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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 | ||
24 | /** | |
25 | * jmicron_ratemask - Compute available modes | |
26 | * @drive: IDE drive | |
27 | * | |
28 | * Compute the available speeds for the devices on the interface. This | |
29 | * is all modes to ATA133 clipped by drive cable setup. | |
30 | */ | |
31 | ||
32 | static u8 jmicron_ratemask(ide_drive_t *drive) | |
33 | { | |
34 | u8 mode = 4; | |
35 | if (!eighty_ninty_three(drive)) | |
36 | mode = min(mode, (u8)1); | |
37 | return mode; | |
38 | } | |
39 | ||
40 | /** | |
41 | * ata66_jmicron - Cable check | |
42 | * @hwif: IDE port | |
43 | * | |
44 | * Return 1 if the cable is 80pin | |
45 | */ | |
46 | ||
47 | static int __devinit ata66_jmicron(ide_hwif_t *hwif) | |
48 | { | |
49 | struct pci_dev *pdev = hwif->pci_dev; | |
50 | ||
51 | u32 control; | |
52 | u32 control5; | |
53 | ||
54 | int port = hwif->channel; | |
55 | port_type port_map[2]; | |
56 | ||
57 | pci_read_config_dword(pdev, 0x40, &control); | |
58 | ||
59 | /* There are two basic mappings. One has the two SATA ports merged | |
60 | as master/slave and the secondary as PATA, the other has only the | |
61 | SATA port mapped */ | |
62 | if (control & (1 << 23)) { | |
63 | port_map[0] = PORT_SATA; | |
64 | port_map[1] = PORT_PATA0; | |
65 | } else { | |
66 | port_map[0] = PORT_SATA; | |
67 | port_map[1] = PORT_SATA; | |
68 | } | |
69 | ||
70 | /* The 365/366 may have this bit set to map the second PATA port | |
71 | as the internal primary channel */ | |
72 | pci_read_config_dword(pdev, 0x80, &control5); | |
73 | if (control5 & (1<<24)) | |
74 | port_map[0] = PORT_PATA1; | |
75 | ||
76 | /* The two ports may then be logically swapped by the firmware */ | |
77 | if (control & (1 << 22)) | |
78 | port = port ^ 1; | |
79 | ||
80 | /* | |
81 | * Now we know which physical port we are talking about we can | |
82 | * actually do our cable checking etc. Thankfully we don't need | |
83 | * to do the plumbing for other cases. | |
84 | */ | |
85 | switch (port_map[port]) | |
86 | { | |
87 | case PORT_PATA0: | |
88 | if (control & (1 << 3)) /* 40/80 pin primary */ | |
99abaf51 | 89 | return 0; |
90 | return 1; | |
bbb3bbdb AC |
91 | case PORT_PATA1: |
92 | if (control5 & (1 << 19)) /* 40/80 pin secondary */ | |
93 | return 0; | |
94 | return 1; | |
95 | case PORT_SATA: | |
a51545ab | 96 | break; |
bbb3bbdb | 97 | } |
a51545ab | 98 | return 1; /* Avoid bogus "control reaches end of non-void function" */ |
bbb3bbdb AC |
99 | } |
100 | ||
101 | static void jmicron_tuneproc (ide_drive_t *drive, byte mode_wanted) | |
102 | { | |
103 | return; | |
104 | } | |
105 | ||
106 | /** | |
107 | * config_jmicron_chipset_for_pio - set drive timings | |
108 | * @drive: drive to tune | |
109 | * @speed we want | |
110 | * | |
111 | */ | |
112 | ||
113 | static void config_jmicron_chipset_for_pio (ide_drive_t *drive, byte set_speed) | |
114 | { | |
115 | u8 speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL); | |
116 | if (set_speed) | |
117 | (void) ide_config_drive_speed(drive, speed); | |
118 | } | |
119 | ||
120 | /** | |
121 | * jmicron_tune_chipset - set controller timings | |
122 | * @drive: Drive to set up | |
123 | * @xferspeed: speed we want to achieve | |
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. We do need to honour | |
127 | * the cable detect here. | |
128 | */ | |
129 | ||
130 | static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed) | |
131 | { | |
132 | ||
133 | u8 speed = ide_rate_filter(jmicron_ratemask(drive), xferspeed); | |
134 | ||
135 | return ide_config_drive_speed(drive, speed); | |
136 | } | |
137 | ||
138 | /** | |
139 | * config_chipset_for_dma - configure for DMA | |
140 | * @drive: drive to configure | |
141 | * | |
142 | * As the JMicron snoops for timings all we actually need to do is | |
143 | * make sure we don't set an invalid mode. | |
144 | */ | |
145 | ||
146 | static int config_chipset_for_dma (ide_drive_t *drive) | |
147 | { | |
148 | u8 speed = ide_dma_speed(drive, jmicron_ratemask(drive)); | |
