Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * pSeries_lpar.c | |
3 | * Copyright (C) 2001 Todd Inglett, IBM Corporation | |
4 | * | |
5 | * pSeries LPAR support. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
3c726f8d | 22 | #undef DEBUG_LOW |
1da177e4 | 23 | |
1da177e4 LT |
24 | #include <linux/kernel.h> |
25 | #include <linux/dma-mapping.h> | |
463ce0e1 | 26 | #include <linux/console.h> |
1da177e4 LT |
27 | #include <asm/processor.h> |
28 | #include <asm/mmu.h> | |
29 | #include <asm/page.h> | |
30 | #include <asm/pgtable.h> | |
31 | #include <asm/machdep.h> | |
32 | #include <asm/abs_addr.h> | |
33 | #include <asm/mmu_context.h> | |
1da177e4 LT |
34 | #include <asm/iommu.h> |
35 | #include <asm/tlbflush.h> | |
36 | #include <asm/tlb.h> | |
37 | #include <asm/prom.h> | |
1da177e4 | 38 | #include <asm/cputable.h> |
dcad47fc | 39 | #include <asm/udbg.h> |
2249ca9d | 40 | #include <asm/smp.h> |
a1218720 ME |
41 | |
42 | #include "plpar_wrappers.h" | |
1da177e4 | 43 | |
3c726f8d BH |
44 | #ifdef DEBUG_LOW |
45 | #define DBG_LOW(fmt...) do { udbg_printf(fmt); } while(0) | |
1da177e4 | 46 | #else |
3c726f8d | 47 | #define DBG_LOW(fmt...) do { } while(0) |
1da177e4 LT |
48 | #endif |
49 | ||
b9377ffc | 50 | /* in hvCall.S */ |
1da177e4 | 51 | EXPORT_SYMBOL(plpar_hcall); |
b9377ffc | 52 | EXPORT_SYMBOL(plpar_hcall9); |
1da177e4 | 53 | EXPORT_SYMBOL(plpar_hcall_norets); |
b9377ffc | 54 | |
1da177e4 LT |
55 | extern void pSeries_find_serial_port(void); |
56 | ||
57 | ||
58 | int vtermno; /* virtual terminal# for udbg */ | |
59 | ||
60 | #define __ALIGNED__ __attribute__((__aligned__(sizeof(long)))) | |
51d3082f | 61 | static void udbg_hvsi_putc(char c) |
1da177e4 LT |
62 | { |
63 | /* packet's seqno isn't used anyways */ | |
64 | uint8_t packet[] __ALIGNED__ = { 0xff, 5, 0, 0, c }; | |
65 | int rc; | |
66 | ||
67 | if (c == '\n') | |
68 | udbg_hvsi_putc('\r'); | |
69 | ||
70 | do { | |
71 | rc = plpar_put_term_char(vtermno, sizeof(packet), packet); | |
706c8c93 | 72 | } while (rc == H_BUSY); |
1da177e4 LT |
73 | } |
74 | ||
75 | static long hvsi_udbg_buf_len; | |
76 | static uint8_t hvsi_udbg_buf[256]; | |
77 | ||
78 | static int udbg_hvsi_getc_poll(void) | |
79 | { | |
80 | unsigned char ch; | |
81 | int rc, i; | |
82 | ||
83 | if (hvsi_udbg_buf_len == 0) { | |
84 | rc = plpar_get_term_char(vtermno, &hvsi_udbg_buf_len, hvsi_udbg_buf); | |
706c8c93 | 85 | if (rc != H_SUCCESS || hvsi_udbg_buf[0] != 0xff) { |
1da177e4 LT |
86 | /* bad read or non-data packet */ |
87 | hvsi_udbg_buf_len = 0; | |
88 | } else { | |
89 | /* remove the packet header */ | |
90 | for (i = 4; i < hvsi_udbg_buf_len; i++) | |
91 | hvsi_udbg_buf[i-4] = hvsi_udbg_buf[i]; | |
92 | hvsi_udbg_buf_len -= 4; | |
93 | } | |
94 | } | |
95 | ||
96 | if (hvsi_udbg_buf_len <= 0 || hvsi_udbg_buf_len > 256) { | |
97 | /* no data ready */ | |
98 | hvsi_udbg_buf_len = 0; | |
99 | return -1; | |
100 | } | |
101 | ||
102 | ch = hvsi_udbg_buf[0]; | |
