From: Narayana Murty N <nnmlinux@linux•ibm.com>
To: mahesh@linux•ibm.com, maddy@linux•ibm.com, mpe@ellerman•id.au,
christophe.leroy@csgroup•eu, gregkh@linuxfoundation•org,
oohall@gmail•com, npiggin@gmail•com
Cc: linuxppc-dev@lists•ozlabs.org, linux-kernel@vger•kernel.org,
tyreld@linux•ibm.com, vaibhav@linux•ibm.com, sbhat@linux•ibm.com,
ganeshgr@linux•ibm.com, sourabhjain@linux•ibm.com,
haren@linux•ibm.com, nnmlinux@linux•ibm.com, thuth@redhat•com
Subject: [PATCH v2 5/5] powerpc/powernv: Map EEH error types to OPAL error injection types
Date: Wed, 27 May 2026 12:54:33 +0530 [thread overview]
Message-ID: <20260527072433.94510-6-nnmlinux@linux.ibm.com> (raw)
In-Reply-To: <20260527072433.94510-1-nnmlinux@linux.ibm.com>
Add a mapping layer in pnv_eeh_err_inject() to translate generic EEH
error types to OPAL-specific error injection types. This decouples the
VFIO error injection interface from OPAL implementation details.
Map EEH_ERR_TYPE_32 to OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR and
EEH_ERR_TYPE_64 to OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR64. Return -EINVAL
for unsupported error types.
This provides better abstraction between the generic EEH layer and
platform-specific implementation.
Signed-off-by: Narayana Murty N <nnmlinux@linux•ibm.com>
---
arch/powerpc/include/uapi/asm/eeh.h | 20 ++++++++++++++++++--
arch/powerpc/platforms/powernv/eeh-powernv.c | 11 +++++++++--
2 files changed, 27 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/uapi/asm/eeh.h b/arch/powerpc/include/uapi/asm/eeh.h
index 86645cab2827..d88d82796905 100644
--- a/arch/powerpc/include/uapi/asm/eeh.h
+++ b/arch/powerpc/include/uapi/asm/eeh.h
@@ -16,8 +16,24 @@
#define EEH_PE_STATE_UNAVAIL 5 /* Unavailable */
/* EEH error types and functions */
-#define EEH_ERR_TYPE_32 0 /* 32-bits error */
-#define EEH_ERR_TYPE_64 1 /* 64-bits error */
+#define EEH_ERR_TYPE_FATAL 0x1 /* Fatal error */
+#define EEH_ERR_TYPE_RECOVERED_RANDOM 0x2 /* Recovered random event */
+#define EEH_ERR_TYPE_RECOVERED_SPECIAL 0x3 /* Recovered special event */
+#define EEH_ERR_TYPE_CORRUPTED_PAGE 0x4 /* Corrupted page */
+#define EEH_ERR_TYPE_CORRUPTED_SLB 0x5 /* Corrupted SLB */
+#define EEH_ERR_TYPE_TRANSLATOR_FAILURE 0x6 /* Translator failure */
+#define EEH_ERR_TYPE_32 0x7 /* 32-bit IOA bus error */
+#define EEH_ERR_TYPE_PLATFORM_SPECIFIC 0x8 /* Platform specific */
+#define EEH_ERR_TYPE_CORRUPTED_DCACHE_START 0x9 /* Corrupted D-cache start */
+#define EEH_ERR_TYPE_CORRUPTED_DCACHE_END 0xA /* Corrupted D-cache end */
+#define EEH_ERR_TYPE_CORRUPTED_ICACHE_START 0xB /* Corrupted I-cache start */
+#define EEH_ERR_TYPE_CORRUPTED_ICACHE_END 0xC /* Corrupted I-cache end */
+#define EEH_ERR_TYPE_CORRUPTED_TLB_START 0xD /* Corrupted TLB start */
+#define EEH_ERR_TYPE_CORRUPTED_TLB_END 0xE /* Corrupted TLB end */
+#define EEH_ERR_TYPE_64 0xF /* 64-bit IOA bus error */
+#define EEH_ERR_TYPE_UPSTREAM_IO_ERROR 0x10 /* Upstream IO error */
+
+/* EEH supported function types */
#define EEH_ERR_FUNC_MIN 0
#define EEH_ERR_FUNC_LD_MEM_ADDR 0 /* Memory load */
#define EEH_ERR_FUNC_LD_MEM_DATA 1
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index db3370d1673c..ee156d397e93 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -1169,8 +1169,15 @@ static int pnv_eeh_err_inject(struct eeh_pe *pe, int type, int func,
struct pnv_phb *phb = hose->private_data;
s64 rc;
- if (type != OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR &&
- type != OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR64) {
+ /* Map generic EEH Type to OPAL Type */
+ switch (type) {
+ case EEH_ERR_TYPE_32:
+ type = OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR;
+ break;
+ case EEH_ERR_TYPE_64:
+ type = OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR64;
+ break;
+ default:
pr_warn("%s: Invalid error type %d\n",
__func__, type);
return -ERANGE;
--
2.54.0
next prev parent reply other threads:[~2026-05-27 7:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-27 7:24 [PATCH v2 0/5] powerpc/pseries: Add full RTAS-based error injection support Narayana Murty N
2026-05-27 7:24 ` [PATCH v2 1/5] powerpc/rtas: Handle special return format for RTAS_FN_IBM_OPEN_ERRINJCT Narayana Murty N
2026-06-07 11:19 ` Sourabh Jain
2026-05-27 7:24 ` [PATCH v2 2/5] powerpc/pseries: Add RTAS error injection buffer infrastructure Narayana Murty N
2026-05-27 7:24 ` [PATCH v2 3/5] powerpc/pseries: Add RTAS error injection validation helpers Narayana Murty N
2026-06-07 12:17 ` Sourabh Jain
2026-05-27 7:24 ` [PATCH v2 4/5] powerpc/pseries: Implement RTAS error injection via pseries_eeh_err_inject Narayana Murty N
2026-06-07 13:35 ` Sourabh Jain
2026-05-27 7:24 ` Narayana Murty N [this message]
2026-06-07 13:46 ` [PATCH v2 5/5] powerpc/powernv: Map EEH error types to OPAL error injection types Sourabh Jain
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