[PATCH] drm/i915/guc: Use iosys_map interface to update lrc_desc
Balasubramani Vivekanandan
balasubramani.vivekanandan at intel.com
Tue Mar 8 16:47:42 UTC 2022
This patch is continuation of the effort to move all pointers in i915,
which at any point may be pointing to device memory or system memory, to
iosys_map interface.
More details about the need of this change is explained in the patch
series which initiated this task
https://patchwork.freedesktop.org/series/99711/
This patch converts all access to the lrc_desc through iosys_map
interfaces.
Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Cc: John Harrison <John.C.Harrison at Intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan at intel.com>
---
drivers/gpu/drm/i915/gt/uc/intel_guc.h | 2 +-
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 68 ++++++++++++-------
2 files changed, 43 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
index e439e6c1ac8b..cbbc24dbaf0f 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
@@ -168,7 +168,7 @@ struct intel_guc {
/** @lrc_desc_pool: object allocated to hold the GuC LRC descriptor pool */
struct i915_vma *lrc_desc_pool;
/** @lrc_desc_pool_vaddr: contents of the GuC LRC descriptor pool */
- void *lrc_desc_pool_vaddr;
+ struct iosys_map lrc_desc_pool_vaddr;
/**
* @context_lookup: used to resolve intel_context from guc_id, if a
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 9ec03234d2c2..84b17ded886a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -467,13 +467,14 @@ static u32 *get_wq_pointer(struct guc_process_desc *desc,
return &__get_parent_scratch(ce)->wq[ce->parallel.guc.wqi_tail / sizeof(u32)];
}
-static struct guc_lrc_desc *__get_lrc_desc(struct intel_guc *guc, u32 index)
+static void __write_lrc_desc(struct intel_guc *guc, u32 index,
+ struct guc_lrc_desc *desc)
{
- struct guc_lrc_desc *base = guc->lrc_desc_pool_vaddr;
+ unsigned int size = sizeof(struct guc_lrc_desc);
GEM_BUG_ON(index >= GUC_MAX_CONTEXT_ID);
- return &base[index];
+ iosys_map_memcpy_to(&guc->lrc_desc_pool_vaddr, index * size, desc, size);
}
static inline struct intel_context *__get_context(struct intel_guc *guc, u32 id)
@@ -489,20 +490,28 @@ static int guc_lrc_desc_pool_create(struct intel_guc *guc)
{
u32 size;
int ret;
+ void *addr;
size = PAGE_ALIGN(sizeof(struct guc_lrc_desc) *
GUC_MAX_CONTEXT_ID);
ret = intel_guc_allocate_and_map_vma(guc, size, &guc->lrc_desc_pool,
- (void **)&guc->lrc_desc_pool_vaddr);
+ &addr);
+
if (ret)
return ret;
+ if (i915_gem_object_is_lmem(guc->lrc_desc_pool->obj))
+ iosys_map_set_vaddr_iomem(&guc->lrc_desc_pool_vaddr,
+ (void __iomem *)addr);
+ else
+ iosys_map_set_vaddr(&guc->lrc_desc_pool_vaddr, addr);
+
return 0;
}
static void guc_lrc_desc_pool_destroy(struct intel_guc *guc)
{
- guc->lrc_desc_pool_vaddr = NULL;
+ iosys_map_clear(&guc->lrc_desc_pool_vaddr);
i915_vma_unpin_and_release(&guc->lrc_desc_pool, I915_VMA_RELEASE_MAP);
}
@@ -513,9 +522,11 @@ static inline bool guc_submission_initialized(struct intel_guc *guc)
static inline void _reset_lrc_desc(struct intel_guc *guc, u32 id)
{
- struct guc_lrc_desc *desc = __get_lrc_desc(guc, id);
+ unsigned int size = sizeof(struct guc_lrc_desc);
