Oscar Mateo | b20385f | 2014-07-24 17:04:10 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2014 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Ben Widawsky <ben@bwidawsk.net> |
| 25 | * Michel Thierry <michel.thierry@intel.com> |
| 26 | * Thomas Daniel <thomas.daniel@intel.com> |
| 27 | * Oscar Mateo <oscar.mateo@intel.com> |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * GEN8 brings an expansion of the HW contexts: "Logical Ring Contexts". |
| 33 | * These expanded contexts enable a number of new abilities, especially |
| 34 | * "Execlists" (also implemented in this file). |
| 35 | * |
| 36 | * Execlists are the new method by which, on gen8+ hardware, workloads are |
| 37 | * submitted for execution (as opposed to the legacy, ringbuffer-based, method). |
| 38 | */ |
| 39 | |
| 40 | #include <drm/drmP.h> |
| 41 | #include <drm/i915_drm.h> |
| 42 | #include "i915_drv.h" |
Oscar Mateo | 127f100 | 2014-07-24 17:04:11 +0100 | [diff] [blame] | 43 | |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 44 | #define GEN8_LR_CONTEXT_RENDER_SIZE (20 * PAGE_SIZE) |
| 45 | #define GEN8_LR_CONTEXT_OTHER_SIZE (2 * PAGE_SIZE) |
| 46 | |
| 47 | #define GEN8_LR_CONTEXT_ALIGN 4096 |
| 48 | |
Oscar Mateo | 8670d6f | 2014-07-24 17:04:17 +0100 | [diff] [blame] | 49 | #define RING_ELSP(ring) ((ring)->mmio_base+0x230) |
| 50 | #define RING_CONTEXT_CONTROL(ring) ((ring)->mmio_base+0x244) |
| 51 | |
| 52 | #define CTX_LRI_HEADER_0 0x01 |
| 53 | #define CTX_CONTEXT_CONTROL 0x02 |
| 54 | #define CTX_RING_HEAD 0x04 |
| 55 | #define CTX_RING_TAIL 0x06 |
| 56 | #define CTX_RING_BUFFER_START 0x08 |
| 57 | #define CTX_RING_BUFFER_CONTROL 0x0a |
| 58 | #define CTX_BB_HEAD_U 0x0c |
| 59 | #define CTX_BB_HEAD_L 0x0e |
| 60 | #define CTX_BB_STATE 0x10 |
| 61 | #define CTX_SECOND_BB_HEAD_U 0x12 |
| 62 | #define CTX_SECOND_BB_HEAD_L 0x14 |
| 63 | #define CTX_SECOND_BB_STATE 0x16 |
| 64 | #define CTX_BB_PER_CTX_PTR 0x18 |
| 65 | #define CTX_RCS_INDIRECT_CTX 0x1a |
| 66 | #define CTX_RCS_INDIRECT_CTX_OFFSET 0x1c |
| 67 | #define CTX_LRI_HEADER_1 0x21 |
| 68 | #define CTX_CTX_TIMESTAMP 0x22 |
| 69 | #define CTX_PDP3_UDW 0x24 |
| 70 | #define CTX_PDP3_LDW 0x26 |
| 71 | #define CTX_PDP2_UDW 0x28 |
| 72 | #define CTX_PDP2_LDW 0x2a |
| 73 | #define CTX_PDP1_UDW 0x2c |
| 74 | #define CTX_PDP1_LDW 0x2e |
| 75 | #define CTX_PDP0_UDW 0x30 |
| 76 | #define CTX_PDP0_LDW 0x32 |
| 77 | #define CTX_LRI_HEADER_2 0x41 |
| 78 | #define CTX_R_PWR_CLK_STATE 0x42 |
| 79 | #define CTX_GPGPU_CSR_BASE_ADDRESS 0x44 |
| 80 | |
Oscar Mateo | 127f100 | 2014-07-24 17:04:11 +0100 | [diff] [blame] | 81 | int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists) |
| 82 | { |
Daniel Vetter | bd84b1e | 2014-08-11 15:57:57 +0200 | [diff] [blame] | 83 | WARN_ON(i915.enable_ppgtt == -1); |
| 84 | |
Oscar Mateo | 127f100 | 2014-07-24 17:04:11 +0100 | [diff] [blame] | 85 | if (enable_execlists == 0) |
| 86 | return 0; |
| 87 | |
| 88 | if (HAS_LOGICAL_RING_CONTEXTS(dev) && USES_PPGTT(dev)) |
