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authorHollis Blanchard <hollisb@us.ibm.com>2008-04-17 00:28:09 -0400
committerAvi Kivity <avi@qumranet.com>2008-04-27 11:21:39 -0400
commitbbf45ba57eaec56569918a8bab96ab653bd45ec1 (patch)
tree63c53b1c1d93ec6559c7695c16b2345238e270f5 /include/asm-powerpc
parent513014b717203d1d689652d0fda86eee959a6a8a (diff)
KVM: ppc: PowerPC 440 KVM implementation
This functionality is definitely experimental, but is capable of running unmodified PowerPC 440 Linux kernels as guests on a PowerPC 440 host. (Only tested with 440EP "Bamboo" guests so far, but with appropriate userspace support other SoC/board combinations should work.) See Documentation/powerpc/kvm_440.txt for technical details. [stephen: build fix] Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/kvm.h53
-rw-r--r--include/asm-powerpc/kvm_asm.h55
-rw-r--r--include/asm-powerpc/kvm_host.h152
-rw-r--r--include/asm-powerpc/kvm_para.h37
-rw-r--r--include/asm-powerpc/kvm_ppc.h88
5 files changed, 383 insertions, 2 deletions
diff --git a/include/asm-powerpc/kvm.h b/include/asm-powerpc/kvm.h
index d1b530fbf8dd..f993e4198d5c 100644
--- a/include/asm-powerpc/kvm.h
+++ b/include/asm-powerpc/kvm.h
@@ -1,6 +1,55 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2007
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
1#ifndef __LINUX_KVM_POWERPC_H 20#ifndef __LINUX_KVM_POWERPC_H
2#define __LINUX_KVM_POWERPC_H 21#define __LINUX_KVM_POWERPC_H
3 22
4/* powerpc does not support KVM */ 23#include <asm/types.h>
24
25struct kvm_regs {
26 __u64 pc;
27 __u64 cr;
28 __u64 ctr;
29 __u64 lr;
30 __u64 xer;
31 __u64 msr;
32 __u64 srr0;
33 __u64 srr1;
34 __u64 pid;
35
36 __u64 sprg0;
37 __u64 sprg1;
38 __u64 sprg2;
39 __u64 sprg3;
40 __u64 sprg4;
41 __u64 sprg5;
42 __u64 sprg6;
43 __u64 sprg7;
44
45 __u64 gpr[32];
46};
47
48struct kvm_sregs {
49};
50
51struct kvm_fpu {
52 __u64 fpr[32];
53};
5 54
6#endif 55#endif /* __LINUX_KVM_POWERPC_H */
diff --git a/include/asm-powerpc/kvm_asm.h b/include/asm-powerpc/kvm_asm.h
new file mode 100644
index 000000000000..2197764796d9
--- /dev/null
+++ b/include/asm-powerpc/kvm_asm.h
@@ -0,0 +1,55 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#ifndef __POWERPC_KVM_ASM_H__
21#define __POWERPC_KVM_ASM_H__
22
23/* IVPR must be 64KiB-aligned. */
24#define VCPU_SIZE_ORDER 4
25#define VCPU_SIZE_LOG (VCPU_SIZE_ORDER + 12)
26#define VCPU_TLB_PGSZ PPC44x_TLB_64K
27#define VCPU_SIZE_BYTES (1<<VCPU_SIZE_LOG)
28
29#define BOOKE_INTERRUPT_CRITICAL 0
30#define BOOKE_INTERRUPT_MACHINE_CHECK 1
31#define BOOKE_INTERRUPT_DATA_STORAGE 2
32#define BOOKE_INTERRUPT_INST_STORAGE 3
33#define BOOKE_INTERRUPT_EXTERNAL 4
34#define BOOKE_INTERRUPT_ALIGNMENT 5
35#define BOOKE_INTERRUPT_PROGRAM 6
36#define BOOKE_INTERRUPT_FP_UNAVAIL 7
37#define BOOKE_INTERRUPT_SYSCALL 8
38#define BOOKE_INTERRUPT_AP_UNAVAIL 9
39#define BOOKE_INTERRUPT_DECREMENTER 10
40#define BOOKE_INTERRUPT_FIT 11
41#define BOOKE_INTERRUPT_WATCHDOG 12
42#define BOOKE_INTERRUPT_DTLB_MISS 13
43#define BOOKE_INTERRUPT_ITLB_MISS 14
44#define BOOKE_INTERRUPT_DEBUG 15
45#define BOOKE_MAX_INTERRUPT 15
46
47#define RESUME_FLAG_NV (1<<0) /* Reload guest nonvolatile state? */
