From bb05ccd66342643b1cd9a0a48cec3ebdc3eed511 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Tue, 21 Feb 2023 14:38:32 +0100 Subject: [PATCH] drm/vc4: Add additional warn_on Some code path in vc4 are conditional to a generation and cannot be executed on others. Let's put a WARN_ON if that ever happens. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_hvs.c | 32 ++++++++++++++++++++++++++++++-- drivers/gpu/drm/vc4/vc4_kms.c | 6 ++++++ drivers/gpu/drm/vc4/vc4_plane.c | 19 +++++++++++++++++++ 3 files changed, 55 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/vc4/vc4_hvs.c +++ b/drivers/gpu/drm/vc4/vc4_hvs.c @@ -417,12 +417,15 @@ static int vc4_hvs_upload_linear_kernel( static void vc4_hvs_lut_load(struct vc4_hvs *hvs, struct vc4_crtc *vc4_crtc) { - struct drm_device *drm = &hvs->vc4->base; + struct vc4_dev *vc4 = hvs->vc4; + struct drm_device *drm = &vc4->base; struct drm_crtc *crtc = &vc4_crtc->base; struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); int idx; u32 i; + WARN_ON_ONCE(vc4->gen > VC4_GEN_5); + if (!drm_dev_enter(drm, &idx)) return; @@ -758,6 +761,8 @@ u8 vc4_hvs_get_fifo_frame_count(struct v u8 field = 0; int idx; + WARN_ON_ONCE(vc4->gen > VC4_GEN_6); + if (!drm_dev_enter(drm, &idx)) return 0; @@ -791,6 +796,8 @@ int vc4_hvs_get_fifo_from_output(struct u32 reg; int ret; + WARN_ON_ONCE(vc4->gen > VC4_GEN_6); + switch (vc4->gen) { case VC4_GEN_4: return output; @@ -880,6 +887,8 @@ static int vc4_hvs_init_channel(struct v u32 dispctrl; int idx; + WARN_ON_ONCE(vc4->gen > VC4_GEN_5); + if (!drm_dev_enter(drm, &idx)) return -ENODEV; @@ -947,6 +956,8 @@ static int vc6_hvs_init_channel(struct v u32 disp_ctrl1; int idx; + WARN_ON_ONCE(vc4->gen != VC4_GEN_6); + if (!drm_dev_enter(drm, &idx)) return -ENODEV; @@ -972,9 +983,12 @@ static int vc6_hvs_init_channel(struct v static void __vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int chan) { - struct drm_device *drm = &hvs->vc4->base; + struct vc4_dev *vc4 = hvs->vc4; + struct drm_device *drm = &vc4->base; int idx; + WARN_ON_ONCE(vc4->gen > VC4_GEN_5); + if (!drm_dev_enter(drm, &idx)) return; @@ -1007,6 +1021,8 @@ static void __vc6_hvs_stop_channel(struc struct drm_device *drm = &vc4->base; int idx; + WARN_ON_ONCE(vc4->gen != VC4_GEN_6); + if (!drm_dev_enter(drm, &idx)) return; @@ -1234,6 +1250,8 @@ void vc4_hvs_atomic_flush(struct drm_crt bool found = false; int idx; + WARN_ON_ONCE(vc4->gen > VC4_GEN_6); + if (!drm_dev_enter(dev, &idx)) { vc4_crtc_send_vblank(crtc); return; @@ -1324,6 +1342,8 @@ void vc4_hvs_atomic_flush(struct drm_crt if (crtc->state->color_mgmt_changed) { u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(channel)); + WARN_ON_ONCE(vc4->gen > VC4_GEN_5); + if (crtc->state->gamma_lut) { if (vc4->gen == VC4_GEN_4) { vc4_hvs_update_gamma_lut(hvs, vc4_crtc); @@ -1363,6 +1383,8 @@ void vc4_hvs_mask_underrun(struct vc4_hv u32 dispctrl; int idx; + WARN_ON(vc4->gen > VC4_GEN_5); + if (!drm_dev_enter(drm, &idx)) return; @@ -1383,6 +1405,8 @@ void vc4_hvs_unmask_underrun(struct vc4_ u32 dispctrl; int idx; + WARN_ON(vc4->gen > VC4_GEN_5); + if (!drm_dev_enter(drm, &idx)) return; @@ -1417,6 +1441,8 @@ static irqreturn_t vc4_hvs_irq_handler(i u32 status; u32 