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Commit b048a00b authored by Maarten Lankhorst's avatar Maarten Lankhorst
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drm/i915/gen11: Handle watermarks correctly for separate Y/UV planes, v2. 

Skylake style watermarks program the UV parameters into wm->uv_wm,
and have a separate DDB allocation for UV blocks into the same plane.

Gen11 watermarks have a separate plane for Y and UV, with separate
mechanisms. The simplest way to make it work is to keep the current
way of programming watermarks and calculate the Y and UV plane
watermarks from the master plane.

Changes since v1:
- Constify crtc_state where possible.
- Make separate paths for planar formats in skl_build_pipe_wm() (Matt)
- Make separate paths for calculating total data rate. (Matt)
- Make sure UV watermarks are unused on gen11+ by adding a WARN. (Matt)
Signed-off-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181018115134.9061-5-maarten.lankhorst@linux.intel.com
parent 1ab554b0
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Showing with 207 additions and 94 deletions
drivers/gpu/drm/i915/intel_pm.c
View file @ b048a00b
......@@ -3814,7 +3814,7 @@ static u16 intel_get_ddb_size(struct drm_i915_private *dev_priv,
}
static void
skl_ddb_get_pipe_allocation_limits(struct drm_device *dev,
skl_ddb_get_pipe_allocation_limits(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *cstate,
const u64 total_data_rate,
struct skl_ddb_allocation *ddb,
......@@ -3823,7 +3823,6 @@ skl_ddb_get_pipe_allocation_limits(struct drm_device *dev,
{
struct drm_atomic_state *state = cstate->base.state;
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_crtc *for_crtc = cstate->base.crtc;
const struct drm_crtc_state *crtc_state;
const struct drm_crtc *crtc;
......@@ -3945,14 +3944,9 @@ skl_ddb_get_hw_plane_state(struct drm_i915_private *dev_priv,
val & PLANE_CTL_ALPHA_MASK);
val = I915_READ(PLANE_BUF_CFG(pipe, plane_id));
/*
* FIXME: add proper NV12 support for ICL. Avoid reading unclaimed
* registers for now.
*/
if (INTEL_GEN(dev_priv) < 11)
if (fourcc == DRM_FORMAT_NV12 && INTEL_GEN(dev_priv) < 11) {
val2 = I915_READ(PLANE_NV12_BUF_CFG(pipe, plane_id));
if (fourcc == DRM_FORMAT_NV12) {
skl_ddb_entry_init_from_hw(dev_priv,
&ddb->plane[pipe][plane_id], val2);
skl_ddb_entry_init_from_hw(dev_priv,
......@@ -4141,11 +4135,11 @@ int skl_check_pipe_max_pixel_rate(struct intel_crtc *intel_crtc,
static u64
skl_plane_relative_data_rate(const struct intel_crtc_state *cstate,
const struct drm_plane_state *pstate,
const struct intel_plane_state *intel_pstate,
const int plane)
{
struct intel_plane *intel_plane = to_intel_plane(pstate->plane);
struct intel_plane_state *intel_pstate = to_intel_plane_state(pstate);
struct intel_plane *intel_plane =
to_intel_plane(intel_pstate->base.plane);
uint32_t data_rate;
uint32_t width = 0, height = 0;
struct drm_framebuffer *fb;
......@@ -4156,7 +4150,7 @@ skl_plane_relative_data_rate(const struct intel_crtc_state *cstate,
if (!intel_pstate->base.visible)
return 0;
fb = pstate->fb;
fb = intel_pstate->base.fb;
format = fb->format->format;
