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Diffstat (limited to 'arch/powerpc/kernel/mce_power.c')
-rw-r--r--arch/powerpc/kernel/mce_power.c780
1 files changed, 370 insertions, 410 deletions
diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index 763d6f58caa8..f913139bb0c2 100644
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c
@@ -72,10 +72,14 @@ void __flush_tlb_power8(unsigned int action)
void __flush_tlb_power9(unsigned int action)
{
+ unsigned int num_sets;
+
if (radix_enabled())
- flush_tlb_206(POWER9_TLB_SETS_RADIX, action);
+ num_sets = POWER9_TLB_SETS_RADIX;
+ else
+ num_sets = POWER9_TLB_SETS_HASH;
- flush_tlb_206(POWER9_TLB_SETS_HASH, action);
+ flush_tlb_206(num_sets, action);
}
@@ -147,159 +151,365 @@ static int mce_flush(int what)
return 0;
}
-static int mce_handle_flush_derrors(uint64_t dsisr, uint64_t slb, uint64_t tlb, uint64_t erat)
-{
- if ((dsisr & slb) && mce_flush(MCE_FLUSH_SLB))
- dsisr &= ~slb;
- if ((dsisr & erat) && mce_flush(MCE_FLUSH_ERAT))
- dsisr &= ~erat;
- if ((dsisr & tlb) && mce_flush(MCE_FLUSH_TLB))
- dsisr &= ~tlb;
- /* Any other errors we don't understand? */
- if (dsisr)
- return 0;
- return 1;
-}
-
-static long mce_handle_derror(uint64_t dsisr, uint64_t slb_error_bits)
+#define SRR1_MC_LOADSTORE(srr1) ((srr1) & PPC_BIT(42))
+
+struct mce_ierror_table {
+ unsigned long srr1_mask;
+ unsigned long srr1_value;
+ bool nip_valid; /* nip is a valid indicator of faulting address */
+ unsigned int error_type;
+ unsigned int error_subtype;
+ unsigned int initiator;
+ unsigned int severity;
+};
+
+static const struct mce_ierror_table mce_p7_ierror_table[] = {
+{ 0x00000000001c0000, 0x0000000000040000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000001c0000, 0x0000000000080000, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000001c0000, 0x00000000000c0000, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000001c0000, 0x0000000000100000, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_INDETERMINATE, /* BOTH */
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000001c0000, 0x0000000000140000, true,
+ MCE_ERROR_TYPE_TLB, MCE_TLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000001c0000, 0x0000000000180000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000001c0000, 0x00000000001c0000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0, 0, 0, 0, 0, 0 } };
+
+static const struct mce_ierror_table mce_p8_ierror_table[] = {
+{ 0x00000000081c0000, 0x0000000000040000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000080000, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x00000000000c0000, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000100000, true,
+ MCE_ERROR_TYPE_ERAT,MCE_ERAT_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000140000, true,
+ MCE_ERROR_TYPE_TLB, MCE_TLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000180000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x00000000001c0000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000008000000, true,
+ MCE_ERROR_TYPE_LINK,MCE_LINK_ERROR_IFETCH_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000008040000, true,
+ MCE_ERROR_TYPE_LINK,MCE_LINK_ERROR_PAGE_TABLE_WALK_IFETCH_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0, 0, 0, 0, 0, 0 } };
+
+static const struct mce_ierror_table mce_p9_ierror_table[] = {
+{ 0x00000000081c0000, 0x0000000000040000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000080000, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x00000000000c0000, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000100000, true,
+ MCE_ERROR_TYPE_ERAT,MCE_ERAT_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000140000, true,
+ MCE_ERROR_TYPE_TLB, MCE_TLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000000180000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000008000000, true,
+ MCE_ERROR_TYPE_LINK,MCE_LINK_ERROR_IFETCH_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000008040000, true,
+ MCE_ERROR_TYPE_LINK,MCE_LINK_ERROR_PAGE_TABLE_WALK_IFETCH_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x00000000080c0000, true,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000008100000, true,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000000081c0000, 0x0000000008140000, false,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_FATAL, }, /* ASYNC is fatal */
+{ 0x00000000081c0000, 0x0000000008180000, false,
+ MCE_ERROR_TYPE_LINK,MCE_LINK_ERROR_STORE_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_FATAL, }, /* ASYNC is fatal */
