swh:1:snp:77163734605b0ec556b01d897b7bb4a7e30d46b6
Tip revision: 8bb7eca972ad531c9b149c0a51ab43a417385813 authored by Linus Torvalds on 31 October 2021, 20:53:10 UTC
Linux 5.15
Linux 5.15
Tip revision: 8bb7eca
uncore.h
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/slab.h>
#include <linux/pci.h>
#include <asm/apicdef.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/perf_event.h>
#include "../perf_event.h"
#define UNCORE_PMU_NAME_LEN 32
#define UNCORE_PMU_HRTIMER_INTERVAL (60LL * NSEC_PER_SEC)
#define UNCORE_SNB_IMC_HRTIMER_INTERVAL (5ULL * NSEC_PER_SEC)
#define UNCORE_FIXED_EVENT 0xff
#define UNCORE_PMC_IDX_MAX_GENERIC 8
#define UNCORE_PMC_IDX_MAX_FIXED 1
#define UNCORE_PMC_IDX_MAX_FREERUNNING 1
#define UNCORE_PMC_IDX_FIXED UNCORE_PMC_IDX_MAX_GENERIC
#define UNCORE_PMC_IDX_FREERUNNING (UNCORE_PMC_IDX_FIXED + \
UNCORE_PMC_IDX_MAX_FIXED)
#define UNCORE_PMC_IDX_MAX (UNCORE_PMC_IDX_FREERUNNING + \
UNCORE_PMC_IDX_MAX_FREERUNNING)
#define UNCORE_PCI_DEV_FULL_DATA(dev, func, type, idx) \
((dev << 24) | (func << 16) | (type << 8) | idx)
#define UNCORE_PCI_DEV_DATA(type, idx) ((type << 8) | idx)
#define UNCORE_PCI_DEV_DEV(data) ((data >> 24) & 0xff)
#define UNCORE_PCI_DEV_FUNC(data) ((data >> 16) & 0xff)
#define UNCORE_PCI_DEV_TYPE(data) ((data >> 8) & 0xff)
#define UNCORE_PCI_DEV_IDX(data) (data & 0xff)
#define UNCORE_EXTRA_PCI_DEV 0xff
#define UNCORE_EXTRA_PCI_DEV_MAX 4
#define UNCORE_EVENT_CONSTRAINT(c, n) EVENT_CONSTRAINT(c, n, 0xff)
struct pci_extra_dev {
struct pci_dev *dev[UNCORE_EXTRA_PCI_DEV_MAX];
};
struct intel_uncore_ops;
struct intel_uncore_pmu;
struct intel_uncore_box;
struct uncore_event_desc;
struct freerunning_counters;
struct intel_uncore_topology;
struct intel_uncore_type {
const char *name;
int num_counters;
int num_boxes;
int perf_ctr_bits;
int fixed_ctr_bits;
int num_freerunning_types;
int type_id;
unsigned perf_ctr;
unsigned event_ctl;
unsigned event_mask;
unsigned event_mask_ext;
unsigned fixed_ctr;
unsigned fixed_ctl;
unsigned box_ctl;
u64 *box_ctls; /* Unit ctrl addr of the first box of each die */
union {
unsigned msr_offset;
unsigned mmio_offset;
};
unsigned mmio_map_size;
unsigned num_shared_regs:8;
unsigned single_fixed:1;
unsigned pair_ctr_ctl:1;
union {
unsigned *msr_offsets;
unsigned *pci_offsets;
unsigned *mmio_offsets;
};
unsigned *box_ids;
struct event_constraint unconstrainted;
struct event_constraint *constraints;
struct intel_uncore_pmu *pmus;
struct intel_uncore_ops *ops;
struct uncore_event_desc *event_descs;
struct freerunning_counters *freerunning;
const struct attribute_group *attr_groups[4];
const struct attribute_group **attr_update;
struct pmu *pmu; /* for custom pmu ops */
/*
* Uncore PMU would store relevant platform topology configuration here
* to identify which platform component each PMON block of that type is
* supposed to monitor.
