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path: root/common/recipes-kernel/linux/files/0273-drm-amdgpu-add-proper-job-alloc-free-functions.patch
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From 6a50fb95f903bb73e062477399a1170de608c35c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Wed, 3 Feb 2016 13:44:52 +0100
Subject: [PATCH 0273/1110] drm/amdgpu: add proper job alloc/free functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

And use them in the CS instead of allocating IBs and jobs separately.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h       | 14 ++++---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c    | 63 +++++++++++--------------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c | 33 ++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h |  4 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c   |  6 +--
 drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c   |  2 +-
 6 files changed, 69 insertions(+), 53 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index e4f6069..1dbd2d7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -755,7 +755,9 @@ enum amdgpu_ring_type {
 };
 
 extern struct amd_sched_backend_ops amdgpu_sched_ops;
-
+int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
+                    struct amdgpu_job **job);
+void amdgpu_job_free(struct amdgpu_job *job);
 int amdgpu_sched_ib_submit_kernel_helper(struct amdgpu_device *adev,
 					 struct amdgpu_ring *ring,
 					 struct amdgpu_ib *ibs,
@@ -1181,9 +1183,9 @@ struct amdgpu_cs_parser {
 	/* chunks */
 	unsigned		nchunks;
 	struct amdgpu_cs_chunk	*chunks;
-        /* indirect buffers */
-	uint32_t		num_ibs;
-	struct amdgpu_ib	*ibs;
+
+       /* scheduler job object */
+        struct amdgpu_job       *job;
  
        /* buffer objects */
          struct ww_acquire_ctx           ticket;
@@ -1214,14 +1216,14 @@ struct amdgpu_job {
 static inline u32 amdgpu_get_ib_value(struct amdgpu_cs_parser *p,
 				      uint32_t ib_idx, int idx)
 {
-	return p->ibs[ib_idx].ptr[idx];
+        return p->job->ibs[ib_idx].ptr[idx];
 }
 
 static inline void amdgpu_set_ib_value(struct amdgpu_cs_parser *p,
 				       uint32_t ib_idx, int idx,
 				       uint32_t value)
 {
-	p->ibs[ib_idx].ptr[idx] = value;
+        p->job->ibs[ib_idx].ptr[idx] = value;
 }
 
 /*
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 58e115a..f1fd4ed 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -163,6 +163,7 @@ int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
 	uint64_t *chunk_array;
 	struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 	unsigned size;
+        unsigned size, num_ibs = 0;
 	int i;
 	int ret;
 
@@ -255,16 +256,9 @@ int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
 		}
 	}
 
-        if (p->num_ibs == 0) {
-                ret = -EINVAL;
+        ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job);
+        if (ret)
                 goto free_all_kdata;
-        }
-
-	p->ibs = kcalloc(p->num_ibs, sizeof(struct amdgpu_ib), GFP_KERNEL);
-	if (!p->ibs) {
-		ret = -ENOMEM;
-		goto free_all_kdata;
-	}
 
 	kfree(chunk_array);
 	return 0;
@@ -460,7 +454,7 @@ static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
 
 	list_for_each_entry(e, &p->validated, tv.head) {
 		struct reservation_object *resv = e->robj->tbo.resv;
-		r = amdgpu_sync_resv(p->adev, &p->ibs[0].sync, resv, p->filp);
+                r = amdgpu_sync_resv(p->adev, &p->job->ibs[0].sync, resv, p->filp);
 
 		if (r)
 			return r;
@@ -520,10 +514,8 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bo
 	for (i = 0; i < parser->nchunks; i++)
 		drm_free_large(parser->chunks[i].kdata);
 	kfree(parser->chunks);
-	if (parser->ibs)
-		for (i = 0; i < parser->num_ibs; i++)
-			amdgpu_ib_free(parser->adev, &parser->ibs[i]);
-	kfree(parser->ibs);
+        if (parser->job)
+                amdgpu_job_free(parser->job);
 	amdgpu_bo_unref(&parser->uf.bo);
 	amdgpu_bo_unref(&parser->uf_entry.robj);
 }
@@ -540,7 +532,7 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p,
 	if (r)
 		return r;
 
-	r = amdgpu_sync_fence(adev, &p->ibs[0].sync, vm->page_directory_fence);
+        r = amdgpu_sync_fence(adev, &p->job->ibs[0].sync, vm->page_directory_fence);
 	if (r)
 		return r;
 
@@ -566,14 +558,14 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p,
 				return r;
 
 			f = bo_va->last_pt_update;
-			r = amdgpu_sync_fence(adev, &p->ibs[0].sync, f);
+                        r = amdgpu_sync_fence(adev, &p->job->ibs[0].sync, f);
 			if (r)
 				return r;
 		}
 
