1352ff8bdSFrançois Tigeot /* 2352ff8bdSFrançois Tigeot * Copyright © 2014 Intel Corporation 3352ff8bdSFrançois Tigeot * 4352ff8bdSFrançois Tigeot * Permission is hereby granted, free of charge, to any person obtaining a 5352ff8bdSFrançois Tigeot * copy of this software and associated documentation files (the "Software"), 6352ff8bdSFrançois Tigeot * to deal in the Software without restriction, including without limitation 7352ff8bdSFrançois Tigeot * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8352ff8bdSFrançois Tigeot * and/or sell copies of the Software, and to permit persons to whom the 9352ff8bdSFrançois Tigeot * Software is furnished to do so, subject to the following conditions: 10352ff8bdSFrançois Tigeot * 11352ff8bdSFrançois Tigeot * The above copyright notice and this permission notice (including the next 12352ff8bdSFrançois Tigeot * paragraph) shall be included in all copies or substantial portions of the 13352ff8bdSFrançois Tigeot * Software. 14352ff8bdSFrançois Tigeot * 15352ff8bdSFrançois Tigeot * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16352ff8bdSFrançois Tigeot * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17352ff8bdSFrançois Tigeot * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18352ff8bdSFrançois Tigeot * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19352ff8bdSFrançois Tigeot * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20352ff8bdSFrançois Tigeot * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21352ff8bdSFrançois Tigeot * IN THE SOFTWARE. 22352ff8bdSFrançois Tigeot * 23352ff8bdSFrançois Tigeot */ 24352ff8bdSFrançois Tigeot #include <linux/firmware.h> 258cd49a21SFrançois Tigeot #include <linux/circ_buf.h> 26352ff8bdSFrançois Tigeot #include "i915_drv.h" 27352ff8bdSFrançois Tigeot #include "intel_guc.h" 28352ff8bdSFrançois Tigeot 29352ff8bdSFrançois Tigeot /** 30aee94f86SFrançois Tigeot * DOC: GuC-based command submission 31352ff8bdSFrançois Tigeot * 32352ff8bdSFrançois Tigeot * i915_guc_client: 33352ff8bdSFrançois Tigeot * We use the term client to avoid confusion with contexts. A i915_guc_client is 34352ff8bdSFrançois Tigeot * equivalent to GuC object guc_context_desc. This context descriptor is 35352ff8bdSFrançois Tigeot * allocated from a pool of 1024 entries. Kernel driver will allocate doorbell 36352ff8bdSFrançois Tigeot * and workqueue for it. Also the process descriptor (guc_process_desc), which 37352ff8bdSFrançois Tigeot * is mapped to client space. So the client can write Work Item then ring the 38352ff8bdSFrançois Tigeot * doorbell. 39352ff8bdSFrançois Tigeot * 40352ff8bdSFrançois Tigeot * To simplify the implementation, we allocate one gem object that contains all 41352ff8bdSFrançois Tigeot * pages for doorbell, process descriptor and workqueue. 42352ff8bdSFrançois Tigeot * 43352ff8bdSFrançois Tigeot * The Scratch registers: 44352ff8bdSFrançois Tigeot * There are 16 MMIO-based registers start from 0xC180. The kernel driver writes 45352ff8bdSFrançois Tigeot * a value to the action register (SOFT_SCRATCH_0) along with any data. It then 46352ff8bdSFrançois Tigeot * triggers an interrupt on the GuC via another register write (0xC4C8). 47352ff8bdSFrançois Tigeot * Firmware writes a success/fail code back to the action register after 48352ff8bdSFrançois Tigeot * processes the request. The kernel driver polls waiting for this update and 49352ff8bdSFrançois Tigeot * then proceeds. 50352ff8bdSFrançois Tigeot * See host2guc_action() 51352ff8bdSFrançois Tigeot * 52352ff8bdSFrançois Tigeot * Doorbells: 53352ff8bdSFrançois Tigeot * Doorbells are interrupts to uKernel. A doorbell is a single cache line (QW) 54352ff8bdSFrançois Tigeot * mapped into process space. 55352ff8bdSFrançois Tigeot * 56352ff8bdSFrançois Tigeot * Work Items: 57352ff8bdSFrançois Tigeot * There are several types of work items that the host may place into a 58352ff8bdSFrançois Tigeot * workqueue, each with its own requirements and limitations. Currently only 59352ff8bdSFrançois Tigeot * WQ_TYPE_INORDER is needed to support legacy submission via GuC, which 60352ff8bdSFrançois Tigeot * represents in-order queue. The kernel driver packs ring tail pointer and an 61352ff8bdSFrançois Tigeot * ELSP context descriptor dword into Work Item. 62352ff8bdSFrançois Tigeot * See guc_add_workqueue_item() 63352ff8bdSFrançois Tigeot * 64352ff8bdSFrançois Tigeot */ 65352ff8bdSFrançois Tigeot 66352ff8bdSFrançois Tigeot /* 67352ff8bdSFrançois Tigeot * Read GuC command/status register (SOFT_SCRATCH_0) 68352ff8bdSFrançois Tigeot * Return true if it contains a response rather than a command 69352ff8bdSFrançois Tigeot */ 70352ff8bdSFrançois Tigeot static inline bool host2guc_action_response(struct drm_i915_private *dev_priv, 71352ff8bdSFrançois Tigeot u32 *status) 72352ff8bdSFrançois Tigeot { 73352ff8bdSFrançois Tigeot u32 val = I915_READ(SOFT_SCRATCH(0)); 74352ff8bdSFrançois Tigeot *status = val; 75352ff8bdSFrançois Tigeot return GUC2HOST_IS_RESPONSE(val); 76352ff8bdSFrançois Tigeot } 77352ff8bdSFrançois Tigeot 78352ff8bdSFrançois Tigeot static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len) 79352ff8bdSFrançois Tigeot { 80352ff8bdSFrançois Tigeot struct drm_i915_private *dev_priv = guc_to_i915(guc); 81352ff8bdSFrançois Tigeot u32 status; 82352ff8bdSFrançois Tigeot int i; 83352ff8bdSFrançois Tigeot int ret; 84352ff8bdSFrançois Tigeot 85352ff8bdSFrançois Tigeot if (WARN_ON(len < 1 || len > 15)) 86352ff8bdSFrançois Tigeot return -EINVAL; 87352ff8bdSFrançois Tigeot 88352ff8bdSFrançois Tigeot intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); 89352ff8bdSFrançois Tigeot 90352ff8bdSFrançois Tigeot dev_priv->guc.action_count += 1; 91352ff8bdSFrançois Tigeot dev_priv->guc.action_cmd = data[0]; 92352ff8bdSFrançois Tigeot 93352ff8bdSFrançois Tigeot for (i = 0; i < len; i++) 94352ff8bdSFrançois Tigeot I915_WRITE(SOFT_SCRATCH(i), data[i]); 95352ff8bdSFrançois Tigeot 96352ff8bdSFrançois Tigeot POSTING_READ(SOFT_SCRATCH(i - 1)); 97352ff8bdSFrançois Tigeot 98352ff8bdSFrançois Tigeot I915_WRITE(HOST2GUC_INTERRUPT, HOST2GUC_TRIGGER); 99352ff8bdSFrançois Tigeot 100*303bf270SFrançois Tigeot /* 101*303bf270SFrançois Tigeot * Fast commands should complete in less than 10us, so sample quickly 102*303bf270SFrançois Tigeot * up to that length of time, then switch to a slower sleep-wait loop. 103*303bf270SFrançois Tigeot * No HOST2GUC command should ever take longer than 10ms. 104*303bf270SFrançois Tigeot */ 105*303bf270SFrançois Tigeot ret = wait_for_us(host2guc_action_response(dev_priv, &status), 10); 106*303bf270SFrançois Tigeot if (ret) 107*303bf270SFrançois Tigeot ret = wait_for(host2guc_action_response(dev_priv, &status), 10); 108352ff8bdSFrançois Tigeot if (status != GUC2HOST_STATUS_SUCCESS) { 109352ff8bdSFrançois Tigeot /* 110352ff8bdSFrançois Tigeot * Either the GuC explicitly returned an error (which 111352ff8bdSFrançois Tigeot * we convert to -EIO here) or no response at all was 112352ff8bdSFrançois Tigeot * received within the timeout limit (-ETIMEDOUT) 113352ff8bdSFrançois Tigeot */ 114352ff8bdSFrançois Tigeot if (ret != -ETIMEDOUT) 115352ff8bdSFrançois Tigeot ret = -EIO; 116352ff8bdSFrançois Tigeot 117352ff8bdSFrançois Tigeot DRM_ERROR("GUC: host2guc action 0x%X failed. ret=%d " 118352ff8bdSFrançois Tigeot "status=0x%08X response=0x%08X\n", 119352ff8bdSFrançois Tigeot data[0], ret, status, 120352ff8bdSFrançois Tigeot I915_READ(SOFT_SCRATCH(15))); 121352ff8bdSFrançois Tigeot 122352ff8bdSFrançois Tigeot dev_priv->guc.action_fail += 1; 123352ff8bdSFrançois Tigeot dev_priv->guc.action_err = ret; 124352ff8bdSFrançois