From: Yiwei Zhang <zzyiwei@chromium.org>
Date: Mon, 13 Mar 2023 03:24:55 +0000 (-0700)
Subject: venus: switch to use 64bit roundtrip seqno
X-Git-Tag: upstream/23.3.3~11674
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9b7a78cac6704b64823944eab42b0c8e129c70f6;p=platform%2Fupstream%2Fmesa.git

venus: switch to use 64bit roundtrip seqno

This is to prepare for later async roundtrip waiting while seamlessly
compatible with legacy way.

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21716>
---

diff --git a/src/virtio/vulkan/vn_device_memory.h b/src/virtio/vulkan/vn_device_memory.h
index 88a602c..a2c4848 100644
--- a/src/virtio/vulkan/vn_device_memory.h
+++ b/src/virtio/vulkan/vn_device_memory.h
@@ -31,7 +31,7 @@ struct vn_device_memory {
    struct vn_renderer_bo *base_bo;
    /* enforce kernel and ring ordering between memory export and free */
    bool bo_roundtrip_seqno_valid;
-   uint32_t bo_roundtrip_seqno;
+   uint64_t bo_roundtrip_seqno;
    VkDeviceSize base_offset;
 
    VkDeviceSize map_end;
diff --git a/src/virtio/vulkan/vn_instance.c b/src/virtio/vulkan/vn_instance.c
index 3f03eac..3405321 100644
--- a/src/virtio/vulkan/vn_instance.c
+++ b/src/virtio/vulkan/vn_instance.c
@@ -277,7 +277,7 @@ vn_instance_init_renderer(struct vn_instance *instance)
 
 VkResult
 vn_instance_submit_roundtrip(struct vn_instance *instance,
-                             uint32_t *roundtrip_seqno)
+                             uint64_t *roundtrip_seqno)
 {
    uint32_t write_ring_extra_data[8];
    struct vn_cs_encoder local_enc = VN_CS_ENCODER_INITIALIZER_LOCAL(
@@ -285,7 +285,8 @@ vn_instance_submit_roundtrip(struct vn_instance *instance,
 
    /* submit a vkWriteRingExtraMESA through the renderer */
    mtx_lock(&instance->ring.roundtrip_mutex);
-   const uint32_t seqno = instance->ring.roundtrip_next++;
+   const uint64_t seqno = instance->ring.roundtrip_next++;
+   /* clamp to 32bit for legacy ring extra based roundtrip waiting */
    vn_encode_vkWriteRingExtraMESA(&local_enc, 0, instance->ring.id, 0, seqno);
    VkResult result =
       vn_renderer_submit_simple(instance->renderer, write_ring_extra_data,
@@ -305,7 +306,7 @@ roundtrip_seqno_ge(uint32_t a, uint32_t b)
 
 void
 vn_instance_wait_roundtrip(struct vn_instance *instance,
-                           uint32_t roundtrip_seqno)
+                           uint64_t roundtrip_seqno)
 {
    VN_TRACE_FUNC();
    const struct vn_ring *ring = &instance->ring.ring;
@@ -313,6 +314,7 @@ vn_instance_wait_roundtrip(struct vn_instance *instance,
    uint32_t iter = 0;
    do {
       const uint32_t cur = atomic_load_explicit(ptr, memory_order_acquire);
+      /* clamp to 32bit for legacy ring extra based roundtrip waiting */
       if (roundtrip_seqno_ge(cur, roundtrip_seqno))
          break;
       vn_relax(ring, &iter, "roundtrip");
diff --git a/src/virtio/vulkan/vn_instance.h b/src/virtio/vulkan/vn_instance.h
index 134b0c5..a72a2fa 100644
--- a/src/virtio/vulkan/vn_instance.h
+++ b/src/virtio/vulkan/vn_instance.h
@@ -55,7 +55,7 @@ struct vn_instance {
 
       /* to synchronize renderer/ring */
       mtx_t roundtrip_mutex;
-      uint32_t roundtrip_next;
+      uint64_t roundtrip_next;
    } ring;
 
    /* XXX staged features to be merged to core venus protocol */
@@ -95,16 +95,16 @@ VK_DEFINE_HANDLE_CASTS(vn_instance,
 
 VkResult
 vn_instance_submit_roundtrip(struct vn_instance *instance,
-                             uint32_t *roundtrip_seqno);
+                             uint64_t *roundtrip_seqno);
 
 void
 vn_instance_wait_roundtrip(struct vn_instance *instance,
-                           uint32_t roundtrip_seqno);
+                           uint64_t roundtrip_seqno);
 
 static inline void
 vn_instance_roundtrip(struct vn_instance *instance)
 {
-   uint32_t roundtrip_seqno;
+   uint64_t roundtrip_seqno;
    if (vn_instance_submit_roundtrip(instance, &roundtrip_seqno) == VK_SUCCESS)
       vn_instance_wait_roundtrip(instance, roundtrip_seqno);
 }