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 __LINUX_KVM_POWERPC_H
21 #define __LINUX_KVM_POWERPC_H
22 
23 #include <linux/types.h>
24 
25 /* Select powerpc specific features in <linux/kvm.h> */
26 #define __KVM_HAVE_SPAPR_TCE
27 #define __KVM_HAVE_PPC_SMT
28 
29 struct kvm_regs {
30 	__u64 pc;
31 	__u64 cr;
32 	__u64 ctr;
33 	__u64 lr;
34 	__u64 xer;
35 	__u64 msr;
36 	__u64 srr0;
37 	__u64 srr1;
38 	__u64 pid;
39 
40 	__u64 sprg0;
41 	__u64 sprg1;
42 	__u64 sprg2;
43 	__u64 sprg3;
44 	__u64 sprg4;
45 	__u64 sprg5;
46 	__u64 sprg6;
47 	__u64 sprg7;
48 
49 	__u64 gpr[32];
50 };
51 
52 #define KVM_SREGS_E_IMPL_NONE	0
53 #define KVM_SREGS_E_IMPL_FSL	1
54 
55 #define KVM_SREGS_E_FSL_PIDn	(1 << 0) /* PID1/PID2 */
56 
57 /*
58  * Feature bits indicate which sections of the sregs struct are valid,
59  * both in KVM_GET_SREGS and KVM_SET_SREGS.  On KVM_SET_SREGS, registers
60  * corresponding to unset feature bits will not be modified.  This allows
61  * restoring a checkpoint made without that feature, while keeping the
62  * default values of the new registers.
63  *
64  * KVM_SREGS_E_BASE contains:
65  * CSRR0/1 (refers to SRR2/3 on 40x)
66  * ESR
67  * DEAR
68  * MCSR
69  * TSR
70  * TCR
71  * DEC
72  * TB
73  * VRSAVE (USPRG0)
74  */
75 #define KVM_SREGS_E_BASE		(1 << 0)
76 
77 /*
78  * KVM_SREGS_E_ARCH206 contains:
79  *
80  * PIR
81  * MCSRR0/1
82  * DECAR
83  * IVPR
84  */
85 #define KVM_SREGS_E_ARCH206		(1 << 1)
86 
87 /*
88  * Contains EPCR, plus the upper half of 64-bit registers
89  * that are 32-bit on 32-bit implementations.
90  */
91 #define KVM_SREGS_E_64			(1 << 2)
92 
93 #define KVM_SREGS_E_SPRG8		(1 << 3)
94 #define KVM_SREGS_E_MCIVPR		(1 << 4)
95 
96 /*
97  * IVORs are used -- contains IVOR0-15, plus additional IVORs
98  * in combination with an appropriate feature bit.
99  */
100 #define KVM_SREGS_E_IVOR		(1 << 5)
101 
102 /*
103  * Contains MAS0-4, MAS6-7, TLBnCFG, MMUCFG.
104  * Also TLBnPS if MMUCFG[MAVN] = 1.
105  */
106 #define KVM_SREGS_E_ARCH206_MMU		(1 << 6)
107 
108 /* DBSR, DBCR, IAC, DAC, DVC */
109 #define KVM_SREGS_E_DEBUG		(1 << 7)
110 
111 /* Enhanced debug -- DSRR0/1, SPRG9 */
112 #define KVM_SREGS_E_ED			(1 << 8)
113 
114 /* Embedded Floating Point (SPE) -- IVOR32-34 if KVM_SREGS_E_IVOR */
115 #define KVM_SREGS_E_SPE			(1 << 9)
116 
117 /* External Proxy (EXP) -- EPR */
118 #define KVM_SREGS_EXP			(1 << 10)
119 
120 /* External PID (E.PD) -- EPSC/EPLC */
121 #define KVM_SREGS_E_PD			(1 << 11)
122 
123 /* Processor Control (E.PC) -- IVOR36-37 if KVM_SREGS_E_IVOR */
124 #define KVM_SREGS_E_PC			(1 << 12)
125 
126 /* Page table (E.PT) -- EPTCFG */
127 #define KVM_SREGS_E_PT			(1 << 13)
128 
129 /* Embedded Performance Monitor (E.PM) -- IVOR35 if KVM_SREGS_E_IVOR */
130 #define KVM_SREGS_E_PM			(1 << 14)
131 
132 /*
133  * Special updates:
134  *
135  * Some registers may change even while a vcpu is not running.
