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> | |
38 | #include <asm/abs_addr.h> | |
39 | #include <asm/cputable.h> | |
dcad47fc | 40 | #include <asm/udbg.h> |
2249ca9d | 41 | #include <asm/smp.h> |
a1218720 ME |
42 | |
43 | #include "plpar_wrappers.h" | |
1da177e4 | 44 | |
3c726f8d BH |
45 | #ifdef DEBUG_LOW |
46 | #define DBG_LOW(fmt...) do { udbg_printf(fmt); } while(0) | |
1da177e4 | 47 | #else |
3c726f8d | 48 | #define DBG_LOW(fmt...) do { } while(0) |
1da177e4 LT |
49 | #endif |
50 | ||
b9377ffc | 51 | /* in hvCall.S */ |
1da177e4 | 52 | EXPORT_SYMBOL(plpar_hcall); |
b9377ffc | 53 | EXPORT_SYMBOL(plpar_hcall9); |
1da177e4 | 54 | EXPORT_SYMBOL(plpar_hcall_norets); |
b9377ffc | 55 | |
1da177e4 LT |
56 | extern void pSeries_find_serial_port(void); |
57 | ||
58 | ||
59 | int vtermno; /* virtual terminal# for udbg */ | |
60 | ||
61 | #define __ALIGNED__ __attribute__((__aligned__(sizeof(long)))) | |
51d3082f | 62 | static void udbg_hvsi_putc(char c) |
1da177e4 LT |
63 | { |
64 | /* packet's seqno isn't used anyways */ | |
65 | uint8_t packet[] __ALIGNED__ = { 0xff, 5, 0, 0, c }; | |
66 | int rc; | |
67 | ||
68 | if (c == '\n') | |
69 | udbg_hvsi_putc('\r'); | |
70 | ||
71 | do { | |
72 | rc = plpar_put_term_char(vtermno, sizeof(packet), packet); | |
706c8c93 | 73 | } while (rc == H_BUSY); |
1da177e4 LT |
74 | } |
75 | ||
76 | static long hvsi_udbg_buf_len; | |
77 | static uint8_t hvsi_udbg_buf[256]; | |
78 | ||
79 | static int udbg_hvsi_getc_poll(void) | |
80 | { | |
81 | unsigned char ch; | |
82 | int rc, i; | |
83 | ||
84 | if (hvsi_udbg_buf_len == 0) { | |
85 | rc = plpar_get_term_char(vtermno, &hvsi_udbg_buf_len, hvsi_udbg_buf); | |
706c8c93 | 86 | if (rc != H_SUCCESS || hvsi_udbg_buf[0] != 0xff) { |
1da177e4 LT |
87 | /* bad read or non-data packet */ |
88 | hvsi_udbg_buf_len = 0; | |
89 | } else { | |
90 | /* remove the packet header */ | |
91 | for (i = 4; i < hvsi_udbg_buf_len; i++) | |
92 | hvsi_udbg_buf[i-4] = hvsi_udbg_buf[i]; | |
93 | hvsi_udbg_buf_len -= 4; | |
94 | } | |
95 | } | |
96 | ||
97 | if (hvsi_udbg_buf_len <= 0 || hvsi_udbg_buf_len > 256) { | |
98 | /* no data ready */ | |
99 | hvsi_udbg_buf_len = 0; | |
100 | return -1; | |
101 | } | |
102 | ||
103 | ch = hvsi_udbg_buf[0]; | |
104 | /* shift remaining data down */ | |
105 | for (i = 1; i < hvsi_udbg_buf_len; i++) { | |
106 | hvsi_udbg_buf[i-1] = hvsi_udbg_buf[i]; | |
107 | } | |
108 | hvsi_udbg_buf_len--; | |
109 | ||
110 | return ch; | |
111 | } | |
112 | ||
bb6b9b28 | 113 | static int udbg_hvsi_getc(void) |
1da177e4 LT |
114 | { |
115 | int ch; | |
116 | for (;;) { | |
117 | ch = udbg_hvsi_getc_poll(); | |
118 | if (ch == -1) { | |
119 | /* This shouldn't be needed...but... */ | |
120 | volatile unsigned long delay; | |
121 | for (delay=0; delay < 2000000; delay++) | |
122 | ; | |
