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freebsd-dev/sys/arm/include/cpufunc.h
Pedro F. Giffuni af3dc4a7ca sys/arm: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:04:10 +00:00

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/* $NetBSD: cpufunc.h,v 1.29 2003/09/06 09:08:35 rearnsha Exp $ */
/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1997 Mark Brinicombe.
* Copyright (c) 1997 Causality Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Causality Limited.
* 4. The name of Causality Limited may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY CAUSALITY LIMITED ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* RiscBSD kernel project
*
* cpufunc.h
*
* Prototypes for cpu, mmu and tlb related functions.
*
* $FreeBSD$
*/
#ifndef _MACHINE_CPUFUNC_H_
#define _MACHINE_CPUFUNC_H_
#ifdef _KERNEL
#include <sys/types.h>
#include <machine/armreg.h>
static __inline void
breakpoint(void)
{
__asm(".word 0xe7ffffff");
}
struct cpu_functions {
/* CPU functions */
#if __ARM_ARCH < 6
void (*cf_cpwait) (void);
/* MMU functions */
u_int (*cf_control) (u_int bic, u_int eor);
void (*cf_setttb) (u_int ttb);
/* TLB functions */
void (*cf_tlb_flushID) (void);
void (*cf_tlb_flushID_SE) (u_int va);
void (*cf_tlb_flushD) (void);
void (*cf_tlb_flushD_SE) (u_int va);
/*
* Cache operations:
*
* We define the following primitives:
*
* icache_sync_range Synchronize I-cache range
*
* dcache_wbinv_all Write-back and Invalidate D-cache
* dcache_wbinv_range Write-back and Invalidate D-cache range
* dcache_inv_range Invalidate D-cache range
* dcache_wb_range Write-back D-cache range
*
* idcache_wbinv_all Write-back and Invalidate D-cache,
* Invalidate I-cache
* idcache_wbinv_range Write-back and Invalidate D-cache,
* Invalidate I-cache range
*
* Note that the ARM term for "write-back" is "clean". We use
* the term "write-back" since it's a more common way to describe
* the operation.
*
* There are some rules that must be followed:
*
* ID-cache Invalidate All:
* Unlike other functions, this one must never write back.
* It is used to intialize the MMU when it is in an unknown
* state (such as when it may have lines tagged as valid
* that belong to a previous set of mappings).
*
* I-cache Sync range:
* The goal is to synchronize the instruction stream,
* so you may beed to write-back dirty D-cache blocks
* first. If a range is requested, and you can't
* synchronize just a range, you have to hit the whole
* thing.
*
* D-cache Write-Back and Invalidate range:
* If you can't WB-Inv a range, you must WB-Inv the
* entire D-cache.
*
* D-cache Invalidate:
* If you can't Inv the D-cache, you must Write-Back
* and Invalidate. Code that uses this operation
* MUST NOT assume that the D-cache will not be written
* back to memory.
*
* D-cache Write-Back:
* If you can't Write-back without doing an Inv,
* that's fine. Then treat this as a WB-Inv.
* Skipping the invalidate is merely an optimization.
*
* All operations:
* Valid virtual addresses must be passed to each
* cache operation.
