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

#include <linux/const.h>
#include <asm/page.h>
#include <asm/hypervisor.h>

#define CTX_NR_BITS		13

#define TAG_CONTEXT_BITS	((_AC(1,UL) << CTX_NR_BITS) - _AC(1,UL))

/* UltraSPARC-III+ and later have a feature whereby you can
 * select what page size the various Data-TLB instances in the
 * chip.  In order to gracefully support this, we put the version
 * field in a spot outside of the areas of the context register
 * where this parameter is specified.
 */
#define CTX_VERSION_SHIFT	22
#define CTX_VERSION_MASK	((~0UL) << CTX_VERSION_SHIFT)

#define CTX_PGSZ_8KB		_AC(0x0,UL)
#define CTX_PGSZ_64KB		_AC(0x1,UL)
#define CTX_PGSZ_512KB		_AC(0x2,UL)
#define CTX_PGSZ_4MB		_AC(0x3,UL)
#define CTX_PGSZ_BITS		_AC(0x7,UL)
#define CTX_PGSZ0_NUC_SHIFT	61
#define CTX_PGSZ1_NUC_SHIFT	58
#define CTX_PGSZ0_SHIFT		16
#define CTX_PGSZ1_SHIFT		19
#define CTX_PGSZ_MASK		((CTX_PGSZ_BITS << CTX_PGSZ0_SHIFT) | \
				 (CTX_PGSZ_BITS << CTX_PGSZ1_SHIFT))

#define CTX_PGSZ_BASE	CTX_PGSZ_8KB
#define CTX_PGSZ_HUGE	CTX_PGSZ_4MB
#define CTX_PGSZ_KERN	CTX_PGSZ_4MB

/* Thus, when running on UltraSPARC-III+ and later, we use the following
 * PRIMARY_CONTEXT register values for the kernel context.
 */
#define CTX_CHEETAH_PLUS_NUC \
	((CTX_PGSZ_KERN << CTX_PGSZ0_NUC_SHIFT) | \
	 (CTX_PGSZ_BASE << CTX_PGSZ1_NUC_SHIFT))

#define CTX_CHEETAH_PLUS_CTX0 \
	((CTX_PGSZ_KERN << CTX_PGSZ0_SHIFT) | \
	 (CTX_PGSZ_BASE << CTX_PGSZ1_SHIFT))

/* If you want "the TLB context number" use CTX_NR_MASK.  If you
 * want "the bits I program into the context registers" use
 * CTX_HW_MASK.
 */
#define CTX_NR_MASK		TAG_CONTEXT_BITS
#define CTX_HW_MASK		(CTX_NR_MASK | CTX_PGSZ_MASK)

#define CTX_FIRST_VERSION	BIT(CTX_VERSION_SHIFT)
#define CTX_VALID(__ctx)	\
	 (!(((__ctx.sparc64_ctx_val) ^ tlb_context_cache) & CTX_VERSION_MASK))
#define CTX_HWBITS(__ctx)	((__ctx.sparc64_ctx_val) & CTX_HW_MASK)
#define CTX_NRBITS(__ctx)	((__ctx.sparc64_ctx_val) & CTX_NR_MASK)

#ifndef __ASSEMBLY__

#define TSB_ENTRY_ALIGNMENT	16

struct tsb {
	unsigned long tag;
	unsigned long pte;
} __attribute__((aligned(TSB_ENTRY_ALIGNMENT)));

void __tsb_insert(unsigned long ent, unsigned long tag, unsigned long pte);
void tsb_flush(unsigned long ent, unsigned long tag);
void tsb_init(struct tsb *tsb, unsigned long size);

struct tsb_config {
	struct tsb		*tsb;
	unsigned long		tsb_rss_limit;
	unsigned long		tsb_nentries;
	unsigned long		tsb_reg_val;
	unsigned long		tsb_map_vaddr;
	unsigned long		tsb_map_pte;
};

#define MM_TSB_BASE	0

#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
#define MM_TSB_HUGE	1
#define MM_NUM_TSBS	2
#else
#define MM_NUM_TSBS	1
#endif

typedef struct {
	spinlock_t		lock;
	unsigned long		sparc64_ctx_val;
	unsigned long		hugetlb_pte_count;
	unsigned long		thp_pte_count;
	struct tsb_config	tsb_block[MM_NUM_TSBS];
	struct hv_tsb_descr	tsb_descr[MM_NUM_TSBS];
	void			*vdso;
} mm_context_t;

#endif /* !__ASSEMBLY__ */

#define TSB_CONFIG_TSB		0x00
#define TSB_CONFIG_RSS_LIMIT	0x08
#define TSB_CONFIG_NENTRIES	0x10
#define TSB_CONFIG_REG_VAL	0x18
#define TSB_CONFIG_MAP_VADDR	0x20
#define TSB_CONFIG_MAP_PTE	0x28

