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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _SPARC_TRAP_BLOCK_H
#define _SPARC_TRAP_BLOCK_H

#include <asm/hypervisor.h>
#include <asm/asi.h>

#ifndef __ASSEMBLY__

/* Trap handling code needs to get at a few critical values upon
 * trap entry and to process TSB misses.  These cannot be in the
 * per_cpu() area as we really need to lock them into the TLB and
 * thus make them part of the main kernel image.  As a result we
 * try to make this as small as possible.
 *
 * This is padded out and aligned to 64-bytes to avoid false sharing
 * on SMP.
 */

/* If you modify the size of this structure, please update
 * TRAP_BLOCK_SZ_SHIFT below.
 */
struct thread_info;
struct trap_per_cpu {
/* D-cache line 1: Basic thread information, cpu and device mondo queues */
	struct thread_info	*thread;
	unsigned long		pgd_paddr;
	unsigned long		cpu_mondo_pa;
	unsigned long		dev_mondo_pa;

/* D-cache line 2: Error Mondo Queue and kernel buffer pointers */
	unsigned long		resum_mondo_pa;
	unsigned long		resum_kernel_buf_pa;
	unsigned long		nonresum_mondo_pa;
	unsigned long		nonresum_kernel_buf_pa;

/* Dcache lines 3, 4, 5, and 6: Hypervisor Fault Status */
	struct hv_fault_status	fault_info;

/* Dcache line 7: Physical addresses of CPU send mondo block and CPU list.  */
	unsigned long		cpu_mondo_block_pa;
	unsigned long		cpu_list_pa;
	unsigned long		tsb_huge;
	unsigned long		tsb_huge_temp;

/* Dcache line 8: IRQ work list, and keep trap_block a power-of-2 in size.  */
	unsigned long		irq_worklist_pa;
	unsigned int		cpu_mondo_qmask;
	unsigned int		dev_mondo_qmask;
	unsigned int		resum_qmask;
	unsigned int		nonresum_qmask;
	unsigned long		__per_cpu_base;
} __attribute__((aligned(64)));
extern struct trap_per_cpu trap_block[NR_CPUS];
void init_cur_cpu_trap(struct thread_info *);
void setup_tba(void);
extern int ncpus_probed;
extern u64 cpu_mondo_counter[NR_CPUS];

unsigned long real_hard_smp_processor_id(void);

struct cpuid_patch_entry {
	unsigned int	addr;
	unsigned int	cheetah_safari[4];
	unsigned int	cheetah_jbus[4];
	unsigned int	starfire[4];
	unsigned int	sun4v[4];
};
extern struct cpuid_patch_entry __cpuid_patch, __cpuid_patch_end;

struct sun4v_1insn_patch_entry {
	unsigned int	addr;
	unsigned int	insn;
};
extern struct sun4v_1insn_patch_entry __sun4v_1insn_patch,
	__sun4v_1insn_patch_end;
extern struct sun4v_1insn_patch_entry __fast_win_ctrl_1insn_patch,
	__fast_win_ctrl_1insn_patch_end;

struct sun4v_2insn_patch_entry {
	unsigned int	addr;
	unsigned int	insns[2];
};
extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
	__sun4v_2insn_patch_end;
extern struct sun4v_2insn_patch_entry __sun_m7_2insn_patch,
	__sun_m7_2insn_patch_end;


#endif /* !(__ASSEMBLY__) */

#define TRAP_PER_CPU_THREAD		0x00
#define TRAP_PER_CPU_PGD_PADDR		0x08
#define TRAP_PER_CPU_CPU_MONDO_PA	0x10
#define TRAP_PER_CPU_DEV_MONDO_PA	0x18
#define TRAP_PER_CPU_RESUM_MONDO_PA	0x20
#define TRAP_PER_CPU_RESUM_KBUF_PA	0x28
#define TRAP_PER_CPU_NONRESUM_MONDO_PA	0x30
#define TRAP_PER_CPU_NONRESUM_KBUF_PA	0x38
#define TRAP_PER_CPU_FAULT_INFO		0x40
#define TRAP_PER_CPU_CPU_MONDO_BLOCK_PA	0xc0
#define TRAP_PER_CPU_CPU_LIST_PA	0xc8
#define TRAP_PER_CPU_TSB_HUGE		0xd0
#define TRAP_PER_CPU_TSB_HUGE_TEMP	0xd8
#define TRAP_PER_CPU_IRQ_WORKLIST_PA	0xe0
#define TRAP_PER_CPU_CPU_MONDO_QMASK	0xe8
#define TRAP_PER_CPU_DEV_MONDO_QMASK	0xec
#define TRAP_PER_CPU_RESUM_QMASK	0xf0
#define TRAP_PER_CPU_NONRESUM_QMASK	0xf4
#define TRAP_PER_CPU_PER_CPU_BASE	0xf8

