diff options
Diffstat (limited to 'libdrm')
| -rw-r--r-- | libdrm/Makefile.am | 8 | ||||
| -rw-r--r-- | libdrm/dri_bufmgr.c | 141 | ||||
| -rw-r--r-- | libdrm/dri_bufmgr.h | 174 | ||||
| -rw-r--r-- | libdrm/intel/Makefile.am | 38 | ||||
| -rw-r--r-- | libdrm/intel/intel_bufmgr.h | 95 | ||||
| -rw-r--r-- | libdrm/intel/intel_bufmgr_fake.c | 1218 | ||||
| -rw-r--r-- | libdrm/intel/intel_bufmgr_gem.c | 833 | ||||
| -rw-r--r-- | libdrm/intel/mm.c | 281 | ||||
| -rw-r--r-- | libdrm/intel/mm.h | 88 | ||||
| -rw-r--r-- | libdrm/xf86drm.c | 2 | ||||
| -rw-r--r-- | libdrm/xf86drm.h | 1 | ||||
| -rw-r--r-- | libdrm/xf86mm.h | 12 |
12 files changed, 2888 insertions, 3 deletions
diff --git a/libdrm/Makefile.am b/libdrm/Makefile.am index 24c32038..624f6ffb 100644 --- a/libdrm/Makefile.am +++ b/libdrm/Makefile.am @@ -18,14 +18,18 @@ # 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. +SUBDIRS = intel + libdrm_la_LTLIBRARIES = libdrm.la libdrm_ladir = $(libdir) libdrm_la_LDFLAGS = -version-number 2:3:0 -no-undefined AM_CFLAGS = -I$(top_srcdir)/shared-core -libdrm_la_SOURCES = xf86drm.c xf86drmHash.c xf86drmRandom.c xf86drmSL.c xf86drmMode.c +libdrm_la_SOURCES = xf86drm.c xf86drmHash.c xf86drmRandom.c xf86drmSL.c \ + xf86drmMode.c dri_bufmgr.c +libdrm_la_LIBADD = intel/libdrm_intel.la libdrmincludedir = ${includedir} -libdrminclude_HEADERS = xf86drm.h xf86mm.h xf86drmMode.h +libdrminclude_HEADERS = xf86drm.h xf86mm.h xf86drmMode.h dri_bufmgr.h EXTRA_DIST = ChangeLog TODO diff --git a/libdrm/dri_bufmgr.c b/libdrm/dri_bufmgr.c new file mode 100644 index 00000000..7657df61 --- /dev/null +++ b/libdrm/dri_bufmgr.c @@ -0,0 +1,141 @@ +/* + * Copyright © 2007 Intel Corporation + * + * 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. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +#include <string.h> +#include <stdlib.h> +#include <assert.h> +#include "dri_bufmgr.h" + +/** @file dri_bufmgr.c + * + * Convenience functions for buffer management methods. + */ + +dri_bo * +dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size, + unsigned int alignment) +{ + return bufmgr->bo_alloc(bufmgr, name, size, alignment); +} + +void +dri_bo_reference(dri_bo *bo) +{ + bo->bufmgr->bo_reference(bo); +} + +void +dri_bo_unreference(dri_bo *bo) +{ + if (bo == NULL) + return; + + bo->bufmgr->bo_unreference(bo); +} + +int +dri_bo_map(dri_bo *buf, int write_enable) +{ + return buf->bufmgr->bo_map(buf, write_enable); +} + +int +dri_bo_unmap(dri_bo *buf) +{ + return buf->bufmgr->bo_unmap(buf); +} + +int +dri_bo_subdata(dri_bo *bo, unsigned long offset, + unsigned long size, const void *data) +{ + int ret; + if (bo->bufmgr->bo_subdata) + return bo->bufmgr->bo_subdata(bo, offset, size, data); + if (size == 0 || data == NULL) + return 0; + + ret = dri_bo_map(bo, 1); + if (ret) + return ret; + memcpy((unsigned char *)bo->virtual + offset, data, size); + dri_bo_unmap(bo); + return 0; +} + +int +dri_bo_get_subdata(dri_bo *bo, unsigned long offset, + unsigned long size, void *data) +{ + int ret; + if (bo->bufmgr->bo_subdata) + return bo->bufmgr->bo_get_subdata(bo, offset, size, data); + + if (size == 0 || data == NULL) + return 0; + + ret = dri_bo_map(bo, 0); + if (ret) + return ret; + memcpy(data, (unsigned char *)bo->virtual + offset, size); + dri_bo_unmap(bo); + return 0; +} + +void +dri_bo_wait_rendering(dri_bo *bo) +{ + bo->bufmgr->bo_wait_rendering(bo); +} + +void +dri_bufmgr_destroy(dri_bufmgr *bufmgr) +{ + bufmgr->destroy(bufmgr); +} + +void *dri_process_relocs(dri_bo *batch_buf) +{ + return batch_buf->bufmgr->process_relocs(batch_buf); +} + +void dri_post_submit(dri_bo *batch_buf) +{ + batch_buf->bufmgr->post_submit(batch_buf); +} + +void +dri_bufmgr_set_debug(dri_bufmgr *bufmgr, int enable_debug) +{ + bufmgr->debug = enable_debug; +} + +int +dri_bufmgr_check_aperture_space(dri_bo *bo) +{ + return bo->bufmgr->check_aperture_space(bo); +} diff --git a/libdrm/dri_bufmgr.h b/libdrm/dri_bufmgr.h new file mode 100644 index 00000000..a5ae6c0f --- /dev/null +++ b/libdrm/dri_bufmgr.h @@ -0,0 +1,174 @@ +/************************************************************************** + * + * Copyright © 2007 Intel Corporation + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + * Keith Whitwell <keithw-at-tungstengraphics-dot-com> + * Eric Anholt <eric@anholt.net> + */ + +#ifndef _DRI_BUFMGR_H_ +#define _DRI_BUFMGR_H_ +#include <xf86drm.h> + +typedef struct _dri_bufmgr dri_bufmgr; +typedef struct _dri_bo dri_bo; + +struct _dri_bo { + /** + * Size in bytes of the buffer object. + * + * The size may be larger than the size originally requested for the + * allocation, such as being aligned to page size. + */ + unsigned long size; + /** + * Card virtual address (offset from the beginning of the aperture) for the + * object. Only valid while validated. + */ + unsigned long offset; + /** + * Virtual address for accessing the buffer data. Only valid while mapped. + */ + void *virtual; + /** Buffer manager context associated with this buffer object */ + dri_bufmgr *bufmgr; +}; + +/** + * Context for a buffer manager instance. + * + * Contains public methods followed by private storage for the buffer manager. + */ +struct _dri_bufmgr { + /** + * Allocate a buffer object. + * + * Buffer objects are not necessarily initially mapped into CPU virtual + * address space or graphics device aperture. They must be mapped using + * bo_map() to be used by the CPU, and validated for use using bo_validate() + * to be used from the graphics device. + */ + dri_bo *(*bo_alloc)(dri_bufmgr *bufmgr_ctx, const char *name, + unsigned long size, unsigned int alignment); + + /** Takes a reference on a buffer object */ + void (*bo_reference)(dri_bo *bo); + + /** + * Releases a reference on a buffer object, freeing the data if + * rerefences remain. + */ + void (*bo_unreference)(dri_bo *bo); + + /** + * Maps the buffer into userspace. + * + * This function will block waiting for any existing execution on the + * buffer to complete, first. The resulting mapping is available at + * buf->virtual. + */ + int (*bo_map)(dri_bo *buf, int write_enable); + + /** Reduces the refcount on the userspace mapping of the buffer object. */ + int (*bo_unmap)(dri_bo *buf); + + /** + * Write data into an object. + * + * This is an optional function, if missing, + * dri_bo will map/memcpy/unmap. + */ + int (*bo_subdata) (dri_bo *buf, unsigned long offset, + unsigned long size, const void *data); + + /** + * Read data from an object + * + * This is an optional function, if missing, + * dri_bo will map/memcpy/unmap. + */ + int (*bo_get_subdata) (dri_bo *bo, unsigned long offset, + unsigned long size, void *data); + + /** + * Waits for rendering to an object by the GPU to have completed. + * + * This is not required for any access to the BO by bo_map, bo_subdata, etc. + * It is merely a way for the driver to implement glFinish. + */ + void (*bo_wait_rendering) (dri_bo *bo); + + /** + * Tears down the buffer manager instance. + */ + void (*destroy)(dri_bufmgr *bufmgr); + + /** + * Processes the relocations, either in userland or by converting the list + * for use in batchbuffer submission. + * + * Kernel-based implementations will return a pointer to the arguments + * to be handed with batchbuffer submission to the kernel. The userland + * implementation performs the buffer validation and emits relocations + * into them the appopriate order. + * + * \param batch_buf buffer at the root of the tree of relocations + * \return argument to be completed and passed to the execbuffers ioctl + * (if any). + */ + void *(*process_relocs)(dri_bo *batch_buf); + + void (*post_submit)(dri_bo *batch_buf); + + int (*check_aperture_space)(dri_bo *bo); + int debug; /**< Enables verbose debugging printouts */ +}; + +dri_bo *dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size, + unsigned int alignment); +void dri_bo_reference(dri_bo *bo); +void dri_bo_unreference(dri_bo *bo); +int dri_bo_map(dri_bo *buf, int write_enable); +int dri_bo_unmap(dri_bo *buf); + +int dri_bo_subdata(dri_bo *bo, unsigned long offset, + unsigned long size, const void *data); +int dri_bo_get_subdata(dri_bo *bo, unsigned long offset, + unsigned long size, void *data); +void dri_bo_wait_rendering(dri_bo *bo); + +void dri_bufmgr_set_debug(dri_bufmgr *bufmgr, int enable_debug); +void dri_bufmgr_destroy(dri_bufmgr *bufmgr); + +void *dri_process_relocs(dri_bo *batch_buf); +void dri_post_process_relocs(dri_bo *batch_buf); +void dri_post_submit(dri_bo *batch_buf); +int dri_bufmgr_check_aperture_space(dri_bo *bo); + +#endif diff --git a/libdrm/intel/Makefile.am b/libdrm/intel/Makefile.am new file mode 100644 index 00000000..111204b1 --- /dev/null +++ b/libdrm/intel/Makefile.am @@ -0,0 +1,38 @@ +# Copyright © 2008 Intel Corporation +# +# 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. +# +# Authors: +# Eric Anholt <eric@anholt.net> + +AM_CFLAGS = \ + $(WARN_CFLAGS) \ + -I$(top_srcdir)/shared-core + +noinst_LTLIBRARIES = libdrm_intel.la + +libdrm_intel_la_SOURCES = \ + intel_bufmgr_fake.c \ + intel_bufmgr_gem.c \ + mm.c \ + mm.h + +libdrm_intelincludedir = ${includedir} +libdrm_intelinclude_HEADERS = intel_bufmgr.h diff --git a/libdrm/intel/intel_bufmgr.h b/libdrm/intel/intel_bufmgr.h new file mode 100644 index 00000000..1cf0d518 --- /dev/null +++ b/libdrm/intel/intel_bufmgr.h @@ -0,0 +1,95 @@ +/* + * Copyright © 2008 Intel Corporation + * + * 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. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +/** + * @file intel_bufmgr.h + * + * Public definitions of Intel-specific bufmgr functions. + */ + +#ifndef INTEL_BUFMGR_GEM_H +#define INTEL_BUFMGR_GEM_H + +#include "dri_bufmgr.h" + +/** + * Intel-specific bufmgr bits that follow immediately after the + * generic bufmgr structure. + */ +struct intel_bufmgr { + /** + * Add relocation entry in reloc_buf, which will be updated with the + * target buffer's real offset on on command submission. + * + * Relocations remain in place for the lifetime of the buffer object. + * + * \param reloc_buf Buffer to write the relocation into. + * \param read_domains GEM read domains which the buffer will be read into + * by the command that this relocation is part of. + * \param write_domains GEM read domains which the buffer will be dirtied + * in by the command that this relocation is part of. + * \param delta Constant value to be added to the relocation target's + * offset. + * \param offset Byte offset within batch_buf of the relocated pointer. + * \param target Buffer whose offset should be written into the relocation + * entry. + */ + int (*emit_reloc)(dri_bo *reloc_buf, + uint32_t read_domains, uint32_t write_domain, + uint32_t delta, uint32_t offset, dri_bo *target); +}; + +/* intel_bufmgr_gem.c */ +dri_bufmgr *intel_bufmgr_gem_init(int fd, int batch_size); +dri_bo *intel_bo_gem_create_from_name(dri_bufmgr *bufmgr, const char *name, + unsigned int handle); +void intel_bufmgr_gem_enable_reuse(dri_bufmgr *bufmgr); + +/* intel_bufmgr_fake.c */ +dri_bufmgr *intel_bufmgr_fake_init(unsigned long low_offset, void *low_virtual, + unsigned long size, + unsigned int (*fence_emit)(void *private), + int (*fence_wait)(void *private, + unsigned int cookie), + void *driver_priv); +dri_bo *intel_bo_fake_alloc_static(dri_bufmgr *bufmgr, const char *name, + unsigned long offset, unsigned long size, + void *virtual); + +void intel_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr); +void intel_bo_fake_disable_backing_store(dri_bo *bo, + void (*invalidate_cb)(dri_bo *bo, + void *ptr), + void *ptr); +void intel_bufmgr_fake_evict_all(dri_bufmgr *bufmgr); + +int intel_bo_emit_reloc(dri_bo *reloc_buf, + uint32_t read_domains, uint32_t write_domain, + uint32_t delta, uint32_t offset, dri_bo *target_buf); + +#endif /* INTEL_BUFMGR_GEM_H */ + diff --git a/libdrm/intel/intel_bufmgr_fake.c b/libdrm/intel/intel_bufmgr_fake.c new file mode 100644 index 00000000..3f5a22d3 --- /dev/null +++ b/libdrm/intel/intel_bufmgr_fake.c @@ -0,0 +1,1218 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * 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, sub license, 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. + * + **************************************************************************/ + +/* Originally a fake version of the buffer manager so that we can + * prototype the changes in a driver fairly quickly, has been fleshed + * out to a fully functional interim solution. + * + * Basically wraps the old style memory management in the new + * programming interface, but is more expressive and avoids many of + * the bugs in the old texture manager. + */ + +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "dri_bufmgr.h" +#include "intel_bufmgr.h" +#include "drm.h" +#include "i915_drm.h" +#include "mm.h" + +#define DBG(...) do { \ + if (bufmgr_fake->bufmgr.debug) \ + drmMsg(__VA_ARGS__); \ +} while (0) + +/* Internal flags: + */ +#define BM_NO_BACKING_STORE 0x00000001 +#define BM_NO_FENCE_SUBDATA 0x00000002 +#define BM_PINNED 0x00000004 + +/* Wrapper around mm.c's mem_block, which understands that you must + * wait for fences to expire before memory can be freed. This is + * specific to our use of memcpy for uploads - an upload that was + * processed through the command queue wouldn't need to care about + * fences. + */ +#define MAX_RELOCS 4096 + +struct fake_buffer_reloc +{ + /** Buffer object that the relocation points at. */ + dri_bo *target_buf; + /** Offset of the relocation entry within reloc_buf. */ + uint32_t offset; + /** Cached value of the offset when we last performed this relocation. */ + uint32_t last_target_offset; + /** Value added to target_buf's offset to get the relocation entry. */ + uint32_t delta; + /** Cache domains the target buffer is read into. */ + uint32_t read_domains; + /** Cache domain the target buffer will have dirty cachelines in. */ + uint32_t write_domain; +}; + +struct block { + struct block *next, *prev; + struct mem_block *mem; /* BM_MEM_AGP */ + + /** + * Marks that the block is currently in the aperture and has yet to be + * fenced. + */ + unsigned on_hardware:1; + /** + * Marks that the block is currently fenced (being used by rendering) and + * can't be freed until @fence is passed. + */ + unsigned fenced:1; + + /** Fence cookie for the block. */ + unsigned fence; /* Split to read_fence, write_fence */ + + dri_bo *bo; + void *virtual; +}; + +typedef struct _bufmgr_fake { + dri_bufmgr bufmgr; + struct intel_bufmgr intel_bufmgr; + + unsigned long low_offset; + unsigned long size; + void *virtual; + + struct mem_block *heap; + + unsigned buf_nr; /* for generating ids */ + + /** + * List of blocks which are currently in the GART but haven't been + * fenced yet. + */ + struct block on_hardware; + /** + * List of blocks which are in the GART and have an active fence on them. + */ + struct block fenced; + /** + * List of blocks which have an expired fence and are ready to be evicted. + */ + struct block lru; + + unsigned int last_fence; + + unsigned fail:1; + unsigned need_fence:1; + int thrashing; + + /** + * Driver callback to emit a fence, returning the cookie. + * + * Currently, this also requires that a write flush be emitted before + * emitting the fence, but this should change. + */ + unsigned int (*fence_emit)(void *private); + /** Driver callback to wait for a fence cookie to have passed. */ + int (*fence_wait)(void *private, unsigned int fence_cookie); + /** Driver-supplied argument to driver callbacks */ + void *driver_priv; + + int debug; + + int performed_rendering; + + /* keep track of the current total size of objects we have relocs for */ + unsigned long current_total_size; +} dri_bufmgr_fake; + +typedef struct _dri_bo_fake { + dri_bo bo; + + unsigned id; /* debug only */ + const char *name; + + unsigned dirty:1; + unsigned size_accounted:1; /*this buffers size has been accounted against the aperture */ + unsigned card_dirty:1; /* has the card written to this buffer - we make need to copy it back */ + unsigned int refcount; + /* Flags may consist of any of the DRM_BO flags, plus + * DRM_BO_NO_BACKING_STORE and BM_NO_FENCE_SUBDATA, which are the first two + * driver private flags. + */ + uint64_t flags; + /** Cache domains the target buffer is read into. */ + uint32_t read_domains; + /** Cache domain the target buffer will have dirty cachelines in. */ + uint32_t write_domain; + + unsigned int alignment; + int is_static, validated; + unsigned int map_count; + + /** relocation list */ + struct fake_buffer_reloc *relocs; + int nr_relocs; + + struct block *block; + void *backing_store; + void (*invalidate_cb)(dri_bo *bo, void *ptr); + void *invalidate_ptr; +} dri_bo_fake; + +static int clear_fenced(dri_bufmgr_fake *bufmgr_fake, + unsigned int fence_cookie); + +static int dri_fake_check_aperture_space(dri_bo *bo); + +#define MAXFENCE 0x7fffffff + +static int FENCE_LTE( unsigned a, unsigned b ) +{ + if (a == b) + return 1; + + if (a < b && b - a < (1<<24)) + return 1; + + if (a > b && MAXFENCE - a + b < (1<<24)) + return 1; + + return 0; +} + +static unsigned int +_fence_emit_internal(dri_bufmgr_fake *bufmgr_fake) +{ + bufmgr_fake->last_fence = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv); + return bufmgr_fake->last_fence; +} + +static void +_fence_wait_internal(dri_bufmgr_fake *bufmgr_fake, unsigned int cookie) +{ + int ret; + + ret = bufmgr_fake->fence_wait(bufmgr_fake->driver_priv, cookie); + if (ret != 0) { + drmMsg("%s:%d: Error %d waiting for fence.