| 89 | return 1; |
| 90 | |
| 91 | return 0; |
| 92 | } |
Oscar Mateo | ede7d42 | 2014-07-24 17:04:12 +0100 | [diff] [blame] | 93 | |
Oscar Mateo | 454afeb | 2014-07-24 17:04:22 +0100 | [diff] [blame] | 94 | int intel_execlists_submission(struct drm_device *dev, struct drm_file *file, |
| 95 | struct intel_engine_cs *ring, |
| 96 | struct intel_context *ctx, |
| 97 | struct drm_i915_gem_execbuffer2 *args, |
| 98 | struct list_head *vmas, |
| 99 | struct drm_i915_gem_object *batch_obj, |
| 100 | u64 exec_start, u32 flags) |
| 101 | { |
| 102 | /* TODO */ |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | void intel_logical_ring_stop(struct intel_engine_cs *ring) |
| 107 | { |
| 108 | /* TODO */ |
| 109 | } |
| 110 | |
| 111 | void intel_logical_ring_cleanup(struct intel_engine_cs *ring) |
| 112 | { |
Oscar Mateo | 48d8238 | 2014-07-24 17:04:23 +0100 | [diff] [blame^] | 113 | if (!intel_ring_initialized(ring)) |
| 114 | return; |
| 115 | |
| 116 | /* TODO: make sure the ring is stopped */ |
| 117 | ring->preallocated_lazy_request = NULL; |
| 118 | ring->outstanding_lazy_seqno = 0; |
| 119 | |
| 120 | if (ring->cleanup) |
| 121 | ring->cleanup(ring); |
| 122 | |
| 123 | i915_cmd_parser_fini_ring(ring); |
| 124 | |
| 125 | if (ring->status_page.obj) { |
| 126 | kunmap(sg_page(ring->status_page.obj->pages->sgl)); |
| 127 | ring->status_page.obj = NULL; |
| 128 | } |
Oscar Mateo | 454afeb | 2014-07-24 17:04:22 +0100 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | static int logical_ring_init(struct drm_device *dev, struct intel_engine_cs *ring) |
| 132 | { |
Oscar Mateo | 48d8238 | 2014-07-24 17:04:23 +0100 | [diff] [blame^] | 133 | int ret; |
| 134 | struct intel_context *dctx = ring->default_context; |
| 135 | struct drm_i915_gem_object *dctx_obj; |
| 136 | |
| 137 | /* Intentionally left blank. */ |
| 138 | ring->buffer = NULL; |
| 139 | |
| 140 | ring->dev = dev; |
| 141 | INIT_LIST_HEAD(&ring->active_list); |
| 142 | INIT_LIST_HEAD(&ring->request_list); |
| 143 | init_waitqueue_head(&ring->irq_queue); |
| 144 | |
| 145 | ret = intel_lr_context_deferred_create(dctx, ring); |
| 146 | if (ret) |
| 147 | return ret; |
| 148 | |
| 149 | /* The status page is offset 0 from the context object in LRCs. */ |
| 150 | dctx_obj = dctx->engine[ring->id].state; |
| 151 | ring->status_page.gfx_addr = i915_gem_obj_ggtt_offset(dctx_obj); |
| 152 | ring->status_page.page_addr = kmap(sg_page(dctx_obj->pages->sgl)); |
| 153 | if (ring->status_page.page_addr == NULL) |
| 154 | return -ENOMEM; |
| 155 | ring->status_page.obj = dctx_obj; |
| 156 | |
| 157 | ret = i915_cmd_parser_init_ring(ring); |
| 158 | if (ret) |
| 159 | return ret; |
| 160 | |
| 161 | if (ring->init) { |
| 162 | ret = ring->init(ring); |
| 163 | if (ret) |
| 164 | return ret; |
| 165 | } |
| 166 | |
Oscar Mateo | 454afeb | 2014-07-24 17:04:22 +0100 | [diff] [blame] | 167 | return 0; |
| 168 | } |
| 169 | |
| 170 | static int logical_render_ring_init(struct drm_device *dev) |