*/
void (*cf_icache_sync_range) (vm_offset_t, vm_size_t);
void (*cf_dcache_wbinv_all) (void);
void (*cf_dcache_wbinv_range) (vm_offset_t, vm_size_t);
void (*cf_dcache_inv_range) (vm_offset_t, vm_size_t);
void (*cf_dcache_wb_range) (vm_offset_t, vm_size_t);
void (*cf_idcache_inv_all) (void);
void (*cf_idcache_wbinv_all) (void);
void (*cf_idcache_wbinv_range) (vm_offset_t, vm_size_t);
#endif
void (*cf_l2cache_wbinv_all) (void);
void (*cf_l2cache_wbinv_range) (vm_offset_t, vm_size_t);
void (*cf_l2cache_inv_range) (vm_offset_t, vm_size_t);
void (*cf_l2cache_wb_range) (vm_offset_t, vm_size_t);
void (*cf_l2cache_drain_writebuf) (void);
/* Other functions */
#if __ARM_ARCH < 6
void (*cf_drain_writebuf) (void);
#endif
void (*cf_sleep) (int mode);
#if __ARM_ARCH < 6
/* Soft functions */
void (*cf_context_switch) (void);
#endif
void (*cf_setup) (void);
};
extern struct cpu_functions cpufuncs;
extern u_int cputype;
#if __ARM_ARCH < 6
#define cpu_cpwait() cpufuncs.cf_cpwait()
#define cpu_control(c, e) cpufuncs.cf_control(c, e)
#define cpu_setttb(t) cpufuncs.cf_setttb(t)
#define cpu_tlb_flushID() cpufuncs.cf_tlb_flushID()
#define cpu_tlb_flushID_SE(e) cpufuncs.cf_tlb_flushID_SE(e)
#define cpu_tlb_flushD() cpufuncs.cf_tlb_flushD()
#define cpu_tlb_flushD_SE(e) cpufuncs.cf_tlb_flushD_SE(e)
#define cpu_icache_sync_range(a, s) cpufuncs.cf_icache_sync_range((a), (s))
#define cpu_dcache_wbinv_all() cpufuncs.cf_dcache_wbinv_all()
#define cpu_dcache_wbinv_range(a, s) cpufuncs.cf_dcache_wbinv_range((a), (s))
#define cpu_dcache_inv_range(a, s) cpufuncs.cf_dcache_inv_range((a), (s))
#define cpu_dcache_wb_range(a, s) cpufuncs.cf_dcache_wb_range((a), (s))
#define cpu_idcache_inv_all() cpufuncs.cf_idcache_inv_all()
#define cpu_idcache_wbinv_all() cpufuncs.cf_idcache_wbinv_all()
#define cpu_idcache_wbinv_range(a, s) cpufuncs.cf_idcache_wbinv_range((a), (s))
#endif
#define cpu_l2cache_wbinv_all() cpufuncs.cf_l2cache_wbinv_all()
#define cpu_l2cache_wb_range(a, s) cpufuncs.cf_l2cache_wb_range((a), (s))
#define cpu_l2cache_inv_range(a, s) cpufuncs.cf_l2cache_inv_range((a), (s))
#define cpu_l2cache_wbinv_range(a, s) cpufuncs.cf_l2cache_wbinv_range((a), (s))
#define cpu_l2cache_drain_writebuf() cpufuncs.cf_l2cache_drain_writebuf()
#if __ARM_ARCH < 6
#define cpu_drain_writebuf() cpufuncs.cf_drain_writebuf()
#endif
#define cpu_sleep(m) cpufuncs.cf_sleep(m)
#define cpu_setup() cpufuncs.cf_setup()
int set_cpufuncs (void);
#define ARCHITECTURE_NOT_PRESENT 1 /* known but not configured */
#define ARCHITECTURE_NOT_SUPPORTED 2 /* not known */
void cpufunc_nullop (void);
u_int cpu_ident (void);
u_int cpufunc_control (u_int clear, u_int bic);
void cpu_domains (u_int domains);
u_int cpu_faultstatus (void);
u_int cpu_faultaddress (void);
u_int cpu_get_control (void);
u_int cpu_pfr (int);
#if defined(CPU_FA526)
void fa526_setup (void);
void fa526_setttb (u_int ttb);
void fa526_context_switch (void);
void fa526_cpu_sleep (int);
void fa526_tlb_flushID_SE (u_int);
void fa526_icache_sync_range(vm_offset_t start, vm_size_t end);
void fa526_dcache_wbinv_all (void);
void fa526_dcache_wbinv_range(vm_offset_t start, vm_size_t end);
void fa526_dcache_inv_range (vm_offset_t start, vm_size_t end);
void fa526_dcache_wb_range (vm_offset_t start, vm_size_t end);
void fa526_idcache_wbinv_all(void);
void fa526_idcache_wbinv_range(vm_offset_t start, vm_size_t end);
