/* * Copyright (C) 2013 Red Hat * Author: Rob Clark * * 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 . */ #ifndef __MSM_DRM_H__ #define __MSM_DRM_H__ #include #include /* 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__ */