1 --- a/arch/mips/include/asm/r4kcache.h
2 +++ b/arch/mips/include/asm/r4kcache.h
4 extern void (*r4k_blast_dcache)(void);
5 extern void (*r4k_blast_icache)(void);
7 +#if defined(CONFIG_BCM47XX) && !defined(CONFIG_CPU_MIPS32_R2)
8 +#include <asm/paccess.h>
9 +#include <linux/ssb/ssb.h>
10 +#define BCM4710_DUMMY_RREG() bcm4710_dummy_rreg()
12 +static inline unsigned long bcm4710_dummy_rreg(void)
14 + return *(volatile unsigned long *)(KSEG1ADDR(SSB_ENUM_BASE));
17 +#define BCM4710_FILL_TLB(addr) bcm4710_fill_tlb((void *)(addr))
19 +static inline unsigned long bcm4710_fill_tlb(void *addr)
21 + return *(unsigned long *)addr;
24 +#define BCM4710_PROTECTED_FILL_TLB(addr) bcm4710_protected_fill_tlb((void *)(addr))
26 +static inline void bcm4710_protected_fill_tlb(void *addr)
29 + get_dbe(x, (unsigned long *)addr);;
33 +#define BCM4710_DUMMY_RREG()
35 +#define BCM4710_FILL_TLB(addr)
36 +#define BCM4710_PROTECTED_FILL_TLB(addr)
40 * This macro return a properly sign-extended address suitable as base address
41 * for indexed cache operations. Two issues here:
42 @@ -99,6 +131,7 @@ static inline void flush_icache_line_ind
43 static inline void flush_dcache_line_indexed(unsigned long addr)
46 + BCM4710_DUMMY_RREG();
47 cache_op(Index_Writeback_Inv_D, addr);
50 @@ -126,6 +159,7 @@ static inline void flush_icache_line(uns
51 static inline void flush_dcache_line(unsigned long addr)
54 + BCM4710_DUMMY_RREG();
55 cache_op(Hit_Writeback_Inv_D, addr);
58 @@ -133,6 +167,7 @@ static inline void flush_dcache_line(uns
59 static inline void invalidate_dcache_line(unsigned long addr)
62 + BCM4710_DUMMY_RREG();
63 cache_op(Hit_Invalidate_D, addr);
66 @@ -206,6 +241,7 @@ static inline int protected_flush_icache
68 return protected_cachee_op(Hit_Invalidate_I, addr);
70 + BCM4710_DUMMY_RREG();
71 return protected_cache_op(Hit_Invalidate_I, addr);
74 @@ -219,6 +255,7 @@ static inline int protected_flush_icache
76 static inline int protected_writeback_dcache_line(unsigned long addr)
78 + BCM4710_DUMMY_RREG();
80 return protected_cachee_op(Hit_Writeback_Inv_D, addr);
82 @@ -576,8 +613,51 @@ static inline void invalidate_tcache_pag
86 +static inline void blast_dcache(void)
88 + unsigned long start = KSEG0;
89 + unsigned long dcache_size = current_cpu_data.dcache.waysize * current_cpu_data.dcache.ways;
90 + unsigned long end = (start + dcache_size);
93 + BCM4710_DUMMY_RREG();
94 + cache_op(Index_Writeback_Inv_D, start);
95 + start += current_cpu_data.dcache.linesz;
96 + } while(start < end);
99 +static inline void blast_dcache_page(unsigned long page)
101 + unsigned long start = page;
102 + unsigned long end = start + PAGE_SIZE;
104 + BCM4710_FILL_TLB(start);
106 + BCM4710_DUMMY_RREG();
107 + cache_op(Hit_Writeback_Inv_D, start);
108 + start += current_cpu_data.dcache.linesz;
109 + } while(start < end);
112 +static inline void blast_dcache_page_indexed(unsigned long page)
114 + unsigned long start = page;
115 + unsigned long end = start + PAGE_SIZE;
116 + unsigned long ws_inc = 1UL << current_cpu_data.dcache.waybit;
117 + unsigned long ws_end = current_cpu_data.dcache.ways <<
118 + current_cpu_data.dcache.waybit;
119 + unsigned long ws, addr;
120 + for (ws = 0; ws < ws_end; ws += ws_inc) {
122 + for (addr = start; addr < end; addr += current_cpu_data.dcache.linesz) {
123 + BCM4710_DUMMY_RREG();
124 + cache_op(Index_Writeback_Inv_D, addr);
129 /* build blast_xxx, blast_xxx_page, blast_xxx_page_indexed */
130 -#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra) \
131 +#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra, war) \
132 static inline void extra##blast_##pfx##cache##lsize(void) \
134 unsigned long start = INDEX_BASE; \
135 @@ -589,6 +669,7 @@ static inline void extra##blast_##pfx##c
137 __##pfx##flush_prologue \
140 for (ws = 0; ws < ws_end; ws += ws_inc) \
