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* s390/crypto: use TRNG for seeding/reseedingHarald Freudenberger2019-04-251-20/+47
| | | | | | | | | | | | | | | | | | With the z14 machine there came also a CPACF hardware extension which provides a True Random Number Generator. This TRNG can be accessed with a new subfunction code within the CPACF prno instruction and provides random data with very high entropy. So if there is a TRNG available, let's use it for initial seeding and reseeding instead of the current implementation which tries to generate entropy based on stckf (store clock fast) jitters. For details about the amount of data needed and pulled for seeding and reseeding there can be explaining comments in the code found. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/crypto: rework generate_entropy function for pseudo random ddHarald Freudenberger2019-04-251-28/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is a rework of the generate_entropy function of the pseudo random device driver exploiting the prno CPACF instruction. George Spelvin pointed out some issues with the existing implementation. One point was, that the buffer used to store the stckf values is 2 pages which are initially filled with get_random_bytes() for each 64 byte junk produced by the function. Another point was that the stckf values only carry entropy in the LSB and thus a buffer of 2 pages is not really needed. Then there was a comment about the use of the kimd cpacf function without proper initialization. The rework addresses these points and now one page is used and only one half of this is filled with get_random_bytes() on each chunk of 64 bytes requested data. The other half of the page is filled with stckf values exored into with an overlap of 4 bytes. This can be done due to the fact that only the lower 4 bytes carry entropy we need. For more details about the algorithm used, see the header of the function. The generate_entropy() function now uses the cpacf function klmd with proper initialization of the parameter block to perform the sha512 hash. George also pointed out some issues with the internal buffers used for seeding and reads. These buffers are now zeroed with memzero_implicit after use. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reported-by: George Spelvin <lkml@sdf.org> Suggested-by: George Spelvin <lkml@sdf.org> Reviewed-by: Patrick Steuer <steuer@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: fix pxd_bad with folded page tablesMartin Schwidefsky2019-04-241-14/+19
| | | | | | | | | | | | | | | | | | | | With git commit d1874a0c2805fcfa9162c972d6b7541e57adb542 "s390/mm: make the pxd_offset functions more robust" and a 2-level page table it can now happen that pgd_bad() gets asked to verify a large segment table entry. If the entry is marked as dirty pgd_bad() will incorrectly return true. Change the pgd_bad(), p4d_bad(), pud_bad() and pmd_bad() functions to first verify the table type, return false if the table level is lower than what the function is suppossed to check, return true if the table level is too high, and otherwise check the relevant region and segment table bits. pmd_bad() has to check against ~SEGMENT_ENTRY_BITS for normal page table pointers or ~SEGMENT_ENTRY_BITS_LARGE for large segment table entries. Same for pud_bad() which has to check against ~_REGION_ENTRY_BITS or ~_REGION_ENTRY_BITS_LARGE. Fixes: d1874a0c2805 ("s390/mm: make the pxd_offset functions more robust") Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/kasan: fix strncpy_from_user kasan checksVasily Gorbik2019-04-241-0/+2
| | | | | | | | | | | | | | arch/s390/lib/uaccess.c is built without kasan instrumentation. Kasan checks are performed explicitly in copy_from_user/copy_to_user functions. But since those functions could be inlined, calls from files like uaccess.c with instrumentation disabled won't generate kasan reports. This is currently the case with strncpy_from_user function which was revealed by newly added kasan test. Avoid inlining of copy_from_user/copy_to_user when the kernel is built with kasan support to make sure kasan checks are fully functional. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/cpum_cf_diag: Add support for CPU-MF SVN 6Thomas-Mich Richter2019-04-231-2/+7
| | | | | | | | | | | Add support for the CPU-Measurement Facility counter second version number 6. This number is used to detect some more counters in the crypto counter set and the extended counter set. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: convert to the generic get_user_pages_fast codeMartin Schwidefsky2019-04-234-292/+14
