[PATCH 3/9] drm/i915: Use enum plane_id in SKL wm code

ville.syrjala
2016-11-22T16:02:40Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Nuke skl_wm_plane_id() and just use the new intel_plane->id.

v2: Convert skl_write_plane_wm() as well
v3: Convert skl_pipe_wm_get_hw_state() correctly
v4: Rebase due to changes in the wm code
Drop the cursor FIXME from the total data rate calc (Paulo)
Use the "[PLANE:%d:%s]" format in debug print (Paulo)

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Lyude <cpaul@redhat.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 180 +++++++++++++++++-----------------------
1 file changed, 77 insertions(+), 103 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index bbb1eaf1e6db..e6351445016d 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2867,28 +2867,6 @@ bool ilk_disable_lp_wm(struct drm_device *dev)
#define SKL_SAGV_BLOCK_TIME 30 /* µs */

/*
- * Return the index of a plane in the SKL DDB and wm result arrays. Primary
- * plane is always in slot 0, cursor is always in slot I915_MAX_PLANES-1, and
- * other universal planes are in indices 1..n. Note that this may leave unused
- * indices between the top "sprite" plane and the cursor.
- */
-static int
-skl_wm_plane_id(const struct intel_plane *plane)
-{
- switch (plane->base.type) {
- case DRM_PLANE_TYPE_PRIMARY:
- return 0;
- case DRM_PLANE_TYPE_CURSOR:
- return PLANE_CURSOR;
- case DRM_PLANE_TYPE_OVERLAY:
- return plane->plane + 1;
- default:
- MISSING_CASE(plane->base.type);
- return plane->plane;
- }
-}
-
-/*
* FIXME: We still don't have the proper code detect if we need to apply the WA,
* so assume we'll always need it in order to avoid underruns.
*/
@@ -3026,7 +3004,6 @@ bool intel_can_enable_sagv(struct drm_atomic_state *state)
struct intel_crtc *crtc;
struct intel_plane *plane;
struct intel_crtc_state *cstate;
- struct skl_plane_wm *wm;
enum pipe pipe;
int level, latency;

@@ -3053,7 +3030,8 @@ bool intel_can_enable_sagv(struct drm_atomic_state *state)
return false;

for_each_intel_plane_on_crtc(dev, crtc, plane) {
- wm = &cstate->wm.skl.optimal.planes[skl_wm_plane_id(plane)];
+ struct skl_plane_wm *wm =
+ &cstate->wm.skl.optimal.planes[plane->id];

/* Skip this plane if it's not enabled */
if (!wm->wm[0].plane_en)
@@ -3156,28 +3134,29 @@ static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
struct skl_ddb_allocation *ddb /* out */)
{
- enum pipe pipe;
- int plane;
- u32 val;
+ struct intel_crtc *crtc;

memset(ddb, 0, sizeof(*ddb));

- for_each_pipe(dev_priv, pipe) {
+ for_each_intel_crtc(&dev_priv->drm, crtc) {
enum intel_display_power_domain power_domain;
+ enum plane_id plane_id;
+ enum pipe pipe = crtc->pipe;

power_domain = POWER_DOMAIN_PIPE(pipe);
if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
continue;

- for_each_universal_plane(dev_priv, pipe, plane) {
- val = I915_READ(PLANE_BUF_CFG(pipe, plane));
- skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane],
- val);
- }
+ for_each_plane_id_on_crtc(crtc, plane_id) {
+ u32 val;
+
+ if (plane_id != PLANE_CURSOR)
+ val = I915_READ(PLANE_BUF_CFG(pipe, plane_id));
+ else
+ val = I915_READ(CUR_BUF_CFG(pipe));

- val = I915_READ(CUR_BUF_CFG(pipe));
- skl_ddb_entry_init_from_hw(&ddb->plane[pipe][PLANE_CURSOR],
- val);
+ skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane_id], val);
+ }

intel_display_power_put(dev_priv, power_domain);
}
@@ -3278,30 +3257,28 @@ skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate,
struct drm_crtc_state *cstate = &intel_cstate->base;
struct drm_atomic_state *state = cstate->state;
struct drm_plane *plane;
- const struct intel_plane *intel_plane;
const struct drm_plane_state *pstate;
- unsigned int rate, total_data_rate = 0;
- int id;
+ unsigned int 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) {
- id = skl_wm_plane_id(to_intel_plane(plane));
- intel_plane = to_intel_plane(plane);
+ enum plane_id plane_id = to_intel_plane(plane)->id;
+ unsigned int rate;

