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Rev | Author | Line No. | Line |
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2332 | Serge | 1 | /* |
2 | * Copyright © 2008-2010 Intel Corporation |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Software"), |
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6 | * to deal in the Software without restriction, including without limitation |
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7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, subject to the following conditions: |
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10 | * |
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11 | * The above copyright notice and this permission notice (including the next |
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12 | * paragraph) shall be included in all copies or substantial portions of the |
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13 | * Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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21 | * IN THE SOFTWARE. |
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22 | * |
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23 | * Authors: |
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24 | * Eric Anholt |
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25 | * Zou Nan hai |
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26 | * Xiang Hai hao |
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27 | * |
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28 | */ |
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29 | |||
6937 | serge | 30 | #include |
3031 | serge | 31 | #include |
2332 | Serge | 32 | #include "i915_drv.h" |
3031 | serge | 33 | #include |
2351 | Serge | 34 | #include "i915_trace.h" |
2332 | Serge | 35 | #include "intel_drv.h" |
36 | |||
5354 | serge | 37 | int __intel_ring_space(int head, int tail, int size) |
2332 | Serge | 38 | { |
6084 | serge | 39 | int space = head - tail; |
40 | if (space <= 0) |
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5060 | serge | 41 | space += size; |
6084 | serge | 42 | return space - I915_RING_FREE_SPACE; |
2332 | Serge | 43 | } |
44 | |||
6084 | serge | 45 | void intel_ring_update_space(struct intel_ringbuffer *ringbuf) |
46 | { |
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47 | if (ringbuf->last_retired_head != -1) { |
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48 | ringbuf->head = ringbuf->last_retired_head; |
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49 | ringbuf->last_retired_head = -1; |
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50 | } |
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51 | |||
52 | ringbuf->space = __intel_ring_space(ringbuf->head & HEAD_ADDR, |
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53 | ringbuf->tail, ringbuf->size); |
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54 | } |
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55 | |||
5354 | serge | 56 | int intel_ring_space(struct intel_ringbuffer *ringbuf) |
4560 | Serge | 57 | { |
6084 | serge | 58 | intel_ring_update_space(ringbuf); |
59 | return ringbuf->space; |
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5060 | serge | 60 | } |
61 | |||
5354 | serge | 62 | bool intel_ring_stopped(struct intel_engine_cs *ring) |
5060 | serge | 63 | { |
4560 | Serge | 64 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
5060 | serge | 65 | return dev_priv->gpu_error.stop_rings & intel_ring_flag(ring); |
66 | } |
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4560 | Serge | 67 | |
6084 | serge | 68 | static void __intel_ring_advance(struct intel_engine_cs *ring) |
5060 | serge | 69 | { |
70 | struct intel_ringbuffer *ringbuf = ring->buffer; |
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71 | ringbuf->tail &= ringbuf->size - 1; |
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72 | if (intel_ring_stopped(ring)) |
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4560 | Serge | 73 | return; |
5060 | serge | 74 | ring->write_tail(ring, ringbuf->tail); |
4560 | Serge | 75 | } |
76 | |||
3031 | serge | 77 | static int |
6084 | serge | 78 | gen2_render_ring_flush(struct drm_i915_gem_request *req, |
3031 | serge | 79 | u32 invalidate_domains, |
80 | u32 flush_domains) |
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2332 | Serge | 81 | { |
6084 | serge | 82 | struct intel_engine_cs *ring = req->ring; |
3031 | serge | 83 | u32 cmd; |
84 | int ret; |
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2332 | Serge | 85 | |
3031 | serge | 86 | cmd = MI_FLUSH; |
87 | if (((invalidate_domains|flush_domains) & I915_GEM_DOMAIN_RENDER) == 0) |
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88 | cmd |= MI_NO_WRITE_FLUSH; |
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2332 | Serge | 89 | |
3031 | serge | 90 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) |
91 | cmd |= MI_READ_FLUSH; |
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2332 | Serge | 92 | |
6084 | serge | 93 | ret = intel_ring_begin(req, 2); |
3031 | serge | 94 | if (ret) |
95 | return ret; |
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96 | |||
97 | intel_ring_emit(ring, cmd); |
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98 | intel_ring_emit(ring, MI_NOOP); |
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99 | intel_ring_advance(ring); |
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100 | |||
101 | return 0; |
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2332 | Serge | 102 | } |
103 | |||
104 | static int |
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6084 | serge | 105 | gen4_render_ring_flush(struct drm_i915_gem_request *req, |
106 | u32 invalidate_domains, |
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107 | u32 flush_domains) |
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2332 | Serge | 108 | { |
6084 | serge | 109 | struct intel_engine_cs *ring = req->ring; |
2332 | Serge | 110 | struct drm_device *dev = ring->dev; |
111 | u32 cmd; |
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112 | int ret; |
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113 | |||
114 | /* |
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115 | * read/write caches: |
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116 | * |
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117 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is |
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118 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is |
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119 | * also flushed at 2d versus 3d pipeline switches. |
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120 | * |
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121 | * read-only caches: |
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122 | * |
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123 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if |
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124 | * MI_READ_FLUSH is set, and is always flushed on 965. |
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125 | * |
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126 | * I915_GEM_DOMAIN_COMMAND may not exist? |
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127 | * |
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128 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is |
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129 | * invalidated when MI_EXE_FLUSH is set. |
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130 | * |
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131 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is |
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132 | * invalidated with every MI_FLUSH. |
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133 | * |
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134 | * TLBs: |
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135 | * |
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136 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND |
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137 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and |
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138 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER |
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139 | * are flushed at any MI_FLUSH. |
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140 | */ |
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141 | |||
142 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; |
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3031 | serge | 143 | if ((invalidate_domains|flush_domains) & I915_GEM_DOMAIN_RENDER) |
2332 | Serge | 144 | cmd &= ~MI_NO_WRITE_FLUSH; |
145 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) |
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146 | cmd |= MI_EXE_FLUSH; |
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147 | |||
148 | if (invalidate_domains & I915_GEM_DOMAIN_COMMAND && |
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149 | (IS_G4X(dev) || IS_GEN5(dev))) |
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150 | cmd |= MI_INVALIDATE_ISP; |
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151 | |||
6084 | serge | 152 | ret = intel_ring_begin(req, 2); |
2332 | Serge | 153 | if (ret) |
154 | return ret; |
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155 | |||
156 | intel_ring_emit(ring, cmd); |
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157 | intel_ring_emit(ring, MI_NOOP); |
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158 | intel_ring_advance(ring); |
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159 | |||
160 | return 0; |
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161 | } |
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162 | |||
2342 | Serge | 163 | /** |
164 | * Emits a PIPE_CONTROL with a non-zero post-sync operation, for |
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165 | * implementing two workarounds on gen6. From section 1.4.7.1 |
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166 | * "PIPE_CONTROL" of the Sandy Bridge PRM volume 2 part 1: |
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167 | * |
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168 | * [DevSNB-C+{W/A}] Before any depth stall flush (including those |
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169 | * produced by non-pipelined state commands), software needs to first |
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170 | * send a PIPE_CONTROL with no bits set except Post-Sync Operation != |
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171 | * 0. |
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172 | * |
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173 | * [Dev-SNB{W/A}]: Before a PIPE_CONTROL with Write Cache Flush Enable |
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174 | * =1, a PIPE_CONTROL with any non-zero post-sync-op is required. |
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175 | * |
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176 | * And the workaround for these two requires this workaround first: |
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177 | * |
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178 | * [Dev-SNB{W/A}]: Pipe-control with CS-stall bit set must be sent |
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179 | * BEFORE the pipe-control with a post-sync op and no write-cache |
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180 | * flushes. |
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181 | * |
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182 | * And this last workaround is tricky because of the requirements on |
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183 | * that bit. From section 1.4.7.2.3 "Stall" of the Sandy Bridge PRM |
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184 | * volume 2 part 1: |
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185 | * |
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186 | * "1 of the following must also be set: |
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187 | * - Render Target Cache Flush Enable ([12] of DW1) |
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188 | * - Depth Cache Flush Enable ([0] of DW1) |
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189 | * - Stall at Pixel Scoreboard ([1] of DW1) |
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190 | * - Depth Stall ([13] of DW1) |
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191 | * - Post-Sync Operation ([13] of DW1) |
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192 | * - Notify Enable ([8] of DW1)" |
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193 | * |
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194 | * The cache flushes require the workaround flush that triggered this |
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195 | * one, so we can't use it. Depth stall would trigger the same. |
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196 | * Post-sync nonzero is what triggered this second workaround, so we |
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197 | * can't use that one either. Notify enable is IRQs, which aren't |
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198 | * really our business. That leaves only stall at scoreboard. |
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199 | */ |
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200 | static int |
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6084 | serge | 201 | intel_emit_post_sync_nonzero_flush(struct drm_i915_gem_request *req) |
2342 | Serge | 202 | { |
6084 | serge | 203 | struct intel_engine_cs *ring = req->ring; |
5060 | serge | 204 | u32 scratch_addr = ring->scratch.gtt_offset + 2 * CACHELINE_BYTES; |
2342 | Serge | 205 | int ret; |
206 | |||
6084 | serge | 207 | ret = intel_ring_begin(req, 6); |
2342 | Serge | 208 | if (ret) |
209 | return ret; |
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210 | |||
211 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(5)); |
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212 | intel_ring_emit(ring, PIPE_CONTROL_CS_STALL | |
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213 | PIPE_CONTROL_STALL_AT_SCOREBOARD); |
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214 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); /* address */ |
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215 | intel_ring_emit(ring, 0); /* low dword */ |
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216 | intel_ring_emit(ring, 0); /* high dword */ |
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217 | intel_ring_emit(ring, MI_NOOP); |
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218 | intel_ring_advance(ring); |
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219 | |||
6084 | serge | 220 | ret = intel_ring_begin(req, 6); |
2342 | Serge | 221 | if (ret) |
222 | return ret; |
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223 | |||
224 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(5)); |
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225 | intel_ring_emit(ring, PIPE_CONTROL_QW_WRITE); |
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226 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); /* address */ |
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227 | intel_ring_emit(ring, 0); |
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228 | intel_ring_emit(ring, 0); |
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229 | intel_ring_emit(ring, MI_NOOP); |
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230 | intel_ring_advance(ring); |
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231 | |||
232 | return 0; |
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233 | } |
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234 | |||
235 | static int |
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6084 | serge | 236 | gen6_render_ring_flush(struct drm_i915_gem_request *req, |
237 | u32 invalidate_domains, u32 flush_domains) |
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2342 | Serge | 238 | { |
6084 | serge | 239 | struct intel_engine_cs *ring = req->ring; |
2342 | Serge | 240 | u32 flags = 0; |
5060 | serge | 241 | u32 scratch_addr = ring->scratch.gtt_offset + 2 * CACHELINE_BYTES; |
2342 | Serge | 242 | int ret; |
243 | |||
244 | /* Force SNB workarounds for PIPE_CONTROL flushes */ |
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6084 | serge | 245 | ret = intel_emit_post_sync_nonzero_flush(req); |
3031 | serge | 246 | if (ret) |
247 | return ret; |
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2342 | Serge | 248 | |
249 | /* Just flush everything. Experiments have shown that reducing the |
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250 | * number of bits based on the write domains has little performance |
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251 | * impact. |
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252 | */ |
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3031 | serge | 253 | if (flush_domains) { |
254 | flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; |
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255 | flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; |
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256 | /* |
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257 | * Ensure that any following seqno writes only happen |
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258 | * when the render cache is indeed flushed. |
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259 | */ |
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260 | flags |= PIPE_CONTROL_CS_STALL; |
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261 | } |
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262 | if (invalidate_domains) { |
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263 | flags |= PIPE_CONTROL_TLB_INVALIDATE; |