| | | | | | | | Define the gup_fast_permitted to check against the asce_limit of the mm attached to the current task, then replace the s390 specific gup code with the generic implementation in mm/gup.c. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: make the pxd_offset functions more robustMartin Schwidefsky2019-04-232-45/+55
| | | | | | | | | | | | | | | | | | | | | | | | Change the way how pgd_offset, p4d_offset, pud_offset and pmd_offset walk the page tables. pgd_offset now always calculates the index for the top-level page table and adds it to the pgd, this is either a segment table offset for a 2-level setup, a region-3 offset for 3-levels, region-2 offset for 4-levels, or a region-1 offset for a 5-level setup. The other three functions p4d_offset, pud_offset and pmd_offset will only add the respective offset if they dereference the passed pointer. With the new way of walking the page tables a sequence like this from mm/gup.c now works: pgdp = pgd_offset(current->mm, addr); pgd = READ_ONCE(*pgdp); p4dp = p4d_offset(&pgd, addr); p4d = READ_ONCE(*p4dp); pudp = pud_offset(&p4d, addr); pud = READ_ONCE(*pudp); pmdp = pmd_offset(&pud, addr); pmd = READ_ONCE(*pmdp); Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: avoid __builtin_return_address(n) on clangArnd Bergmann2019-04-111-0/+5
| | | | | | | | | | | | | | | | llvm on s390 has problems with __builtin_return_address(n), with n>0, this results in a somewhat cryptic error message: fatal error: error in backend: Unsupported stack frame traversal count To work around it, use the direct return address directly. This is probably not ideal here, but gets things to compile and should only lead to inferior reporting, not to misbehavior of the generated code. Link: https://bugs.llvm.org/show_bug.cgi?id=41424 Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: Convert IS_ENABLED uses to __is_definedJoe Perches2019-04-113-7/+7
| | | | | | | | IS_ENABLED should be reserved for CONFIG_<FOO> uses so convert the uses of IS_ENABLED with a #define to __is_defined. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: make chkbss work with clangArnd Bergmann2019-04-111-1/+2
| | | | | | | | | | | | | | | llvm skips an empty .bss section entirely, which makes the check fail with an unexpected error: /tmp/binutils-multi-test/bin/s390x-linux-gnu-objdump: section '.bss' mentioned in a -j option, but not found in any input file error: arch/s390/boot/compressed/decompressor.o .bss section is not empty ../arch/s390/scripts/Makefile.chkbss:20: recipe for target 'arch/s390/boot/compressed/decompressor.o.chkbss' failed Change the check so we first see if a .bss section exists before trying to read its size. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: make __load_psw_mask work with clangArnd Bergmann2019-04-111-3/+3
| | | | | | | | | | | | | | | | clang fails to use the %O and %R inline assembly modifiers the same way as gcc, leading to build failures with every use of __load_psw_mask(): /tmp/nmi-4a9f80.s: Assembler messages: /tmp/nmi-4a9f80.s:571: Error: junk at end of line: `+8(160(%r11))' /tmp/nmi-4a9f80.s:626: Error: junk at end of line: `+8(160(%r11))' Replace these with a more conventional way of passing the addresses that should work with both clang and gcc. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: syscall_wrapper: avoid clang warningArnd Bergmann2019-04-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Building system calls with clang results in a warning about an alias from a global function to a static one: ../fs/namei.c:3847:1: warning: unused function '__se_sys_mkdirat' [-Wunused-function] SYSCALL_DEFINE3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode) ^ ../include/linux/syscalls.h:219:36: note: expanded from macro 'SYSCALL_DEFINE3' #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) ^ ../include/linux/syscalls.h:228:2: note: expanded from macro 'SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^ ../arch/s390/include/asm/syscall_wrapper.h:126:18: note: expanded from macro '__SYSCALL_DEFINEx' asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ ^ <scratch space>:31:1: note: expanded from here __se_sys_mkdirat ^ The only reference to the static __se_sys_mkdirat() here is the alias, but this only gets evaluated later. Making this function global as well avoids the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: don't build vdso32 with clangArnd Bergmann2019-04-113-6/+9
| | | | | | | | | clang does not support 31 bit object files on s390, so skip the 32-bit vdso here, and only build it when using gcc to compile the kernel. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: remove -fno-strength-reduce flagArnd Bergmann2019-04-111-1/+1
