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1/*
2 * asm-s390/kvm_host.h - definition for kernel virtual machines on s390
3 *
4 * Copyright IBM Corp. 2008,2009
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 */
12
13
14#ifndef ASM_KVM_HOST_H
15#define ASM_KVM_HOST_H
16#include <linux/hrtimer.h>
17#include <linux/interrupt.h>
18#include <linux/kvm_host.h>
19#include <asm/debug.h>
20#include <asm/cpu.h>
21
22#define KVM_MAX_VCPUS 64
23#define KVM_MEMORY_SLOTS 32
24/* memory slots that does not exposed to userspace */
25#define KVM_PRIVATE_MEM_SLOTS 4
26
27struct sca_entry {
28 atomic_t scn;
29 __u32 reserved;
30 __u64 sda;
31 __u64 reserved2[2];
32} __attribute__((packed));
33
34
35struct sca_block {
36 __u64 ipte_control;
37 __u64 reserved[5];
38 __u64 mcn;
39 __u64 reserved2;
40 struct sca_entry cpu[64];
41} __attribute__((packed));
42
43#define KVM_NR_PAGE_SIZES 2
44#define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 8)
45#define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
46#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
47#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
48#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
49
50#define CPUSTAT_STOPPED 0x80000000
51#define CPUSTAT_WAIT 0x10000000
52#define CPUSTAT_ECALL_PEND 0x08000000
53#define CPUSTAT_STOP_INT 0x04000000
54#define CPUSTAT_IO_INT 0x02000000
55#define CPUSTAT_EXT_INT 0x01000000
56#define CPUSTAT_RUNNING 0x00800000
57#define CPUSTAT_RETAINED 0x00400000
58#define CPUSTAT_TIMING_SUB 0x00020000
59#define CPUSTAT_SIE_SUB 0x00010000
60#define CPUSTAT_RRF 0x00008000
61#define CPUSTAT_SLSV 0x00004000
62#define CPUSTAT_SLSR 0x00002000
63#define CPUSTAT_ZARCH 0x00000800
64#define CPUSTAT_MCDS 0x00000100
65#define CPUSTAT_SM 0x00000080
66#define CPUSTAT_G 0x00000008
67#define CPUSTAT_J 0x00000002
68#define CPUSTAT_P 0x00000001
69
70struct kvm_s390_sie_block {
71 atomic_t cpuflags; /* 0x0000 */
72 __u32 prefix; /* 0x0004 */
73 __u8 reserved8[32]; /* 0x0008 */
74 __u64 cputm; /* 0x0028 */
75 __u64 ckc; /* 0x0030 */
76 __u64 epoch; /* 0x0038 */
77 __u8 reserved40[4]; /* 0x0040 */
78#define LCTL_CR0 0x8000
79 __u16 lctl; /* 0x0044 */
80 __s16 icpua; /* 0x0046 */
81 __u32 ictl; /* 0x0048 */
82 __u32 eca; /* 0x004c */
83 __u8 icptcode; /* 0x0050 */
84 __u8 reserved51; /* 0x0051 */
85 __u16 ihcpu; /* 0x0052 */
86 __u8 reserved54[2]; /* 0x0054 */
87 __u16 ipa; /* 0x0056 */
88 __u32 ipb; /* 0x0058 */
89 __u32 scaoh; /* 0x005c */
90 __u8 reserved60; /* 0x0060 */
91 __u8 ecb; /* 0x0061 */
92 __u8 reserved62[2]; /* 0x0062 */
93 __u32 scaol; /* 0x0064 */
94 __u8 reserved68[4]; /* 0x0068 */
95 __u32 todpr; /* 0x006c */
96 __u8 reserved70[32]; /* 0x0070 */
97 psw_t gpsw; /* 0x0090 */
98 __u64 gg14; /* 0x00a0 */
99 __u64 gg15; /* 0x00a8 */
100 __u8 reservedb0[30]; /* 0x00b0 */
101 __u16 iprcc; /* 0x00ce */
102 __u8 reservedd0[48]; /* 0x00d0 */
103 __u64 gcr[16]; /* 0x0100 */
104 __u64 gbea; /* 0x0180 */
105 __u8 reserved188[24]; /* 0x0188 */
106 __u32 fac; /* 0x01a0 */
107 __u8 reserved1a4[92]; /* 0x01a4 */
