@@ -364,6 +364,7 @@ struct SpaprMachineState {
#define H_NOOP -63
#define H_UNSUPPORTED -67
#define H_OVERLAP -68
+#define H_STATE -75
#define H_UNSUPPORTED_FLAG -256
#define H_MULTI_THREADS_ACTIVE -9005
@@ -583,8 +584,10 @@ struct SpaprMachineState {
#define H_RPT_INVALIDATE 0x448
#define H_SCM_FLUSH 0x44C
#define H_WATCHDOG 0x45C
+#define H_GUEST_GET_CAPABILITIES 0x460
+#define H_GUEST_SET_CAPABILITIES 0x464
-#define MAX_HCALL_OPCODE H_WATCHDOG
+#define MAX_HCALL_OPCODE H_GUEST_SET_CAPABILITIES
/* The hcalls above are standardized in PAPR and implemented by pHyp
* as well.
@@ -1029,5 +1032,6 @@ void spapr_vof_client_dt_finalize(SpaprMachineState *spapr, void *fdt);
void spapr_watchdog_init(SpaprMachineState *spapr);
void spapr_register_nested_hv(void);
void spapr_unregister_nested_hv(void);
+void spapr_register_nested_papr(void);
#endif /* HW_SPAPR_H */
@@ -7,8 +7,20 @@ typedef struct SpaprMachineStateNested {
uint64_t ptcr;
uint8_t api;
#define NESTED_API_KVM_HV 1
+ bool capabilities_set;
+ uint32_t pvr_base;
} SpaprMachineStateNested;
+/* Nested PAPR API related macros */
+#define H_GUEST_CAPABILITIES_COPY_MEM 0x8000000000000000
+#define H_GUEST_CAPABILITIES_P9_MODE 0x4000000000000000
+#define H_GUEST_CAPABILITIES_P10_MODE 0x2000000000000000
+#define H_GUEST_CAP_VALID_MASK (H_GUEST_CAPABILITIES_P10_MODE | \
+ H_GUEST_CAPABILITIES_P9_MODE)
+#define H_GUEST_CAP_COPY_MEM_BMAP 0
+#define H_GUEST_CAP_P9_MODE_BMAP 1
+#define H_GUEST_CAP_P10_MODE_BMAP 2
+
/*
* Register state for entering a nested guest with H_ENTER_NESTED.
* New member must be added at the end.
@@ -7,10 +7,12 @@
#include "hw/ppc/spapr_cpu_core.h"
#include "hw/ppc/spapr_nested.h"
#include "mmu-book3s-v3.h"
+#include "cpu-models.h"
void spapr_nested_init(SpaprMachineState *spapr)
{
spapr->nested.api = 0;
+ spapr->nested.capabilities_set = false;
}
uint8_t spapr_nested_api(SpaprMachineState *spapr)
@@ -426,6 +428,92 @@ void spapr_exit_nested(PowerPCCPU *cpu, int excp)
}
}
+static target_ulong h_guest_get_capabilities(PowerPCCPU *cpu,
+ SpaprMachineState *spapr,
+ target_ulong opcode,
+ target_ulong *args)
+{
+ CPUPPCState *env = &cpu->env;
+ target_ulong flags = args[0];
+
+ if (flags) { /* don't handle any flags capabilities for now */
+ return H_PARAMETER;
+ }
+
+ /* P10 capabilities */
+ if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_10, 0,
+ spapr->max_compat_pvr)) {
+ env->gpr[4] |= H_GUEST_CAPABILITIES_P10_MODE;
+ }
+
+ /* P9 capabilities */
+ if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0,
+ spapr->max_compat_pvr)) {
+ env->gpr[4] |= H_GUEST_CAPABILITIES_P9_MODE;
+ }
+
+ return H_SUCCESS;
+}
+
+static target_ulong h_guest_set_capabilities(PowerPCCPU *cpu,
+ SpaprMachineState *spapr,
+ target_ulong opcode,
+ target_ulong *args)
+{
+ CPUPPCState *env = &cpu->env;
+ target_ulong flags = args[0];
+ target_ulong capabilities = args[1];
+ env->gpr[4] = 0;
+
+ if (flags) { /* don't handle any flags capabilities for now */
+ return H_PARAMETER;
+ }
+
+ if (capabilities & H_GUEST_CAPABILITIES_COPY_MEM) {
+ env->gpr[4] = 1;
+ return H_P2; /* isn't supported */
+ }
+
+ /* If there are no capabilities configured, set the R5 to the index of
+ * the first supported Power Processor Mode
+ */
+ if (!capabilities) {
+ env->gpr[4] = 1;
+
+ /* set R5 to the first supported Power Processor Mode */
+ if(ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_10, 0,
+ spapr->max_compat_pvr)) {
+ env->gpr[5] = H_GUEST_CAP_P10_MODE_BMAP;
+ }
+ else if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0,
+ spapr->max_compat_pvr)) {
+ env->gpr[5] = H_GUEST_CAP_P9_MODE_BMAP;
+ }
+
+ return H_P2;
+ }
+
+ /* If an invalid capability is set, R5 should contain the index of the
+ * invalid capability bit
+ */
+ if (capabilities & ~H_GUEST_CAP_VALID_MASK) {
+ env->gpr[4] = 1;
+
+ /* Set R5 to the index of the invalid capability */
+ env->gpr[5] = 63 - ctz64(capabilities);
+
+ return H_P2;
+ }
+
+ if (!spapr->nested.capabilities_set) {
+ spapr->nested.capabilities_set = true;
+ spapr->nested.pvr_base = env->spr[SPR_PVR];
+ return H_SUCCESS;
+ } else {
+ return H_STATE;
+ }
+}
+
void spapr_register_nested_hv(void)
{
spapr_register_hypercall(KVMPPC_H_SET_PARTITION_TABLE, h_set_ptbl);
@@ -441,6 +529,13 @@ void spapr_unregister_nested_hv(void)
spapr_unregister_hypercall(KVMPPC_H_TLB_INVALIDATE);
spapr_unregister_hypercall(KVMPPC_H_COPY_TOFROM_GUEST);
}
+
+void spapr_register_nested_papr(void)
+{
+ spapr_register_hypercall(H_GUEST_GET_CAPABILITIES, h_guest_get_capabilities);
+ spapr_register_hypercall(H_GUEST_SET_CAPABILITIES, h_guest_set_capabilities);
+}
+
#else
void spapr_exit_nested(PowerPCCPU *cpu, int excp)
{
@@ -462,4 +557,9 @@ bool spapr_get_pate_nested_hv(SpaprMachineState *spapr, PowerPCCPU *cpu,
{
return false;
}
+
+void spapr_register_nested_papr(void)
+{
+ /* DO NOTHING */
+}
#endif