1 /* 2 * Copyright © 2012, 2013 Thierry Reding 3 * Copyright © 2013 Erik Faye-Lund 4 * Copyright © 2014 NVIDIA Corporation 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifdef HAVE_CONFIG_H 26 # include "config.h" 27 #endif 28 29 #include <errno.h> 30 #include <stdlib.h> 31 #include <string.h> 32 33 #include "util_math.h" 34 #include "private.h" 35 36 #define HOST1X_OPCODE_NONINCR(offset, count) \ 37 ((0x2 << 28) | (((offset) & 0xfff) << 16) | ((count) & 0xffff)) 38 39 static inline unsigned int 40 drm_tegra_pushbuf_get_offset(struct drm_tegra_pushbuf *pushbuf, uint32_t *ptr) 41 { 42 return ptr - pushbuf->start; 43 } 44 45 void drm_tegra_pushbuf_free(struct drm_tegra_pushbuf *pushbuf) 46 { 47 if (pushbuf->start) 48 free(pushbuf->start); 49 50 free(pushbuf); 51 } 52 53 /** 54 * drm_tegra_pushbuf_begin() - prepare push buffer for a series of pushes 55 * @pushbuf: push buffer 56 * @words: maximum number of words in series of pushes to follow 57 */ 58 drm_public int 59 drm_tegra_pushbuf_begin(struct drm_tegra_pushbuf *pushbuf, 60 unsigned int words, uint32_t **ptrp) 61 { 62 struct drm_tegra_job *job = pushbuf->job; 63 unsigned long offset; 64 size_t size; 65 void *ptr; 66 67 if (pushbuf->ptr + words >= pushbuf->end) { 68 words = pushbuf->end - pushbuf->start + words; 69 size = ALIGN(words * 4, job->page_size); 70 offset = pushbuf->ptr - pushbuf->start; 71 72 ptr = realloc(pushbuf->start, size); 73 if (!ptr) 74 return -ENOMEM; 75 76 pushbuf->start = ptr; 77 pushbuf->end = pushbuf->start + size / 4; 78 pushbuf->ptr = pushbuf->start + offset; 79 } 80 81 if (ptrp) 82 *ptrp = pushbuf->ptr; 83 84 return 0; 85 } 86 87 drm_public int 88 drm_tegra_pushbuf_end(struct drm_tegra_pushbuf *pushbuf, uint32_t *ptr) 89 { 90 struct drm_tegra_submit_cmd *command; 91 92 command = drm_tegra_job_add_command(pushbuf->job, 93 DRM_TEGRA_SUBMIT_CMD_GATHER_UPTR, 94 0); 95 if (!command) 96 return -ENOMEM; 97 98 command->gather_uptr.words = ptr - pushbuf->start; 99 pushbuf->ptr = ptr; 100 101 return 0; 102 } 103 104 drm_public int 105 drm_tegra_pushbuf_wait(struct drm_tegra_pushbuf *pushbuf, 106 struct drm_tegra_syncpoint *syncpt, 107 uint32_t value) 108 { 109 struct drm_tegra_submit_cmd *command; 110 111 command = drm_tegra_job_add_command(pushbuf->job, 112 DRM_TEGRA_SUBMIT_CMD_WAIT_SYNCPT, 113 0); 114 if (!command) 115 return -ENOMEM; 116 117 command->wait_syncpt.id = syncpt->id; 118 command->wait_syncpt.value = value; 119 120 return 0; 121 } 122 123 drm_public int 124 drm_tegra_pushbuf_relocate(struct drm_tegra_pushbuf *pushbuf, uint32_t **ptrp, 125 struct drm_tegra_mapping *target, 126 unsigned long offset, unsigned int shift, 127 uint32_t flags) 128 { 129 struct drm_tegra_submit_buf *buffers, *buffer; 130 struct drm_tegra_job *job = pushbuf->job; 131 size_t size; 132 133 size = (job->num_buffers + 1) * sizeof(*buffer); 134 135 buffers = realloc(job->buffers, size); 136 if (!buffers) 137 return -ENOMEM; 138 139 buffer = &buffers[job->num_buffers]; 140 141 memset(buffer, 0, sizeof(*buffer)); 142 buffer->mapping = target->id; 143 buffer->flags = flags; 144 buffer->reloc.target_offset = offset; 145 buffer->reloc.gather_offset_words = drm_tegra_pushbuf_get_offset(pushbuf, 146 *ptrp); 147 buffer->reloc.shift = shift; 148 149 *(*ptrp)++ = 0xdeadbeef; 150 151 job->buffers = buffers; 152 job->num_buffers++; 153 154 return 0; 155 } 156 157 drm_public int 158 drm_tegra_pushbuf_sync(struct drm_tegra_pushbuf *pushbuf, 159 struct drm_tegra_syncpoint *syncpt, 160 unsigned int count) 161 { 162 struct drm_tegra_job *job = pushbuf->job; 163 164 job->syncpt.increments += count; 165 job->syncpt.id = syncpt->id; 166 167 return 0; 168 } 169 170 drm_public int 171 drm_tegra_pushbuf_sync_cond(struct drm_tegra_pushbuf *pushbuf, uint32_t **ptrp, 172 struct drm_tegra_syncpoint *syncpt, 173 enum drm_tegra_sync_cond cond) 174 { 175 struct drm_tegra_channel *channel = pushbuf->job->channel; 176 177 if (cond >= DRM_TEGRA_SYNC_COND_MAX) 178 return -EINVAL; 179 180 *(*ptrp)++ = HOST1X_OPCODE_NONINCR(0x0, 0x1); 181 *(*ptrp)++ = cond << channel->cond_shift | syncpt->id; 182 183 return drm_tegra_pushbuf_sync(pushbuf, syncpt, 1); 184 } 185