spapr: nested: Add Power11 capability support for Nested PAPR guests in TCG L0

The Power11 architected and raw mode support in Linux was merged via [1]
and the corresponding support in QEMU is waiting to be added by [2]
which in V6 currently.

Add the Power11 capabilities and the required handling in TCG L0
implementation of the "Nested PAPR API".

Note: This patch is based on [2].

[1] https://lore.kernel.org/all/20240221044623.1598642-1-mpe@ellerman.id.au/
[2] https://lore.kernel.org/all/20240731055022.696051-1-adityag@linux.ibm.com/

Signed-off-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

hw/ppc/spapr_nested.c

@@ -771,6 +771,7 @@ static void copy_logical_pvr(void *a, void *b, bool set)
 
     if (*pvr_logical_ptr) {
         switch (*pvr_logical_ptr) {
+        case CPU_POWERPC_LOGICAL_3_10_P11:
         case CPU_POWERPC_LOGICAL_3_10:
             pcr = PCR_COMPAT_3_10 | PCR_COMPAT_3_00;
             break;
@@ -1185,6 +1186,12 @@ static target_ulong h_guest_get_capabilities(PowerPCCPU *cpu,
         return H_PARAMETER;
     }
 
+    /* P11 capabilities */
+    if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_10_P11, 0,
+        spapr->max_compat_pvr)) {
+        env->gpr[4] |= H_GUEST_CAPABILITIES_P11_MODE;
+    }
+
     /* P10 capabilities */
     if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_10, 0,
         spapr->max_compat_pvr)) {
@@ -1227,7 +1234,10 @@ static target_ulong h_guest_set_capabilities(PowerPCCPU *cpu,
         env->gpr[4] = 1;
 
         /* set R5 to the first supported Power Processor Mode */
-        if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_10, 0,
+        if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_10_P11, 0,
+                             spapr->max_compat_pvr)) {
+            env->gpr[5] = H_GUEST_CAP_P11_MODE_BMAP;
+        } else 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,

include/hw/ppc/spapr_nested.h

@@ -211,11 +211,14 @@ typedef struct SpaprMachineStateNestedGuest {
 #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 | \
+#define H_GUEST_CAPABILITIES_P11_MODE 0x1000000000000000
+#define H_GUEST_CAP_VALID_MASK        (H_GUEST_CAPABILITIES_P11_MODE | \
+                                       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
+#define H_GUEST_CAP_P11_MODE_BMAP     3
 #define PAPR_NESTED_GUEST_MAX         4096
 #define H_GUEST_DELETE_ALL_FLAG       0x8000000000000000ULL
 #define PAPR_NESTED_GUEST_VCPU_MAX    2048