2 * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
4 * Author: Yu Liu, yu.liu@freescale.com
7 * This file is based on arch/powerpc/kvm/44x_tlb.c,
8 * by Hollis Blanchard <hollisb@us.ibm.com>.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License, version 2, as
12 * published by the Free Software Foundation.
15 #include <linux/types.h>
16 #include <linux/slab.h>
17 #include <linux/string.h>
18 #include <linux/kvm.h>
19 #include <linux/kvm_host.h>
20 #include <linux/highmem.h>
21 #include <asm/kvm_ppc.h>
22 #include <asm/kvm_e500.h>
24 #include "../mm/mmu_decl.h"
29 #define to_htlb1_esel(esel) (tlb1_entry_num - (esel) - 1)
31 static unsigned int tlb1_entry_num;
33 void kvmppc_dump_tlbs(struct kvm_vcpu *vcpu)
35 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
39 printk("| %8s | %8s | %8s | %8s | %8s |\n",
40 "nr", "mas1", "mas2", "mas3", "mas7");
42 for (tlbsel = 0; tlbsel < 2; tlbsel++) {
43 printk("Guest TLB%d:\n", tlbsel);
44 for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++) {
45 tlbe = &vcpu_e500->guest_tlb[tlbsel][i];
46 if (tlbe->mas1 & MAS1_VALID)
47 printk(" G[%d][%3d] | %08X | %08X | %08X | %08X |\n",
48 tlbsel, i, tlbe->mas1, tlbe->mas2,
49 tlbe->mas3, tlbe->mas7);
53 for (tlbsel = 0; tlbsel < 2; tlbsel++) {
54 printk("Shadow TLB%d:\n", tlbsel);
55 for (i = 0; i < vcpu_e500->shadow_tlb_size[tlbsel]; i++) {
56 tlbe = &vcpu_e500->shadow_tlb[tlbsel][i];
57 if (tlbe->mas1 & MAS1_VALID)
58 printk(" S[%d][%3d] | %08X | %08X | %08X | %08X |\n",
59 tlbsel, i, tlbe->mas1, tlbe->mas2,
60 tlbe->mas3, tlbe->mas7);
65 static inline unsigned int tlb0_get_next_victim(
66 struct kvmppc_vcpu_e500 *vcpu_e500)
70 victim = vcpu_e500->guest_tlb_nv[0]++;
71 if (unlikely(vcpu_e500->guest_tlb_nv[0] >= KVM_E500_TLB0_WAY_NUM))
72 vcpu_e500->guest_tlb_nv[0] = 0;
77 static inline unsigned int tlb1_max_shadow_size(void)
79 return tlb1_entry_num - tlbcam_index;
82 static inline int tlbe_is_writable(struct tlbe *tlbe)
84 return tlbe->mas3 & (MAS3_SW|MAS3_UW);
87 static inline u32 e500_shadow_mas3_attrib(u32 mas3, int usermode)
89 /* Mask off reserved bits. */
90 mas3 &= MAS3_ATTRIB_MASK;
93 /* Guest is in supervisor mode,
94 * so we need to translate guest
95 * supervisor permissions into user permissions. */
96 mas3 &= ~E500_TLB_USER_PERM_MASK;
97 mas3 |= (mas3 & E500_TLB_SUPER_PERM_MASK) << 1;
100 return mas3 | E500_TLB_SUPER_PERM_MASK;
103 static inline u32 e500_shadow_mas2_attrib(u32 mas2, int usermode)
106 return (mas2 & MAS2_ATTRIB_MASK) | MAS2_M;
108 return mas2 & MAS2_ATTRIB_MASK;
113 * writing shadow tlb entry to host TLB
115 static inline void __write_host_tlbe(struct tlbe *stlbe)
117 mtspr(SPRN_MAS1, stlbe->mas1);
118 mtspr(SPRN_MAS2, stlbe->mas2);
119 mtspr(SPRN_MAS3, stlbe->mas3);
120 mtspr(SPRN_MAS7, stlbe->mas7);
121 __asm__ __volatile__ ("tlbwe\n" : : );
124 static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
125 int tlbsel, int esel)
127 struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
131 __write_host_tlbe(stlbe);
133 unsigned register mas0;
135 mas0 = mfspr(SPRN_MAS0);
137 mtspr(SPRN_MAS0, MAS0_TLBSEL(1) | MAS0_ESEL(to_htlb1_esel(esel)));
138 __write_host_tlbe(stlbe);
140 mtspr(SPRN_MAS0, mas0);
145 void kvmppc_e500_tlb_load(struct kvm_vcpu *vcpu, int cpu)
147 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
149 unsigned register mas0;
