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authorTimos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>2023-10-10 11:40:56 +0000
committerTimos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>2023-10-10 11:40:56 +0000
commite02cda008591317b1625707ff8e115a4841aa889 (patch)
treeaee302e3cf8b59ec2d32ec481be3d1afddfc8968 /include/hw/dma/xlnx-zdma.h
parentcc668e6b7e0ffd8c9d130513d12053cf5eda1d3b (diff)
Introduce Virtio-loopback epsilon release:
Epsilon release introduces a new compatibility layer which make virtio-loopback design to work with QEMU and rust-vmm vhost-user backend without require any changes. Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com> Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9
Diffstat (limited to 'include/hw/dma/xlnx-zdma.h')
-rw-r--r--include/hw/dma/xlnx-zdma.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/include/hw/dma/xlnx-zdma.h b/include/hw/dma/xlnx-zdma.h
new file mode 100644
index 000000000..efc75217d
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+++ b/include/hw/dma/xlnx-zdma.h
@@ -0,0 +1,84 @@
+/*
+ * QEMU model of the ZynqMP generic DMA
+ *
+ * Copyright (c) 2014 Xilinx Inc.
+ * Copyright (c) 2018 FEIMTECH AB
+ *
+ * Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com>,
+ * Francisco Iglesias <francisco.iglesias@feimtech.se>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef XLNX_ZDMA_H
+#define XLNX_ZDMA_H
+
+#include "hw/sysbus.h"
+#include "hw/register.h"
+#include "sysemu/dma.h"
+#include "qom/object.h"
+
+#define ZDMA_R_MAX (0x204 / 4)
+
+typedef enum {
+ DISABLED = 0,
+ ENABLED = 1,
+ PAUSED = 2,
+} XlnxZDMAState;
+
+typedef union {
+ struct {
+ uint64_t addr;
+ uint32_t size;
+ uint32_t attr;
+ };
+ uint32_t words[4];
+} XlnxZDMADescr;
+
+struct XlnxZDMA {
+ SysBusDevice parent_obj;
+ MemoryRegion iomem;
+ MemTxAttrs attr;
+ MemoryRegion *dma_mr;
+ AddressSpace dma_as;
+ qemu_irq irq_zdma_ch_imr;
+
+ struct {
+ uint32_t bus_width;
+ } cfg;
+
+ XlnxZDMAState state;
+ bool error;
+
+ XlnxZDMADescr dsc_src;
+ XlnxZDMADescr dsc_dst;
+
+ uint32_t regs[ZDMA_R_MAX];
+ RegisterInfo regs_info[ZDMA_R_MAX];
+
+ /* We don't model the common bufs. Must be at least 16 bytes
+ to model write only mode. */
+ uint8_t buf[2048];
+};
+
+#define TYPE_XLNX_ZDMA "xlnx.zdma"
+
+OBJECT_DECLARE_SIMPLE_TYPE(XlnxZDMA, XLNX_ZDMA)
+
+#endif /* XLNX_ZDMA_H */