diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/cmd_parser.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/cmd_parser.c | 142 |
1 files changed, 139 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index 3fea967ee817..2e6d46246f76 100644 --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c @@ -38,11 +38,17 @@ #include "i915_drv.h" #include "gt/intel_gpu_commands.h" +#include "gt/intel_lrc.h" #include "gt/intel_ring.h" +#include "gt/intel_gt_requests.h" #include "gvt.h" #include "i915_pvinfo.h" #include "trace.h" +#include "gem/i915_gem_context.h" +#include "gem/i915_gem_pm.h" +#include "gt/intel_context.h" + #define INVALID_OP (~0U) #define OP_LEN_MI 9 @@ -455,6 +461,7 @@ enum { RING_BUFFER_INSTRUCTION, BATCH_BUFFER_INSTRUCTION, BATCH_BUFFER_2ND_LEVEL, + RING_BUFFER_CTX, }; enum { @@ -496,6 +503,7 @@ struct parser_exec_state { */ int saved_buf_addr_type; bool is_ctx_wa; + bool is_init_ctx; const struct cmd_info *info; @@ -709,6 +717,11 @@ static inline u32 cmd_val(struct parser_exec_state *s, int index) return *cmd_ptr(s, index); } +static inline bool is_init_ctx(struct parser_exec_state *s) +{ + return (s->buf_type == RING_BUFFER_CTX && s->is_init_ctx); +} + static void parser_exec_state_dump(struct parser_exec_state *s) { int cnt = 0; @@ -722,7 +735,8 @@ static void parser_exec_state_dump(struct parser_exec_state *s) gvt_dbg_cmd(" %s %s ip_gma(%08lx) ", s->buf_type == RING_BUFFER_INSTRUCTION ? - "RING_BUFFER" : "BATCH_BUFFER", + "RING_BUFFER" : ((s->buf_type == RING_BUFFER_CTX) ? + "CTX_BUFFER" : "BATCH_BUFFER"), s->buf_addr_type == GTT_BUFFER ? "GTT" : "PPGTT", s->ip_gma); @@ -757,7 +771,8 @@ static inline void update_ip_va(struct parser_exec_state *s) if (WARN_ON(s->ring_head == s->ring_tail)) return; - if (s->buf_type == RING_BUFFER_INSTRUCTION) { + if (s->buf_type == RING_BUFFER_INSTRUCTION || + s->buf_type == RING_BUFFER_CTX) { unsigned long ring_top = s->ring_start + s->ring_size; if (s->ring_head > s->ring_tail) { @@ -937,6 +952,11 @@ static int cmd_reg_handler(struct parser_exec_state *s, return -EFAULT; } + if (is_init_ctx(s)) { + intel_gvt_mmio_set_cmd_accessible(gvt, offset); + return 0; + } + if (!intel_gvt_mmio_is_cmd_accessible(gvt, offset)) { gvt_vgpu_err("%s access to non-render register (%x)\n", cmd, offset); @@ -1216,6 +1236,8 @@ static int cmd_handler_mi_batch_buffer_end(struct parser_exec_state *s) s->buf_type = BATCH_BUFFER_INSTRUCTION; ret = ip_gma_set(s, s->ret_ip_gma_bb); s->buf_addr_type = s->saved_buf_addr_type; + } else if (s->buf_type == RING_BUFFER_CTX) { + ret = ip_gma_set(s, s->ring_tail); } else { s->buf_type = RING_BUFFER_INSTRUCTION; s->buf_addr_type = GTT_BUFFER; @@ -2764,7 +2786,8 @@ static int command_scan(struct parser_exec_state *s, gma_bottom = rb_start + rb_len; while (s->ip_gma != gma_tail) { - if (s->buf_type == RING_BUFFER_INSTRUCTION) { + if (s->buf_type == RING_BUFFER_INSTRUCTION || + s->buf_type == RING_BUFFER_CTX) { if (!(s->ip_gma >= rb_start) || !