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msm_drm.h
/* * Copyright (C) 2013 Red Hat * Author: Rob Clark <robdclark@gmail.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef __MSM_DRM_H__ #define __MSM_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. */ #define MSM_PIPE_NONE 0x00 #define MSM_PIPE_2D0 0x01 #define MSM_PIPE_2D1 0x02 #define MSM_PIPE_3D0 0x10 /* The pipe-id just uses the lower bits, so can be OR'd with flags in * the upper 16 bits (which could be extended further, if needed, maybe * we extend/overload the pipe-id some day to deal with multiple rings, * but even then I don't think we need the full lower 16 bits). */ #define MSM_PIPE_ID_MASK 0xffff #define MSM_PIPE_ID(x) ((x) & MSM_PIPE_ID_MASK) #define MSM_PIPE_FLAGS(x) ((x) & ~MSM_PIPE_ID_MASK) /* 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 { __s64 tv_sec; /* seconds */ __s64 tv_nsec; /* nanoseconds */ }; /* Below "RO" indicates a read-only param, "WO" indicates write-only, and * "RW" indicates a param that can be both read (GET_PARAM) and written * (SET_PARAM) */ #define MSM_PARAM_GPU_ID 0x01 /* RO */ #define MSM_PARAM_GMEM_SIZE 0x02 /* RO */ #define MSM_PARAM_CHIP_ID 0x03 /* RO */ #define MSM_PARAM_MAX_FREQ 0x04 /* RO */ #define MSM_PARAM_TIMESTAMP 0x05 /* RO */ #define MSM_PARAM_GMEM_BASE 0x06 /* RO */ #define MSM_PARAM_PRIORITIES 0x07 /* RO: The # of priority levels */ #define MSM_PARAM_PP_PGTABLE 0x08 /* RO: Deprecated, always returns zero */ #define MSM_PARAM_FAULTS 0x09 /* RO */ #define MSM_PARAM_SUSPENDS 0x0a /* RO */ #define MSM_PARAM_SYSPROF 0x0b /* WO: 1 preserves perfcntrs, 2 also disables suspend */ #define MSM_PARAM_COMM 0x0c /* WO: override for task->comm */ #define MSM_PARAM_CMDLINE 0x0d /* WO: override for task cmdline */ #define MSM_PARAM_VA_START 0x0e /* RO: start of valid GPU iova range */ #define MSM_PARAM_VA_SIZE 0x0f /* RO: size of valid GPU iova range (bytes) */ /* For backwards compat. The original support for preemption was based on * a single ring per priority level so # of priority levels equals the # * of rings. With drm/scheduler providing additional levels of priority, * the number of priorities is greater than the # of rings. The param is * renamed to better reflect this. */ #define MSM_PARAM_NR_RINGS MSM_PARAM_PRIORITIES struct drm_msm_param { __u32 pipe; /* in, MSM_PIPE_x */ __u32 param; /* in, MSM_PARAM_x */ __u64 value; /* out (get_param) or in (set_param) */ __u32 len; /* zero for non-pointer params */ __u32 pad; /* must be zero */ }; /* * 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 /* deprecated, use MSM_BO_WC */ #define MSM_BO_CACHED_COHERENT 0x080000 #define MSM_BO_FLAGS (MSM_BO_SCANOUT | \ MSM_BO_GPU_READONLY | \ MSM_BO_CACHE_MASK) struct drm_msm_gem_new { __u64 size; /* in */ __u32 flags; /* in, mask of MSM_BO_x */ __u32 handle; /* out */ }; /* Get or set GEM buffer info. The requested value can be passed * directly in 'value', or for data larger than 64b 'value' is a * pointer to userspace buffer, with 'len' specifying the number of * bytes copied into that buffer. For info returned by pointer, * calling the GEM_INFO ioctl with null 'value' will return the * required buffer size in 'len' */ #define MSM_INFO_GET_OFFSET 0x00 /* get