151 /* Load all valid TLB1 entries to reduce guest tlb miss fault */
153 mas0 = mfspr(SPRN_MAS0);
154 for (i = 0; i < tlb1_max_shadow_size(); i++) {
155 struct tlbe *stlbe = &vcpu_e500->shadow_tlb[1][i];
157 if (get_tlb_v(stlbe)) {
158 mtspr(SPRN_MAS0, MAS0_TLBSEL(1)
159 | MAS0_ESEL(to_htlb1_esel(i)));
160 __write_host_tlbe(stlbe);
163 mtspr(SPRN_MAS0, mas0);
167 void kvmppc_e500_tlb_put(struct kvm_vcpu *vcpu)
172 /* Search the guest TLB for a matching entry. */
173 static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500,
174 gva_t eaddr, int tlbsel, unsigned int pid, int as)
178 /* XXX Replace loop with fancy data structures. */
179 for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++) {
180 struct tlbe *tlbe = &vcpu_e500->guest_tlb[tlbsel][i];
183 if (eaddr < get_tlb_eaddr(tlbe))
186 if (eaddr > get_tlb_end(tlbe))
189 tid = get_tlb_tid(tlbe);
190 if (tid && (tid != pid))
193 if (!get_tlb_v(tlbe))
196 if (get_tlb_ts(tlbe) != as && as != -1)
205 static void kvmppc_e500_shadow_release(struct kvmppc_vcpu_e500 *vcpu_e500,
206 int tlbsel, int esel)
208 struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
209 struct page *page = vcpu_e500->shadow_pages[tlbsel][esel];
212 vcpu_e500->shadow_pages[tlbsel][esel] = NULL;
214 if (get_tlb_v(stlbe)) {
215 if (tlbe_is_writable(stlbe))
216 kvm_release_page_dirty(page);
218 kvm_release_page_clean(page);
223 static void kvmppc_e500_stlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
224 int tlbsel, int esel)
226 struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
228 kvmppc_e500_shadow_release(vcpu_e500, tlbsel, esel);
230 trace_kvm_stlb_inval(index_of(tlbsel, esel));
233 static void kvmppc_e500_tlb1_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
234 gva_t eaddr, gva_t eend, u32 tid)
236 unsigned int pid = tid & 0xff;
239 /* XXX Replace loop with fancy data structures. */
240 for (i = 0; i < vcpu_e500->guest_tlb_size[1]; i++) {
241 struct tlbe *stlbe = &vcpu_e500->shadow_tlb[1][i];
244 if (!get_tlb_v(stlbe))
247 if (eend < get_tlb_eaddr(stlbe))
250 if (eaddr > get_tlb_end(stlbe))
253 tid = get_tlb_tid(stlbe);
254 if (tid && (tid != pid))
257 kvmppc_e500_stlbe_invalidate(vcpu_e500, 1, i);
258 write_host_tlbe(vcpu_e500, 1, i);
262 static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu,
263 unsigned int eaddr, int as)
265 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
266 unsigned int victim, pidsel, tsized;
269 /* since we only have two TLBs, only lower bit is used. */
270 tlbsel = (vcpu_e500->mas4 >> 28) & 0x1;
271 victim = (tlbsel == 0) ? tlb0_get_next_victim(vcpu_e500) : 0;
272 pidsel = (vcpu_e500->mas4 >> 16) & 0xf;
273 tsized = (vcpu_e500->mas4 >> 7) & 0x1f;
275 vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim)
276 | MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
277 vcpu_e500->mas1 = MAS1_VALID | (as ? MAS1_TS : 0)
278 | MAS1_TID(vcpu_e500->pid[pidsel])
279 | MAS1_TSIZE(tsized);
280 vcpu_e500->mas2 = (eaddr & MAS2_EPN)
281 | (vcpu_e500->mas4 & MAS2_ATTRIB_MASK);
282 vcpu_e500->mas3 &= MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3;
283 vcpu_e500->mas6 = (vcpu_e500->mas6 & MAS6_SPID1)
284 | (get_cur_pid(vcpu) << 16)
285 | (as ? MAS6_SAS : 0);
289 static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
290 u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe, int tlbsel, int esel)