103 | /* shift remaining data down */ | |
104 | for (i = 1; i < hvsi_udbg_buf_len; i++) { | |
105 | hvsi_udbg_buf[i-1] = hvsi_udbg_buf[i]; | |
106 | } | |
107 | hvsi_udbg_buf_len--; | |
108 | ||
109 | return ch; | |
110 | } | |
111 | ||
bb6b9b28 | 112 | static int udbg_hvsi_getc(void) |
1da177e4 LT |
113 | { |
114 | int ch; | |
115 | for (;;) { | |
116 | ch = udbg_hvsi_getc_poll(); | |
117 | if (ch == -1) { | |
118 | /* This shouldn't be needed...but... */ | |
119 | volatile unsigned long delay; | |
120 | for (delay=0; delay < 2000000; delay++) | |
121 | ; | |
122 | } else { | |
123 | return ch; | |
124 | } | |
125 | } | |
126 | } | |
127 | ||
51d3082f | 128 | static void udbg_putcLP(char c) |
1da177e4 LT |
129 | { |
130 | char buf[16]; | |
131 | unsigned long rc; | |
132 | ||
133 | if (c == '\n') | |
134 | udbg_putcLP('\r'); | |
135 | ||
136 | buf[0] = c; | |
137 | do { | |
138 | rc = plpar_put_term_char(vtermno, 1, buf); | |
706c8c93 | 139 | } while(rc == H_BUSY); |
1da177e4 LT |
140 | } |
141 | ||
142 | /* Buffered chars getc */ | |
143 | static long inbuflen; | |
144 | static long inbuf[2]; /* must be 2 longs */ | |
145 | ||
146 | static int udbg_getc_pollLP(void) | |
147 | { | |
148 | /* The interface is tricky because it may return up to 16 chars. | |
149 | * We save them statically for future calls to udbg_getc(). | |
150 | */ | |
151 | char ch, *buf = (char *)inbuf; | |
152 | int i; | |
153 | long rc; | |
154 | if (inbuflen == 0) { | |
155 | /* get some more chars. */ | |
156 | inbuflen = 0; | |
157 | rc = plpar_get_term_char(vtermno, &inbuflen, buf); | |
706c8c93 | 158 | if (rc != H_SUCCESS) |
1da177e4 LT |
159 | inbuflen = 0; /* otherwise inbuflen is garbage */ |
160 | } | |
161 | if (inbuflen <= 0 || inbuflen > 16) { | |
162 | /* Catch error case as well as other oddities (corruption) */ | |
163 | inbuflen = 0; | |
164 | return -1; | |
165 | } | |
166 | ch = buf[0]; | |
167 | for (i = 1; i < inbuflen; i++) /* shuffle them down. */ | |
168 | buf[i-1] = buf[i]; | |
169 | inbuflen--; | |
170 | return ch; | |
171 | } | |
172 | ||
bb6b9b28 | 173 | static int udbg_getcLP(void) |
1da177e4 LT |
174 | { |
175 | int ch; | |
176 | for (;;) { | |
177 | ch = udbg_getc_pollLP(); | |
178 | if (ch == -1) { | |
179 | /* This shouldn't be needed...but... */ | |
180 | volatile unsigned long delay; | |
181 | for (delay=0; delay < 2000000; delay++) | |
182 | ; | |
183 | } else { | |
184 | return ch; | |
185 | } | |
186 | } | |
187 | } | |
188 | ||
189 | /* call this from early_init() for a working debug console on | |
190 | * vterm capable LPAR machines | |
191 | */ | |
463ce0e1 | 192 | void __init udbg_init_debug_lpar(void) |
1da177e4 LT |
193 | { |
194 | vtermno = 0; | |
c8f1c8be MM |
195 | udbg_putc = udbg_putcLP; |
196 | udbg_getc = udbg_getcLP; | |
197 | udbg_getc_poll = udbg_getc_pollLP; | |
1da177e4 LT |
198 | } |
199 | ||
200 | /* returns 0 if couldn't find or use /chosen/stdout as console */ | |
463ce0e1 | 201 | void __init find_udbg_vterm(void) |