*/
struct intel_uncore_topology *topology;
/*
* Optional callbacks for managing mapping of Uncore units to PMONs
*/
int (*get_topology)(struct intel_uncore_type *type);
int (*set_mapping)(struct intel_uncore_type *type);
void (*cleanup_mapping)(struct intel_uncore_type *type);
};
#define pmu_group attr_groups[0]
#define format_group attr_groups[1]
#define events_group attr_groups[2]
struct intel_uncore_ops {
void (*init_box)(struct intel_uncore_box *);
void (*exit_box)(struct intel_uncore_box *);
void (*disable_box)(struct intel_uncore_box *);
void (*enable_box)(struct intel_uncore_box *);
void (*disable_event)(struct intel_uncore_box *, struct perf_event *);
void (*enable_event)(struct intel_uncore_box *, struct perf_event *);
u64 (*read_counter)(struct intel_uncore_box *, struct perf_event *);
int (*hw_config)(struct intel_uncore_box *, struct perf_event *);
struct event_constraint *(*get_constraint)(struct intel_uncore_box *,
struct perf_event *);
void (*put_constraint)(struct intel_uncore_box *, struct perf_event *);
};
struct intel_uncore_pmu {
struct pmu pmu;
char name[UNCORE_PMU_NAME_LEN];
int pmu_idx;
int func_id;
bool registered;
atomic_t activeboxes;
struct intel_uncore_type *type;
struct intel_uncore_box **boxes;
};
struct intel_uncore_extra_reg {
raw_spinlock_t lock;
u64 config, config1, config2;
atomic_t ref;
};
struct intel_uncore_box {
int dieid; /* Logical die ID */
int n_active; /* number of active events */
int n_events;
int cpu; /* cpu to collect events */
unsigned long flags;
atomic_t refcnt;
struct perf_event *events[UNCORE_PMC_IDX_MAX];
struct perf_event *event_list[UNCORE_PMC_IDX_MAX];
struct event_constraint *event_constraint[UNCORE_PMC_IDX_MAX];
unsigned long active_mask[BITS_TO_LONGS(UNCORE_PMC_IDX_MAX)];
u64 tags[UNCORE_PMC_IDX_MAX];
struct pci_dev *pci_dev;
struct intel_uncore_pmu *pmu;
u64 hrtimer_duration; /* hrtimer timeout for this box */
struct hrtimer hrtimer;
struct list_head list;
struct list_head active_list;
void __iomem *io_addr;
struct intel_uncore_extra_reg shared_regs[];
};
/* CFL uncore 8th cbox MSRs */
#define CFL_UNC_CBO_7_PERFEVTSEL0 0xf70
#define CFL_UNC_CBO_7_PER_CTR0 0xf76
#define UNCORE_BOX_FLAG_INITIATED 0
/* event config registers are 8-byte apart */
#define UNCORE_BOX_FLAG_CTL_OFFS8 1
/* CFL 8th CBOX has different MSR space */
#define UNCORE_BOX_FLAG_CFL8_CBOX_MSR_OFFS 2
struct uncore_event_desc {
struct device_attribute attr;
const char *config;
};
struct freerunning_counters {
unsigned int counter_base;
unsigned int counter_offset;
unsigned int box_offset;
unsigned int num_counters;
unsigned int bits;
unsigned *box_offsets;
};
struct intel_uncore_topology {
u64 configuration;
int segment;
};
struct pci2phy_map {
struct list_head list;
int segment;
int pbus_to_dieid[256];
};
struct pci2phy_map *__find_pci2phy_map(int segment);
int uncore_pcibus_to_dieid(struct pci_bus *bus);
int uncore_die_to_segment(int die);
ssize_t uncore_event_show(struct device *dev,
struct device_attribute *attr, char *buf);
static inline struct intel_uncore_pmu *dev_to_uncore_pmu(struct device *dev)
{
return container_of(dev_get_drvdata(dev), struct intel_uncore_pmu, pmu);
}
#define to_device_attribute(n) container_of(n, struct device_attribute, attr)
#define to_dev_ext_attribute(n) container_of(n, struct dev_ext_attribute, attr)
#define attr_to_ext_attr(n) to_dev_ext_attribute(to_device_attribute(n))
extern int __uncore_max_dies;
#define uncore_max_dies() (__uncore_max_dies)
#define INTEL_UNCORE_EVENT_DESC(_name, _config) \
{ \
.attr = __ATTR(_name, 0444, uncore_event_show, NULL), \
.config = _config, \
}
#define DEFINE_UNCORE_FORMAT_ATTR(_var, _name, _format) \
static ssize_t __uncore_##_var##_show(struct device *dev, \
struct device_attribute *attr, \
char *page) \
{ \
BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE); \
return sprintf(page, _format "\n"); \
} \
static struct device_attribute format_attr_##_var = \
__ATTR(_name, 0444, __uncore_##_var##_show, NULL)
static inline bool uncore_pmc_fixed(int idx)
{
return idx == UNCORE_PMC_IDX_FIXED;
