diff options
| author | nyan <nyan@FreeBSD.org> | 2001-06-26 11:47:24 +0000 |
|---|---|---|
| committer | nyan <nyan@FreeBSD.org> | 2001-06-26 11:47:24 +0000 |
| commit | 0389b45e3baf316ed6c2c3e63ef0c667be5891f8 (patch) | |
| tree | f337ca82e73fcebdb0806cfa36d88b36a8b3a6bd /sys/pc98/cbus/cbus_dma.c | |
| parent | d80add6a08dd15b2e8e5c815aab486c0f39d6cc3 (diff) | |
| download | FreeBSD-src-0389b45e3baf316ed6c2c3e63ef0c667be5891f8.zip FreeBSD-src-0389b45e3baf316ed6c2c3e63ef0c667be5891f8.tar.gz | |
Merged from sys/i386/isa/isa_dma.c revision 1.7.
Diffstat (limited to 'sys/pc98/cbus/cbus_dma.c')
| -rw-r--r-- | sys/pc98/cbus/cbus_dma.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/pc98/cbus/cbus_dma.c b/sys/pc98/cbus/cbus_dma.c index 62de37d..0ba9d40 100644 --- a/sys/pc98/cbus/cbus_dma.c +++ b/sys/pc98/cbus/cbus_dma.c @@ -56,6 +56,8 @@ #include <sys/bus.h> #include <sys/kernel.h> #include <sys/malloc.h> +#include <sys/lock.h> +#include <sys/mutex.h> #include <sys/module.h> #ifdef PC98 #include <machine/md_var.h> @@ -285,7 +287,12 @@ isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan) } /* translate to physical */ + mtx_lock(&vm_mtx); /* + * XXX: need to hold for longer period to + * ensure that mappings don't change + */ phys = pmap_extract(pmap_kernel(), (vm_offset_t)addr); + mtx_unlock(&vm_mtx); if (flags & ISADMA_RAW) { dma_auto_mode |= (1 << chan); @@ -433,7 +440,9 @@ isa_dmarangecheck(caddr_t va, u_int length, int chan) endva = (vm_offset_t)round_page((vm_offset_t)va + length); for (; va < (caddr_t) endva ; va += PAGE_SIZE) { + mtx_lock(&vm_mtx); phys = trunc_page(pmap_extract(pmap_kernel(), (vm_offset_t)va)); + mtx_unlock(&vm_mtx); #ifdef EPSON_BOUNCEDMA #define ISARAM_END 0xf00000 #else |
