Implement svcMap/UnmapPhysicalMemory(Unsafe), svcSetUnsafeLimit

nx/include/switch/kernel/svc.h

@@ -500,6 +500,25 @@ Result svcGetInfo(u64* out, u64 id0, Handle handle, u64 id1);
 
 ///@}
 
+///@name Memory management
+///@{
+
+/**
+ * @brief Maps new heap memory at the desired address. [3.0.0+]
+ * @return Result code.
+ * @note Syscall number 0x2A.
+ */
+Result svcMapPhysicalMemory(void *address, u64 size);
+
+/**
+ * @brief Undoes the effects of \ref svcMapPhysicalMemory. [3.0.0+]
+ * @return Result code.
+ * @note Syscall number 0x2B.
+ */
+Result svcUnmapPhysicalMemory(void *address, u64 size);
+
+///@}
+
 ///@name Process and thread management
 ///@{
 
@@ -581,6 +600,36 @@ Result svcCreateEvent(Handle* server_handle, Handle* client_handle);
 
 ///@}
 
+///@name Memory management
+///@{
+
+/**
+ * @brief Maps unsafe memory (usable for GPU DMA) for a system module at the desired address. [5.0.0+]
+ * @return Result code.
+ * @note Syscall number 0x48.
+ * @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
+ */
+Result svcMapPhysicalMemoryUnsafe(void *address, u64 size);
+
+/**
+ * @brief Undoes the effects of \ref svcMapPhysicalMemoryUnsafe. [5.0.0+]
+ * @return Result code.
+ * @note Syscall number 0x49.
+ * @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
+ */
+Result svcUnmapPhysicalMemoryUnsafe(void *address, u64 size);
+
+/**
+ * @brief Sets the system-wide limit for unsafe memory mappable using \ref svcMapPhysicalMemoryUnsafe. [5.0.0+]
+ * @return Result code.
+ * @note Syscall number 0x4A.
+ * @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
+ */
+Result svcSetUnsafeLimit(u64 size);
+
+///@}
+
+
 ///@name Just-in-time (JIT) compilation support
 ///@{
 

nx/source/kernel/svc.s

@@ -229,6 +229,16 @@ SVC_BEGIN svcGetInfo
 	ret
 SVC_END
 
+SVC_BEGIN svcMapPhysicalMemory
+	svc 0x2A
+	ret
+SVC_END
+
+SVC_BEGIN svcUnmapPhysicalMemory
+	svc 0x2B
+	ret
+SVC_END
+
 SVC_BEGIN svcGetResourceLimitLimitValue
 	str x0, [sp, #-16]!
 	svc 0x30
@@ -292,6 +302,21 @@ SVC_BEGIN svcCreateEvent
 	ret
 SVC_END
 
+SVC_BEGIN svcMapPhysicalMemoryUnsafe
+	svc 0x48
+	ret
+SVC_END
+
+SVC_BEGIN svcUnmapPhysicalMemoryUnsafe
+	svc 0x49
+	ret
+SVC_END
+
+SVC_BEGIN svcSetUnsafeLimit
+	svc 0x4A
+	ret
+SVC_END
+
 SVC_BEGIN svcCreateJitMemory
 	str x0, [sp, #-16]!
 	svc 0x4B