From: Yazen Ghannam <Yazen.Ghannam@amd.com>
To: linux-edac@vger.kernel.org
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>,
linux-kernel@vger.kernel.org, tony.luck@intel.com,
x86@kernel.org, Smita.KoralahalliChannabasappa@amd.com
Subject: [PATCH 19/25] x86/MCE/AMD: Define function to calculate CS ID
Date: Fri, 7 May 2021 15:01:34 -0400 [thread overview]
Message-ID: <20210507190140.18854-20-Yazen.Ghannam@amd.com> (raw)
In-Reply-To: <20210507190140.18854-1-Yazen.Ghannam@amd.com>
From: Yazen Ghannam <yazen.ghannam@amd.com>
Move code used to calculate the CS ID into a separate helper function.
Drop redundant code comment about reading DF register.
The "num_intlv_bits" variable is left uninitialized as it will be removed
in a later patch.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
---
arch/x86/kernel/cpu/mce/amd.c | 97 +++++++++++++++++------------------
1 file changed, 48 insertions(+), 49 deletions(-)
diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c
index ba365901e39d..ae49cef4792f 100644
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -892,12 +892,54 @@ static void make_space_for_cs_id(struct addr_ctx *ctx)
}
}
-static int denormalize_addr(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, sock_id_bit, cs_fabric_id, cs_mask = 0;
u32 tmp;
- u8 die_id_shift, die_id_mask, socket_id_shift, socket_id_mask;
- u8 num_intlv_bits, cs_mask = 0;
+ if (amd_df_indirect_read(ctx->nid, df_regs[FAB_BLK_INST_INFO_3], ctx->umc, &tmp))
+ return -EINVAL;
+
+ cs_fabric_id = (tmp >> 8) & 0xFF;
+ die_id_bit = 0;
+
+ /* If interleaved over more than 1 channel: */
+ if (ctx->intlv_num_chan) {
+ die_id_bit = ctx->intlv_num_chan;
+ cs_mask = (1 << die_id_bit) - 1;
+ ctx->cs_id = cs_fabric_id & cs_mask;
+ }
+
+ sock_id_bit = die_id_bit;
+
+ if (ctx->intlv_num_dies || ctx->intlv_num_sockets)
+ if (amd_df_indirect_read(ctx->nid, df_regs[SYS_FAB_ID_MASK], ctx->umc, &tmp))
+ return -EINVAL;
+
+ /* 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 = (tmp >> 24) & 0xF;
+ die_id_mask = (tmp >> 8) & 0xFF;
+
+ ctx->cs_id |= ((cs_fabric_id & die_id_mask) >> die_id_shift) << die_id_bit;
+ }
+
+ /* If interleaved over more than 1 socket: */
+ if (ctx->intlv_num_sockets) {
+ socket_id_shift = (tmp >> 28) & 0xF;
+ socket_id_mask = (tmp >> 16) & 0xFF;
+
+ ctx->cs_id |= ((cs_fabric_id & socket_id_mask) >> socket_id_shift) << sock_id_bit;
+ }
+
+ return 0;
+}
+
+static int denormalize_addr(struct addr_ctx *ctx)
+{
+ u8 num_intlv_bits;
/* Return early if no interleaving. */
if (ctx->intlv_mode == NONE)
@@ -912,55 +954,12 @@ static int denormalize_addr(struct addr_ctx *ctx)
make_space_for_cs_id(ctx);
+ if (calculate_cs_id(ctx))
+ return -EINVAL;
+
if (num_intlv_bits > 0) {
- u8 die_id_bit, sock_id_bit, cs_fabric_id;
u64 temp_addr_i;
- /*
- * Read FabricBlockInstanceInformation3_CS[BlockFabricID].
- * This is the fabric id for this coherent slave. Use
- * umc/channel# as instance id of the coherent slave
- * for FICAA.
