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
  ...

1 files changed, 3 insertions, 88 deletions

diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper.c b/arch/mips/cavium-octeon/executive/cvmx-helper.c
index 6c79e8a16a26..a76bbcc30f95 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper.c
@@ -46,26 +46,6 @@
 #include <asm/octeon/cvmx-smix-defs.h>
 #include <asm/octeon/cvmx-asxx-defs.h>
 
-/**
- * cvmx_override_pko_queue_priority(int ipd_port, uint64_t
- * priorities[16]) is a function pointer. It is meant to allow
- * customization of the PKO queue priorities based on the port
- * number. Users should set this pointer to a function before
- * calling any cvmx-helper operations.
- */
-void (*cvmx_override_pko_queue_priority) (int pko_port,
-					  uint64_t priorities[16]);
-
-/**
- * cvmx_override_ipd_port_setup(int ipd_port) is a function
- * pointer. It is meant to allow customization of the IPD port
- * setup before packet input/output comes online. It is called
- * after cvmx-helper does the default IPD configuration, but
- * before IPD is enabled. Users should set this pointer to a
- * function before calling any cvmx-helper operations.
- */
-void (*cvmx_override_ipd_port_setup) (int ipd_port);
-
 /* Port count per interface */
 static int interface_port_count[9];
 
@@ -238,7 +218,7 @@ static cvmx_helper_interface_mode_t __cvmx_get_mode_octeon2(int interface)
 	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
 
 	if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
-		switch (mode.cn63xx.mode) {
+		switch (mode.cn61xx.mode) {
 		case 0:
 			return CVMX_HELPER_INTERFACE_MODE_SGMII;
 		case 1:
@@ -362,7 +342,7 @@ cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int interface)
 	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
 
 	if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
-		switch (mode.cn56xx.mode) {
+		switch (mode.cn52xx.mode) {
 		case 0:
 			return CVMX_HELPER_INTERFACE_MODE_DISABLED;
 		case 1:
@@ -436,10 +416,6 @@ static int __cvmx_helper_port_setup_ipd(int ipd_port)
 
 	cvmx_pip_config_port(ipd_port, port_config, tag_config);
 
-	/* Give the user a chance to override our setting for each port */
-	if (cvmx_override_ipd_port_setup)
-		cvmx_override_ipd_port_setup(ipd_port);
-
 	return 0;
 }
 
@@ -663,13 +639,6 @@ static int __cvmx_helper_interface_setup_pko(int interface)
 	int ipd_port = cvmx_helper_get_ipd_port(interface, 0);
 	int num_ports = interface_port_count[interface];
 	while (num_ports--) {
-		/*
-		 * Give the user a chance to override the per queue
-		 * priorities.
-		 */
-		if (cvmx_override_pko_queue_priority)
-			cvmx_override_pko_queue_priority(ipd_port, priorities);
-
 		cvmx_pko_config_port(ipd_port,
 				     cvmx_pko_get_base_queue_per_core(ipd_port,
 								      0),
@@ -818,7 +787,7 @@ static int __cvmx_helper_packet_hardware_enable(int interface)
  * Returns 0 on success
  *	   !0 on failure
  */
-int __cvmx_helper_errata_fix_ipd_ptr_alignment(void)
+static int __cvmx_helper_errata_fix_ipd_ptr_alignment(void)
 {
 #define FIX_IPD_FIRST_BUFF_PAYLOAD_BYTES \
      (CVMX_FPA_PACKET_POOL_SIZE-8-CVMX_HELPER_FIRST_MBUFF_SKIP)
@@ -1239,57 +1208,3 @@ int cvmx_helper_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
 	return result;
 }
 EXPORT_SYMBOL_GPL(cvmx_helper_link_set);
-
-/**
- * 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_configure_loopback(int ipd_port, int enable_internal,
-				   int enable_external)
-{
-	int result = -1;
-	int interface = cvmx_helper_get_interface_num(ipd_port);
-	int index = cvmx_helper_get_interface_index_num(ipd_port);
-
-	if (index >= cvmx_helper_ports_on_interface(interface))
-		return -1;
-
-	switch (cvmx_helper_interface_get_mode(interface)) {
-	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
-	case CVMX_HELPER_INTERFACE_MODE_PCIE:
-	case CVMX_HELPER_INTERFACE_MODE_SPI:
-	case CVMX_HELPER_INTERFACE_MODE_NPI:
-	case CVMX_HELPER_INTERFACE_MODE_LOOP:
-		break;
-	case CVMX_HELPER_INTERFACE_MODE_XAUI:
-		result =
-		    __cvmx_helper_xaui_configure_loopback(ipd_port,
-							  enable_internal,
-							  enable_external);
-		break;
-	case CVMX_HELPER_INTERFACE_MODE_RGMII:
-	case CVMX_HELPER_INTERFACE_MODE_GMII:
-		result =
-		    __cvmx_helper_rgmii_configure_loopback(ipd_port,
-							   enable_internal,
-							   enable_external);
-		break;
-	case CVMX_HELPER_INTERFACE_MODE_SGMII:
-	case CVMX_HELPER_INTERFACE_MODE_PICMG:
-		result =
-		    __cvmx_helper_sgmii_configure_loopback(ipd_port,
-							   enable_internal,
-							   enable_external);
-		break;
-	}
-	return result;
-}