Commit | Line | Data |
---|---|---|
b0c632db | 1 | /* |
a53c8fab | 2 | * definition for kvm on s390 |
b0c632db | 3 | * |
a53c8fab | 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 | ||
22 | typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); | |
23 | ||
78c4b59f MM |
24 | /* declare vfacilities extern */ |
25 | extern unsigned long *vfacilities; | |
26 | ||
8f2abe6a CB |
27 | int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); |
28 | ||
7feb6bb8 MM |
29 | /* Transactional Memory Execution related macros */ |
30 | #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10)) | |
31 | #define TDB_ADDR 0x1800UL | |
32 | #define TDB_FORMAT1 1 | |
33 | #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1)) | |
34 | ||
b0c632db HC |
35 | #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ |
36 | do { \ | |
37 | debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \ | |
38 | d_args); \ | |
39 | } while (0) | |
40 | ||
41 | #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\ | |
42 | do { \ | |
43 | debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \ | |
44 | "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \ | |
45 | d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\ | |
46 | d_args); \ | |
47 | } while (0) | |
ba5c1e9b CO |
48 | |
49 | static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu) | |
50 | { | |
51 | return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT; | |
52 | } | |
53 | ||
e08b9637 CO |
54 | static inline int kvm_is_ucontrol(struct kvm *kvm) |
55 | { | |
56 | #ifdef CONFIG_KVM_S390_UCONTROL | |
57 | if (kvm->arch.gmap) | |
58 | return 0; | |
59 | return 1; | |
60 | #else | |
61 | return 0; | |
62 | #endif | |
63 | } | |
8d26cf7b CB |
64 | |
65 | static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix) | |
66 | { | |
67 | vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u; | |
68 | vcpu->arch.sie_block->ihcpu = 0xffff; | |
2c70fe44 | 69 | kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); |
8d26cf7b CB |
70 | } |
71 | ||
b1c571a5 CH |
72 | static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu) |
73 | { | |
0c29b229 CB |
74 | u32 base2 = vcpu->arch.sie_block->ipb >> 28; |
75 | u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); | |
b1c571a5 CH |
76 | |
77 | return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; | |
78 | } | |
79 | ||
80 | static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu, | |
81 | u64 *address1, u64 *address2) | |
82 | { | |
0c29b229 CB |
83 | u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; |
84 | u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16; | |
85 | u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12; | |
86 | u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff; | |
b1c571a5 CH |
87 | |
88 | *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; | |
89 | *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; | |
90 | } | |
91 | ||
69d0d3a3 CB |
92 | static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2) |
93 | { | |
ff7158b2 TH |
94 | if (r1) |
95 | *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20; | |
96 | if (r2) | |
97 | *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16; | |
69d0d3a3 CB |
98 | } |
99 | ||
b1c571a5 CH |
100 | static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu) |
101 | { | |
0c29b229 CB |
102 | u32 base2 = vcpu->arch.sie_block->ipb >> 28; |
103 | u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + | |
b1c571a5 | 104 | ((vcpu->arch.sie_block->ipb & 0xff00) << 4); |
0c29b229 CB |
105 | /* The displacement is a 20bit _SIGNED_ value */ |
106 | if (disp2 & 0x80000) | |
107 | disp2+=0xfff00000; | |
b1c571a5 | 108 | |
0c29b229 | 109 | return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2; |
b1c571a5 CH |
110 | } |
111 | ||
112 | static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu) | |
113 | { | |
0c29b229 CB |
114 | u32 base2 = vcpu->arch.sie_block->ipb >> 28; |
115 | u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); | |
b1c571a5 CH |
116 | |
117 | return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; | |
118 | } | |
119 | ||
ea828ebf TH |
120 | /* Set the condition code in the guest program status word */ |
121 | static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc) | |
122 | { | |
123 | vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44); | |
124 | vcpu->arch.sie_block->gpsw.mask |= cc << 44; | |
125 | } | |
126 | ||
ba5c1e9b | 127 | int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); |
ca872302 CB |
128 | enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); |