136  * To avoid losing these changes, by default these registers are
137  * not updated by KVM_SET_SREGS.  To force an update, set the bit
138  * in u.e.update_special corresponding to the register to be updated.
139  *
140  * The update_special field is zero on return from KVM_GET_SREGS.
141  *
142  * When restoring a checkpoint, the caller can set update_special
143  * to 0xffffffff to ensure that everything is restored, even new features
144  * that the caller doesn't know about.
145  */
146 #define KVM_SREGS_E_UPDATE_MCSR		(1 << 0)
147 #define KVM_SREGS_E_UPDATE_TSR		(1 << 1)
148 #define KVM_SREGS_E_UPDATE_DEC		(1 << 2)
149 #define KVM_SREGS_E_UPDATE_DBSR		(1 << 3)
150 
151 /*
152  * In KVM_SET_SREGS, reserved/pad fields must be left untouched from a
153  * previous KVM_GET_REGS.
154  *
155  * Unless otherwise indicated, setting any register with KVM_SET_SREGS
156  * directly sets its value.  It does not trigger any special semantics such
157  * as write-one-to-clear.  Calling KVM_SET_SREGS on an unmodified struct
158  * just received from KVM_GET_SREGS is always a no-op.
159  */
160 struct kvm_sregs {
161 	__u32 pvr;
162 	union {
163 		struct {
164 			__u64 sdr1;
165 			struct {
166 				struct {
167 					__u64 slbe;
168 					__u64 slbv;
169 				} slb[64];
170 			} ppc64;
171 			struct {
172 				__u32 sr[16];
173 				__u64 ibat[8];
174 				__u64 dbat[8];
175 			} ppc32;
176 		} s;
177 		struct {
178 			union {
179 				struct { /* KVM_SREGS_E_IMPL_FSL */
180 					__u32 features; /* KVM_SREGS_E_FSL_ */
181 					__u32 svr;
182 					__u64 mcar;
183 					__u32 hid0;
184 
185 					/* KVM_SREGS_E_FSL_PIDn */
186 					__u32 pid1, pid2;
187 				} fsl;
188 				__u8 pad[256];
189 			} impl;
190 
191 			__u32 features; /* KVM_SREGS_E_ */
192 			__u32 impl_id;	/* KVM_SREGS_E_IMPL_ */
193 			__u32 update_special; /* KVM_SREGS_E_UPDATE_ */
194 			__u32 pir;	/* read-only */
195 			__u64 sprg8;
196 			__u64 sprg9;	/* E.ED */
197 			__u64 csrr0;
198 			__u64 dsrr0;	/* E.ED */
199 			__u64 mcsrr0;
200 			__u32 csrr1;
201 			__u32 dsrr1;	/* E.ED */
202 			__u32 mcsrr1;
203 			__u32 esr;
204 			__u64 dear;
205 			__u64 ivpr;
206 			__u64 mcivpr;
207 			__u64 mcsr;	/* KVM_SREGS_E_UPDATE_MCSR */
208 
209 			__u32 tsr;	/* KVM_SREGS_E_UPDATE_TSR */
210 			__u32 tcr;
211 			__u32 decar;
212 			__u32 dec;	/* KVM_SREGS_E_UPDATE_DEC */
213 
214 			/*
215 			 * Userspace can read TB directly, but the
216 			 * value reported here is consistent with "dec".
217 			 *
218 			 * Read-only.
