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Diffstat (limited to 'arch/powerpc/kernel/pci-common.c')
-rw-r--r--arch/powerpc/kernel/pci-common.c108
1 files changed, 65 insertions, 43 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 458ed3bee66..cce98d76e90 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -214,7 +214,7 @@ char __devinit *pcibios_setup(char *str)
* If the interrupt is used, then gets the interrupt line from the
* openfirmware and sets it in the pci_dev and pci_config line.
*/
-int pci_read_irq_line(struct pci_dev *pci_dev)
+static int pci_read_irq_line(struct pci_dev *pci_dev)
{
struct of_irq oirq;
unsigned int virq;
@@ -283,7 +283,6 @@ int pci_read_irq_line(struct pci_dev *pci_dev)
return 0;
}
-EXPORT_SYMBOL(pci_read_irq_line);
/*
* Platform support for /proc/bus/pci/X/Y mmap()s,
@@ -921,18 +920,22 @@ static void __devinit pcibios_fixup_resources(struct pci_dev *dev)
struct resource *res = dev->resource + i;
if (!res->flags)
continue;
- /* On platforms that have PCI_PROBE_ONLY set, we don't
- * consider 0 as an unassigned BAR value. It's technically
- * a valid value, but linux doesn't like it... so when we can
- * re-assign things, we do so, but if we can't, we keep it
- * around and hope for the best...
+
+ /* If we're going to re-assign everything, we mark all resources
+ * as unset (and 0-base them). In addition, we mark BARs starting
+ * at 0 as unset as well, except if PCI_PROBE_ONLY is also set
+ * since in that case, we don't want to re-assign anything
*/
- if (res->start == 0 && !pci_has_flag(PCI_PROBE_ONLY)) {
- pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] is unassigned\n",
- pci_name(dev), i,
- (unsigned long long)res->start,
- (unsigned long long)res->end,
- (unsigned int)res->flags);
+ if (pci_has_flag(PCI_REASSIGN_ALL_RSRC) ||
+ (res->start == 0 && !pci_has_flag(PCI_PROBE_ONLY))) {
+ /* Only print message if not re-assigning */
+ if (!pci_has_flag(PCI_REASSIGN_ALL_RSRC))
+ pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] "
+ "is unassigned\n",
+ pci_name(dev), i,
+ (unsigned long long)res->start,
+ (unsigned long long)res->end,
+ (unsigned int)res->flags);
res->end -= res->start;
res->start = 0;
res->flags |= IORESOURCE_UNSET;
@@ -1042,6 +1045,16 @@ static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
if (i >= 3 && bus->self->transparent)
continue;
+ /* If we are going to re-assign everything, mark the resource
+ * as unset and move it down to 0
+ */
+ if (pci_has_flag(PCI_REASSIGN_ALL_RSRC)) {
+ res->flags |= IORESOURCE_UNSET;
+ res->end -= res->start;
+ res->start = 0;
+ continue;
+ }
+
pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x] fixup...\n",
pci_name(dev), i,
(unsigned long long)res->start,\
@@ -1118,6 +1131,11 @@ void __devinit pcibios_setup_bus_devices(struct pci_bus *bus)
}
}
+void pcibios_set_master(struct pci_dev *dev)
+{
+ /* No special bus mastering setup handling */
+}
+
void __devinit pcibios_fixup_bus(struct pci_bus *bus)
{
/* When called from the generic PCI probe, read PCI<->PCI bridge
@@ -1262,18 +1280,15 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
pci_bus_for_each_resource(bus, res, i) {
if (!res || !res->flags || res->start > res->end || res->parent)
continue;
+
+ /* If the resource was left unset at this point, we clear it */
+ if (res->flags & IORESOURCE_UNSET)
+ goto clear_resource;
+
if (bus->parent == NULL)
pr = (res->flags & IORESOURCE_IO) ?
&ioport_resource : &iomem_resource;
else {
- /* Don't bother with non-root busses when
- * re-assigning all resources. We clear the
- * resource flags as if they were colliding
- * and as such ensure proper re-allocation
- * later.