| | | | | | | | | | This was added as a workaround for really old compilers, and it prevents building with clang now. I can see no reason for keeping it, as it has already been removed for most architectures in the pre-git era, so let's remove it everywhere, rather than only for clang. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: fine-tune stack switch helperMartin Schwidefsky2019-04-111-9/+9
| | | | | | | | | | The CALL_ON_STACK helper currently does not work with clang and for calls without arguments. It does not initialize r2 although the constraint is "+&d". Rework the CALL_FMT_x and the CALL_ON_STACK macros to work with clang and produce optimal code in all cases. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: silence compiler warning when compiling without CONFIG_PGSTEThomas Huth2019-04-101-0/+2
| | | | | | | | | | | | | | | | | If CONFIG_PGSTE is not set (e.g. when compiling without KVM), GCC complains: CC arch/s390/mm/pgtable.o arch/s390/mm/pgtable.c:413:15: warning: ‘pmd_alloc_map’ defined but not used [-Wunused-function] static pmd_t *pmd_alloc_map(struct mm_struct *mm, unsigned long addr) ^~~~~~~~~~~~~ Wrap the function with "#ifdef CONFIG_PGSTE" to silence the warning. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/protvirt: block kernel command line alterationVasily Gorbik2019-04-101-1/+1
| | | | | | | | Disallow kernel command line alteration via ipl parameter block if running in protected virtualization environment. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/protvirt: add memory sharing for diag 308 set/storeVasily Gorbik2019-04-102-0/+12
| | | | | | | | Add sharing of ipl parameter block for diag 308 set/store calls to allow kvm access in protected virtualization environment. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/uv: introduce guest side ultravisor codeVasily Gorbik2019-04-106-0/+175
| | | | | | | | | | | | | | | | | | | | The Ultravisor Call Facility (stfle bit 158) defines an API to the Ultravisor (UV calls), a mini hypervisor located at machine level. With help of the Ultravisor, KVM will be able to run "protected" VMs, special VMs whose memory and management data are unavailable to KVM. The protected VMs can also request services from the Ultravisor. The guest api consists of UV calls to share and unshare memory with the kvm hypervisor. To enable this feature support PROTECTED_VIRTUALIZATION_GUEST kconfig option has been introduced. Co-developed-by: Janosch Frank <frankja@de.ibm.com> Signed-off-by: Janosch Frank <frankja@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: introduce .boot.preserved.data section compile time validationVasily Gorbik2019-04-101-2/+2
| | | | | | | | | | Same as for .boot.data section make sure that .boot.preserved.data sections of vmlinux and arch/s390/compressed/vmlinux match before producing the compressed kernel image. Symbols presence, order and sizes are cross-checked. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: move ipl block to .boot.preserved.data sectionVasily Gorbik2019-04-105-29/+16
| | | | | | | | | | .boot.preserved.data is a better fit for ipl block than .boot.data which is discarded after init. Reusing .boot.preserved.data allows to simplify code a little bit and avoid copying data from .boot.data to persistent variables. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: introduce .boot.preserved.data sectionGerald Schaefer2019-04-106-0/+31
| | | | | | | | | | | | | | | Introduce .boot.preserve.data section which is similar to .boot.data and "shared" between the decompressor code and the decompressed kernel. The decompressor will store values in it, and copy over to the decompressed image before starting it. This method allows to avoid using pre-defined addresses and other hacks to pass values between those boot phases. Unlike .boot.data section .boot.preserved.data is NOT a part of init data, and hence will be preserved for the kernel life time. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/cpum_cf: Add support for CPU-MF SVN 6Thomas Richter2019-03-292-38/+84
| | | | | | | | | | | Add support for the CPU-Measurement Facility counter second version number 6. This number is used to detect some more counters in the crypto counter set and the extended counter set. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mem_detect: Use IS_ENABLED(CONFIG_BLK_DEV_INITRD)Joe Perches2019-03-291-1/+1
| | | | | | | | | IS_ENABLED should generally use CONFIG_ prefaced symbols and it doesn't appear as if there is a BLK_DEV_INITRD define. Cc: <stable@vger.kernel.org> # 4.20 Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge tag 's390-5.1-2' of ↵Linus Torvalds2019-03-286-48/+76
