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Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
Pull x86 cpu updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Add support for the "Dhyana" x86 CPUs by Hygon: these are licensed
     based on the AMD Zen architecture, and are built and sold in China,
     for domestic datacenter use. The code is pretty close to AMD
     support, mostly with a few quirks and enumeration differences. (Pu
     Wen)

   - Enable CPUID support on Cyrix 6x86/6x86L processors"

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/cpupower: Add Hygon Dhyana support
  cpufreq: Add Hygon Dhyana support
  ACPI: Add Hygon Dhyana support
  x86/xen: Add Hygon Dhyana support to Xen
  x86/kvm: Add Hygon Dhyana support to KVM
  x86/mce: Add Hygon Dhyana support to the MCA infrastructure
  x86/bugs: Add Hygon Dhyana to the respective mitigation machinery
  x86/apic: Add Hygon Dhyana support
  x86/pci, x86/amd_nb: Add Hygon Dhyana support to PCI and northbridge
  x86/amd_nb: Check vendor in AMD-only functions
  x86/alternative: Init ideal_nops for Hygon Dhyana
  x86/events: Add Hygon Dhyana support to PMU infrastructure
  x86/smpboot: Do not use BSP INIT delay and MWAIT to idle on Dhyana
  x86/cpu/mtrr: Support TOP_MEM2 and get MTRR number
  x86/cpu: Get cache info and setup cache cpumap for Hygon Dhyana
  x86/cpu: Create Hygon Dhyana architecture support file
  x86/CPU: Change query logic so CPUID is enabled before testing
  x86/CPU: Use correct macros for Cyrix calls
This commit is contained in:
Linus Torvalds 2018-10-23 16:16:40 +01:00
commit fec98069fb
42 changed files with 635 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
MAINTAINERS
View File

@ -6787,6 +6787,12 @@ S: Maintained
F: mm/memory-failure.c
F: mm/hwpoison-inject.c
HYGON PROCESSOR SUPPORT
M: Pu Wen <puwen@hygon.cn>
L: linux-kernel@vger.kernel.org
S: Maintained
F: arch/x86/kernel/cpu/hygon.c
Hyper-V CORE AND DRIVERS
M: "K. Y. Srinivasan" <kys@microsoft.com>
M: Haiyang Zhang <haiyangz@microsoft.com>

14
arch/x86/Kconfig.cpu
View File

@ -426,6 +426,20 @@ config CPU_SUP_AMD
If unsure, say N.
config CPU_SUP_HYGON
default y
bool "Support Hygon processors" if PROCESSOR_SELECT
select CPU_SUP_AMD
help
This enables detection, tunings and quirks for Hygon processors
You need this enabled if you want your kernel to run on an
Hygon CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on an Hygon
CPU might render the kernel unbootable.
If unsure, say N.
config CPU_SUP_CENTAUR
default y
bool "Support Centaur processors" if PROCESSOR_SELECT

4
arch/x86/events/amd/core.c
View File

@ -669,6 +669,10 @@ static int __init amd_core_pmu_init(void)
* We fallback to using default amd_get_event_constraints.
*/
break;
case 0x18:
pr_cont("Fam18h ");
/* Using default amd_get_event_constraints. */
break;
default:
pr_err("core perfctr but no constraints; unknown hardware!\n");
return -ENODEV;

20
arch/x86/events/amd/uncore.c
View File

@ -515,17 +515,19 @@ static int __init amd_uncore_init(void)
{
int ret = -ENODEV;
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON)
return -ENODEV;
if (!boot_cpu_has(X86_FEATURE_TOPOEXT))
return -ENODEV;
if (boot_cpu_data.x86 == 0x17) {
if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18) {
/*
* For F17h, the Northbridge counters are repurposed as Data
* Fabric counters. Also, L3 counters are supported too. The PMUs
* are exported based on family as either L2 or L3 and NB or DF.
* For F17h or F18h, the Northbridge counters are
* repurposed as Data Fabric counters. Also, L3
* counters are supported too. The PMUs are exported
* based on family as either L2 or L3 and NB or DF.
*/
num_counters_nb = NUM_COUNTERS_NB;
num_counters_llc = NUM_COUNTERS_L3;
@ -557,7 +559,9 @@ static int __init amd_uncore_init(void)
if (ret)
goto fail_nb;
pr_info("AMD NB counters detected\n");
pr_info("%s NB counters detected\n",
boot_cpu_data.x86_vendor == X86_VENDOR_HYGON ?
"HYGON" : "AMD");
ret = 0;
}
@ -571,7 +575,9 @@ static int __init amd_uncore_init(void)
if (ret)
goto fail_llc;
pr_info("AMD LLC counters detected\n");
pr_info("%s LLC counters detected\n",
boot_cpu_data.x86_vendor == X86_VENDOR_HYGON ?
"HYGON" : "AMD");
ret = 0;
}

4
arch/x86/events/core.c
View File

@ -1797,6 +1797,10 @@ static int __init init_hw_perf_events(void)
case X86_VENDOR_AMD:
err = amd_pmu_init();
break;
case X86_VENDOR_HYGON:
err = amd_pmu_init();
x86_pmu.name = "HYGON";
break;
default:
err = -ENOTSUPP;
}

3
arch/x86/include/asm/amd_nb.h
View File

@ -103,6 +103,9 @@ static inline u16 amd_pci_dev_to_node_id(struct pci_dev *pdev)
static inline bool amd_gart_present(void)
{
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
return false;
/* GART present only on Fam15h, upto model 0fh */
if (boot_cpu_data.x86 == 0xf || boot_cpu_data.x86 == 0x10 ||
(boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model < 0x10))

1
arch/x86/include/asm/cacheinfo.h
View File

@ -3,5 +3,6 @@
#define _ASM_X86_CACHEINFO_H
void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, int cpu, u8 node_id);
void cacheinfo_hygon_init_llc_id(struct cpuinfo_x86 *c, int cpu, u8 node_id);
#endif /* _ASM_X86_CACHEINFO_H */