\n", __FILE__, __LINE__); + abort(); + } + clear_fenced(bufmgr_fake, cookie); +} + +static int +_fence_test(dri_bufmgr_fake *bufmgr_fake, unsigned fence) +{ + /* Slight problem with wrap-around: + */ + return fence == 0 || FENCE_LTE(fence, bufmgr_fake->last_fence); +} + +/** + * Allocate a memory manager block for the buffer. + */ +static int +alloc_block(dri_bo *bo) +{ + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + dri_bufmgr_fake *bufmgr_fake= (dri_bufmgr_fake *)bo->bufmgr; + struct block *block = (struct block *)calloc(sizeof *block, 1); + unsigned int align_log2 = ffs(bo_fake->alignment) - 1; + unsigned int sz; + + if (!block) + return 1; + + sz = (bo->size + bo_fake->alignment - 1) & ~(bo_fake->alignment - 1); + + block->mem = drmmmAllocMem(bufmgr_fake->heap, sz, align_log2, 0); + if (!block->mem) { + free(block); + return 0; + } + + DRMINITLISTHEAD(block); + + /* Insert at head or at tail??? + */ + DRMLISTADDTAIL(block, &bufmgr_fake->lru); + + block->virtual = (uint8_t *)bufmgr_fake->virtual + + block->mem->ofs - bufmgr_fake->low_offset; + block->bo = bo; + + bo_fake->block = block; + + return 1; +} + +/* Release the card storage associated with buf: + */ +static void free_block(dri_bufmgr_fake *bufmgr_fake, struct block *block) +{ + dri_bo_fake *bo_fake; + DBG("free block %p %08x %d %d\n", block, block->mem->ofs, block->on_hardware, block->fenced); + + if (!block) + return; + + bo_fake = (dri_bo_fake *)block->bo; + if (!(bo_fake->flags & BM_NO_BACKING_STORE) && (bo_fake->card_dirty == 1)) { + memcpy(bo_fake->backing_store, block->virtual, block->bo->size); + bo_fake->card_dirty = 1; + bo_fake->dirty = 1; + } + + if (block->on_hardware) { + block->bo = NULL; + } + else if (block->fenced) { + block->bo = NULL; + } + else { + DBG(" - free immediately\n"); + DRMLISTDEL(block); + + drmmmFreeMem(block->mem); + free(block); + } +} + +static void +alloc_backing_store(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + assert(!bo_fake->backing_store); + assert(!(bo_fake->flags & (BM_PINNED|BM_NO_BACKING_STORE))); + + bo_fake->backing_store = malloc(bo->size); + + DBG("alloc_backing - buf %d %p %d\n", bo_fake->id, bo_fake->backing_store, bo->size); + assert(bo_fake->backing_store); +} + +static void +free_backing_store(dri_bo *bo) +{ + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + if (bo_fake->backing_store) { + assert(!(bo_fake->flags & (BM_PINNED|BM_NO_BACKING_STORE))); + free(bo_fake->backing_store); + bo_fake->backing_store = NULL; + } +} + +static void +set_dirty(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + if (bo_fake->flags & BM_NO_BACKING_STORE && bo_fake->invalidate_cb != NULL) + bo_fake->invalidate_cb(bo, bo_fake->invalidate_ptr); + + assert(!(bo_fake->flags & BM_PINNED)); + + DBG("set_dirty - buf %d\n", bo_fake->id); + bo_fake->dirty = 1; +} + +static int +evict_lru(dri_bufmgr_fake *bufmgr_fake, unsigned int max_fence) +{ + struct block *block, *tmp; + + DBG("%s\n", __FUNCTION__); + + DRMLISTFOREACHSAFE(block, tmp, &bufmgr_fake->lru) { + dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo; + + if (bo_fake != NULL && (bo_fake->flags & BM_NO_FENCE_SUBDATA)) + continue; + + if (block->fence && max_fence && !FENCE_LTE(block->fence, max_fence)) + return 0; + + set_dirty(&bo_fake->bo); + bo_fake->block = NULL; + + free_block(bufmgr_fake, block); + return 1; + } + + return 0; +} + +static int +evict_mru(dri_bufmgr_fake *bufmgr_fake) +{ + struct block *block, *tmp; + + DBG("%s\n", __FUNCTION__); + + DRMLISTFOREACHSAFEREVERSE(block, tmp, &bufmgr_fake->lru) { + dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo; + + if (bo_fake && (bo_fake->flags & BM_NO_FENCE_SUBDATA)) + continue; + + set_dirty(&bo_fake->bo); + bo_fake->block = NULL; + + free_block(bufmgr_fake, block); + return 1; + } + + return 0; +} + +/** + * Removes all objects from the fenced list older than the given fence. + */ +static int clear_fenced(dri_bufmgr_fake *bufmgr_fake, + unsigned int fence_cookie) +{ + struct block *block, *tmp; + int ret = 0; + + DRMLISTFOREACHSAFE(block, tmp, &bufmgr_fake->fenced) { + assert(block->fenced); + + if (_fence_test(bufmgr_fake, block->fence)) { + + block->fenced = 0; + + if (!block->bo) { + DBG("delayed free: offset %x sz %x\n", + block->mem->ofs, block->mem->size); + DRMLISTDEL(block); + drmmmFreeMem(block->mem); + free(block); + } + else { + DBG("return to lru: offset %x sz %x\n", + block->mem->ofs, block->mem->size); + DRMLISTDEL(block); + DRMLISTADDTAIL(block, &bufmgr_fake->lru); + } + + ret = 1; + } + else { + /* Blocks are ordered by fence, so if one fails, all from + * here will fail also: + */ + DBG("fence not passed: offset %x sz %x %d %d \n", + block->mem->ofs, block->mem->size, block->fence, bufmgr_fake->last_fence); + break; + } + } + + DBG("%s: %d\n", __FUNCTION__, ret); + return ret; +} + +static void fence_blocks(dri_bufmgr_fake *bufmgr_fake, unsigned fence) +{ + struct block *block, *tmp; + + DRMLISTFOREACHSAFE(block, tmp, &bufmgr_fake->on_hardware) { + DBG("Fence block %p (sz 0x%x ofs %x buf %p) with fence %d\n", block, + block->mem->size, block->mem->ofs, block->bo, fence); + block->fence = fence; + + block->on_hardware = 0; + block->fenced = 1; + + /* Move to tail of pending list here + */ + DRMLISTDEL(block); + DRMLISTADDTAIL(block, &bufmgr_fake->fenced); + } + + assert(DRMLISTEMPTY(&bufmgr_fake->on_hardware)); +} + +static int evict_and_alloc_block(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + assert(bo_fake->block == NULL); + + /* Search for already free memory: + */ + if (alloc_block(bo)) + return 1; + + /* If we're not thrashing, allow lru eviction to dig deeper into + * recently used textures. We'll probably be thrashing soon: + */ + if (!bufmgr_fake->thrashing) { + while (evict_lru(bufmgr_fake, 0)) + if (alloc_block(bo)) + return 1; + } + + /* Keep thrashing counter alive? + */ + if (bufmgr_fake->thrashing) + bufmgr_fake->thrashing = 20; + + /* Wait on any already pending fences - here we are waiting for any + * freed memory that has been submitted to hardware and fenced to + * become available: + */ + while (!DRMLISTEMPTY(&bufmgr_fake->fenced)) { + uint32_t fence = bufmgr_fake->fenced.next->fence; + _fence_wait_internal(bufmgr_fake, fence); + + if (alloc_block(bo)) + return 1; + } + + if (!DRMLISTEMPTY(&bufmgr_fake->on_hardware)) { + while (!DRMLISTEMPTY(&bufmgr_fake->fenced)) { + uint32_t fence = bufmgr_fake->fenced.next->fence; + _fence_wait_internal(bufmgr_fake, fence); + } + + if (!bufmgr_fake->thrashing) { + DBG("thrashing\n"); + } + bufmgr_fake->thrashing = 20; + + if (alloc_block(bo)) + return 1; + } + + while (evict_mru(bufmgr_fake)) + if (alloc_block(bo)) + return 1; + + DBG("%s 0x%x bytes failed\n", __FUNCTION__, bo->size); + + return 0; +} + +/*********************************************************************** + * Public functions + */ + +/** + * Wait for hardware idle by emitting a fence and waiting for it. + */ +static void +dri_bufmgr_fake_wait_idle(dri_bufmgr_fake *bufmgr_fake) +{ + unsigned int cookie; + + cookie = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv); + _fence_wait_internal(bufmgr_fake, cookie); +} + +/** + * Wait for rendering to a buffer to complete. + * + * It is assumed that the bathcbuffer which performed the rendering included + * the necessary flushing. + */ +static void +dri_fake_bo_wait_rendering(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + if (bo_fake->block == NULL || !bo_fake->block->fenced) + return; + + _fence_wait_internal(bufmgr_fake, bo_fake->block->fence); +} + +/* Specifically ignore texture memory sharing. + * -- just evict everything + * -- and wait for idle + */ +void +intel_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr; + struct block *block, *tmp; + + bufmgr_fake->need_fence = 1; + bufmgr_fake->fail = 0; + + /* Wait for hardware idle. We don't know where acceleration has been + * happening, so we'll need to wait anyway before letting anything get + * put on the card again. + */ + dri_bufmgr_fake_wait_idle(bufmgr_fake); + + /* Check that we hadn't released the lock without having fenced the last + * set of buffers. + */ + assert(DRMLISTEMPTY(&bufmgr_fake->fenced)); + assert(DRMLISTEMPTY(&bufmgr_fake->on_hardware)); + + DRMLISTFOREACHSAFE(block, tmp, &bufmgr_fake->lru) { + assert(_fence_test(bufmgr_fake, block->fence)); + set_dirty(block->bo); + } +} + +static dri_bo * +dri_fake_bo_alloc(dri_bufmgr *bufmgr, const char *name, + unsigned long size, unsigned int alignment) +{ + dri_bufmgr_fake *bufmgr_fake; + dri_bo_fake *bo_fake; + + bufmgr_fake = (dri_bufmgr_fake *)bufmgr; + + assert(size != 0); + + bo_fake = calloc(1, sizeof(*bo_fake)); + if (!bo_fake) + return NULL; + + bo_fake->bo.size = size; + bo_fake->bo.offset = -1; + bo_fake->bo.virtual = NULL; + bo_fake->bo.bufmgr = bufmgr; + bo_fake->refcount = 1; + + /* Alignment must be a power of two */ + assert((alignment & (alignment - 1)) == 0); + if (alignment == 0) + alignment = 1; + bo_fake->alignment = alignment; + bo_fake->id = ++bufmgr_fake->buf_nr; + bo_fake->name = name; + bo_fake->flags = 0; + bo_fake->is_static = 0; + + DBG("drm_bo_alloc: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name, + bo_fake->bo.size / 1024); + + return &bo_fake->bo; +} + +dri_bo * +intel_bo_fake_alloc_static(dri_bufmgr *bufmgr, const char *name, + unsigned long offset, unsigned long size, + void *virtual) +{ + dri_bufmgr_fake *bufmgr_fake; + dri_bo_fake *bo_fake; + + bufmgr_fake = (dri_bufmgr_fake *)bufmgr; + + assert(size != 0); + + bo_fake = calloc(1, sizeof(*bo_fake)); + if (!bo_fake) + return NULL; + + bo_fake->bo.size = size; + bo_fake->bo.offset = offset; + bo_fake->bo.virtual = virtual; + bo_fake->bo.bufmgr = bufmgr; + bo_fake->refcount = 1; + bo_fake->id = ++bufmgr_fake->buf_nr; + bo_fake->name = name; + bo_fake->flags = BM_PINNED | DRM_BO_FLAG_NO_MOVE; + bo_fake->is_static = 1; + + DBG("drm_bo_alloc_static: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name, + bo_fake->bo.size / 1024); + + return &bo_fake->bo; +} + +static void +dri_fake_bo_reference(dri_bo *bo) +{ + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + bo_fake->refcount++; +} + +static void +dri_fake_bo_unreference(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + int i; + + if (!bo) + return; + + if (--bo_fake->refcount == 0) { + assert(bo_fake->map_count == 0); + /* No remaining references, so free it */ + if (bo_fake->block) + free_block(bufmgr_fake, bo_fake->block); + free_backing_store(bo); + + for (i = 0; i < bo_fake->nr_relocs; i++) + dri_bo_unreference(bo_fake->relocs[i].target_buf); + + DBG("drm_bo_unreference: free buf %d %s\n", bo_fake->id, bo_fake->name); + + free(bo_fake->relocs); + free(bo); + + return; + } +} + +/** + * Set the buffer as not requiring backing store, and instead get the callback + * invoked whenever it would be set dirty. + */ +void intel_bo_fake_disable_backing_store(dri_bo *bo, + void (*invalidate_cb)(dri_bo *bo, + void *ptr), + void *ptr) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + if (bo_fake->backing_store) + free_backing_store(bo); + + bo_fake->flags |= BM_NO_BACKING_STORE; + + DBG("disable_backing_store set buf %d dirty\n", bo_fake->id); + bo_fake->dirty = 1; + bo_fake->invalidate_cb = invalidate_cb; + bo_fake->invalidate_ptr = ptr; + + /* Note that it is invalid right from the start. Also note + * invalidate_cb is called with the bufmgr locked, so cannot + * itself make bufmgr calls. + */ + if (invalidate_cb != NULL) + invalidate_cb(bo, ptr); +} + +/** + * Map a buffer into bo->virtual, allocating either card memory space (If + * BM_NO_BACKING_STORE or BM_PINNED) or backing store, as necessary. + */ +static int +dri_fake_bo_map(dri_bo *bo, int write_enable) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + /* Static buffers are always mapped. */ + if (bo_fake->is_static) + return 0; + + /* Allow recursive mapping. Mesa may recursively map buffers with + * nested display loops, and it is used internally in bufmgr_fake + * for relocation. + */ + if (bo_fake->map_count++ != 0) + return 0; + + { + DBG("drm_bo_map: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name, + bo_fake->bo.size / 1024); + + if (bo->virtual != NULL) { + drmMsg("%s: already mapped\n", __FUNCTION__); + abort(); + } + else if (bo_fake->flags & (BM_NO_BACKING_STORE|BM_PINNED)) { + + if (!bo_fake->block && !evict_and_alloc_block(bo)) { + DBG("%s: alloc failed\n", __FUNCTION__); + bufmgr_fake->fail = 1; + return 1; + } + else { + assert(bo_fake->block); + bo_fake->dirty = 0; + + if (!(bo_fake->flags & BM_NO_FENCE_SUBDATA) && + bo_fake->block->fenced) { + dri_fake_bo_wait_rendering(bo); + } + + bo->virtual = bo_fake->block->virtual; + } + } + else { + if (write_enable) + set_dirty(bo); + + if (bo_fake->backing_store == 0) + alloc_backing_store(bo); + + bo->virtual = bo_fake->backing_store; + } + } + + return 0; +} + +static int +dri_fake_bo_unmap(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + /* Static buffers are always mapped. */ + if (bo_fake->is_static) + return 0; + + assert(bo_fake->map_count != 0); + if (--bo_fake->map_count != 0) + return 0; + + DBG("drm_bo_unmap: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name, + bo_fake->bo.size / 1024); + + bo->virtual = NULL; + + return 0; +} + +static void +dri_fake_kick_all(dri_bufmgr_fake *bufmgr_fake) +{ + struct block *block, *tmp; + + bufmgr_fake->performed_rendering = 0; + /* okay for ever BO that is on the HW kick it off. + seriously not afraid of the POLICE right now */ + DRMLISTFOREACHSAFE(block, tmp, &bufmgr_fake->on_hardware) { + dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo; + + block->on_hardware = 0; + free_block(bufmgr_fake, block); + bo_fake->block = NULL; + bo_fake->validated = 0; + if (!(bo_fake->flags & BM_NO_BACKING_STORE)) + bo_fake->dirty = 1; + } +} + +static int +dri_fake_bo_validate(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + + /* XXX: Sanity-check whether we've already validated this one under + * different flags. See drmAddValidateItem(). + */ + bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + + DBG("drm_bo_validate: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name, + bo_fake->bo.size / 1024); + + /* Sanity check: Buffers should be unmapped before being validated. + * This is not so much of a problem for bufmgr_fake, but TTM refuses, + * and the problem is harder to debug there. + */ + assert(bo_fake->map_count == 0); + + if (bo_fake->is_static) { + /* Add it to the needs-fence list */ + bufmgr_fake->need_fence = 1; + return 0; + } + + /* reset size accounted */ + bo_fake->size_accounted = 0; + + /* Allocate the card memory */ + if (!bo_fake->block && !evict_and_alloc_block(bo)) { + bufmgr_fake->fail = 1; + DBG("Failed to validate buf %d:%s\n", bo_fake->id, bo_fake->name); + return -1; + } + + assert(bo_fake->block); + assert(bo_fake->block->bo == &bo_fake->bo); + + bo->offset = bo_fake->block->mem->ofs; + + /* Upload the buffer contents if necessary */ + if (bo_fake->dirty) { + DBG("Upload dirty buf %d:%s, sz %d offset 0x%x\n", bo_fake->id, + bo_fake->name, bo->size, bo_fake->block->mem->ofs); + + assert(!(bo_fake->flags & + (BM_NO_BACKING_STORE|BM_PINNED))); + + /* Actually, should be able to just wait for a fence on the memory, + * which we would be tracking when we free it. Waiting for idle is + * a sufficiently large hammer for now. + */ + dri_bufmgr_fake_wait_idle(bufmgr_fake); + + /* we may never have mapped this BO so it might not have any backing + * store if this happens it should be rare, but 0 the card memory + * in any case */ + if (bo_fake->backing_store) + memcpy(bo_fake->block->virtual, bo_fake->backing_store, bo->size); + else + memset(bo_fake->block->virtual, 0, bo->size); + + bo_fake->dirty = 0; + } + + bo_fake->block->fenced = 0; + bo_fake->block->on_hardware = 1; + DRMLISTDEL(bo_fake->block); + DRMLISTADDTAIL(bo_fake->block, &bufmgr_fake->on_hardware); + + bo_fake->validated = 1; + bufmgr_fake->need_fence = 1; + + return 0; +} + +static void +dri_fake_fence_validated(dri_bufmgr *bufmgr) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr; + unsigned int cookie; + + cookie = _fence_emit_internal(bufmgr_fake); + fence_blocks(bufmgr_fake, cookie); + + DBG("drm_fence_validated: 0x%08x cookie\n", cookie); +} + +static void +dri_fake_destroy(dri_bufmgr *bufmgr) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr; + + drmmmDestroy(bufmgr_fake->heap); + free(bufmgr); +} + +static int +dri_fake_emit_reloc(dri_bo *reloc_buf, + uint32_t read_domains, uint32_t write_domain, + uint32_t delta, uint32_t offset, dri_bo *target_buf) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)reloc_buf->bufmgr; + struct fake_buffer_reloc *r; + dri_bo_fake *reloc_fake = (dri_bo_fake *)reloc_buf; + dri_bo_fake *target_fake = (dri_bo_fake *)target_buf; + int i; + + assert(reloc_buf); + assert(target_buf); + + assert(target_fake->is_static || target_fake->size_accounted); + + if (reloc_fake->relocs == NULL) { + reloc_fake->relocs = malloc(sizeof(struct fake_buffer_reloc) * + MAX_RELOCS); + } + + r = &reloc_fake->relocs[reloc_fake->nr_relocs++]; + + assert(reloc_fake->nr_relocs <= MAX_RELOCS); + + dri_bo_reference(target_buf); + + r->target_buf = target_buf; + r->offset = offset; + r->last_target_offset = target_buf->offset; + r->delta = delta; + r->read_domains = read_domains; + r->write_domain = write_domain; + + if (bufmgr_fake->debug) { + /* Check that a conflicting relocation hasn't already been emitted. */ + for (i = 0; i < reloc_fake->nr_relocs - 1; i++) { + struct fake_buffer_reloc *r2 = &reloc_fake->relocs[i]; + + assert(r->offset != r2->offset); + } + } + + return 0; +} + +/** + * Incorporates the validation flags associated with each relocation into + * the combined validation flags for the buffer on this batchbuffer submission. + */ +static void +dri_fake_calculate_domains(dri_bo *bo) +{ + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + int i; + + for (i = 0; i < bo_fake->nr_relocs; i++) { + struct fake_buffer_reloc *r = &bo_fake->relocs[i]; + dri_bo_fake *target_fake = (dri_bo_fake *)r->target_buf; + + /* Do the same for the tree of buffers we depend on */ + dri_fake_calculate_domains(r->target_buf); + + target_fake->read_domains |= r->read_domains; + if (target_fake->write_domain != 0) + target_fake->write_domain = r->write_domain; + } +} + + +static int +dri_fake_reloc_and_validate_buffer(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + int i, ret; + + assert(bo_fake->map_count == 0); + + for (i = 0; i < bo_fake->nr_relocs; i++) { + struct fake_buffer_reloc *r = &bo_fake->relocs[i]; + dri_bo_fake *target_fake = (dri_bo_fake *)r->target_buf; + uint32_t reloc_data; + + /* Validate the target buffer if that hasn't been done. */ + if (!target_fake->validated) { + ret = dri_fake_reloc_and_validate_buffer(r->target_buf); + if (ret != 0) { + if (bo->virtual != NULL) + dri_bo_unmap(bo); + return ret; + } + } + + /* Calculate the value of the relocation entry. */ + if (r->target_buf->offset != r->last_target_offset) { + reloc_data = r->target_buf->offset + r->delta; + + if (bo->virtual == NULL) + dri_bo_map(bo, 1); + + *(uint32_t *)((uint8_t *)bo->virtual + r->offset) = reloc_data; + + r->last_target_offset = r->target_buf->offset; + } + } + + if (bo->virtual != NULL) + dri_bo_unmap(bo); + + if (bo_fake->write_domain != 0) { + if (!