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v4.6
  1/*
  2 * This file is subject to the terms and conditions of the GNU General Public
  3 * License.  See the file "COPYING" in the main directory of this archive
  4 * for more details.
  5 *
  6 * Copyright (C) 2003, 2004 Ralf Baechle
  7 * Copyright (C) 2004  Maciej W. Rozycki
  8 */
  9#ifndef __ASM_CPU_FEATURES_H
 10#define __ASM_CPU_FEATURES_H
 11
 12#include <asm/cpu.h>
 13#include <asm/cpu-info.h>
 
 14#include <cpu-feature-overrides.h>
 15
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 16/*
 17 * SMP assumption: Options of CPU 0 are a superset of all processors.
 18 * This is true for all known MIPS systems.
 19 */
 20#ifndef cpu_has_tlb
 21#define cpu_has_tlb		(cpu_data[0].options & MIPS_CPU_TLB)
 22#endif
 23#ifndef cpu_has_ftlb
 24#define cpu_has_ftlb		(cpu_data[0].options & MIPS_CPU_FTLB)
 25#endif
 26#ifndef cpu_has_tlbinv
 27#define cpu_has_tlbinv		(cpu_data[0].options & MIPS_CPU_TLBINV)
 28#endif
 29#ifndef cpu_has_segments
 30#define cpu_has_segments	(cpu_data[0].options & MIPS_CPU_SEGMENTS)
 31#endif
 32#ifndef cpu_has_eva
 33#define cpu_has_eva		(cpu_data[0].options & MIPS_CPU_EVA)
 34#endif
 35#ifndef cpu_has_htw
 36#define cpu_has_htw		(cpu_data[0].options & MIPS_CPU_HTW)
 
 
 
 37#endif
 38#ifndef cpu_has_rixiex
 39#define cpu_has_rixiex		(cpu_data[0].options & MIPS_CPU_RIXIEX)
 40#endif
 41#ifndef cpu_has_maar
 42#define cpu_has_maar		(cpu_data[0].options & MIPS_CPU_MAAR)
 43#endif
 44#ifndef cpu_has_rw_llb
 45#define cpu_has_rw_llb		(cpu_data[0].options & MIPS_CPU_RW_LLB)
 46#endif
 47
 48/*
 49 * For the moment we don't consider R6000 and R8000 so we can assume that
 50 * anything that doesn't support R4000-style exceptions and interrupts is
 51 * R3000-like.  Users should still treat these two macro definitions as
 52 * opaque.
 53 */
 54#ifndef cpu_has_3kex
 55#define cpu_has_3kex		(!cpu_has_4kex)
 56#endif
 57#ifndef cpu_has_4kex
 58#define cpu_has_4kex		(cpu_data[0].options & MIPS_CPU_4KEX)
 59#endif
 60#ifndef cpu_has_3k_cache
 61#define cpu_has_3k_cache	(cpu_data[0].options & MIPS_CPU_3K_CACHE)
 62#endif
 63#define cpu_has_6k_cache	0
 64#define cpu_has_8k_cache	0
 65#ifndef cpu_has_4k_cache
 66#define cpu_has_4k_cache	(cpu_data[0].options & MIPS_CPU_4K_CACHE)
 67#endif
 68#ifndef cpu_has_tx39_cache
 69#define cpu_has_tx39_cache	(cpu_data[0].options & MIPS_CPU_TX39_CACHE)
 70#endif
 71#ifndef cpu_has_octeon_cache
 72#define cpu_has_octeon_cache	0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 73#endif
 74/* Don't override `cpu_has_fpu' to 1 or the "nofpu" option won't work.  */
 75#ifndef cpu_has_fpu
 76#define cpu_has_fpu		(current_cpu_data.options & MIPS_CPU_FPU)
 77#define raw_cpu_has_fpu		(raw_current_cpu_data.options & MIPS_CPU_FPU)
 
 
 
 
 
 78#else
 79#define raw_cpu_has_fpu		cpu_has_fpu
 
 
 
 80#endif
 81#ifndef cpu_has_32fpr
 82#define cpu_has_32fpr		(cpu_data[0].options & MIPS_CPU_32FPR)
 83#endif
 84#ifndef cpu_has_counter
 85#define cpu_has_counter		(cpu_data[0].options & MIPS_CPU_COUNTER)
 86#endif
 87#ifndef cpu_has_watch
 88#define cpu_has_watch		(cpu_data[0].options & MIPS_CPU_WATCH)
 89#endif
 90#ifndef cpu_has_divec
 91#define cpu_has_divec		(cpu_data[0].options & MIPS_CPU_DIVEC)
 92#endif
 93#ifndef cpu_has_vce
 94#define cpu_has_vce		(cpu_data[0].options & MIPS_CPU_VCE)
 95#endif
 96#ifndef cpu_has_cache_cdex_p
 97#define cpu_has_cache_cdex_p	(cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
 98#endif
 99#ifndef cpu_has_cache_cdex_s
100#define cpu_has_cache_cdex_s	(cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
101#endif
102#ifndef cpu_has_prefetch
103#define cpu_has_prefetch	(cpu_data[0].options & MIPS_CPU_PREFETCH)
104#endif
105#ifndef cpu_has_mcheck
106#define cpu_has_mcheck		(cpu_data[0].options & MIPS_CPU_MCHECK)
107#endif
108#ifndef cpu_has_ejtag
109#define cpu_has_ejtag		(cpu_data[0].options & MIPS_CPU_EJTAG)
110#endif
111#ifndef cpu_has_llsc
112#define cpu_has_llsc		(cpu_data[0].options & MIPS_CPU_LLSC)
113#endif
114#ifndef cpu_has_bp_ghist
115#define cpu_has_bp_ghist	(cpu_data[0].options & MIPS_CPU_BP_GHIST)
116#endif
117#ifndef kernel_uses_llsc
118#define kernel_uses_llsc	cpu_has_llsc
119#endif
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
120#ifndef cpu_has_mips16
121#define cpu_has_mips16		(cpu_data[0].ases & MIPS_ASE_MIPS16)
 
 
 
122#endif
123#ifndef cpu_has_mdmx
124#define cpu_has_mdmx		(cpu_data[0].ases & MIPS_ASE_MDMX)
125#endif
126#ifndef cpu_has_mips3d
127#define cpu_has_mips3d		(cpu_data[0].ases & MIPS_ASE_MIPS3D)
128#endif
129#ifndef cpu_has_smartmips
130#define cpu_has_smartmips	(cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
131#endif
132
133#ifndef cpu_has_rixi
134#define cpu_has_rixi		(cpu_data[0].options & MIPS_CPU_RIXI)
135#endif
136
137#ifndef cpu_has_mmips
138# ifdef CONFIG_SYS_SUPPORTS_MICROMIPS
139#  define cpu_has_mmips		(cpu_data[0].options & MIPS_CPU_MICROMIPS)
 
