/*
* Copyright (C) 2015 Etnaviv Project
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ETNAVIV_DRM_H__
#define __ETNAVIV_DRM_H__
#include "drm.h"
#if defined(__cplusplus)
extern "C" {
#endif
/* Please note that modifications to all structs defined here are
* subject to backwards-compatibility constraints:
* 1) Do not use pointers, use __u64 instead for 32 bit / 64 bit
* user/kernel compatibility
* 2) Keep fields aligned to their size
* 3) Because of how drm_ioctl() works, we can add new fields at
* the end of an ioctl if some care is taken: drm_ioctl() will
* zero out the new fields at the tail of the ioctl, so a zero
* value should have a backwards compatible meaning. And for
* output params, userspace won't see the newly added output
* fields.. so that has to be somehow ok.
*/
/* timeouts are specified in clock-monotonic absolute times (to simplify
* restarting interrupted ioctls). The following struct is logically the
* same as 'struct timespec' but 32/64b ABI safe.
*/
struct drm_etnaviv_timespec {
__s64 tv_sec; /* seconds */
__s64 tv_nsec; /* nanoseconds */
};
#define ETNAVIV_PARAM_GPU_MODEL 0x01
#define ETNAVIV_PARAM_GPU_REVISION 0x02
#define ETNAVIV_PARAM_GPU_FEATURES_0 0x03
#define ETNAVIV_PARAM_GPU_FEATURES_1 0x04
#define ETNAVIV_PARAM_GPU_FEATURES_2 0x05
#define ETNAVIV_PARAM_GPU_FEATURES_3 0x06
#define ETNAVIV_PARAM_GPU_FEATURES_4 0x07
#define ETNAVIV_PARAM_GPU_FEATURES_5 0x08
#define ETNAVIV_PARAM_GPU_FEATURES_6 0x09
#define ETNAVIV_PARAM_GPU_STREAM_COUNT 0x10
#define ETNAVIV_PARAM_GPU_REGISTER_MAX 0x11
#define ETNAVIV_PARAM_GPU_THREAD_COUNT 0x12
#define ETNAVIV_PARAM_GPU_VERTEX_CACHE_SIZE 0x13
#define ETNAVIV_PARAM_GPU_SHADER_CORE_COUNT 0x14
#define ETNAVIV_PARAM_GPU_PIXEL_PIPES 0x15
#define ETNAVIV_PARAM_GPU_VERTEX_OUTPUT_BUFFER_SIZE 0x16
#define ETNAVIV_PARAM_GPU_BUFFER_SIZE 0x17
#define ETNAVIV_PARAM_GPU_INSTRUCTION_COUNT 0x18
#define ETNAVIV_PARAM_GPU_NUM_CONSTANTS 0x19
#define ETNAVIV_PARAM_GPU_NUM_VARYINGS 0x1a
#define ETNA_MAX_PIPES 4
struct drm_etnaviv_param {
__u32 pipe; /* in */
__u32 param; /* in, ETNAVIV_PARAM_x */
__u64 value; /* out (get_param) or in (set_param) */
};
/*
* GEM buffers:
*/
#define ETNA_BO_CACHE_MASK 0x000f0000
/* cache modes */
#define ETNA_BO_CACHED 0x00010000
#define ETNA_BO_WC 0x00020000
#define ETNA_BO_UNCACHED 0x00040000
/* map flags */
#define ETNA_BO_FORCE_MMU 0x00100000
struct drm_etnaviv_gem_new {
__u64 size; /* in */
__u32 flags; /* in, mask of ETNA_BO_x */
__u32 handle; /* out */
};
struct drm_etnaviv_gem_info {
__u32 handle; /* in */
__u32 pad;
__u64 offset; /* out, offset to pass to mmap() */
};
#define ETNA_PREP_READ 0x01
#define ETNA_PREP_WRITE 0x02
#define ETNA_PREP_NOSYNC 0x04
struct drm_etnaviv_gem_cpu_prep {
__u32 handle; /* in */
__u32 op; /* in, mask of ETNA_PREP_x */
struct drm_etnaviv_timespec timeout; /* in */
};
struct drm_etnaviv_gem_cpu_fini {
__u32 handle; /* in */
__u32 flags; /* in, placeholder for now, no defined values */
};
/*
* Cmdstream Submission:
*/
/* The value written into the cmdstream is logically:
* relocbuf->gpuaddr + reloc_offset
*
* NOTE that reloc's must be sorted by order of increasing submit_offset,
* otherwise EINVAL.
*/
struct drm_etnaviv_gem_submit_reloc {
__u32 submit_offset; /* in, offset from submit_bo */
__u32 reloc_idx; /* in, index of reloc_bo buffer */
__u64 reloc_offset; /* in, offset from start of reloc_bo */
__u32 flags; /* in, placeholder for now, no defined values */
};
/* Each buffer referenced elsewhere in the cmdstream submit (ie. the
* cmdstream buffer(s) themselves or reloc entries) has one (and only
* one) entry in the submit->bos[] table.