if (intel_plane->id == PLANE_CURSOR)
......@@ -4206,25 +4200,80 @@ skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate,
drm_atomic_crtc_state_for_each_plane_state(plane, pstate, cstate) {
enum plane_id plane_id = to_intel_plane(plane)->id;
u64 rate;
const struct intel_plane_state *intel_pstate =
to_intel_plane_state(pstate);
/* packed/y */
rate = skl_plane_relative_data_rate(intel_cstate,
pstate, 0);
intel_pstate, 0);
plane_data_rate[plane_id] = rate;
total_data_rate += rate;
/* uv-plane */
rate = skl_plane_relative_data_rate(intel_cstate,
pstate, 1);
intel_pstate, 1);
uv_plane_data_rate[plane_id] = rate;
total_data_rate += rate;
}
return total_data_rate;
}
static u64
icl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate,
u64 *plane_data_rate)
{
struct drm_crtc_state *cstate = &intel_cstate->base;
struct drm_atomic_state *state = cstate->state;
struct drm_plane *plane;
const struct drm_plane_state *pstate;
u64 total_data_rate = 0;
if (WARN_ON(!state))
return 0;
/* Calculate and cache data rate for each plane */
drm_atomic_crtc_state_for_each_plane_state(plane, pstate, cstate) {
const struct intel_plane_state *intel_pstate =
to_intel_plane_state(pstate);
enum plane_id plane_id = to_intel_plane(plane)->id;
u64 rate;
if (!intel_pstate->linked_plane) {
rate = skl_plane_relative_data_rate(intel_cstate,
intel_pstate, 0);
plane_data_rate[plane_id] = rate;
total_data_rate += rate;
} else {
enum plane_id y_plane_id;
/*
* The slave plane might not iterate in
* drm_atomic_crtc_state_for_each_plane_state(),
* and needs the master plane state which may be
* NULL if we try get_new_plane_state(), so we
* always calculate from the master.
*/
if (intel_pstate->slave)
continue;
/* Y plane rate is calculated on the slave */
rate = skl_plane_relative_data_rate(intel_cstate,
intel_pstate, 0);
y_plane_id = intel_pstate->linked_plane->id;
plane_data_rate[y_plane_id] = rate;
total_data_rate += rate;
rate = skl_plane_relative_data_rate(intel_cstate,
intel_pstate, 1);
plane_data_rate[plane_id] = rate;
total_data_rate += rate;
}
}
return total_data_rate;
}
static uint16_t
skl_ddb_min_alloc(const struct drm_plane_state *pstate, const int plane)
{
......@@ -4297,15 +4346,25 @@ skl_ddb_calc_min(const struct intel_crtc_state *cstate, int num_active,
drm_atomic_crtc_state_for_each_plane_state(plane, pstate, &cstate->base) {
enum plane_id plane_id = to_intel_plane(plane)->id;
struct intel_plane_state *plane_state = to_intel_plane_state(pstate);
if (plane_id == PLANE_CURSOR)
continue;
if (!pstate->visible)
/* slave plane must be invisible and calculated from master */
if (!pstate->visible || WARN_ON(plane_state->slave))
continue;
minimum[plane_id] = skl_ddb_min_alloc(pstate, 0);
uv_minimum[plane_id] = skl_ddb_min_alloc(pstate, 1);
if (!plane_state->linked_plane) {
minimum[plane_id] = skl_ddb_min_alloc(pstate, 0);
uv_minimum[plane_id] = skl_ddb_min_alloc(pstate, 1);
} else {
enum plane_id y_plane_id =
plane_state->linked_plane->id;
minimum[y_plane_id] = skl_ddb_min_alloc(pstate, 0);
minimum[plane_id] = skl_ddb_min_alloc(pstate, 1);
}
}
minimum[PLANE_CURSOR] = skl_cursor_allocation(num_active);