4
arch/x86/include/asm/kvm_emulate.h
View File

@ -364,6 +364,10 @@ struct x86_emulate_ctxt {
#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx 0x21726574
#define X86EMUL_CPUID_VENDOR_AMDisbetterI_edx 0x74656273
#define X86EMUL_CPUID_VENDOR_HygonGenuine_ebx 0x6f677948
#define X86EMUL_CPUID_VENDOR_HygonGenuine_ecx 0x656e6975
#define X86EMUL_CPUID_VENDOR_HygonGenuine_edx 0x6e65476e
#define X86EMUL_CPUID_VENDOR_GenuineIntel_ebx 0x756e6547
#define X86EMUL_CPUID_VENDOR_GenuineIntel_ecx 0x6c65746e
#define X86EMUL_CPUID_VENDOR_GenuineIntel_edx 0x49656e69

2
arch/x86/include/asm/mce.h
View File

@ -217,6 +217,8 @@ static inline void mce_amd_feature_init(struct cpuinfo_x86 *c) { }
static inline int umc_normaddr_to_sysaddr(u64 norm_addr, u16 nid, u8 umc, u64 *sys_addr) { return -EINVAL; };
#endif
static inline void mce_hygon_feature_init(struct cpuinfo_x86 *c) { return mce_amd_feature_init(c); }
int mce_available(struct cpuinfo_x86 *c);
bool mce_is_memory_error(struct mce *m);

3
arch/x86/include/asm/processor.h
View File

@ -155,7 +155,8 @@ enum cpuid_regs_idx {
#define X86_VENDOR_CENTAUR 5
#define X86_VENDOR_TRANSMETA 7
#define X86_VENDOR_NSC 8
#define X86_VENDOR_NUM 9
#define X86_VENDOR_HYGON 9
#define X86_VENDOR_NUM 10
#define X86_VENDOR_UNKNOWN 0xff

5
arch/x86/include/asm/virtext.h
View File

@ -83,9 +83,10 @@ static inline void cpu_emergency_vmxoff(void)
*/
static inline int cpu_has_svm(const char **msg)
{
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) {
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON) {
if (msg)
*msg = "not amd";
*msg = "not amd or hygon";
return 0;
}

4
arch/x86/kernel/alternative.c
View File

@ -222,6 +222,10 @@ void __init arch_init_ideal_nops(void)
}
break;
case X86_VENDOR_HYGON:
ideal_nops = p6_nops;
return;
case X86_VENDOR_AMD:
if (boot_cpu_data.x86 > 0xf) {
ideal_nops = p6_nops;

49
arch/x86/kernel/amd_nb.c
View File

@ -61,6 +61,21 @@ static const struct pci_device_id amd_nb_link_ids[] = {
{}
};
static const struct pci_device_id hygon_root_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_HYGON, PCI_DEVICE_ID_AMD_17H_ROOT) },
{}
};
const struct pci_device_id hygon_nb_misc_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_HYGON, PCI_DEVICE_ID_AMD_17H_DF_F3) },
{}
};
static const struct pci_device_id hygon_nb_link_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_HYGON, PCI_DEVICE_ID_AMD_17H_DF_F4) },
{}
};
const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[] __initconst = {
{ 0x00, 0x18, 0x20 },
{ 0xff, 0x00, 0x20 },
@ -194,15 +209,24 @@ EXPORT_SYMBOL_GPL(amd_df_indirect_read);
int amd_cache_northbridges(void)
{
u16 i = 0;
struct amd_northbridge *nb;
const struct pci_device_id *misc_ids = amd_nb_misc_ids;
const struct pci_device_id *link_ids = amd_nb_link_ids;
const struct pci_device_id *root_ids = amd_root_ids;
struct pci_dev *root, *misc, *link;
struct amd_northbridge *nb;
u16 i = 0;
if (amd_northbridges.num)
return 0;
if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) {
root_ids = hygon_root_ids;
misc_ids = hygon_nb_misc_ids;
link_ids = hygon_nb_link_ids;
}
misc = NULL;
while ((misc = next_northbridge(misc, amd_nb_misc_ids)) != NULL)
while ((misc = next_northbridge(misc, misc_ids)) != NULL)
i++;
if (!i)
@ -218,11 +242,11 @@ int amd_cache_northbridges(void)
link = misc = root = NULL;
for (i = 0; i != amd_northbridges.num; i++) {
node_to_amd_nb(i)->root = root =
next_northbridge(root, amd_root_ids);
next_northbridge(root, root_ids);
node_to_amd_nb(i)->misc = misc =
next_northbridge(misc, amd_nb_misc_ids);
next_northbridge(misc, misc_ids);
node_to_amd_nb(i)->link = link =
next_northbridge(link, amd_nb_link_ids);
next_northbridge(link, link_ids);
}
if (amd_gart_present())
@ -261,11 +285,19 @@ EXPORT_SYMBOL_GPL(amd_cache_northbridges);
*/
bool __init early_is_amd_nb(u32 device)
{
const struct pci_device_id *misc_ids = amd_nb_misc_ids;
const struct pci_device_id *id;
u32 vendor = device & 0xffff;
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON)
return false;
if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
misc_ids = hygon_nb_misc_ids;
device >>= 16;
for (id = amd_nb_misc_ids; id->vendor; id++)
for (id = misc_ids; id->vendor; id++)
if (vendor == id->vendor && device == id->device)
return true;
return false;
@ -277,7 +309,8 @@ struct resource *amd_get_mmconfig_range(struct resource *res)
u64 base, msr;
unsigned int segn_busn_bits;
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON)
return NULL;
/* assume all cpus from fam10h have mmconfig */

