diff options
| -rw-r--r-- | share/man/man9/Makefile | 1 | ||||
| -rw-r--r-- | share/man/man9/bus_alloc_resource.9 | 24 | ||||
| -rw-r--r-- | sys/sys/bus.h | 6 |
3 files changed, 27 insertions, 4 deletions
diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile index 471c1e0..f6f7e51 100644 --- a/share/man/man9/Makefile +++ b/share/man/man9/Makefile @@ -344,6 +344,7 @@ MLINKS+=atomic.9 atomic_add.9 \ atomic.9 atomic_subtract.9 MLINKS+=buf.9 bp.9 MLINKS+=bus_activate_resource.9 bus_deactivate_resource.9 +MLINKS+=bus_alloc_resource.9 bus_alloc_resource_any.9 MLINKS+=bus_dma.9 busdma.9 \ bus_dma.9 bus_dmamap_create.9 \ bus_dma.9 bus_dmamap_destroy.9 \ diff --git a/share/man/man9/bus_alloc_resource.9 b/share/man/man9/bus_alloc_resource.9 index 9bb9c88..b0c151b 100644 --- a/share/man/man9/bus_alloc_resource.9 +++ b/share/man/man9/bus_alloc_resource.9 @@ -32,7 +32,8 @@ .Dt BUS_ALLOC_RESOURCE 9 .Os .Sh NAME -.Nm bus_alloc_resource +.Nm bus_alloc_resource , +.Nm bus_alloc_resource_any .Nd allocate resources from a parent bus .Sh SYNOPSIS .In sys/param.h @@ -43,13 +44,28 @@ .In machine/resource.h .Ft struct resource * .Fn bus_alloc_resource "device_t dev" "int type" "int *rid" "u_long start" "u_long end" "u_long count" "u_int flags" +.Ft struct resource * +.Fn bus_alloc_resource_any "device_t dev" "int type" "int *rid" "u_int flags" .Sh DESCRIPTION This is an easy interface to the resource-management functions. It hides the indirection through the parent's method table. This function generally should be called in attach, but (except in some rare cases) never earlier. .Pp -Its arguments are as follows: +The +.Fn bus_alloc_resource_any +function is a convenience wrapper for +.Fn bus_alloc_resource . +It sets the values for +.Fa start , +.Fa end , +and +.Fa count +to the default resource (see description of +.Fa start +below). +.Pp +The arguments are as follows: .Bl -item .It .Fa dev @@ -150,8 +166,8 @@ should be saved in the softc of the device after these calls. irqid = 0; portres = bus_alloc_resource(dev, SYS_RES_IOPORT, &portid, 0ul, ~0ul, 32, RF_ACTIVE); - irqres = bus_alloc_resource(dev, SYS_RES_IRQ, &irqid, - 0ul, ~0ul, 1, RF_ACTIVE | RF_SHAREABLE); + irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &irqid, + RF_ACTIVE | RF_SHAREABLE); .Ed .Sh SEE ALSO .Xr bus_activate_resource 9 , diff --git a/sys/sys/bus.h b/sys/sys/bus.h index 79d4d157..ff260ed 100644 --- a/sys/sys/bus.h +++ b/sys/sys/bus.h @@ -309,6 +309,12 @@ int bus_child_present(device_t child); int bus_child_pnpinfo_str(device_t child, char *buf, size_t buflen); int bus_child_location_str(device_t child, char *buf, size_t buflen); +static __inline struct resource * +bus_alloc_resource_any(device_t dev, int type, int *rid, u_int flags) +{ + return (bus_alloc_resource(dev, type, rid, 0ul, ~0ul, 1, flags)); +} + /* * Access functions for device. */ |
