mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
s390/smp/kvm: unifiy sigp definitions
The smp and the kvm code have different defines for the sigp order codes. Let's just have a single place where these are defined. Also move the sigp condition code and sigp cpu status bits to the new sigp.h header file. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
parent
9d04edd23e
commit
9b747530d9
3 changed files with 64 additions and 85 deletions
31
arch/s390/include/asm/sigp.h
Normal file
31
arch/s390/include/asm/sigp.h
Normal file
|
@ -0,0 +1,31 @@
|
|||
#ifndef __S390_ASM_SIGP_H
|
||||
#define __S390_ASM_SIGP_H
|
||||
|
||||
/* SIGP order codes */
|
||||
#define SIGP_SENSE 1
|
||||
#define SIGP_EXTERNAL_CALL 2
|
||||
#define SIGP_EMERGENCY_SIGNAL 3
|
||||
#define SIGP_STOP 5
|
||||
#define SIGP_RESTART 6
|
||||
#define SIGP_STOP_AND_STORE_STATUS 9
|
||||
#define SIGP_INITIAL_CPU_RESET 11
|
||||
#define SIGP_SET_PREFIX 13
|
||||
#define SIGP_STORE_STATUS_AT_ADDRESS 14
|
||||
#define SIGP_SET_ARCHITECTURE 18
|
||||
#define SIGP_SENSE_RUNNING 21
|
||||
|
||||
/* SIGP condition codes */
|
||||
#define SIGP_CC_ORDER_CODE_ACCEPTED 0
|
||||
#define SIGP_CC_STATUS_STORED 1
|
||||
#define SIGP_CC_BUSY 2
|
||||
#define SIGP_CC_NOT_OPERATIONAL 3
|
||||
|
||||
/* SIGP cpu status bits */
|
||||
|
||||
#define SIGP_STATUS_CHECK_STOP 0x00000010UL
|
||||
#define SIGP_STATUS_STOPPED 0x00000040UL
|
||||
#define SIGP_STATUS_INVALID_PARAMETER 0x00000100UL
|
||||
#define SIGP_STATUS_INCORRECT_STATE 0x00000200UL
|
||||
#define SIGP_STATUS_NOT_RUNNING 0x00000400UL
|
||||
|
||||
#endif /* __S390_ASM_SIGP_H */
|
|
@ -44,33 +44,9 @@
|
|||
#include <asm/vdso.h>
|
||||
#include <asm/debug.h>
|
||||
#include <asm/os_info.h>
|
||||
#include <asm/sigp.h>
|
||||
#include "entry.h"
|
||||
|
||||
enum {
|
||||
sigp_sense = 1,
|
||||
sigp_external_call = 2,
|
||||
sigp_emergency_signal = 3,
|
||||
sigp_start = 4,
|
||||
sigp_stop = 5,
|
||||
sigp_restart = 6,
|
||||
sigp_stop_and_store_status = 9,
|
||||
sigp_initial_cpu_reset = 11,
|
||||
sigp_cpu_reset = 12,
|
||||
sigp_set_prefix = 13,
|
||||
sigp_store_status_at_address = 14,
|
||||
sigp_store_extended_status_at_address = 15,
|
||||
sigp_set_architecture = 18,
|
||||
sigp_conditional_emergency_signal = 19,
|
||||
sigp_sense_running = 21,
|
||||
};
|
||||
|
||||
enum {
|
||||
sigp_order_code_accepted = 0,
|
||||
sigp_status_stored = 1,
|
||||
sigp_busy = 2,
|
||||
sigp_not_operational = 3,
|
||||
};
|
||||
|
||||
enum {
|
||||
ec_schedule = 0,
|
||||
ec_call_function,
|
||||
|
@ -124,7 +100,7 @@ static inline int __pcpu_sigp_relax(u16 addr, u8 order, u32 parm, u32 *status)
|
|||
|