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264 | flags |= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE; |
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265 | flags |= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE; |
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266 | flags |= PIPE_CONTROL_VF_CACHE_INVALIDATE; |
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267 | flags |= PIPE_CONTROL_CONST_CACHE_INVALIDATE; |
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268 | flags |= PIPE_CONTROL_STATE_CACHE_INVALIDATE; |
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269 | /* |
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270 | * TLB invalidate requires a post-sync write. |
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271 | */ |
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3243 | Serge | 272 | flags |= PIPE_CONTROL_QW_WRITE | PIPE_CONTROL_CS_STALL; |
3031 | serge | 273 | } |
274 | |||
6084 | serge | 275 | ret = intel_ring_begin(req, 4); |
3031 | serge | 276 | if (ret) |
277 | return ret; |
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278 | |||
279 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4)); |
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280 | intel_ring_emit(ring, flags); |
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281 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); |
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282 | intel_ring_emit(ring, 0); |
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283 | intel_ring_advance(ring); |
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284 | |||
285 | return 0; |
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286 | } |
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287 | |||
288 | static int |
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6084 | serge | 289 | gen7_render_ring_cs_stall_wa(struct drm_i915_gem_request *req) |
3031 | serge | 290 | { |
6084 | serge | 291 | struct intel_engine_cs *ring = req->ring; |
3031 | serge | 292 | int ret; |
293 | |||
6084 | serge | 294 | ret = intel_ring_begin(req, 4); |
3031 | serge | 295 | if (ret) |
296 | return ret; |
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297 | |||
298 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4)); |
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299 | intel_ring_emit(ring, PIPE_CONTROL_CS_STALL | |
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300 | PIPE_CONTROL_STALL_AT_SCOREBOARD); |
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301 | intel_ring_emit(ring, 0); |
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302 | intel_ring_emit(ring, 0); |
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303 | intel_ring_advance(ring); |
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304 | |||
305 | return 0; |
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306 | } |
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307 | |||
308 | static int |
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6084 | serge | 309 | gen7_render_ring_flush(struct drm_i915_gem_request *req, |
3031 | serge | 310 | u32 invalidate_domains, u32 flush_domains) |
311 | { |
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6084 | serge | 312 | struct intel_engine_cs *ring = req->ring; |
3031 | serge | 313 | u32 flags = 0; |
5060 | serge | 314 | u32 scratch_addr = ring->scratch.gtt_offset + 2 * CACHELINE_BYTES; |
3031 | serge | 315 | int ret; |
316 | |||
317 | /* |
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318 | * Ensure that any following seqno writes only happen when the render |
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319 | * cache is indeed flushed. |
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320 | * |
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321 | * Workaround: 4th PIPE_CONTROL command (except the ones with only |
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322 | * read-cache invalidate bits set) must have the CS_STALL bit set. We |
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323 | * don't try to be clever and just set it unconditionally. |
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324 | */ |
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325 | flags |= PIPE_CONTROL_CS_STALL; |
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326 | |||
327 | /* Just flush everything. Experiments have shown that reducing the |
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328 | * number of bits based on the write domains has little performance |
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329 | * impact. |
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330 | */ |
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331 | if (flush_domains) { |
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6084 | serge | 332 | flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; |
3031 | serge | 333 | flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; |
6320 | serge | 334 | flags |= PIPE_CONTROL_DC_FLUSH_ENABLE; |
6084 | serge | 335 | flags |= PIPE_CONTROL_FLUSH_ENABLE; |
3031 | serge | 336 | } |
337 | if (invalidate_domains) { |
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338 | flags |= PIPE_CONTROL_TLB_INVALIDATE; |
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6084 | serge | 339 | flags |= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE; |
340 | flags |= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE; |
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341 | flags |= PIPE_CONTROL_VF_CACHE_INVALIDATE; |
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342 | flags |= PIPE_CONTROL_CONST_CACHE_INVALIDATE; |
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343 | flags |= PIPE_CONTROL_STATE_CACHE_INVALIDATE; |
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5354 | serge | 344 | flags |= PIPE_CONTROL_MEDIA_STATE_CLEAR; |
3031 | serge | 345 | /* |
346 | * TLB invalidate requires a post-sync write. |
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347 | */ |
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348 | flags |= PIPE_CONTROL_QW_WRITE; |
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3480 | Serge | 349 | flags |= PIPE_CONTROL_GLOBAL_GTT_IVB; |
2342 | Serge | 350 | |
5354 | serge | 351 | flags |= PIPE_CONTROL_STALL_AT_SCOREBOARD; |
352 | |||
3031 | serge | 353 | /* Workaround: we must issue a pipe_control with CS-stall bit |
354 | * set before a pipe_control command that has the state cache |
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355 | * invalidate bit set. */ |
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6084 | serge | 356 | gen7_render_ring_cs_stall_wa(req); |
3031 | serge | 357 | } |
358 | |||
6084 | serge | 359 | ret = intel_ring_begin(req, 4); |
2342 | Serge | 360 | if (ret) |
361 | return ret; |
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362 | |||
3031 | serge | 363 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4)); |
2342 | Serge | 364 | intel_ring_emit(ring, flags); |
3480 | Serge | 365 | intel_ring_emit(ring, scratch_addr); |
3031 | serge | 366 | intel_ring_emit(ring, 0); |
2342 | Serge | 367 | intel_ring_advance(ring); |
368 | |||
369 | return 0; |
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370 | } |
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371 | |||
4560 | Serge | 372 | static int |
6084 | serge | 373 | gen8_emit_pipe_control(struct drm_i915_gem_request *req, |
5060 | serge | 374 | u32 flags, u32 scratch_addr) |
375 | { |
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6084 | serge | 376 | struct intel_engine_cs *ring = req->ring; |
5060 | serge | 377 | int ret; |
378 | |||
6084 | serge | 379 | ret = intel_ring_begin(req, 6); |
5060 | serge | 380 | if (ret) |
381 | return ret; |
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382 | |||
383 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(6)); |
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384 | intel_ring_emit(ring, flags); |
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385 | intel_ring_emit(ring, scratch_addr); |
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386 | intel_ring_emit(ring, 0); |
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387 | intel_ring_emit(ring, 0); |
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388 | intel_ring_emit(ring, 0); |
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389 | intel_ring_advance(ring); |
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390 | |||
391 | return 0; |
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392 | } |
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393 | |||
394 | static int |
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6084 | serge | 395 | gen8_render_ring_flush(struct drm_i915_gem_request *req, |
4560 | Serge | 396 | u32 invalidate_domains, u32 flush_domains) |
397 | { |
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398 | u32 flags = 0; |
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6084 | serge | 399 | u32 scratch_addr = req->ring->scratch.gtt_offset + 2 * CACHELINE_BYTES; |
4560 | Serge | 400 | int ret; |
401 | |||
402 | flags |= PIPE_CONTROL_CS_STALL; |
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403 | |||
404 | if (flush_domains) { |
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405 | flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; |
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406 | flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; |
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6320 | serge | 407 | flags |= PIPE_CONTROL_DC_FLUSH_ENABLE; |
6084 | serge | 408 | flags |= PIPE_CONTROL_FLUSH_ENABLE; |
4560 | Serge | 409 | } |
410 | if (invalidate_domains) { |
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411 | flags |= PIPE_CONTROL_TLB_INVALIDATE; |
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412 | flags |= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE; |
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413 | flags |= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE; |
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414 | flags |= PIPE_CONTROL_VF_CACHE_INVALIDATE; |
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415 | flags |= PIPE_CONTROL_CONST_CACHE_INVALIDATE; |
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416 | flags |= PIPE_CONTROL_STATE_CACHE_INVALIDATE; |
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417 | flags |= PIPE_CONTROL_QW_WRITE; |
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418 | flags |= PIPE_CONTROL_GLOBAL_GTT_IVB; |
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419 | |||
5060 | serge | 420 | /* WaCsStallBeforeStateCacheInvalidate:bdw,chv */ |
6084 | serge | 421 | ret = gen8_emit_pipe_control(req, |
5060 | serge | 422 | PIPE_CONTROL_CS_STALL | |
423 | PIPE_CONTROL_STALL_AT_SCOREBOARD, |
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424 | 0); |
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6084 | serge | 425 | if (ret) |
426 | return ret; |
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5060 | serge | 427 | } |
4560 | Serge | 428 | |
6084 | serge | 429 | return gen8_emit_pipe_control(req, flags, scratch_addr); |
4560 | Serge | 430 | } |
431 | |||
5060 | serge | 432 | static void ring_write_tail(struct intel_engine_cs *ring, |
2332 | Serge | 433 | u32 value) |
434 | { |
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5060 | serge | 435 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
2332 | Serge | 436 | I915_WRITE_TAIL(ring, value); |
437 | } |
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438 | |||
5060 | serge | 439 | u64 intel_ring_get_active_head(struct intel_engine_cs *ring) |
2332 | Serge | 440 | { |
5060 | serge | 441 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
442 | u64 acthd; |
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2332 | Serge | 443 | |
5060 | serge | 444 | if (INTEL_INFO(ring->dev)->gen >= 8) |
445 | acthd = I915_READ64_2x32(RING_ACTHD(ring->mmio_base), |
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446 | RING_ACTHD_UDW(ring->mmio_base)); |
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447 | else if (INTEL_INFO(ring->dev)->gen >= 4) |
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448 | acthd = I915_READ(RING_ACTHD(ring->mmio_base)); |
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449 | else |
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450 | acthd = I915_READ(ACTHD); |
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451 | |||
452 | return acthd; |
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2332 | Serge | 453 | } |
454 | |||
5060 | serge | 455 | static void ring_setup_phys_status_page(struct intel_engine_cs *ring) |
4104 | Serge | 456 | { |
457 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
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458 | u32 addr; |
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459 | |||
460 | addr = dev_priv->status_page_dmah->busaddr; |
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461 | if (INTEL_INFO(ring->dev)->gen >= 4) |
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462 | addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0; |
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463 | I915_WRITE(HWS_PGA, addr); |
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464 | } |
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465 | |||
6084 | serge | 466 | static void intel_ring_setup_status_page(struct intel_engine_cs *ring) |
467 | { |
||
468 | struct drm_device *dev = ring->dev; |
||
469 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
||
6937 | serge | 470 | i915_reg_t mmio; |
6084 | serge | 471 | |
472 | /* The ring status page addresses are no longer next to the rest of |
||
473 | * the ring registers as of gen7. |
||
474 | */ |
||
475 | if (IS_GEN7(dev)) { |
||
476 | switch (ring->id) { |
||
477 | case RCS: |
||
478 | mmio = RENDER_HWS_PGA_GEN7; |
||
479 | break; |
||
480 | case BCS: |
||
481 | mmio = BLT_HWS_PGA_GEN7; |
||
482 | break; |
||
483 | /* |
||
484 | * VCS2 actually doesn't exist on Gen7. Only shut up |
||
485 | * gcc switch check warning |
||
486 | */ |
||
487 | case VCS2: |
||
488 | case VCS: |
||
489 | mmio = BSD_HWS_PGA_GEN7; |
||
490 | break; |
||
491 | case VECS: |
||
492 | mmio = VEBOX_HWS_PGA_GEN7; |
||
493 | break; |
||
494 | } |
||
495 | } else if (IS_GEN6(ring->dev)) { |
||
496 | mmio = RING_HWS_PGA_GEN6(ring->mmio_base); |
||
497 | } else { |
||
498 | /* XXX: gen8 returns to sanity */ |
||
499 | mmio = RING_HWS_PGA(ring->mmio_base); |
||
500 | } |
||
501 | |||
502 | I915_WRITE(mmio, (u32)ring->status_page.gfx_addr); |
||
503 | POSTING_READ(mmio); |
||
504 | |||
505 | /* |
||
506 | * Flush the TLB for this page |
||
507 | * |
||
508 | * FIXME: These two bits have disappeared on gen8, so a question |
||
509 | * arises: do we still need this and if so how should we go about |
||
510 | * invalidating the TLB? |
||
511 | */ |
||
512 | if (INTEL_INFO(dev)->gen >= 6 && INTEL_INFO(dev)->gen < 8) { |
||
6937 | serge | 513 | i915_reg_t reg = RING_INSTPM(ring->mmio_base); |
6084 | serge | 514 | |
515 | /* ring should be idle before issuing a sync flush*/ |
||
516 | WARN_ON((I915_READ_MODE(ring) & MODE_IDLE) == 0); |
||
517 | |||
518 | I915_WRITE(reg, |
||
519 | _MASKED_BIT_ENABLE(INSTPM_TLB_INVALIDATE | |
||
520 | INSTPM_SYNC_FLUSH)); |
||
521 | if (wait_for((I915_READ(reg) & INSTPM_SYNC_FLUSH) == 0, |
||
522 | 1000)) |
||
523 | DRM_ERROR("%s: wait for SyncFlush to complete for TLB invalidation timed out\n", |
||
524 | ring->name); |
||
525 | } |
||
526 | } |
||
527 | |||
5060 | serge | 528 | static bool stop_ring(struct intel_engine_cs *ring) |
2332 | Serge | 529 | { |
5060 | serge | 530 | struct drm_i915_private *dev_priv = to_i915(ring->dev); |
2332 | Serge | 531 | |
5060 | serge | 532 | if (!IS_GEN2(ring->dev)) { |
533 | I915_WRITE_MODE(ring, _MASKED_BIT_ENABLE(STOP_RING)); |
||
5354 | serge | 534 | if (wait_for((I915_READ_MODE(ring) & MODE_IDLE) != 0, 1000)) { |
535 | DRM_ERROR("%s : timed out trying to stop ring\n", ring->name); |
||
536 | /* Sometimes we observe that the idle flag is not |
||
537 | * set even though the ring is empty. So double |
||
538 | * check before giving up. |
||
539 | */ |
||
540 | if (I915_READ_HEAD(ring) != I915_READ_TAIL(ring)) |
||
6084 | serge | 541 | return false; |
5060 | serge | 542 | } |
543 | } |
||
3031 | serge | 544 | |
2332 | Serge | 545 | I915_WRITE_CTL(ring, 0); |
546 | I915_WRITE_HEAD(ring, 0); |
||
547 | ring->write_tail(ring, 0); |
||
548 | |||
5060 | serge | 549 | if (!IS_GEN2(ring->dev)) { |
550 | (void)I915_READ_CTL(ring); |
||
551 | I915_WRITE_MODE(ring, _MASKED_BIT_DISABLE(STOP_RING)); |
||
552 | } |
||
2332 | Serge | 553 | |
5060 | serge | 554 | return (I915_READ_HEAD(ring) & HEAD_ADDR) == 0; |
555 | } |
||
556 | |||
557 | static int init_ring_common(struct intel_engine_cs *ring) |
||
558 | { |
||
559 | struct drm_device *dev = ring->dev; |
||
560 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
561 | struct intel_ringbuffer *ringbuf = ring->buffer; |
||
562 | struct drm_i915_gem_object *obj = ringbuf->obj; |
||
563 | int ret = 0; |
||
564 | |||
6084 | serge | 565 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
5060 | serge | 566 | |
567 | if (!stop_ring(ring)) { |
||
568 | /* G45 ring initialization often fails to reset head to zero */ |
||
2332 | Serge | 569 | DRM_DEBUG_KMS("%s head not reset to zero " |
570 | "ctl %08x head %08x tail %08x start %08x\n", |
||
571 | ring->name, |
||
572 | I915_READ_CTL(ring), |
||
573 | I915_READ_HEAD(ring), |
||
574 | I915_READ_TAIL(ring), |
||
575 | I915_READ_START(ring)); |
||
576 | |||
5060 | serge | 577 | if (!stop_ring(ring)) { |
2332 | Serge | 578 | DRM_ERROR("failed to set %s head to zero " |
579 | "ctl %08x head %08x tail %08x start %08x\n", |
||
580 | ring->name, |
||
581 | I915_READ_CTL(ring), |
||
582 | I915_READ_HEAD(ring), |
||
583 | I915_READ_TAIL(ring), |
||
584 | I915_READ_START(ring)); |
||
5060 | serge | 585 | ret = -EIO; |
586 | goto out; |
||
2332 | Serge | 587 | } |
588 | } |
||
589 | |||
5060 | serge | 590 | if (I915_NEED_GFX_HWS(dev)) |
591 | intel_ring_setup_status_page(ring); |
||
