static void amd_pmu_cpu_starting(int cpu)
{
struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
struct amd_nb *nb;
int i, nb_id;
if (boot_cpu_data.x86_max_cores < 2)
return;
nb_id = amd_get_nb_id(cpu);
WARN_ON_ONCE(nb_id == BAD_APICID);
raw_spin_lock(&amd_nb_lock);
for_each_online_cpu(i) {
nb = per_cpu(cpu_hw_events, i).amd_nb;
if (WARN_ON_ONCE(!nb))
continue;
if (nb->nb_id == nb_id) {
kfree(cpuc->amd_nb);
cpuc->amd_nb = nb;
break;
}
}
cpuc->amd_nb->nb_id = nb_id;
cpuc->amd_nb->refcnt++;
raw_spin_unlock(&amd_nb_lock);
}
static void amd_pmu_cpu_starting(int cpu)
{
struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
struct amd_nb *nb;
int i, nb_id;
cpuc->perf_ctr_virt_mask = AMD_PERFMON_EVENTSEL_HOSTONLY;
if (boot_cpu_data.x86_max_cores < 2 || boot_cpu_data.x86 == 0x15)
return;
nb_id = amd_get_nb_id(cpu);
WARN_ON_ONCE(nb_id == BAD_APICID);
for_each_online_cpu(i) {
nb = per_cpu(cpu_hw_events, i).amd_nb;
if (WARN_ON_ONCE(!nb))
continue;
if (nb->nb_id == nb_id) {
cpuc->kfree_on_online = cpuc->amd_nb;
cpuc->amd_nb = nb;
break;
}
}
cpuc->amd_nb->nb_id = nb_id;
cpuc->amd_nb->refcnt++;
}
static void decode_mc4_mce(struct mce *m)
{
struct cpuinfo_x86 *c = &boot_cpu_data;
int node_id = amd_get_nb_id(m->extcpu);
u16 ec = EC(m->status);
u8 xec = XEC(m->status, 0x1f);
u8 offset = 0;
pr_emerg(HW_ERR "MC4 Error (node %d): ", node_id);
switch (xec) {
case 0x0 ... 0xe:
/* special handling for DRAM ECCs */
if (xec == 0x0 || xec == 0x8) {
/* no ECCs on F11h */
if (c->x86 == 0x11)
goto wrong_mc4_mce;
pr_cont("%s.\n", mc4_mce_desc[xec]);
if (nb_bus_decoder)
nb_bus_decoder(node_id, m);
return;
}
break;
case 0xf:
if (TLB_ERROR(ec))
pr_cont("GART Table Walk data error.\n");
else if (BUS_ERROR(ec))
pr_cont("DMA Exclusion Vector Table Walk error.\n");
else
goto wrong_mc4_mce;
return;
case 0x19:
if (boot_cpu_data.x86 == 0x15)
pr_cont("Compute Unit Data Error.\n");
else
goto wrong_mc4_mce;
return;
case 0x1c ... 0x1f:
offset = 13;
break;
default:
goto wrong_mc4_mce;
}
pr_cont("%s.\n", mc4_mce_desc[xec - offset]);
return;
wrong_mc4_mce:
pr_emerg(HW_ERR "Corrupted MC4 MCE info?\n");
}
int amd_get_subcaches(int cpu)
{
struct pci_dev *link = node_to_amd_nb(amd_get_nb_id(cpu))->link;
unsigned int mask;
int cuid = 0;
if (!amd_nb_has_feature(AMD_NB_L3_PARTITIONING))
return 0;
pci_read_config_dword(link, 0x1d4, &mask);
#ifdef CONFIG_SMP
cuid = cpu_data(cpu).compute_unit_id;
#endif
return (mask >> (4 * cuid)) & 0xf;
}
void amd_decode_nb_mce(struct mce *m)
{
struct cpuinfo_x86 *c = &boot_cpu_data;
int node_id = amd_get_nb_id(m->extcpu);
u16 ec = EC(m->status);
u8 xec = XEC(m->status, 0x1f);
pr_emerg(HW_ERR "Northbridge Error (node %d): ", node_id);
switch (xec) {
case 0x2:
pr_cont("Sync error (sync packets on HT link detected).\n");
return;
case 0x3:
pr_cont("HT Master abort.\n");
return;
case 0x4:
pr_cont("HT Target abort.\n");
return;
case 0x7:
pr_cont("NB Watchdog timeout.\n");
return;
case 0x9:
pr_cont("SVM DMA Exclusion Vector error.\n");
return;
default:
break;
}
if (!fam_ops->nb_mce(ec, xec))
goto wrong_nb_mce;
if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x15)
if ((xec == 0x8 || xec == 0x0) && nb_bus_decoder)
nb_bus_decoder(node_id, m);
return;
wrong_nb_mce:
pr_emerg(HW_ERR "Corrupted NB MCE info?\n");
}
static void amd_pmu_cpu_online(int cpu)
{
struct cpu_hw_events *cpu1, *cpu2;
struct amd_nb *nb = NULL;
int i, nb_id;
if (boot_cpu_data.x86_max_cores < 2)
return;
/*
* function may be called too early in the
* boot process, in which case nb_id is bogus
*/
nb_id = amd_get_nb_id(cpu);
if (nb_id == BAD_APICID)
return;
cpu1 = &per_cpu(cpu_hw_events, cpu);
cpu1->amd_nb = NULL;
raw_spin_lock(&amd_nb_lock);
for_each_online_cpu(i) {
cpu2 = &per_cpu(cpu_hw_events, i);
nb = cpu2->amd_nb;
if (!nb)
continue;
if (nb->nb_id == nb_id)
goto found;
}
nb = amd_alloc_nb(cpu, nb_id);
if (!nb) {
pr_err("perf_events: failed NB allocation for CPU%d\n", cpu);
raw_spin_unlock(&amd_nb_lock);
return;
}
found:
nb->refcnt++;
cpu1->amd_nb = nb;
raw_spin_unlock(&amd_nb_lock);
}
int amd_set_subcaches(int cpu, int mask)
{
static unsigned int reset, ban;
struct amd_northbridge *nb = node_to_amd_nb(amd_get_nb_id(cpu));
unsigned int reg;
int cuid = 0;
if (!amd_nb_has_feature(AMD_NB_L3_PARTITIONING) || mask > 0xf)
return -EINVAL;
/* if necessary, collect reset state of L3 partitioning and BAN mode */
if (reset == 0) {
pci_read_config_dword(nb->link, 0x1d4, &reset);
pci_read_config_dword(nb->misc, 0x1b8, &ban);
ban &= 0x180000;
}
/* deactivate BAN mode if any subcaches are to be disabled */
if (mask != 0xf) {
pci_read_config_dword(nb->misc, 0x1b8, ®);
pci_write_config_dword(nb->misc, 0x1b8, reg & ~0x180000);
}
#ifdef CONFIG_SMP
cuid = cpu_data(cpu).compute_unit_id;
#endif
mask <<= 4 * cuid;
mask |= (0xf ^ (1 << cuid)) << 26;
pci_write_config_dword(nb->link, 0x1d4, mask);
/* reset BAN mode if L3 partitioning returned to reset state */
pci_read_config_dword(nb->link, 0x1d4, ®);
if (reg == reset) {
pci_read_config_dword(nb->misc, 0x1b8, ®);
reg &= ~0x180000;
pci_write_config_dword(nb->misc, 0x1b8, reg | ban);
}
return 0;
}
