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FROMLIST: gunyah: rsc_mgr: Add RPC to set VM boot context

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The initial context of a the primary vCPU can be initialized by
performing RM RPC calls.

Bug: 338347082
Link: https://lore.kernel.org/all/20240222-gunyah-v17-29-1e9da6763d38@quicinc.com/
Change-Id: I4148c08ad2e682e0ae453a801223ce6f78bf7e29
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
Signed-off-by: Elliot Berman <elliot.berman@oss.qualcomm.com>
This commit is contained in:
Elliot Berman
2024-02-22 15:16:52 -08:00
committed by Treehugger Robot
parent b7e97995a6
commit ae23da130e
2 changed files with 35 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/virt/gunyah/rsc_mgr.h
+2
View File
@@ -84,6 +84,8 @@ int gunyah_rm_vm_configure(struct gunyah_rm *rm, u16 vmid,
u32 mem_handle, u64 image_offset, u64 image_size,
u64 dtb_offset, u64 dtb_size);
int gunyah_rm_vm_init(struct gunyah_rm *rm, u16 vmid);
int gunyah_rm_vm_set_boot_context(struct gunyah_rm *rm, u16 vmid, u8 reg_set,
u8 reg_index, u64 value);
struct gunyah_rm_hyp_resource {
u8 type;
drivers/virt/gunyah/rsc_mgr_rpc.c
+33
View File
@@ -24,6 +24,7 @@
#define GUNYAH_RM_RPC_VM_INIT 0x5600000B
#define GUNYAH_RM_RPC_VM_GET_HYP_RESOURCES 0x56000020
#define GUNYAH_RM_RPC_VM_GET_VMID 0x56000024
#define GUNYAH_RM_RPC_VM_SET_BOOT_CONTEXT 0x56000031
#define GUNYAH_RM_RPC_VM_SET_DEMAND_PAGING 0x56000033
#define GUNYAH_RM_RPC_VM_SET_ADDRESS_LAYOUT 0x56000034
/* clang-format on */
@@ -105,6 +106,15 @@ struct gunyah_rm_vm_config_image_req {
__le64 dtb_size;
} __packed;
/* Call: VM_SET_BOOT_CONTEXT */
struct gunyah_rm_vm_set_boot_context_req {
__le16 vmid;
u8 reg_set;
u8 reg_index;
__le32 _padding;
__le64 value;
} __packed;
/* Call: VM_SET_DEMAND_PAGING */
struct gunyah_rm_vm_set_demand_paging_req {
__le16 vmid;
@@ -447,6 +457,29 @@ int gunyah_rm_vm_init(struct gunyah_rm *rm, u16 vmid)
}
ALLOW_ERROR_INJECTION(gunyah_rm_vm_init, ERRNO);
/**
* gunyah_rm_vm_set_boot_context() - set the initial boot context of the primary vCPU
* @rm: Handle to a Gunyah resource manager
* @vmid: VM identifier
* @reg_set: See &enum gunyah_vm_boot_context_reg
* @reg_index: Which register to set; must be 0 for REG_SET_PC
* @value: Value to set in the register
*/
int gunyah_rm_vm_set_boot_context(struct gunyah_rm *rm, u16 vmid, u8 reg_set,
u8 reg_index, u64 value)
{
struct gunyah_rm_vm_set_boot_context_req req_payload = {
.vmid = cpu_to_le16(vmid),
.reg_set = reg_set,
.reg_index = reg_index,
.value = cpu_to_le64(value),
};
return gunyah_rm_call(rm, GUNYAH_RM_RPC_VM_SET_BOOT_CONTEXT,
&req_payload, sizeof(req_payload), NULL, NULL);
}
ALLOW_ERROR_INJECTION(gunyah_rm_vm_set_boot_context, ERRNO);
/**
* gunyah_rm_get_hyp_resources() - Retrieve hypervisor resources (capabilities) associated with a VM
* @rm: Handle to a Gunyah resource manager