(bo_fake->flags & (BM_NO_BACKING_STORE|BM_PINNED))) { + if (bo_fake->backing_store == 0) + alloc_backing_store(bo); + + bo_fake->card_dirty = 1; + } + bufmgr_fake->performed_rendering = 1; + } + + return dri_fake_bo_validate(bo); +} + +static void * +dri_fake_process_relocs(dri_bo *batch_buf) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)batch_buf->bufmgr; + dri_bo_fake *batch_fake = (dri_bo_fake *)batch_buf; + int ret; + int retry_count = 0; + + bufmgr_fake->performed_rendering = 0; + + dri_fake_calculate_domains(batch_buf); + + batch_fake->read_domains = DRM_GEM_DOMAIN_I915_COMMAND; + + /* we've ran out of RAM so blow the whole lot away and retry */ + restart: + ret = dri_fake_reloc_and_validate_buffer(batch_buf); + if (bufmgr_fake->fail == 1) { + if (retry_count == 0) { + retry_count++; + dri_fake_kick_all(bufmgr_fake); + bufmgr_fake->fail = 0; + goto restart; + } else /* dump out the memory here */ + drmmmDumpMemInfo(bufmgr_fake->heap); + } + + assert(ret == 0); + + bufmgr_fake->current_total_size = 0; + return NULL; +} + +static void +dri_bo_fake_post_submit(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + int i; + + for (i = 0; i < bo_fake->nr_relocs; i++) { + struct fake_buffer_reloc *r = &bo_fake->relocs[i]; + dri_bo_fake *target_fake = (dri_bo_fake *)r->target_buf; + + if (target_fake->validated) + dri_bo_fake_post_submit(r->target_buf); + + DBG("%s@0x%08x + 0x%08x -> %s@0x%08x + 0x%08x\n", + bo_fake->name, (uint32_t)bo->offset, r->offset, + target_fake->name, (uint32_t)r->target_buf->offset, r->delta); + } + + assert(bo_fake->map_count == 0); + bo_fake->validated = 0; + bo_fake->read_domains = 0; + bo_fake->write_domain = 0; +} + + +static void +dri_fake_post_submit(dri_bo *batch_buf) +{ + dri_fake_fence_validated(batch_buf->bufmgr); + + dri_bo_fake_post_submit(batch_buf); +} + +static int +dri_fake_check_aperture_space(dri_bo *bo) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr; + dri_bo_fake *bo_fake = (dri_bo_fake *)bo; + unsigned int sz; + + sz = (bo->size + bo_fake->alignment - 1) & ~(bo_fake->alignment - 1); + + if (bo_fake->size_accounted || bo_fake->is_static) + return 0; + + if (bufmgr_fake->current_total_size + sz > bufmgr_fake->size) { + DBG("check_space: %s bo %d %d overflowed bufmgr size %d\n", bo_fake->name, bo_fake->id, sz, bufmgr_fake->size); + return -1; + } + + bufmgr_fake->current_total_size += sz; + bo_fake->size_accounted = 1; + DBG("drm_check_space: buf %d, %s %d %d\n", bo_fake->id, bo_fake->name, bo->size, bufmgr_fake->current_total_size); + return 0; +} + +/** + * Evicts all buffers, waiting for fences to pass and copying contents out + * as necessary. + * + * Used by the X Server on LeaveVT, when the card memory is no longer our + * own. + */ +void +intel_bufmgr_fake_evict_all(dri_bufmgr *bufmgr) +{ + dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr; + struct block *block, *tmp; + + bufmgr_fake->need_fence = 1; + bufmgr_fake->fail = 0; + + /* Wait for hardware idle. We don't know where acceleration has been + * happening, so we'll need to wait anyway before letting anything get + * put on the card again. + */ + dri_bufmgr_fake_wait_idle(bufmgr_fake); + + /* Check that we hadn't released the lock without having fenced the last + * set of buffers. + */ + assert(DRMLISTEMPTY(&bufmgr_fake->fenced)); + assert(DRMLISTEMPTY(&bufmgr_fake->on_hardware)); + + DRMLISTFOREACHSAFE(block, tmp, &bufmgr_fake->lru) { + /* Releases the memory, and memcpys dirty contents out if necessary. */ + free_block(bufmgr_fake, block); + } +} + +dri_bufmgr * +intel_bufmgr_fake_init(unsigned long low_offset, void *low_virtual, + unsigned long size, + unsigned int (*fence_emit)(void *private), + int (*fence_wait)(void *private, unsigned int cookie), + void *driver_priv) +{ + dri_bufmgr_fake *bufmgr_fake; + + bufmgr_fake = calloc(1, sizeof(*bufmgr_fake)); + + /* Initialize allocator */ + DRMINITLISTHEAD(&bufmgr_fake->fenced); + DRMINITLISTHEAD(&bufmgr_fake->on_hardware); + DRMINITLISTHEAD(&bufmgr_fake->lru); + + bufmgr_fake->low_offset = low_offset; + bufmgr_fake->virtual = low_virtual; + bufmgr_fake->size = size; + bufmgr_fake->heap = drmmmInit(low_offset, size); + + /* Hook in methods */ + bufmgr_fake->bufmgr.bo_alloc = dri_fake_bo_alloc; + bufmgr_fake->bufmgr.bo_reference = dri_fake_bo_reference; + bufmgr_fake->bufmgr.bo_unreference = dri_fake_bo_unreference; + bufmgr_fake->bufmgr.bo_map = dri_fake_bo_map; + bufmgr_fake->bufmgr.bo_unmap = dri_fake_bo_unmap; + bufmgr_fake->bufmgr.bo_wait_rendering = dri_fake_bo_wait_rendering; + bufmgr_fake->bufmgr.destroy = dri_fake_destroy; + bufmgr_fake->bufmgr.process_relocs = dri_fake_process_relocs; + bufmgr_fake->bufmgr.post_submit = dri_fake_post_submit; + bufmgr_fake->bufmgr.check_aperture_space = dri_fake_check_aperture_space; + bufmgr_fake->bufmgr.debug = 0; + bufmgr_fake->intel_bufmgr.emit_reloc = dri_fake_emit_reloc; + + bufmgr_fake->fence_emit = fence_emit; + bufmgr_fake->fence_wait = fence_wait; + bufmgr_fake->driver_priv = driver_priv; + + return &bufmgr_fake->bufmgr; +} + diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c new file mode 100644 index 00000000..a65ae982 --- /dev/null +++ b/libdrm/intel/intel_bufmgr_gem.c @@ -0,0 +1,833 @@ +/************************************************************************** + * + * Copyright © 2007 Red Hat Inc. + * Copyright © 2007 Intel Corporation + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + * Keith Whitwell <keithw-at-tungstengraphics-dot-com> + * Eric Anholt <eric@anholt.net> + * Dave Airlie <airlied@linux.ie> + */ + +#include <xf86drm.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <assert.h> +#include <sys/ioctl.h> +#include <sys/mman.h> + +#include "errno.h" +#include "dri_bufmgr.h" +#include "intel_bufmgr.h" +#include "string.h" + +#include "i915_drm.h" + +#define DBG(...) do { \ + if (bufmgr_gem->bufmgr.debug) \ + fprintf(stderr, __VA_ARGS__); \ +} while (0) + +typedef struct _dri_bo_gem dri_bo_gem; + +struct dri_gem_bo_bucket { + dri_bo_gem *head, **tail; + /** + * Limit on the number of entries in this bucket. + * + * 0 means that this caching at this bucket size is disabled. + * -1 means that there is no limit to caching at this size. + */ + int max_entries; + int num_entries; +}; + +/* Arbitrarily chosen, 16 means that the maximum size we'll cache for reuse + * is 1 << 16 pages, or 256MB. + */ +#define INTEL_GEM_BO_BUCKETS 16 +typedef struct _dri_bufmgr_gem { + dri_bufmgr bufmgr; + + struct intel_bufmgr intel_bufmgr; + + int fd; + + int max_relocs; + + struct drm_i915_gem_exec_object *exec_objects; + dri_bo **exec_bos; + int exec_size; + int exec_count; + + /** Array of lists of cached gem objects of power-of-two sizes */ + struct dri_gem_bo_bucket cache_bucket[INTEL_GEM_BO_BUCKETS]; + + struct drm_i915_gem_execbuffer exec_arg; +} dri_bufmgr_gem; + +struct _dri_bo_gem { + dri_bo bo; + + int refcount; + /** Boolean whether the mmap ioctl has been called for this buffer yet. */ + int mapped; + uint32_t gem_handle; + const char *name; + + /** + * Index of the buffer within the validation list while preparing a + * batchbuffer execution. + */ + int validate_index; + + /** + * Boolean whether set_domain to CPU is current + * Set when set_domain has been called + * Cleared when a batch has been submitted + */ + int cpu_domain_set; + + /** Array passed to the DRM containing relocation information. */ + struct drm_i915_gem_relocation_entry *relocs; + /** Array of bos corresponding to relocs[i].target_handle */ + dri_bo **reloc_target_bo; + /** Number of entries in relocs */ + int reloc_count; + /** Mapped address for the buffer */ + void *virtual; + + /** free list */ + dri_bo_gem *next; +}; + +static int +logbase2(int n) +{ + int i = 1; + int log2 = 0; + + while (n > i) { + i *= 2; + log2++; + } + + return log2; +} + +static struct dri_gem_bo_bucket * +dri_gem_bo_bucket_for_size(dri_bufmgr_gem *bufmgr_gem, unsigned long size) +{ + int i; + + /* We only do buckets in power of two increments */ + if ((size & (size - 1)) != 0) + return NULL; + + /* We should only see sizes rounded to pages. */ + assert((size % 4096) == 0); + + /* We always allocate in units of pages */ + i = ffs(size / 4096) - 1; + if (i >= INTEL_GEM_BO_BUCKETS) + return NULL; + + return &bufmgr_gem->cache_bucket[i]; +} + + +static