}
static inline bool uncore_pmc_freerunning(int idx)
{
return idx == UNCORE_PMC_IDX_FREERUNNING;
}
static inline bool uncore_mmio_is_valid_offset(struct intel_uncore_box *box,
unsigned long offset)
{
if (offset < box->pmu->type->mmio_map_size)
return true;
pr_warn_once("perf uncore: Invalid offset 0x%lx exceeds mapped area of %s.\n",
offset, box->pmu->type->name);
return false;
}
static inline
unsigned int uncore_mmio_box_ctl(struct intel_uncore_box *box)
{
return box->pmu->type->box_ctl +
box->pmu->type->mmio_offset * box->pmu->pmu_idx;
}
static inline unsigned uncore_pci_box_ctl(struct intel_uncore_box *box)
{
return box->pmu->type->box_ctl;
}
static inline unsigned uncore_pci_fixed_ctl(struct intel_uncore_box *box)
{
return box->pmu->type->fixed_ctl;
}
static inline unsigned uncore_pci_fixed_ctr(struct intel_uncore_box *box)
{
return box->pmu->type->fixed_ctr;
}
static inline
unsigned uncore_pci_event_ctl(struct intel_uncore_box *box, int idx)
{
if (test_bit(UNCORE_BOX_FLAG_CTL_OFFS8, &box->flags))
return idx * 8 + box->pmu->type->event_ctl;
return idx * 4 + box->pmu->type->event_ctl;
}
static inline
unsigned uncore_pci_perf_ctr(struct intel_uncore_box *box, int idx)
{
return idx * 8 + box->pmu->type->perf_ctr;
}
static inline unsigned uncore_msr_box_offset(struct intel_uncore_box *box)
{
struct intel_uncore_pmu *pmu = box->pmu;
return pmu->type->msr_offsets ?
pmu->type->msr_offsets[pmu->pmu_idx] :
pmu->type->msr_offset * pmu->pmu_idx;
}
static inline unsigned uncore_msr_box_ctl(struct intel_uncore_box *box)
{
if (!box->pmu->type->box_ctl)
return 0;
return box->pmu->type->box_ctl + uncore_msr_box_offset(box);
}
static inline unsigned uncore_msr_fixed_ctl(struct intel_uncore_box *box)
{
if (!box->pmu->type->fixed_ctl)
return 0;
return box->pmu->type->fixed_ctl + uncore_msr_box_offset(box);
}
static inline unsigned uncore_msr_fixed_ctr(struct intel_uncore_box *box)
{
return box->pmu->type->fixed_ctr + uncore_msr_box_offset(box);
}
/*
* In the uncore document, there is no event-code assigned to free running
* counters. Some events need to be defined to indicate the free running
* counters. The events are encoded as event-code + umask-code.
*
* The event-code for all free running counters is 0xff, which is the same as
* the fixed counters.
*
* The umask-code is used to distinguish a fixed counter and a free running
* counter, and different types of free running counters.
* - For fixed counters, the umask-code is 0x0X.
* X indicates the index of the fixed counter, which starts from 0.
* - For free running counters, the umask-code uses the rest of the space.
* It would bare the format of 0xXY.
* X stands for the type of free running counters, which starts from 1.
* Y stands for the index of free running counters of same type, which
* starts from 0.
*
* For example, there are three types of IIO free running counters on Skylake
* server, IO CLOCKS counters, BANDWIDTH counters and UTILIZATION counters.
* The event-code for all the free running counters is 0xff.
* 'ioclk' is the first counter of IO CLOCKS. IO CLOCKS is the first type,
* which umask-code starts from 0x10.
* So 'ioclk' is encoded as event=0xff,umask=0x10
* 'bw_in_port2' is the third counter of BANDWIDTH counters. BANDWIDTH is
* the second type, which umask-code starts from 0x20.
* So 'bw_in_port2' is encoded as event=0xff,umask=0x22
*/
static inline unsigned int uncore_freerunning_idx(u64 config)
{
return ((config >> 8) & 0xf);
}
#define UNCORE_FREERUNNING_UMASK_START 0x10
static inline unsigned int uncore_freerunning_type(u64 config)
{
return ((((config >> 8) - UNCORE_FREERUNNING_UMASK_START) >> 4) & 0xf);
}
static inline
unsigned int uncore_freerunning_counter(struct intel_uncore_box *box,
struct perf_event *event)
{
unsigned int type = uncore_freerunning_type(event->hw.config);
unsigned int idx = uncore_freerunning_idx(event->hw.config);
struct intel_uncore_pmu *pmu = box->pmu;
return pmu->type->freerunning[type].counter_base +
pmu->type->freerunning[type].counter_offset * idx +
(pmu->type->freerunning[type].box_offsets ?
