misc/goldfish_pipe: Refine the implementation

1.Merge goldfish_pipe_qemu.h into goldfish_pipe.c
2.Change all enum to macro

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

drivers/misc/goldfish_pipe_qemu.h

@@ -1,135 +0,0 @@
-/****************************************************************************
- * drivers/misc/goldfish_pipe_qemu.h
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.  The
- * ASF licenses this file to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the
- * License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- ****************************************************************************/
-
-#ifndef __GOLDFISH_PIPE_QEMU_H
-#define __GOLDFISH_PIPE_QEMU_H
-
-/* List of bitflags returned in status of CMD_POLL command */
-
-enum pipepollflags
-{
-  PIPE_POLL_IN = 1 << 0,
-  PIPE_POLL_OUT = 1 << 1,
-  PIPE_POLL_HUP = 1 << 2
-};
-
-/* Possible status values used to signal errors */
-
-enum pipeerrors
-{
-  PIPE_ERROR_INVAL = -1,
-  PIPE_ERROR_AGAIN = -2,
-  PIPE_ERROR_NOMEM = -3,
-  PIPE_ERROR_IO = -4
-};
-
-/* Bit-flags used to signal events from the emulator */
-
-enum pipewakeflags
-{
-  /* emulator closed pipe */
-
-  PIPE_WAKE_CLOSED = 1 << 0,
-
-  /* pipe can now be read from */
-
-  PIPE_WAKE_READ = 1 << 1,
-
-  /* pipe can now be written to */
-
-  PIPE_WAKE_WRITE = 1 << 2,
-
-  /* unlock this pipe's DMA buffer */
-
-  PIPE_WAKE_UNLOCK_DMA = 1 << 3,
-
-  /* unlock DMA buffer of the pipe shared to this pipe */
-
-  PIPE_WAKE_UNLOCK_DMA_SHARED = 1 << 4,
-};
-
-/* Possible pipe closing reasons */
-
-enum pipeclosereason
-{
-  /* guest sent a close command */
-
-  PIPE_CLOSE_GRACEFUL = 0,
-
-  /* guest rebooted, we're closing the pipes */
-
-  PIPE_CLOSE_REBOOT = 1,
-
-  /* close old pipes on snapshot load */
-
-  PIPE_CLOSE_LOAD_SNAPSHOT = 2,
-
-  /* some unrecoverable error on the pipe */
-
-  PIPE_CLOSE_ERROR = 3,
-};
-
-/* Bit flags for the 'flags' field */
-
-enum pipeflagsbits
-{
-  BIT_CLOSED_ON_HOST = 0,        /* pipe closed by host */
-  BIT_WAKE_ON_WRITE = 1,         /* want to be woken on writes */
-  BIT_WAKE_ON_READ = 2,          /* want to be woken on reads */
-};
-
-enum piperegs
-{
-  PIPE_REG_CMD = 0,
-
-  PIPE_REG_SIGNAL_BUFFER_HIGH = 4,
-  PIPE_REG_SIGNAL_BUFFER = 8,
-  PIPE_REG_SIGNAL_BUFFER_COUNT = 12,
-
-  PIPE_REG_OPEN_BUFFER_HIGH = 20,
-  PIPE_REG_OPEN_BUFFER = 24,
-
-  PIPE_REG_VERSION = 36,
-
-  PIPE_REG_GET_SIGNALLED = 48,
-};
-
-enum pipecmdcode
-{
-  /* to be used by the pipe device itself */
-
-  PIPE_CMD_OPEN = 1,
-
-  PIPE_CMD_CLOSE,
-  PIPE_CMD_POLL,
-  PIPE_CMD_WRITE,
-  PIPE_CMD_WAKE_ON_WRITE,
-  PIPE_CMD_READ,
-  PIPE_CMD_WAKE_ON_READ,
-
-  /**
-   * TODO(zyy): implement a deferred read/write execution to allow
-   * parallel processing of pipe operations on the host.
-   */
-
-  PIPE_CMD_WAKE_ON_DONE_IO,
-};
-
-#endif /* __GOLDFISH_PIPE_QEMU_H */

include/nuttx/drivers/goldfish_pipe.h

@@ -51,7 +51,7 @@ extern "C"
  ****************************************************************************/
 
 #ifdef CONFIG_GOLDFISH_PIPE
-int goldfish_pipe_register(void *base, int irq);
+int goldfish_pipe_register(FAR void *base, int irq);
 #endif
 
 #undef EXTERN