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authorMichael S. Tsirkin <mst@redhat.com>2012-12-12 13:32:14 +0200
committerMichael S. Tsirkin <mst@redhat.com>2012-12-17 13:02:17 +0200
commit315a1350c4a386065a73aad2ded1a11d77bf7771 (patch)
treeaa3fb4aef47d33387386df46eb6cd1c47b35c197 /hw/pcie_host.c
parentca818cfbfd77e02ffac338866568ac07f6f5fd7d (diff)
pci: move pci core code to hw/pci
Move files and modify makefiles to pick them at the new location. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/pcie_host.c')
-rw-r--r--hw/pcie_host.c161
1 files changed, 0 insertions, 161 deletions
diff --git a/hw/pcie_host.c b/hw/pcie_host.c
deleted file mode 100644
index c257fb43ca..0000000000
--- a/hw/pcie_host.c
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * pcie_host.c
- * utility functions for pci express host bridge.
- *
- * 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/>.
- */
-
-#include "hw.h"
-#include "pci.h"
-#include "pcie_host.h"
-#include "exec-memory.h"
-
-/*
- * PCI express mmcfig 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)
-
-
-/* a helper function to get a PCIDevice for a given mmconfig address */
-static inline PCIDevice *pcie_dev_find_by_mmcfg_addr(PCIBus *s,
- uint32_t mmcfg_addr)
-{
- return pci_find_device(s, PCIE_MMCFG_BUS(mmcfg_addr),
- PCIE_MMCFG_DEVFN(mmcfg_addr));
-}
-
-static void pcie_mmcfg_data_write(void *opaque, hwaddr mmcfg_addr,
- uint64_t val, unsigned len)
-{
- PCIExpressHost *e = opaque;
- PCIBus *s = e->pci.bus;
- PCIDevice *pci_dev = pcie_dev_find_by_mmcfg_addr(s, mmcfg_addr);
- uint32_t addr;
- uint32_t limit;
-
- if (!pci_dev) {
- return;
- }
- addr = PCIE_MMCFG_CONFOFFSET(mmcfg_addr);
- limit = pci_config_size(pci_dev);
- if (limit <= addr) {
- /* conventional pci device can be behind pcie-to-pci bridge.
- 256 <= addr < 4K has no effects. */
- return;
- }
- pci_host_config_write_common(pci_dev, addr, limit, val, len);
-}
-
-static uint64_t pcie_mmcfg_data_read(void *opaque,
- hwaddr mmcfg_addr,
- unsigned len)
-{
- PCIExpressHost *e = opaque;
- PCIBus *s = e->pci.bus;
- PCIDevice *pci_dev = pcie_dev_find_by_mmcfg_addr(s, mmcfg_addr);
- uint32_t addr;
- uint32_t limit;
-
- if (!pci_dev) {
- return ~0x0;
- }
- addr = PCIE_MMCFG_CONFOFFSET(mmcfg_addr);
- limit = pci_config_size(pci_dev);
- if (limit <= addr) {
- /* conventional pci device can be behind pcie-to-pci bridge.
- 256 <= addr < 4K has no effects. */
- return ~0x0;
- }
- return pci_host_config_read_common(pci_dev, addr, limit, len);
-}
-
-static const MemoryRegionOps pcie_mmcfg_ops = {
- .read = pcie_mmcfg_data_read,
- .write = pcie_mmcfg_data_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-/* pcie_host::base_addr == PCIE_BASE_ADDR_UNMAPPED when it isn't mapped. */
-#define PCIE_BASE_ADDR_UNMAPPED ((hwaddr)-1ULL)
-
-int pcie_host_init(PCIExpressHost *e)
-{
- e->base_addr = PCIE_BASE_ADDR_UNMAPPED;
-
- return 0;
-}
-
-void pcie_host_mmcfg_unmap(PCIExpressHost *e)
-{
- if (e->base_addr != PCIE_BASE_ADDR_UNMAPPED) {
- memory_region_del_subregion(get_system_memory(), &e->mmio);
- memory_region_destroy(&e->mmio);
- e->base_addr = PCIE_BASE_ADDR_UNMAPPED;
- }
-}
-
-void pcie_host_mmcfg_map(PCIExpressHost *e, hwaddr addr,
- uint32_t size)
-{
- assert(!(size & (size - 1))); /* power of 2 */
- assert(size >= PCIE_MMCFG_SIZE_MIN);
- assert(size <= PCIE_MMCFG_SIZE_MAX);
- e->size = size;
- memory_region_init_io(&e->mmio, &pcie_mmcfg_ops, e, "pcie-mmcfg", e->size);
- e->base_addr = addr;
- memory_region_add_subregion(get_system_memory(), e->base_addr, &e->mmio);
-}
-
-void pcie_host_mmcfg_update(PCIExpressHost *e,
- int enable,
- hwaddr addr,
- uint32_t size)
-{
- pcie_host_mmcfg_unmap(e);
- if (enable) {
- pcie_host_mmcfg_map(e, addr, size);
- }
-}
-
-static const TypeInfo pcie_host_type_info = {
- .name = TYPE_PCIE_HOST_BRIDGE,
- .parent = TYPE_PCI_HOST_BRIDGE,
- .abstract = true,
- .instance_size = sizeof(PCIExpressHost),
-};
-
-static void pcie_host_register_types(void)
-{
- type_register_static(&pcie_host_type_info);
-}
-
-type_init(pcie_host_register_types)