1 files changed, 81 insertions, 0 deletions
diff --git a/src/include/hw/pci/pcie_host.h b/src/include/hw/pci/pcie_host.h
new file mode 100644
index 0000000..4d23c80
--- /dev/null
+++ b/src/include/hw/pci/pcie_host.h
@@ -0,0 +1,81 @@
+/*
+ * pcie_host.h
+ *
+ * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * 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 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef PCIE_HOST_H
+#define PCIE_HOST_H
+
+#include "hw/pci/pci_host.h"
+#include "exec/memory.h"
+
+#define TYPE_PCIE_HOST_BRIDGE "pcie-host-bridge"
+#define PCIE_HOST_BRIDGE(obj) \
+    OBJECT_CHECK(PCIExpressHost, (obj), TYPE_PCIE_HOST_BRIDGE)
+
+#define PCIE_HOST_MCFG_BASE "MCFG"
+#define PCIE_HOST_MCFG_SIZE "mcfg_size"
+
+/* pcie_host::base_addr == PCIE_BASE_ADDR_UNMAPPED when it isn't mapped. */
+#define PCIE_BASE_ADDR_UNMAPPED  ((hwaddr)-1ULL)
+
+struct PCIExpressHost {
+    PCIHostState pci;
+
+    /* express part */
+
+    /* base address where MMCONFIG area is mapped. */
+    hwaddr  base_addr;
+
+    /* the size of MMCONFIG area. It's host bridge dependent */
+    hwaddr  size;
+
+    /* MMCONFIG mmio area */
+    MemoryRegion mmio;
+};
+
+void pcie_host_mmcfg_unmap(PCIExpressHost *e);
+void pcie_host_mmcfg_init(PCIExpressHost *e, uint32_t size);
+void pcie_host_mmcfg_map(PCIExpressHost *e, hwaddr addr, uint32_t size);
+void pcie_host_mmcfg_update(PCIExpressHost *e,
+                            int enable,
+                            hwaddr addr,
+                            uint32_t size);
+
+/*
+ * PCI express ECAM (Enhanced Configuration Address Mapping) format.
+ * AKA mmcfg address
+ * bit 20 - 28: bus number
+ * bit 15 - 19: device number
+ * bit 12 - 14: function number
+ * bit  0 - 11: offset in configuration space of a given device
+ */
+#define PCIE_MMCFG_SIZE_MAX             (1ULL << 28)
+#define PCIE_MMCFG_SIZE_MIN             (1ULL << 20)
+#define PCIE_MMCFG_BUS_BIT              20
+#define PCIE_MMCFG_BUS_MASK             0x1ff
+#define PCIE_MMCFG_DEVFN_BIT            12
+#define PCIE_MMCFG_DEVFN_MASK           0xff
+#define PCIE_MMCFG_CONFOFFSET_MASK      0xfff
+#define PCIE_MMCFG_BUS(addr)            (((addr) >> PCIE_MMCFG_BUS_BIT) & \
+                                         PCIE_MMCFG_BUS_MASK)
+#define PCIE_MMCFG_DEVFN(addr)          (((addr) >> PCIE_MMCFG_DEVFN_BIT) & \
+                                         PCIE_MMCFG_DEVFN_MASK)
+#define PCIE_MMCFG_CONFOFFSET(addr)     ((addr) & PCIE_MMCFG_CONFOFFSET_MASK)
+
+#endif /* PCIE_HOST_H */