108} __attribute__((packed));
109
110struct kvm_vcpu_stat {
111 u32 exit_userspace;
112 u32 exit_null;
113 u32 exit_external_request;
114 u32 exit_external_interrupt;
115 u32 exit_stop_request;
116 u32 exit_validity;
117 u32 exit_instruction;
118 u32 instruction_lctl;
119 u32 instruction_lctlg;
120 u32 exit_program_interruption;
121 u32 exit_instr_and_program;
122 u32 deliver_external_call;
123 u32 deliver_emergency_signal;
124 u32 deliver_service_signal;
125 u32 deliver_virtio_interrupt;
126 u32 deliver_stop_signal;
127 u32 deliver_prefix_signal;
128 u32 deliver_restart_signal;
129 u32 deliver_program_int;
130 u32 exit_wait_state;
131 u32 instruction_stidp;
132 u32 instruction_spx;
133 u32 instruction_stpx;
134 u32 instruction_stap;
135 u32 instruction_storage_key;
136 u32 instruction_stsch;
137 u32 instruction_chsc;
138 u32 instruction_stsi;
139 u32 instruction_stfl;
140 u32 instruction_tprot;
141 u32 instruction_sigp_sense;
142 u32 instruction_sigp_sense_running;
143 u32 instruction_sigp_external_call;
144 u32 instruction_sigp_emergency;
145 u32 instruction_sigp_stop;
146 u32 instruction_sigp_arch;
147 u32 instruction_sigp_prefix;
148 u32 instruction_sigp_restart;
149 u32 diagnose_10;
150 u32 diagnose_44;
151 u32 diagnose_9c;
152};
153
154struct kvm_s390_io_info {
155 __u16 subchannel_id; /* 0x0b8 */
156 __u16 subchannel_nr; /* 0x0ba */
157 __u32 io_int_parm; /* 0x0bc */
158 __u32 io_int_word; /* 0x0c0 */
159};
160
161struct kvm_s390_ext_info {
162 __u32 ext_params;
163 __u64 ext_params2;
164};
165
166#define PGM_OPERATION 0x01
167#define PGM_PRIVILEGED_OPERATION 0x02
168#define PGM_EXECUTE 0x03
169#define PGM_PROTECTION 0x04
170#define PGM_ADDRESSING 0x05
171#define PGM_SPECIFICATION 0x06
172#define PGM_DATA 0x07
173
174struct kvm_s390_pgm_info {
175 __u16 code;
176};
177
178struct kvm_s390_prefix_info {
179 __u32 address;
180};
181
182struct kvm_s390_extcall_info {
183 __u16 code;
184};
185
186struct kvm_s390_emerg_info {
187 __u16 code;
188};
189
190struct kvm_s390_interrupt_info {
191 struct list_head list;
192 u64 type;
193 union {
194 struct kvm_s390_io_info io;
195 struct kvm_s390_ext_info ext;
196 struct kvm_s390_pgm_info pgm;
197 struct kvm_s390_emerg_info emerg;
198 struct kvm_s390_extcall_info extcall;
199 struct kvm_s390_prefix_info prefix;
200 };
201};
202
203/* for local_interrupt.action_flags */
204#define ACTION_STORE_ON_STOP (1<<0)
205#define ACTION_STOP_ON_STOP (1<<1)
206#define ACTION_RELOADVCPU_ON_STOP (1<<2)
207
208struct kvm_s390_local_interrupt {
209 spinlock_t lock;
210 struct list_head list;
211 atomic_t active;
212 struct kvm_s390_float_interrupt *float_int;
213 int timer_due; /* event indicator for waitqueue below */
214 wait_queue_head_t wq;
215 atomic_t *cpuflags;
216 unsigned int action_bits;
217};
218
219struct kvm_s390_float_interrupt {
220 spinlock_t lock;
221 struct list_head list;
222 atomic_t active;
223 int next_rr_cpu;
224 unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1)
225 / sizeof(long)];
226 struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS];