||||
while (1) {
|
||||
cc = __pcpu_sigp(addr, order, parm, status);
|
||||
if (cc != sigp_busy)
|
||||
if (cc != SIGP_CC_BUSY)
|
||||
return cc;
|
||||
cpu_relax();
|
||||
}
|
||||
|
@ -136,7 +112,7 @@ static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm)
|
|||
|
||||
for (retry = 0; ; retry++) {
|
||||
cc = __pcpu_sigp(pcpu->address, order, parm, &pcpu->status);
|
||||
if (cc != sigp_busy)
|
||||
if (cc != SIGP_CC_BUSY)
|
||||
break;
|
||||
if (retry >= 3)
|
||||
udelay(10);
|
||||
|
@ -146,8 +122,8 @@ static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm)
|
|||
|
||||
static inline int pcpu_stopped(struct pcpu *pcpu)
|
||||
{
|
||||
if (__pcpu_sigp(pcpu->address, sigp_sense,
|
||||
0, &pcpu->status) != sigp_status_stored)
|
||||
if (__pcpu_sigp(pcpu->address, SIGP_SENSE,
|
||||
0, &pcpu->status) != SIGP_CC_STATUS_STORED)
|
||||
return 0;
|
||||
/* Check for stopped and check stop state */
|
||||
return !!(pcpu->status & 0x50);
|
||||
|
@ -155,8 +131,8 @@ static inline int pcpu_stopped(struct pcpu *pcpu)
|
|||
|
||||
static inline int pcpu_running(struct pcpu *pcpu)
|
||||
{
|
||||
if (__pcpu_sigp(pcpu->address, sigp_sense_running,
|
||||
0, &pcpu->status) != sigp_status_stored)
|
||||
if (__pcpu_sigp(pcpu->address, SIGP_SENSE_RUNNING,
|
||||
0, &pcpu->status) != SIGP_CC_STATUS_STORED)
|
||||
return 1;
|
||||
/* Status stored condition code is equivalent to cpu not running. */
|
||||
return 0;
|
||||
|
@ -181,7 +157,7 @@ static void pcpu_ec_call(struct pcpu *pcpu, int ec_bit)
|
|||
|
||||
set_bit(ec_bit, &pcpu->ec_mask);
|
||||
order = pcpu_running(pcpu) ?
|
||||
sigp_external_call : sigp_emergency_signal;
|
||||
SIGP_EXTERNAL_CALL : SIGP_EMERGENCY_SIGNAL;
|
||||
pcpu_sigp_retry(pcpu, order, 0);
|
||||
}
|
||||
|
||||
|
@ -214,7 +190,7 @@ static int __cpuinit pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
|
|||
goto out;
|
||||
#endif
|
||||
lowcore_ptr[cpu] = lc;
|
||||
pcpu_sigp_retry(pcpu, sigp_set_prefix, (u32)(unsigned long) lc);
|
||||
pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, (u32)(unsigned long) lc);
|
||||
return 0;
|
||||
out:
|
||||
if (pcpu != &pcpu_devices[0]) {
|
||||
|
@ -229,7 +205,7 @@ static int __cpuinit pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
|
|||
|
||||
static void pcpu_free_lowcore(struct pcpu *pcpu)
|
||||
{
|
||||
pcpu_sigp_retry(pcpu, sigp_set_prefix, 0);
|
||||
pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, 0);
|
||||
lowcore_ptr[pcpu - pcpu_devices] = NULL;
|
||||
#ifndef CONFIG_64BIT
|
||||
if (MACHINE_HAS_IEEE) {
|
||||
|
@ -288,7 +264,7 @@ static void pcpu_start_fn(struct pcpu *pcpu, void (*func)(void *), void *data)
