Differential D14397 Diff 39385 sys/dev/vt/hw/vga/vt_vga.c

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sys/dev/vt/hw/vga/vt_vga.c

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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.		* SUCH DAMAGE.
*/		*/

		#include "opt_acpi.h"

#include <sys/cdefs.h>		#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");		__FBSDID("$FreeBSD$");

#include <sys/param.h>		#include <sys/param.h>
#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/systm.h>		#include <sys/systm.h>
#include <sys/bus.h>		#include <sys/bus.h>
#include <sys/module.h>		#include <sys/module.h>
#include <sys/rman.h>		#include <sys/rman.h>

#include <dev/vt/vt.h>		#include <dev/vt/vt.h>
#include <dev/vt/hw/vga/vt_vga_reg.h>		#include <dev/vt/hw/vga/vt_vga_reg.h>
#include <dev/pci/pcivar.h>		#include <dev/pci/pcivar.h>

#include <machine/bus.h>		#include <machine/bus.h>

		#if ((defined(__amd64__) \|\| defined(__i386__)) && defined(DEV_ACPI))
		#include <contrib/dev/acpica/include/acpi.h>
		#endif

struct vga_softc {		struct vga_softc {
bus_space_tag_t vga_fb_tag;		bus_space_tag_t vga_fb_tag;
bus_space_handle_t vga_fb_handle;		bus_space_handle_t vga_fb_handle;
bus_space_tag_t vga_reg_tag;		bus_space_tag_t vga_reg_tag;
bus_space_handle_t vga_reg_handle;		bus_space_handle_t vga_reg_handle;
int vga_wmode;		int vga_wmode;
term_color_t vga_curfg, vga_curbg;		term_color_t vga_curfg, vga_curbg;
boolean_t vga_enabled;		boolean_t vga_enabled;
▲ Show 20 Lines • Show All 1,134 Lines • ▼ Show 20 Lines	if (!textmode) {
* the latches.		* the latches.
*/		*/
sc->vga_curfg = sc->vga_curbg = 0xff;		sc->vga_curfg = sc->vga_curbg = 0xff;
}		}

return (0);		return (0);
}		}

		static bool
		vga_acpi_disabled(void)
		{
		#if ((defined(__amd64__) \|\| defined(__i386__)) && defined(DEV_ACPI))
		ACPI_TABLE_FADT *fadt;
		vm_paddr_t physaddr;
		uint16_t flags;

		physaddr = acpi_find_table(ACPI_SIG_FADT);
		if (physaddr == 0)
		return (false);

		fadt = acpi_map_table(physaddr, ACPI_SIG_FADT);
		if (fadt == NULL) {
		printf("vt_vga: unable to map FADT ACPI table\n");
		return (false);
		}

		flags = fadt->BootFlags;
		acpi_unmap_table(fadt);

		if (flags & ACPI_FADT_NO_VGA)
		return (true);
		#endif

		return (false);
		}

static int		static int
vga_probe(struct vt_device *vd)		vga_probe(struct vt_device *vd)
{		{

return (CN_INTERNAL);		return (vga_acpi_disabled() ? CN_DEAD : CN_INTERNAL);
}		}

static int		static int
vga_init(struct vt_device *vd)		vga_init(struct vt_device *vd)
{		{
struct vga_softc *sc;		struct vga_softc *sc;
int textmode;		int textmode;

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