+{ 0x00000000081c0000, 0x00000000081c0000, true,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH_FOREIGN,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0, 0, 0, 0, 0, 0 } };
+
+struct mce_derror_table {
+ unsigned long dsisr_value;
+ bool dar_valid; /* dar is a valid indicator of faulting address */
+ unsigned int error_type;
+ unsigned int error_subtype;
+ unsigned int initiator;
+ unsigned int severity;
+};
+
+static const struct mce_derror_table mce_p7_derror_table[] = {
+{ 0x00008000, false,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_LOAD_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00004000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000800, true,
+ MCE_ERROR_TYPE_ERAT, MCE_ERAT_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000400, true,
+ MCE_ERROR_TYPE_TLB, MCE_TLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000100, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000080, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000040, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_INDETERMINATE, /* BOTH */
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0, false, 0, 0, 0, 0 } };
+
+static const struct mce_derror_table mce_p8_derror_table[] = {
+{ 0x00008000, false,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_LOAD_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00004000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00002000, true,
+ MCE_ERROR_TYPE_LINK, MCE_LINK_ERROR_LOAD_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00001000, true,
+ MCE_ERROR_TYPE_LINK, MCE_LINK_ERROR_PAGE_TABLE_WALK_LOAD_STORE_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000800, true,
+ MCE_ERROR_TYPE_ERAT, MCE_ERAT_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000400, true,
+ MCE_ERROR_TYPE_TLB, MCE_TLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000200, true,
+ MCE_ERROR_TYPE_ERAT, MCE_ERAT_ERROR_MULTIHIT, /* SECONDARY ERAT */
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000100, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000080, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0, false, 0, 0, 0, 0 } };
+
+static const struct mce_derror_table mce_p9_derror_table[] = {
+{ 0x00008000, false,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_LOAD_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00004000, true,
+ MCE_ERROR_TYPE_UE, MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00002000, true,
+ MCE_ERROR_TYPE_LINK, MCE_LINK_ERROR_LOAD_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00001000, true,
+ MCE_ERROR_TYPE_LINK, MCE_LINK_ERROR_PAGE_TABLE_WALK_LOAD_STORE_TIMEOUT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000800, true,
+ MCE_ERROR_TYPE_ERAT, MCE_ERAT_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000400, true,
+ MCE_ERROR_TYPE_TLB, MCE_TLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000200, false,
+ MCE_ERROR_TYPE_USER, MCE_USER_ERROR_TLBIE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000100, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000080, true,
+ MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000040, true,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_LOAD,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000020, false,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000010, false,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE_FOREIGN,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0x00000008, false,
+ MCE_ERROR_TYPE_RA, MCE_RA_ERROR_LOAD_STORE_FOREIGN,
+ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
+{ 0, false, 0, 0, 0, 0 } };
+
+static int mce_handle_ierror(struct pt_regs *regs,
+ const struct mce_ierror_table table[],
+ struct mce_error_info *mce_err, uint64_t *addr)
{
- long handled = 1;
+ uint64_t srr1 = regs->msr;
+ int handled = 0;
+ int i;
+
+ *addr = 0;
+
+ for (i = 0; table[i].srr1_mask; i++) {
+ if ((srr1 & table[i].srr1_mask) != table[i].srr1_value)
+ continue;
+
+ /* attempt to correct the error */
+ switch (table[i].error_type) {
+ case MCE_ERROR_TYPE_SLB:
+ handled = mce_flush(MCE_FLUSH_SLB);
+ break;
+ case MCE_ERROR_TYPE_ERAT:
+ handled = mce_flush(MCE_FLUSH_ERAT);
+ break;
+ case MCE_ERROR_TYPE_TLB:
+ handled = mce_flush(MCE_FLUSH_TLB);
+ break;
+ }
- /*
- * flush and reload SLBs for SLB errors and flush TLBs for TLB errors.
- * reset the error bits whenever we handle them so that at the end
- * we can check whether we handled all of them or not.
