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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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14
hypervisor/hw/pci.c
View File

@@ -41,13 +41,27 @@
#include <vtd.h>
#include <bits.h>
#include <board.h>
#include <platform_acpi_info.h>
static spinlock_t pci_device_lock;
static uint32_t num_pci_pdev;
static struct pci_pdev pci_pdev_array[CONFIG_MAX_PCI_DEV_NUM];
static uint64_t pci_mmcfg_base = DEFAULT_PCI_MMCFG_BASE;
static void init_pdev(uint16_t pbdf, uint32_t drhd_index);
#ifdef CONFIG_ACPI_PARSE_ENABLED
void set_mmcfg_base(uint64_t mmcfg_base)
{
pci_mmcfg_base = mmcfg_base;
}
#endif
uint64_t get_mmcfg_base(void)
{
return pci_mmcfg_base;
}
/* @brief: Find the DRHD index corresponding to a PCI device
* Runs through the pci_pdev_array and returns the value in drhd_idx
* member from pdev structure that matches matches B:D.F