PNP: remove pnp_resource_table from internal get/set interfaces
[linux-2.6.git] / drivers / pnp / quirks.c
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
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/string.h>
17 #include <linux/slab.h>
18 #include <linux/pnp.h>
19 #include <linux/io.h>
20 #include <linux/kallsyms.h>
21 #include "base.h"
22
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          */
34         for (; res; res = res->next) {
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                 dev_info(&dev->dev,
53                         "AWE32 quirk - added ioports 0x%lx and 0x%lx\n",
54                         (unsigned long)port2->min,
55                         (unsigned long)port3->min);
56         }
57 }
58
59 static void quirk_cmi8330_resources(struct pnp_dev *dev)
60 {
61         struct pnp_option *res = dev->dependent;
62         unsigned long tmp;
63
64         for (; res; res = res->next) {
65
66                 struct pnp_irq *irq;
67                 struct pnp_dma *dma;
68
69                 for (irq = res->irq; irq; irq = irq->next) {    // Valid irqs are 5, 7, 10
70                         tmp = 0x04A0;
71                         bitmap_copy(irq->map, &tmp, 16);        // 0000 0100 1010 0000
72                 }
73
74                 for (dma = res->dma; dma; dma = dma->next)      // Valid 8bit dma channels are 1,3
75                         if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
76                             IORESOURCE_DMA_8BIT)
77                                 dma->map = 0x000A;
78         }
79         dev_info(&dev->dev, "CMI8330 quirk - forced possible IRQs to 5, 7, 10 "
80                 "and DMA channels to 1, 3\n");
81 }
82
83 static void quirk_sb16audio_resources(struct pnp_dev *dev)
84 {
85         struct pnp_port *port;
86         struct pnp_option *res = dev->dependent;
87         int changed = 0;
88
89         /*
90          * The default range on the mpu port for these devices is 0x388-0x388.
91          * Here we increase that range so that two such cards can be
92          * auto-configured.
93          */
94
95         for (; res; res = res->next) {
96                 port = res->port;
97                 if (!port)
98                         continue;
99                 port = port->next;
100                 if (!port)
101                         continue;
102                 port = port->next;
103                 if (!port)
104                         continue;
105                 if (port->min != port->max)
106                         continue;
107                 port->max += 0x70;
108                 changed = 1;
109         }
110         if (changed)
111                 dev_info(&dev->dev, "SB audio device quirk - increased port range\n");
112 }
113
114
115 #include <linux/pci.h>
116
117 static void quirk_system_pci_resources(struct pnp_dev *dev)
118 {
119         struct pci_dev *pdev = NULL;
120         resource_size_t pnp_start, pnp_end, pci_start, pci_end;
121         int i, j;
122
123         /*
124          * Some BIOSes have PNP motherboard devices with resources that
125          * partially overlap PCI BARs.  The PNP system driver claims these
126          * motherboard resources, which prevents the normal PCI driver from
127          * requesting them later.
128          *
129          * This patch disables the PNP resources that conflict with PCI BARs
130          * so they won't be claimed by the PNP system driver.
131          */
132         for_each_pci_dev(pdev) {
133                 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
134                         if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM) ||
135                             pci_resource_len(pdev, i) == 0)
136                                 continue;
137
138                         pci_start = pci_resource_start(pdev, i);
139                         pci_end = pci_resource_end(pdev, i);
140                         for (j = 0; j < PNP_MAX_MEM; j++) {
141                                 if (!pnp_mem_valid(dev, j) ||
142                                     pnp_mem_len(dev, j) == 0)
143                                         continue;
144
145                                 pnp_start = pnp_mem_start(dev, j);
146                                 pnp_end = pnp_mem_end(dev, j);
147
148                                 /*
149                                  * If the PNP region doesn't overlap the PCI
150                                  * region at all, there's no problem.
151                                  */
152                                 if (pnp_end < pci_start || pnp_start > pci_end)
153                                         continue;
154
155                                 /*
156                                  * If the PNP region completely encloses (or is
157                                  * at least as large as) the PCI region, that's
158                                  * also OK.  For example, this happens when the
159                                  * PNP device describes a bridge with PCI
160                                  * behind it.
161                                  */
162                                 if (pnp_start <= pci_start &&
163                                     pnp_end >= pci_end)
164                                         continue;
165
166                                 /*
167                                  * Otherwise, the PNP region overlaps *part* of
168                                  * the PCI region, and that might prevent a PCI
169                                  * driver from requesting its resources.
170                                  */
171                                 dev_warn(&dev->dev, "mem resource "
172                                         "(0x%llx-0x%llx) overlaps %s BAR %d "
173                                         "(0x%llx-0x%llx), disabling\n",
174                                         (unsigned long long) pnp_start,
175                                         (unsigned long long) pnp_end,
176                                         pci_name(pdev), i,
177                                         (unsigned long long) pci_start,
178                                         (unsigned long long) pci_end);
179                                 pnp_mem_flags(dev, j) = 0;
180                         }
181                 }
182         }
183 }
184
185 /*
186  *  PnP Quirks
187  *  Cards or devices that need some tweaking due to incomplete resource info
188  */
189
190 static struct pnp_fixup pnp_fixups[] = {
191         /* Soundblaster awe io port quirk */
192         {"CTL0021", quirk_awe32_resources},
193         {"CTL0022", quirk_awe32_resources},
194         {"CTL0023", quirk_awe32_resources},
195         /* CMI 8330 interrupt and dma fix */
196         {"@X@0001", quirk_cmi8330_resources},
197         /* Soundblaster audio device io port range quirk */
198         {"CTL0001", quirk_sb16audio_resources},
199         {"CTL0031", quirk_sb16audio_resources},
200         {"CTL0041", quirk_sb16audio_resources},
201         {"CTL0042", quirk_sb16audio_resources},
202         {"CTL0043", quirk_sb16audio_resources},
203         {"CTL0044", quirk_sb16audio_resources},
204         {"CTL0045", quirk_sb16audio_resources},
205         {"PNP0c01", quirk_system_pci_resources},
206         {"PNP0c02", quirk_system_pci_resources},
207         {""}
208 };
209
210 void pnp_fixup_device(struct pnp_dev *dev)
211 {
212         int i = 0;
213         void (*quirk)(struct pnp_dev *);
214
215         while (*pnp_fixups[i].id) {
216                 if (compare_pnp_id(dev->id, pnp_fixups[i].id)) {
217                         quirk = pnp_fixups[i].quirk_function;
218
219 #ifdef DEBUG
220                         dev_dbg(&dev->dev, "calling ");
221                         print_fn_descriptor_symbol("%s()\n",
222                                 (unsigned long) *quirk);
223 #endif
224                         (*quirk)(dev);
225                 }
226                 i++;
227         }
228 }