From 10c6d891190e407cf4fbcf6eb8ce2506ddf388ec Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Sat, 21 Apr 2018 14:40:51 -0400
Subject: memory_manager: Add implement CpuToGpuAddress.

---
 src/video_core/memory_manager.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/video_core/memory_manager.cpp')

diff --git a/src/video_core/memory_manager.cpp b/src/video_core/memory_manager.cpp
index 9bbbb7e65..25984439d 100644
--- a/src/video_core/memory_manager.cpp
+++ b/src/video_core/memory_manager.cpp
@@ -38,6 +38,9 @@ GPUVAddr MemoryManager::MapBufferEx(VAddr cpu_addr, u64 size) {
         PageSlot(*gpu_addr + offset) = cpu_addr + offset;
     }
 
+    MappedRegion region{cpu_addr, *gpu_addr, size};
+    mapped_regions.push_back(region);
+
     return *gpu_addr;
 }
 
@@ -49,6 +52,9 @@ GPUVAddr MemoryManager::MapBufferEx(VAddr cpu_addr, GPUVAddr gpu_addr, u64 size)
         PageSlot(gpu_addr + offset) = cpu_addr + offset;
     }
 
+    MappedRegion region{cpu_addr, gpu_addr, size};
+    mapped_regions.push_back(region);
+
     return gpu_addr;
 }
 
@@ -84,6 +90,17 @@ boost::optional<VAddr> MemoryManager::GpuToCpuAddress(GPUVAddr gpu_addr) {
     return base_addr + (gpu_addr & PAGE_MASK);
 }
 
+std::vector<GPUVAddr> MemoryManager::CpuToGpuAddress(VAddr cpu_addr) const {
+    std::vector<GPUVAddr> results;
+    for (const auto& region : mapped_regions) {
+        if (cpu_addr >= region.cpu_addr && cpu_addr < (region.cpu_addr + region.size)) {
+            u64 offset = cpu_addr - region.cpu_addr;
+            results.push_back(region.gpu_addr + offset);
+        }
+    }
+    return results;
+}
+
 bool MemoryManager::IsPageMapped(GPUVAddr gpu_addr) {
     return PageSlot(gpu_addr) != static_cast<u64>(PageStatus::Unmapped);
 }
-- 
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