(s->ip_gma < gma_bottom)) { gvt_vgpu_err("ip_gma %lx out of ring scope." @@ -3057,6 +3080,119 @@ int intel_gvt_scan_and_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx) return 0; } +/* generate dummy contexts by sending empty requests to HW, and let + * the HW to fill Engine Contexts. This dummy contexts are used for + * initialization purpose (update reg whitelist), so referred to as + * init context here + */ +void intel_gvt_update_reg_whitelist(struct intel_vgpu *vgpu) +{ + struct intel_gvt *gvt = vgpu->gvt; + struct drm_i915_private *dev_priv = gvt->gt->i915; + struct intel_engine_cs *engine; + enum intel_engine_id id; + const unsigned long start = LRC_STATE_PN * PAGE_SIZE; + struct i915_request *rq; + struct intel_vgpu_submission *s = &vgpu->submission; + struct i915_request *requests[I915_NUM_ENGINES] = {}; + bool is_ctx_pinned[I915_NUM_ENGINES] = {}; + int ret; + + if (gvt->is_reg_whitelist_updated) + return; + + for_each_engine(engine, &dev_priv->gt, id) { + ret = intel_context_pin(s->shadow[id]); + if (ret) { + gvt_vgpu_err("fail to pin shadow ctx\n"); + goto out; + } + is_ctx_pinned[id] = true; + + rq = i915_request_create(s->shadow[id]); + if (IS_ERR(rq)) { + gvt_vgpu_err("fail to alloc default request\n"); + ret = -EIO; + goto out; + } + requests[id] = i915_request_get(rq); + i915_request_add(rq); + } + + if (intel_gt_wait_for_idle(&dev_priv->gt, + I915_GEM_IDLE_TIMEOUT) == -ETIME) { + ret = -EIO; + goto out; + } + + /* scan init ctx to update cmd accessible list */ + for_each_engine(engine, &dev_priv->gt, id) { + int size = engine->context_size - PAGE_SIZE; + void *vaddr; + struct parser_exec_state s; + struct drm_i915_gem_object *obj; + struct i915_request *rq; + + rq = requests[id]; + GEM_BUG_ON(!i915_request_completed(rq)); + GEM_BUG_ON(!intel_context_is_pinned(rq->context)); + obj = rq->context->state->obj; + + if (!obj) { + ret = -EIO; + goto out; + } + + i915_gem_object_set_cache_coherency(obj, + I915_CACHE_LLC); + + vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB); + if (IS_ERR(vaddr)) { + gvt_err("failed to pin init ctx obj, ring=%d, err=%lx\n", + id, PTR_ERR(vaddr)); + goto out; + } + + s.buf_type = RING_BUFFER_CTX; + s.buf_addr_type = GTT_BUFFER; + s.vgpu = vgpu; + s.engine = engine; + s.ring_start = 0; + s.ring_size = size; + s.ring_head = 0; + s.ring_tail = size; + s.rb_va = vaddr + start; + s.workload = NULL; + s.is_ctx_wa = false; + s.is_init_ctx = true; + + /* skipping the first RING_CTX_SIZE(0x50) dwords */ + ret = ip_gma_set(&s, RING_CTX_SIZE); + if (ret) { + i915_gem_object_unpin_map(obj); + goto out; + } + + ret = command_scan(&s, 0, size, 0, size); + if (ret) + gvt_err("Scan init ctx error\n"); + + i915_gem_object_unpin_map(obj); + } + +out: + if (!ret) + gvt->is_reg_whitelist_updated = true; + + for (id = 0; id < I915_NUM_ENGINES ; id++) { + if (requests[id]) + i915_request_put(requests[id]); + + if (is_ctx_pinned[id]) + intel_context_unpin(s->shadow[id]); + } +} + static int init_cmd_table(struct intel_gvt *gvt) { unsigned int gen_type = intel_gvt_get_device_type(gvt); |