#endif
#if defined(CPU_ARM9) || defined(CPU_ARM9E)
void arm9_setttb (u_int);
void arm9_tlb_flushID_SE (u_int va);
void arm9_context_switch (void);
#endif
#if defined(CPU_ARM9)
void arm9_icache_sync_range (vm_offset_t, vm_size_t);
void arm9_dcache_wbinv_all (void);
void arm9_dcache_wbinv_range (vm_offset_t, vm_size_t);
void arm9_dcache_inv_range (vm_offset_t, vm_size_t);
void arm9_dcache_wb_range (vm_offset_t, vm_size_t);
void arm9_idcache_wbinv_all (void);
void arm9_idcache_wbinv_range (vm_offset_t, vm_size_t);
void arm9_setup (void);
extern unsigned arm9_dcache_sets_max;
extern unsigned arm9_dcache_sets_inc;
extern unsigned arm9_dcache_index_max;
extern unsigned arm9_dcache_index_inc;
#endif
#if defined(CPU_ARM9E)
void arm10_setup (void);
u_int sheeva_control_ext (u_int, u_int);
void sheeva_cpu_sleep (int);
void sheeva_setttb (u_int);
void sheeva_dcache_wbinv_range (vm_offset_t, vm_size_t);
void sheeva_dcache_inv_range (vm_offset_t, vm_size_t);
void sheeva_dcache_wb_range (vm_offset_t, vm_size_t);
void sheeva_idcache_wbinv_range (vm_offset_t, vm_size_t);
void sheeva_l2cache_wbinv_range (vm_offset_t, vm_size_t);
void sheeva_l2cache_inv_range (vm_offset_t, vm_size_t);
void sheeva_l2cache_wb_range (vm_offset_t, vm_size_t);
void sheeva_l2cache_wbinv_all (void);
#endif
#if defined(CPU_MV_PJ4B)
void armv6_idcache_wbinv_all (void);
#endif
#if defined(CPU_CORTEXA) || defined(CPU_MV_PJ4B) || defined(CPU_KRAIT)
void armv7_idcache_wbinv_all (void);
void armv7_cpu_sleep (int);
void armv7_setup (void);
void armv7_drain_writebuf (void);
void cortexa_setup (void);
#endif
#if defined(CPU_MV_PJ4B)
void pj4b_config (void);
void pj4bv7_setup (void);
#endif
#if defined(CPU_ARM1176)
void arm11_drain_writebuf (void);
void arm11x6_setup (void);
void arm11x6_sleep (int); /* no ref. for errata */
#endif
#if defined(CPU_ARM9E)
void armv5_ec_setttb(u_int);
void armv5_ec_icache_sync_range(vm_offset_t, vm_size_t);
void armv5_ec_dcache_wbinv_all(void);
void armv5_ec_dcache_wbinv_range(vm_offset_t, vm_size_t);
void armv5_ec_dcache_inv_range(vm_offset_t, vm_size_t);
void armv5_ec_dcache_wb_range(vm_offset_t, vm_size_t);
void armv5_ec_idcache_wbinv_all(void);
void armv5_ec_idcache_wbinv_range(vm_offset_t, vm_size_t);
#endif
#if defined(CPU_ARM9) || defined(CPU_ARM9E) || \
defined(CPU_FA526) || \
defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425) || \
defined(CPU_XSCALE_81342)
void armv4_tlb_flushID (void);
void armv4_tlb_flushD (void);
void armv4_tlb_flushD_SE (u_int va);
void armv4_drain_writebuf (void);
void armv4_idcache_inv_all (void);
#endif
#if defined(CPU_XSCALE_PXA2X0) || defined(CPU_XSCALE_IXP425) || \
defined(CPU_XSCALE_81342)
void xscale_cpwait (void);
void xscale_cpu_sleep (int mode);
u_int xscale_control (u_int clear, u_int bic);
void xscale_setttb (u_int ttb);
void xscale_tlb_flushID_SE (u_int va);
void xscale_cache_flushID (void);
void xscale_cache_flushI (void);
void xscale_cache_flushD (void);
void xscale_cache_flushD_SE (u_int entry);
void xscale_cache_cleanID (void);
void xscale_cache_cleanD (void);
void xscale_cache_cleanD_E (u_int entry);
void xscale_cache_clean_minidata (void);
void xscale_cache_purgeID (void);
void xscale_cache_purgeID_E (u_int entry);
void xscale_cache_purgeD (void);
void xscale_cache_purgeD_E (u_int entry);
void xscale_cache_syncI (void);