 
140# else
141#  define cpu_has_mmips		0
142# endif
143#endif
144
 
 
 
 
 
 
145#ifndef cpu_has_xpa
146#define cpu_has_xpa		(cpu_data[0].options & MIPS_CPU_XPA)
147#endif
148#ifndef cpu_has_vtag_icache
149#define cpu_has_vtag_icache	(cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
150#endif
151#ifndef cpu_has_dc_aliases
152#define cpu_has_dc_aliases	(cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
153#endif
154#ifndef cpu_has_ic_fills_f_dc
155#define cpu_has_ic_fills_f_dc	(cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
156#endif
157#ifndef cpu_has_pindexed_dcache
158#define cpu_has_pindexed_dcache	(cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
159#endif
160#ifndef cpu_has_local_ebase
161#define cpu_has_local_ebase	1
162#endif
163
164/*
165 * I-Cache snoops remote store.	 This only matters on SMP.  Some multiprocessors
166 * such as the R10000 have I-Caches that snoop local stores; the embedded ones
167 * don't.  For maintaining I-cache coherency this means we need to flush the
168 * D-cache all the way back to whever the I-cache does refills from, so the
169 * I-cache has a chance to see the new data at all.  Then we have to flush the
170 * I-cache also.
171 * Note we may have been rescheduled and may no longer be running on the CPU
172 * that did the store so we can't optimize this into only doing the flush on
173 * the local CPU.
174 */
175#ifndef cpu_icache_snoops_remote_store
176#ifdef CONFIG_SMP
177#define cpu_icache_snoops_remote_store	(cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
178#else
179#define cpu_icache_snoops_remote_store	1
180#endif
181#endif
182
183#ifndef cpu_has_mips_1
184# define cpu_has_mips_1		(!cpu_has_mips_r6)
185#endif
186#ifndef cpu_has_mips_2
187# define cpu_has_mips_2		(cpu_data[0].isa_level & MIPS_CPU_ISA_II)
188#endif
189#ifndef cpu_has_mips_3
190# define cpu_has_mips_3		(cpu_data[0].isa_level & MIPS_CPU_ISA_III)
191#endif
192#ifndef cpu_has_mips_4
193# define cpu_has_mips_4		(cpu_data[0].isa_level & MIPS_CPU_ISA_IV)
194#endif
195#ifndef cpu_has_mips_5
196# define cpu_has_mips_5		(cpu_data[0].isa_level & MIPS_CPU_ISA_V)
197#endif
198#ifndef cpu_has_mips32r1
199# define cpu_has_mips32r1	(cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
200#endif
201#ifndef cpu_has_mips32r2
202# define cpu_has_mips32r2	(cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
 
 
 
203#endif
204#ifndef cpu_has_mips32r6
205# define cpu_has_mips32r6	(cpu_data[0].isa_level & MIPS_CPU_ISA_M32R6)
206#endif
207#ifndef cpu_has_mips64r1
208# define cpu_has_mips64r1	(cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
 
209#endif
210#ifndef cpu_has_mips64r2
211# define cpu_has_mips64r2	(cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
 
 
 
 
 
212#endif
213#ifndef cpu_has_mips64r6
214# define cpu_has_mips64r6	(cpu_data[0].isa_level & MIPS_CPU_ISA_M64R6)
215#endif
216
217/*
218 * Shortcuts ...
219 */
220#define cpu_has_mips_2_3_4_5	(cpu_has_mips_2 | cpu_has_mips_3_4_5)
221#define cpu_has_mips_3_4_5	(cpu_has_mips_3 | cpu_has_mips_4_5)
222#define cpu_has_mips_4_5	(cpu_has_mips_4 | cpu_has_mips_5)
223
224#define cpu_has_mips_2_3_4_5_r	(cpu_has_mips_2 | cpu_has_mips_3_4_5_r)
225#define cpu_has_mips_3_4_5_r	(cpu_has_mips_3 | cpu_has_mips_4_5_r)
226#define cpu_has_mips_4_5_r	(cpu_has_mips_4 | cpu_has_mips_5_r)
227#define cpu_has_mips_5_r	(cpu_has_mips_5 | cpu_has_mips_r)
228
229#define cpu_has_mips_3_4_5_64_r2_r6					\
230				(cpu_has_mips_3 | cpu_has_mips_4_5_64_r2_r6)
231#define cpu_has_mips_4_5_64_r2_r6					\
232				(cpu_has_mips_4_5 | cpu_has_mips64r1 |	\
233				 cpu_has_mips_r2 | cpu_has_mips_r6)
 
234
235#define cpu_has_mips32	(cpu_has_mips32r1 | cpu_has_mips32r2 | cpu_has_mips32r6)
236#define cpu_has_mips64	(cpu_has_mips64r1 | cpu_has_mips64r2 | cpu_has_mips64r6)
 
 
237#define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
238#define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
 
239#define cpu_has_mips_r6	(cpu_has_mips32r6 | cpu_has_mips64r6)
240#define cpu_has_mips_r	(cpu_has_mips32r1 | cpu_has_mips32r2 | \
241			 cpu_has_mips32r6 | cpu_has_mips64r1 | \
242			 cpu_has_mips64r2 | cpu_has_mips64r6)
243
244/* MIPSR2 and MIPSR6 have a lot of similarities */
245#define cpu_has_mips_r2_r6	(cpu_has_mips_r2 | cpu_has_mips_r6)
 