123 | } else { | |
124 | return ch; | |
125 | } | |
126 | } | |
127 | } | |
128 | ||
51d3082f | 129 | static void udbg_putcLP(char c) |
1da177e4 LT |
130 | { |
131 | char buf[16]; | |
132 | unsigned long rc; | |
133 | ||
134 | if (c == '\n') | |
135 | udbg_putcLP('\r'); | |
136 | ||
137 | buf[0] = c; | |
138 | do { | |
139 | rc = plpar_put_term_char(vtermno, 1, buf); | |
706c8c93 | 140 | } while(rc == H_BUSY); |
1da177e4 LT |
141 | } |
142 | ||
143 | /* Buffered chars getc */ | |
144 | static long inbuflen; | |
145 | static long inbuf[2]; /* must be 2 longs */ | |
146 | ||
147 | static int udbg_getc_pollLP(void) | |
148 | { | |
149 | /* The interface is tricky because it may return up to 16 chars. | |
150 | * We save them statically for future calls to udbg_getc(). | |
151 | */ | |
152 | char ch, *buf = (char *)inbuf; | |
153 | int i; | |
154 | long rc; | |
155 | if (inbuflen == 0) { | |
156 | /* get some more chars. */ | |
157 | inbuflen = 0; | |
158 | rc = plpar_get_term_char(vtermno, &inbuflen, buf); | |
706c8c93 | 159 | if (rc != H_SUCCESS) |
1da177e4 LT |
160 | inbuflen = 0; /* otherwise inbuflen is garbage */ |
161 | } | |
162 | if (inbuflen <= 0 || inbuflen > 16) { | |
163 | /* Catch error case as well as other oddities (corruption) */ | |
164 | inbuflen = 0; | |
165 | return -1; | |
166 | } | |
167 | ch = buf[0]; | |
168 | for (i = 1; i < inbuflen; i++) /* shuffle them down. */ | |
169 | buf[i-1] = buf[i]; | |
170 | inbuflen--; | |
171 | return ch; | |
172 | } | |
173 | ||
bb6b9b28 | 174 | static int udbg_getcLP(void) |
1da177e4 LT |
175 | { |
176 | int ch; | |
177 | for (;;) { | |
178 | ch = udbg_getc_pollLP(); | |
179 | if (ch == -1) { | |
180 | /* This shouldn't be needed...but... */ | |
181 | volatile unsigned long delay; | |
182 | for (delay=0; delay < 2000000; delay++) | |
183 | ; | |
184 | } else { | |
185 | return ch; | |
186 | } | |
187 | } | |
188 | } | |
189 | ||
190 | /* call this from early_init() for a working debug console on | |
191 | * vterm capable LPAR machines | |
192 | */ | |
463ce0e1 | 193 | void __init udbg_init_debug_lpar(void) |
1da177e4 LT |
194 | { |
195 | vtermno = 0; | |
c8f1c8be MM |
196 | udbg_putc = udbg_putcLP; |
197 | udbg_getc = udbg_getcLP; | |
198 | udbg_getc_poll = udbg_getc_pollLP; | |
1da177e4 LT |
199 | } |
200 | ||
201 | /* returns 0 if couldn't find or use /chosen/stdout as console */ | |
463ce0e1 | 202 | void __init find_udbg_vterm(void) |
1da177e4 LT |
203 | { |
204 | struct device_node *stdout_node; | |
954a46e2 JK |
205 | const u32 *termno; |
206 | const char *name; | |
463ce0e1 | 207 | int add_console; |
1da177e4 LT |
208 | |
209 | /* find the boot console from /chosen/stdout */ | |
210 | if (!of_chosen) | |
463ce0e1 | 211 | return; |
e2eb6392 | 212 | name = of_get_property(of_chosen, "linux,stdout-path", NULL); |