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Improvements and bug fixes for 5.1-rc2: - Fix early free of the channel program in vfio - On AP device removal make sure that all messages are flushed with the driver still attached that queued the message - Limit brk randomization to 32MB to reduce the chance that the heap of ld.so is placed after the main stack - Add a rolling average for the steal time of a CPU, this will be needed for KVM to decide when to do busy waiting - Fix a warning in the CPU-MF code - Add a notification handler for AP configuration change to react faster to new AP devices" * tag 's390-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/cpumf: Fix warning from check_processor_id zcrypt: handle AP Info notification from CHSC SEI command vfio: ccw: only free cp on final interrupt s390/vtime: steal time exponential moving average s390/zcrypt: revisit ap device remove procedure s390: limit brk randomization to 32MB
| * s390/cpumf: Fix warning from check_processor_idThomas Richter2019-03-281-6/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Function __hw_perf_event_init() used a CPU variable without ensuring CPU preemption has been disabled. This caused the following warning in the kernel log: [ 7.277085] BUG: using smp_processor_id() in preemptible [00000000] code: cf-csdiag/1892 [ 7.277111] caller is cf_diag_event_init+0x13a/0x338 [ 7.277122] CPU: 10 PID: 1892 Comm: cf-csdiag Not tainted 5.0.0-20190318.rc0.git0.9e1a11e0f602.300.fc29.s390x+debug #1 [ 7.277131] Hardware name: IBM 2964 NC9 712 (LPAR) [ 7.277139] Call Trace: [ 7.277150] ([<000000000011385a>] show_stack+0x82/0xd0) [ 7.277161] [<0000000000b7a71a>] dump_stack+0x92/0xd0 [ 7.277174] [<00000000007b7e9c>] check_preemption_disabled+0xe4/0x100 [ 7.277183] [<00000000001228aa>] cf_diag_event_init+0x13a/0x338 [ 7.277195] [<00000000002cf3aa>] perf_try_init_event+0x72/0xf0 [ 7.277204] [<00000000002d0bba>] perf_event_alloc+0x6fa/0xce0 [ 7.277214] [<00000000002dc4a8>] __s390x_sys_perf_event_open+0x398/0xd50 [ 7.277224] [<0000000000b9e8f0>] system_call+0xdc/0x2d8 [ 7.277233] 2 locks held by cf-csdiag/1892: [ 7.277241] #0: 00000000976f5510 (&sig->cred_guard_mutex){+.+.}, at: __s390x_sys_perf_event_open+0xd2e/0xd50 [ 7.277257] #1: 00000000363b11bd (&pmus_srcu){....}, at: perf_event_alloc+0x52e/0xce0 The variable is now accessed in proper context. Use get_cpu_var()/put_cpu_var() pair to disable preemption during access. As the hardware authorization settings apply to all CPUs, it does not matter which CPU is used to check the authorization setting. Remove the event->count assignment. It is not needed as function perf_event_alloc() allocates memory for the event with kzalloc() and thus count is already set to zero. Fixes: fe5908bccc56 ("s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace") Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * zcrypt: handle AP Info notification from CHSC SEI commandTony Krowiak2019-03-111-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current AP bus implementation periodically polls the AP configuration to detect changes. When the AP configuration is dynamically changed via the SE or an SCLP instruction, the changes will not be reflected to sysfs until the next time the AP configuration is polled. The CHSC architecture provides a Store Event Information (SEI) command to make notification of an AP configuration change. This patch introduces a handler to process notification from the CHSC SEI command by immediately kicking off an AP bus scan-after-event. Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Sebastian Ott <sebott@linux.ibm.com> Reviewed-by: Harald Freudenberger <FREUDE@de.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/vtime: steal time exponential moving averageMartin Schwidefsky2019-03-063-38/+45
| | | | | | | | | | | | | | | | To be able to judge the current overcommitment ratio for a CPU add a lowcore field with the exponential moving average of the steal time. The average is updated every tick. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: limit brk randomization to 32MBMartin Schwidefsky2019-03-061-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | For a 64-bit process the randomization of the program break is quite large with 1GB. That is as big as the randomization of the anonymous mapping base, for a test case started with '/lib/ld64.so.1 <exec>' it can happen that the heap is placed after the stack. To avoid this limit the program break randomization to 32MB for 64-bit and keep 8MB for 31-bit. Reported-by: Stefan Liebler <stli@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | Merge tag 'armsoc-fixes' of ↵Linus Torvalds2019-03-2815-38/+36