149 | ||
150 | config_jmicron_chipset_for_pio(drive, !speed); | |
151 | jmicron_tune_chipset(drive, speed); | |
152 | return ide_dma_enable(drive); | |
153 | } | |
154 | ||
155 | /** | |
156 | * jmicron_configure_drive_for_dma - set up for DMA transfers | |
157 | * @drive: drive we are going to set up | |
158 | * | |
159 | * As the JMicron snoops for timings all we actually need to do is | |
160 | * make sure we don't set an invalid mode. | |
161 | */ | |
162 | ||
163 | static int jmicron_config_drive_for_dma (ide_drive_t *drive) | |
164 | { | |
165 | ide_hwif_t *hwif = drive->hwif; | |
166 | ||
167 | if (ide_use_dma(drive)) { | |
168 | if (config_chipset_for_dma(drive)) | |
169 | return hwif->ide_dma_on(drive); | |
170 | } | |
171 | config_jmicron_chipset_for_pio(drive, 1); | |
172 | return hwif->ide_dma_off_quietly(drive); | |
173 | } | |
174 | ||
175 | /** | |
176 | * init_hwif_jmicron - set up hwif structs | |
177 | * @hwif: interface to set up | |
178 | * | |
179 | * Minimal set up is required for the Jmicron hardware. | |
180 | */ | |
181 | ||
182 | static void __devinit init_hwif_jmicron(ide_hwif_t *hwif) | |
183 | { | |
184 | hwif->speedproc = &jmicron_tune_chipset; | |
185 | hwif->tuneproc = &jmicron_tuneproc; | |
186 | ||
187 | hwif->drives[0].autotune = 1; | |
188 | hwif->drives[1].autotune = 1; | |
189 | ||
190 | if (!hwif->dma_base) | |
191 | goto fallback; | |
192 | ||
193 | hwif->atapi_dma = 1; | |
194 | hwif->ultra_mask = 0x7f; | |
195 | hwif->mwdma_mask = 0x07; | |
196 | ||
197 | hwif->ide_dma_check = &jmicron_config_drive_for_dma; | |
198 | if (!(hwif->udma_four)) | |
199 | hwif->udma_four = ata66_jmicron(hwif); | |
200 | ||
201 | hwif->autodma = 1; | |
202 | hwif->drives[0].autodma = hwif->autodma; | |
203 | hwif->drives[1].autodma = hwif->autodma; | |
204 | return; | |
205 | fallback: | |
206 | hwif->autodma = 0; | |
207 | return; | |
208 | } | |
209 | ||
210 | #define DECLARE_JMB_DEV(name_str) \ | |
211 | { \ | |
212 | .name = name_str, \ | |
213 | .init_hwif = init_hwif_jmicron, \ | |
214 | .channels = 2, \ | |
215 | .autodma = AUTODMA, \ | |
216 | .bootable = ON_BOARD, \ | |
217 | .enablebits = { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \ | |
218 | } | |
219 | ||
220 | static ide_pci_device_t jmicron_chipsets[] __devinitdata = { | |
221 | /* 0 */ DECLARE_JMB_DEV("JMB361"), | |
222 | /* 1 */ DECLARE_JMB_DEV("JMB363"), | |
223 | /* 2 */ DECLARE_JMB_DEV("JMB365"), | |
224 | /* 3 */ DECLARE_JMB_DEV("JMB366"), | |
225 | /* 4 */ DECLARE_JMB_DEV("JMB368"), | |
226 | }; | |
227 | ||
228 | /** | |
229 | * jmicron_init_one - pci layer discovery entry | |
230 | * @dev: PCI device | |
231 | * @id: ident table entry | |
232 | * | |
233 | * Called by the PCI code when it finds a Jmicron controller. | |
234 | * We then use the IDE PCI generic helper to do most of the work. | |
235 | */ | |
236 | ||
237 | static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
238 | { | |
239 | ide_setup_pci_device(dev, &jmicron_chipsets[id->driver_data]); | |
240 | return 0; | |
241 | } | |
242 | ||
243 | static struct pci_device_id jmicron_pci_tbl[] = { | |
99abaf51 | 244 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
245 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, | |
246 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2}, | |
247 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3}, | |
248 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, | |
bbb3bbdb AC |
249 | { 0, }, |
250 | }; | |
251 | ||
252 | MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl); | |
253 | ||
254 | static struct pci_driver driver = { | |
255 | .name = "JMicron IDE", | |
256 | .id_table = jmicron_pci_tbl, | |
257 | .probe = jmicron_init_one, | |
258 | }; | |
259 | ||
260 | static int __init jmicron_ide_init(void) | |
261 | { | |
262 | return ide_pci_register_driver(&driver); | |
263 | } | |
264 | ||
265 | module_init(jmicron_ide_init); | |
266 | ||
267 | MODULE_AUTHOR("Alan Cox"); | |
268 | MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes"); | |
269 | MODULE_LICENSE("GPL"); |