1da177e4 | 213 | if (name == NULL) |
463ce0e1 | 214 | return; |
1da177e4 LT |
215 | stdout_node = of_find_node_by_path(name); |
216 | if (!stdout_node) | |
463ce0e1 | 217 | return; |
e2eb6392 | 218 | name = of_get_property(stdout_node, "name", NULL); |
1da177e4 LT |
219 | if (!name) { |
220 | printk(KERN_WARNING "stdout node missing 'name' property!\n"); | |
221 | goto out; | |
222 | } | |
463ce0e1 BH |
223 | /* The user has requested a console so this is already set up. */ |
224 | add_console = !strstr(cmd_line, "console="); | |
1da177e4 | 225 | |
463ce0e1 BH |
226 | /* Check if it's a virtual terminal */ |
227 | if (strncmp(name, "vty", 3) != 0) | |
228 | goto out; | |
e2eb6392 | 229 | termno = of_get_property(stdout_node, "reg", NULL); |
463ce0e1 BH |
230 | if (termno == NULL) |
231 | goto out; | |
232 | vtermno = termno[0]; | |
233 | ||
55b61fec | 234 | if (of_device_is_compatible(stdout_node, "hvterm1")) { |
463ce0e1 BH |
235 | udbg_putc = udbg_putcLP; |
236 | udbg_getc = udbg_getcLP; | |
237 | udbg_getc_poll = udbg_getc_pollLP; | |
238 | if (add_console) | |
239 | add_preferred_console("hvc", termno[0] & 0xff, NULL); | |
55b61fec | 240 | } else if (of_device_is_compatible(stdout_node, "hvterm-protocol")) { |
463ce0e1 BH |
241 | vtermno = termno[0]; |
242 | udbg_putc = udbg_hvsi_putc; | |
243 | udbg_getc = udbg_hvsi_getc; | |
244 | udbg_getc_poll = udbg_hvsi_getc_poll; | |
245 | if (add_console) | |
246 | add_preferred_console("hvsi", termno[0] & 0xff, NULL); | |
1da177e4 | 247 | } |
1da177e4 LT |
248 | out: |
249 | of_node_put(stdout_node); | |
1da177e4 LT |
250 | } |
251 | ||
252 | void vpa_init(int cpu) | |
253 | { | |
254 | int hwcpu = get_hard_smp_processor_id(cpu); | |
2f6093c8 | 255 | unsigned long addr; |
1da177e4 | 256 | long ret; |
233ccd0d OJ |
257 | |
258 | if (cpu_has_feature(CPU_FTR_ALTIVEC)) | |
3356bb9f | 259 | lppaca[cpu].vmxregs_in_use = 1; |
233ccd0d | 260 | |
2f6093c8 MN |
261 | addr = __pa(&lppaca[cpu]); |
262 | ret = register_vpa(hwcpu, addr); | |
1da177e4 | 263 | |
2f6093c8 | 264 | if (ret) { |
1da177e4 LT |
265 | printk(KERN_ERR "WARNING: vpa_init: VPA registration for " |
266 | "cpu %d (hw %d) of area %lx returns %ld\n", | |
2f6093c8 MN |
267 | cpu, hwcpu, addr, ret); |
268 | return; | |
269 | } | |
270 | /* | |
271 | * PAPR says this feature is SLB-Buffer but firmware never | |
272 | * reports that. All SPLPAR support SLB shadow buffer. | |
273 | */ | |
274 | addr = __pa(&slb_shadow[cpu]); | |
275 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { | |
276 | ret = register_slb_shadow(hwcpu, addr); | |
277 | if (ret) | |
278 | printk(KERN_ERR | |
279 | "WARNING: vpa_init: SLB shadow buffer " | |
280 | "registration for cpu %d (hw %d) of area %lx " | |
281 | "returns %ld\n", cpu, hwcpu, addr, ret); | |
282 | } | |
