Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 1 | /* |
| 2 | * "Cell Reference Set" HTAB support. |
| 3 | * |
| 4 | * (C) Copyright 2006-2007 TOSHIBA CORPORATION |
| 5 | * |
| 6 | * This code is based on arch/powerpc/platforms/pseries/lpar.c: |
| 7 | * Copyright (C) 2001 Todd Inglett, IBM Corporation |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | */ |
| 23 | |
| 24 | #undef DEBUG_LOW |
| 25 | |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/spinlock.h> |
| 28 | |
| 29 | #include <asm/mmu.h> |
| 30 | #include <asm/page.h> |
| 31 | #include <asm/pgtable.h> |
| 32 | #include <asm/machdep.h> |
| 33 | #include <asm/udbg.h> |
| 34 | |
Ishizaki Kou | 8ae6e30 | 2008-04-24 19:28:48 +1000 | [diff] [blame] | 35 | #include "beat_wrapper.h" |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 36 | |
| 37 | #ifdef DEBUG_LOW |
Ishizaki Kou | 2fe37a6 | 2008-03-14 23:19:34 +1100 | [diff] [blame] | 38 | #define DBG_LOW(fmt...) do { udbg_printf(fmt); } while (0) |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 39 | #else |
Ishizaki Kou | 2fe37a6 | 2008-03-14 23:19:34 +1100 | [diff] [blame] | 40 | #define DBG_LOW(fmt...) do { } while (0) |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 41 | #endif |
| 42 | |
| 43 | static DEFINE_SPINLOCK(beat_htab_lock); |
| 44 | |
| 45 | static inline unsigned int beat_read_mask(unsigned hpte_group) |
| 46 | { |
| 47 | unsigned long hpte_v[5]; |
| 48 | unsigned long rmask = 0; |
| 49 | |
| 50 | beat_read_htab_entries(0, hpte_group + 0, hpte_v); |
| 51 | if (!(hpte_v[0] & HPTE_V_BOLTED)) |
| 52 | rmask |= 0x8000; |
| 53 | if (!(hpte_v[1] & HPTE_V_BOLTED)) |
| 54 | rmask |= 0x4000; |
| 55 | if (!(hpte_v[2] & HPTE_V_BOLTED)) |
| 56 | rmask |= 0x2000; |
| 57 | if (!(hpte_v[3] & HPTE_V_BOLTED)) |
| 58 | rmask |= 0x1000; |
| 59 | beat_read_htab_entries(0, hpte_group + 4, hpte_v); |
| 60 | if (!(hpte_v[0] & HPTE_V_BOLTED)) |
| 61 | rmask |= 0x0800; |
| 62 | if (!(hpte_v[1] & HPTE_V_BOLTED)) |
| 63 | rmask |= 0x0400; |
| 64 | if (!(hpte_v[2] & HPTE_V_BOLTED)) |
| 65 | rmask |= 0x0200; |
| 66 | if (!(hpte_v[3] & HPTE_V_BOLTED)) |
| 67 | rmask |= 0x0100; |
| 68 | hpte_group = ~hpte_group & (htab_hash_mask * HPTES_PER_GROUP); |
| 69 | beat_read_htab_entries(0, hpte_group + 0, hpte_v); |
| 70 | if (!(hpte_v[0] & HPTE_V_BOLTED)) |
| 71 | rmask |= 0x80; |
| 72 | if (!(hpte_v[1] & HPTE_V_BOLTED)) |
| 73 | rmask |= 0x40; |
| 74 | if (!(hpte_v[2] & HPTE_V_BOLTED)) |
| 75 | rmask |= 0x20; |
| 76 | if (!(hpte_v[3] & HPTE_V_BOLTED)) |
| 77 | rmask |= 0x10; |
| 78 | beat_read_htab_entries(0, hpte_group + 4, hpte_v); |
| 79 | if (!(hpte_v[0] & HPTE_V_BOLTED)) |
| 80 | rmask |= 0x08; |
| 81 | if (!(hpte_v[1] & HPTE_V_BOLTED)) |
| 82 | rmask |= 0x04; |
| 83 | if (!(hpte_v[2] & HPTE_V_BOLTED)) |
| 84 | rmask |= 0x02; |
| 85 | if (!(hpte_v[3] & HPTE_V_BOLTED)) |
| 86 | rmask |= 0x01; |
| 87 | return rmask; |
| 88 | } |
| 89 | |
| 90 | static long beat_lpar_hpte_insert(unsigned long hpte_group, |
| 91 | unsigned long va, unsigned long pa, |
| 92 | unsigned long rflags, unsigned long vflags, |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 93 | int psize, int ssize) |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 94 | { |
| 95 | unsigned long lpar_rc; |
| 96 | unsigned long slot; |
| 97 | unsigned long hpte_v, hpte_r; |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 98 | |
| 99 | /* same as iseries */ |
| 100 | if (vflags & HPTE_V_SECONDARY) |
| 101 | return -1; |
| 102 | |
| 103 | if (!(vflags & HPTE_V_BOLTED)) |
| 104 | DBG_LOW("hpte_insert(group=%lx, va=%016lx, pa=%016lx, " |
| 105 | "rflags=%lx, vflags=%lx, psize=%d)\n", |
