[PATCH v3 2/9] drm/amdgpu: add usermode queue base code
Alex Deucher
alexdeucher at gmail.com
Thu Mar 30 21:15:22 UTC 2023
On Wed, Mar 29, 2023 at 12:05 PM Shashank Sharma
<shashank.sharma at amd.com> wrote:
>
> From: Shashank Sharma <contactshashanksharma at gmail.com>
>
> This patch adds skeleton code for amdgpu usermode queue. It contains:
> - A new files with init functions of usermode queues.
> - A queue context manager in driver private data.
>
> V1: Worked on design review comments from RFC patch series:
> (https://patchwork.freedesktop.org/series/112214/)
> - Alex: Keep a list of queues, instead of single queue per process.
> - Christian: Use the queue manager instead of global ptrs,
> Don't keep the queue structure in amdgpu_ctx
>
> V2:
> - Reformatted code, split the big patch into two
>
> V3:
> - Integration with doorbell manager
>
> Cc: Alex Deucher <alexander.deucher at amd.com>
> Cc: Christian Koenig <christian.koenig at amd.com>
> Signed-off-by: Shashank Sharma <contactshashanksharma at gmail.com>
> ---
> drivers/gpu/drm/amd/amdgpu/Makefile | 2 +
> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 10 +++-
> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 6 +++
> drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c | 39 +++++++++++++++
> .../gpu/drm/amd/include/amdgpu_userqueue.h | 49 +++++++++++++++++++
> 6 files changed, 106 insertions(+), 1 deletion(-)
> create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
> create mode 100644 drivers/gpu/drm/amd/include/amdgpu_userqueue.h
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
> index 204665f20319..2d90ba618e5d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/Makefile
> +++ b/drivers/gpu/drm/amd/amdgpu/Makefile
> @@ -210,6 +210,8 @@ amdgpu-y += \
> # add amdkfd interfaces
> amdgpu-y += amdgpu_amdkfd.o
>
> +# add usermode queue
> +amdgpu-y += amdgpu_userqueue.o
>
> ifneq ($(CONFIG_HSA_AMD),)
> AMDKFD_PATH := ../amdkfd
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 6b74df446694..c5f9af0e74ee 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -438,6 +438,14 @@ struct amdgpu_sa_manager {
> uint32_t align;
> };
>
> +/* Gfx usermode queues */
> +struct amdgpu_userq_mgr {
> + struct idr userq_idr;
> + struct mutex userq_mutex;
> + struct amdgpu_device *adev;
> + const struct amdgpu_userq_funcs *userq_funcs[AMDGPU_HW_IP_NUM];
These function pointers can be per device rather than per userq_mgr.
Just hang them off of adev and then each IP can fill them in during
their init functions.
Alex
> +};
> +
> /* sub-allocation buffer */
> struct amdgpu_sa_bo {
> struct list_head olist;
> @@ -470,7 +478,6 @@ struct amdgpu_flip_work {
> bool async;
> };
>
> -
> /*
> * file private structure
> */
> @@ -482,6 +489,7 @@ struct amdgpu_fpriv {
> struct mutex bo_list_lock;
> struct idr bo_list_handles;
> struct amdgpu_ctx_mgr ctx_mgr;
> + struct amdgpu_userq_mgr userq_mgr;
> };
>
> int amdgpu_file_to_fpriv(struct file *filp, struct amdgpu_fpriv **fpriv);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index b4f2d61ea0d5..2d6bcfd727c8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -52,6 +52,7 @@
> #include "amdgpu_ras.h"
> #include "amdgpu_xgmi.h"
> #include "amdgpu_reset.h"
> +#include "amdgpu_userqueue.h"
>
> /*
> * KMS wrapper.
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index 7aa7e52ca784..b16b8155a157 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -43,6 +43,7 @@
> #include "amdgpu_gem.h"
> #include "amdgpu_display.h"
> #include "amdgpu_ras.h"
> +#include "amdgpu_userqueue.h"
>
> void amdgpu_unregister_gpu_instance(struct amdgpu_device *adev)
> {
> @@ -1187,6 +1188,10 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
>
> amdgpu_ctx_mgr_init(&fpriv->ctx_mgr, adev);
>
> + r = amdgpu_userq_mgr_init(&fpriv->userq_mgr, adev);
> + if (r)
> + DRM_WARN("Can't setup usermode queues, only legacy workload submission will work\n");
> +
> file_priv->driver_priv = fpriv;
> goto out_suspend;
>
> @@ -1254,6 +1259,7 @@ void amdgpu_driver_postclose_kms(struct drm_device *dev,
>
> amdgpu_ctx_mgr_fini(&fpriv->ctx_mgr);
> amdgpu_vm_fini(adev, &fpriv->vm);
> + amdgpu_userq_mgr_fini(&fpriv->userq_mgr);
>
> if (pasid)
> amdgpu_pasid_free_delayed(pd->tbo.base.resv, pasid);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
> new file mode 100644
> index 000000000000..13e1eebc1cb6
> --- /dev/null
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
> @@ -0,0 +1,39 @@
> +/*
> + * Copyright 2022 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + */
> +
> +#include "amdgpu.h"
> +
> +int amdgpu_userq_mgr_init(struct amdgpu_userq_mgr *userq_mgr, struct amdgpu_device *adev)
> +{
> + mutex_init(&userq_mgr->userq_mutex);
> + idr_init_base(&userq_mgr->userq_idr, 1);
> + userq_mgr->adev = adev;
> +
> + return 0;
> +}
> +
> +void amdgpu_userq_mgr_fini(struct amdgpu_userq_mgr *userq_mgr)
> +{
> + idr_destroy(&userq_mgr->userq_idr);
> + mutex_destroy(&userq_mgr->userq_mutex);
> +}
> diff --git a/drivers/gpu/drm/amd/include/amdgpu_userqueue.h b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> new file mode 100644
> index 000000000000..7eeb8c9e6575
> --- /dev/null
> +++ b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> @@ -0,0 +1,49 @@
> +/*
> + * Copyright 2022 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + */
> +
> +#ifndef AMDGPU_USERQUEUE_H_
> +#define AMDGPU_USERQUEUE_H_
> +
> +#include "amdgpu.h"
> +#define AMDGPU_MAX_USERQ 512
> +
> +struct amdgpu_usermode_queue {
> + int queue_id;
> + int queue_type;
> + uint64_t flags;
> + uint64_t doorbell_handle;
> + struct amdgpu_vm *vm;
> + struct amdgpu_userq_mgr *userq_mgr;
> + struct amdgpu_mqd_prop userq_prop;
> +};
> +
> +struct amdgpu_userq_funcs {
> + int (*mqd_create)(struct amdgpu_userq_mgr *, struct amdgpu_usermode_queue *);
> + void (*mqd_destroy)(struct amdgpu_userq_mgr *, struct amdgpu_usermode_queue *);
> +};
> +
> +int amdgpu_userq_mgr_init(struct amdgpu_userq_mgr *userq_mgr, struct amdgpu_device *adev);
> +
> +void amdgpu_userq_mgr_fini(struct amdgpu_userq_mgr *userq_mgr);
> +
> +#endif
> --
> 2.40.0
>
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