 
246
247/*
248 * cpu_has_mips_r2_exec_hazard - return if IHB is required on current processor
249 *
250 * Returns non-zero value if the current processor implementation requires
251 * an IHB instruction to deal with an instruction hazard as per MIPS R2
252 * architecture specification, zero otherwise.
253 */
254#ifndef cpu_has_mips_r2_exec_hazard
255#define cpu_has_mips_r2_exec_hazard					\
256({									\
257	int __res;							\
258									\
259	switch (current_cpu_type()) {					\
260	case CPU_M14KC:							\
261	case CPU_74K:							\
262	case CPU_1074K:							\
263	case CPU_PROAPTIV:						\
264	case CPU_P5600:							\
265	case CPU_M5150:							\
266	case CPU_QEMU_GENERIC:						\
267	case CPU_CAVIUM_OCTEON:						\
268	case CPU_CAVIUM_OCTEON_PLUS:					\
269	case CPU_CAVIUM_OCTEON2:					\
270	case CPU_CAVIUM_OCTEON3:					\
271		__res = 0;						\
272		break;							\
273									\
274	default:							\
275		__res = 1;						\
276	}								\
277									\
278	__res;								\
279})
280#endif
281
282/*
283 * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
284 * pre-MIPS32/MIPS64 processors have CLO, CLZ.	The IDT RC64574 is 64-bit and
285 * has CLO and CLZ but not DCLO nor DCLZ.  For 64-bit kernels
286 * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
287 */
288#ifndef cpu_has_clo_clz
289#define cpu_has_clo_clz	cpu_has_mips_r
290#endif
291
292/*
293 * MIPS32 R2, MIPS64 R2, Loongson 3A and Octeon have WSBH.
294 * MIPS64 R2, Loongson 3A and Octeon have WSBH, DSBH and DSHD.
295 * This indicates the availability of WSBH and in case of 64 bit CPUs also
296 * DSBH and DSHD.
297 */
298#ifndef cpu_has_wsbh
299#define cpu_has_wsbh		cpu_has_mips_r2
300#endif
301
302#ifndef cpu_has_dsp
303#define cpu_has_dsp		(cpu_data[0].ases & MIPS_ASE_DSP)
304#endif
305
306#ifndef cpu_has_dsp2
307#define cpu_has_dsp2		(cpu_data[0].ases & MIPS_ASE_DSP2P)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
308#endif
309
310#ifndef cpu_has_mipsmt
311#define cpu_has_mipsmt		(cpu_data[0].ases & MIPS_ASE_MIPSMT)
 
 
 
 
312#endif
313
314#ifndef cpu_has_userlocal
315#define cpu_has_userlocal	(cpu_data[0].options & MIPS_CPU_ULRI)
316#endif
317
318#ifdef CONFIG_32BIT
319# ifndef cpu_has_nofpuex
320# define cpu_has_nofpuex	(cpu_data[0].options & MIPS_CPU_NOFPUEX)
321# endif
322# ifndef cpu_has_64bits
323# define cpu_has_64bits		(cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
324# endif
325# ifndef cpu_has_64bit_zero_reg
326# define cpu_has_64bit_zero_reg	(cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
327# endif
328# ifndef cpu_has_64bit_gp_regs
329# define cpu_has_64bit_gp_regs		0
330# endif
331# ifndef cpu_has_64bit_addresses
332# define cpu_has_64bit_addresses	0
333# endif
334# ifndef cpu_vmbits
335# define cpu_vmbits 31
336# endif
337#endif
338
339#ifdef CONFIG_64BIT
340# ifndef cpu_has_nofpuex
341# define cpu_has_nofpuex		0
342# endif
343# ifndef cpu_has_64bits
344# define cpu_has_64bits			1
345# endif
346# ifndef cpu_has_64bit_zero_reg
347# define cpu_has_64bit_zero_reg		1
348# endif
349# ifndef cpu_has_64bit_gp_regs
350# define cpu_has_64bit_gp_regs		1
351# endif
352# ifndef cpu_has_64bit_addresses
353# define cpu_has_64bit_addresses	1
354# endif
355# ifndef cpu_vmbits
356# define cpu_vmbits cpu_data[0].vmbits
357# define __NEED_VMBITS_PROBE
358# endif
359#endif
360
361#if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
362# define cpu_has_vint		(cpu_data[0].options & MIPS_CPU_VINT)
363#elif !defined(cpu_has_vint)
364# define cpu_has_vint			0
365#endif
366
367#if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
368# define cpu_has_veic		(cpu_data[0].options & MIPS_CPU_VEIC)
369#elif !defined(cpu_has_veic)
370# define cpu_has_veic			0
371#endif
372
373#ifndef cpu_has_inclusive_pcaches
374#define cpu_has_inclusive_pcaches	(cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES)
375#endif
376
377#ifndef cpu_dcache_line_size
378#define cpu_dcache_line_size()	cpu_data[0].dcache.linesz
379#endif
380#ifndef cpu_icache_line_size
381#define cpu_icache_line_size()	cpu_data[0].icache.linesz
382#endif
383#ifndef cpu_scache_line_size
384#define cpu_scache_line_size()	cpu_data[0].scache.linesz
385#endif
 
 
 
386
387#ifndef cpu_hwrena_impl_bits
388#define cpu_hwrena_impl_bits		0
389#endif
390
391#ifndef cpu_has_perf_cntr_intr_bit
392#define cpu_has_perf_cntr_intr_bit	(cpu_data[0].options & MIPS_CPU_PCI)
393#endif
394
395#ifndef cpu_has_vz
396#define cpu_has_vz		(cpu_data[0].ases & MIPS_ASE_VZ)
397#endif
398
399#if defined(CONFIG_CPU_HAS_MSA) && !defined(cpu_has_msa)
400# define cpu_has_msa		(cpu_data[0].ases & MIPS_ASE_MSA)
401#elif !defined(cpu_has_msa)
402# define cpu_has_msa		0
403#endif
404
 
 
 