592 | else |
||
593 | ring_setup_phys_status_page(ring); |
||
594 | |||
595 | /* Enforce ordering by reading HEAD register back */ |
||
596 | I915_READ_HEAD(ring); |
||
597 | |||
3031 | serge | 598 | /* Initialize the ring. This must happen _after_ we've cleared the ring |
599 | * registers with the above sequence (the readback of the HEAD registers |
||
600 | * also enforces ordering), otherwise the hw might lose the new ring |
||
601 | * register values. */ |
||
4104 | Serge | 602 | I915_WRITE_START(ring, i915_gem_obj_ggtt_offset(obj)); |
5354 | serge | 603 | |
604 | /* WaClearRingBufHeadRegAtInit:ctg,elk */ |
||
605 | if (I915_READ_HEAD(ring)) |
||
606 | DRM_DEBUG("%s initialization failed [head=%08x], fudging\n", |
||
607 | ring->name, I915_READ_HEAD(ring)); |
||
608 | I915_WRITE_HEAD(ring, 0); |
||
609 | (void)I915_READ_HEAD(ring); |
||
610 | |||
2332 | Serge | 611 | I915_WRITE_CTL(ring, |
5060 | serge | 612 | ((ringbuf->size - PAGE_SIZE) & RING_NR_PAGES) |
3031 | serge | 613 | | RING_VALID); |
2332 | Serge | 614 | |
615 | /* If the head is still not zero, the ring is dead */ |
||
3031 | serge | 616 | if (wait_for((I915_READ_CTL(ring) & RING_VALID) != 0 && |
4104 | Serge | 617 | I915_READ_START(ring) == i915_gem_obj_ggtt_offset(obj) && |
3031 | serge | 618 | (I915_READ_HEAD(ring) & HEAD_ADDR) == 0, 50)) { |
2332 | Serge | 619 | DRM_ERROR("%s initialization failed " |
5060 | serge | 620 | "ctl %08x (valid? %d) head %08x tail %08x start %08x [expected %08lx]\n", |
6084 | serge | 621 | ring->name, |
5060 | serge | 622 | I915_READ_CTL(ring), I915_READ_CTL(ring) & RING_VALID, |
623 | I915_READ_HEAD(ring), I915_READ_TAIL(ring), |
||
624 | I915_READ_START(ring), (unsigned long)i915_gem_obj_ggtt_offset(obj)); |
||
3031 | serge | 625 | ret = -EIO; |
626 | goto out; |
||
2332 | Serge | 627 | } |
628 | |||
6084 | serge | 629 | ringbuf->last_retired_head = -1; |
630 | ringbuf->head = I915_READ_HEAD(ring); |
||
631 | ringbuf->tail = I915_READ_TAIL(ring) & TAIL_ADDR; |
||
632 | intel_ring_update_space(ringbuf); |
||
5060 | serge | 633 | |
4104 | Serge | 634 | memset(&ring->hangcheck, 0, sizeof(ring->hangcheck)); |
635 | |||
3031 | serge | 636 | out: |
6084 | serge | 637 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
2332 | Serge | 638 | |
3031 | serge | 639 | return ret; |
2332 | Serge | 640 | } |
641 | |||
5354 | serge | 642 | void |
643 | intel_fini_pipe_control(struct intel_engine_cs *ring) |
||
2332 | Serge | 644 | { |
5354 | serge | 645 | struct drm_device *dev = ring->dev; |
646 | |||
647 | if (ring->scratch.obj == NULL) |
||
648 | return; |
||
649 | |||
650 | if (INTEL_INFO(dev)->gen >= 5) { |
||
651 | kunmap(sg_page(ring->scratch.obj->pages->sgl)); |
||
652 | i915_gem_object_ggtt_unpin(ring->scratch.obj); |
||
653 | } |
||
654 | |||
655 | drm_gem_object_unreference(&ring->scratch.obj->base); |
||
656 | ring->scratch.obj = NULL; |
||
657 | } |
||
658 | |||
659 | int |
||
660 | intel_init_pipe_control(struct intel_engine_cs *ring) |
||
661 | { |
||
2332 | Serge | 662 | int ret; |
663 | |||
6084 | serge | 664 | WARN_ON(ring->scratch.obj); |
2332 | Serge | 665 | |
4104 | Serge | 666 | ring->scratch.obj = i915_gem_alloc_object(ring->dev, 4096); |
667 | if (ring->scratch.obj == NULL) { |
||
2332 | Serge | 668 | DRM_ERROR("Failed to allocate seqno page\n"); |
669 | ret = -ENOMEM; |
||
670 | goto err; |
||
671 | } |
||
672 | |||
5060 | serge | 673 | ret = i915_gem_object_set_cache_level(ring->scratch.obj, I915_CACHE_LLC); |
674 | if (ret) |
||
675 | goto err_unref; |
||
2332 | Serge | 676 | |
5060 | serge | 677 | ret = i915_gem_obj_ggtt_pin(ring->scratch.obj, 4096, 0); |
2332 | Serge | 678 | if (ret) |
679 | goto err_unref; |
||
680 | |||
4104 | Serge | 681 | ring->scratch.gtt_offset = i915_gem_obj_ggtt_offset(ring->scratch.obj); |
5354 | serge | 682 | ring->scratch.cpu_page = kmap(sg_page(ring->scratch.obj->pages->sgl)); |
4104 | Serge | 683 | if (ring->scratch.cpu_page == NULL) { |
684 | ret = -ENOMEM; |
||
2332 | Serge | 685 | goto err_unpin; |
4104 | Serge | 686 | } |
2332 | Serge | 687 | |
3480 | Serge | 688 | DRM_DEBUG_DRIVER("%s pipe control offset: 0x%08x\n", |
4104 | Serge | 689 | ring->name, ring->scratch.gtt_offset); |
2332 | Serge | 690 | return 0; |
691 | |||
692 | err_unpin: |
||
5060 | serge | 693 | i915_gem_object_ggtt_unpin(ring->scratch.obj); |
2332 | Serge | 694 | err_unref: |
4104 | Serge | 695 | drm_gem_object_unreference(&ring->scratch.obj->base); |
2332 | Serge | 696 | err: |
697 | return ret; |
||
698 | } |
||
699 | |||
6084 | serge | 700 | static int intel_ring_workarounds_emit(struct drm_i915_gem_request *req) |
5354 | serge | 701 | { |
702 | int ret, i; |
||
6084 | serge | 703 | struct intel_engine_cs *ring = req->ring; |
5354 | serge | 704 | struct drm_device *dev = ring->dev; |
705 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
706 | struct i915_workarounds *w = &dev_priv->workarounds; |
||
707 | |||
6084 | serge | 708 | if (w->count == 0) |
5354 | serge | 709 | return 0; |
710 | |||
711 | ring->gpu_caches_dirty = true; |
||
6084 | serge | 712 | ret = intel_ring_flush_all_caches(req); |
5354 | serge | 713 | if (ret) |
714 | return ret; |
||
715 | |||
6084 | serge | 716 | ret = intel_ring_begin(req, (w->count * 2 + 2)); |
5354 | serge | 717 | if (ret) |
718 | return ret; |
||
719 | |||
720 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(w->count)); |
||
721 | for (i = 0; i < w->count; i++) { |
||
6937 | serge | 722 | intel_ring_emit_reg(ring, w->reg[i].addr); |
5354 | serge | 723 | intel_ring_emit(ring, w->reg[i].value); |
724 | } |
||
725 | intel_ring_emit(ring, MI_NOOP); |
||
726 | |||
727 | intel_ring_advance(ring); |
||
728 | |||
729 | ring->gpu_caches_dirty = true; |
||
6084 | serge | 730 | ret = intel_ring_flush_all_caches(req); |
5354 | serge | 731 | if (ret) |
732 | return ret; |
||
733 | |||
734 | DRM_DEBUG_DRIVER("Number of Workarounds emitted: %d\n", w->count); |
||
735 | |||
736 | return 0; |
||
737 | } |
||
738 | |||
6084 | serge | 739 | static int intel_rcs_ctx_init(struct drm_i915_gem_request *req) |
740 | { |
||
741 | int ret; |
||
742 | |||
743 | ret = intel_ring_workarounds_emit(req); |
||
744 | if (ret != 0) |
||
745 | return ret; |
||
746 | |||
747 | ret = i915_gem_render_state_init(req); |
||
748 | if (ret) |
||
7144 | serge | 749 | return ret; |
6084 | serge | 750 | |
7144 | serge | 751 | return 0; |
6084 | serge | 752 | } |
753 | |||
5354 | serge | 754 | static int wa_add(struct drm_i915_private *dev_priv, |
6937 | serge | 755 | i915_reg_t addr, |
756 | const u32 mask, const u32 val) |
||
5354 | serge | 757 | { |
758 | const u32 idx = dev_priv->workarounds.count; |
||
759 | |||
760 | if (WARN_ON(idx >= I915_MAX_WA_REGS)) |
||
761 | return -ENOSPC; |
||
762 | |||
763 | dev_priv->workarounds.reg[idx].addr = addr; |
||
764 | dev_priv->workarounds.reg[idx].value = val; |
||
765 | dev_priv->workarounds.reg[idx].mask = mask; |
||
766 | |||
767 | dev_priv->workarounds.count++; |
||
768 | |||
769 | return 0; |
||
770 | } |
||
771 | |||
6084 | serge | 772 | #define WA_REG(addr, mask, val) do { \ |
5354 | serge | 773 | const int r = wa_add(dev_priv, (addr), (mask), (val)); \ |
774 | if (r) \ |
||
775 | return r; \ |
||
6084 | serge | 776 | } while (0) |
5354 | serge | 777 | |
778 | #define WA_SET_BIT_MASKED(addr, mask) \ |
||
779 | WA_REG(addr, (mask), _MASKED_BIT_ENABLE(mask)) |
||
780 | |||
781 | #define WA_CLR_BIT_MASKED(addr, mask) \ |
||
782 | WA_REG(addr, (mask), _MASKED_BIT_DISABLE(mask)) |
||
783 | |||
784 | #define WA_SET_FIELD_MASKED(addr, mask, value) \ |
||
785 | WA_REG(addr, mask, _MASKED_FIELD(mask, value)) |
||
786 | |||
787 | #define WA_SET_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) | (mask)) |
||
788 | #define WA_CLR_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) & ~(mask)) |
||
789 | |||
790 | #define WA_WRITE(addr, val) WA_REG(addr, 0xffffffff, val) |
||
791 | |||
7144 | serge | 792 | static int wa_ring_whitelist_reg(struct intel_engine_cs *ring, i915_reg_t reg) |
793 | { |
||
794 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
||
795 | struct i915_workarounds *wa = &dev_priv->workarounds; |
||
796 | const uint32_t index = wa->hw_whitelist_count[ring->id]; |
||
797 | |||
798 | if (WARN_ON(index >= RING_MAX_NONPRIV_SLOTS)) |
||
799 | return -EINVAL; |
||
800 | |||
801 | WA_WRITE(RING_FORCE_TO_NONPRIV(ring->mmio_base, index), |
||
802 | i915_mmio_reg_offset(reg)); |
||
803 | wa->hw_whitelist_count[ring->id]++; |
||
804 | |||
805 | return 0; |
||
806 | } |
||
807 | |||
6084 | serge | 808 | static int gen8_init_workarounds(struct intel_engine_cs *ring) |
5354 | serge | 809 | { |
810 | struct drm_device *dev = ring->dev; |
||
811 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
812 | |||
6084 | serge | 813 | WA_SET_BIT_MASKED(INSTPM, INSTPM_FORCE_ORDERING); |
5354 | serge | 814 | |
6084 | serge | 815 | /* WaDisableAsyncFlipPerfMode:bdw,chv */ |
816 | WA_SET_BIT_MASKED(MI_MODE, ASYNC_FLIP_PERF_DISABLE); |
||
5354 | serge | 817 | |
6084 | serge | 818 | /* WaDisablePartialInstShootdown:bdw,chv */ |
819 | WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, |
||
820 | PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE); |
||
5354 | serge | 821 | |
822 | /* Use Force Non-Coherent whenever executing a 3D context. This is a |
||
823 | * workaround for for a possible hang in the unlikely event a TLB |
||
824 | * invalidation occurs during a PSD flush. |
||
825 | */ |
||
6084 | serge | 826 | /* WaForceEnableNonCoherent:bdw,chv */ |
827 | /* WaHdcDisableFetchWhenMasked:bdw,chv */ |
||
5354 | serge | 828 | WA_SET_BIT_MASKED(HDC_CHICKEN0, |
6084 | serge | 829 | HDC_DONOT_FETCH_MEM_WHEN_MASKED | |
830 | HDC_FORCE_NON_COHERENT); |
||
5354 | serge | 831 | |
6084 | serge | 832 | /* From the Haswell PRM, Command Reference: Registers, CACHE_MODE_0: |
833 | * "The Hierarchical Z RAW Stall Optimization allows non-overlapping |
||
834 | * polygons in the same 8x4 pixel/sample area to be processed without |
||
835 | * stalling waiting for the earlier ones to write to Hierarchical Z |
||
836 | * buffer." |
||
837 | * |
||
838 | * This optimization is off by default for BDW and CHV; turn it on. |
||
839 | */ |
||
840 | WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7, HIZ_RAW_STALL_OPT_DISABLE); |
||
5354 | serge | 841 | |
6084 | serge | 842 | /* Wa4x4STCOptimizationDisable:bdw,chv */ |
843 | WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE); |
||
844 | |||
5354 | serge | 845 | /* |
846 | * BSpec recommends 8x4 when MSAA is used, |
||
847 | * however in practice 16x4 seems fastest. |
||
848 | * |
||
849 | * Note that PS/WM thread counts depend on the WIZ hashing |
||
850 | * disable bit, which we don't touch here, but it's good |
||
851 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). |
||
852 | */ |
||
853 | WA_SET_FIELD_MASKED(GEN7_GT_MODE, |
||
854 | GEN6_WIZ_HASHING_MASK, |
||
855 | GEN6_WIZ_HASHING_16x4); |
||
856 | |||
857 | return 0; |
||
858 | } |
||
859 | |||
6084 | serge | 860 | static int bdw_init_workarounds(struct intel_engine_cs *ring) |
861 | { |
||
862 | int ret; |
||
863 | struct drm_device *dev = ring->dev; |
||
864 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
865 | |||
866 | ret = gen8_init_workarounds(ring); |
||
867 | if (ret) |
||
868 | return ret; |
||
869 | |||
870 | /* WaDisableThreadStallDopClockGating:bdw (pre-production) */ |
||
871 | WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE); |
||
872 | |||
873 | /* WaDisableDopClockGating:bdw */ |
||
874 | WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2, |
||
875 | DOP_CLOCK_GATING_DISABLE); |
||
876 | |||
877 | WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3, |
||
878 | GEN8_SAMPLER_POWER_BYPASS_DIS); |
||
879 | |||
880 | WA_SET_BIT_MASKED(HDC_CHICKEN0, |
||
881 | /* WaForceContextSaveRestoreNonCoherent:bdw */ |
||
882 | HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT | |
||
883 | /* WaDisableFenceDestinationToSLM:bdw (pre-prod) */ |
||
884 | (IS_BDW_GT3(dev) ? HDC_FENCE_DEST_SLM_DISABLE : 0)); |
||
885 | |||
886 | return 0; |
||
887 | } |
||
888 | |||
5354 | serge | 889 | static int chv_init_workarounds(struct intel_engine_cs *ring) |
890 | { |
||
6084 | serge | 891 | int ret; |
5354 | serge | 892 | struct drm_device *dev = ring->dev; |
893 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
894 | |||
6084 | serge | 895 | ret = gen8_init_workarounds(ring); |
896 | if (ret) |
||
897 | return ret; |
||
898 | |||
5354 | serge | 899 | /* WaDisableThreadStallDopClockGating:chv */ |
6084 | serge | 900 | WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE); |
901 | |||
902 | /* Improve HiZ throughput on CHV. */ |
||
903 | WA_SET_BIT_MASKED(HIZ_CHICKEN, CHV_HZ_8X8_MODE_IN_1X); |
||
904 | |||
905 | return 0; |
||
906 | } |
||
907 | |||
908 | static int gen9_init_workarounds(struct intel_engine_cs *ring) |
||
909 | { |
||
910 | struct drm_device *dev = ring->dev; |
||
911 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
912 | uint32_t tmp; |
||
7144 | serge | 913 | int ret; |
6084 | serge | 914 | |
915 | /* WaEnableLbsSlaRetryTimerDecrement:skl */ |
||
916 | I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) | |
||
917 | GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE); |
||
918 | |||
919 | /* WaDisableKillLogic:bxt,skl */ |
||
920 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | |
||
921 | ECOCHK_DIS_TLB); |
||
922 | |||
923 | /* WaDisablePartialInstShootdown:skl,bxt */ |
||
5354 | serge | 924 | WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, |
6084 | serge | 925 | PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE); |
5354 | serge | 926 | |
6084 | serge | 927 | /* Syncing dependencies between camera and graphics:skl,bxt */ |
928 | WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3, |
||
929 | GEN9_DISABLE_OCL_OOB_SUPPRESS_LOGIC); |
||
930 | |||
7144 | serge | 931 | /* WaDisableDgMirrorFixInHalfSliceChicken5:skl,bxt */ |
6937 | serge | 932 | if (IS_SKL_REVID(dev, 0, SKL_REVID_B0) || |
933 | IS_BXT_REVID(dev, 0, BXT_REVID_A1)) |
||
6084 | serge | 934 | WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5, |
935 | GEN9_DG_MIRROR_FIX_ENABLE); |
||
936 | |||
7144 | serge | 937 | /* WaSetDisablePixMaskCammingAndRhwoInCommonSliceChicken:skl,bxt */ |
6937 | serge | 938 | if (IS_SKL_REVID(dev, 0, SKL_REVID_B0) || |
939 | IS_BXT_REVID(dev, 0, BXT_REVID_A1)) { |
||
6084 | serge | 940 | WA_SET_BIT_MASKED(GEN7_COMMON_SLICE_CHICKEN1, |
941 | GEN9_RHWO_OPTIMIZATION_DISABLE); |
||
942 | /* |
||
943 | * WA also requires GEN9_SLICE_COMMON_ECO_CHICKEN0[14:14] to be set |
||
944 | * but we do that in per ctx batchbuffer as there is an issue |
||
945 | * with this register not getting restored on ctx restore |
||
946 | */ |
||
947 | } |
||
948 | |||
7144 | serge | 949 | /* WaEnableYV12BugFixInHalfSliceChicken7:skl,bxt */ |
6937 | serge | 950 | if (IS_SKL_REVID(dev, SKL_REVID_C0, REVID_FOREVER) || IS_BROXTON(dev)) |
6084 | serge | 951 | WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7, |
952 | GEN9_ENABLE_YV12_BUGFIX); |
||
953 | |||
954 | /* Wa4x4STCOptimizationDisable:skl,bxt */ |
||
955 | /* WaDisablePartialResolveInVc:skl,bxt */ |
||
956 | WA_SET_BIT_MASKED(CACHE_MODE_1, (GEN8_4x4_STC_OPTIMIZATION_DISABLE | |
||
957 | GEN9_PARTIAL_RESOLVE_IN_VC_DISABLE)); |
||
958 | |||
959 | /* WaCcsTlbPrefetchDisable:skl,bxt */ |
||
960 | WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5, |
||
961 | GEN9_CCS_TLB_PREFETCH_ENABLE); |
||
962 | |||
963 | /* WaDisableMaskBasedCammingInRCC:skl,bxt */ |
||
6937 | serge | 964 | if (IS_SKL_REVID(dev, SKL_REVID_C0, SKL_REVID_C0) || |
965 | IS_BXT_REVID(dev, 0, BXT_REVID_A1)) |
||
6084 | serge | 966 | WA_SET_BIT_MASKED(SLICE_ECO_CHICKEN0, |
967 | PIXEL_MASK_CAMMING_DISABLE); |
||
968 | |||
969 | /* WaForceContextSaveRestoreNonCoherent:skl,bxt */ |
||
970 | tmp = HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT; |
||
6937 | serge | 971 | if (IS_SKL_REVID(dev, SKL_REVID_F0, REVID_FOREVER) || |
972 | IS_BXT_REVID(dev, BXT_REVID_B0, REVID_FOREVER)) |
||
6084 | serge | 973 | tmp |= HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE; |
974 | WA_SET_BIT_MASKED(HDC_CHICKEN0, tmp); |
||
975 | |||
976 | /* WaDisableSamplerPowerBypassForSOPingPong:skl,bxt */ |
||
6937 | serge | 977 | if (IS_SKYLAKE(dev) || IS_BXT_REVID(dev, 0, BXT_REVID_B0)) |
6084 | serge | 978 | WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3, |
979 | GEN8_SAMPLER_POWER_BYPASS_DIS); |
||
980 | |||
981 | /* WaDisableSTUnitPowerOptimization:skl,bxt */ |
||
982 | WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN2, GEN8_ST_PO_DISABLE); |
||
983 | |||
7144 | serge | 984 | /* WaOCLCoherentLineFlush:skl,bxt */ |
985 | I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) | |
||
986 | GEN8_LQSC_FLUSH_COHERENT_LINES)); |
||
987 | |||
988 | /* WaEnablePreemptionGranularityControlByUMD:skl,bxt */ |
||
989 | ret= wa_ring_whitelist_reg(ring, GEN8_CS_CHICKEN1); |
||
990 | if (ret) |
||
991 | return ret; |
||
992 | |||
993 | /* WaAllowUMDToModifyHDCChicken1:skl,bxt */ |
||
994 | ret = wa_ring_whitelist_reg(ring, GEN8_HDC_CHICKEN1); |
||
995 | if (ret) |
||
996 | return ret; |
||
997 | |||
6084 | serge | 998 | return 0; |
999 | } |
||
1000 | |||
1001 | static int skl_tune_iz_hashing(struct intel_engine_cs *ring) |
||
1002 | { |
||
1003 | struct drm_device *dev = ring->dev; |
||
1004 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1005 | u8 vals[3] = { 0, 0, 0 }; |
||
1006 | unsigned int i; |
||
1007 | |||
1008 | for (i = 0; i < 3; i++) { |
||
1009 | u8 ss; |
||
1010 | |||
1011 | /* |
||
1012 | * Only consider slices where one, and only one, subslice has 7 |
||
1013 | * EUs |
||
1014 | */ |
||
6937 | serge | 1015 | if (!is_power_of_2(dev_priv->info.subslice_7eu[i])) |
6084 | serge | 1016 | continue; |
1017 | |||
1018 | /* |
||
1019 | * subslice_7eu[i] != 0 (because of the check above) and |
||
1020 | * ss_max == 4 (maximum number of subslices possible per slice) |
||
1021 | * |
||
1022 | * -> 0 <= ss <= 3; |
||
1023 | */ |
||
1024 | ss = ffs(dev_priv->info.subslice_7eu[i]) - 1; |
||
1025 | vals[i] = 3 - ss; |
||
1026 | } |
||
1027 | |||
1028 | if (vals[0] == 0 && vals[1] == 0 && vals[2] == 0) |
||
1029 | return 0; |
||
1030 | |||
1031 | /* Tune IZ hashing. See intel_device_info_runtime_init() */ |
||