 	}
 
-	r = amdgpu_vm_clear_invalids(adev, vm, &p->ibs[0].sync);
+        r = amdgpu_vm_clear_invalids(adev, vm, &p->job->ibs[0].sync);
 
 	if (amdgpu_vm_debug && p->bo_list) {
 		/* Invalidate all BOs to test for userspace bugs */
@@ -599,8 +591,8 @@ static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
 	int i, r;
 
 	/* Only for UVD/VCE VM emulation */
-	for (i = 0; i < parser->num_ibs; i++) {
-		ring = parser->ibs[i].ring;
+        for (i = 0; i < parser->job->num_ibs; i++) {
+                ring = parser->job->ibs[i].ring;
 		if (ring->funcs->parse_cs) {
 			r = amdgpu_ring_parse_cs(ring, parser, i);
 			if (r)
@@ -633,14 +625,14 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
 	int i, j;
 	int r;
 
-	for (i = 0, j = 0; i < parser->nchunks && j < parser->num_ibs; i++) {
+        for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) {
 		struct amdgpu_cs_chunk *chunk;
 		struct amdgpu_ib *ib;
 		struct drm_amdgpu_cs_chunk_ib *chunk_ib;
 		struct amdgpu_ring *ring;
 
 		chunk = &parser->chunks[i];
-		ib = &parser->ibs[j];
+                ib = &parser->job->ibs[j];
 		chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
 
 		if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
@@ -709,7 +701,7 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
 		struct amdgpu_bo *gds = parser->bo_list->gds_obj;
 		struct amdgpu_bo *gws = parser->bo_list->gws_obj;
 		struct amdgpu_bo *oa = parser->bo_list->oa_obj;
-		struct amdgpu_ib *ib = &parser->ibs[0];
+                struct amdgpu_ib *ib = &parser->job->ibs[0];
 
 		if (gds) {
 			ib->gds_base = amdgpu_bo_gpu_offset(gds);
@@ -726,7 +718,7 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
 	}
 	/* wrap the last IB with user fence */
 	if (parser->uf.bo) {
-		struct amdgpu_ib *ib = &parser->ibs[parser->num_ibs - 1];
+                struct amdgpu_ib *ib = &parser->job->ibs[parser->job->num_ibs - 1];
 
 		/* UVD & VCE fw doesn't support user fences */
 		if (ib->ring->type == AMDGPU_RING_TYPE_UVD ||
@@ -747,7 +739,7 @@ static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
 	int i, j, r;
 
 	/* Add dependencies to first IB */
-	ib = &p->ibs[0];
+        ib = &p->job->ibs[0];
 	for (i = 0; i < p->nchunks; ++i) {
 		struct drm_amdgpu_cs_chunk_dep *deps;
 		struct amdgpu_cs_chunk *chunk;
@@ -799,26 +791,20 @@ static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
 
 static int amdgpu_cs_free_job(struct amdgpu_job *job)
 {
-	int i;
-	if (job->ibs)
-		for (i = 0; i < job->num_ibs; i++)
-			amdgpu_ib_free(job->adev, &job->ibs[i]);
-	kfree(job->ibs);
-	if (job->uf.bo)
-		amdgpu_bo_unref(&job->uf.bo);
+        amdgpu_job_free(job);
 	return 0;
 }
 
 static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 			    union drm_amdgpu_cs *cs)
 {
-	struct amdgpu_ring * ring = p->ibs->ring;
+        struct amdgpu_ring * ring = p->job->ibs->ring;
 	struct amd_sched_fence *fence;
 	struct amdgpu_job *job;
 
-	job = kzalloc(sizeof(struct amdgpu_job), GFP_KERNEL);
-	if (!job)
-		return -ENOMEM;
+        job = p->job;
+        p->job = NULL;
+
 
 	job->base.sched = &ring->sched;
 	job->base.s_entity = &p->ctx->rings[ring->idx].entity;
@@ -826,11 +812,6 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 	job->owner = p->filp;
 	job->free_job = amdgpu_cs_free_job;
 
-	job->ibs = p->ibs;
-	job->num_ibs = p->num_ibs;
-	p->ibs = NULL;
-	p->num_ibs = 0;
-
 	if (job->ibs[job->num_ibs - 1].user) {
 		job->uf = p->uf;
 		job->ibs[job->num_ibs - 1].user = &job->uf;
@@ -897,7 +878,7 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	if (r)
 		goto out;
 
