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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 - 2006 Jakub Jermar |
2 | * Copyright (C) 2005 - 2006 Jakub Jermar |
3 | * Copyright (C) 2006 Jakub Vana |
3 | * Copyright (C) 2006 Jakub Vana |
4 | * All rights reserved. |
4 | * All rights reserved. |
5 | * |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
8 | * are met: |
9 | * |
9 | * |
10 | * - Redistributions of source code must retain the above copyright |
10 | * - Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * - Redistributions in binary form must reproduce the above copyright |
12 | * - Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
14 | * documentation and/or other materials provided with the distribution. |
15 | * - The name of the author may not be used to endorse or promote products |
15 | * - The name of the author may not be used to endorse or promote products |
16 | * derived from this software without specific prior written permission. |
16 | * derived from this software without specific prior written permission. |
17 | * |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
28 | */ |
29 | 29 | ||
30 | #ifndef __ia64_PAGE_H__ |
30 | #ifndef __ia64_PAGE_H__ |
31 | #define __ia64_PAGE_H__ |
31 | #define __ia64_PAGE_H__ |
32 | 32 | ||
33 | #include <arch/mm/frame.h> |
33 | #include <arch/mm/frame.h> |
34 | 34 | ||
35 | #define PAGE_SIZE FRAME_SIZE |
35 | #define PAGE_SIZE FRAME_SIZE |
36 | #define PAGE_WIDTH FRAME_WIDTH |
36 | #define PAGE_WIDTH FRAME_WIDTH |
37 | 37 | ||
38 | 38 | ||
39 | #ifdef KERNEL |
39 | #ifdef KERNEL |
40 | 40 | ||
41 | /** Bit width of the TLB-locked portion of kernel address space. */ |
41 | /** Bit width of the TLB-locked portion of kernel address space. */ |
42 | #define KERNEL_PAGE_WIDTH 28 /* 256M */ |
42 | #define KERNEL_PAGE_WIDTH 28 /* 256M */ |
43 | 43 | ||
44 | #define PPN_SHIFT 12 |
44 | #define PPN_SHIFT 12 |
45 | 45 | ||
46 | #define VRN_SHIFT 61 |
46 | #define VRN_SHIFT 61 |
47 | #define VRN_MASK (7LL << VRN_SHIFT) |
47 | #define VRN_MASK (7LL << VRN_SHIFT) |
48 | #define VA2VRN(va) ((va)>>VRN_SHIFT) |
48 | #define VA2VRN(va) ((va)>>VRN_SHIFT) |
49 | 49 | ||
50 | #ifdef __ASM__ |
50 | #ifdef __ASM__ |
51 | #define VRN_KERNEL 7 |
51 | #define VRN_KERNEL 7 |
52 | #else |
52 | #else |
53 | #define VRN_KERNEL 7LL |
53 | #define VRN_KERNEL 7LL |
54 | #endif |
54 | #endif |
55 | 55 | ||
56 | #define REGION_REGISTERS 8 |
56 | #define REGION_REGISTERS 8 |
57 | 57 | ||
58 | #define KA2PA(x) ((__address) (x-(VRN_KERNEL<<VRN_SHIFT))) |
58 | #define KA2PA(x) ((__address) (x-(VRN_KERNEL<<VRN_SHIFT))) |
59 | #define PA2KA(x) ((__address) (x+(VRN_KERNEL<<VRN_SHIFT))) |
59 | #define PA2KA(x) ((__address) (x+(VRN_KERNEL<<VRN_SHIFT))) |
60 | 60 | ||
61 | #define VHPT_WIDTH 20 /* 1M */ |
61 | #define VHPT_WIDTH 20 /* 1M */ |
62 | #define VHPT_SIZE (1 << VHPT_WIDTH) |
62 | #define VHPT_SIZE (1 << VHPT_WIDTH) |
63 | #define VHPT_BASE 0 /* Must be aligned to VHPT_SIZE */ |
- | |
64 | 63 | ||
65 | #define PTA_BASE_SHIFT 15 |
64 | #define PTA_BASE_SHIFT 15 |
66 | 65 | ||
67 | /** Memory Attributes. */ |
66 | /** Memory Attributes. */ |
68 | #define MA_WRITEBACK 0x0 |
67 | #define MA_WRITEBACK 0x0 |
69 | #define MA_UNCACHEABLE 0x4 |
68 | #define MA_UNCACHEABLE 0x4 |
70 | 69 | ||
71 | /** Privilege Levels. Only the most and the least privileged ones are ever used. */ |
70 | /** Privilege Levels. Only the most and the least privileged ones are ever used. */ |
72 | #define PL_KERNEL 0x0 |
71 | #define PL_KERNEL 0x0 |
73 | #define PL_USER 0x3 |
72 | #define PL_USER 0x3 |