Tigeot } 125352ff8bdSFrançois Tigeot dev_priv->guc.action_status = status; 126352ff8bdSFrançois Tigeot 127352ff8bdSFrançois Tigeot intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); 128352ff8bdSFrançois Tigeot 129352ff8bdSFrançois Tigeot return ret; 130352ff8bdSFrançois Tigeot } 131352ff8bdSFrançois Tigeot 132352ff8bdSFrançois Tigeot /* 133352ff8bdSFrançois Tigeot * Tell the GuC to allocate or deallocate a specific doorbell 134352ff8bdSFrançois Tigeot */ 135352ff8bdSFrançois Tigeot 136352ff8bdSFrançois Tigeot static int host2guc_allocate_doorbell(struct intel_guc *guc, 137352ff8bdSFrançois Tigeot struct i915_guc_client *client) 138352ff8bdSFrançois Tigeot { 139352ff8bdSFrançois Tigeot u32 data[2]; 140352ff8bdSFrançois Tigeot 141352ff8bdSFrançois Tigeot data[0] = HOST2GUC_ACTION_ALLOCATE_DOORBELL; 142352ff8bdSFrançois Tigeot data[1] = client->ctx_index; 143352ff8bdSFrançois Tigeot 144352ff8bdSFrançois Tigeot return host2guc_action(guc, data, 2); 145352ff8bdSFrançois Tigeot } 146352ff8bdSFrançois Tigeot 147352ff8bdSFrançois Tigeot static int host2guc_release_doorbell(struct intel_guc *guc, 148352ff8bdSFrançois Tigeot struct i915_guc_client *client) 149352ff8bdSFrançois Tigeot { 150352ff8bdSFrançois Tigeot u32 data[2]; 151352ff8bdSFrançois Tigeot 152352ff8bdSFrançois Tigeot data[0] = HOST2GUC_ACTION_DEALLOCATE_DOORBELL; 153352ff8bdSFrançois Tigeot data[1] = client->ctx_index; 154352ff8bdSFrançois Tigeot 155352ff8bdSFrançois Tigeot return host2guc_action(guc, data, 2); 156352ff8bdSFrançois Tigeot } 157352ff8bdSFrançois Tigeot 158352ff8bdSFrançois Tigeot static int host2guc_sample_forcewake(struct intel_guc *guc, 159352ff8bdSFrançois Tigeot struct i915_guc_client *client) 160352ff8bdSFrançois Tigeot { 161352ff8bdSFrançois Tigeot struct drm_i915_private *dev_priv = guc_to_i915(guc); 162352ff8bdSFrançois Tigeot u32 data[2]; 163352ff8bdSFrançois Tigeot 164352ff8bdSFrançois Tigeot data[0] = HOST2GUC_ACTION_SAMPLE_FORCEWAKE; 165352ff8bdSFrançois Tigeot /* WaRsDisableCoarsePowerGating:skl,bxt */ 1661487f786SFrançois Tigeot if (!intel_enable_rc6() || NEEDS_WaRsDisableCoarsePowerGating(dev_priv)) 167352ff8bdSFrançois Tigeot data[1] = 0; 168352ff8bdSFrançois Tigeot else 169352ff8bdSFrançois Tigeot /* bit 0 and 1 are for Render and Media domain separately */ 170352ff8bdSFrançois Tigeot data[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA; 171352ff8bdSFrançois Tigeot 172352ff8bdSFrançois Tigeot return host2guc_action(guc, data, ARRAY_SIZE(data)); 173352ff8bdSFrançois Tigeot } 174352ff8bdSFrançois Tigeot 175352ff8bdSFrançois Tigeot /* 176352ff8bdSFrançois Tigeot * Initialise, update, or clear doorbell data shared with the GuC 177352ff8bdSFrançois Tigeot * 178352ff8bdSFrançois Tigeot * These functions modify shared data and so need access to the mapped 179352ff8bdSFrançois Tigeot * client object which contains the page being used for the doorbell 180352ff8bdSFrançois Tigeot */ 181352ff8bdSFrançois Tigeot 1821487f786SFrançois Tigeot static int guc_update_doorbell_id(struct intel_guc *guc, 1831487f786SFrançois Tigeot struct i915_guc_client *client, 1841487f786SFrançois Tigeot u16 new_id) 185352ff8bdSFrançois Tigeot { 1861487f786SFrançois Tigeot struct sg_table *sg = guc->ctx_pool_obj->pages; 1871487f786SFrançois Tigeot void *doorbell_bitmap = guc->doorbell_bitmap; 188352ff8bdSFrançois Tigeot struct guc_doorbell_info *doorbell; 1891487f786SFrançois Tigeot struct guc_context_desc desc; 1901487f786SFrançois Tigeot size_t len; 191352ff8bdSFrançois Tigeot 1921487f786SFrançois Tigeot doorbell = client->client_base + client->doorbell_offset; 193352ff8bdSFrançois Tigeot 1941487f786SFrançois Tigeot if (client->doorbell_id != GUC_INVALID_DOORBELL_ID && 1951487f786SFrançois Tigeot test_bit(client->doorbell_id, doorbell_bitmap)) { 1961487f786SFrançois Tigeot /* Deactivate the old doorbell */ 1971487f786SFrançois Tigeot doorbell->db_status = GUC_DOORBELL_DISABLED; 1981487f786SFrançois Tigeot (void)host2guc_release_doorbell(guc, client); 1991487f786SFrançois Tigeot __clear_bit(client->doorbell_id, doorbell_bitmap); 2001487f786SFrançois Tigeot } 2011487f786SFrançois Tigeot 2021487f786SFrançois Tigeot /* Update the GuC's idea of the doorbell ID */ 2031487f786SFrançois Tigeot len = sg_pcopy_to_buffer(sg->sgl, sg->nents, &desc, sizeof(desc), 2041487f786SFrançois Tigeot sizeof(desc) * client->ctx_index); 2051487f786SFrançois Tigeot if (len != sizeof(desc)) 2061487f786SFrançois Tigeot return -EFAULT; 2071487f786SFrançois Tigeot desc.db_id = new_id; 2081487f786SFrançois Tigeot len = sg_pcopy_from_buffer(sg->sgl, sg->nents, &desc, sizeof(desc), 2091487f786SFrançois Tigeot sizeof(desc) * client->ctx_index); 2101487f786SFrançois Tigeot if (len != sizeof(desc)) 2111487f786SFrançois Tigeot return -EFAULT; 2121487f786SFrançois Tigeot 2131487f786SFrançois Tigeot client->doorbell_id = new_id; 2141487f786SFrançois Tigeot if (new_id == GUC_INVALID_DOORBELL_ID) 2151487f786SFrançois Tigeot return 0; 2161487f786SFrançois Tigeot 2171487f786SFrançois Tigeot /* Activate the new doorbell */ 2181487f786SFrançois Tigeot __set_bit(new_id, doorbell_bitmap); 219352ff8bdSFrançois Tigeot doorbell->cookie = 0; 2201487f786SFrançois Tigeot doorbell->db_status = GUC_DOORBELL_ENABLED; 2211487f786SFrançois Tigeot return host2guc_allocate_doorbell(guc, client); 222352ff8bdSFrançois Tigeot } 223352ff8bdSFrançois Tigeot 2241487f786SFrançois Tigeot static int guc_init_doorbell(struct intel_guc *guc, 2251487f786SFrançois Tigeot struct i915_guc_client *client, 2261487f786SFrançois Tigeot uint16_t db_id) 227352ff8bdSFrançois Tigeot { 2281487f786SFrançois Tigeot return guc_update_doorbell_id(guc, client, db_id); 229352ff8bdSFrançois Tigeot } 230352ff8bdSFrançois Tigeot 231352ff8bdSFrançois Tigeot static void guc_disable_doorbell(struct intel_guc *guc, 232352ff8bdSFrançois Tigeot struct i915_guc_client *client) 233352ff8bdSFrançois Tigeot { 2341487f786SFrançois Tigeot (void)guc_update_doorbell_id(guc, client, GUC_INVALID_DOORBELL_ID); 235352ff8bdSFrançois Tigeot 236352ff8bdSFrançois Tigeot /* XXX: wait for any interrupts */ 237352ff8bdSFrançois Tigeot /* XXX: wait for workqueue to drain */ 238352ff8bdSFrançois Tigeot } 239352ff8bdSFrançois Tigeot 2401487f786SFrançois Tigeot static uint16_t 2411487f786SFrançois Tigeot select_doorbell_register(struct intel_guc *guc, uint32_t priority) 2421487f786SFrançois Tigeot { 2431487f786SFrançois Tigeot /* 2441487f786SFrançois Tigeot * The bitmap tracks which doorbell registers are currently in use. 2451487f786SFrançois Tigeot * It is split into two halves; the first half is used for normal 2461487f786SFrançois Tigeot * priority contexts, the second half for high-priority ones. 2471487f786SFrançois Tigeot * Note that logically higher priorities are numerically less than 2481487f786SFrançois Tigeot * normal ones, so the test below means "is it high-priority?" 