litmus-rt.git - The LITMUS^RT kernel.

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author	Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>	2014-09-02 08:51:18 -0400
committer	Dave Airlie <airlied@redhat.com>	2014-09-16 20:54:59 -0400
commit	e3a9b04621681d0f07bc8e9935684e6400edef7c (patch)
tree	74ecc635fe3acb3fad6a6b70e54a62d07a825e1c /drivers/gpu/host1x/hw/hw_host1x04_uclass.h
parent	75ece7b788f37bf7a2c51ff199b2011ee5e631a4 (diff)

drm/tilcdc: panel: Spurious whitespace removal

Just a cosmetic cleanup. Tested-by: Darren Etheridge <detheridge@ti.com> Tested-by: Johannes Pointner <johannes.pointner@br-automation.com> Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Dave Airlie <airlied@redhat.com>

Diffstat (limited to 'drivers/gpu/host1x/hw/hw_host1x04_uclass.h')

0 files changed, 0 insertions, 0 deletions

/* * interrupt.c - handling kvm guest interrupts * * Copyright IBM Corp. 2008 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License (version 2 only) * as published by the Free Software Foundation. * * Author(s): Carsten Otte <cotte@de.ibm.com> */ #include <linux/interrupt.h> #include <linux/kvm_host.h> #include <linux/hrtimer.h> #include <linux/signal.h> #include <asm/asm-offsets.h> #include <asm/uaccess.h> #include "kvm-s390.h" #include "gaccess.h" static int psw_extint_disabled(struct kvm_vcpu *vcpu) { return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_EXT); } static int psw_interrupts_disabled(struct kvm_vcpu *vcpu) { if ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PER) || (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_IO) || (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_EXT)) return 0; return 1; } static int __interrupt_is_deliverable(struct kvm_vcpu *vcpu, struct kvm_s390_interrupt_info *inti) { switch (inti->type) { case KVM_S390_INT_EMERGENCY: if (psw_extint_disabled(vcpu)) return 0; if (vcpu->arch.sie_block->gcr[0] & 0x4000ul) return 1; return 0; case KVM_S390_INT_SERVICE: if (psw_extint_disabled(vcpu)) return 0; if (vcpu->arch.sie_block->gcr[0] & 0x200ul) return 1; return 0; case KVM_S390_INT_VIRTIO: if (psw_extint_disabled(vcpu)) return 0; if (vcpu->arch.sie_block->gcr[0] & 0x200ul) return 1; return 0; case KVM_S390_PROGRAM_INT: case KVM_S390_SIGP_STOP: case KVM_S390_SIGP_SET_PREFIX: case KVM_S390_RESTART: return 1; default: BUG(); } return 0; } static void __set_cpu_idle(struct kvm_vcpu *vcpu) { BUG_ON(vcpu->vcpu_id > KVM_MAX_VCPUS - 1); atomic_set_mask(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags); set_bit(vcpu->vcpu_id, vcpu->arch.local_int.float_int->idle_mask); } static void __unset_cpu_idle(struct kvm_vcpu *vcpu) { BUG_ON(vcpu->vcpu_id > KVM_MAX_VCPUS - 1); atomic_clear_mask(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags); clear_bit(vcpu->vcpu_id, vcpu->arch.local_int.float_int->idle_mask); } static void __reset_intercept_indicators(struct kvm_vcpu *vcpu) { atomic_clear_mask(CPUSTAT_ECALL_PEND | CPUSTAT_IO_INT | CPUSTAT_EXT_INT | CPUSTAT_STOP_INT, &vcpu->arch.sie_block->cpuflags); vcpu->arch.sie_block->lctl = 0x0000; } static void __set_cpuflag(struct kvm_vcpu *vcpu, u32 flag) { atomic_set_mask(flag, &vcpu->arch.sie_block->cpuflags); } static void __set_intercept_indicator(struct kvm_vcpu *vcpu, struct kvm_s390_interrupt_info *inti) { switch (inti->type) { case KVM_S390_INT_EMERGENCY: case KVM_S390_INT_SERVICE: case KVM_S390_INT_VIRTIO: if (psw_extint_disabled(vcpu)) __set_cpuflag(vcpu, CPUSTAT_EXT_INT); else vcpu->arch.sie_block->lctl |= LCTL_CR0; break; case KVM_S390_SIGP_STOP: __set_cpuflag(vcpu, CPUSTAT_STOP_INT); break; default: BUG(); } } static void __do_deliver_interrupt(struct kvm_vcpu *vcpu, struct kvm_s390_interrupt_info *inti) { const unsigned short table[] = { 2, 4, 4, 6 }; int rc, exception = 0; switch (inti->type) { case KVM_S390_INT_EMERGENCY: VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp emerg"); vcpu->stat.deliver_emergency_signal++; rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1201); if (rc == -EFAULT) exception = 1; rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW, &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw, __LC_EXT_NEW_PSW, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; break; case KVM_S390_INT_SERVICE: VCPU_EVENT(vcpu, 4, "interrupt: sclp parm:%x", inti->ext.ext_params); vcpu->stat.deliver_service_signal++; rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2401); if (rc == -EFAULT) exception = 1; rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW, &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw, __LC_EXT_NEW_PSW, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = put_guest_u32(vcpu, __LC_EXT_PARAMS, inti->ext.ext_params); if (rc == -EFAULT) exception = 1; break; case KVM_S390_INT_VIRTIO: VCPU_EVENT(vcpu, 4, "interrupt: virtio parm:%x,parm64:%llx", inti->ext.ext_params, inti->ext.ext_params2); vcpu->stat.deliver_virtio_interrupt++; rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2603); if (rc == -EFAULT) exception = 1; rc = put_guest_u16(vcpu, __LC_CPU_ADDRESS, 0x0d00); if (rc == -EFAULT) exception = 1; rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW, &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw, __LC_EXT_NEW_PSW, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = put_guest_u32(vcpu, __LC_EXT_PARAMS, inti->ext.ext_params); if (rc == -EFAULT) exception = 1; rc = put_guest_u64(vcpu, __LC_EXT_PARAMS2, inti->ext.ext_params2); if (rc == -EFAULT) exception = 1; break; case KVM_S390_SIGP_STOP: VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu stop"); vcpu->stat.deliver_stop_signal++; __set_intercept_indicator(vcpu, inti); break; case KVM_S390_SIGP_SET_PREFIX: VCPU_EVENT(vcpu, 4, "interrupt: set prefix to %x", inti->prefix.address); vcpu->stat.deliver_prefix_signal++; vcpu->arch.sie_block->prefix = inti->prefix.address; vcpu->arch.sie_block->ihcpu = 0xffff; break; case KVM_S390_RESTART: VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu restart"); vcpu->stat.deliver_restart_signal++; rc = copy_to_guest(vcpu, offsetof(struct _lowcore, restart_old_psw), &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw, offsetof(struct _lowcore, restart_psw), sizeof(psw_t)); if (rc == -EFAULT) exception = 1; break; case KVM_S390_PROGRAM_INT: VCPU_EVENT(vcpu, 4, "interrupt: pgm check code:%x, ilc:%x", inti->pgm.code, table[vcpu->arch.sie_block->ipa >> 14]); vcpu->stat.deliver_program_int++; rc = put_guest_u16(vcpu, __LC_PGM_INT_CODE, inti->pgm.code); if (rc == -EFAULT) exception = 1; rc = put_guest_u16(vcpu, __LC_PGM_ILC, table[vcpu->arch.sie_block->ipa >> 14]); if (rc == -EFAULT) exception = 1; rc = copy_to_guest(vcpu, __LC_PGM_OLD_PSW, &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw, __LC_PGM_NEW_PSW, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; break; default: BUG(); } if (exception) { printk("kvm: The guest lowcore is not mapped during interrupt " "delivery, killing userspace\n"); do_exit(SIGKILL); } } static int __try_deliver_ckc_interrupt(struct kvm_vcpu *vcpu) { int rc, exception = 0; if (psw_extint_disabled(vcpu)) return 0; if (!(vcpu->arch.sie_block->gcr[0] & 0x800ul)) return 0; rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1004); if (rc == -EFAULT) exception = 1; rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW, &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw, __LC_EXT_NEW_PSW, sizeof(psw_t)); if (rc == -EFAULT) exception = 1; if (exception) { printk("kvm: The guest lowcore is not mapped during interrupt " "delivery, killing userspace\n"); do_exit(SIGKILL); } return 1; } static int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu) { struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int; struct kvm_s390_interrupt_info *inti; int rc = 0; if (atomic_read(&li->active)) { spin_lock_bh(&li->lock); list_for_each_entry(inti, &li->list, list) if (__interrupt_is_deliverable(vcpu, inti)) { rc = 1; break; } spin_unlock_bh(&li->lock); } if ((!rc) && atomic_read(&fi->active)) { spin_lock(&fi->lock); list_for_each_entry(inti, &fi->list, list) if (__interrupt_is_deliverable(vcpu, inti)) { rc = 1; break; } spin_unlock(&fi->lock); } if ((!rc) && (vcpu->arch.sie_block->ckc < get_clock() + vcpu->arch.sie_block->epoch)) { if ((!psw_extint_disabled(vcpu)) && (vcpu->arch.sie_block->gcr[0] & 0x800ul)) rc = 1; } return rc; } int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) { return 0; } int kvm_s390_handle_wait(struct kvm_vcpu *vcpu) { u64 now, sltime; DECLARE_WAITQUEUE(wait, current); vcpu->stat.exit_wait_state++; if (kvm_cpu_has_interrupt(vcpu)) return 0; __set_cpu_idle(vcpu); spin_lock_bh(&vcpu->arch.local_int.lock); vcpu->arch.local_int.timer_due = 0; spin_unlock_bh(&vcpu->arch.local_int.lock); if (psw_interrupts_disabled(vcpu)) { VCPU_EVENT(vcpu, 3, "%s", "disabled wait"); __unset_cpu_idle(vcpu); return -EOPNOTSUPP; /* disabled wait */ } if (psw_extint_disabled(vcpu) || (!(vcpu->arch.sie_block->gcr[0] & 0x800ul))) { VCPU_EVENT(vcpu, 3, "%s", "enabled wait w/o timer"); goto no_timer; } now = get_clock() + vcpu->arch.sie_block->epoch; if (vcpu->arch.sie_block->ckc < now) { __unset_cpu_idle(vcpu); return 0; } sltime = ((vcpu->arch.sie_block->ckc - now)*125)>>9; hrtimer_start(&vcpu->arch.ckc_timer, ktime_set (0, sltime) , HRTIMER_MODE_REL); VCPU_EVENT(vcpu, 5, "enabled wait via clock comparator: %llx ns", sltime); no_timer: spin_lock(&vcpu->arch.local_int.float_int->lock); spin_lock_bh(&vcpu->arch.local_int.lock); add_wait_queue(&vcpu->arch.local_int.wq, &wait); while (list_empty(&vcpu->arch.local_int.list) && list_empty(&vcpu->arch.local_int.float_int->list) && (!vcpu->arch.local_int.timer_due) && !signal_pending(current)) { set_current_state(TASK_INTERRUPTIBLE); spin_unlock_bh(&vcpu->arch.local_int.lock); spin_unlock(&vcpu->arch.local_int.float_int->lock); vcpu_put(vcpu); schedule(); vcpu_load(vcpu); spin_lock(&vcpu->arch.local_int.float_int->lock); spin_lock_bh(&vcpu->arch.local_int.lock); } __unset_cpu_idle(vcpu); __set_current_state(TASK_RUNNING); remove_wait_queue(&vcpu->arch.local_int.wq, &wait); spin_unlock_bh(&vcpu->arch.local_int.lock); spin_unlock(&vcpu->arch.local_int.float_int->lock); hrtimer_try_to_cancel(&vcpu->arch.ckc_timer); return 0; } void kvm_s390_tasklet(unsigned long parm) { struct kvm_vcpu *vcpu = (struct kvm_vcpu *) parm; spin_lock(&vcpu->arch.local_int.lock); vcpu->arch.local_int.timer_due = 1; if (waitqueue_active(&vcpu->arch.local_int.wq)) wake_up_interruptible(&vcpu->arch.local_int.wq); spin_unlock(&vcpu->arch.local_int.lock); } /* * low level hrtimer wake routine. Because this runs in hardirq context * we schedule a tasklet to do the real work. */ enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer) { struct kvm_vcpu *vcpu; vcpu = container_of(timer, struct kvm_vcpu, arch.ckc_timer); tasklet_schedule(&vcpu->arch.tasklet); return HRTIMER_NORESTART; } void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu) { struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int; struct kvm_s390_interrupt_info *n, *inti = NULL; int deliver; __reset_intercept_indicators(vcpu); if (atomic_read(&li->active)) { do { deliver = 0; spin_lock_bh(&li->lock); list_for_each_entry_safe(inti, n, &li->list, list) { if (__interrupt_is_deliverable(vcpu, inti)) { list_del(&inti->list); deliver = 1; break; } __set_intercept_indicator(vcpu, inti); } if (list_empty(&li->list)) atomic_set(&li->active, 0); spin_unlock_bh(&li->lock); if (deliver) { __do_deliver_interrupt(vcpu, inti); kfree(inti); } } while (deliver); } if ((vcpu->arch.sie_block->ckc < get_clock() + vcpu->arch.sie_block->epoch))


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