74 | 73 | ||
75 | /* Access Rigths. Only certain combinations are used by the kernel. */ |
74 | /* Access Rigths. Only certain combinations are used by the kernel. */ |
76 | #define AR_READ 0x0 |
75 | #define AR_READ 0x0 |
77 | #define AR_EXECUTE 0x1 |
76 | #define AR_EXECUTE 0x1 |
78 | #define AR_WRITE 0x2 |
77 | #define AR_WRITE 0x2 |
79 | 78 | ||
80 | #ifndef __ASM__ |
79 | #ifndef __ASM__ |
81 | 80 | ||
82 | #include <arch/mm/frame.h> |
81 | #include <arch/mm/frame.h> |
83 | #include <arch/barrier.h> |
82 | #include <arch/barrier.h> |
84 | #include <genarch/mm/page_ht.h> |
83 | #include <genarch/mm/page_ht.h> |
85 | #include <arch/mm/asid.h> |
84 | #include <arch/mm/asid.h> |
86 | #include <arch/types.h> |
85 | #include <arch/types.h> |
87 | #include <typedefs.h> |
86 | #include <typedefs.h> |
88 | #include <debug.h> |
87 | #include <debug.h> |
89 | 88 | ||
90 | struct vhpt_tag_info { |
89 | struct vhpt_tag_info { |
91 | unsigned long long tag : 63; |
90 | unsigned long long tag : 63; |
92 | unsigned ti : 1; |
91 | unsigned ti : 1; |
93 | } __attribute__ ((packed)); |
92 | } __attribute__ ((packed)); |
94 | 93 | ||
95 | union vhpt_tag { |
94 | union vhpt_tag { |
96 | struct vhpt_tag_info tag_info; |
95 | struct vhpt_tag_info tag_info; |
97 | unsigned tag_word; |
96 | unsigned tag_word; |
98 | }; |
97 | }; |
99 | 98 | ||
100 | struct vhpt_entry_present { |
99 | struct vhpt_entry_present { |
101 | /* Word 0 */ |
100 | /* Word 0 */ |
102 | unsigned p : 1; |
101 | unsigned p : 1; |
103 | unsigned : 1; |
102 | unsigned : 1; |
104 | unsigned ma : 3; |
103 | unsigned ma : 3; |
105 | unsigned a : 1; |
104 | unsigned a : 1; |
106 | unsigned d : 1; |
105 | unsigned d : 1; |
107 | unsigned pl : 2; |
106 | unsigned pl : 2; |
108 | unsigned ar : 3; |
107 | unsigned ar : 3; |
109 | unsigned long long ppn : 38; |
108 | unsigned long long ppn : 38; |
110 | unsigned : 2; |
109 | unsigned : 2; |
111 | unsigned ed : 1; |
110 | unsigned ed : 1; |
112 | unsigned ig1 : 11; |
111 | unsigned ig1 : 11; |
113 | 112 | ||
114 | /* Word 1 */ |
113 | /* Word 1 */ |
115 | unsigned : 2; |
114 | unsigned : 2; |
116 | unsigned ps : 6; |
115 | unsigned ps : 6; |
117 | unsigned key : 24; |
116 | unsigned key : 24; |
118 | unsigned : 32; |
117 | unsigned : 32; |
119 | 118 | ||
120 | /* Word 2 */ |
119 | /* Word 2 */ |
121 | union vhpt_tag tag; |
120 | union vhpt_tag tag; |
122 | 121 | ||
123 | /* Word 3 */ |
122 | /* Word 3 */ |
124 | __u64 ig3 : 64; |
123 | __u64 ig3 : 64; |
125 | } __attribute__ ((packed)); |
124 | } __attribute__ ((packed)); |
126 | 125 | ||
127 | struct vhpt_entry_not_present { |
126 | struct vhpt_entry_not_present { |
128 | /* Word 0 */ |
127 | /* Word 0 */ |
129 | unsigned p : 1; |
128 | unsigned p : 1; |
130 | unsigned long long ig0 : 52; |
129 | unsigned long long ig0 : 52; |
131 | unsigned ig1 : 11; |
130 | unsigned ig1 : 11; |
132 | 131 | ||
133 | /* Word 1 */ |
132 | /* Word 1 */ |
134 | unsigned : 2; |
133 | unsigned : 2; |
135 | unsigned ps : 6; |
134 | unsigned ps : 6; |
136 | unsigned long long ig2 : 56; |
135 | unsigned long long ig2 : 56; |
137 | 136 | ||
138 | /* Word 2 */ |
137 | /* Word 2 */ |
139 | union vhpt_tag tag; |
138 | union vhpt_tag tag; |
140 | 139 | ||
141 | /* Word 3 */ |
140 | /* Word 3 */ |
142 | __u64 ig3 : 64; |
141 | __u64 ig3 : 64; |
143 | } __attribute__ ((packed)); |
142 | } __attribute__ ((packed)); |
144 | 143 | ||
145 | typedef union vhpt_entry { |
144 | typedef union vhpt_entry { |
146 | struct vhpt_entry_present present; |
145 | struct vhpt_entry_present present; |