227};
228
229
230struct kvm_vcpu_arch {
231 struct kvm_s390_sie_block *sie_block;
232 s390_fp_regs host_fpregs;
233 unsigned int host_acrs[NUM_ACRS];
234 s390_fp_regs guest_fpregs;
235 struct kvm_s390_local_interrupt local_int;
236 struct hrtimer ckc_timer;
237 struct tasklet_struct tasklet;
238 union {
239 struct cpuid cpu_id;
240 u64 stidp_data;
241 };
242 struct gmap *gmap;
243};
244
245struct kvm_vm_stat {
246 u32 remote_tlb_flush;
247};
248
249struct kvm_arch_memory_slot {
250};
251
252struct kvm_arch{
253 struct sca_block *sca;
254 debug_info_t *dbf;
255 struct kvm_s390_float_interrupt float_int;
256 struct gmap *gmap;
257};
258
259extern int sie64a(struct kvm_s390_sie_block *, u64 *);
260#endif
1/*
2 * definition for kernel virtual machines on s390
3 *
4 * Copyright IBM Corp. 2008, 2009
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 */
12
13
14#ifndef ASM_KVM_HOST_H
15#define ASM_KVM_HOST_H
16#include <linux/hrtimer.h>
17#include <linux/interrupt.h>
18#include <linux/kvm_host.h>
19#include <linux/kvm.h>
20#include <asm/debug.h>
21#include <asm/cpu.h>
22#include <asm/isc.h>
23
24#define KVM_MAX_VCPUS 64
25#define KVM_USER_MEM_SLOTS 32
26
27/*
28 * These seem to be used for allocating ->chip in the routing table,
29 * which we don't use. 4096 is an out-of-thin-air value. If we need
30 * to look at ->chip later on, we'll need to revisit this.
31 */
32#define KVM_NR_IRQCHIPS 1
33#define KVM_IRQCHIP_NUM_PINS 4096
34
35struct sca_entry {
36 atomic_t scn;
37 __u32 reserved;
38 __u64 sda;
39 __u64 reserved2[2];
40} __attribute__((packed));
41
42
43struct sca_block {
44 __u64 ipte_control;
45 __u64 reserved[5];
46 __u64 mcn;
47 __u64 reserved2;
48 struct sca_entry cpu[64];
49} __attribute__((packed));
50
51#define CPUSTAT_STOPPED 0x80000000
52#define CPUSTAT_WAIT 0x10000000
53#define CPUSTAT_ECALL_PEND 0x08000000
54#define CPUSTAT_STOP_INT 0x04000000
55#define CPUSTAT_IO_INT 0x02000000
56#define CPUSTAT_EXT_INT 0x01000000
57#define CPUSTAT_RUNNING 0x00800000
58#define CPUSTAT_RETAINED 0x00400000
59#define CPUSTAT_TIMING_SUB 0x00020000
60#define CPUSTAT_SIE_SUB 0x00010000
61#define CPUSTAT_RRF 0x00008000
62#define CPUSTAT_SLSV 0x00004000
63#define CPUSTAT_SLSR 0x00002000
64#define CPUSTAT_ZARCH 0x00000800
65#define CPUSTAT_MCDS 0x00000100
66#define CPUSTAT_SM 0x00000080
67#define CPUSTAT_G 0x00000008
68#define CPUSTAT_GED 0x00000004
69#define CPUSTAT_J 0x00000002
70#define CPUSTAT_P 0x00000001
71
72struct kvm_s390_sie_block {
73 atomic_t cpuflags; /* 0x0000 */
74 __u32 prefix; /* 0x0004 */
75 __u8 reserved08[4]; /* 0x0008 */
76#define PROG_IN_SIE (1<<0)
77 __u32 prog0c; /* 0x000c */
78 __u8 reserved10[16]; /* 0x0010 */
79#define PROG_BLOCK_SIE 0x00000001
80 atomic_t prog20; /* 0x0020 */
81 __u8 reserved24[4]; /* 0x0024 */
82 __u64 cputm; /* 0x0028 */
83 __u64 ckc; /* 0x0030 */
84 __u64 epoch; /* 0x0038 */
85 __u8 reserved40[4]; /* 0x0040 */
86#define LCTL_CR0 0x8000
87#define LCTL_CR6 0x0200
88#define LCTL_CR14 0x0002
89 __u16 lctl; /* 0x0044 */
