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powerpc/64s: Data driven machine check evaluation 

Have machine types define i-side and d-side tables to describe their
machine check encodings, and match entries to evaluate (for reporting)
machine checks.

Functionality is mostly unchanged (tested with a userspace harness), but
it does make a change in that it no longer records DAR as the effective
address for those errors where it is specified to be invalid (which is a
reporting change only).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.1
Nicholas Piggin 2017-03-14 22:36:46 +10:00 committed by Michael Ellerman
parent 58c8d17f2e
commit 631bc46c8c
1 changed files with 331 additions and 248 deletions
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579
arch/powerpc/kernel/mce_power.c
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@ -253,6 +253,322 @@ static int mce_handle_flush_derrors(uint64_t dsisr, uint64_t slb, uint64_t tlb,
P9_DSISR_MC_SLB_PARITY_MFSLB | \
P9_DSISR_MC_SLB_MULTIHIT_MFSLB)
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[] = {
{ 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_ERAT,MCE_ERAT_ERROR_MULTIHIT,
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_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, },
{ 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 void mce_get_ierror(struct pt_regs *regs,
const struct mce_ierror_table table[],
struct mce_error_info *mce_err, uint64_t *addr)
{
uint64_t srr1 = regs->msr;
int i;
*addr = 0;
for (i = 0; table[i].srr1_mask; i++) {
if ((srr1 & table[i].srr1_mask) != table[i].srr1_value)
continue;
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;
}
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(struct pt_regs *regs,
const struct mce_derror_table table[],
struct mce_error_info *mce_err, uint64_t *addr)
{
uint64_t dsisr = regs->dsisr;
int i;
*addr = 0;
for (i = 0; table[i].dsisr_value; i++) {
if (!(dsisr & table[i].dsisr_value))
continue;
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;
return;
}
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_ue_error(struct pt_regs *regs)
{
long handled = 0;
/*
* On specific SCOM read via MMIO we may get a machine check
* exception with SRR0 pointing inside opal. If that is the
* case OPAL may have recovery address to re-read SCOM data in
* different way and hence we can recover from this MC.
*/
if (ppc_md.mce_check_early_recovery) {
if (ppc_md.mce_check_early_recovery(regs))
handled = 1;
}
return handled;
}
static long mce_handle_derror_p7(uint64_t dsisr)
{
return mce_handle_flush_derrors(dsisr,
@ -276,100 +592,18 @@ static long mce_handle_ierror_p7(uint64_t srr1)
}
}
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;
}
}
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;
}
}
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;
}
}
static long mce_handle_ue_error(struct pt_regs *regs)
{
long handled = 0;
/*
* On specific SCOM read via MMIO we may get a machine check
* exception with SRR0 pointing inside opal. If that is the
* case OPAL may have recovery address to re-read SCOM data in
* different way and hence we can recover from this MC.
*/
if (ppc_md.mce_check_early_recovery) {
if (ppc_md.mce_check_early_recovery(regs))
handled = 1;
}
return handled;
}
long __machine_check_early_realmode_p7(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;
/* P7 DD1 leaves top bits of DSISR undefined */
regs->dsisr &= 0x0000ffff;
/*
* Handle memory errors depending whether this was a load/store or
* ifetch exception. Also, populate the mce error_type and
@ -378,12 +612,12 @@ long __machine_check_early_realmode_p7(struct pt_regs *regs)
*/
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;
mce_get_derror(regs, mce_p7_derror_table,
&mce_error_info, &addr);
} else {
handled = mce_handle_ierror_p7(srr1);
mce_get_ierror_p7(&mce_error_info, srr1);
addr = regs->nip;
mce_get_ierror(regs, mce_p7_ierror_table,
&mce_error_info, &addr);
}
/* Handle UE error. */
@ -394,24 +628,6 @@ long __machine_check_early_realmode_p7(struct pt_regs *regs)
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)
{
switch (P7_SRR1_MC_IFETCH(srr1)) {
@ -441,20 +657,17 @@ long __machine_check_early_realmode_p8(struct pt_regs *regs)
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;
mce_get_derror(regs, mce_p8_derror_table,
&mce_error_info, &addr);
} else {
handled = mce_handle_ierror_p8(srr1);
mce_get_ierror_p8(&mce_error_info, srr1);
addr = regs->nip;
mce_get_ierror(regs, mce_p8_ierror_table,
&mce_error_info, &addr);
}
/* Handle UE error. */
@ -495,138 +708,6 @@ static int mce_handle_ierror_p9(struct pt_regs *regs)
}
}
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)
{
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;
}
}
long __machine_check_early_realmode_p9(struct pt_regs *regs)
{
uint64_t nip, addr;
@ -637,10 +718,12 @@ long __machine_check_early_realmode_p9(struct pt_regs *regs)
if (P9_SRR1_MC_LOADSTORE(regs->msr)) {
handled = mce_handle_derror_p9(regs);
mce_get_derror_p9(regs, &mce_error_info, &addr);
mce_get_derror(regs, mce_p9_derror_table,
&mce_error_info, &addr);
} else {
handled = mce_handle_ierror_p9(regs);
mce_get_ierror_p9(regs, &mce_error_info, &addr);
mce_get_ierror(regs, mce_p9_ierror_table,
&mce_error_info, &addr);
}
/* Handle UE error. */