Changeset ee06f2a in mainline for kernel/arch/ppc32/include/asm.h

Timestamp:

2009-02-15T15:28:00Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

2d96f4d

Parents:

e7f2ad68

Message:

Introduce a more platform-neutral name for programmed I/O.

The new API looks like pio_read_n() or pio_write_n(), where n is 8, 16 or 32.
The old API (i.e. inb(), inw(), inl(), outb() outw(), outl()) may have made
some people think that the interface is only to be used with the separate I/O
space. That's not the case. This API is to be implemented on all platforms
so that we can finally have really generic kernel device drivers.

File:

• kernel/arch/ppc32/include/asm.h (modified) (1 diff)

kernel/arch/ppc32/include/asm.h

@@ -150 +150 @@
 extern void userspace_asm(uintptr_t uspace_uarg, uintptr_t stack, uintptr_t entry);
 
-/** No I/O port address space on PowerPC. */
-static inline void outb(ioport_t port, uint8_t v)
+static inline void pio_write_8(ioport_t port, uint8_t v)
 {
+        /* XXX */
 }
 
-/** No I/O port address space on PowerPC. */
-static inline uint8_t inb(ioport_t port)
+static inline uint8_t pio_read_8(ioport_t port)
 {
-        return 0;
+        return 0;       /* XXX */
 }