|
|||
lc->restart_fn = (unsigned long) func;
|
||||
lc->restart_data = (unsigned long) data;
|
||||
lc->restart_source = -1UL;
|
||||
pcpu_sigp_retry(pcpu, sigp_restart, 0);
|
||||
pcpu_sigp_retry(pcpu, SIGP_RESTART, 0);
|
||||
}
|
||||
|
||||
/*
|
||||
|
@ -309,7 +285,7 @@ static void pcpu_delegate(struct pcpu *pcpu, void (*func)(void *),
|
|||
if (pcpu->address == restart.source)
|
||||
func(data); /* should not return */
|
||||
/* Stop target cpu (if func returns this stops the current cpu). */
|
||||
pcpu_sigp_retry(pcpu, sigp_stop, 0);
|
||||
pcpu_sigp_retry(pcpu, SIGP_STOP, 0);
|
||||
/* Restart func on the target cpu and stop the current cpu. */
|
||||
memcpy_absolute(&lc->restart_stack, &restart, sizeof(restart));
|
||||
asm volatile(
|
||||
|
@ -388,8 +364,8 @@ void smp_emergency_stop(cpumask_t *cpumask)
|
|||
for_each_cpu(cpu, cpumask) {
|
||||
struct pcpu *pcpu = pcpu_devices + cpu;
|
||||
set_bit(ec_stop_cpu, &pcpu->ec_mask);
|
||||
while (__pcpu_sigp(pcpu->address, sigp_emergency_signal,
|
||||
0, NULL) == sigp_busy &&
|
||||
while (__pcpu_sigp(pcpu->address, SIGP_EMERGENCY_SIGNAL,
|
||||
0, NULL) == SIGP_CC_BUSY &&
|
||||
get_clock() < end)
|
||||
cpu_relax();
|
||||
}
|
||||
|
@ -425,7 +401,7 @@ void smp_send_stop(void)
|
|||
/* stop all processors */
|
||||
for_each_cpu(cpu, &cpumask) {
|
||||
struct pcpu *pcpu = pcpu_devices + cpu;
|
||||
pcpu_sigp_retry(pcpu, sigp_stop, 0);
|
||||
pcpu_sigp_retry(pcpu, SIGP_STOP, 0);
|
||||
while (!pcpu_stopped(pcpu))
|
||||
cpu_relax();
|
||||
}
|
||||
|
@ -436,7 +412,7 @@ void smp_send_stop(void)
|
|||
*/
|
||||
void smp_stop_cpu(void)
|
||||
{
|
||||
pcpu_sigp_retry(pcpu_devices + smp_processor_id(), sigp_stop, 0);
|
||||
pcpu_sigp_retry(pcpu_devices + smp_processor_id(), SIGP_STOP, 0);
|
||||
for (;;) ;
|
||||
}
|
||||
|
||||
|
@ -590,7 +566,7 @@ static void __init smp_get_save_area(int cpu, u16 address)
|
|||
}
|
||||
#endif
|
||||
/* Get the registers of a non-boot cpu. */
|
||||
__pcpu_sigp_relax(address, sigp_stop_and_store_status, 0, NULL);
|
||||
__pcpu_sigp_relax(address, SIGP_STOP_AND_STORE_STATUS, 0, NULL);
|
||||
memcpy_real(save_area, lc + SAVE_AREA_BASE, sizeof(*save_area));
|
||||
}
|
||||
|
||||
|
@ -599,8 +575,8 @@ int smp_store_status(int cpu)
|
|||
struct pcpu *pcpu;
|
||||
|
||||
pcpu = pcpu_devices + cpu;
|
||||
if (__pcpu_sigp_relax(pcpu->address, sigp_stop_and_store_status,
|
||||
0, NULL) != sigp_order_code_accepted)
|
||||
if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
|
||||
0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
|
||||
return -EIO;
|
||||
return 0;
|
||||
}
|
||||
|
@ -621,8 +597,8 @@ static struct sclp_cpu_info *smp_get_cpu_info(void)