7
arch/x86/kernel/apic/apic.c
View File

@ -224,6 +224,11 @@ static int modern_apic(void)
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
boot_cpu_data.x86 >= 0xf)
return 1;
/* Hygon systems use modern APIC */
if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
return 1;
return lapic_get_version() >= 0x14;
}
@ -1912,6 +1917,8 @@ static int __init detect_init_APIC(void)
(boot_cpu_data.x86 >= 15))
break;
goto no_apic;
case X86_VENDOR_HYGON:
break;
case X86_VENDOR_INTEL:
if (boot_cpu_data.x86 == 6 || boot_cpu_data.x86 == 15 ||
(boot_cpu_data.x86 == 5 && boot_cpu_has(X86_FEATURE_APIC)))

1
arch/x86/kernel/apic/probe_32.c
View File

@ -185,6 +185,7 @@ void __init default_setup_apic_routing(void)
break;
}
/* If P4 and above fall through */
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
def_to_bigsmp = 1;
}

1
arch/x86/kernel/cpu/Makefile
View File

@ -30,6 +30,7 @@ obj-$(CONFIG_X86_FEATURE_NAMES) += capflags.o powerflags.o
obj-$(CONFIG_CPU_SUP_INTEL) += intel.o intel_pconfig.o
obj-$(CONFIG_CPU_SUP_AMD) += amd.o
obj-$(CONFIG_CPU_SUP_HYGON) += hygon.o
obj-$(CONFIG_CPU_SUP_CYRIX_32) += cyrix.o
obj-$(CONFIG_CPU_SUP_CENTAUR) += centaur.o
obj-$(CONFIG_CPU_SUP_TRANSMETA_32) += transmeta.o

4
arch/x86/kernel/cpu/bugs.c
View File

@ -312,6 +312,7 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void)
}
if (cmd == SPECTRE_V2_CMD_RETPOLINE_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON &&
boot_cpu_data.x86_vendor != X86_VENDOR_AMD) {
pr_err("retpoline,amd selected but CPU is not AMD. Switching to AUTO select\n");
return SPECTRE_V2_CMD_AUTO;
@ -371,7 +372,8 @@ static void __init spectre_v2_select_mitigation(void)
return;
retpoline_auto:
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ||
boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) {
retpoline_amd:
if (!boot_cpu_has(X86_FEATURE_LFENCE_RDTSC)) {
pr_err("Spectre mitigation: LFENCE not serializing, switching to generic retpoline\n");

31
arch/x86/kernel/cpu/cacheinfo.c
View File

@ -602,6 +602,10 @@ cpuid4_cache_lookup_regs(int index, struct _cpuid4_info_regs *this_leaf)
else
amd_cpuid4(index, &eax, &ebx, &ecx);
amd_init_l3_cache(this_leaf, index);
} else if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) {
cpuid_count(0x8000001d, index, &eax.full,
&ebx.full, &ecx.full, &edx);
amd_init_l3_cache(this_leaf, index);
} else {
cpuid_count(4, index, &eax.full, &ebx.full, &ecx.full, &edx);
}
@ -625,7 +629,8 @@ static int find_num_cache_leaves(struct cpuinfo_x86 *c)
union _cpuid4_leaf_eax cache_eax;
int i = -1;
if (c->x86_vendor == X86_VENDOR_AMD)
if (c->x86_vendor == X86_VENDOR_AMD ||
c->x86_vendor == X86_VENDOR_HYGON)
op = 0x8000001d;
else
op = 4;
@ -678,6 +683,22 @@ void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, int cpu, u8 node_id)
}
}
void cacheinfo_hygon_init_llc_id(struct cpuinfo_x86 *c, int cpu, u8 node_id)
{
/*
* We may have multiple LLCs if L3 caches exist, so check if we
* have an L3 cache by looking at the L3 cache CPUID leaf.
*/
if (!cpuid_edx(0x80000006))
return;
/*
* LLC is at the core complex level.
* Core complex ID is ApicId[3] for these processors.
*/
per_cpu(cpu_llc_id, cpu) = c->apicid >> 3;
}
void init_amd_cacheinfo(struct cpuinfo_x86 *c)
{
@ -691,6 +712,11 @@ void init_amd_cacheinfo(struct cpuinfo_x86 *c)
}
}
void init_hygon_cacheinfo(struct cpuinfo_x86 *c)
{
num_cache_leaves = find_num_cache_leaves(c);
}
void init_intel_cacheinfo(struct cpuinfo_x86 *c)
{
/* Cache sizes */
@ -913,7 +939,8 @@ static void __cache_cpumap_setup(unsigned int cpu, int index,
int index_msb, i;
struct cpuinfo_x86 *c = &cpu_data(cpu);
if (c->x86_vendor == X86_VENDOR_AMD) {
if (c->x86_vendor == X86_VENDOR_AMD ||
c->x86_vendor == X86_VENDOR_HYGON) {
if (__cache_amd_cpumap_setup(cpu, index, base))
return;
}

5
arch/x86/kernel/cpu/common.c
View File

@ -963,6 +963,7 @@ static const __initconst struct x86_cpu_id cpu_no_speculation[] = {
static const __initconst struct x86_cpu_id cpu_no_meltdown[] = {
{ X86_VENDOR_AMD },
{ X86_VENDOR_HYGON },
{}
};
@ -1076,6 +1077,9 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
memset(&c->x86_capability, 0, sizeof c->x86_capability);
c->extended_cpuid_level = 0;
if (!have_cpuid_p())
identify_cpu_without_cpuid(c);
/* cyrix could have cpuid enabled via c_identify()*/
if (have_cpuid_p()) {
cpu_detect(c);
@ -1093,7 +1097,6 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
if (this_cpu->c_bsp_init)
this_cpu->c_bsp_init(c);
} else {
identify_cpu_without_cpuid(c);
setup_clear_cpu_cap(X86_FEATURE_CPUID);
}