2491487f786SFrançois Tigeot */ 2501487f786SFrançois Tigeot const bool hi_pri = (priority <= GUC_CTX_PRIORITY_HIGH); 2511487f786SFrançois Tigeot const uint16_t half = GUC_MAX_DOORBELLS / 2; 2521487f786SFrançois Tigeot const uint16_t start = hi_pri ? half : 0; 2531487f786SFrançois Tigeot const uint16_t end = start + half; 2541487f786SFrançois Tigeot uint16_t id; 2551487f786SFrançois Tigeot 2561487f786SFrançois Tigeot id = find_next_zero_bit(guc->doorbell_bitmap, end, start); 2571487f786SFrançois Tigeot if (id == end) 2581487f786SFrançois Tigeot id = GUC_INVALID_DOORBELL_ID; 2591487f786SFrançois Tigeot 2601487f786SFrançois Tigeot DRM_DEBUG_DRIVER("assigned %s priority doorbell id 0x%x\n", 2611487f786SFrançois Tigeot hi_pri ? "high" : "normal", id); 2621487f786SFrançois Tigeot 2631487f786SFrançois Tigeot return id; 2641487f786SFrançois Tigeot } 2651487f786SFrançois Tigeot 266352ff8bdSFrançois Tigeot /* 267352ff8bdSFrançois Tigeot * Select, assign and relase doorbell cachelines 268352ff8bdSFrançois Tigeot * 269352ff8bdSFrançois Tigeot * These functions track which doorbell cachelines are in use. 270352ff8bdSFrançois Tigeot * The data they manipulate is protected by the host2guc lock. 271352ff8bdSFrançois Tigeot */ 272352ff8bdSFrançois Tigeot 273352ff8bdSFrançois Tigeot static uint32_t select_doorbell_cacheline(struct intel_guc *guc) 274352ff8bdSFrançois Tigeot { 275352ff8bdSFrançois Tigeot const uint32_t cacheline_size = cache_line_size(); 276352ff8bdSFrançois Tigeot uint32_t offset; 277352ff8bdSFrançois Tigeot 278352ff8bdSFrançois Tigeot /* Doorbell uses a single cache line within a page */ 279352ff8bdSFrançois Tigeot offset = offset_in_page(guc->db_cacheline); 280352ff8bdSFrançois Tigeot 281352ff8bdSFrançois Tigeot /* Moving to next cache line to reduce contention */ 282352ff8bdSFrançois Tigeot guc->db_cacheline += cacheline_size; 283352ff8bdSFrançois Tigeot 284352ff8bdSFrançois Tigeot DRM_DEBUG_DRIVER("selected doorbell cacheline 0x%x, next 0x%x, linesize %u\n", 285352ff8bdSFrançois Tigeot offset, guc->db_cacheline, cacheline_size); 286352ff8bdSFrançois Tigeot 287352ff8bdSFrançois Tigeot return offset; 288352ff8bdSFrançois Tigeot } 289352ff8bdSFrançois Tigeot 290352ff8bdSFrançois Tigeot /* 291352ff8bdSFrançois Tigeot * Initialise the process descriptor shared with the GuC firmware. 292352ff8bdSFrançois Tigeot */ 293352ff8bdSFrançois Tigeot static void guc_init_proc_desc(struct intel_guc *guc, 294352ff8bdSFrançois Tigeot struct i915_guc_client *client) 295352ff8bdSFrançois Tigeot { 296352ff8bdSFrançois Tigeot struct guc_process_desc *desc; 297352ff8bdSFrançois Tigeot 2981487f786SFrançois Tigeot desc = client->client_base + client->proc_desc_offset; 299352ff8bdSFrançois Tigeot 300352ff8bdSFrançois Tigeot memset(desc, 0, sizeof(*desc)); 301352ff8bdSFrançois Tigeot 302352ff8bdSFrançois Tigeot /* 303352ff8bdSFrançois Tigeot * XXX: pDoorbell and WQVBaseAddress are pointers in process address 304352ff8bdSFrançois Tigeot * space for ring3 clients (set them as in mmap_ioctl) or kernel 305352ff8bdSFrançois Tigeot * space for kernel clients (map on demand instead? May make debug 306352ff8bdSFrançois Tigeot * easier to have it mapped). 307352ff8bdSFrançois Tigeot */ 308352ff8bdSFrançois Tigeot desc->wq_base_addr = 0; 309352ff8bdSFrançois Tigeot desc->db_base_addr = 0; 310352ff8bdSFrançois Tigeot 311352ff8bdSFrançois Tigeot desc->context_id = client->ctx_index; 312352ff8bdSFrançois Tigeot desc->wq_size_bytes = client->wq_size; 313352ff8bdSFrançois Tigeot desc->wq_status = WQ_STATUS_ACTIVE; 314352ff8bdSFrançois Tigeot desc->priority = client->priority; 315352ff8bdSFrançois Tigeot } 316352ff8bdSFrançois Tigeot 317352ff8bdSFrançois Tigeot /* 318352ff8bdSFrançois Tigeot * Initialise/clear the context descriptor shared with the GuC firmware. 319352ff8bdSFrançois Tigeot * 320352ff8bdSFrançois Tigeot * This descriptor tells the GuC where (in GGTT space) to find the important 321352ff8bdSFrançois Tigeot * data structures relating to this client (doorbell, process descriptor, 322352ff8bdSFrançois Tigeot * write queue, etc). 323352ff8bdSFrançois Tigeot */ 324352ff8bdSFrançois Tigeot 325352ff8bdSFrançois Tigeot static void guc_init_ctx_desc(struct intel_guc *guc, 326352ff8bdSFrançois Tigeot struct i915_guc_client *client) 327352ff8bdSFrançois Tigeot { 3288621f407SFrançois Tigeot struct drm_i915_gem_object *client_obj = client->client_obj; 329c0e85e96SFrançois Tigeot struct drm_i915_private *dev_priv = guc_to_i915(guc); 3308621f407SFrançois Tigeot struct intel_engine_cs *engine; 3311487f786SFrançois Tigeot struct i915_gem_context *ctx = client->owner; 332352ff8bdSFrançois Tigeot struct guc_context_desc desc; 333352ff8bdSFrançois Tigeot struct sg_table *sg; 3348621f407SFrançois Tigeot u32 gfx_addr; 335352ff8bdSFrançois Tigeot 336352ff8bdSFrançois Tigeot memset(&desc, 0, sizeof(desc)); 337352ff8bdSFrançois Tigeot 338352ff8bdSFrançois Tigeot desc.attribute = GUC_CTX_DESC_ATTR_ACTIVE | GUC_CTX_DESC_ATTR_KERNEL; 339352ff8bdSFrançois Tigeot desc.context_id = client->ctx_index; 340352ff8bdSFrançois Tigeot desc.priority = client->priority; 341352ff8bdSFrançois Tigeot desc.db_id = client->doorbell_id; 342352ff8bdSFrançois Tigeot 3431487f786SFrançois Tigeot for_each_engine(engine, dev_priv) { 3441487f786SFrançois Tigeot struct intel_context *ce = &ctx->engine[engine->id]; 3458621f407SFrançois Tigeot struct guc_execlist_context *lrc = &desc.lrc[engine->guc_id]; 346352ff8bdSFrançois Tigeot struct drm_i915_gem_object *obj; 347352ff8bdSFrançois Tigeot 348352ff8bdSFrançois Tigeot /* TODO: We have a design issue to be solved here. Only when we 349352ff8bdSFrançois Tigeot * receive the first batch, we know which engine is used by the 350352ff8bdSFrançois Tigeot * user. But here GuC expects the lrc and ring to be pinned. It 351352ff8bdSFrançois Tigeot * is not an issue for default context, which is the only one 352352ff8bdSFrançois Tigeot * for now who owns a GuC client. But for future owner of GuC 353352ff8bdSFrançois Tigeot * client, need to make sure lrc is pinned prior to enter here. 354352ff8bdSFrançois Tigeot */ 3551487f786SFrançois Tigeot if (!ce->state) 356352ff8bdSFrançois Tigeot break; /* XXX: continue? */ 357352ff8bdSFrançois Tigeot 3581487f786SFrançois Tigeot lrc->context_desc = lower_32_bits(ce->lrc_desc); 359352ff8bdSFrançois Tigeot 360352ff8bdSFrançois Tigeot /* The state page is after PPHWSP */ 3611487f786SFrançois Tigeot gfx_addr = i915_gem_obj_ggtt_offset(ce->state); 3628621f407SFrançois Tigeot lrc->ring_lcra = gfx_addr + LRC_STATE_PN * PAGE_SIZE; 363352ff8bdSFrançois Tigeot lrc->context_id = (client->ctx_index << GUC_ELC_CTXID_OFFSET) | 3648621f407SFrançois Tigeot (engine->guc_id << GUC_ELC_ENGINE_OFFSET); 365352ff8bdSFrançois Tigeot 3661487f786SFrançois Tigeot obj = ce->ringbuf->obj; 3678621f407SFrançois Tigeot gfx_addr = i915_gem_obj_ggtt_offset(obj); 368352ff8bdSFrançois Tigeot 3698621f407SFrançois Tigeot lrc->ring_begin = gfx_addr; 3708621f407SFrançois Tigeot lrc->ring_end = gfx_addr + obj->base.size - 1; 3718621f407SFrançois Tigeot lrc->ring_next_free_location = gfx_addr; 372352ff8bdSFrançois Tigeot lrc->ring_current_tail_pointer_value = 0; 373352ff8bdSFrançois Tigeot 3748621f407SFrançois Tigeot desc.engines_used |= (1 << engine->guc_id); 375352ff8bdSFrançois Tigeot } 376352ff8bdSFrançois Tigeot 377352ff8bdSFrançois Tigeot WARN_ON(desc.engines_used == 0); 378352ff8bdSFrançois Tigeot 379352ff8bdSFrançois Tigeot /* 3808621f407SFrançois Tigeot * The doorbell, process descriptor, and workqueue are all parts 3818621f407SFrançois Tigeot * of the client object, which the GuC will reference via the GGTT 382352ff8bdSFrançois Tigeot */ 3838621f407SFrançois Tigeot gfx_addr = i915_gem_obj_ggtt_offset(client_obj); 3848621f407SFrançois Tigeot desc.db_trigger_phy = sg_dma_address(client_obj->pages->sgl) + 3858621f407SFrançois Tigeot client->doorbell_offset; 3868621f407SFrançois Tigeot desc.db_trigger_cpu = (uintptr_t)client->client_base + 3878621f407SFrançois Tigeot client->doorbell_offset; 3888621f407SFrançois Tigeot desc.db_trigger_uk = gfx_addr + client->doorbell_offset; 3898621f407SFrançois Tigeot desc.process_desc = gfx_addr + client->proc_desc_offset; 3908621f407SFrançois Tigeot desc.wq_addr = gfx_addr + client->wq_offset; 391352ff8bdSFrançois Tigeot desc.wq_size = client->wq_size; 392352ff8bdSFrançois Tigeot 393352ff8bdSFrançois Tigeot /* 3941487f786SFrançois Tigeot * XXX: Take LRCs from an existing context if this is not an 395352ff8bdSFrançois Tigeot * IsKMDCreatedContext client 396352ff8bdSFrançois Tigeot */ 397352ff8bdSFrançois Tigeot desc.desc_private = (uintptr_t)client; 398352ff8bdSFrançois Tigeot 399352ff8bdSFrançois Tigeot /* Pool context is pinned already */ 400352ff8bdSFrançois Tigeot sg = guc->ctx_pool_obj->pages; 401352ff8bdSFrançois Tigeot sg_pcopy_from_buffer(sg->sgl, sg->nents, &desc, sizeof(desc), 402352ff8bdSFrançois Tigeot sizeof(desc) * client->ctx_index); 403352ff8bdSFrançois Tigeot } 404352ff8bdSFrançois Tigeot 405352ff8bdSFrançois Tigeot static void guc_fini_ctx_desc(struct intel_guc *guc, 406352ff8bdSFrançois Tigeot struct i915_guc_client *client) 407352ff8bdSFrançois Tigeot { 408352ff8bdSFrançois Tigeot struct guc_context_desc desc; 409352ff8bdSFrançois Tigeot struct sg_table *sg; 410352ff8bdSFrançois Tigeot 411352ff8bdSFrançois Tigeot memset(&desc, 0, sizeof(desc)); 412352ff8bdSFrançois Tigeot 413352ff8bdSFrançois Tigeot sg = guc->ctx_pool_obj->pages; 414352ff8bdSFrançois Tigeot sg_pcopy_from_buffer(sg->sgl, sg->nents, &desc, sizeof(desc), 415352ff8bdSFrançois Tigeot sizeof(desc) * client->ctx_index); 416352ff8bdSFrançois Tigeot } 417352ff8bdSFrançois Tigeot 4181487f786SFrançois Tigeot /** 4191487f786SFrançois Tigeot * i915_guc_wq_check_space() - check that the GuC can accept a request 4201487f786SFrançois Tigeot * @request: request associated with the commands 4211487f786SFrançois Tigeot * 4221487f786SFrançois Tigeot * Return: 0 if space is available 4231487f786SFrançois Tigeot * -EAGAIN if space is not currently available 4241487f786SFrançois Tigeot * 4251487f786SFrançois Tigeot * This function must be called (and must return 0) before a request 4261487f786SFrançois Tigeot * is submitted to the GuC via i915_guc_submit() below. Once a result 4271487f786SFrançois Tigeot * of 0 has been returned, it remains valid until (but only until) 4281487f786SFrançois Tigeot * the next call to submit(). 4291487f786SFrançois Tigeot * 4301487f786SFrançois Tigeot * This precheck allows the caller to determine in advance that space 4311487f786SFrançois Tigeot * will be available for the next submission before committing resources 4321487f786SFrançois Tigeot * to it, and helps avoid late failures with complicated recovery paths. 4331487f786SFrançois Tigeot */ 4341487f786SFrançois Tigeot int i915_guc_wq_check_space(struct drm_i915_gem_request *request) 435352ff8bdSFrançois Tigeot { 4361487f786SFrançois Tigeot const size_t wqi_size = sizeof(struct guc_wq_item); 4371487f786SFrançois Tigeot struct i915_guc_client *gc = request->i915->guc.execbuf_client; 438352ff8bdSFrançois Tigeot struct guc_process_desc *desc; 4391487f786SFrançois Tigeot u32 freespace; 440352ff8bdSFrançois Tigeot 4411487f786SFrançois Tigeot GEM_BUG_ON(gc == NULL); 4421487f786SFrançois Tigeot 4431487f786SFrançois Tigeot desc = gc->client_base + gc->proc_desc_offset; 4441487f786SFrançois Tigeot 4451487f786SFrançois Tigeot freespace = CIRC_SPACE(gc->wq_tail, desc->head, gc->wq_size); 4461487f786SFrançois Tigeot if (likely(freespace >= wqi_size)) 447c0e85e96SFrançois Tigeot return 0; 448c0e85e96SFrançois Tigeot 4491487f786SFrançois Tigeot gc->no_wq_space += 1; 450352ff8bdSFrançois Tigeot 4511487f786SFrançois Tigeot return -EAGAIN; 452352ff8bdSFrançois Tigeot } 453aee94f86SFrançois Tigeot 4541487f786SFrançois Tigeot static void guc_add_workqueue_item(struct i915_guc_client *gc, 455352ff8bdSFrançois Tigeot struct drm_i915_gem_request *rq) 456352ff8bdSFrançois Tigeot { 4571487f786SFrançois Tigeot /* wqi_len is in DWords, and does not include the one-word header */ 4581487f786SFrançois Tigeot const size_t wqi_size = sizeof(struct guc_wq_item); 4591487f786SFrançois Tigeot const u32 wqi_len = wqi_size/sizeof(u32) - 1; 4608621f407SFrançois Tigeot struct guc_process_desc *desc; 461352ff8bdSFrançois Tigeot struct guc_wq_item *wqi; 462352ff8bdSFrançois Tigeot void *base; 4631487f786SFrançois Tigeot u32 freespace, tail, wq_off, wq_page; 464352ff8bdSFrançois Tigeot 4651487f786SFrançois Tigeot desc = gc->client_base + gc->proc_desc_offset; 466c0e85e96SFrançois Tigeot 4671487f786SFrançois Tigeot /* Free space is guaranteed, see i915_guc_wq_check_space() above */ 4681487f786SFrançois Tigeot freespace = CIRC_SPACE(gc->wq_tail, desc->head, gc->wq_size); 4691487f786SFrançois Tigeot GEM_BUG_ON(freespace < wqi_size); 4701487f786SFrançois Tigeot 4711487f786SFrançois Tigeot /* The GuC firmware wants the tail index in QWords, not bytes */ 4721487f786SFrançois Tigeot tail = rq->tail; 4731487f786SFrançois Tigeot GEM_BUG_ON(tail & 7); 4741487f786SFrançois Tigeot tail >>= 3; 4751487f786SFrançois Tigeot GEM_BUG_ON(tail > WQ_RING_TAIL_MAX); 476352ff8bdSFrançois Tigeot 477352ff8bdSFrançois Tigeot /* For now workqueue item is 4 DWs; workqueue buffer is 2 pages. So we 478352ff8bdSFrançois Tigeot * should not have the case where structure wqi is across page, neither 479352ff8bdSFrançois Tigeot * wrapped to the beginning. This simplifies the implementation below. 480352ff8bdSFrançois Tigeot * 481352ff8bdSFrançois Tigeot * XXX: if not the case, we need save data to a temp wqi and copy it to 482352ff8bdSFrançois Tigeot * workqueue buffer dw by dw. 483352ff8bdSFrançois Tigeot */ 4841487f786SFrançois Tigeot BUILD_BUG_ON(wqi_size != 16); 485352ff8bdSFrançois Tigeot 4861487f786SFrançois Tigeot /* postincrement WQ tail for next time */ 4871487f786SFrançois Tigeot wq_off = gc->wq_tail; 4881487f786SFrançois Tigeot gc->wq_tail += wqi_size; 4891487f786SFrançois Tigeot gc->wq_tail &= gc->wq_size - 1; 4901487f786SFrançois Tigeot GEM_BUG_ON(wq_off & (wqi_size - 1)); 4911487f786SFrançois Tigeot 4921487f786SFrançois Tigeot /* WQ starts from the page after doorbell / process_desc */ 4931487f786SFrançois Tigeot wq_page = (wq_off + GUC_DB_SIZE) >> PAGE_SHIFT; 494352ff8bdSFrançois Tigeot wq_off &= PAGE_SIZE - 1; 4951487f786SFrançois Tigeot base = kmap_atomic(i915_gem_object_get_page(gc->client_obj, wq_page)); 496352ff8bdSFrançois Tigeot wqi = (struct guc_wq_item *)((char *)base + wq_off); 497352ff8bdSFrançois Tigeot 4981487f786SFrançois Tigeot /* Now fill in the 4-word work queue item */ 499352ff8bdSFrançois Tigeot wqi->header = WQ_TYPE_INORDER | 5001487f786SFrançois Tigeot (wqi_len << WQ_LEN_SHIFT) | 5018621f407SFrançois Tigeot (rq->engine->guc_id << WQ_TARGET_SHIFT) | 502352ff8bdSFrançois Tigeot WQ_NO_WCFLUSH_WAIT; 503352ff8bdSFrançois Tigeot 504352ff8bdSFrançois Tigeot /* The GuC wants only the low-order word of the context descriptor */ 5058621f407SFrançois Tigeot wqi->context_desc = (u32)intel_lr_context_descriptor(rq->ctx, 5068621f407SFrançois Tigeot rq->engine); 507352ff8bdSFrançois Tigeot 508352ff8bdSFrançois Tigeot wqi->ring_tail = tail << WQ_RING_TAIL_SHIFT; 5091487f786SFrançois Tigeot wqi->fence_id = rq->seqno; 510352ff8bdSFrançois Tigeot 511352ff8bdSFrançois Tigeot kunmap_atomic(base); 5121487f786SFrançois Tigeot } 513352ff8bdSFrançois Tigeot 5141487f786SFrançois Tigeot static int guc_ring_doorbell(struct i915_guc_client *gc) 5151487f786SFrançois Tigeot { 5161487f786SFrançois Tigeot struct guc_process_desc *desc; 5171487f786SFrançois Tigeot union guc_doorbell_qw db_cmp, db_exc, db_ret; 5181487f786SFrançois Tigeot union guc_doorbell_qw *db; 5191487f786SFrançois Tigeot int attempt = 2, ret = -EAGAIN; 5201487f786SFrançois Tigeot 5211487f786SFrançois Tigeot desc = gc->client_base + gc->proc_desc_offset; 5221487f786SFrançois Tigeot 5231487f786SFrançois Tigeot /* Update the