| 171 | { |
| 172 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 173 | struct intel_engine_cs *ring = &dev_priv->ring[RCS]; |
| 174 | |
| 175 | ring->name = "render ring"; |
| 176 | ring->id = RCS; |
| 177 | ring->mmio_base = RENDER_RING_BASE; |
| 178 | ring->irq_enable_mask = |
| 179 | GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT; |
| 180 | |
| 181 | return logical_ring_init(dev, ring); |
| 182 | } |
| 183 | |
| 184 | static int logical_bsd_ring_init(struct drm_device *dev) |
| 185 | { |
| 186 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 187 | struct intel_engine_cs *ring = &dev_priv->ring[VCS]; |
| 188 | |
| 189 | ring->name = "bsd ring"; |
| 190 | ring->id = VCS; |
| 191 | ring->mmio_base = GEN6_BSD_RING_BASE; |
| 192 | ring->irq_enable_mask = |
| 193 | GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT; |
| 194 | |
| 195 | return logical_ring_init(dev, ring); |
| 196 | } |
| 197 | |
| 198 | static int logical_bsd2_ring_init(struct drm_device *dev) |
| 199 | { |
| 200 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 201 | struct intel_engine_cs *ring = &dev_priv->ring[VCS2]; |
| 202 | |
| 203 | ring->name = "bds2 ring"; |
| 204 | ring->id = VCS2; |
| 205 | ring->mmio_base = GEN8_BSD2_RING_BASE; |
| 206 | ring->irq_enable_mask = |
| 207 | GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT; |
| 208 | |
| 209 | return logical_ring_init(dev, ring); |
| 210 | } |
| 211 | |
| 212 | static int logical_blt_ring_init(struct drm_device *dev) |
| 213 | { |
| 214 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 215 | struct intel_engine_cs *ring = &dev_priv->ring[BCS]; |
| 216 | |
| 217 | ring->name = "blitter ring"; |
| 218 | ring->id = BCS; |
| 219 | ring->mmio_base = BLT_RING_BASE; |
| 220 | ring->irq_enable_mask = |
| 221 | GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT; |
| 222 | |
| 223 | return logical_ring_init(dev, ring); |
| 224 | } |
| 225 | |
| 226 | static int logical_vebox_ring_init(struct drm_device *dev) |
| 227 | { |
| 228 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 229 | struct intel_engine_cs *ring = &dev_priv->ring[VECS]; |
| 230 | |
| 231 | ring->name = "video enhancement ring"; |
| 232 | ring->id = VECS; |
| 233 | ring->mmio_base = VEBOX_RING_BASE; |
| 234 | ring->irq_enable_mask = |
| 235 | GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT; |
| 236 | |
| 237 | return logical_ring_init(dev, ring); |
| 238 | } |
| 239 | |
| 240 | int intel_logical_rings_init(struct drm_device *dev) |
| 241 | { |
| 242 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 243 | int ret; |
| 244 | |
| 245 | ret = logical_render_ring_init(dev); |
| 246 | if (ret) |
| 247 | return ret; |
| 248 | |
| 249 | if (HAS_BSD(dev)) { |
| 250 | ret = logical_bsd_ring_init(dev); |
| 251 | if (ret) |
| 252 | goto cleanup_render_ring; |
| 253 | } |
| 254 | |
| 255 | if (HAS_BLT(dev)) { |
| 256 | ret = logical_blt_ring_init(dev); |
