/* 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 static inline unsigned int calc_rtx(dma_addr_t ptr) { return ((unsigned long) ptr >> ZPCI_RT_SHIFT) & ZPCI_INDEX_MASK; } static inline unsigned int calc_sx(dma_addr_t ptr) { return ((unsigned long) ptr >> ZPCI_ST_SHIFT) & ZPCI_INDEX_MASK; } static inline unsigned int calc_px(dma_addr_t ptr) { return ((unsigned long) ptr >> PAGE_SHIFT) & ZPCI_PT_MASK; } static inline void set_pt_pfaa(unsigned long *entry, void *pfaa) { *entry &= ZPCI_PTE_FLAG_MASK; *entry |= ((unsigned long) pfaa & ZPCI_PTE_ADDR_MASK); } static inline void set_rt_sto(unsigned long *entry, void *sto) { *entry &= ZPCI_RTE_FLAG_MASK; *entry |= ((unsigned long) sto & ZPCI_RTE_ADDR_MASK); *entry |= ZPCI_TABLE_TYPE_RTX; } static inline void set_st_pto(unsigned long *entry, void *pto) { *entry &= ZPCI_STE_FLAG_MASK; *entry |= ((unsigned long) pto & ZPCI_STE_ADDR_MASK); *entry |= ZPCI_TABLE_TYPE_SX; } static inline void validate_rt_entry(unsigned long *entry) { *entry &= ~ZPCI_TABLE_VALID_MASK; *entry &= ~ZPCI_TABLE_OFFSET_MASK; *entry |= ZPCI_TABLE_VALID; *entry |= ZPCI_TABLE_LEN_RTX; } static inline void validate_st_entry(unsigned long *entry) { *entry &= ~ZPCI_TABLE_VALID_MASK; *entry |= ZPCI_TABLE_VALID; } static inline void invalidate_table_entry(unsigned long *entry) { *entry &= ~ZPCI_TABLE_VALID_MASK; *entry |= ZPCI_TABLE_INVALID; } static inline void invalidate_pt_entry(unsigned long *entry) { WARN_ON_ONCE((*entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_INVALID); *entry &= ~ZPCI_PTE_VALID_MASK; *entry |= ZPCI_PTE_INVALID; } static inline void validate_pt_entry(unsigned long *entry) { WARN_ON_ONCE((*entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID); *entry &= ~ZPCI_PTE_VALID_MASK; *entry |= ZPCI_PTE_VALID; } static inline void entry_set_protected(unsigned long *entry) { *entry &= ~ZPCI_TABLE_PROT_MASK; *entry |= ZPCI_TABLE_PROTECTED; } static inline void entry_clr_protected(unsigned long *entry) { *entry &= ~ZPCI_TABLE_PROT_MASK; *entry |= ZPCI_TABLE_UNPROTECTED; } static inline int reg_entry_isvalid(unsigned long entry) { return (entry & ZPCI_TABLE_VALID_MASK) == ZPCI_TABLE_VALID; } static inline int pt_entry_isvalid(unsigned long entry) { return (entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID; } static inline int entry_isprotected(unsigned long entry) { return (entry & ZPCI_TABLE_PROT_MASK) == ZPCI_TABLE_PROTECTED; } static inline unsigned long *get_rt_sto(unsigned long entry) { return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_RTX) ? (unsigned long *) (entry & ZPCI_RTE_ADDR_MASK) : NULL; } static inline unsigned long *get_st_pto(unsigned long entry) { return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_SX) ? (unsigned long *) (entry & ZPCI_STE_ADDR_MASK) : NULL; } /* Prototypes */ int zpci_dma_init_device(struct zpci_dev *); void zpci_dma_exit_device(struct zpci_dev *); void dma_free_seg_table(unsigned long); unsigned long *dma_alloc_cpu_table(void); void dma_cleanup_tables(unsigned long *); unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr); void dma_update_cpu_trans(unsigned long *entry, void *page_addr, int flags); #endif
Name | Type | Size | Permission | Actions |
---|---|---|---|---|
fpu | Folder | 0755 |
|
|
trace | Folder | 0755 |
|
|
Kbuild | File | 557 B | 0644 |
|
airq.h | File | 3.02 KB | 0644 |
|
alternative-asm.h | File | 3.07 KB | 0644 |
|
alternative.h | File | 4.99 KB | 0644 |
|
ap.h | File | 9.9 KB | 0644 |
|
appldata.h | File | 1.54 KB | 0644 |
|
archrandom.h | File | 1.1 KB | 0644 |
|
asm-prototypes.h | File | 227 B | 0644 |
|
atomic.h | File | 5.1 KB | 0644 |
|
atomic_ops.h | File | 4.02 KB | 0644 |
|
barrier.h | File | 1.84 KB | 0644 |
|
bitops.h | File | 10.13 KB | 0644 |
|
bug.h | File | 1.49 KB | 0644 |
|
bugs.h | File | 441 B | 0644 |
|
cache.h | File | 387 B | 0644 |
|
ccwdev.h | File | 7.99 KB | 0644 |
|
ccwgroup.h | File | 2.53 KB | 0644 |
|
checksum.h | File | 3.24 KB | 0644 |
|
chpid.h | File | 974 B | 0644 |
|
cio.h | File | 8.01 KB | 0644 |
|
clp.h | File | 1.32 KB | 0644 |
|
cmb.h | File | 425 B | 0644 |
|
cmpxchg.h | File | 1.76 KB | 0644 |
|
compat.h | File | 7.9 KB | 0644 |
|
cpacf.h | File | 16.8 KB | 0644 |
|
cpcmd.h | File | 1.11 KB | 0644 |
|
cpu.h | File | 549 B | 0644 |
|
cpu_mf.h | File | 8.99 KB | 0644 |
|
cpufeature.h | File | 963 B | 0644 |
|
cputime.h | File | 805 B | 0644 |
|
crw.h | File | 1.86 KB | 0644 |
|
css_chars.h | File | 769 B | 0644 |
|
ctl_reg.h | File | 2.89 KB | 0644 |
|
current.h | File | 405 B | 0644 |
|
debug.h | File | 8.1 KB | 0644 |
|
delay.h | File | 721 B | 0644 |
|
diag.h | File | 5.94 KB | 0644 |
|
dis.h | File | 637 B | 0644 |
|
dma-mapping.h | File | 621 B | 0644 |
|
dma.h | File | 456 B | 0644 |
|
eadm.h | File | 2.03 KB | 0644 |
|
ebcdic.h | File | 1.41 KB | 0644 |
|
elf.h | File | 10.36 KB | 0644 |
|
exec.h | File | 269 B | 0644 |
|
extable.h | File | 875 B | 0644 |
|
extmem.h | File | 804 B | 0644 |
|
facility.h | File | 2.44 KB | 0644 |
|
fcx.h | File | 7.91 KB | 0644 |
|
ftrace.h | File | 1.66 KB | 0644 |
|
futex.h | File | 2.07 KB | 0644 |
|
gmap.h | File | 4.93 KB | 0644 |
|
hardirq.h | File | 670 B | 0644 |
|
hugetlb.h | File | 2.82 KB | 0644 |
|
hw_irq.h | File | 249 B | 0644 |
|
idals.h | File | 5.22 KB | 0644 |
|
idle.h | File | 709 B | 0644 |
|
io.h | File | 2.03 KB | 0644 |
|
ipl.h | File | 3.6 KB | 0644 |
|
irq.h | File | 2.55 KB | 0644 |
|
irqflags.h | File | 1.76 KB | 0644 |
|
isc.h | File | 1000 B | 0644 |
|
itcw.h | File | 950 B | 0644 |
