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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 | * | |
49521f97 | 28 | * Returns the cable type. |
bbb3bbdb AC |
29 | */ |
30 | ||
49521f97 | 31 | static u8 __devinit ata66_jmicron(ide_hwif_t *hwif) |
bbb3bbdb AC |
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 */ | |
49521f97 BZ |
73 | return ATA_CBL_PATA40; |
74 | return ATA_CBL_PATA80; | |
bbb3bbdb AC |
75 | case PORT_PATA1: |
76 | if (control5 & (1 << 19)) /* 40/80 pin secondary */ | |
49521f97 BZ |
77 | return ATA_CBL_PATA40; |
78 | return ATA_CBL_PATA80; | |
bbb3bbdb | 79 | case PORT_SATA: |
a51545ab | 80 | break; |
bbb3bbdb | 81 | } |
49521f97 BZ |
82 | /* Avoid bogus "control reaches end of non-void function" */ |
83 | return ATA_CBL_PATA80; | |
bbb3bbdb AC |
84 | } |
85 | ||
26bcb879 | 86 | static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio) |
bbb3bbdb | 87 | { |
8b6b33be | 88 | ide_config_drive_speed(drive, XFER_PIO_0 + pio); |
bbb3bbdb AC |
89 | } |
90 | ||
91 | /** | |
92 | * jmicron_tune_chipset - set controller timings | |
93 | * @drive: Drive to set up | |
f212ff28 | 94 | * @speed: speed we want to achieve |
bbb3bbdb AC |
95 | * |
96 | * As the JMicron snoops for timings all we actually need to do is | |
f212ff28 | 97 | * set the transfer mode on the device. |
bbb3bbdb AC |
98 | */ |
99 | ||
f212ff28 | 100 | static int jmicron_tune_chipset(ide_drive_t *drive, const u8 speed) |
bbb3bbdb | 101 | { |
bbb3bbdb AC |
102 | return ide_config_drive_speed(drive, speed); |
103 | } | |
104 | ||
bbb3bbdb AC |
105 | /** |
106 | * jmicron_configure_drive_for_dma - set up for DMA transfers | |
107 | * @drive: drive we are going to set up | |
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. | |
111 | */ | |
112 | ||
113 | static int jmicron_config_drive_for_dma (ide_drive_t *drive) | |
114 | { | |
29e744d0 | 115 | if (ide_tune_dma(drive)) |
3608b5d7 | 116 | return 0; |
bbb3bbdb | 117 | |
26bcb879 | 118 | ide_set_max_pio(drive); |
3608b5d7 BZ |
119 | |
120 | return -1; | |
bbb3bbdb AC |
121 | } |
122 | ||
123 | /** | |
124 | * init_hwif_jmicron - set up hwif structs | |
125 | * @hwif: interface to set up | |
126 | * | |
127 | * Minimal set up is required for the Jmicron hardware. | |
128 | */ | |
129 | ||
130 | static void __devinit init_hwif_jmicron(ide_hwif_t *hwif) | |
131 | { | |
132 | hwif->speedproc = &jmicron_tune_chipset; | |
26bcb879 | 133 | hwif->set_pio_mode = &jmicron_set_pio_mode; |
bbb3bbdb AC |
134 | |
135 | hwif->drives[0].autotune = 1; | |
136 | hwif->drives[1].autotune = 1; | |
137 | ||
138 | if (!hwif->dma_base) | |
139 | goto fallback; | |
140 | ||
141 | hwif->atapi_dma = 1; | |
142 | hwif->ultra_mask = 0x7f; | |
143 | hwif->mwdma_mask = 0x07; | |
144 | ||
145 | hwif->ide_dma_check = &jmicron_config_drive_for_dma; | |
49521f97 BZ |
146 | |
147 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) | |
148 | hwif->cbl = ata66_jmicron(hwif); | |
bbb3bbdb AC |
149 | |
150 | hwif->autodma = 1; | |
151 | hwif->drives[0].autodma = hwif->autodma; | |
152 | hwif->drives[1].autodma = hwif->autodma; | |
153 | return; | |
154 | fallback: | |
155 | hwif->autodma = 0; | |
156 | return; | |
157 | } | |
158 | ||
bda7970c TH |
159 | static ide_pci_device_t jmicron_chipset __devinitdata = { |
160 | .name = "JMB", | |
161 | .init_hwif = init_hwif_jmicron, | |
162 | .autodma = AUTODMA, | |
163 | .bootable = ON_BOARD, | |
164 | .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, | |
165 | .pio_mask = ATA_PIO5, | |
bbb3bbdb AC |
166 | }; |
167 | ||
168 | /** | |
169 | * jmicron_init_one - pci layer discovery entry | |
170 | * @dev: PCI device | |
171 | * @id: ident table entry | |
172 | * | |
173 | * Called by the PCI code when it finds a Jmicron controller. | |
174 | * We then use the IDE PCI generic helper to do most of the work. | |
175 | */ | |
176 | ||
177 | static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
178 | { | |
bda7970c | 179 | ide_setup_pci_device(dev, &jmicron_chipset); |
bbb3bbdb AC |
180 | return 0; |
181 | } | |
182 | ||
bda7970c TH |
183 | /* All JMB PATA controllers have and will continue to have the same |
184 | * interface. Matching vendor and device class is enough for all | |
185 | * current and future controllers if the controller is programmed | |
186 | * properly. | |
187 | * | |
188 | * If libata is configured, jmicron PCI quirk programs the controller | |
189 | * into the correct mode. If libata isn't configured, match known | |
190 | * device IDs too to maintain backward compatibility. | |
ebbc2031 | 191 | */ |
bbb3bbdb | 192 | static struct pci_device_id jmicron_pci_tbl[] = { |
bda7970c TH |
193 | #if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE) |
194 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) }, | |
195 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) }, | |
196 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) }, | |
197 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) }, | |
198 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) }, | |
199 | #endif | |
200 | { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, | |
201 | PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 }, | |
bbb3bbdb AC |
202 | { 0, }, |
203 | }; | |
204 | ||
205 | MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl); | |
206 | ||
207 | static struct pci_driver driver = { | |
208 | .name = "JMicron IDE", | |
209 | .id_table = jmicron_pci_tbl, | |
210 | .probe = jmicron_init_one, | |
211 | }; | |
212 | ||
213 | static int __init jmicron_ide_init(void) | |
214 | { | |
215 | return ide_pci_register_driver(&driver); | |
216 | } | |
217 | ||
218 | module_init(jmicron_ide_init); | |
219 | ||
220 | MODULE_AUTHOR("Alan Cox"); | |
221 | MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes"); | |
222 | MODULE_LICENSE("GPL"); |