| 257 | if (ret) |
| 258 | goto cleanup_bsd_ring; |
| 259 | } |
| 260 | |
| 261 | if (HAS_VEBOX(dev)) { |
| 262 | ret = logical_vebox_ring_init(dev); |
| 263 | if (ret) |
| 264 | goto cleanup_blt_ring; |
| 265 | } |
| 266 | |
| 267 | if (HAS_BSD2(dev)) { |
| 268 | ret = logical_bsd2_ring_init(dev); |
| 269 | if (ret) |
| 270 | goto cleanup_vebox_ring; |
| 271 | } |
| 272 | |
| 273 | ret = i915_gem_set_seqno(dev, ((u32)~0 - 0x1000)); |
| 274 | if (ret) |
| 275 | goto cleanup_bsd2_ring; |
| 276 | |
| 277 | return 0; |
| 278 | |
| 279 | cleanup_bsd2_ring: |
| 280 | intel_logical_ring_cleanup(&dev_priv->ring[VCS2]); |
| 281 | cleanup_vebox_ring: |
| 282 | intel_logical_ring_cleanup(&dev_priv->ring[VECS]); |
| 283 | cleanup_blt_ring: |
| 284 | intel_logical_ring_cleanup(&dev_priv->ring[BCS]); |
| 285 | cleanup_bsd_ring: |
| 286 | intel_logical_ring_cleanup(&dev_priv->ring[VCS]); |
| 287 | cleanup_render_ring: |
| 288 | intel_logical_ring_cleanup(&dev_priv->ring[RCS]); |
| 289 | |
| 290 | return ret; |
| 291 | } |
| 292 | |
Oscar Mateo | 8670d6f | 2014-07-24 17:04:17 +0100 | [diff] [blame] | 293 | static int |
| 294 | populate_lr_context(struct intel_context *ctx, struct drm_i915_gem_object *ctx_obj, |
| 295 | struct intel_engine_cs *ring, struct intel_ringbuffer *ringbuf) |
| 296 | { |
| 297 | struct drm_i915_gem_object *ring_obj = ringbuf->obj; |
| 298 | struct i915_hw_ppgtt *ppgtt = ctx_to_ppgtt(ctx); |
| 299 | struct page *page; |
| 300 | uint32_t *reg_state; |
| 301 | int ret; |
| 302 | |
| 303 | ret = i915_gem_object_set_to_cpu_domain(ctx_obj, true); |
| 304 | if (ret) { |
| 305 | DRM_DEBUG_DRIVER("Could not set to CPU domain\n"); |
| 306 | return ret; |
| 307 | } |
| 308 | |
| 309 | ret = i915_gem_object_get_pages(ctx_obj); |
| 310 | if (ret) { |
| 311 | DRM_DEBUG_DRIVER("Could not get object pages\n"); |
| 312 | return ret; |
| 313 | } |
| 314 | |
| 315 | i915_gem_object_pin_pages(ctx_obj); |
| 316 | |
| 317 | /* The second page of the context object contains some fields which must |
| 318 | * be set up prior to the first execution. */ |
| 319 | page = i915_gem_object_get_page(ctx_obj, 1); |
| 320 | reg_state = kmap_atomic(page); |
| 321 | |
| 322 | /* A context is actually a big batch buffer with several MI_LOAD_REGISTER_IMM |
| 323 | * commands followed by (reg, value) pairs. The values we are setting here are |
| 324 | * only for the first context restore: on a subsequent save, the GPU will |
| 325 | * recreate this batchbuffer with new values (including all the missing |
| 326 | * MI_LOAD_REGISTER_IMM commands that we are not initializing here). */ |
| 327 | if (ring->id == RCS) |
| 328 | reg_state[CTX_LRI_HEADER_0] = MI_LOAD_REGISTER_IMM(14); |
| 329 | else |
| 330 | reg_state[CTX_LRI_HEADER_0] = MI_LOAD_REGISTER_IMM(11); |
| 331 | reg_state[CTX_LRI_HEADER_0] |= MI_LRI_FORCE_POSTED; |
| 332 | reg_state[CTX_CONTEXT_CONTROL] = RING_CONTEXT_CONTROL(ring); |
| 333 | reg_state[CTX_CONTEXT_CONTROL+1] = |