#define TRAP_BLOCK_SZ_SHIFT		8

#include <asm/scratchpad.h>

#define __GET_CPUID(REG)				\
	/* Spitfire implementation (default). */	\
661:	ldxa		[%g0] ASI_UPA_CONFIG, REG;	\
	srlx		REG, 17, REG;			\
	 and		REG, 0x1f, REG;			\
	nop;						\
	.section	.cpuid_patch, "ax";		\
	/* Instruction location. */			\
	.word		661b;				\
	/* Cheetah Safari implementation. */		\
	ldxa		[%g0] ASI_SAFARI_CONFIG, REG;	\
	srlx		REG, 17, REG;			\
	and		REG, 0x3ff, REG;		\
	nop;						\
	/* Cheetah JBUS implementation. */		\
	ldxa		[%g0] ASI_JBUS_CONFIG, REG;	\
	srlx		REG, 17, REG;			\
	and		REG, 0x1f, REG;			\
	nop;						\
	/* Starfire implementation. */			\
	sethi		%hi(0x1fff40000d0 >> 9), REG;	\
	sllx		REG, 9, REG;			\
	or		REG, 0xd0, REG;			\
	lduwa		[REG] ASI_PHYS_BYPASS_EC_E, REG;\
	/* sun4v implementation. */			\
	mov		SCRATCHPAD_CPUID, REG;		\
	ldxa		[REG] ASI_SCRATCHPAD, REG;	\
	nop;						\
	nop;						\
	.previous;

#ifdef CONFIG_SMP

#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	__GET_CPUID(TMP)			\
	sethi	%hi(trap_block), DEST;		\
	sllx	TMP, TRAP_BLOCK_SZ_SHIFT, TMP;	\
	or	DEST, %lo(trap_block), DEST;	\
	add	DEST, TMP, DEST;		\

/* Clobbers TMP, current address space PGD phys address into DEST.  */
#define TRAP_LOAD_PGD_PHYS(DEST, TMP)		\
	TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	ldx	[DEST + TRAP_PER_CPU_PGD_PADDR], DEST;

/* Clobbers TMP, loads local processor's IRQ work area into DEST.  */
#define TRAP_LOAD_IRQ_WORK_PA(DEST, TMP)	\
	TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	add	DEST, TRAP_PER_CPU_IRQ_WORKLIST_PA, DEST;

/* Clobbers TMP, loads DEST with current thread info pointer.  */
#define TRAP_LOAD_THREAD_REG(DEST, TMP)		\
	TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	ldx	[DEST + TRAP_PER_CPU_THREAD], DEST;

/* Given the current thread info pointer in THR, load the per-cpu
 * area base of the current processor into DEST.  REG1, REG2, and REG3 are
 * clobbered.
 *
 * You absolutely cannot use DEST as a temporary in this code.  The
 * reason is that traps can happen during execution, and return from
 * trap will load the fully resolved DEST per-cpu base.  This can corrupt
 * the calculations done by the macro mid-stream.
 */
#define LOAD_PER_CPU_BASE(DEST, THR, REG1, REG2, REG3)	\
	lduh	[THR + TI_CPU], REG1;			\
	sethi	%hi(trap_block), REG2;			\
	sllx	REG1, TRAP_BLOCK_SZ_SHIFT, REG1;	\
	or	REG2, %lo(trap_block), REG2;		\
	add	REG2, REG1, REG2;			\
	ldx	[REG2 + TRAP_PER_CPU_PER_CPU_BASE], DEST;

#else

#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	sethi	%hi(trap_block), DEST;		\
	or	DEST, %lo(trap_block), DEST;	\

/* Uniprocessor versions, we know the cpuid is zero.  */
#define TRAP_LOAD_PGD_PHYS(DEST, TMP)		\
	TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	ldx	[DEST + TRAP_PER_CPU_PGD_PADDR], DEST;

/* Clobbers TMP, loads local processor's IRQ work area into DEST.  */
#define TRAP_LOAD_IRQ_WORK_PA(DEST, TMP)	\
	TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	add	DEST, TRAP_PER_CPU_IRQ_WORKLIST_PA, DEST;

#define TRAP_LOAD_THREAD_REG(DEST, TMP)		\
	TRAP_LOAD_TRAP_BLOCK(DEST, TMP)		\
	ldx	[DEST + TRAP_PER_CPU_THREAD], DEST;

/* No per-cpu areas on uniprocessor, so no need to load DEST.  */
#define LOAD_PER_CPU_BASE(DEST, THR, REG1, REG2, REG3)

