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2021-08-25KVM: PPC: Book3S HV Nested: Fix TM softpatch HFAC interrupt emulationNicholas Piggin
Have the TM softpatch emulation code set up the HFAC interrupt and return -1 in case an instruction was executed with HFSCR bits clear, and have the interrupt exit handler fall through to the HFAC handler. When the L0 is running a nested guest, this ensures the HFAC interrupt is correctly passed up to the L1. The "direct guest" exit handler will turn these into PROGILL program interrupts so functionality in practice will be unchanged. But it's possible an L1 would want to handle these in a different way. Also rearrange the FAC interrupt emulation code to match the HFAC format while here (mainly, adding the FSCR_INTR_CAUSE mask). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210811160134.904987-5-npiggin@gmail.com
2021-08-25KVM: PPC: Book3S HV P9: Fixes for TM softpatch interrupt NIPNicholas Piggin
The softpatch interrupt sets HSRR0 to the faulting instruction +4, so it should subtract 4 for the faulting instruction address in the case it is a TM softpatch interrupt (the instruction was not executed) and it was not emulated. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210811160134.904987-4-npiggin@gmail.com
2021-08-25KVM: PPC: Book3S HV: Remove TM emulation from POWER7/8 pathNicholas Piggin
TM fake-suspend emulation is only used by POWER9. Remove it from the old code path. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210811160134.904987-3-npiggin@gmail.com
2021-08-25KVM: PPC: Book3S HV: Initialise vcpu MSR with MSR_MENicholas Piggin
It is possible to create a VCPU without setting the MSR before running it, which results in a warning in kvmhv_vcpu_entry_p9() that MSR_ME is not set. This is pretty harmless because the MSR_ME bit is added to HSRR1 before HRFID to guest, and a normal qemu guest doesn't hit it. Initialise the vcpu MSR with MSR_ME set. Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210811160134.904987-2-npiggin@gmail.com
2021-08-25can: mscan: mpc5xxx_can: mpc5xxx_can_probe(): remove useless BUG_ON()Tang Bin
In the function mpc5xxx_can_probe(), the variable 'data' has already been determined in the above code, so the BUG_ON() in this place is useless, remove it. Link: https://lore.kernel.org/r/20210823141033.17876-1-tangbin@cmss.chinamobile.com Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-08-25can: mscan: mpc5xxx_can: mpc5xxx_can_probe(): use of_device_get_match_data ↵Tang Bin
to simplify code Retrieve OF match data, it's better and cleaner to use 'of_device_get_match_data' over 'of_match_device'. Link: https://lore.kernel.org/r/20210823113338.3568-4-tangbin@cmss.chinamobile.com Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-08-25can: rcar_canfd: rcar_canfd_handle_channel_tx(): fix redundant assignmentLad Prabhakar
Fix redundant assignment of 'priv' to itself in rcar_canfd_handle_channel_tx(). Fixes: 76e9353a80e9 ("can: rcar_canfd: Add support for RZ/G2L family") Link: https://lore.kernel.org/r/20210820161449.18169-1-prabhakar.mahadev-lad.rj@bp.renesas.com Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-08-25can: rcar: Kconfig: Add helper dependency on COMPILE_TESTCai Huoqing
it's helpful for complie test in other platform(e.g.X86) Link: https://lore.kernel.org/r/20210825062341.2332-1-caihuoqing@baidu.com Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-08-25configfs: fix a race in configfs_lookup()Sishuai Gong
When configfs_lookup() is executing list_for_each_entry(), it is possible that configfs_dir_lseek() is calling list_del(). Some unfortunate interleavings of them can cause a kernel NULL pointer dereference error Thread 1 Thread 2 //configfs_dir_lseek() //configfs_lookup() list_del(&cursor->s_sibling); list_for_each_entry(sd, ...) Fix this by grabbing configfs_dirent_lock in configfs_lookup() while iterating ->s_children. Signed-off-by: Sishuai Gong <sishuai@purdue.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-25configfs: fold configfs_attach_attr into configfs_lookupChristoph Hellwig
This makes it more clear what gets added to the dcache and prepares for an additional locking fix. Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-25configfs: simplify the configfs_dirent_is_readyChristoph Hellwig
Return the error directly instead of using a goto. Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-25configfs: return -ENAMETOOLONG earlier in configfs_lookupChristoph Hellwig
Just like most other file systems: get the simple checks out of the way first. Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-24riscv: explicitly use symbol offsets for VDSOSaleem Abdulrasool
The current implementation of the `__rt_sigaction` reference computed an absolute offset relative to the mapped base of the VDSO. While this can be handled in the medlow model, the medany model cannot handle this as it is meant to be position independent. The current implementation relied on the BFD linker relaxing the PC-relative relocation into an absolute relocation as it was a near-zero address allowing it to be referenced relative to `zero`. We now extract the offsets and create a generated header allowing the build with LLVM and lld to succeed as we no longer depend on the linker rewriting address references near zero. This change was largely modelled after the ARM64 target which does something similar. Signed-off-by: Saleem Abdulrasool <abdulras@google.com> Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-08-24Merge pull request #69 from namjaejeon/cifsd-for-nextSteve French
ksmbd-fixes
2021-08-25MAINTAINERS: ksmbd: add cifs_common directory to ksmbd entryNamjae Jeon
The codes that shared between cifs and ksmbd will move into the cifs_common directory. This patch add it to the ksmbd entry in the MAINTAINERS file. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-08-25MAINTAINERS: ksmbd: update my email addressNamjae Jeon