| 334 | _MASKED_BIT_ENABLE((1<<3) | MI_RESTORE_INHIBIT); |
| 335 | reg_state[CTX_RING_HEAD] = RING_HEAD(ring->mmio_base); |
| 336 | reg_state[CTX_RING_HEAD+1] = 0; |
| 337 | reg_state[CTX_RING_TAIL] = RING_TAIL(ring->mmio_base); |
| 338 | reg_state[CTX_RING_TAIL+1] = 0; |
| 339 | reg_state[CTX_RING_BUFFER_START] = RING_START(ring->mmio_base); |
| 340 | reg_state[CTX_RING_BUFFER_START+1] = i915_gem_obj_ggtt_offset(ring_obj); |
| 341 | reg_state[CTX_RING_BUFFER_CONTROL] = RING_CTL(ring->mmio_base); |
| 342 | reg_state[CTX_RING_BUFFER_CONTROL+1] = |
| 343 | ((ringbuf->size - PAGE_SIZE) & RING_NR_PAGES) | RING_VALID; |
| 344 | reg_state[CTX_BB_HEAD_U] = ring->mmio_base + 0x168; |
| 345 | reg_state[CTX_BB_HEAD_U+1] = 0; |
| 346 | reg_state[CTX_BB_HEAD_L] = ring->mmio_base + 0x140; |
| 347 | reg_state[CTX_BB_HEAD_L+1] = 0; |
| 348 | reg_state[CTX_BB_STATE] = ring->mmio_base + 0x110; |
| 349 | reg_state[CTX_BB_STATE+1] = (1<<5); |
| 350 | reg_state[CTX_SECOND_BB_HEAD_U] = ring->mmio_base + 0x11c; |
| 351 | reg_state[CTX_SECOND_BB_HEAD_U+1] = 0; |
| 352 | reg_state[CTX_SECOND_BB_HEAD_L] = ring->mmio_base + 0x114; |
| 353 | reg_state[CTX_SECOND_BB_HEAD_L+1] = 0; |
| 354 | reg_state[CTX_SECOND_BB_STATE] = ring->mmio_base + 0x118; |
| 355 | reg_state[CTX_SECOND_BB_STATE+1] = 0; |
| 356 | if (ring->id == RCS) { |
| 357 | /* TODO: according to BSpec, the register state context |
| 358 | * for CHV does not have these. OTOH, these registers do |
| 359 | * exist in CHV. I'm waiting for a clarification */ |
| 360 | reg_state[CTX_BB_PER_CTX_PTR] = ring->mmio_base + 0x1c0; |
| 361 | reg_state[CTX_BB_PER_CTX_PTR+1] = 0; |
| 362 | reg_state[CTX_RCS_INDIRECT_CTX] = ring->mmio_base + 0x1c4; |
| 363 | reg_state[CTX_RCS_INDIRECT_CTX+1] = 0; |
| 364 | reg_state[CTX_RCS_INDIRECT_CTX_OFFSET] = ring->mmio_base + 0x1c8; |
| 365 | reg_state[CTX_RCS_INDIRECT_CTX_OFFSET+1] = 0; |
| 366 | } |
| 367 | reg_state[CTX_LRI_HEADER_1] = MI_LOAD_REGISTER_IMM(9); |
| 368 | reg_state[CTX_LRI_HEADER_1] |= MI_LRI_FORCE_POSTED; |
| 369 | reg_state[CTX_CTX_TIMESTAMP] = ring->mmio_base + 0x3a8; |
| 370 | reg_state[CTX_CTX_TIMESTAMP+1] = 0; |
| 371 | reg_state[CTX_PDP3_UDW] = GEN8_RING_PDP_UDW(ring, 3); |
| 372 | reg_state[CTX_PDP3_LDW] = GEN8_RING_PDP_LDW(ring, 3); |
| 373 | reg_state[CTX_PDP2_UDW] = GEN8_RING_PDP_UDW(ring, 2); |
| 374 | reg_state[CTX_PDP2_LDW] = GEN8_RING_PDP_LDW(ring, 2); |
| 375 | reg_state[CTX_PDP1_UDW] = GEN8_RING_PDP_UDW(ring, 1); |
| 376 | reg_state[CTX_PDP1_LDW] = GEN8_RING_PDP_LDW(ring, 1); |
| 377 | reg_state[CTX_PDP0_UDW] = GEN8_RING_PDP_UDW(ring, 0); |
| 378 | reg_state[CTX_PDP0_LDW] = GEN8_RING_PDP_LDW(ring, 0); |
| 379 | reg_state[CTX_PDP3_UDW+1] = upper_32_bits(ppgtt->pd_dma_addr[3]); |
| 380 | reg_state[CTX_PDP3_LDW+1] = lower_32_bits(ppgtt->pd_dma_addr[3]); |
| 381 | reg_state[CTX_PDP2_UDW+1] = upper_32_bits(ppgtt->pd_dma_addr[2]); |
| 382 | reg_state[CTX_PDP2_LDW+1] = lower_32_bits(ppgtt->pd_dma_addr[2]); |
| 383 | reg_state[CTX_PDP1_UDW+1] = upper_32_bits(ppgtt->pd_dma_addr[1]); |
