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bbb3bbdb AC |
1 | |
2 | /* | |
3 | * Copyright (C) 2006 Red Hat <alan@redhat.com> | |
4 | * | |
5 | * May be copied or modified under the terms of the GNU General Public License | |
6 | */ | |
7 | ||
bbb3bbdb AC |
8 | #include <linux/types.h> |
9 | #include <linux/module.h> | |
10 | #include <linux/pci.h> | |
11 | #include <linux/delay.h> | |
12 | #include <linux/hdreg.h> | |
13 | #include <linux/ide.h> | |
14 | #include <linux/init.h> | |
15 | ||
16 | #include <asm/io.h> | |
17 | ||
18 | typedef enum { | |
19 | PORT_PATA0 = 0, | |
20 | PORT_PATA1 = 1, | |
21 | PORT_SATA = 2, | |
22 | } port_type; | |
23 | ||
bbb3bbdb AC |
24 | /** |
25 | * ata66_jmicron - Cable check | |
26 | * @hwif: IDE port | |
27 | * | |
28 | * Return 1 if the cable is 80pin | |
29 | */ | |
30 | ||
31 | static int __devinit ata66_jmicron(ide_hwif_t *hwif) | |
32 | { | |
33 | struct pci_dev *pdev = hwif->pci_dev; | |
34 | ||
35 | u32 control; | |
36 | u32 control5; | |
37 | ||
38 | int port = hwif->channel; | |
39 | port_type port_map[2]; | |
40 | ||
41 | pci_read_config_dword(pdev, 0x40, &control); | |
42 | ||
43 | /* There are two basic mappings. One has the two SATA ports merged | |
44 | as master/slave and the secondary as PATA, the other has only the | |
45 | SATA port mapped */ | |
46 | if (control & (1 << 23)) { | |
47 | port_map[0] = PORT_SATA; | |
48 | port_map[1] = PORT_PATA0; | |
49 | } else { | |
50 | port_map[0] = PORT_SATA; | |
51 | port_map[1] = PORT_SATA; | |
52 | } | |
53 | ||
54 | /* The 365/366 may have this bit set to map the second PATA port | |
55 | as the internal primary channel */ | |
56 | pci_read_config_dword(pdev, 0x80, &control5); | |
57 | if (control5 & (1<<24)) | |
58 | port_map[0] = PORT_PATA1; | |
59 | ||
60 | /* The two ports may then be logically swapped by the firmware */ | |
61 | if (control & (1 << 22)) | |
62 | port = port ^ 1; | |
63 | ||
64 | /* | |
65 | * Now we know which physical port we are talking about we can | |
66 | * actually do our cable checking etc. Thankfully we don't need | |
67 | * to do the plumbing for other cases. | |
68 | */ | |
69 | switch (port_map[port]) | |
70 | { | |
71 | case PORT_PATA0: | |
72 | if (control & (1 << 3)) /* 40/80 pin primary */ | |
99abaf51 | 73 | return 0; |
74 | return 1; | |
bbb3bbdb AC |
75 | case PORT_PATA1: |
76 | if (control5 & (1 << 19)) /* 40/80 pin secondary */ | |
77 | return 0; | |
78 | return 1; | |
79 | case PORT_SATA: | |
a51545ab | 80 | break; |
bbb3bbdb | 81 | } |
a51545ab | 82 | return 1; /* Avoid bogus "control reaches end of non-void function" */ |
bbb3bbdb AC |
83 | } |
84 | ||
85 | static void jmicron_tuneproc (ide_drive_t *drive, byte mode_wanted) | |
86 | { | |
87 | return; | |
88 | } | |
89 | ||
90 | /** | |
91 | * config_jmicron_chipset_for_pio - set drive timings | |
92 | * @drive: drive to tune | |
93 | * @speed we want | |
94 | * | |
95 | */ | |
96 | ||
97 | static void config_jmicron_chipset_for_pio (ide_drive_t *drive, byte set_speed) | |
98 | { | |
99 | u8 speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL); | |
100 | if (set_speed) | |
101 | (void) ide_config_drive_speed(drive, speed); | |
102 | } | |
103 | ||
104 | /** | |
105 | * jmicron_tune_chipset - set controller timings | |
106 | * @drive: Drive to set up | |
107 | * @xferspeed: speed we want to achieve | |
108 | * | |
109 | * As the JMicron snoops for timings all we actually need to do is | |
110 | * make sure we don't set an invalid mode. We do need to honour | |
111 | * the cable detect here. | |
112 | */ | |
113 | ||
114 | static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed) | |
115 | { | |
2d5eaa6d | 116 | u8 speed = ide_rate_filter(drive, xferspeed); |
bbb3bbdb AC |
117 | |
118 | return ide_config_drive_speed(drive, speed); | |
119 | } | |
120 | ||
bbb3bbdb AC |
121 | /** |
122 | * jmicron_configure_drive_for_dma - set up for DMA transfers | |
123 | * @drive: drive we are going to set up | |
124 | * | |
125 | * As the JMicron snoops for timings all we actually need to do is | |
126 | * make sure we don't set an invalid mode. | |
127 | */ | |
128 | ||
129 | static int jmicron_config_drive_for_dma (ide_drive_t *drive) | |
130 | { | |
29e744d0 | 131 | if (ide_tune_dma(drive)) |
3608b5d7 | 132 | return 0; |
bbb3bbdb | 133 | |