141 for (addr = start; addr < end; addr += lsize * 32) \
142 cache##lsize##_unroll32(addr|ws, indexop); \
143 @@ -603,6 +684,7 @@ static inline void extra##blast_##pfx##c
145 __##pfx##flush_prologue \
149 cache##lsize##_unroll32(start, hitop); \
150 start += lsize * 32; \
151 @@ -621,6 +703,8 @@ static inline void extra##blast_##pfx##c
152 current_cpu_data.desc.waybit; \
153 unsigned long ws, addr; \
157 __##pfx##flush_prologue \
159 for (ws = 0; ws < ws_end; ws += ws_inc) \
160 @@ -630,26 +714,26 @@ static inline void extra##blast_##pfx##c
161 __##pfx##flush_epilogue \
164 -__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16, )
165 -__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16, )
166 -__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, )
167 -__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32, )
168 -__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32, )
169 -__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_)
170 -__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32, )
171 -__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64, )
172 -__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64, )
173 -__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, )
174 -__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, )
175 -__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, )
176 -__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128, )
178 -__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16, )
179 -__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, )
180 -__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16, )
181 -__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32, )
182 -__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, )
183 -__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, )
184 +__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16, , )
185 +__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16, , BCM4710_FILL_TLB(start);)
186 +__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, , )
187 +__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32, , )
188 +__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32, , BCM4710_FILL_TLB(start);)
189 +__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_, BCM4710_FILL_TLB(start);)
190 +__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32, , )
191 +__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64, , )
192 +__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64, , BCM4710_FILL_TLB(start);)
193 +__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, , )
194 +__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, , )
195 +__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, , )
196 +__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128, , )
198 +__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16, , )
199 +__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, , )
200 +__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16, , )
201 +__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32, , )
202 +__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, , )
203 +__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, , )
205 #define __BUILD_BLAST_USER_CACHE(pfx, desc, indexop, hitop, lsize) \
206 static inline void blast_##pfx##cache##lsize##_user_page(unsigned long page) \
207 @@ -678,53 +762,23 @@ __BUILD_BLAST_USER_CACHE(d, dcache, Inde
208 __BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
210 /* build blast_xxx_range, protected_blast_xxx_range */
211 -#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra) \
212 +#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra, war, war2) \
213 static inline void prot##extra##blast_##pfx##cache##_range(unsigned long start, \
216 unsigned long lsize = cpu_##desc##_line_size(); \
