sorted sources per functionality in different subdirs

2013-12-19 13:02:39 +00:00
parent b7d4c4e91a
commit 72eb1494b0
47 changed files with 48 additions and 148 deletions
--- a/dma/dma.c
+++ b/dma/dma.c
@@ -0,0 +1,123 @@
+/*
+ * dma.c
+ *
+ *
+ * This file is part of BaS_gcc.
+ *
+ * BaS_gcc 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BaS_gcc 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 BaS_gcc.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  Created on: 26.02.2013
+ *      Author: Markus Fröschle
+ */
+
+#include "dma.h"
+#include <MCD_dma.h>
+#include "mcd_initiators.h"
+#include "bas_printf.h"
+#include "bas_string.h"
+#include "cache.h"
+
+#if MACHINE_FIREBEE
+#include "firebee.h"
+#elif MACHINE_M5484LITE
+#include "m5484l.h"
+#endif /* MACHINE_FIREBEE */
+
+extern char _SYS_SRAM[];
+#define SYS_SRAM &_SYS_SRAM[0]
+
+void print_sp(void)
+{
+	register char *sp asm("sp");
+	xprintf("sp=%x\r\n", sp);
+}
+
+
+void *dma_memcpy(void *dst, void *src, size_t n)
+{
+	int ret;
+	volatile int32_t time;
+	volatile int32_t start;
+	volatile int32_t end;
+
+	start = MCF_SLT0_SCNT;
+	ret = MCD_startDma(1, src, 4, dst, 4, n, 4, DMA_ALWAYS, 0, MCD_SINGLE_DMA, 0);
+	if (ret == MCD_OK)
+	{
+		xprintf("DMA on channel 1 successfully started\r\n");
+	}
+
+	do
+	{
+		ret = MCD_dmaStatus(1);
+#ifdef _NOT_USED_ /* suppress annoying printout for now */
+		switch (ret)
+		{
+		case MCD_NO_DMA:
+			xprintf("MCD_NO_DMA: no DMA active on this channel\r\n");
+			return NULL;
+			break;
+		case MCD_IDLE:
+			xprintf("MCD_IDLE: DMA defined but not active (initiator not ready)\r\n");
+			break;
+		case MCD_RUNNING:
+			xprintf("MCD_RUNNING: DMA active and working on this channel\r\n");
+			break;
+		case MCD_PAUSED:
+			xprintf("MCD_PAUSED: DMA defined and enabled, but currently paused\r\n");
+			break;
+		case MCD_HALTED:
+			xprintf("MCD_HALTED: DMA killed\r\n");
+			return NULL;
+			break;
+		case MCD_DONE:
+			xprintf("MCD_DONE: DMA finished\r\n");
+			break;
+		case MCD_CHANNEL_INVALID:
+			xprintf("MCD_CHANNEL_INVALID: invalid DMA channel\r\n");
+			return NULL;
+			break;
+		default:
+			xprintf("unknown DMA status %d\r\n", ret);
+			break;
+		}
+#endif
+	} while (ret != MCD_DONE);
+
+	end = MCF_SLT0_SCNT;
+	time = (start - end) / (SYSCLK / 1000) / 1000;
+	xprintf("took %d ms (%f Mbytes/second)\r\n",	time, n / (float) time / 1000.0);
+
+	return dst;
+}
+
+int dma_init(void)
+{
+	int res;
+
+	xprintf("MCD DMA API initialization: ");
+	res = MCD_initDma((dmaRegs *) &_MBAR[0x8000], SYS_SRAM, MCD_RELOC_TASKS | MCD_COMM_PREFETCH_EN);
+	if (res != MCD_OK)
+	{
+		xprintf("DMA API initialization failed (0x%x)\r\n", res);
+		return 0;
+	}
+
+	// test
+	dma_memcpy((void *) 0x10000, (void *) 0x03e00000, 0x00100000);	/* copy one megabyte of flash to RAM */
+
+	xprintf("DMA finished\r\n");
+	return 0;
+}
+