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hv: vPCI: add assign/deassign PCI device HC APIs

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Add assign/deassign PCI device hypercall APIs to assign a PCI device from SOS to
post-launched VM or deassign a PCI device from post-launched VM to SOS. This patch
is prepared for spliting passthrough PCI device from DM to HV.
The old assign/deassign ptdev APIs will be discarded.

Tracked-On: #4371
Signed-off-by: Li Fei1 <fei1.li@intel.com>
This commit is contained in:
Li Fei1
2020-01-16 22:09:33 +08:00
committed by wenlingz
parent 2ca01206f3
commit fe3182ea05
8 changed files with 260 additions and 8 deletions
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35
hypervisor/include/public/acrn_hv_defs.h
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@@ -64,6 +64,8 @@
#define HC_VM_PCI_MSIX_REMAP BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x02UL)
#define HC_SET_PTDEV_INTR_INFO BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x03UL)
#define HC_RESET_PTDEV_INTR_INFO BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x04UL)
#define HC_ASSIGN_PCIDEV BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x05UL)
#define HC_DEASSIGN_PCIDEV BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x06UL)
/* DEBUG */
#define HC_ID_DBG_BASE 0x60UL
@@ -271,6 +273,39 @@ struct hc_ptdev_irq {
} is; /* irq source */
} __aligned(8);
/**
* @brief Info to assign or deassign PCI for a VM
*
* the parameter for HC_ASSIGN_PCIDEV or HC_DEASSIGN_PCIDEV hypercall
*/
struct acrn_assign_pcidev {
/** reversed for externed compatibility */
uint32_t rsvd1;
/** virtual BDF# of the pass-through PCI device */
uint16_t virt_bdf;
/** physical BDF# of the pass-through PCI device */
uint16_t phys_bdf;
/** the PCI Interrupt Line, initialized by ACRN-DM, which is RO and
* ideally not used for pass-through MSI/MSI-x devices.
*/
uint8_t intr_line;
/** the PCI Interrupt Pin, initialized by ACRN-DM, which is RO and
* ideally not used for pass-through MSI/MSI-x devices.
*/
uint8_t intr_pin;
/** the base address of the PCI BAR, initialized by ACRN-DM. */
uint32_t bar[6];
/** reserved for extension */
uint32_t rsvd2[6];
} __attribute__((aligned(8)));
/**
* Hypervisor api version info, return it for HC_GET_API_VERSION hypercall
*/