#endif /* __MMU_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
elf_64.h File 6.47 KB 0644
estate.h File 2.23 KB 0644
extable_64.h File 727 B 0644
fb.h File 680 B 0644
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
fpumacro.h File 710 B 0644
ftrace.h File 800 B 0644
futex.h File 215 B 0644
futex_32.h File 82 B 0644
futex_64.h File 2.15 KB 0644
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
intr_queue.h File 794 B 0644
io-unit.h File 2.41 KB 0644
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
kprobes.h File 1.41 KB 0644
ldc.h File 4.37 KB 0644
leon.h File 7.37 KB 0644
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
mc146818rtc.h File 298 B 0644
mc146818rtc_32.h File 699 B 0644
mc146818rtc_64.h File 689 B 0644
mdesc.h File 2.99 KB 0644
memctrl.h File 311 B 0644
mman.h File 304 B 0644
mmu.h File 207 B 0644
mmu_32.h File 209 B 0644
mmu_64.h File 3.14 KB 0644
mmu_context.h File 239 B 0644
mmu_context_32.h File 1.07 KB 0644
mmu_context_64.h File 4.15 KB 0644
mmzone.h File 393 B 0644
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
openprom.h File 7.3 KB 0644
oplib.h File 215 B 0644
oplib_32.h File 5.92 KB 0644
oplib_64.h File 8.12 KB 0644
page.h File 274 B 0644
page_32.h File 3.91 KB 0644
page_64.h File 4.49 KB 0644
parport.h File 5.68 KB 0644
pbm.h File 1.47 KB 0644
pci.h File 207 B 0644
pci_32.h File 1.09 KB 0644
pci_64.h File 1.49 KB 0644
pcic.h File 5.77 KB 0644
pcr.h File 1.85 KB 0644
percpu.h File 219 B 0644
percpu_32.h File 168 B 0644
percpu_64.h File 515 B 0644
perf_event.h File 802 B 0644
pgalloc.h File 223 B 0644
pgalloc_32.h File 1.91 KB 0644
pgalloc_64.h File 2.85 KB 0644
pgtable.h File 223 B 0644
pgtable_32.h File 11.35 KB 0644
pgtable_64.h File 30.71 KB 0644
pgtsrmmu.h File 6.05 KB 0644
pil.h File 1.08 KB 0644
processor.h File 231 B 0644
processor_32.h File 3.13 KB 0644
processor_64.h File 7.58 KB 0644
prom.h File 2.02 KB 0644
psr.h File 1.38 KB 0644
ptrace.h File 4.19 KB 0644
qrwlock.h File 205 B 0644
qspinlock.h File 215 B 0644
ross.h File 5.52 KB 0644
sbi.h File 3.34 KB 0644
scratchpad.h File 547 B 0644
seccomp.h File 225 B 0644
sections.h File 289 B 0644
setup.h File 1.52 KB 0644
sfafsr.h File 3.14 KB 0644
sfp-machine.h File 239 B 0644
sfp-machine_32.h File 6.79 KB 0644
sfp-machine_64.h File 3.1 KB 0644
shmparam.h File 227 B 0644
shmparam_32.h File 253 B 0644
shmparam_64.h File 306 B 0644
sigcontext.h File 2.55 KB 0644
signal.h File 835 B 0644
smp.h File 207 B 0644
smp_32.h File 3.29 KB 0644
smp_64.h File 1.84 KB 0644
sparsemem.h File 349 B 0644
spinlock.h File 227 B 0644
spinlock_32.h File 4.22 KB 0644
spinlock_64.h File 409 B 0644
spinlock_types.h File 549 B 0644
spitfire.h File 9.73 KB 0644
stacktrace.h File 166 B 0644
starfire.h File 418 B 0644
string.h File 1.13 KB 0644
string_32.h File 405 B 0644
string_64.h File 505 B 0644
sunbpp.h File 3.27 KB 0644
swift.h File 3.07 KB 0644
switch_to.h File 231 B 0644
switch_to_32.h File 3.53 KB 0644
switch_to_64.h File 2.58 KB 0644
syscall.h File 3.41 KB 0644
syscalls.h File 307 B 0644
termbits.h File 198 B 0644
termios.h File 4.94 KB 0644
thread_info.h File 239 B 0644
thread_info_32.h File 3.66 KB 0644
thread_info_64.h File 7.84 KB 0644
timer.h File 215 B 0644
timer_32.h File 1.18 KB 0644
timer_64.h File 2.37 KB 0644
timex.h File 215 B 0644
timex_32.h File 266 B 0644
timex_64.h File 423 B 0644
tlb.h File 207 B 0644
tlb_32.h File 520 B 0644
tlb_64.h File 913 B 0644
tlbflush.h File 227 B 0644
tlbflush_32.h File 621 B 0644
tlbflush_64.h File 1.73 KB 0644
topology.h File 227 B 0644
topology_32.h File 170 B 0644
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
uaccess_32.h File 8.31 KB 0644
uaccess_64.h File 6.05 KB 0644
unaligned.h File 339 B 0644
unistd.h File 1.37 KB 0644
upa.h File 3.72 KB 0644
uprobes.h File 1.86 KB 0644
user.h File 102 B 0644
vaddrs.h File 2.02 KB 0644
vdso.h File 662 B 0644
vga.h File 964 B 0644
viking.h File 8.14 KB 0644
vio.h File 11.81 KB 0644
visasm.h File 1.51 KB 0644
vvar.h File 1.52 KB 0644
winmacro.h File 4.66 KB 0644
xor.h File 207 B 0644
xor_32.h File 7.31 KB 0644
xor_64.h File 2.5 KB 0644