|
|||
if (info && (use_sigp_detection || sclp_get_cpu_info(info))) {
|
||||
use_sigp_detection = 1;
|
||||
for (address = 0; address <= MAX_CPU_ADDRESS; address++) {
|
||||
if (__pcpu_sigp_relax(address, sigp_sense, 0, NULL) ==
|
||||
sigp_not_operational)
|
||||
if (__pcpu_sigp_relax(address, SIGP_SENSE, 0, NULL) ==
|
||||
SIGP_CC_NOT_OPERATIONAL)
|
||||
continue;
|
||||
info->cpu[info->configured].address = address;
|
||||
info->configured++;
|
||||
|
@ -734,8 +710,8 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
|
|||
pcpu = pcpu_devices + cpu;
|
||||
if (pcpu->state != CPU_STATE_CONFIGURED)
|
||||
return -EIO;
|
||||
if (pcpu_sigp_retry(pcpu, sigp_initial_cpu_reset, 0) !=
|
||||
sigp_order_code_accepted)
|
||||
if (pcpu_sigp_retry(pcpu, SIGP_INITIAL_CPU_RESET, 0) !=
|
||||
SIGP_CC_ORDER_CODE_ACCEPTED)
|
||||
return -EIO;
|
||||
|
||||
rc = pcpu_alloc_lowcore(pcpu, cpu);
|
||||
|
@ -795,7 +771,7 @@ void __cpu_die(unsigned int cpu)
|
|||
void __noreturn cpu_die(void)
|
||||
{
|
||||
idle_task_exit();
|
||||
pcpu_sigp_retry(pcpu_devices + smp_processor_id(), sigp_stop, 0);
|
||||
pcpu_sigp_retry(pcpu_devices + smp_processor_id(), SIGP_STOP, 0);
|
||||
for (;;) ;
|
||||
}
|
||||
|
||||
|
|
|
@ -15,38 +15,10 @@
|
|||
#include <linux/kvm.h>
|
||||
#include <linux/kvm_host.h>
|
||||
#include <linux/slab.h>
|
||||
#include <asm/sigp.h>
|
||||
#include "gaccess.h"
|
||||
#include "kvm-s390.h"
|
||||
|
||||
/* sigp order codes */
|
||||
#define SIGP_SENSE 0x01
|
||||
#define SIGP_EXTERNAL_CALL 0x02
|
||||
#define SIGP_EMERGENCY 0x03
|
||||
#define SIGP_START 0x04
|
||||
#define SIGP_STOP 0x05
|
||||
#define SIGP_RESTART 0x06
|
||||
#define SIGP_STOP_STORE_STATUS 0x09
|
||||
#define SIGP_INITIAL_CPU_RESET 0x0b
|
||||
#define SIGP_CPU_RESET 0x0c
|
||||
#define SIGP_SET_PREFIX 0x0d
|
||||
#define SIGP_STORE_STATUS_ADDR 0x0e
|
||||
#define SIGP_SET_ARCH 0x12
|
||||
#define SIGP_SENSE_RUNNING 0x15
|
||||
|
||||
/* cpu status bits */
|
||||
#define SIGP_STAT_EQUIPMENT_CHECK 0x80000000UL
|
||||
#define SIGP_STAT_NOT_RUNNING 0x00000400UL
|
||||
#define SIGP_STAT_INCORRECT_STATE 0x00000200UL
|
||||
#define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
|
||||
#define SIGP_STAT_EXT_CALL_PENDING 0x00000080UL
|
||||
#define SIGP_STAT_STOPPED 0x00000040UL
|
||||
#define SIGP_STAT_OPERATOR_INTERV 0x00000020UL
|
||||
#define SIGP_STAT_CHECK_STOP 0x00000010UL
|
||||
#define SIGP_STAT_INOPERATIVE 0x00000004UL
|
||||
#define SIGP_STAT_INVALID_ORDER 0x00000002UL
|
||||
#define SIGP_STAT_RECEIVER_CHECK 0x00000001UL
|
||||
|
||||
|
||||
static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