*
* As a optimization, the current buffer (gpu virtual address) can be
* passed back through the 'presumed' field. If on a subsequent reloc,
* userspace passes back a 'presumed' address that is still valid,
* then patching the cmdstream for this entry is skipped. This can
* avoid kernel needing to map/access the cmdstream bo in the common
* case.
*/
#define ETNA_SUBMIT_BO_READ 0x0001
#define ETNA_SUBMIT_BO_WRITE 0x0002
struct drm_etnaviv_gem_submit_bo {
__u32 flags; /* in, mask of ETNA_SUBMIT_BO_x */
__u32 handle; /* in, GEM handle */
__u64 presumed; /* in/out, presumed buffer address */
};
/* Each cmdstream submit consists of a table of buffers involved, and
* one or more cmdstream buffers. This allows for conditional execution
* (context-restore), and IB buffers needed for per tile/bin draw cmds.
*/
#define ETNA_PIPE_3D 0x00
#define ETNA_PIPE_2D 0x01
#define ETNA_PIPE_VG 0x02
struct drm_etnaviv_gem_submit {
__u32 fence; /* out */
__u32 pipe; /* in */
__u32 exec_state; /* in, initial execution state (ETNA_PIPE_x) */
__u32 nr_bos; /* in, number of submit_bo's */
__u32 nr_relocs; /* in, number of submit_reloc's */
__u32 stream_size; /* in, cmdstream size */
__u64 bos; /* in, ptr to array of submit_bo's */
__u64 relocs; /* in, ptr to array of submit_reloc's */
__u64 stream; /* in, ptr to cmdstream */
};
/* The normal way to synchronize with the GPU is just to CPU_PREP on
* a buffer if you need to access it from the CPU (other cmdstream
* submission from same or other contexts, PAGE_FLIP ioctl, etc, all
* handle the required synchronization under the hood). This ioctl
* mainly just exists as a way to implement the gallium pipe_fence
* APIs without requiring a dummy bo to synchronize on.
*/
#define ETNA_WAIT_NONBLOCK 0x01
struct drm_etnaviv_wait_fence {
__u32 pipe; /* in */
__u32 fence; /* in */
__u32 flags; /* in, mask of ETNA_WAIT_x */
__u32 pad;
struct drm_etnaviv_timespec timeout; /* in */
};
#define ETNA_USERPTR_READ 0x01
#define ETNA_USERPTR_WRITE 0x02
struct drm_etnaviv_gem_userptr {
__u64 user_ptr; /* in, page aligned user pointer */
__u64 user_size; /* in, page aligned user size */
__u32 flags; /* in, flags */
__u32 handle; /* out, non-zero handle */
};
struct drm_etnaviv_gem_wait {
__u32 pipe; /* in */
__u32 handle; /* in, bo to be waited for */
__u32 flags; /* in, mask of ETNA_WAIT_x */
__u32 pad;
struct drm_etnaviv_timespec timeout; /* in */
};
#define DRM_ETNAVIV_GET_PARAM 0x00
/* placeholder:
#define DRM_ETNAVIV_SET_PARAM 0x01
*/
#define DRM_ETNAVIV_GEM_NEW 0x02
#define DRM_ETNAVIV_GEM_INFO 0x03
#define DRM_ETNAVIV_GEM_CPU_PREP 0x04
#define DRM_ETNAVIV_GEM_CPU_FINI 0x05
#define DRM_ETNAVIV_GEM_SUBMIT 0x06
#define DRM_ETNAVIV_WAIT_FENCE 0x07
#define DRM_ETNAVIV_GEM_USERPTR 0x08
#define DRM_ETNAVIV_GEM_WAIT 0x09
#define DRM_ETNAVIV_NUM_IOCTLS 0x0a
#define DRM_IOCTL_ETNAVIV_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GET_PARAM, struct drm_etnaviv_param)
#define DRM_IOCTL_ETNAVIV_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_NEW, struct drm_etnaviv_gem_new)
#define DRM_IOCTL_ETNAVIV_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_INFO, struct drm_etnaviv_gem_info)
#define DRM_IOCTL_ETNAVIV_GEM_CPU_PREP DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_CPU_PREP, struct drm_etnaviv_gem_cpu_prep)
#define DRM_IOCTL_ETNAVIV_GEM_CPU_FINI DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_CPU_FINI, struct drm_etnaviv_gem_cpu_fini)
#define DRM_IOCTL_ETNAVIV_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_SUBMIT, struct drm_etnaviv_gem_submit)
#define DRM_IOCTL_ETNAVIV_WAIT_FENCE DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_WAIT_FENCE, struct drm_etnaviv_wait_fence)
#define DRM_IOCTL_ETNAVIV_GEM_USERPTR DRM_IOWR(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_USERPTR, struct drm_etnaviv_gem_userptr)
#define DRM_IOCTL_ETNAVIV_GEM_WAIT DRM_IOW(DRM_COMMAND_BASE + DRM_ETNAVIV_GEM_WAIT, struct drm_etnaviv_gem_wait)
#if defined(__cplusplus)
}
#endif
#endif /* __ETNAVIV_DRM_H__ */