mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-23 11:18:54 +00:00
Code Issues Releases Activity

Implement unload and sync operations.

Browse Source
This commit is contained in:
Marcel Moolenaar 2015-07-03 05:44:58 +00:00
parent 9d0e5a1718
commit 42d3ab5d1b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=285074
2 changed files with 45 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
sys/dev/proto/proto_busdma.c
View File

@ -306,6 +306,28 @@ proto_busdma_md_load(struct proto_busdma *busdma, struct proto_md *md,
return (0); return (0);
} }
static int
proto_busdma_md_unload(struct proto_busdma *busdma, struct proto_md *md)
{
if (!md->physaddr)
return (ENXIO);
bus_dmamap_unload(md->bd_tag, md->bd_map);
md->physaddr = 0;
return (0);
}
static int
proto_busdma_sync(struct proto_busdma *busdma, struct proto_md *md,
struct proto_ioc_busdma *ioc)
{
if (!md->physaddr)
return (ENXIO);
bus_dmamap_sync(md->bd_tag, md->bd_map, ioc->u.sync.op);
return (0);
}
static struct proto_md * static struct proto_md *
proto_busdma_md_lookup(struct proto_busdma *busdma, u_long key) proto_busdma_md_lookup(struct proto_busdma *busdma, u_long key)
{ {
@ -419,6 +441,22 @@ proto_busdma_ioctl(struct proto_softc *sc, struct proto_busdma *busdma,
} }
error = proto_busdma_md_load(busdma, md, ioc, td); error = proto_busdma_md_load(busdma, md, ioc, td);
break; break;
case PROTO_IOC_BUSDMA_MD_UNLOAD:
md = proto_busdma_md_lookup(busdma, ioc->key);
if (md == NULL) {
error = EINVAL;
break;
}
error = proto_busdma_md_unload(busdma, md);
break;
case PROTO_IOC_BUSDMA_SYNC:
md = proto_busdma_md_lookup(busdma, ioc->key);
if (md == NULL) {
error = EINVAL;
break;
}
error = proto_busdma_sync(busdma, md, ioc);
break;
default: default:
error = EINVAL; error = EINVAL;
break; break;

7
sys/dev/proto/proto_dev.h
View File

@ -50,6 +50,8 @@ struct proto_ioc_busdma {
#define PROTO_IOC_BUSDMA_MD_CREATE 20 #define PROTO_IOC_BUSDMA_MD_CREATE 20
#define PROTO_IOC_BUSDMA_MD_DESTROY 21 #define PROTO_IOC_BUSDMA_MD_DESTROY 21
#define PROTO_IOC_BUSDMA_MD_LOAD 22 #define PROTO_IOC_BUSDMA_MD_LOAD 22
#define PROTO_IOC_BUSDMA_MD_UNLOAD 29
#define PROTO_IOC_BUSDMA_SYNC 30
unsigned long key; unsigned long key;
union { union {
struct { struct {
@ -72,6 +74,11 @@ struct proto_ioc_busdma {
unsigned long bus_addr; unsigned long bus_addr;
unsigned int bus_nsegs; unsigned int bus_nsegs;
} md; } md;
struct {
unsigned int op;
unsigned long base;
unsigned long size;
} sync;
} u; } u;
unsigned long result; unsigned long result;
}; };