Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * This file contains quirk handling code for PnP devices | |
3 | * Some devices do not report all their resources, and need to have extra | |
4 | * resources added. This is most easily accomplished at initialisation time | |
5 | * when building up the resource structure for the first time. | |
6 | * | |
7 | * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk> | |
8 | * | |
9 | * Heavily based on PCI quirks handling which is | |
10 | * | |
11 | * Copyright (c) 1999 Martin Mares <mj@ucw.cz> | |
12 | */ | |
13 | ||
1da177e4 LT |
14 | #include <linux/types.h> |
15 | #include <linux/kernel.h> | |
16 | #include <linux/string.h> | |
17 | #include <linux/slab.h> | |
1da177e4 | 18 | #include <linux/pnp.h> |
a1e7e636 | 19 | #include <linux/io.h> |
a05d0781 | 20 | #include <linux/kallsyms.h> |
1da177e4 LT |
21 | #include "base.h" |
22 | ||
1da177e4 LT |
23 | static void quirk_awe32_resources(struct pnp_dev *dev) |
24 | { | |
25 | struct pnp_port *port, *port2, *port3; | |
26 | struct pnp_option *res = dev->dependent; | |
27 | ||
28 | /* | |
29 | * Unfortunately the isapnp_add_port_resource is too tightly bound | |
30 | * into the PnP discovery sequence, and cannot be used. Link in the | |
31 | * two extra ports (at offset 0x400 and 0x800 from the one given) by | |
32 | * hand. | |
33 | */ | |
9dd78466 | 34 | for (; res; res = res->next) { |
1da177e4 LT |
35 | port2 = pnp_alloc(sizeof(struct pnp_port)); |
36 | if (!port2) | |
37 | return; | |
38 | port3 = pnp_alloc(sizeof(struct pnp_port)); | |
39 | if (!port3) { | |
40 | kfree(port2); | |
41 | return; | |
42 | } | |
43 | port = res->port; | |
44 | memcpy(port2, port, sizeof(struct pnp_port)); | |
45 | memcpy(port3, port, sizeof(struct pnp_port)); | |
46 | port->next = port2; | |
47 | port2->next = port3; | |
48 | port2->min += 0x400; | |
49 | port2->max += 0x400; | |
50 | port3->min += 0x800; | |
51 | port3->max += 0x800; | |
52 | } | |
53 | printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n"); | |
54 | } | |
55 | ||
56 | static void quirk_cmi8330_resources(struct pnp_dev *dev) | |
57 | { | |
58 | struct pnp_option *res = dev->dependent; | |
59 | unsigned long tmp; | |
60 | ||
9dd78466 | 61 | for (; res; res = res->next) { |
1da177e4 LT |
62 | |
63 | struct pnp_irq *irq; | |
64 | struct pnp_dma *dma; | |
65 | ||
9dd78466 | 66 | for (irq = res->irq; irq; irq = irq->next) { // Valid irqs are 5, 7, 10 |
1da177e4 LT |
67 | tmp = 0x04A0; |
68 | bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000 | |
69 | } | |
70 | ||
9dd78466 BH |
71 | for (dma = res->dma; dma; dma = dma->next) // Valid 8bit dma channels are 1,3 |
72 | if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) == | |
73 | IORESOURCE_DMA_8BIT) | |
1da177e4 LT |
74 | dma->map = 0x000A; |
75 | } | |
76 | printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n"); | |
77 | } | |
78 | ||
79 | static void quirk_sb16audio_resources(struct pnp_dev *dev) | |
80 | { | |
81 | struct pnp_port *port; | |
82 | struct pnp_option *res = dev->dependent; | |
9dd78466 | 83 | int changed = 0; |
1da177e4 LT |
84 | |
85 | /* | |
86 | * The default range on the mpu port for these devices is 0x388-0x388. | |
87 | * Here we increase that range so that two such cards can be | |
88 | * auto-configured. | |
89 | */ | |
90 | ||
9dd78466 | 91 | for (; res; res = res->next) { |
1da177e4 | 92 | port = res->port; |
9dd78466 | 93 | if (!port) |
1da177e4 LT |
94 | continue; |
95 | port = port->next; | |
9dd78466 | 96 | if (!port) |
1da177e4 LT |
97 | continue; |
98 | port = port->next; | |
9dd78466 | 99 | if (!port) |
1da177e4 | 100 | continue; |
9dd78466 | 101 | if (port->min != port->max) |
1da177e4 LT |
102 | continue; |
103 | port->max += 0x70; | |
104 | changed = 1; | |
105 | } | |
9dd78466 BH |
106 | if (changed) |
107 | printk(KERN_INFO | |
108 | "pnp: SB audio device quirk - increasing port range\n"); | |
1da177e4 LT |
109 | } |
110 | ||
0509ad5e BH |
111 | |
112 | #include <linux/pci.h> | |
113 | ||
114 | static void quirk_system_pci_resources(struct pnp_dev *dev) | |