tail so it is visible to GuC */ 5241487f786SFrançois Tigeot desc->tail = gc->wq_tail; 5251487f786SFrançois Tigeot 5261487f786SFrançois Tigeot /* current cookie */ 5271487f786SFrançois Tigeot db_cmp.db_status = GUC_DOORBELL_ENABLED; 5281487f786SFrançois Tigeot db_cmp.cookie = gc->cookie; 5291487f786SFrançois Tigeot 5301487f786SFrançois Tigeot /* cookie to be updated */ 5311487f786SFrançois Tigeot db_exc.db_status = GUC_DOORBELL_ENABLED; 5321487f786SFrançois Tigeot db_exc.cookie = gc->cookie + 1; 5331487f786SFrançois Tigeot if (db_exc.cookie == 0) 5341487f786SFrançois Tigeot db_exc.cookie = 1; 5351487f786SFrançois Tigeot 5361487f786SFrançois Tigeot /* pointer of current doorbell cacheline */ 5371487f786SFrançois Tigeot db = gc->client_base + gc->doorbell_offset; 5381487f786SFrançois Tigeot 5391487f786SFrançois Tigeot while (attempt--) { 5401487f786SFrançois Tigeot /* lets ring the doorbell */ 5411487f786SFrançois Tigeot db_ret.value_qw = atomic64_cmpxchg((atomic64_t *)db, 5421487f786SFrançois Tigeot db_cmp.value_qw, db_exc.value_qw); 5431487f786SFrançois Tigeot 5441487f786SFrançois Tigeot /* if the exchange was successfully executed */ 5451487f786SFrançois Tigeot if (db_ret.value_qw == db_cmp.value_qw) { 5461487f786SFrançois Tigeot /* db was successfully rung */ 5471487f786SFrançois Tigeot gc->cookie = db_exc.cookie; 5481487f786SFrançois Tigeot ret = 0; 5491487f786SFrançois Tigeot break; 5501487f786SFrançois Tigeot } 5511487f786SFrançois Tigeot 5521487f786SFrançois Tigeot /* XXX: doorbell was lost and need to acquire it again */ 5531487f786SFrançois Tigeot if (db_ret.db_status == GUC_DOORBELL_DISABLED) 5541487f786SFrançois Tigeot break; 5551487f786SFrançois Tigeot 5561487f786SFrançois Tigeot DRM_ERROR("Cookie mismatch. Expected %d, returned %d\n", 5571487f786SFrançois Tigeot db_cmp.cookie, db_ret.cookie); 5581487f786SFrançois Tigeot 5591487f786SFrançois Tigeot /* update the cookie to newly read cookie from GuC */ 5601487f786SFrançois Tigeot db_cmp.cookie = db_ret.cookie; 5611487f786SFrançois Tigeot db_exc.cookie = db_ret.cookie + 1; 5621487f786SFrançois Tigeot if (db_exc.cookie == 0) 5631487f786SFrançois Tigeot db_exc.cookie = 1; 5641487f786SFrançois Tigeot } 5651487f786SFrançois Tigeot 5661487f786SFrançois Tigeot return ret; 567352ff8bdSFrançois Tigeot } 568352ff8bdSFrançois Tigeot 569352ff8bdSFrançois Tigeot /** 570352ff8bdSFrançois Tigeot * i915_guc_submit() - Submit commands through GuC 571aee94f86SFrançois Tigeot * @rq: request associated with the commands 572352ff8bdSFrançois Tigeot * 5731487f786SFrançois Tigeot * Return: 0 on success, otherwise an errno. 5741487f786SFrançois Tigeot * (Note: nonzero really shouldn't happen!) 5751487f786SFrançois Tigeot * 5761487f786SFrançois Tigeot * The caller must have already called i915_guc_wq_check_space() above 5771487f786SFrançois Tigeot * with a result of 0 (success) since the last request submission. This 5781487f786SFrançois Tigeot * guarantees that there is space in the work queue for the new request, 5791487f786SFrançois Tigeot * so enqueuing the item cannot fail. 5801487f786SFrançois Tigeot * 5811487f786SFrançois Tigeot * Bad Things Will Happen if the caller violates this protocol e.g. calls 5821487f786SFrançois Tigeot * submit() when check() says there's no space, or calls submit() multiple 5831487f786SFrançois Tigeot * times with no intervening check(). 5841487f786SFrançois Tigeot * 5851487f786SFrançois Tigeot * The only error here arises if the doorbell hardware isn't functioning 5861487f786SFrançois Tigeot * as expected, which really shouln't happen. 587352ff8bdSFrançois Tigeot */ 5881487f786SFrançois Tigeot int i915_guc_submit(struct drm_i915_gem_request *rq) 589352ff8bdSFrançois Tigeot { 5901487f786SFrançois Tigeot unsigned int engine_id = rq->engine->id; 5911487f786SFrançois Tigeot struct intel_guc *guc = &rq->i915->guc; 5921487f786SFrançois Tigeot struct i915_guc_client *client = guc->execbuf_client; 5931487f786SFrançois Tigeot int b_ret; 594352ff8bdSFrançois Tigeot 5951487f786SFrançois Tigeot guc_add_workqueue_item(client, rq); 596352ff8bdSFrançois Tigeot b_ret = guc_ring_doorbell(client); 597352ff8bdSFrançois Tigeot 598c0e85e96SFrançois Tigeot client->submissions[engine_id] += 1; 5991487f786SFrançois Tigeot client->retcode = b_ret; 6001487f786SFrançois Tigeot if (b_ret) 601352ff8bdSFrançois Tigeot client->b_fail += 1; 6021487f786SFrançois Tigeot 603c0e85e96SFrançois Tigeot guc->submissions[engine_id] += 1; 604c0e85e96SFrançois Tigeot guc->last_seqno[engine_id] = rq->seqno; 605352ff8bdSFrançois Tigeot 6061487f786SFrançois Tigeot return b_ret; 607352ff8bdSFrançois Tigeot } 608352ff8bdSFrançois Tigeot 609352ff8bdSFrançois Tigeot /* 610352ff8bdSFrançois Tigeot * Everything below here is concerned with setup & teardown, and is 611352ff8bdSFrançois Tigeot * therefore not part of the somewhat time-critical batch-submission 612352ff8bdSFrançois Tigeot * path of i915_guc_submit() above. 613352ff8bdSFrançois Tigeot */ 614352ff8bdSFrançois Tigeot 615352ff8bdSFrançois Tigeot /** 616352ff8bdSFrançois Tigeot * gem_allocate_guc_obj() - Allocate gem object for GuC usage 6171487f786SFrançois Tigeot * @dev_priv: driver private data structure 618352ff8bdSFrançois Tigeot * @size: size of object 619352ff8bdSFrançois Tigeot * 620352ff8bdSFrançois Tigeot * This is a wrapper to create a gem obj. In order to use it inside GuC, the 621352ff8bdSFrançois Tigeot * object needs to be pinned lifetime. Also we must pin it to gtt space other 622352ff8bdSFrançois Tigeot * than [0, GUC_WOPCM_TOP) because this range is reserved inside GuC. 623352ff8bdSFrançois Tigeot * 624352ff8bdSFrançois Tigeot * Return: A drm_i915_gem_object if successful, otherwise NULL. 625352ff8bdSFrançois Tigeot */ 6261487f786SFrançois Tigeot static struct drm_i915_gem_object * 6271487f786SFrançois Tigeot gem_allocate_guc_obj(struct drm_i915_private *dev_priv, u32 size) 628352ff8bdSFrançois Tigeot { 629352ff8bdSFrançois Tigeot struct drm_i915_gem_object *obj; 630352ff8bdSFrançois Tigeot 631*303bf270SFrançois Tigeot obj = i915_gem_object_create(&dev_priv->drm, size); 6321487f786SFrançois Tigeot if (IS_ERR(obj)) 633352ff8bdSFrançois Tigeot return NULL; 634352ff8bdSFrançois Tigeot 635352ff8bdSFrançois Tigeot if (i915_gem_object_get_pages(obj)) { 636352ff8bdSFrançois Tigeot drm_gem_object_unreference(&obj->base); 637352ff8bdSFrançois Tigeot return NULL; 638352ff8bdSFrançois Tigeot } 639352ff8bdSFrançois Tigeot 640352ff8bdSFrançois Tigeot if (i915_gem_obj_ggtt_pin(obj, PAGE_SIZE, 641352ff8bdSFrançois Tigeot PIN_OFFSET_BIAS | GUC_WOPCM_TOP)) { 642352ff8bdSFrançois Tigeot drm_gem_object_unreference(&obj->base); 643352ff8bdSFrançois Tigeot return NULL; 644352ff8bdSFrançois Tigeot } 645352ff8bdSFrançois Tigeot 646352ff8bdSFrançois Tigeot /* Invalidate GuC TLB to let GuC take the latest updates to GTT. */ 647352ff8bdSFrançois Tigeot I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE); 648352ff8bdSFrançois Tigeot 649352ff8bdSFrançois Tigeot return obj; 650352ff8bdSFrançois Tigeot } 651352ff8bdSFrançois Tigeot 652352ff8bdSFrançois Tigeot /** 653352ff8bdSFrançois Tigeot * gem_release_guc_obj() - Release gem object allocated for GuC usage 654352ff8bdSFrançois Tigeot * @obj: gem obj to be released 655352ff8bdSFrançois Tigeot */ 656352ff8bdSFrançois Tigeot static void gem_release_guc_obj(struct drm_i915_gem_object *obj) 657352ff8bdSFrançois Tigeot { 658352ff8bdSFrançois Tigeot if (!obj) 659352ff8bdSFrançois Tigeot return; 660352ff8bdSFrançois Tigeot 661352ff8bdSFrançois Tigeot if (i915_gem_obj_is_pinned(obj)) 662352ff8bdSFrançois Tigeot i915_gem_object_ggtt_unpin(obj); 663352ff8bdSFrançois Tigeot 664352ff8bdSFrançois Tigeot drm_gem_object_unreference(&obj->base); 665352ff8bdSFrançois Tigeot } 666352ff8bdSFrançois Tigeot 6671487f786SFrançois Tigeot static void 6681487f786SFrançois Tigeot guc_client_free(struct drm_i915_private *dev_priv, 669352ff8bdSFrançois Tigeot struct i915_guc_client *client) 670352ff8bdSFrançois Tigeot { 671352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 672352ff8bdSFrançois Tigeot 673352ff8bdSFrançois Tigeot if (!client) 674352ff8bdSFrançois Tigeot return; 675352ff8bdSFrançois Tigeot 676352ff8bdSFrançois Tigeot /* 6778621f407SFrançois Tigeot * XXX: wait for any outstanding submissions before freeing memory. 