3.16.42-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Michel Dänzer <michel.daen...@amd.com> commit 6b16cf7785a4200b1bddf4f70c9dda2efc49e278 upstream. Fixes hangs in that case under some circumstances. v2: * Only use non-0 x/yorigin if the cursor is (partially) outside of the top/left edge of the total surface with AVIVO/DCE Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1000433 Signed-off-by: Michel Dänzer <michel.daen...@amd.com> Reviewed-by: Alex Deucher <alexander.deuc...@amd.com> (v1) Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> [bwh: Backported to 3.16: - Drop changes to radeon_crtc_cursor_set2() - Adjust context] Signed-off-by: Ben Hutchings <b...@decadent.org.uk> --- --- a/drivers/gpu/drm/radeon/radeon_cursor.c +++ b/drivers/gpu/drm/radeon/radeon_cursor.c @@ -90,6 +90,9 @@ static void radeon_show_cursor(struct dr struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); struct radeon_device *rdev = crtc->dev->dev_private; + if (radeon_crtc->cursor_out_of_bounds) + return; + if (ASIC_IS_DCE4(rdev)) { WREG32(RADEON_MM_INDEX, EVERGREEN_CUR_CONTROL + radeon_crtc->crtc_offset); WREG32(RADEON_MM_DATA, EVERGREEN_CURSOR_EN | @@ -228,16 +231,17 @@ int radeon_crtc_cursor_move(struct drm_c x += crtc->x; y += crtc->y; } - DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y); - if (x < 0) { + if (x < 0) xorigin = min(-x, radeon_crtc->max_cursor_width - 1); - x = 0; - } - if (y < 0) { + if (y < 0) yorigin = min(-y, radeon_crtc->max_cursor_height - 1); - y = 0; + + if (!ASIC_IS_AVIVO(rdev)) { + x += crtc->x; + y += crtc->y; } + DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y); /* fixed on DCE6 and newer */ if (ASIC_IS_AVIVO(rdev) && !ASIC_IS_DCE6(rdev)) { @@ -260,27 +264,31 @@ int radeon_crtc_cursor_move(struct drm_c if (i > 1) { int cursor_end, frame_end; - cursor_end = x - xorigin + w; + cursor_end = x + w; frame_end = crtc->x + crtc->mode.crtc_hdisplay; if (cursor_end >= frame_end) { w = w - (cursor_end - frame_end); if (!(frame_end & 0x7f)) w--; - } else { - if (!(cursor_end & 0x7f)) - w--; + } else if (cursor_end <= 0) { + goto out_of_bounds; + } else if (!(cursor_end & 0x7f)) { + w--; } if (w <= 0) { - w = 1; - cursor_end = x - xorigin + w; - if (!(cursor_end & 0x7f)) { - x--; - WARN_ON_ONCE(x < 0); - } + goto out_of_bounds; } } } + if (x <= (crtc->x - w) || y <= (crtc->y - radeon_crtc->cursor_height) || + x >= (crtc->x + crtc->mode.crtc_hdisplay) || + y >= (crtc->y + crtc->mode.crtc_vdisplay)) + goto out_of_bounds; + + x += xorigin; + y += yorigin; + radeon_lock_cursor(crtc, true); if (ASIC_IS_DCE4(rdev)) { WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y); @@ -293,6 +301,9 @@ int radeon_crtc_cursor_move(struct drm_c WREG32(AVIVO_D1CUR_SIZE + radeon_crtc->crtc_offset, ((w - 1) << 16) | (radeon_crtc->cursor_height - 1)); } else { + x -= crtc->x; + y -= crtc->y; + if (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN) y *= 2; @@ -310,5 +321,18 @@ int radeon_crtc_cursor_move(struct drm_c } radeon_lock_cursor(crtc, false); + if (radeon_crtc->cursor_out_of_bounds) { + radeon_crtc->cursor_out_of_bounds = false; + if (radeon_crtc->cursor_bo) + radeon_show_cursor(crtc); + } + + return 0; + + out_of_bounds: + if (!radeon_crtc->cursor_out_of_bounds) { + radeon_hide_cursor(crtc); + radeon_crtc->cursor_out_of_bounds = true; + } return 0; } --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -318,6 +318,7 @@ struct radeon_crtc { u16 lut_r[256], lut_g[256], lut_b[256]; bool enabled; bool can_tile; + bool cursor_out_of_bounds; uint32_t crtc_offset; struct drm_gem_object *cursor_bo; uint64_t cursor_addr;