| 384 | reg_state[CTX_PDP1_LDW+1] = lower_32_bits(ppgtt->pd_dma_addr[1]); |
| 385 | reg_state[CTX_PDP0_UDW+1] = upper_32_bits(ppgtt->pd_dma_addr[0]); |
| 386 | reg_state[CTX_PDP0_LDW+1] = lower_32_bits(ppgtt->pd_dma_addr[0]); |
| 387 | if (ring->id == RCS) { |
| 388 | reg_state[CTX_LRI_HEADER_2] = MI_LOAD_REGISTER_IMM(1); |
| 389 | reg_state[CTX_R_PWR_CLK_STATE] = 0x20c8; |
| 390 | reg_state[CTX_R_PWR_CLK_STATE+1] = 0; |
| 391 | } |
| 392 | |
| 393 | kunmap_atomic(reg_state); |
| 394 | |
| 395 | ctx_obj->dirty = 1; |
| 396 | set_page_dirty(page); |
| 397 | i915_gem_object_unpin_pages(ctx_obj); |
| 398 | |
| 399 | return 0; |
| 400 | } |
| 401 | |
Oscar Mateo | ede7d42 | 2014-07-24 17:04:12 +0100 | [diff] [blame] | 402 | void intel_lr_context_free(struct intel_context *ctx) |
| 403 | { |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 404 | int i; |
| 405 | |
| 406 | for (i = 0; i < I915_NUM_RINGS; i++) { |
| 407 | struct drm_i915_gem_object *ctx_obj = ctx->engine[i].state; |
Oscar Mateo | 84c2377 | 2014-07-24 17:04:15 +0100 | [diff] [blame] | 408 | struct intel_ringbuffer *ringbuf = ctx->engine[i].ringbuf; |
| 409 | |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 410 | if (ctx_obj) { |
Oscar Mateo | 84c2377 | 2014-07-24 17:04:15 +0100 | [diff] [blame] | 411 | intel_destroy_ringbuffer_obj(ringbuf); |
| 412 | kfree(ringbuf); |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 413 | i915_gem_object_ggtt_unpin(ctx_obj); |
| 414 | drm_gem_object_unreference(&ctx_obj->base); |
| 415 | } |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | static uint32_t get_lr_context_size(struct intel_engine_cs *ring) |
| 420 | { |
| 421 | int ret = 0; |
| 422 | |
| 423 | WARN_ON(INTEL_INFO(ring->dev)->gen != 8); |
| 424 | |
| 425 | switch (ring->id) { |
| 426 | case RCS: |
| 427 | ret = GEN8_LR_CONTEXT_RENDER_SIZE; |
| 428 | break; |
| 429 | case VCS: |
| 430 | case BCS: |
| 431 | case VECS: |
| 432 | case VCS2: |
| 433 | ret = GEN8_LR_CONTEXT_OTHER_SIZE; |
| 434 | break; |
| 435 | } |
| 436 | |
| 437 | return ret; |
Oscar Mateo | ede7d42 | 2014-07-24 17:04:12 +0100 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | int intel_lr_context_deferred_create(struct intel_context *ctx, |
| 441 | struct intel_engine_cs *ring) |
| 442 | { |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 443 | struct drm_device *dev = ring->dev; |
| 444 | struct drm_i915_gem_object *ctx_obj; |
| 445 | uint32_t context_size; |
Oscar Mateo | 84c2377 | 2014-07-24 17:04:15 +0100 | [diff] [blame] | 446 | struct intel_ringbuffer *ringbuf; |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 447 | int ret; |
| 448 | |
Oscar Mateo | ede7d42 | 2014-07-24 17:04:12 +0100 | [diff] [blame] | 449 | WARN_ON(ctx->legacy_hw_ctx.rcs_state != NULL); |
Oscar Mateo | 48d8238 | 2014-07-24 17:04:23 +0100 | [diff] [blame^] | 450 | if (ctx->engine[ring->id].state) |
| 451 | return 0; |