1da177e4 LT |
202 | { |
203 | struct device_node *stdout_node; | |
954a46e2 JK |
204 | const u32 *termno; |
205 | const char *name; | |
463ce0e1 | 206 | int add_console; |
1da177e4 LT |
207 | |
208 | /* find the boot console from /chosen/stdout */ | |
209 | if (!of_chosen) | |
463ce0e1 | 210 | return; |
e2eb6392 | 211 | name = of_get_property(of_chosen, "linux,stdout-path", NULL); |
1da177e4 | 212 | if (name == NULL) |
463ce0e1 | 213 | return; |
1da177e4 LT |
214 | stdout_node = of_find_node_by_path(name); |
215 | if (!stdout_node) | |
463ce0e1 | 216 | return; |
e2eb6392 | 217 | name = of_get_property(stdout_node, "name", NULL); |
1da177e4 LT |
218 | if (!name) { |
219 | printk(KERN_WARNING "stdout node missing 'name' property!\n"); | |
220 | goto out; | |
221 | } | |
463ce0e1 BH |
222 | /* The user has requested a console so this is already set up. */ |
223 | add_console = !strstr(cmd_line, "console="); | |
1da177e4 | 224 | |
463ce0e1 BH |
225 | /* Check if it's a virtual terminal */ |
226 | if (strncmp(name, "vty", 3) != 0) | |
227 | goto out; | |
e2eb6392 | 228 | termno = of_get_property(stdout_node, "reg", NULL); |
463ce0e1 BH |
229 | if (termno == NULL) |
230 | goto out; | |
231 | vtermno = termno[0]; | |
232 | ||
55b61fec | 233 | if (of_device_is_compatible(stdout_node, "hvterm1")) { |
463ce0e1 BH |
234 | udbg_putc = udbg_putcLP; |
235 | udbg_getc = udbg_getcLP; | |
236 | udbg_getc_poll = udbg_getc_pollLP; | |
237 | if (add_console) | |
238 | add_preferred_console("hvc", termno[0] & 0xff, NULL); | |
55b61fec | 239 | } else if (of_device_is_compatible(stdout_node, "hvterm-protocol")) { |
463ce0e1 BH |
240 | vtermno = termno[0]; |
241 | udbg_putc = udbg_hvsi_putc; | |
242 | udbg_getc = udbg_hvsi_getc; | |
243 | udbg_getc_poll = udbg_hvsi_getc_poll; | |
244 | if (add_console) | |
245 | add_preferred_console("hvsi", termno[0] & 0xff, NULL); | |
1da177e4 | 246 | } |
1da177e4 LT |
247 | out: |
248 | of_node_put(stdout_node); | |
1da177e4 LT |
249 | } |
250 | ||
251 | void vpa_init(int cpu) | |
252 | { | |
253 | int hwcpu = get_hard_smp_processor_id(cpu); | |
2f6093c8 | 254 | unsigned long addr; |
1da177e4 | 255 | long ret; |
233ccd0d OJ |
256 | |
257 | if (cpu_has_feature(CPU_FTR_ALTIVEC)) | |
3356bb9f | 258 | lppaca[cpu].vmxregs_in_use = 1; |
233ccd0d | 259 | |
2f6093c8 MN |
260 | addr = __pa(&lppaca[cpu]); |
261 | ret = register_vpa(hwcpu, addr); | |
1da177e4 | 262 | |
2f6093c8 | 263 | if (ret) { |
1da177e4 LT |
264 | printk(KERN_ERR "WARNING: vpa_init: VPA registration for " |
265 | "cpu %d (hw %d) of area %lx returns %ld\n", | |
2f6093c8 MN |
266 | cpu, hwcpu, addr, ret); |
267 | return; | |
268 | } | |
269 | /* | |
270 | * PAPR says this feature is SLB-Buffer but firmware never | |
271 | * reports that. All SPLPAR support SLB shadow buffer. | |
272 | */ | |
273 | addr = __pa(&slb_shadow[cpu]); | |
274 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { | |
275 | ret = register_slb_shadow(hwcpu, addr); | |
276 | if (ret) | |
