1 files changed, 329 insertions, 0 deletions
diff --git a/hw/vigs/vigs_protocol.h b/hw/vigs/vigs_protocol.h
new file mode 100644
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+++ b/hw/vigs/vigs_protocol.h
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+/*
+ * vigs
+ *
+ * Copyright (c) 2000 - 2013 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Contact:
+ * Stanislav Vorobiov <s.vorobiov@samsung.com>
+ * Jinhyung Jo <jinhyung.jo@samsung.com>
+ * YeongKyoon Lee <yeongkyoon.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Contributors:
+ * - S-Core Co., Ltd
+ *
+ */
+
+#ifndef _VIGS_PROTOCOL_H_
+#define _VIGS_PROTOCOL_H_
+
+/*
+ * VIGS protocol is a multiple request-single response protocol.
+ *
+ * + Requests come batched.
+ * + The response is written after the request batch.
+ *
+ * Not all commands can be batched, only commands that don't have response
+ * data can be batched.
+ */
+
+/*
+ * Bump this whenever protocol changes.
+ */
+#define VIGS_PROTOCOL_VERSION 14
+
+typedef signed char vigsp_s8;
+typedef signed short vigsp_s16;
+typedef signed int vigsp_s32;
+typedef signed long long vigsp_s64;
+typedef unsigned char vigsp_u8;
+typedef unsigned short vigsp_u16;
+typedef unsigned int vigsp_u32;
+typedef unsigned long long vigsp_u64;
+
+typedef vigsp_u32 vigsp_bool;
+typedef vigsp_u32 vigsp_surface_id;
+typedef vigsp_u32 vigsp_offset;
+typedef vigsp_u32 vigsp_color;
+
+typedef enum
+{
+    vigsp_cmd_init = 0x0,
+    vigsp_cmd_reset = 0x1,
+    vigsp_cmd_exit = 0x2,
+    vigsp_cmd_create_surface = 0x3,
+    vigsp_cmd_destroy_surface = 0x4,
+    vigsp_cmd_set_root_surface = 0x5,
+    vigsp_cmd_update_vram = 0x6,
+    vigsp_cmd_update_gpu = 0x7,
+    vigsp_cmd_copy = 0x8,
+    vigsp_cmd_solid_fill = 0x9,
+} vigsp_cmd;
+
+typedef enum
+{
+    /*
+     * Start from 0x1 to detect host failures on target.
+     */
+    vigsp_status_success = 0x1,
+    vigsp_status_bad_call = 0x2,
+    vigsp_status_exec_error = 0x3,
+} vigsp_status;
+
+typedef enum
+{
+    vigsp_surface_bgrx8888 = 0x0,
+    vigsp_surface_bgra8888 = 0x1,
+} vigsp_surface_format;
+
+#pragma pack(1)
+
+struct vigsp_point
+{
+    vigsp_u32 x;
+    vigsp_u32 y;
+};
+
+struct vigsp_size
+{
+    vigsp_u32 w;
+    vigsp_u32 h;
+};
+
+struct vigsp_rect
+{
+    struct vigsp_point pos;
+    struct vigsp_size size;
+};
+
+struct vigsp_copy
+{
+    struct vigsp_point from;
+    struct vigsp_point to;
+    struct vigsp_size size;
+};
+
+struct vigsp_cmd_batch_header
+{
+    vigsp_u32 num_requests;
+};
+
+struct vigsp_cmd_request_header
+{
+    vigsp_cmd cmd;
+
+    /*
+     * Request size starting from request header.
+     */
+    vigsp_u32 size;
+};
+
+struct vigsp_cmd_response_header
+{
+    vigsp_status status;
+};
+
+/*
+ * cmd_init
+ *
+ * First command to be sent, client passes its protocol version
+ * and receives server's in response. If 'client_version' doesn't match
+ * 'server_version' then initialization is considered failed. This
+ * is typically called on target's DRM driver load.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_init_request
+{
+    vigsp_u32 client_version;
+};
+
+struct vigsp_cmd_init_response
+{
+    vigsp_u32 server_version;
+};
+
+/*
+ * @}
+ */
+
+/*
+ * cmd_reset
+ *
+ * Destroys all surfaces but root surface, this typically happens
+ * or DRM's lastclose.
+ *
+ * @{
+ * @}
+ */
+
+/*
+ * cmd_exit
+ *
+ * Destroys all surfaces and transitions into uninitialized state, this
+ * typically happens when target's DRM driver gets unloaded.
+ *
+ * @{
+ * @}
+ */
+
+/*
+ * cmd_create_surface
+ *
+ * Called for each surface created. Client passes 'id' of the surface,
+ * all further operations must be carried out using this is. 'id' is
+ * unique across whole target system.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_create_surface_request
+{
+    vigsp_u32 width;
+    vigsp_u32 height;
+    vigsp_u32 stride;
+    vigsp_surface_format format;
+    vigsp_surface_id id;
+};
+
+/*
+ * @}
+ */
+
+/*
+ * cmd_destroy_surface
+ *
+ * Destroys the surface identified by 'id'. Surface 'id' may not be used
+ * after this call and its id can be assigned to some other surface right
+ * after this call.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_destroy_surface_request
+{
+    vigsp_surface_id id;
+};
+
+/*
+ * @}
+ */
+
+/*
+ * cmd_set_root_surface
+ *
+ * Sets surface identified by 'id' as new root surface. Root surface is the
+ * one that's displayed on screen. Root surface must reside in VRAM
+ * all the time, pass 'offset' in VRAM here.
+ *
+ * Pass 0 as id in order to reset the root surface.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_set_root_surface_request
+{
+    vigsp_surface_id id;
+    vigsp_offset offset;
+};
+
+/*
+ * @}
+ */
+
+/*
+ * cmd_update_vram
+ *
+ * Updates 'sfc_id' in vram.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_update_vram_request
+{
+    vigsp_surface_id sfc_id;
+    vigsp_offset offset;
+};
+
+/*
+ * @}
+ */
+
+/*
+ * cmd_update_gpu
+ *
+ * Updates 'sfc_id' in GPU.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_update_gpu_request
+{
+    vigsp_surface_id sfc_id;
+    vigsp_offset offset;
+    vigsp_u32 num_entries;
+    struct vigsp_rect entries[0];
+};
+
+/*
+ * @}
+ */
+
+/*
+ * cmd_copy
+ *
+ * Copies parts of surface 'src_id' to
+ * surface 'dst_id'.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_copy_request
+{
+    vigsp_surface_id src_id;
+    vigsp_surface_id dst_id;
+    vigsp_u32 num_entries;
+    struct vigsp_copy entries[0];
+};
+
+/*
+ * @}
+ */
+
+/*
+ * cmd_solid_fill
+ *
+ * Fills surface 'sfc_id' with color 'color' at 'entries'.
+ *
+ * @{
+ */
+
+struct vigsp_cmd_solid_fill_request
+{
+    vigsp_surface_id sfc_id;
+    vigsp_color color;
+    vigsp_u32 num_entries;
+    struct vigsp_rect entries[0];
+};
+
+/*
+ * @}
+ */
+
+#pragma pack()
+
+#endif