__  __    __   __  _____      _            _          _____ _          _ _ 
 |  \/  |   \ \ / / |  __ \    (_)          | |        / ____| |        | | |
 | \  / |_ __\ V /  | |__) | __ ___   ____ _| |_ ___  | (___ | |__   ___| | |
 | |\/| | '__|> <   |  ___/ '__| \ \ / / _` | __/ _ \  \___ \| '_ \ / _ \ | |
 | |  | | |_ / . \  | |   | |  | |\ V / (_| | ||  __/  ____) | | | |  __/ | |
 |_|  |_|_(_)_/ \_\ |_|   |_|  |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_PCI_DMA_H
#define _ASM_S390_PCI_DMA_H

/* I/O Translation Anchor (IOTA) */
enum zpci_ioat_dtype {
	ZPCI_IOTA_STO = 0,
	ZPCI_IOTA_RTTO = 1,
	ZPCI_IOTA_RSTO = 2,
	ZPCI_IOTA_RFTO = 3,
	ZPCI_IOTA_PFAA = 4,
	ZPCI_IOTA_IOPFAA = 5,
	ZPCI_IOTA_IOPTO = 7
};

#define ZPCI_IOTA_IOT_ENABLED		0x800UL
#define ZPCI_IOTA_DT_ST			(ZPCI_IOTA_STO	<< 2)
#define ZPCI_IOTA_DT_RT			(ZPCI_IOTA_RTTO << 2)
#define ZPCI_IOTA_DT_RS			(ZPCI_IOTA_RSTO << 2)
#define ZPCI_IOTA_DT_RF			(ZPCI_IOTA_RFTO << 2)
#define ZPCI_IOTA_DT_PF			(ZPCI_IOTA_PFAA << 2)
#define ZPCI_IOTA_FS_4K			0
#define ZPCI_IOTA_FS_1M			1
#define ZPCI_IOTA_FS_2G			2
#define ZPCI_KEY			(PAGE_DEFAULT_KEY << 5)

#define ZPCI_TABLE_SIZE_RT	(1UL << 42)

#define ZPCI_IOTA_STO_FLAG	(ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_ST)
#define ZPCI_IOTA_RTTO_FLAG	(ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RT)
#define ZPCI_IOTA_RSTO_FLAG	(ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RS)
#define ZPCI_IOTA_RFTO_FLAG	(ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RF)
#define ZPCI_IOTA_RFAA_FLAG	(ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_PF | ZPCI_IOTA_FS_2G)

/* I/O Region and segment tables */
#define ZPCI_INDEX_MASK			0x7ffUL

#define ZPCI_TABLE_TYPE_MASK		0xc
#define ZPCI_TABLE_TYPE_RFX		0xc
#define ZPCI_TABLE_TYPE_RSX		0x8
#define ZPCI_TABLE_TYPE_RTX		0x4
#define ZPCI_TABLE_TYPE_SX		0x0

#define ZPCI_TABLE_LEN_RFX		0x3
#define ZPCI_TABLE_LEN_RSX		0x3
#define ZPCI_TABLE_LEN_RTX		0x3

#define ZPCI_TABLE_OFFSET_MASK		0xc0
#define ZPCI_TABLE_SIZE			0x4000
#define ZPCI_TABLE_ALIGN		ZPCI_TABLE_SIZE
#define ZPCI_TABLE_ENTRY_SIZE		(sizeof(unsigned long))
#define ZPCI_TABLE_ENTRIES		(ZPCI_TABLE_SIZE / ZPCI_TABLE_ENTRY_SIZE)

#define ZPCI_TABLE_BITS			11
#define ZPCI_PT_BITS			8
#define ZPCI_ST_SHIFT			(ZPCI_PT_BITS + PAGE_SHIFT)
#define ZPCI_RT_SHIFT			(ZPCI_ST_SHIFT + ZPCI_TABLE_BITS)

#define ZPCI_RTE_FLAG_MASK		0x3fffUL
#define ZPCI_RTE_ADDR_MASK		(~ZPCI_RTE_FLAG_MASK)
#define ZPCI_STE_FLAG_MASK		0x7ffUL
#define ZPCI_STE_ADDR_MASK		(~ZPCI_STE_FLAG_MASK)