277 | printk(KERN_ERR | |
278 | "WARNING: vpa_init: SLB shadow buffer " | |
279 | "registration for cpu %d (hw %d) of area %lx " | |
280 | "returns %ld\n", cpu, hwcpu, addr, ret); | |
281 | } | |
1da177e4 LT |
282 | } |
283 | ||
035223fb | 284 | static long pSeries_lpar_hpte_insert(unsigned long hpte_group, |
3c726f8d BH |
285 | unsigned long va, unsigned long pa, |
286 | unsigned long rflags, unsigned long vflags, | |
287 | int psize) | |
1da177e4 | 288 | { |
1da177e4 LT |
289 | unsigned long lpar_rc; |
290 | unsigned long flags; | |
291 | unsigned long slot; | |
96e28449 | 292 | unsigned long hpte_v, hpte_r; |
1da177e4 | 293 | |
3c726f8d BH |
294 | if (!(vflags & HPTE_V_BOLTED)) |
295 | DBG_LOW("hpte_insert(group=%lx, va=%016lx, pa=%016lx, " | |
296 | "rflags=%lx, vflags=%lx, psize=%d)\n", | |
297 | hpte_group, va, pa, rflags, vflags, psize); | |
298 | ||
299 | hpte_v = hpte_encode_v(va, psize) | vflags | HPTE_V_VALID; | |
300 | hpte_r = hpte_encode_r(pa, psize) | rflags; | |
301 | ||
302 | if (!(vflags & HPTE_V_BOLTED)) | |
303 | DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r); | |
304 | ||
1da177e4 LT |
305 | /* Now fill in the actual HPTE */ |
306 | /* Set CEC cookie to 0 */ | |
307 | /* Zero page = 0 */ | |
308 | /* I-cache Invalidate = 0 */ | |
309 | /* I-cache synchronize = 0 */ | |
310 | /* Exact = 0 */ | |
311 | flags = 0; | |
312 | ||
3c726f8d | 313 | /* Make pHyp happy */ |
96e28449 DG |
314 | if (rflags & (_PAGE_GUARDED|_PAGE_NO_CACHE)) |
315 | hpte_r &= ~_PAGE_COHERENT; | |
1da177e4 | 316 | |
b9377ffc | 317 | lpar_rc = plpar_pte_enter(flags, hpte_group, hpte_v, hpte_r, &slot); |
706c8c93 | 318 | if (unlikely(lpar_rc == H_PTEG_FULL)) { |
3c726f8d BH |
319 | if (!(vflags & HPTE_V_BOLTED)) |
320 | DBG_LOW(" full\n"); | |
1da177e4 | 321 | return -1; |
3c726f8d | 322 | } |
1da177e4 LT |
323 | |
324 | /* | |
325 | * Since we try and ioremap PHBs we don't own, the pte insert | |
326 | * will fail. However we must catch the failure in hash_page | |
327 | * or we will loop forever, so return -2 in this case. | |
328 | */ | |
706c8c93 | 329 | if (unlikely(lpar_rc != H_SUCCESS)) { |
3c726f8d BH |
330 | if (!(vflags & HPTE_V_BOLTED)) |
331 | DBG_LOW(" lpar err %d\n", lpar_rc); | |
1da177e4 | 332 | return -2; |
3c726f8d BH |
333 | } |
334 | if (!(vflags & HPTE_V_BOLTED)) | |
335 | DBG_LOW(" -> slot: %d\n", slot & 7); | |
1da177e4 LT |
336 | |
337 | /* Because of iSeries, we have to pass down the secondary | |
338 | * bucket bit here as well | |
339 | */ | |
96e28449 | 340 | return (slot & 7) | (!!(vflags & HPTE_V_SECONDARY) << 3); |
1da177e4 LT |
341 | } |
342 | ||
343 | static DEFINE_SPINLOCK(pSeries_lpar_tlbie_lock); | |
344 | ||
345 | static long pSeries_lpar_hpte_remove(unsigned long hpte_group) | |
346 | { | |
347 | unsigned long slot_offset; | |
348 | unsigned long lpar_rc; | |
349 | int i; | |
350 | unsigned long dummy1, dummy2; | |
351 | ||
352 | /* pick a random slot to start at */ | |
353 | slot_offset = mftb() & 0x7; | |