Oscar Mateo | ede7d42 | 2014-07-24 17:04:12 +0100 | [diff] [blame] | 452 | |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 453 | context_size = round_up(get_lr_context_size(ring), 4096); |
| 454 | |
| 455 | ctx_obj = i915_gem_alloc_context_obj(dev, context_size); |
| 456 | if (IS_ERR(ctx_obj)) { |
| 457 | ret = PTR_ERR(ctx_obj); |
| 458 | DRM_DEBUG_DRIVER("Alloc LRC backing obj failed: %d\n", ret); |
| 459 | return ret; |
| 460 | } |
| 461 | |
| 462 | ret = i915_gem_obj_ggtt_pin(ctx_obj, GEN8_LR_CONTEXT_ALIGN, 0); |
| 463 | if (ret) { |
| 464 | DRM_DEBUG_DRIVER("Pin LRC backing obj failed: %d\n", ret); |
| 465 | drm_gem_object_unreference(&ctx_obj->base); |
| 466 | return ret; |
| 467 | } |
| 468 | |
Oscar Mateo | 84c2377 | 2014-07-24 17:04:15 +0100 | [diff] [blame] | 469 | ringbuf = kzalloc(sizeof(*ringbuf), GFP_KERNEL); |
| 470 | if (!ringbuf) { |
| 471 | DRM_DEBUG_DRIVER("Failed to allocate ringbuffer %s\n", |
| 472 | ring->name); |
| 473 | i915_gem_object_ggtt_unpin(ctx_obj); |
| 474 | drm_gem_object_unreference(&ctx_obj->base); |
| 475 | ret = -ENOMEM; |
| 476 | return ret; |
| 477 | } |
| 478 | |
Daniel Vetter | 0c7dd53 | 2014-08-11 16:17:44 +0200 | [diff] [blame] | 479 | ringbuf->ring = ring; |
Oscar Mateo | 84c2377 | 2014-07-24 17:04:15 +0100 | [diff] [blame] | 480 | ringbuf->size = 32 * PAGE_SIZE; |
| 481 | ringbuf->effective_size = ringbuf->size; |
| 482 | ringbuf->head = 0; |
| 483 | ringbuf->tail = 0; |
| 484 | ringbuf->space = ringbuf->size; |
| 485 | ringbuf->last_retired_head = -1; |
| 486 | |
| 487 | /* TODO: For now we put this in the mappable region so that we can reuse |
| 488 | * the existing ringbuffer code which ioremaps it. When we start |
| 489 | * creating many contexts, this will no longer work and we must switch |
| 490 | * to a kmapish interface. |
| 491 | */ |
| 492 | ret = intel_alloc_ringbuffer_obj(dev, ringbuf); |
| 493 | if (ret) { |
| 494 | DRM_DEBUG_DRIVER("Failed to allocate ringbuffer obj %s: %d\n", |
| 495 | ring->name, ret); |
Oscar Mateo | 8670d6f | 2014-07-24 17:04:17 +0100 | [diff] [blame] | 496 | goto error; |
| 497 | } |
| 498 | |
| 499 | ret = populate_lr_context(ctx, ctx_obj, ring, ringbuf); |
| 500 | if (ret) { |
| 501 | DRM_DEBUG_DRIVER("Failed to populate LRC: %d\n", ret); |
| 502 | intel_destroy_ringbuffer_obj(ringbuf); |
| 503 | goto error; |
Oscar Mateo | 84c2377 | 2014-07-24 17:04:15 +0100 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | ctx->engine[ring->id].ringbuf = ringbuf; |
Oscar Mateo | 8c857917 | 2014-07-24 17:04:14 +0100 | [diff] [blame] | 507 | ctx->engine[ring->id].state = ctx_obj; |
Oscar Mateo | ede7d42 | 2014-07-24 17:04:12 +0100 | [diff] [blame] | 508 | |
| 509 | return 0; |
Oscar Mateo | 8670d6f | 2014-07-24 17:04:17 +0100 | [diff] [blame] | 510 | |
| 511 | error: |
| 512 | kfree(ringbuf); |
| 513 | i915_gem_object_ggtt_unpin(ctx_obj); |
| 514 | drm_gem_object_unreference(&ctx_obj->base); |
| 515 | return ret; |
Oscar Mateo | ede7d42 | 2014-07-24 17:04:12 +0100 | [diff] [blame] | 516 | } |