292 struct page *new_page;
296 stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
298 /* Get reference to new page. */
299 new_page = gfn_to_page(vcpu_e500->vcpu.kvm, gfn);
300 if (is_error_page(new_page)) {
301 printk(KERN_ERR "Couldn't get guest page for gfn %lx!\n",
303 kvm_release_page_clean(new_page);
306 hpaddr = page_to_phys(new_page);
308 /* Drop reference to old page. */
309 kvmppc_e500_shadow_release(vcpu_e500, tlbsel, esel);
311 vcpu_e500->shadow_pages[tlbsel][esel] = new_page;
313 /* Force TS=1 IPROT=0 TSIZE=4KB for all guest mappings. */
314 stlbe->mas1 = MAS1_TSIZE(BOOK3E_PAGESZ_4K)
315 | MAS1_TID(get_tlb_tid(gtlbe)) | MAS1_TS | MAS1_VALID;
316 stlbe->mas2 = (gvaddr & MAS2_EPN)
317 | e500_shadow_mas2_attrib(gtlbe->mas2,
318 vcpu_e500->vcpu.arch.shared->msr & MSR_PR);
319 stlbe->mas3 = (hpaddr & MAS3_RPN)
320 | e500_shadow_mas3_attrib(gtlbe->mas3,
321 vcpu_e500->vcpu.arch.shared->msr & MSR_PR);
322 stlbe->mas7 = (hpaddr >> 32) & MAS7_RPN;
324 trace_kvm_stlb_write(index_of(tlbsel, esel), stlbe->mas1, stlbe->mas2,
325 stlbe->mas3, stlbe->mas7);
328 /* XXX only map the one-one case, for now use TLB0 */
329 static int kvmppc_e500_stlbe_map(struct kvmppc_vcpu_e500 *vcpu_e500,
330 int tlbsel, int esel)
334 gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
336 kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe),
337 get_tlb_raddr(gtlbe) >> PAGE_SHIFT,
338 gtlbe, tlbsel, esel);
343 /* Caller must ensure that the specified guest TLB entry is safe to insert into
345 /* XXX for both one-one and one-to-many , for now use TLB1 */
346 static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
347 u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe)
351 victim = vcpu_e500->guest_tlb_nv[1]++;
353 if (unlikely(vcpu_e500->guest_tlb_nv[1] >= tlb1_max_shadow_size()))
354 vcpu_e500->guest_tlb_nv[1] = 0;
356 kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, victim);
361 /* Invalidate all guest kernel mappings when enter usermode,
362 * so that when they fault back in they will get the
363 * proper permission bits. */
364 void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode)
367 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
370 /* XXX Replace loop with fancy data structures. */
371 for (i = 0; i < tlb1_max_shadow_size(); i++)
372 kvmppc_e500_stlbe_invalidate(vcpu_e500, 1, i);
378 static int kvmppc_e500_gtlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
379 int tlbsel, int esel)
381 struct tlbe *gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
383 if (unlikely(get_tlb_iprot(gtlbe)))
387 kvmppc_e500_tlb1_invalidate(vcpu_e500, get_tlb_eaddr(gtlbe),
391 kvmppc_e500_stlbe_invalidate(vcpu_e500, tlbsel, esel);
399 int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value)
403 if (value & MMUCSR0_TLB0FI)
404 for (esel = 0; esel < vcpu_e500->guest_tlb_size[0]; esel++)
405 kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel);
406 if (value & MMUCSR0_TLB1FI)
407 for (esel = 0; esel < vcpu_e500->guest_tlb_size[1]; esel++)
408 kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel);
415 int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb)
417 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
422 ea = ((ra) ? kvmppc_get_gpr(vcpu, ra) : 0) + kvmppc_get_gpr(vcpu, rb);
424 ia = (ea >> 2) & 0x1;