/* packed/uv */
rate = skl_plane_relative_data_rate(intel_cstate,
pstate, 0);
- plane_data_rate[id] = rate;
+ plane_data_rate[plane_id] = rate;

total_data_rate += rate;

/* y-plane */
rate = skl_plane_relative_data_rate(intel_cstate,
pstate, 1);
- plane_y_data_rate[id] = rate;
+ plane_y_data_rate[plane_id] = rate;

total_data_rate += rate;
}
@@ -3380,17 +3357,16 @@ skl_ddb_calc_min(const struct intel_crtc_state *cstate, int num_active,
struct drm_plane *plane;

drm_atomic_crtc_state_for_each_plane_state(plane, pstate, &cstate->base) {
- struct intel_plane *intel_plane = to_intel_plane(plane);
- int id = skl_wm_plane_id(intel_plane);
+ enum plane_id plane_id = to_intel_plane(plane)->id;

- if (id == PLANE_CURSOR)
+ if (plane_id == PLANE_CURSOR)
continue;

if (!pstate->visible)
continue;

- minimum[id] = skl_ddb_min_alloc(pstate, 0);
- y_minimum[id] = skl_ddb_min_alloc(pstate, 1);
+ minimum[plane_id] = skl_ddb_min_alloc(pstate, 0);
+ y_minimum[plane_id] = skl_ddb_min_alloc(pstate, 1);
}

minimum[PLANE_CURSOR] = skl_cursor_allocation(num_active);
@@ -3410,8 +3386,8 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
uint16_t minimum[I915_MAX_PLANES] = {};
uint16_t y_minimum[I915_MAX_PLANES] = {};
unsigned int total_data_rate;
+ enum plane_id plane_id;
int num_active;
- int id, i;
unsigned plane_data_rate[I915_MAX_PLANES] = {};
unsigned plane_y_data_rate[I915_MAX_PLANES] = {};

@@ -3442,9 +3418,9 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
* proportional to the data rate.
*/

- for (i = 0; i < I915_MAX_PLANES; i++) {
- alloc_size -= minimum[i];
- alloc_size -= y_minimum[i];
+ for_each_plane_id_on_crtc(intel_crtc, plane_id) {
+ alloc_size -= minimum[plane_id];
+ alloc_size -= y_minimum[plane_id];
}

ddb->plane[pipe][PLANE_CURSOR].start = alloc->end - minimum[PLANE_CURSOR];
@@ -3463,28 +3439,28 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
return 0;

start = alloc->start;
- for (id = 0; id < I915_MAX_PLANES; id++) {
+ for_each_plane_id_on_crtc(intel_crtc, plane_id) {
unsigned int data_rate, y_data_rate;
uint16_t plane_blocks, y_plane_blocks = 0;

- if (id == PLANE_CURSOR)
+ if (plane_id == PLANE_CURSOR)
continue;

- data_rate = plane_data_rate[id];
+ data_rate = plane_data_rate[plane_id];

/*
* allocation for (packed formats) or (uv-plane part of planar format):
* promote the expression to 64 bits to avoid overflowing, the
* result is < available as data_rate / total_data_rate < 1
*/
- plane_blocks = minimum[id];
+ plane_blocks = minimum[plane_id];
plane_blocks += div_u64((uint64_t)alloc_size * data_rate,
total_data_rate);

/* Leave disabled planes at (0,0) */
if (data_rate) {
- ddb->plane[pipe][id].start = start;
- ddb->plane[pipe][id].end = start + plane_blocks;
+ ddb->plane[pipe][plane_id].start = start;
+ ddb->plane[pipe][plane_id].end = start + plane_blocks;
}

start += plane_blocks;
@@ -3492,15 +3468,15 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
/*
* allocation for y_plane part of planar format:
*/
- y_data_rate = plane_y_data_rate[id];
+ y_data_rate = plane_y_data_rate[plane_id];

