Final MIPS fixes for 4.15
Some final MIPS fixes for 4.15, including important build fixes and a MAINTAINERS update: - Add myself as MIPS co-maintainer. - Fix various all*config build failures (particularly as a result of switching the default MIPS platform to the "generic" platform). - Fix GCC7 build failures (duplicate const and questionable calls to missing __multi3 intrinsic on mips64r6). - Fix warnings when CPU Idle is enabled (4.14). - Fix AR7 serial output (since 3.17). - Fix ralink platform_get_irq error checking (since 3.12). -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEd80NauSabkiESfLYbAtpk944dnoFAlpiZcsACgkQbAtpk944 dnrjZA/+LOgEap7GeBrtc38PjpG+a2RFbfZ8EOIVWXcUkZmxX7Uf3NMQk5JH/f4H ESgxwHeueorOmRuZm1QJMK1fafwc0ZzMOCXUL+oOXJn5iZ9RRxhSYms0AeQqZ3Sl ueAOxI9qP0YUcHc0CU50csLgZsdz/IMZcp/s8MwNai001HvyThjGLw1BeKPKiwD6 0Yzf5aVhAmUtUy5gSXaI1vNXN97o8XdUb71ivPWJ79mHhvmcDfLjHDoTInhSj5mM DiLtMwRVGOAlPWXG5b63LhDfsRr0XW6zNnwqd5SK06O5jAE48jJkhWVFIqX/U4eh IianE3IAY263TimeLbjcG+poJ4tWAoyvD0c4hirW9Sf8chVrT3nnZ+aegD6YflHg aQjvshg7y8ciKqfSQO2kSA/F/5z0dQcs/63pMTDFv0mrJG5pDi6/EzAez8e20yzO Iyl8O4aQleTyY7Hr3mfiUCT305xU9+cgGEmRquKyI1cPNr4ITuuZBQSlanoPDXdk mLoaK7W+RC78DWVNfmFBvj3ewrExQl/aQZ8MEaFx2tRde9PN8htfvc6YT8aDxHBZ UcBrnc8BjYRtvU75yOmSgaDEg4zfTpwohzlNBcB3qaZbQmOanRiXzmN7o13HCZRr MWd1ELHX4PFhrEOsEsfB0G+ep6hsEyhlVlbHPij5u8lY3JA+iLM= =rHbt -----END PGP SIGNATURE----- Merge tag 'mips_fixes_4.15_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips Pull MIPS fixes from James Hogan: "Some final MIPS fixes for 4.15, including important build fixes and a MAINTAINERS update: - Add myself as MIPS co-maintainer. - Fix various all*config build failures (particularly as a result of switching the default MIPS platform to the "generic" platform). - Fix GCC7 build failures (duplicate const and questionable calls to missing __multi3 intrinsic on mips64r6). - Fix warnings when CPU Idle is enabled (4.14). - Fix AR7 serial output (since 3.17). - Fix ralink platform_get_irq error checking (since 3.12)" * tag 'mips_fixes_4.15_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips: MAINTAINERS: Add James as MIPS co-maintainer MIPS: Fix undefined reference to physical_memsize MIPS: Implement __multi3 for GCC7 MIPS64r6 builds MIPS: mm: Fix duplicate "const" on insn_table_MM MIPS: CM: Drop WARN_ON(vp != 0) MIPS: ralink: Fix platform_get_irq's error checking MIPS: Fix CPS SMP NS16550 UART defaults MIPS: BCM47XX Avoid compile error with MIPS allnoconfig MIPS: RB532: Avoid undefined mac_pton without GENERIC_NET_UTILS MIPS: RB532: Avoid undefined early_serial_setup() without SERIAL_8250_CONSOLE MIPS: ath25: Avoid undefined early_serial_setup() without SERIAL_8250_CONSOLE MIPS: AR7: ensure the port type's FCR value is used
This commit is contained in:
Коммит
e6252e7f58
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@ -9085,6 +9085,7 @@ F: drivers/usb/image/microtek.*
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MIPS
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M: Ralf Baechle <ralf@linux-mips.org>
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M: James Hogan <jhogan@kernel.org>
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L: linux-mips@linux-mips.org
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W: http://www.linux-mips.org/
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T: git git://git.linux-mips.org/pub/scm/ralf/linux.git
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@ -259,6 +259,7 @@ config BCM47XX
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select LEDS_GPIO_REGISTER
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select BCM47XX_NVRAM
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select BCM47XX_SPROM
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select BCM47XX_SSB if !BCM47XX_BCMA
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help
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Support for BCM47XX based boards
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@ -389,6 +390,7 @@ config LANTIQ
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select SYS_SUPPORTS_32BIT_KERNEL
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select SYS_SUPPORTS_MIPS16
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select SYS_SUPPORTS_MULTITHREADING
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select SYS_SUPPORTS_VPE_LOADER
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select SYS_HAS_EARLY_PRINTK
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select GPIOLIB
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select SWAP_IO_SPACE
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@ -516,6 +518,7 @@ config MIPS_MALTA
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select SYS_SUPPORTS_MIPS16
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select SYS_SUPPORTS_MULTITHREADING
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select SYS_SUPPORTS_SMARTMIPS
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select SYS_SUPPORTS_VPE_LOADER
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select SYS_SUPPORTS_ZBOOT
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select SYS_SUPPORTS_RELOCATABLE
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select USE_OF
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@ -2281,9 +2284,16 @@ config MIPSR2_TO_R6_EMULATOR
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The only reason this is a build-time option is to save ~14K from the
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final kernel image.
