X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fpci%2Fpci.c;h=cd64a87fc6d9b200ed805ae1e6f5a7e014180435;hb=944a4894c047f9fc17d21f1e4ca92d5909b8405b;hp=e2b05d89918f099e54f66fc338d21ae9625f2764;hpb=4cc64742a89e8ce90c69c3c85e4e9f4706062f2f;p=u-boot

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e2b05d8991..cd64a87fc6 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -116,6 +116,25 @@ PCI_READ_VIA_DWORD_OP(word, u16 *, 0x02)
 PCI_WRITE_VIA_DWORD_OP(byte, u8, 0x03, 0x000000ff)
 PCI_WRITE_VIA_DWORD_OP(word, u16, 0x02, 0x0000ffff)
 
+/* Get a virtual address associated with a BAR region */
+void *pci_map_bar(pci_dev_t pdev, int bar, int flags)
+{
+	pci_addr_t pci_bus_addr;
+	u32 bar_response;
+
+	/* read BAR address */
+	pci_read_config_dword(pdev, bar, &bar_response);
+	pci_bus_addr = (pci_addr_t)(bar_response & ~0xf);
+
+	/*
+	 * Pass "0" as the length argument to pci_bus_to_virt.  The arg
+	 * isn't actualy used on any platform because u-boot assumes a static
+	 * linear mapping.  In the future, this could read the BAR size
+	 * and pass that as the size if needed.
+	 */
+	return pci_bus_to_virt(pdev, pci_bus_addr, flags, 0, MAP_NOCACHE);
+}
+
 /*
  *
  */
@@ -146,6 +165,19 @@ struct pci_controller *pci_bus_to_hose (int bus)
 	return NULL;
 }
 
+int pci_last_busno(void)
+{
+	struct pci_controller *hose = hose_head;
+
+	if (!hose)
+		return -1;
+
+	while (hose->next)
+		hose = hose->next;
+
+	return hose->last_busno;
+}
+
 #ifndef CONFIG_IXP425
 pci_dev_t pci_find_devices(struct pci_device_id *ids, int index)
 {
@@ -218,67 +250,121 @@ pci_dev_t pci_find_device(unsigned int vendor, unsigned int device, int index)
  *
  */
 
-pci_addr_t pci_hose_phys_to_bus (struct pci_controller *hose,
-				    phys_addr_t phys_addr,
-				    unsigned long flags)
+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;
 
-	if (!hose) {
-		printf ("pci_hose_phys_to_bus: %s\n", "invalid hose");
-		goto Done;
-	}
-
 	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) {
-			return bus_addr;
+			*ba = bus_addr;
+			return 0;
 		}
 	}
 
-	printf ("pci_hose_phys_to_bus: %s\n", "invalid physical address");
-
-Done:
-	return 0;
+	return 1;
 }
 
-phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose,
-				 pci_addr_t bus_addr,
-				 unsigned long flags)
+pci_addr_t pci_hose_phys_to_bus (struct pci_controller *hose,
+				    phys_addr_t phys_addr,
+				    unsigned long flags)
 {
-	struct pci_region *res;
-	int i;
+	pci_addr_t bus_addr = 0;
+	int ret;
 
 	if (!hose) {
-		printf ("pci_hose_bus_to_phys: %s\n", "invalid hose");
-		goto Done;
+		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;
+}
+
+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)
+{
+	struct pci_region *res;
+	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;
+
 		if (bus_addr >= res->bus_start &&
 			bus_addr < res->bus_start + res->size) {
-			return bus_addr - res->bus_start + res->phys_start;
+			*pa = (bus_addr - res->bus_start + res->phys_start);
+			return 0;
 		}
 	}
 
-	printf ("pci_hose_bus_to_phys: %s\n", "invalid physical address");
+	return 1;
+}
 
-Done:
-	return 0;
+phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose,
+				 pci_addr_t bus_addr,
+				 unsigned long flags)
+{
+	phys_addr_t phys_addr = 0;
+	int ret;
+
+	if (!hose) {
+		puts ("pci_hose_bus_to_phys: invalid hose\n");
+		return phys_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_bus_to_phys(hose, bus_addr,
+				flags, PCI_REGION_SYS_MEMORY, &phys_addr);
+		if (!ret)
+			return phys_addr;
+	}
+
+	ret = __pci_hose_bus_to_phys(hose, bus_addr, flags, 0, &phys_addr);
+
+	if (ret)
+		puts ("pci_hose_bus_to_phys: invalid physical address\n");
+
+	return phys_addr;
 }
 
 /*
@@ -302,7 +388,7 @@ int pci_hose_config_device(struct pci_controller *hose,
 
 	pci_hose_write_config_dword (hose, dev, PCI_COMMAND, 0);
 
-	for (bar = PCI_BASE_ADDRESS_0; bar < PCI_BASE_ADDRESS_5; bar += 4) {
+	for (bar = PCI_BASE_ADDRESS_0; bar <= PCI_BASE_ADDRESS_5; bar += 4) {
 		pci_hose_write_config_dword (hose, dev, bar, 0xffffffff);
 		pci_hose_read_config_dword (hose, dev, bar, &bar_response);