1
arch/x86/kernel/cpu/cpu.h
View File

@ -54,6 +54,7 @@ extern u32 get_scattered_cpuid_leaf(unsigned int level,
enum cpuid_regs_idx reg);
extern void init_intel_cacheinfo(struct cpuinfo_x86 *c);
extern void init_amd_cacheinfo(struct cpuinfo_x86 *c);
extern void init_hygon_cacheinfo(struct cpuinfo_x86 *c);
extern void detect_num_cpu_cores(struct cpuinfo_x86 *c);
extern int detect_extended_topology_early(struct cpuinfo_x86 *c);

2
arch/x86/kernel/cpu/cyrix.c
View File

@ -437,7 +437,7 @@ static void cyrix_identify(struct cpuinfo_x86 *c)
/* enable MAPEN */
setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10);
/* enable cpuid */
setCx86_old(CX86_CCR4, getCx86_old(CX86_CCR4) | 0x80);
setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x80);
/* disable MAPEN */
setCx86(CX86_CCR3, ccr3);
local_irq_restore(flags);

408
arch/x86/kernel/cpu/hygon.c Normal file
View File

@ -0,0 +1,408 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Hygon Processor Support for Linux
*
* Copyright (C) 2018 Chengdu Haiguang IC Design Co., Ltd.
*
* Author: Pu Wen <puwen@hygon.cn>
*/
#include <linux/io.h>
#include <asm/cpu.h>
#include <asm/smp.h>
#include <asm/cacheinfo.h>
#include <asm/spec-ctrl.h>
#include <asm/delay.h>
#ifdef CONFIG_X86_64
# include <asm/set_memory.h>
#endif
#include "cpu.h"
/*
* nodes_per_socket: Stores the number of nodes per socket.
* Refer to CPUID Fn8000_001E_ECX Node Identifiers[10:8]
*/
static u32 nodes_per_socket = 1;
#ifdef CONFIG_NUMA
/*
* To workaround broken NUMA config. Read the comment in
* srat_detect_node().
*/
static int nearby_node(int apicid)
{
int i, node;
for (i = apicid - 1; i >= 0; i--) {
node = __apicid_to_node[i];
if (node != NUMA_NO_NODE && node_online(node))
return node;
}
for (i = apicid + 1; i < MAX_LOCAL_APIC; i++) {
node = __apicid_to_node[i];
if (node != NUMA_NO_NODE && node_online(node))
return node;
}
return first_node(node_online_map); /* Shouldn't happen */
}
#endif
static void hygon_get_topology_early(struct cpuinfo_x86 *c)
{
if (cpu_has(c, X86_FEATURE_TOPOEXT))
smp_num_siblings = ((cpuid_ebx(0x8000001e) >> 8) & 0xff) + 1;
}
/*
* Fixup core topology information for
* (1) Hygon multi-node processors
* Assumption: Number of cores in each internal node is the same.
* (2) Hygon processors supporting compute units
*/
static void hygon_get_topology(struct cpuinfo_x86 *c)
{
u8 node_id;
int cpu = smp_processor_id();
/* get information required for multi-node processors */
if (boot_cpu_has(X86_FEATURE_TOPOEXT)) {
int err;
u32 eax, ebx, ecx, edx;
cpuid(0x8000001e, &eax, &ebx, &ecx, &edx);
node_id = ecx & 0xff;
c->cpu_core_id = ebx & 0xff;
if (smp_num_siblings > 1)
c->x86_max_cores /= smp_num_siblings;
/*
* In case leaf B is available, use it to derive
* topology information.
*/
err = detect_extended_topology(c);
if (!err)
c->x86_coreid_bits = get_count_order(c->x86_max_cores);
cacheinfo_hygon_init_llc_id(c, cpu, node_id);
} else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) {
u64 value;
rdmsrl(MSR_FAM10H_NODE_ID, value);
node_id = value & 7;
per_cpu(cpu_llc_id, cpu) = node_id;
} else
return;
if (nodes_per_socket > 1)
set_cpu_cap(c, X86_FEATURE_AMD_DCM);
}
/*
* On Hygon setup the lower bits of the APIC id distinguish the cores.
* Assumes number of cores is a power of two.
*/
static void hygon_detect_cmp(struct cpuinfo_x86 *c)
{
unsigned int bits;
int cpu = smp_processor_id();
bits = c->x86_coreid_bits;
/* Low order bits define the core id (index of core in socket) */
c->cpu_core_id = c->initial_apicid & ((1 << bits)-1);
/* Convert the initial APIC ID into the socket ID */
c->phys_proc_id = c->initial_apicid >> bits;
/* use socket ID also for last level cache */
per_cpu(cpu_llc_id, cpu) = c->phys_proc_id;
}
static void srat_detect_node(struct cpuinfo_x86 *c)
{
#ifdef CONFIG_NUMA
int cpu = smp_processor_id();
int node;
unsigned int apicid = c->apicid;
node = numa_cpu_node(cpu);
if (node == NUMA_NO_NODE)
node = per_cpu(cpu_llc_id, cpu);
/*
* On multi-fabric platform (e.g. Numascale NumaChip) a
* platform-specific handler needs to be called to fixup some
* IDs of the CPU.
*/
if (x86_cpuinit.fixup_cpu_id)
x86_cpuinit.fixup_cpu_id(c, node);
if (!node_online(node)) {
/*
* Two possibilities here:
*
* - The CPU is missing memory and no node was created. In
* that case try picking one from a nearby CPU.
*
* - The APIC IDs differ from the HyperTransport node IDs.
* Assume they are all increased by a constant offset, but
* in the same order as the HT nodeids. If that doesn't
* result in a usable node fall back to the path for the
* previous case.
*
* This workaround operates directly on the mapping between
* APIC ID and NUMA node, assuming certain relationship
* between APIC ID, HT node ID and NUMA topology. As going
* through CPU mapping may alter the outcome, directly
* access __apicid_to_node[].
*/
int ht_nodeid = c->initial_apicid;
if (__apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
node = __apicid_to_node[ht_nodeid];
/* Pick a nearby node */
if (!node_online(node))
node = nearby_node(apicid);
}
numa_set_node(cpu, node);
#endif
}
static void early_init_hygon_mc(struct cpuinfo_x86 *c)
{
#ifdef CONFIG_SMP
unsigned int bits, ecx;
/* Multi core CPU? */
if (c->extended_cpuid_level < 0x80000008)
return;
ecx = cpuid_ecx(0x80000008);
c->x86_max_cores = (ecx & 0xff) + 1;
/* CPU telling us the core id bits shift? */