-	for (i = 0; i < parser.num_ibs; i++)
+        for (i = 0; i < parser.job->num_ibs; i++)
 		trace_amdgpu_cs(&parser, i);
 
 	r = amdgpu_cs_ib_vm_chunk(adev, &parser);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
index 76a1f82..91b4862 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
@@ -28,6 +28,39 @@
 #include "amdgpu.h"
 #include "amdgpu_trace.h"
 
+int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
+                     struct amdgpu_job **job)
+{
+       size_t size = sizeof(struct amdgpu_job);
+ 
+        if (num_ibs == 0)
+                return -EINVAL;
+ 
+        size += sizeof(struct amdgpu_ib) * num_ibs;
+ 
+        *job = kzalloc(size, GFP_KERNEL);
+        if (!*job)
+                return -ENOMEM;
+ 
+        (*job)->adev = adev;
+        (*job)->ibs = (void *)&(*job)[1];
+        (*job)->num_ibs = num_ibs;
+        (*job)->free_job = NULL;
+ 
+        return 0;
+}
+
+void amdgpu_job_free(struct amdgpu_job *job)
+{
+        unsigned i;
+ 
+        for (i = 0; i < job->num_ibs; ++i)
+                amdgpu_ib_free(job->adev, &job->ibs[i]);
+ 
+        amdgpu_bo_unref(&job->uf.bo);
+       /* TODO: Free the job structure here as well */
+}
+
 static struct fence *amdgpu_sched_dependency(struct amd_sched_job *sched_job)
 {
 	struct amdgpu_job *job = to_amdgpu_job(sched_job);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
index e7d2676..9c15284 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
@@ -39,9 +39,9 @@ TRACE_EVENT(amdgpu_cs,
 	    TP_fast_assign(
 			   __entry->bo_list = p->bo_list;
 			   __entry->ring = p->ibs[i].ring->idx;
-			   __entry->dw = p->ibs[i].length_dw;
+                           __entry->dw = p->job->ibs[i].length_dw;
 			   __entry->fences = amdgpu_fence_count_emitted(
-				p->ibs[i].ring);
+                                p->job->ibs[i].ring);
 			   ),
 	    TP_printk("bo_list=%p, ring=%u, dw=%u, fences=%u",
 		      __entry->bo_list, __entry->ring, __entry->dw,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index 2a20b66..520ad02 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -707,7 +707,7 @@ static int amdgpu_uvd_cs_pass2(struct amdgpu_uvd_cs_ctx *ctx)
 static int amdgpu_uvd_cs_reg(struct amdgpu_uvd_cs_ctx *ctx,
 			     int (*cb)(struct amdgpu_uvd_cs_ctx *ctx))
 {
-	struct amdgpu_ib *ib = &ctx->parser->ibs[ctx->ib_idx];
+        struct amdgpu_ib *ib = &ctx->parser->job->ibs[ctx->ib_idx];
 	int i, r;
 
 	ctx->idx++;
@@ -753,7 +753,7 @@ static int amdgpu_uvd_cs_reg(struct amdgpu_uvd_cs_ctx *ctx,
 static int amdgpu_uvd_cs_packets(struct amdgpu_uvd_cs_ctx *ctx,
 				 int (*cb)(struct amdgpu_uvd_cs_ctx *ctx))
 {
-	struct amdgpu_ib *ib = &ctx->parser->ibs[ctx->ib_idx];
+        struct amdgpu_ib *ib = &ctx->parser->job->ibs[ctx->ib_idx];
 	int r;
 
 	for (ctx->idx = 0 ; ctx->idx < ib->length_dw; ) {
@@ -795,7 +795,7 @@ int amdgpu_uvd_ring_parse_cs(struct amdgpu_cs_parser *parser, uint32_t ib_idx)
 		[0x00000003]	=	2048,
 		[0x00000004]	=	0xFFFFFFFF,
 	};
-	struct amdgpu_ib *ib = &parser->ibs[ib_idx];
+        struct amdgpu_ib *ib = &parser->job->ibs[ib_idx];
 	int r;
 
 	if (ib->length_dw % 16) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
index d80e12c..420b610 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -604,7 +604,7 @@ static int amdgpu_vce_validate_handle(struct amdgpu_cs_parser *p,
  */
 int amdgpu_vce_ring_parse_cs(struct amdgpu_cs_parser *p, uint32_t ib_idx)
 {
-	struct amdgpu_ib *ib = &p->ibs[ib_idx];
+        struct amdgpu_ib *ib = &p->job->ibs[ib_idx];
 	unsigned fb_idx = 0, bs_idx = 0;
 	int session_idx = -1;
 	bool destroyed = false;
-- 
2.7.4