Now that intel_context->pin_mutex is gone, the reason for splitting
pre_pin/post_unpin ops is also gone. Remove those ops, and handle
this detail inside guc/execlists submission only.

Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_context.c       | 19 ++-----
 drivers/gpu/drm/i915/gt/intel_context_types.h |  4 +-
 .../drm/i915/gt/intel_execlists_submission.c  | 50 ++++++++-----------
 .../gpu/drm/i915/gt/intel_ring_submission.c   | 16 +-----
 drivers/gpu/drm/i915/gt/mock_engine.c         | 14 +-----
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 25 ++++++----
 6 files changed, 44 insertions(+), 84 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_context.c 
b/drivers/gpu/drm/i915/gt/intel_context.c
index e6dab37c4266..b630c1968794 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.c
+++ b/drivers/gpu/drm/i915/gt/intel_context.c
@@ -207,8 +207,6 @@ static void intel_context_post_unpin(struct intel_context 
*ce)
 int __intel_context_do_pin_ww(struct intel_context *ce,
                              struct i915_gem_ww_ctx *ww)
 {
-       bool handoff = false;
-       void *vaddr;
        int err;
 
        err = intel_context_alloc_state(ce);
@@ -229,40 +227,32 @@ int __intel_context_do_pin_ww(struct intel_context *ce,
        if (err)
                goto err_ctx_unpin;
 
-       err = ce->ops->pre_pin(ce, ww, &vaddr);
-       if (err)
-               goto err_release;
-
        if (unlikely(intel_context_is_closed(ce))) {
                err = -ENOENT;
-               goto err_post_unpin;
+               goto err_release;
        }
 
        if (likely(!atomic_add_unless(&ce->pin_count, 1, 0))) {
                err = intel_context_active_acquire(ce);
                if (unlikely(err))
-                       goto err_post_unpin;
+                       goto err_release;
 
-               err = ce->ops->pin(ce, vaddr);
+               err = ce->ops->pin(ce, ww);
                if (err) {
                        intel_context_active_release(ce);
-                       goto err_post_unpin;
+                       goto err_release;
                }
 
                CE_TRACE(ce, "pin ring:{start:%08x, head:%04x, tail:%04x}\n",
                         i915_ggtt_offset(ce->ring->vma),
                         ce->ring->head, ce->ring->tail);
 
-               handoff = true;
                smp_mb__before_atomic(); /* flush pin before it is visible */
                atomic_inc(&ce->pin_count);
        }
 
        GEM_BUG_ON(!intel_context_is_pinned(ce)); /* no overflow! */
 
-err_post_unpin:
-       if (!handoff)
-               ce->ops->post_unpin(ce);
 err_release:
        i915_active_release(&ce->active);
 err_ctx_unpin:
@@ -303,7 +293,6 @@ void intel_context_unpin(struct intel_context *ce)
 
        CE_TRACE(ce, "unpin\n");
        ce->ops->unpin(ce);
-       ce->ops->post_unpin(ce);
 
        /*
         * Once released, we may asynchronously drop the active reference.
diff --git a/drivers/gpu/drm/i915/gt/intel_context_types.h 
b/drivers/gpu/drm/i915/gt/intel_context_types.h
index b104d5e9d3b6..e10057901c6c 100644
--- a/drivers/gpu/drm/i915/gt/intel_context_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_context_types.h
@@ -35,10 +35,8 @@ struct intel_context_ops {
 
        int (*alloc)(struct intel_context *ce);
 
-       int (*pre_pin)(struct intel_context *ce, struct i915_gem_ww_ctx *ww, 
void **vaddr);
-       int (*pin)(struct intel_context *ce, void *vaddr);
+       int (*pin)(struct intel_context *ce, struct i915_gem_ww_ctx *ww);
        void (*unpin)(struct intel_context *ce);
-       void (*post_unpin)(struct intel_context *ce);
 
        void (*enter)(struct intel_context *ce);
        void (*exit)(struct intel_context *ce);
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c 
b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index cdb2126a159a..6a1a45ffe816 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -2509,35 +2509,38 @@ static void execlists_submit_request(struct 
i915_request *request)
 }
 
 static int
-__execlists_context_pre_pin(struct intel_context *ce,
-                           struct intel_engine_cs *engine,
-                           struct i915_gem_ww_ctx *ww, void **vaddr)
+__execlists_context_pin(struct intel_context *ce,
+                       struct intel_engine_cs *engine,
+                       struct i915_gem_ww_ctx *ww)
 {
        int err;
+       void *vaddr;
 
