diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2022-05-23 21:59:02 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2022-06-28 13:20:21 +0200 |
| commit | 4313a24985f00340eeb591fd66aa2b257b9e0a69 (patch) | |
| tree | e928f62456119eba18604dc474ab018d9c572ac1 /arch/parisc | |
| parent | 93929fb6c4ef6211e96679f060c842f35fac7710 (diff) | |
arch/*/: remove CONFIG_VIRT_TO_BUS
All architecture-independent users of virt_to_bus() and bus_to_virt()
have been fixed to use the dma mapping interfaces or have been
removed now. This means the definitions on most architectures, and the
CONFIG_VIRT_TO_BUS symbol are now obsolete and can be removed.
The only exceptions to this are a few network and scsi drivers for m68k
Amiga and VME machines and ppc32 Macintosh. These drivers work correctly
with the old interfaces and are probably not worth changing.
On alpha and parisc, virt_to_bus() were still used in asm/floppy.h.
alpha can use isa_virt_to_bus() like x86 does, and parisc can just
open-code the virt_to_phys() here, as this is architecture specific
code.
I tried updating the bus-virt-phys-mapping.rst documentation, which
started as an email from Linus to explain some details of the Linux-2.0
driver interfaces. The bits about virt_to_bus() were declared obsolete
backin 2000, and the rest is not all that relevant any more, so in the
end I just decided to remove the file completely.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Acked-by: Helge Deller <deller@gmx.de> # parisc
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/parisc/include/asm/floppy.h | 4 | ||||
| -rw-r--r-- | arch/parisc/include/asm/io.h | 2 |
3 files changed, 2 insertions, 5 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 5f2448dc5a2b..b0d68e9e2df0 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -43,7 +43,6 @@ config PARISC select SYSCTL_ARCH_UNALIGN_ALLOW select SYSCTL_EXCEPTION_TRACE select HAVE_MOD_ARCH_SPECIFIC - select VIRT_TO_BUS select MODULES_USE_ELF_RELA select CLONE_BACKWARDS select TTY # Needed for pdc_cons.c diff --git a/arch/parisc/include/asm/floppy.h b/arch/parisc/include/asm/floppy.h index 762cfe7778c0..b318a7df52f6 100644 --- a/arch/parisc/include/asm/floppy.h +++ b/arch/parisc/include/asm/floppy.h @@ -179,7 +179,7 @@ static void _fd_chose_dma_mode(char *addr, unsigned long size) { if(can_use_virtual_dma == 2) { if((unsigned int) addr >= (unsigned int) high_memory || - virt_to_bus(addr) >= 0x1000000 || + virt_to_phys(addr) >= 0x1000000 || _CROSS_64KB(addr, size, 0)) use_virtual_dma = 1; else @@ -215,7 +215,7 @@ static int hard_dma_setup(char *addr, unsigned long size, int mode, int io) doing_pdma = 0; clear_dma_ff(FLOPPY_DMA); set_dma_mode(FLOPPY_DMA,mode); - set_dma_addr(FLOPPY_DMA,virt_to_bus(addr)); + set_dma_addr(FLOPPY_DMA,virt_to_phys(addr)); set_dma_count(FLOPPY_DMA,size); enable_dma(FLOPPY_DMA); return 0; diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h index 837ddddbac6a..42ffb60a6ea9 100644 --- a/arch/parisc/include/asm/io.h +++ b/arch/parisc/include/asm/io.h @@ -7,8 +7,6 @@ #define virt_to_phys(a) ((unsigned long)__pa(a)) #define phys_to_virt(a) __va(a) -#define virt_to_bus virt_to_phys -#define bus_to_virt phys_to_virt static inline unsigned long isa_bus_to_virt(unsigned long addr) { BUG(); |