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config SYS_SUPPORTS_VPE_LOADER
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bool
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depends on SYS_SUPPORTS_MULTITHREADING
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help
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Indicates that the platform supports the VPE loader, and provides
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physical_memsize.
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config MIPS_VPE_LOADER
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bool "VPE loader support."
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depends on SYS_SUPPORTS_MULTITHREADING && MODULES
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depends on SYS_SUPPORTS_VPE_LOADER && MODULES
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select CPU_MIPSR2_IRQ_VI
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select CPU_MIPSR2_IRQ_EI
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select MIPS_MT
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@ -124,30 +124,36 @@ config SCACHE_DEBUGFS
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If unsure, say N.
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menuconfig MIPS_CPS_NS16550
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menuconfig MIPS_CPS_NS16550_BOOL
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bool "CPS SMP NS16550 UART output"
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depends on MIPS_CPS
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help
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Output debug information via an ns16550 compatible UART if exceptions
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occur early in the boot process of a secondary core.
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if MIPS_CPS_NS16550
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if MIPS_CPS_NS16550_BOOL
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config MIPS_CPS_NS16550
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def_bool MIPS_CPS_NS16550_BASE != 0
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config MIPS_CPS_NS16550_BASE
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hex "UART Base Address"
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default 0x1b0003f8 if MIPS_MALTA
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default 0
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help
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The base address of the ns16550 compatible UART on which to output
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debug information from the early stages of core startup.
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This is only used if non-zero.
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config MIPS_CPS_NS16550_SHIFT
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int "UART Register Shift"
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default 0 if MIPS_MALTA
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default 0
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help
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The number of bits to shift ns16550 register indices by in order to
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form their addresses. That is, log base 2 of the span between
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adjacent ns16550 registers in the system.
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endif # MIPS_CPS_NS16550
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endif # MIPS_CPS_NS16550_BOOL
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endmenu
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@ -575,7 +575,7 @@ static int __init ar7_register_uarts(void)
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uart_port.type = PORT_AR7;
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uart_port.uartclk = clk_get_rate(bus_clk) / 2;
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uart_port.iotype = UPIO_MEM32;
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uart_port.flags = UPF_FIXED_TYPE;
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uart_port.flags = UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF;
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uart_port.regshift = 2;
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uart_port.line = 0;
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@ -73,6 +73,7 @@ const char *get_system_type(void)
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void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk)
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{
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#ifdef CONFIG_SERIAL_8250_CONSOLE
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struct uart_port s;
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memset(&s, 0, sizeof(s));
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s.uartclk = uartclk;
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early_serial_setup(&s);
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#endif /* CONFIG_SERIAL_8250_CONSOLE */
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}
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int __init ath25_add_wmac(int nr, u32 base, int irq)
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@ -292,7 +292,6 @@ void mips_cm_lock_other(unsigned int cluster, unsigned int core,
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*this_cpu_ptr(&cm_core_lock_flags));
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} else {
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WARN_ON(cluster != 0);
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WARN_ON(vp != 0);
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WARN_ON(block != CM_GCR_Cx_OTHER_BLOCK_LOCAL);
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/*
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@ -16,4 +16,5 @@ obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o
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obj-$(CONFIG_CPU_TX39XX) += r3k_dump_tlb.o
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# libgcc-style stuff needed in the kernel
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obj-y += ashldi3.o ashrdi3.o bswapsi.o bswapdi.o cmpdi2.o lshrdi3.o ucmpdi2.o
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obj-y += ashldi3.o ashrdi3.o bswapsi.o bswapdi.o cmpdi2.o lshrdi3.o multi3.o \
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ucmpdi2.o
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@ -10,10 +10,18 @@ typedef int word_type __attribute__ ((mode (__word__)));
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struct DWstruct {
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int high, low;
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};
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struct TWstruct {
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long long high, low;
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};
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#elif defined(__LITTLE_ENDIAN)
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struct DWstruct {
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int low, high;
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};
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struct TWstruct {
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long long low, high;
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};
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#else
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#error I feel sick.