void xscale_cache_cleanID_rng (vm_offset_t start, vm_size_t end);
void xscale_cache_cleanD_rng (vm_offset_t start, vm_size_t end);
void xscale_cache_purgeID_rng (vm_offset_t start, vm_size_t end);
void xscale_cache_purgeD_rng (vm_offset_t start, vm_size_t end);
void xscale_cache_syncI_rng (vm_offset_t start, vm_size_t end);
void xscale_cache_flushD_rng (vm_offset_t start, vm_size_t end);
void xscale_context_switch (void);
void xscale_setup (void);
#endif /* CPU_XSCALE_PXA2X0 || CPU_XSCALE_IXP425 */
#ifdef CPU_XSCALE_81342
void xscalec3_l2cache_purge (void);
void xscalec3_cache_purgeID (void);
void xscalec3_cache_purgeD (void);
void xscalec3_cache_cleanID (void);
void xscalec3_cache_cleanD (void);
void xscalec3_cache_syncI (void);
void xscalec3_cache_purgeID_rng (vm_offset_t start, vm_size_t end);
void xscalec3_cache_purgeD_rng (vm_offset_t start, vm_size_t end);
void xscalec3_cache_cleanID_rng (vm_offset_t start, vm_size_t end);
void xscalec3_cache_cleanD_rng (vm_offset_t start, vm_size_t end);
void xscalec3_cache_syncI_rng (vm_offset_t start, vm_size_t end);
void xscalec3_l2cache_flush_rng (vm_offset_t, vm_size_t);
void xscalec3_l2cache_clean_rng (vm_offset_t start, vm_size_t end);
void xscalec3_l2cache_purge_rng (vm_offset_t start, vm_size_t end);
void xscalec3_setttb (u_int ttb);
void xscalec3_context_switch (void);
#endif /* CPU_XSCALE_81342 */
/*
* Macros for manipulating CPU interrupts
*/
#if __ARM_ARCH < 6
#define __ARM_INTR_BITS (PSR_I | PSR_F)
#else
#define __ARM_INTR_BITS (PSR_I | PSR_F | PSR_A)
#endif
static __inline uint32_t
__set_cpsr(uint32_t bic, uint32_t eor)
{
uint32_t tmp, ret;
__asm __volatile(
"mrs %0, cpsr\n" /* Get the CPSR */
"bic %1, %0, %2\n" /* Clear bits */
"eor %1, %1, %3\n" /* XOR bits */
"msr cpsr_xc, %1\n" /* Set the CPSR */
: "=&r" (ret), "=&r" (tmp)
: "r" (bic), "r" (eor) : "memory");
return ret;
}
static __inline uint32_t
disable_interrupts(uint32_t mask)
{
return (__set_cpsr(mask & __ARM_INTR_BITS, mask & __ARM_INTR_BITS));
}
static __inline uint32_t
enable_interrupts(uint32_t mask)
{
return (__set_cpsr(mask & __ARM_INTR_BITS, 0));
}
static __inline uint32_t
restore_interrupts(uint32_t old_cpsr)
{
return (__set_cpsr(__ARM_INTR_BITS, old_cpsr & __ARM_INTR_BITS));
}
static __inline register_t
intr_disable(void)
{
return (disable_interrupts(PSR_I | PSR_F));
}
static __inline void
intr_restore(register_t s)
{
restore_interrupts(s);
}
#undef __ARM_INTR_BITS
/*
* Functions to manipulate cpu r13
* (in arm/arm32/setstack.S)
*/
void set_stackptr (u_int mode, u_int address);
u_int get_stackptr (u_int mode);
/*
* Miscellany
*/
int get_pc_str_offset (void);
/*
* CPU functions from locore.S
*/
void cpu_reset (void) __attribute__((__noreturn__));
/*
* Cache info variables.
*/
/* PRIMARY CACHE VARIABLES */
extern int arm_picache_size;
extern int arm_picache_line_size;
extern int arm_picache_ways;
extern int arm_pdcache_size; /* and unified */
extern int arm_pdcache_line_size;
extern int arm_pdcache_ways;
extern int arm_pcache_type;
extern int arm_pcache_unified;
extern int arm_dcache_align;
extern int arm_dcache_align_mask;
extern u_int arm_cache_level;
extern u_int arm_cache_loc;
extern u_int arm_cache_type[14];
#endif /* _KERNEL */
#endif /* _MACHINE_CPUFUNC_H_ */
/* End of cpufunc.h */
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