void dri_gem_dump_validation_list(dri_bufmgr_gem *bufmgr_gem) +{ + int i, j; + + for (i = 0; i < bufmgr_gem->exec_count; i++) { + dri_bo *bo = bufmgr_gem->exec_bos[i]; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + + if (bo_gem->relocs == NULL) { + DBG("%2d: %d (%s)\n", i, bo_gem->gem_handle, bo_gem->name); + continue; + } + + for (j = 0; j < bo_gem->reloc_count; j++) { + dri_bo *target_bo = bo_gem->reloc_target_bo[j]; + dri_bo_gem *target_gem = (dri_bo_gem *)target_bo; + + DBG("%2d: %d (%s)@0x%08llx -> %d (%s)@0x%08lx + 0x%08x\n", + i, + bo_gem->gem_handle, bo_gem->name, bo_gem->relocs[j].offset, + target_gem->gem_handle, target_gem->name, target_bo->offset, + bo_gem->relocs[j].delta); + } + } +} + +/** + * Adds the given buffer to the list of buffers to be validated (moved into the + * appropriate memory type) with the next batch submission. + * + * If a buffer is validated multiple times in a batch submission, it ends up + * with the intersection of the memory type flags and the union of the + * access flags. + */ +static void +intel_add_validate_buffer(dri_bo *bo) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + int index; + + if (bo_gem->validate_index != -1) + return; + + /* Extend the array of validation entries as necessary. */ + if (bufmgr_gem->exec_count == bufmgr_gem->exec_size) { + int new_size = bufmgr_gem->exec_size * 2; + + if (new_size == 0) + new_size = 5; + + bufmgr_gem->exec_objects = + realloc(bufmgr_gem->exec_objects, + sizeof(*bufmgr_gem->exec_objects) * new_size); + bufmgr_gem->exec_bos = + realloc(bufmgr_gem->exec_bos, + sizeof(*bufmgr_gem->exec_bos) * new_size); + bufmgr_gem->exec_size = new_size; + } + + index = bufmgr_gem->exec_count; + bo_gem->validate_index = index; + /* Fill in array entry */ + bufmgr_gem->exec_objects[index].handle = bo_gem->gem_handle; + bufmgr_gem->exec_objects[index].relocation_count = bo_gem->reloc_count; + bufmgr_gem->exec_objects[index].relocs_ptr = (uintptr_t)bo_gem->relocs; + bufmgr_gem->exec_objects[index].alignment = 0; + bufmgr_gem->exec_objects[index].offset = 0; + bufmgr_gem->exec_bos[index] = bo; + dri_bo_reference(bo); + bufmgr_gem->exec_count++; +} + + +#define RELOC_BUF_SIZE(x) ((I915_RELOC_HEADER + x * I915_RELOC0_STRIDE) * \ + sizeof(uint32_t)) + +static int +intel_setup_reloc_list(dri_bo *bo) +{ + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + + bo_gem->relocs = malloc(bufmgr_gem->max_relocs * + sizeof(struct drm_i915_gem_relocation_entry)); + bo_gem->reloc_target_bo = malloc(bufmgr_gem->max_relocs * sizeof(dri_bo *)); + + return 0; +} + +static dri_bo * +dri_gem_bo_alloc(dri_bufmgr *bufmgr, const char *name, + unsigned long size, unsigned int alignment) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr; + dri_bo_gem *bo_gem; + unsigned int page_size = getpagesize(); + int ret; + struct dri_gem_bo_bucket *bucket; + int alloc_from_cache = 0; + unsigned long bo_size; + + /* Round the allocated size up to a power of two number of pages. */ + bo_size = 1 << logbase2(size); + if (bo_size < page_size) + bo_size = page_size; + bucket = dri_gem_bo_bucket_for_size(bufmgr_gem, bo_size); + + /* If we don't have caching at this size, don't actually round the + * allocation up. + */ + if (bucket == NULL || bucket->max_entries == 0) { + bo_size = size; + if (bo_size < page_size) + bo_size = page_size; + } + + /* Get a buffer out of the cache if available */ + if (bucket != NULL && bucket->num_entries > 0) { + struct drm_i915_gem_busy busy; + + bo_gem = bucket->head; + busy.handle = bo_gem->gem_handle; + + ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy); + alloc_from_cache = (ret == 0 && busy.busy == 0); + + if (alloc_from_cache) { + bucket->head = bo_gem->next; + if (bo_gem->next == NULL) + bucket->tail = &bucket->head; + bucket->num_entries--; + } + } + + if (!alloc_from_cache) { + struct drm_gem_create create; + + bo_gem = calloc(1, sizeof(*bo_gem)); + if (!bo_gem) + return NULL; + + bo_gem->bo.size = bo_size; + memset(&create, 0, sizeof(create)); + create.size = bo_size; + + ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CREATE, &create); + bo_gem->gem_handle = create.handle; + if (ret != 0) { + free(bo_gem); + return NULL; + } + bo_gem->bo.bufmgr = bufmgr; + } + + bo_gem->name = name; + bo_gem->refcount = 1; + bo_gem->validate_index = -1; + + DBG("bo_create: buf %d (%s) %ldb\n", + bo_gem->gem_handle, bo_gem->name, size); + + return &bo_gem->bo; +} + +/** + * Returns a dri_bo wrapping the given buffer object handle. + * + * This can be used when one application needs to pass a buffer object + * to another. + */ +dri_bo * +intel_bo_gem_create_from_name(dri_bufmgr *bufmgr, const char *name, + unsigned int handle) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr; + dri_bo_gem *bo_gem; + int ret; + struct drm_gem_open open_arg; + + bo_gem = calloc(1, sizeof(*bo_gem)); + if (!bo_gem) + return NULL; + + memset(&open_arg, 0, sizeof(open_arg)); + open_arg.name = handle; + ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_OPEN, &open_arg); + if (ret != 0) { + fprintf(stderr, "Couldn't reference %s handle 0x%08x: %s\n", + name, handle, strerror(-ret)); + free(bo_gem); + return NULL; + } + bo_gem->bo.size = open_arg.size; + bo_gem->bo.offset = 0; + bo_gem->bo.virtual = NULL; + bo_gem->bo.bufmgr = bufmgr; + bo_gem->name = name; + bo_gem->refcount = 1; + bo_gem->validate_index = -1; + bo_gem->gem_handle = open_arg.handle; + + DBG("bo_create_from_handle: %d (%s)\n", handle, bo_gem->name); + + return &bo_gem->bo; +} + +static void +dri_gem_bo_reference(dri_bo *bo) +{ + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + + bo_gem->refcount++; +} + +static void +dri_gem_bo_free(dri_bo *bo) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + struct drm_gem_close close; + int ret; + + if (bo_gem->mapped) + munmap (bo_gem->virtual, bo_gem->bo.size); + + /* Close this object */ + close.handle = bo_gem->gem_handle; + ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close); + if (ret != 0) { + fprintf(stderr, + "DRM_IOCTL_GEM_CLOSE %d failed (%s): %s\n", + bo_gem->gem_handle, bo_gem->name, strerror(-ret)); + } + free(bo); +} + +static void +dri_gem_bo_unreference(dri_bo *bo) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + + if (!bo) + return; + + if (--bo_gem->refcount == 0) { + struct dri_gem_bo_bucket *bucket; + + if (bo_gem->relocs != NULL) { + int i; + + /* Unreference all the target buffers */ + for (i = 0; i < bo_gem->reloc_count; i++) + dri_bo_unreference(bo_gem->reloc_target_bo[i]); + free(bo_gem->reloc_target_bo); + free(bo_gem->relocs); + } + + DBG("bo_unreference final: %d (%s)\n", + bo_gem->gem_handle, bo_gem->name); + + bucket = dri_gem_bo_bucket_for_size(bufmgr_gem, bo->size); + /* Put the buffer into our internal cache for reuse if we can. */ + if (bucket != NULL && + (bucket->max_entries == -1 || + (bucket->max_entries > 0 && + bucket->num_entries < bucket->max_entries))) + { + bo_gem->name = 0; + bo_gem->validate_index = -1; + bo_gem->relocs = NULL; + bo_gem->reloc_target_bo = NULL; + bo_gem->reloc_count = 0; + + bo_gem->next = NULL; + *bucket->tail = bo_gem; + bucket->tail = &bo_gem->next; + bucket->num_entries++; + } else { + dri_gem_bo_free(bo); + } + + return; + } +} + +static int +dri_gem_bo_map(dri_bo *bo, int write_enable) +{ + dri_bufmgr_gem *bufmgr_gem; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + struct drm_gem_set_domain set_domain; + int ret; + + bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + + /* Allow recursive mapping. Mesa may recursively map buffers with + * nested display loops. + */ + if (!bo_gem->mapped) { + + assert(bo->virtual == NULL); + + DBG("bo_map: %d (%s)\n", bo_gem->gem_handle, bo_gem->name); + + if (bo_gem->virtual == NULL) { + struct drm_gem_mmap mmap_arg; + + memset(&mmap_arg, 0, sizeof(mmap_arg)); + mmap_arg.handle = bo_gem->gem_handle; + mmap_arg.offset = 0; + mmap_arg.size = bo->size; + ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_MMAP, &mmap_arg); + if (ret != 0) { + fprintf(stderr, "%s:%d: Error mapping buffer %d (%s): %s .\n", + __FILE__, __LINE__, + bo_gem->gem_handle, bo_gem->name, strerror(errno)); + } + bo_gem->virtual = (void *)(uintptr_t)mmap_arg.addr_ptr; + } + bo->virtual = bo_gem->virtual; + bo_gem->mapped = 1; + DBG("bo_map: %d (%s) -> %p\n", bo_gem->gem_handle, bo_gem->name, bo_gem->virtual); + } + + if (!bo_gem->cpu_domain_set) { + set_domain.handle = bo_gem->gem_handle; + set_domain.read_domains = DRM_GEM_DOMAIN_CPU; + set_domain.write_domain = write_enable ? DRM_GEM_DOMAIN_CPU : 0; + ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_SET_DOMAIN, &set_domain); + if (ret != 0) { + fprintf (stderr, "%s:%d: Error setting memory domains %d (%08x %08x): %s .