- */
- if (amd_df_indirect_read(ctx->nid, df_regs[FAB_BLK_INST_INFO_3], ctx->umc, &tmp))
- return -EINVAL;
-
- cs_fabric_id = (tmp >> 8) & 0xFF;
- die_id_bit = 0;
-
- /* If interleaved over more than 1 channel: */
- if (ctx->intlv_num_chan) {
- die_id_bit = ctx->intlv_num_chan;
- cs_mask = (1 << die_id_bit) - 1;
- ctx->cs_id = cs_fabric_id & cs_mask;
- }
-
- sock_id_bit = die_id_bit;
-
- if (ctx->intlv_num_dies || ctx->intlv_num_sockets)
- if (amd_df_indirect_read(ctx->nid, df_regs[SYS_FAB_ID_MASK],
- ctx->umc, &tmp))
- return -EINVAL;
-
- /* 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 = (tmp >> 24) & 0xF;
- die_id_mask = (tmp >> 8) & 0xFF;
-
- ctx->cs_id |= ((cs_fabric_id & die_id_mask)
- >> die_id_shift) << die_id_bit;
- }
-
- /* If interleaved over more than 1 socket. */
- if (ctx->intlv_num_sockets) {
- socket_id_shift = (tmp >> 28) & 0xF;
- socket_id_mask = (tmp >> 16) & 0xFF;
-
- ctx->cs_id |= ((cs_fabric_id & socket_id_mask)
- >> socket_id_shift) << sock_id_bit;
- }
-
/*
* The pre-interleaved address consists of XXXXXXIIIYYYYY
* where III is the ID for this CS, and XXXXXXYYYYY are the
--
2.25.1
next prev parent reply other threads:[~2021-05-07 19:03 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 19:01 [PATCH 00/25] AMD MCA Address Translation Updates Yazen Ghannam
2021-05-07 19:01 ` [PATCH 01/25] x86/MCE/AMD: Don't use naked values for DF registers Yazen Ghannam
2021-05-07 19:01 ` [PATCH 02/25] x86/MCE/AMD: Add context struct Yazen Ghannam
2021-05-07 19:01 ` [PATCH 03/25] x86/MCE/AMD: Define functions for DramOffset Yazen Ghannam
2021-05-07 19:01 ` [PATCH 04/25] x86/MCE/AMD: Define function to read DRAM address map registers Yazen Ghannam
2021-05-07 19:01 ` [PATCH 05/25] x86/MCE/AMD: Define function to find interleaving mode Yazen Ghannam
2021-05-07 19:01 ` [PATCH 06/25] x86/MCE/AMD: Define function to denormalize address Yazen Ghannam
2021-05-07 19:01 ` [PATCH 07/25] x86/MCE/AMD: Define function to add DRAM base and hole Yazen Ghannam
2021-05-07 19:01 ` [PATCH 08/25] x86/MCE/AMD: Define function to dehash address Yazen Ghannam
2021-05-07 19:01 ` [PATCH 09/25] x86/MCE/AMD: Define function to check DRAM limit address Yazen Ghannam
2021-05-07 19:01 ` [PATCH 10/25] x86/MCE/AMD: Remove goto statements Yazen Ghannam
2021-05-07 19:01 ` [PATCH 11/25] x86/MCE/AMD: Simplify function parameters Yazen Ghannam
2021-05-07 19:01 ` [PATCH 12/25] x86/MCE/AMD: Define function to get Interleave Address Bit Yazen Ghannam
2021-05-07 19:01 ` [PATCH 13/25] x86/MCE/AMD: Skip denormalization if no interleaving Yazen Ghannam
2021-05-07 19:01 ` [PATCH 14/25] x86/MCE/AMD: Define function to get number of interleaved channels Yazen Ghannam
2021-05-07 19:01 ` [PATCH 15/25] x86/MCE/AMD: Define function to get number of interleaved dies Yazen Ghannam
2021-05-07 19:01 ` [PATCH 16/25] x86/MCE/AMD: Define function to get number of interleaved sockets Yazen Ghannam
2021-05-07 19:01 ` [PATCH 17/25] x86/MCE/AMD: Remove unnecessary assert Yazen Ghannam
2021-05-07 19:01 ` [PATCH 18/25] x86/MCE/AMD: Define function to make space for CS ID Yazen Ghannam
2021-05-07 19:01 ` Yazen Ghannam [this message]
2021-05-07 19:01 ` [PATCH 20/25] x86/MCE/AMD: Define function to insert CS ID into address Yazen Ghannam
2021-05-07 19:01 ` [PATCH 21/25] x86/MCE/AMD: Define function to get CS Fabric ID Yazen Ghannam
2021-05-07 19:01 ` [PATCH 22/25] x86/MCE/AMD: Define function to find shift and mask values Yazen Ghannam
2021-05-07 19:01 ` [PATCH 23/25] x86/MCE/AMD: Update CS ID calculation to match reference code Yazen Ghannam
2021-05-07 19:01 ` [PATCH 24/25] x86/MCE/AMD: Match hash function to " Yazen Ghannam
2021-05-07 19:01 ` [PATCH 25/25] x86/MCE/AMD: Add support for address translation on DF3 systems Yazen Ghannam
2021-05-07 20:32 ` [PATCH 00/25] AMD MCA Address Translation Updates Randy Dunlap
2021-05-11 15:42 ` Yazen Ghannam
2021-05-11 16:13 ` Randy Dunlap
2021-05-11 16:28 ` Borislav Petkov
2021-05-17 12:57 ` Borislav Petkov
2021-05-19 3:52 ` Yazen Ghannam
2021-05-19 14:32 ` Borislav Petkov
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