ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/x86/pci/bus_numa.c b/marvell/linux/arch/x86/pci/bus_numa.c
new file mode 100644
index 0000000..2752c02
--- /dev/null
+++ b/marvell/linux/arch/x86/pci/bus_numa.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/range.h>
+
+#include "bus_numa.h"
+
+LIST_HEAD(pci_root_infos);
+
+static struct pci_root_info *x86_find_pci_root_info(int bus)
+{
+ struct pci_root_info *info;
+
+ list_for_each_entry(info, &pci_root_infos, list)
+ if (info->busn.start == bus)
+ return info;
+
+ return NULL;
+}
+
+int x86_pci_root_bus_node(int bus)
+{
+ struct pci_root_info *info = x86_find_pci_root_info(bus);
+
+ if (!info)
+ return NUMA_NO_NODE;
+
+ return info->node;
+}
+
+void x86_pci_root_bus_resources(int bus, struct list_head *resources)
+{
+ struct pci_root_info *info = x86_find_pci_root_info(bus);
+ struct pci_root_res *root_res;
+ struct resource_entry *window;
+ bool found = false;
+
+ if (!info)
+ goto default_resources;
+
+ printk(KERN_DEBUG "PCI: root bus %02x: hardware-probed resources\n",
+ bus);
+
+ /* already added by acpi ? */
+ resource_list_for_each_entry(window, resources)
+ if (window->res->flags & IORESOURCE_BUS) {
+ found = true;
+ break;
+ }
+
+ if (!found)
+ pci_add_resource(resources, &info->busn);
+
+ list_for_each_entry(root_res, &info->resources, list)
+ pci_add_resource(resources, &root_res->res);
+
+ return;
+
+default_resources:
+ /*
+ * We don't have any host bridge aperture information from the
+ * "native host bridge drivers," e.g., amd_bus or broadcom_bus,
+ * so fall back to the defaults historically used by pci_create_bus().
+ */
+ printk(KERN_DEBUG "PCI: root bus %02x: using default resources\n", bus);
+ pci_add_resource(resources, &ioport_resource);
+ pci_add_resource(resources, &iomem_resource);
+}
+
+struct pci_root_info __init *alloc_pci_root_info(int bus_min, int bus_max,
+ int node, int link)
+{
+ struct pci_root_info *info;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+
+ if (!info)
+ return info;
+
+ sprintf(info->name, "PCI Bus #%02x", bus_min);
+
+ INIT_LIST_HEAD(&info->resources);
+ info->busn.name = info->name;
+ info->busn.start = bus_min;
+ info->busn.end = bus_max;
+ info->busn.flags = IORESOURCE_BUS;
+ info->node = node;
+ info->link = link;
+
+ list_add_tail(&info->list, &pci_root_infos);
+
+ return info;
+}
+
+void update_res(struct pci_root_info *info, resource_size_t start,
+ resource_size_t end, unsigned long flags, int merge)
+{
+ struct resource *res;
+ struct pci_root_res *root_res;
+
+ if (start > end)
+ return;
+
+ if (start == MAX_RESOURCE)
+ return;
+
+ if (!merge)
+ goto addit;
+
+ /* try to merge it with old one */
+ list_for_each_entry(root_res, &info->resources, list) {
+ resource_size_t final_start, final_end;
+ resource_size_t common_start, common_end;
+
+ res = &root_res->res;
+ if (res->flags != flags)
+ continue;
+
+ common_start = max(res->start, start);
+ common_end = min(res->end, end);
+ if (common_start > common_end + 1)
+ continue;
+
+ final_start = min(res->start, start);
+ final_end = max(res->end, end);
+
+ res->start = final_start;
+ res->end = final_end;
+ return;
+ }
+
+addit:
+
+ /* need to add that */
+ root_res = kzalloc(sizeof(*root_res), GFP_KERNEL);
+ if (!root_res)
+ return;
+
+ res = &root_res->res;
+ res->name = info->name;
+ res->flags = flags;
+ res->start = start;
+ res->end = end;
+
+ list_add_tail(&root_res->list, &info->resources);
+}