bits = (ecx >> 12) & 0xF;
/* Otherwise recompute */
if (bits == 0) {
while ((1 << bits) < c->x86_max_cores)
bits++;
}
c->x86_coreid_bits = bits;
#endif
}
static void bsp_init_hygon(struct cpuinfo_x86 *c)
{
#ifdef CONFIG_X86_64
unsigned long long tseg;
/*
* Split up direct mapping around the TSEG SMM area.
* Don't do it for gbpages because there seems very little
* benefit in doing so.
*/
if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg)) {
unsigned long pfn = tseg >> PAGE_SHIFT;
pr_debug("tseg: %010llx\n", tseg);
if (pfn_range_is_mapped(pfn, pfn + 1))
set_memory_4k((unsigned long)__va(tseg), 1);
}
#endif
if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {
u64 val;
rdmsrl(MSR_K7_HWCR, val);
if (!(val & BIT(24)))
pr_warn(FW_BUG "TSC doesn't count with P0 frequency!\n");
}
if (cpu_has(c, X86_FEATURE_MWAITX))
use_mwaitx_delay();
if (boot_cpu_has(X86_FEATURE_TOPOEXT)) {
u32 ecx;
ecx = cpuid_ecx(0x8000001e);
nodes_per_socket = ((ecx >> 8) & 7) + 1;
} else if (boot_cpu_has(X86_FEATURE_NODEID_MSR)) {
u64 value;
rdmsrl(MSR_FAM10H_NODE_ID, value);
nodes_per_socket = ((value >> 3) & 7) + 1;
}
if (!boot_cpu_has(X86_FEATURE_AMD_SSBD) &&
!boot_cpu_has(X86_FEATURE_VIRT_SSBD)) {
/*
* Try to cache the base value so further operations can
* avoid RMW. If that faults, do not enable SSBD.
*/
if (!rdmsrl_safe(MSR_AMD64_LS_CFG, &x86_amd_ls_cfg_base)) {
setup_force_cpu_cap(X86_FEATURE_LS_CFG_SSBD);
setup_force_cpu_cap(X86_FEATURE_SSBD);
x86_amd_ls_cfg_ssbd_mask = 1ULL << 10;
}
}
}
static void early_init_hygon(struct cpuinfo_x86 *c)
{
u32 dummy;
early_init_hygon_mc(c);
set_cpu_cap(c, X86_FEATURE_K8);
rdmsr_safe(MSR_AMD64_PATCH_LEVEL, &c->microcode, &dummy);
/*
* c->x86_power is 8000_0007 edx. Bit 8 is TSC runs at constant rate
* with P/T states and does not stop in deep C-states
*/
if (c->x86_power & (1 << 8)) {
set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC);
}
/* Bit 12 of 8000_0007 edx is accumulated power mechanism. */
if (c->x86_power & BIT(12))
set_cpu_cap(c, X86_FEATURE_ACC_POWER);
#ifdef CONFIG_X86_64
set_cpu_cap(c, X86_FEATURE_SYSCALL32);
#endif
#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_PCI)
/*
* ApicID can always be treated as an 8-bit value for Hygon APIC So, we
* can safely set X86_FEATURE_EXTD_APICID unconditionally.
*/
if (boot_cpu_has(X86_FEATURE_APIC))
set_cpu_cap(c, X86_FEATURE_EXTD_APICID);
#endif
/*
* This is only needed to tell the kernel whether to use VMCALL
* and VMMCALL. VMMCALL is never executed except under virt, so
* we can set it unconditionally.
*/
set_cpu_cap(c, X86_FEATURE_VMMCALL);
hygon_get_topology_early(c);
}
static void init_hygon(struct cpuinfo_x86 *c)
{
early_init_hygon(c);
/*
* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
* 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway
*/
clear_cpu_cap(c, 0*32+31);
set_cpu_cap(c, X86_FEATURE_REP_GOOD);
/* get apicid instead of initial apic id from cpuid */
c->apicid = hard_smp_processor_id();
set_cpu_cap(c, X86_FEATURE_ZEN);
set_cpu_cap(c, X86_FEATURE_CPB);
cpu_detect_cache_sizes(c);
hygon_detect_cmp(c);
hygon_get_topology(c);
srat_detect_node(c);
init_hygon_cacheinfo(c);
if (cpu_has(c, X86_FEATURE_XMM2)) {
unsigned long long val;
int ret;
/*
* A serializing LFENCE has less overhead than MFENCE, so
* use it for execution serialization. On families which
* don't have that MSR, LFENCE is already serializing.
* msr_set_bit() uses the safe accessors, too, even if the MSR
* is not present.
*/
msr_set_bit(MSR_F10H_DECFG,
MSR_F10H_DECFG_LFENCE_SERIALIZE_BIT);
/*
* Verify that the MSR write was successful (could be running
* under a hypervisor) and only then assume that LFENCE is
* serializing.
*/
ret = rdmsrl_safe(MSR_F10H_DECFG, &val);
if (!ret && (val & MSR_F10H_DECFG_LFENCE_SERIALIZE)) {
/* A serializing LFENCE stops RDTSC speculation */
set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
} else {
/* MFENCE stops RDTSC speculation */
set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC);
}
}
/*
* Hygon processors have APIC timer running in deep C states.
*/
set_cpu_cap(c, X86_FEATURE_ARAT);
/* Hygon CPUs don't reset SS attributes on SYSRET, Xen does. */
if (!cpu_has(c, X86_FEATURE_XENPV))
set_cpu_bug(c, X86_BUG_SYSRET_SS_ATTRS);
}
static void cpu_detect_tlb_hygon(struct cpuinfo_x86 *c)
{
u32 ebx, eax, ecx, edx;
u16 mask = 0xfff;
if (c->extended_cpuid_level < 0x80000006)
return;
cpuid(0x80000006, &eax, &ebx, &ecx, &edx);
tlb_lld_4k[ENTRIES] = (ebx >> 16) & mask;
tlb_lli_4k[ENTRIES] = ebx & mask;
/* Handle DTLB 2M and 4M sizes, fall back to L1 if L2 is disabled */
if (!((eax >> 16) & mask))
tlb_lld_2m[ENTRIES] = (cpuid_eax(0x80000005) >> 16) & 0xff;
else
tlb_lld_2m[ENTRIES] = (eax >> 16) & mask;
/* a 4M entry uses two 2M entries */
tlb_lld_4m[ENTRIES] = tlb_lld_2m[ENTRIES] >> 1;
/* Handle ITLB 2M and 4M sizes, fall back to L1 if L2 is disabled */
if (!(eax & mask)) {
cpuid(0x80000005, &eax, &ebx, &ecx, &edx);
tlb_lli_2m[ENTRIES] = eax & 0xff;
} else
tlb_lli_2m[ENTRIES] = eax & mask;
tlb_lli_4m[ENTRIES] = tlb_lli_2m[ENTRIES] >> 1;
}
static const struct cpu_dev hygon_cpu_dev = {
.c_vendor = "Hygon",
.c_ident = { "HygonGenuine" },
.c_early_init = early_init_hygon,
.c_detect_tlb = cpu_detect_tlb_hygon,
.c_bsp_init = bsp_init_hygon,
.c_init = init_hygon,
.c_x86_vendor = X86_VENDOR_HYGON,
};
cpu_dev_register(hygon_cpu_dev);

