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

1 files changed, 97 insertions, 0 deletions

diff --git a/include/hw/misc/xlnx-versal-xramc.h b/include/hw/misc/xlnx-versal-xramc.h
new file mode 100644
index 000000000..d3d186267
--- /dev/null
+++ b/include/hw/misc/xlnx-versal-xramc.h
@@ -0,0 +1,97 @@
+/*
+ * QEMU model of the Xilinx XRAM Controller.
+ *
+ * Copyright (c) 2021 Xilinx Inc.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ * Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com>
+ */
+
+#ifndef XLNX_VERSAL_XRAMC_H
+#define XLNX_VERSAL_XRAMC_H
+
+#include "hw/sysbus.h"
+#include "hw/register.h"
+
+#define TYPE_XLNX_XRAM_CTRL "xlnx.versal-xramc"
+
+#define XLNX_XRAM_CTRL(obj) \
+     OBJECT_CHECK(XlnxXramCtrl, (obj), TYPE_XLNX_XRAM_CTRL)
+
+REG32(XRAM_ERR_CTRL, 0x0)
+    FIELD(XRAM_ERR_CTRL, UE_RES, 3, 1)
+    FIELD(XRAM_ERR_CTRL, PWR_ERR_RES, 2, 1)
+    FIELD(XRAM_ERR_CTRL, PZ_ERR_RES, 1, 1)
+    FIELD(XRAM_ERR_CTRL, APB_ERR_RES, 0, 1)
+REG32(XRAM_ISR, 0x4)
+    FIELD(XRAM_ISR, INV_APB, 0, 1)
+REG32(XRAM_IMR, 0x8)
+    FIELD(XRAM_IMR, INV_APB, 0, 1)
+REG32(XRAM_IEN, 0xc)
+    FIELD(XRAM_IEN, INV_APB, 0, 1)
+REG32(XRAM_IDS, 0x10)
+    FIELD(XRAM_IDS, INV_APB, 0, 1)
+REG32(XRAM_ECC_CNTL, 0x14)
+    FIELD(XRAM_ECC_CNTL, FI_MODE, 2, 1)
+    FIELD(XRAM_ECC_CNTL, DET_ONLY, 1, 1)
+    FIELD(XRAM_ECC_CNTL, ECC_ON_OFF, 0, 1)
+REG32(XRAM_CLR_EXE, 0x18)
+    FIELD(XRAM_CLR_EXE, MON_7, 7, 1)
+    FIELD(XRAM_CLR_EXE, MON_6, 6, 1)
+    FIELD(XRAM_CLR_EXE, MON_5, 5, 1)
+    FIELD(XRAM_CLR_EXE, MON_4, 4, 1)
+    FIELD(XRAM_CLR_EXE, MON_3, 3, 1)
+    FIELD(XRAM_CLR_EXE, MON_2, 2, 1)
+    FIELD(XRAM_CLR_EXE, MON_1, 1, 1)
+    FIELD(XRAM_CLR_EXE, MON_0, 0, 1)
+REG32(XRAM_CE_FFA, 0x1c)
+    FIELD(XRAM_CE_FFA, ADDR, 0, 20)
+REG32(XRAM_CE_FFD0, 0x20)
+REG32(XRAM_CE_FFD1, 0x24)
+REG32(XRAM_CE_FFD2, 0x28)
+REG32(XRAM_CE_FFD3, 0x2c)
+REG32(XRAM_CE_FFE, 0x30)
+    FIELD(XRAM_CE_FFE, SYNDROME, 0, 16)
+REG32(XRAM_UE_FFA, 0x34)
+    FIELD(XRAM_UE_FFA, ADDR, 0, 20)
+REG32(XRAM_UE_FFD0, 0x38)
+REG32(XRAM_UE_FFD1, 0x3c)
+REG32(XRAM_UE_FFD2, 0x40)
+REG32(XRAM_UE_FFD3, 0x44)
+REG32(XRAM_UE_FFE, 0x48)
+    FIELD(XRAM_UE_FFE, SYNDROME, 0, 16)
+REG32(XRAM_FI_D0, 0x4c)
+REG32(XRAM_FI_D1, 0x50)
+REG32(XRAM_FI_D2, 0x54)
+REG32(XRAM_FI_D3, 0x58)
+REG32(XRAM_FI_SY, 0x5c)
+    FIELD(XRAM_FI_SY, DATA, 0, 16)
+REG32(XRAM_RMW_UE_FFA, 0x70)
+    FIELD(XRAM_RMW_UE_FFA, ADDR, 0, 20)
+REG32(XRAM_FI_CNTR, 0x74)
+    FIELD(XRAM_FI_CNTR, COUNT, 0, 24)
+REG32(XRAM_IMP, 0x80)
+    FIELD(XRAM_IMP, SIZE, 0, 4)
+REG32(XRAM_PRDY_DBG, 0x84)
+    FIELD(XRAM_PRDY_DBG, ISLAND3, 12, 4)
+    FIELD(XRAM_PRDY_DBG, ISLAND2, 8, 4)
+    FIELD(XRAM_PRDY_DBG, ISLAND1, 4, 4)
+    FIELD(XRAM_PRDY_DBG, ISLAND0, 0, 4)
+REG32(XRAM_SAFETY_CHK, 0xff8)
+
+#define XRAM_CTRL_R_MAX (R_XRAM_SAFETY_CHK + 1)
+
+typedef struct XlnxXramCtrl {
+    SysBusDevice parent_obj;
+    MemoryRegion ram;
+    qemu_irq irq;
+
+    struct {
+        uint64_t size;
+        unsigned int encoded_size;
+    } cfg;
+
+    RegisterInfoArray *reg_array;
+    uint32_t regs[XRAM_CTRL_R_MAX];
+    RegisterInfo regs_info[XRAM_CTRL_R_MAX];
+} XlnxXramCtrl;
+#endif