | |
182 | return rc; | |
183 | ||
184 | ata_pci_bmdma_init(host); | |
185 | ||
186 | iomap = host->iomap; | |
187 | ||
188 | switch (board_idx) { | |
189 | case uli_5287: | |
190 | /* If there are four, the last two live right after | |
191 | * the standard SFF ports. | |
192 | */ | |
193 | hpriv->scr_cfg_addr[0] = ULI5287_BASE; | |
194 | hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; | |
195 | ||
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); | |
204 | ||
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); | |
210 | ||
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); | |
219 | ||
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); | |
225 | ||
226 | break; | |
227 | ||
228 | case uli_5289: | |
229 | hpriv->scr_cfg_addr[0] = ULI5287_BASE; | |
230 | hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; | |
231 | break; | |
232 | ||
233 | case uli_5281: | |
234 | hpriv->scr_cfg_addr[0] = ULI5281_BASE; | |
235 | hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS; | |
236 | break; | |
237 | ||
238 | default: | |
239 | BUG(); | |
240 | break; | |
241 | } | |
242 | ||
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); | |
247 | } | |
248 | ||
249 | static int __init uli_init(void) | |
250 | { | |
251 | return pci_register_driver(&uli_pci_driver); | |
252 | } | |
253 | ||
254 | static void __exit uli_exit(void) | |
255 | { | |
256 | pci_unregister_driver(&uli_pci_driver); | |
257 | } | |
258 | ||
259 | ||
260 | module_init(uli_init); | |
261 | module_exit(uli_exit); |