3
arch/x86/kernel/cpu/mcheck/mce-severity.c
View File

@ -336,7 +336,8 @@ int (*mce_severity)(struct mce *m, int tolerant, char **msg, bool is_excp) =
void __init mcheck_vendor_init_severity(void)
{
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ||
boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
mce_severity = mce_severity_amd;
}

20
arch/x86/kernel/cpu/mcheck/mce.c
View File

@ -270,7 +270,7 @@ static void print_mce(struct mce *m)
{
__print_mce(m);
if (m->cpuvendor != X86_VENDOR_AMD)
if (m->cpuvendor != X86_VENDOR_AMD && m->cpuvendor != X86_VENDOR_HYGON)
pr_emerg_ratelimited(HW_ERR "Run the above through 'mcelog --ascii'\n");
}
@ -508,9 +508,9 @@ static int mce_usable_address(struct mce *m)
bool mce_is_memory_error(struct mce *m)
{
if (m->cpuvendor == X86_VENDOR_AMD) {
if (m->cpuvendor == X86_VENDOR_AMD ||
m->cpuvendor == X86_VENDOR_HYGON) {
return amd_mce_is_memory_error(m);
} else if (m->cpuvendor == X86_VENDOR_INTEL) {
/*
* Intel SDM Volume 3B - 15.9.2 Compound Error Codes
@ -539,6 +539,9 @@ static bool mce_is_correctable(struct mce *m)
if (m->cpuvendor == X86_VENDOR_AMD && m->status & MCI_STATUS_DEFERRED)
return false;
if (m->cpuvendor == X86_VENDOR_HYGON && m->status & MCI_STATUS_DEFERRED)
return false;
if (m->status & MCI_STATUS_UC)
return false;
@ -1705,7 +1708,7 @@ static int __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
*/
static void __mcheck_cpu_init_early(struct cpuinfo_x86 *c)
{
if (c->x86_vendor == X86_VENDOR_AMD) {
if (c->x86_vendor == X86_VENDOR_AMD || c->x86_vendor == X86_VENDOR_HYGON) {
mce_flags.overflow_recov = !!cpu_has(c, X86_FEATURE_OVERFLOW_RECOV);
mce_flags.succor = !!cpu_has(c, X86_FEATURE_SUCCOR);
mce_flags.smca = !!cpu_has(c, X86_FEATURE_SMCA);
@ -1746,6 +1749,11 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
mce_amd_feature_init(c);
break;
}
case X86_VENDOR_HYGON:
mce_hygon_feature_init(c);
break;
case X86_VENDOR_CENTAUR:
mce_centaur_feature_init(c);
break;
@ -1971,12 +1979,14 @@ static void mce_disable_error_reporting(void)
static void vendor_disable_error_reporting(void)
{
/*
* Don't clear on Intel or AMD CPUs. Some of these MSRs are socket-wide.
* Don't clear on Intel or AMD or Hygon CPUs. Some of these MSRs
* are socket-wide.
* Disabling them for just a single offlined CPU is bad, since it will
* inhibit reporting for all shared resources on the socket like the
* last level cache (LLC), the integrated memory controller (iMC), etc.
*/
if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL ||
boot_cpu_data.x86_vendor == X86_VENDOR_HYGON ||
boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
return;

3
arch/x86/kernel/cpu/mtrr/cleanup.c
View File

@ -831,7 +831,8 @@ int __init amd_special_default_mtrr(void)
{
u32 l, h;
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON)
return 0;
if (boot_cpu_data.x86 < 0xf)
return 0;

2
arch/x86/kernel/cpu/mtrr/mtrr.c
View File

@ -127,7 +127,7 @@ static void __init set_num_var_ranges(void)
if (use_intel())
rdmsr(MSR_MTRRcap, config, dummy);
else if (is_cpu(AMD))
else if (is_cpu(AMD) || is_cpu(HYGON))
config = 2;
else if (is_cpu(CYRIX) || is_cpu(CENTAUR))
config = 8;