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#endif
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long long ll;
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} DWunion;
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#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPSR6)
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typedef int ti_type __attribute__((mode(TI)));
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typedef union {
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struct TWstruct s;
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ti_type ti;
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} TWunion;
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#endif
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#endif /* __ASM_LIBGCC_H */
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@ -0,0 +1,54 @@
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/export.h>
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#include "libgcc.h"
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/*
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* GCC 7 suboptimally generates __multi3 calls for mips64r6, so for that
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* specific case only we'll implement it here.
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*
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* See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82981
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*/
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#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPSR6) && (__GNUC__ == 7)
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/* multiply 64-bit values, low 64-bits returned */
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static inline long long notrace dmulu(long long a, long long b)
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{
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long long res;
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asm ("dmulu %0,%1,%2" : "=r" (res) : "r" (a), "r" (b));
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return res;
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}
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/* multiply 64-bit unsigned values, high 64-bits of 128-bit result returned */
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static inline long long notrace dmuhu(long long a, long long b)
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{
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long long res;
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asm ("dmuhu %0,%1,%2" : "=r" (res) : "r" (a), "r" (b));
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return res;
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}
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/* multiply 128-bit values, low 128-bits returned */
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ti_type notrace __multi3(ti_type a, ti_type b)
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{
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TWunion res, aa, bb;
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aa.ti = a;
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bb.ti = b;
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/*
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* a * b = (a.lo * b.lo)
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* + 2^64 * (a.hi * b.lo + a.lo * b.hi)
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* [+ 2^128 * (a.hi * b.hi)]
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*/
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res.s.low = dmulu(aa.s.low, bb.s.low);
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res.s.high = dmuhu(aa.s.low, bb.s.low);
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res.s.high += dmulu(aa.s.high, bb.s.low);
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res.s.high += dmulu(aa.s.low, bb.s.high);
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return res.ti;
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}
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EXPORT_SYMBOL(__multi3);
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#endif /* 64BIT && CPU_MIPSR6 && GCC7 */
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@ -40,7 +40,7 @@
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#include "uasm.c"
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static const struct insn const insn_table_MM[insn_invalid] = {
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static const struct insn insn_table_MM[insn_invalid] = {
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[insn_addu] = {M(mm_pool32a_op, 0, 0, 0, 0, mm_addu32_op), RT | RS | RD},
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[insn_addiu] = {M(mm_addiu32_op, 0, 0, 0, 0, 0), RT | RS | SIMM},
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[insn_and] = {M(mm_pool32a_op, 0, 0, 0, 0, mm_and_op), RT | RS | RD},
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@ -109,9 +109,9 @@ static int rt_timer_probe(struct platform_device *pdev)
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}
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rt->irq = platform_get_irq(pdev, 0);
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if (!rt->irq) {
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if (rt->irq < 0) {
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dev_err(&pdev->dev, "failed to load irq\n");
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return -ENOENT;
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return rt->irq;
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}
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rt->membase = devm_ioremap_resource(&pdev->dev, res);
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@ -2,4 +2,6 @@
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# Makefile for the RB532 board specific parts of the kernel
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#
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obj-y += irq.o time.o setup.o serial.o prom.o gpio.o devices.o
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obj-$(CONFIG_SERIAL_8250_CONSOLE) += serial.o
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obj-y += irq.o time.o setup.o prom.o gpio.o devices.o
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@ -310,6 +310,8 @@ static int __init plat_setup_devices(void)
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return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs));
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}
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#ifdef CONFIG_NET
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static int __init setup_kmac(char *s)
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{
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printk(KERN_INFO "korina mac = %s\n", s);
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__setup("kmac=", setup_kmac);
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#endif /* CONFIG_NET */
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arch_initcall(plat_setup_devices);
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