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/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM pci
#if !defined(_TRACE_HW_EVENT_PCI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HW_EVENT_PCI_H
#include <uapi/linux/pci_regs.h>
#include <linux/tracepoint.h>
#define PCI_HOTPLUG_EVENT \
EM(PCI_HOTPLUG_LINK_UP, "LINK_UP") \
EM(PCI_HOTPLUG_LINK_DOWN, "LINK_DOWN") \
EM(PCI_HOTPLUG_CARD_PRESENT, "CARD_PRESENT") \
EMe(PCI_HOTPLUG_CARD_NOT_PRESENT, "CARD_NOT_PRESENT")
/* Enums require being exported to userspace, for user tool parsing */
#undef EM
#undef EMe
#define EM(a, b) TRACE_DEFINE_ENUM(a);
#define EMe(a, b) TRACE_DEFINE_ENUM(a);
PCI_HOTPLUG_EVENT
/*
* Now redefine the EM() and EMe() macros to map the enums to the strings
* that will be printed in the output.
*/
#undef EM
#undef EMe
#define EM(a, b) {a, b},
#define EMe(a, b) {a, b}
/*
* Note: For generic PCI hotplug events, we pass already-resolved strings
* (port_name, slot) instead of driver-specific structures like 'struct
* controller'. This is because different PCI hotplug drivers (pciehp, cpqphp,
* ibmphp, shpchp) define their own versions of 'struct controller' with
* different fields and helper functions. Using driver-specific structures would
* make the tracepoint interface non-generic and cause compatibility issues
* across different drivers.
*/
TRACE_EVENT(pci_hp_event,
TP_PROTO(const char *port_name,
const char *slot,
const int event),
TP_ARGS(port_name, slot, event),
TP_STRUCT__entry(
__string( port_name, port_name )
__string( slot, slot )
__field( int, event )
),
TP_fast_assign(
__assign_str(port_name);
__assign_str(slot);
__entry->event = event;
),
TP_printk("%s slot:%s, event:%s\n",
__get_str(port_name),
__get_str(slot),
__print_symbolic(__entry->event, PCI_HOTPLUG_EVENT)
)
);
#define PCI_EXP_LNKSTA_LINK_STATUS_MASK (PCI_EXP_LNKSTA_LBMS | \
PCI_EXP_LNKSTA_LABS | \
PCI_EXP_LNKSTA_LT | \
PCI_EXP_LNKSTA_DLLLA)
#define LNKSTA_FLAGS \
{ PCI_EXP_LNKSTA_LT, "LT"}, \
{ PCI_EXP_LNKSTA_DLLLA, "DLLLA"}, \
{ PCI_EXP_LNKSTA_LBMS, "LBMS"}, \
{ PCI_EXP_LNKSTA_LABS, "LABS"}
TRACE_EVENT(pcie_link_event,
TP_PROTO(struct pci_bus *bus,
unsigned int reason,
unsigned int width,
unsigned int status
),
TP_ARGS(bus, reason, width, status),
TP_STRUCT__entry(
__string( port_name, pci_name(bus->self))
__field( unsigned int, type )
__field( unsigned int, reason )
__field( unsigned int, cur_bus_speed )
__field( unsigned int, max_bus_speed )
__field( unsigned int, width )
__field( unsigned int, flit_mode )
__field( unsigned int, link_status )
),
TP_fast_assign(
__assign_str(port_name);
__entry->type = pci_pcie_type(bus->self);
__entry->reason = reason;
__entry->cur_bus_speed = bus->cur_bus_speed;
__entry->max_bus_speed = bus->max_bus_speed;
__entry->width = width;
__entry->flit_mode = bus->flit_mode;
__entry->link_status = status;
),
TP_printk("%s type:%d, reason:%d, cur_bus_speed:%d, max_bus_speed:%d, width:%u, flit_mode:%u, status:%s\n",
__get_str(port_name),
__entry->type,
__entry->reason,
__entry->cur_bus_speed,
__entry->max_bus_speed,
__entry->width,
__entry->flit_mode,
__print_flags((unsigned long)__entry->link_status, "|",
LNKSTA_FLAGS)
)
);
#endif /* _TRACE_HW_EVENT_PCI_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
|
