diff mbox series

[kvm-unit-tests,4/7] powerpc: Add ISA v3.1 (POWER10) support to SPR test

Message ID 20230317123614.3687163-4-npiggin@gmail.com (mailing list archive)
State Handled Elsewhere
Headers show
Series [kvm-unit-tests,1/7] MAINTAINERS: Update powerpc list | expand

Commit Message

Nicholas Piggin March 17, 2023, 12:36 p.m. UTC 
This is a very basic detection that does not include all new SPRs.

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

Comments

Thomas Huth March 23, 2023, 11:55 a.m. UTC | #1 
On 17/03/2023 13.36, Nicholas Piggin wrote:
> This is a very basic detection that does not include all new SPRs.
> 
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
>   powerpc/sprs.c | 22 ++++++++++++++++++++++
>   1 file changed, 22 insertions(+)

Reviewed-by: Thomas Huth <thuth@redhat.com>
diff mbox series

Patch

diff --git a/powerpc/sprs.c b/powerpc/sprs.c
index 161a6ba..45f77a5 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;
 	}
 }