dspeislur; + WARN_ON(vc4->gen > VC4_GEN_5); + /* * NOTE: We don't need to protect the register access using * drm_dev_enter() there because the interrupt handler lifetime @@ -1466,6 +1492,8 @@ static irqreturn_t vc6_hvs_eof_irq_handl struct vc4_hvs *hvs = vc4->hvs; unsigned int i; + WARN_ON(vc4->gen < VC4_GEN_6); + for (i = 0; i < HVS_NUM_CHANNELS; i++) { if (!hvs->eof_irq[i].enabled) continue; --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -147,6 +147,8 @@ vc4_ctm_commit(struct vc4_dev *vc4, stru if (vc4->firmware_kms) return; + WARN_ON_ONCE(vc4->gen > VC4_GEN_5); + if (ctm_state->fifo) { HVS_WRITE(SCALER_OLEDCOEF2, VC4_SET_FIELD(vc4_ctm_s31_32_to_s0_9(ctm->matrix[0]), @@ -222,6 +224,8 @@ static void vc4_hvs_pv_muxing_commit(str struct drm_crtc *crtc; unsigned int i; + WARN_ON_ONCE(vc4->gen != VC4_GEN_4); + for_each_new_crtc_in_state(state, crtc, crtc_state, i) { struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state); @@ -265,6 +269,8 @@ static void vc5_hvs_pv_muxing_commit(str unsigned int i; u32 reg; + WARN_ON_ONCE(vc4->gen != VC4_GEN_5); + for_each_new_crtc_in_state(state, crtc, crtc_state, i) { struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -555,8 +555,11 @@ static int vc4_plane_setup_clipping_and_ static void vc4_write_tpz(struct vc4_plane_state *vc4_state, u32 src, u32 dst) { + struct vc4_dev *vc4 = to_vc4_dev(vc4_state->base.plane->dev); u32 scale, recip; + WARN_ON_ONCE(vc4->gen > VC4_GEN_6); + scale = src / dst; /* The specs note that while the reciprocal would be defined @@ -581,10 +584,13 @@ static void vc4_write_tpz(struct vc4_pla static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst, u32 xy, int channel, int chroma_offset) { + struct vc4_dev *vc4 = to_vc4_dev(vc4_state->base.plane->dev); u32 scale = src / dst; s32 offset, offset2; s32 phase; + WARN_ON_ONCE(vc4->gen > VC4_GEN_6); + /* Start the phase at 1/2 pixel from the 1st pixel at src_x. 1/4 pixel for YUV, plus the offset for chroma siting */ if (channel) { @@ -801,8 +807,11 @@ static size_t vc6_upm_size(const struct static void vc4_write_scaling_parameters(struct drm_plane_state *state, int channel) { + struct vc4_dev *vc4 = to_vc4_dev(state->plane->dev); struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); + WARN_ON_ONCE(vc4->gen > VC4_GEN_6); + /* Ch0 H-PPF Word 0: Scaling Parameters */ if (vc4_state->x_scaling[channel] == VC4_SCALING_PPF) { vc4_write_ppf(vc4_state, @@ -1040,6 +1049,11 @@ static const u32 colorspace_coeffs[2][DR static u32 vc4_hvs4_get_alpha_blend_mode(struct drm_plane_state *state) { + struct drm_device *dev = state->state->dev; + struct vc4_dev *vc4 = to_vc4_dev(dev); + + WARN_ON_ONCE(vc4->gen != VC4_GEN_4); + if (!state->fb->format->has_alpha) return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED, SCALER_POS2_ALPHA_MODE); @@ -1061,6 +1075,11 @@ static u32 vc4_hvs4_get_alpha_blend_mode static u32 vc4_hvs5_get_alpha_blend_mode(struct drm_plane_state *state) { + struct drm_device *dev = state->state->dev; + struct vc4_dev *vc4 = to_vc4_dev(dev); + + WARN_ON_ONCE(vc4->gen != VC4_GEN_5 && vc4->gen != VC4_GEN_6); + if (!state->fb->format->has_alpha) return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED, SCALER5_CTL2_ALPHA_MODE);