dm: pci: Add driver model API functions for address mapping

[platform/kernel/u-boot.git] / include / pci.h

diff --git a/include/pci.h b/include/pci.h
index dcbe978..b61f760 100644 (file)
--- a/include/pci.h
+++ b/include/pci.h
@@ -1176,6 +1176,65 @@ int pci_get_regions(struct udevice *dev, struct pci_region **iop,
 u32 dm_pci_read_bar32(struct udevice *dev, int barnum);
 
 /**
+ * dm_pci_bus_to_phys() - convert a PCI bus address to a physical address
+ *
+ * @dev:       Device containing the PCI address
+ * @addr:      PCI address to convert
+ * @flags:     Flags for the region type (PCI_REGION_...)
+ * @return physical address corresponding to that PCI bus address
+ */
+phys_addr_t dm_pci_bus_to_phys(struct udevice *dev, pci_addr_t addr,
+                              unsigned long flags);
+
+/**
+ * dm_pci_phys_to_bus() - convert a physical address to a PCI bus address
+ *
+ * @dev:       Device containing the bus address
+ * @addr:      Physical address to convert
+ * @flags:     Flags for the region type (PCI_REGION_...)
+ * @return PCI bus address corresponding to that physical address
+ */
+pci_addr_t dm_pci_phys_to_bus(struct udevice *dev, phys_addr_t addr,
+                             unsigned long flags);
+
+/**
+ * dm_pci_map_bar() - get a virtual address associated with a BAR region
+ *
+ * Looks up a base address register and finds the physical memory address
+ * that corresponds to it
+ *
+ * @dev:       Device to check
+ * @bar:       Bar number to read (numbered from 0)
+ * @flags:     Flags for the region type (PCI_REGION_...)
+ * @return: pointer to the virtual address to use
+ */
+void *dm_pci_map_bar(struct udevice *dev, int bar, int flags);
+
+#define dm_pci_virt_to_bus(dev, addr, flags) \
+       dm_pci_phys_to_bus(dev, (virt_to_phys(addr)), (flags))
+#define dm_pci_bus_to_virt(dev, addr, flags, len, map_flags) \
+       map_physmem(dm_pci_bus_to_phys(dev, (addr), (flags)), \
+                   (len), (map_flags))
+
+#define dm_pci_phys_to_mem(dev, addr) \
+       dm_pci_phys_to_bus((dev), (addr), PCI_REGION_MEM)
+#define dm_pci_mem_to_phys(dev, addr) \
+       dm_pci_bus_to_phys((dev), (addr), PCI_REGION_MEM)
+#define dm_pci_phys_to_io(dev, addr) \
+       dm_pci_phys_to_bus((dev), (addr), PCI_REGION_IO)
+#define dm_pci_io_to_phys(dev, addr) \
+       dm_pci_bus_to_phys((dev), (addr), PCI_REGION_IO)
+
+#define dm_pci_virt_to_mem(dev, addr) \
+       dm_pci_virt_to_bus((dev), (addr), PCI_REGION_MEM)
+#define dm_pci_mem_to_virt(dev, addr, len, map_flags) \
+       dm_pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags))
+#define dm_pci_virt_to_io(dev, addr) \
+       dm_dm_pci_virt_to_bus((dev), (addr), PCI_REGION_IO)
+#define dm_pci_io_to_virt(dev, addr, len, map_flags) \
+       dm_dm_pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags))
+
+/**
  * dm_pci_find_device() - find a device by vendor/device ID
  *
  * @vendor:    Vendor ID