| 106 | hpte_group, va, pa, rflags, vflags, psize); |
| 107 | |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 108 | hpte_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M) | |
| 109 | vflags | HPTE_V_VALID; |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 110 | hpte_r = hpte_encode_r(pa, psize) | rflags; |
| 111 | |
| 112 | if (!(vflags & HPTE_V_BOLTED)) |
| 113 | DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r); |
| 114 | |
| 115 | if (rflags & (_PAGE_GUARDED|_PAGE_NO_CACHE)) |
| 116 | hpte_r &= ~_PAGE_COHERENT; |
| 117 | |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 118 | spin_lock(&beat_htab_lock); |
Ishizaki Kou | 2fe37a6 | 2008-03-14 23:19:34 +1100 | [diff] [blame] | 119 | lpar_rc = beat_read_mask(hpte_group); |
| 120 | if (lpar_rc == 0) { |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 121 | if (!(vflags & HPTE_V_BOLTED)) |
| 122 | DBG_LOW(" full\n"); |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 123 | spin_unlock(&beat_htab_lock); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 124 | return -1; |
| 125 | } |
| 126 | |
| 127 | lpar_rc = beat_insert_htab_entry(0, hpte_group, lpar_rc << 48, |
| 128 | hpte_v, hpte_r, &slot); |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 129 | spin_unlock(&beat_htab_lock); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 130 | |
| 131 | /* |
| 132 | * Since we try and ioremap PHBs we don't own, the pte insert |
| 133 | * will fail. However we must catch the failure in hash_page |
| 134 | * or we will loop forever, so return -2 in this case. |
| 135 | */ |
| 136 | if (unlikely(lpar_rc != 0)) { |
| 137 | if (!(vflags & HPTE_V_BOLTED)) |
| 138 | DBG_LOW(" lpar err %lx\n", lpar_rc); |
| 139 | return -2; |
| 140 | } |
| 141 | if (!(vflags & HPTE_V_BOLTED)) |
| 142 | DBG_LOW(" -> slot: %lx\n", slot); |
| 143 | |
| 144 | /* We have to pass down the secondary bucket bit here as well */ |
| 145 | return (slot ^ hpte_group) & 15; |
| 146 | } |
| 147 | |
| 148 | static long beat_lpar_hpte_remove(unsigned long hpte_group) |
| 149 | { |
| 150 | DBG_LOW("hpte_remove(group=%lx)\n", hpte_group); |
| 151 | return -1; |
| 152 | } |
| 153 | |
| 154 | static unsigned long beat_lpar_hpte_getword0(unsigned long slot) |
| 155 | { |
| 156 | unsigned long dword0, dword[5]; |
| 157 | unsigned long lpar_rc; |
| 158 | |
| 159 | lpar_rc = beat_read_htab_entries(0, slot & ~3UL, dword); |
| 160 | |
| 161 | dword0 = dword[slot&3]; |
| 162 | |
| 163 | BUG_ON(lpar_rc != 0); |
| 164 | |
| 165 | return dword0; |
| 166 | } |
| 167 | |
| 168 | static void beat_lpar_hptab_clear(void) |
| 169 | { |
| 170 | unsigned long size_bytes = 1UL << ppc64_pft_size; |
| 171 | unsigned long hpte_count = size_bytes >> 4; |
| 172 | int i; |
| 173 | unsigned long dummy0, dummy1; |
| 174 | |
| 175 | /* TODO: Use bulk call */ |
| 176 | for (i = 0; i < hpte_count; i++) |
| 177 | beat_write_htab_entry(0, i, 0, 0, -1UL, -1UL, &dummy0, &dummy1); |
| 178 | } |
| 179 | |
| 180 | /* |
| 181 | * NOTE: for updatepp ops we are fortunate that the linux "newpp" bits and |
| 182 | * the low 3 bits of flags happen to line up. So no transform is needed. |
| 183 | * We can probably optimize here and assume the high bits of newpp are |
| 184 | * already zero. For now I am paranoid. |
| 185 | */ |
| 186 | static long beat_lpar_hpte_updatepp(unsigned long slot, |
| 187 | unsigned long newpp, |
| 188 | unsigned long va, |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 189 | int psize, int ssize, int local) |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 190 | { |
| 191 | unsigned long lpar_rc; |