- y_plane_blocks = y_minimum[id];
+ y_plane_blocks = y_minimum[plane_id];
y_plane_blocks += div_u64((uint64_t)alloc_size * y_data_rate,
total_data_rate);

if (y_data_rate) {
- ddb->y_plane[pipe][id].start = start;
- ddb->y_plane[pipe][id].end = start + y_plane_blocks;
+ ddb->y_plane[pipe][plane_id].start = start;
+ ddb->y_plane[pipe][plane_id].end = start + y_plane_blocks;
}

start += y_plane_blocks;
@@ -3692,12 +3668,12 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
if (level) {
return 0;
} else {
+ struct drm_plane *plane = pstate->plane;
+
DRM_DEBUG_KMS("Requested display configuration exceeds system watermark limitations\n");
- DRM_DEBUG_KMS("Plane %d.%d: blocks required = %u/%u, lines required = %u/31\n",
- to_intel_crtc(cstate->base.crtc)->pipe,
- skl_wm_plane_id(to_intel_plane(pstate->plane)),
+ DRM_DEBUG_KMS("[PLANE:%d:%s] blocks required = %u/%u, lines required = %u/31\n",
+ plane->base.id, plane->name,
res_blocks, ddb_allocation, res_lines);
-
return -EINVAL;
}
}
@@ -3724,7 +3700,6 @@ skl_compute_wm_level(const struct drm_i915_private *dev_priv,
uint16_t ddb_blocks;
enum pipe pipe = intel_crtc->pipe;
int ret;
- int i = skl_wm_plane_id(intel_plane);

if (state)
intel_pstate =
@@ -3747,7 +3722,7 @@ skl_compute_wm_level(const struct drm_i915_private *dev_priv,

WARN_ON(!intel_pstate->base.fb);

- ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][i]);
+ ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][intel_plane->id]);

ret = skl_compute_plane_wm(dev_priv,
cstate,
@@ -3810,7 +3785,7 @@ static int skl_build_pipe_wm(struct intel_crtc_state *cstate,
for_each_intel_plane_mask(&dev_priv->drm,
intel_plane,
cstate->base.plane_mask) {
- wm = &pipe_wm->planes[skl_wm_plane_id(intel_plane)];
+ wm = &pipe_wm->planes[intel_plane->id];

for (level = 0; level <= max_level; level++) {
ret = skl_compute_wm_level(dev_priv, ddb, cstate,
@@ -3854,7 +3829,7 @@ static void skl_write_wm_level(struct drm_i915_private *dev_priv,
void skl_write_plane_wm(struct intel_crtc *intel_crtc,
const struct skl_plane_wm *wm,
const struct skl_ddb_allocation *ddb,
- int plane)
+ enum plane_id plane_id)
{
struct drm_crtc *crtc = &intel_crtc->base;
struct drm_device *dev = crtc->dev;
@@ -3863,16 +3838,16 @@ void skl_write_plane_wm(struct intel_crtc *intel_crtc,
enum pipe pipe = intel_crtc->pipe;

for (level = 0; level <= max_level; level++) {
- skl_write_wm_level(dev_priv, PLANE_WM(pipe, plane, level),
+ skl_write_wm_level(dev_priv, PLANE_WM(pipe, plane_id, level),
&wm->wm[level]);
}
- skl_write_wm_level(dev_priv, PLANE_WM_TRANS(pipe, plane),
+ skl_write_wm_level(dev_priv, PLANE_WM_TRANS(pipe, plane_id),
&wm->trans_wm);

- skl_ddb_entry_write(dev_priv, PLANE_BUF_CFG(pipe, plane),
- &ddb->plane[pipe][plane]);
- skl_ddb_entry_write(dev_priv, PLANE_NV12_BUF_CFG(pipe, plane),
- &ddb->y_plane[pipe][plane]);
+ skl_ddb_entry_write(dev_priv, PLANE_BUF_CFG(pipe, plane_id),
+ &ddb->plane[pipe][plane_id]);
+ skl_ddb_entry_write(dev_priv, PLANE_NV12_BUF_CFG(pipe, plane_id),
+ &ddb->y_plane[pipe][plane_id]);
}

void skl_write_cursor_wm(struct intel_crtc *intel_crtc,
@@ -3977,17 +3952,16 @@ skl_ddb_add_affected_planes(struct intel_crtc_state *cstate)
struct drm_plane_state *plane_state;
struct drm_plane *plane;
enum pipe pipe = intel_crtc->pipe;
- int id;

WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc));

drm_for_each_plane_mask(plane, dev, cstate->base.plane_mask) {
- id = skl_wm_plane_id(to_intel_plane(plane));
+ enum plane_id plane_id = to_intel_plane(plane)->id;