- * */
-#ifdef CONFIG_PPC_STD_MMU_64
- if (dsisr & slb_error_bits) {
- flush_and_reload_slb();
- /* reset error bits */
- dsisr &= ~(slb_error_bits);
- }
- if (dsisr & P7_DSISR_MC_TLB_MULTIHIT_MFTLB) {
- if (cur_cpu_spec && cur_cpu_spec->flush_tlb)
- cur_cpu_spec->flush_tlb(TLB_INVAL_SCOPE_GLOBAL);
- /* reset error bits */
- dsisr &= ~P7_DSISR_MC_TLB_MULTIHIT_MFTLB;
+ /* now fill in mce_error_info */
+ mce_err->error_type = table[i].error_type;
+ switch (table[i].error_type) {
+ case MCE_ERROR_TYPE_UE:
+ mce_err->u.ue_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_SLB:
+ mce_err->u.slb_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_ERAT:
+ mce_err->u.erat_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_TLB:
+ mce_err->u.tlb_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_USER:
+ mce_err->u.user_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_RA:
+ mce_err->u.ra_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_LINK:
+ mce_err->u.link_error_type = table[i].error_subtype;
+ break;
+ }
+ mce_err->severity = table[i].severity;
+ mce_err->initiator = table[i].initiator;
+ if (table[i].nip_valid)
+ *addr = regs->nip;
+ return handled;
}
-#endif
- /* Any other errors we don't understand? */
- if (dsisr & 0xffffffffUL)
- handled = 0;
- return handled;
-}
+ mce_err->error_type = MCE_ERROR_TYPE_UNKNOWN;
+ mce_err->severity = MCE_SEV_ERROR_SYNC;
+ mce_err->initiator = MCE_INITIATOR_CPU;
-static long mce_handle_derror_p7(uint64_t dsisr)
-{
- return mce_handle_derror(dsisr, P7_DSISR_MC_SLB_ERRORS);
+ return 0;
}
-static long mce_handle_common_ierror(uint64_t srr1)
+static int mce_handle_derror(struct pt_regs *regs,
+ const struct mce_derror_table table[],
+ struct mce_error_info *mce_err, uint64_t *addr)
{
- long handled = 0;
-
- switch (P7_SRR1_MC_IFETCH(srr1)) {
- case 0:
- break;
-#ifdef CONFIG_PPC_STD_MMU_64
- case P7_SRR1_MC_IFETCH_SLB_PARITY:
- case P7_SRR1_MC_IFETCH_SLB_MULTIHIT:
- /* flush and reload SLBs for SLB errors. */
- flush_and_reload_slb();
- handled = 1;
- break;
- case P7_SRR1_MC_IFETCH_TLB_MULTIHIT:
- if (cur_cpu_spec && cur_cpu_spec->flush_tlb) {
- cur_cpu_spec->flush_tlb(TLB_INVAL_SCOPE_GLOBAL);
- handled = 1;
+ uint64_t dsisr = regs->dsisr;
+ int handled = 0;
+ int found = 0;
+ int i;
+
+ *addr = 0;
+
+ for (i = 0; table[i].dsisr_value; i++) {
+ if (!(dsisr & table[i].dsisr_value))
+ continue;
+
+ /* attempt to correct the error */
+ switch (table[i].error_type) {
+ case MCE_ERROR_TYPE_SLB:
+ if (mce_flush(MCE_FLUSH_SLB))
+ handled = 1;
+ break;
+ case MCE_ERROR_TYPE_ERAT:
+ if (mce_flush(MCE_FLUSH_ERAT))
+ handled = 1;
+ break;
+ case MCE_ERROR_TYPE_TLB:
+ if (mce_flush(MCE_FLUSH_TLB))
+ handled = 1;
+ break;
}
- break;
-#endif
- default:
- break;
- }
- return handled;
-}
-
-static long mce_handle_ierror_p7(uint64_t srr1)
-{
- long handled = 0;
-
- handled = mce_handle_common_ierror(srr1);
+ /*
+ * Attempt to handle multiple conditions, but only return
+ * one. Ensure uncorrectable errors are first in the table
+ * to match.