1032 | WA_SET_FIELD_MASKED(GEN7_GT_MODE, |
||
1033 | GEN9_IZ_HASHING_MASK(2) | |
||
1034 | GEN9_IZ_HASHING_MASK(1) | |
||
1035 | GEN9_IZ_HASHING_MASK(0), |
||
1036 | GEN9_IZ_HASHING(2, vals[2]) | |
||
1037 | GEN9_IZ_HASHING(1, vals[1]) | |
||
1038 | GEN9_IZ_HASHING(0, vals[0])); |
||
1039 | |||
1040 | return 0; |
||
1041 | } |
||
1042 | |||
1043 | static int skl_init_workarounds(struct intel_engine_cs *ring) |
||
1044 | { |
||
1045 | int ret; |
||
1046 | struct drm_device *dev = ring->dev; |
||
1047 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1048 | |||
1049 | ret = gen9_init_workarounds(ring); |
||
1050 | if (ret) |
||
1051 | return ret; |
||
1052 | |||
7144 | serge | 1053 | /* |
1054 | * Actual WA is to disable percontext preemption granularity control |
||
1055 | * until D0 which is the default case so this is equivalent to |
||
1056 | * !WaDisablePerCtxtPreemptionGranularityControl:skl |
||
1057 | */ |
||
1058 | if (IS_SKL_REVID(dev, SKL_REVID_E0, REVID_FOREVER)) { |
||
1059 | I915_WRITE(GEN7_FF_SLICE_CS_CHICKEN1, |
||
1060 | _MASKED_BIT_ENABLE(GEN9_FFSC_PERCTX_PREEMPT_CTRL)); |
||
1061 | } |
||
1062 | |||
6937 | serge | 1063 | if (IS_SKL_REVID(dev, 0, SKL_REVID_D0)) { |
6084 | serge | 1064 | /* WaDisableChickenBitTSGBarrierAckForFFSliceCS:skl */ |
1065 | I915_WRITE(FF_SLICE_CS_CHICKEN2, |
||
1066 | _MASKED_BIT_ENABLE(GEN9_TSG_BARRIER_ACK_DISABLE)); |
||
1067 | } |
||
1068 | |||
1069 | /* GEN8_L3SQCREG4 has a dependency with WA batch so any new changes |
||
1070 | * involving this register should also be added to WA batch as required. |
||
5354 | serge | 1071 | */ |
6937 | serge | 1072 | if (IS_SKL_REVID(dev, 0, SKL_REVID_E0)) |
6084 | serge | 1073 | /* WaDisableLSQCROPERFforOCL:skl */ |
1074 | I915_WRITE(GEN8_L3SQCREG4, I915_READ(GEN8_L3SQCREG4) | |
||
1075 | GEN8_LQSC_RO_PERF_DIS); |
||
5354 | serge | 1076 | |
6084 | serge | 1077 | /* WaEnableGapsTsvCreditFix:skl */ |
6937 | serge | 1078 | if (IS_SKL_REVID(dev, SKL_REVID_C0, REVID_FOREVER)) { |
6084 | serge | 1079 | I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) | |
1080 | GEN9_GAPS_TSV_CREDIT_DISABLE)); |
||
1081 | } |
||
1082 | |||
1083 | /* WaDisablePowerCompilerClockGating:skl */ |
||
6937 | serge | 1084 | if (IS_SKL_REVID(dev, SKL_REVID_B0, SKL_REVID_B0)) |
6084 | serge | 1085 | WA_SET_BIT_MASKED(HIZ_CHICKEN, |
1086 | BDW_HIZ_POWER_COMPILER_CLOCK_GATING_DISABLE); |
||
1087 | |||
6937 | serge | 1088 | /* This is tied to WaForceContextSaveRestoreNonCoherent */ |
1089 | if (IS_SKL_REVID(dev, 0, REVID_FOREVER)) { |
||
6084 | serge | 1090 | /* |
1091 | *Use Force Non-Coherent whenever executing a 3D context. This |
||
1092 | * is a workaround for a possible hang in the unlikely event |
||
1093 | * a TLB invalidation occurs during a PSD flush. |
||
1094 | */ |
||
1095 | /* WaForceEnableNonCoherent:skl */ |
||
1096 | WA_SET_BIT_MASKED(HDC_CHICKEN0, |
||
1097 | HDC_FORCE_NON_COHERENT); |
||
6937 | serge | 1098 | |
1099 | /* WaDisableHDCInvalidation:skl */ |
||
1100 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | |
||
1101 | BDW_DISABLE_HDC_INVALIDATION); |
||
6084 | serge | 1102 | } |
1103 | |||
7144 | serge | 1104 | /* WaBarrierPerformanceFixDisable:skl */ |
6937 | serge | 1105 | if (IS_SKL_REVID(dev, SKL_REVID_C0, SKL_REVID_D0)) |
6084 | serge | 1106 | WA_SET_BIT_MASKED(HDC_CHICKEN0, |
1107 | HDC_FENCE_DEST_SLM_DISABLE | |
||
1108 | HDC_BARRIER_PERFORMANCE_DISABLE); |
||
1109 | |||
1110 | /* WaDisableSbeCacheDispatchPortSharing:skl */ |
||
6937 | serge | 1111 | if (IS_SKL_REVID(dev, 0, SKL_REVID_F0)) |
6084 | serge | 1112 | WA_SET_BIT_MASKED( |
1113 | GEN7_HALF_SLICE_CHICKEN1, |
||
1114 | GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE); |
||
1115 | |||
7144 | serge | 1116 | /* WaDisableLSQCROPERFforOCL:skl */ |
1117 | ret = wa_ring_whitelist_reg(ring, GEN8_L3SQCREG4); |
||
1118 | if (ret) |
||
1119 | return ret; |
||
1120 | |||
6084 | serge | 1121 | return skl_tune_iz_hashing(ring); |
1122 | } |
||
1123 | |||
1124 | static int bxt_init_workarounds(struct intel_engine_cs *ring) |
||
1125 | { |
||
1126 | int ret; |
||
1127 | struct drm_device *dev = ring->dev; |
||
1128 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1129 | |||
1130 | ret = gen9_init_workarounds(ring); |
||
1131 | if (ret) |
||
1132 | return ret; |
||
1133 | |||
1134 | /* WaStoreMultiplePTEenable:bxt */ |
||
1135 | /* This is a requirement according to Hardware specification */ |
||
6937 | serge | 1136 | if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) |
6084 | serge | 1137 | I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_TLBPF); |
1138 | |||
1139 | /* WaSetClckGatingDisableMedia:bxt */ |
||
6937 | serge | 1140 | if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) { |
6084 | serge | 1141 | I915_WRITE(GEN7_MISCCPCTL, (I915_READ(GEN7_MISCCPCTL) & |
1142 | ~GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE)); |
||
1143 | } |
||
1144 | |||
1145 | /* WaDisableThreadStallDopClockGating:bxt */ |
||
1146 | WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, |
||
1147 | STALL_DOP_GATING_DISABLE); |
||
1148 | |||
1149 | /* WaDisableSbeCacheDispatchPortSharing:bxt */ |
||
6937 | serge | 1150 | if (IS_BXT_REVID(dev, 0, BXT_REVID_B0)) { |
6084 | serge | 1151 | WA_SET_BIT_MASKED( |
1152 | GEN7_HALF_SLICE_CHICKEN1, |
||
1153 | GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE); |
||
1154 | } |
||
1155 | |||
7144 | serge | 1156 | /* WaDisableObjectLevelPreemptionForTrifanOrPolygon:bxt */ |
1157 | /* WaDisableObjectLevelPreemptionForInstancedDraw:bxt */ |
||
1158 | /* WaDisableObjectLevelPreemtionForInstanceId:bxt */ |
||
1159 | /* WaDisableLSQCROPERFforOCL:bxt */ |
||
1160 | if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) { |
||
1161 | ret = wa_ring_whitelist_reg(ring, GEN9_CS_DEBUG_MODE1); |
||
1162 | if (ret) |
||
1163 | return ret; |
||
1164 | |||
1165 | ret = wa_ring_whitelist_reg(ring, GEN8_L3SQCREG4); |
||
1166 | if (ret) |
||
1167 | return ret; |
||
1168 | } |
||
1169 | |||
5354 | serge | 1170 | return 0; |
1171 | } |
||
1172 | |||
1173 | int init_workarounds_ring(struct intel_engine_cs *ring) |
||
1174 | { |
||
1175 | struct drm_device *dev = ring->dev; |
||
1176 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1177 | |||
1178 | WARN_ON(ring->id != RCS); |
||
1179 | |||
1180 | dev_priv->workarounds.count = 0; |
||
7144 | serge | 1181 | dev_priv->workarounds.hw_whitelist_count[RCS] = 0; |
5354 | serge | 1182 | |
1183 | if (IS_BROADWELL(dev)) |
||
1184 | return bdw_init_workarounds(ring); |
||
1185 | |||
1186 | if (IS_CHERRYVIEW(dev)) |
||
1187 | return chv_init_workarounds(ring); |
||
1188 | |||
6084 | serge | 1189 | if (IS_SKYLAKE(dev)) |
1190 | return skl_init_workarounds(ring); |
||
1191 | |||
1192 | if (IS_BROXTON(dev)) |
||
1193 | return bxt_init_workarounds(ring); |
||
1194 | |||
5354 | serge | 1195 | return 0; |
1196 | } |
||
1197 | |||
5060 | serge | 1198 | static int init_render_ring(struct intel_engine_cs *ring) |
2332 | Serge | 1199 | { |
1200 | struct drm_device *dev = ring->dev; |
||
1201 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1202 | int ret = init_ring_common(ring); |
||
5060 | serge | 1203 | if (ret) |
1204 | return ret; |
||
2332 | Serge | 1205 | |
5060 | serge | 1206 | /* WaTimedSingleVertexDispatch:cl,bw,ctg,elk,ilk,snb */ |
1207 | if (INTEL_INFO(dev)->gen >= 4 && INTEL_INFO(dev)->gen < 7) |
||
3031 | serge | 1208 | I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(VS_TIMER_DISPATCH)); |
3243 | Serge | 1209 | |
1210 | /* We need to disable the AsyncFlip performance optimisations in order |
||
1211 | * to use MI_WAIT_FOR_EVENT within the CS. It should already be |
||
1212 | * programmed to '1' on all products. |
||
4104 | Serge | 1213 | * |
6084 | serge | 1214 | * WaDisableAsyncFlipPerfMode:snb,ivb,hsw,vlv |
3243 | Serge | 1215 | */ |
6084 | serge | 1216 | if (INTEL_INFO(dev)->gen >= 6 && INTEL_INFO(dev)->gen < 8) |
3243 | Serge | 1217 | I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(ASYNC_FLIP_PERF_DISABLE)); |
1218 | |||
1219 | /* Required for the hardware to program scanline values for waiting */ |
||
5060 | serge | 1220 | /* WaEnableFlushTlbInvalidationMode:snb */ |
3243 | Serge | 1221 | if (INTEL_INFO(dev)->gen == 6) |
1222 | I915_WRITE(GFX_MODE, |
||
5060 | serge | 1223 | _MASKED_BIT_ENABLE(GFX_TLB_INVALIDATE_EXPLICIT)); |
3243 | Serge | 1224 | |
5060 | serge | 1225 | /* WaBCSVCSTlbInvalidationMode:ivb,vlv,hsw */ |
6084 | serge | 1226 | if (IS_GEN7(dev)) |
1227 | I915_WRITE(GFX_MODE_GEN7, |
||
5060 | serge | 1228 | _MASKED_BIT_ENABLE(GFX_TLB_INVALIDATE_EXPLICIT) | |
6084 | serge | 1229 | _MASKED_BIT_ENABLE(GFX_REPLAY_MODE)); |
2332 | Serge | 1230 | |
3031 | serge | 1231 | if (IS_GEN6(dev)) { |
1232 | /* From the Sandybridge PRM, volume 1 part 3, page 24: |
||
1233 | * "If this bit is set, STCunit will have LRA as replacement |
||
1234 | * policy. [...] This bit must be reset. LRA replacement |
||
1235 | * policy is not supported." |
||
1236 | */ |
||
1237 | I915_WRITE(CACHE_MODE_0, |
||
1238 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
||
2342 | Serge | 1239 | } |
1240 | |||
6084 | serge | 1241 | if (INTEL_INFO(dev)->gen >= 6 && INTEL_INFO(dev)->gen < 8) |
3031 | serge | 1242 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING)); |
1243 | |||
4560 | Serge | 1244 | if (HAS_L3_DPF(dev)) |
1245 | I915_WRITE_IMR(ring, ~GT_PARITY_ERROR(dev)); |
||
3031 | serge | 1246 | |
5354 | serge | 1247 | return init_workarounds_ring(ring); |
2332 | Serge | 1248 | } |
1249 | |||
5060 | serge | 1250 | static void render_ring_cleanup(struct intel_engine_cs *ring) |
2332 | Serge | 1251 | { |
3480 | Serge | 1252 | struct drm_device *dev = ring->dev; |
5128 | serge | 1253 | struct drm_i915_private *dev_priv = dev->dev_private; |
3480 | Serge | 1254 | |
5128 | serge | 1255 | if (dev_priv->semaphore_obj) { |
1256 | i915_gem_object_ggtt_unpin(dev_priv->semaphore_obj); |
||
1257 | drm_gem_object_unreference(&dev_priv->semaphore_obj->base); |
||
1258 | dev_priv->semaphore_obj = NULL; |
||
1259 | } |
||
1260 | |||
5354 | serge | 1261 | intel_fini_pipe_control(ring); |
2332 | Serge | 1262 | } |
1263 | |||
6084 | serge | 1264 | static int gen8_rcs_signal(struct drm_i915_gem_request *signaller_req, |
5060 | serge | 1265 | unsigned int num_dwords) |
2332 | Serge | 1266 | { |
5060 | serge | 1267 | #define MBOX_UPDATE_DWORDS 8 |
6084 | serge | 1268 | struct intel_engine_cs *signaller = signaller_req->ring; |
5060 | serge | 1269 | struct drm_device *dev = signaller->dev; |
1270 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1271 | struct intel_engine_cs *waiter; |
||
1272 | int i, ret, num_rings; |
||
1273 | |||
1274 | num_rings = hweight32(INTEL_INFO(dev)->ring_mask); |
||
1275 | num_dwords += (num_rings-1) * MBOX_UPDATE_DWORDS; |
||
1276 | #undef MBOX_UPDATE_DWORDS |
||
1277 | |||
6084 | serge | 1278 | ret = intel_ring_begin(signaller_req, num_dwords); |
5060 | serge | 1279 | if (ret) |
1280 | return ret; |
||
1281 | |||
1282 | for_each_ring(waiter, dev_priv, i) { |
||
6084 | serge | 1283 | u32 seqno; |
5060 | serge | 1284 | u64 gtt_offset = signaller->semaphore.signal_ggtt[i]; |
1285 | if (gtt_offset == MI_SEMAPHORE_SYNC_INVALID) |
||
1286 | continue; |
||
1287 | |||
6084 | serge | 1288 | seqno = i915_gem_request_get_seqno(signaller_req); |
5060 | serge | 1289 | intel_ring_emit(signaller, GFX_OP_PIPE_CONTROL(6)); |
1290 | intel_ring_emit(signaller, PIPE_CONTROL_GLOBAL_GTT_IVB | |
||
1291 | PIPE_CONTROL_QW_WRITE | |
||
1292 | PIPE_CONTROL_FLUSH_ENABLE); |
||
1293 | intel_ring_emit(signaller, lower_32_bits(gtt_offset)); |
||
1294 | intel_ring_emit(signaller, upper_32_bits(gtt_offset)); |
||
6084 | serge | 1295 | intel_ring_emit(signaller, seqno); |
5060 | serge | 1296 | intel_ring_emit(signaller, 0); |
1297 | intel_ring_emit(signaller, MI_SEMAPHORE_SIGNAL | |
||
1298 | MI_SEMAPHORE_TARGET(waiter->id)); |
||
1299 | intel_ring_emit(signaller, 0); |
||
1300 | } |
||
1301 | |||
1302 | return 0; |
||
2332 | Serge | 1303 | } |
1304 | |||
6084 | serge | 1305 | static int gen8_xcs_signal(struct drm_i915_gem_request *signaller_req, |
5060 | serge | 1306 | unsigned int num_dwords) |
1307 | { |
||
1308 | #define MBOX_UPDATE_DWORDS 6 |
||
6084 | serge | 1309 | struct intel_engine_cs *signaller = signaller_req->ring; |
5060 | serge | 1310 | struct drm_device *dev = signaller->dev; |
1311 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1312 | struct intel_engine_cs *waiter; |
||
1313 | int i, ret, num_rings; |
||
1314 | |||
1315 | num_rings = hweight32(INTEL_INFO(dev)->ring_mask); |
||
1316 | num_dwords += (num_rings-1) * MBOX_UPDATE_DWORDS; |
||
1317 | #undef MBOX_UPDATE_DWORDS |
||
1318 | |||
6084 | serge | 1319 | ret = intel_ring_begin(signaller_req, num_dwords); |
5060 | serge | 1320 | if (ret) |
1321 | return ret; |
||
1322 | |||
1323 | for_each_ring(waiter, dev_priv, i) { |
||
6084 | serge | 1324 | u32 seqno; |
5060 | serge | 1325 | u64 gtt_offset = signaller->semaphore.signal_ggtt[i]; |
1326 | if (gtt_offset == MI_SEMAPHORE_SYNC_INVALID) |
||
1327 | continue; |
||
1328 | |||
6084 | serge | 1329 | seqno = i915_gem_request_get_seqno(signaller_req); |
5060 | serge | 1330 | intel_ring_emit(signaller, (MI_FLUSH_DW + 1) | |
1331 | MI_FLUSH_DW_OP_STOREDW); |
||
1332 | intel_ring_emit(signaller, lower_32_bits(gtt_offset) | |
||
1333 | MI_FLUSH_DW_USE_GTT); |
||
1334 | intel_ring_emit(signaller, upper_32_bits(gtt_offset)); |
||
6084 | serge | 1335 | intel_ring_emit(signaller, seqno); |
5060 | serge | 1336 | intel_ring_emit(signaller, MI_SEMAPHORE_SIGNAL | |
1337 | MI_SEMAPHORE_TARGET(waiter->id)); |
||
1338 | intel_ring_emit(signaller, 0); |
||
1339 | } |
||
1340 | |||
1341 | return 0; |
||
1342 | } |
||
1343 | |||
6084 | serge | 1344 | static int gen6_signal(struct drm_i915_gem_request *signaller_req, |
5060 | serge | 1345 | unsigned int num_dwords) |
1346 | { |
||
6084 | serge | 1347 | struct intel_engine_cs *signaller = signaller_req->ring; |
5060 | serge | 1348 | struct drm_device *dev = signaller->dev; |
1349 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1350 | struct intel_engine_cs *useless; |
||
1351 | int i, ret, num_rings; |
||
1352 | |||
1353 | #define MBOX_UPDATE_DWORDS 3 |
||
1354 | num_rings = hweight32(INTEL_INFO(dev)->ring_mask); |
||
1355 | num_dwords += round_up((num_rings-1) * MBOX_UPDATE_DWORDS, 2); |
||
1356 | #undef MBOX_UPDATE_DWORDS |
||
1357 | |||
6084 | serge | 1358 | ret = intel_ring_begin(signaller_req, num_dwords); |
5060 | serge | 1359 | if (ret) |
1360 | return ret; |
||
1361 | |||
1362 | for_each_ring(useless, dev_priv, i) { |
||
6937 | serge | 1363 | i915_reg_t mbox_reg = signaller->semaphore.mbox.signal[i]; |
1364 | |||
1365 | if (i915_mmio_reg_valid(mbox_reg)) { |
||
6084 | serge | 1366 | u32 seqno = i915_gem_request_get_seqno(signaller_req); |
6937 | serge | 1367 | |
5060 | serge | 1368 | intel_ring_emit(signaller, MI_LOAD_REGISTER_IMM(1)); |
6937 | serge | 1369 | intel_ring_emit_reg(signaller, mbox_reg); |
6084 | serge | 1370 | intel_ring_emit(signaller, seqno); |
5060 | serge | 1371 | } |
1372 | } |
||
1373 | |||
1374 | /* If num_dwords was rounded, make sure the tail pointer is correct */ |
||
1375 | if (num_rings % 2 == 0) |
||
1376 | intel_ring_emit(signaller, MI_NOOP); |
||
1377 | |||
1378 | return 0; |
||
1379 | } |
||
1380 | |||
2342 | Serge | 1381 | /** |
1382 | * gen6_add_request - Update the semaphore mailbox registers |
||
1383 | * |
||
6084 | serge | 1384 | * @request - request to write to the ring |
2342 | Serge | 1385 | * |
1386 | * Update the mailbox registers in the *other* rings with the current seqno. |
||
1387 | * This acts like a signal in the canonical semaphore. |
||
1388 | */ |
||
2332 | Serge | 1389 | static int |
6084 | serge | 1390 | gen6_add_request(struct drm_i915_gem_request *req) |
2332 | Serge | 1391 | { |
6084 | serge | 1392 | struct intel_engine_cs *ring = req->ring; |
5060 | serge | 1393 | int ret; |
2332 | Serge | 1394 | |
5060 | serge | 1395 | if (ring->semaphore.signal) |
6084 | serge | 1396 | ret = ring->semaphore.signal(req, 4); |
5060 | serge | 1397 | else |
6084 | serge | 1398 | ret = intel_ring_begin(req, 4); |
4560 | Serge | 1399 | |
2332 | Serge | 1400 | if (ret) |
1401 | return ret; |
||
1402 | |||
1403 | intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
||
1404 | intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
||
6084 | serge | 1405 | intel_ring_emit(ring, i915_gem_request_get_seqno(req)); |
2332 | Serge | 1406 | intel_ring_emit(ring, MI_USER_INTERRUPT); |
4560 | Serge | 1407 | __intel_ring_advance(ring); |
2332 | Serge | 1408 | |
1409 | return 0; |
||
1410 | } |
||
1411 | |||
3480 | Serge | 1412 | static inline bool i915_gem_has_seqno_wrapped(struct drm_device *dev, |
1413 | u32 seqno) |
||
1414 | { |
||
1415 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1416 | return dev_priv->last_seqno < seqno; |
||
1417 | } |
||
1418 | |||
2342 | Serge | 1419 | /** |
1420 | * intel_ring_sync - sync the waiter to the signaller on seqno |
||
1421 | * |
||
1422 | * @waiter - ring that is waiting |
||
1423 | * @signaller - ring which has, or will signal |
||
1424 | * @seqno - seqno which the waiter will block on |
||
1425 | */ |
||
5060 | serge | 1426 | |
2342 | Serge | 1427 | static int |
6084 | serge | 1428 | gen8_ring_sync(struct drm_i915_gem_request *waiter_req, |
5060 | serge | 1429 | struct intel_engine_cs *signaller, |
1430 | u32 seqno) |
||
1431 | { |
||
6084 | serge | 1432 | struct intel_engine_cs *waiter = waiter_req->ring; |
5060 | serge | 1433 | struct drm_i915_private *dev_priv = waiter->dev->dev_private; |
1434 | int ret; |
||
1435 | |||
6084 | serge | 1436 | ret = intel_ring_begin(waiter_req, 4); |
5060 | serge | 1437 | if (ret) |
1438 | return ret; |
||
1439 | |||
1440 | intel_ring_emit(waiter, MI_SEMAPHORE_WAIT | |
||
1441 | MI_SEMAPHORE_GLOBAL_GTT | |
||
1442 | MI_SEMAPHORE_POLL | |
||
1443 | MI_SEMAPHORE_SAD_GTE_SDD); |
||
1444 | intel_ring_emit(waiter, seqno); |
||
1445 | intel_ring_emit(waiter, |
||
1446 | lower_32_bits(GEN8_WAIT_OFFSET(waiter, signaller->id))); |
||
1447 | intel_ring_emit(waiter, |
||
1448 | upper_32_bits(GEN8_WAIT_OFFSET(waiter, signaller->id))); |
||
1449 | intel_ring_advance(waiter); |
||
1450 | return 0; |
||
1451 | } |
||
1452 | |||
1453 | static int |
||
6084 | serge | 1454 | gen6_ring_sync(struct drm_i915_gem_request *waiter_req, |
