From 983fda8391fa0ccfd4e0fd0bfb5a5e662e07b222 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Thu, 28 Oct 2004 00:09:35 +0000
Subject: Patch by TsiChung Liew, 23 Sep 2004: - add support for MPC8220 CPU -
 Add support for Alaska and Yukon boards

---
 cpu/mpc8220/dma.h | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 cpu/mpc8220/dma.h

(limited to 'cpu/mpc8220/dma.h')

diff --git a/cpu/mpc8220/dma.h b/cpu/mpc8220/dma.h
new file mode 100644
index 0000000..d06ee63
--- /dev/null
+++ b/cpu/mpc8220/dma.h
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * This file is based on code
+ * (C) Copyright Motorola, Inc., 2000
+ *
+ * MPC8220 dma header file
+ */
+
+#ifndef __MPC8220_DMA_H
+#define __MPC8220_DMA_H
+
+#include <common.h>
+#include <mpc8220.h>
+
+/* Task number assignment */
+#define FEC_RECV_TASK_NO            0
+#define FEC_XMIT_TASK_NO            1
+
+/*---------------------------------------------------------------------
+ * Stuff for Ethernet Tx/Rx tasks
+ *---------------------------------------------------------------------
+ */
+
+/* Layout of Ethernet controller Parameter SRAM area:
+ * ----------------------------------------------------------------
+ * 0x00: TBD_BASE, base address of TX BD ring
+ * 0x04: TBD_NEXT, address of next TX BD to be processed
+ * 0x08: RBD_BASE, base address of RX BD ring
+ * 0x0C: RBD_NEXT, address of next RX BD to be processed
+ * ---------------------------------------------------------------
+ * ALL PARAMETERS ARE ALL LONGWORDS (FOUR BYTES EACH).
+ */
+
+/* base address of SRAM area to store parameters used by Ethernet tasks */
+#define FEC_PARAM_BASE  (MMAP_SRAM + 0x5b00)
+
+/* base address of SRAM area for buffer descriptors */
+#define FEC_BD_BASE     (MMAP_SRAM + 0x5b20)
+
+/*---------------------------------------------------------------------
+ * common shortcuts  used  by driver C code
+ *---------------------------------------------------------------------
+ */
+
+/* Disable SmartDMA task */
+#define DMA_TASK_DISABLE(tasknum)						\
+{										\
+	volatile ushort *tcr = (ushort *)(MMAP_DMA + 0x0000001c + 2 * tasknum); \
+	*tcr = (*tcr) & (~0x8000);						\
+}
+
+/* Enable SmartDMA task */
+#define DMA_TASK_ENABLE(tasknum)						\
+{										\
+	volatile ushort *tcr = (ushort *) (MMAP_DMA + 0x0000001c + 2 * tasknum);\
+	*tcr = (*tcr)  | 0x8000;						\
+}
+
+/* Clear interrupt pending bits */
+#define DMA_CLEAR_IEVENT(tasknum)						\
+{										\
+	struct mpc8220_dma *dma = (struct mpc8220_dma *)MMAP_DMA;		\
+	dma->IntPend = (1 << tasknum);						\
+}
+
+#endif  /* __MPC8220_DMA_H */
-- 
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