 
405#ifndef cpu_has_fre
406# define cpu_has_fre		(cpu_data[0].options & MIPS_CPU_FRE)
407#endif
408
409#ifndef cpu_has_cdmm
410# define cpu_has_cdmm		(cpu_data[0].options & MIPS_CPU_CDMM)
411#endif
412
413#ifndef cpu_has_small_pages
414# define cpu_has_small_pages	(cpu_data[0].options & MIPS_CPU_SP)
415#endif
416
417#ifndef cpu_has_nan_legacy
418#define cpu_has_nan_legacy	(cpu_data[0].options & MIPS_CPU_NAN_LEGACY)
419#endif
420#ifndef cpu_has_nan_2008
421#define cpu_has_nan_2008	(cpu_data[0].options & MIPS_CPU_NAN_2008)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
422#endif
423
424#endif /* __ASM_CPU_FEATURES_H */
v6.8
  1/*
  2 * This file is subject to the terms and conditions of the GNU General Public
  3 * License.  See the file "COPYING" in the main directory of this archive
  4 * for more details.
  5 *
  6 * Copyright (C) 2003, 2004 Ralf Baechle
  7 * Copyright (C) 2004  Maciej W. Rozycki
  8 */
  9#ifndef __ASM_CPU_FEATURES_H
 10#define __ASM_CPU_FEATURES_H
 11
 12#include <asm/cpu.h>
 13#include <asm/cpu-info.h>
 14#include <asm/isa-rev.h>
 15#include <cpu-feature-overrides.h>
 16
 17#define __ase(ase)			(cpu_data[0].ases & (ase))
 18#define __isa(isa)			(cpu_data[0].isa_level & (isa))
 19#define __opt(opt)			(cpu_data[0].options & (opt))
 20
 21/*
 22 * Check if MIPS_ISA_REV is >= isa *and* an option or ASE is detected during
 23 * boot (typically by cpu_probe()).
 24 *
 25 * Note that these should only be used in cases where a kernel built for an
 26 * older ISA *cannot* run on a CPU which supports the feature in question. For
 27 * example this may be used for features introduced with MIPSr6, since a kernel
 28 * built for an older ISA cannot run on a MIPSr6 CPU. This should not be used
 29 * for MIPSr2 features however, since a MIPSr1 or earlier kernel might run on a
 30 * MIPSr2 CPU.
 31 */
 32#define __isa_ge_and_ase(isa, ase)	((MIPS_ISA_REV >= (isa)) && __ase(ase))
 33#define __isa_ge_and_opt(isa, opt)	((MIPS_ISA_REV >= (isa)) && __opt(opt))
 34
 35/*
 36 * Check if MIPS_ISA_REV is >= isa *or* an option or ASE is detected during
 37 * boot (typically by cpu_probe()).
 38 *
 39 * These are for use with features that are optional up until a particular ISA
 40 * revision & then become required.
 41 */
 42#define __isa_ge_or_ase(isa, ase)	((MIPS_ISA_REV >= (isa)) || __ase(ase))
 43#define __isa_ge_or_opt(isa, opt)	((MIPS_ISA_REV >= (isa)) || __opt(opt))
 44
 45/*
 46 * Check if MIPS_ISA_REV is < isa *and* an option or ASE is detected during
 47 * boot (typically by cpu_probe()).
 48 *
 49 * These are for use with features that are optional up until a particular ISA
 50 * revision & are then removed - ie. no longer present in any CPU implementing
 51 * the given ISA revision.
 52 */
 53#define __isa_lt_and_ase(isa, ase)	((MIPS_ISA_REV < (isa)) && __ase(ase))
 54#define __isa_lt_and_opt(isa, opt)	((MIPS_ISA_REV < (isa)) && __opt(opt))
 55
 56/*
 57 * Similarly allow for ISA level checks that take into account knowledge of the
 58 * ISA targeted by the kernel build, provided by MIPS_ISA_REV.
 59 */
 60#define __isa_ge_and_flag(isa, flag)	((MIPS_ISA_REV >= (isa)) && __isa(flag))
 61#define __isa_ge_or_flag(isa, flag)	((MIPS_ISA_REV >= (isa)) || __isa(flag))
 62#define __isa_lt_and_flag(isa, flag)	((MIPS_ISA_REV < (isa)) && __isa(flag))
 63#define __isa_range(ge, lt) \
 64	((MIPS_ISA_REV >= (ge)) && (MIPS_ISA_REV < (lt)))
 65#define __isa_range_or_flag(ge, lt, flag) \
 66	(__isa_range(ge, lt) || ((MIPS_ISA_REV < (lt)) && __isa(flag)))
 67#define __isa_range_and_ase(ge, lt, ase) \
 68	(__isa_range(ge, lt) && __ase(ase))
 69
 70/*
 71 * SMP assumption: Options of CPU 0 are a superset of all processors.
 72 * This is true for all known MIPS systems.
 73 */
 74#ifndef cpu_has_tlb
 75#define cpu_has_tlb		__opt(MIPS_CPU_TLB)
 76#endif
 77#ifndef cpu_has_ftlb
 78#define cpu_has_ftlb		__opt(MIPS_CPU_FTLB)
 79#endif
 80#ifndef cpu_has_tlbinv
 81#define cpu_has_tlbinv		__opt(MIPS_CPU_TLBINV)
 82#endif
 83#ifndef cpu_has_segments
 84#define cpu_has_segments	__opt(MIPS_CPU_SEGMENTS)
 85#endif
 86#ifndef cpu_has_eva
 87#define cpu_has_eva		__opt(MIPS_CPU_EVA)
 88#endif
 89#ifndef cpu_has_htw
 90#define cpu_has_htw		__opt(MIPS_CPU_HTW)
 91#endif
 92#ifndef cpu_has_ldpte
 93#define cpu_has_ldpte		__opt(MIPS_CPU_LDPTE)
 94#endif
 95#ifndef cpu_has_rixiex
 96#define cpu_has_rixiex		__isa_ge_or_opt(6, MIPS_CPU_RIXIEX)
 97#endif
 98#ifndef cpu_has_maar
 99#define cpu_has_maar		__opt(MIPS_CPU_MAAR)
100#endif
101#ifndef cpu_has_rw_llb
102#define cpu_has_rw_llb		__isa_ge_or_opt(6, MIPS_CPU_RW_LLB)
103#endif
104
105/*
106 * For the moment we don't consider R6000 and R8000 so we can assume that
107 * anything that doesn't support R4000-style exceptions and interrupts is
108 * R3000-like.  Users should still treat these two macro definitions as
109 * opaque.
110 */
111#ifndef cpu_has_3kex
112#define cpu_has_3kex		(!cpu_has_4kex)
113#endif
114#ifndef cpu_has_4kex
115#define cpu_has_4kex		__isa_ge_or_opt(1, MIPS_CPU_4KEX)
116#endif
117#ifndef cpu_has_3k_cache
118#define cpu_has_3k_cache	__isa_lt_and_opt(1, MIPS_CPU_3K_CACHE)
119#endif
 
 
120#ifndef cpu_has_4k_cache
121#define cpu_has_4k_cache	__opt(MIPS_CPU_4K_CACHE)
 
 
 
122#endif
123#ifndef cpu_has_octeon_cache
124#define cpu_has_octeon_cache						\
125({									\
126	int __res;							\
127									\
128	switch (boot_cpu_type()) {					\
129	case CPU_CAVIUM_OCTEON:						\
130	case CPU_CAVIUM_OCTEON_PLUS:					\
131	case CPU_CAVIUM_OCTEON2:					\
132	case CPU_CAVIUM_OCTEON3:					\
133		__res = 1;						\
134		break;							\
135									\
136	default:							\
137		__res = 0;						\
138	}								\
139									\
140	__res;								\
141})
142#endif
143/* Don't override `cpu_has_fpu' to 1 or the "nofpu" option won't work.  */
144#ifndef cpu_has_fpu
145# ifdef CONFIG_MIPS_FP_SUPPORT
146#  define cpu_has_fpu		(current_cpu_data.options & MIPS_CPU_FPU)
147#  define raw_cpu_has_fpu	(raw_current_cpu_data.options & MIPS_CPU_FPU)
148# else
149#  define cpu_has_fpu		0
150#  define raw_cpu_has_fpu	0
151# endif
152#else
153# if cpu_has_fpu
154#  error "Forcing `cpu_has_fpu' to non-zero is not supported"
155# endif
156# define raw_cpu_has_fpu	cpu_has_fpu
157#endif
158#ifndef cpu_has_32fpr
159#define cpu_has_32fpr		__isa_ge_or_opt(1, MIPS_CPU_32FPR)
160#endif
161#ifndef cpu_has_counter
162#define cpu_has_counter		__opt(MIPS_CPU_COUNTER)
163#endif
164#ifndef cpu_has_watch
165#define cpu_has_watch		__opt(MIPS_CPU_WATCH)
166#endif
167#ifndef cpu_has_divec
168#define cpu_has_divec		__isa_ge_or_opt(1, MIPS_CPU_DIVEC)
169#endif
170#ifndef cpu_has_vce
171#define cpu_has_vce		__opt(MIPS_CPU_VCE)
172#endif
173#ifndef cpu_has_cache_cdex_p
174#define cpu_has_cache_cdex_p	__opt(MIPS_CPU_CACHE_CDEX_P)
175#endif
176#ifndef cpu_has_cache_cdex_s
177#define cpu_has_cache_cdex_s	__opt(MIPS_CPU_CACHE_CDEX_S)
178#endif
179#ifndef cpu_has_prefetch
180#define cpu_has_prefetch	__isa_ge_or_opt(1, MIPS_CPU_PREFETCH)
181#endif
182#ifndef cpu_has_mcheck
183#define cpu_has_mcheck		__isa_ge_or_opt(1, MIPS_CPU_MCHECK)
184#endif
185#ifndef cpu_has_ejtag
186#define cpu_has_ejtag		__opt(MIPS_CPU_EJTAG)
187#endif
188#ifndef cpu_has_llsc
189#define cpu_has_llsc		__isa_ge_or_opt(1, MIPS_CPU_LLSC)
 
