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accel/ivpu: Introduce a new DRM driver for Intel VPU

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VPU stands for Versatile Processing Unit and it's a CPU-integrated
inference accelerator for Computer Vision and Deep Learning
applications.

The VPU device consist of following components:
  - Buttress - provides CPU to VPU integration, interrupt, frequency and
    power management.
  - Memory Management Unit (based on ARM MMU-600) - translates VPU to
    host DMA addresses, isolates user workloads.
  - RISC based microcontroller - executes firmware that provides job
    execution API for the kernel-mode driver
  - Neural Compute Subsystem (NCS) - does the actual work, provides
    Compute and Copy engines.
  - Network on Chip (NoC) - network fabric connecting all the components

This driver supports VPU IP v2.7 integrated into Intel Meteor Lake
client CPUs (14th generation).

Module sources are at drivers/accel/ivpu and module name is
"intel_vpu.ko".

This patch includes only very besic functionality:
  - module, PCI device and IRQ initialization
  - register definitions and low level register manipulation functions
  - SET/GET_PARAM ioctls
  - power up without firmware

Co-developed-by: Krystian Pradzynski <krystian.pradzynski@linux.intel.com>
Signed-off-by: Krystian Pradzynski <krystian.pradzynski@linux.intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20230117092723.60441-2-jacek.lawrynowicz@linux.intel.com
This commit is contained in:
Jacek Lawrynowicz
2023-01-17 10:27:17 +01:00
committed by Daniel Vetter
parent 6f84981772
commit 35b137630f
14 changed files with 2272 additions and 0 deletions
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95
include/uapi/drm/ivpu_accel.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
/*
* Copyright (C) 2020-2023 Intel Corporation
*/
#ifndef __UAPI_IVPU_DRM_H__
#define __UAPI_IVPU_DRM_H__
#include "drm.h"
#if defined(__cplusplus)
extern "C" {
#endif
#define DRM_IVPU_DRIVER_MAJOR 1
#define DRM_IVPU_DRIVER_MINOR 0
#define DRM_IVPU_GET_PARAM 0x00
#define DRM_IVPU_SET_PARAM 0x01
#define DRM_IOCTL_IVPU_GET_PARAM \
DRM_IOWR(DRM_COMMAND_BASE + DRM_IVPU_GET_PARAM, struct drm_ivpu_param)
#define DRM_IOCTL_IVPU_SET_PARAM \
DRM_IOW(DRM_COMMAND_BASE + DRM_IVPU_SET_PARAM, struct drm_ivpu_param)
/**
* DOC: contexts
*
* VPU contexts have private virtual address space, job queues and priority.
* Each context is identified by an unique ID. Context is created on open().
*/
#define DRM_IVPU_PARAM_DEVICE_ID 0
#define DRM_IVPU_PARAM_DEVICE_REVISION 1
#define DRM_IVPU_PARAM_PLATFORM_TYPE 2
#define DRM_IVPU_PARAM_CORE_CLOCK_RATE 3
#define DRM_IVPU_PARAM_NUM_CONTEXTS 4
#define DRM_IVPU_PARAM_CONTEXT_BASE_ADDRESS 5
#define DRM_IVPU_PARAM_CONTEXT_PRIORITY 6
#define DRM_IVPU_PLATFORM_TYPE_SILICON 0
#define DRM_IVPU_CONTEXT_PRIORITY_IDLE 0
#define DRM_IVPU_CONTEXT_PRIORITY_NORMAL 1
#define DRM_IVPU_CONTEXT_PRIORITY_FOCUS 2
#define DRM_IVPU_CONTEXT_PRIORITY_REALTIME 3
/**
* struct drm_ivpu_param - Get/Set VPU parameters
*/
struct drm_ivpu_param {
/**
* @param:
*
* Supported params:
*
* %DRM_IVPU_PARAM_DEVICE_ID:
* PCI Device ID of the VPU device (read-only)
*
* %DRM_IVPU_PARAM_DEVICE_REVISION:
* VPU device revision (read-only)
*
* %DRM_IVPU_PARAM_PLATFORM_TYPE:
* Returns %DRM_IVPU_PLATFORM_TYPE_SILICON on real hardware or device specific
* platform type when executing on a simulator or emulator (read-only)
*
* %DRM_IVPU_PARAM_CORE_CLOCK_RATE:
* Current PLL frequency (read-only)
*
* %DRM_IVPU_PARAM_NUM_CONTEXTS:
* Maximum number of simultaneously existing contexts (read-only)
*
* %DRM_IVPU_PARAM_CONTEXT_BASE_ADDRESS:
* Lowest VPU virtual address available in the current context (read-only)
*
* %DRM_IVPU_PARAM_CONTEXT_PRIORITY:
* Value of current context scheduling priority (read-write).
* See DRM_IVPU_CONTEXT_PRIORITY_* for possible values.
*
*/
__u32 param;
/** @index: Index for params that have multiple instances */
__u32 index;
/** @value: Param value */
__u64 value;
};
#if defined(__cplusplus)
}
#endif
#endif /* __UAPI_IVPU_DRM_H__ */