pci-common.c (d02e30c31c57683a66ed68a1bcff900ca78f6d56) pci-common.c (89a74ecccd1f78e51faf6287e5c0e93a92ac096e)
1/*
2 * Contains common pci routines for ALL ppc platform
3 * (based on pci_32.c and pci_64.c)
4 *
5 * Port for PPC64 David Engebretsen, IBM Corp.
6 * Contains common pci routines for ppc64 platform, pSeries and iSeries brands.
7 *
8 * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM

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1042/* Fixup resources of a PCI<->PCI bridge */
1043static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
1044{
1045 struct resource *res;
1046 int i;
1047
1048 struct pci_dev *dev = bus->self;
1049
1/*
2 * Contains common pci routines for ALL ppc platform
3 * (based on pci_32.c and pci_64.c)
4 *
5 * Port for PPC64 David Engebretsen, IBM Corp.
6 * Contains common pci routines for ppc64 platform, pSeries and iSeries brands.
7 *
8 * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM

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1042/* Fixup resources of a PCI<->PCI bridge */
1043static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
1044{
1045 struct resource *res;
1046 int i;
1047
1048 struct pci_dev *dev = bus->self;
1049
1050 for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
1051 if ((res = bus->resource[i]) == NULL)
1050 pci_bus_for_each_resource(bus, res, i) {
1051 if (!res || !res->flags)
1052 continue;
1052 continue;
1053 if (!res->flags)
1054 continue;
1055 if (i >= 3 && bus->self->transparent)
1056 continue;
1057
1058 pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x] fixup...\n",
1059 pci_name(dev), i,
1060 (unsigned long long)res->start,\
1061 (unsigned long long)res->end,
1062 (unsigned int)res->flags);

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1176 *
1177 * Why? Because some silly external IO cards only decode
1178 * the low 10 bits of the IO address. The 0x00-0xff region
1179 * is reserved for motherboard devices that decode all 16
1180 * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
1181 * but we want to try to avoid allocating at 0x2900-0x2bff
1182 * which might have be mirrored at 0x0100-0x03ff..
1183 */
1053 if (i >= 3 && bus->self->transparent)
1054 continue;
1055
1056 pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x] fixup...\n",
1057 pci_name(dev), i,
1058 (unsigned long long)res->start,\
1059 (unsigned long long)res->end,
1060 (unsigned int)res->flags);

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1174 *
1175 * Why? Because some silly external IO cards only decode
1176 * the low 10 bits of the IO address. The 0x00-0xff region
1177 * is reserved for motherboard devices that decode all 16
1178 * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
1179 * but we want to try to avoid allocating at 0x2900-0x2bff
1180 * which might have be mirrored at 0x0100-0x03ff..
1181 */
1184void pcibios_align_resource(void *data, struct resource *res,
1182resource_size_t pcibios_align_resource(void *data, const struct resource *res,
1185 resource_size_t size, resource_size_t align)
1186{
1187 struct pci_dev *dev = data;
1183 resource_size_t size, resource_size_t align)
1184{
1185 struct pci_dev *dev = data;
1186 resource_size_t start = res->start;
1188
1189 if (res->flags & IORESOURCE_IO) {
1187
1188 if (res->flags & IORESOURCE_IO) {
1190 resource_size_t start = res->start;
1191
1192 if (skip_isa_ioresource_align(dev))
1189 if (skip_isa_ioresource_align(dev))
1193 return;
1194 if (start & 0x300) {
1190 return start;
1191 if (start & 0x300)
1195 start = (start + 0x3ff) & ~0x3ff;
1192 start = (start + 0x3ff) & ~0x3ff;
1196 res->start = start;
1197 }
1198 }
1193 }
1194
1195 return start;
1199}
1200EXPORT_SYMBOL(pcibios_align_resource);
1201
1202/*
1203 * Reparent resource children of pr that conflict with res
1204 * under res, and make res replace those children.
1205 */
1206static int reparent_resources(struct resource *parent,

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1273{
1274 struct pci_bus *b;
1275 int i;
1276 struct resource *res, *pr;
1277
1278 pr_debug("PCI: Allocating bus resources for %04x:%02x...\n",
1279 pci_domain_nr(bus), bus->number);
1280
1196}
1197EXPORT_SYMBOL(pcibios_align_resource);
1198
1199/*
1200 * Reparent resource children of pr that conflict with res
1201 * under res, and make res replace those children.
1202 */
1203static int reparent_resources(struct resource *parent,

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1270{
1271 struct pci_bus *b;
1272 int i;
1273 struct resource *res, *pr;
1274
1275 pr_debug("PCI: Allocating bus resources for %04x:%02x...\n",
1276 pci_domain_nr(bus), bus->number);
1277
1281 for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
1282 if ((res = bus->resource[i]) == NULL || !res->flags
1283 || res->start > res->end || res->parent)
1278 pci_bus_for_each_resource(bus, res, i) {
1279 if (!res || !res->flags || res->start > res->end || res->parent)
1284 continue;
1285 if (bus->parent == NULL)
1286 pr = (res->flags & IORESOURCE_IO) ?
1287 &ioport_resource : &iomem_resource;
1288 else {
1289 /* Don't bother with non-root busses when
1290 * re-assigning all resources. We clear the
1291 * resource flags as if they were colliding

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1281 if (bus->parent == NULL)
1282 pr = (res->flags & IORESOURCE_IO) ?
1283 &ioport_resource : &iomem_resource;
1284 else {
1285 /* Don't bother with non-root busses when
1286 * re-assigning all resources. We clear the
1287 * resource flags as if they were colliding

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