354 | ||
355 | for (i = 0; i < HPTES_PER_GROUP; i++) { | |
356 | ||
357 | /* don't remove a bolted entry */ | |
358 | lpar_rc = plpar_pte_remove(H_ANDCOND, hpte_group + slot_offset, | |
359 | (0x1UL << 4), &dummy1, &dummy2); | |
706c8c93 | 360 | if (lpar_rc == H_SUCCESS) |
1da177e4 | 361 | return i; |
706c8c93 | 362 | BUG_ON(lpar_rc != H_NOT_FOUND); |
1da177e4 LT |
363 | |
364 | slot_offset++; | |
365 | slot_offset &= 0x7; | |
366 | } | |
367 | ||
368 | return -1; | |
369 | } | |
370 | ||
371 | static void pSeries_lpar_hptab_clear(void) | |
372 | { | |
373 | unsigned long size_bytes = 1UL << ppc64_pft_size; | |
374 | unsigned long hpte_count = size_bytes >> 4; | |
b7abc5c5 SS |
375 | unsigned long dummy1, dummy2, dword0; |
376 | long lpar_rc; | |
1da177e4 LT |
377 | int i; |
378 | ||
379 | /* TODO: Use bulk call */ | |
b7abc5c5 SS |
380 | for (i = 0; i < hpte_count; i++) { |
381 | /* dont remove HPTEs with VRMA mappings */ | |
382 | lpar_rc = plpar_pte_remove_raw(H_ANDCOND, i, HPTE_V_1TB_SEG, | |
383 | &dummy1, &dummy2); | |
384 | if (lpar_rc == H_NOT_FOUND) { | |
385 | lpar_rc = plpar_pte_read_raw(0, i, &dword0, &dummy1); | |
386 | if (!lpar_rc && ((dword0 & HPTE_V_VRMA_MASK) | |
387 | != HPTE_V_VRMA_MASK)) | |
388 | /* Can be hpte for 1TB Seg. So remove it */ | |
389 | plpar_pte_remove_raw(0, i, 0, &dummy1, &dummy2); | |
390 | } | |
391 | } | |
1da177e4 LT |
392 | } |
393 | ||
394 | /* | |
395 | * NOTE: for updatepp ops we are fortunate that the linux "newpp" bits and | |
396 | * the low 3 bits of flags happen to line up. So no transform is needed. | |
397 | * We can probably optimize here and assume the high bits of newpp are | |
398 | * already zero. For now I am paranoid. | |
399 | */ | |
3c726f8d BH |
400 | static long pSeries_lpar_hpte_updatepp(unsigned long slot, |
401 | unsigned long newpp, | |
402 | unsigned long va, | |
403 | int psize, int local) | |
1da177e4 LT |
404 | { |
405 | unsigned long lpar_rc; | |
406 | unsigned long flags = (newpp & 7) | H_AVPN; | |
3c726f8d | 407 | unsigned long want_v; |
1da177e4 | 408 | |
3c726f8d | 409 | want_v = hpte_encode_v(va, psize); |
1da177e4 | 410 | |
3c726f8d BH |
411 | DBG_LOW(" update: avpnv=%016lx, hash=%016lx, f=%x, psize: %d ... ", |
412 | want_v & HPTE_V_AVPN, slot, flags, psize); | |
1da177e4 | 413 | |
3c726f8d BH |
414 | lpar_rc = plpar_pte_protect(flags, slot, want_v & HPTE_V_AVPN); |
415 | ||
706c8c93 | 416 | if (lpar_rc == H_NOT_FOUND) { |
3c726f8d | 417 | DBG_LOW("not found !\n"); |
1da177e4 | 418 | return -1; |
3c726f8d BH |
419 | } |
420 | ||
421 | DBG_LOW("ok\n"); | |
1da177e4 | 422 | |
706c8c93 | 423 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
424 | |
425 | return 0; | |
426 | } | |
427 | ||
428 | static unsigned long pSeries_lpar_hpte_getword0(unsigned long slot) | |
429 | { | |
430 | unsigned long dword0; | |
431 | unsigned long lpar_rc; | |
432 | unsigned long dummy_word1; | |
433 | unsigned long flags; | |
434 | ||
435 | /* Read 1 pte at a time */ | |