48#define RESUME_FLAG_HOST (1<<1) /* Resume host? */
49
50#define RESUME_GUEST 0
51#define RESUME_GUEST_NV RESUME_FLAG_NV
52#define RESUME_HOST RESUME_FLAG_HOST
53#define RESUME_HOST_NV (RESUME_FLAG_HOST|RESUME_FLAG_NV)
54
55#endif /* __POWERPC_KVM_ASM_H__ */
diff --git a/include/asm-powerpc/kvm_host.h b/include/asm-powerpc/kvm_host.h
new file mode 100644
index 000000000000..04ffbb8e0a35
--- /dev/null
+++ b/include/asm-powerpc/kvm_host.h
@@ -0,0 +1,152 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2007
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#ifndef __POWERPC_KVM_HOST_H__
21#define __POWERPC_KVM_HOST_H__
22
23#include <linux/mutex.h>
24#include <linux/timer.h>
25#include <linux/types.h>
26#include <linux/kvm_types.h>
27#include <asm/kvm_asm.h>
28
29#define KVM_MAX_VCPUS 1
30#define KVM_MEMORY_SLOTS 32
31/* memory slots that does not exposed to userspace */
32#define KVM_PRIVATE_MEM_SLOTS 4
33
34/* We don't currently support large pages. */
35#define KVM_PAGES_PER_HPAGE (1<<31)
36
37struct kvm;
38struct kvm_run;
39struct kvm_vcpu;
40
41struct kvm_vm_stat {
42 u32 remote_tlb_flush;
43};
44
45struct kvm_vcpu_stat {
46 u32 sum_exits;
47 u32 mmio_exits;
48 u32 dcr_exits;
49 u32 signal_exits;
50 u32 light_exits;
51 /* Account for special types of light exits: */
52 u32 itlb_real_miss_exits;
53 u32 itlb_virt_miss_exits;
54 u32 dtlb_real_miss_exits;
55 u32 dtlb_virt_miss_exits;
56 u32 syscall_exits;
57 u32 isi_exits;
58 u32 dsi_exits;
59 u32 emulated_inst_exits;
60 u32 dec_exits;
61 u32 ext_intr_exits;
62};
63
64struct tlbe {
65 u32 tid; /* Only the low 8 bits are used. */
66 u32 word0;
67 u32 word1;
68 u32 word2;
69};
70
71struct kvm_arch {
72};
73
74struct kvm_vcpu_arch {
75 /* Unmodified copy of the guest's TLB. */
76 struct tlbe guest_tlb[PPC44x_TLB_SIZE];
77 /* TLB that's actually used when the guest is running. */
78 struct tlbe shadow_tlb[PPC44x_TLB_SIZE];
79 /* Pages which are referenced in the shadow TLB. */
80 struct page *shadow_pages[PPC44x_TLB_SIZE];
81 /* Copy of the host's TLB. */
82 struct tlbe host_tlb[PPC44x_TLB_SIZE];
83
84 u32 host_stack;
85 u32 host_pid;
86
87 u64 fpr[32];
88 u32 gpr[32];
89
90 u32 pc;
91 u32 cr;
92 u32 ctr;
93 u32 lr;
94 u32 xer;
95
96 u32 msr;
97 u32 mmucr;
98 u32 sprg0;
99 u32 sprg1;
100 u32 sprg2;
101 u32 sprg3;
102 u32 sprg4;
103 u32 sprg5;
104 u32 sprg6;
105 u32 sprg7;
106 u32 srr0;
107 u32 srr1;
108 u32 csrr0;
109 u32 csrr1;
110 u32 dsrr0;
111 u32 dsrr1;
112 u32 dear;
113 u32 esr;
114 u32 dec;
115 u32 decar;
116 u32 tbl;
117 u32 tbu;
118 u32 tcr;
119 u32 tsr;
120 u32 ivor[16];
121 u32 ivpr;
122 u32 pir;
123 u32 pid;
124 u32 pvr;
125 u32 ccr0;
126 u32 ccr1;
127 u32 dbcr0;
128 u32 dbcr1;
129
130 u32 last_inst;
131 u32 fault_dear;
132 u32 fault_esr;
133 gpa_t paddr_accessed;
134
135 u8 io_gpr; /* GPR used as IO source/target */
136 u8 mmio_is_bigendian;
137 u8 dcr_needed;
138 u8 dcr_is_write;
139
140 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
141
142 struct timer_list dec_timer;
143 unsigned long pending_exceptions;
144};
145
146struct kvm_guest_debug {
147 int enabled;
148 unsigned long bp[4];
149 int singlestep;
150};
151