 
 
190#endif
191#ifndef kernel_uses_llsc
192#define kernel_uses_llsc	cpu_has_llsc
193#endif
194#ifndef cpu_has_guestctl0ext
195#define cpu_has_guestctl0ext	__opt(MIPS_CPU_GUESTCTL0EXT)
196#endif
197#ifndef cpu_has_guestctl1
198#define cpu_has_guestctl1	__opt(MIPS_CPU_GUESTCTL1)
199#endif
200#ifndef cpu_has_guestctl2
201#define cpu_has_guestctl2	__opt(MIPS_CPU_GUESTCTL2)
202#endif
203#ifndef cpu_has_guestid
204#define cpu_has_guestid		__opt(MIPS_CPU_GUESTID)
205#endif
206#ifndef cpu_has_drg
207#define cpu_has_drg		__opt(MIPS_CPU_DRG)
208#endif
209#ifndef cpu_has_mips16
210#define cpu_has_mips16		__isa_lt_and_ase(6, MIPS_ASE_MIPS16)
211#endif
212#ifndef cpu_has_mips16e2
213#define cpu_has_mips16e2	__isa_lt_and_ase(6, MIPS_ASE_MIPS16E2)
214#endif
215#ifndef cpu_has_mdmx
216#define cpu_has_mdmx		__isa_lt_and_ase(6, MIPS_ASE_MDMX)
217#endif
218#ifndef cpu_has_mips3d
219#define cpu_has_mips3d		__isa_lt_and_ase(6, MIPS_ASE_MIPS3D)
220#endif
221#ifndef cpu_has_smartmips
222#define cpu_has_smartmips	__isa_lt_and_ase(6, MIPS_ASE_SMARTMIPS)
223#endif
224
225#ifndef cpu_has_rixi
226#define cpu_has_rixi		__isa_ge_or_opt(6, MIPS_CPU_RIXI)
227#endif
228
229#ifndef cpu_has_mmips
230# if defined(__mips_micromips)
231#  define cpu_has_mmips		1
232# elif defined(CONFIG_SYS_SUPPORTS_MICROMIPS)
233#  define cpu_has_mmips		__opt(MIPS_CPU_MICROMIPS)
234# else
235#  define cpu_has_mmips		0
236# endif
237#endif
238
239#ifndef cpu_has_lpa
240#define cpu_has_lpa		__opt(MIPS_CPU_LPA)
241#endif
242#ifndef cpu_has_mvh
243#define cpu_has_mvh		__opt(MIPS_CPU_MVH)
244#endif
245#ifndef cpu_has_xpa
246#define cpu_has_xpa		(cpu_has_lpa && cpu_has_mvh)
247#endif
248#ifndef cpu_has_vtag_icache
249#define cpu_has_vtag_icache	(cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
250#endif
251#ifndef cpu_has_dc_aliases
252#define cpu_has_dc_aliases	(cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
253#endif
254#ifndef cpu_has_ic_fills_f_dc
255#define cpu_has_ic_fills_f_dc	(cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
256#endif
257#ifndef cpu_has_pindexed_dcache
258#define cpu_has_pindexed_dcache	(cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
259#endif
 
 
 