217 - unsigned long lsize_2 = lsize * 2; \
218 - unsigned long lsize_3 = lsize * 3; \
219 - unsigned long lsize_4 = lsize * 4; \
220 - unsigned long lsize_5 = lsize * 5; \
221 - unsigned long lsize_6 = lsize * 6; \
222 - unsigned long lsize_7 = lsize * 7; \
223 - unsigned long lsize_8 = lsize * 8; \
224 unsigned long addr = start & ~(lsize - 1); \
225 - unsigned long aend = (end + lsize - 1) & ~(lsize - 1); \
226 - int lines = (aend - addr) / lsize; \
227 + unsigned long aend = (end - 1) & ~(lsize - 1); \
230 __##pfx##flush_prologue \
232 - while (lines >= 8) { \
233 - prot##cache_op(hitop, addr); \
234 - prot##cache_op(hitop, addr + lsize); \
235 - prot##cache_op(hitop, addr + lsize_2); \
236 - prot##cache_op(hitop, addr + lsize_3); \
237 - prot##cache_op(hitop, addr + lsize_4); \
238 - prot##cache_op(hitop, addr + lsize_5); \
239 - prot##cache_op(hitop, addr + lsize_6); \
240 - prot##cache_op(hitop, addr + lsize_7); \
245 - if (lines & 0x4) { \
246 - prot##cache_op(hitop, addr); \
247 - prot##cache_op(hitop, addr + lsize); \
248 - prot##cache_op(hitop, addr + lsize_2); \
249 - prot##cache_op(hitop, addr + lsize_3); \
253 - if (lines & 0x2) { \
254 - prot##cache_op(hitop, addr); \
255 - prot##cache_op(hitop, addr + lsize); \
259 - if (lines & 0x1) { \
262 prot##cache_op(hitop, addr); \
263 + if (addr == aend) \
268 __##pfx##flush_epilogue \
269 @@ -732,8 +786,8 @@ static inline void prot##extra##blast_##
273 -__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, )
274 -__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, )
275 +__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, , BCM4710_PROTECTED_FILL_TLB(addr); BCM4710_PROTECTED_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
276 +__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, , , )
280 @@ -770,15 +824,15 @@ __BUILD_PROT_BLAST_CACHE_RANGE(d, dcache
281 __BUILD_PROT_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I)
284 -__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, )
285 +__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, , , )
286 __BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I_Loongson2, \
287 - protected_, loongson2_)
288 -__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , )
289 -__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , )
290 -__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , )
291 + protected_, loongson2_, , )
292 +__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , , BCM4710_FILL_TLB(addr); BCM4710_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
293 +__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , , , )
294 +__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , , , )
295 /* blast_inv_dcache_range */
296 -__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , )
297 -__BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , )
298 +__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , , , BCM4710_DUMMY_RREG();)
299 +__BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , , , )
301 /* Currently, this is very specific to Loongson-3 */
302 #define __BUILD_BLAST_CACHE_NODE(pfx, desc, indexop, hitop, lsize) \
303 --- a/arch/mips/include/asm/stackframe.h
304 +++ b/arch/mips/include/asm/stackframe.h
309 +#ifdef CONFIG_BCM47XX
316 --- a/arch/mips/kernel/genex.S
317 +++ b/arch/mips/kernel/genex.S
320 #include <asm/thread_info.h>
322 +#ifdef CONFIG_BCM47XX
339 NESTED(except_vec3_generic, 0, sp)
342 +#ifdef CONFIG_BCM47XX
345 #if R5432_CP0_INTERRUPT_WAR
348 @@ -55,6 +71,9 @@ NESTED(except_vec3_r4000, 0, sp)
352 +#ifdef CONFIG_BCM47XX
358 --- a/arch/mips/mm/c-r4k.c
359 +++ b/arch/mips/mm/c-r4k.c
361 #include <asm/dma-coherence.h>
362 #include <asm/mips-cps.h>
364 +/* For enabling BCM4710 cache workarounds */
365 +static int bcm4710 = 0;
368 * Bits describing what cache ops an SMP callback function may perform.
