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Add acpi_bus_alloc_gas() for allocating a memory or IO resource from its

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Generic Address Structure.
This commit is contained in:
njl 2003-11-15 19:18:29 +00:00
parent 1f1358c8e0
commit 0fd0be9b4c
1 changed files with 28 additions and 1 deletions
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29
sys/dev/acpica/acpi.c
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@ -46,6 +46,8 @@
#include <machine/clock.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include "acpi.h"
@ -755,7 +757,32 @@ acpi_release_resource(device_t bus, device_t child, int type, int rid, struct re
struct acpi_device *ad = device_get_ivars(child);
struct resource_list *rl = &ad->ad_rl;
return(resource_list_release(rl, bus, child, type, rid, r));
return (resource_list_release(rl, bus, child, type, rid, r));
}
/* Allocate an IO port or memory resource, given its GAS. */
struct resource *
acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
{
int type;
if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
gas->RegisterBitWidth < 8)
return (NULL);
switch (gas->AddressSpaceId) {
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
type = SYS_RES_MEMORY;
break;
case ACPI_ADR_SPACE_SYSTEM_IO:
type = SYS_RES_IOPORT;
break;
default:
return (NULL);
}
bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
return (bus_alloc_resource(dev, type, rid, 0, ~0, 1, RF_ACTIVE));
}
/*