From 2566fffd6011df17dfba0b216fe9a154d3eb3f75 Mon Sep 17 00:00:00 2001 From: Radhakrishna Sripada Date: Tue, 14 Sep 2021 15:07:44 -0700 Subject: [PATCH 1/3] drm/i915: Update memory bandwidth parameters Earlier while calculating derated bw we would use 90% of the calculated bw. Starting ADL-P we use a non standard derating. Updating the formulae to reflect the same. Bspec: 64631 v2: Use the new derating value only for ADL-P(MattR) Fixes: 4d32fe2f14a7 ("drm/i915/adl_p: Update memory bandwidth parameters") Cc: Matt Roper Signed-off-by: Radhakrishna Sripada Reviewed-by: Matt Roper Signed-off-by: Matt Roper Link: https://patchwork.freedesktop.org/patch/msgid/20210914220744.16042-1-radhakrishna.sripada@intel.com (cherry picked from commit f6d66fc8cf5f673ea76407be84dc17dbb3eda108) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_bw.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index e91e0e0191fb..4b94256d7319 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -222,31 +222,42 @@ static int icl_sagv_max_dclk(const struct intel_qgv_info *qi) struct intel_sa_info { u16 displayrtids; - u8 deburst, deprogbwlimit; + u8 deburst, deprogbwlimit, derating; }; static const struct intel_sa_info icl_sa_info = { .deburst = 8, .deprogbwlimit = 25, /* GB/s */ .displayrtids = 128, + .derating = 10, }; static const struct intel_sa_info tgl_sa_info = { .deburst = 16, .deprogbwlimit = 34, /* GB/s */ .displayrtids = 256, + .derating = 10, }; static const struct intel_sa_info rkl_sa_info = { .deburst = 16, .deprogbwlimit = 20, /* GB/s */ .displayrtids = 128, + .derating = 10, }; static const struct intel_sa_info adls_sa_info = { .deburst = 16, .deprogbwlimit = 38, /* GB/s */ .displayrtids = 256, + .derating = 10, +}; + +static const struct intel_sa_info adlp_sa_info = { + .deburst = 16, + .deprogbwlimit = 38, /* GB/s */ + .displayrtids = 256, + .derating = 20, }; static int icl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel_sa_info *sa) @@ -302,7 +313,7 @@ static int icl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel bw = icl_calc_bw(sp->dclk, clpchgroup * 32 * num_channels, ct); bi->deratedbw[j] = min(maxdebw, - bw * 9 / 10); /* 90% */ + bw * (100 - sa->derating) / 100); drm_dbg_kms(&dev_priv->drm, "BW%d / QGV %d: num_planes=%d deratedbw=%u\n", @@ -400,7 +411,9 @@ void intel_bw_init_hw(struct drm_i915_private *dev_priv) if (IS_DG2(dev_priv)) dg2_get_bw_info(dev_priv); - else if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) + else if (IS_ALDERLAKE_P(dev_priv)) + icl_get_bw_info(dev_priv, &adlp_sa_info); + else if (IS_ALDERLAKE_S(dev_priv)) icl_get_bw_info(dev_priv, &adls_sa_info); else if (IS_ROCKETLAKE(dev_priv)) icl_get_bw_info(dev_priv, &rkl_sa_info); From f9b23c157a78c77545099312394d484ce4f35b8b Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Mon, 30 Aug 2021 14:09:48 +0200 Subject: [PATCH 2/3] drm/i915: Move __i915_gem_free_object to ttm_bo_destroy MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When we implement delayed destroy, we may have a second call to the delete_mem_notify() handler, while free_object() only should be called once. Move it to bo->destroy(), to ensure it's only called once. This fixes some weird memory corruption issues with delayed destroy when async eviction is used. Signed-off-by: Maarten Lankhorst Link: https://patchwork.freedesktop.org/patch/msgid/20210830121006.2978297-2-maarten.lankhorst@linux.intel.com Fixes: 213d50927763 ("drm/i915/ttm: Introduce a TTM i915 gem object backend") Cc: Thomas Hellström Reviewed-by: Thomas Hellström (cherry picked from commit 48b0961269546716c3232748bf37e64e49fb866c) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c index 35eedc14f522..6ea13159bffc 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -356,11 +356,8 @@ static void i915_ttm_delete_mem_notify(struct ttm_buffer_object *bo) { struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo); - if (likely(obj)) { - /* This releases all gem object bindings to the backend. */ + if (likely(obj)) i915_ttm_free_cached_io_st(obj); - __i915_gem_free_object(obj); - } } static struct intel_memory_region * @@ -875,8 +872,12 @@ void i915_ttm_bo_destroy(struct ttm_buffer_object *bo) { struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo); + /* This releases all gem object bindings to the backend. */ + __i915_gem_free_object(obj); + i915_gem_object_release_memory_region(obj); mutex_destroy(&obj->ttm.get_io_page.lock); + if (obj->ttm.created) call_rcu(&obj->rcu, __i915_gem_free_object_rcu); } From b875fb313a10bf816b5d49d8d7642d1cc9905f2f Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 9 Aug 2021 12:48:05 -0700 Subject: [PATCH 3/3] drm/i915: Free all DMC payloads MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Free all the DMC payloads, not just DMC_MAIN. unreferenced object 0xffff88ff32d4d800 (size 1024): comm "kworker/1:5", pid 701, jiffies 4294904239 (age 109.736s) hex dump (first 32 bytes): 40 40 00 0c 03 00 00 00 00 00 00 00 00 00 00 00 @@.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000ba9d0d95>] dmc_load_work_fn+0x34d/0x510 [i915] [<000000001049fcab>] process_one_work+0x261/0x550 [<00000000eeb995ac>] worker_thread+0x49/0x3c0 [<0000000021031dc3>] kthread+0x10b/0x140 [<000000004a0f69ee>] ret_from_fork+0x1f/0x30 unreferenced object 0xffff88ff0bde4000 (size 1024): comm "kworker/0:3", pid 708, jiffies 4294904469 (age 108.816s) hex dump (first 32 bytes): 40 40 00 0c 01 00 00 00 00 00 00 00 00 00 00 00 @@.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000ba9d0d95>] dmc_load_work_fn+0x34d/0x510 [i915] [<000000001049fcab>] process_one_work+0x261/0x550 [<00000000eeb995ac>] worker_thread+0x49/0x3c0 [<0000000021031dc3>] kthread+0x10b/0x140 [<000000004a0f69ee>] ret_from_fork+0x1f/0x30 Fixes: 3d5928a168a9 ("drm/i915/xelpd: Pipe A DMC plugging") Cc: Anusha Srivatsa Cc: José Roberto de Souza Signed-off-by: Chris Wilson Signed-off-by: Lucas De Marchi Reviewed-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20210809194805.3793060-1-lucas.demarchi@intel.com (cherry picked from commit 064b877dff4252ced91a1c8b1f129073f2991f6e) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_dmc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c index 3c3c6cb5c0df..b3c8e1c450ef 100644 --- a/drivers/gpu/drm/i915/display/intel_dmc.c +++ b/drivers/gpu/drm/i915/display/intel_dmc.c @@ -805,11 +805,14 @@ void intel_dmc_ucode_resume(struct drm_i915_private *dev_priv) */ void intel_dmc_ucode_fini(struct drm_i915_private *dev_priv) { + int id; + if (!HAS_DMC(dev_priv)) return; intel_dmc_ucode_suspend(dev_priv); drm_WARN_ON(&dev_priv->drm, dev_priv->dmc.wakeref); - kfree(dev_priv->dmc.dmc_info[DMC_FW_MAIN].payload); + for (id = 0; id < DMC_FW_MAX; id++) + kfree(dev_priv->dmc.dmc_info[id].payload); }