Mercurial > sos > sos
changeset 48:f219716c6b54
arch: handle device attention properly
| author | Josef 'Jeff' Sipek <jeffpc@josefsipek.net> |
|---|---|
| date | Fri, 08 Apr 2011 10:29:14 -0400 |
| parents | 0d5e25251e10 |
| children | 253190997564 06d03083acd4 |
| files | arch/io.c |
| diffstat | 1 files changed, 5 insertions(+), 1 deletions(-) [+] |
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--- a/arch/io.c Fri Apr 08 09:56:54 2011 -0400 +++ b/arch/io.c Fri Apr 08 10:29:14 2011 -0400 @@ -1,3 +1,4 @@ + #include "channel.h" #include <die.h> @@ -46,6 +47,7 @@ void wait_for_io_int() { struct psw psw; + u8 devst; __builtin_memset(&psw, 0, sizeof(struct psw)); psw.io = 1; @@ -66,7 +68,9 @@ "r1", "r2" ); - if (*((u8*) 0x210) & 0x04) + devst = *((u8*) 0x210); + + if (*((u8*) 0x210) & 0x84) return; die();