+ */
+ if (found)
+ continue;
+
+ /* now fill in mce_error_info */
+ mce_err->error_type = table[i].error_type;
+ switch (table[i].error_type) {
+ case MCE_ERROR_TYPE_UE:
+ mce_err->u.ue_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_SLB:
+ mce_err->u.slb_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_ERAT:
+ mce_err->u.erat_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_TLB:
+ mce_err->u.tlb_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_USER:
+ mce_err->u.user_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_RA:
+ mce_err->u.ra_error_type = table[i].error_subtype;
+ break;
+ case MCE_ERROR_TYPE_LINK:
+ mce_err->u.link_error_type = table[i].error_subtype;
+ break;
+ }
+ mce_err->severity = table[i].severity;
+ mce_err->initiator = table[i].initiator;
+ if (table[i].dar_valid)
+ *addr = regs->dar;
-#ifdef CONFIG_PPC_STD_MMU_64
- if (P7_SRR1_MC_IFETCH(srr1) == P7_SRR1_MC_IFETCH_SLB_BOTH) {
- flush_and_reload_slb();
- handled = 1;
+ found = 1;
}
-#endif
- return handled;
-}
-static void mce_get_common_ierror(struct mce_error_info *mce_err, uint64_t srr1)
-{
- switch (P7_SRR1_MC_IFETCH(srr1)) {
- case P7_SRR1_MC_IFETCH_SLB_PARITY:
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_PARITY;
- break;
- case P7_SRR1_MC_IFETCH_SLB_MULTIHIT:
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_MULTIHIT;
- break;
- case P7_SRR1_MC_IFETCH_TLB_MULTIHIT:
- mce_err->error_type = MCE_ERROR_TYPE_TLB;
- mce_err->u.tlb_error_type = MCE_TLB_ERROR_MULTIHIT;
- break;
- case P7_SRR1_MC_IFETCH_UE:
- case P7_SRR1_MC_IFETCH_UE_IFU_INTERNAL:
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type = MCE_UE_ERROR_IFETCH;
- break;
- case P7_SRR1_MC_IFETCH_UE_TLB_RELOAD:
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type =
- MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH;
- break;
- }
-}
+ if (found)
+ return handled;
-static void mce_get_ierror_p7(struct mce_error_info *mce_err, uint64_t srr1)
-{
- mce_get_common_ierror(mce_err, srr1);
- if (P7_SRR1_MC_IFETCH(srr1) == P7_SRR1_MC_IFETCH_SLB_BOTH) {
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_INDETERMINATE;
- }
-}
+ mce_err->error_type = MCE_ERROR_TYPE_UNKNOWN;
+ mce_err->severity = MCE_SEV_ERROR_SYNC;
+ mce_err->initiator = MCE_INITIATOR_CPU;
-static void mce_get_derror_p7(struct mce_error_info *mce_err, uint64_t dsisr)
-{
- if (dsisr & P7_DSISR_MC_UE) {
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type = MCE_UE_ERROR_LOAD_STORE;
- } else if (dsisr & P7_DSISR_MC_UE_TABLEWALK) {
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type =
- MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE;
- } else if (dsisr & P7_DSISR_MC_ERAT_MULTIHIT) {
- mce_err->error_type = MCE_ERROR_TYPE_ERAT;
- mce_err->u.erat_error_type = MCE_ERAT_ERROR_MULTIHIT;
- } else if (dsisr & P7_DSISR_MC_SLB_MULTIHIT) {
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_MULTIHIT;
- } else if (dsisr & P7_DSISR_MC_SLB_PARITY_MFSLB) {
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_PARITY;
- } else if (dsisr & P7_DSISR_MC_TLB_MULTIHIT_MFTLB) {
- mce_err->error_type = MCE_ERROR_TYPE_TLB;
- mce_err->u.tlb_error_type = MCE_TLB_ERROR_MULTIHIT;
- } else if (dsisr & P7_DSISR_MC_SLB_MULTIHIT_PARITY) {