|
||||
u64 *reg)
|
||||
{
|
||||
|
@ -65,7 +37,7 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
|
|||
rc = 1; /* status stored */
|
||||
} else {
|
||||
*reg &= 0xffffffff00000000UL;
|
||||
*reg |= SIGP_STAT_STOPPED;
|
||||
*reg |= SIGP_STATUS_STOPPED;
|
||||
rc = 1; /* status stored */
|
||||
}
|
||||
spin_unlock(&fi->lock);
|
||||
|
@ -235,7 +207,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
|
|||
address = address & 0x7fffe000u;
|
||||
if (copy_from_guest_absolute(vcpu, &tmp, address, 1) ||
|
||||
copy_from_guest_absolute(vcpu, &tmp, address + PAGE_SIZE, 1)) {
|
||||
*reg |= SIGP_STAT_INVALID_PARAMETER;
|
||||
*reg |= SIGP_STATUS_INVALID_PARAMETER;
|
||||
return 1; /* invalid parameter */
|
||||
}
|
||||
|
||||
|
@ -249,7 +221,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
|
|||
|
||||
if (li == NULL) {
|
||||
rc = 1; /* incorrect state */
|
||||
*reg &= SIGP_STAT_INCORRECT_STATE;
|
||||
*reg &= SIGP_STATUS_INCORRECT_STATE;
|
||||
kfree(inti);
|
||||
goto out_fi;
|
||||
}
|
||||
|
@ -258,7 +230,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
|
|||
/* cpu must be in stopped state */
|
||||
if (!(atomic_read(li->cpuflags) & CPUSTAT_STOPPED)) {
|
||||
rc = 1; /* incorrect state */
|
||||
*reg &= SIGP_STAT_INCORRECT_STATE;
|
||||
*reg &= SIGP_STATUS_INCORRECT_STATE;
|
||||
kfree(inti);
|
||||
goto out_li;
|
||||
}
|
||||
|
@ -300,7 +272,7 @@ static int __sigp_sense_running(struct kvm_vcpu *vcpu, u16 cpu_addr,
|
|||
} else {
|
||||
/* not running */
|
||||
*reg &= 0xffffffff00000000UL;
|
||||
*reg |= SIGP_STAT_NOT_RUNNING;
|
||||
*reg |= SIGP_STATUS_NOT_RUNNING;
|
||||
rc = 0;
|
||||
}
|
||||
}
|
||||
|
@ -375,7 +347,7 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
|
|||
vcpu->stat.instruction_sigp_external_call++;
|
||||
rc = __sigp_external_call(vcpu, cpu_addr);
|
||||
break;
|
||||
case SIGP_EMERGENCY:
|
||||
case SIGP_EMERGENCY_SIGNAL:
|
||||
vcpu->stat.instruction_sigp_emergency++;
|
||||
rc = __sigp_emergency(vcpu, cpu_addr);
|
||||
break;
|
||||
|
@ -383,12 +355,12 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
|
|||
vcpu->stat.instruction_sigp_stop++;
|
||||
rc = __sigp_stop(vcpu, cpu_addr, ACTION_STOP_ON_STOP);
|
||||
break;
|
||||
case SIGP_STOP_STORE_STATUS:
|
||||
case SIGP_STOP_AND_STORE_STATUS:
|
||||
vcpu->stat.instruction_sigp_stop++;
|
||||
rc = __sigp_stop(vcpu, cpu_addr, ACTION_STORE_ON_STOP |
|
||||
ACTION_STOP_ON_STOP);
|
||||
break;
|
||||
case SIGP_SET_ARCH:
|
||||
case SIGP_SET_ARCHITECTURE:
|
||||
vcpu->stat.instruction_sigp_arch++;
|
||||
rc = __sigp_set_arch(vcpu, parameter);
|
||||
break;
|
||||
|
|
Loading…
Reference in a new issue