-       err = lrc_pre_pin(ce, engine, ww, vaddr);
+       err = lrc_pre_pin(ce, engine, ww, &vaddr);
        if (err)
                return err;
 
        if (!__test_and_set_bit(CONTEXT_INIT_BIT, &ce->flags)) {
-               lrc_init_state(ce, engine, *vaddr);
+               lrc_init_state(ce, engine, vaddr);
 
                 __i915_gem_object_flush_map(ce->state->obj, 0, 
engine->context_size);
        }
 
-       return 0;
+       err = lrc_pin(ce, ce->engine, vaddr);
+       if (err)
+               lrc_post_unpin(ce);
+       return err;
 }
 
-static int execlists_context_pre_pin(struct intel_context *ce,
-                                    struct i915_gem_ww_ctx *ww,
-                                    void **vaddr)
+static int execlists_context_pin(struct intel_context *ce, struct 
i915_gem_ww_ctx *ww)
 {
-       return __execlists_context_pre_pin(ce, ce->engine, ww, vaddr);
+       return __execlists_context_pin(ce, ce->engine, ww);
 }
 
-static int execlists_context_pin(struct intel_context *ce, void *vaddr)
+static void execlists_context_unpin(struct intel_context *ce)
 {
-       return lrc_pin(ce, ce->engine, vaddr);
+       lrc_unpin(ce);
+       lrc_post_unpin(ce);
 }
 
 static int execlists_context_alloc(struct intel_context *ce)
@@ -2545,15 +2548,14 @@ static int execlists_context_alloc(struct intel_context 
*ce)
        return lrc_alloc(ce, ce->engine);
 }
 
+
 static const struct intel_context_ops execlists_context_ops = {
        .flags = COPS_HAS_INFLIGHT,
 
        .alloc = execlists_context_alloc,
 
-       .pre_pin = execlists_context_pre_pin,
        .pin = execlists_context_pin,
-       .unpin = lrc_unpin,
-       .post_unpin = lrc_post_unpin,
+       .unpin = execlists_context_unpin,
 
        .enter = intel_context_enter_engine,
        .exit = intel_context_exit_engine,
@@ -3467,21 +3469,11 @@ static int virtual_context_alloc(struct intel_context 
*ce)
        return lrc_alloc(ce, ve->siblings[0]);
 }
 
-static int virtual_context_pre_pin(struct intel_context *ce,
-                                  struct i915_gem_ww_ctx *ww,
-                                  void **vaddr)
-{
-       struct virtual_engine *ve = container_of(ce, typeof(*ve), context);
-
-        /* Note: we must use a real engine class for setting up reg state */
-       return __execlists_context_pre_pin(ce, ve->siblings[0], ww, vaddr);
-}
-
-static int virtual_context_pin(struct intel_context *ce, void *vaddr)
+static int virtual_context_pin(struct intel_context *ce, struct 
i915_gem_ww_ctx *ww)
 {
        struct virtual_engine *ve = container_of(ce, typeof(*ve), context);
 
-       return lrc_pin(ce, ve->siblings[0], vaddr);
+       return __execlists_context_pin(ce, ve->siblings[0], ww);
 }
 
 static void virtual_context_enter(struct intel_context *ce)
@@ -3511,10 +3503,8 @@ static const struct intel_context_ops 
virtual_context_ops = {
 
        .alloc = virtual_context_alloc,
 
-       .pre_pin = virtual_context_pre_pin,
        .pin = virtual_context_pin,
-       .unpin = lrc_unpin,
-       .post_unpin = lrc_post_unpin,
+       .unpin = execlists_context_unpin,
 
        .enter = virtual_context_enter,
        .exit = virtual_context_exit,
diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c 
b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index 5d42a12ef3d6..85b6a4d60e07 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -467,9 +467,8 @@ static int ring_context_init_default_state(struct 
intel_context *ce,
        return 0;
 }
 
