diff options
Diffstat (limited to 'include/hw/pci/pcie_host.h')
-rw-r--r-- | include/hw/pci/pcie_host.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/include/hw/pci/pcie_host.h b/include/hw/pci/pcie_host.h new file mode 100644 index 000000000..076457b27 --- /dev/null +++ b/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" +#include "qom/object.h" + +#define TYPE_PCIE_HOST_BRIDGE "pcie-host-bridge" +OBJECT_DECLARE_SIMPLE_TYPE(PCIExpressHost, 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 << 29) +#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 */ |