diff options
Diffstat (limited to 'kernel/include/uapi/drm/msm_drm.h')
| -rw-r--r-- | kernel/include/uapi/drm/msm_drm.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/kernel/include/uapi/drm/msm_drm.h b/kernel/include/uapi/drm/msm_drm.h new file mode 100644 index 000000000..0664c31f0 --- /dev/null +++ b/kernel/include/uapi/drm/msm_drm.h @@ -0,0 +1,219 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * 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 __MSM_DRM_H__ +#define __MSM_DRM_H__ + +#include <stddef.h> +#include <drm/drm.h> + +/* Please note that modifications to all structs defined here are + * subject to backwards-compatibility constraints: + * 1) Do not use pointers, use uint64_t 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. + */ + +#define MSM_PIPE_NONE 0x00 +#define MSM_PIPE_2D0 0x01 +#define MSM_PIPE_2D1 0x02 +#define MSM_PIPE_3D0 0x10 + +/* 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_msm_timespec { + int64_t tv_sec; /* seconds */ + int64_t tv_nsec; /* nanoseconds */ +}; + +#define MSM_PARAM_GPU_ID 0x01 +#define MSM_PARAM_GMEM_SIZE 0x02 +#define MSM_PARAM_CHIP_ID 0x03 + +struct drm_msm_param { + uint32_t pipe; /* in, MSM_PIPE_x */ + uint32_t param; /* in, MSM_PARAM_x */ + uint64_t value; /* out (get_param) or in (set_param) */ +}; + +/* + * GEM buffers: + */ + +#define MSM_BO_SCANOUT 0x00000001 /* scanout capable */ +#define MSM_BO_GPU_READONLY 0x00000002 +#define MSM_BO_CACHE_MASK 0x000f0000 +/* cache modes */ +#define MSM_BO_CACHED 0x00010000 +#define MSM_BO_WC 0x00020000 +#define MSM_BO_UNCACHED 0x00040000 + +#define MSM_BO_FLAGS (MSM_BO_SCANOUT | \ + MSM_BO_GPU_READONLY | \ + MSM_BO_CACHED | \ + MSM_BO_WC | \ + MSM_BO_UNCACHED) + +struct drm_msm_gem_new { + uint64_t size; /* in */ + uint32_t flags; /* in, mask of MSM_BO_x */ + uint32_t handle; /* out */ +}; + +struct drm_msm_gem_info { + uint32_t handle; /* in */ + uint32_t pad; + uint64_t offset; /* out, offset to pass to mmap() */ +}; + +#define MSM_PREP_READ 0x01 +#define MSM_PREP_WRITE 0x02 +#define MSM_PREP_NOSYNC 0x04 + +#define MSM_PREP_FLAGS (MSM_PREP_READ | MSM_PREP_WRITE | MSM_PREP_NOSYNC) + +struct drm_msm_gem_cpu_prep { + uint32_t handle; /* in */ + uint32_t op; /* in, mask of MSM_PREP_x */ + struct drm_msm_timespec timeout; /* in */ +}; + +struct drm_msm_gem_cpu_fini { + uint32_t handle; /* in */ +}; + +/* + * Cmdstream Submission: + */ + +/* The value written into the cmdstream is logically: + * + * ((relocbuf->gpuaddr + reloc_offset) << shift) | or + * + * When we have GPU's w/ >32bit ptrs, it should be possible to deal + * with this by emit'ing two reloc entries with appropriate shift + * values. Or a new MSM_SUBMIT_CMD_x type would also be an option. + * + * NOTE that reloc's must be sorted by order of increasing submit_offset, + * otherwise EINVAL. + */ +struct drm_msm_gem_submit_reloc { + uint32_t submit_offset; /* in, offset from submit_bo */ + uint32_t or; /* in, value OR'd with result */ + int32_t shift; /* in, amount of left shift (can be negative) */ + uint32_t reloc_idx; /* in, index of reloc_bo buffer */ + uint64_t reloc_offset; /* in, offset from start of reloc_bo */ +}; + +/* submit-types: + * BUF - this cmd buffer is executed normally. + * IB_TARGET_BUF - this cmd buffer is an IB target. Reloc's are + * processed normally, but the kernel does not setup an IB to + * this buffer in the first-level ringbuffer + * CTX_RESTORE_BUF - only executed if there has been a GPU context + * switch since the last SUBMIT ioctl + */ +#define MSM_SUBMIT_CMD_BUF 0x0001 +#define MSM_SUBMIT_CMD_IB_TARGET_BUF 0x0002 +#define MSM_SUBMIT_CMD_CTX_RESTORE_BUF 0x0003 +struct drm_msm_gem_submit_cmd { + uint32_t type; /* in, one of MSM_SUBMIT_CMD_x */ + uint32_t submit_idx; /* in, index of submit_bo cmdstream buffer */ + uint32_t submit_offset; /* in, offset into submit_bo */ + uint32_t size; /* in, cmdstream size */ + uint32_t pad; + uint32_t nr_relocs; /* in, number of submit_reloc's */ + uint64_t __user relocs; /* in, ptr to array of submit_reloc's */ +}; + +/* 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 MSM_SUBMIT_BO_READ 0x0001 +#define MSM_SUBMIT_BO_WRITE 0x0002 + +#define MSM_SUBMIT_BO_FLAGS (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE) + +struct drm_msm_gem_submit_bo { + uint32_t flags; /* in, mask of MSM_SUBMIT_BO_x */ + uint32_t handle; /* in, GEM handle */ + uint64_t 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. + */ +struct drm_msm_gem_submit { + uint32_t pipe; /* in, MSM_PIPE_x */ + uint32_t fence; /* out */ + uint32_t nr_bos; /* in, number of submit_bo's */ + uint32_t nr_cmds; /* in, number of submit_cmd's */ + uint64_t __user bos; /* in, ptr to array of submit_bo's */ + uint64_t __user cmds; /* in, ptr to array of submit_cmd's */ +}; + +/* 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. + */ +struct drm_msm_wait_fence { + uint32_t fence; /* in */ + uint32_t pad; + struct drm_msm_timespec timeout; /* in */ +}; + +#define DRM_MSM_GET_PARAM 0x00 +/* placeholder: +#define DRM_MSM_SET_PARAM 0x01 + */ +#define DRM_MSM_GEM_NEW 0x02 +#define DRM_MSM_GEM_INFO 0x03 +#define DRM_MSM_GEM_CPU_PREP 0x04 +#define DRM_MSM_GEM_CPU_FINI 0x05 +#define DRM_MSM_GEM_SUBMIT 0x06 +#define DRM_MSM_WAIT_FENCE 0x07 +#define DRM_MSM_NUM_IOCTLS 0x08 + +#define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param) +#define DRM_IOCTL_MSM_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new) +#define DRM_IOCTL_MSM_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_INFO, struct drm_msm_gem_info) +#define DRM_IOCTL_MSM_GEM_CPU_PREP DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_PREP, struct drm_msm_gem_cpu_prep) +#define DRM_IOCTL_MSM_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_FINI, struct drm_msm_gem_cpu_fini) +#define DRM_IOCTL_MSM_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_SUBMIT, struct drm_msm_gem_submit) +#define DRM_IOCTL_MSM_WAIT_FENCE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_WAIT_FENCE, struct drm_msm_wait_fence) + +#endif /* __MSM_DRM_H__ */ |