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-rw-r--r--include/hw/dma/sifive_pdma.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/include/hw/dma/sifive_pdma.h b/include/hw/dma/sifive_pdma.h
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+++ b/include/hw/dma/sifive_pdma.h
@@ -0,0 +1,57 @@
+/*
+ * SiFive Platform DMA emulation
+ *
+ * Copyright (c) 2020 Wind River Systems, Inc.
+ *
+ * Author:
+ * Bin Meng <bin.meng@windriver.com>
+ *
+ * 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 2 or
+ * (at your option) version 3 of the License.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SIFIVE_PDMA_H
+#define SIFIVE_PDMA_H
+
+struct sifive_pdma_chan {
+ uint32_t control;
+ uint32_t next_config;
+ uint64_t next_bytes;
+ uint64_t next_dst;
+ uint64_t next_src;
+ uint32_t exec_config;
+ uint64_t exec_bytes;
+ uint64_t exec_dst;
+ uint64_t exec_src;
+ int state;
+};
+
+#define SIFIVE_PDMA_CHANS 4
+#define SIFIVE_PDMA_IRQS (SIFIVE_PDMA_CHANS * 2)
+#define SIFIVE_PDMA_REG_SIZE 0x100000
+#define SIFIVE_PDMA_CHAN_NO(reg) ((reg & (SIFIVE_PDMA_REG_SIZE - 1)) >> 12)
+
+typedef struct SiFivePDMAState {
+ SysBusDevice parent;
+ MemoryRegion iomem;
+ qemu_irq irq[SIFIVE_PDMA_IRQS];
+
+ struct sifive_pdma_chan chan[SIFIVE_PDMA_CHANS];
+} SiFivePDMAState;
+
+#define TYPE_SIFIVE_PDMA "sifive.pdma"
+
+#define SIFIVE_PDMA(obj) \
+ OBJECT_CHECK(SiFivePDMAState, (obj), TYPE_SIFIVE_PDMA)
+
+#endif /* SIFIVE_PDMA_H */