6788621f407SFrançois Tigeot * Be sure to drop any locks 679352ff8bdSFrançois Tigeot */ 6808621f407SFrançois Tigeot 6818621f407SFrançois Tigeot if (client->client_base) { 6828621f407SFrançois Tigeot /* 6831487f786SFrançois Tigeot * If we got as far as setting up a doorbell, make sure we 6841487f786SFrançois Tigeot * shut it down before unmapping & deallocating the memory. 6858621f407SFrançois Tigeot */ 686352ff8bdSFrançois Tigeot guc_disable_doorbell(guc, client); 687352ff8bdSFrançois Tigeot 6888621f407SFrançois Tigeot kunmap(kmap_to_page(client->client_base)); 6898621f407SFrançois Tigeot } 690352ff8bdSFrançois Tigeot 691352ff8bdSFrançois Tigeot gem_release_guc_obj(client->client_obj); 692352ff8bdSFrançois Tigeot 693352ff8bdSFrançois Tigeot if (client->ctx_index != GUC_INVALID_CTX_ID) { 694352ff8bdSFrançois Tigeot guc_fini_ctx_desc(guc, client); 695352ff8bdSFrançois Tigeot ida_simple_remove(&guc->ctx_ids, client->ctx_index); 696352ff8bdSFrançois Tigeot } 697352ff8bdSFrançois Tigeot 698352ff8bdSFrançois Tigeot kfree(client); 699352ff8bdSFrançois Tigeot } 700352ff8bdSFrançois Tigeot 7011487f786SFrançois Tigeot /* 7021487f786SFrançois Tigeot * Borrow the first client to set up & tear down every doorbell 7031487f786SFrançois Tigeot * in turn, to ensure that all doorbell h/w is (re)initialised. 7041487f786SFrançois Tigeot */ 7051487f786SFrançois Tigeot static void guc_init_doorbell_hw(struct intel_guc *guc) 7061487f786SFrançois Tigeot { 7071487f786SFrançois Tigeot struct drm_i915_private *dev_priv = guc_to_i915(guc); 7081487f786SFrançois Tigeot struct i915_guc_client *client = guc->execbuf_client; 7091487f786SFrançois Tigeot uint16_t db_id, i; 7101487f786SFrançois Tigeot int err; 7111487f786SFrançois Tigeot 7121487f786SFrançois Tigeot db_id = client->doorbell_id; 7131487f786SFrançois Tigeot 7141487f786SFrançois Tigeot for (i = 0; i < GUC_MAX_DOORBELLS; ++i) { 7151487f786SFrançois Tigeot i915_reg_t drbreg = GEN8_DRBREGL(i); 7161487f786SFrançois Tigeot u32 value = I915_READ(drbreg); 7171487f786SFrançois Tigeot 7181487f786SFrançois Tigeot err = guc_update_doorbell_id(guc, client, i); 7191487f786SFrançois Tigeot 7201487f786SFrançois Tigeot /* Report update failure or unexpectedly active doorbell */ 7211487f786SFrançois Tigeot if (err || (i != db_id && (value & GUC_DOORBELL_ENABLED))) 7221487f786SFrançois Tigeot DRM_DEBUG_DRIVER("Doorbell %d (reg 0x%x) was 0x%x, err %d\n", 7231487f786SFrançois Tigeot i, drbreg.reg, value, err); 7241487f786SFrançois Tigeot } 7251487f786SFrançois Tigeot 7261487f786SFrançois Tigeot /* Restore to original value */ 7271487f786SFrançois Tigeot err = guc_update_doorbell_id(guc, client, db_id); 7281487f786SFrançois Tigeot if (err) 7291487f786SFrançois Tigeot DRM_ERROR("Failed to restore doorbell to %d, err %d\n", 7301487f786SFrançois Tigeot db_id, err); 7311487f786SFrançois Tigeot 7321487f786SFrançois Tigeot for (i = 0; i < GUC_MAX_DOORBELLS; ++i) { 7331487f786SFrançois Tigeot i915_reg_t drbreg = GEN8_DRBREGL(i); 7341487f786SFrançois Tigeot u32 value = I915_READ(drbreg); 7351487f786SFrançois Tigeot 7361487f786SFrançois Tigeot if (i != db_id && (value & GUC_DOORBELL_ENABLED)) 7371487f786SFrançois Tigeot DRM_DEBUG_DRIVER("Doorbell %d (reg 0x%x) finally 0x%x\n", 7381487f786SFrançois Tigeot i, drbreg.reg, value); 7391487f786SFrançois Tigeot 7401487f786SFrançois Tigeot } 7411487f786SFrançois Tigeot } 7421487f786SFrançois Tigeot 743352ff8bdSFrançois Tigeot /** 744352ff8bdSFrançois Tigeot * guc_client_alloc() - Allocate an i915_guc_client 7451487f786SFrançois Tigeot * @dev_priv: driver private data structure 746352ff8bdSFrançois Tigeot * @priority: four levels priority _CRITICAL, _HIGH, _NORMAL and _LOW 747352ff8bdSFrançois Tigeot * The kernel client to replace ExecList submission is created with 748352ff8bdSFrançois Tigeot * NORMAL priority. Priority of a client for scheduler can be HIGH, 749352ff8bdSFrançois Tigeot * while a preemption context can use CRITICAL. 750aee94f86SFrançois Tigeot * @ctx: the context that owns the client (we use the default render 751aee94f86SFrançois Tigeot * context) 752352ff8bdSFrançois Tigeot * 7538621f407SFrançois Tigeot * Return: An i915_guc_client object if success, else NULL. 754352ff8bdSFrançois Tigeot */ 7551487f786SFrançois Tigeot static struct i915_guc_client * 7561487f786SFrançois Tigeot guc_client_alloc(struct drm_i915_private *dev_priv, 757352ff8bdSFrançois Tigeot uint32_t priority, 7581487f786SFrançois Tigeot struct i915_gem_context *ctx) 759352ff8bdSFrançois Tigeot { 760352ff8bdSFrançois Tigeot struct i915_guc_client *client; 761352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 762352ff8bdSFrançois Tigeot struct drm_i915_gem_object *obj; 7631487f786SFrançois Tigeot uint16_t db_id; 764352ff8bdSFrançois Tigeot 765352ff8bdSFrançois Tigeot client = kzalloc(sizeof(*client), GFP_KERNEL); 766352ff8bdSFrançois Tigeot if (!client) 767352ff8bdSFrançois Tigeot return NULL; 768352ff8bdSFrançois Tigeot 769352ff8bdSFrançois Tigeot client->doorbell_id = GUC_INVALID_DOORBELL_ID; 770352ff8bdSFrançois Tigeot client->priority = priority; 771352ff8bdSFrançois Tigeot client->owner = ctx; 772352ff8bdSFrançois Tigeot client->guc = guc; 773352ff8bdSFrançois Tigeot 774352ff8bdSFrançois Tigeot client->ctx_index = (uint32_t)ida_simple_get(&guc->ctx_ids, 0, 775352ff8bdSFrançois Tigeot GUC_MAX_GPU_CONTEXTS, GFP_KERNEL); 776352ff8bdSFrançois Tigeot if (client->ctx_index >= GUC_MAX_GPU_CONTEXTS) { 777352ff8bdSFrançois Tigeot client->ctx_index = GUC_INVALID_CTX_ID; 778352ff8bdSFrançois Tigeot goto err; 779352ff8bdSFrançois Tigeot } 780352ff8bdSFrançois Tigeot 781352ff8bdSFrançois Tigeot /* The first page is doorbell/proc_desc. Two followed pages are wq. */ 7821487f786SFrançois Tigeot obj = gem_allocate_guc_obj(dev_priv, GUC_DB_SIZE + GUC_WQ_SIZE); 783352ff8bdSFrançois Tigeot if (!obj) 784352ff8bdSFrançois Tigeot goto err; 785352ff8bdSFrançois Tigeot 7868621f407SFrançois Tigeot /* We'll keep just the first (doorbell/proc) page permanently kmap'd. */ 787352ff8bdSFrançois Tigeot client->client_obj = obj; 7888621f407SFrançois Tigeot client->client_base = kmap(i915_gem_object_get_page(obj, 0)); 789352ff8bdSFrançois Tigeot client->wq_offset = GUC_DB_SIZE; 790352ff8bdSFrançois Tigeot client->wq_size = GUC_WQ_SIZE; 791352ff8bdSFrançois Tigeot 7921487f786SFrançois Tigeot db_id = select_doorbell_register(guc, client->priority); 7931487f786SFrançois Tigeot if (db_id == GUC_INVALID_DOORBELL_ID) 7941487f786SFrançois Tigeot /* XXX: evict a doorbell instead? */ 7951487f786SFrançois Tigeot goto err; 7961487f786SFrançois Tigeot 797352ff8bdSFrançois Tigeot client->doorbell_offset = select_doorbell_cacheline(guc); 798352ff8bdSFrançois Tigeot 799352ff8bdSFrançois Tigeot /* 800352ff8bdSFrançois Tigeot * Since the doorbell only requires a single cacheline, we can save 801352ff8bdSFrançois Tigeot * space by putting the application process descriptor in the same 802352ff8bdSFrançois Tigeot * page. Use the half of the page that doesn't include the doorbell. 