5060 | serge | 1455 | struct intel_engine_cs *signaller, |
6084 | serge | 1456 | u32 seqno) |
2332 | Serge | 1457 | { |
6084 | serge | 1458 | struct intel_engine_cs *waiter = waiter_req->ring; |
2342 | Serge | 1459 | u32 dw1 = MI_SEMAPHORE_MBOX | |
1460 | MI_SEMAPHORE_COMPARE | |
||
1461 | MI_SEMAPHORE_REGISTER; |
||
5060 | serge | 1462 | u32 wait_mbox = signaller->semaphore.mbox.wait[waiter->id]; |
1463 | int ret; |
||
2332 | Serge | 1464 | |
3031 | serge | 1465 | /* Throughout all of the GEM code, seqno passed implies our current |
1466 | * seqno is >= the last seqno executed. However for hardware the |
||
1467 | * comparison is strictly greater than. |
||
1468 | */ |
||
1469 | seqno -= 1; |
||
1470 | |||
5060 | serge | 1471 | WARN_ON(wait_mbox == MI_SEMAPHORE_SYNC_INVALID); |
3031 | serge | 1472 | |
6084 | serge | 1473 | ret = intel_ring_begin(waiter_req, 4); |
2332 | Serge | 1474 | if (ret) |
1475 | return ret; |
||
1476 | |||
3480 | Serge | 1477 | /* If seqno wrap happened, omit the wait with no-ops */ |
1478 | if (likely(!i915_gem_has_seqno_wrapped(waiter->dev, seqno))) { |
||
5060 | serge | 1479 | intel_ring_emit(waiter, dw1 | wait_mbox); |
6084 | serge | 1480 | intel_ring_emit(waiter, seqno); |
1481 | intel_ring_emit(waiter, 0); |
||
1482 | intel_ring_emit(waiter, MI_NOOP); |
||
3480 | Serge | 1483 | } else { |
1484 | intel_ring_emit(waiter, MI_NOOP); |
||
1485 | intel_ring_emit(waiter, MI_NOOP); |
||
1486 | intel_ring_emit(waiter, MI_NOOP); |
||
1487 | intel_ring_emit(waiter, MI_NOOP); |
||
1488 | } |
||
2342 | Serge | 1489 | intel_ring_advance(waiter); |
2332 | Serge | 1490 | |
1491 | return 0; |
||
1492 | } |
||
1493 | |||
1494 | #define PIPE_CONTROL_FLUSH(ring__, addr__) \ |
||
1495 | do { \ |
||
2342 | Serge | 1496 | intel_ring_emit(ring__, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | \ |
1497 | PIPE_CONTROL_DEPTH_STALL); \ |
||
2332 | Serge | 1498 | intel_ring_emit(ring__, (addr__) | PIPE_CONTROL_GLOBAL_GTT); \ |
1499 | intel_ring_emit(ring__, 0); \ |
||
1500 | intel_ring_emit(ring__, 0); \ |
||
1501 | } while (0) |
||
1502 | |||
1503 | static int |
||
6084 | serge | 1504 | pc_render_add_request(struct drm_i915_gem_request *req) |
2332 | Serge | 1505 | { |
6084 | serge | 1506 | struct intel_engine_cs *ring = req->ring; |
5060 | serge | 1507 | u32 scratch_addr = ring->scratch.gtt_offset + 2 * CACHELINE_BYTES; |
2332 | Serge | 1508 | int ret; |
1509 | |||
1510 | /* For Ironlake, MI_USER_INTERRUPT was deprecated and apparently |
||
1511 | * incoherent with writes to memory, i.e. completely fubar, |
||
1512 | * so we need to use PIPE_NOTIFY instead. |
||
1513 | * |
||
1514 | * However, we also need to workaround the qword write |
||
1515 | * incoherence by flushing the 6 PIPE_NOTIFY buffers out to |
||
1516 | * memory before requesting an interrupt. |
||
1517 | */ |
||
6084 | serge | 1518 | ret = intel_ring_begin(req, 32); |
2332 | Serge | 1519 | if (ret) |
1520 | return ret; |
||
1521 | |||
2342 | Serge | 1522 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | |
1523 | PIPE_CONTROL_WRITE_FLUSH | |
||
1524 | PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE); |
||
4104 | Serge | 1525 | intel_ring_emit(ring, ring->scratch.gtt_offset | PIPE_CONTROL_GLOBAL_GTT); |
6084 | serge | 1526 | intel_ring_emit(ring, i915_gem_request_get_seqno(req)); |
2332 | Serge | 1527 | intel_ring_emit(ring, 0); |
1528 | PIPE_CONTROL_FLUSH(ring, scratch_addr); |
||
5060 | serge | 1529 | scratch_addr += 2 * CACHELINE_BYTES; /* write to separate cachelines */ |
2332 | Serge | 1530 | PIPE_CONTROL_FLUSH(ring, scratch_addr); |
5060 | serge | 1531 | scratch_addr += 2 * CACHELINE_BYTES; |
2332 | Serge | 1532 | PIPE_CONTROL_FLUSH(ring, scratch_addr); |
5060 | serge | 1533 | scratch_addr += 2 * CACHELINE_BYTES; |
2332 | Serge | 1534 | PIPE_CONTROL_FLUSH(ring, scratch_addr); |
5060 | serge | 1535 | scratch_addr += 2 * CACHELINE_BYTES; |
2332 | Serge | 1536 | PIPE_CONTROL_FLUSH(ring, scratch_addr); |
5060 | serge | 1537 | scratch_addr += 2 * CACHELINE_BYTES; |
2332 | Serge | 1538 | PIPE_CONTROL_FLUSH(ring, scratch_addr); |
3031 | serge | 1539 | |
2342 | Serge | 1540 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | |
1541 | PIPE_CONTROL_WRITE_FLUSH | |
||
1542 | PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE | |
||
2332 | Serge | 1543 | PIPE_CONTROL_NOTIFY); |
4104 | Serge | 1544 | intel_ring_emit(ring, ring->scratch.gtt_offset | PIPE_CONTROL_GLOBAL_GTT); |
6084 | serge | 1545 | intel_ring_emit(ring, i915_gem_request_get_seqno(req)); |
2332 | Serge | 1546 | intel_ring_emit(ring, 0); |
4560 | Serge | 1547 | __intel_ring_advance(ring); |
2332 | Serge | 1548 | |
1549 | return 0; |
||
1550 | } |
||
1551 | |||
1552 | static u32 |
||
5060 | serge | 1553 | gen6_ring_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency) |
2342 | Serge | 1554 | { |
1555 | /* Workaround to force correct ordering between irq and seqno writes on |
||
1556 | * ivb (and maybe also on snb) by reading from a CS register (like |
||
1557 | * ACTHD) before reading the status page. */ |
||
5060 | serge | 1558 | if (!lazy_coherency) { |
1559 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
||
1560 | POSTING_READ(RING_ACTHD(ring->mmio_base)); |
||
1561 | } |
||
1562 | |||
2342 | Serge | 1563 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); |
1564 | } |
||
1565 | |||
1566 | static u32 |
||
5060 | serge | 1567 | ring_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency) |
2332 | Serge | 1568 | { |
1569 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); |
||
1570 | } |
||
1571 | |||
3480 | Serge | 1572 | static void |
5060 | serge | 1573 | ring_set_seqno(struct intel_engine_cs *ring, u32 seqno) |
3480 | Serge | 1574 | { |
1575 | intel_write_status_page(ring, I915_GEM_HWS_INDEX, seqno); |
||
1576 | } |
||
1577 | |||
2332 | Serge | 1578 | static u32 |
5060 | serge | 1579 | pc_render_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency) |
2332 | Serge | 1580 | { |
4104 | Serge | 1581 | return ring->scratch.cpu_page[0]; |
2332 | Serge | 1582 | } |
1583 | |||
3480 | Serge | 1584 | static void |
5060 | serge | 1585 | pc_render_set_seqno(struct intel_engine_cs *ring, u32 seqno) |
3480 | Serge | 1586 | { |
4104 | Serge | 1587 | ring->scratch.cpu_page[0] = seqno; |
3480 | Serge | 1588 | } |
1589 | |||
3031 | serge | 1590 | static bool |
5060 | serge | 1591 | gen5_ring_get_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1592 | { |
3031 | serge | 1593 | struct drm_device *dev = ring->dev; |
5060 | serge | 1594 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1595 | unsigned long flags; |
1596 | |||
5354 | serge | 1597 | if (WARN_ON(!intel_irqs_enabled(dev_priv))) |
3031 | serge | 1598 | return false; |
1599 | |||
1600 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
4104 | Serge | 1601 | if (ring->irq_refcount++ == 0) |
5060 | serge | 1602 | gen5_enable_gt_irq(dev_priv, ring->irq_enable_mask); |
3031 | serge | 1603 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
1604 | |||
1605 | return true; |
||
2332 | Serge | 1606 | } |
1607 | |||
1608 | static void |
||
5060 | serge | 1609 | gen5_ring_put_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1610 | { |
3031 | serge | 1611 | struct drm_device *dev = ring->dev; |
5060 | serge | 1612 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1613 | unsigned long flags; |
1614 | |||
1615 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
4104 | Serge | 1616 | if (--ring->irq_refcount == 0) |
5060 | serge | 1617 | gen5_disable_gt_irq(dev_priv, ring->irq_enable_mask); |
3031 | serge | 1618 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
2332 | Serge | 1619 | } |
1620 | |||
3031 | serge | 1621 | static bool |
5060 | serge | 1622 | i9xx_ring_get_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1623 | { |
3031 | serge | 1624 | struct drm_device *dev = ring->dev; |
5060 | serge | 1625 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1626 | unsigned long flags; |
1627 | |||
5354 | serge | 1628 | if (!intel_irqs_enabled(dev_priv)) |
3031 | serge | 1629 | return false; |
1630 | |||
1631 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
1632 | if (ring->irq_refcount++ == 0) { |
||
1633 | dev_priv->irq_mask &= ~ring->irq_enable_mask; |
||
6084 | serge | 1634 | I915_WRITE(IMR, dev_priv->irq_mask); |
1635 | POSTING_READ(IMR); |
||
3031 | serge | 1636 | } |
1637 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
||
1638 | |||
1639 | return true; |
||
2332 | Serge | 1640 | } |
1641 | |||
1642 | static void |
||
5060 | serge | 1643 | i9xx_ring_put_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1644 | { |
3031 | serge | 1645 | struct drm_device *dev = ring->dev; |
5060 | serge | 1646 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1647 | unsigned long flags; |
1648 | |||
1649 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
1650 | if (--ring->irq_refcount == 0) { |
||
1651 | dev_priv->irq_mask |= ring->irq_enable_mask; |
||
6084 | serge | 1652 | I915_WRITE(IMR, dev_priv->irq_mask); |
1653 | POSTING_READ(IMR); |
||
3031 | serge | 1654 | } |
1655 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
||
2332 | Serge | 1656 | } |
1657 | |||
1658 | static bool |
||
5060 | serge | 1659 | i8xx_ring_get_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1660 | { |
1661 | struct drm_device *dev = ring->dev; |
||
5060 | serge | 1662 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1663 | unsigned long flags; |
2332 | Serge | 1664 | |
5354 | serge | 1665 | if (!intel_irqs_enabled(dev_priv)) |
2332 | Serge | 1666 | return false; |
1667 | |||
3031 | serge | 1668 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
2332 | Serge | 1669 | if (ring->irq_refcount++ == 0) { |
3031 | serge | 1670 | dev_priv->irq_mask &= ~ring->irq_enable_mask; |
1671 | I915_WRITE16(IMR, dev_priv->irq_mask); |
||
1672 | POSTING_READ16(IMR); |
||
2332 | Serge | 1673 | } |
3031 | serge | 1674 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
2332 | Serge | 1675 | |
1676 | return true; |
||
1677 | } |
||
1678 | |||
1679 | static void |
||
5060 | serge | 1680 | i8xx_ring_put_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1681 | { |
1682 | struct drm_device *dev = ring->dev; |
||
5060 | serge | 1683 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1684 | unsigned long flags; |
2332 | Serge | 1685 | |
3031 | serge | 1686 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
2332 | Serge | 1687 | if (--ring->irq_refcount == 0) { |
3031 | serge | 1688 | dev_priv->irq_mask |= ring->irq_enable_mask; |
1689 | I915_WRITE16(IMR, dev_priv->irq_mask); |
||
1690 | POSTING_READ16(IMR); |
||
2332 | Serge | 1691 | } |
3031 | serge | 1692 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
2332 | Serge | 1693 | } |
1694 | |||
1695 | static int |
||
6084 | serge | 1696 | bsd_ring_flush(struct drm_i915_gem_request *req, |
2332 | Serge | 1697 | u32 invalidate_domains, |
1698 | u32 flush_domains) |
||
1699 | { |
||
6084 | serge | 1700 | struct intel_engine_cs *ring = req->ring; |
2332 | Serge | 1701 | int ret; |
1702 | |||
6084 | serge | 1703 | ret = intel_ring_begin(req, 2); |
2332 | Serge | 1704 | if (ret) |
1705 | return ret; |
||
1706 | |||
1707 | intel_ring_emit(ring, MI_FLUSH); |
||
1708 | intel_ring_emit(ring, MI_NOOP); |
||
1709 | intel_ring_advance(ring); |
||
1710 | return 0; |
||
1711 | } |
||
1712 | |||
1713 | static int |
||
6084 | serge | 1714 | i9xx_add_request(struct drm_i915_gem_request *req) |
2332 | Serge | 1715 | { |
6084 | serge | 1716 | struct intel_engine_cs *ring = req->ring; |
2332 | Serge | 1717 | int ret; |
1718 | |||
6084 | serge | 1719 | ret = intel_ring_begin(req, 4); |
2332 | Serge | 1720 | if (ret) |
1721 | return ret; |
||
1722 | |||
1723 | intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
||
1724 | intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
||
6084 | serge | 1725 | intel_ring_emit(ring, i915_gem_request_get_seqno(req)); |
2332 | Serge | 1726 | intel_ring_emit(ring, MI_USER_INTERRUPT); |
4560 | Serge | 1727 | __intel_ring_advance(ring); |
2332 | Serge | 1728 | |
1729 | return 0; |
||
1730 | } |
||
1731 | |||
1732 | static bool |
||
5060 | serge | 1733 | gen6_ring_get_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1734 | { |
1735 | struct drm_device *dev = ring->dev; |
||
5060 | serge | 1736 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1737 | unsigned long flags; |
2332 | Serge | 1738 | |
5354 | serge | 1739 | if (WARN_ON(!intel_irqs_enabled(dev_priv))) |
6084 | serge | 1740 | return false; |
2332 | Serge | 1741 | |
3031 | serge | 1742 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
2332 | Serge | 1743 | if (ring->irq_refcount++ == 0) { |
4560 | Serge | 1744 | if (HAS_L3_DPF(dev) && ring->id == RCS) |
4104 | Serge | 1745 | I915_WRITE_IMR(ring, |
1746 | ~(ring->irq_enable_mask | |
||
4560 | Serge | 1747 | GT_PARITY_ERROR(dev))); |
3031 | serge | 1748 | else |
1749 | I915_WRITE_IMR(ring, ~ring->irq_enable_mask); |
||
5060 | serge | 1750 | gen5_enable_gt_irq(dev_priv, ring->irq_enable_mask); |
2332 | Serge | 1751 | } |
3031 | serge | 1752 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
2332 | Serge | 1753 | |
6084 | serge | 1754 | return true; |
2332 | Serge | 1755 | } |
1756 | |||
1757 | static void |
||
5060 | serge | 1758 | gen6_ring_put_irq(struct intel_engine_cs *ring) |
2332 | Serge | 1759 | { |
1760 | struct drm_device *dev = ring->dev; |
||
5060 | serge | 1761 | struct drm_i915_private *dev_priv = dev->dev_private; |
3031 | serge | 1762 | unsigned long flags; |
2332 | Serge | 1763 | |
3031 | serge | 1764 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
2332 | Serge | 1765 | if (--ring->irq_refcount == 0) { |
4560 | Serge | 1766 | if (HAS_L3_DPF(dev) && ring->id == RCS) |
1767 | I915_WRITE_IMR(ring, ~GT_PARITY_ERROR(dev)); |
||
3031 | serge | 1768 | else |
1769 | I915_WRITE_IMR(ring, ~0); |
||
5060 | serge | 1770 | gen5_disable_gt_irq(dev_priv, ring->irq_enable_mask); |
2332 | Serge | 1771 | } |
3031 | serge | 1772 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
2332 | Serge | 1773 | } |
1774 | |||
4104 | Serge | 1775 | static bool |
5060 | serge | 1776 | hsw_vebox_get_irq(struct intel_engine_cs *ring) |
4104 | Serge | 1777 | { |
1778 | struct drm_device *dev = ring->dev; |
||
1779 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1780 | unsigned long flags; |
||
1781 | |||
5354 | serge | 1782 | if (WARN_ON(!intel_irqs_enabled(dev_priv))) |
4104 | Serge | 1783 | return false; |
1784 | |||
1785 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
1786 | if (ring->irq_refcount++ == 0) { |
||
1787 | I915_WRITE_IMR(ring, ~ring->irq_enable_mask); |
||
5060 | serge | 1788 | gen6_enable_pm_irq(dev_priv, ring->irq_enable_mask); |
4104 | Serge | 1789 | } |
1790 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
||
1791 | |||
1792 | return true; |
||
1793 | } |
||
1794 | |||
1795 | static void |
||
5060 | serge | 1796 | hsw_vebox_put_irq(struct intel_engine_cs *ring) |
4104 | Serge | 1797 | { |
1798 | struct drm_device *dev = ring->dev; |
||
1799 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1800 | unsigned long flags; |
||
1801 | |||
1802 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
1803 | if (--ring->irq_refcount == 0) { |
||
1804 | I915_WRITE_IMR(ring, ~0); |
||
5060 | serge | 1805 | gen6_disable_pm_irq(dev_priv, ring->irq_enable_mask); |
4104 | Serge | 1806 | } |
1807 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
||
1808 | } |
||
1809 | |||
4560 | Serge | 1810 | static bool |
5060 | serge | 1811 | gen8_ring_get_irq(struct intel_engine_cs *ring) |
4560 | Serge | 1812 | { |
1813 | struct drm_device *dev = ring->dev; |
||
1814 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1815 | unsigned long flags; |
||
1816 | |||
5354 | serge | 1817 | if (WARN_ON(!intel_irqs_enabled(dev_priv))) |
4560 | Serge | 1818 | return false; |
1819 | |||
1820 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
1821 | if (ring->irq_refcount++ == 0) { |
||
1822 | if (HAS_L3_DPF(dev) && ring->id == RCS) { |
||
1823 | I915_WRITE_IMR(ring, |
||
1824 | ~(ring->irq_enable_mask | |
||
1825 | GT_RENDER_L3_PARITY_ERROR_INTERRUPT)); |
||
1826 | } else { |
||
1827 | I915_WRITE_IMR(ring, ~ring->irq_enable_mask); |
||
1828 | } |
||
1829 | POSTING_READ(RING_IMR(ring->mmio_base)); |
||
1830 | } |
||
1831 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
||
1832 | |||
1833 | return true; |
||
1834 | } |
||
1835 | |||
1836 | static void |
||
5060 | serge | 1837 | gen8_ring_put_irq(struct intel_engine_cs *ring) |
4560 | Serge | 1838 | { |
1839 | struct drm_device *dev = ring->dev; |
||
1840 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
1841 | unsigned long flags; |
||
1842 | |||
1843 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
||
1844 | if (--ring->irq_refcount == 0) { |
||
1845 | if (HAS_L3_DPF(dev) && ring->id == RCS) { |
||
1846 | I915_WRITE_IMR(ring, |
||
1847 | ~GT_RENDER_L3_PARITY_ERROR_INTERRUPT); |
||
1848 | } else { |
||
1849 | I915_WRITE_IMR(ring, ~0); |
||
1850 | } |
||
1851 | POSTING_READ(RING_IMR(ring->mmio_base)); |
||
1852 | } |
||
1853 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
||
1854 | } |
||
1855 | |||
2332 | Serge | 1856 | static int |
6084 | serge | 1857 | i965_dispatch_execbuffer(struct drm_i915_gem_request *req, |
5060 | serge | 1858 | u64 offset, u32 length, |
6084 | serge | 1859 | unsigned dispatch_flags) |
2332 | Serge | 1860 | { |
6084 | serge | 1861 | struct intel_engine_cs *ring = req->ring; |
2332 | Serge | 1862 | int ret; |
1863 | |||
6084 | serge | 1864 | ret = intel_ring_begin(req, 2); |
2332 | Serge | 1865 | if (ret) |
1866 | return ret; |
||
1867 | |||
1868 | intel_ring_emit(ring, |
||
3031 | serge | 1869 | MI_BATCH_BUFFER_START | |
1870 | MI_BATCH_GTT | |
||
6084 | serge | 1871 | (dispatch_flags & I915_DISPATCH_SECURE ? |
1872 | |||
2332 | Serge | 1873 | intel_ring_emit(ring, offset); |
1874 | intel_ring_advance(ring); |
||
1875 | |||
1876 | return 0; |
||
1877 | } |
||
1878 | |||
3243 | Serge | 1879 | /* Just userspace ABI convention to limit the wa batch bo to a resonable size */ |
1880 | #define I830_BATCH_LIMIT (256*1024) |
||
5128 | serge | 1881 | #define I830_TLB_ENTRIES (2) |
1882 | #define I830_WA_SIZE max(I830_TLB_ENTRIES*4096, I830_BATCH_LIMIT) |