90 __s16 icpua; /* 0x0046 */
91#define ICTL_LPSW 0x00400000
92 __u32 ictl; /* 0x0048 */
93 __u32 eca; /* 0x004c */
94 __u8 icptcode; /* 0x0050 */
95 __u8 reserved51; /* 0x0051 */
96 __u16 ihcpu; /* 0x0052 */
97 __u8 reserved54[2]; /* 0x0054 */
98 __u16 ipa; /* 0x0056 */
99 __u32 ipb; /* 0x0058 */
100 __u32 scaoh; /* 0x005c */
101 __u8 reserved60; /* 0x0060 */
102 __u8 ecb; /* 0x0061 */
103 __u8 ecb2; /* 0x0062 */
104 __u8 reserved63[1]; /* 0x0063 */
105 __u32 scaol; /* 0x0064 */
106 __u8 reserved68[4]; /* 0x0068 */
107 __u32 todpr; /* 0x006c */
108 __u8 reserved70[32]; /* 0x0070 */
109 psw_t gpsw; /* 0x0090 */
110 __u64 gg14; /* 0x00a0 */
111 __u64 gg15; /* 0x00a8 */
112 __u8 reservedb0[30]; /* 0x00b0 */
113 __u16 iprcc; /* 0x00ce */
114 __u8 reservedd0[48]; /* 0x00d0 */
115 __u64 gcr[16]; /* 0x0100 */
116 __u64 gbea; /* 0x0180 */
117 __u8 reserved188[24]; /* 0x0188 */
118 __u32 fac; /* 0x01a0 */
119 __u8 reserved1a4[20]; /* 0x01a4 */
120 __u64 cbrlo; /* 0x01b8 */
121 __u8 reserved1c0[30]; /* 0x01c0 */
122 __u64 pp; /* 0x01de */
123 __u8 reserved1e6[2]; /* 0x01e6 */
124 __u64 itdba; /* 0x01e8 */
125 __u8 reserved1f0[16]; /* 0x01f0 */
126} __attribute__((packed));
127
128struct kvm_s390_itdb {
129 __u8 data[256];
130} __packed;
131
132struct sie_page {
133 struct kvm_s390_sie_block sie_block;
134 __u8 reserved200[1024]; /* 0x0200 */
135 struct kvm_s390_itdb itdb; /* 0x0600 */
136 __u8 reserved700[2304]; /* 0x0700 */
137} __packed;
138
139struct kvm_vcpu_stat {
140 u32 exit_userspace;
141 u32 exit_null;
142 u32 exit_external_request;
143 u32 exit_external_interrupt;
144 u32 exit_stop_request;
145 u32 exit_validity;
146 u32 exit_instruction;
147 u32 instruction_lctl;
148 u32 instruction_lctlg;
149 u32 exit_program_interruption;
150 u32 exit_instr_and_program;
151 u32 deliver_external_call;
152 u32 deliver_emergency_signal;
153 u32 deliver_service_signal;
154 u32 deliver_virtio_interrupt;
155 u32 deliver_stop_signal;
156 u32 deliver_prefix_signal;
157 u32 deliver_restart_signal;
158 u32 deliver_program_int;
159 u32 deliver_io_int;
160 u32 exit_wait_state;
161 u32 instruction_pfmf;
162 u32 instruction_stidp;
163 u32 instruction_spx;
164 u32 instruction_stpx;
165 u32 instruction_stap;
166 u32 instruction_storage_key;
167 u32 instruction_stsch;
168 u32 instruction_chsc;
169 u32 instruction_stsi;
170 u32 instruction_stfl;
171 u32 instruction_tprot;
172 u32 instruction_essa;
173 u32 instruction_sigp_sense;
174 u32 instruction_sigp_sense_running;
175 u32 instruction_sigp_external_call;
176 u32 instruction_sigp_emergency;
177 u32 instruction_sigp_stop;
178 u32 instruction_sigp_arch;
179 u32 instruction_sigp_prefix;
180 u32 instruction_sigp_restart;
181 u32 diagnose_10;
182 u32 diagnose_44;
183 u32 diagnose_9c;
184};
185
186#define PGM_OPERATION 0x01
187#define PGM_PRIVILEGED_OP 0x02
188#define PGM_EXECUTE 0x03
189#define PGM_PROTECTION 0x04
190#define PGM_ADDRESSING 0x05
191#define PGM_SPECIFICATION 0x06
192#define PGM_DATA 0x07
193
194struct kvm_s390_interrupt_info {
195 struct list_head list;
196 u64 type;