803352ff8bdSFrançois Tigeot */ 804352ff8bdSFrançois Tigeot if (client->doorbell_offset >= (GUC_DB_SIZE / 2)) 805352ff8bdSFrançois Tigeot client->proc_desc_offset = 0; 806352ff8bdSFrançois Tigeot else 807352ff8bdSFrançois Tigeot client->proc_desc_offset = (GUC_DB_SIZE / 2); 808352ff8bdSFrançois Tigeot 809352ff8bdSFrançois Tigeot guc_init_proc_desc(guc, client); 810352ff8bdSFrançois Tigeot guc_init_ctx_desc(guc, client); 8111487f786SFrançois Tigeot if (guc_init_doorbell(guc, client, db_id)) 812352ff8bdSFrançois Tigeot goto err; 813352ff8bdSFrançois Tigeot 8141487f786SFrançois Tigeot DRM_DEBUG_DRIVER("new priority %u client %p: ctx_index %u\n", 8151487f786SFrançois Tigeot priority, client, client->ctx_index); 8161487f786SFrançois Tigeot DRM_DEBUG_DRIVER("doorbell id %u, cacheline offset 0x%x\n", 8171487f786SFrançois Tigeot client->doorbell_id, client->doorbell_offset); 818352ff8bdSFrançois Tigeot 819352ff8bdSFrançois Tigeot return client; 820352ff8bdSFrançois Tigeot 821352ff8bdSFrançois Tigeot err: 822352ff8bdSFrançois Tigeot DRM_ERROR("FAILED to create priority %u GuC client!\n", priority); 823352ff8bdSFrançois Tigeot 8241487f786SFrançois Tigeot guc_client_free(dev_priv, client); 825352ff8bdSFrançois Tigeot return NULL; 826352ff8bdSFrançois Tigeot } 827352ff8bdSFrançois Tigeot 828352ff8bdSFrançois Tigeot static void guc_create_log(struct intel_guc *guc) 829352ff8bdSFrançois Tigeot { 830352ff8bdSFrançois Tigeot struct drm_i915_private *dev_priv = guc_to_i915(guc); 831352ff8bdSFrançois Tigeot struct drm_i915_gem_object *obj; 832352ff8bdSFrançois Tigeot unsigned long offset; 833352ff8bdSFrançois Tigeot uint32_t size, flags; 834352ff8bdSFrançois Tigeot 835352ff8bdSFrançois Tigeot if (i915.guc_log_level < GUC_LOG_VERBOSITY_MIN) 836352ff8bdSFrançois Tigeot return; 837352ff8bdSFrançois Tigeot 838352ff8bdSFrançois Tigeot if (i915.guc_log_level > GUC_LOG_VERBOSITY_MAX) 839352ff8bdSFrançois Tigeot i915.guc_log_level = GUC_LOG_VERBOSITY_MAX; 840352ff8bdSFrançois Tigeot 841352ff8bdSFrançois Tigeot /* The first page is to save log buffer state. Allocate one 842352ff8bdSFrançois Tigeot * extra page for others in case for overlap */ 843352ff8bdSFrançois Tigeot size = (1 + GUC_LOG_DPC_PAGES + 1 + 844352ff8bdSFrançois Tigeot GUC_LOG_ISR_PAGES + 1 + 845352ff8bdSFrançois Tigeot GUC_LOG_CRASH_PAGES + 1) << PAGE_SHIFT; 846352ff8bdSFrançois Tigeot 847352ff8bdSFrançois Tigeot obj = guc->log_obj; 848352ff8bdSFrançois Tigeot if (!obj) { 8491487f786SFrançois Tigeot obj = gem_allocate_guc_obj(dev_priv, size); 850352ff8bdSFrançois Tigeot if (!obj) { 851352ff8bdSFrançois Tigeot /* logging will be off */ 852352ff8bdSFrançois Tigeot i915.guc_log_level = -1; 853352ff8bdSFrançois Tigeot return; 854352ff8bdSFrançois Tigeot } 855352ff8bdSFrançois Tigeot 856352ff8bdSFrançois Tigeot guc->log_obj = obj; 857352ff8bdSFrançois Tigeot } 858352ff8bdSFrançois Tigeot 859352ff8bdSFrançois Tigeot /* each allocated unit is a page */ 860352ff8bdSFrançois Tigeot flags = GUC_LOG_VALID | GUC_LOG_NOTIFY_ON_HALF_FULL | 861352ff8bdSFrançois Tigeot (GUC_LOG_DPC_PAGES << GUC_LOG_DPC_SHIFT) | 862352ff8bdSFrançois Tigeot (GUC_LOG_ISR_PAGES << GUC_LOG_ISR_SHIFT) | 863352ff8bdSFrançois Tigeot (GUC_LOG_CRASH_PAGES << GUC_LOG_CRASH_SHIFT); 864352ff8bdSFrançois Tigeot 865352ff8bdSFrançois Tigeot offset = i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT; /* in pages */ 866352ff8bdSFrançois Tigeot guc->log_flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags; 867352ff8bdSFrançois Tigeot } 868352ff8bdSFrançois Tigeot 869c0e85e96SFrançois Tigeot static void init_guc_policies(struct guc_policies *policies) 870c0e85e96SFrançois Tigeot { 871c0e85e96SFrançois Tigeot struct guc_policy *policy; 872c0e85e96SFrançois Tigeot u32 p, i; 873c0e85e96SFrançois Tigeot 874c0e85e96SFrançois Tigeot policies->dpc_promote_time = 500000; 875c0e85e96SFrançois Tigeot policies->max_num_work_items = POLICY_MAX_NUM_WI; 876c0e85e96SFrançois Tigeot 877c0e85e96SFrançois Tigeot for (p = 0; p < GUC_CTX_PRIORITY_NUM; p++) { 878c0e85e96SFrançois Tigeot for (i = GUC_RENDER_ENGINE; i < GUC_MAX_ENGINES_NUM; i++) { 879c0e85e96SFrançois Tigeot policy = &policies->policy[p][i]; 880c0e85e96SFrançois Tigeot 881c0e85e96SFrançois Tigeot policy->execution_quantum = 1000000; 882c0e85e96SFrançois Tigeot policy->preemption_time = 500000; 883c0e85e96SFrançois Tigeot policy->fault_time = 250000; 884c0e85e96SFrançois Tigeot policy->policy_flags = 0; 885c0e85e96SFrançois Tigeot } 886c0e85e96SFrançois Tigeot } 887c0e85e96SFrançois Tigeot 888c0e85e96SFrançois Tigeot policies->is_valid = 1; 889c0e85e96SFrançois Tigeot } 890c0e85e96SFrançois Tigeot 891c0e85e96SFrançois Tigeot static void guc_create_ads(struct intel_guc *guc) 892c0e85e96SFrançois Tigeot { 893c0e85e96SFrançois Tigeot struct drm_i915_private *dev_priv = guc_to_i915(guc); 894c0e85e96SFrançois Tigeot struct drm_i915_gem_object *obj; 895c0e85e96SFrançois Tigeot struct guc_ads *ads; 896c0e85e96SFrançois Tigeot struct guc_policies *policies; 897c0e85e96SFrançois Tigeot struct guc_mmio_reg_state *reg_state; 8988621f407SFrançois Tigeot struct intel_engine_cs *engine; 899f0bba3d1SFrançois Tigeot struct page *page; 9008621f407SFrançois Tigeot u32 size; 901c0e85e96SFrançois Tigeot 902c0e85e96SFrançois Tigeot /* The ads obj includes the struct itself and buffers passed to GuC */ 903c0e85e96SFrançois Tigeot size = sizeof(struct guc_ads) + sizeof(struct guc_policies) + 904c0e85e96SFrançois Tigeot sizeof(struct guc_mmio_reg_state) + 905c0e85e96SFrançois Tigeot GUC_S3_SAVE_SPACE_PAGES * PAGE_SIZE; 906c0e85e96SFrançois Tigeot 907c0e85e96SFrançois Tigeot obj = guc->ads_obj; 908c0e85e96SFrançois Tigeot if (!obj) { 9091487f786SFrançois Tigeot obj = gem_allocate_guc_obj(dev_priv, PAGE_ALIGN(size)); 910c0e85e96SFrançois Tigeot if (!obj) 911c0e85e96SFrançois Tigeot return; 912c0e85e96SFrançois Tigeot 913c0e85e96SFrançois Tigeot guc->ads_obj = obj; 914c0e85e96SFrançois Tigeot } 915c0e85e96SFrançois Tigeot 916c0e85e96SFrançois Tigeot page = i915_gem_object_get_page(obj, 0); 917c0e85e96SFrançois Tigeot ads = kmap(page); 918c0e85e96SFrançois Tigeot 919c0e85e96SFrançois Tigeot /* 920c0e85e96SFrançois Tigeot * The GuC requires a "Golden Context" when it reinitialises 921c0e85e96SFrançois Tigeot * engines after a reset. Here we use the Render ring default 922c0e85e96SFrançois Tigeot * context, which must already exist and be pinned in the GGTT, 923c0e85e96SFrançois Tigeot * so its address won't change after we've told the GuC where 924c0e85e96SFrançois Tigeot * to find it. 925c0e85e96SFrançois Tigeot */ 9268621f407SFrançois Tigeot engine = &dev_priv->engine[RCS]; 9278621f407SFrançois Tigeot ads->golden_context_lrca = engine->status_page.gfx_addr; 928c0e85e96SFrançois Tigeot 9298621f407SFrançois Tigeot for_each_engine(engine, dev_priv) 9308621f407SFrançois Tigeot ads->eng_state_size[engine->guc_id] = intel_lr_context_size(engine); 931c0e85e96SFrançois Tigeot 932c0e85e96SFrançois Tigeot /* GuC scheduling policies */ 9331487f786SFrançois Tigeot policies = (void *)ads + sizeof(struct guc_ads); 934c0e85e96SFrançois Tigeot init_guc_policies(policies); 935c0e85e96SFrançois Tigeot 936c0e85e96SFrançois Tigeot ads->scheduler_policies = i915_gem_obj_ggtt_offset(obj) + 937c0e85e96SFrançois Tigeot sizeof(struct guc_ads); 938c0e85e96SFrançois Tigeot 939c0e85e96SFrançois Tigeot /* MMIO reg state */ 9401487f786SFrançois Tigeot reg_state = (void *)policies + sizeof(struct guc_policies); 941c0e85e96SFrançois