drm-uapi: add lima_drm.h

Acked-by: Eric Anholt <eric@anholt.net>
Signed-of-by: Qiang Yu <yuq825@gmail.com>

diff --git a/include/drm-uapi/lima_drm.h b/include/drm-uapi/lima_drm.h
new file mode 100644 (file)
index 0000000..95a00fb
--- /dev/null
+++ b/include/drm-uapi/lima_drm.h
@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
+/* Copyright 2017-2018 Qiang Yu <yuq825@gmail.com> */
+
+#ifndef __LIMA_DRM_H__
+#define __LIMA_DRM_H__
+
+#include "drm.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+enum drm_lima_param_gpu_id {
+       DRM_LIMA_PARAM_GPU_ID_UNKNOWN,
+       DRM_LIMA_PARAM_GPU_ID_MALI400,
+       DRM_LIMA_PARAM_GPU_ID_MALI450,
+};
+
+enum drm_lima_param {
+       DRM_LIMA_PARAM_GPU_ID,
+       DRM_LIMA_PARAM_NUM_PP,
+       DRM_LIMA_PARAM_GP_VERSION,
+       DRM_LIMA_PARAM_PP_VERSION,
+};
+
+/**
+ * get various information of the GPU
+ */
+struct drm_lima_get_param {
+       __u32 param; /* in, value in enum drm_lima_param */
+       __u32 pad;   /* pad, must be zero */
+       __u64 value; /* out, parameter value */
+};
+
+/**
+ * create a buffer for used by GPU
+ */
+struct drm_lima_gem_create {
+       __u32 size;    /* in, buffer size */
+       __u32 flags;   /* in, currently no flags, must be zero */
+       __u32 handle;  /* out, GEM buffer handle */
+       __u32 pad;     /* pad, must be zero */
+};
+
+/**
+ * get information of a buffer
+ */
+struct drm_lima_gem_info {
+       __u32 handle;  /* in, GEM buffer handle */
+       __u32 va;      /* out, virtual address mapped into GPU MMU */
+       __u64 offset;  /* out, used to mmap this buffer to CPU */
+};
+
+#define LIMA_SUBMIT_BO_READ   0x01
+#define LIMA_SUBMIT_BO_WRITE  0x02
+
+/* buffer information used by one task */
+struct drm_lima_gem_submit_bo {
+       __u32 handle;  /* in, GEM buffer handle */
+       __u32 flags;   /* in, buffer read/write by GPU */
+};
+
+#define LIMA_GP_FRAME_REG_NUM 6
+
+/* frame used to setup GP for each task */
+struct drm_lima_gp_frame {
+       __u32 frame[LIMA_GP_FRAME_REG_NUM];
+};
+
+#define LIMA_PP_FRAME_REG_NUM 23
+#define LIMA_PP_WB_REG_NUM 12
+
+/* frame used to setup mali400 GPU PP for each task */
+struct drm_lima_m400_pp_frame {
+       __u32 frame[LIMA_PP_FRAME_REG_NUM];
+       __u32 num_pp;
+       __u32 wb[3 * LIMA_PP_WB_REG_NUM];
+       __u32 plbu_array_address[4];
+       __u32 fragment_stack_address[4];
+};
+
+/* frame used to setup mali450 GPU PP for each task */
+struct drm_lima_m450_pp_frame {
+       __u32 frame[LIMA_PP_FRAME_REG_NUM];
+       __u32 num_pp;
+       __u32 wb[3 * LIMA_PP_WB_REG_NUM];
+       __u32 use_dlbu;
+       __u32 _pad;
+       union {
+               __u32 plbu_array_address[8];
+               __u32 dlbu_regs[4];
+       };
+       __u32 fragment_stack_address[8];
+};
+
+#define LIMA_PIPE_GP  0x00
+#define LIMA_PIPE_PP  0x01
+
+#define LIMA_SUBMIT_FLAG_EXPLICIT_FENCE (1 << 0)
+
+/**
+ * submit a task to GPU
+ *
+ * User can always merge multi sync_file and drm_syncobj
+ * into one drm_syncobj as in_sync[0], but we reserve
+ * in_sync[1] for another task's out_sync to avoid the
+ * export/import/merge pass when explicit sync.
+ */
+struct drm_lima_gem_submit {
+       __u32 ctx;         /* in, context handle task is submitted to */
+       __u32 pipe;        /* in, which pipe to use, GP/PP */
+       __u32 nr_bos;      /* in, array length of bos field */
+       __u32 frame_size;  /* in, size of frame field */
+       __u64 bos;         /* in, array of drm_lima_gem_submit_bo */
+       __u64 frame;       /* in, GP/PP frame */
+       __u32 flags;       /* in, submit flags */
+       __u32 out_sync;    /* in, drm_syncobj handle used to wait task finish after submission */
+       __u32 in_sync[2];  /* in, drm_syncobj handle used to wait before start this task */
+};
+
+#define LIMA_GEM_WAIT_READ   0x01
+#define LIMA_GEM_WAIT_WRITE  0x02
+
+/**
+ * wait pending GPU task finish of a buffer
+ */
+struct drm_lima_gem_wait {
+       __u32 handle;      /* in, GEM buffer handle */
+       __u32 op;          /* in, CPU want to read/write this buffer */
+       __s64 timeout_ns;  /* in, wait timeout in absulute time */
+};
+
+/**
+ * create a context
+ */
+struct drm_lima_ctx_create {
+       __u32 id;          /* out, context handle */
+       __u32 _pad;        /* pad, must be zero */
+};
+
+/**
+ * free a context
+ */
+struct drm_lima_ctx_free {
+       __u32 id;          /* in, context handle */
+       __u32 _pad;        /* pad, must be zero */
+};
+
+#define DRM_LIMA_GET_PARAM   0x00
+#define DRM_LIMA_GEM_CREATE  0x01
+#define DRM_LIMA_GEM_INFO    0x02
+#define DRM_LIMA_GEM_SUBMIT  0x03
+#define DRM_LIMA_GEM_WAIT    0x04
+#define DRM_LIMA_CTX_CREATE  0x05
+#define DRM_LIMA_CTX_FREE    0x06
+
+#define DRM_IOCTL_LIMA_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_LIMA_GET_PARAM, struct drm_lima_get_param)
+#define DRM_IOCTL_LIMA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_LIMA_GEM_CREATE, struct drm_lima_gem_create)
+#define DRM_IOCTL_LIMA_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_LIMA_GEM_INFO, struct drm_lima_gem_info)
+#define DRM_IOCTL_LIMA_GEM_SUBMIT DRM_IOW(DRM_COMMAND_BASE + DRM_LIMA_GEM_SUBMIT, struct drm_lima_gem_submit)
+#define DRM_IOCTL_LIMA_GEM_WAIT DRM_IOW(DRM_COMMAND_BASE + DRM_LIMA_GEM_WAIT, struct drm_lima_gem_wait)
+#define DRM_IOCTL_LIMA_CTX_CREATE DRM_IOR(DRM_COMMAND_BASE + DRM_LIMA_CTX_CREATE, struct drm_lima_ctx_create)
+#define DRM_IOCTL_LIMA_CTX_FREE DRM_IOW(DRM_COMMAND_BASE + DRM_LIMA_CTX_FREE, struct drm_lima_ctx_free)
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __LIMA_DRM_H__ */