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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> | |
bbb3bbdb AC |
11 | #include <linux/hdreg.h> |
12 | #include <linux/ide.h> | |
13 | #include <linux/init.h> | |
14 | ||
bbb3bbdb AC |
15 | typedef enum { |
16 | PORT_PATA0 = 0, | |
17 | PORT_PATA1 = 1, | |
18 | PORT_SATA = 2, | |
19 | } port_type; | |
20 | ||
bbb3bbdb AC |
21 | /** |
22 | * ata66_jmicron - Cable check | |
23 | * @hwif: IDE port | |
24 | * | |
49521f97 | 25 | * Returns the cable type. |
bbb3bbdb AC |
26 | */ |
27 | ||
49521f97 | 28 | static u8 __devinit ata66_jmicron(ide_hwif_t *hwif) |
bbb3bbdb | 29 | { |
36501650 | 30 | struct pci_dev *pdev = to_pci_dev(hwif->dev); |
bbb3bbdb AC |
31 | |
32 | u32 control; | |
33 | u32 control5; | |
34 | ||
35 | int port = hwif->channel; | |
36 | port_type port_map[2]; | |
37 | ||
38 | pci_read_config_dword(pdev, 0x40, &control); | |
39 | ||
40 | /* There are two basic mappings. One has the two SATA ports merged | |
41 | as master/slave and the secondary as PATA, the other has only the | |
42 | SATA port mapped */ | |
43 | if (control & (1 << 23)) { | |
44 | port_map[0] = PORT_SATA; | |
45 | port_map[1] = PORT_PATA0; | |
46 | } else { | |
47 | port_map[0] = PORT_SATA; | |
48 | port_map[1] = PORT_SATA; | |
49 | } | |
50 | ||
51 | /* The 365/366 may have this bit set to map the second PATA port | |
52 | as the internal primary channel */ | |
53 | pci_read_config_dword(pdev, 0x80, &control5); | |
54 | if (control5 & (1<<24)) | |
55 | port_map[0] = PORT_PATA1; | |
56 | ||
57 | /* The two ports may then be logically swapped by the firmware */ | |
58 | if (control & (1 << 22)) | |
59 | port = port ^ 1; | |
60 | ||
61 | /* | |
62 | * Now we know which physical port we are talking about we can | |
63 | * actually do our cable checking etc. Thankfully we don't need | |
64 | * to do the plumbing for other cases. | |
65 | */ | |
66 | switch (port_map[port]) | |
67 | { | |
68 | case PORT_PATA0: | |
69 | if (control & (1 << 3)) /* 40/80 pin primary */ | |
49521f97 BZ |
70 | return ATA_CBL_PATA40; |
71 | return ATA_CBL_PATA80; | |
bbb3bbdb AC |
72 | case PORT_PATA1: |
73 | if (control5 & (1 << 19)) /* 40/80 pin secondary */ | |
49521f97 BZ |
74 | return ATA_CBL_PATA40; |
75 | return ATA_CBL_PATA80; | |
bbb3bbdb | 76 | case PORT_SATA: |
a51545ab | 77 | break; |
bbb3bbdb | 78 | } |
49521f97 BZ |
79 | /* Avoid bogus "control reaches end of non-void function" */ |
80 | return ATA_CBL_PATA80; | |
bbb3bbdb AC |
81 | } |
82 | ||
26bcb879 | 83 | static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio) |
bbb3bbdb | 84 | { |
bbb3bbdb AC |
85 | } |
86 | ||
87 | /** | |
88b2b32b BZ |
88 | * jmicron_set_dma_mode - set host controller for DMA mode |
89 | * @drive: drive | |
90 | * @mode: DMA mode | |
bbb3bbdb | 91 | * |
88b2b32b | 92 | * As the JMicron snoops for timings we don't need to do anything here. |
bbb3bbdb AC |
93 | */ |
94 | ||
88b2b32b | 95 | static void jmicron_set_dma_mode(ide_drive_t *drive, const u8 mode) |
bbb3bbdb | 96 | { |
bbb3bbdb AC |
97 | } |
98 | ||
bbb3bbdb AC |
99 | /** |
100 | * init_hwif_jmicron - set up hwif structs | |
101 | * @hwif: interface to set up | |
102 | * | |
103 | * Minimal set up is required for the Jmicron hardware. | |
104 | */ | |
105 | ||
106 | static void __devinit init_hwif_jmicron(ide_hwif_t *hwif) | |
107 | { | |
26bcb879 | 108 | hwif->set_pio_mode = &jmicron_set_pio_mode; |
88b2b32b | 109 | hwif->set_dma_mode = &jmicron_set_dma_mode; |
bbb3bbdb | 110 | |
bfa14b42 | 111 | hwif->cable_detect = ata66_jmicron; |
bbb3bbdb AC |
112 | } |
113 | ||
85620436 | 114 | static const struct ide_port_info jmicron_chipset __devinitdata = { |
bda7970c TH |
115 | .name = "JMB", |
116 | .init_hwif = init_hwif_jmicron, | |
bda7970c TH |
117 | .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, |
118 | .pio_mask = ATA_PIO5, | |
5f8b6c34 BZ |
119 | .mwdma_mask = ATA_MWDMA2, |
120 | .udma_mask = ATA_UDMA6, | |
bbb3bbdb AC |
121 | }; |
122 | ||
123 | /** | |
124 | * jmicron_init_one - pci layer discovery entry | |
125 | * @dev: PCI device | |
126 | * @id: ident table entry | |
127 | * | |
128 | * Called by the PCI code when it finds a Jmicron controller. | |
129 | * We then use the IDE PCI generic helper to do most of the work. | |
130 | */ | |
131 | ||
132 | static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
133 | { | |
24ffbd62 | 134 | return ide_setup_pci_device(dev, &jmicron_chipset); |
bbb3bbdb AC |
135 | } |
136 | ||
bda7970c TH |
137 | /* All JMB PATA controllers have and will continue to have the same |
138 | * interface. Matching vendor and device class is enough for all | |
139 | * current and future controllers if the controller is programmed | |
140 | * properly. | |
141 | * | |
142 | * If libata is configured, jmicron PCI quirk programs the controller | |
143 | * into the correct mode. If libata isn't configured, match known | |
144 | * device IDs too to maintain backward compatibility. | |
ebbc2031 | 145 | */ |
bbb3bbdb | 146 | static struct pci_device_id jmicron_pci_tbl[] = { |
bda7970c TH |
147 | #if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE) |
148 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) }, | |
149 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) }, | |
150 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) }, | |
151 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) }, | |
152 | { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) }, | |
153 | #endif | |
154 | { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, | |
155 | PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 }, | |
bbb3bbdb AC |
156 | { 0, }, |
157 | }; | |
158 | ||
159 | MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl); | |
160 | ||
161 | static struct pci_driver driver = { | |
162 | .name = "JMicron IDE", | |
163 | .id_table = jmicron_pci_tbl, | |
164 | .probe = jmicron_init_one, | |
165 | }; | |
166 | ||
167 | static int __init jmicron_ide_init(void) | |
168 | { | |
169 | return ide_pci_register_driver(&driver); | |
170 | } | |
171 | ||
172 | module_init(jmicron_ide_init); | |
173 | ||
174 | MODULE_AUTHOR("Alan Cox"); | |
175 | MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes"); | |
176 | MODULE_LICENSE("GPL"); |