197 union {
198 struct kvm_s390_io_info io;
199 struct kvm_s390_ext_info ext;
200 struct kvm_s390_pgm_info pgm;
201 struct kvm_s390_emerg_info emerg;
202 struct kvm_s390_extcall_info extcall;
203 struct kvm_s390_prefix_info prefix;
204 struct kvm_s390_mchk_info mchk;
205 };
206};
207
208/* for local_interrupt.action_flags */
209#define ACTION_STORE_ON_STOP (1<<0)
210#define ACTION_STOP_ON_STOP (1<<1)
211
212struct kvm_s390_local_interrupt {
213 spinlock_t lock;
214 struct list_head list;
215 atomic_t active;
216 struct kvm_s390_float_interrupt *float_int;
217 int timer_due; /* event indicator for waitqueue below */
218 wait_queue_head_t *wq;
219 atomic_t *cpuflags;
220 unsigned int action_bits;
221};
222
223struct kvm_s390_float_interrupt {
224 spinlock_t lock;
225 struct list_head list;
226 atomic_t active;
227 int next_rr_cpu;
228 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
229 unsigned int irq_count;
230};
231
232
233struct kvm_vcpu_arch {
234 struct kvm_s390_sie_block *sie_block;
235 s390_fp_regs host_fpregs;
236 unsigned int host_acrs[NUM_ACRS];
237 s390_fp_regs guest_fpregs;
238 struct kvm_s390_local_interrupt local_int;
239 struct hrtimer ckc_timer;
240 struct tasklet_struct tasklet;
241 union {
242 struct cpuid cpu_id;
243 u64 stidp_data;
244 };
245 struct gmap *gmap;
246#define KVM_S390_PFAULT_TOKEN_INVALID (-1UL)
247 unsigned long pfault_token;
248 unsigned long pfault_select;
249 unsigned long pfault_compare;
250};
251
252struct kvm_vm_stat {
253 u32 remote_tlb_flush;
254};
255
256struct kvm_arch_memory_slot {
257};
258
259struct s390_map_info {
260 struct list_head list;
261 __u64 guest_addr;
262 __u64 addr;
263 struct page *page;
264};
265
266struct s390_io_adapter {
267 unsigned int id;
268 int isc;
269 bool maskable;
270 bool masked;
271 bool swap;
272 struct rw_semaphore maps_lock;
273 struct list_head maps;
274 atomic_t nr_maps;
275};
276
277#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
278#define MAX_S390_ADAPTER_MAPS 256
279
280struct kvm_arch{
281 struct sca_block *sca;
282 debug_info_t *dbf;
283 struct kvm_s390_float_interrupt float_int;
284 struct kvm_device *flic;
285 struct gmap *gmap;
286 int css_support;
287 int use_irqchip;
288 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
289};
290
291#define KVM_HVA_ERR_BAD (-1UL)
292#define KVM_HVA_ERR_RO_BAD (-2UL)
293
294static inline bool kvm_is_error_hva(unsigned long addr)
295{
296 return IS_ERR_VALUE(addr);
297}
298
299#define ASYNC_PF_PER_VCPU 64
300struct kvm_vcpu;
301struct kvm_async_pf;
302struct kvm_arch_async_pf {
303 unsigned long pfault_token;
304};
305
306bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
307
308void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
309 struct kvm_async_pf *work);
310
311void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
312 struct kvm_async_pf *work);
313
314void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
315 struct kvm_async_pf *work);
316
317extern int sie64a(struct kvm_s390_sie_block *, u64 *);
318extern char sie_exit;
319#endif