From f77c9aff85caa9e9b0c2b6fc5be1fc2c76fe02b2 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Mon, 9 Mar 2020 14:52:06 -0400 Subject: drm/amdgpu: Fix per-IB secure flag GFX hang Since commit "Move to a per-IB secure flag (TMZ)", we've been seeing hangs in GFX. We need to send FRAME CONTROL stop/start back-to-back, every time we flip the TMZ flag. That is, when we transition from TMZ to non-TMZ we have to send a stop with TMZ followed by a start with non-TMZ, and similarly for transitioning from non-TMZ into TMZ. This patch implements this, thus fixing the GFX hang. v1 -> v2: As suggested by Luben, and accept part of implemetation from this patch: - Put "secure" closed to the loop and use optimization - Change "secure" to bool again, and move "secure == -1" out of loop. v3: Small fixes/optimizations. Reported-and-Tested-by: Pierre-Eric Pelloux-Prayer Signed-off-by: Huang Rui Reviewed-by: Alex Deucher Signed-off-by: Luben Tuikov Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 28 ++++++++++++++-------------- drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 5 +++-- drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 15 ++++++++------- drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 13 +++++++------ 4 files changed, 32 insertions(+), 29 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c index cba22039df6c..24ae9f6c4255 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c @@ -218,7 +218,14 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs, amdgpu_ring_emit_cntxcntl(ring, status); } + /* Setup initial TMZiness and send it off. + */ secure = false; + if (job && ring->funcs->emit_frame_cntl) { + secure = ib->flags & AMDGPU_IB_FLAGS_SECURE; + amdgpu_ring_emit_frame_cntl(ring, true, secure); + } + for (i = 0; i < num_ibs; ++i) { ib = &ibs[i]; @@ -230,27 +237,20 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs, !amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */ continue; - /* If this IB is TMZ, add frame TMZ start packet, - * else, turn off TMZ. - */ - if (ib->flags & AMDGPU_IB_FLAGS_SECURE && ring->funcs->emit_tmz) { - if (!secure) { - secure = true; - amdgpu_ring_emit_tmz(ring, true); + if (job && ring->funcs->emit_frame_cntl) { + if (secure != !!(ib->flags & AMDGPU_IB_FLAGS_SECURE)) { + amdgpu_ring_emit_frame_cntl(ring, false, secure); + secure = !secure; + amdgpu_ring_emit_frame_cntl(ring, true, secure); } - } else if (secure) { - secure = false; - amdgpu_ring_emit_tmz(ring, false); } amdgpu_ring_emit_ib(ring, job, ib, status); status &= ~AMDGPU_HAVE_CTX_SWITCH; } - if (secure) { - secure = false; - amdgpu_ring_emit_tmz(ring, false); - } + if (job && ring->funcs->emit_frame_cntl) + amdgpu_ring_emit_frame_cntl(ring, false, secure); #ifdef CONFIG_X86_64 if (!(adev->flags & AMD_IS_APU)) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h index 7d39064f9361..7390261095b7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -177,7 +177,8 @@ struct amdgpu_ring_funcs { void (*emit_reg_write_reg_wait)(struct amdgpu_ring *ring, uint32_t reg0, uint32_t reg1, uint32_t ref, uint32_t mask); - void (*emit_tmz)(struct amdgpu_ring *ring, bool start); + void (*emit_frame_cntl)(struct amdgpu_ring *ring, bool start, + bool secure); /* Try to soft recover the ring to make the fence signal */ void (*soft_recovery)(struct amdgpu_ring *ring, unsigned vmid); int (*preempt_ib)(struct amdgpu_ring *ring); @@ -256,7 +257,7 @@ struct amdgpu_ring { #define amdgpu_ring_emit_wreg(r, d, v) (r)->funcs->emit_wreg((r), (d), (v)) #define amdgpu_ring_emit_reg_wait(r, d, v, m) (r)->funcs->emit_reg_wait((r), (d), (v), (m)) #define amdgpu_ring_emit_reg_write_reg_wait(r, d0, d1, v, m) (r)->funcs->emit_reg_write_reg_wait((r), (d0), (d1), (v), (m)) -#define