From: Yazen Ghannam <yazen.ghannam@amd.com>
To: <linux-edac@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <bp@alien8.de>,
<mchehab@kernel.org>, <tony.luck@intel.com>,
<james.morse@arm.com>, <rric@kernel.org>,
<Smita.KoralahalliChannabasappa@amd.com>,
Yazen Ghannam <yazen.ghannam@amd.com>
Subject: [PATCH v4 20/24] EDAC/amd64: Define function to find shift and mask values
Date: Thu, 27 Jan 2022 20:41:11 +0000 [thread overview]
Message-ID: <20220127204115.384161-21-yazen.ghannam@amd.com> (raw)
In-Reply-To: <20220127204115.384161-1-yazen.ghannam@amd.com>
Move code to find the shift and mask values used in die and socket
interleaving into separate helper functions. These will be expanded for
future DF versions. Make the die_id_mask and socket_id_mask values u16
type to accommodate larger bitfields in future DF versions.
Also, move reading of the System Fabric ID Mask register into
get_masks(). This will be expanded for future DF versions.
Call get_masks() early since future DF versions may need these values
early.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
---
Link:
https://lore.kernel.org/r/20211028175728.121452-26-yazen.ghannam@amd.com
v3->v4:
* Remove leading whitespace in function pointers.
* Include pr_debug() in failure.
v2->v3:
* Was patch 26 in v2.
* Remove early code related to "df_ops".
v1->v2:
* Moved from arch/x86 to EDAC.
* Added functions to data_fabric_ops.
drivers/edac/amd64_edac.c | 59 ++++++++++++++++++++++++++++++---------
1 file changed, 46 insertions(+), 13 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 7891c2e93d53..ac7919010063 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -1073,7 +1073,10 @@ struct addr_ctx {
u32 reg_dram_offset;
u32 reg_base_addr;
u32 reg_limit_addr;
+ u32 reg_fab_id_mask0;
u16 cs_fabric_id;
+ u16 die_id_mask;
+ u16 socket_id_mask;
u16 nid;
u8 inst_id;
u8 map_num;
@@ -1089,8 +1092,11 @@ struct addr_ctx {
struct data_fabric_ops {
u64 (*get_hi_addr_offset)(struct addr_ctx *ctx);
+ u8 (*get_die_id_shift)(struct addr_ctx *ctx);
+ u8 (*get_socket_id_shift)(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);
void (*get_intlv_num_dies)(struct addr_ctx *ctx);
void (*get_intlv_num_sockets)(struct addr_ctx *ctx);
};
@@ -1185,12 +1191,37 @@ static int get_cs_fabric_id_df2(struct addr_ctx *ctx)
return 0;
}
+static int get_masks_df2(struct addr_ctx *ctx)
+{
+ /* Read D18F1x208 (SystemFabricIdMask). */
+ if (df_indirect_read_broadcast(ctx->nid, 1, 0x208, &ctx->reg_fab_id_mask0))
+ return -EINVAL;
+
+ ctx->die_id_mask = (ctx->reg_fab_id_mask0 >> 8) & 0xFF;
+ ctx->socket_id_mask = (ctx->reg_fab_id_mask0 >> 16) & 0xFF;
+
+ return 0;
+}
+
+static u8 get_die_id_shift_df2(struct addr_ctx *ctx)
+{
+ return (ctx->reg_fab_id_mask0 >> 24) & 0xF;
+}
+
+static u8 get_socket_id_shift_df2(struct addr_ctx *ctx)
+{
+ return (ctx->reg_fab_id_mask0 >> 28) & 0xF;
+}
+
struct data_fabric_ops df2_ops = {
.get_hi_addr_offset = get_hi_addr_offset_df2,
.get_intlv_mode = get_intlv_mode_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,
+ .get_masks = get_masks_df2,
+ .get_die_id_shift = get_die_id_shift_df2,
+ .get_socket_id_shift = get_socket_id_shift_df2,
};
struct data_fabric_ops *df_ops;
@@ -1281,7 +1312,6 @@ static void get_intlv_num_chan(struct addr_ctx *ctx)
static int calculate_cs_id(struct addr_ctx *ctx)
{
- u8 die_id_shift, die_id_mask, socket_id_shift, socket_id_mask;
u8 die_id_bit = 0, sock_id_bit, cs_mask = 0;
/* If interleaved over more than 1 channel: */
@@ -1291,28 +1321,26 @@ static int calculate_cs_id(struct addr_ctx *ctx)
ctx->cs_id = ctx->cs_fabric_id & cs_mask;
}
- sock_id_bit = die_id_bit;
+ /* Return early if no die interleaving and no socket interleaving. */
+ if (!(ctx->intlv_num_dies || ctx->intlv_num_sockets))
+ return 0;
- /* Read D18F1x208 (SystemFabricIdMask). */
- if (ctx->intlv_num_dies || ctx->intlv_num_sockets)
- if (df_indirect_read_broadcast(ctx->nid, 1, 0x208, &ctx->tmp))
- return -EINVAL;
+ sock_id_bit = die_id_bit;
/* If interleaved over more than 1 die: */
if (ctx->intlv_num_dies) {
- sock_id_bit = die_id_bit + ctx->intlv_num_dies;
- die_id_shift = (ctx->tmp >> 24) & 0xF;
- die_id_mask = (ctx->tmp >> 8) & 0xFF;
+ u8 die_id_shift = df_ops->get_die_id_shift(ctx);
- ctx->cs_id |= ((ctx->cs_fabric_id & die_id_mask) >> die_id_shift) << die_id_bit;