\n", + __FILE__, __LINE__, + bo_gem->gem_handle, set_domain.read_domains, set_domain.write_domain, + strerror (errno)); + } + bo_gem->cpu_domain_set = 1; + } + + return 0; +} + +static int +dri_gem_bo_unmap(dri_bo *bo) +{ + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + + if (bo == NULL) + return 0; + + assert(bo_gem->mapped); + + return 0; +} + +static int +dri_gem_bo_subdata (dri_bo *bo, unsigned long offset, + unsigned long size, const void *data) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + struct drm_gem_pwrite pwrite; + int ret; + + memset (&pwrite, 0, sizeof (pwrite)); + pwrite.handle = bo_gem->gem_handle; + pwrite.offset = offset; + pwrite.size = size; + pwrite.data_ptr = (uint64_t) (uintptr_t) data; + ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_PWRITE, &pwrite); + if (ret != 0) { + fprintf (stderr, "%s:%d: Error writing data to buffer %d: (%d %d) %s .\n", + __FILE__, __LINE__, + bo_gem->gem_handle, (int) offset, (int) size, + strerror (errno)); + } + return 0; +} + +static int +dri_gem_bo_get_subdata (dri_bo *bo, unsigned long offset, + unsigned long size, void *data) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + struct drm_gem_pread pread; + int ret; + + memset (&pread, 0, sizeof (pread)); + pread.handle = bo_gem->gem_handle; + pread.offset = offset; + pread.size = size; + pread.data_ptr = (uint64_t) (uintptr_t) data; + ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_PREAD, &pread); + if (ret != 0) { + fprintf (stderr, "%s:%d: Error reading data from buffer %d: (%d %d) %s .\n", + __FILE__, __LINE__, + bo_gem->gem_handle, (int) offset, (int) size, + strerror (errno)); + } + return 0; +} + +static void +dri_gem_bo_wait_rendering(dri_bo *bo) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + struct drm_gem_set_domain set_domain; + int ret; + + set_domain.handle = bo_gem->gem_handle; + set_domain.read_domains = DRM_GEM_DOMAIN_CPU; + set_domain.write_domain = 0; + ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_SET_DOMAIN, &set_domain); + if (ret != 0) { + fprintf (stderr, "%s:%d: Error setting memory domains %d (%08x %08x): %s .\n", + __FILE__, __LINE__, + bo_gem->gem_handle, set_domain.read_domains, set_domain.write_domain, + strerror (errno)); + } +} + +static void +dri_bufmgr_gem_destroy(dri_bufmgr *bufmgr) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr; + int i; + + free(bufmgr_gem->exec_objects); + free(bufmgr_gem->exec_bos); + + /* Free any cached buffer objects we were going to reuse */ + for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++) { + struct dri_gem_bo_bucket *bucket = &bufmgr_gem->cache_bucket[i]; + dri_bo_gem *bo_gem; + + while ((bo_gem = bucket->head) != NULL) { + bucket->head = bo_gem->next; + if (bo_gem->next == NULL) + bucket->tail = &bucket->head; + bucket->num_entries--; + + dri_gem_bo_free(&bo_gem->bo); + } + } + + free(bufmgr); +} + +/** + * Adds the target buffer to the validation list and adds the relocation + * to the reloc_buffer's relocation list. + * + * The relocation entry at the given offset must already contain the + * precomputed relocation value, because the kernel will optimize out + * the relocation entry write when the buffer hasn't moved from the + * last known offset in target_bo. + */ +static int +dri_gem_emit_reloc(dri_bo *bo, uint32_t read_domains, uint32_t write_domain, + uint32_t delta, uint32_t offset, dri_bo *target_bo) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + dri_bo_gem *target_bo_gem = (dri_bo_gem *)target_bo; + + /* Create a new relocation list if needed */ + if (bo_gem->relocs == NULL) + intel_setup_reloc_list(bo); + + /* Check overflow */ + assert(bo_gem->reloc_count < bufmgr_gem->max_relocs); + + /* Check args */ + assert (offset <= bo->size - 4); + assert ((write_domain & (write_domain-1)) == 0); + + bo_gem->relocs[bo_gem->reloc_count].offset = offset; + bo_gem->relocs[bo_gem->reloc_count].delta = delta; + bo_gem->relocs[bo_gem->reloc_count].target_handle = + target_bo_gem->gem_handle; + bo_gem->relocs[bo_gem->reloc_count].read_domains = read_domains; + bo_gem->relocs[bo_gem->reloc_count].write_domain = write_domain; + bo_gem->relocs[bo_gem->reloc_count].presumed_offset = target_bo->offset; + + bo_gem->reloc_target_bo[bo_gem->reloc_count] = target_bo; + dri_bo_reference(target_bo); + + bo_gem->reloc_count++; + return 0; +} + +/** + * Walk the tree of relocations rooted at BO and accumulate the list of + * validations to be performed and update the relocation buffers with + * index values into the validation list. + */ +static void +dri_gem_bo_process_reloc(dri_bo *bo) +{ + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + int i; + + if (bo_gem->relocs == NULL) + return; + + for (i = 0; i < bo_gem->reloc_count; i++) { + dri_bo *target_bo = bo_gem->reloc_target_bo[i]; + + /* Continue walking the tree depth-first. */ + dri_gem_bo_process_reloc(target_bo); + + /* Add the target to the validate list */ + intel_add_validate_buffer(target_bo); + } +} + +static void * +dri_gem_process_reloc(dri_bo *batch_buf) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *) batch_buf->bufmgr; + + /* Update indices and set up the validate list. */ + dri_gem_bo_process_reloc(batch_buf); + + /* Add the batch buffer to the validation list. There are no relocations + * pointing to it. + */ + intel_add_validate_buffer(batch_buf); + + bufmgr_gem->exec_arg.buffers_ptr = (uintptr_t)bufmgr_gem->exec_objects; + bufmgr_gem->exec_arg.buffer_count = bufmgr_gem->exec_count; + bufmgr_gem->exec_arg.batch_start_offset = 0; + bufmgr_gem->exec_arg.batch_len = 0; /* written in intel_exec_ioctl */ + + return &bufmgr_gem->exec_arg; +} + +static void +intel_update_buffer_offsets (dri_bufmgr_gem *bufmgr_gem) +{ + int i; + + for (i = 0; i < bufmgr_gem->exec_count; i++) { + dri_bo *bo = bufmgr_gem->exec_bos[i]; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + + /* Update the buffer offset */ + if (bufmgr_gem->exec_objects[i].offset != bo->offset) { + DBG("BO %d (%s) migrated: 0x%08lx -> 0x%08llx\n", + bo_gem->gem_handle, bo_gem->name, bo->offset, + bufmgr_gem->exec_objects[i].offset); + bo->offset = bufmgr_gem->exec_objects[i].offset; + } + } +} + +static void +dri_gem_post_submit(dri_bo *batch_buf) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)batch_buf->bufmgr; + int i; + + intel_update_buffer_offsets (bufmgr_gem); + + if (bufmgr_gem->bufmgr.debug) + dri_gem_dump_validation_list(bufmgr_gem); + + for (i = 0; i < bufmgr_gem->exec_count; i++) { + dri_bo *bo = bufmgr_gem->exec_bos[i]; + dri_bo_gem *bo_gem = (dri_bo_gem *)bo; + + /* Need to call set_domain on next bo_map */ + bo_gem->cpu_domain_set = 0; + + /* Disconnect the buffer from the validate list */ + bo_gem->validate_index = -1; + dri_bo_unreference(bo); + bufmgr_gem->exec_bos[i] = NULL; + } + bufmgr_gem->exec_count = 0; +} + +/** + * Enables unlimited caching of buffer objects for reuse. + * + * This is potentially very memory expensive, as the cache at each bucket + * size is only bounded by how many buffers of that size we've managed to have + * in flight at once. + */ +void +intel_bufmgr_gem_enable_reuse(dri_bufmgr *bufmgr) +{ + dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr; + int i; + + for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++) { + bufmgr_gem->cache_bucket[i].max_entries = -1; + } +} + +/* + * + */ +static int +dri_gem_check_aperture_space(dri_bo *bo) +{ + return 0; +} + +/** + * Initializes the GEM buffer manager, which uses the kernel to allocate, map, + * and manage map buffer objections. + * + * \param fd File descriptor of the opened DRM device. + */ +dri_bufmgr * +intel_bufmgr_gem_init(int fd, int batch_size) +{ + dri_bufmgr_gem *bufmgr_gem; + int i; + + bufmgr_gem = calloc(1, sizeof(*bufmgr_gem)); + bufmgr_gem->fd = fd; + + /* Let's go with one relocation per every 2 dwords (but round down a bit + * since a power of two will mean an extra page allocation for the reloc + * buffer). + * + * Every 4 was too few for the blender benchmark. + */ + bufmgr_gem->max_relocs = batch_size / sizeof(uint32_t) / 2 - 2; + + bufmgr_gem->bufmgr.bo_alloc = dri_gem_bo_alloc; + bufmgr_gem->bufmgr.bo_reference = dri_gem_bo_reference; + bufmgr_gem->bufmgr.bo_unreference = dri_gem_bo_unreference; + bufmgr_gem->bufmgr.bo_map = dri_gem_bo_map; + bufmgr_gem->bufmgr.bo_unmap = dri_gem_bo_unmap; + bufmgr_gem->bufmgr.bo_subdata = dri_gem_bo_subdata; + bufmgr_gem->bufmgr.bo_get_subdata = dri_gem_bo_get_subdata; + bufmgr_gem->bufmgr.bo_wait_rendering = dri_gem_bo_wait_rendering; + bufmgr_gem->bufmgr.destroy = dri_bufmgr_gem_destroy; + bufmgr_gem->bufmgr.process_relocs = dri_gem_process_reloc; + bufmgr_gem->bufmgr.post_submit = dri_gem_post_submit; + bufmgr_gem->bufmgr.debug = 0; + bufmgr_gem->bufmgr.check_aperture_space = dri_gem_check_aperture_space; + bufmgr_gem->intel_bufmgr.emit_reloc = dri_gem_emit_reloc; + /* Initialize the linked lists for BO reuse cache. */ + for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++) + bufmgr_gem->cache_bucket[i].tail = &bufmgr_gem->cache_bucket[i].head; + + return &bufmgr_gem->bufmgr; +} + +int +intel_bo_emit_reloc(dri_bo *reloc_buf, + uint32_t read_domains, uint32_t write_domain, + uint32_t delta, uint32_t offset, dri_bo *target_buf) +{ + struct intel_bufmgr *intel_bufmgr; + + intel_bufmgr = (struct intel_bufmgr *)(reloc_buf->bufmgr + 1); + + return intel_bufmgr->emit_reloc(reloc_buf, read_domains, write_domain, + delta, offset, target_buf); +} diff --git a/libdrm/intel/mm.c b/libdrm/intel/mm.c new file mode 100644 index 00000000..2605d8ec --- /dev/null +++ b/libdrm/intel/mm.c @@ -0,0 +1,281 @@ +/* + * GLX Hardware Device Driver common code + * Copyright (C) 1999 Wittawat Yamwong + * + * 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 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 + * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS 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. + * + */ + +#include <stdlib.h> +#include <assert.h> + +#include "xf86drm.h" +#include "mm.h" + +void +drmmmDumpMemInfo(const struct mem_block *heap) +{ + drmMsg("Memory heap %p:\n", (void *)heap); + if (heap == 0) { + drmMsg(" heap == 0\n"); + } else { + const struct mem_block *p; + + for(p = heap->next; p != heap; p = p->next) { + drmMsg(" Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, + p->free ? 