2 * definition for kvm on s390
4 * Copyright IBM Corp. 2008, 2009
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.
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
11 * Christian Borntraeger <borntraeger@de.ibm.com>
12 * Christian Ehrhardt <ehrhardt@de.ibm.com>
15 #ifndef ARCH_S390_KVM_S390_H
16 #define ARCH_S390_KVM_S390_H
18 #include <linux/hrtimer.h>
19 #include <linux/kvm.h>
20 #include <linux/kvm_host.h>
22 typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
24 /* declare vfacilities extern */
25 extern unsigned long *vfacilities;
27 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
29 /* Transactional Memory Execution related macros */
30 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
32 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
34 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
36 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
40 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
42 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
43 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
44 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
48 static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
50 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT;
53 static inline int kvm_is_ucontrol(struct kvm *kvm)
55 #ifdef CONFIG_KVM_S390_UCONTROL
64 #define GUEST_PREFIX_SHIFT 13
65 static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
67 return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT;
70 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
72 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
73 vcpu->arch.sie_block->ihcpu = 0xffff;
74 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
77 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
79 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
80 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
82 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
85 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
86 u64 *address1, u64 *address2)
88 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
89 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
90 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
91 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
93 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
94 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
97 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
100 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
102 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
105 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
107 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
108 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
109 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
110 /* The displacement is a 20bit _SIGNED_ value */
114 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
117 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
119 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
120 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
122 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
125 /* Set the condition code in the guest program status word */
126 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
128 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
129 vcpu->arch.sie_block->gpsw.mask |= cc << 44;
132 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
133 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
134 void kvm_s390_tasklet(unsigned long parm);
135 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
136 void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
137 void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
138 void kvm_s390_clear_float_irqs(struct kvm *kvm);
139 int __must_check kvm_s390_inject_vm(struct kvm *kvm,
140 struct kvm_s390_interrupt *s390int);
141 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
142 struct kvm_s390_interrupt *s390int);
143 int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
144 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
146 void kvm_s390_reinject_io_int(struct kvm *kvm,
147 struct kvm_s390_interrupt_info *inti);
148 int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
150 /* implemented in priv.c */
151 int is_valid_psw(psw_t *psw);
152 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
153 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
154 int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
155 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
156 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
157 int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu);
158 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
159 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
161 /* implemented in sigp.c */
162 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
163 int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
165 /* implemented in kvm-s390.c */
166 long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable);
167 int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
168 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
169 void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
170 void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
171 void s390_vcpu_block(struct kvm_vcpu *vcpu);
172 void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
173 void exit_sie(struct kvm_vcpu *vcpu);
174 void exit_sie_sync(struct kvm_vcpu *vcpu);
175 int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
176 void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
177 /* is cmma enabled */
178 bool kvm_s390_cmma_enabled(struct kvm *kvm);
179 int test_vfacility(unsigned long nr);
181 /* implemented in diag.c */
182 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
183 /* implemented in interrupt.c */
184 int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
185 struct kvm_s390_pgm_info *pgm_info);
188 * kvm_s390_inject_prog_cond - conditionally inject a program check
190 * @rc: original return/error code
192 * This function is supposed to be used after regular guest access functions
193 * failed, to conditionally inject a program check to a vcpu. The typical
194 * pattern would look like
196 * rc = write_guest(vcpu, addr, data, len);
198 * return kvm_s390_inject_prog_cond(vcpu, rc);
200 * A negative return code from guest access functions implies an internal error
201 * like e.g. out of memory. In these cases no program check should be injected
203 * A positive value implies that an exception happened while accessing a guest's
204 * memory. In this case all data belonging to the corresponding program check
205 * has been stored in vcpu->arch.pgm and can be injected with
206 * kvm_s390_inject_prog_irq().
208 * Returns: - the original @rc value if @rc was negative (internal error)
209 * - zero if @rc was already zero
210 * - zero or error code from injecting if @rc was positive
211 * (program check injected to @vcpu)
213 static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
217 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
220 /* implemented in interrupt.c */
221 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
222 int psw_extint_disabled(struct kvm_vcpu *vcpu);
223 void kvm_s390_destroy_adapters(struct kvm *kvm);
224 int kvm_s390_si_ext_call_pending(struct kvm_vcpu *vcpu);
226 /* implemented in guestdbg.c */
227 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
228 void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
229 void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
230 int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
231 struct kvm_guest_debug *dbg);
232 void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
233 void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
234 void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);