linux/arch/riscv/include/uapi/asm
Zong Li 38f5bd23de
riscv: Add cache information in AUX vector
There are no standard CSR registers to provide cache information, the
way for RISC-V is to get this information from DT. Currently, AT_L1I_X,
AT_L1D_X and AT_L2_X are present in glibc header, and sysconf syscall
could use them to get information of cache through AUX vector.

The result of 'getconf -a' as follows:
LEVEL1_ICACHE_SIZE                 32768
LEVEL1_ICACHE_ASSOC                8
LEVEL1_ICACHE_LINESIZE             64
LEVEL1_DCACHE_SIZE                 32768
LEVEL1_DCACHE_ASSOC                8
LEVEL1_DCACHE_LINESIZE             64
LEVEL2_CACHE_SIZE                  2097152
LEVEL2_CACHE_ASSOC                 32
LEVEL2_CACHE_LINESIZE              64

Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-09-15 18:46:08 -07:00
..
auxvec.h riscv: Add cache information in AUX vector 2020-09-15 18:46:08 -07:00
bitsperlong.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
bpf_perf_event.h riscv, bpf: Add missing uapi header for BPF_PROG_TYPE_PERF_EVENT programs 2019-12-19 16:03:31 +01:00
byteorder.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
elf.h riscv: clean up the macro format in each header file 2019-11-12 12:04:52 -08:00
hwcap.h riscv: Fix typo in asm/hwcap.h uapi header 2020-07-30 11:37:38 -07:00
Kbuild treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
perf_regs.h riscv: Add support for perf registers sampling 2019-09-05 00:48:58 -07:00
ptrace.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
sigcontext.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
ucontext.h riscv: clean up the macro format in each header file 2019-11-12 12:04:52 -08:00
unistd.h Replace HTTP links with HTTPS ones: RISC-V 2020-07-30 11:37:40 -07:00