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b0c632db HC |
1 | /* |
2 | * kvm_s390.h - definition for kvm on s390 | |
3 | * | |
628eb9b8 | 4 | * Copyright IBM Corp. 2008,2009 |
b0c632db HC |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License (version 2 only) | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * Author(s): Carsten Otte <cotte@de.ibm.com> | |
11 | * Christian Borntraeger <borntraeger@de.ibm.com> | |
628eb9b8 | 12 | * Christian Ehrhardt <ehrhardt@de.ibm.com> |
b0c632db HC |
13 | */ |
14 | ||
15 | #ifndef ARCH_S390_KVM_S390_H | |
16 | #define ARCH_S390_KVM_S390_H | |
8f2abe6a | 17 | |
ca872302 | 18 | #include <linux/hrtimer.h> |
ba5c1e9b | 19 | #include <linux/kvm.h> |
8f2abe6a CB |
20 | #include <linux/kvm_host.h> |
21 | ||
628eb9b8 CE |
22 | /* The current code can have up to 256 pages for virtio */ |
23 | #define VIRTIODESCSPACE (256ul * 4096ul) | |
24 | ||
8f2abe6a CB |
25 | typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); |
26 | ||
9ace903d CE |
27 | /* negativ values are error codes, positive values for internal conditions */ |
28 | #define SIE_INTERCEPT_RERUNVCPU (1<<0) | |
8f2abe6a CB |
29 | int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); |
30 | ||
b0c632db HC |
31 | #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ |
32 | do { \ | |
33 | debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \ | |
34 | d_args); \ | |
35 | } while (0) | |
36 | ||
37 | #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\ | |
38 | do { \ | |
39 | debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \ | |
40 | "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \ | |
41 | d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\ | |
42 | d_args); \ | |
43 | } while (0) | |
ba5c1e9b CO |
44 | |
45 | static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu) | |
46 | { | |
47 | return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT; | |
48 | } | |
49 | ||
50 | int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); | |
ca872302 CB |
51 | enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); |
52 | void kvm_s390_tasklet(unsigned long parm); | |
ba5c1e9b CO |
53 | void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); |
54 | int kvm_s390_inject_vm(struct kvm *kvm, | |
55 | struct kvm_s390_interrupt *s390int); | |
56 | int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, | |
57 | struct kvm_s390_interrupt *s390int); | |
58 | int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); | |
9ace903d | 59 | int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action); |
453423dc | 60 | |
8feda6f7 | 61 | static inline long kvm_s390_vcpu_get_memsize(struct kvm_vcpu *vcpu) |
628eb9b8 CE |
62 | { |
63 | return vcpu->arch.sie_block->gmslm | |
64 | - vcpu->arch.sie_block->gmsor | |
65 | - VIRTIODESCSPACE + 1ul; | |
66 | } | |
67 | ||
68 | static inline void kvm_s390_vcpu_set_mem(struct kvm_vcpu *vcpu) | |
69 | { | |
f656ce01 | 70 | int idx; |
628eb9b8 | 71 | struct kvm_memory_slot *mem; |
f656ce01 | 72 | struct kvm_memslots *memslots; |
628eb9b8 | 73 | |
f656ce01 | 74 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
90d83dc3 | 75 | memslots = kvm_memslots(vcpu->kvm); |
f656ce01 MT |
76 | |
77 | mem = &memslots->memslots[0]; | |
628eb9b8 CE |
78 | |
79 | vcpu->arch.sie_block->gmsor = mem->userspace_addr; | |
80 | vcpu->arch.sie_block->gmslm = | |
81 | mem->userspace_addr + | |
82 | (mem->npages << PAGE_SHIFT) + | |
83 | VIRTIODESCSPACE - 1ul; | |
84 | ||
f656ce01 | 85 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
628eb9b8 CE |
86 | } |
87 | ||
453423dc | 88 | /* implemented in priv.c */ |
70455a36 | 89 | int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); |
5288fbf0 CB |
90 | |
91 | /* implemented in sigp.c */ | |
92 | int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); | |
93 | ||
94 | /* implemented in kvm-s390.c */ | |
971eb77f | 95 | int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, |
5288fbf0 | 96 | unsigned long addr); |
e28acfea CB |
97 | /* implemented in diag.c */ |
98 | int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); | |
99 | ||
b0c632db | 100 | #endif |