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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-26 19:45:33 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-26 19:45:33 +0100 |
commit | 89261c57021352045c4af24522c6854c9ee90139 (patch) | |
tree | ad7e2fd28eb7cc6700807b4c6cdc546959563bc8 /arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next (diff) | |
parent | MIPS: math-emu: Write-protect delay slot emulation pages (diff) | |
download | linux-89261c57021352045c4af24522c6854c9ee90139.tar.xz linux-89261c57021352045c4af24522c6854c9ee90139.zip |
Merge tag 'mips_4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Paul Burton:
"Here's the main MIPS pull for Linux 4.21. Core architecture changes
include:
- Syscall tables & definitions for unistd.h are now generated by
scripts, providing greater consistency with other architectures &
making it easier to add new syscalls.
- Support for building kernels with no floating point support, upon
which any userland attempting to use floating point instructions
will receive a SIGILL. Mostly useful to shrink the kernel & as
preparation for nanoMIPS support which does not yet include FP.
- MIPS SIMD Architecture (MSA) vector register context is now exposed
by ptrace via a new NT_MIPS_MSA regset.
- ASIDs are now stored as 64b values even for MIPS32 kernels,
expanding the ASID version field sufficiently that we don't need to
worry about overflow & avoiding rare issues with reused ASIDs that
have been observed in the wild.
- The branch delay slot "emulation" page is now mapped without write
permission for the user, preventing its use as a nice location for
attacks to execute malicious code from.
- Support for ioremap_prot(), primarily to allow gdb or other ptrace
users the ability to view their tracee's memory using the same
cache coherency attribute.
- Optimizations to more cpu_has_* macros, allowing more to be
compile-time constant where possible.
- Enable building the whole kernel with UBSAN instrumentation.
- Enable building the kernel with link-time dead code & data
elimination.
Platform specific changes include:
- The Boston board gains a workaround for DMA prefetching issues with
the EG20T Platform Controller Hub that it uses.
- Cleanups to Cavium Octeon code removing about 20k lines of
redundant code, mostly unused or duplicate register definitions in
headers.
- defconfig updates for the DECstation machines, including new
defconfigs for r4k & 64b machines.
- Further work on Loongson 3 support.
- DMA fixes for SiByte machines"
* tag 'mips_4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (95 commits)
MIPS: math-emu: Write-protect delay slot emulation pages
MIPS: Remove struct mm_context_t fp_mode_switching field
mips: generate uapi header and system call table files
mips: add system call table generation support
mips: remove syscall table entries
mips: add +1 to __NR_syscalls in uapi header
mips: rename scall64-64.S to scall64-n64.S
mips: remove unused macros
mips: add __NR_syscalls along with __NR_Linux_syscalls
MIPS: Expand MIPS32 ASIDs to 64 bits
MIPS: OCTEON: delete redundant register definitions
MIPS: OCTEON: cvmx_gmxx_inf_mode: use oldest forward compatible definition
MIPS: OCTEON: cvmx_mio_fus_dat3: use oldest forward compatible definition
MIPS: OCTEON: cvmx_pko_mem_debug8: use oldest forward compatible definition
MIPS: OCTEON: octeon-usb: use common gpio_bit definition
MIPS: OCTEON: enable all OCTEON drivers in defconfig
mips: annotate implicit fall throughs
MIPS: Hardcode cpu_has_mips* where target ISA allows
MIPS: MT: Remove norps command line parameter
MIPS: Only include mmzone.h when CONFIG_NEED_MULTIPLE_NODES=y
...
Diffstat (limited to 'arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c')
-rw-r--r-- | arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c b/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c index b8898e2b8a6f..e812ed9a03bb 100644 --- a/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c +++ b/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c @@ -449,71 +449,3 @@ int __cvmx_helper_rgmii_link_set(int ipd_port, return result; } - -/** - * Configure a port for internal and/or external loopback. Internal loopback - * causes packets sent by the port to be received by Octeon. External loopback - * causes packets received from the wire to sent out again. - * - * @ipd_port: IPD/PKO port to loopback. - * @enable_internal: - * Non zero if you want internal loopback - * @enable_external: - * Non zero if you want external loopback - * - * Returns Zero on success, negative on failure. - */ -int __cvmx_helper_rgmii_configure_loopback(int ipd_port, int enable_internal, - int enable_external) -{ - int interface = cvmx_helper_get_interface_num(ipd_port); - int index = cvmx_helper_get_interface_index_num(ipd_port); - int original_enable; - union cvmx_gmxx_prtx_cfg gmx_cfg; - union cvmx_asxx_prt_loop asxx_prt_loop; - - /* Read the current enable state and save it */ - gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); - original_enable = gmx_cfg.s.en; - /* Force port to be disabled */ - gmx_cfg.s.en = 0; - if (enable_internal) { - /* Force speed if we're doing internal loopback */ - gmx_cfg.s.duplex = 1; - gmx_cfg.s.slottime = 1; - gmx_cfg.s.speed = 1; - cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 1); - cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x200); - cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0x2000); - } - cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); - - /* Set the loopback bits */ - asxx_prt_loop.u64 = cvmx_read_csr(CVMX_ASXX_PRT_LOOP(interface)); - if (enable_internal) - asxx_prt_loop.s.int_loop |= 1 << index; - else - asxx_prt_loop.s.int_loop &= ~(1 << index); - if (enable_external) - asxx_prt_loop.s.ext_loop |= 1 << index; - else - asxx_prt_loop.s.ext_loop &= ~(1 << index); - cvmx_write_csr(CVMX_ASXX_PRT_LOOP(interface), asxx_prt_loop.u64); - - /* Force enables in internal loopback */ - if (enable_internal) { - uint64_t tmp; - tmp = cvmx_read_csr(CVMX_ASXX_TX_PRT_EN(interface)); - cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(interface), - (1 << index) | tmp); - tmp = cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface)); - cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface), - (1 << index) | tmp); - original_enable = 1; - } - - /* Restore the enable state */ - gmx_cfg.s.en = original_enable; - cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); - return 0; -} |