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/*
 * arch/arm64/include/asm/arch_gicv3.h
 *
 * Copyright (C) 2015 ARM Ltd.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __ASM_ARCH_GICV3_H
#define __ASM_ARCH_GICV3_H

#include <asm/sysreg.h>

#ifndef __ASSEMBLY__

#include <linux/stringify.h>
#include <asm/barrier.h>
#include <asm/cacheflush.h>

#define read_gicreg(r)			read_sysreg_s(SYS_ ## r)
#define write_gicreg(v, r)		write_sysreg_s(v, SYS_ ## r)

/*
 * Low-level accessors
 *
 * These system registers are 32 bits, but we make sure that the compiler
 * sets the GP register's most significant bits to 0 with an explicit cast.
 */

static inline void gic_write_eoir(u32 irq)
{
	write_sysreg_s(irq, SYS_ICC_EOIR1_EL1);
	isb();
}

static inline void gic_write_dir(u32 irq)
{
	write_sysreg_s(irq, SYS_ICC_DIR_EL1);
	isb();
}

static inline u64 gic_read_iar_common(void)
{
	u64 irqstat;

	irqstat = read_sysreg_s(SYS_ICC_IAR1_EL1);
	dsb(sy);
	return irqstat;
}

/*
 * Cavium ThunderX erratum 23154
 *
 * The gicv3 of ThunderX requires a modified version for reading the
 * IAR status to ensure data synchronization (access to icc_iar1_el1
 * is not sync'ed before and after).
 */
static inline u64 gic_read_iar_cavium_thunderx(void)
{
	u64 irqstat;

	nops(8);
	irqstat = read_sysreg_s(SYS_ICC_IAR1_EL1);
	nops(4);
	mb();

	return irqstat;
}

static inline void gic_write_pmr(u32 val)
{
	write_sysreg_s(val, SYS_ICC_PMR_EL1);
}

static inline void gic_write_ctlr(u32 val)
{
	write_sysreg_s(val, SYS_ICC_CTLR_EL1);
	isb();
}

static inline u32 gic_read_ctlr(void)
{
	return read_sysreg_s(SYS_ICC_CTLR_EL1);
}

static inline void gic_write_grpen1(u32 val)
{
	write_sysreg_s(val, SYS_ICC_IGRPEN1_EL1);
	isb();
}

static inline void gic_write_sgi1r(u64 val)
{
	write_sysreg_s(val, SYS_ICC_SGI1R_EL1);
}

static inline u32 gic_read_sre(void)
{
	return read_sysreg_s(SYS_ICC_SRE_EL1);
}

static inline void gic_write_sre(u32 val)
{
	write_sysreg_s(val, SYS_ICC_SRE_EL1);
	isb();
}

static inline void gic_write_bpr1(u32 val)
{
	write_sysreg_s(val, SYS_ICC_BPR1_EL1);
}

#define gic_read_typer(c)		readq_relaxed(c)
#define gic_write_irouter(v, c)		writeq_relaxed(v, c)
#define gic_read_lpir(c)		readq_relaxed(c)
#define gic_write_lpir(v, c)		writeq_relaxed(v, c)

#define gic_flush_dcache_to_poc(a,l)	__flush_dcache_area((a), (l))

#define gits_read_baser(c)		readq_relaxed(c)
#define gits_write_baser(v, c)		writeq_relaxed(v, c)

#define gits_read_cbaser(c)		readq_relaxed(c)
#define gits_write_cbaser(v, c)		writeq_relaxed(v, c)

#define gits_write_cwriter(v, c)	writeq_relaxed(v, c)

#define gicr_read_propbaser(c)		readq_relaxed(c)
#define gicr_write_propbaser(v, c)	writeq_relaxed(v, c)

#define gicr_write_pendbaser(v, c)	writeq_relaxed(v, c)
#define gicr_read_pendbaser(c)		readq_relaxed(c)

#define gits_write_vpropbaser(v, c)	writeq_relaxed(v, c)

#define gits_write_vpendbaser(v, c)	writeq_relaxed(v, c)
#define gits_read_vpendbaser(c)		readq_relaxed(c)

#endif /* __ASSEMBLY__ */
#endif /* __ASM_ARCH_GICV3_H */

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Kbuild File 703 B 0644
acenv.h File 541 B 0644
acpi.h File 4.34 KB 0644
alternative.h File 7.63 KB 0644
arch_gicv3.h File 3.44 KB 0644
arch_timer.h File 4.87 KB 0644
arm-cci.h File 794 B 0644
asm-bug.h File 1.45 KB 0644
asm-offsets.h File 35 B 0644
asm-uaccess.h File 2.09 KB 0644
assembler.h File 13.51 KB 0644
atomic.h File 8.35 KB 0644
atomic_ll_sc.h File 10.62 KB 0644
atomic_lse.h File 14.82 KB 0644
barrier.h File 3.78 KB 0644
bitops.h File 1.9 KB 0644
bitrev.h File 452 B 0644
boot.h File 384 B 0644
brk-imm.h File 706 B 0644
bug.h File 1.09 KB 0644
cache.h File 2.23 KB 0644
cacheflush.h File 4.87 KB 0644
checksum.h File 1.35 KB 0644
clocksource.h File 192 B 0644
cmpxchg.h File 7.98 KB 0644
compat.h File 7.15 KB 0644
compiler.h File 1.18 KB 0644
cpu.h File 1.84 KB 0644
cpu_ops.h File 2.73 KB 0644
cpucaps.h File 1.83 KB 0644
cpufeature.h File 19.14 KB 0644
cpuidle.h File 401 B 0644
cputype.h File 8.1 KB 0644
current.h File 517 B 0644
daifflags.h File 1.59 KB 0644
dcc.h File 1.36 KB 0644
debug-monitors.h File 3.76 KB 0644
device.h File 886 B 0644
dma-mapping.h File 2.42 KB 0644
dmi.h File 850 B 0644
efi.h File 4.57 KB 0644
elf.h File 5.7 KB 0644
esr.h File 9.02 KB 0644
exception.h File 1.21 KB 0644
exec.h File 868 B 0644
extable.h File 815 B 0644
fb.h File 1000 B 0644
fixmap.h File 2.91 KB 0644
fpsimd.h File 4.21 KB 0644
fpsimdmacros.h File 5.62 KB 0644
ftrace.h File 1.92 KB 0644
futex.h File 3.41 KB 0644
hardirq.h File 2.08 KB 0644
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io.h File 7.72 KB 0644
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kernel-pgtable.h File 4.03 KB 0644
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kvm_emulate.h File 10.38 KB 0644
kvm_host.h File 15.73 KB 0644
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sections.h File 1.46 KB 0644
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stage2_pgtable-nopud.h File 1.24 KB 0644
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sysreg.h File 25.1 KB 0644
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tlb.h File 2.22 KB 0644
tlbflush.h File 5.38 KB 0644
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vdso_datapage.h File 1.53 KB 0644
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word-at-a-time.h File 2.22 KB 0644