|
jump_label.h | File | 1.36 KB | 0644 |
|
kdebug.h | File | 386 B | 0644 |
|
kexec.h | File | 1.32 KB | 0644 |
|
kprobes.h | File | 2.24 KB | 0644 |
|
kvm_host.h | File | 22.24 KB | 0644 |
|
kvm_para.h | File | 5.78 KB | 0644 |
|
linkage.h | File | 633 B | 0644 |
|
livepatch.h | File | 461 B | 0644 |
|
lowcore.h | File | 6.29 KB | 0644 |
|
mmu.h | File | 1.19 KB | 0644 |
|
mmu_context.h | File | 3.84 KB | 0644 |
|
mmzone.h | File | 316 B | 0644 |
|
module.h | File | 802 B | 0644 |
|
nmi.h | File | 3.44 KB | 0644 |
|
nospec-branch.h | File | 342 B | 0644 |
|
nospec-insn.h | File | 3.81 KB | 0644 |
|
numa.h | File | 730 B | 0644 |
|
os_info.h | File | 1.1 KB | 0644 |
|
page-states.h | File | 486 B | 0644 |
|
page.h | File | 5.12 KB | 0644 |
|
pci.h | File | 6.26 KB | 0644 |
|
pci_clp.h | File | 4.25 KB | 0644 |
|
pci_debug.h | File | 608 B | 0644 |
|
pci_dma.h | File | 5.7 KB | 0644 |
|
pci_insn.h | File | 2.59 KB | 0644 |
|
pci_io.h | File | 4.58 KB | 0644 |
|
percpu.h | File | 6.43 KB | 0644 |
|
perf_event.h | File | 2.71 KB | 0644 |
|
pgalloc.h | File | 4.32 KB | 0644 |
|
pgtable.h | File | 47.7 KB | 0644 |
|
pkey.h | File | 4.23 KB | 0644 |
|
preempt.h | File | 3.25 KB | 0644 |
|
processor.h | File | 10.42 KB | 0644 |
|
ptrace.h | File | 5.27 KB | 0644 |
|
qdio.h | File | 11.67 KB | 0644 |
|
reset.h | File | 471 B | 0644 |
|
runtime_instr.h | File | 1.76 KB | 0644 |
|
schid.h | File | 525 B | 0644 |
|
sclp.h | File | 3.38 KB | 0644 |
|
scsw.h | File | 24.1 KB | 0644 |
|
seccomp.h | File | 516 B | 0644 |
|
sections.h | File | 155 B | 0644 |
|
segment.h | File | 93 B | 0644 |
|
serial.h | File | 147 B | 0644 |
|
set_memory.h | File | 779 B | 0644 |
|
setup.h | File | 4.44 KB | 0644 |
|
shmparam.h | File | 285 B | 0644 |
|
signal.h | File | 644 B | 0644 |
|
sigp.h | File | 1.8 KB | 0644 |
|
smp.h | File | 2.45 KB | 0644 |
|
sparsemem.h | File | 214 B | 0644 |
|
spinlock.h | File | 3.53 KB | 0644 |
|
spinlock_types.h | File | 437 B | 0644 |
|
stp.h | File | 1.26 KB | 0644 |
|
string.h | File | 4.5 KB | 0644 |
|
switch_to.h | File | 1.37 KB | 0644 |
|
syscall.h | File | 2.63 KB | 0644 |
|
sysinfo.h | File | 4.22 KB | 0644 |
|
termios.h | File | 685 B | 0644 |
|
thread_info.h | File | 3.15 KB | 0644 |
|
timex.h | File | 6.15 KB | 0644 |
|
tlb.h | File | 5.71 KB | 0644 |
|
tlbflush.h | File | 3.52 KB | 0644 |
|
topology.h | File | 2.69 KB | 0644 |
|
uaccess.h | File | 6.57 KB | 0644 |
|
unistd.h | File | 1.03 KB | 0644 |
|
uprobes.h | File | 588 B | 0644 |
|
user.h | File | 3.3 KB | 0644 |
|
vdso.h | File | 1.8 KB | 0644 |
|
vga.h | File | 170 B | 0644 |
|
vtime.h | File | 182 B | 0644 |
|
vtimer.h | File | 866 B | 0644 |
|
vx-insn.h | File | 10.66 KB | 0644 |
|
xor.h | File | 454 B | 0644 |
|