+ sock_id_bit = die_id_bit + ctx->intlv_num_dies;
+ ctx->cs_id |= ((ctx->cs_fabric_id & ctx->die_id_mask)
+ >> die_id_shift) << die_id_bit;
}
/* If interleaved over more than 1 socket: */
if (ctx->intlv_num_sockets) {
- socket_id_shift = (ctx->tmp >> 28) & 0xF;
- socket_id_mask = (ctx->tmp >> 16) & 0xFF;
+ u8 socket_id_shift = df_ops->get_socket_id_shift(ctx);
- ctx->cs_id |= ((ctx->cs_fabric_id & socket_id_mask)
+ ctx->cs_id |= ((ctx->cs_fabric_id & ctx->socket_id_mask)
>> socket_id_shift) << sock_id_bit;
}
@@ -1395,6 +1423,11 @@ static int umc_normaddr_to_sysaddr(u64 norm_addr, u16 nid, u8 umc, u64 *sys_addr
ctx.nid = nid;
ctx.inst_id = umc;
+ if (df_ops->get_masks(&ctx)) {
+ pr_debug("Failed to get masks");
+ return -EINVAL;
+ }
+
if (df_ops->get_cs_fabric_id(&ctx)) {
pr_debug("Failed to get CS Fabric ID");
return -EINVAL;
--
2.25.1
next prev parent reply other threads:[~2022-01-27 20:42 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-27 20:40 [PATCH v4 00/24] AMD MCA Address Translation Updates Yazen Ghannam
2022-01-27 20:40 ` [PATCH v4 01/24] EDAC/amd64: Define Data Fabric operations Yazen Ghannam
2022-02-11 19:10 ` Borislav Petkov
2022-03-09 21:42 ` Yazen Ghannam
2022-01-27 20:40 ` [PATCH v4 02/24] EDAC/amd64: Define functions for DramOffset Yazen Ghannam
2022-02-11 19:23 ` Borislav Petkov
2022-03-09 21:43 ` Yazen Ghannam
2022-01-27 20:40 ` [PATCH v4 03/24] EDAC/amd64: Define function to read DRAM address map registers Yazen Ghannam
2022-01-27 20:40 ` [PATCH v4 04/24] EDAC/amd64: Define function to find interleaving mode Yazen Ghannam
2022-01-27 20:40 ` [PATCH v4 05/24] EDAC/amd64: Define function to denormalize address Yazen Ghannam
2022-01-27 20:40 ` [PATCH v4 06/24] EDAC/amd64: Define function to add DRAM base and hole Yazen Ghannam
2022-01-27 20:40 ` [PATCH v4 07/24] EDAC/amd64: Define function to dehash address Yazen Ghannam
2022-02-11 22:47 ` Borislav Petkov
2022-03-09 21:50 ` Yazen Ghannam
2022-03-10 16:01 ` Borislav Petkov
2022-01-27 20:40 ` [PATCH v4 08/24] EDAC/amd64: Define function to check DRAM limit address Yazen Ghannam
2022-02-14 10:06 ` Borislav Petkov
2022-03-09 22:03 ` Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 09/24] EDAC/amd64: Remove goto statements Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 10/24] EDAC/amd64: Define function to get Interleave Address Bit Yazen Ghannam
2022-02-14 12:10 ` Borislav Petkov
2022-03-09 22:12 ` Yazen Ghannam
2022-03-10 16:09 ` Borislav Petkov
2022-01-27 20:41 ` [PATCH v4 11/24] EDAC/amd64: Skip denormalization if no interleaving Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 12/24] EDAC/amd64: Define function to get number of interleaved channels Yazen Ghannam
2022-02-14 12:20 ` Borislav Petkov
2022-03-09 22:13 ` Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 13/24] EDAC/amd64: Define function to get number of interleaved dies Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 14/24] EDAC/amd64: Define function to get number of interleaved sockets Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 15/24] EDAC/amd64: Remove unnecessary assert Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 16/24] EDAC/amd64: Define function to make space for CS ID Yazen Ghannam
2022-02-14 12:50 ` Borislav Petkov
2022-03-09 22:25 ` Yazen Ghannam
2022-03-11 21:00 ` Borislav Petkov
2022-01-27 20:41 ` [PATCH v4 17/24] EDAC/amd64: Define function to calculate " Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 18/24] EDAC/amd64: Define function to insert CS ID into address Yazen Ghannam
2022-02-14 13:09 ` Borislav Petkov
2022-03-09 22:31 ` Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 19/24] EDAC/amd64: Define function to get CS Fabric ID Yazen Ghannam
2022-01-27 20:41 ` Yazen Ghannam [this message]
2022-01-27 20:41 ` [PATCH v4 21/24] EDAC/amd64: Update CS ID calculation to match reference code Yazen Ghannam
2022-02-14 13:42 ` Borislav Petkov
2022-03-09 22:32 ` Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 22/24] EDAC/amd64: Match hash function to " Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 23/24] EDAC/amd64: Define function to get interleave address select bit Yazen Ghannam
2022-01-27 20:41 ` [PATCH v4 24/24] EDAC/amd64: Add support for address translation on DF3 systems Yazen Ghannam
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