C++ (Cpp) AGP_CAPID_GET_CAP_IDの例

コード例 #1

ファイル: drm_agpsupport.c プロジェクト: Ionic/nx-libs

/* Returns 1 if AGP or 0 if not. */
static int
drm_device_find_capability(drm_device_t *dev, int cap)
{
	int ret;

	if (dev->driver.device_is_agp != NULL) {
		ret = (*dev->driver.device_is_agp)(dev);
		
		if (ret != DRM_MIGHT_BE_AGP) {
			return ret == 2;
		}
	}

#ifdef __FreeBSD__
	/* Code taken from agp.c.  IWBNI that was a public interface. */
	u_int32_t status;
	u_int8_t ptr, next;

	/*
	 * Check the CAP_LIST bit of the PCI status register first.
	 */
	status = pci_read_config(dev->device, PCIR_STATUS, 2);
	if (!(status & 0x10))
		return 0;

	/*
	 * Traverse the capabilities list.
	 */
	for (ptr = pci_read_config(dev->device, AGP_CAPPTR, 1);
	     ptr != 0;
	     ptr = next) {
		u_int32_t capid = pci_read_config(dev->device, ptr, 4);
		next = AGP_CAPID_GET_NEXT_PTR(capid);

		/*
		 * If this capability entry ID is cap, then we are done.
		 */
		if (AGP_CAPID_GET_CAP_ID(capid) == cap)
			return 1;
	}

	return 0;
#else
	/* XXX: fill me in for non-FreeBSD */
	return 1;
#endif
}

コード例 #2

ファイル: drm_agpsupport.c プロジェクト: edgar-pek/PerspicuOS

/* Returns 1 if AGP or 0 if not. */
static int
drm_device_find_capability(struct drm_device *dev, int cap)
{
#if __FreeBSD_version >= 602102

	return (pci_find_cap(dev->device, cap, NULL) == 0);
#else
	/* Code taken from agp.c.  IWBNI that was a public interface. */
	u_int32_t status;
	u_int8_t ptr, next;

	/*
	 * Check the CAP_LIST bit of the PCI status register first.
	 */
	status = pci_read_config(dev->device, PCIR_STATUS, 2);
	if (!(status & 0x10))
		return 0;

	/*
	 * Traverse the capabilities list.
	 */
	for (ptr = pci_read_config(dev->device, AGP_CAPPTR, 1);
	     ptr != 0;
	     ptr = next) {
		u_int32_t capid = pci_read_config(dev->device, ptr, 4);
		next = AGP_CAPID_GET_NEXT_PTR(capid);

		/*
		 * If this capability entry ID is cap, then we are done.
		 */
		if (AGP_CAPID_GET_CAP_ID(capid) == cap)
			return 1;
	}

	return 0;
#endif
}