1da177e4 LT |
283 | } |
284 | ||
035223fb | 285 | static long pSeries_lpar_hpte_insert(unsigned long hpte_group, |
3c726f8d BH |
286 | unsigned long va, unsigned long pa, |
287 | unsigned long rflags, unsigned long vflags, | |
288 | int psize) | |
1da177e4 | 289 | { |
1da177e4 LT |
290 | unsigned long lpar_rc; |
291 | unsigned long flags; | |
292 | unsigned long slot; | |
96e28449 | 293 | unsigned long hpte_v, hpte_r; |
1da177e4 | 294 | |
3c726f8d BH |
295 | if (!(vflags & HPTE_V_BOLTED)) |
296 | DBG_LOW("hpte_insert(group=%lx, va=%016lx, pa=%016lx, " | |
297 | "rflags=%lx, vflags=%lx, psize=%d)\n", | |
298 | hpte_group, va, pa, rflags, vflags, psize); | |
299 | ||
300 | hpte_v = hpte_encode_v(va, psize) | vflags | HPTE_V_VALID; | |
301 | hpte_r = hpte_encode_r(pa, psize) | rflags; | |
302 | ||
303 | if (!(vflags & HPTE_V_BOLTED)) | |
304 | DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r); | |
305 | ||
1da177e4 LT |
306 | /* Now fill in the actual HPTE */ |
307 | /* Set CEC cookie to 0 */ | |
308 | /* Zero page = 0 */ | |
309 | /* I-cache Invalidate = 0 */ | |
310 | /* I-cache synchronize = 0 */ | |
311 | /* Exact = 0 */ | |
312 | flags = 0; | |
313 | ||
3c726f8d | 314 | /* Make pHyp happy */ |
96e28449 DG |
315 | if (rflags & (_PAGE_GUARDED|_PAGE_NO_CACHE)) |
316 | hpte_r &= ~_PAGE_COHERENT; | |
1da177e4 | 317 | |
b9377ffc | 318 | lpar_rc = plpar_pte_enter(flags, hpte_group, hpte_v, hpte_r, &slot); |
706c8c93 | 319 | if (unlikely(lpar_rc == H_PTEG_FULL)) { |
3c726f8d BH |
320 | if (!(vflags & HPTE_V_BOLTED)) |
321 | DBG_LOW(" full\n"); | |
1da177e4 | 322 | return -1; |
3c726f8d | 323 | } |
1da177e4 LT |
324 | |
325 | /* | |
326 | * Since we try and ioremap PHBs we don't own, the pte insert | |
327 | * will fail. However we must catch the failure in hash_page | |
328 | * or we will loop forever, so return -2 in this case. | |
329 | */ | |
706c8c93 | 330 | if (unlikely(lpar_rc != H_SUCCESS)) { |
3c726f8d BH |
331 | if (!(vflags & HPTE_V_BOLTED)) |
332 | DBG_LOW(" lpar err %d\n", lpar_rc); | |
1da177e4 | 333 | return -2; |
3c726f8d BH |
334 | } |
335 | if (!(vflags & HPTE_V_BOLTED)) | |
336 | DBG_LOW(" -> slot: %d\n", slot & 7); | |
1da177e4 LT |
337 | |
338 | /* Because of iSeries, we have to pass down the secondary | |
339 | * bucket bit here as well | |
340 | */ | |
96e28449 | 341 | return (slot & 7) | (!!(vflags & HPTE_V_SECONDARY) << 3); |
1da177e4 LT |
342 | } |
343 | ||
344 | static DEFINE_SPINLOCK(pSeries_lpar_tlbie_lock); | |
345 | ||
346 | static long pSeries_lpar_hpte_remove(unsigned long hpte_group) | |
347 | { | |
348 | unsigned long slot_offset; | |
349 | unsigned long lpar_rc; | |
350 | int i; | |
351 | unsigned long dummy1, dummy2; | |
352 | ||
353 | /* pick a random slot to start at */ | |
354 | slot_offset = mftb() & 0x7; | |
355 | ||
