Michal Meloun 95a85c125d Add NetBSD compatible bus_space_peek_N() and bus_space_poke_N() functions. ... One problem with the bus_space_read_N() and bus_space_write_N() family of functions is that they provide no protection against exceptions which can occur when no physical hardware or device responds to the read or write cycles. In such a situation, the system typically would panic due to a kernel-mode bus error. The bus_space_peek_N() and bus_space_poke_N() family of functions provide a mechanism to handle these exceptions gracefully without the risk of crashing the system. Typical example is access to PCI(e) configuration space in bus enumeration function on badly implemented PCI(e) root complexes (RK3399 or Neoverse N1 N1SDP and/or access to PCI(e) register when device is in deep sleep state. This commit adds a real implementation for arm64 only. The remaining architectures have bus_space_peek()/bus_space_poke() emulated by using bus_space_read()/bus_space_write() (without exception handling). MFC after: 1 month Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D25371		2020-09-19 11:06:41 +00:00
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_align.h
_bus.h
_inttypes.h
_limits.h
_stdint.h
_types.h
asm.h
atomic.h	riscv: clean up empty lines in .c and .h files	2020-09-01 21:21:03 +00:00
bus_dma_impl.h
bus_dma.h
bus.h	Add NetBSD compatible bus_space_peek_N() and bus_space_poke_N() functions.	2020-09-19 11:06:41 +00:00
clock.h
counter.h
cpu.h
cpufunc.h
db_machdep.h
dump.h
efi.h
elf.h
encoding.h
endian.h
exec.h
float.h
floatingpoint.h
fpe.h
frame.h
ieeefp.h	libc: Provide sub fp(s|g)etmask() implementations for RISC-V	2020-08-03 12:48:51 +00:00
in_cksum.h
intr.h
kdb.h
machdep.h	Handle load from loader(8)	2020-06-24 15:20:00 +00:00
md_var.h
memdev.h	Add the MEM_EXTRACT_PADDR ioctl to /dev/mem.	2020-09-02 18:12:47 +00:00
metadata.h	RISC-V boot1.efi and loader.efi support	2020-07-06 18:19:42 +00:00
minidump.h
ofw_machdep.h
param.h	Improve MACHINE_ARCH handling for hard vs soft-float on RISC-V.	2020-04-27 17:55:40 +00:00
pcb.h
pcpu_aux.h	Correct padding length for RISC-V PCPU data.	2020-08-12 18:45:36 +00:00
pcpu.h	Correct padding length for RISC-V PCPU data.	2020-08-12 18:45:36 +00:00
pmap.h
pmc_mdep.h
proc.h
procctl.h
profile.h	riscv: fix uintfptr_t	2020-08-05 22:09:40 +00:00
psl.h
pte.h	riscv pmap: zero reserved pte bits in ppn	2020-07-01 19:15:43 +00:00
ptrace.h
reg.h
reloc.h
resource.h
riscvreg.h
runq.h
sbi.h	Add support for HSM SBI extension	2020-05-01 21:55:51 +00:00
setjmp.h
sf_buf.h
sigframe.h
signal.h
smp.h
stack.h	Use uintptr_t instead of uint64_t for pointers in stack frames.	2020-08-12 20:29:49 +00:00
stdarg.h
sysarch.h
trap.h
ucontext.h
vdso.h
vm.h
vmparam.h	Add macros simplifying the fake preload setup	2020-05-28 14:56:11 +00:00