- */
- if (pci_has_flag(PCI_REASSIGN_ALL_RSRC))
- goto clear_resource;
pr = pci_find_parent_resource(bus->self, res);
if (pr == res) {
/* this happens when the generic PCI
@@ -1304,9 +1319,9 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
if (reparent_resources(pr, res) == 0)
continue;
}
- printk(KERN_WARNING "PCI: Cannot allocate resource region "
- "%d of PCI bridge %d, will remap\n", i, bus->number);
-clear_resource:
+ pr_warning("PCI: Cannot allocate resource region "
+ "%d of PCI bridge %d, will remap\n", i, bus->number);
+ clear_resource:
res->start = res->end = 0;
res->flags = 0;
}
@@ -1451,16 +1466,11 @@ void __init pcibios_resource_survey(void)
{
struct pci_bus *b;
- /* Allocate and assign resources. If we re-assign everything, then
- * we skip the allocate phase
- */
+ /* Allocate and assign resources */
list_for_each_entry(b, &pci_root_buses, node)
pcibios_allocate_bus_resources(b);
-
- if (!pci_has_flag(PCI_REASSIGN_ALL_RSRC)) {
- pcibios_allocate_resources(0);
- pcibios_allocate_resources(1);
- }
+ pcibios_allocate_resources(0);
+ pcibios_allocate_resources(1);
/* Before we start assigning unassigned resource, we try to reserve
* the low IO area and the VGA memory area if they intersect the
@@ -1555,14 +1565,13 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return pci_enable_resources(dev, mask);
}
-void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
+static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, struct list_head *resources)
{
- struct pci_bus *bus = hose->bus;
struct resource *res;
int i;
/* Hookup PHB IO resource */
- bus->resource[0] = res = &hose->io_resource;
+ res = &hose->io_resource;
if (!res->flags) {
printk(KERN_WARNING "PCI: I/O resource not set for host"
@@ -1580,6 +1589,7 @@ void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
(unsigned long long)res->start,
(unsigned long long)res->end,
(unsigned long)res->flags);
+ pci_add_resource(resources, res);
/* Hookup PHB Memory resources */
for (i = 0; i < 3; ++i) {
@@ -1597,12 +1607,12 @@ void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
res->flags = IORESOURCE_MEM;
#endif /* CONFIG_PPC32 */
}
- bus->resource[i+1] = res;
pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n", i,
(unsigned long long)res->start,
(unsigned long long)res->end,
(unsigned long)res->flags);
+ pci_add_resource(resources, res);
}
pr_debug("PCI: PHB MEM offset = %016llx\n",
@@ -1696,6 +1706,7 @@ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
*/
void __devinit pcibios_scan_phb(struct pci_controller *hose)
{
+ LIST_HEAD(resources);
struct pci_bus *bus;
struct device_node *node = hose->dn;
int mode;
@@ -1703,22 +1714,24 @@ void __devinit pcibios_scan_phb(struct pci_controller *hose)
pr_debug("PCI: Scanning PHB %s\n",
node ? node->full_name : "<NO NAME>");
+ /* Get some IO space for the new PHB */
+ pcibios_setup_phb_io_space(hose);
+
+ /* Wire up PHB bus resources */
+ pcibios_setup_phb_resources(hose, &resources);
+
/* Create an empty bus for the toplevel */
- bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
+ bus = pci_create_root_bus(hose->parent, hose->first_busno,
+ hose->ops, hose, &resources);
if (bus == NULL) {
pr_err("Failed to create bus for PCI domain %04x\n",
hose->global_number);
+ pci_free_resource_list(&resources);
return;
}
bus->secondary = hose->first_busno;
hose->bus = bus;
- /* Get some IO space for the new PHB */
- pcibios_setup_phb_io_space(hose);
-
- /* Wire up PHB bus resources */
- pcibios_setup_phb_resources(hose);
-
/* Get probe mode and perform scan */
mode = PCI_PROBE_NORMAL;
if (node && ppc_md.pci_probe_mode)
@@ -1732,6 +1745,12 @@ void __devinit pcibios_scan_phb(struct pci_controller *hose)
if (mode == PCI_PROBE_NORMAL)
hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
+ /* Platform gets a chance to do some global fixups before
+ * we proceed to resource allocation
+ */
+ if (ppc_md.pcibios_fixup_phb)
+ ppc_md.pcibios_fixup_phb(hose);
+
/* Configure PCI Express settings */
if (bus && !pci_has_flag(PCI_PROBE_ONLY)) {
struct pci_bus *child;
@@ -1747,10 +1766,13 @@ void __devinit pcibios_scan_phb(struct pci_controller *hose)
static void fixup_hide_host_resource_fsl(struct pci_dev *dev)
{
int i, class = dev->class >> 8;
+ /* When configured as agent, programing interface = 1 */
+ int prog_if = dev->class & 0xf;
if ((class == PCI_CLASS_PROCESSOR_POWERPC ||
class == PCI_CLASS_BRIDGE_OTHER) &&
(dev->hdr_type == PCI_HEADER_TYPE_NORMAL) &&
+ (prog_if == 0) &&
(dev->bus->parent == NULL)) {
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
dev->resource[i].start = 0;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-13 13:37:39 +0000