356 | for (i = 0; i < HPTES_PER_GROUP; i++) { | |
357 | ||
358 | /* don't remove a bolted entry */ | |
359 | lpar_rc = plpar_pte_remove(H_ANDCOND, hpte_group + slot_offset, | |
360 | (0x1UL << 4), &dummy1, &dummy2); | |
706c8c93 | 361 | if (lpar_rc == H_SUCCESS) |
1da177e4 | 362 | return i; |
706c8c93 | 363 | BUG_ON(lpar_rc != H_NOT_FOUND); |
1da177e4 LT |
364 | |
365 | slot_offset++; | |
366 | slot_offset &= 0x7; | |
367 | } | |
368 | ||
369 | return -1; | |
370 | } | |
371 | ||
372 | static void pSeries_lpar_hptab_clear(void) | |
373 | { | |
374 | unsigned long size_bytes = 1UL << ppc64_pft_size; | |
375 | unsigned long hpte_count = size_bytes >> 4; | |
376 | unsigned long dummy1, dummy2; | |
377 | int i; | |
378 | ||
379 | /* TODO: Use bulk call */ | |
380 | for (i = 0; i < hpte_count; i++) | |
b4aea36b | 381 | plpar_pte_remove_raw(0, i, 0, &dummy1, &dummy2); |
1da177e4 LT |
382 | } |
383 | ||
384 | /* | |
385 | * NOTE: for updatepp ops we are fortunate that the linux "newpp" bits and | |
386 | * the low 3 bits of flags happen to line up. So no transform is needed. | |
387 | * We can probably optimize here and assume the high bits of newpp are | |
388 | * already zero. For now I am paranoid. | |
389 | */ | |
3c726f8d BH |
390 | static long pSeries_lpar_hpte_updatepp(unsigned long slot, |
391 | unsigned long newpp, | |
392 | unsigned long va, | |
393 | int psize, int local) | |
1da177e4 LT |
394 | { |
395 | unsigned long lpar_rc; | |
396 | unsigned long flags = (newpp & 7) | H_AVPN; | |
3c726f8d | 397 | unsigned long want_v; |
1da177e4 | 398 | |
3c726f8d | 399 | want_v = hpte_encode_v(va, psize); |
1da177e4 | 400 | |
3c726f8d BH |
401 | DBG_LOW(" update: avpnv=%016lx, hash=%016lx, f=%x, psize: %d ... ", |
402 | want_v & HPTE_V_AVPN, slot, flags, psize); | |
1da177e4 | 403 | |
3c726f8d BH |
404 | lpar_rc = plpar_pte_protect(flags, slot, want_v & HPTE_V_AVPN); |
405 | ||
706c8c93 | 406 | if (lpar_rc == H_NOT_FOUND) { |
3c726f8d | 407 | DBG_LOW("not found !\n"); |
1da177e4 | 408 | return -1; |
3c726f8d BH |
409 | } |
410 | ||
411 | DBG_LOW("ok\n"); | |
1da177e4 | 412 | |
706c8c93 | 413 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
414 | |
415 | return 0; | |
416 | } | |
417 | ||
418 | static unsigned long pSeries_lpar_hpte_getword0(unsigned long slot) | |
419 | { | |
420 | unsigned long dword0; | |
421 | unsigned long lpar_rc; | |
422 | unsigned long dummy_word1; | |
423 | unsigned long flags; | |
424 | ||
425 | /* Read 1 pte at a time */ | |
426 | /* Do not need RPN to logical page translation */ | |
427 | /* No cross CEC PFT access */ | |
428 | flags = 0; | |
429 | ||
430 | lpar_rc = plpar_pte_read(flags, slot, &dword0, &dummy_word1); | |
431 | ||
706c8c93 | 432 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
433 | |
434 | return dword0; | |
435 | } | |
436 | ||