pmu->type->freerunning[type].box_offsets[pmu->pmu_idx] :
pmu->type->freerunning[type].box_offset * pmu->pmu_idx);
}
static inline
unsigned uncore_msr_event_ctl(struct intel_uncore_box *box, int idx)
{
if (test_bit(UNCORE_BOX_FLAG_CFL8_CBOX_MSR_OFFS, &box->flags)) {
return CFL_UNC_CBO_7_PERFEVTSEL0 +
(box->pmu->type->pair_ctr_ctl ? 2 * idx : idx);
} else {
return box->pmu->type->event_ctl +
(box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
uncore_msr_box_offset(box);
}
}
static inline
unsigned uncore_msr_perf_ctr(struct intel_uncore_box *box, int idx)
{
if (test_bit(UNCORE_BOX_FLAG_CFL8_CBOX_MSR_OFFS, &box->flags)) {
return CFL_UNC_CBO_7_PER_CTR0 +
(box->pmu->type->pair_ctr_ctl ? 2 * idx : idx);
} else {
return box->pmu->type->perf_ctr +
(box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
uncore_msr_box_offset(box);
}
}
static inline
unsigned uncore_fixed_ctl(struct intel_uncore_box *box)
{
if (box->pci_dev || box->io_addr)
return uncore_pci_fixed_ctl(box);
else
return uncore_msr_fixed_ctl(box);
}
static inline
unsigned uncore_fixed_ctr(struct intel_uncore_box *box)
{
if (box->pci_dev || box->io_addr)
return uncore_pci_fixed_ctr(box);
else
return uncore_msr_fixed_ctr(box);
}
static inline
unsigned uncore_event_ctl(struct intel_uncore_box *box, int idx)
{
if (box->pci_dev || box->io_addr)
return uncore_pci_event_ctl(box, idx);
else
return uncore_msr_event_ctl(box, idx);
}
static inline
unsigned uncore_perf_ctr(struct intel_uncore_box *box, int idx)
{
if (box->pci_dev || box->io_addr)
return uncore_pci_perf_ctr(box, idx);
else
return uncore_msr_perf_ctr(box, idx);
}
static inline int uncore_perf_ctr_bits(struct intel_uncore_box *box)
{
return box->pmu->type->perf_ctr_bits;
}
static inline int uncore_fixed_ctr_bits(struct intel_uncore_box *box)
{
return box->pmu->type->fixed_ctr_bits;
}
static inline
unsigned int uncore_freerunning_bits(struct intel_uncore_box *box,
struct perf_event *event)
{
unsigned int type = uncore_freerunning_type(event->hw.config);
return box->pmu->type->freerunning[type].bits;
}
static inline int uncore_num_freerunning(struct intel_uncore_box *box,
struct perf_event *event)
{
unsigned int type = uncore_freerunning_type(event->hw.config);
return box->pmu->type->freerunning[type].num_counters;
}
static inline int uncore_num_freerunning_types(struct intel_uncore_box *box,
struct perf_event *event)
{
return box->pmu->type->num_freerunning_types;
}
static inline bool check_valid_freerunning_event(struct intel_uncore_box *box,
struct perf_event *event)
{
unsigned int type = uncore_freerunning_type(event->hw.config);
unsigned int idx = uncore_freerunning_idx(event->hw.config);
return (type < uncore_num_freerunning_types(box, event)) &&
(idx < uncore_num_freerunning(box, event));
}
static inline int uncore_num_counters(struct intel_uncore_box *box)
{
return box->pmu->type->num_counters;
}
static inline bool is_freerunning_event(struct perf_event *event)
{
u64 cfg = event->attr.config;
return ((cfg & UNCORE_FIXED_EVENT) == UNCORE_FIXED_EVENT) &&
(((cfg >> 8) & 0xff) >= UNCORE_FREERUNNING_UMASK_START);
}
/* Check and reject invalid config */
static inline int uncore_freerunning_hw_config(struct intel_uncore_box *box,
struct perf_event *event)
{
if (is_freerunning_event(event))
return 0;
return -EINVAL;
}
static inline void uncore_disable_event(struct intel_uncore_box *box,
struct perf_event *event)
{
box->pmu->type->ops->disable_event(box, event);
}
static inline void uncore_enable_event(struct intel_uncore_box *box,
struct perf_event *event)
{
box->pmu->type->ops->enable_event(box, event);
}
static inline u64 uncore_read_counter(struct intel_uncore_box *box,
struct perf_event *event)
{