......@@ -4317,7 +4376,7 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
{
struct drm_atomic_state *state = cstate->base.state;
struct drm_crtc *crtc = cstate->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
struct skl_ddb_entry *alloc = &cstate->wm.skl.ddb;
......@@ -4343,11 +4402,18 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
return 0;
}
total_data_rate = skl_get_total_relative_data_rate(cstate,
plane_data_rate,
uv_plane_data_rate);
skl_ddb_get_pipe_allocation_limits(dev, cstate, total_data_rate, ddb,
alloc, &num_active);
if (INTEL_GEN(dev_priv) < 11)
total_data_rate =
skl_get_total_relative_data_rate(cstate,
plane_data_rate,
uv_plane_data_rate);
else
total_data_rate =
icl_get_total_relative_data_rate(cstate,
plane_data_rate);
skl_ddb_get_pipe_allocation_limits(dev_priv, cstate, total_data_rate,
ddb, alloc, &num_active);
alloc_size = skl_ddb_entry_size(alloc);
if (alloc_size == 0)
return 0;
......@@ -4417,6 +4483,9 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
uv_plane_blocks = uv_minimum[plane_id];
uv_plane_blocks += div64_u64(alloc_size * uv_data_rate, total_data_rate);
/* Gen11+ uses a separate plane for UV watermarks */
WARN_ON(INTEL_GEN(dev_priv) >= 11 && uv_plane_blocks);
if (uv_data_rate) {
ddb->uv_plane[pipe][plane_id].start = start;
ddb->uv_plane[pipe][plane_id].end =
......@@ -4473,7 +4542,7 @@ static uint_fixed_16_16_t skl_wm_method2(uint32_t pixel_rate,
}
static uint_fixed_16_16_t
intel_get_linetime_us(struct intel_crtc_state *cstate)
intel_get_linetime_us(const struct intel_crtc_state *cstate)
{
uint32_t pixel_rate;
uint32_t crtc_htotal;
......@@ -4517,7 +4586,7 @@ skl_adjusted_plane_pixel_rate(const struct intel_crtc_state *cstate,
static int
skl_compute_plane_wm_params(const struct drm_i915_private *dev_priv,
struct intel_crtc_state *cstate,
const struct intel_crtc_state *cstate,
const struct intel_plane_state *intel_pstate,
struct skl_wm_params *wp, int plane_id)
{
......@@ -4624,7 +4693,7 @@ skl_compute_plane_wm_params(const struct drm_i915_private *dev_priv,
}
static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
struct intel_crtc_state *cstate,
const struct intel_crtc_state *cstate,
const struct intel_plane_state *intel_pstate,
uint16_t ddb_allocation,
int level,
......@@ -4784,38 +4853,22 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
static int
skl_compute_wm_levels(const struct drm_i915_private *dev_priv,
struct skl_ddb_allocation *ddb,
struct intel_crtc_state *cstate,
const struct intel_crtc_state *cstate,
const struct intel_plane_state *intel_pstate,
uint16_t ddb_blocks,
const struct skl_wm_params *wm_params,
struct skl_plane_wm *wm,
int plane_id)
struct skl_wm_level *levels)
{
struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc);
struct drm_plane *plane = intel_pstate->base.plane;
struct intel_plane *intel_plane = to_intel_plane(plane);
uint16_t ddb_blocks;
enum pipe pipe = intel_crtc->pipe;
int level, max_level = ilk_wm_max_level(dev_priv);
enum plane_id intel_plane_id = intel_plane->id;
struct skl_wm_level *result_prev = &levels[0];
int ret;
if (WARN_ON(!intel_pstate->base.fb))
return -EINVAL;
ddb_blocks = plane_id ?
skl_ddb_entry_size(&ddb->uv_plane[pipe][intel_plane_id]) :
skl_ddb_entry_size(&ddb->plane[pipe][intel_plane_id]);
for (level = 0; level <= max_level; level++) {
struct skl_wm_level *result = plane_id ? &wm->uv_wm[level] :
&wm->wm[level];
struct skl_wm_level *result_prev;
if (level)
result_prev = plane_id ? &wm->uv_wm[level - 1] :
&wm->wm[level - 1];
else
result_prev = plane_id ? &wm->uv_wm[0] : &wm->wm[0];
struct skl_wm_level *result = &levels[level];
ret = skl_compute_plane_wm(dev_priv,
cstate,
......@@ -4827,6 +4880,8 @@ skl_compute_wm_levels(const struct drm_i915_private *dev_priv,
result);
if (ret)
return ret;
result_prev = result;
}
if (intel_pstate->base.fb->format->format == DRM_FORMAT_NV12)
......@@ -4836,7 +4891,7 @@ skl_compute_wm_levels(const struct drm_i915_private *dev_priv,
}
static uint32_t
skl_compute_linetime_wm(struct intel_crtc_state *cstate)
skl_compute_linetime_wm(const struct intel_crtc_state *cstate)
{
struct drm_atomic_state *state = cstate->base.state;
struct drm_i915_private *dev_priv = to_i915(state->dev);
......@@ -4858,7 +4913,7 @@ skl_compute_linetime_wm(struct intel_crtc_state *cstate)
return linetime_wm;
}
static void skl_compute_transition_wm(struct intel_crtc_state *cstate,
static void skl_compute_transition_wm(const struct intel_crtc_state *cstate,
struct skl_wm_params *wp,
struct skl_wm_level *wm_l0,
uint16_t ddb_allocation,
......@@ -4925,16 +4980,101 @@ static void skl_compute_transition_wm(struct intel_crtc_state *cstate,
trans_wm->plane_en = false;
}
static int __skl_build_plane_wm_single(struct skl_ddb_allocation *ddb,
struct skl_pipe_wm *pipe_wm,
enum plane_id plane_id,
const struct intel_crtc_state *cstate,
const struct intel_plane_state *pstate,
int color_plane)
{
struct drm_i915_private *dev_priv = to_i915(pstate->base.plane->dev);
struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
enum pipe pipe = to_intel_plane(pstate->base.plane)->pipe;
struct skl_wm_params wm_params;
uint16_t ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][plane_id]);
int ret;
ret = skl_compute_plane_wm_params(dev_priv, cstate, pstate,
&wm_params, color_plane);
if (ret)
return ret;
ret = skl_compute_wm_levels(dev_priv, ddb, cstate, pstate,
ddb_blocks, &wm_params, wm, wm->wm);
if (ret)
return ret;
skl_compute_transition_wm(cstate, &wm_params, &wm->wm[0],
ddb_blocks, &wm->trans_wm);
return 0;
}
static int skl_build_plane_wm_single(struct skl_ddb_allocation *ddb,
struct skl_pipe_wm *pipe_wm,
const struct intel_crtc_state *cstate,
const struct intel_plane_state *pstate)
{
enum plane_id plane_id = to_intel_plane(pstate->base.plane)->id;
return __skl_build_plane_wm_single(ddb, pipe_wm, plane_id, cstate, pstate, 0);
}
static int skl_build_plane_wm_planar(struct skl_ddb_allocation *ddb,
struct skl_pipe_wm *pipe_wm,
const struct intel_crtc_state *cstate,
const struct intel_plane_state *pstate)
{
struct intel_plane *plane = to_intel_plane(pstate->base.plane);
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum plane_id plane_id = plane->id;
struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
struct skl_wm_params wm_params;
enum pipe pipe = plane->pipe;
uint16_t ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][plane_id]);
int ret;
ret = __skl_build_plane_wm_single(ddb, pipe_wm, plane_id, cstate, pstate, 0);
if (ret)
return ret;
/* uv plane watermarks must also be validated for NV12/Planar */
ddb_blocks = skl_ddb_entry_size(&ddb->uv_plane[pipe][plane_id]);
ret = skl_compute_plane_wm_params(dev_priv, cstate, pstate, &wm_params, 1);
if (ret)
return ret;