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC fixes from Arnd Bergmann: "A couple of minor fixes only for now - fix for incorrect DMA channels on Renesas R-Car - Broadcom bcm2835 error handling fixes - Kconfig dependency fixes for bcm2835 and davinci - CPU idle wakeup fix for i.MX6 - MMC regression on Tegra186 - fix incorrect phy settings on one imx board" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: arm64: tegra: Disable CQE Support for SDMMC4 on Tegra186 ARM: dts: nomadik: Fix polarity of SPI CS ARM: davinci: fix build failure with allnoconfig ARM: imx_v4_v5_defconfig: enable PWM driver ARM: imx_v6_v7_defconfig: continue compiling the pwm driver ARM: dts: imx6dl-yapp4: Use correct pseudo PHY address for the switch ARM: dts: imx6qdl: Fix typo in imx6qdl-icore-rqs.dtsi ARM: dts: imx6ull: Use the correct style for SPDX License Identifier ARM: dts: pfla02: increase phy reset duration ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time ARM: imx51: fix a leaked reference by adding missing of_node_put ARM: dts: imx6dl-yapp4: Use rgmii-id phy mode on the cpu port arm64: bcm2835: Add missing dependency on MFD_CORE. ARM: dts: bcm283x: Fix hdmi hpd gpio pull soc: bcm: bcm2835-pm: Fix error paths of initialization. soc: bcm: bcm2835-pm: Fix PM_IMAGE_PERI power domain support. arm64: dts: renesas: r8a774c0: Fix SCIF5 DMA channels arm64: dts: renesas: r8a77990: Fix SCIF5 DMA channels
| * | arm64: tegra: Disable CQE Support for SDMMC4 on Tegra186Jonathan Hunter2019-03-251-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enabling CQE support on Tegra186 Jetson TX2 has introduced a regression that is causing accesses to the file-system on the eMMC to fail. Errors such as the following have been observed ... mmc2: running CQE recovery mmc2: mmc_select_hs400 failed, error -110 print_req_error: I/O error, dev mmcblk2, sector 8 flags 80700 mmc2: cqhci: CQE failed to exit halt state For now disable CQE support for Tegra186 until this issue is resolved. Fixes: dfd3cb6feb73 arm64: tegra: Add CQE Support for SDMMC4 Signed-off-by: Jonathan Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | Merge tag 'imx-fixes-5.1' of ↵Arnd Bergmann2019-03-258-24/+22
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes i.MX fixes for 5.1: - Correct phy mode setting of imx6dl-yapp4 board to fix a problem caused by commit 5ecdd77c61c8 ("net: dsa: qca8k: disable delay for RGMII mode"). - Add a missing of_node_put call to fix leaked reference detected by coccinelle in imx51 machine code. - Fix imx6q cpuidle driver bug which causes that CPU might not wake up at expected time. - Increase reset duration of Ethernet phy Micrel KSZ9031RNX to fix transmission timeouts error seen on imx6qdl-phytec-pfla02 board. - Correct SPDX License Identifier style for imx6ull-pinfunc-snvs.h. - Fix 'bus-witdh' typos in imx6qdl-icore-rqs.dtsi. - Correct pseudo PHY address of switch device for imx6dl-yapp4 board. - Update PWM driver options in imx defconfig files due to the change on driver part. * tag 'imx-fixes-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: ARM: imx_v4_v5_defconfig: enable PWM driver ARM: imx_v6_v7_defconfig: continue compiling the pwm driver ARM: dts: imx6dl-yapp4: Use correct pseudo PHY address for the switch ARM: dts: imx6qdl: Fix typo in imx6qdl-icore-rqs.dtsi ARM: dts: imx6ull: Use the correct style for SPDX License Identifier ARM: dts: pfla02: increase phy reset duration ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time ARM: imx51: fix a leaked reference by adding missing of_node_put ARM: dts: imx6dl-yapp4: Use rgmii-id phy mode on the cpu port
| | * | ARM: imx_v4_v5_defconfig: enable PWM driverUwe Kleine-König2019-03-221-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While there is no mainline board that makes use of the PWM still enable the driver for it to increase compile test coverage. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: imx_v6_v7_defconfig: continue compiling the pwm driverUwe Kleine-König2019-03-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After the pwm-imx driver was split into two drivers and the Kconfig symbol changed accordingly, use the new name to continue being able to use the PWM hardware. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: dts: imx6dl-yapp4: Use correct pseudo PHY address for the switchMichal Vokáč2019-03-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The switch is accessible through pseudo PHY which is located at 0x10. Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Fixes: 87489ec3a77f ("ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards") Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: dts: imx6qdl: Fix typo in imx6qdl-icore-rqs.dtsiMasanari Iida2019-03-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a spelling typo. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Fixes: cc42603de320 ("ARM: dts: imx6q-icore-rqs: Add Engicam IMX6 Q7 initial support") Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: dts: imx6ull: Use the correct style for SPDX License IdentifierNishad Kamdar2019-03-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch corrects the SPDX License Identifier style in imx6ull-pinfunc-snvs.h. Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 and making some manual changes. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: dts: pfla02: increase phy reset durationMarco Felsch2019-03-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Increase the reset duration to ensure correct phy functionality. The reset duration is taken from barebox commit 52fdd510de ("ARM: dts: pfla02: use long enough reset for ethernet phy"): Use a longer reset time for ethernet phy Micrel KSZ9031RNX. Otherwise a small percentage of modules have 'transmission timeouts' errors like barebox@Phytec phyFLEX-i.MX6 Quad Carrier-Board:/ ifup eth0 warning: No MAC address set. Using random address 7e:94:4d:02:f8:f3 eth0: 1000Mbps full duplex link detected eth0: transmission timeout T eth0: transmission timeout T eth0: transmission timeout T eth0: transmission timeout T eth0: transmission timeout Cc: Stefan Christ <s.christ@phytec.de> Cc: Christian Hemp <c.hemp@phytec.de> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Fixes: 3180f956668e ("ARM: dts: Phytec imx6q pfla02 and pbab01 support") Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected timeKohji Okuno2019-03-191-17/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the current cpuidle implementation for i.MX6q, the CPU that sets 'WAIT_UNCLOCKED' and the CPU that returns to 'WAIT_CLOCKED' are always the same. While the CPU that sets 'WAIT_UNCLOCKED' is in IDLE state of "WAIT", if the other CPU wakes up and enters IDLE state of "WFI" istead of "WAIT", this CPU can not wake up at expired time. Because, in the case of "WFI", the CPU must be waked up by the local timer interrupt. But, while 'WAIT_UNCLOCKED' is set, the local timer is stopped, when all CPUs execute "wfi" instruction. As a result, the local timer interrupt is not fired. In this situation, this CPU will wake up by IRQ different from local timer. (e.g. broacast timer) So, this fix changes CPU to return to 'WAIT_CLOCKED'. Signed-off-by: Kohji Okuno <okuno.kohji@jp.panasonic.com> Fixes: e5f9dec8ff5f ("ARM: imx6q: support WAIT mode using cpuidle") Cc: <stable@vger.kernel.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: imx51: fix a leaked reference by adding missing of_node_putWen Yang2019-03-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./arch/arm/mach-imx/mach-imx51.c:64:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 57, but without a corresponding object release within this function. Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Cc: Russell King <linux@armlinux.org.uk> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: NXP Linux Team <linux-imx@nxp.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| | * | ARM: dts: imx6dl-yapp4: Use rgmii-id phy mode on the cpu portMichal Vokáč2019-03-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use rgmii-id phy mode for the CPU port (MAC0) of the QCA8334 switch to add delays to both Tx and Rx clock. It worked with the rgmii mode before because the qca8k driver (incorrectly) enabled delays in that mode and rgmii-id was not implemented at all. Commit 5ecdd77c61c8 ("net: dsa: qca8k: disable delay for RGMII mode") removed the delays from the RGMII mode and hence broke the networking. To fix the problem, commit a968b5e9d587 ("net: dsa: qca8k: Enable delay for RGMII_ID mode") was introduced. Now the correct phy mode is available so use it. Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| * | | Merge tag 'arm-soc/for-5.1/soc-fixes' of ↵Arnd Bergmann2019-03-251-0/+1
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://github.com/Broadcom/stblinux into arm/fixes This pull request contains Broadcom ARM/ARM64-based SoCs fixes for 5.1, please pull the following: - Eric provides fixes for the bcm2835-pm driver: added missing depends on MFD_CORE for the ARM64 definition of ARCH_BCM2835, fixing error paths on initialization and fixing the PM_IMAGE_PERI power domain * tag 'arm-soc/for-5.1/soc-fixes' of https://github.com/Broadcom/stblinux: arm64: bcm2835: Add missing dependency on MFD_CORE. soc: bcm: bcm2835-pm: Fix error paths of initialization. soc: bcm: bcm2835-pm: Fix PM_IMAGE_PERI power domain support.