260
261/*
262 * I-Cache snoops remote store.	 This only matters on SMP.  Some multiprocessors
263 * such as the R10000 have I-Caches that snoop local stores; the embedded ones
264 * don't.  For maintaining I-cache coherency this means we need to flush the
265 * D-cache all the way back to whever the I-cache does refills from, so the
266 * I-cache has a chance to see the new data at all.  Then we have to flush the
267 * I-cache also.
268 * Note we may have been rescheduled and may no longer be running on the CPU
269 * that did the store so we can't optimize this into only doing the flush on
270 * the local CPU.
271 */
272#ifndef cpu_icache_snoops_remote_store
273#ifdef CONFIG_SMP
274#define cpu_icache_snoops_remote_store	(cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
275#else
276#define cpu_icache_snoops_remote_store	1
277#endif
278#endif
279
280#ifndef cpu_has_mips_1
281# define cpu_has_mips_1		(MIPS_ISA_REV < 6)
282#endif
283#ifndef cpu_has_mips_2
284# define cpu_has_mips_2		__isa_lt_and_flag(6, MIPS_CPU_ISA_II)
285#endif
286#ifndef cpu_has_mips_3
287# define cpu_has_mips_3		__isa_lt_and_flag(6, MIPS_CPU_ISA_III)
288#endif
289#ifndef cpu_has_mips_4
290# define cpu_has_mips_4		__isa_lt_and_flag(6, MIPS_CPU_ISA_IV)
291#endif
292#ifndef cpu_has_mips_5
293# define cpu_has_mips_5		__isa_lt_and_flag(6, MIPS_CPU_ISA_V)
294#endif
295#ifndef cpu_has_mips32r1
296# define cpu_has_mips32r1	__isa_range_or_flag(1, 6, MIPS_CPU_ISA_M32R1)
297#endif
298#ifndef cpu_has_mips32r2
299# define cpu_has_mips32r2	__isa_range_or_flag(2, 6, MIPS_CPU_ISA_M32R2)
300#endif
301#ifndef cpu_has_mips32r5
302# define cpu_has_mips32r5	__isa_range_or_flag(5, 6, MIPS_CPU_ISA_M32R5)
303#endif
304#ifndef cpu_has_mips32r6
305# define cpu_has_mips32r6	__isa_ge_or_flag(6, MIPS_CPU_ISA_M32R6)
306#endif
307#ifndef cpu_has_mips64r1
308# define cpu_has_mips64r1	(cpu_has_64bits && \
309				 __isa_range_or_flag(1, 6, MIPS_CPU_ISA_M64R1))
310#endif
311#ifndef cpu_has_mips64r2
312# define cpu_has_mips64r2	(cpu_has_64bits && \
313				 __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M64R2))
314#endif
315#ifndef cpu_has_mips64r5
316# define cpu_has_mips64r5	(cpu_has_64bits && \
317				 __isa_range_or_flag(5, 6, MIPS_CPU_ISA_M64R5))
318#endif
319#ifndef cpu_has_mips64r6
320# define cpu_has_mips64r6	__isa_ge_and_flag(6, MIPS_CPU_ISA_M64R6)
321#endif
322
323/*
324 * Shortcuts ...
325 */
326#define cpu_has_mips_2_3_4_5	(cpu_has_mips_2 | cpu_has_mips_3_4_5)
327#define cpu_has_mips_3_4_5	(cpu_has_mips_3 | cpu_has_mips_4_5)
328#define cpu_has_mips_4_5	(cpu_has_mips_4 | cpu_has_mips_5)
329
330#define cpu_has_mips_2_3_4_5_r	(cpu_has_mips_2 | cpu_has_mips_3_4_5_r)
331#define cpu_has_mips_3_4_5_r	(cpu_has_mips_3 | cpu_has_mips_4_5_r)
332#define cpu_has_mips_4_5_r	(cpu_has_mips_4 | cpu_has_mips_5_r)
333#define cpu_has_mips_5_r	(cpu_has_mips_5 | cpu_has_mips_r)
334
335#define cpu_has_mips_3_4_5_64_r2_r6					\
336				(cpu_has_mips_3 | cpu_has_mips_4_5_64_r2_r6)
337#define cpu_has_mips_4_5_64_r2_r6					\
338				(cpu_has_mips_4_5 | cpu_has_mips64r1 |	\
339				 cpu_has_mips_r2 | cpu_has_mips_r5 | \
340				 cpu_has_mips_r6)
341
342#define cpu_has_mips32	(cpu_has_mips32r1 | cpu_has_mips32r2 | \
343			 cpu_has_mips32r5 | cpu_has_mips32r6)
344#define cpu_has_mips64	(cpu_has_mips64r1 | cpu_has_mips64r2 | \
345			 cpu_has_mips64r5 | cpu_has_mips64r6)
346#define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
347#define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
348#define cpu_has_mips_r5	(cpu_has_mips32r5 | cpu_has_mips64r5)
349#define cpu_has_mips_r6	(cpu_has_mips32r6 | cpu_has_mips64r6)
350#define cpu_has_mips_r	(cpu_has_mips32r1 | cpu_has_mips32r2 | \
351			 cpu_has_mips32r5 | cpu_has_mips32r6 | \
352			 cpu_has_mips64r1 | cpu_has_mips64r2 | \
353			 cpu_has_mips64r5 | cpu_has_mips64r6)
354
355/* MIPSR2 - MIPSR6 have a lot of similarities */
356#define cpu_has_mips_r2_r6	(cpu_has_mips_r2 | cpu_has_mips_r5 | \
357				 cpu_has_mips_r6)
358
359/*
360 * cpu_has_mips_r2_exec_hazard - return if IHB is required on current processor
361 *
362 * Returns non-zero value if the current processor implementation requires
363 * an IHB instruction to deal with an instruction hazard as per MIPS R2
364 * architecture specification, zero otherwise.
365 */
366#ifndef cpu_has_mips_r2_exec_hazard
367#define cpu_has_mips_r2_exec_hazard					\
368({									\
369	int __res;							\
370									\
371	switch (boot_cpu_type()) {					\
372	case CPU_M14KC:							\
373	case CPU_74K:							\
374	case CPU_1074K:							\
375	case CPU_PROAPTIV:						\
376	case CPU_P5600:							\
377	case CPU_M5150:							\
378	case CPU_QEMU_GENERIC:						\
379	case CPU_CAVIUM_OCTEON:						\
380	case CPU_CAVIUM_OCTEON_PLUS:					\
381	case CPU_CAVIUM_OCTEON2:					\
382	case CPU_CAVIUM_OCTEON3:					\
383		__res = 0;						\
384		break;							\
385									\
386	default:							\
387		__res = 1;						\
388	}								\
389									\
390	__res;								\
391})
392#endif
393
394/*
395 * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
396 * pre-MIPS32/MIPS64 processors have CLO, CLZ.	The IDT RC64574 is 64-bit and
397 * has CLO and CLZ but not DCLO nor DCLZ.  For 64-bit kernels
398 * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
399 */
400#ifndef cpu_has_clo_clz
401#define cpu_has_clo_clz	cpu_has_mips_r
402#endif
403
404/*
405 * MIPS32 R2, MIPS64 R2, Loongson 3A and Octeon have WSBH.
406 * MIPS64 R2, Loongson 3A and Octeon have WSBH, DSBH and DSHD.
407 * This indicates the availability of WSBH and in case of 64 bit CPUs also
408 * DSBH and DSHD.
409 */
410#ifndef cpu_has_wsbh
411#define cpu_has_wsbh		cpu_has_mips_r2
412#endif
413
414#ifndef cpu_has_dsp
415#define cpu_has_dsp		__ase(MIPS_ASE_DSP)
416#endif
417
418#ifndef cpu_has_dsp2
419#define cpu_has_dsp2		__ase(MIPS_ASE_DSP2P)
420#endif
421
422#ifndef cpu_has_dsp3
423#define cpu_has_dsp3		__ase(MIPS_ASE_DSP3)
424#endif
425
426#ifndef cpu_has_loongson_mmi
427#define cpu_has_loongson_mmi		__ase(MIPS_ASE_LOONGSON_MMI)
428#endif
429
430#ifndef cpu_has_loongson_cam
431#define cpu_has_loongson_cam		__ase(MIPS_ASE_LOONGSON_CAM)
432#endif
433
434#ifndef cpu_has_loongson_ext
435#define cpu_has_loongson_ext		__ase(MIPS_ASE_LOONGSON_EXT)
436#endif
437
438#ifndef cpu_has_loongson_ext2
439#define cpu_has_loongson_ext2		__ase(MIPS_ASE_LOONGSON_EXT2)
440#endif
441
442#ifndef cpu_has_mipsmt
443#define cpu_has_mipsmt		__isa_range_and_ase(2, 6, MIPS_ASE_MIPSMT)
444#endif
445
446#ifndef cpu_has_vp
447#define cpu_has_vp		__isa_ge_and_opt(6, MIPS_CPU_VP)
448#endif
449
450#ifndef cpu_has_userlocal
451#define cpu_has_userlocal	__isa_ge_or_opt(6, MIPS_CPU_ULRI)
452#endif
453
454#ifdef CONFIG_32BIT
455# ifndef cpu_has_nofpuex
456# define cpu_has_nofpuex	__isa_lt_and_opt(1, MIPS_CPU_NOFPUEX)
457# endif
458# ifndef cpu_has_64bits
459# define cpu_has_64bits		(cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
460# endif
461# ifndef cpu_has_64bit_zero_reg
462# define cpu_has_64bit_zero_reg	(cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
463# endif
464# ifndef cpu_has_64bit_gp_regs
465# define cpu_has_64bit_gp_regs		0
466# endif
 
