Implement the functions to allow PXP to send a GPU command, in order to terminate the hardware session, so hardware can recycle this session slot for the next usage.
Signed-off-by: Huang, Sean Z <[email protected]> --- drivers/gpu/drm/i915/pxp/intel_pxp_sm.c | 150 ++++++++++++++++++++++++ 1 file changed, 150 insertions(+) diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c index 056f65fbaf4e..c88243e02a3c 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c @@ -3,13 +3,163 @@ * Copyright(c) 2020, Intel Corporation. All rights reserved. */ +#include "gt/intel_gpu_commands.h" +#include "gt/intel_gt.h" #include "gt/intel_context.h" +#include "gt/intel_gt_buffer_pool.h" #include "gt/intel_engine_pm.h" #include "intel_pxp.h" #include "intel_pxp_sm.h" #include "intel_pxp_context.h" +static struct i915_vma *pxp_get_batch(struct drm_i915_private *i915, + struct intel_context *ce, + struct intel_gt_buffer_pool_node *pool, + u32 *cmd_buf, int cmd_size_in_dw) +{ + struct i915_vma *batch = ERR_PTR(-EINVAL); + u32 *cmd; + + if (!ce || !ce->engine || !cmd_buf) + return ERR_PTR(-EINVAL); + + if (cmd_size_in_dw * 4 > PAGE_SIZE) { + drm_err(&i915->drm, "Failed to %s, invalid cmd_size_id_dw=[%d]\n", + __func__, cmd_size_in_dw); + return ERR_PTR(-EINVAL); + } + + cmd = i915_gem_object_pin_map(pool->obj, I915_MAP_FORCE_WC); + if (IS_ERR(cmd)) { + drm_err(&i915->drm, "Failed to i915_gem_object_pin_map()\n"); + return ERR_PTR(-EINVAL); + } + + memcpy(cmd, cmd_buf, cmd_size_in_dw * 4); + + if (drm_debug_enabled(DRM_UT_DRIVER)) { + print_hex_dump(KERN_DEBUG, "cmd binaries:", + DUMP_PREFIX_OFFSET, 4, 4, cmd, cmd_size_in_dw * 4, true); + } + + i915_gem_object_unpin_map(pool->obj); + + batch = i915_vma_instance(pool->obj, ce->vm, NULL); + if (IS_ERR(batch)) { + drm_err(&i915->drm, "Failed to i915_vma_instance()\n"); + return batch; + } + + return batch; +} + +static int pxp_submit_cmd(struct drm_i915_private *i915, u32 *cmd, int cmd_size_in_dw) +{ + int err = -EINVAL; + struct i915_vma *batch; + struct i915_request *rq; + struct intel_context *ce = NULL; + bool is_engine_pm_get = false; + bool is_batch_vma_pin = false; + bool is_skip_req_on_err = false; + bool is_engine_get_pool = false; + struct intel_gt_buffer_pool_node *pool = NULL; + struct intel_gt *gt = NULL; + + if (!i915 || !HAS_ENGINE(&i915->gt, VCS0) || + !i915->gt.engine[VCS0]->kernel_context) { + err = -EINVAL; + goto end; + } + + if (!cmd || (cmd_size_in_dw * 4) > PAGE_SIZE) { + drm_err(&i915->drm, "Failed to %s bad params\n", __func__); + return -EINVAL; + } + + gt = &i915->gt; + ce = i915->gt.engine[VCS0]->kernel_context; + + intel_engine_pm_get(ce->engine); + is_engine_pm_get = true; + + pool = intel_gt_get_buffer_pool(gt, PAGE_SIZE); + if (IS_ERR(pool)) { + drm_err(&i915->drm, "Failed to intel_engine_get_pool()\n"); + goto end; + } + is_engine_get_pool = true; + + batch = pxp_get_batch(i915, ce, pool, cmd, cmd_size_in_dw); + if (IS_ERR(batch)) { + drm_err(&i915->drm, "Failed to pxp_get_batch()\n"); + goto end; + } + + err = i915_vma_pin(batch, 0, 0, PIN_USER); + if (err) { + drm_err(&i915->drm, "Failed to i915_vma_pin()\n"); + goto end; + } + is_batch_vma_pin = true; + + rq = intel_context_create_request(ce); + if (IS_ERR(rq)) { + drm_err(&i915->drm, "Failed to intel_context_create_request()\n"); + goto end; + } + is_skip_req_on_err = true; + + err = intel_gt_buffer_pool_mark_active(pool, rq); + if (err) { + drm_err(&i915->drm, "Failed to intel_engine_pool_mark_active()\n"); + goto end; + } + + i915_vma_lock(batch); + err = i915_request_await_object(rq, batch->obj, false); + if (!err) + err = i915_vma_move_to_active(batch, rq, 0); + i915_vma_unlock(batch); + if (err) { + drm_err(&i915->drm, "Failed to i915_request_await_object()\n"); + goto end; + } + + if (ce->engine->emit_init_breadcrumb) { + err = ce->engine->emit_init_breadcrumb(rq); + if (err) { + drm_err(&i915->drm, "Failed to emit_init_breadcrumb()\n"); + goto end; + } + } + + err = ce->engine->emit_bb_start(rq, batch->node.start, + batch->node.size, 0); + if (err) { + drm_err(&i915->drm, "Failed to emit_bb_start()\n"); + goto end; + } + + i915_request_add(rq); + +end: + if (unlikely(err) && is_skip_req_on_err) + i915_request_set_error_once(rq, err); + + if (is_batch_vma_pin) + i915_vma_unpin(batch); + + if (is_engine_get_pool) + intel_gt_buffer_pool_put(pool); + + if (is_engine_pm_get) + intel_engine_pm_put(ce->engine); + + return err; +} + static int pxp_sm_reg_read(struct drm_i915_private *i915, u32 offset, u32 *regval) { intel_wakeref_t wakeref; -- 2.17.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