115 | { | |
116 | struct pci_dev *pdev = NULL; | |
117 | resource_size_t pnp_start, pnp_end, pci_start, pci_end; | |
118 | int i, j; | |
119 | ||
120 | /* | |
121 | * Some BIOSes have PNP motherboard devices with resources that | |
122 | * partially overlap PCI BARs. The PNP system driver claims these | |
123 | * motherboard resources, which prevents the normal PCI driver from | |
124 | * requesting them later. | |
125 | * | |
126 | * This patch disables the PNP resources that conflict with PCI BARs | |
127 | * so they won't be claimed by the PNP system driver. | |
128 | */ | |
129 | for_each_pci_dev(pdev) { | |
130 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
131 | if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM) || | |
132 | pci_resource_len(pdev, i) == 0) | |
133 | continue; | |
134 | ||
135 | pci_start = pci_resource_start(pdev, i); | |
136 | pci_end = pci_resource_end(pdev, i); | |
137 | for (j = 0; j < PNP_MAX_MEM; j++) { | |
138 | if (!pnp_mem_valid(dev, j) || | |
139 | pnp_mem_len(dev, j) == 0) | |
140 | continue; | |
141 | ||
142 | pnp_start = pnp_mem_start(dev, j); | |
143 | pnp_end = pnp_mem_end(dev, j); | |
144 | ||
145 | /* | |
146 | * If the PNP region doesn't overlap the PCI | |
147 | * region at all, there's no problem. | |
148 | */ | |
149 | if (pnp_end < pci_start || pnp_start > pci_end) | |
150 | continue; | |
151 | ||
152 | /* | |
153 | * If the PNP region completely encloses (or is | |
154 | * at least as large as) the PCI region, that's | |
155 | * also OK. For example, this happens when the | |
156 | * PNP device describes a bridge with PCI | |
157 | * behind it. | |
158 | */ | |
159 | if (pnp_start <= pci_start && | |
160 | pnp_end >= pci_end) | |
161 | continue; | |
162 | ||
163 | /* | |
164 | * Otherwise, the PNP region overlaps *part* of | |
165 | * the PCI region, and that might prevent a PCI | |
166 | * driver from requesting its resources. | |
167 | */ | |
168 | dev_warn(&dev->dev, "mem resource " | |
169 | "(0x%llx-0x%llx) overlaps %s BAR %d " | |
170 | "(0x%llx-0x%llx), disabling\n", | |
171 | (unsigned long long) pnp_start, | |
172 | (unsigned long long) pnp_end, | |
173 | pci_name(pdev), i, | |
174 | (unsigned long long) pci_start, | |
175 | (unsigned long long) pci_end); | |
176 | pnp_mem_flags(dev, j) = 0; | |
177 | } | |
178 | } | |
179 | } | |
180 | } | |
181 | ||
1da177e4 LT |
182 | /* |
183 | * PnP Quirks | |
184 | * Cards or devices that need some tweaking due to incomplete resource info | |
185 | */ | |
186 | ||
187 | static struct pnp_fixup pnp_fixups[] = { | |
188 | /* Soundblaster awe io port quirk */ | |
9dd78466 BH |
189 | {"CTL0021", quirk_awe32_resources}, |
190 | {"CTL0022", quirk_awe32_resources}, | |
191 | {"CTL0023", quirk_awe32_resources}, | |
1da177e4 | 192 | /* CMI 8330 interrupt and dma fix */ |
9dd78466 | 193 | {"@X@0001", quirk_cmi8330_resources}, |
1da177e4 | 194 | /* Soundblaster audio device io port range quirk */ |
9dd78466 BH |
195 | {"CTL0001", quirk_sb16audio_resources}, |
196 | {"CTL0031", quirk_sb16audio_resources}, | |
197 | {"CTL0041", quirk_sb16audio_resources}, | |
198 | {"CTL0042", quirk_sb16audio_resources}, | |
199 | {"CTL0043", quirk_sb16audio_resources}, | |
200 | {"CTL0044", quirk_sb16audio_resources}, | |
201 | {"CTL0045", quirk_sb16audio_resources}, | |
0509ad5e BH |
202 | {"PNP0c01", quirk_system_pci_resources}, |
203 | {"PNP0c02", quirk_system_pci_resources}, | |
9dd78466 | 204 | {""} |
1da177e4 LT |
205 | }; |
206 | ||
207 | void pnp_fixup_device(struct pnp_dev *dev) | |
208 | { | |
209 | int i = 0; | |
a05d0781 | 210 | void (*quirk)(struct pnp_dev *); |
1da177e4 LT |
211 | |
212 | while (*pnp_fixups[i].id) { | |
9dd78466 | 213 | if (compare_pnp_id(dev->id, pnp_fixups[i].id)) { |
a05d0781 BH |
214 | quirk = pnp_fixups[i].quirk_function; |
215 | ||
216 | #ifdef DEBUG | |
217 | dev_dbg(&dev->dev, "calling quirk 0x%p", quirk); | |
218 | print_fn_descriptor_symbol(": %s()\n", | |
219 | (unsigned long) *quirk); | |
220 | #endif | |
221 | (*quirk)(dev); | |
1da177e4 LT |
222 | } |
223 | i++; | |
224 | } | |
225 | } |