370 @@ -190,6 +193,9 @@ static void r4k_blast_dcache_user_page_s
372 unsigned long dc_lsize = cpu_dcache_line_size();
375 + r4k_blast_dcache_page = blast_dcache_page;
378 r4k_blast_dcache_user_page = (void *)cache_noop;
379 else if (dc_lsize == 16)
380 @@ -208,6 +214,9 @@ static void r4k_blast_dcache_page_indexe
382 unsigned long dc_lsize = cpu_dcache_line_size();
385 + r4k_blast_dcache_page_indexed = blast_dcache_page_indexed;
388 r4k_blast_dcache_page_indexed = (void *)cache_noop;
389 else if (dc_lsize == 16)
390 @@ -227,6 +236,9 @@ static void r4k_blast_dcache_setup(void)
392 unsigned long dc_lsize = cpu_dcache_line_size();
395 + r4k_blast_dcache = blast_dcache;
398 r4k_blast_dcache = (void *)cache_noop;
399 else if (dc_lsize == 16)
400 @@ -986,6 +998,8 @@ static void local_r4k_flush_cache_sigtra
403 R4600_HIT_CACHEOP_WAR_IMPL;
404 + BCM4710_PROTECTED_FILL_TLB(addr);
405 + BCM4710_PROTECTED_FILL_TLB(addr + 4);
406 if (!cpu_has_ic_fills_f_dc) {
408 vaddr ? flush_dcache_line(addr & ~(dc_lsize - 1))
409 @@ -1880,6 +1894,17 @@ static void coherency_setup(void)
410 * silly idea of putting something else there ...
412 switch (current_cpu_type()) {
413 + case CPU_BMIPS3300:
416 + cm = read_c0_diag();
417 + /* Enable icache */
419 + /* Enable dcache */
427 @@ -1926,6 +1951,15 @@ void r4k_cache_init(void)
428 extern void build_copy_page(void);
429 struct cpuinfo_mips *c = ¤t_cpu_data;
431 + /* Check if special workarounds are required */
432 +#if defined(CONFIG_BCM47XX) && !defined(CONFIG_CPU_MIPS32_R2)
433 + if (current_cpu_data.cputype == CPU_BMIPS32 && (current_cpu_data.processor_id & 0xff) == 0) {
434 + printk("Enabling BCM4710A0 cache workarounds.\n");
443 @@ -2004,7 +2038,15 @@ void r4k_cache_init(void)
445 local_r4k___flush_cache_all(NULL);
447 +#ifdef CONFIG_BCM47XX
449 + static void (*_coherency_setup)(void);
450 + _coherency_setup = (void (*)(void)) KSEG1ADDR(coherency_setup);
451 + _coherency_setup();
456 board_cache_error_setup = r4k_cache_error_setup;
459 --- a/arch/mips/mm/tlbex.c
460 +++ b/arch/mips/mm/tlbex.c
461 @@ -976,6 +976,9 @@ void build_get_pgde32(u32 **p, unsigned
462 uasm_i_srl(p, ptr, ptr, SMP_CPUID_PTRSHIFT);
463 uasm_i_addu(p, ptr, tmp, ptr);
465 +#ifdef CONFIG_BCM47XX
468 UASM_i_LA_mostly(p, ptr, pgdc);
470 uasm_i_mfc0(p, tmp, C0_BADVADDR); /* get faulting address */
471 @@ -1337,6 +1340,9 @@ static void build_r4000_tlb_refill_handl
473 build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */
475 +# ifdef CONFIG_BCM47XX
478 build_get_pgde32(&p, K0, K1); /* get pgd in K1 */
481 @@ -1348,6 +1354,9 @@ static void build_r4000_tlb_refill_handl
482 build_update_entries(&p, K0, K1);
483 build_tlb_write_entry(&p, &l, &r, tlb_random);
485 +#ifdef CONFIG_BCM47XX
488 uasm_i_eret(&p); /* return from trap */
490 #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
491 @@ -2057,6 +2066,9 @@ build_r4000_tlbchange_handler_head(u32 *
493 build_get_pmde64(p, l, r, wr.r1, wr.r2); /* get pmd in ptr */
495 +# ifdef CONFIG_BCM47XX
498 build_get_pgde32(p, wr.r1, wr.r2); /* get pgd in ptr */
501 @@ -2103,6 +2115,9 @@ build_r4000_tlbchange_handler_tail(u32 *
502 build_tlb_write_entry(p, l, r, tlb_indexed);
504 build_restore_work_registers(p);
505 +#ifdef CONFIG_BCM47XX
508 uasm_i_eret(p); /* return from trap */