| | * \ \ Merge tag 'tags/bcm2835-drivers-next-2019-03-12' into soc/fixesFlorian Fainelli2019-03-181-0/+1
| | |\ \ \ | | | |/ / | | |/| | | | | | | | | | | | | | | | | | | | | | This pull request brings in a build fix for arm64 with bcm2835 enabled, and fixes the driver in the presence of -EPROBE_DEFER. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
| | | * | arm64: bcm2835: Add missing dependency on MFD_CORE.Eric Anholt2019-03-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding the MFD dependency for power domains and WDT in bcm2835, I added it only on the arm32 side and missed it for arm64. Fixes: 5e6acc3e678e ("bcm2835-pm: Move bcm2835-watchdog's DT probe to an MFD.") Signed-off-by: Eric Anholt <eric@anholt.net> Reported-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
| * | | | Merge tag 'arm-soc/for-5.1/devicetree-fixes' of ↵Arnd Bergmann2019-03-251-1/+1
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://github.com/Broadcom/stblinux into arm/fixes This pull request contains Broadcom ARM-based SoCs Device Tree fixes for 5.1, please pull the following: - Helen fixes the HDMI hot-pug detect GPIO polarity for the Rasperry Pi model B revision 2 * tag 'arm-soc/for-5.1/devicetree-fixes' of https://github.com/Broadcom/stblinux: ARM: dts: bcm283x: Fix hdmi hpd gpio pull
| | * \ \ \ Merge tag 'tags/bcm2835-dt-next-2019-03-04' into devicetree/fixesFlorian Fainelli2019-03-191-1/+1
| | |\ \ \ \ | | | |/ / / | | |/| | | | | | | | | | | | | | | | | | | | | This pull request brings in a fix for detecting HDMI on the Pi B rev 2. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
| | | * | | ARM: dts: bcm283x: Fix hdmi hpd gpio pullHelen Koike2019-03-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Raspberry pi board model B revison 2 have the hot plug detector gpio active high (and not low as it was in the dts). Signed-off-by: Helen Koike <helen.koike@collabora.com> Fixes: 49ac67e0c39c ("ARM: bcm2835: Add VC4 to the device tree.") Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Eric Anholt <eric@anholt.net>
| * | | | | ARM: dts: nomadik: Fix polarity of SPI CSLinus Walleij2019-03-251-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SPI DT bindings are for historical reasons a pitfall, the ability to flag a GPIO line as active high/low with the second cell flags was introduced later so the SPI subsystem will only accept the bool flag spi-cs-high to indicate that the line is active high. It worked by mistake, but the mistake was corrected in another commit. The comment in the DTS file was also misleading: this CS is indeed active high. Fixes: cffbb02dafa3 ("ARM: dts: nomadik: Augment NHK15 panel setting") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | | | | Merge tag 'renesas-fixes-for-v5.1' of ↵Arnd Bergmann2019-03-252-8/+6
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into arm/fixes Renesas ARM Based SoC Fixes for v5.1 R-Car Gen3 E3 (r8a77990) and RZ/G2E (r8a774c0) SoCs: * Correct SCIF5 DMA channels * tag 'renesas-fixes-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: arm64: dts: renesas: r8a774c0: Fix SCIF5 DMA channels arm64: dts: renesas: r8a77990: Fix SCIF5 DMA channels
| | * | | | | arm64: dts: renesas: r8a774c0: Fix SCIF5 DMA channelsGeert Uytterhoeven2019-02-251-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct the DMA channels for SCIF5 from 16..47 to 0..15, as was done for R-Car E3. Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com> Fixes: 2660a6af690ebbb4 ("arm64: dts: renesas: r8a774c0: Add SCIF and HSCIF nodes") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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