||
2332 | Serge | 1883 | static int |
6084 | serge | 1884 | i830_dispatch_execbuffer(struct drm_i915_gem_request *req, |
1885 | u64 offset, u32 len, |
||
1886 | unsigned dispatch_flags) |
||
2332 | Serge | 1887 | { |
6084 | serge | 1888 | struct intel_engine_cs *ring = req->ring; |
5128 | serge | 1889 | u32 cs_offset = ring->scratch.gtt_offset; |
2332 | Serge | 1890 | int ret; |
1891 | |||
6084 | serge | 1892 | ret = intel_ring_begin(req, 6); |
1893 | if (ret) |
||
1894 | return ret; |
||
2332 | Serge | 1895 | |
5128 | serge | 1896 | /* Evict the invalid PTE TLBs */ |
1897 | intel_ring_emit(ring, COLOR_BLT_CMD | BLT_WRITE_RGBA); |
||
1898 | intel_ring_emit(ring, BLT_DEPTH_32 | BLT_ROP_COLOR_COPY | 4096); |
||
1899 | intel_ring_emit(ring, I830_TLB_ENTRIES << 16 | 4); /* load each page */ |
||
1900 | intel_ring_emit(ring, cs_offset); |
||
1901 | intel_ring_emit(ring, 0xdeadbeef); |
||
6084 | serge | 1902 | intel_ring_emit(ring, MI_NOOP); |
1903 | intel_ring_advance(ring); |
||
3243 | Serge | 1904 | |
6084 | serge | 1905 | if ((dispatch_flags & I915_DISPATCH_PINNED) == 0) { |
3243 | Serge | 1906 | if (len > I830_BATCH_LIMIT) |
1907 | return -ENOSPC; |
||
1908 | |||
6084 | serge | 1909 | ret = intel_ring_begin(req, 6 + 2); |
3243 | Serge | 1910 | if (ret) |
1911 | return ret; |
||
5128 | serge | 1912 | |
1913 | /* Blit the batch (which has now all relocs applied) to the |
||
1914 | * stable batch scratch bo area (so that the CS never |
||
1915 | * stumbles over its tlb invalidation bug) ... |
||
1916 | */ |
||
1917 | intel_ring_emit(ring, SRC_COPY_BLT_CMD | BLT_WRITE_RGBA); |
||
1918 | intel_ring_emit(ring, BLT_DEPTH_32 | BLT_ROP_SRC_COPY | 4096); |
||
5139 | serge | 1919 | intel_ring_emit(ring, DIV_ROUND_UP(len, 4096) << 16 | 4096); |
3243 | Serge | 1920 | intel_ring_emit(ring, cs_offset); |
1921 | intel_ring_emit(ring, 4096); |
||
1922 | intel_ring_emit(ring, offset); |
||
5128 | serge | 1923 | |
3243 | Serge | 1924 | intel_ring_emit(ring, MI_FLUSH); |
5128 | serge | 1925 | intel_ring_emit(ring, MI_NOOP); |
1926 | intel_ring_advance(ring); |
||
3243 | Serge | 1927 | |
1928 | /* ... and execute it. */ |
||
5128 | serge | 1929 | offset = cs_offset; |
1930 | } |
||
1931 | |||
7144 | serge | 1932 | ret = intel_ring_begin(req, 2); |
5128 | serge | 1933 | if (ret) |
1934 | return ret; |
||
1935 | |||
7144 | serge | 1936 | intel_ring_emit(ring, MI_BATCH_BUFFER_START | MI_BATCH_GTT); |
6084 | serge | 1937 | intel_ring_emit(ring, offset | (dispatch_flags & I915_DISPATCH_SECURE ? |
1938 | |||
3031 | serge | 1939 | intel_ring_advance(ring); |
1940 | |||
1941 | return 0; |
||
1942 | } |
||
1943 | |||
1944 | static int |
||
6084 | serge | 1945 | i915_dispatch_execbuffer(struct drm_i915_gem_request *req, |
5060 | serge | 1946 | u64 offset, u32 len, |
6084 | serge | 1947 | unsigned dispatch_flags) |
3031 | serge | 1948 | { |
6084 | serge | 1949 | struct intel_engine_cs *ring = req->ring; |
3031 | serge | 1950 | int ret; |
1951 | |||
6084 | serge | 1952 | ret = intel_ring_begin(req, 2); |
1953 | if (ret) |
||
1954 | return ret; |
||
2332 | Serge | 1955 | |
3031 | serge | 1956 | intel_ring_emit(ring, MI_BATCH_BUFFER_START | MI_BATCH_GTT); |
6084 | serge | 1957 | intel_ring_emit(ring, offset | (dispatch_flags & I915_DISPATCH_SECURE ? |
1958 | |||
2332 | Serge | 1959 | intel_ring_advance(ring); |
1960 | |||
1961 | return 0; |
||
1962 | } |
||
1963 | |||
6660 | serge | 1964 | static void cleanup_phys_status_page(struct intel_engine_cs *ring) |
1965 | { |
||
1966 | struct drm_i915_private *dev_priv = to_i915(ring->dev); |
||
1967 | |||
1968 | if (!dev_priv->status_page_dmah) |
||
1969 | return; |
||
1970 | |||
1971 | drm_pci_free(ring->dev, dev_priv->status_page_dmah); |
||
1972 | ring->status_page.page_addr = NULL; |
||
1973 | } |
||
1974 | |||
5060 | serge | 1975 | static void cleanup_status_page(struct intel_engine_cs *ring) |
2332 | Serge | 1976 | { |
1977 | struct drm_i915_gem_object *obj; |
||
1978 | |||
1979 | obj = ring->status_page.obj; |
||
1980 | if (obj == NULL) |
||
1981 | return; |
||
1982 | |||
5354 | serge | 1983 | kunmap(sg_page(obj->pages->sgl)); |
5060 | serge | 1984 | i915_gem_object_ggtt_unpin(obj); |
2344 | Serge | 1985 | drm_gem_object_unreference(&obj->base); |
2332 | Serge | 1986 | ring->status_page.obj = NULL; |
1987 | } |
||
1988 | |||
5060 | serge | 1989 | static int init_status_page(struct intel_engine_cs *ring) |
2332 | Serge | 1990 | { |
6660 | serge | 1991 | struct drm_i915_gem_object *obj = ring->status_page.obj; |
5060 | serge | 1992 | |
6660 | serge | 1993 | if (obj == NULL) { |
5060 | serge | 1994 | unsigned flags; |
6084 | serge | 1995 | int ret; |
2332 | Serge | 1996 | |
5060 | serge | 1997 | obj = i915_gem_alloc_object(ring->dev, 4096); |
6084 | serge | 1998 | if (obj == NULL) { |
1999 | DRM_ERROR("Failed to allocate status page\n"); |
||
5060 | serge | 2000 | return -ENOMEM; |
6084 | serge | 2001 | } |
2332 | Serge | 2002 | |
6084 | serge | 2003 | ret = i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); |
2004 | if (ret) |
||
2005 | goto err_unref; |
||
2332 | Serge | 2006 | |
5060 | serge | 2007 | flags = 0; |
2008 | if (!HAS_LLC(ring->dev)) |
||
2009 | /* On g33, we cannot place HWS above 256MiB, so |
||
2010 | * restrict its pinning to the low mappable arena. |
||
2011 | * Though this restriction is not documented for |
||
2012 | * gen4, gen5, or byt, they also behave similarly |
||
2013 | * and hang if the HWS is placed at the top of the |
||
2014 | * GTT. To generalise, it appears that all !llc |
||
2015 | * platforms have issues with us placing the HWS |
||
2016 | * above the mappable region (even though we never |
||
2017 | * actualy map it). |
||
2018 | */ |
||
2019 | flags |= PIN_MAPPABLE; |
||
2020 | ret = i915_gem_obj_ggtt_pin(obj, 4096, flags); |
||
2021 | if (ret) { |
||
2022 | err_unref: |
||
2023 | drm_gem_object_unreference(&obj->base); |
||
2024 | return ret; |
||
2025 | } |
||
2026 | |||
2027 | ring->status_page.obj = obj; |
||
2332 | Serge | 2028 | } |
2029 | |||
4104 | Serge | 2030 | ring->status_page.gfx_addr = i915_gem_obj_ggtt_offset(obj); |
5354 | serge | 2031 | ring->status_page.page_addr = kmap(sg_page(obj->pages->sgl)); |
2332 | Serge | 2032 | memset(ring->status_page.page_addr, 0, PAGE_SIZE); |
2033 | |||
2034 | DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n", |
||
2035 | ring->name, ring->status_page.gfx_addr); |
||
2036 | |||
2037 | return 0; |
||
2038 | } |
||
2039 | |||
5060 | serge | 2040 | static int init_phys_status_page(struct intel_engine_cs *ring) |
3243 | Serge | 2041 | { |
6084 | serge | 2042 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
3243 | Serge | 2043 | |
6084 | serge | 2044 | if (!dev_priv->status_page_dmah) { |
2045 | dev_priv->status_page_dmah = |
||
2046 | drm_pci_alloc(ring->dev, PAGE_SIZE, PAGE_SIZE); |
||
2047 | if (!dev_priv->status_page_dmah) |
||
2048 | return -ENOMEM; |
||
2049 | } |
||
3243 | Serge | 2050 | |
6084 | serge | 2051 | ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; |
2052 | memset(ring->status_page.page_addr, 0, PAGE_SIZE); |
||
3243 | Serge | 2053 | |
6084 | serge | 2054 | return 0; |
3243 | Serge | 2055 | } |
2056 | |||
5354 | serge | 2057 | void intel_unpin_ringbuffer_obj(struct intel_ringbuffer *ringbuf) |
2332 | Serge | 2058 | { |
7144 | serge | 2059 | if (HAS_LLC(ringbuf->obj->base.dev) && !ringbuf->obj->stolen) |
2060 | vunmap(ringbuf->virtual_start); |
||
2061 | else |
||
2062 | iounmap(ringbuf->virtual_start); |
||
5354 | serge | 2063 | ringbuf->virtual_start = NULL; |
7144 | serge | 2064 | ringbuf->vma = NULL; |
5060 | serge | 2065 | i915_gem_object_ggtt_unpin(ringbuf->obj); |
2066 | } |
||
2067 | |||
7144 | serge | 2068 | static u32 *vmap_obj(struct drm_i915_gem_object *obj) |
2069 | { |
||
2070 | struct sg_page_iter sg_iter; |
||
2071 | struct page **pages; |
||
2072 | void *addr; |
||
2073 | int i; |
||
2074 | |||
2075 | pages = drm_malloc_ab(obj->base.size >> PAGE_SHIFT, sizeof(*pages)); |
||
2076 | if (pages == NULL) |
||
2077 | return NULL; |
||
2078 | |||
2079 | i = 0; |
||
2080 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) |
||
2081 | pages[i++] = sg_page_iter_page(&sg_iter); |
||
2082 | |||
2083 | addr = vmap(pages, i, 0, PAGE_KERNEL); |
||
2084 | drm_free_large(pages); |
||
2085 | |||
2086 | return addr; |
||
2087 | } |
||
2088 | |||
5354 | serge | 2089 | int intel_pin_and_map_ringbuffer_obj(struct drm_device *dev, |
6084 | serge | 2090 | struct intel_ringbuffer *ringbuf) |
5060 | serge | 2091 | { |
2092 | struct drm_i915_private *dev_priv = to_i915(dev); |
||
5354 | serge | 2093 | struct drm_i915_gem_object *obj = ringbuf->obj; |
6937 | serge | 2094 | /* Ring wraparound at offset 0 sometimes hangs. No idea why. */ |
2095 | unsigned flags = PIN_OFFSET_BIAS | 4096; |
||
2332 | Serge | 2096 | int ret; |
2340 | Serge | 2097 | |
7144 | serge | 2098 | if (HAS_LLC(dev_priv) && !obj->stolen) { |
2099 | ret = i915_gem_obj_ggtt_pin(obj, PAGE_SIZE, flags); |
||
2100 | if (ret) |
||
2101 | return ret; |
||
5354 | serge | 2102 | |
7144 | serge | 2103 | ret = i915_gem_object_set_to_cpu_domain(obj, true); |
2104 | if (ret) { |
||
2105 | i915_gem_object_ggtt_unpin(obj); |
||
2106 | return ret; |
||
2107 | } |
||
5354 | serge | 2108 | |
7144 | serge | 2109 | ringbuf->virtual_start = vmap_obj(obj); |
2110 | if (ringbuf->virtual_start == NULL) { |
||
2111 | i915_gem_object_ggtt_unpin(obj); |
||
2112 | return -ENOMEM; |
||
2113 | } |
||
2114 | } else { |
||
2115 | ret = i915_gem_obj_ggtt_pin(obj, PAGE_SIZE, |
||
2116 | flags | PIN_MAPPABLE); |
||
2117 | if (ret) |
||
2118 | return ret; |
||
2119 | |||
2120 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
||
2121 | if (ret) { |
||
2122 | i915_gem_object_ggtt_unpin(obj); |
||
2123 | return ret; |
||
2124 | } |
||
2125 | |||
2126 | /* Access through the GTT requires the device to be awake. */ |
||
2127 | assert_rpm_wakelock_held(dev_priv); |
||
2128 | |||
2129 | ringbuf->virtual_start = ioremap_wc(dev_priv->gtt.mappable_base + |
||
2130 | i915_gem_obj_ggtt_offset(obj), ringbuf->size); |
||
2131 | if (ringbuf->virtual_start == NULL) { |
||
2132 | i915_gem_object_ggtt_unpin(obj); |
||
2133 | return -EINVAL; |
||
2134 | } |
||
5354 | serge | 2135 | } |
2136 | |||
7144 | serge | 2137 | ringbuf->vma = i915_gem_obj_to_ggtt(obj); |
2138 | |||
6084 | serge | 2139 | return 0; |
5354 | serge | 2140 | } |
2332 | Serge | 2141 | |
6084 | serge | 2142 | static void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf) |
5354 | serge | 2143 | { |
2144 | drm_gem_object_unreference(&ringbuf->obj->base); |
||
2145 | ringbuf->obj = NULL; |
||
2146 | } |
||
2147 | |||
6084 | serge | 2148 | static int intel_alloc_ringbuffer_obj(struct drm_device *dev, |
2149 | struct intel_ringbuffer *ringbuf) |
||
5354 | serge | 2150 | { |
2151 | struct drm_i915_gem_object *obj; |
||
2152 | |||
3480 | Serge | 2153 | obj = NULL; |
4371 | Serge | 2154 | if (!HAS_LLC(dev)) |
5060 | serge | 2155 | obj = i915_gem_object_create_stolen(dev, ringbuf->size); |
3480 | Serge | 2156 | if (obj == NULL) |
5060 | serge | 2157 | obj = i915_gem_alloc_object(dev, ringbuf->size); |
2158 | if (obj == NULL) |
||
2159 | return -ENOMEM; |
||
2332 | Serge | 2160 | |
5060 | serge | 2161 | /* mark ring buffers as read-only from GPU side by default */ |
2162 | obj->gt_ro = 1; |
||
2332 | Serge | 2163 | |
5354 | serge | 2164 | ringbuf->obj = obj; |
2332 | Serge | 2165 | |
5060 | serge | 2166 | return 0; |
2167 | } |
||
2168 | |||
6084 | serge | 2169 | struct intel_ringbuffer * |
2170 | intel_engine_create_ringbuffer(struct intel_engine_cs *engine, int size) |
||
2171 | { |
||
2172 | struct intel_ringbuffer *ring; |
||
2173 | int ret; |
||
2174 | |||
2175 | ring = kzalloc(sizeof(*ring), GFP_KERNEL); |
||
6937 | serge | 2176 | if (ring == NULL) { |
2177 | DRM_DEBUG_DRIVER("Failed to allocate ringbuffer %s\n", |
||
2178 | engine->name); |
||
6084 | serge | 2179 | return ERR_PTR(-ENOMEM); |
6937 | serge | 2180 | } |
6084 | serge | 2181 | |
2182 | ring->ring = engine; |
||
6937 | serge | 2183 | list_add(&ring->link, &engine->buffers); |
6084 | serge | 2184 | |
2185 | ring->size = size; |
||
2186 | /* Workaround an erratum on the i830 which causes a hang if |
||
2187 | * the TAIL pointer points to within the last 2 cachelines |
||
2188 | * of the buffer. |
||
2189 | */ |
||
2190 | ring->effective_size = size; |
||
2191 | if (IS_I830(engine->dev) || IS_845G(engine->dev)) |
||
2192 | ring->effective_size -= 2 * CACHELINE_BYTES; |
||
2193 | |||
2194 | ring->last_retired_head = -1; |
||
2195 | intel_ring_update_space(ring); |
||
2196 | |||
2197 | ret = intel_alloc_ringbuffer_obj(engine->dev, ring); |
||
2198 | if (ret) { |
||
6937 | serge | 2199 | DRM_DEBUG_DRIVER("Failed to allocate ringbuffer %s: %d\n", |
7144 | serge | 2200 | engine->name, ret); |
6937 | serge | 2201 | list_del(&ring->link); |
6084 | serge | 2202 | kfree(ring); |
2203 | return ERR_PTR(ret); |
||
2204 | } |
||
2205 | |||
2206 | return ring; |
||
2207 | } |
||
2208 | |||
2209 | void |
||
2210 | intel_ringbuffer_free(struct intel_ringbuffer *ring) |
||
2211 | { |
||
2212 | intel_destroy_ringbuffer_obj(ring); |
||
6937 | serge | 2213 | list_del(&ring->link); |
6084 | serge | 2214 | kfree(ring); |
2215 | } |
||
2216 | |||
5060 | serge | 2217 | static int intel_init_ring_buffer(struct drm_device *dev, |
2218 | struct intel_engine_cs *ring) |
||
2219 | { |
||
6084 | serge | 2220 | struct intel_ringbuffer *ringbuf; |
5060 | serge | 2221 | int ret; |
2222 | |||
6084 | serge | 2223 | WARN_ON(ring->buffer); |
5060 | serge | 2224 | |
2225 | ring->dev = dev; |
||
2226 | INIT_LIST_HEAD(&ring->active_list); |
||
2227 | INIT_LIST_HEAD(&ring->request_list); |
||
5354 | serge | 2228 | INIT_LIST_HEAD(&ring->execlist_queue); |
6937 | serge | 2229 | INIT_LIST_HEAD(&ring->buffers); |
6084 | serge | 2230 | i915_gem_batch_pool_init(dev, &ring->batch_pool); |
5060 | serge | 2231 | memset(ring->semaphore.sync_seqno, 0, sizeof(ring->semaphore.sync_seqno)); |
2232 | |||
2233 | init_waitqueue_head(&ring->irq_queue); |
||
2234 | |||
6084 | serge | 2235 | ringbuf = intel_engine_create_ringbuffer(ring, 32 * PAGE_SIZE); |
6937 | serge | 2236 | if (IS_ERR(ringbuf)) { |
2237 | ret = PTR_ERR(ringbuf); |
||
2238 | goto error; |
||
2239 | } |
||
6084 | serge | 2240 | ring->buffer = ringbuf; |
2241 | |||
5060 | serge | 2242 | if (I915_NEED_GFX_HWS(dev)) { |
2243 | ret = init_status_page(ring); |
||
2244 | if (ret) |
||
2245 | goto error; |
||
2246 | } else { |
||
6660 | serge | 2247 | WARN_ON(ring->id != RCS); |
5060 | serge | 2248 | ret = init_phys_status_page(ring); |
6084 | serge | 2249 | if (ret) |
5060 | serge | 2250 | goto error; |
2251 | } |
||
2332 | Serge | 2252 | |
6084 | serge | 2253 | ret = intel_pin_and_map_ringbuffer_obj(dev, ringbuf); |
5060 | serge | 2254 | if (ret) { |
6084 | serge | 2255 | DRM_ERROR("Failed to pin and map ringbuffer %s: %d\n", |
2256 | ring->name, ret); |
||
2257 | intel_destroy_ringbuffer_obj(ringbuf); |
||
5060 | serge | 2258 | goto error; |
2259 | } |
||
2260 | |||
2261 | ret = i915_cmd_parser_init_ring(ring); |
||
2262 | if (ret) |
||
2263 | goto error; |
||
2264 | |||
2332 | Serge | 2265 | return 0; |
2266 | |||
5060 | serge | 2267 | error: |
6937 | serge | 2268 | intel_cleanup_ring_buffer(ring); |
2332 | Serge | 2269 | return ret; |
2270 | } |
||
2271 | |||
5060 | serge | 2272 | void intel_cleanup_ring_buffer(struct intel_engine_cs *ring) |
2332 | Serge | 2273 | { |
5354 | serge | 2274 | struct drm_i915_private *dev_priv; |
2332 | Serge | 2275 | |
5060 | serge | 2276 | if (!intel_ring_initialized(ring)) |
2332 | Serge | 2277 | return; |
2278 | |||
5354 | serge | 2279 | dev_priv = to_i915(ring->dev); |
2280 | |||
6937 | serge | 2281 | if (ring->buffer) { |
7144 | serge | 2282 | intel_stop_ring_buffer(ring); |
2283 | WARN_ON(!IS_GEN2(ring->dev) && (I915_READ_MODE(ring) & MODE_IDLE) == 0); |
||
2332 | Serge | 2284 | |
7144 | serge | 2285 | intel_unpin_ringbuffer_obj(ring->buffer); |
2286 | intel_ringbuffer_free(ring->buffer); |
||
2287 | ring->buffer = NULL; |
||
6937 | serge | 2288 | } |
2332 | Serge | 2289 | |
2290 | if (ring->cleanup) |
||
2291 | ring->cleanup(ring); |
||
2292 | |||
6660 | serge | 2293 | if (I915_NEED_GFX_HWS(ring->dev)) { |
7144 | serge | 2294 | cleanup_status_page(ring); |
6660 | serge | 2295 | } else { |
2296 | WARN_ON(ring->id != RCS); |
||
2297 | cleanup_phys_status_page(ring); |
||
2298 | } |
||
2332 | Serge | 2299 | |
5060 | serge | 2300 | i915_cmd_parser_fini_ring(ring); |
6084 | serge | 2301 | i915_gem_batch_pool_fini(&ring->batch_pool); |
6937 | serge | 2302 | ring->dev = NULL; |
3031 | serge | 2303 | } |
2304 | |||
6084 | serge | 2305 | static int ring_wait_for_space(struct intel_engine_cs *ring, int n) |
3031 | serge | 2306 | { |
5060 | serge | 2307 | struct intel_ringbuffer *ringbuf = ring->buffer; |
3031 | serge | 2308 | struct drm_i915_gem_request *request; |
6084 | serge | 2309 | unsigned space; |
3031 | serge | 2310 | int ret; |
2311 | |||
6084 | serge | 2312 | if (intel_ring_space(ringbuf) >= n) |
2313 | return 0; |
||
3031 | serge | 2314 | |
6084 | serge | 2315 | /* The whole point of reserving space is to not wait! */ |
2316 | WARN_ON(ringbuf->reserved_in_use); |
||
2332 | Serge | 2317 | |
3031 | serge | 2318 | list_for_each_entry(request, &ring->request_list, list) { |
6084 | serge | 2319 | space = __intel_ring_space(request->postfix, ringbuf->tail, |
2320 | ringbuf->size); |
||
2321 | if (space >= n) |
||
3031 | serge | 2322 | break; |
2323 | } |
||
2324 | |||
6084 | serge | 2325 | if (WARN_ON(&request->list == &ring->request_list)) |
3031 | serge | 2326 | return -ENOSPC; |
2327 | |||
6084 | serge | 2328 | ret = i915_wait_request(request); |
3031 | serge | 2329 | if (ret) |
2330 | return ret; |
||
2331 | |||
6084 | serge | 2332 | ringbuf->space = space; |
3031 | serge | 2333 | return 0; |
2334 | } |
||
2335 | |||
6084 | serge | 2336 | static void __wrap_ring_buffer(struct intel_ringbuffer *ringbuf) |
3031 | serge | 2337 | { |
3243 | Serge | 2338 | uint32_t __iomem *virt; |
5060 | serge | 2339 | int rem = ringbuf->size - ringbuf->tail; |
3243 | Serge | 2340 | |
5060 | serge | 2341 | virt = ringbuf->virtual_start + ringbuf->tail; |
3243 | Serge | 2342 | rem /= 4; |
2343 | while (rem--) |
||
2344 | iowrite32(MI_NOOP, virt++); |