- memset(desc, 0, sizeof(*desc));
+ GEM_BUG_ON(id >= GUC_MAX_CONTEXT_ID);
+
+ iosys_map_memset(&guc->lrc_desc_pool_vaddr, id * size, 0, size);
}
static inline bool ctx_id_mapped(struct intel_guc *guc, u32 id)
@@ -2233,7 +2244,7 @@ static void prepare_context_registration_info(struct intel_context *ce)
struct intel_engine_cs *engine = ce->engine;
struct intel_guc *guc = &engine->gt->uc.guc;
u32 ctx_id = ce->guc_id.id;
- struct guc_lrc_desc *desc;
+ struct guc_lrc_desc desc;
struct intel_context *child;
GEM_BUG_ON(!engine->mask);
@@ -2245,13 +2256,13 @@ static void prepare_context_registration_info(struct intel_context *ce)
GEM_BUG_ON(i915_gem_object_is_lmem(guc->ct.vma->obj) !=
i915_gem_object_is_lmem(ce->ring->vma->obj));
- desc = __get_lrc_desc(guc, ctx_id);
- desc->engine_class = engine_class_to_guc_class(engine->class);
- desc->engine_submit_mask = engine->logical_mask;
- desc->hw_context_desc = ce->lrc.lrca;
- desc->priority = ce->guc_state.prio;
- desc->context_flags = CONTEXT_REGISTRATION_FLAG_KMD;
- guc_context_policy_init(engine, desc);
+ memset(&desc, 0, sizeof(desc));
+ desc.engine_class = engine_class_to_guc_class(engine->class);
+ desc.engine_submit_mask = engine->logical_mask;
+ desc.hw_context_desc = ce->lrc.lrca;
+ desc.priority = ce->guc_state.prio;
+ desc.context_flags = CONTEXT_REGISTRATION_FLAG_KMD;
+ guc_context_policy_init(engine, &desc);
/*
* If context is a parent, we need to register a process descriptor
@@ -2259,36 +2270,41 @@ static void prepare_context_registration_info(struct intel_context *ce)
*/
if (intel_context_is_parent(ce)) {
struct guc_process_desc *pdesc;
+ struct guc_lrc_desc child_desc;
ce->parallel.guc.wqi_tail = 0;
ce->parallel.guc.wqi_head = 0;
- desc->process_desc = i915_ggtt_offset(ce->state) +
+ desc.process_desc = i915_ggtt_offset(ce->state) +
__get_parent_scratch_offset(ce);
- desc->wq_addr = i915_ggtt_offset(ce->state) +
+ desc.wq_addr = i915_ggtt_offset(ce->state) +
__get_wq_offset(ce);
- desc->wq_size = WQ_SIZE;
+ desc.wq_size = WQ_SIZE;
pdesc = __get_process_desc(ce);
memset(pdesc, 0, sizeof(*(pdesc)));
pdesc->stage_id = ce->guc_id.id;
- pdesc->wq_base_addr = desc->wq_addr;
- pdesc->wq_size_bytes = desc->wq_size;
+ pdesc->wq_base_addr = desc.wq_addr;
+ pdesc->wq_size_bytes = desc.wq_size;
pdesc->wq_status = WQ_STATUS_ACTIVE;
for_each_child(ce, child) {
- desc = __get_lrc_desc(guc, child->guc_id.id);
+ memset(&child_desc, 0, sizeof(child_desc));
- desc->engine_class =
+ child_desc.engine_class =
engine_class_to_guc_class(engine->class);
- desc->hw_context_desc = child->lrc.lrca;
- desc->priority = ce->guc_state.prio;
- desc->context_flags = CONTEXT_REGISTRATION_FLAG_KMD;
- guc_context_policy_init(engine, desc);
+ child_desc.hw_context_desc = child->lrc.lrca;
+ child_desc.priority = ce->guc_state.prio;
+ child_desc.context_flags = CONTEXT_REGISTRATION_FLAG_KMD;
+ guc_context_policy_init(engine, &child_desc);
+
+ __write_lrc_desc(guc, child->guc_id.id, &child_desc);
}
clear_children_join_go_memory(ce);
}
+
+ __write_lrc_desc(guc, ctx_id, &desc);
}
static int try_context_registration(struct intel_context *ce, bool loop)
--
2.25.1
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