| 192 | unsigned long dummy0, dummy1, want_v; |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 193 | |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 194 | want_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 195 | |
| 196 | DBG_LOW(" update: " |
| 197 | "avpnv=%016lx, slot=%016lx, psize: %d, newpp %016lx ... ", |
| 198 | want_v & HPTE_V_AVPN, slot, psize, newpp); |
| 199 | |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 200 | spin_lock(&beat_htab_lock); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 201 | dummy0 = beat_lpar_hpte_getword0(slot); |
| 202 | if ((dummy0 & ~0x7FUL) != (want_v & ~0x7FUL)) { |
| 203 | DBG_LOW("not found !\n"); |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 204 | spin_unlock(&beat_htab_lock); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 205 | return -1; |
| 206 | } |
| 207 | |
| 208 | lpar_rc = beat_write_htab_entry(0, slot, 0, newpp, 0, 7, &dummy0, |
| 209 | &dummy1); |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 210 | spin_unlock(&beat_htab_lock); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 211 | if (lpar_rc != 0 || dummy0 == 0) { |
| 212 | DBG_LOW("not found !\n"); |
| 213 | return -1; |
| 214 | } |
| 215 | |
| 216 | DBG_LOW("ok %lx %lx\n", dummy0, dummy1); |
| 217 | |
| 218 | BUG_ON(lpar_rc != 0); |
| 219 | |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | static long beat_lpar_hpte_find(unsigned long va, int psize) |
| 224 | { |
| 225 | unsigned long hash; |
| 226 | unsigned long i, j; |
| 227 | long slot; |
| 228 | unsigned long want_v, hpte_v; |
| 229 | |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 230 | hash = hpt_hash(va, mmu_psize_defs[psize].shift, MMU_SEGSIZE_256M); |
| 231 | want_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 232 | |
| 233 | for (j = 0; j < 2; j++) { |
| 234 | slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; |
| 235 | for (i = 0; i < HPTES_PER_GROUP; i++) { |
| 236 | hpte_v = beat_lpar_hpte_getword0(slot); |
| 237 | |
| 238 | if (HPTE_V_COMPARE(hpte_v, want_v) |
| 239 | && (hpte_v & HPTE_V_VALID) |
| 240 | && (!!(hpte_v & HPTE_V_SECONDARY) == j)) { |
| 241 | /* HPTE matches */ |
| 242 | if (j) |
| 243 | slot = -slot; |
| 244 | return slot; |
| 245 | } |
| 246 | ++slot; |
| 247 | } |
| 248 | hash = ~hash; |
| 249 | } |
| 250 | |
| 251 | return -1; |
| 252 | } |
| 253 | |
| 254 | static void beat_lpar_hpte_updateboltedpp(unsigned long newpp, |
| 255 | unsigned long ea, |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 256 | int psize, int ssize) |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 257 | { |
| 258 | unsigned long lpar_rc, slot, vsid, va, dummy0, dummy1; |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 259 | |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 260 | vsid = get_kernel_vsid(ea, MMU_SEGSIZE_256M); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 261 | va = (vsid << 28) | (ea & 0x0fffffff); |
| 262 | |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 263 | spin_lock(&beat_htab_lock); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 264 | slot = beat_lpar_hpte_find(va, psize); |
| 265 | BUG_ON(slot == -1); |
| 266 | |
| 267 | lpar_rc = beat_write_htab_entry(0, slot, 0, newpp, 0, 7, |
| 268 | &dummy0, &dummy1); |
Akira Iguchi | cbca567 | 2007-02-09 16:53:59 +0900 | [diff] [blame] | 269 | spin_unlock(&beat_htab_lock); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 270 | |
| 271 | BUG_ON(lpar_rc != 0); |
| 272 | } |
| 273 | |
| 274 | static void beat_lpar_hpte_invalidate(unsigned long slot, unsigned long va, |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 275 | int psize, int ssize, int local) |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 276 | { |