||
2345 | |||
5060 | serge | 2346 | ringbuf->tail = 0; |
6084 | serge | 2347 | intel_ring_update_space(ringbuf); |
3243 | Serge | 2348 | } |
2349 | |||
5060 | serge | 2350 | int intel_ring_idle(struct intel_engine_cs *ring) |
3243 | Serge | 2351 | { |
6084 | serge | 2352 | struct drm_i915_gem_request *req; |
3243 | Serge | 2353 | |
2354 | /* Wait upon the last request to be completed */ |
||
2355 | if (list_empty(&ring->request_list)) |
||
2356 | return 0; |
||
2357 | |||
6084 | serge | 2358 | req = list_entry(ring->request_list.prev, |
2359 | struct drm_i915_gem_request, |
||
2360 | list); |
||
3243 | Serge | 2361 | |
6084 | serge | 2362 | /* Make sure we do not trigger any retires */ |
2363 | return __i915_wait_request(req, |
||
2364 | atomic_read(&to_i915(ring->dev)->gpu_error.reset_counter), |
||
2365 | to_i915(ring->dev)->mm.interruptible, |
||
2366 | NULL, NULL); |
||
3243 | Serge | 2367 | } |
2368 | |||
6084 | serge | 2369 | int intel_ring_alloc_request_extras(struct drm_i915_gem_request *request) |
3243 | Serge | 2370 | { |
6084 | serge | 2371 | request->ringbuf = request->ring->buffer; |
2372 | return 0; |
||
2373 | } |
||
3243 | Serge | 2374 | |
6084 | serge | 2375 | int intel_ring_reserve_space(struct drm_i915_gem_request *request) |
2376 | { |
||
2377 | /* |
||
2378 | * The first call merely notes the reserve request and is common for |
||
2379 | * all back ends. The subsequent localised _begin() call actually |
||
2380 | * ensures that the reservation is available. Without the begin, if |
||
2381 | * the request creator immediately submitted the request without |
||
2382 | * adding any commands to it then there might not actually be |
||
2383 | * sufficient room for the submission commands. |
||
2384 | */ |
||
2385 | intel_ring_reserved_space_reserve(request->ringbuf, MIN_SPACE_FOR_ADD_REQUEST); |
||
4560 | Serge | 2386 | |
6084 | serge | 2387 | return intel_ring_begin(request, 0); |
2388 | } |
||
4560 | Serge | 2389 | |
6084 | serge | 2390 | void intel_ring_reserved_space_reserve(struct intel_ringbuffer *ringbuf, int size) |
2391 | { |
||
2392 | WARN_ON(ringbuf->reserved_size); |
||
2393 | WARN_ON(ringbuf->reserved_in_use); |
||
2394 | |||
2395 | ringbuf->reserved_size = size; |
||
2396 | } |
||
2397 | |||
2398 | void intel_ring_reserved_space_cancel(struct intel_ringbuffer *ringbuf) |
||
2399 | { |
||
2400 | WARN_ON(ringbuf->reserved_in_use); |
||
2401 | |||
2402 | ringbuf->reserved_size = 0; |
||
2403 | ringbuf->reserved_in_use = false; |
||
2404 | } |
||
2405 | |||
2406 | void intel_ring_reserved_space_use(struct intel_ringbuffer *ringbuf) |
||
2407 | { |
||
2408 | WARN_ON(ringbuf->reserved_in_use); |
||
2409 | |||
2410 | ringbuf->reserved_in_use = true; |
||
2411 | ringbuf->reserved_tail = ringbuf->tail; |
||
2412 | } |
||
2413 | |||
2414 | void intel_ring_reserved_space_end(struct intel_ringbuffer *ringbuf) |
||
2415 | { |
||
2416 | WARN_ON(!ringbuf->reserved_in_use); |
||
2417 | if (ringbuf->tail > ringbuf->reserved_tail) { |
||
2418 | WARN(ringbuf->tail > ringbuf->reserved_tail + ringbuf->reserved_size, |
||
2419 | "request reserved size too small: %d vs %d!\n", |
||
2420 | ringbuf->tail - ringbuf->reserved_tail, ringbuf->reserved_size); |
||
2421 | } else { |
||
2422 | /* |
||
2423 | * The ring was wrapped while the reserved space was in use. |
||
2424 | * That means that some unknown amount of the ring tail was |
||
2425 | * no-op filled and skipped. Thus simply adding the ring size |
||
2426 | * to the tail and doing the above space check will not work. |
||
2427 | * Rather than attempt to track how much tail was skipped, |
||
2428 | * it is much simpler to say that also skipping the sanity |
||
2429 | * check every once in a while is not a big issue. |
||
2430 | */ |
||
4560 | Serge | 2431 | } |
2432 | |||
6084 | serge | 2433 | ringbuf->reserved_size = 0; |
2434 | ringbuf->reserved_in_use = false; |
||
3243 | Serge | 2435 | } |
2436 | |||
6084 | serge | 2437 | static int __intel_ring_prepare(struct intel_engine_cs *ring, int bytes) |
3480 | Serge | 2438 | { |
5060 | serge | 2439 | struct intel_ringbuffer *ringbuf = ring->buffer; |
6084 | serge | 2440 | int remain_usable = ringbuf->effective_size - ringbuf->tail; |
2441 | int remain_actual = ringbuf->size - ringbuf->tail; |
||
2442 | int ret, total_bytes, wait_bytes = 0; |
||
2443 | bool need_wrap = false; |
||
3480 | Serge | 2444 | |
6084 | serge | 2445 | if (ringbuf->reserved_in_use) |
2446 | total_bytes = bytes; |
||
2447 | else |
||
2448 | total_bytes = bytes + ringbuf->reserved_size; |
||
2449 | |||
2450 | if (unlikely(bytes > remain_usable)) { |
||
2451 | /* |
||
2452 | * Not enough space for the basic request. So need to flush |
||
2453 | * out the remainder and then wait for base + reserved. |
||
2454 | */ |
||
2455 | wait_bytes = remain_actual + total_bytes; |
||
2456 | need_wrap = true; |
||
2457 | } else { |
||
2458 | if (unlikely(total_bytes > remain_usable)) { |
||
2459 | /* |
||
2460 | * The base request will fit but the reserved space |
||
6660 | serge | 2461 | * falls off the end. So don't need an immediate wrap |
2462 | * and only need to effectively wait for the reserved |
||
2463 | * size space from the start of ringbuffer. |
||
6084 | serge | 2464 | */ |
2465 | wait_bytes = remain_actual + ringbuf->reserved_size; |
||
2466 | } else if (total_bytes > ringbuf->space) { |
||
2467 | /* No wrapping required, just waiting. */ |
||
2468 | wait_bytes = total_bytes; |
||
2469 | } |
||
3480 | Serge | 2470 | } |
2471 | |||
6084 | serge | 2472 | if (wait_bytes) { |
2473 | ret = ring_wait_for_space(ring, wait_bytes); |
||
3480 | Serge | 2474 | if (unlikely(ret)) |
2475 | return ret; |
||
6084 | serge | 2476 | |
2477 | if (need_wrap) |
||
2478 | __wrap_ring_buffer(ringbuf); |
||
3480 | Serge | 2479 | } |
2480 | |||
2481 | return 0; |
||
2482 | } |
||
2483 | |||
6084 | serge | 2484 | int intel_ring_begin(struct drm_i915_gem_request *req, |
2332 | Serge | 2485 | int num_dwords) |
2486 | { |
||
6084 | serge | 2487 | struct intel_engine_cs *ring; |
2488 | struct drm_i915_private *dev_priv; |
||
2332 | Serge | 2489 | int ret; |
2490 | |||
6084 | serge | 2491 | WARN_ON(req == NULL); |
2492 | ring = req->ring; |
||
2493 | dev_priv = ring->dev->dev_private; |
||
2494 | |||
3480 | Serge | 2495 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, |
2496 | dev_priv->mm.interruptible); |
||
3031 | serge | 2497 | if (ret) |
2498 | return ret; |
||
2332 | Serge | 2499 | |
4560 | Serge | 2500 | ret = __intel_ring_prepare(ring, num_dwords * sizeof(uint32_t)); |
2501 | if (ret) |
||
2502 | return ret; |
||
2503 | |||
5060 | serge | 2504 | ring->buffer->space -= num_dwords * sizeof(uint32_t); |
4560 | Serge | 2505 | return 0; |
3480 | Serge | 2506 | } |
2332 | Serge | 2507 | |
5060 | serge | 2508 | /* Align the ring tail to a cacheline boundary */ |
6084 | serge | 2509 | int intel_ring_cacheline_align(struct drm_i915_gem_request *req) |
3480 | Serge | 2510 | { |
6084 | serge | 2511 | struct intel_engine_cs *ring = req->ring; |
5060 | serge | 2512 | int num_dwords = (ring->buffer->tail & (CACHELINE_BYTES - 1)) / sizeof(uint32_t); |
2513 | int ret; |
||
3480 | Serge | 2514 | |
5060 | serge | 2515 | if (num_dwords == 0) |
2516 | return 0; |
||
2517 | |||
2518 | num_dwords = CACHELINE_BYTES / sizeof(uint32_t) - num_dwords; |
||
6084 | serge | 2519 | ret = intel_ring_begin(req, num_dwords); |
5060 | serge | 2520 | if (ret) |
2521 | return ret; |
||
2522 | |||
2523 | while (num_dwords--) |
||
2524 | intel_ring_emit(ring, MI_NOOP); |
||
2525 | |||
2526 | intel_ring_advance(ring); |
||
2527 | |||
2528 | return 0; |
||
2529 | } |
||
2530 | |||
2531 | void intel_ring_init_seqno(struct intel_engine_cs *ring, u32 seqno) |
||
2532 | { |
||
2533 | struct drm_device *dev = ring->dev; |
||
2534 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2535 | |||
2536 | if (INTEL_INFO(dev)->gen == 6 || INTEL_INFO(dev)->gen == 7) { |
||
3480 | Serge | 2537 | I915_WRITE(RING_SYNC_0(ring->mmio_base), 0); |
2538 | I915_WRITE(RING_SYNC_1(ring->mmio_base), 0); |
||
5060 | serge | 2539 | if (HAS_VEBOX(dev)) |
4104 | Serge | 2540 | I915_WRITE(RING_SYNC_2(ring->mmio_base), 0); |
2332 | Serge | 2541 | } |
2542 | |||
3480 | Serge | 2543 | ring->set_seqno(ring, seqno); |
4104 | Serge | 2544 | ring->hangcheck.seqno = seqno; |
2332 | Serge | 2545 | } |
2546 | |||
5060 | serge | 2547 | static void gen6_bsd_ring_write_tail(struct intel_engine_cs *ring, |
2332 | Serge | 2548 | u32 value) |
2549 | { |
||
5060 | serge | 2550 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
2332 | Serge | 2551 | |
2552 | /* Every tail move must follow the sequence below */ |
||
3031 | serge | 2553 | |
2554 | /* Disable notification that the ring is IDLE. The GT |
||
2555 | * will then assume that it is busy and bring it out of rc6. |
||
2556 | */ |
||
6084 | serge | 2557 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, |
3031 | serge | 2558 | _MASKED_BIT_ENABLE(GEN6_BSD_SLEEP_MSG_DISABLE)); |
2332 | Serge | 2559 | |
3031 | serge | 2560 | /* Clear the context id. Here be magic! */ |
2561 | I915_WRITE64(GEN6_BSD_RNCID, 0x0); |
||
2562 | |||
2563 | /* Wait for the ring not to be idle, i.e. for it to wake up. */ |
||
6084 | serge | 2564 | if (wait_for((I915_READ(GEN6_BSD_SLEEP_PSMI_CONTROL) & |
3031 | serge | 2565 | GEN6_BSD_SLEEP_INDICATOR) == 0, |
6084 | serge | 2566 | 50)) |
3031 | serge | 2567 | DRM_ERROR("timed out waiting for the BSD ring to wake up\n"); |
2332 | Serge | 2568 | |
3031 | serge | 2569 | /* Now that the ring is fully powered up, update the tail */ |
6084 | serge | 2570 | I915_WRITE_TAIL(ring, value); |
3031 | serge | 2571 | POSTING_READ(RING_TAIL(ring->mmio_base)); |
2572 | |||
2573 | /* Let the ring send IDLE messages to the GT again, |
||
2574 | * and so let it sleep to conserve power when idle. |
||
2575 | */ |
||
6084 | serge | 2576 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, |
3031 | serge | 2577 | _MASKED_BIT_DISABLE(GEN6_BSD_SLEEP_MSG_DISABLE)); |
2332 | Serge | 2578 | } |
2579 | |||
6084 | serge | 2580 | static int gen6_bsd_ring_flush(struct drm_i915_gem_request *req, |
2581 | u32 invalidate, u32 flush) |
||
2332 | Serge | 2582 | { |
6084 | serge | 2583 | struct intel_engine_cs *ring = req->ring; |
2332 | Serge | 2584 | uint32_t cmd; |
2585 | int ret; |
||
2586 | |||
6084 | serge | 2587 | ret = intel_ring_begin(req, 4); |
2332 | Serge | 2588 | if (ret) |
2589 | return ret; |
||
2590 | |||
2591 | cmd = MI_FLUSH_DW; |
||
4560 | Serge | 2592 | if (INTEL_INFO(ring->dev)->gen >= 8) |
2593 | cmd += 1; |
||
6084 | serge | 2594 | |
2595 | /* We always require a command barrier so that subsequent |
||
2596 | * commands, such as breadcrumb interrupts, are strictly ordered |
||
2597 | * wrt the contents of the write cache being flushed to memory |
||
2598 | * (and thus being coherent from the CPU). |
||
2599 | */ |
||
2600 | cmd |= MI_FLUSH_DW_STORE_INDEX | MI_FLUSH_DW_OP_STOREDW; |
||
2601 | |||
3243 | Serge | 2602 | /* |
2603 | * Bspec vol 1c.5 - video engine command streamer: |
||
2604 | * "If ENABLED, all TLBs will be invalidated once the flush |
||
2605 | * operation is complete. This bit is only valid when the |
||
2606 | * Post-Sync Operation field is a value of 1h or 3h." |
||
2607 | */ |
||
2332 | Serge | 2608 | if (invalidate & I915_GEM_GPU_DOMAINS) |
6084 | serge | 2609 | cmd |= MI_INVALIDATE_TLB | MI_INVALIDATE_BSD; |
2610 | |||
2332 | Serge | 2611 | intel_ring_emit(ring, cmd); |
3243 | Serge | 2612 | intel_ring_emit(ring, I915_GEM_HWS_SCRATCH_ADDR | MI_FLUSH_DW_USE_GTT); |
4560 | Serge | 2613 | if (INTEL_INFO(ring->dev)->gen >= 8) { |
2614 | intel_ring_emit(ring, 0); /* upper addr */ |
||
2615 | intel_ring_emit(ring, 0); /* value */ |
||
2616 | } else { |
||
6084 | serge | 2617 | intel_ring_emit(ring, 0); |
2618 | intel_ring_emit(ring, MI_NOOP); |
||
4560 | Serge | 2619 | } |
2332 | Serge | 2620 | intel_ring_advance(ring); |
2621 | return 0; |
||
2622 | } |
||
2623 | |||
2624 | static int |
||
6084 | serge | 2625 | gen8_ring_dispatch_execbuffer(struct drm_i915_gem_request *req, |
5060 | serge | 2626 | u64 offset, u32 len, |
6084 | serge | 2627 | unsigned dispatch_flags) |
4560 | Serge | 2628 | { |
6084 | serge | 2629 | struct intel_engine_cs *ring = req->ring; |
2630 | bool ppgtt = USES_PPGTT(ring->dev) && |
||
2631 | !(dispatch_flags & I915_DISPATCH_SECURE); |
||
4560 | Serge | 2632 | int ret; |
2633 | |||
6084 | serge | 2634 | ret = intel_ring_begin(req, 4); |
4560 | Serge | 2635 | if (ret) |
2636 | return ret; |
||
2637 | |||
2638 | /* FIXME(BDW): Address space and security selectors. */ |
||
6084 | serge | 2639 | intel_ring_emit(ring, MI_BATCH_BUFFER_START_GEN8 | (ppgtt<<8) | |
2640 | (dispatch_flags & I915_DISPATCH_RS ? |
||
2641 | MI_BATCH_RESOURCE_STREAMER : 0)); |
||
5060 | serge | 2642 | intel_ring_emit(ring, lower_32_bits(offset)); |
2643 | intel_ring_emit(ring, upper_32_bits(offset)); |
||
4560 | Serge | 2644 | intel_ring_emit(ring, MI_NOOP); |
2645 | intel_ring_advance(ring); |
||
2646 | |||
2647 | return 0; |
||
2648 | } |
||
2649 | |||
2650 | static int |
||
6084 | serge | 2651 | hsw_ring_dispatch_execbuffer(struct drm_i915_gem_request *req, |
2652 | u64 offset, u32 len, |
||
2653 | unsigned dispatch_flags) |
||
3243 | Serge | 2654 | { |
6084 | serge | 2655 | struct intel_engine_cs *ring = req->ring; |
3243 | Serge | 2656 | int ret; |
2657 | |||
6084 | serge | 2658 | ret = intel_ring_begin(req, 2); |
3243 | Serge | 2659 | if (ret) |
2660 | return ret; |
||
2661 | |||
2662 | intel_ring_emit(ring, |
||
5354 | serge | 2663 | MI_BATCH_BUFFER_START | |
6084 | serge | 2664 | (dispatch_flags & I915_DISPATCH_SECURE ? |
2665 | |||
2666 | (dispatch_flags & I915_DISPATCH_RS ? |
||
2667 | MI_BATCH_RESOURCE_STREAMER : 0)); |
||
3243 | Serge | 2668 | /* bit0-7 is the length on GEN6+ */ |
2669 | intel_ring_emit(ring, offset); |
||
2670 | intel_ring_advance(ring); |
||
2671 | |||
2672 | return 0; |
||
2673 | } |
||
2674 | |||
2675 | static int |
||
6084 | serge | 2676 | gen6_ring_dispatch_execbuffer(struct drm_i915_gem_request *req, |
5060 | serge | 2677 | u64 offset, u32 len, |
6084 | serge | 2678 | unsigned dispatch_flags) |
2332 | Serge | 2679 | { |
6084 | serge | 2680 | struct intel_engine_cs *ring = req->ring; |
2681 | int ret; |
||
2332 | Serge | 2682 | |
6084 | serge | 2683 | ret = intel_ring_begin(req, 2); |
2684 | if (ret) |
||
2685 | return ret; |
||
2332 | Serge | 2686 | |
3243 | Serge | 2687 | intel_ring_emit(ring, |
2688 | MI_BATCH_BUFFER_START | |
||
6084 | serge | 2689 | (dispatch_flags & I915_DISPATCH_SECURE ? |
2690 | |||
2691 | /* bit0-7 is the length on GEN6+ */ |
||
2692 | intel_ring_emit(ring, offset); |
||
2693 | intel_ring_advance(ring); |
||
2332 | Serge | 2694 | |
6084 | serge | 2695 | return 0; |
2332 | Serge | 2696 | } |
2697 | |||
2698 | /* Blitter support (SandyBridge+) */ |
||
2699 | |||
6084 | serge | 2700 | static int gen6_ring_flush(struct drm_i915_gem_request *req, |
2701 | u32 invalidate, u32 flush) |
||
2332 | Serge | 2702 | { |
6084 | serge | 2703 | struct intel_engine_cs *ring = req->ring; |
4104 | Serge | 2704 | struct drm_device *dev = ring->dev; |
2332 | Serge | 2705 | uint32_t cmd; |
2706 | int ret; |
||
2707 | |||
6084 | serge | 2708 | ret = intel_ring_begin(req, 4); |
2332 | Serge | 2709 | if (ret) |
2710 | return ret; |
||
2711 | |||
2712 | cmd = MI_FLUSH_DW; |
||
6084 | serge | 2713 | if (INTEL_INFO(dev)->gen >= 8) |
4560 | Serge | 2714 | cmd += 1; |
6084 | serge | 2715 | |
2716 | /* We always require a command barrier so that subsequent |
||
2717 | * commands, such as breadcrumb interrupts, are strictly ordered |
||
2718 | * wrt the contents of the write cache being flushed to memory |
||
2719 | * (and thus being coherent from the CPU). |
||
2720 | */ |
||
2721 | cmd |= MI_FLUSH_DW_STORE_INDEX | MI_FLUSH_DW_OP_STOREDW; |
||
2722 | |||
3243 | Serge | 2723 | /* |
2724 | * Bspec vol 1c.3 - blitter engine command streamer: |
||
2725 | * "If ENABLED, all TLBs will be invalidated once the flush |
||
2726 | * operation is complete. This bit is only valid when the |
||
2727 | * Post-Sync Operation field is a value of 1h or 3h." |
||
2728 | */ |
||
2332 | Serge | 2729 | if (invalidate & I915_GEM_DOMAIN_RENDER) |
6084 | serge | 2730 | cmd |= MI_INVALIDATE_TLB; |
2332 | Serge | 2731 | intel_ring_emit(ring, cmd); |
3243 | Serge | 2732 | intel_ring_emit(ring, I915_GEM_HWS_SCRATCH_ADDR | MI_FLUSH_DW_USE_GTT); |
6084 | serge | 2733 | if (INTEL_INFO(dev)->gen >= 8) { |
4560 | Serge | 2734 | intel_ring_emit(ring, 0); /* upper addr */ |
2735 | intel_ring_emit(ring, 0); /* value */ |
||
2736 | } else { |
||
6084 | serge | 2737 | intel_ring_emit(ring, 0); |
2738 | intel_ring_emit(ring, MI_NOOP); |
||
4560 | Serge | 2739 | } |
2332 | Serge | 2740 | intel_ring_advance(ring); |
4104 | Serge | 2741 | |
2332 | Serge | 2742 | return 0; |
2743 | } |
||
2744 | |||
2745 | int intel_init_render_ring_buffer(struct drm_device *dev) |
||
2746 | { |
||
5060 | serge | 2747 | struct drm_i915_private *dev_priv = dev->dev_private; |
2748 | struct intel_engine_cs *ring = &dev_priv->ring[RCS]; |
||
2749 | struct drm_i915_gem_object *obj; |
||
2750 | int ret; |
||
2340 | Serge | 2751 | |
3031 | serge | 2752 | ring->name = "render ring"; |
2753 | ring->id = RCS; |
||
7144 | serge | 2754 | ring->exec_id = I915_EXEC_RENDER; |
3031 | serge | 2755 | ring->mmio_base = RENDER_RING_BASE; |
2756 | |||
5060 | serge | 2757 | if (INTEL_INFO(dev)->gen >= 8) { |
2758 | if (i915_semaphore_is_enabled(dev)) { |
||
2759 | obj = i915_gem_alloc_object(dev, 4096); |
||
2760 | if (obj == NULL) { |
||
2761 | DRM_ERROR("Failed to allocate semaphore bo. Disabling semaphores\n"); |
||
2762 | i915.semaphores = 0; |
||
2763 | } else { |
||
2764 | i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); |
||
2765 | ret = i915_gem_obj_ggtt_pin(obj, 0, PIN_NONBLOCK); |
||
2766 | if (ret != 0) { |
||
2767 | drm_gem_object_unreference(&obj->base); |
||
2768 | DRM_ERROR("Failed to pin semaphore bo. Disabling semaphores\n"); |
||
2769 | i915.semaphores = 0; |
||
2770 | } else |
||
2771 | dev_priv->semaphore_obj = obj; |
||
2772 | } |
||
2773 | } |
||
5354 | serge | 2774 | |
6084 | serge | 2775 | ring->init_context = intel_rcs_ctx_init; |
5060 | serge | 2776 | ring->add_request = gen6_add_request; |
2777 | ring->flush = gen8_render_ring_flush; |