152#endif /* __POWERPC_KVM_HOST_H__ */
diff --git a/include/asm-powerpc/kvm_para.h b/include/asm-powerpc/kvm_para.h
new file mode 100644
index 000000000000..2d48f6a63d0b
--- /dev/null
+++ b/include/asm-powerpc/kvm_para.h
@@ -0,0 +1,37 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#ifndef __POWERPC_KVM_PARA_H__
21#define __POWERPC_KVM_PARA_H__
22
23#ifdef __KERNEL__
24
25static inline int kvm_para_available(void)
26{
27 return 0;
28}
29
30static inline unsigned int kvm_arch_para_features(void)
31{
32 return 0;
33}
34
35#endif /* __KERNEL__ */
36
37#endif /* __POWERPC_KVM_PARA_H__ */
diff --git a/include/asm-powerpc/kvm_ppc.h b/include/asm-powerpc/kvm_ppc.h
new file mode 100644
index 000000000000..7ac820308a7e
--- /dev/null
+++ b/include/asm-powerpc/kvm_ppc.h
@@ -0,0 +1,88 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#ifndef __POWERPC_KVM_PPC_H__
21#define __POWERPC_KVM_PPC_H__
22
23/* This file exists just so we can dereference kvm_vcpu, avoiding nested header
24 * dependencies. */
25
26#include <linux/mutex.h>
27#include <linux/timer.h>
28#include <linux/types.h>
29#include <linux/kvm_types.h>
30#include <linux/kvm_host.h>
31
32struct kvm_tlb {
33 struct tlbe guest_tlb[PPC44x_TLB_SIZE];
34 struct tlbe shadow_tlb[PPC44x_TLB_SIZE];
35};
36
37enum emulation_result {
38 EMULATE_DONE, /* no further processing */
39 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
40 EMULATE_DO_DCR, /* kvm_run filled with DCR request */
41 EMULATE_FAIL, /* can't emulate this instruction */
42};
43
44extern const unsigned char exception_priority[];
45extern const unsigned char priority_exception[];
46
47extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
48extern char kvmppc_handlers_start[];
49extern unsigned long kvmppc_handler_len;
50
51extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
52extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
53 unsigned int rt, unsigned int bytes,
54 int is_bigendian);
55extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
56 u32 val, unsigned int bytes, int is_bigendian);
57
58extern int kvmppc_emulate_instruction(struct kvm_run *run,
59 struct kvm_vcpu *vcpu);
60
61extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn,
62 u64 asid, u32 flags);
63extern void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, u64 eaddr, u64 asid);
64extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
65
66extern void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu);
67
68static inline void kvmppc_queue_exception(struct kvm_vcpu *vcpu, int exception)
69{
70 unsigned int priority = exception_priority[exception];
71 set_bit(priority, &vcpu->arch.pending_exceptions);
72}
73
74static inline void kvmppc_clear_exception(struct kvm_vcpu *vcpu, int exception)
75{
76 unsigned int priority = exception_priority[exception];
77 clear_bit(priority, &vcpu->arch.pending_exceptions);
78}
79
80static inline void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
81{
82 if ((new_msr & MSR_PR) != (vcpu->arch.msr & MSR_PR))
83 kvmppc_mmu_priv_switch(vcpu, new_msr & MSR_PR);
84
85 vcpu->arch.msr = new_msr;
86}
87
88#endif /* __POWERPC_KVM_PPC_H__ */
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