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Subject[PATCH v2 29/31] EDAC/amd64: Define helper function to get interleave address select bit
Date
...this will be expanded for future Data Fabric versions.

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
---
Link:
https://lkml.kernel.org/r/20210507190140.18854-1-Yazen.Ghannam@amd.com

v1->v2:
* New in v2.

drivers/edac/amd64_edac.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 7ba6aa97e80d..aa8b8d0b319d 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -1116,6 +1116,7 @@ struct data_fabric_ops {
u16 (*get_component_id_mask)(struct addr_ctx *ctx);
u8 (*get_die_id_shift)(struct addr_ctx *ctx);
u8 (*get_socket_id_shift)(struct addr_ctx *ctx);
+ u8 (*get_intlv_addr_sel)(struct addr_ctx *ctx);
int (*get_intlv_mode)(struct addr_ctx *ctx);
int (*get_cs_fabric_id)(struct addr_ctx *ctx);
int (*get_masks)(struct addr_ctx *ctx);
@@ -1192,6 +1193,11 @@ static int get_intlv_mode_df2(struct addr_ctx *ctx)
return 0;
}

+static u8 get_intlv_addr_sel_df2(struct addr_ctx *ctx)
+{
+ return (ctx->reg_base_addr >> 8) & 0x7;
+}
+
static void get_intlv_num_dies_df2(struct addr_ctx *ctx)
{
ctx->intlv_num_dies = (ctx->reg_limit_addr >> 10) & 0x3;
@@ -1245,6 +1251,7 @@ static u16 get_component_id_mask_df2(struct addr_ctx *ctx)
struct data_fabric_ops df2_ops = {
.get_hi_addr_offset = &get_hi_addr_offset_df2,
.get_intlv_mode = &get_intlv_mode_df2,
+ .get_intlv_addr_sel = &get_intlv_addr_sel_df2,
.get_intlv_num_dies = &get_intlv_num_dies_df2,
.get_intlv_num_sockets = &get_intlv_num_sockets_df2,
.get_cs_fabric_id = &get_cs_fabric_id_df2,
@@ -1323,7 +1330,7 @@ static int get_dram_addr_map(struct addr_ctx *ctx)

static int get_intlv_addr_bit(struct addr_ctx *ctx)
{
- u8 intlv_addr_sel = (ctx->reg_base_addr >> 8) & 0x7;
+ u8 intlv_addr_sel = df_ops->get_intlv_addr_sel(ctx);

/* {0, 1, 2, 3} map to address bits {8, 9, 10, 11} respectively */
if (intlv_addr_sel > 3) {
--
2.25.1
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