 
 
467# ifndef cpu_vmbits
468# define cpu_vmbits 31
469# endif
470#endif
471
472#ifdef CONFIG_64BIT
473# ifndef cpu_has_nofpuex
474# define cpu_has_nofpuex		0
475# endif
476# ifndef cpu_has_64bits
477# define cpu_has_64bits			1
478# endif
479# ifndef cpu_has_64bit_zero_reg
480# define cpu_has_64bit_zero_reg		1
481# endif
482# ifndef cpu_has_64bit_gp_regs
483# define cpu_has_64bit_gp_regs		1
484# endif
 
 
 
485# ifndef cpu_vmbits
486# define cpu_vmbits cpu_data[0].vmbits
487# define __NEED_VMBITS_PROBE
488# endif
489#endif
490
491#if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
492# define cpu_has_vint		__opt(MIPS_CPU_VINT)
493#elif !defined(cpu_has_vint)
494# define cpu_has_vint			0
495#endif
496
497#if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
498# define cpu_has_veic		__opt(MIPS_CPU_VEIC)
499#elif !defined(cpu_has_veic)
500# define cpu_has_veic			0
501#endif
502
503#ifndef cpu_has_inclusive_pcaches
504#define cpu_has_inclusive_pcaches	__opt(MIPS_CPU_INCLUSIVE_CACHES)
505#endif
506
507#ifndef cpu_dcache_line_size
508#define cpu_dcache_line_size()	cpu_data[0].dcache.linesz
509#endif
510#ifndef cpu_icache_line_size
511#define cpu_icache_line_size()	cpu_data[0].icache.linesz
512#endif
513#ifndef cpu_scache_line_size
514#define cpu_scache_line_size()	cpu_data[0].scache.linesz
515#endif
516#ifndef cpu_tcache_line_size
517#define cpu_tcache_line_size()	cpu_data[0].tcache.linesz
518#endif
519
520#ifndef cpu_hwrena_impl_bits
521#define cpu_hwrena_impl_bits		0
522#endif
523
524#ifndef cpu_has_perf_cntr_intr_bit
525#define cpu_has_perf_cntr_intr_bit	__opt(MIPS_CPU_PCI)
526#endif
527
528#ifndef cpu_has_vz
529#define cpu_has_vz		__ase(MIPS_ASE_VZ)
530#endif
531
532#if defined(CONFIG_CPU_HAS_MSA) && !defined(cpu_has_msa)
533# define cpu_has_msa		__ase(MIPS_ASE_MSA)
534#elif !defined(cpu_has_msa)
535# define cpu_has_msa		0
536#endif
537
538#ifndef cpu_has_ufr
539# define cpu_has_ufr		__opt(MIPS_CPU_UFR)
540#endif
541
542#ifndef cpu_has_fre
543# define cpu_has_fre		__opt(MIPS_CPU_FRE)
544#endif
545
546#ifndef cpu_has_cdmm
547# define cpu_has_cdmm		__opt(MIPS_CPU_CDMM)
548#endif
549
550#ifndef cpu_has_small_pages
551# define cpu_has_small_pages	__opt(MIPS_CPU_SP)
552#endif
553
554#ifndef cpu_has_nan_legacy
555#define cpu_has_nan_legacy	__isa_lt_and_opt(6, MIPS_CPU_NAN_LEGACY)
556#endif
557#ifndef cpu_has_nan_2008
558#define cpu_has_nan_2008	__isa_ge_or_opt(6, MIPS_CPU_NAN_2008)
559#endif
560
561#ifndef cpu_has_ebase_wg
562# define cpu_has_ebase_wg	__opt(MIPS_CPU_EBASE_WG)
563#endif
564
565#ifndef cpu_has_badinstr
566# define cpu_has_badinstr	__isa_ge_or_opt(6, MIPS_CPU_BADINSTR)
567#endif
568
569#ifndef cpu_has_badinstrp
570# define cpu_has_badinstrp	__isa_ge_or_opt(6, MIPS_CPU_BADINSTRP)
571#endif
572
573#ifndef cpu_has_contextconfig
574# define cpu_has_contextconfig	__opt(MIPS_CPU_CTXTC)
575#endif
576
577#ifndef cpu_has_perf
578# define cpu_has_perf		__opt(MIPS_CPU_PERF)
579#endif
580
581#ifndef cpu_has_mac2008_only
582# define cpu_has_mac2008_only	__opt(MIPS_CPU_MAC_2008_ONLY)
583#endif
584
585#ifndef cpu_has_ftlbparex
586# define cpu_has_ftlbparex	__opt(MIPS_CPU_FTLBPAREX)
587#endif
588
589#ifndef cpu_has_gsexcex
590# define cpu_has_gsexcex	__opt(MIPS_CPU_GSEXCEX)
591#endif
592
593#ifdef CONFIG_SMP
594/*
595 * Some systems share FTLB RAMs between threads within a core (siblings in
596 * kernel parlance). This means that FTLB entries may become invalid at almost
597 * any point when an entry is evicted due to a sibling thread writing an entry
598 * to the shared FTLB RAM.
599 *
600 * This is only relevant to SMP systems, and the only systems that exhibit this
601 * property implement MIPSr6 or higher so we constrain support for this to
602 * kernels that will run on such systems.
603 */
604# ifndef cpu_has_shared_ftlb_ram
605#  define cpu_has_shared_ftlb_ram \
606	__isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_RAM)
607# endif
608
609/*
610 * Some systems take this a step further & share FTLB entries between siblings.
611 * This is implemented as TLB writes happening as usual, but if an entry
612 * written by a sibling exists in the shared FTLB for a translation which would
613 * otherwise cause a TLB refill exception then the CPU will use the entry
614 * written by its sibling rather than triggering a refill & writing a matching
615 * TLB entry for itself.
616 *
617 * This is naturally only valid if a TLB entry is known to be suitable for use
618 * on all siblings in a CPU, and so it only takes effect when MMIDs are in use
619 * rather than ASIDs or when a TLB entry is marked global.
620 */
