sound blaster code doesn't work yet

[bootcensus] / src / dma.h

diff --git a/src/dma.h b/src/dma.h
new file mode 100644 (file)
index 0000000..8f469c0
--- /dev/null
+++ b/src/dma.h
@@ -0,0 +1,34 @@
+/*
+pcboot - bootable PC demo/game kernel
+Copyright (C) 2018  John Tsiombikas <nuclear@member.fsf.org>
+
+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 3 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, see <https://www.gnu.org/licenses/>.
+*/
+#ifndef DMA_H_
+#define DMA_H_
+
+#include <inttypes.h>
+
+enum {
+       DMA_SINGLE      = 0x01,
+       DMA_BLOCK       = 0x02,
+       DMA_CASCADE = DMA_SINGLE | DMA_BLOCK,
+       DMA_DECR        = 0x08,
+       DMA_AUTO        = 0x10
+};
+
+void dma_out(int chan, uint32_t phyaddr, int size, unsigned int flags);
+void dma_in(int chan, uint32_t phyaddr, int size, unsigned int flags);
+
+#endif /* DMA_H_ */