Merge git://git.denx.de/u-boot-fdt

[u-boot] / drivers / pci / pci_common.c

diff --git a/drivers/pci/pci_common.c b/drivers/pci/pci_common.c
index 24c66bbef2f62222863cc853e02fc5fc140fd8f9..b9ff23f35bc8627650994c0e573adbe9c63eff14 100644 (file)
--- a/drivers/pci/pci_common.c
+++ b/drivers/pci/pci_common.c
@@ -182,10 +182,10 @@ u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum)
 }
 
 int __pci_hose_bus_to_phys(struct pci_controller *hose,
-                               pci_addr_t bus_addr,
-                               unsigned long flags,
-                               unsigned long skip_mask,
-                               phys_addr_t *pa)
+                          pci_addr_t bus_addr,
+                          unsigned long flags,
+                          unsigned long skip_mask,
+                          phys_addr_t *pa)
 {
        struct pci_region *res;
        int i;
@@ -240,6 +240,68 @@ phys_addr_t pci_hose_bus_to_phys(struct pci_controller *hose,
        return phys_addr;
 }
 
+int __pci_hose_phys_to_bus(struct pci_controller *hose,
+                          phys_addr_t phys_addr,
+                          unsigned long flags,
+                          unsigned long skip_mask,
+                          pci_addr_t *ba)
+{
+       struct pci_region *res;
+       pci_addr_t bus_addr;
+       int i;
+
+       for (i = 0; i < hose->region_count; i++) {
+               res = &hose->regions[i];
+
+               if (((res->flags ^ flags) & PCI_REGION_TYPE) != 0)
+                       continue;
+
+               if (res->flags & skip_mask)
+                       continue;
+
+               bus_addr = phys_addr - res->phys_start + res->bus_start;
+
+               if (bus_addr >= res->bus_start &&
+                   bus_addr < res->bus_start + res->size) {
+                       *ba = bus_addr;
+                       return 0;
+               }
+       }
+
+       return 1;
+}
+
+pci_addr_t pci_hose_phys_to_bus(struct pci_controller *hose,
+                               phys_addr_t phys_addr,
+                               unsigned long flags)
+{
+       pci_addr_t bus_addr = 0;
+       int ret;
+
+       if (!hose) {
+               puts("pci_hose_phys_to_bus: invalid hose\n");
+               return bus_addr;
+       }
+
+       /*
+        * if PCI_REGION_MEM is set we do a two pass search with preference
+        * on matches that don't have PCI_REGION_SYS_MEMORY set
+        */
+       if ((flags & PCI_REGION_MEM) == PCI_REGION_MEM) {
+               ret = __pci_hose_phys_to_bus(hose, phys_addr,
+                               flags, PCI_REGION_SYS_MEMORY, &bus_addr);
+               if (!ret)
+                       return bus_addr;
+       }
+
+       ret = __pci_hose_phys_to_bus(hose, phys_addr, flags, 0, &bus_addr);
+
+       if (ret)
+               puts("pci_hose_phys_to_bus: invalid physical address\n");
+
+       return bus_addr;
+}
+
 pci_dev_t pci_find_device(unsigned int vendor, unsigned int device, int index)
 {
        struct pci_device_id ids[2] = { {}, {0, 0} };