summaryrefslogtreecommitdiffstats
path: root/arch/ia64/sn/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ia64/sn/kernel')
-rw-r--r--arch/ia64/sn/kernel/io_init.c109
1 files changed, 26 insertions, 83 deletions
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 238e2c511d94..2b00adedc45e 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -118,76 +118,26 @@ static void __init sn_fixup_ionodes(void)
}
/*
- * sn_pci_legacy_window_fixup - Create PCI controller windows for
+ * sn_pci_legacy_window_fixup - Setup PCI resources for
* legacy IO and MEM space. This needs to
* be done here, as the PROM does not have
* ACPI support defining the root buses
* and their resources (_CRS),
*/
static void
-sn_legacy_pci_window_fixup(struct pci_controller *controller,
- u64 legacy_io, u64 legacy_mem)
+sn_legacy_pci_window_fixup(struct resource *res,
+ u64 legacy_io, u64 legacy_mem)
{
- controller->window = kcalloc(2, sizeof(struct pci_window),
- GFP_KERNEL);
- BUG_ON(controller->window == NULL);
- controller->window[0].offset = legacy_io;
- controller->window[0].resource.name = "legacy_io";
- controller->window[0].resource.flags = IORESOURCE_IO;
- controller->window[0].resource.start = legacy_io;
- controller->window[0].resource.end =
- controller->window[0].resource.start + 0xffff;
- controller->window[0].resource.parent = &ioport_resource;
- controller->window[1].offset = legacy_mem;
- controller->window[1].resource.name = "legacy_mem";
- controller->window[1].resource.flags = IORESOURCE_MEM;
- controller->window[1].resource.start = legacy_mem;
- controller->window[1].resource.end =
- controller->window[1].resource.start + (1024 * 1024) - 1;
- controller->window[1].resource.parent = &iomem_resource;
- controller->windows = 2;
-}
-
-/*
- * sn_pci_window_fixup() - Create a pci_window for each device resource.
- * It will setup pci_windows for use by
- * pcibios_bus_to_resource(), pcibios_resource_to_bus(),
- * etc.
- */
-static void
-sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
- s64 * pci_addrs)
-{
- struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
- unsigned int i;
- unsigned int idx;
- unsigned int new_count;
- struct pci_window *new_window;
-
- if (count == 0)
- return;
- idx = controller->windows;
- new_count = controller->windows + count;
- new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
- BUG_ON(new_window == NULL);
- if (controller->window) {
- memcpy(new_window, controller->window,
- sizeof(struct pci_window) * controller->windows);
- kfree(controller->window);
- }
-
- /* Setup a pci_window for each device resource. */
- for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
- if (pci_addrs[i] == -1)
- continue;
-
- new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
- new_window[idx].resource = dev->resource[i];
- idx++;
- }
-
- controller->windows = new_count;
- controller->window = new_window;
+ res[0].name = "legacy_io";
+ res[0].flags = IORESOURCE_IO;
+ res[0].start = legacy_io;
+ res[0].end = res[0].start + 0xffff;
+ res[0].parent = &ioport_resource;
+ res[1].name = "legacy_mem";
+ res[1].flags = IORESOURCE_MEM;
+ res[1].start = legacy_mem;
+ res[1].end = res[1].start + (1024 * 1024) - 1;
+ res[1].parent = &iomem_resource;
}
/*
@@ -199,9 +149,7 @@ sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
void
sn_io_slot_fixup(struct pci_dev *dev)
{
- unsigned int count = 0;
int idx;
- s64 pci_addrs[PCI_ROM_RESOURCE + 1];
unsigned long addr, end, size, start;
struct pcidev_info *pcidev_info;
struct sn_irq_info *sn_irq_info;
@@ -229,7 +177,6 @@ sn_io_slot_fixup(struct pci_dev *dev)
for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
- pci_addrs[idx] = -1;
continue;
}
@@ -237,11 +184,8 @@ sn_io_slot_fixup(struct pci_dev *dev)
end = dev->resource[idx].end;
size = end - start;
if (size == 0) {
- pci_addrs[idx] = -1;
continue;
}
- pci_addrs[idx] = start;
- count++;
addr = pcidev_info->pdi_pio_mapped_addr[idx];
addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
dev->resource[idx].start = addr;
@@ -276,11 +220,6 @@ sn_io_slot_fixup(struct pci_dev *dev)
IORESOURCE_ROM_BIOS_COPY;
}
}
- /* Create a pci_window in the pci_controller struct for
- * each device resource.
- */
- if (count > 0)
- sn_pci_window_fixup(dev, count, pci_addrs);
sn_pci_fixup_slot(dev, pcidev_info, sn_irq_info);
}
@@ -297,8 +236,8 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
s64 status = 0;
struct pci_controller *controller;
struct pcibus_bussoft *prom_bussoft_ptr;
+ struct resource *res;
LIST_HEAD(resources);
- int i;
status = sal_get_pcibus_info((u64) segment, (u64) busnum,
(u64) ia64_tpa(&prom_bussoft_ptr));
@@ -310,19 +249,23 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
BUG_ON(!controller);
controller->segment = segment;
+ res = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
+ BUG_ON(!res);
+
/*
* Temporarily save the prom_bussoft_ptr for use by sn_bus_fixup().
* (platform_data will be overwritten later in sn_common_bus_fixup())
*/
controller->platform_data = prom_bussoft_ptr;
- sn_legacy_pci_window_fixup(controller,
- prom_bussoft_ptr->bs_legacy_io,
- prom_bussoft_ptr->bs_legacy_mem);
- for (i = 0; i < controller->windows; i++)
- pci_add_resource_offset(&resources,
- &controller->window[i].resource,
- controller->window[i].offset);
+ sn_legacy_pci_window_fixup(res,
+ prom_bussoft_ptr->bs_legacy_io,
+ prom_bussoft_ptr->bs_legacy_mem);
+ pci_add_resource_offset(&resources, &res[0],
+ prom_bussoft_ptr->bs_legacy_io);
+ pci_add_resource_offset(&resources, &res[1],
+ prom_bussoft_ptr->bs_legacy_mem);
+
bus = pci_scan_root_bus(NULL, busnum, &pci_root_ops, controller,
&resources);
if (bus == NULL)
@@ -333,7 +276,7 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
return;
error_return:
-
+ kfree(res);
kfree(controller);
return;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 11:24:19 +0000