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_INDETERMINATE;
- }
+ return 0;
}
static long mce_handle_ue_error(struct pt_regs *regs)
@@ -320,292 +530,42 @@ static long mce_handle_ue_error(struct pt_regs *regs)
return handled;
}
-long __machine_check_early_realmode_p7(struct pt_regs *regs)
+static long mce_handle_error(struct pt_regs *regs,
+ const struct mce_derror_table dtable[],
+ const struct mce_ierror_table itable[])
{
- uint64_t srr1, nip, addr;
- long handled = 1;
- struct mce_error_info mce_error_info = { 0 };
-
- mce_error_info.severity = MCE_SEV_ERROR_SYNC;
- mce_error_info.initiator = MCE_INITIATOR_CPU;
-
- srr1 = regs->msr;
- nip = regs->nip;
+ struct mce_error_info mce_err = { 0 };
+ uint64_t addr;
+ uint64_t srr1 = regs->msr;
+ long handled;
- /*
- * Handle memory errors depending whether this was a load/store or
- * ifetch exception. Also, populate the mce error_type and
- * type-specific error_type from either SRR1 or DSISR, depending
- * whether this was a load/store or ifetch exception
- */
- if (P7_SRR1_MC_LOADSTORE(srr1)) {
- handled = mce_handle_derror_p7(regs->dsisr);
- mce_get_derror_p7(&mce_error_info, regs->dsisr);
- addr = regs->dar;
- } else {
- handled = mce_handle_ierror_p7(srr1);
- mce_get_ierror_p7(&mce_error_info, srr1);
- addr = regs->nip;
- }
+ if (SRR1_MC_LOADSTORE(srr1))
+ handled = mce_handle_derror(regs, dtable, &mce_err, &addr);
+ else
+ handled = mce_handle_ierror(regs, itable, &mce_err, &addr);
- /* Handle UE error. */
- if (mce_error_info.error_type == MCE_ERROR_TYPE_UE)
+ if (!handled && mce_err.error_type == MCE_ERROR_TYPE_UE)
handled = mce_handle_ue_error(regs);
- save_mce_event(regs, handled, &mce_error_info, nip, addr);
- return handled;
-}
-
-static void mce_get_ierror_p8(struct mce_error_info *mce_err, uint64_t srr1)
-{
- mce_get_common_ierror(mce_err, srr1);
- if (P7_SRR1_MC_IFETCH(srr1) == P8_SRR1_MC_IFETCH_ERAT_MULTIHIT) {
- mce_err->error_type = MCE_ERROR_TYPE_ERAT;
- mce_err->u.erat_error_type = MCE_ERAT_ERROR_MULTIHIT;
- }
-}
-
-static void mce_get_derror_p8(struct mce_error_info *mce_err, uint64_t dsisr)
-{
- mce_get_derror_p7(mce_err, dsisr);
- if (dsisr & P8_DSISR_MC_ERAT_MULTIHIT_SEC) {
- mce_err->error_type = MCE_ERROR_TYPE_ERAT;
- mce_err->u.erat_error_type = MCE_ERAT_ERROR_MULTIHIT;
- }
-}
-
-static long mce_handle_ierror_p8(uint64_t srr1)
-{
- long handled = 0;
+ save_mce_event(regs, handled, &mce_err, regs->nip, addr);
- handled = mce_handle_common_ierror(srr1);
-
-#ifdef CONFIG_PPC_STD_MMU_64
- if (P7_SRR1_MC_IFETCH(srr1) == P8_SRR1_MC_IFETCH_ERAT_MULTIHIT) {
- flush_and_reload_slb();
- handled = 1;
- }
-#endif
return handled;
}
-static long mce_handle_derror_p8(uint64_t dsisr)
-{
- return mce_handle_derror(dsisr, P8_DSISR_MC_SLB_ERRORS);
-}
-
-long __machine_check_early_realmode_p8(struct pt_regs *regs)
-{
- uint64_t srr1, nip, addr;
- long handled = 1;
- struct mce_error_info mce_error_info = { 0 };
-
- mce_error_info.severity = MCE_SEV_ERROR_SYNC;
- mce_error_info.initiator = MCE_INITIATOR_CPU;
-
- srr1 = regs->msr;
- nip = regs->nip;
-
- if (P7_SRR1_MC_LOADSTORE(srr1)) {
- handled = mce_handle_derror_p8(regs->dsisr);
- mce_get_derror_p8(&mce_error_info, regs->dsisr);
- addr = regs->dar;
- } else {
- handled = mce_handle_ierror_p8(srr1);