Tigeot 9428621f407SFrançois Tigeot for_each_engine(engine, dev_priv) { 9438621f407SFrançois Tigeot reg_state->mmio_white_list[engine->guc_id].mmio_start = 9448621f407SFrançois Tigeot engine->mmio_base + GUC_MMIO_WHITE_LIST_START; 945c0e85e96SFrançois Tigeot 946c0e85e96SFrançois Tigeot /* Nothing to be saved or restored for now. */ 9478621f407SFrançois Tigeot reg_state->mmio_white_list[engine->guc_id].count = 0; 948c0e85e96SFrançois Tigeot } 949c0e85e96SFrançois Tigeot 950c0e85e96SFrançois Tigeot ads->reg_state_addr = ads->scheduler_policies + 951c0e85e96SFrançois Tigeot sizeof(struct guc_policies); 952c0e85e96SFrançois Tigeot 953c0e85e96SFrançois Tigeot ads->reg_state_buffer = ads->reg_state_addr + 954c0e85e96SFrançois Tigeot sizeof(struct guc_mmio_reg_state); 955c0e85e96SFrançois Tigeot 956c0e85e96SFrançois Tigeot kunmap(page); 957c0e85e96SFrançois Tigeot } 958c0e85e96SFrançois Tigeot 959352ff8bdSFrançois Tigeot /* 960352ff8bdSFrançois Tigeot * Set up the memory resources to be shared with the GuC. At this point, 961352ff8bdSFrançois Tigeot * we require just one object that can be mapped through the GGTT. 962352ff8bdSFrançois Tigeot */ 9631487f786SFrançois Tigeot int i915_guc_submission_init(struct drm_i915_private *dev_priv) 964352ff8bdSFrançois Tigeot { 965352ff8bdSFrançois Tigeot const size_t ctxsize = sizeof(struct guc_context_desc); 966352ff8bdSFrançois Tigeot const size_t poolsize = GUC_MAX_GPU_CONTEXTS * ctxsize; 967352ff8bdSFrançois Tigeot const size_t gemsize = round_up(poolsize, PAGE_SIZE); 968352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 969352ff8bdSFrançois Tigeot 9701487f786SFrançois Tigeot /* Wipe bitmap & delete client in case of reinitialisation */ 9711487f786SFrançois Tigeot bitmap_clear(guc->doorbell_bitmap, 0, GUC_MAX_DOORBELLS); 9721487f786SFrançois Tigeot i915_guc_submission_disable(dev_priv); 9731487f786SFrançois Tigeot 974352ff8bdSFrançois Tigeot if (!i915.enable_guc_submission) 975352ff8bdSFrançois Tigeot return 0; /* not enabled */ 976352ff8bdSFrançois Tigeot 977352ff8bdSFrançois Tigeot if (guc->ctx_pool_obj) 978352ff8bdSFrançois Tigeot return 0; /* already allocated */ 979352ff8bdSFrançois Tigeot 9801487f786SFrançois Tigeot guc->ctx_pool_obj = gem_allocate_guc_obj(dev_priv, gemsize); 981352ff8bdSFrançois Tigeot if (!guc->ctx_pool_obj) 982352ff8bdSFrançois Tigeot return -ENOMEM; 983352ff8bdSFrançois Tigeot 984352ff8bdSFrançois Tigeot ida_init(&guc->ctx_ids); 985352ff8bdSFrançois Tigeot guc_create_log(guc); 986c0e85e96SFrançois Tigeot guc_create_ads(guc); 987c0e85e96SFrançois Tigeot 988352ff8bdSFrançois Tigeot return 0; 989352ff8bdSFrançois Tigeot } 990352ff8bdSFrançois Tigeot 9911487f786SFrançois Tigeot int i915_guc_submission_enable(struct drm_i915_private *dev_priv) 992352ff8bdSFrançois Tigeot { 993352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 994352ff8bdSFrançois Tigeot struct i915_guc_client *client; 995352ff8bdSFrançois Tigeot 996352ff8bdSFrançois Tigeot /* client for execbuf submission */ 9971487f786SFrançois Tigeot client = guc_client_alloc(dev_priv, 9981487f786SFrançois Tigeot GUC_CTX_PRIORITY_KMD_NORMAL, 9991487f786SFrançois Tigeot dev_priv->kernel_context); 1000352ff8bdSFrançois Tigeot if (!client) { 1001352ff8bdSFrançois Tigeot DRM_ERROR("Failed to create execbuf guc_client\n"); 1002352ff8bdSFrançois Tigeot return -ENOMEM; 1003352ff8bdSFrançois Tigeot } 1004352ff8bdSFrançois Tigeot 1005352ff8bdSFrançois Tigeot guc->execbuf_client = client; 1006352ff8bdSFrançois Tigeot host2guc_sample_forcewake(guc, client); 10071487f786SFrançois Tigeot guc_init_doorbell_hw(guc); 1008352ff8bdSFrançois Tigeot 1009352ff8bdSFrançois Tigeot return 0; 1010352ff8bdSFrançois Tigeot } 1011352ff8bdSFrançois Tigeot 10121487f786SFrançois Tigeot void i915_guc_submission_disable(struct drm_i915_private *dev_priv) 1013352ff8bdSFrançois Tigeot { 1014352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 1015352ff8bdSFrançois Tigeot 10161487f786SFrançois Tigeot guc_client_free(dev_priv, guc->execbuf_client); 1017352ff8bdSFrançois Tigeot guc->execbuf_client = NULL; 1018352ff8bdSFrançois Tigeot } 1019352ff8bdSFrançois Tigeot 10201487f786SFrançois Tigeot void i915_guc_submission_fini(struct drm_i915_private *dev_priv) 1021352ff8bdSFrançois Tigeot { 1022352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 1023352ff8bdSFrançois Tigeot 1024c0e85e96SFrançois Tigeot gem_release_guc_obj(dev_priv->guc.ads_obj); 1025c0e85e96SFrançois Tigeot guc->ads_obj = NULL; 1026c0e85e96SFrançois Tigeot 1027352ff8bdSFrançois Tigeot gem_release_guc_obj(dev_priv->guc.log_obj); 1028352ff8bdSFrançois Tigeot guc->log_obj = NULL; 1029352ff8bdSFrançois Tigeot 1030352ff8bdSFrançois Tigeot if (guc->ctx_pool_obj) 1031352ff8bdSFrançois Tigeot ida_destroy(&guc->ctx_ids); 1032352ff8bdSFrançois Tigeot gem_release_guc_obj(guc->ctx_pool_obj); 1033352ff8bdSFrançois Tigeot guc->ctx_pool_obj = NULL; 1034352ff8bdSFrançois Tigeot } 1035352ff8bdSFrançois Tigeot 1036352ff8bdSFrançois Tigeot /** 1037352ff8bdSFrançois Tigeot * intel_guc_suspend() - notify GuC entering suspend state 1038352ff8bdSFrançois Tigeot * @dev: drm device 1039352ff8bdSFrançois Tigeot */ 1040352ff8bdSFrançois Tigeot int intel_guc_suspend(struct drm_device *dev) 1041352ff8bdSFrançois Tigeot { 1042*303bf270SFrançois Tigeot struct drm_i915_private *dev_priv = to_i915(dev); 1043352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 10441487f786SFrançois Tigeot struct i915_gem_context *ctx; 1045352ff8bdSFrançois Tigeot u32 data[3]; 1046352ff8bdSFrançois Tigeot 10471487f786SFrançois Tigeot if (guc->guc_fw.guc_fw_load_status != GUC_FIRMWARE_SUCCESS) 1048352ff8bdSFrançois Tigeot return 0; 1049352ff8bdSFrançois Tigeot 1050c0e85e96SFrançois Tigeot ctx = dev_priv->kernel_context; 1051352ff8bdSFrançois Tigeot 1052352ff8bdSFrançois Tigeot data[0] = HOST2GUC_ACTION_ENTER_S_STATE; 1053352ff8bdSFrançois Tigeot /* any value greater than GUC_POWER_D0 */ 1054352ff8bdSFrançois Tigeot data[1] = GUC_POWER_D1; 1055352ff8bdSFrançois Tigeot /* first page is shared data with GuC */ 1056352ff8bdSFrançois Tigeot data[2] = i915_gem_obj_ggtt_offset(ctx->engine[RCS].state); 1057352ff8bdSFrançois Tigeot 1058352ff8bdSFrançois Tigeot return host2guc_action(guc, data, ARRAY_SIZE(data)); 1059352ff8bdSFrançois Tigeot } 1060352ff8bdSFrançois Tigeot 1061352ff8bdSFrançois Tigeot 1062352ff8bdSFrançois Tigeot /** 1063352ff8bdSFrançois Tigeot * intel_guc_resume() - notify GuC resuming from suspend state 1064352ff8bdSFrançois Tigeot * @dev: drm device 1065352ff8bdSFrançois Tigeot */ 1066352ff8bdSFrançois Tigeot int intel_guc_resume(struct drm_device *dev) 1067352ff8bdSFrançois Tigeot { 1068*303bf270SFrançois Tigeot struct drm_i915_private *dev_priv = to_i915(dev); 1069352ff8bdSFrançois Tigeot struct intel_guc *guc = &dev_priv->guc; 10701487f786SFrançois Tigeot struct i915_gem_context *ctx; 1071352ff8bdSFrançois Tigeot u32 data[3]; 1072352ff8bdSFrançois Tigeot 10731487f786SFrançois Tigeot if (guc->guc_fw.guc_fw_load_status != GUC_FIRMWARE_SUCCESS) 1074352ff8bdSFrançois Tigeot return 0; 1075352ff8bdSFrançois Tigeot 1076c0e85e96SFrançois Tigeot ctx = dev_priv->kernel_context; 1077352ff8bdSFrançois Tigeot 1078352ff8bdSFrançois Tigeot data[0] = HOST2GUC_ACTION_EXIT_S_STATE; 1079352ff8bdSFrançois Tigeot data[1] = GUC_POWER_D0; 1080352ff8bdSFrançois Tigeot /* first page is shared data with GuC */ 1081352ff8bdSFrançois Tigeot data[2] = i915_gem_obj_ggtt_offset(ctx->engine[RCS].state); 1082352ff8bdSFrançois Tigeot 1083352ff8bdSFrançois Tigeot return host2guc_action(guc, data, ARRAY_SIZE(data)); 1084352ff8bdSFrançois Tigeot } 1085