bbb3bbdb | 134 | config_jmicron_chipset_for_pio(drive, 1); |
3608b5d7 BZ |
135 | |
136 | return -1; | |
bbb3bbdb AC |
137 | } |
138 | ||
139 | /** | |
140 | * init_hwif_jmicron - set up hwif structs | |
141 | * @hwif: interface to set up | |
142 | * | |
143 | * Minimal set up is required for the Jmicron hardware. | |
144 | */ | |
145 | ||
146 | static void __devinit init_hwif_jmicron(ide_hwif_t *hwif) | |
147 | { | |
148 | hwif->speedproc = &jmicron_tune_chipset; | |
149 | hwif->tuneproc = &jmicron_tuneproc; | |
150 | ||
151 | hwif->drives[0].autotune = 1; | |
152 | hwif->drives[1].autotune = 1; | |
153 | ||
154 | if (!hwif->dma_base) | |
155 | goto fallback; | |
156 | ||
157 | hwif->atapi_dma = 1; | |
158 | hwif->ultra_mask = 0x7f; | |
159 | hwif->mwdma_mask = 0x07; | |
160 | ||
161 | hwif->ide_dma_check = &jmicron_config_drive_for_dma; | |
162 | if (!(hwif->udma_four)) | |
163 | hwif->udma_four = ata66_jmicron(hwif); | |
164 | ||
165 | hwif->autodma = 1; | |
166 | hwif->drives[0].autodma = hwif->autodma; | |
167 | hwif->drives[1].autodma = hwif->autodma; | |
168 | return; | |
169 | fallback: | |
170 | hwif->autodma = 0; | |
171 | return; | |
172 | } | |
173 | ||
174 | #define DECLARE_JMB_DEV(name_str) \ | |
175 | { \ | |
176 | .name = name_str, \ | |
177 | .init_hwif = init_hwif_jmicron, \ | |
178 | .channels = 2, \ | |
179 | .autodma = AUTODMA, \ | |
180 | .bootable = ON_BOARD, \ | |
181 | .enablebits = { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \ | |
182 | } | |
183 | ||
184 | static ide_pci_device_t jmicron_chipsets[] __devinitdata = { | |
185 | /* 0 */ DECLARE_JMB_DEV("JMB361"), | |
186 | /* 1 */ DECLARE_JMB_DEV("JMB363"), | |
187 | /* 2 */ DECLARE_JMB_DEV("JMB365"), | |
188 | /* 3 */ DECLARE_JMB_DEV("JMB366"), | |
189 | /* 4 */ DECLARE_JMB_DEV("JMB368"), | |
190 | }; | |
191 | ||
192 | /** | |
193 | * jmicron_init_one - pci layer discovery entry | |
194 | * @dev: PCI device | |
195 | * @id: ident table entry | |
196 | * | |
197 | * Called by the PCI code when it finds a Jmicron controller. | |
198 | * We then use the IDE PCI generic helper to do most of the work. | |
199 | */ | |
200 | ||
201 | static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
202 | { | |
203 | ide_setup_pci_device(dev, &jmicron_chipsets[id->driver_data]); | |
204 | return 0; | |
205 | } | |
206 | ||
ebbc2031 TH |
207 | /* If libata is configured, jmicron PCI quirk will configure it such |
208 | * that the SATA ports are in AHCI function while the PATA ports are | |
209 | * in a separate IDE function. In such cases, match device class and | |
210 | * attach only to IDE. If libata isn't configured, keep the old | |
211 | * behavior for backward compatibility. | |
212 | */ | |
213 | #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) | |
214 | #define JMB_CLASS PCI_CLASS_STORAGE_IDE << 8 | |
215 | #define JMB_CLASS_MASK 0xffff00 | |
216 | #else | |
217 | #define JMB_CLASS 0 | |
218 | #define JMB_CLASS_MASK 0 | |
219 | #endif | |
220 | ||
bbb3bbdb | 221 | static struct pci_device_id jmicron_pci_tbl[] = { |
ebbc2031 TH |
222 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, |
223 | PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 0}, | |
224 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, | |
225 | PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 1}, | |
226 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, | |
227 | PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 2}, | |
228 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, | |
229 | PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 3}, | |
230 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, | |
231 | PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 4}, | |
bbb3bbdb AC |
232 | { 0, }, |
233 | }; | |
234 | ||
235 | MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl); | |
236 | ||
237 | static struct pci_driver driver = { | |
238 | .name = "JMicron IDE", | |
239 | .id_table = jmicron_pci_tbl, | |
240 | .probe = jmicron_init_one, | |
241 | }; | |
242 | ||
243 | static int __init jmicron_ide_init(void) | |
244 | { | |
245 | return ide_pci_register_driver(&driver); | |
246 | } | |
247 | ||
248 | module_init(jmicron_ide_init); | |
249 | ||
250 | MODULE_AUTHOR("Alan Cox"); | |
251 | MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes"); | |
252 | MODULE_LICENSE("GPL"); |