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freebsd-dev/sys/arm/include/cpu-v6.h

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/*-
* Copyright 2014 Svatopluk Kraus <onwahe@gmail.com>
* Copyright 2014 Michal Meloun <meloun@miracle.cz>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef MACHINE_CPU_V6_H
#define MACHINE_CPU_V6_H
#include "machine/atomic.h"
#include "machine/cpufunc.h"
#include "machine/cpuinfo.h"
#include "machine/sysreg.h"
#define CPU_ASID_KERNEL 0
/*
* Macros to generate CP15 (system control processor) read/write functions.
*/
#define _FX(s...) #s
#define _RF0(fname, aname...) \
static __inline register_t \
fname(void) \
{ \
register_t reg; \
__asm __volatile("mrc\t" _FX(aname): "=r" (reg)); \
return(reg); \
}
#define _WF0(fname, aname...) \
static __inline void \
fname(void) \
{ \
__asm __volatile("mcr\t" _FX(aname)); \
}
#define _WF1(fname, aname...) \
static __inline void \
fname(register_t reg) \
{ \
__asm __volatile("mcr\t" _FX(aname):: "r" (reg)); \
}
/*
* Raw CP15 maintenance operations
* !!! not for external use !!!
*/
/* TLB */
_WF0(_CP15_TLBIALL, CP15_TLBIALL) /* Invalidate entire unified TLB */
#if __ARM_ARCH >= 7 && defined SMP
_WF0(_CP15_TLBIALLIS, CP15_TLBIALLIS) /* Invalidate entire unified TLB IS */
#endif
_WF1(_CP15_TLBIASID, CP15_TLBIASID(%0)) /* Invalidate unified TLB by ASID */
#if __ARM_ARCH >= 7 && defined SMP
_WF1(_CP15_TLBIASIDIS, CP15_TLBIASIDIS(%0)) /* Invalidate unified TLB by ASID IS */
#endif
_WF1(_CP15_TLBIMVAA, CP15_TLBIMVAA(%0)) /* Invalidate unified TLB by MVA, all ASID */
#if __ARM_ARCH >= 7 && defined SMP
_WF1(_CP15_TLBIMVAAIS, CP15_TLBIMVAAIS(%0)) /* Invalidate unified TLB by MVA, all ASID IS */
#endif
_WF1(_CP15_TLBIMVA, CP15_TLBIMVA(%0)) /* Invalidate unified TLB by MVA */
_WF1(_CP15_TTB_SET, CP15_TTBR0(%0))
/* Cache and Branch predictor */
_WF0(_CP15_BPIALL, CP15_BPIALL) /* Branch predictor invalidate all */
#if __ARM_ARCH >= 7 && defined SMP
_WF0(_CP15_BPIALLIS, CP15_BPIALLIS) /* Branch predictor invalidate all IS */
#endif
_WF1(_CP15_BPIMVA, CP15_BPIMVA(%0)) /* Branch predictor invalidate by MVA */
_WF1(_CP15_DCCIMVAC, CP15_DCCIMVAC(%0)) /* Data cache clean and invalidate by MVA PoC */
_WF1(_CP15_DCCISW, CP15_DCCISW(%0)) /* Data cache clean and invalidate by set/way */
_WF1(_CP15_DCCMVAC, CP15_DCCMVAC(%0)) /* Data cache clean by MVA PoC */
#if __ARM_ARCH >= 7
_WF1(_CP15_DCCMVAU, CP15_DCCMVAU(%0)) /* Data cache clean by MVA PoU */
#endif
_WF1(_CP15_DCCSW, CP15_DCCSW(%0)) /* Data cache clean by set/way */
_WF1(_CP15_DCIMVAC, CP15_DCIMVAC(%0)) /* Data cache invalidate by MVA PoC */
_WF1(_CP15_DCISW, CP15_DCISW(%0)) /* Data cache invalidate by set/way */
_WF0(_CP15_ICIALLU, CP15_ICIALLU) /* Instruction cache invalidate all PoU */
#if __ARM_ARCH >= 7 && defined SMP
_WF0(_CP15_ICIALLUIS, CP15_ICIALLUIS) /* Instruction cache invalidate all PoU IS */
#endif
_WF1(_CP15_ICIMVAU, CP15_ICIMVAU(%0)) /* Instruction cache invalidate */
