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| author | Mitchell Horne <mhorne@FreeBSD.org> | 2021-11-17 15:29:02 +0000 |
|---|---|---|
| committer | Mitchell Horne <mhorne@FreeBSD.org> | 2021-11-19 19:05:52 +0000 |
| commit | 90d4da62259299a8d91fed1121be97ac5b7b6b3c (patch) | |
| tree | e2cd423b239990de8f0390a55569b16569b86ebd /sys/amd64 | |
| parent | 1adebe3cd6b1eb0973969e2c4c5d41f174caa304 (diff) | |
| download | src-90d4da62259299a8d91fed1121be97ac5b7b6b3c.tar.gz src-90d4da62259299a8d91fed1121be97ac5b7b6b3c.zip | |
amd64: provide PHYS_IN_DMAP() and VIRT_IN_DMAP()
It is useful for quickly checking an address against the DMAP region.
These definitions exist already on arm64 and riscv.
Reviewed by: kib, markj
MFC after: 3 days
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D32962
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/include/vmparam.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/amd64/include/vmparam.h b/sys/amd64/include/vmparam.h index 6cb8b3f0071a..c841cc41f17b 100644 --- a/sys/amd64/include/vmparam.h +++ b/sys/amd64/include/vmparam.h @@ -239,16 +239,19 @@ * because the result is not actually accessed until later, but the early * vt fb startup needs to be reworked. */ +#define PHYS_IN_DMAP(pa) (dmaplimit == 0 || (pa) < dmaplimit) +#define VIRT_IN_DMAP(va) ((va) >= DMAP_MIN_ADDRESS && \ + (va) < (DMAP_MIN_ADDRESS + dmaplimit)) + #define PMAP_HAS_DMAP 1 #define PHYS_TO_DMAP(x) ({ \ - KASSERT(dmaplimit == 0 || (x) < dmaplimit, \ + KASSERT(PHYS_IN_DMAP(x), \ ("physical address %#jx not covered by the DMAP", \ (uintmax_t)x)); \ (x) | DMAP_MIN_ADDRESS; }) #define DMAP_TO_PHYS(x) ({ \ - KASSERT((x) < (DMAP_MIN_ADDRESS + dmaplimit) && \ - (x) >= DMAP_MIN_ADDRESS, \ + KASSERT(VIRT_IN_DMAP(x), \ ("virtual address %#jx not covered by the DMAP", \ (uintmax_t)x)); \ (x) & ~DMAP_MIN_ADDRESS; }) |