return box->pmu->type->ops->read_counter(box, event);
}
static inline void uncore_box_init(struct intel_uncore_box *box)
{
if (!test_and_set_bit(UNCORE_BOX_FLAG_INITIATED, &box->flags)) {
if (box->pmu->type->ops->init_box)
box->pmu->type->ops->init_box(box);
}
}
static inline void uncore_box_exit(struct intel_uncore_box *box)
{
if (test_and_clear_bit(UNCORE_BOX_FLAG_INITIATED, &box->flags)) {
if (box->pmu->type->ops->exit_box)
box->pmu->type->ops->exit_box(box);
}
}
static inline bool uncore_box_is_fake(struct intel_uncore_box *box)
{
return (box->dieid < 0);
}
static inline struct intel_uncore_pmu *uncore_event_to_pmu(struct perf_event *event)
{
return container_of(event->pmu, struct intel_uncore_pmu, pmu);
}
static inline struct intel_uncore_box *uncore_event_to_box(struct perf_event *event)
{
return event->pmu_private;
}
struct intel_uncore_box *uncore_pmu_to_box(struct intel_uncore_pmu *pmu, int cpu);
u64 uncore_msr_read_counter(struct intel_uncore_box *box, struct perf_event *event);
void uncore_mmio_exit_box(struct intel_uncore_box *box);
u64 uncore_mmio_read_counter(struct intel_uncore_box *box,
struct perf_event *event);
void uncore_pmu_start_hrtimer(struct intel_uncore_box *box);
void uncore_pmu_cancel_hrtimer(struct intel_uncore_box *box);
void uncore_pmu_event_start(struct perf_event *event, int flags);
void uncore_pmu_event_stop(struct perf_event *event, int flags);
int uncore_pmu_event_add(struct perf_event *event, int flags);
void uncore_pmu_event_del(struct perf_event *event, int flags);
void uncore_pmu_event_read(struct perf_event *event);
void uncore_perf_event_update(struct intel_uncore_box *box, struct perf_event *event);
struct event_constraint *
uncore_get_constraint(struct intel_uncore_box *box, struct perf_event *event);
void uncore_put_constraint(struct intel_uncore_box *box, struct perf_event *event);
u64 uncore_shared_reg_config(struct intel_uncore_box *box, int idx);
void uncore_get_alias_name(char *pmu_name, struct intel_uncore_pmu *pmu);
extern struct intel_uncore_type *empty_uncore[];
extern struct intel_uncore_type **uncore_msr_uncores;
extern struct intel_uncore_type **uncore_pci_uncores;
extern struct intel_uncore_type **uncore_mmio_uncores;
extern struct pci_driver *uncore_pci_driver;
extern struct pci_driver *uncore_pci_sub_driver;
extern raw_spinlock_t pci2phy_map_lock;
extern struct list_head pci2phy_map_head;
extern struct pci_extra_dev *uncore_extra_pci_dev;
extern struct event_constraint uncore_constraint_empty;
/* uncore_snb.c */
int snb_uncore_pci_init(void);
int ivb_uncore_pci_init(void);
int hsw_uncore_pci_init(void);
int bdw_uncore_pci_init(void);
int skl_uncore_pci_init(void);
void snb_uncore_cpu_init(void);
void nhm_uncore_cpu_init(void);
void skl_uncore_cpu_init(void);
void icl_uncore_cpu_init(void);
void adl_uncore_cpu_init(void);
void tgl_uncore_cpu_init(void);
void tgl_uncore_mmio_init(void);
void tgl_l_uncore_mmio_init(void);
int snb_pci2phy_map_init(int devid);
/* uncore_snbep.c */
int snbep_uncore_pci_init(void);
void snbep_uncore_cpu_init(void);
int ivbep_uncore_pci_init(void);
void ivbep_uncore_cpu_init(void);
int hswep_uncore_pci_init(void);
void hswep_uncore_cpu_init(void);
int bdx_uncore_pci_init(void);
void bdx_uncore_cpu_init(void);
int knl_uncore_pci_init(void);
void knl_uncore_cpu_init(void);
int skx_uncore_pci_init(void);
void skx_uncore_cpu_init(void);
int snr_uncore_pci_init(void);
void snr_uncore_cpu_init(void);
void snr_uncore_mmio_init(void);
int icx_uncore_pci_init(void);
void icx_uncore_cpu_init(void);
void icx_uncore_mmio_init(void);
int spr_uncore_pci_init(void);
void spr_uncore_cpu_init(void);
void spr_uncore_mmio_init(void);
/* uncore_nhmex.c */
void nhmex_uncore_cpu_init(void);