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HV: parse default pci mmcfg base

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The default PCI mmcfg base is stored in ACPI MCFG table, when
CONFIG_ACPI_PARSE_ENABLED is set, acpi_fixup() function will
parse and fix up the platform mmcfg base in ACRN boot stage;
when it is not set, platform mmcfg base will be initialized to
DEFAULT_PCI_MMCFG_BASE which generated by acrn-config tool;

Please note we will not support platform which has multiple PCI
segment groups.

Tracked-On: #4157

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Victor Sun
2019-11-27 13:39:52 +08:00
committed by wenlingz
parent 80a7281f1e
commit 15da33d8af
8 changed files with 72 additions and 9 deletions
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5
hypervisor/include/hw/pci.h
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@@ -233,6 +233,11 @@ static inline bool bdf_is_equal(union pci_bdf a, union pci_bdf b)
return (a.value == b.value);
}
#ifdef CONFIG_ACPI_PARSE_ENABLED
void set_mmcfg_base(uint64_t mmcfg_base);
#endif
uint64_t get_mmcfg_base(void);
uint32_t pci_pdev_read_cfg(union pci_bdf bdf, uint32_t offset, uint32_t bytes);
void pci_pdev_write_cfg(union pci_bdf bdf, uint32_t offset, uint32_t bytes, uint32_t val);
void enable_disable_pci_intx(union pci_bdf bdf, bool enable);