| 277 | unsigned long want_v; |
| 278 | unsigned long lpar_rc; |
| 279 | unsigned long dummy1, dummy2; |
| 280 | unsigned long flags; |
| 281 | |
| 282 | DBG_LOW(" inval : slot=%lx, va=%016lx, psize: %d, local: %d\n", |
| 283 | slot, va, psize, local); |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 284 | want_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M); |
Ishizaki Kou | fe4a0cf | 2007-02-02 16:42:28 +0900 | [diff] [blame] | 285 | |
| 286 | spin_lock_irqsave(&beat_htab_lock, flags); |
| 287 | dummy1 = beat_lpar_hpte_getword0(slot); |
| 288 | |
| 289 | if ((dummy1 & ~0x7FUL) != (want_v & ~0x7FUL)) { |
| 290 | DBG_LOW("not found !\n"); |
| 291 | spin_unlock_irqrestore(&beat_htab_lock, flags); |
| 292 | return; |
| 293 | } |
| 294 | |
| 295 | lpar_rc = beat_write_htab_entry(0, slot, 0, 0, HPTE_V_VALID, 0, |
| 296 | &dummy1, &dummy2); |
| 297 | spin_unlock_irqrestore(&beat_htab_lock, flags); |
| 298 | |
| 299 | BUG_ON(lpar_rc != 0); |
| 300 | } |
| 301 | |
| 302 | void __init hpte_init_beat(void) |
| 303 | { |
| 304 | ppc_md.hpte_invalidate = beat_lpar_hpte_invalidate; |
| 305 | ppc_md.hpte_updatepp = beat_lpar_hpte_updatepp; |
| 306 | ppc_md.hpte_updateboltedpp = beat_lpar_hpte_updateboltedpp; |
| 307 | ppc_md.hpte_insert = beat_lpar_hpte_insert; |
| 308 | ppc_md.hpte_remove = beat_lpar_hpte_remove; |
| 309 | ppc_md.hpte_clear_all = beat_lpar_hptab_clear; |
| 310 | } |
Ishizaki Kou | 7f2c857 | 2007-10-02 18:23:46 +1000 | [diff] [blame] | 311 | |
| 312 | static long beat_lpar_hpte_insert_v3(unsigned long hpte_group, |
| 313 | unsigned long va, unsigned long pa, |
| 314 | unsigned long rflags, unsigned long vflags, |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 315 | int psize, int ssize) |
Ishizaki Kou | 7f2c857 | 2007-10-02 18:23:46 +1000 | [diff] [blame] | 316 | { |
| 317 | unsigned long lpar_rc; |
| 318 | unsigned long slot; |
| 319 | unsigned long hpte_v, hpte_r; |
| 320 | |
| 321 | /* same as iseries */ |
| 322 | if (vflags & HPTE_V_SECONDARY) |
| 323 | return -1; |
| 324 | |
| 325 | if (!(vflags & HPTE_V_BOLTED)) |
| 326 | DBG_LOW("hpte_insert(group=%lx, va=%016lx, pa=%016lx, " |
| 327 | "rflags=%lx, vflags=%lx, psize=%d)\n", |
| 328 | hpte_group, va, pa, rflags, vflags, psize); |
| 329 | |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 330 | hpte_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M) | |
| 331 | vflags | HPTE_V_VALID; |
Ishizaki Kou | 7f2c857 | 2007-10-02 18:23:46 +1000 | [diff] [blame] | 332 | hpte_r = hpte_encode_r(pa, psize) | rflags; |
| 333 | |
| 334 | if (!(vflags & HPTE_V_BOLTED)) |
| 335 | DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r); |
| 336 | |
| 337 | if (rflags & (_PAGE_GUARDED|_PAGE_NO_CACHE)) |
| 338 | hpte_r &= ~_PAGE_COHERENT; |
| 339 | |
| 340 | /* insert into not-volted entry */ |
| 341 | lpar_rc = beat_insert_htab_entry3(0, hpte_group, hpte_v, hpte_r, |
| 342 | HPTE_V_BOLTED, 0, &slot); |
| 343 | /* |
| 344 | * Since we try and ioremap PHBs we don't own, the pte insert |
| 345 | * will fail. However we must catch the failure in hash_page |
| 346 | * or we will loop forever, so return -2 in this case. |
| 347 | */ |
| 348 | if (unlikely(lpar_rc != 0)) { |
| 349 | if (!(vflags & HPTE_V_BOLTED)) |
| 350 | DBG_LOW(" lpar err %lx\n", lpar_rc); |
| 351 | return -2; |
| 352 | } |
| 353 | if (!(vflags & HPTE_V_BOLTED)) |
| 354 | DBG_LOW(" -> slot: %lx\n", slot); |
| 355 | |
| 356 | /* We have to pass down the secondary bucket bit here as well */ |
| 357 | return (slot ^ hpte_group) & 15; |
