AMD EPYC family 0x1A and Model 0x0-0xF are having different
mailbox message ID offset compared to previous
platforms. In case of ACPI based BIOS, this information will be read
from ACPI table, for non-ACPI BIOS, this needs to be #defined.
Signed-off-by: Suma Hegde <suma.hegde@xxxxxxx>
Signed-off-by: Naveen Krishna Chatradhi <nchatrad@xxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
Changes since v4:
None
Changes since v3:
1. Correct the spelling mistake of "transitional" word
2. Move sema_init() statement
Changes since v2:
1. Change "non ACPI" to "non-ACPI"
2. Add "Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>"
Changes since v1:
Add "Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>"
drivers/platform/x86/amd/hsmp.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/amd/hsmp.c b/drivers/platform/x86/amd/hsmp.c
index 723a92439438..05255102e0a0 100644
--- a/drivers/platform/x86/amd/hsmp.c
+++ b/drivers/platform/x86/amd/hsmp.c
@@ -44,6 +44,7 @@
*/
#define SMN_HSMP_BASE 0x3B00000
#define SMN_HSMP_MSG_ID 0x0010534
+#define SMN_HSMP_MSG_ID_F1A_M0H 0x0010934
#define SMN_HSMP_MSG_RESP 0x0010980
#define SMN_HSMP_MSG_DATA 0x00109E0
@@ -736,6 +737,15 @@ static int hsmp_cache_proto_ver(u16 sock_ind)
return ret;
}
+static inline bool is_f1a_m0h(void)
+{
+ if (boot_cpu_data.x86 == 0x1A &&
+ (boot_cpu_data.x86_model >= 0x00 && boot_cpu_data.x86_model <= 0x0F))
+ return true;
+
+ return false;
+}
+
static int init_platform_device(struct device *dev)
{
struct hsmp_socket *sock;
@@ -749,7 +759,16 @@ static int init_platform_device(struct device *dev)
sock->sock_ind = i;
sock->dev = dev;
sock->mbinfo.base_addr = SMN_HSMP_BASE;
- sock->mbinfo.msg_id_off = SMN_HSMP_MSG_ID;
+
+ /*
+ * This is a transitional change from non-ACPI to ACPI, only
+ * family 0x1A, model 0x00 platform is supported for both ACPI and non-ACPI.
+ */
+ if (is_f1a_m0h())
+ sock->mbinfo.msg_id_off = SMN_HSMP_MSG_ID_F1A_M0H;
+ else
+ sock->mbinfo.msg_id_off = SMN_HSMP_MSG_ID;
+
sock->mbinfo.msg_resp_off = SMN_HSMP_MSG_RESP;
sock->mbinfo.msg_arg_off = SMN_HSMP_MSG_DATA;
sema_init(&sock->hsmp_sem, 1);
--
2.25.1