2
arch/x86/kernel/cpu/perfctr-watchdog.c
View File

@ -46,6 +46,7 @@ static inline unsigned int nmi_perfctr_msr_to_bit(unsigned int msr)
{
/* returns the bit offset of the performance counter register */
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
if (msr >= MSR_F15H_PERF_CTR)
return (msr - MSR_F15H_PERF_CTR) >> 1;
@ -74,6 +75,7 @@ static inline unsigned int nmi_evntsel_msr_to_bit(unsigned int msr)
{
/* returns the bit offset of the event selection register */
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
if (msr >= MSR_F15H_PERF_CTL)
return (msr - MSR_F15H_PERF_CTL) >> 1;

4
arch/x86/kernel/smpboot.c
View File

@ -676,6 +676,7 @@ static void __init smp_quirk_init_udelay(void)
/* if modern processor, use no delay */
if (((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 == 6)) ||
((boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) && (boot_cpu_data.x86 >= 0x18)) ||
((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) && (boot_cpu_data.x86 >= 0xF))) {
init_udelay = 0;
return;
@ -1592,7 +1593,8 @@ static inline void mwait_play_dead(void)
void *mwait_ptr;
int i;
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ||
boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
return;
if (!this_cpu_has(X86_FEATURE_MWAIT))
return;

11
arch/x86/kvm/emulate.c
View File

@ -2711,7 +2711,16 @@ static bool em_syscall_is_enabled(struct x86_emulate_ctxt *ctxt)
edx == X86EMUL_CPUID_VENDOR_AMDisbetterI_edx)
return true;
/* default: (not Intel, not AMD), apply Intel's stricter rules... */
/* Hygon ("HygonGenuine") */
if (ebx == X86EMUL_CPUID_VENDOR_HygonGenuine_ebx &&
ecx == X86EMUL_CPUID_VENDOR_HygonGenuine_ecx &&
edx == X86EMUL_CPUID_VENDOR_HygonGenuine_edx)
return true;
/*
* default: (not Intel, not AMD, not Hygon), apply Intel's
* stricter rules...
*/
return false;
}

6
arch/x86/pci/amd_bus.c
View File

@ -93,7 +93,8 @@ static int __init early_root_info_init(void)
vendor = id & 0xffff;
device = (id>>16) & 0xffff;
if (vendor != PCI_VENDOR_ID_AMD)
if (vendor != PCI_VENDOR_ID_AMD &&
vendor != PCI_VENDOR_ID_HYGON)
continue;
if (hb_probes[i].device == device) {
@ -390,7 +391,8 @@ static int __init pci_io_ecs_init(void)
static int __init amd_postcore_init(void)
{
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON)
return 0;
early_root_info_init();

12
arch/x86/xen/pmu.c
View File

@ -91,6 +91,12 @@ static void xen_pmu_arch_init(void)
k7_counters_mirrored = 0;
break;
}
} else if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) {
amd_num_counters = F10H_NUM_COUNTERS;
amd_counters_base = MSR_K7_PERFCTR0;
amd_ctrls_base = MSR_K7_EVNTSEL0;
amd_msr_step = 1;
k7_counters_mirrored = 0;
} else {
uint32_t eax, ebx, ecx, edx;
@ -286,7 +292,7 @@ static bool xen_amd_pmu_emulate(unsigned int msr, u64 *val, bool is_read)
bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err)
{
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) {
if (is_amd_pmu_msr(msr)) {
if (!xen_amd_pmu_emulate(msr, val, 1))
*val = native_read_msr_safe(msr, err);
@ -309,7 +315,7 @@ bool pmu_msr_write(unsigned int msr, uint32_t low, uint32_t high, int *err)
{
uint64_t val = ((uint64_t)high << 32) | low;
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) {
if (is_amd_pmu_msr(msr)) {
if (!xen_amd_pmu_emulate(msr, &val, 0))
*err = native_write_msr_safe(msr, low, high);
@ -380,7 +386,7 @@ static unsigned long long xen_intel_read_pmc(int counter)
unsigned long long xen_read_pmc(int counter)
{
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
return xen_amd_read_pmc(counter);
else
return xen_intel_read_pmc(counter);

1
drivers/acpi/acpi_pad.c
View File

@ -70,6 +70,7 @@ static void power_saving_mwait_init(void)
#if defined(CONFIG_X86)
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
case X86_VENDOR_INTEL:
/*

1
drivers/acpi/processor_idle.c
View File

@ -205,6 +205,7 @@ static void lapic_timer_state_broadcast(struct acpi_processor *pr,
static void tsc_check_state(int state)
{
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
case X86_VENDOR_INTEL:
case X86_VENDOR_CENTAUR:

5
drivers/cpufreq/acpi-cpufreq.c
View File

@ -61,6 +61,7 @@ enum {
#define INTEL_MSR_RANGE (0xffff)
#define AMD_MSR_RANGE (0x7)
#define HYGON_MSR_RANGE (0x7)
#define MSR_K7_HWCR_CPB_DIS (1ULL << 25)
@ -95,6 +96,7 @@ static bool boost_state(unsigned int cpu)
rdmsr_on_cpu(cpu, MSR_IA32_MISC_ENABLE, &lo, &hi);
msr = lo | ((u64)hi << 32);
return !(msr & MSR_IA32_MISC_ENABLE_TURBO_DISABLE);
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
rdmsr_on_cpu(cpu, MSR_K7_HWCR, &lo, &hi);
msr = lo | ((u64)hi << 32);
@ -113,6 +115,7 @@ static int boost_set_msr(bool enable)
msr_addr = MSR_IA32_MISC_ENABLE;
msr_mask = MSR_IA32_MISC_ENABLE_TURBO_DISABLE;
break;
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
msr_addr = MSR_K7_HWCR;
msr_mask = MSR_K7_HWCR_CPB_DIS;
@ -225,6 +228,8 @@ static unsigned extract_msr(struct cpufreq_policy *policy, u32 msr)
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
msr &= AMD_MSR_RANGE;
else if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
msr &= HYGON_MSR_RANGE;
else
msr &= INTEL_MSR_RANGE;

