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author | Michael Brown | 2008-10-12 03:11:50 +0200 |
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committer | Michael Brown | 2008-10-12 03:15:34 +0200 |
commit | aef6d0df5cf4e4c917e44d6b145802fa206da246 (patch) | |
tree | 69218e362822816b15dc0e9b4c95b19a6c943778 | |
parent | [i386] Remove obsolete functions from virtaddr.h (diff) | |
download | ipxe-aef6d0df5cf4e4c917e44d6b145802fa206da246.tar.gz ipxe-aef6d0df5cf4e4c917e44d6b145802fa206da246.tar.xz ipxe-aef6d0df5cf4e4c917e44d6b145802fa206da246.zip |
[ioapi] Absorb virt_to_phys() and phys_to_virt() into the I/O API
-rw-r--r-- | src/arch/i386/core/x86_io.c | 7 | ||||
-rw-r--r-- | src/arch/i386/include/gpxe/x86_io.h | 30 | ||||
-rw-r--r-- | src/arch/i386/include/virtaddr.h | 12 | ||||
-rw-r--r-- | src/include/gpxe/io.h | 50 |
4 files changed, 60 insertions, 39 deletions
diff --git a/src/arch/i386/core/x86_io.c b/src/arch/i386/core/x86_io.c index 926f1d60..1aab6c96 100644 --- a/src/arch/i386/core/x86_io.c +++ b/src/arch/i386/core/x86_io.c @@ -65,10 +65,13 @@ static void x86_writeq ( uint64_t data, volatile uint64_t *io_addr ) { : : "A" ( data ), "r" ( io_addr ) ); } -PROVIDE_IOAPI_INLINE ( x86, iounmap ); -PROVIDE_IOAPI_INLINE ( x86, io_to_bus ); +PROVIDE_IOAPI_INLINE ( x86, virt_to_phys ); +PROVIDE_IOAPI_INLINE ( x86, phys_to_virt ); PROVIDE_IOAPI_INLINE ( x86, virt_to_bus ); PROVIDE_IOAPI_INLINE ( x86, bus_to_virt ); +PROVIDE_IOAPI_INLINE ( x86, ioremap ); +PROVIDE_IOAPI_INLINE ( x86, iounmap ); +PROVIDE_IOAPI_INLINE ( x86, io_to_bus ); PROVIDE_IOAPI_INLINE ( x86, readb ); PROVIDE_IOAPI_INLINE ( x86, readw ); PROVIDE_IOAPI_INLINE ( x86, readl ); diff --git a/src/arch/i386/include/gpxe/x86_io.h b/src/arch/i386/include/gpxe/x86_io.h index 3a907f8b..8b9942e6 100644 --- a/src/arch/i386/include/gpxe/x86_io.h +++ b/src/arch/i386/include/gpxe/x86_io.h @@ -28,6 +28,26 @@ * */ +static inline __always_inline unsigned long +IOAPI_INLINE ( x86, virt_to_phys ) ( volatile const void *addr ) { + return ( ( ( unsigned long ) addr ) + virt_offset ); +} + +static inline __always_inline void * +IOAPI_INLINE ( x86, phys_to_virt ) ( unsigned long phys_addr ) { + return ( ( void * ) ( phys_addr - virt_offset ) ); +} + +static inline __always_inline unsigned long +IOAPI_INLINE ( x86, virt_to_bus ) ( volatile const void *addr ) { + return virt_to_phys ( addr ); +} + +static inline __always_inline void * +IOAPI_INLINE ( x86, bus_to_virt ) ( unsigned long bus_addr ) { + return phys_to_virt ( bus_addr ); +} + static inline __always_inline void * IOAPI_INLINE ( x86, ioremap ) ( unsigned long bus_addr, size_t len __unused ) { return phys_to_virt ( bus_addr ); @@ -43,16 +63,6 @@ IOAPI_INLINE ( x86, io_to_bus ) ( volatile const void *io_addr ) { return virt_to_phys ( io_addr ); } -static inline __always_inline unsigned long -IOAPI_INLINE ( x86, virt_to_bus ) ( volatile const void *addr ) { - return virt_to_phys ( addr ); -} - -static inline __always_inline void * -IOAPI_INLINE ( x86, bus_to_virt ) ( unsigned long bus_addr ) { - return phys_to_virt ( bus_addr ); -} - /* * MMIO reads and writes up to 32 bits * diff --git a/src/arch/i386/include/virtaddr.h b/src/arch/i386/include/virtaddr.h index 6c63b501..e7bb2cce 100644 --- a/src/arch/i386/include/virtaddr.h +++ b/src/arch/i386/include/virtaddr.h @@ -32,18 +32,6 @@ /* Variables in virtaddr.S */ extern unsigned long virt_offset; -/* - * Convert between virtual and physical addresses - * - */ -static inline unsigned long virt_to_phys ( volatile const void *virt_addr ) { - return ( ( unsigned long ) virt_addr ) + virt_offset; -} - -static inline void * phys_to_virt ( unsigned long phys_addr ) { - return ( void * ) ( phys_addr - virt_offset ); -} - #else /* KEEP_IT_REAL */ #include <stdint.h> diff --git a/src/include/gpxe/io.h b/src/include/gpxe/io.h index 58755e6f..24cc180f 100644 --- a/src/include/gpxe/io.h +++ b/src/include/gpxe/io.h @@ -149,28 +149,24 @@ } while ( 0 ) /** - * Map bus address as an I/O address + * Convert virtual address to a physical address * - * @v bus_addr Bus address - * @v len Length of region - * @ret io_addr I/O address + * @v addr Virtual address + * @ret phys_addr Physical address */ -void * ioremap ( unsigned long bus_addr, size_t len ); +unsigned long virt_to_phys ( volatile const void *addr ); /** - * Unmap I/O address + * Convert physical address to a virtual address * - * @v io_addr I/O address - */ -void iounmap ( volatile const void *io_addr ); - -/** - * Convert I/O address to bus address (for debug only) + * @v addr Virtual address + * @ret phys_addr Physical address * - * @v io_addr I/O address - * @ret bus_addr Bus address + * This operation isn't actually valid within our memory model, and is + * impossible to achieve under -DKEEP_IT_REAL. Some drivers haven't + * been updated to avoid it yet, though. */ -unsigned long io_to_bus ( volatile const void *io_addr ); +void * phys_to_virt ( unsigned long phys_addr ); /** * Convert virtual address to a bus address @@ -193,6 +189,30 @@ unsigned long virt_to_bus ( volatile const void *addr ); void * bus_to_virt ( unsigned long bus_addr ); /** + * Map bus address as an I/O address + * + * @v bus_addr Bus address + * @v len Length of region + * @ret io_addr I/O address + */ +void * ioremap ( unsigned long bus_addr, size_t len ); + +/** + * Unmap I/O address + * + * @v io_addr I/O address + */ +void iounmap ( volatile const void *io_addr ); + +/** + * Convert I/O address to bus address (for debug only) + * + * @v io_addr I/O address + * @ret bus_addr Bus address + */ +unsigned long io_to_bus ( volatile const void *io_addr ); + +/** * Read byte from memory-mapped device * * @v io_addr I/O address |