3c726f8d | 437 | static long pSeries_lpar_hpte_find(unsigned long va, int psize) |
1da177e4 LT |
438 | { |
439 | unsigned long hash; | |
440 | unsigned long i, j; | |
441 | long slot; | |
3c726f8d | 442 | unsigned long want_v, hpte_v; |
1da177e4 | 443 | |
3c726f8d BH |
444 | hash = hpt_hash(va, mmu_psize_defs[psize].shift); |
445 | want_v = hpte_encode_v(va, psize); | |
1da177e4 LT |
446 | |
447 | for (j = 0; j < 2; j++) { | |
448 | slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; | |
449 | for (i = 0; i < HPTES_PER_GROUP; i++) { | |
96e28449 | 450 | hpte_v = pSeries_lpar_hpte_getword0(slot); |
1da177e4 | 451 | |
3c726f8d | 452 | if (HPTE_V_COMPARE(hpte_v, want_v) |
96e28449 DG |
453 | && (hpte_v & HPTE_V_VALID) |
454 | && (!!(hpte_v & HPTE_V_SECONDARY) == j)) { | |
1da177e4 LT |
455 | /* HPTE matches */ |
456 | if (j) | |
457 | slot = -slot; | |
458 | return slot; | |
459 | } | |
460 | ++slot; | |
461 | } | |
462 | hash = ~hash; | |
463 | } | |
464 | ||
465 | return -1; | |
466 | } | |
467 | ||
468 | static void pSeries_lpar_hpte_updateboltedpp(unsigned long newpp, | |
3c726f8d BH |
469 | unsigned long ea, |
470 | int psize) | |
1da177e4 | 471 | { |
3c726f8d | 472 | unsigned long lpar_rc, slot, vsid, va, flags; |
1da177e4 LT |
473 | |
474 | vsid = get_kernel_vsid(ea); | |
475 | va = (vsid << 28) | (ea & 0x0fffffff); | |
1da177e4 | 476 | |
3c726f8d | 477 | slot = pSeries_lpar_hpte_find(va, psize); |
1da177e4 LT |
478 | BUG_ON(slot == -1); |
479 | ||
480 | flags = newpp & 7; | |
481 | lpar_rc = plpar_pte_protect(flags, slot, 0); | |
482 | ||
706c8c93 | 483 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
484 | } |
485 | ||
486 | static void pSeries_lpar_hpte_invalidate(unsigned long slot, unsigned long va, | |
3c726f8d | 487 | int psize, int local) |
1da177e4 | 488 | { |
3c726f8d | 489 | unsigned long want_v; |
1da177e4 LT |
490 | unsigned long lpar_rc; |
491 | unsigned long dummy1, dummy2; | |
492 | ||
3c726f8d BH |
493 | DBG_LOW(" inval : slot=%lx, va=%016lx, psize: %d, local: %d", |
494 | slot, va, psize, local); | |
1da177e4 | 495 | |
3c726f8d BH |
496 | want_v = hpte_encode_v(va, psize); |
497 | lpar_rc = plpar_pte_remove(H_AVPN, slot, want_v & HPTE_V_AVPN, | |
498 | &dummy1, &dummy2); | |
706c8c93 | 499 | if (lpar_rc == H_NOT_FOUND) |
1da177e4 LT |
500 | return; |
501 | ||
706c8c93 | 502 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 LT |
503 | } |
504 | ||
f03e64f2 PM |
505 | /* Flag bits for H_BULK_REMOVE */ |
506 | #define HBR_REQUEST 0x4000000000000000UL | |
507 | #define HBR_RESPONSE 0x8000000000000000UL | |
508 | #define HBR_END 0xc000000000000000UL | |
509 | #define HBR_AVPN 0x0200000000000000UL | |
510 | #define HBR_ANDCOND 0x0100000000000000UL | |
511 | ||
1da177e4 LT |
512 | /* |
513 | * Take a spinlock around flushes to avoid bouncing the hypervisor tlbie | |