147 | struct vhpt_entry_not_present not_present; |
146 | struct vhpt_entry_not_present not_present; |
148 | __u64 word[4]; |
147 | __u64 word[4]; |
149 | } vhpt_entry_t; |
148 | } vhpt_entry_t; |
150 | 149 | ||
151 | struct region_register_map { |
150 | struct region_register_map { |
152 | unsigned ve : 1; |
151 | unsigned ve : 1; |
153 | unsigned : 1; |
152 | unsigned : 1; |
154 | unsigned ps : 6; |
153 | unsigned ps : 6; |
155 | unsigned rid : 24; |
154 | unsigned rid : 24; |
156 | unsigned : 32; |
155 | unsigned : 32; |
157 | } __attribute__ ((packed)); |
156 | } __attribute__ ((packed)); |
158 | 157 | ||
159 | typedef union region_register { |
158 | typedef union region_register { |
160 | struct region_register_map map; |
159 | struct region_register_map map; |
161 | unsigned long long word; |
160 | unsigned long long word; |
162 | } region_register; |
161 | } region_register; |
163 | 162 | ||
164 | struct pta_register_map { |
163 | struct pta_register_map { |
165 | unsigned ve : 1; |
164 | unsigned ve : 1; |
166 | unsigned : 1; |
165 | unsigned : 1; |
167 | unsigned size : 6; |
166 | unsigned size : 6; |
168 | unsigned vf : 1; |
167 | unsigned vf : 1; |
169 | unsigned : 6; |
168 | unsigned : 6; |
170 | unsigned long long base : 49; |
169 | unsigned long long base : 49; |
171 | } __attribute__ ((packed)); |
170 | } __attribute__ ((packed)); |
172 | 171 | ||
173 | typedef union pta_register { |
172 | typedef union pta_register { |
174 | struct pta_register_map map; |
173 | struct pta_register_map map; |
175 | __u64 word; |
174 | __u64 word; |
176 | } pta_register; |
175 | } pta_register; |
177 | 176 | ||
178 | /** Return Translation Hashed Entry Address. |
177 | /** Return Translation Hashed Entry Address. |
179 | * |
178 | * |
180 | * VRN bits are used to read RID (ASID) from one |
179 | * VRN bits are used to read RID (ASID) from one |
181 | * of the eight region registers registers. |
180 | * of the eight region registers registers. |
182 | * |
181 | * |
183 | * @param va Virtual address including VRN bits. |
182 | * @param va Virtual address including VRN bits. |
184 | * |
183 | * |
185 | * @return Address of the head of VHPT collision chain. |
184 | * @return Address of the head of VHPT collision chain. |
186 | */ |
185 | */ |
187 | static inline __u64 thash(__u64 va) |
186 | static inline __u64 thash(__u64 va) |
188 | { |
187 | { |
189 | __u64 ret; |
188 | __u64 ret; |
190 | 189 | ||
191 | __asm__ volatile ("thash %0 = %1\n" : "=r" (ret) : "r" (va)); |
190 | __asm__ volatile ("thash %0 = %1\n" : "=r" (ret) : "r" (va)); |
192 | 191 | ||
193 | return ret; |
192 | return ret; |
194 | } |
193 | } |
195 | 194 | ||
196 | /** Return Translation Hashed Entry Tag. |
195 | /** Return Translation Hashed Entry Tag. |
197 | * |
196 | * |
198 | * VRN bits are used to read RID (ASID) from one |
197 | * VRN bits are used to read RID (ASID) from one |
199 | * of the eight region registers. |
198 | * of the eight region registers. |
200 | * |
199 | * |
201 | * @param va Virtual address including VRN bits. |
200 | * @param va Virtual address including VRN bits. |
202 | * |
201 | * |
203 | * @return The unique tag for VPN and RID in the collision chain returned by thash(). |
202 | * @return The unique tag for VPN and RID in the collision chain returned by thash(). |
204 | */ |
203 | */ |
205 | static inline __u64 ttag(__u64 va) |
204 | static inline __u64 ttag(__u64 va) |
206 | { |
205 | { |
207 | __u64 ret; |
206 | __u64 ret; |
208 | 207 | ||
209 | __asm__ volatile ("ttag %0 = %1\n" : "=r" (ret) : "r" (va)); |