436 | /* Do not need RPN to logical page translation */ | |
437 | /* No cross CEC PFT access */ | |
438 | flags = 0; | |
439 | ||
440 | lpar_rc = plpar_pte_read(flags, slot, &dword0, &dummy_word1); | |
441 | ||
706c8c93 | 442 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
443 | |
444 | return dword0; | |
445 | } | |
446 | ||
3c726f8d | 447 | static long pSeries_lpar_hpte_find(unsigned long va, int psize) |
1da177e4 LT |
448 | { |
449 | unsigned long hash; | |
450 | unsigned long i, j; | |
451 | long slot; | |
3c726f8d | 452 | unsigned long want_v, hpte_v; |
1da177e4 | 453 | |
3c726f8d BH |
454 | hash = hpt_hash(va, mmu_psize_defs[psize].shift); |
455 | want_v = hpte_encode_v(va, psize); | |
1da177e4 LT |
456 | |
457 | for (j = 0; j < 2; j++) { | |
458 | slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; | |
459 | for (i = 0; i < HPTES_PER_GROUP; i++) { | |
96e28449 | 460 | hpte_v = pSeries_lpar_hpte_getword0(slot); |
1da177e4 | 461 | |
3c726f8d | 462 | if (HPTE_V_COMPARE(hpte_v, want_v) |
96e28449 DG |
463 | && (hpte_v & HPTE_V_VALID) |
464 | && (!!(hpte_v & HPTE_V_SECONDARY) == j)) { | |
1da177e4 LT |
465 | /* HPTE matches */ |
466 | if (j) | |
467 | slot = -slot; | |
468 | return slot; | |
469 | } | |
470 | ++slot; | |
471 | } | |
472 | hash = ~hash; | |
473 | } | |
474 | ||
475 | return -1; | |
476 | } | |
477 | ||
478 | static void pSeries_lpar_hpte_updateboltedpp(unsigned long newpp, | |
3c726f8d BH |
479 | unsigned long ea, |
480 | int psize) | |
1da177e4 | 481 | { |
3c726f8d | 482 | unsigned long lpar_rc, slot, vsid, va, flags; |
1da177e4 LT |
483 | |
484 | vsid = get_kernel_vsid(ea); | |
485 | va = (vsid << 28) | (ea & 0x0fffffff); | |
1da177e4 | 486 | |
3c726f8d | 487 | slot = pSeries_lpar_hpte_find(va, psize); |
1da177e4 LT |
488 | BUG_ON(slot == -1); |
489 | ||
490 | flags = newpp & 7; | |
491 | lpar_rc = plpar_pte_protect(flags, slot, 0); | |
492 | ||
706c8c93 | 493 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
494 | } |
495 | ||
496 | static void pSeries_lpar_hpte_invalidate(unsigned long slot, unsigned long va, | |
3c726f8d | 497 | int psize, int local) |
1da177e4 | 498 | { |
3c726f8d | 499 | unsigned long want_v; |
1da177e4 LT |
500 | unsigned long lpar_rc; |
501 | unsigned long dummy1, dummy2; | |
502 | ||
3c726f8d BH |
503 | DBG_LOW(" inval : slot=%lx, va=%016lx, psize: %d, local: %d", |
504 | slot, va, psize, local); | |
1da177e4 | 505 | |
3c726f8d BH |
506 | want_v = hpte_encode_v(va, psize); |
507 | lpar_rc = plpar_pte_remove(H_AVPN, slot, want_v & HPTE_V_AVPN, | |
508 | &dummy1, &dummy2); | |
706c8c93 | 509 | if (lpar_rc == H_NOT_FOUND) |
1da177e4 LT |
510 | return; |
511 | ||
706c8c93 | 512 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
513 | } |
514 | ||
f03e64f2 PM |
515 | /* Flag bits for H_BULK_REMOVE */ |
516 | #define HBR_REQUEST 0x4000000000000000UL | |
517 | #define HBR_RESPONSE 0x8000000000000000UL | |
518 | #define HBR_END 0xc000000000000000UL | |