- if (skl_ddb_entry_equal(&cur_ddb->plane[pipe][id],
- &new_ddb->plane[pipe][id]) &&
- skl_ddb_entry_equal(&cur_ddb->y_plane[pipe][id],
- &new_ddb->y_plane[pipe][id]))
+ if (skl_ddb_entry_equal(&cur_ddb->plane[pipe][plane_id],
+ &new_ddb->plane[pipe][plane_id]) &&
+ skl_ddb_entry_equal(&cur_ddb->y_plane[pipe][plane_id],
+ &new_ddb->y_plane[pipe][plane_id]))
continue;

plane_state = drm_atomic_get_plane_state(state, plane);
@@ -4099,7 +4073,6 @@ skl_print_wm_changes(const struct drm_atomic_state *state)
const struct intel_plane *intel_plane;
const struct skl_ddb_allocation *old_ddb = &dev_priv->wm.skl_hw.ddb;
const struct skl_ddb_allocation *new_ddb = &intel_state->wm_results.ddb;
- int id;
int i;

for_each_crtc_in_state(state, crtc, cstate, i) {
@@ -4107,11 +4080,11 @@ skl_print_wm_changes(const struct drm_atomic_state *state)
enum pipe pipe = intel_crtc->pipe;

for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
+ enum plane_id plane_id = intel_plane->id;
const struct skl_ddb_entry *old, *new;

- id = skl_wm_plane_id(intel_plane);
- old = &old_ddb->plane[pipe][id];
- new = &new_ddb->plane[pipe][id];
+ old = &old_ddb->plane[pipe][plane_id];
+ new = &new_ddb->plane[pipe][plane_id];

if (skl_ddb_entry_equal(old, new))
continue;
@@ -4201,17 +4174,21 @@ static void skl_atomic_update_crtc_wm(struct intel_atomic_state *state,
struct skl_pipe_wm *pipe_wm = &cstate->wm.skl.optimal;
const struct skl_ddb_allocation *ddb = &state->wm_results.ddb;
enum pipe pipe = crtc->pipe;
- int plane;
+ enum plane_id plane_id;

if (!(state->wm_results.dirty_pipes & drm_crtc_mask(&crtc->base)))
return;

I915_WRITE(PIPE_WM_LINETIME(pipe), pipe_wm->linetime);

- for_each_universal_plane(dev_priv, pipe, plane)
- skl_write_plane_wm(crtc, &pipe_wm->planes[plane], ddb, plane);
-
- skl_write_cursor_wm(crtc, &pipe_wm->planes[PLANE_CURSOR], ddb);
+ for_each_plane_id_on_crtc(crtc, plane_id) {
+ if (plane_id != PLANE_CURSOR)
+ skl_write_plane_wm(crtc, &pipe_wm->planes[plane_id],
+ ddb, plane_id);
+ else
+ skl_write_cursor_wm(crtc, &pipe_wm->planes[plane_id],
+ ddb);
+ }
}

static void skl_initial_wm(struct intel_atomic_state *state,
@@ -4326,32 +4303,29 @@ static inline void skl_wm_level_from_reg_val(uint32_t val,
void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc,
struct skl_pipe_wm *out)
{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
+ struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_plane *intel_plane;
- struct skl_plane_wm *wm;
enum pipe pipe = intel_crtc->pipe;
- int level, id, max_level;
+ int level, max_level;
+ enum plane_id plane_id;
uint32_t val;

max_level = ilk_wm_max_level(dev_priv);

- for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
- id = skl_wm_plane_id(intel_plane);
- wm = &out->planes[id];
+ for_each_plane_id_on_crtc(intel_crtc, plane_id) {
+ struct skl_plane_wm *wm = &out->planes[plane_id];

for (level = 0; level <= max_level; level++) {
- if (id != PLANE_CURSOR)
- val = I915_READ(PLANE_WM(pipe, id, level));
+ if (plane_id != PLANE_CURSOR)
+ val = I915_READ(PLANE_WM(pipe, plane_id, level));
else
val = I915_READ(CUR_WM(pipe, level));

skl_wm_level_from_reg_val(val, &wm->wm[level]);
}

- if (id != PLANE_CURSOR)
- val = I915_READ(PLANE_WM_TRANS(pipe, id));
+ if (plane_id != PLANE_CURSOR)
+ val = I915_READ(PLANE_WM_TRANS(pipe, plane_id));
else
val = I915_READ(CUR_WM_TRANS(pipe));

--
2.7.4