From 04bcdf75dee8cb539e8cb7d63901c6e4b2072a7a Mon Sep 17 00:00:00 2001 From: jsg Date: Thu, 21 Dec 2023 03:43:28 +0000 Subject: [PATCH] drm/amdgpu/sdma5.2: add begin/end_use ring callbacks From Alex Deucher 78b2ba39beef21c8baebb1868569c2026ad76de0 in linux-6.1.y/6.1.69 ab4750332dbe535243def5dcebc24ca00c1f98ac in mainline linux --- sys/dev/pci/drm/amd/amdgpu/sdma_v5_2.c | 28 ++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/sys/dev/pci/drm/amd/amdgpu/sdma_v5_2.c b/sys/dev/pci/drm/amd/amdgpu/sdma_v5_2.c index 93bdd2ce8ac..5dfd1e1a378 100644 --- a/sys/dev/pci/drm/amd/amdgpu/sdma_v5_2.c +++ b/sys/dev/pci/drm/amd/amdgpu/sdma_v5_2.c @@ -1690,6 +1690,32 @@ static void sdma_v5_2_get_clockgating_state(void *handle, u64 *flags) *flags |= AMD_CG_SUPPORT_SDMA_LS; } +static void sdma_v5_2_ring_begin_use(struct amdgpu_ring *ring) +{ + struct amdgpu_device *adev = ring->adev; + + /* SDMA 5.2.3 (RMB) FW doesn't seem to properly + * disallow GFXOFF in some cases leading to + * hangs in SDMA. Disallow GFXOFF while SDMA is active. + * We can probably just limit this to 5.2.3, + * but it shouldn't hurt for other parts since + * this GFXOFF will be disallowed anyway when SDMA is + * active, this just makes it explicit. + */ + amdgpu_gfx_off_ctrl(adev, false); +} + +static void sdma_v5_2_ring_end_use(struct amdgpu_ring *ring) +{ + struct amdgpu_device *adev = ring->adev; + + /* SDMA 5.2.3 (RMB) FW doesn't seem to properly + * disallow GFXOFF in some cases leading to + * hangs in SDMA. Allow GFXOFF when SDMA is complete. + */ + amdgpu_gfx_off_ctrl(adev, true); +} + const struct amd_ip_funcs sdma_v5_2_ip_funcs = { .name = "sdma_v5_2", .early_init = sdma_v5_2_early_init, @@ -1738,6 +1764,8 @@ static const struct amdgpu_ring_funcs sdma_v5_2_ring_funcs = { .test_ib = sdma_v5_2_ring_test_ib, .insert_nop = sdma_v5_2_ring_insert_nop, .pad_ib = sdma_v5_2_ring_pad_ib, + .begin_use = sdma_v5_2_ring_begin_use, + .end_use = sdma_v5_2_ring_end_use, .emit_wreg = sdma_v5_2_ring_emit_wreg, .emit_reg_wait = sdma_v5_2_ring_emit_reg_wait, .emit_reg_write_reg_wait = sdma_v5_2_ring_emit_reg_write_reg_wait, -- 2.20.1