#endif /* !(CONFIG_SMP) */

#endif /* _SPARC_TRAP_BLOCK_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 491 B 0644
agp.h File 434 B 0644
apb.h File 1.06 KB 0644
asm-offsets.h File 35 B 0644
asm-prototypes.h File 727 B 0644
asm.h File 1.08 KB 0644
asmmacro.h File 1.16 KB 0644
atomic.h File 219 B 0644
atomic_32.h File 2.26 KB 0644
atomic_64.h File 3.34 KB 0644
auxio.h File 310 B 0644
auxio_32.h File 2.55 KB 0644
auxio_64.h File 3.18 KB 0644
backoff.h File 2.7 KB 0644
barrier.h File 223 B 0644
barrier_32.h File 160 B 0644
barrier_64.h File 1.96 KB 0644
bbc.h File 9.76 KB 0644
bitext.h File 631 B 0644
bitops.h File 219 B 0644
bitops_32.h File 2.79 KB 0644
bitops_64.h File 1.64 KB 0644
btext.h File 145 B 0644
bug.h File 588 B 0644
bugs.h File 404 B 0644
cache.h File 649 B 0644
cacheflush.h File 373 B 0644
cacheflush_32.h File 1.97 KB 0644
cacheflush_64.h File 2.56 KB 0644
cachetlb_32.h File 882 B 0644
chafsr.h File 9.48 KB 0644
checksum.h File 227 B 0644
checksum_32.h File 6.81 KB 0644
checksum_64.h File 4.4 KB 0644
chmctrl.h File 7.91 KB 0644
clock.h File 231 B 0644
clocksource.h File 407 B 0644
cmpxchg.h File 223 B 0644
cmpxchg_32.h File 2.4 KB 0644
cmpxchg_64.h File 5.13 KB 0644
compat.h File 6.45 KB 0644
compat_signal.h File 565 B 0644
contregs.h File 1.9 KB 0644
cpu_type.h File 579 B 0644
cpudata.h File 378 B 0644
cpudata_32.h File 729 B 0644
cpudata_64.h File 1.13 KB 0644
current.h File 991 B 0644
dcr.h File 728 B 0644
dcu.h File 1.48 KB 0644
delay.h File 215 B 0644
delay_32.h File 907 B 0644
delay_64.h File 403 B 0644
device.h File 565 B 0644
dma-mapping.h File 632 B 0644
dma.h File 6.6 KB 0644
ebus_dma.h File 1.07 KB 0644
ecc.h File 4.34 KB 0644
eeprom.h File 254 B 0644
elf.h File 207 B 0644
elf_32.h File 3.19 KB 0644
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estate.h File 2.23 KB 0644
extable_64.h File 727 B 0644
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fbio.h File 2.26 KB 0644
fhc.h File 4.43 KB 0644
floppy.h File 219 B 0644
floppy_32.h File 9.74 KB 0644
floppy_64.h File 18.83 KB 0644
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hardirq.h File 223 B 0644
hardirq_32.h File 334 B 0644
hardirq_64.h File 417 B 0644
head.h File 211 B 0644
head_32.h File 2.56 KB 0644
head_64.h File 2.13 KB 0644
hibernate.h File 421 B 0644
highmem.h File 2.02 KB 0644
hugetlb.h File 2.09 KB 0644
hvtramp.h File 782 B 0644
hw_irq.h File 88 B 0644
hypervisor.h File 110.71 KB 0644
ide.h File 2.19 KB 0644
idprom.h File 656 B 0644
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io.h File 620 B 0644
io_32.h File 3.51 KB 0644
io_64.h File 10.66 KB 0644
ioctls.h File 358 B 0644
iommu.h File 215 B 0644
iommu_32.h File 5.73 KB 0644
iommu_64.h File 2.43 KB 0644
irq.h File 207 B 0644
irq_32.h File 526 B 0644
irq_64.h File 3.06 KB 0644
irqflags.h File 227 B 0644
irqflags_32.h File 1.03 KB 0644
irqflags_64.h File 1.91 KB 0644
jump_label.h File 1.01 KB 0644
kdebug.h File 219 B 0644
kdebug_32.h File 1.99 KB 0644
kdebug_64.h File 393 B 0644
kgdb.h File 1014 B 0644
kmap_types.h File 233 B 0644
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ldc.h File 4.37 KB 0644
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leon_amba.h File 8.09 KB 0644
leon_pci.h File 512 B 0644
lsu.h File 1.04 KB 0644
machines.h File 1.5 KB 0644
mbus.h File 2.93 KB 0644
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mc146818rtc_32.h File 699 B 0644
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msi.h File 774 B 0644
mxcc.h File 4.33 KB 0644
nmi.h File 354 B 0644
ns87303.h File 3.22 KB 0644
obio.h File 6.26 KB 0644
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oplib.h File 215 B 0644
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page.h File 274 B 0644
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parport.h File 5.68 KB 0644
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percpu_32.h File 168 B 0644
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pgalloc.h File 223 B 0644
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spinlock.h File 227 B 0644
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spinlock_64.h File 409 B 0644
spinlock_types.h File 549 B 0644
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stacktrace.h File 166 B 0644
starfire.h File 418 B 0644
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switch_to_64.h File 2.58 KB 0644
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timex.h File 215 B 0644
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tlbflush_32.h File 621 B 0644
tlbflush_64.h File 1.73 KB 0644
topology.h File 227 B 0644
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topology_64.h File 1.51 KB 0644
trap_block.h File 6.51 KB 0644
traps.h File 577 B 0644
tsb.h File 12.17 KB 0644
tsunami.h File 1.85 KB 0644
ttable.h File 20.08 KB 0644
turbosparc.h File 3.78 KB 0644
uaccess.h File 363 B 0644
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uaccess_64.h File 6.05 KB 0644
unaligned.h File 339 B 0644
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user.h File 102 B 0644
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