426 /* since we only have two TLBs, only lower bit is used. */
427 tlbsel = (ea >> 3) & 0x1;
430 /* invalidate all entries */
431 for (esel = 0; esel < vcpu_e500->guest_tlb_size[tlbsel]; esel++)
432 kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
435 esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel,
436 get_cur_pid(vcpu), -1);
438 kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
446 int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu)
448 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
452 tlbsel = get_tlb_tlbsel(vcpu_e500);
453 esel = get_tlb_esel(vcpu_e500, tlbsel);
455 gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
456 vcpu_e500->mas0 &= ~MAS0_NV(~0);
457 vcpu_e500->mas0 |= MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
458 vcpu_e500->mas1 = gtlbe->mas1;
459 vcpu_e500->mas2 = gtlbe->mas2;
460 vcpu_e500->mas3 = gtlbe->mas3;
461 vcpu_e500->mas7 = gtlbe->mas7;
466 int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb)
468 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
469 int as = !!get_cur_sas(vcpu_e500);
470 unsigned int pid = get_cur_spid(vcpu_e500);
472 struct tlbe *gtlbe = NULL;
475 ea = kvmppc_get_gpr(vcpu, rb);
477 for (tlbsel = 0; tlbsel < 2; tlbsel++) {
478 esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, as);
480 gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
486 vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel)
487 | MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
488 vcpu_e500->mas1 = gtlbe->mas1;
489 vcpu_e500->mas2 = gtlbe->mas2;
490 vcpu_e500->mas3 = gtlbe->mas3;
491 vcpu_e500->mas7 = gtlbe->mas7;
495 /* since we only have two TLBs, only lower bit is used. */
496 tlbsel = vcpu_e500->mas4 >> 28 & 0x1;
497 victim = (tlbsel == 0) ? tlb0_get_next_victim(vcpu_e500) : 0;
499 vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim)
500 | MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
501 vcpu_e500->mas1 = (vcpu_e500->mas6 & MAS6_SPID0)
502 | (vcpu_e500->mas6 & (MAS6_SAS ? MAS1_TS : 0))
503 | (vcpu_e500->mas4 & MAS4_TSIZED(~0));
504 vcpu_e500->mas2 &= MAS2_EPN;
505 vcpu_e500->mas2 |= vcpu_e500->mas4 & MAS2_ATTRIB_MASK;
506 vcpu_e500->mas3 &= MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3;
510 kvmppc_set_exit_type(vcpu, EMULATED_TLBSX_EXITS);
514 int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
516 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
521 int tlbsel, esel, stlbsel, sesel;
523 tlbsel = get_tlb_tlbsel(vcpu_e500);
524 esel = get_tlb_esel(vcpu_e500, tlbsel);
526 gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
528 if (get_tlb_v(gtlbe) && tlbsel == 1) {
529 eaddr = get_tlb_eaddr(gtlbe);
530 tid = get_tlb_tid(gtlbe);
531 kvmppc_e500_tlb1_invalidate(vcpu_e500, eaddr,
532 get_tlb_end(gtlbe), tid);
535 gtlbe->mas1 = vcpu_e500->mas1;
536 gtlbe->mas2 = vcpu_e500->mas2;
537 gtlbe->mas3 = vcpu_e500->mas3;
538 gtlbe->mas7 = vcpu_e500->mas7;
540 trace_kvm_gtlb_write(vcpu_e500->mas0, gtlbe->mas1, gtlbe->mas2,
541 gtlbe->mas3, gtlbe->mas7);
543 /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */
544 if (tlbe_is_host_safe(vcpu, gtlbe)) {
548 gtlbe->mas1 &= ~MAS1_TSIZE(~0);
549 gtlbe->mas1 |= MAS1_TSIZE(BOOK3E_PAGESZ_4K);
552 sesel = kvmppc_e500_stlbe_map(vcpu_e500, 0, esel);
558 eaddr = get_tlb_eaddr(gtlbe);
559 raddr = get_tlb_raddr(gtlbe);
561 /* Create a 4KB mapping on the host.
