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authorJason Wright <jason@cvs.openbsd.org>2005-05-27 18:37:08 +0000
committerJason Wright <jason@cvs.openbsd.org>2005-05-27 18:37:08 +0000
commit63feb1723e33b4cef1c778ea584f20820749e7bf (patch)
tree222f51aa397e99d111813d64e28436f1f9fd9e7c
parentddaffbbc60905c29c6323e647453b5ae5e248a23 (diff)
use a fixed address for the base dva, also don't forget to setup the
pae table base address.
-rw-r--r--sys/arch/amd64/pci/iommu.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/sys/arch/amd64/pci/iommu.c b/sys/arch/amd64/pci/iommu.c
index a543963bdd5..69465e1b0b4 100644
--- a/sys/arch/amd64/pci/iommu.c
+++ b/sys/arch/amd64/pci/iommu.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: iommu.c,v 1.5 2005/05/27 07:46:38 jason Exp $ */
+/* $OpenBSD: iommu.c,v 1.6 2005/05/27 18:37:07 jason Exp $ */
/*
* Copyright (c) 2005 Jason L. Wright (jason@thought.net)
@@ -273,6 +273,7 @@ amdgart_probe(struct pcibus_attach_args *pba)
void *scrib = NULL;
struct extent *ex = NULL;
u_int32_t *pte;
+ paddr_t ptepa;
if (amdgart_enable == 0)
return;
@@ -298,6 +299,7 @@ amdgart_probe(struct pcibus_attach_args *pba)
goto err;
}
+#if 0
r = extent_alloc_subregion(iomem_ex, IOMMU_START, IOMMU_END,
IOMMU_SIZE * 1024 * 1024, IOMMU_ALIGN * 1024 * 1024, 0,
EX_NOBOUNDARY, EX_NOWAIT, &dvabase);
@@ -305,6 +307,9 @@ amdgart_probe(struct pcibus_attach_args *pba)
printf("\nGART: extent alloc failed: %d", r);
goto err;
}
+#else
+ dvabase = IOMMU_START;
+#endif
mapsize = IOMMU_SIZE * 1024 * 1024;
ptesize = mapsize / (PAGE_SIZE / sizeof(u_int32_t));
@@ -319,6 +324,7 @@ amdgart_probe(struct pcibus_attach_args *pba)
if (amdgart_load_phys(&plist, (vaddr_t)pte))
goto err;
+ ptepa = VM_PAGE_TO_PHYS(TAILQ_FIRST(&plist));
ex = extent_create("iommu", dvabase, dvabase + mapsize - 1, M_DEVBUF,
NULL, NULL, EX_NOWAIT | EX_NOCOALESCE);
@@ -369,6 +375,9 @@ amdgart_probe(struct pcibus_attach_args *pba)
pci_conf_write(pba->pba_pc, tag, GART_APBASE,
dvabase >> 25);
+ pci_conf_write(pba->pba_pc, tag, GART_TBLBASE,
+ (ptepa >> 8) & GART_TBLBASE_MASK);
+
v = pci_conf_read(pba->pba_pc, tag, GART_APCTRL);
v |= GART_APCTRL_ENABLE;
v &= ~(GART_APCTRL_DISIO | GART_APCTRL_DISTBL);
@@ -391,8 +400,7 @@ amdgart_probe(struct pcibus_attach_args *pba)
amdgart_softcs[count].g_dmat = pba->pba_dmat;
printf("\niommu%d(cpu%d): base 0x%lx length %dMB pte 0x%lx",
- count, dev - 24, dvabase, IOMMU_SIZE,
- VM_PAGE_TO_PHYS(TAILQ_FIRST(&plist)));
+ count, dev - 24, dvabase, IOMMU_SIZE, ptepa);
count++;
}
}