519 | #define HBR_AVPN 0x0200000000000000UL | |
520 | #define HBR_ANDCOND 0x0100000000000000UL | |
521 | ||
1da177e4 LT |
522 | /* |
523 | * Take a spinlock around flushes to avoid bouncing the hypervisor tlbie | |
524 | * lock. | |
525 | */ | |
035223fb | 526 | static void pSeries_lpar_flush_hash_range(unsigned long number, int local) |
1da177e4 | 527 | { |
f03e64f2 | 528 | unsigned long i, pix, rc; |
12e86f92 | 529 | unsigned long flags = 0; |
1da177e4 LT |
530 | struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch); |
531 | int lock_tlbie = !cpu_has_feature(CPU_FTR_LOCKLESS_TLBIE); | |
f03e64f2 PM |
532 | unsigned long param[9]; |
533 | unsigned long va; | |
534 | unsigned long hash, index, shift, hidx, slot; | |
535 | real_pte_t pte; | |
536 | int psize; | |
1da177e4 LT |
537 | |
538 | if (lock_tlbie) | |
539 | spin_lock_irqsave(&pSeries_lpar_tlbie_lock, flags); | |
540 | ||
f03e64f2 PM |
541 | psize = batch->psize; |
542 | pix = 0; | |
543 | for (i = 0; i < number; i++) { | |
544 | va = batch->vaddr[i]; | |
545 | pte = batch->pte[i]; | |
546 | pte_iterate_hashed_subpages(pte, psize, va, index, shift) { | |
547 | hash = hpt_hash(va, shift); | |
548 | hidx = __rpte_to_hidx(pte, index); | |
549 | if (hidx & _PTEIDX_SECONDARY) | |
550 | hash = ~hash; | |
551 | slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; | |
552 | slot += hidx & _PTEIDX_GROUP_IX; | |
12e86f92 PM |
553 | if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE)) { |
554 | pSeries_lpar_hpte_invalidate(slot, va, psize, | |
555 | local); | |
556 | } else { | |
557 | param[pix] = HBR_REQUEST | HBR_AVPN | slot; | |
558 | param[pix+1] = hpte_encode_v(va, psize) & | |
559 | HPTE_V_AVPN; | |
560 | pix += 2; | |
561 | if (pix == 8) { | |
562 | rc = plpar_hcall9(H_BULK_REMOVE, param, | |
f03e64f2 PM |
563 | param[0], param[1], param[2], |
564 | param[3], param[4], param[5], | |
565 | param[6], param[7]); | |
12e86f92 PM |
566 | BUG_ON(rc != H_SUCCESS); |
567 | pix = 0; | |
568 | } | |
f03e64f2 PM |
569 | } |
570 | } pte_iterate_hashed_end(); | |
571 | } | |
572 | if (pix) { | |
573 | param[pix] = HBR_END; | |
574 | rc = plpar_hcall9(H_BULK_REMOVE, param, param[0], param[1], | |
575 | param[2], param[3], param[4], param[5], | |
576 | param[6], param[7]); | |
577 | BUG_ON(rc != H_SUCCESS); | |
578 | } | |
1da177e4 LT |
579 | |
580 | if (lock_tlbie) | |
581 | spin_unlock_irqrestore(&pSeries_lpar_tlbie_lock, flags); | |
582 | } | |
583 | ||
7d0daae4 | 584 | void __init hpte_init_lpar(void) |
1da177e4 LT |
585 | { |
586 | ppc_md.hpte_invalidate = pSeries_lpar_hpte_invalidate; | |
587 | ppc_md.hpte_updatepp = pSeries_lpar_hpte_updatepp; | |
588 | ppc_md.hpte_updateboltedpp = pSeries_lpar_hpte_updateboltedpp; | |
589 | ppc_md.hpte_insert = pSeries_lpar_hpte_insert; | |
590 | ppc_md.hpte_remove = pSeries_lpar_hpte_remove; | |
591 | ppc_md.flush_hash_range = pSeries_lpar_flush_hash_range; | |
592 | ppc_md.hpte_clear_all = pSeries_lpar_hptab_clear; | |
1da177e4 | 593 | } |