562 * If the guest wanted a large page,
563 * only the first 4KB is mapped here and the rest
564 * are mapped on the fly. */
566 sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr,
567 raddr >> PAGE_SHIFT, gtlbe);
573 write_host_tlbe(vcpu_e500, stlbsel, sesel);
576 kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS);
580 int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr)
582 unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS);
584 return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as);
587 int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr)
589 unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS);
591 return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as);
594 void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu)
596 unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS);
598 kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.pc, as);
601 void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu)
603 unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS);
605 kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.fault_dear, as);
608 gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index,
611 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
613 &vcpu_e500->guest_tlb[tlbsel_of(index)][esel_of(index)];
614 u64 pgmask = get_tlb_bytes(gtlbe) - 1;
616 return get_tlb_raddr(gtlbe) | (eaddr & pgmask);
619 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
621 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
624 for (tlbsel = 0; tlbsel < 2; tlbsel++)
625 for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++)
626 kvmppc_e500_shadow_release(vcpu_e500, tlbsel, i);
628 /* discard all guest mapping */
632 void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
635 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
636 int tlbsel = tlbsel_of(index);
637 int esel = esel_of(index);
647 gfn_t gfn = gpaddr >> PAGE_SHIFT;
649 = &vcpu_e500->guest_tlb[tlbsel][esel];
652 sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn, gtlbe);
660 write_host_tlbe(vcpu_e500, stlbsel, sesel);
663 int kvmppc_e500_tlb_search(struct kvm_vcpu *vcpu,
664 gva_t eaddr, unsigned int pid, int as)
666 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
669 for (tlbsel = 0; tlbsel < 2; tlbsel++) {
670 esel = kvmppc_e500_tlb_index(vcpu_e500, eaddr, tlbsel, pid, as);
672 return index_of(tlbsel, esel);
678 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid)
680 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
682 vcpu_e500->pid[0] = vcpu->arch.shadow_pid =
683 vcpu->arch.pid = pid;
686 void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *vcpu_e500)
690 /* Insert large initial mapping for guest. */
691 tlbe = &vcpu_e500->guest_tlb[1][0];
692 tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_256M);
694 tlbe->mas3 = E500_TLB_SUPER_PERM_MASK;
697 /* 4K map for serial output. Used by kernel wrapper. */
698 tlbe = &vcpu_e500->guest_tlb[1][1];
699 tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_4K);
700 tlbe->mas2 = (0xe0004500 & 0xFFFFF000) | MAS2_I | MAS2_G;
701 tlbe->mas3 = (0xe0004500 & 0xFFFFF000) | E500_TLB_SUPER_PERM_MASK;
705 int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
707 tlb1_entry_num = mfspr(SPRN_TLB1CFG) & 0xFFF;
709 vcpu_e500->guest_tlb_size[0] = KVM_E500_TLB0_SIZE;
710 vcpu_e500->guest_tlb[0] =
711 kzalloc(sizeof(struct tlbe) * KVM_E500_TLB0_SIZE, GFP_KERNEL);
712 if (vcpu_e500->guest_tlb[0] == NULL)
715 vcpu_e500->shadow_tlb_size[0] = KVM_E500_TLB0_SIZE;
716 vcpu_e500->shadow_tlb[0] =
717 kzalloc(sizeof(struct tlbe) * KVM_E500_TLB0_SIZE, GFP_KERNEL);
718 if (vcpu_e500->shadow_tlb[0] == NULL)
721 vcpu_e500->guest_tlb_size[1] = KVM_E500_TLB1_SIZE;
722 vcpu_e500->guest_tlb[1] =
723 kzalloc(sizeof(struct tlbe) * KVM_E500_TLB1_SIZE, GFP_KERNEL);
724 if (vcpu_e500->guest_tlb[1] == NULL)
725 goto err_out_shadow0;
727 vcpu_e500->shadow_tlb_size[1] = tlb1_entry_num;
728 vcpu_e500->shadow_tlb[1] =
729 kzalloc(sizeof(struct tlbe) * tlb1_entry_num, GFP_KERNEL);
730 if (vcpu_e500->shadow_tlb[1] == NULL)
733 vcpu_e500->shadow_pages[0] = (struct page **)
734 kzalloc(sizeof(struct page *) * KVM_E500_TLB0_SIZE, GFP_KERNEL);
735 if (vcpu_e500->shadow_pages[0] == NULL)
736 goto err_out_shadow1;
738 vcpu_e500->shadow_pages[1] = (struct page **)
739 kzalloc(sizeof(struct page *) * tlb1_entry_num, GFP_KERNEL);
740 if (vcpu_e500->shadow_pages[1] == NULL)
743 /* Init TLB configuration register */
744 vcpu_e500->tlb0cfg = mfspr(SPRN_TLB0CFG) & ~0xfffUL;
745 vcpu_e500->tlb0cfg |= vcpu_e500->guest_tlb_size[0];
746 vcpu_e500->tlb1cfg = mfspr(SPRN_TLB1CFG) & ~0xfffUL;
747 vcpu_e500->tlb1cfg |= vcpu_e500->guest_tlb_size[1];
752 kfree(vcpu_e500->shadow_pages[0]);
754 kfree(vcpu_e500->shadow_tlb[1]);
756 kfree(vcpu_e500->guest_tlb[1]);
758 kfree(vcpu_e500->shadow_tlb[0]);
760 kfree(vcpu_e500->guest_tlb[0]);
765 void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500)
767 kfree(vcpu_e500->shadow_pages[1]);
768 kfree(vcpu_e500->shadow_pages[0]);
769 kfree(vcpu_e500->shadow_tlb[1]);
770 kfree(vcpu_e500->guest_tlb[1]);
771 kfree(vcpu_e500->shadow_tlb[0]);
772 kfree(vcpu_e500->guest_tlb[0]);