[kvm-unit-tests v3 05/13] powerpc: Add ISA v3.1 (POWER10) support to SPR test

Nicholas Piggin
2023-03-27T12:45:57Z

This is a very basic detection that does not include all new SPRs.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
powerpc/sprs.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/powerpc/sprs.c b/powerpc/sprs.c
index ba4ddee..6ee6dba 100644
--- a/powerpc/sprs.c
+++ b/powerpc/sprs.c
@@ -117,6 +117,15 @@ static void set_sprs_book3s_300(uint64_t val)
mtspr(823, val); /* PSSCR */
}

+/* SPRs from Power ISA Version 3.1B */
+static void set_sprs_book3s_31(uint64_t val)
+{
+ set_sprs_book3s_207(val);
+ mtspr(48, val); /* PIDR */
+ /* 3.1 removes TIDR */
+ mtspr(823, val); /* PSSCR */
+}
+
static void set_sprs(uint64_t val)
{
uint32_t pvr = mfspr(287); /* Processor Version Register */
@@ -137,6 +146,9 @@ static void set_sprs(uint64_t val)
case 0x4e: /* POWER9 */
set_sprs_book3s_300(val);
break;
+ case 0x80: /* POWER10 */
+ set_sprs_book3s_31(val);
+ break;
default:
puts("Warning: Unknown processor version!\n");
}
@@ -220,6 +232,13 @@ static void get_sprs_book3s_300(uint64_t *v)
v[823] = mfspr(823); /* PSSCR */
}

+static void get_sprs_book3s_31(uint64_t *v)
+{
+ get_sprs_book3s_207(v);
+ v[48] = mfspr(48); /* PIDR */
+ v[823] = mfspr(823); /* PSSCR */
+}
+
static void get_sprs(uint64_t *v)
{
uint32_t pvr = mfspr(287); /* Processor Version Register */
@@ -240,6 +259,9 @@ static void get_sprs(uint64_t *v)
case 0x4e: /* POWER9 */
get_sprs_book3s_300(v);
break;
+ case 0x80: /* POWER10 */
+ get_sprs_book3s_31(v);
+ break;
}
}

--
2.37.2