return skl_compute_wm_levels(dev_priv, ddb, cstate, pstate,
ddb_blocks, &wm_params, wm, wm->uv_wm);
}
static int icl_build_plane_wm_planar(struct skl_ddb_allocation *ddb,
struct skl_pipe_wm *pipe_wm,
const struct intel_crtc_state *cstate,
const struct intel_plane_state *pstate)
{
int ret;
enum plane_id y_plane_id = pstate->linked_plane->id;
enum plane_id uv_plane_id = to_intel_plane(pstate->base.plane)->id;
ret = __skl_build_plane_wm_single(ddb, pipe_wm, y_plane_id,
cstate, pstate, 0);
if (ret)
return ret;
return __skl_build_plane_wm_single(ddb, pipe_wm, uv_plane_id,
cstate, pstate, 1);
}
static int skl_build_pipe_wm(struct intel_crtc_state *cstate,
struct skl_ddb_allocation *ddb,
struct skl_pipe_wm *pipe_wm)
{
struct drm_device *dev = cstate->base.crtc->dev;
struct drm_crtc_state *crtc_state = &cstate->base;
const struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_plane *plane;
const struct drm_plane_state *pstate;
struct skl_plane_wm *wm;
int ret;
/*
......@@ -4946,44 +5086,21 @@ static int skl_build_pipe_wm(struct intel_crtc_state *cstate,
drm_atomic_crtc_state_for_each_plane_state(plane, pstate, crtc_state) {
const struct intel_plane_state *intel_pstate =
to_intel_plane_state(pstate);
enum plane_id plane_id = to_intel_plane(plane)->id;
struct skl_wm_params wm_params;
enum pipe pipe = to_intel_crtc(cstate->base.crtc)->pipe;
uint16_t ddb_blocks;
wm = &pipe_wm->planes[plane_id];
ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][plane_id]);
/* Watermarks calculated in master */
if (intel_pstate->slave)
continue;
ret = skl_compute_plane_wm_params(dev_priv, cstate,
intel_pstate, &wm_params, 0);
if (ret)
return ret;
if (intel_pstate->linked_plane)
ret = icl_build_plane_wm_planar(ddb, pipe_wm, cstate, intel_pstate);
else if (intel_pstate->base.fb &&
intel_pstate->base.fb->format->format == DRM_FORMAT_NV12)
ret = skl_build_plane_wm_planar(ddb, pipe_wm, cstate, intel_pstate);
else
ret = skl_build_plane_wm_single(ddb, pipe_wm, cstate, intel_pstate);
ret = skl_compute_wm_levels(dev_priv, ddb, cstate,
intel_pstate, &wm_params, wm, 0);
if (ret)
return ret;
skl_compute_transition_wm(cstate, &wm_params, &wm->wm[0],
ddb_blocks, &wm->trans_wm);
/* uv plane watermarks must also be validated for NV12/Planar */
if (wm_params.is_planar) {
memset(&wm_params, 0, sizeof(struct skl_wm_params));
wm->is_planar = true;
ret = skl_compute_plane_wm_params(dev_priv, cstate,
intel_pstate,
&wm_params, 1);
if (ret)
return ret;
ret = skl_compute_wm_levels(dev_priv, ddb, cstate,
intel_pstate, &wm_params,
wm, 1);
if (ret)
return ret;
}
}
pipe_wm->linetime = skl_compute_linetime_wm(cstate);
......@@ -5034,12 +5151,7 @@ static void skl_write_plane_wm(struct intel_crtc *intel_crtc,
skl_write_wm_level(dev_priv, PLANE_WM_TRANS(pipe, plane_id),
&wm->trans_wm);
/* FIXME: add proper NV12 support for ICL. */
if (INTEL_GEN(dev_priv) >= 11)
return skl_ddb_entry_write(dev_priv,
PLANE_BUF_CFG(pipe, plane_id),
&ddb->plane[pipe][plane_id]);
if (wm->is_planar) {
if (wm->is_planar && INTEL_GEN(dev_priv) < 11) {
skl_ddb_entry_write(dev_priv, PLANE_BUF_CFG(pipe, plane_id),
&ddb->uv_plane[pipe][plane_id]);
skl_ddb_entry_write(dev_priv,
......@@ -5048,7 +5160,8 @@ static void skl_write_plane_wm(struct intel_crtc *intel_crtc,
} else {
skl_ddb_entry_write(dev_priv, PLANE_BUF_CFG(pipe, plane_id),
&ddb->plane[pipe][plane_id]);
I915_WRITE(PLANE_NV12_BUF_CFG(pipe, plane_id), 0x0);
if (INTEL_GEN(dev_priv) < 11)
I915_WRITE(PLANE_NV12_BUF_CFG(pipe, plane_id), 0x0);
}
}
......
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