621# ifndef cpu_has_shared_ftlb_entries
622#  define cpu_has_shared_ftlb_entries \
623	__isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_ENTRIES)
624# endif
625#endif /* SMP */
626
627#ifndef cpu_has_shared_ftlb_ram
628# define cpu_has_shared_ftlb_ram 0
629#endif
630#ifndef cpu_has_shared_ftlb_entries
631# define cpu_has_shared_ftlb_entries 0
632#endif
633
634#ifdef CONFIG_MIPS_MT_SMP
635# define cpu_has_mipsmt_pertccounters \
636	__isa_lt_and_opt(6, MIPS_CPU_MT_PER_TC_PERF_COUNTERS)
637#else
638# define cpu_has_mipsmt_pertccounters 0
639#endif /* CONFIG_MIPS_MT_SMP */
640
641/*
642 * We only enable MMID support for configurations which natively support 64 bit
643 * atomics because getting good performance from the allocator relies upon
644 * efficient atomic64_*() functions.
645 */
646#ifndef cpu_has_mmid
647# ifdef CONFIG_GENERIC_ATOMIC64
648#  define cpu_has_mmid		0
649# else
650#  define cpu_has_mmid		__isa_ge_and_opt(6, MIPS_CPU_MMID)
651# endif
652#endif
653
654#ifndef cpu_has_mm_sysad
655# define cpu_has_mm_sysad	__opt(MIPS_CPU_MM_SYSAD)
656#endif
657
658#ifndef cpu_has_mm_full
659# define cpu_has_mm_full	__opt(MIPS_CPU_MM_FULL)
660#endif
661
662/*
663 * Guest capabilities
664 */
665#ifndef cpu_guest_has_conf1
666#define cpu_guest_has_conf1	(cpu_data[0].guest.conf & (1 << 1))
667#endif
668#ifndef cpu_guest_has_conf2
669#define cpu_guest_has_conf2	(cpu_data[0].guest.conf & (1 << 2))
670#endif
671#ifndef cpu_guest_has_conf3
672#define cpu_guest_has_conf3	(cpu_data[0].guest.conf & (1 << 3))
673#endif
674#ifndef cpu_guest_has_conf4
675#define cpu_guest_has_conf4	(cpu_data[0].guest.conf & (1 << 4))
676#endif
677#ifndef cpu_guest_has_conf5
678#define cpu_guest_has_conf5	(cpu_data[0].guest.conf & (1 << 5))
679#endif
680#ifndef cpu_guest_has_conf6
681#define cpu_guest_has_conf6	(cpu_data[0].guest.conf & (1 << 6))
682#endif
683#ifndef cpu_guest_has_conf7
684#define cpu_guest_has_conf7	(cpu_data[0].guest.conf & (1 << 7))
685#endif
686#ifndef cpu_guest_has_fpu
687#define cpu_guest_has_fpu	(cpu_data[0].guest.options & MIPS_CPU_FPU)
688#endif
689#ifndef cpu_guest_has_watch
690#define cpu_guest_has_watch	(cpu_data[0].guest.options & MIPS_CPU_WATCH)
691#endif
692#ifndef cpu_guest_has_contextconfig
693#define cpu_guest_has_contextconfig (cpu_data[0].guest.options & MIPS_CPU_CTXTC)
694#endif
695#ifndef cpu_guest_has_segments
696#define cpu_guest_has_segments	(cpu_data[0].guest.options & MIPS_CPU_SEGMENTS)
697#endif
698#ifndef cpu_guest_has_badinstr
699#define cpu_guest_has_badinstr	(cpu_data[0].guest.options & MIPS_CPU_BADINSTR)
700#endif
701#ifndef cpu_guest_has_badinstrp
702#define cpu_guest_has_badinstrp	(cpu_data[0].guest.options & MIPS_CPU_BADINSTRP)
703#endif
704#ifndef cpu_guest_has_htw
705#define cpu_guest_has_htw	(cpu_data[0].guest.options & MIPS_CPU_HTW)
706#endif
707#ifndef cpu_guest_has_ldpte
708#define cpu_guest_has_ldpte	(cpu_data[0].guest.options & MIPS_CPU_LDPTE)
709#endif
710#ifndef cpu_guest_has_mvh
711#define cpu_guest_has_mvh	(cpu_data[0].guest.options & MIPS_CPU_MVH)
712#endif
713#ifndef cpu_guest_has_msa
714#define cpu_guest_has_msa	(cpu_data[0].guest.ases & MIPS_ASE_MSA)
715#endif
716#ifndef cpu_guest_has_kscr
717#define cpu_guest_has_kscr(n)	(cpu_data[0].guest.kscratch_mask & (1u << (n)))
718#endif
719#ifndef cpu_guest_has_rw_llb
720#define cpu_guest_has_rw_llb	(cpu_has_mips_r6 || (cpu_data[0].guest.options & MIPS_CPU_RW_LLB))
721#endif
722#ifndef cpu_guest_has_perf
723#define cpu_guest_has_perf	(cpu_data[0].guest.options & MIPS_CPU_PERF)
724#endif
725#ifndef cpu_guest_has_maar
726#define cpu_guest_has_maar	(cpu_data[0].guest.options & MIPS_CPU_MAAR)
727#endif
728#ifndef cpu_guest_has_userlocal
729#define cpu_guest_has_userlocal	(cpu_data[0].guest.options & MIPS_CPU_ULRI)
730#endif
731
732/*
733 * Guest dynamic capabilities
734 */
735#ifndef cpu_guest_has_dyn_fpu
736#define cpu_guest_has_dyn_fpu	(cpu_data[0].guest.options_dyn & MIPS_CPU_FPU)
737#endif
738#ifndef cpu_guest_has_dyn_watch
739#define cpu_guest_has_dyn_watch	(cpu_data[0].guest.options_dyn & MIPS_CPU_WATCH)
740#endif
741#ifndef cpu_guest_has_dyn_contextconfig
742#define cpu_guest_has_dyn_contextconfig (cpu_data[0].guest.options_dyn & MIPS_CPU_CTXTC)
743#endif
744#ifndef cpu_guest_has_dyn_perf
745#define cpu_guest_has_dyn_perf	(cpu_data[0].guest.options_dyn & MIPS_CPU_PERF)
746#endif
747#ifndef cpu_guest_has_dyn_msa
748#define cpu_guest_has_dyn_msa	(cpu_data[0].guest.ases_dyn & MIPS_ASE_MSA)
749#endif
750#ifndef cpu_guest_has_dyn_maar
751#define cpu_guest_has_dyn_maar	(cpu_data[0].guest.options_dyn & MIPS_CPU_MAAR)
752#endif
753
754#endif /* __ASM_CPU_FEATURES_H */