-static int ring_context_pre_pin(struct intel_context *ce,
-                               struct i915_gem_ww_ctx *ww,
-                               void **unused)
+static int ring_context_pin(struct intel_context *ce,
+                           struct i915_gem_ww_ctx *ww)
 {
        struct i915_address_space *vm;
        int err = 0;
@@ -498,10 +497,6 @@ static void __context_unpin_ppgtt(struct intel_context *ce)
 }
 
 static void ring_context_unpin(struct intel_context *ce)
-{
-}
-
-static void ring_context_post_unpin(struct intel_context *ce)
 {
        __context_unpin_ppgtt(ce);
 }
@@ -572,11 +567,6 @@ static int ring_context_alloc(struct intel_context *ce)
        return 0;
 }
 
-static int ring_context_pin(struct intel_context *ce, void *unused)
-{
-       return 0;
-}
-
 static void ring_context_reset(struct intel_context *ce)
 {
        intel_ring_reset(ce->ring, ce->ring->emit);
@@ -586,10 +576,8 @@ static void ring_context_reset(struct intel_context *ce)
 static const struct intel_context_ops ring_context_ops = {
        .alloc = ring_context_alloc,
 
-       .pre_pin = ring_context_pre_pin,
        .pin = ring_context_pin,
        .unpin = ring_context_unpin,
-       .post_unpin = ring_context_post_unpin,
 
        .enter = intel_context_enter_engine,
        .exit = intel_context_exit_engine,
diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c 
b/drivers/gpu/drm/i915/gt/mock_engine.c
index 68970398e4ef..3e4f6ef705c9 100644
--- a/drivers/gpu/drm/i915/gt/mock_engine.c
+++ b/drivers/gpu/drm/i915/gt/mock_engine.c
@@ -123,10 +123,6 @@ static void mock_context_unpin(struct intel_context *ce)
 {
 }
 
-static void mock_context_post_unpin(struct intel_context *ce)
-{
-}
-
 static void mock_context_destroy(struct kref *ref)
 {
        struct intel_context *ce = container_of(ref, typeof(*ce), ref);
@@ -166,13 +162,7 @@ static int mock_context_alloc(struct intel_context *ce)
        return 0;
 }
 
-static int mock_context_pre_pin(struct intel_context *ce,
-                               struct i915_gem_ww_ctx *ww, void **unused)
-{
-       return 0;
-}
-
-static int mock_context_pin(struct intel_context *ce, void *unused)
+static int mock_context_pin(struct intel_context *ce, struct i915_gem_ww_ctx 
*ww)
 {
        return 0;
 }
@@ -184,10 +174,8 @@ static void mock_context_reset(struct intel_context *ce)
 static const struct intel_context_ops mock_context_ops = {
        .alloc = mock_context_alloc,
 
-       .pre_pin = mock_context_pre_pin,
        .pin = mock_context_pin,
        .unpin = mock_context_unpin,
-       .post_unpin = mock_context_post_unpin,
 
        .enter = intel_context_enter_engine,
        .exit = intel_context_exit_engine,
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 e9c237b18692..5b26c0103429 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -437,25 +437,32 @@ static int guc_context_alloc(struct intel_context *ce)
        return lrc_alloc(ce, ce->engine);
 }
 
-static int guc_context_pre_pin(struct intel_context *ce,
-                              struct i915_gem_ww_ctx *ww,
-                              void **vaddr)
+static int guc_context_pin(struct intel_context *ce, struct i915_gem_ww_ctx 
*ww)
 {
-       return lrc_pre_pin(ce, ce->engine, ww, vaddr);
+       void *vaddr;
+       int err;
+
+       err = lrc_pre_pin(ce, ce->engine, ww, &vaddr);
+       if (err)
+               return err;
+
+       err = lrc_pin(ce, ce->engine, vaddr);
+       if (err)
+               lrc_post_unpin(ce);
+       return err;
 }
 
-static int guc_context_pin(struct intel_context *ce, void *vaddr)
+static void guc_context_unpin(struct intel_context *ce)
 {
-       return lrc_pin(ce, ce->engine, vaddr);
+       lrc_unpin(ce);
+       lrc_post_unpin(ce);
 }
 
 static const struct intel_context_ops guc_context_ops = {
        .alloc = guc_context_alloc,
 
-       .pre_pin = guc_context_pre_pin,
        .pin = guc_context_pin,
-       .unpin = lrc_unpin,
-       .post_unpin = lrc_post_unpin,
+       .unpin = guc_context_unpin,
 
        .enter = intel_context_enter_engine,
        .exit = intel_context_exit_engine,
-- 
2.31.0

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