- mce_get_ierror_p8(&mce_error_info, srr1);
- addr = regs->nip;
- }
-
- /* Handle UE error. */
- if (mce_error_info.error_type == MCE_ERROR_TYPE_UE)
- handled = mce_handle_ue_error(regs);
-
- save_mce_event(regs, handled, &mce_error_info, nip, addr);
- return handled;
-}
-
-static int mce_handle_derror_p9(struct pt_regs *regs)
-{
- uint64_t dsisr = regs->dsisr;
-
- return mce_handle_flush_derrors(dsisr,
- P9_DSISR_MC_SLB_PARITY_MFSLB |
- P9_DSISR_MC_SLB_MULTIHIT_MFSLB,
-
- P9_DSISR_MC_TLB_MULTIHIT_MFTLB,
-
- P9_DSISR_MC_ERAT_MULTIHIT);
-}
-
-static int mce_handle_ierror_p9(struct pt_regs *regs)
+long __machine_check_early_realmode_p7(struct pt_regs *regs)
{
- uint64_t srr1 = regs->msr;
+ /* P7 DD1 leaves top bits of DSISR undefined */
+ regs->dsisr &= 0x0000ffff;
- switch (P9_SRR1_MC_IFETCH(srr1)) {
- case P9_SRR1_MC_IFETCH_SLB_PARITY:
- case P9_SRR1_MC_IFETCH_SLB_MULTIHIT:
- return mce_flush(MCE_FLUSH_SLB);
- case P9_SRR1_MC_IFETCH_TLB_MULTIHIT:
- return mce_flush(MCE_FLUSH_TLB);
- case P9_SRR1_MC_IFETCH_ERAT_MULTIHIT:
- return mce_flush(MCE_FLUSH_ERAT);
- default:
- return 0;
- }
+ return mce_handle_error(regs, mce_p7_derror_table, mce_p7_ierror_table);
}
-static void mce_get_derror_p9(struct pt_regs *regs,
- struct mce_error_info *mce_err, uint64_t *addr)
-{
- uint64_t dsisr = regs->dsisr;
-
- mce_err->severity = MCE_SEV_ERROR_SYNC;
- mce_err->initiator = MCE_INITIATOR_CPU;
-
- if (dsisr & P9_DSISR_MC_USER_TLBIE)
- *addr = regs->nip;
- else
- *addr = regs->dar;
-
- if (dsisr & P9_DSISR_MC_UE) {
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type = MCE_UE_ERROR_LOAD_STORE;
- } else if (dsisr & P9_DSISR_MC_UE_TABLEWALK) {
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type = MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE;
- } else if (dsisr & P9_DSISR_MC_LINK_LOAD_TIMEOUT) {
- mce_err->error_type = MCE_ERROR_TYPE_LINK;
- mce_err->u.link_error_type = MCE_LINK_ERROR_LOAD_TIMEOUT;
- } else if (dsisr & P9_DSISR_MC_LINK_TABLEWALK_TIMEOUT) {
- mce_err->error_type = MCE_ERROR_TYPE_LINK;
- mce_err->u.link_error_type = MCE_LINK_ERROR_PAGE_TABLE_WALK_LOAD_STORE_TIMEOUT;
- } else if (dsisr & P9_DSISR_MC_ERAT_MULTIHIT) {
- mce_err->error_type = MCE_ERROR_TYPE_ERAT;
- mce_err->u.erat_error_type = MCE_ERAT_ERROR_MULTIHIT;
- } else if (dsisr & P9_DSISR_MC_TLB_MULTIHIT_MFTLB) {
- mce_err->error_type = MCE_ERROR_TYPE_TLB;
- mce_err->u.tlb_error_type = MCE_TLB_ERROR_MULTIHIT;
- } else if (dsisr & P9_DSISR_MC_USER_TLBIE) {
- mce_err->error_type = MCE_ERROR_TYPE_USER;
- mce_err->u.user_error_type = MCE_USER_ERROR_TLBIE;
- } else if (dsisr & P9_DSISR_MC_SLB_PARITY_MFSLB) {
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_PARITY;
- } else if (dsisr & P9_DSISR_MC_SLB_MULTIHIT_MFSLB) {
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_MULTIHIT;
- } else if (dsisr & P9_DSISR_MC_RA_LOAD) {
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_LOAD;
- } else if (dsisr & P9_DSISR_MC_RA_TABLEWALK) {
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE;
- } else if (dsisr & P9_DSISR_MC_RA_TABLEWALK_FOREIGN) {
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE_FOREIGN;
- } else if (dsisr & P9_DSISR_MC_RA_FOREIGN) {
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_LOAD_STORE_FOREIGN;
- }
-}
-
