Differential D687 Diff 4048 head/sys/dev/pci/vga_pci.c

Changeset View

Standalone View

head/sys/dev/pci/vga_pci.c

Show First 20 Lines • Show All 45 Lines • ▼ Show 20 Lines
#if defined(__amd64__) \|\| defined(__i386__)		#if defined(__amd64__) \|\| defined(__i386__)
#include <vm/vm.h>		#include <vm/vm.h>
#include <vm/pmap.h>		#include <vm/pmap.h>
#endif		#endif

#include <dev/pci/pcireg.h>		#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>		#include <dev/pci/pcivar.h>

		#include <compat/x86bios/x86bios.h> /* To re-POST the card. */

struct vga_resource {		struct vga_resource {
struct resource *vr_res;		struct resource *vr_res;
int vr_refs;		int vr_refs;
};		};

struct vga_pci_softc {		struct vga_pci_softc {
device_t vga_msi_child; /* Child driver using MSI. */		device_t vga_msi_child; /* Child driver using MSI. */
struct vga_resource vga_bars[PCIR_MAX_BAR_0 + 1];		struct vga_resource vga_bars[PCIR_MAX_BAR_0 + 1];
▲ Show 20 Lines • Show All 125 Lines • ▼ Show 20 Lines	#endif
* the address we returned previously.		* the address we returned previously.
*/		*/
vr = lookup_res(device_get_softc(dev), PCIR_BIOS);		vr = lookup_res(device_get_softc(dev), PCIR_BIOS);
KASSERT(vr->vr_res != NULL, ("vga_pci_unmap_bios: bios not mapped"));		KASSERT(vr->vr_res != NULL, ("vga_pci_unmap_bios: bios not mapped"));
KASSERT(rman_get_virtual(vr->vr_res) == bios,		KASSERT(rman_get_virtual(vr->vr_res) == bios,
("vga_pci_unmap_bios: mismatch"));		("vga_pci_unmap_bios: mismatch"));
vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, PCIR_BIOS,		vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, PCIR_BIOS,
vr->vr_res);		vr->vr_res);
		}

		int
		vga_pci_repost(device_t dev)
		{
		#if defined(__amd64__) \|\| defined(__i386__)
		x86regs_t regs;

		if (!vga_pci_is_boot_display(dev))
		return (EINVAL);

		if (x86bios_get_orm(VGA_PCI_BIOS_SHADOW_ADDR) == NULL)
		return (ENOTSUP);

		x86bios_init_regs(&regs);

		regs.R_AH = pci_get_bus(dev);
		regs.R_AL = (pci_get_slot(dev) << 3) \| (pci_get_function(dev) & 0x07);
		regs.R_DL = 0x80;

		device_printf(dev, "REPOSTing\n");
		x86bios_call(&regs, X86BIOS_PHYSTOSEG(VGA_PCI_BIOS_SHADOW_ADDR + 3),
		X86BIOS_PHYSTOOFF(VGA_PCI_BIOS_SHADOW_ADDR + 3));

		x86bios_get_intr(0x10);

		return (0);
		#else
		return (ENOTSUP);
		#endif
}		}

static int		static int
vga_pci_probe(device_t dev)		vga_pci_probe(device_t dev)
{		{

switch (pci_get_class(dev)) {		switch (pci_get_class(dev)) {
case PCIC_DISPLAY:		case PCIC_DISPLAY:
▲ Show 20 Lines • Show All 401 Lines • Show Last 20 Lines