/*
* Publicly accessible functions
*/
/* Various control registers */
_RF0(cp15_dfsr_get, CP15_DFSR(%0))
_RF0(cp15_ifsr_get, CP15_IFSR(%0))
_WF1(cp15_prrr_set, CP15_PRRR(%0))
_WF1(cp15_nmrr_set, CP15_NMRR(%0))
_RF0(cp15_ttbr_get, CP15_TTBR0(%0))
_RF0(cp15_dfar_get, CP15_DFAR(%0))
#if __ARM_ARCH >= 7
_RF0(cp15_ifar_get, CP15_IFAR(%0))
#endif
/*CPU id registers */
_RF0(cp15_midr_get, CP15_MIDR(%0))
_RF0(cp15_ctr_get, CP15_CTR(%0))
_RF0(cp15_tcmtr_get, CP15_TCMTR(%0))
_RF0(cp15_tlbtr_get, CP15_TLBTR(%0))
_RF0(cp15_mpidr_get, CP15_MPIDR(%0))
_RF0(cp15_revidr_get, CP15_REVIDR(%0))
_RF0(cp15_aidr_get, CP15_AIDR(%0))
_RF0(cp15_id_pfr0_get, CP15_ID_PFR0(%0))
_RF0(cp15_id_pfr1_get, CP15_ID_PFR1(%0))
_RF0(cp15_id_dfr0_get, CP15_ID_DFR0(%0))
_RF0(cp15_id_afr0_get, CP15_ID_AFR0(%0))
_RF0(cp15_id_mmfr0_get, CP15_ID_MMFR0(%0))
_RF0(cp15_id_mmfr1_get, CP15_ID_MMFR1(%0))
_RF0(cp15_id_mmfr2_get, CP15_ID_MMFR2(%0))
_RF0(cp15_id_mmfr3_get, CP15_ID_MMFR3(%0))
_RF0(cp15_id_isar0_get, CP15_ID_ISAR0(%0))
_RF0(cp15_id_isar1_get, CP15_ID_ISAR1(%0))
_RF0(cp15_id_isar2_get, CP15_ID_ISAR2(%0))
_RF0(cp15_id_isar3_get, CP15_ID_ISAR3(%0))
_RF0(cp15_id_isar4_get, CP15_ID_ISAR4(%0))
_RF0(cp15_id_isar5_get, CP15_ID_ISAR5(%0))
_RF0(cp15_cbar_get, CP15_CBAR(%0))
#undef _FX
#undef _RF0
#undef _WF0
#undef _WF1
/*
* TLB maintenance operations.
*/
/* Local (i.e. not broadcasting ) operations. */
/* Flush all TLB entries (even global). */
static __inline void
tlb_flush_all_local(void)
{
dsb();
_CP15_TLBIALL();
dsb();
}
/* Flush all not global TLB entries. */
static __inline void
tlb_flush_all_ng_local(void)
{
dsb();
_CP15_TLBIASID(CPU_ASID_KERNEL);
dsb();
}
/* Flush single TLB entry (even global). */
static __inline void
tlb_flush_local(vm_offset_t sva)
{
dsb();
_CP15_TLBIMVA((sva & ~PAGE_MASK ) | CPU_ASID_KERNEL);
dsb();
}
/* Flush range of TLB entries (even global). */
static __inline void
tlb_flush_range_local(vm_offset_t sva, vm_size_t size)
{
vm_offset_t va;
vm_offset_t eva = sva + size;
dsb();
for (va = sva; va < eva; va += PAGE_SIZE)
_CP15_TLBIMVA((va & ~PAGE_MASK ) | CPU_ASID_KERNEL);
dsb();
}
/* Broadcasting operations. */
#ifndef SMP
#define tlb_flush_all() tlb_flush_all_local()
#define tlb_flush_all_ng() tlb_flush_all_ng_local()
#define tlb_flush(sva) tlb_flush_local(sva)
#define tlb_flush_range(sva, size) tlb_flush_range_local(sva, size)
#else /* SMP */
static __inline void
tlb_flush_all(void)
{
dsb();
_CP15_TLBIALLIS();
dsb();
}
static __inline void
tlb_flush_all_ng(void)
{
dsb();
_CP15_TLBIASIDIS(CPU_ASID_KERNEL);
dsb();
}
static __inline void
tlb_flush(vm_offset_t sva)
{
dsb();
_CP15_TLBIMVAAIS(sva);
dsb();
}
static __inline void
tlb_flush_range(vm_offset_t sva, vm_size_t size)
{
vm_offset_t va;
vm_offset_t eva = sva + size;
dsb();
for (va = sva; va < eva; va += PAGE_SIZE)
_CP15_TLBIMVAAIS(va);
dsb();
}
#endif /* SMP */
/*
* Cache maintenance operations.
