#include <linux/module.h>
/**
+ * DOC: RC6
+ *
* RC6 is a special power stage which allows the GPU to enter an very
* low-voltage mode when idle, using down to 0V while at this stage. This
* stage is entered automatically when the GPU is idle when RC6 support is
if (pipe_h < pfit_h)
pipe_h = pfit_h;
+ if (WARN_ON(!pfit_w || !pfit_h))
+ return pixel_rate;
+
pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h,
pfit_w * pfit_h);
}
if (WARN(latency == 0, "Latency value missing\n"))
return UINT_MAX;
+ if (WARN_ON(!pipe_htotal))
+ return UINT_MAX;
ret = (latency * pixel_rate) / (pipe_htotal * 10000);
ret = (ret + 1) * horiz_pixels * bytes_per_pixel;
static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels,
uint8_t bytes_per_pixel)
{
+ /*
+ * Neither of these should be possible since this function shouldn't be
+ * called if the CRTC is off or the plane is invisible. But let's be
+ * extra paranoid to avoid a potential divide-by-zero if we screw up
+ * elsewhere in the driver.
+ */
+ if (WARN_ON(!bytes_per_pixel))
+ return 0;
+ if (WARN_ON(!horiz_pixels))
+ return 0;
+
return DIV_ROUND_UP(pri_val * 64, horiz_pixels * bytes_per_pixel) + 2;
}
}
static uint32_t
-hsw_compute_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc)
+hsw_compute_linetime_wm(struct drm_device *dev,
+ struct intel_crtc_state *cstate)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
+ const struct drm_display_mode *adjusted_mode =
+ &cstate->base.adjusted_mode;
u32 linetime, ips_linetime;
- if (!intel_crtc->active)
+ if (!cstate->base.active)
+ return 0;
+ if (WARN_ON(adjusted_mode->crtc_clock == 0))
+ return 0;
+ if (WARN_ON(dev_priv->cdclk_freq == 0))
return 0;
/* The WM are computed with base on how long it takes to fill a single
return PTR_ERR(cstate);
pipe_wm = &cstate->wm.optimal.ilk;
+ memset(pipe_wm, 0, sizeof(*pipe_wm));
for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
ps = drm_atomic_get_plane_state(state,
pristate, sprstate, curstate, &pipe_wm->wm[0]);
if (IS_HASWELL(dev) || IS_BROADWELL(dev))
- pipe_wm->linetime = hsw_compute_linetime_wm(dev,
- &intel_crtc->base);
+ pipe_wm->linetime = hsw_compute_linetime_wm(dev, cstate);
/* LP0 watermarks always use 1/2 DDB partitioning */
ilk_compute_wm_maximums(dev, 0, &config, INTEL_DDB_PART_1_2, &max);
dev_priv->wm.skl_hw = *results;
}
-static void ilk_program_watermarks(struct drm_i915_private *dev_priv)
+static void ilk_compute_wm_config(struct drm_device *dev,
+ struct intel_wm_config *config)
{
- struct drm_device *dev = dev_priv->dev;
+ struct intel_crtc *crtc;
+
+ /* Compute the currently _active_ config */
+ for_each_intel_crtc(dev, crtc) {
+ const struct intel_pipe_wm *wm = &crtc->wm.active.ilk;
+
+ if (!wm->pipe_enabled)
+ continue;
+
+ config->sprites_enabled |= wm->sprites_enabled;
+ config->sprites_scaled |= wm->sprites_scaled;
+ config->num_pipes_active++;
+ }
+}
+
+static void ilk_program_watermarks(struct intel_crtc_state *cstate)
+{
+ struct drm_crtc *crtc = cstate->base.crtc;
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm;
struct ilk_wm_maximums max;
- struct intel_wm_config *config = &dev_priv->wm.config;
+ struct intel_wm_config config = {};
struct ilk_wm_values results = {};
enum intel_ddb_partitioning partitioning;
- ilk_compute_wm_maximums(dev, 1, config, INTEL_DDB_PART_1_2, &max);
- ilk_wm_merge(dev, config, &max, &lp_wm_1_2);
+ ilk_compute_wm_config(dev, &config);
+
+ ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_1_2, &max);
+ ilk_wm_merge(dev, &config, &max, &lp_wm_1_2);
/* 5/6 split only in single pipe config on IVB+ */
if (INTEL_INFO(dev)->gen >= 7 &&
- config->num_pipes_active == 1 && config->sprites_enabled) {
- ilk_compute_wm_maximums(dev, 1, config, INTEL_DDB_PART_5_6, &max);
- ilk_wm_merge(dev, config, &max, &lp_wm_5_6);
+ config.num_pipes_active == 1 && config.sprites_enabled) {
+ ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_5_6, &max);
+ ilk_wm_merge(dev, &config, &max, &lp_wm_5_6);
best_lp_wm = ilk_find_best_result(dev, &lp_wm_1_2, &lp_wm_5_6);
} else {
static void ilk_update_wm(struct drm_crtc *crtc)
{
- struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state);
intel_crtc->wm.active.ilk = cstate->wm.optimal.ilk;
- ilk_program_watermarks(dev_priv);
+ ilk_program_watermarks(cstate);
}
static void skl_pipe_wm_active_state(uint32_t val,
dev_priv->display.update_wm(crtc);
}
-/**
+/*
* Lock protecting IPS related data structures
*/
DEFINE_SPINLOCK(mchdev_lock);
}
if (HAS_RC6p(dev))
DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s RC6p %s RC6pp %s\n",
- (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off",
- (mode & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off",
- (mode & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off");
+ onoff(mode & GEN6_RC_CTL_RC6_ENABLE),
+ onoff(mode & GEN6_RC_CTL_RC6p_ENABLE),
+ onoff(mode & GEN6_RC_CTL_RC6pp_ENABLE));
else
DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s\n",
- (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off");
+ onoff(mode & GEN6_RC_CTL_RC6_ENABLE));
}
static int sanitize_rc6_option(const struct drm_device *dev, int enable_rc6)
/* 3a: Enable RC6 */
if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE)
rc6_mask = GEN6_RC_CTL_RC6_ENABLE;
- DRM_INFO("RC6 %s\n", (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
- "on" : "off");
+ DRM_INFO("RC6 %s\n", onoff(rc6_mask & GEN6_RC_CTL_RC6_ENABLE));
/* WaRsUseTimeoutMode */
if (IS_SKL_REVID(dev, 0, SKL_REVID_D0) ||
IS_BXT_REVID(dev, 0, BXT_REVID_A1)) {
* 3b: Enable Coarse Power Gating only when RC6 is enabled.
* WaRsDisableCoarsePowerGating:skl,bxt - Render/Media PG need to be disabled with RC6.
*/
- if ((IS_BROXTON(dev) && (INTEL_REVID(dev) < BXT_REVID_B0)) ||
- ((IS_SKL_GT3(dev) || IS_SKL_GT4(dev)) && (INTEL_REVID(dev) <= SKL_REVID_F0)))
+ if (NEEDS_WaRsDisableCoarsePowerGating(dev))
I915_WRITE(GEN9_PG_ENABLE, 0);
else
I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
dev_priv->wm.spr_latency[0] && dev_priv->wm.cur_latency[0])) {
dev_priv->display.update_wm = ilk_update_wm;
dev_priv->display.compute_pipe_wm = ilk_compute_pipe_wm;
+ dev_priv->display.program_watermarks = ilk_program_watermarks;
} else {
DRM_DEBUG_KMS("Failed to read display plane latency. "
"Disable CxSR\n");
projects / karo-tx-linux.git / blobdiff