amdgpu_ring_emit_tmz(r, b) (r)->funcs->emit_tmz((r), (b)) +#define amdgpu_ring_emit_frame_cntl(r, b, s) (r)->funcs->emit_frame_cntl((r), (b), (s)) #define amdgpu_ring_pad_ib(r, ib) ((r)->funcs->pad_ib((r), (ib))) #define amdgpu_ring_init_cond_exec(r) (r)->funcs->init_cond_exec((r)) #define amdgpu_ring_patch_cond_exec(r,o) (r)->funcs->patch_cond_exec((r),(o)) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index 404c6d470515..9fe20b782e88 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -3037,7 +3037,7 @@ static int gfx_v10_0_rlc_backdoor_autoload_enable(struct amdgpu_device *adev); static int gfx_v10_0_wait_for_rlc_autoload_complete(struct amdgpu_device *adev); static void gfx_v10_0_ring_emit_ce_meta(struct amdgpu_ring *ring, bool resume); static void gfx_v10_0_ring_emit_de_meta(struct amdgpu_ring *ring, bool resume); -static void gfx_v10_0_ring_emit_tmz(struct amdgpu_ring *ring, bool start); +static void gfx_v10_0_ring_emit_frame_cntl(struct amdgpu_ring *ring, bool start, bool secure); static void gfx10_kiq_set_resources(struct amdgpu_ring *kiq_ring, uint64_t queue_mask) { @@ -7599,12 +7599,13 @@ static void gfx_v10_0_ring_emit_de_meta(struct amdgpu_ring *ring, bool resume) sizeof(de_payload) >> 2); } -static void gfx_v10_0_ring_emit_tmz(struct amdgpu_ring *ring, bool start) +static void gfx_v10_0_ring_emit_frame_cntl(struct amdgpu_ring *ring, bool start, + bool secure) { - if (amdgpu_is_tmz(ring->adev)) { - amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0)); - amdgpu_ring_write(ring, FRAME_TMZ | FRAME_CMD(start ? 0 : 1)); - } + uint32_t v = secure ? FRAME_TMZ : 0; + + amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0)); + amdgpu_ring_write(ring, v | FRAME_CMD(start ? 0 : 1)); } static void gfx_v10_0_ring_emit_rreg(struct amdgpu_ring *ring, uint32_t reg, @@ -8058,7 +8059,7 @@ static const struct amdgpu_ring_funcs gfx_v10_0_ring_funcs_gfx = { .init_cond_exec = gfx_v10_0_ring_emit_init_cond_exec, .patch_cond_exec = gfx_v10_0_ring_emit_patch_cond_exec, .preempt_ib = gfx_v10_0_ring_preempt_ib, - .emit_tmz = gfx_v10_0_ring_emit_tmz, + .emit_frame_cntl = gfx_v10_0_ring_emit_frame_cntl, .emit_wreg = gfx_v10_0_ring_emit_wreg, .emit_reg_wait = gfx_v10_0_ring_emit_reg_wait, .emit_reg_write_reg_wait = gfx_v10_0_ring_emit_reg_write_reg_wait, diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 4e042e974983..eedb92218ba5 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -5442,12 +5442,13 @@ static void gfx_v9_0_ring_emit_de_meta(struct amdgpu_ring *ring) amdgpu_ring_write_multiple(ring, (void *)&de_payload, sizeof(de_payload) >> 2); } -static void gfx_v9_0_ring_emit_tmz(struct amdgpu_ring *ring, bool start) +static void gfx_v9_0_ring_emit_frame_cntl(struct amdgpu_ring *ring, bool start, + bool secure) { - if (amdgpu_is_tmz(ring->adev)) { - amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0)); - amdgpu_ring_write(ring, FRAME_TMZ | FRAME_CMD(start ? 0 : 1)); - } + uint32_t v = secure ? FRAME_TMZ : 0; + + amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0)); + amdgpu_ring_write(ring, v | FRAME_CMD(start ? 0 : 1)); } static void gfx_v9_ring_emit_cntxcntl(struct amdgpu_ring *ring, uint32_t flags) @@ -6699,7 +6700,7 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_gfx = { .emit_cntxcntl = gfx_v9_ring_emit_cntxcntl, .init_cond_exec = gfx_v9_0_ring_emit_init_cond_exec, .patch_cond_exec = gfx_v9_0_ring_emit_patch_cond_exec, - .emit_tmz = gfx_v9_0_ring_emit_tmz, + .emit_frame_cntl = gfx_v9_0_ring_emit_frame_cntl, .emit_wreg = gfx_v9_0_ring_emit_wreg, .emit_reg_wait = gfx_v9_0_ring_emit_reg_wait, .emit_reg_write_reg_wait = gfx_v9_0_ring_emit_reg_write_reg_wait, -- cgit v1.2.3