208 | __asm__ volatile ("ttag %0 = %1\n" : "=r" (ret) : "r" (va)); |
210 | 209 | ||
211 | return ret; |
210 | return ret; |
212 | } |
211 | } |
213 | 212 | ||
214 | /** Read Region Register. |
213 | /** Read Region Register. |
215 | * |
214 | * |
216 | * @param i Region register index. |
215 | * @param i Region register index. |
217 | * |
216 | * |
218 | * @return Current contents of rr[i]. |
217 | * @return Current contents of rr[i]. |
219 | */ |
218 | */ |
220 | static inline __u64 rr_read(index_t i) |
219 | static inline __u64 rr_read(index_t i) |
221 | { |
220 | { |
222 | __u64 ret; |
221 | __u64 ret; |
223 | ASSERT(i < REGION_REGISTERS); |
222 | ASSERT(i < REGION_REGISTERS); |
224 | __asm__ volatile ("mov %0 = rr[%1]\n" : "=r" (ret) : "r" (i << VRN_SHIFT)); |
223 | __asm__ volatile ("mov %0 = rr[%1]\n" : "=r" (ret) : "r" (i << VRN_SHIFT)); |
225 | return ret; |
224 | return ret; |
226 | } |
225 | } |
227 | 226 | ||
228 | /** Write Region Register. |
227 | /** Write Region Register. |
229 | * |
228 | * |
230 | * @param i Region register index. |
229 | * @param i Region register index. |
231 | * @param v Value to be written to rr[i]. |
230 | * @param v Value to be written to rr[i]. |
232 | */ |
231 | */ |
233 | static inline void rr_write(index_t i, __u64 v) |
232 | static inline void rr_write(index_t i, __u64 v) |
234 | { |
233 | { |
235 | ASSERT(i < REGION_REGISTERS); |
234 | ASSERT(i < REGION_REGISTERS); |
236 | __asm__ volatile ( |
235 | __asm__ volatile ( |
237 | "mov rr[%0] = %1\n" |
236 | "mov rr[%0] = %1\n" |
238 | : |
237 | : |
239 | : "r" (i << VRN_SHIFT), "r" (v) |
238 | : "r" (i << VRN_SHIFT), "r" (v) |
240 | ); |
239 | ); |
241 | } |
240 | } |
242 | 241 | ||
243 | /** Read Page Table Register. |
242 | /** Read Page Table Register. |
244 | * |
243 | * |
245 | * @return Current value stored in PTA. |
244 | * @return Current value stored in PTA. |
246 | */ |
245 | */ |
247 | static inline __u64 pta_read(void) |
246 | static inline __u64 pta_read(void) |
248 | { |
247 | { |
249 | __u64 ret; |
248 | __u64 ret; |
250 | 249 | ||
251 | __asm__ volatile ("mov %0 = cr.pta\n" : "=r" (ret)); |
250 | __asm__ volatile ("mov %0 = cr.pta\n" : "=r" (ret)); |
252 | 251 | ||
253 | return ret; |
252 | return ret; |
254 | } |
253 | } |
255 | 254 | ||
256 | /** Write Page Table Register. |
255 | /** Write Page Table Register. |
257 | * |
256 | * |
258 | * @param v New value to be stored in PTA. |
257 | * @param v New value to be stored in PTA. |
259 | */ |
258 | */ |
260 | static inline void pta_write(__u64 v) |
259 | static inline void pta_write(__u64 v) |
261 | { |
260 | { |
262 | __asm__ volatile ("mov cr.pta = %0\n" : : "r" (v)); |
261 | __asm__ volatile ("mov cr.pta = %0\n" : : "r" (v)); |
263 | } |
262 | } |
264 | 263 | ||
265 | extern void page_arch_init(void); |
264 | extern void page_arch_init(void); |
266 | 265 | ||
267 | extern vhpt_entry_t *vhpt_hash(__address page, asid_t asid); |
266 | extern vhpt_entry_t *vhpt_hash(__address page, asid_t asid); |
268 | extern bool vhpt_compare(__address page, asid_t asid, vhpt_entry_t *v); |
267 | extern bool vhpt_compare(__address page, asid_t asid, vhpt_entry_t *v); |
269 | extern void vhpt_set_record(vhpt_entry_t *v, __address page, asid_t asid, __address frame, int flags); |
268 | extern void vhpt_set_record(vhpt_entry_t *v, __address page, asid_t asid, __address frame, int flags); |
270 | 269 | ||
271 | #endif /* __ASM__ */ |
270 | #endif /* __ASM__ */ |
272 | 271 | ||
273 | #endif /* KERNEL */ |
272 | #endif /* KERNEL */ |
274 | 273 | ||
275 | #endif |
274 | #endif |
276 | 275 |