/* I/O Page tables */
#define ZPCI_PTE_VALID_MASK		0x400
#define ZPCI_PTE_INVALID		0x400
#define ZPCI_PTE_VALID			0x000
#define ZPCI_PT_SIZE			0x800
#define ZPCI_PT_ALIGN			ZPCI_PT_SIZE
#define ZPCI_PT_ENTRIES			(ZPCI_PT_SIZE / ZPCI_TABLE_ENTRY_SIZE)
#define ZPCI_PT_MASK			(ZPCI_PT_ENTRIES - 1)

#define ZPCI_PTE_FLAG_MASK		0xfffUL
#define ZPCI_PTE_ADDR_MASK		(~ZPCI_PTE_FLAG_MASK)

/* Shared bits */
#define ZPCI_TABLE_VALID		0x00
#define ZPCI_TABLE_INVALID		0x20
#define ZPCI_TABLE_PROTECTED		0x200
#define ZPCI_TABLE_UNPROTECTED		0x000

#define ZPCI_TABLE_VALID_MASK		0x20
#define ZPCI_TABLE_PROT_MASK		0x200

struct zpci_iommu_ctrs {
	atomic64_t		mapped_pages;
	atomic64_t		unmapped_pages;
	atomic64_t		global_rpcits;
	atomic64_t		sync_map_rpcits;
	atomic64_t		sync_rpcits;
};

struct zpci_dev;

struct zpci_iommu_ctrs *zpci_get_iommu_ctrs(struct zpci_dev *zdev);