514 | * lock. | |
515 | */ | |
035223fb | 516 | static void pSeries_lpar_flush_hash_range(unsigned long number, int local) |
1da177e4 | 517 | { |
f03e64f2 | 518 | unsigned long i, pix, rc; |
12e86f92 | 519 | unsigned long flags = 0; |
1da177e4 LT |
520 | struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch); |
521 | int lock_tlbie = !cpu_has_feature(CPU_FTR_LOCKLESS_TLBIE); | |
f03e64f2 PM |
522 | unsigned long param[9]; |
523 | unsigned long va; | |
524 | unsigned long hash, index, shift, hidx, slot; | |
525 | real_pte_t pte; | |
526 | int psize; | |
1da177e4 LT |
527 | |
528 | if (lock_tlbie) | |
529 | spin_lock_irqsave(&pSeries_lpar_tlbie_lock, flags); | |
530 | ||
f03e64f2 PM |
531 | psize = batch->psize; |
532 | pix = 0; | |
533 | for (i = 0; i < number; i++) { | |
534 | va = batch->vaddr[i]; | |
535 | pte = batch->pte[i]; | |
536 | pte_iterate_hashed_subpages(pte, psize, va, index, shift) { | |
537 | hash = hpt_hash(va, shift); | |
538 | hidx = __rpte_to_hidx(pte, index); | |
539 | if (hidx & _PTEIDX_SECONDARY) | |
540 | hash = ~hash; | |
541 | slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; | |
542 | slot += hidx & _PTEIDX_GROUP_IX; | |
12e86f92 PM |
543 | if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE)) { |
544 | pSeries_lpar_hpte_invalidate(slot, va, psize, | |
545 | local); | |
546 | } else { | |
547 | param[pix] = HBR_REQUEST | HBR_AVPN | slot; | |
548 | param[pix+1] = hpte_encode_v(va, psize) & | |
549 | HPTE_V_AVPN; | |
550 | pix += 2; | |
551 | if (pix == 8) { | |
552 | rc = plpar_hcall9(H_BULK_REMOVE, param, | |
f03e64f2 PM |
553 | param[0], param[1], param[2], |
554 | param[3], param[4], param[5], | |
555 | param[6], param[7]); | |
12e86f92 PM |
556 | BUG_ON(rc != H_SUCCESS); |
557 | pix = 0; | |
558 | } | |
f03e64f2 PM |
559 | } |
560 | } pte_iterate_hashed_end(); | |
561 | } | |
562 | if (pix) { | |
563 | param[pix] = HBR_END; | |
564 | rc = plpar_hcall9(H_BULK_REMOVE, param, param[0], param[1], | |
565 | param[2], param[3], param[4], param[5], | |
566 | param[6], param[7]); | |
567 | BUG_ON(rc != H_SUCCESS); | |
568 | } | |
1da177e4 LT |
569 | |
570 | if (lock_tlbie) | |
571 | spin_unlock_irqrestore(&pSeries_lpar_tlbie_lock, flags); | |
572 | } | |
573 | ||
7d0daae4 | 574 | void __init hpte_init_lpar(void) |
1da177e4 LT |
575 | { |
576 | ppc_md.hpte_invalidate = pSeries_lpar_hpte_invalidate; | |
577 | ppc_md.hpte_updatepp = pSeries_lpar_hpte_updatepp; | |
578 | ppc_md.hpte_updateboltedpp = pSeries_lpar_hpte_updateboltedpp; | |
579 | ppc_md.hpte_insert = pSeries_lpar_hpte_insert; | |
580 | ppc_md.hpte_remove = pSeries_lpar_hpte_remove; | |
581 | ppc_md.flush_hash_range = pSeries_lpar_flush_hash_range; | |
582 | ppc_md.hpte_clear_all = pSeries_lpar_hptab_clear; | |
1da177e4 | 583 | } |