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path: root/drivers/gpu/drm/radeon/radeon_bios.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_bios.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_bios.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 8f2c7b50dcf..1aba85cad1a 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -131,6 +131,45 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
return true;
}
+static bool ni_read_disabled_bios(struct radeon_device *rdev)
+{
+ u32 bus_cntl;
+ u32 d1vga_control;
+ u32 d2vga_control;
+ u32 vga_render_control;
+ u32 rom_cntl;
+ bool r;
+
+ bus_cntl = RREG32(R600_BUS_CNTL);
+ d1vga_control = RREG32(AVIVO_D1VGA_CONTROL);
+ d2vga_control = RREG32(AVIVO_D2VGA_CONTROL);
+ vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL);
+ rom_cntl = RREG32(R600_ROM_CNTL);
+
+ /* enable the rom */
+ WREG32(R600_BUS_CNTL, (bus_cntl & ~R600_BIOS_ROM_DIS));
+ /* Disable VGA mode */
+ WREG32(AVIVO_D1VGA_CONTROL,
+ (d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
+ AVIVO_DVGA_CONTROL_TIMING_SELECT)));
+ WREG32(AVIVO_D2VGA_CONTROL,
+ (d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
+ AVIVO_DVGA_CONTROL_TIMING_SELECT)));
+ WREG32(AVIVO_VGA_RENDER_CONTROL,
+ (vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK));
+ WREG32(R600_ROM_CNTL, rom_cntl | R600_SCK_OVERWRITE);
+
+ r = radeon_read_bios(rdev);
+
+ /* restore regs */
+ WREG32(R600_BUS_CNTL, bus_cntl);
+ WREG32(AVIVO_D1VGA_CONTROL, d1vga_control);
+ WREG32(AVIVO_D2VGA_CONTROL, d2vga_control);
+ WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control);
+ WREG32(R600_ROM_CNTL, rom_cntl);
+ return r;
+}
+
static bool r700_read_disabled_bios(struct radeon_device *rdev)
{
uint32_t viph_control;
@@ -416,6 +455,8 @@ static bool radeon_read_disabled_bios(struct radeon_device *rdev)
{
if (rdev->flags & RADEON_IS_IGP)
return igp_read_bios_from_vram(rdev);
+ else if (rdev->family >= CHIP_BARTS)
+ return ni_read_disabled_bios(rdev);
else if (rdev->family >= CHIP_RV770)
return r700_read_disabled_bios(rdev);
else if (rdev->family >= CHIP_R600)