'F':'.', + p->reserved ? 'R':'.'); + } + + drmMsg("\nFree list:\n"); + + for(p = heap->next_free; p != heap; p = p->next_free) { + drmMsg(" FREE Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, + p->free ? 'F':'.', + p->reserved ? 'R':'.'); + } + + } + drmMsg("End of memory blocks\n"); +} + +struct mem_block * +drmmmInit(int ofs, int size) +{ + struct mem_block *heap, *block; + + if (size <= 0) + return NULL; + + heap = (struct mem_block *) calloc(1, sizeof(struct mem_block)); + if (!heap) + return NULL; + + block = (struct mem_block *) calloc(1, sizeof(struct mem_block)); + if (!block) { + free(heap); + return NULL; + } + + heap->next = block; + heap->prev = block; + heap->next_free = block; + heap->prev_free = block; + + block->heap = heap; + block->next = heap; + block->prev = heap; + block->next_free = heap; + block->prev_free = heap; + + block->ofs = ofs; + block->size = size; + block->free = 1; + + return heap; +} + + +static struct mem_block * +SliceBlock(struct mem_block *p, + int startofs, int size, + int reserved, int alignment) +{ + struct mem_block *newblock; + + /* break left [p, newblock, p->next], then p = newblock */ + if (startofs > p->ofs) { + newblock = (struct mem_block*) calloc(1, sizeof(struct mem_block)); + if (!newblock) + return NULL; + newblock->ofs = startofs; + newblock->size = p->size - (startofs - p->ofs); + newblock->free = 1; + newblock->heap = p->heap; + + newblock->next = p->next; + newblock->prev = p; + p->next->prev = newblock; + p->next = newblock; + + newblock->next_free = p->next_free; + newblock->prev_free = p; + p->next_free->prev_free = newblock; + p->next_free = newblock; + + p->size -= newblock->size; + p = newblock; + } + + /* break right, also [p, newblock, p->next] */ + if (size < p->size) { + newblock = (struct mem_block*) calloc(1, sizeof(struct mem_block)); + if (!newblock) + return NULL; + newblock->ofs = startofs + size; + newblock->size = p->size - size; + newblock->free = 1; + newblock->heap = p->heap; + + newblock->next = p->next; + newblock->prev = p; + p->next->prev = newblock; + p->next = newblock; + + newblock->next_free = p->next_free; + newblock->prev_free = p; + p->next_free->prev_free = newblock; + p->next_free = newblock; + + p->size = size; + } + + /* p = middle block */ + p->free = 0; + + /* Remove p from the free list: + */ + p->next_free->prev_free = p->prev_free; + p->prev_free->next_free = p->next_free; + + p->next_free = 0; + p->prev_free = 0; + + p->reserved = reserved; + return p; +} + + +struct mem_block * +drmmmAllocMem(struct mem_block *heap, int size, int align2, int startSearch) +{ + struct mem_block *p; + const int mask = (1 << align2)-1; + int startofs = 0; + int endofs; + + if (!heap || align2 < 0 || size <= 0) + return NULL; + + for (p = heap->next_free; p != heap; p = p->next_free) { + assert(p->free); + + startofs = (p->ofs + mask) & ~mask; + if ( startofs < startSearch ) { + startofs = startSearch; + } + endofs = startofs+size; + if (endofs <= (p->ofs+p->size)) + break; + } + + if (p == heap) + return NULL; + + assert(p->free); + p = SliceBlock(p,startofs,size,0,mask+1); + + return p; +} + + +struct mem_block * +drmmmFindBlock(struct mem_block *heap, int start) +{ + struct mem_block *p; + + for (p = heap->next; p != heap; p = p->next) { + if (p->ofs == start) + return p; + } + + return NULL; +} + + +static int +Join2Blocks(struct mem_block *p) +{ + /* XXX there should be some assertions here */ + + /* NOTE: heap->free == 0 */ + + if (p->free && p->next->free) { + struct mem_block *q = p->next; + + assert(p->ofs + p->size == q->ofs); + p->size += q->size; + + p->next = q->next; + q->next->prev = p; + + q->next_free->prev_free = q->prev_free; + q->prev_free->next_free = q->next_free; + + free(q); + return 1; + } + return 0; +} + +int +drmmmFreeMem(struct mem_block *b) +{ + if (!b) + return 0; + + if (b->free) { + drmMsg("block already free\n"); + return -1; + } + if (b->reserved) { + drmMsg("block is reserved\n"); + return -1; + } + + b->free = 1; + b->next_free = b->heap->next_free; + b->prev_free = b->heap; + b->next_free->prev_free = b; + b->prev_free->next_free = b; + + Join2Blocks(b); + if (b->prev != b->heap) + Join2Blocks(b->prev); + + return 0; +} + + +void +drmmmDestroy(struct mem_block *heap) +{ + struct mem_block *p; + + if (!heap) + return; + + for (p = heap->next; p != heap; ) { + struct mem_block *next = p->next; + free(p); + p = next; + } + + free(heap); +} diff --git a/libdrm/intel/mm.h b/libdrm/intel/mm.h new file mode 100644 index 00000000..965bb0cd --- /dev/null +++ b/libdrm/intel/mm.h @@ -0,0 +1,88 @@ +/* + * GLX Hardware Device Driver common code + * Copyright (C) 1999 Wittawat Yamwong + * + * 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 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 + * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS 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. + */ + + +/** + * Memory manager code. Primarily used by device drivers to manage texture + * heaps, etc. + */ + + +#ifndef MM_H +#define MM_H + +struct mem_block { + struct mem_block *next, *prev; + struct mem_block *next_free, *prev_free; + struct mem_block *heap; + int ofs,size; + unsigned int free:1; + unsigned int reserved:1; +}; + + + +/** + * input: total size in bytes + * return: a heap pointer if OK, NULL if error + */ +extern struct mem_block *drmmmInit(int ofs, int size); + +/** + * Allocate 'size' bytes with 2^align2 bytes alignment, + * restrict the search to free memory after 'startSearch' + * depth and back buffers should be in different 4mb banks + * to get better page hits if possible + * input: size = size of block + * align2 = 2^align2 bytes alignment + * startSearch = linear offset from start of heap to begin search + * return: pointer to the allocated block, 0 if error + */ +extern struct mem_block *drmmmAllocMem(struct mem_block *heap, int size, + int align2, int startSearch); + +/** + * Free block starts at offset + * input: pointer to a block + * return: 0 if OK, -1 if error + */ +extern int drmmmFreeMem(struct mem_block *b); + +/** + * Free block starts at offset + * input: pointer to a heap, start offset + * return: pointer to a block + */ +extern struct mem_block *drmmmFindBlock(struct mem_block *heap, int start); + +/** + * destroy MM + */ +extern void drmmmDestroy(struct mem_block *mmInit); + +/** + * For debuging purpose. + */ +extern void drmmmDumpMemInfo(const struct mem_block *mmInit); + +#endif diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c index 7b678138..e44706ed 100644 --- a/libdrm/xf86drm.c +++ b/libdrm/xf86drm.c @@ -113,7 +113,7 @@ static int drmDebugPrint(const char *format, va_list ap) static int (*drm_debug_print)(const char *format, va_list ap) = drmDebugPrint; -static void +void drmMsg(const char *format, ...) { va_list ap; diff --git a/libdrm/xf86drm.h b/libdrm/xf86drm.h index 35780aca..b29b3e5d 100644 --- a/libdrm/xf86drm.h +++ b/libdrm/xf86drm.h @@ -659,6 +659,7 @@ extern int drmSLLookupNeighbors(void *l, unsigned long key, extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened); extern void drmCloseOnce(int fd); +extern void drmMsg(const char *format, ...); extern int drmSetMaster(int fd); extern int drmDropMaster(int fd); diff --git a/libdrm/xf86mm.h b/libdrm/xf86mm.h index bb573407..a31de424 100644 --- a/libdrm/xf86mm.h +++ b/libdrm/xf86mm.h @@ -94,6 +94,18 @@ typedef struct _drmMMListHead #define DRMLISTENTRY(__type, __item, __field) \ ((__type *)(((char *) (__item)) - offsetof(__type, __field))) +#define DRMLISTEMPTY(__item) ((__item)->next == (__item)) + +#define DRMLISTFOREACHSAFE(__item, __temp, __list) \ + for ((__item) = (__list)->next, (__temp) = (__item)->next; \ + (__item) != (__list); \ + (__item) = (__temp), (__temp) = (__item)->next) + +#define DRMLISTFOREACHSAFEREVERSE(__item, __temp, __list) \ + for ((__item) = (__list)->prev, (__temp) = (__item)->prev; \ + (__item) != (__list); \ + (__item) = (__temp), (__temp) = (__item)->prev) + typedef struct _drmFence { unsigned handle; |