||
2778 | ring->irq_get = gen8_ring_get_irq; |
||
2779 | ring->irq_put = gen8_ring_put_irq; |
||
2780 | ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT; |
||
2781 | ring->get_seqno = gen6_ring_get_seqno; |
||
2782 | ring->set_seqno = ring_set_seqno; |
||
2783 | if (i915_semaphore_is_enabled(dev)) { |
||
2784 | WARN_ON(!dev_priv->semaphore_obj); |
||
2785 | ring->semaphore.sync_to = gen8_ring_sync; |
||
2786 | ring->semaphore.signal = gen8_rcs_signal; |
||
2787 | GEN8_RING_SEMAPHORE_INIT; |
||
2788 | } |
||
2789 | } else if (INTEL_INFO(dev)->gen >= 6) { |
||
6084 | serge | 2790 | ring->init_context = intel_rcs_ctx_init; |
2791 | ring->add_request = gen6_add_request; |
||
3031 | serge | 2792 | ring->flush = gen7_render_ring_flush; |
2793 | if (INTEL_INFO(dev)->gen == 6) |
||
6084 | serge | 2794 | ring->flush = gen6_render_ring_flush; |
3031 | serge | 2795 | ring->irq_get = gen6_ring_get_irq; |
2796 | ring->irq_put = gen6_ring_put_irq; |
||
4104 | Serge | 2797 | ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT; |
2342 | Serge | 2798 | ring->get_seqno = gen6_ring_get_seqno; |
3480 | Serge | 2799 | ring->set_seqno = ring_set_seqno; |
5060 | serge | 2800 | if (i915_semaphore_is_enabled(dev)) { |
6084 | serge | 2801 | ring->semaphore.sync_to = gen6_ring_sync; |
2802 | ring->semaphore.signal = gen6_signal; |
||
2803 | /* |
||
5060 | serge | 2804 | * The current semaphore is only applied on pre-gen8 |
2805 | * platform. And there is no VCS2 ring on the pre-gen8 |
||
2806 | * platform. So the semaphore between RCS and VCS2 is |
||
2807 | * initialized as INVALID. Gen8 will initialize the |
||
2808 | * sema between VCS2 and RCS later. |
||
6084 | serge | 2809 | */ |
2810 | ring->semaphore.mbox.wait[RCS] = MI_SEMAPHORE_SYNC_INVALID; |
||
2811 | ring->semaphore.mbox.wait[VCS] = MI_SEMAPHORE_SYNC_RV; |
||
2812 | ring->semaphore.mbox.wait[BCS] = MI_SEMAPHORE_SYNC_RB; |
||
2813 | ring->semaphore.mbox.wait[VECS] = MI_SEMAPHORE_SYNC_RVE; |
||
2814 | ring->semaphore.mbox.wait[VCS2] = MI_SEMAPHORE_SYNC_INVALID; |
||
2815 | ring->semaphore.mbox.signal[RCS] = GEN6_NOSYNC; |
||
2816 | ring->semaphore.mbox.signal[VCS] = GEN6_VRSYNC; |
||
2817 | ring->semaphore.mbox.signal[BCS] = GEN6_BRSYNC; |
||
2818 | ring->semaphore.mbox.signal[VECS] = GEN6_VERSYNC; |
||
2819 | ring->semaphore.mbox.signal[VCS2] = GEN6_NOSYNC; |
||
5060 | serge | 2820 | } |
2332 | Serge | 2821 | } else if (IS_GEN5(dev)) { |
6084 | serge | 2822 | ring->add_request = pc_render_add_request; |
3031 | serge | 2823 | ring->flush = gen4_render_ring_flush; |
2342 | Serge | 2824 | ring->get_seqno = pc_render_get_seqno; |
3480 | Serge | 2825 | ring->set_seqno = pc_render_set_seqno; |
3031 | serge | 2826 | ring->irq_get = gen5_ring_get_irq; |
2827 | ring->irq_put = gen5_ring_put_irq; |
||
4104 | Serge | 2828 | ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT | |
2829 | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT; |
||
3031 | serge | 2830 | } else { |
2831 | ring->add_request = i9xx_add_request; |
||
2832 | if (INTEL_INFO(dev)->gen < 4) |
||
2833 | ring->flush = gen2_render_ring_flush; |
||
2834 | else |
||
2835 | ring->flush = gen4_render_ring_flush; |
||
2836 | ring->get_seqno = ring_get_seqno; |
||
3480 | Serge | 2837 | ring->set_seqno = ring_set_seqno; |
3031 | serge | 2838 | if (IS_GEN2(dev)) { |
2839 | ring->irq_get = i8xx_ring_get_irq; |
||
2840 | ring->irq_put = i8xx_ring_put_irq; |
||
2841 | } else { |
||
2842 | ring->irq_get = i9xx_ring_get_irq; |
||
2843 | ring->irq_put = i9xx_ring_put_irq; |
||
2844 | } |
||
2845 | ring->irq_enable_mask = I915_USER_INTERRUPT; |
||
2332 | Serge | 2846 | } |
3031 | serge | 2847 | ring->write_tail = ring_write_tail; |
5060 | serge | 2848 | |
3243 | Serge | 2849 | if (IS_HASWELL(dev)) |
2850 | ring->dispatch_execbuffer = hsw_ring_dispatch_execbuffer; |
||
4560 | Serge | 2851 | else if (IS_GEN8(dev)) |
2852 | ring->dispatch_execbuffer = gen8_ring_dispatch_execbuffer; |
||
3243 | Serge | 2853 | else if (INTEL_INFO(dev)->gen >= 6) |
3031 | serge | 2854 | ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer; |
2855 | else if (INTEL_INFO(dev)->gen >= 4) |
||
2856 | ring->dispatch_execbuffer = i965_dispatch_execbuffer; |
||
2857 | else if (IS_I830(dev) || IS_845G(dev)) |
||
2858 | ring->dispatch_execbuffer = i830_dispatch_execbuffer; |
||
2859 | else |
||
2860 | ring->dispatch_execbuffer = i915_dispatch_execbuffer; |
||
6084 | serge | 2861 | ring->init_hw = init_render_ring; |
3031 | serge | 2862 | ring->cleanup = render_ring_cleanup; |
2332 | Serge | 2863 | |
3243 | Serge | 2864 | /* Workaround batchbuffer to combat CS tlb bug. */ |
2865 | if (HAS_BROKEN_CS_TLB(dev)) { |
||
5128 | serge | 2866 | obj = i915_gem_alloc_object(dev, I830_WA_SIZE); |
3243 | Serge | 2867 | if (obj == NULL) { |
2868 | DRM_ERROR("Failed to allocate batch bo\n"); |
||
2869 | return -ENOMEM; |
||
2870 | } |
||
2871 | |||
5060 | serge | 2872 | ret = i915_gem_obj_ggtt_pin(obj, 0, 0); |
3243 | Serge | 2873 | if (ret != 0) { |
2874 | drm_gem_object_unreference(&obj->base); |
||
2875 | DRM_ERROR("Failed to ping batch bo\n"); |
||
2876 | return ret; |
||
2877 | } |
||
2878 | |||
4104 | Serge | 2879 | ring->scratch.obj = obj; |
2880 | ring->scratch.gtt_offset = i915_gem_obj_ggtt_offset(obj); |
||
2332 | Serge | 2881 | } |
2340 | Serge | 2882 | |
6084 | serge | 2883 | ret = intel_init_ring_buffer(dev, ring); |
2884 | if (ret) |
||
2885 | return ret; |
||
2886 | |||
2887 | if (INTEL_INFO(dev)->gen >= 5) { |
||
2888 | ret = intel_init_pipe_control(ring); |
||
2889 | if (ret) |
||
2890 | return ret; |
||
2891 | } |
||
2892 | |||
2893 | return 0; |
||
2332 | Serge | 2894 | } |
2895 | |||
2896 | int intel_init_bsd_ring_buffer(struct drm_device *dev) |
||
2897 | { |
||
5060 | serge | 2898 | struct drm_i915_private *dev_priv = dev->dev_private; |
2899 | struct intel_engine_cs *ring = &dev_priv->ring[VCS]; |
||
2332 | Serge | 2900 | |
3031 | serge | 2901 | ring->name = "bsd ring"; |
2902 | ring->id = VCS; |
||
7144 | serge | 2903 | ring->exec_id = I915_EXEC_BSD; |
2332 | Serge | 2904 | |
3031 | serge | 2905 | ring->write_tail = ring_write_tail; |
4560 | Serge | 2906 | if (INTEL_INFO(dev)->gen >= 6) { |
3031 | serge | 2907 | ring->mmio_base = GEN6_BSD_RING_BASE; |
2908 | /* gen6 bsd needs a special wa for tail updates */ |
||
2909 | if (IS_GEN6(dev)) |
||
2910 | ring->write_tail = gen6_bsd_ring_write_tail; |
||
4104 | Serge | 2911 | ring->flush = gen6_bsd_ring_flush; |
3031 | serge | 2912 | ring->add_request = gen6_add_request; |
2913 | ring->get_seqno = gen6_ring_get_seqno; |
||
3480 | Serge | 2914 | ring->set_seqno = ring_set_seqno; |
4560 | Serge | 2915 | if (INTEL_INFO(dev)->gen >= 8) { |
2916 | ring->irq_enable_mask = |
||
2917 | GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT; |
||
2918 | ring->irq_get = gen8_ring_get_irq; |
||
2919 | ring->irq_put = gen8_ring_put_irq; |
||
2920 | ring->dispatch_execbuffer = |
||
2921 | gen8_ring_dispatch_execbuffer; |
||
5060 | serge | 2922 | if (i915_semaphore_is_enabled(dev)) { |
2923 | ring->semaphore.sync_to = gen8_ring_sync; |
||
2924 | ring->semaphore.signal = gen8_xcs_signal; |
||
2925 | GEN8_RING_SEMAPHORE_INIT; |
||
2926 | } |
||
4560 | Serge | 2927 | } else { |
6084 | serge | 2928 | ring->irq_enable_mask = GT_BSD_USER_INTERRUPT; |
2929 | ring->irq_get = gen6_ring_get_irq; |
||
2930 | ring->irq_put = gen6_ring_put_irq; |
||
4560 | Serge | 2931 | ring->dispatch_execbuffer = |
2932 | gen6_ring_dispatch_execbuffer; |
||
5060 | serge | 2933 | if (i915_semaphore_is_enabled(dev)) { |
6084 | serge | 2934 | ring->semaphore.sync_to = gen6_ring_sync; |
2935 | ring->semaphore.signal = gen6_signal; |
||
2936 | ring->semaphore.mbox.wait[RCS] = MI_SEMAPHORE_SYNC_VR; |
||
2937 | ring->semaphore.mbox.wait[VCS] = MI_SEMAPHORE_SYNC_INVALID; |
||
2938 | ring->semaphore.mbox.wait[BCS] = MI_SEMAPHORE_SYNC_VB; |
||
2939 | ring->semaphore.mbox.wait[VECS] = MI_SEMAPHORE_SYNC_VVE; |
||
2940 | ring->semaphore.mbox.wait[VCS2] = MI_SEMAPHORE_SYNC_INVALID; |
||
2941 | ring->semaphore.mbox.signal[RCS] = GEN6_RVSYNC; |
||
2942 | ring->semaphore.mbox.signal[VCS] = GEN6_NOSYNC; |
||
2943 | ring->semaphore.mbox.signal[BCS] = GEN6_BVSYNC; |
||
2944 | ring->semaphore.mbox.signal[VECS] = GEN6_VEVSYNC; |
||
2945 | ring->semaphore.mbox.signal[VCS2] = GEN6_NOSYNC; |
||
5060 | serge | 2946 | } |
4560 | Serge | 2947 | } |
3031 | serge | 2948 | } else { |
2949 | ring->mmio_base = BSD_RING_BASE; |
||
2950 | ring->flush = bsd_ring_flush; |
||
2951 | ring->add_request = i9xx_add_request; |
||
2952 | ring->get_seqno = ring_get_seqno; |
||
3480 | Serge | 2953 | ring->set_seqno = ring_set_seqno; |
3031 | serge | 2954 | if (IS_GEN5(dev)) { |
4104 | Serge | 2955 | ring->irq_enable_mask = ILK_BSD_USER_INTERRUPT; |
3031 | serge | 2956 | ring->irq_get = gen5_ring_get_irq; |
2957 | ring->irq_put = gen5_ring_put_irq; |
||
2958 | } else { |
||
2959 | ring->irq_enable_mask = I915_BSD_USER_INTERRUPT; |
||
2960 | ring->irq_get = i9xx_ring_get_irq; |
||
2961 | ring->irq_put = i9xx_ring_put_irq; |
||
2962 | } |
||
2963 | ring->dispatch_execbuffer = i965_dispatch_execbuffer; |
||
2964 | } |
||
6084 | serge | 2965 | ring->init_hw = init_ring_common; |
3031 | serge | 2966 | |
2332 | Serge | 2967 | return intel_init_ring_buffer(dev, ring); |
2968 | } |
||
2969 | |||
5060 | serge | 2970 | /** |
6084 | serge | 2971 | * Initialize the second BSD ring (eg. Broadwell GT3, Skylake GT3) |
5060 | serge | 2972 | */ |
2973 | int intel_init_bsd2_ring_buffer(struct drm_device *dev) |
||
2974 | { |
||
2975 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
2976 | struct intel_engine_cs *ring = &dev_priv->ring[VCS2]; |
||
2977 | |||
2978 | ring->name = "bsd2 ring"; |
||
2979 | ring->id = VCS2; |
||
7144 | serge | 2980 | ring->exec_id = I915_EXEC_BSD; |
5060 | serge | 2981 | |
2982 | ring->write_tail = ring_write_tail; |
||
2983 | ring->mmio_base = GEN8_BSD2_RING_BASE; |
||
2984 | ring->flush = gen6_bsd_ring_flush; |
||
2985 | ring->add_request = gen6_add_request; |
||
2986 | ring->get_seqno = gen6_ring_get_seqno; |
||
2987 | ring->set_seqno = ring_set_seqno; |
||
2988 | ring->irq_enable_mask = |
||
2989 | GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT; |
||
2990 | ring->irq_get = gen8_ring_get_irq; |
||
2991 | ring->irq_put = gen8_ring_put_irq; |
||
2992 | ring->dispatch_execbuffer = |
||
2993 | gen8_ring_dispatch_execbuffer; |
||
2994 | if (i915_semaphore_is_enabled(dev)) { |
||
2995 | ring->semaphore.sync_to = gen8_ring_sync; |
||
2996 | ring->semaphore.signal = gen8_xcs_signal; |
||
2997 | GEN8_RING_SEMAPHORE_INIT; |
||
2998 | } |
||
6084 | serge | 2999 | ring->init_hw = init_ring_common; |
5060 | serge | 3000 | |
3001 | return intel_init_ring_buffer(dev, ring); |
||
3002 | } |
||
3003 | |||
2332 | Serge | 3004 | int intel_init_blt_ring_buffer(struct drm_device *dev) |
3005 | { |
||
5060 | serge | 3006 | struct drm_i915_private *dev_priv = dev->dev_private; |
3007 | struct intel_engine_cs *ring = &dev_priv->ring[BCS]; |
||
2332 | Serge | 3008 | |
3031 | serge | 3009 | ring->name = "blitter ring"; |
3010 | ring->id = BCS; |
||
7144 | serge | 3011 | ring->exec_id = I915_EXEC_BLT; |
2332 | Serge | 3012 | |
3031 | serge | 3013 | ring->mmio_base = BLT_RING_BASE; |
3014 | ring->write_tail = ring_write_tail; |
||
4104 | Serge | 3015 | ring->flush = gen6_ring_flush; |
3031 | serge | 3016 | ring->add_request = gen6_add_request; |
3017 | ring->get_seqno = gen6_ring_get_seqno; |
||
3480 | Serge | 3018 | ring->set_seqno = ring_set_seqno; |
4560 | Serge | 3019 | if (INTEL_INFO(dev)->gen >= 8) { |
3020 | ring->irq_enable_mask = |
||
3021 | GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT; |
||
3022 | ring->irq_get = gen8_ring_get_irq; |
||
3023 | ring->irq_put = gen8_ring_put_irq; |
||
3024 | ring->dispatch_execbuffer = gen8_ring_dispatch_execbuffer; |
||
5060 | serge | 3025 | if (i915_semaphore_is_enabled(dev)) { |
3026 | ring->semaphore.sync_to = gen8_ring_sync; |
||
3027 | ring->semaphore.signal = gen8_xcs_signal; |
||
3028 | GEN8_RING_SEMAPHORE_INIT; |
||
3029 | } |
||
4560 | Serge | 3030 | } else { |
6084 | serge | 3031 | ring->irq_enable_mask = GT_BLT_USER_INTERRUPT; |
3032 | ring->irq_get = gen6_ring_get_irq; |
||
3033 | ring->irq_put = gen6_ring_put_irq; |
||
3034 | ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer; |
||
5060 | serge | 3035 | if (i915_semaphore_is_enabled(dev)) { |
3036 | ring->semaphore.signal = gen6_signal; |
||
6084 | serge | 3037 | ring->semaphore.sync_to = gen6_ring_sync; |
3038 | /* |
||
5060 | serge | 3039 | * The current semaphore is only applied on pre-gen8 |
3040 | * platform. And there is no VCS2 ring on the pre-gen8 |
||
3041 | * platform. So the semaphore between BCS and VCS2 is |
||
3042 | * initialized as INVALID. Gen8 will initialize the |
||
3043 | * sema between BCS and VCS2 later. |
||
6084 | serge | 3044 | */ |
3045 | ring->semaphore.mbox.wait[RCS] = MI_SEMAPHORE_SYNC_BR; |
||
3046 | ring->semaphore.mbox.wait[VCS] = MI_SEMAPHORE_SYNC_BV; |
||
3047 | ring->semaphore.mbox.wait[BCS] = MI_SEMAPHORE_SYNC_INVALID; |
||
3048 | ring->semaphore.mbox.wait[VECS] = MI_SEMAPHORE_SYNC_BVE; |
||
3049 | ring->semaphore.mbox.wait[VCS2] = MI_SEMAPHORE_SYNC_INVALID; |
||
3050 | ring->semaphore.mbox.signal[RCS] = GEN6_RBSYNC; |
||
3051 | ring->semaphore.mbox.signal[VCS] = GEN6_VBSYNC; |
||
3052 | ring->semaphore.mbox.signal[BCS] = GEN6_NOSYNC; |
||
3053 | ring->semaphore.mbox.signal[VECS] = GEN6_VEBSYNC; |
||
3054 | ring->semaphore.mbox.signal[VCS2] = GEN6_NOSYNC; |
||
5060 | serge | 3055 | } |
4560 | Serge | 3056 | } |
6084 | serge | 3057 | ring->init_hw = init_ring_common; |
3031 | serge | 3058 | |
2332 | Serge | 3059 | return intel_init_ring_buffer(dev, ring); |
3060 | } |
||
3031 | serge | 3061 | |
4104 | Serge | 3062 | int intel_init_vebox_ring_buffer(struct drm_device *dev) |
3063 | { |
||
5060 | serge | 3064 | struct drm_i915_private *dev_priv = dev->dev_private; |
3065 | struct intel_engine_cs *ring = &dev_priv->ring[VECS]; |
||
4104 | Serge | 3066 | |
3067 | ring->name = "video enhancement ring"; |
||
3068 | ring->id = VECS; |
||
7144 | serge | 3069 | ring->exec_id = I915_EXEC_VEBOX; |
4104 | Serge | 3070 | |
3071 | ring->mmio_base = VEBOX_RING_BASE; |
||
3072 | ring->write_tail = ring_write_tail; |
||
3073 | ring->flush = gen6_ring_flush; |
||
3074 | ring->add_request = gen6_add_request; |
||
3075 | ring->get_seqno = gen6_ring_get_seqno; |
||
3076 | ring->set_seqno = ring_set_seqno; |
||
4560 | Serge | 3077 | |
3078 | if (INTEL_INFO(dev)->gen >= 8) { |
||
3079 | ring->irq_enable_mask = |
||
3080 | GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT; |
||
3081 | ring->irq_get = gen8_ring_get_irq; |
||
3082 | ring->irq_put = gen8_ring_put_irq; |
||
3083 | ring->dispatch_execbuffer = gen8_ring_dispatch_execbuffer; |
||
5060 | serge | 3084 | if (i915_semaphore_is_enabled(dev)) { |
3085 | ring->semaphore.sync_to = gen8_ring_sync; |
||
3086 | ring->semaphore.signal = gen8_xcs_signal; |
||
3087 | GEN8_RING_SEMAPHORE_INIT; |
||
3088 | } |
||
4560 | Serge | 3089 | } else { |
6084 | serge | 3090 | ring->irq_enable_mask = PM_VEBOX_USER_INTERRUPT; |
3091 | ring->irq_get = hsw_vebox_get_irq; |
||
3092 | ring->irq_put = hsw_vebox_put_irq; |
||
3093 | ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer; |
||
5060 | serge | 3094 | if (i915_semaphore_is_enabled(dev)) { |
6084 | serge | 3095 | ring->semaphore.sync_to = gen6_ring_sync; |
3096 | ring->semaphore.signal = gen6_signal; |
||
3097 | ring->semaphore.mbox.wait[RCS] = MI_SEMAPHORE_SYNC_VER; |
||
3098 | ring->semaphore.mbox.wait[VCS] = MI_SEMAPHORE_SYNC_VEV; |
||
3099 | ring->semaphore.mbox.wait[BCS] = MI_SEMAPHORE_SYNC_VEB; |
||
3100 | ring->semaphore.mbox.wait[VECS] = MI_SEMAPHORE_SYNC_INVALID; |
||
3101 | ring->semaphore.mbox.wait[VCS2] = MI_SEMAPHORE_SYNC_INVALID; |
||
3102 | ring->semaphore.mbox.signal[RCS] = GEN6_RVESYNC; |
||
3103 | ring->semaphore.mbox.signal[VCS] = GEN6_VVESYNC; |
||
3104 | ring->semaphore.mbox.signal[BCS] = GEN6_BVESYNC; |
||
3105 | ring->semaphore.mbox.signal[VECS] = GEN6_NOSYNC; |
||
3106 | ring->semaphore.mbox.signal[VCS2] = GEN6_NOSYNC; |
||
5060 | serge | 3107 | } |
4560 | Serge | 3108 | } |
6084 | serge | 3109 | ring->init_hw = init_ring_common; |
4104 | Serge | 3110 | |
3111 | return intel_init_ring_buffer(dev, ring); |
||
3112 | } |
||
3113 | |||
3031 | serge | 3114 | int |
6084 | serge | 3115 | intel_ring_flush_all_caches(struct drm_i915_gem_request *req) |
3031 | serge | 3116 | { |
6084 | serge | 3117 | struct intel_engine_cs *ring = req->ring; |
3031 | serge | 3118 | int ret; |
3119 | |||
3120 | if (!ring->gpu_caches_dirty) |
||
3121 | return 0; |
||
3122 | |||
6084 | serge | 3123 | ret = ring->flush(req, 0, I915_GEM_GPU_DOMAINS); |
3031 | serge | 3124 | if (ret) |
3125 | return ret; |
||
3126 | |||
6084 | serge | 3127 | trace_i915_gem_ring_flush(req, 0, I915_GEM_GPU_DOMAINS); |
3031 | serge | 3128 | |
3129 | ring->gpu_caches_dirty = false; |
||
3130 | return 0; |
||
3131 | } |
||
3132 | |||
3133 | int |
||
6084 | serge | 3134 | intel_ring_invalidate_all_caches(struct drm_i915_gem_request *req) |
3031 | serge | 3135 | { |
6084 | serge | 3136 | struct intel_engine_cs *ring = req->ring; |
3031 | serge | 3137 | uint32_t flush_domains; |
3138 | int ret; |
||
3139 | |||
3140 | flush_domains = 0; |
||
3141 | if (ring->gpu_caches_dirty) |
||
3142 | flush_domains = I915_GEM_GPU_DOMAINS; |
||
3143 | |||
6084 | serge | 3144 | ret = ring->flush(req, I915_GEM_GPU_DOMAINS, flush_domains); |
3031 | serge | 3145 | if (ret) |
3146 | return ret; |
||
3147 | |||
6084 | serge | 3148 | trace_i915_gem_ring_flush(req, I915_GEM_GPU_DOMAINS, flush_domains); |
3031 | serge | 3149 | |
3150 | ring->gpu_caches_dirty = false; |
||
3151 | return 0; |
||
3152 | } |
||
5060 | serge | 3153 | |
3154 | void |
||
3155 | intel_stop_ring_buffer(struct intel_engine_cs *ring) |
||
3156 | { |
||
3157 | int ret; |
||
3158 | |||
3159 | if (!intel_ring_initialized(ring)) |
||
3160 | return; |
||
3161 | |||
3162 | ret = intel_ring_idle(ring); |
||
3163 | if (ret && !i915_reset_in_progress(&to_i915(ring->dev)->gpu_error)) |
||
3164 | DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n", |
||
3165 | ring->name, ret); |
||
3166 | |||
3167 | stop_ring(ring); |
||
3168 | }><>><>><>><>>8)><8)>><>><>><>>><>>>>=>=>>>>=> |