From 2a93cee8e28ad88c848b378fb10551cf5597bb81 Mon Sep 17 00:00:00 2001
From: Karl Kurbjun <kkurbjun@gmail.com>
Date: Mon, 9 Nov 2009 00:38:10 +0000
Subject: [PATCH] M:Robe 500 - Enable ASM optimized ATA interface improving
 disk access speed.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23572 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/SOURCES                                       | 1 +
 firmware/target/arm/ata-as-arm.S                       | 6 ++++++
 firmware/target/arm/tms320dm320/mrobe-500/ata-target.h | 9 +++++++++
 3 files changed, 16 insertions(+)

diff --git a/firmware/SOURCES b/firmware/SOURCES
index adb54c7a35..18106df2cf 100644
--- a/firmware/SOURCES
+++ b/firmware/SOURCES
@@ -881,6 +881,7 @@ target/arm/tms320dm320/uart-dm320.c
 
 #ifdef MROBE_500
 #ifndef SIMULATOR
+target/arm/ata-as-arm.S
 target/arm/lcd-as-memframe.S
 target/arm/mmu-arm.S
 target/arm/tms320dm320/mrobe-500/adc-mr500.c
diff --git a/firmware/target/arm/ata-as-arm.S b/firmware/target/arm/ata-as-arm.S
index c1475c0a5a..b1cafc2221 100644
--- a/firmware/target/arm/ata-as-arm.S
+++ b/firmware/target/arm/ata-as-arm.S
@@ -38,6 +38,12 @@
 #elif defined(CREATIVE_ZVx) /* Zen Vision could have an other address */
     .text
     .equ    .ata_port, 0x50FEE000
+#elif defined(MROBE_500)
+    .text
+    .equ    .ata_port, 0x50400000
+#else
+    /* This isn't vaild, but it does it's job, not sure what this should be */
+    #error ata_port undefined!
 #endif
 
     .align  2
diff --git a/firmware/target/arm/tms320dm320/mrobe-500/ata-target.h b/firmware/target/arm/tms320dm320/mrobe-500/ata-target.h
index 4d0e0433c5..2a9d3e8010 100644
--- a/firmware/target/arm/tms320dm320/mrobe-500/ata-target.h
+++ b/firmware/target/arm/tms320dm320/mrobe-500/ata-target.h
@@ -22,9 +22,18 @@
 #ifndef ATA_TARGET_H
 #define ATA_TARGET_H
 
+#if 0
 /* Plain C read & write loops */
 #define PREFER_C_READING
 #define PREFER_C_WRITING
+#else
+/* ASM optimized reading and writing */
+#define ATA_OPTIMIZED_READING
+#define ATA_OPTIMIZED_WRITING
+
+void copy_read_sectors(const unsigned char* buf, int wordcount);
+void copy_write_sectors(const unsigned char* buf, int wordcount);
+#endif
 
 #define ATA_IOBASE      0x50000000
 #define REGISTER_OFFSET (ATA_IOBASE+0x00400000) /* A21 = High */