#endif

Filemanager

Name Type Size Permission Actions
trace Folder 0755
vdso Folder 0755
Kbuild File 253 B 0644
abs_lowcore.h File 703 B 0644
access-regs.h File 806 B 0644
airq.h File 3.29 KB 0644
alternative.h File 7.2 KB 0644
ap.h File 15.71 KB 0644
appldata.h File 1.57 KB 0644
arch_hweight.h File 1.66 KB 0644
archrandom.h File 947 B 0644
asm-const.h File 376 B 0644
asm-extable.h File 3.29 KB 0644
asm-prototypes.h File 384 B 0644
asm.h File 1.84 KB 0644
atomic.h File 6.61 KB 0644
atomic_ops.h File 7.12 KB 0644
barrier.h File 1.93 KB 0644
bitops.h File 6.69 KB 0644
boot_data.h File 1.62 KB 0644
bug.h File 1.5 KB 0644
cache.h File 389 B 0644
ccwdev.h File 8.33 KB 0644
ccwgroup.h File 2.25 KB 0644
checksum.h File 3.18 KB 0644
chpid.h File 979 B 0644
chsc.h File 1.7 KB 0644
cio.h File 9.01 KB 0644
clocksource.h File 184 B 0644
clp.h File 1.39 KB 0644
cmb.h File 425 B 0644
cmpxchg.h File 6.04 KB 0644
compat.h File 2.78 KB 0644
cpacf.h File 21.03 KB 0644
cpcmd.h File 1.11 KB 0644
cpu.h File 620 B 0644
cpu_mf-insn.h File 478 B 0644
cpu_mf.h File 8.49 KB 0644
cpufeature.h File 464 B 0644
cputime.h File 393 B 0644
crw.h File 1.81 KB 0644
css_chars.h File 904 B 0644
ctlreg.h File 7.82 KB 0644
current.h File 407 B 0644
dat-bits.h File 4.91 KB 0644
debug.h File 14.36 KB 0644
delay.h File 647 B 0644
diag.h File 7.72 KB 0644
dis.h File 636 B 0644
dma-types.h File 2.5 KB 0644
dma.h File 359 B 0644
dwarf.h File 952 B 0644
eadm.h File 2.07 KB 0644
ebcdic.h File 1.4 KB 0644
elf.h File 11.2 KB 0644
entry-common.h File 1.43 KB 0644
exec.h File 269 B 0644
extable.h File 1.88 KB 0644
extmem.h File 1.04 KB 0644
facility.h File 3.41 KB 0644
fault.h File 730 B 0644
fcx.h File 7.96 KB 0644
fprobe.h File 229 B 0644
fpu-insn-asm.h File 15.4 KB 0644
fpu-insn.h File 11.35 KB 0644
fpu-types.h File 1.06 KB 0644
fpu.h File 8.18 KB 0644
ftrace.h File 4.32 KB 0644
ftrace.lds.h File 720 B 0644
futex.h File 2.56 KB 0644
gmap.h File 6.31 KB 0644
hardirq.h File 783 B 0644
hiperdispatch.h File 295 B 0644
hugetlb.h File 2.81 KB 0644
hw_irq.h File 210 B 0644
idals.h File 6.1 KB 0644
idle.h File 614 B 0644
io.h File 2.49 KB 0644
ipl.h File 4.05 KB 0644
irq.h File 2.55 KB 0644
irq_work.h File 204 B 0644
irqflags.h File 2.07 KB 0644
isc.h File 1.01 KB 0644
itcw.h File 950 B 0644
jump_label.h File 1.32 KB 0644
kasan.h File 460 B 0644
kdebug.h File 397 B 0644
kexec.h File 3.17 KB 0644
kfence.h File 1.13 KB 0644
kmsan.h File 1.54 KB 0644
kprobes.h File 2.02 KB 0644
kvm_host.h File 27.71 KB 0644
kvm_para.h File 3.67 KB 0644
linkage.h File 223 B 0644
lowcore.h File 7.22 KB 0644
maccess.h File 564 B 0644
march.h File 722 B 0644
mem_encrypt.h File 304 B 0644
mmu.h File 1.38 KB 0644
mmu_context.h File 3.42 KB 0644
module.h File 1.54 KB 0644
msi.h File 527 B 0644
nmi.h File 3.51 KB 0644
nospec-branch.h File 1.18 KB 0644
nospec-insn.h File 2.43 KB 0644
numa.h File 386 B 0644
os_info.h File 1.67 KB 0644
page-states.h File 1.75 KB 0644
page.h File 6.76 KB 0644
pai.h File 2.03 KB 0644
pci.h File 8.64 KB 0644
pci_clp.h File 5.35 KB 0644
pci_debug.h File 722 B 0644
pci_dma.h File 2.89 KB 0644
pci_insn.h File 3.99 KB 0644
pci_io.h File 4.28 KB 0644
percpu.h File 6.33 KB 0644
perf_event.h File 1.93 KB 0644
pfault.h File 461 B 0644
pgalloc.h File 4.39 KB 0644
pgtable.h File 60.39 KB 0644
physmem_info.h File 4.92 KB 0644
pkey.h File 754 B 0644
pnet.h File 325 B 0644
preempt.h File 3.51 KB 0644
processor.h File 10.96 KB 0644
ptrace.h File 7.56 KB 0644
purgatory.h File 329 B 0644
qdio.h File 9.92 KB 0644
runtime-const.h File 1.92 KB 0644
runtime_instr.h File 634 B 0644
rwonce.h File 691 B 0644
schid.h File 525 B 0644
sclp.h File 4.97 KB 0644
scsw.h File 25.06 KB 0644
seccomp.h File 808 B 0644
sections.h File 1.03 KB 0644
set_memory.h File 2.12 KB 0644
setup.h File 4.8 KB 0644
signal.h File 644 B 0644
sigp.h File 1.87 KB 0644
smp.h File 2.06 KB 0644
softirq_stack.h File 372 B 0644
sparsemem.h File 506 B 0644
spinlock.h File 3.31 KB 0644
spinlock_types.h File 413 B 0644
stacktrace.h File 7.88 KB 0644
stp.h File 1.69 KB 0644
string.h File 5.49 KB 0644
syscall.h File 3.81 KB 0644
syscall_wrapper.h File 4.67 KB 0644
sysinfo.h File 4.33 KB 0644
text-patching.h File 301 B 0644
thread_info.h File 3.74 KB 0644
timex.h File 6.6 KB 0644
tlb.h File 4.68 KB 0644
tlbflush.h File 2.98 KB 0644
topology.h File 2.91 KB 0644
tpi.h File 736 B 0644
types.h File 318 B 0644
uaccess.h File 18.89 KB 0644
unistd.h File 1.01 KB 0644
unwind.h File 3.3 KB 0644
uprobes.h File 588 B 0644
user.h File 3.16 KB 0644
uv.h File 16.12 KB 0644
vdso-symbols.h File 499 B 0644
vdso.h File 326 B 0644
vmalloc.h File 90 B 0644
vmlinux.lds.h File 1.14 KB 0644
vtime.h File 612 B 0644
vtimer.h File 830 B 0644
word-at-a-time.h File 1.52 KB 0644
xor.h File 454 B 0644
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