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pc64: fix up pointer calculations and enable sdvirtio disk driver

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This commit is contained in:
mischief 2014-02-03 01:22:26 -08:00
parent 34f7e4ef9a
commit 1eef373152
2 changed files with 11 additions and 6 deletions
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15
sys/src/9/pc/sdvirtio.c
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@ -42,6 +42,11 @@ enum {
Next = 1,
Write = 2,
Indirect = 4,
};
/* struct sizes */
enum {
VringSize = 4,
};
struct Vring
@ -111,10 +116,10 @@ mkvqueue(int size)
q = malloc(sizeof(*q) + sizeof(void*)*size);
p = mallocalign(
PGROUND(sizeof(Vdesc)*size +
sizeof(Vring) +
VringSize +
sizeof(u16int)*size +
sizeof(u16int)) +
PGROUND(sizeof(Vring) +
PGROUND(VringSize +
sizeof(Vused)*size +
sizeof(u16int)),
BY2PG, 0, 0);
@ -128,15 +133,15 @@ mkvqueue(int size)
q->desc = (void*)p;
p += sizeof(Vdesc)*size;
q->avail = (void*)p;
p += sizeof(Vring);
p += VringSize;
q->availent = (void*)p;
p += sizeof(u16int)*size;
q->availevent = (void*)p;
p += sizeof(u16int);
p = (uchar*)PGROUND((ulong)p);
p = (uchar*)PGROUND((uintptr)p);
q->used = (void*)p;
p += sizeof(Vring);
p += VringSize;
q->usedent = (void*)p;
p += sizeof(Vused)*size;
q->usedevent = (void*)p;

2
sys/src/9/pc64/pc64
View file

@ -92,7 +92,7 @@ misc
# sdmylex pci sdscsi
sdiahci pci sdscsi led
# sdodin pci sdscsi led
# sdvirtio pci sdscsi
sdvirtio pci sdscsi
# sdmmc pci pmmc
# sdloop