-static void mce_get_ierror_p9(struct pt_regs *regs,
- struct mce_error_info *mce_err, uint64_t *addr)
+long __machine_check_early_realmode_p8(struct pt_regs *regs)
{
- uint64_t srr1 = regs->msr;
-
- switch (P9_SRR1_MC_IFETCH(srr1)) {
- case P9_SRR1_MC_IFETCH_RA_ASYNC_STORE:
- case P9_SRR1_MC_IFETCH_LINK_ASYNC_STORE_TIMEOUT:
- mce_err->severity = MCE_SEV_FATAL;
- break;
- default:
- mce_err->severity = MCE_SEV_ERROR_SYNC;
- break;
- }
-
- mce_err->initiator = MCE_INITIATOR_CPU;
-
- *addr = regs->nip;
-
- switch (P9_SRR1_MC_IFETCH(srr1)) {
- case P9_SRR1_MC_IFETCH_UE:
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type = MCE_UE_ERROR_IFETCH;
- break;
- case P9_SRR1_MC_IFETCH_SLB_PARITY:
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_PARITY;
- break;
- case P9_SRR1_MC_IFETCH_SLB_MULTIHIT:
- mce_err->error_type = MCE_ERROR_TYPE_SLB;
- mce_err->u.slb_error_type = MCE_SLB_ERROR_MULTIHIT;
- break;
- case P9_SRR1_MC_IFETCH_ERAT_MULTIHIT:
- mce_err->error_type = MCE_ERROR_TYPE_ERAT;
- mce_err->u.erat_error_type = MCE_ERAT_ERROR_MULTIHIT;
- break;
- case P9_SRR1_MC_IFETCH_TLB_MULTIHIT:
- mce_err->error_type = MCE_ERROR_TYPE_TLB;
- mce_err->u.tlb_error_type = MCE_TLB_ERROR_MULTIHIT;
- break;
- case P9_SRR1_MC_IFETCH_UE_TLB_RELOAD:
- mce_err->error_type = MCE_ERROR_TYPE_UE;
- mce_err->u.ue_error_type = MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH;
- break;
- case P9_SRR1_MC_IFETCH_LINK_TIMEOUT:
- mce_err->error_type = MCE_ERROR_TYPE_LINK;
- mce_err->u.link_error_type = MCE_LINK_ERROR_IFETCH_TIMEOUT;
- break;
- case P9_SRR1_MC_IFETCH_LINK_TABLEWALK_TIMEOUT:
- mce_err->error_type = MCE_ERROR_TYPE_LINK;
- mce_err->u.link_error_type = MCE_LINK_ERROR_PAGE_TABLE_WALK_IFETCH_TIMEOUT;
- break;
- case P9_SRR1_MC_IFETCH_RA:
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_IFETCH;
- break;
- case P9_SRR1_MC_IFETCH_RA_TABLEWALK:
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH;
- break;
- case P9_SRR1_MC_IFETCH_RA_ASYNC_STORE:
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_STORE;
- break;
- case P9_SRR1_MC_IFETCH_LINK_ASYNC_STORE_TIMEOUT:
- mce_err->error_type = MCE_ERROR_TYPE_LINK;
- mce_err->u.link_error_type = MCE_LINK_ERROR_STORE_TIMEOUT;
- break;
- case P9_SRR1_MC_IFETCH_RA_TABLEWALK_FOREIGN:
- mce_err->error_type = MCE_ERROR_TYPE_RA;
- mce_err->u.ra_error_type = MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH_FOREIGN;
- break;
- default:
- break;
- }
+ return mce_handle_error(regs, mce_p8_derror_table, mce_p8_ierror_table);
}
long __machine_check_early_realmode_p9(struct pt_regs *regs)
{
- uint64_t nip, addr;
- long handled;
- struct mce_error_info mce_error_info = { 0 };
-
- nip = regs->nip;
-
- if (P9_SRR1_MC_LOADSTORE(regs->msr)) {
- handled = mce_handle_derror_p9(regs);
- mce_get_derror_p9(regs, &mce_error_info, &addr);
- } else {
- handled = mce_handle_ierror_p9(regs);
- mce_get_ierror_p9(regs, &mce_error_info, &addr);
- }
-
- /* Handle UE error. */
- if (mce_error_info.error_type == MCE_ERROR_TYPE_UE)
- handled = mce_handle_ue_error(regs);
-
- save_mce_event(regs, handled, &mce_error_info, nip, addr);
- return handled;
+ return mce_handle_error(regs, mce_p9_derror_table, mce_p9_ierror_table);
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-04 15:32:08 +0000