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HV: vpci: check if address is in VM BAR MMIO space

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When guest doing BAR re-programming, we should check whether
the base address of the BAR is valid.This patch does this check by:
1. whether the gpa is located in the responding MMIO window
2. whether the gpa is aligned with the BAR size

Tracked-On: #6011
Signed-off-by: Tao Yuhong <yuhong.tao@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Reviewed-by: Li Fei <fei1.li@intel.com>
This commit is contained in:
Tao Yuhong
2021-04-14 10:26:21 -04:00
committed by wenlingz
parent 7da53ce138
commit 5ecca6b256
4 changed files with 47 additions and 3 deletions
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4
hypervisor/include/dm/vacpi.h
View File

@@ -26,6 +26,10 @@
#define UOS_VIRT_PCI_MMCFG_BASE 0xE0000000UL
#define UOS_VIRT_PCI_MMCFG_START_BUS 0x0U
#define UOS_VIRT_PCI_MMCFG_END_BUS 0xFFU
#define UOS_VIRT_PCI_MEMBASE32 0x80000000UL /* 2GB */
#define UOS_VIRT_PCI_MEMLIMIT32 0xE0000000UL /* 3.5GB */
#define UOS_VIRT_PCI_MEMBASE64 0x4000000000UL /* 256GB */
#define UOS_VIRT_PCI_MEMLIMIT64 0x8000000000UL /* 512GB */
void build_vrsdp(struct acrn_vm *vm);

8
hypervisor/include/dm/vpci.h
View File

@@ -163,11 +163,19 @@ union pci_cfg_addr_reg {
} bits;
};
/* start address & end address of MMIO BAR */
struct pci_mmio_res {
uint64_t start;
uint64_t end;
};
struct acrn_vpci {
spinlock_t lock;
union pci_cfg_addr_reg addr;
struct pci_mmcfg_region pci_mmcfg;
uint32_t pci_vdev_cnt;
struct pci_mmio_res res32; /* 32-bit mmio start/end address */
struct pci_mmio_res res64; /* 64-bit mmio start/end address */
struct pci_vdev pci_vdevs[CONFIG_MAX_PCI_DEV_NUM];
struct hlist_head vdevs_hlist_heads [VDEV_LIST_HASHSIZE];
};