| 358 | } |
| 359 | |
| 360 | /* |
| 361 | * NOTE: for updatepp ops we are fortunate that the linux "newpp" bits and |
| 362 | * the low 3 bits of flags happen to line up. So no transform is needed. |
| 363 | * We can probably optimize here and assume the high bits of newpp are |
| 364 | * already zero. For now I am paranoid. |
| 365 | */ |
| 366 | static long beat_lpar_hpte_updatepp_v3(unsigned long slot, |
| 367 | unsigned long newpp, |
| 368 | unsigned long va, |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 369 | int psize, int ssize, int local) |
Ishizaki Kou | 7f2c857 | 2007-10-02 18:23:46 +1000 | [diff] [blame] | 370 | { |
| 371 | unsigned long lpar_rc; |
| 372 | unsigned long want_v; |
| 373 | unsigned long pss; |
| 374 | |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 375 | want_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M); |
Ishizaki Kou | 7f2c857 | 2007-10-02 18:23:46 +1000 | [diff] [blame] | 376 | pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc; |
| 377 | |
| 378 | DBG_LOW(" update: " |
| 379 | "avpnv=%016lx, slot=%016lx, psize: %d, newpp %016lx ... ", |
| 380 | want_v & HPTE_V_AVPN, slot, psize, newpp); |
| 381 | |
| 382 | lpar_rc = beat_update_htab_permission3(0, slot, want_v, pss, 7, newpp); |
| 383 | |
| 384 | if (lpar_rc == 0xfffffff7) { |
| 385 | DBG_LOW("not found !\n"); |
| 386 | return -1; |
| 387 | } |
| 388 | |
| 389 | DBG_LOW("ok\n"); |
| 390 | |
| 391 | BUG_ON(lpar_rc != 0); |
| 392 | |
| 393 | return 0; |
| 394 | } |
| 395 | |
| 396 | static void beat_lpar_hpte_invalidate_v3(unsigned long slot, unsigned long va, |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 397 | int psize, int ssize, int local) |
Ishizaki Kou | 7f2c857 | 2007-10-02 18:23:46 +1000 | [diff] [blame] | 398 | { |
| 399 | unsigned long want_v; |
| 400 | unsigned long lpar_rc; |
| 401 | unsigned long pss; |
| 402 | |
| 403 | DBG_LOW(" inval : slot=%lx, va=%016lx, psize: %d, local: %d\n", |
| 404 | slot, va, psize, local); |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 405 | want_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M); |
Ishizaki Kou | 7f2c857 | 2007-10-02 18:23:46 +1000 | [diff] [blame] | 406 | pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc; |
| 407 | |
| 408 | lpar_rc = beat_invalidate_htab_entry3(0, slot, want_v, pss); |
| 409 | |
| 410 | /* E_busy can be valid output: page may be already replaced */ |
| 411 | BUG_ON(lpar_rc != 0 && lpar_rc != 0xfffffff7); |
| 412 | } |
| 413 | |
| 414 | static int64_t _beat_lpar_hptab_clear_v3(void) |
| 415 | { |
| 416 | return beat_clear_htab3(0); |
| 417 | } |
| 418 | |
| 419 | static void beat_lpar_hptab_clear_v3(void) |
| 420 | { |
| 421 | _beat_lpar_hptab_clear_v3(); |
| 422 | } |
| 423 | |
| 424 | void __init hpte_init_beat_v3(void) |
| 425 | { |
| 426 | if (_beat_lpar_hptab_clear_v3() == 0) { |
| 427 | ppc_md.hpte_invalidate = beat_lpar_hpte_invalidate_v3; |
| 428 | ppc_md.hpte_updatepp = beat_lpar_hpte_updatepp_v3; |
| 429 | ppc_md.hpte_updateboltedpp = beat_lpar_hpte_updateboltedpp; |
| 430 | ppc_md.hpte_insert = beat_lpar_hpte_insert_v3; |
| 431 | ppc_md.hpte_remove = beat_lpar_hpte_remove; |
| 432 | ppc_md.hpte_clear_all = beat_lpar_hptab_clear_v3; |
| 433 | } else { |
| 434 | ppc_md.hpte_invalidate = beat_lpar_hpte_invalidate; |
| 435 | ppc_md.hpte_updatepp = beat_lpar_hpte_updatepp; |
| 436 | ppc_md.hpte_updateboltedpp = beat_lpar_hpte_updateboltedpp; |
| 437 | ppc_md.hpte_insert = beat_lpar_hpte_insert; |
| 438 | ppc_md.hpte_remove = beat_lpar_hpte_remove; |
| 439 | ppc_md.hpte_clear_all = beat_lpar_hptab_clear; |
| 440 | } |
| 441 | } |