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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-11 18:50:26 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-11 18:50:26 -0800
commit7b67e751479d50b7f84d1a3cc5216eed5e534b66 (patch)
treea1a6746857cf65f04dde739fe271bf4143d55eaf /arch/xtensa
parent9f13a1fd452f11c18004ba2422a6384b424ec8a9 (diff)
parent76ccc297018d25d55b789bbd508861ef1e2cdb0c (diff)
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Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (80 commits) x86/PCI: Expand the x86_msi_ops to have a restore MSIs. PCI: Increase resource array mask bit size in pcim_iomap_regions() PCI: DEVICE_COUNT_RESOURCE should be equal to PCI_NUM_RESOURCES PCI: pci_ids: add device ids for STA2X11 device (aka ConneXT) PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB x86/PCI: amd: factor out MMCONFIG discovery PCI: Enable ATS at the device state restore PCI: msi: fix imbalanced refcount of msi irq sysfs objects PCI: kconfig: English typo in pci/pcie/Kconfig PCI/PM/Runtime: make PCI traces quieter PCI: remove pci_create_bus() xtensa/PCI: convert to pci_scan_root_bus() for correct root bus resources x86/PCI: convert to pci_create_root_bus() and pci_scan_root_bus() x86/PCI: use pci_scan_bus() instead of pci_scan_bus_parented() x86/PCI: read Broadcom CNB20LE host bridge info before PCI scan sparc32, leon/PCI: convert to pci_scan_root_bus() for correct root bus resources sparc/PCI: convert to pci_create_root_bus() sh/PCI: convert to pci_scan_root_bus() for correct root bus resources powerpc/PCI: convert to pci_create_root_bus() powerpc/PCI: split PHB part out of pcibios_map_io_space() ... Fix up conflicts in drivers/pci/msi.c and include/linux/pci_regs.h due to the same patches being applied in other branches.
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/include/asm/pci.h5
-rw-r--r--arch/xtensa/kernel/pci.c90
2 files changed, 47 insertions, 48 deletions
diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
index 4609b0f15f1f..05244f07dd31 100644
--- a/arch/xtensa/include/asm/pci.h
+++ b/arch/xtensa/include/asm/pci.h
@@ -22,11 +22,6 @@
extern struct pci_controller* pcibios_alloc_controller(void);
-static inline void pcibios_set_master(struct pci_dev *dev)
-{
- /* No special bus mastering setup handling */
-}
-
static inline void pcibios_penalize_isa_irq(int irq)
{
/* We don't do dynamic PCI IRQ allocation */
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index cd1026931203..61045c192e88 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -134,9 +134,46 @@ struct pci_controller * __init pcibios_alloc_controller(void)
return pci_ctrl;
}
+static void __init pci_controller_apertures(struct pci_controller *pci_ctrl,
+ struct list_head *resources)
+{
+ struct resource *res;
+ unsigned long io_offset;
+ int i;
+
+ io_offset = (unsigned long)pci_ctrl->io_space.base;
+ res = &pci_ctrl->io_resource;
+ if (!res->flags) {
+ if (io_offset)
+ printk (KERN_ERR "I/O resource not set for host"
+ " bridge %d\n", pci_ctrl->index);
+ res->start = 0;
+ res->end = IO_SPACE_LIMIT;
+ res->flags = IORESOURCE_IO;
+ }
+ res->start += io_offset;
+ res->end += io_offset;
+ pci_add_resource(resources, res);
+
+ for (i = 0; i < 3; i++) {
+ res = &pci_ctrl->mem_resources[i];
+ if (!res->flags) {
+ if (i > 0)
+ continue;
+ printk(KERN_ERR "Memory resource not set for "
+ "host bridge %d\n", pci_ctrl->index);
+ res->start = 0;
+ res->end = ~0U;
+ res->flags = IORESOURCE_MEM;
+ }
+ pci_add_resource(resources, res);
+ }
+}
+
static int __init pcibios_init(void)
{
struct pci_controller *pci_ctrl;
+ struct list_head resources;
struct pci_bus *bus;
int next_busno = 0, i;
@@ -145,19 +182,10 @@ static int __init pcibios_init(void)
/* Scan all of the recorded PCI controllers. */
for (pci_ctrl = pci_ctrl_head; pci_ctrl; pci_ctrl = pci_ctrl->next) {
pci_ctrl->last_busno = 0xff;
- bus = pci_scan_bus(pci_ctrl->first_busno, pci_ctrl->ops,
- pci_ctrl);
- if (pci_ctrl->io_resource.flags) {
- unsigned long offs;
-
- offs = (unsigned long)pci_ctrl->io_space.base;
- pci_ctrl->io_resource.start += offs;
- pci_ctrl->io_resource.end += offs;
- bus->resource[0] = &pci_ctrl->io_resource;
- }
- for (i = 0; i < 3; ++i)
- if (pci_ctrl->mem_resources[i].flags)
- bus->resource[i+1] =&pci_ctrl->mem_resources[i];
+ INIT_LIST_HEAD(&resources);
+ pci_controller_apertures(pci_ctrl, &resources);
+ bus = pci_scan_root_bus(NULL, pci_ctrl->first_busno,
+ pci_ctrl->ops, pci_ctrl, &resources);
pci_ctrl->bus = bus;
pci_ctrl->last_busno = bus->subordinate;
if (next_busno <= pci_ctrl->last_busno)
@@ -178,36 +206,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
int i;
io_offset = (unsigned long)pci_ctrl->io_space.base;
- if (bus->parent == NULL) {
- /* this is a host bridge - fill in its resources */
- pci_ctrl->bus = bus;
-
- bus->resource[0] = res = &pci_ctrl->io_resource;
- if (!res->flags) {
- if (io_offset)
- printk (KERN_ERR "I/O resource not set for host"
- " bridge %d\n", pci_ctrl->index);
- res->start = 0;
- res->end = IO_SPACE_LIMIT;
- res->flags = IORESOURCE_IO;
- }
- res->start += io_offset;
- res->end += io_offset;
-
- for (i = 0; i < 3; i++) {
- res = &pci_ctrl->mem_resources[i];
- if (!res->flags) {
- if (i > 0)
- continue;
- printk(KERN_ERR "Memory resource not set for "
- "host bridge %d\n", pci_ctrl->index);
- res->start = 0;
- res->end = ~0U;
- res->flags = IORESOURCE_MEM;
- }
- bus->resource[i+1] = res;
- }
- } else {
+ if (bus->parent) {
/* This is a subordinate bridge */
pci_read_bridge_bases(bus);
@@ -227,6 +226,11 @@ char __init *pcibios_setup(char *str)
return str;
}
+void pcibios_set_master(struct pci_dev *dev)
+{
+ /* No special bus mastering setup handling */
+}
+
/* the next one is stolen from the alpha port... */
void __init