mmap() offset, returned by value */ #define MSM_INFO_GET_IOVA 0x01 /* get iova, returned by value */ #define MSM_INFO_SET_NAME 0x02 /* set the debug name (by pointer) */ #define MSM_INFO_GET_NAME 0x03 /* get debug name, returned by pointer */ #define MSM_INFO_SET_IOVA 0x04 /* set the iova, passed by value */ #define MSM_INFO_GET_FLAGS 0x05 /* get the MSM_BO_x flags */ struct drm_msm_gem_info { __u32 handle; /* in */ __u32 info; /* in - one of MSM_INFO_* */ __u64 value; /* in or out */ __u32 len; /* in or out */ __u32 pad; }; #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 { __u32 handle; /* in */ __u32 op; /* in, mask of MSM_PREP_x */ struct drm_msm_timespec timeout; /* in */ }; struct drm_msm_gem_cpu_fini { __u32 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 { __u32 submit_offset; /* in, offset from submit_bo */ __u32 or; /* in, value OR'd with result */ __s32 shift; /* in, amount of left shift (can be negative) */ __u32 reloc_idx; /* in, index of reloc_bo buffer */ __u64 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 { __u32 type; /* in, one of MSM_SUBMIT_CMD_x */ __u32 submit_idx; /* in, index of submit_bo cmdstream buffer */ __u32 submit_offset; /* in, offset into submit_bo */ __u32 size; /* in, cmdstream size */ __u32 pad; __u32 nr_relocs; /* in, number of submit_reloc's */ __u64 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_DUMP 0x0004 #define MSM_SUBMIT_BO_NO_IMPLICIT 0x0008 #define MSM_SUBMIT_BO_FLAGS (MSM_SUBMIT_BO_READ | \ MSM_SUBMIT_BO_WRITE | \ MSM_SUBMIT_BO_DUMP | \ MSM_SUBMIT_BO_NO_IMPLICIT) struct drm_msm_gem_submit_bo { __u32 flags; /* in, mask of MSM_SUBMIT_BO_x */ __u32 handle; /* in, GEM handle */ __u64 presumed; /* in/out, presumed buffer address */ }; /* Valid submit ioctl flags: */ #define MSM_SUBMIT_NO_IMPLICIT 0x80000000 /* disable implicit sync */ #define MSM_SUBMIT_FENCE_FD_IN 0x40000000 /* enable input fence_fd */ #define MSM_SUBMIT_FENCE_FD_OUT 0x20000000 /* enable output fence_fd */ #define MSM_SUBMIT_SUDO 0x10000000 /* run submitted cmds from RB */ #define MSM_SUBMIT_SYNCOBJ_IN 0x08000000 /* enable input syncobj */ #define MSM_SUBMIT_SYNCOBJ_OUT 0x04000000 /* enable output syncobj */ #define MSM_SUBMIT_FENCE_SN_IN 0x02000000 /* userspace passes in seqno fence */ #define MSM_SUBMIT_FLAGS ( \ MSM_SUBMIT_NO_IMPLICIT | \ MSM_SUBMIT_FENCE_FD_IN | \ MSM_SUBMIT_FENCE_FD_OUT | \ MSM_SUBMIT_SUDO | \ MSM_SUBMIT_SYNCOBJ_IN | \ MSM_SUBMIT_SYNCOBJ_OUT | \ MSM_SUBMIT_FENCE_SN_IN | \ 0) #define MSM_SUBMIT_SYNCOBJ_RESET 0x00000001 /* Reset syncobj after wait. */ #define MSM_SUBMIT_SYNCOBJ_FLAGS ( \ MSM_SUBMIT_SYNCOBJ_RESET | \ 0) struct drm_msm_gem_submit_syncobj { __u32 handle; /* in, syncobj handle. */ __u32 flags; /* in, from MSM_SUBMIT_SYNCOBJ_FLAGS */ __u64 point; /* in, timepoint for timeline syncobjs. */ }; /* 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 { __u32 flags; /* MSM_PIPE_x | MSM_SUBMIT_x */ __u32 fence; /* out (or in with MSM_SUBMIT_FENCE_SN_IN flag) */ __u32 nr_bos; /* in, number of submit_bo's */ __u32 nr_cmds; /* in, number of submit_cmd's */ __u64 bos; /* in, ptr to array of submit_bo's */ __u64 cmds; /* in, ptr to array of submit_cmd's */ __s32 fence_fd; /* in/out fence fd (see MSM_SUBMIT_FENCE_FD_IN/OUT) */ __u32 queueid; /* in, submitqueue id */ __u64 in_syncobjs; /* in, ptr to array of drm_msm_gem_submit_syncobj */ __u64 out_syncobjs; /* in, ptr to array of drm_msm_gem_submit_syncobj */ __u32 nr_in_syncobjs; /* in, number of entries in in_syncobj */ __u32 nr_out_syncobjs; /* in, number of entries in out_syncobj. */ __u32 syncobj_stride; /* in, stride of syncobj arrays. */ __u32 pad; /*in, reserved for future use, always 0. */ }; /* 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 { __u32 fence; /* in */ __u32 pad; struct drm_msm_timespec timeout; /* in */ __u32 queueid; /* in, submitqueue id */ }; /* madvise provides a way to tell the kernel in case a buffers contents * can be discarded under memory pressure, which is useful for userspace * bo cache where we want to optimistically hold on to buffer allocate * and potential mmap, but allow the pages to be discarded under memory * pressure. * * Typical usage would involve madvise(DONTNEED) when buffer enters BO * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache. * In the WILLNEED case, 'retained' indicates to userspace whether the * backing pages still exist. */ #define MSM_MADV_WILLNEED 0 /* backing pages are needed, status returned in 'retained' */ #define MSM_MADV_DONTNEED 1 /* backing pages not needed */ #define __MSM_MADV_PURGED 2 /* internal state */ struct drm_msm_gem_madvise { __u32 handle; /* in, GEM handle */ __u32 madv; /* in, MSM_MADV_x */ __u32 retained; /* out, whether backing store still exists */ }; /* * Draw queues allow the user to set specific submission parameter. Command * submissions specify a specific submitqueue to use. ID 0 is reserved for * backwards compatibility as a "default" submitqueue */ #define MSM_SUBMITQUEUE_FLAGS (0) /* * The submitqueue priority should be between 0 and MSM_PARAM_PRIORITIES-1, * a lower numeric value is higher priority. */ struct drm_msm_submitqueue { __u32 flags; /* in, MSM_SUBMITQUEUE_x */ __u32 prio; /* in, Priority level */ __u32 id; /* out, identifier */ }; #define MSM_SUBMITQUEUE_PARAM_FAULTS 0 struct drm_msm_submitqueue_query { __u64 data; __u32 id; __u32 param; __u32 len; __u32 pad; }; #define DRM_MSM_GET_PARAM 0x00 #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_GEM_MADVISE 0x08 /* placeholder: #define DRM_MSM_GEM_SVM_NEW 0x09 */ #define DRM_MSM_SUBMITQUEUE_NEW 0x0A #define DRM_MSM_SUBMITQUEUE_CLOSE 0x0B #define DRM_MSM_SUBMITQUEUE_QUERY 0x0C #define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param) #define DRM_IOCTL_MSM_SET_PARAM DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SET_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) #define DRM_IOCTL_MSM_GEM_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_MADVISE, struct drm_msm_gem_madvise) #define DRM_IOCTL_MSM_SUBMITQUEUE_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_NEW, struct drm_msm_submitqueue) #define DRM_IOCTL_MSM_SUBMITQUEUE_CLOSE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_CLOSE, __u32) #define DRM_IOCTL_MSM_SUBMITQUEUE_QUERY DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_QUERY, struct drm_msm_submitqueue_query) #if defined(__cplusplus) } #endif #endif /* __MSM_DRM_H__ */
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