dm: sandbox: pci: Add PCI support for sandbox

Add the required header information, device tree nodes and I/O accessor
functions to support PCI on sandbox. All devices are emulated by drivers
which can be added as required for testing or development.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 12 insertions, 4 deletions

diff --git a/arch/sandbox/include/asm/io.h b/arch/sandbox/include/asm/io.h
index 895fcb872f..5b87fde116 100644
--- a/arch/sandbox/include/asm/io.h
+++ b/arch/sandbox/include/asm/io.h
@@ -22,10 +22,7 @@ void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
 /*
  * Take down a mapping set up by map_physmem().
  */
-static inline void unmap_physmem(void *vaddr, unsigned long flags)
-{
-
-}
+void unmap_physmem(const void *vaddr, unsigned long flags);
 
 /* For sandbox, we want addresses to point into our RAM buffer */
 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
@@ -33,8 +30,10 @@ static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
 	return map_physmem(paddr, len, MAP_WRBACK);
 }
 
+/* Remove a previous mapping */
 static inline void unmap_sysmem(const void *vaddr)
 {
+	unmap_physmem(vaddr, MAP_WRBACK);
 }
 
 /* Map from a pointer to our RAM buffer */
@@ -48,6 +47,15 @@ phys_addr_t map_to_sysmem(const void *ptr);
 #define writew(v, addr)
 #define writel(v, addr)
 
+/* I/O access functions */
+int inl(unsigned int addr);
+int inw(unsigned int addr);
+int inb(unsigned int addr);
+
+void outl(unsigned int value, unsigned int addr);
+void outw(unsigned int value, unsigned int addr);
+void outb(unsigned int value, unsigned int addr);
+
 #include <iotrace.h>
 
 #endif