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nexedi
linux
Commits
b1017ae4
Commit
b1017ae4
authored
Sep 28, 2003
by
Geert Uytterhoeven
Committed by
Linus Torvalds
Sep 28, 2003
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[PATCH] Amiga Zorro bus doc updates
Amiga Zorro bus: Update the docs to match the current situation.
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Documentation/zorro.txt
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b1017ae4
...
...
@@ -2,7 +2,7 @@
----------------------------------------
Written by Geert Uytterhoeven <geert@linux-m68k.org>
Last revised:
February 27, 2000
Last revised:
September 5, 2003
1. Introduction
...
...
@@ -75,7 +75,7 @@ they are CPU physical addresses as well.
The treatment of these regions depends on the type of Zorro space:
- Zorro II address space is always mapped and does not have to be mapped
explicitly using ioremap().
explicitly using
z_
ioremap().
Conversion from bus/physical Zorro II addresses to kernel virtual addresses
and vice versa is done using:
...
...
@@ -83,22 +83,20 @@ The treatment of these regions depends on the type of Zorro space:
virt_addr = ZTWO_VADDR(bus_addr);
bus_addr = ZTWO_PADDR(virt_addr);
- Zorro III address space must be mapped explicitly using ioremap() first
- Zorro III address space must be mapped explicitly using
z_
ioremap() first
before it can be accessed:
virt_addr = ioremap(bus_addr, size);
virt_addr =
z_
ioremap(bus_addr, size);
...
iounmap(virt_addr);
z_
iounmap(virt_addr);
5. References
-------------
linux/include/linux/zorro.h
linux/include/linux/ioport.h
linux/include/asm-m68k/io.h
linux/include/asm-m68k/amigahw.h
linux/include/asm-ppc/io.h
linux/include/asm-{m68k,ppc}/zorro.h
linux/include/linux/zorro_ids.h
linux/drivers/zorro
/proc/bus/zorro
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