arm/arm64: KVM: Require in-kernel vgic for the arch timers

It is curently possible to run a VM with architected timers support
without creating an in-kernel VGIC, which will result in interrupts from
the virtual timer going nowhere.

To address this issue, move the architected timers initialization to the
time when we run a VCPU for the first time, and then only initialize
(and enable) the architected timers if we have a properly created and
initialized in-kernel VGIC.

When injecting interrupts from the virtual timer to the vgic, the
current setup should ensure that this never calls an on-demand init of
the VGIC, which is the only call path that could return an error from
kvm_vgic_inject_irq(), so capture the return value and raise a warning
if there's an error there.

We also change the kvm_timer_init() function from returning an int to be
a void function, since the function always succeeds.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

0 files changed, 0 insertions, 0 deletions

path: root/tools/perf/scripts/python/syscall-counts-by-pid.py

/*
 * Include file for Gigabit Ethernet device driver for Network
 * Interface Cards (NICs) utilizing the Tamarack Microelectronics
 * Inc. IPG Gigabit or Triple Speed Ethernet Media Access
 * Controller.
 */
#ifndef __LINUX_IPG_H
#define __LINUX_IPG_H

#include <linux/module.h>

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/errno.h>
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/skbuff.h>
#include <asm/bitops.h>

/*
 *	Constants
 */

/* GMII based PHY IDs */
#define		NS				0x2000
#define		MARVELL				0x0141
#define		ICPLUS_PHY		0x243

/* NIC Physical Layer Device MII register fields. */
#define         MII_PHY_SELECTOR_IEEE8023       0x0001
#define         MII_PHY_TECHABILITYFIELD        0x1FE0

/* GMII_PHY_1000 need to set to prefer master */
#define         GMII_PHY_1000BASETCONTROL_PreferMaster 0x0400

/* NIC Physical Layer Device GMII constants. */
#define         GMII_PREAMBLE                    0xFFFFFFFF
#define         GMII_ST                          0x1
#define         GMII_READ                        0x2
#define         GMII_WRITE                       0x1
#define         GMII_TA_READ_MASK                0x1
#define         GMII_TA_WRITE                    0x2

/* I/O register offsets. */
enum ipg_regs {
	DMA_CTRL		= 0x00,
	RX_DMA_STATUS		= 0x08, /* Unused + reserved */
	TFD_LIST_PTR_0		= 0x10,
	TFD_LIST_PTR_1		= 0x14,
	TX_DMA_BURST_THRESH	= 0x18,
	TX_DMA_URGENT_THRESH	= 0x19,
	TX_DMA_POLL_PERIOD	= 0x1a,
	RFD_LIST_PTR_0		= 0x1c,
	RFD_LIST_PTR_1		= 0x20,
	RX_DMA_BURST_THRESH	= 0x24,
	RX_DMA_URGENT_THRESH	= 0x25,
	RX_DMA_POLL_PERIOD	= 0x26,
	DEBUG_CTRL		= 0x2c,
	ASIC_CTRL		= 0x30,
	FIFO_CTRL		= 0x38, /* Unused */
	FLOW_OFF_THRESH		= 0x3c,
	FLOW_ON_THRESH		= 0x3e,
	EEPROM_DATA		= 0x48,
	EEPROM_CTRL		= 0x4a,
	EXPROM_ADDR		= 0x4c, /* Unused */
	EXPROM_DATA		= 0x50, /* Unused */
	WAKE_EVENT		= 0x51, /* Unused */
	COUNTDOWN		= 0x54, /* Unused */
	INT_STATUS_ACK		= 0x5a,
	INT_ENABLE		= 0x5c,
	INT_STATUS		= 0x5e, /* Unused */
	TX_STATUS		= 0x60,
	MAC_CTRL		= 0x6c,
	VLAN_TAG		= 0x70, /* Unused */
	PHY_SET			= 0x75,
	PHY_CTRL		= 0x76,
	STATION_ADDRESS_0	= 0x78,
	STATION_ADDRESS_1	= 0x7a,
	STATION_ADDRESS_2	= 0x7c,
	MAX_FRAME_SIZE		= 0x86,
	RECEIVE_MODE		= 0x88,
	HASHTABLE_0		= 0x8c,
	HASHTABLE_1		= 0x90,
	RMON_STATISTICS_MASK	= 0x98,
	STATISTICS_MASK		= 0x9c,
	RX_JUMBO_FRAMES		= 0xbc, /* Unused */
	TCP_CHECKSUM_ERRORS	= 0xc0, /* Unused */
	IP_CHECKSUM_ERRORS	= 0xc2, /* Unused */
	UDP_CHECKSUM_ERRORS	= 0xc4, /* Unused */
	TX_JUMBO_FRAMES		= 0xf4  /* Unused */
};

/* Ethernet MIB statistic register offsets. */
#define	IPG_OCTETRCVOK		0xA8
#define	IPG_MCSTOCTETRCVDOK		0xAC
#define	IPG_BCSTOCTETRCVOK		0xB0
#define	IPG_FRAMESRCVDOK		0xB4
#define	IPG_MCSTFRAMESRCVDOK		0xB8
#define	IPG_BCSTFRAMESRCVDOK		0xBE
#define	IPG_MACCONTROLFRAMESRCVD	0xC6
#define	IPG_FRAMETOOLONGERRRORS	0xC8
#define	IPG_INRANGELENGTHERRORS	0xCA
#define	IPG_FRAMECHECKSEQERRORS	0xCC
#define	IPG_FRAMESLOSTRXERRORS	0xCE
#define	IPG_OCTETXMTOK		0xD0
#define	IPG_MCSTOCTETXMTOK		0xD4
#define	IPG_BCSTOCTETXMTOK		0xD8
#define	IPG_FRAMESXMTDOK		0xDC
#define	IPG_MCSTFRAMESXMTDOK		0xE0
#define	IPG_FRAMESWDEFERREDXMT	0xE4
#define	IPG_LATECOLLISIONS		0xE8
#define	IPG_MULTICOLFRAMES		0xEC
#define	IPG_SINGLECOLFRAMES		0xF0
#define	IPG_BCSTFRAMESXMTDOK		0xF6
#define	IPG_CARRIERSENSEERRORS	0xF8
#define	IPG_MACCONTROLFRAMESXMTDOK	0xFA
#define	IPG_FRAMESABORTXSCOLLS	0xFC
#define	IPG_FRAMESWEXDEFERRAL	0xFE

/* RMON statistic register offsets. */
#define	IPG_ETHERSTATSCOLLISIONS			0x100
#define	IPG_ETHERSTATSOCTETSTRANSMIT			0x104