219 			 */
220 			__u64 tb;
221 
222 			__u32 dbsr;	/* KVM_SREGS_E_UPDATE_DBSR */
223 			__u32 dbcr[3];
224 			__u32 iac[4];
225 			__u32 dac[2];
226 			__u32 dvc[2];
227 			__u8 num_iac;	/* read-only */
228 			__u8 num_dac;	/* read-only */
229 			__u8 num_dvc;	/* read-only */
230 			__u8 pad;
231 
232 			__u32 epr;	/* EXP */
233 			__u32 vrsave;	/* a.k.a. USPRG0 */
234 			__u32 epcr;	/* KVM_SREGS_E_64 */
235 
236 			__u32 mas0;
237 			__u32 mas1;
238 			__u64 mas2;
239 			__u64 mas7_3;
240 			__u32 mas4;
241 			__u32 mas6;
242 
243 			__u32 ivor_low[16]; /* IVOR0-15 */
244 			__u32 ivor_high[18]; /* IVOR32+, plus room to expand */
245 
246 			__u32 mmucfg;	/* read-only */
247 			__u32 eptcfg;	/* E.PT, read-only */
248 			__u32 tlbcfg[4];/* read-only */
249 			__u32 tlbps[4]; /* read-only */
250 
251 			__u32 eplc, epsc; /* E.PD */
252 		} e;
253 		__u8 pad[1020];
254 	} u;
255 };
256 
257 struct kvm_fpu {
258 	__u64 fpr[32];
259 };
260 
261 struct kvm_debug_exit_arch {
262 };
263 
264 /* for KVM_SET_GUEST_DEBUG */
265 struct kvm_guest_debug_arch {
266 };
267 
268 /* definition of registers in kvm_run */
269 struct kvm_sync_regs {
270 };
271 
272 #define KVM_INTERRUPT_SET	-1U
273 #define KVM_INTERRUPT_UNSET	-2U
274 #define KVM_INTERRUPT_SET_LEVEL	-3U
275 
276 #define KVM_CPU_440		1
277 #define KVM_CPU_E500V2		2
278 #define KVM_CPU_3S_32		3
279 #define KVM_CPU_3S_64		4
280 
281 /* for KVM_CAP_SPAPR_TCE */
282 struct kvm_create_spapr_tce {
283 	__u64 liobn;
284 	__u32 window_size;
285 };
286 
287 /* for KVM_ALLOCATE_RMA */
288 struct kvm_allocate_rma {
289 	__u64 rma_size;
290 };
291 
292 struct kvm_book3e_206_tlb_entry {
293 	__u32 mas8;
294 	__u32 mas1;
295 	__u64 mas2;
296 	__u64 mas7_3;
297 };
298 
299 struct kvm_book3e_206_tlb_params {
300 	/*
301 	 * For mmu types KVM_MMU_FSL_BOOKE_NOHV and KVM_MMU_FSL_BOOKE_HV:
302 	 *
303 	 * - The number of ways of TLB0 must be a power of two between 2 and
304 	 *   16.
305 	 * - TLB1 must be fully associative.
306 	 * - The size of TLB0 must be a multiple of the number of ways, and
307 	 *   the number of sets must be a power of two.
308 	 * - The size of TLB1 may not exceed 64 entries.
309 	 * - TLB0 supports 4 KiB pages.
310 	 * - The page sizes supported by TLB1 are as indicated by
311 	 *   TLB1CFG (if MMUCFG[MAVN] = 0) or TLB1PS (if MMUCFG[MAVN] = 1)
312 	 *   as returned by KVM_GET_SREGS.
313 	 * - TLB2 and TLB3 are reserved, and their entries in tlb_sizes[]
314 	 *   and tlb_ways[] must be zero.
315 	 *
316 	 * tlb_ways[n] = tlb_sizes[n] means the array is fully associative.
317 	 *
318 	 * KVM will adjust TLBnCFG based on the sizes configured here,
319 	 * though arrays greater than 2048 entries will have TLBnCFG[NENTRY]
320 	 * set to zero.
321 	 */
322 	__u32 tlb_sizes[4];
323 	__u32 tlb_ways[4];
324 	__u32 reserved[8];
325 };
326 
327 #define KVM_REG_PPC_HIOR	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x1)
328 
329 #endif /* __LINUX_KVM_POWERPC_H */
330