9
drivers/cpufreq/amd_freq_sensitivity.c
View File

@ -111,11 +111,16 @@ static int __init amd_freq_sensitivity_init(void)
{
u64 val;
struct pci_dev *pcidev;
unsigned int pci_vendor;
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
pci_vendor = PCI_VENDOR_ID_AMD;
else if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
pci_vendor = PCI_VENDOR_ID_HYGON;
else
return -ENODEV;
pcidev = pci_get_device(PCI_VENDOR_ID_AMD,
pcidev = pci_get_device(pci_vendor,
PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
if (!pcidev) {

2
include/linux/pci_ids.h
View File

@ -2565,6 +2565,8 @@
#define PCI_VENDOR_ID_AMAZON 0x1d0f
#define PCI_VENDOR_ID_HYGON 0x1d94
#define PCI_VENDOR_ID_TEKRAM 0x1de1
#define PCI_DEVICE_ID_TEKRAM_DC290 0xdc29

6
tools/power/cpupower/utils/cpufreq-info.c
View File

@ -170,6 +170,7 @@ static int get_boost_mode(unsigned int cpu)
unsigned long pstates[MAX_HW_PSTATES] = {0,};
if (cpupower_cpu_info.vendor != X86_VENDOR_AMD &&
cpupower_cpu_info.vendor != X86_VENDOR_HYGON &&
cpupower_cpu_info.vendor != X86_VENDOR_INTEL)
return 0;
@ -190,8 +191,9 @@ static int get_boost_mode(unsigned int cpu)
printf(_(" Supported: %s\n"), support ? _("yes") : _("no"));
printf(_(" Active: %s\n"), active ? _("yes") : _("no"));
if (cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.family >= 0x10) {
if ((cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.family >= 0x10) ||
cpupower_cpu_info.vendor == X86_VENDOR_HYGON) {
ret = decode_pstates(cpu, cpupower_cpu_info.family, b_states,
pstates, &pstate_no);
if (ret)

4
tools/power/cpupower/utils/helpers/amd.c
View File

@ -45,7 +45,7 @@ static int get_did(int family, union msr_pstate pstate)
if (family == 0x12)
t = pstate.val & 0xf;
else if (family == 0x17)
else if (family == 0x17 || family == 0x18)
t = pstate.fam17h_bits.did;
else
t = pstate.bits.did;
@ -59,7 +59,7 @@ static int get_cof(int family, union msr_pstate pstate)
int fid, did, cof;
did = get_did(family, pstate);
if (family == 0x17) {
if (family == 0x17 || family == 0x18) {
fid = pstate.fam17h_bits.fid;
cof = 200 * fid / did;
} else {

8
tools/power/cpupower/utils/helpers/cpuid.c
View File

@ -8,7 +8,7 @@
#include "helpers/helpers.h"
static const char *cpu_vendor_table[X86_VENDOR_MAX] = {
"Unknown", "GenuineIntel", "AuthenticAMD",
"Unknown", "GenuineIntel", "AuthenticAMD", "HygonGenuine",
};
#if defined(__i386__) || defined(__x86_64__)
@ -109,6 +109,7 @@ int get_cpu_info(struct cpupower_cpu_info *cpu_info)
fclose(fp);
/* Get some useful CPU capabilities from cpuid */
if (cpu_info->vendor != X86_VENDOR_AMD &&
cpu_info->vendor != X86_VENDOR_HYGON &&
cpu_info->vendor != X86_VENDOR_INTEL)
return ret;
@ -124,8 +125,9 @@ int get_cpu_info(struct cpupower_cpu_info *cpu_info)
if (cpuid_level >= 6 && (cpuid_ecx(6) & 0x1))
cpu_info->caps |= CPUPOWER_CAP_APERF;
/* AMD Boost state enable/disable register */
if (cpu_info->vendor == X86_VENDOR_AMD) {
/* AMD or Hygon Boost state enable/disable register */
if (cpu_info->vendor == X86_VENDOR_AMD ||
cpu_info->vendor == X86_VENDOR_HYGON) {
if (ext_cpuid_level >= 0x80000007 &&
(cpuid_edx(0x80000007) & (1 << 9)))
cpu_info->caps |= CPUPOWER_CAP_AMD_CBP;

2
tools/power/cpupower/utils/helpers/helpers.h
View File

@ -61,7 +61,7 @@ extern int be_verbose;
/* cpuid and cpuinfo helpers **************************/
enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,
X86_VENDOR_AMD, X86_VENDOR_MAX};
X86_VENDOR_AMD, X86_VENDOR_HYGON, X86_VENDOR_MAX};
#define CPUPOWER_CAP_INV_TSC 0x00000001
#define CPUPOWER_CAP_APERF 0x00000002

2
tools/power/cpupower/utils/helpers/misc.c
View File

@ -26,7 +26,7 @@ int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
* has Hardware determined variable increments instead.
*/
if (cpu_info.family == 0x17) {
if (cpu_info.family == 0x17 || cpu_info.family == 0x18) {
if (!read_msr(cpu, MSR_AMD_HWCR, &val)) {
if (!(val & CPUPOWER_AMD_CPBDIS))
*active = 1;

3
tools/power/cpupower/utils/idle_monitor/mperf_monitor.c
View File

@ -241,7 +241,8 @@ static int init_maxfreq_mode(void)
if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_INV_TSC))
goto use_sysfs;
if (cpupower_cpu_info.vendor == X86_VENDOR_AMD) {
if (cpupower_cpu_info.vendor == X86_VENDOR_AMD ||
cpupower_cpu_info.vendor == X86_VENDOR_HYGON) {
/* MSR_AMD_HWCR tells us whether TSC runs at P0/mperf
* freq.
* A test whether hwcr is accessable/available would be: