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authorFam Zheng <famz@redhat.com>2014-05-05 15:53:41 +0800
committerMichael Tokarev <mjt@tls.msk.ru>2014-05-07 21:00:44 +0400
commitedc1ba7a7a13b1c721f2a7791ff809633d85fb9b (patch)
treecd371d15f00da43aa7c52f97d67c323a4525c847 /docs
parent307b2f01488ae0fab18a8f0538e7c750842e74dd (diff)
docs/memory.txt: Fix document on MMIO operations
.impl.valid should be .impl.unaligned and the description needs some fixes. .old_portio is removed since commit b40acf99b (ioport: Switch dispatching to memory core layer). Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Diffstat (limited to 'docs')
-rw-r--r--docs/memory.txt10
1 files changed, 5 insertions, 5 deletions
diff --git a/docs/memory.txt b/docs/memory.txt
index 22eaec780e..5bdbdb3691 100644
--- a/docs/memory.txt
+++ b/docs/memory.txt
@@ -232,8 +232,8 @@ various constraints can be supplied to control how these callbacks are called:
(in bytes) supported by the *implementation*; other access sizes will be
emulated using the ones available. For example a 4-byte write will be
emulated using four 1-byte writes, if .impl.max_access_size = 1.
- - .impl.valid specifies that the *implementation* only supports unaligned
- accesses; unaligned accesses will be emulated by two aligned accesses.
- - .old_portio and .old_mmio can be used to ease porting from code using
- cpu_register_io_memory() and register_ioport(). They should not be used
- in new code.
+ - .impl.unaligned specifies that the *implementation* supports unaligned
+ accesses; if false, unaligned accesses will be emulated by two aligned
+ accesses.
+ - .old_mmio can be used to ease porting from code using
+ cpu_register_io_memory(). It should not be used in new code.