*/
/* Sync I and D caches to PoU */
static __inline void
icache_sync(vm_offset_t sva, vm_size_t size)
{
vm_offset_t va;
vm_offset_t eva = sva + size;
dsb();
for (va = sva; va < eva; va += arm_dcache_align) {
#ifdef SMP
_CP15_DCCMVAU(va);
#else
_CP15_DCCMVAC(va);
#endif
}
dsb();
#ifdef SMP
_CP15_ICIALLUIS();
#else
_CP15_ICIALLU();
#endif
dsb();
isb();
}
/* Invalidate I cache */
static __inline void
icache_inv_all(void)
{
#ifdef SMP
_CP15_ICIALLUIS();
#else
_CP15_ICIALLU();
#endif
dsb();
isb();
}
/* Write back D-cache to PoU */
static __inline void
dcache_wb_pou(vm_offset_t sva, vm_size_t size)
{
vm_offset_t va;
vm_offset_t eva = sva + size;
dsb();
for (va = sva; va < eva; va += arm_dcache_align) {
#ifdef SMP
_CP15_DCCMVAU(va);
#else
_CP15_DCCMVAC(va);
#endif
}
dsb();
}
/* Invalidate D-cache to PoC */
static __inline void
dcache_inv_poc(vm_offset_t sva, vm_paddr_t pa, vm_size_t size)
{
vm_offset_t va;
vm_offset_t eva = sva + size;
/* invalidate L1 first */
for (va = sva; va < eva; va += arm_dcache_align) {
_CP15_DCIMVAC(va);
}
dsb();
/* then L2 */
cpu_l2cache_inv_range(pa, size);
dsb();
/* then L1 again */
for (va = sva; va < eva; va += arm_dcache_align) {
_CP15_DCIMVAC(va);
}
dsb();
}
/* Write back D-cache to PoC */
static __inline void
dcache_wb_poc(vm_offset_t sva, vm_paddr_t pa, vm_size_t size)
{
vm_offset_t va;
vm_offset_t eva = sva + size;
dsb();
for (va = sva; va < eva; va += arm_dcache_align) {
_CP15_DCCMVAC(va);
}
dsb();
cpu_l2cache_wb_range(pa, size);
}
/* Write back and invalidate D-cache to PoC */
static __inline void
dcache_wbinv_poc(vm_offset_t sva, vm_paddr_t pa, vm_size_t size)
{
vm_offset_t va;
vm_offset_t eva = sva + size;
dsb();
/* write back L1 first */
for (va = sva; va < eva; va += arm_dcache_align) {
_CP15_DCCMVAC(va);
}
dsb();
/* then write back and invalidate L2 */
cpu_l2cache_wbinv_range(pa, size);
/* then invalidate L1 */
for (va = sva; va < eva; va += arm_dcache_align) {
_CP15_DCIMVAC(va);
}
dsb();
}
/* Set TTB0 register */
static __inline void
cp15_ttbr_set(uint32_t reg)
{
dsb();
_CP15_TTB_SET(reg);
dsb();
_CP15_BPIALL();
dsb();
isb();
tlb_flush_all_ng_local();
}
#endif /* !MACHINE_CPU_V6_H */
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