thermosphere: add TransportInterface abstraction layer

thermosphere/src/transport_interface.h

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "utils.h"
+#include "spinlock.h"
+
+#define MAX_TRANSPORT_INTERFACES    4
+
+typedef enum TransportInterfaceType {
+    TRANSPORT_INTERFACE_TYPE_UART = 0,
+
+    TRANSPORT_INTERFACE_TYPE_MAX,
+} TransportInterfaceType;
+
+struct TransportInterface;
+typedef struct TransportInterface TransportInterface;
+typedef size_t (*TransportInterfaceReceiveDataCallback)(TransportInterface *iface, void *ctx);
+typedef void (*TransportInterfaceProcessDataCallback)(TransportInterface *iface, void *ctx, size_t dataSize);
+
+void transportInterfaceInitLayer(void);
+TransportInterface *transportInterfaceCreate(
+    TransportInterfaceType type,
+    u32 id,
+    u32 flags,
+    TransportInterfaceReceiveDataCallback receiveDataCallback,
+    TransportInterfaceProcessDataCallback processDataCallback,
+    void *ctx
+);
+void transportInterfaceAcquire(TransportInterface *iface);
+void transportInterfaceRelease(TransportInterface *iface);
+
+TransportInterface *transportInterfaceFindByIrqId(u16 irqId);
+void transportInterfaceSetInterruptAffinity(TransportInterface *iface, u8 affinity);
+
+TransportInterface *transportInterfaceIrqHandlerTopHalf(u16 irqId);
+void transportInterfaceIrqHandlerBottomHalf(TransportInterface *iface);
+
+void transportInterfaceWriteData(TransportInterface *iface, const void *buffer, size_t size);
+void transportInterfaceReadData(TransportInterface *iface, void *buffer, size_t size);
+size_t transportInterfaceReadDataMax(TransportInterface *iface, void *buffer, size_t maxSize);
+size_t transportInterfaceReadDataUntil(TransportInterface *iface, char *buffer, size_t maxSize, char delimiter);