From 08c2571fb48d41731c81cc402acabf709523c831 Mon Sep 17 00:00:00 2001
From: Brian <brian.paul@tungstengraphics.com>
Date: Fri, 11 Jan 2008 12:04:55 -0700
Subject: Cell: initial work for a hw-like batch buffer system

---
 src/mesa/pipe/cell/common.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/mesa/pipe/cell/common.h')

diff --git a/src/mesa/pipe/cell/common.h b/src/mesa/pipe/cell/common.h
index c00cee6a02..450ca1d722 100644
--- a/src/mesa/pipe/cell/common.h
+++ b/src/mesa/pipe/cell/common.h
@@ -47,13 +47,23 @@
 #define TILE_SIZE 32
 
 
+/**
+ * The low byte of a mailbox word contains the command opcode.
+ * Remaining higher bytes are command specific.
+ */
+#define CELL_CMD_OPCODE_MASK 0xf
+
 #define CELL_CMD_EXIT          1
 #define CELL_CMD_FRAMEBUFFER   2
 #define CELL_CMD_CLEAR_SURFACE 3
 #define CELL_CMD_FINISH        4
 #define CELL_CMD_RENDER        5
+#define CELL_CMD_BATCH         6
 
 
+#define CELL_NUM_BATCH_BUFFERS 2
+#define CELL_BATCH_BUFFER_SIZE 1024  /**< 16KB would be the max */
+
 
 /**
  * Tell SPUs about the framebuffer size, location
@@ -90,12 +100,23 @@ struct cell_command_render
 } ALIGN16_ATTRIB;
 
 
+/**
+ * Execute a command/batch buffer.
+ */
+struct cell_command_batch
+{
+   ushort buffer;    /**< which buffer [0, CELL_NUM_CMD_BUFFFERS-1] */
+   ushort length;    /**< in bytes */
+} ALIGN16_ATTRIB;
+
+
 /** XXX unions don't seem to work */
 struct cell_command
 {
    struct cell_command_framebuffer fb;
    struct cell_command_clear_surface clear;
    struct cell_command_render render;
+   struct cell_command_batch batch;
 } ALIGN16_ATTRIB;
 
 
@@ -105,6 +126,7 @@ struct cell_init_info
    unsigned id;
    unsigned num_spus;
    struct cell_command *cmd;
+   ubyte *batch_buffers[CELL_NUM_BATCH_BUFFERS];
 } ALIGN16_ATTRIB;
 
 
-- 
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