- 07 May, 2020 6 commits
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Geert Uytterhoeven authored
The JZ4740 setup code is not a clock provider, and just needs to call of_clk_init(). Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>. Fixes: f932449c ("MIPS: ingenic: Drop obsolete code, merge the rest in setup.c") Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Paul Cercueil <paul@crapouillou.net> Signed-off-by:
Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Liangliang Huang authored
Convert the various /* fallthrough */ comments to the pseudo-keyword fallthrough; Done via script: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe@perches.com/Signed-off-by:
Liangliang Huang <huangll@lemote.com> Reviewed-by:
Huacai Chen <chenhc@lemote.com> Signed-off-by:
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Jiaxun Yang authored
LLD failed to link vmlinux with 64bit load address for 32bit ELF while bfd will strip 64bit address into 32bit silently. To fix LLD build, we should truncate load address provided by platform into 32bit for 32bit kernel. Signed-off-by:
Jiaxun Yang <jiaxun.yang@flygoat.com> Link: https://github.com/ClangBuiltLinux/linux/issues/786 Link: https://sourceware.org/bugzilla/show_bug.cgi?id=25784Reviewed-by:
Fangrui Song <maskray@google.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Tested-by:
Nathan Chancellor <natechancellor@gmail.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Tested-by:
Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
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Jason Yan authored
This code has been marked dead for more than 10 years. Seems no need to keep it now. Signed-off-by:
Jason Yan <yanaijie@huawei.com> Signed-off-by:
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Jason Yan authored
This code has been marked dead since the beginning of the git history. Seems no need to keep it now. Signed-off-by:
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Jason Yan authored
This code has been marked dead for more than 10 years. Seems no need to keep it now. Signed-off-by:
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- 04 May, 2020 1 commit
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Tiezhu Yang authored
Just move "returns" after "loongson3-llsc-check", no function changes. Signed-off-by:
Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by:
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- 02 May, 2020 3 commits
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Huacai Chen authored
The last branch of switch-case doesn't need a "fallthrough" pseudo keyword, and it will cause errors when building a kernel with -Werror: arch/mips/kernel/perf_event_mipsxx.c: In function 'reset_counters': include/linux/compiler_attributes.h:200:41: error: attribute 'fallthrough' not preceding a case label or default label [-Werror] 200 | # define fallthrough __attribute__((__fallthrough__)) | ^~~~~~~~~~~~~ >> arch/mips/kernel/perf_event_mipsxx.c:932:3: note: in expansion of macro 'fallthrough' 932 | fallthrough; | ^~~~~~~~~~~ arch/mips/kernel/perf_event_mipsxx.c: In function 'loongson3_reset_counters': include/linux/compiler_attributes.h:200:41: error: attribute 'fallthrough' not preceding a case label or default label [-Werror] 200 | # define fallthrough __attribute__((__fallthrough__)) | ^~~~~~~~~~~~~ arch/mips/kernel/perf_event_mipsxx.c:903:3: note: in expansion of macro 'fallthrough' 903 | fallthrough; | ^~~~~~~~~~~ cc1: all warnings being treated as errors Fix it by removing unnecessary "fallthrough" pseudo keywords. Fixes: e9dfbaae ("MIPS: perf: Add hardware perf events support for new Loongson-3") Reported-by:kbuild test robot <lkp@intel.com> Signed-off-by:
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Bin Meng authored
Drop CONFIG_MTD_M25P80 that was removed in commit b35b9a10 ("mtd: spi-nor: Move m25p80 code in spi-nor.c") Signed-off-by:
Bin Meng <bin.meng@windriver.com> Signed-off-by:
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Jiaxun Yang authored
Huacai just informed me that some early Loongson-3A2000 had wrong TLB type in Config0 register. That means we have to correct it via PRID. It looks like I shoudn't drop MIPS_CPU_FTLB flag in PRID case for Loongson-3 Classic. Fixes: da1bd297 ("MIPS: Loongson64: Probe CPU features via CPUCFG") Signed-off-by:
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- 30 Apr, 2020 3 commits
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Jiaxun Yang authored
CPUCFG is a Loongson self-defined instruction used to mark CPU features for Loongson processors started from Loongson-3A4000. Slightly adjust cpu_probe_loongson function as well. Remove features that already probed via decode_configs in processor's PRID case and add a comment about TLBINV. Signed-off-by:
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Huacai Chen authored
New Loongson-3 means Loongson-3A R2 (Loongson-3A2000) and newer CPUs. Loongson-3 processors have three types of PMU types (so there are three event maps): Loongson-3A1000/Loonngson-3B1000/Loongson-3B1500 is Type-1, Loongson-3A2000/Loongson-3A3000 is Type-2, Loongson-3A4000+ is Type-3. Signed-off-by:
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Tiezhu Yang authored
It is better to show the result before loongson3-llsc-check exit, otherwise we can see nothing if the return status is EXIT_SUCCESS, it seems confusing. E.g. without this patch: [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux [loongson@localhost tools]$ With this patch: [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux loongson3-llsc-check returns success [loongson@localhost tools]$ Signed-off-by:
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- 29 Apr, 2020 9 commits
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Paul Cercueil authored
Drop a bootload of 10-years-old dirty code, that is not used anymore, as it has been replaced with clean code over the ages. Merge the very few bits left inside setup.c, so that everything is clean and tidy now. Signed-off-by:
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Paul Cercueil authored
Enable support for the new hardware that was added in the devicetree. Signed-off-by:
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Paul Cercueil authored
The OST driver provides a clocksource and sched_clock that are much more accurate than the default ones. The PWM driver allows to use the PWM pins on the external header of the board. Signed-off-by:
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Paul Cercueil authored
Add support for the face buttons, the ACT8600 PMUC, the LCD panel with backlight, the rumble, internal/external SD readers, and other things. Note that the otg-phy node was dropped in the process as it was neither useful nor used, and was inside a non-compliant board "bus". Signed-off-by:
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Paul Cercueil authored
Add support for the RTC, AIC, CODEC, MMC 0/1/2, ADC, GPU, LCD, USB OTG, USB PHY controllers. Signed-off-by:
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Paul Cercueil authored
Add the TCU nodes to the JZ4780, JZ4770 and JZ4740 devicetree files. Signed-off-by:
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Paul Cercueil authored
If N fields of X cells should be provided, then that's what the devicetree should represent, instead of having one single field of (N*X) cells. Signed-off-by:
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Paul Cercueil authored
The driver requires two cells and not just one. Since these nodes are both disabled as no hardware currently use them, this fix does not really requires a Fixes: tag. Signed-off-by:
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Liangliang Huang authored
Sort the members of enum in alphabetical order is better to avoid duplicate mistakes (because the list may be grow very large), so fix it by exchanging the order. Signed-off-by:
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- 28 Apr, 2020 2 commits
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Tiezhu Yang authored
Read the address of host bridge configuration space to get the vendor ID and device ID of host bridge, and then we can distinguish various types of host bridge such as LS7A or RS780E. Signed-off-by:
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Jason Yan authored
Fix the following coccicheck warning: arch/mips/oprofile/common.c:113:2-3: Unneeded semicolon Signed-off-by:
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- 26 Apr, 2020 3 commits
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Jiaxun Yang authored
Loongson-2K (Loongson64 Reduced) is a family of SoC shipped with gs264e core. Signed-off-by:
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Tiezhu Yang authored
In order to use perf tool on the Loongson platform, we should enable kernel support for various performance events provided by software and hardware, so add CONFIG_PERF_EVENTS=y to loongson3_defconfig. E.g. without this patch: [loongson@localhost perf]$ ./perf list List of pre-defined events (to be used in -e): duration_time [Tool event] rNNN [Raw hardware event descriptor] cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware event descriptor] (see 'man perf-list' on how to encode it) mem:<addr>[/len][:access] [Hardware breakpoint] With this patch: [loongson@localhost perf]$ ./perf list List of pre-defined events (to be used in -e): branch-instructions OR branches [Hardware event] branch-misses [Hardware event] cpu-cycles OR cycles [Hardware event] instructions [Hardware event] alignment-faults [Software event] bpf-output [Software event] context-switches OR cs [Software event] cpu-clock [Software event] cpu-migrations OR migrations [Software event] dummy [Software event] emulation-faults [Software event] major-faults [Software event] minor-faults [Software event] page-faults OR faults [Software event] task-clock [Software event] duration_time [Tool event] L1-dcache-load-misses [Hardware cache event] L1-dcache-store-misses [Hardware cache event] L1-icache-load-misses [Hardware cache event] branch-load-misses [Hardware cache event] branch-loads [Hardware cache event] dTLB-load-misses [Hardware cache event] dTLB-store-misses [Hardware cache event] iTLB-load-misses [Hardware cache event] rNNN [Raw hardware event descriptor] cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware event descriptor] (see 'man perf-list' on how to encode it) mem:<addr>[/len][:access] [Hardware breakpoint] Signed-off-by:
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Huacai Chen authored
MIPS define a "Fill" macro as a cache operation in cacheops.h, this will cause build failure under some special configurations because in seq_file.c there is a "Fill" label. To avoid this failure we rename the "Fill" macro to "Fill_I" which has the same coding style as other cache operations in cacheops.h (we think renaming the "Fill" macro is more reasonable than renaming the "Fill" label). Callers of "Fill" macro is also updated. Signed-off-by:
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- 24 Apr, 2020 5 commits
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Jiaxun Yang authored
XContext might be dirty at boot time. We need to clear it to ensure early stackframe is safe. Signed-off-by:
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Liangliang Huang authored
Use mp_ops->send_ipi_single() instead of mp_ops->send_ipi_mask() in arch_send_call_function_single_ipi(). send_ipi_single() can send IPI signal to a special cpu more efficiently. Signed-off-by:
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Huacai Chen authored
1, Add unaligned gslq, gssq, gslqc1, gssqc1 emulation; 2, Add unaligned gsl{h, w, d}x, gss{h, w, d}x emulation; 3, Add unaligned gslwxc1, gsswxc1, gsldxc1, gssdxc1 emulation. Signed-off-by:Pei Huang <huangpei@loongson.cn> Reviewed-by:
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Huacai Chen authored
Move unaligned load/store helpers from unaligned.c to inst.h, then other parts of the kernel can use these helpers. Use __ASSEMBLY__ to guard the definition of "LONG" in asm.h to avoid build error on IPxx platforms. Signed-off-by:
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Huacai Chen authored
mm_isBranchInstr() is declared both in branch.h and in fpu_emulator.h but the two declarations are conflict. If both of them are included by a same file, they will cause a build error: ./arch/mips/include/asm/branch.h:33:19: error: static declaration of 'mm_isBranchInstr' follows non-static declaration static inline int mm_isBranchInstr(struct pt_regs *regs, ^ ./arch/mips/include/asm/fpu_emulator.h:177:5: note: previous declaration of 'mm_isBranchInstr' was here int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, Fix this error by removing both isBranchInstr() and mm_isBranchInstr() in fpu_emulator.h, and declaring both of them in branch.h. Signed-off-by:
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- 21 Apr, 2020 4 commits
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Christoph Hellwig authored
Looks like I misread the Kconfig magic and this driver can be compiled into 32-bit kernels. Add back the hack to extent the range of the resource_size_t, and include the header with the txx9-specific ioremap magic for that. Fixes: acfaaf52 ("ASoC: txx9: don't work around too small resource_size_t") Signed-off-by:
Christoph Hellwig <hch@lst.de> Acked-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Tiezhu Yang authored
In the current code, if CONFIG_SWIOTLB is set, when failed to get IO TLB memory from the low pages by plat_swiotlb_setup(), it may lead to the boot process failed with kernel panic. (1) On the Loongson and SiByte platform arch/mips/loongson64/dma.c arch/mips/sibyte/common/dma.c void __init plat_swiotlb_setup(void) { swiotlb_init(1); } kernel/dma/swiotlb.c void __init swiotlb_init(int verbose) { ... vstart = memblock_alloc_low(PAGE_ALIGN(bytes), PAGE_SIZE); if (vstart && !swiotlb_init_with_tbl(vstart, io_tlb_nslabs, verbose)) return; ... pr_warn("Cannot allocate buffer"); no_iotlb_memory = true; } phys_addr_t swiotlb_tbl_map_single() { ... if (no_iotlb_memory) panic("Can not allocate SWIOTLB buffer earlier ..."); ... } (2) On the Cavium OCTEON platform arch/mips/cavium-octeon/dma-octeon.c void __init plat_swiotlb_setup(void) { ... octeon_swiotlb = memblock_alloc_low(swiotlbsize, PAGE_SIZE); if (!octeon_swiotlb) panic("%s: Failed to allocate %zu bytes align=%lx\n", __func__, swiotlbsize, PAGE_SIZE); ... } Because IO_TLB_DEFAULT_SIZE is 64M, if the rest size of low memory is less than 64M when call plat_swiotlb_setup(), we can easily reproduce the panic case. In order to reduce the possibility of kernel panic when failed to get IO TLB memory under CONFIG_SWIOTLB, it is better to allocate low memory as small as possible before plat_swiotlb_setup(), so make sparse_init() using top-down allocation. Reported-by:Juxin Gao <gaojuxin@loongson.cn> Co-developed-by:
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Tiezhu Yang authored
In the current code, plat_mem_setup() is called by arch_mem_init() instead of setup_arch() and has been declared in asm/bootinfo.h, so modify the code comment to reflect the reality and remove the useless duplicate declartion in arch/mips/kernel/setup.c. Signed-off-by:
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Tiezhu Yang authored
Fix the following checkpatch error: ERROR: do not initialise globals to 0 #834: FILE: arch/mips/kernel/setup.c:834: +int hw_coherentio = 0; /* Actual hardware supported DMA coherency setting. */ Signed-off-by:
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- 20 Apr, 2020 4 commits
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Jiaxun Yang authored
This driver is using some dangerous hack to set MMIO address for HPET, which might break systems with other kinds of PCH. Also, as Loongson-3 cpufreq driver never appeared in mainline, this driver rarely got used. So we temporarily mark it as broken until we find a better solution. Signed-off-by:
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Jiaxun Yang authored
Add ACPI Controller Node for RS780E PCH to fit newly added driver. Signed-off-by:
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Jiaxun Yang authored
This controller is attached under ISA Bus and can be found in Loongson-3 systems with RS780E PCH. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Jiaxun Yang authored
Make RS780E ACPI as a platform driver so we can enable it by DeviceTree selectively. Signed-off-by:
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