mboxd: Update mboxd to implement protocol V2 and add dbus support
Version 2 of the mbox protocol contains a few changes such as:
- All sizes are in block size
- Adds an erase command
- Adds new response codes
- Adds new BMC events
- Open windows commands now take a size directive
Update the mailbox daemon to support version 2 of the protocol which
includes implementing all of the V2 functionality. Also entirely refactor
the mboxd.c code to make it more modular improving readability and
maintainability.
At the same time improve the functionality by adding:
- Multiple windows in the daemon (still only one active window) to cache
flash contents
- Implement a dbus interface to allow interaction with the daemon
- Handle sigterm and sigint and terminate cleanly
The previous implementation utilised the entire reserved memory region.
Update the daemon so that on the command line the number of windows and
the size of each which the reserved memory region will be split into can
be specified. The reserved memory region is then divided between the
windows, however there can still only be one "active" window at a time.
The daemon uses these windows to cache the flash contents meaning the
flash doesn't have to be copied when the host requests access assuming
the daemon already has a copy.
A dbus interface is added so that commands can be sent to the daemon to
control it's operation from the bmc. These include suspending and resuming
the daemon to synchronise flash access, telling the daemon to point the lpc
mapping back to flash and telling the daemon when the flash has been
modified out from under it.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Change-Id: I10be01a395c2bec437cf2c825fdd144580b60dbc
diff --git a/mboxd_windows.h b/mboxd_windows.h
new file mode 100644
index 0000000..90e1d46
--- /dev/null
+++ b/mboxd_windows.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2016 IBM
+ *
+ * Licensed 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 MBOXD_WINDOWS_H
+#define MBOXD_WINDOWS_H
+
+#define NO_FLUSH false
+#define WITH_FLUSH true
+
+/* Initialisation Functions */
+void init_window_state(struct window_context *window, uint32_t size);
+int init_window_mem(struct mbox_context *context);
+/* Write From Window Functions */
+int write_from_window_v1(struct mbox_context *context,
+ uint32_t offset_bytes, uint32_t count_bytes);
+int write_from_window(struct mbox_context *context, uint32_t offset,
+ uint32_t count, uint8_t type);
+/* Window Management Functions */
+void alloc_window_dirty_bytemap(struct mbox_context *context);
+void free_window_dirty_bytemap(struct mbox_context *context);
+int set_window_bytemap(struct mbox_context *context, struct window_context *cur,
+ uint32_t offset, uint32_t size, uint8_t val);
+void close_current_window(struct mbox_context *context, bool set_bmc_event,
+ uint8_t flags);
+void reset_window(struct mbox_context *context, struct window_context *window);
+void reset_all_windows(struct mbox_context *context, bool set_bmc_event);
+struct window_context *find_oldest_window(struct mbox_context *context);
+struct window_context *search_windows(struct mbox_context *context,
+ uint32_t offset, bool exact);
+int create_map_window(struct mbox_context *context,
+ struct window_context **this_window,
+ uint32_t offset, bool exact);
+
+#endif /* MBOXD_WINDOWS_H */