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Mon, 2 Jun 2025 12:47:47 +0000 Message-ID: Date: Mon, 2 Jun 2025 14:47:42 +0200 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 02/28] drm/amdgpu/gfx7: drop reset_kgq To: Alex Deucher , amd-gfx@lists.freedesktop.org References: <20250529200758.6326-1-alexander.deucher@amd.com> <20250529200758.6326-3-alexander.deucher@amd.com> Content-Language: en-US From: =?UTF-8?Q?Christian_K=C3=B6nig?= In-Reply-To: <20250529200758.6326-3-alexander.deucher@amd.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MN2PR17CA0012.namprd17.prod.outlook.com (2603:10b6:208:15e::25) To PH7PR12MB5685.namprd12.prod.outlook.com (2603:10b6:510:13c::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH7PR12MB5685:EE_|CY5PR12MB6598:EE_ X-MS-Office365-Filtering-Correlation-Id: 11ae00fe-35fb-48ed-4cec-08dda1d3acf9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024; 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And from my testing on gfx9 it seems to work rather reliable. Are you sure we should just drop that? Regards, Christian. > --- > drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 71 --------------------------- > 1 file changed, 71 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c > index da0534ff1271a..2aa323dab34e3 100644 > --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c > +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c > @@ -4884,76 +4884,6 @@ static void gfx_v7_0_emit_mem_sync_compute(struct amdgpu_ring *ring) > amdgpu_ring_write(ring, 0x0000000A); /* poll interval */ > } > > -static void gfx_v7_0_wait_reg_mem(struct amdgpu_ring *ring, int eng_sel, > - int mem_space, int opt, uint32_t addr0, > - uint32_t addr1, uint32_t ref, uint32_t mask, > - uint32_t inv) > -{ > - amdgpu_ring_write(ring, PACKET3(PACKET3_WAIT_REG_MEM, 5)); > - amdgpu_ring_write(ring, > - /* memory (1) or register (0) */ > - (WAIT_REG_MEM_MEM_SPACE(mem_space) | > - WAIT_REG_MEM_OPERATION(opt) | /* wait */ > - WAIT_REG_MEM_FUNCTION(3) | /* equal */ > - WAIT_REG_MEM_ENGINE(eng_sel))); > - > - if (mem_space) > - BUG_ON(addr0 & 0x3); /* Dword align */ > - amdgpu_ring_write(ring, addr0); > - amdgpu_ring_write(ring, addr1); > - amdgpu_ring_write(ring, ref); > - amdgpu_ring_write(ring, mask); > - amdgpu_ring_write(ring, inv); /* poll interval */ > -} > - > -static void gfx_v7_0_ring_emit_reg_wait(struct amdgpu_ring *ring, uint32_t reg, > - uint32_t val, uint32_t mask) > -{ > - gfx_v7_0_wait_reg_mem(ring, 0, 0, 0, reg, 0, val, mask, 0x20); > -} > - > -static int gfx_v7_0_reset_kgq(struct amdgpu_ring *ring, unsigned int vmid) > -{ > - struct amdgpu_device *adev = ring->adev; > - struct amdgpu_kiq *kiq = &adev->gfx.kiq[0]; > - struct amdgpu_ring *kiq_ring = &kiq->ring; > - unsigned long flags; > - u32 tmp; > - int r; > - > - if (amdgpu_sriov_vf(adev)) > - return -EINVAL; > - > - if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues) > - return -EINVAL; > - > - spin_lock_irqsave(&kiq->ring_lock, flags); > - > - if (amdgpu_ring_alloc(kiq_ring, 5)) { > - spin_unlock_irqrestore(&kiq->ring_lock, flags); > - return -ENOMEM; > - } > - > - tmp = REG_SET_FIELD(0, CP_VMID_RESET, RESET_REQUEST, 1 << vmid); > - gfx_v7_0_ring_emit_wreg(kiq_ring, mmCP_VMID_RESET, tmp); > - amdgpu_ring_commit(kiq_ring); > - > - spin_unlock_irqrestore(&kiq->ring_lock, flags); > - > - r = amdgpu_ring_test_ring(kiq_ring); > - if (r) > - return r; > - > - if (amdgpu_ring_alloc(ring, 7 + 12 + 5)) > - return -ENOMEM; > - gfx_v7_0_ring_emit_fence_gfx(ring, ring->fence_drv.gpu_addr, > - ring->fence_drv.sync_seq, AMDGPU_FENCE_FLAG_EXEC); > - gfx_v7_0_ring_emit_reg_wait(ring, mmCP_VMID_RESET, 0, 0xffff); > - gfx_v7_0_ring_emit_wreg(ring, mmCP_VMID_RESET, 0); > - > - return amdgpu_ring_test_ring(ring); > -} > - > static const struct amd_ip_funcs gfx_v7_0_ip_funcs = { > .name = "gfx_v7_0", > .early_init = gfx_v7_0_early_init, > @@ -5003,7 +4933,6 @@ static const struct amdgpu_ring_funcs gfx_v7_0_ring_funcs_gfx = { > .emit_wreg = gfx_v7_0_ring_emit_wreg, > .soft_recovery = gfx_v7_0_ring_soft_recovery, > .emit_mem_sync = gfx_v7_0_emit_mem_sync, > - .reset = gfx_v7_0_reset_kgq, > }; > > static const struct amdgpu_ring_funcs gfx_v7_0_ring_funcs_compute = {