Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * generic/default IDE host driver | |
3 | * | |
52913ab2 | 4 | * Copyright (C) 2004, 2008-2009 Bartlomiej Zolnierkiewicz |
1da177e4 LT |
5 | * This code was split off from ide.c. See it for original copyrights. |
6 | * | |
7 | * May be copied or modified under the terms of the GNU General Public License. | |
8 | */ | |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/init.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/ide.h> | |
20df429d | 14 | #include <linux/pci_ids.h> |
1da177e4 | 15 | |
a687a533 | 16 | /* FIXME: convert arm to use ide_platform host driver */ |
4465461e BZ |
17 | #ifdef CONFIG_ARM |
18 | #include <asm/irq.h> | |
19 | #endif | |
f01d35d8 | 20 | |
f0298512 BZ |
21 | #define DRV_NAME "ide_generic" |
22 | ||
20df429d | 23 | static int probe_mask; |
0cbccbc3 BZ |
24 | module_param(probe_mask, int, 0); |
25 | MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports"); | |
26 | ||
e518e587 BZ |
27 | static const struct ide_port_info ide_generic_port_info = { |
28 | .host_flags = IDE_HFLAG_NO_DMA, | |
29e52cf7 | 29 | .chipset = ide_generic, |
e518e587 BZ |
30 | }; |
31 | ||
4465461e BZ |
32 | #ifdef CONFIG_ARM |
33 | static const u16 legacy_bases[] = { 0x1f0 }; | |
34 | static const int legacy_irqs[] = { IRQ_HARDDISK }; | |
f01d35d8 BZ |
35 | #elif defined(CONFIG_ALPHA) |
36 | static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 }; | |
37 | static const int legacy_irqs[] = { 14, 15, 11, 10 }; | |
38 | #else | |
39 | static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 }; | |
40 | static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 }; | |
41 | #endif | |
42 | ||
20df429d BP |
43 | static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary) |
44 | { | |
4465461e | 45 | #ifdef CONFIG_PCI |
20df429d BP |
46 | struct pci_dev *p = NULL; |
47 | u16 val; | |
48 | ||
49 | for_each_pci_dev(p) { | |
20df429d BP |
50 | if (pci_resource_start(p, 0) == 0x1f0) |
51 | *primary = 1; | |
52 | if (pci_resource_start(p, 2) == 0x170) | |
53 | *secondary = 1; | |
54 | ||
55 | /* Cyrix CS55{1,2}0 pre SFF MWDMA ATA on the bridge */ | |
56 | if (p->vendor == PCI_VENDOR_ID_CYRIX && | |
57 | (p->device == PCI_DEVICE_ID_CYRIX_5510 || | |
58 | p->device == PCI_DEVICE_ID_CYRIX_5520)) | |
59 | *primary = *secondary = 1; | |
60 | ||
61 | /* Intel MPIIX - PIO ATA on non PCI side of bridge */ | |
62 | if (p->vendor == PCI_VENDOR_ID_INTEL && | |
63 | p->device == PCI_DEVICE_ID_INTEL_82371MX) { | |
20df429d BP |
64 | pci_read_config_word(p, 0x6C, &val); |
65 | if (val & 0x8000) { | |
66 | /* ATA port enabled */ | |
67 | if (val & 0x4000) | |
68 | *secondary = 1; | |
69 | else | |
70 | *primary = 1; | |
71 | } | |
72 | } | |
73 | } | |
4465461e | 74 | #endif |
20df429d BP |
75 | } |
76 | ||
1da177e4 LT |
77 | static int __init ide_generic_init(void) |
78 | { | |
9f36d314 | 79 | struct ide_hw hw, *hws[] = { &hw }; |
8a69580e | 80 | unsigned long io_addr; |
6ccc6d7e | 81 | int i, rc = 0, primary = 0, secondary = 0; |
151575e4 | 82 | |
20df429d BP |
83 | ide_generic_check_pci_legacy_iobases(&primary, &secondary); |
84 | ||
85 | if (!probe_mask) { | |
86 | printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" " | |
87 | "module parameter for probing all legacy ISA IDE ports\n"); | |
88 | ||
89 | if (primary == 0) | |
90 | probe_mask |= 0x1; | |
91 | ||
92 | if (secondary == 0) | |
93 | probe_mask |= 0x2; | |
94 | } else | |
95 | printk(KERN_INFO DRV_NAME ": enforcing probing of I/O ports " | |
96 | "upon user request\n"); | |
0cbccbc3 | 97 | |
f01d35d8 BZ |
98 | for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) { |
99 | io_addr = legacy_bases[i]; | |
486c92e2 | 100 | |
0cbccbc3 | 101 | if ((probe_mask & (1 << i)) && io_addr) { |
16649498 BZ |
102 | if (!request_region(io_addr, 8, DRV_NAME)) { |
103 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX " | |
104 | "not free.\n", | |
105 | DRV_NAME, io_addr, io_addr + 7); | |
4465461e | 106 | rc = -EBUSY; |
16649498 BZ |
107 | continue; |
108 | } | |
109 | ||
110 | if (!request_region(io_addr + 0x206, 1, DRV_NAME)) { | |
111 | printk(KERN_ERR "%s: I/O resource 0x%lX " | |
112 | "not free.\n", | |
113 | DRV_NAME, io_addr + 0x206); | |
114 | release_region(io_addr, 8); | |
4465461e | 115 | rc = -EBUSY; |
16649498 BZ |
116 | continue; |
117 | } | |
118 | ||
6ccc6d7e BZ |
119 | memset(&hw, 0, sizeof(hw)); |
120 | ide_std_init_ports(&hw, io_addr, io_addr + 0x206); | |
f01d35d8 | 121 | #ifdef CONFIG_IA64 |
6ccc6d7e | 122 | hw.irq = isa_irq_to_vector(legacy_irqs[i]); |
f01d35d8 | 123 | #else |
6ccc6d7e | 124 | hw.irq = legacy_irqs[i]; |
f01d35d8 | 125 | #endif |
dca39830 | 126 | rc = ide_host_add(&ide_generic_port_info, hws, 1, NULL); |
6ccc6d7e BZ |
127 | if (rc) { |
128 | release_region(io_addr + 0x206, 1); | |
129 | release_region(io_addr, 8); | |
130 | } | |
16649498 | 131 | } |
b2a53bc6 | 132 | } |
151575e4 | 133 | |
8a69580e | 134 | return rc; |
1da177e4 LT |
135 | } |
136 | ||
137 | module_init(ide_generic_init); | |
138 | ||
139 | MODULE_LICENSE("GPL"); |