129 | void kvm_s390_tasklet(unsigned long parm); | |
ba5c1e9b | 130 | void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); |
48a3e950 | 131 | void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu); |
2ed10cc1 | 132 | void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); |
db4a29cb HC |
133 | int __must_check kvm_s390_inject_vm(struct kvm *kvm, |
134 | struct kvm_s390_interrupt *s390int); | |
135 | int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, | |
136 | struct kvm_s390_interrupt *s390int); | |
137 | int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); | |
fa6b7fe9 CH |
138 | struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, |
139 | u64 cr6, u64 schid); | |
2f32d4ea CH |
140 | void kvm_s390_reinject_io_int(struct kvm *kvm, |
141 | struct kvm_s390_interrupt_info *inti); | |
841b91c5 | 142 | int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); |
453423dc CB |
143 | |
144 | /* implemented in priv.c */ | |
70455a36 | 145 | int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); |
bb25b9ba | 146 | int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); |
8c3f61e2 | 147 | int kvm_s390_handle_01(struct kvm_vcpu *vcpu); |
48a3e950 CH |
148 | int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); |
149 | int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); | |
aba07508 | 150 | int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu); |
953ed88d TH |
151 | int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); |
152 | int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); | |
5288fbf0 CB |
153 | |
154 | /* implemented in sigp.c */ | |
155 | int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); | |
156 | ||
157 | /* implemented in kvm-s390.c */ | |
e879892c TH |
158 | int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); |
159 | int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); | |
49b99e1e CB |
160 | void s390_vcpu_block(struct kvm_vcpu *vcpu); |
161 | void s390_vcpu_unblock(struct kvm_vcpu *vcpu); | |
162 | void exit_sie(struct kvm_vcpu *vcpu); | |
163 | void exit_sie_sync(struct kvm_vcpu *vcpu); | |
b31605c1 DD |
164 | int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); |
165 | void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); | |
166 | /* is cmma enabled */ | |
167 | bool kvm_s390_cmma_enabled(struct kvm *kvm); | |
280ef0f1 | 168 | int test_vfacility(unsigned long nr); |
b31605c1 | 169 | |
e28acfea CB |
170 | /* implemented in diag.c */ |
171 | int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); | |
bcd84683 JF |
172 | /* implemented in interrupt.c */ |
173 | int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, | |
174 | struct kvm_s390_pgm_info *pgm_info); | |
e28acfea | 175 | |
1b0462e5 HC |
176 | /** |
177 | * kvm_s390_inject_prog_cond - conditionally inject a program check | |
178 | * @vcpu: virtual cpu | |
179 | * @rc: original return/error code | |
180 | * | |
181 | * This function is supposed to be used after regular guest access functions | |
182 | * failed, to conditionally inject a program check to a vcpu. The typical | |
183 | * pattern would look like | |
184 | * | |
185 | * rc = write_guest(vcpu, addr, data, len); | |
186 | * if (rc) | |
187 | * return kvm_s390_inject_prog_cond(vcpu, rc); | |
188 | * | |
189 | * A negative return code from guest access functions implies an internal error | |
190 | * like e.g. out of memory. In these cases no program check should be injected | |
191 | * to the guest. | |
192 | * A positive value implies that an exception happened while accessing a guest's | |
193 | * memory. In this case all data belonging to the corresponding program check | |
194 | * has been stored in vcpu->arch.pgm and can be injected with | |
195 | * kvm_s390_inject_prog_irq(). | |
196 | * | |
197 | * Returns: - the original @rc value if @rc was negative (internal error) | |
198 | * - zero if @rc was already zero | |
199 | * - zero or error code from injecting if @rc was positive | |
200 | * (program check injected to @vcpu) | |
201 | */ | |
202 | static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc) | |
203 | { | |
204 | if (rc <= 0) | |
205 | return rc; | |
206 | return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); | |
207 | } | |
208 | ||
3c038e6b DD |
209 | /* implemented in interrupt.c */ |
210 | int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu); | |
211 | int psw_extint_disabled(struct kvm_vcpu *vcpu); | |
841b91c5 | 212 | void kvm_s390_destroy_adapters(struct kvm *kvm); |
3c038e6b | 213 | |
b0c632db | 214 | #endif |