My email address in ksmbd entry will be not available in a few days. Update it to my own kernel.org address. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-08-24riscv: Enable Undefined Behavior Sanitizer UBSANJisheng Zhang
Select ARCH_HAS_UBSAN_SANITIZE_ALL in order to allow the user to enable CONFIG_UBSAN_SANITIZE_ALL and instrument the entire kernel for ubsan checks. VDSO is excluded because its build doesn't include the __ubsan_handle_*() functions from lib/ubsan.c, and the VDSO has no sane way to report errors even if it has definitions of these functions. Passed lib/test_ubsan.c test. Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-08-24riscv: Keep the riscv Kconfig selects sortedJisheng Zhang
Move three Kconfig selects: ARCH_STACKWALK, ARCH_SUPPORTS_ATOMIC_RMW and ARCH_SUPPORTS_DEBUG_PAGEALLOC to the right place. Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-08-24riscv: dts: microchip: Add ethernet0 to the aliases nodeBin Meng
U-Boot expects this alias to be in place in order to fix up the mac address of the ethernet node. Note on the Icicle Kit board, currently only emac1 is enabled so it becomes the 'ethernet0'. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-08-24riscv: dts: microchip: Use 'local-mac-address' for emac1Bin Meng
Per the DT spec, 'local-mac-address' is used to specify MAC address that was assigned to the network device, while 'mac-address' is used to specify the MAC address that was last used by the boot program, and shall be used only if the value differs from 'local-mac-address' property value. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: conor dooley <conor.dooley@microchip.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-08-24riscv: Ensure the value of FP registers in the core dump file is up to dateVincent Chen
The value of FP registers in the core dump file comes from the thread.fstate. However, kernel saves the FP registers to the thread.fstate only before scheduling out the process. If no process switch happens during the exception handling process, kernel will not have a chance to save the latest value of FP registers to thread.fstate. It will cause the value of FP registers in the core dump file may be incorrect. To solve this problem, this patch force lets kernel save the FP register into the thread.fstate if the target task_struct equals the current. Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Reviewed-by: Jisheng Zhang <jszhang@kernel.org> Fixes: b8c8a9590e4f ("RISC-V: Add FP register ptrace support for gdb.") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-08-25powerpc: Use lwarx/ldarx directly instead of PPC_LWARX/LDARX macrosChristophe Leroy
Force the eh flag at 0 on PPC32. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1fc81f07cabebb875b963e295408cc3dd38c8d85.1614674882.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/ptrace: Make user_mode() common to PPC32 and PPC64Christophe Leroy
Today we have: #ifdef __powerpc64__ #define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1) #else #define user_mode(regs) (((regs)->msr & MSR_PR) != 0) #endif With ppc64_defconfig, we get: if (!user_mode(regs)) 14b4: e9 3e 01 08 ld r9,264(r30) 14b8: 71 29 40 00 andi. r9,r9,16384 14bc: 41 82 07 a4 beq 1c60 <.emulate_instruction+0x7d0> If taking the ppc32 definition of user_mode(), the exact same code is generated for ppc64_defconfig. So, only keep one version of user_mode(), preferably the one not using MSR_PR_LG which should be kept internal to reg.h. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/000a28c51808bbd802b505af42d2cb316c2be7d3.1629216000.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/syscalls: Simplify do_mmap2()Christophe Leroy
When shift is nul, operations remain valid so no test needed. And 'ret' is unnecessary. And use IS_ALIGNED() to check alignment, that's more clear. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/373ec500f386374bc5735007df3d3869eac47be1.1624618701.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/ptdump: Convert powerpc to GENERIC_PTDUMPChristophe Leroy
This patch converts powerpc to the generic PTDUMP implementation. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/03166d569526be70214fe9370a7bad219d2f41c8.1625762907.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/ptdump: Reduce level numbers by 1 in note_page() and add p4d levelChristophe Leroy
Do the same as commit f8f0d0b6fa20 ("mm: ptdump: reduce level numbers by 1 in note_page()") and add missing p4d level. This will align powerpc to the users of generic ptdump. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/d76495c574132b197b445a1f133755cca4b912a4.1625762906.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/ptdump: Remove unused 'page_size' parameterChristophe Leroy
note_page_update_state() doesn't use page_size. Remove it. Could also be removed to note_page() but as a following patch will remove all current users of note_page(), just leave it as is for now. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e2f80d052001155251bfe009c360d0c5d9242c6b.1625762906.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/ptdump: Use DEFINE_SHOW_ATTRIBUTE()Christophe Leroy
Use DEFINE_SHOW_ATTRIBUTE() instead of open coding open() and fops. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/b864a92693ca8413ef0b19f0c12065c212899b6e.1625762905.git.christophe.leroy@csgroup.eu
2021-08-25powerpc: Avoid link stack corruption in misc asm functionsChristophe Leroy
bl;mflr is used at several places to get code position. Use bcl 20,31,+4 instead of bl in order to preserve link stack. See commit c974809a26a1 ("powerpc/vdso: Avoid link stack corruption in __get_datapage()") for details. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/c6eabb4fb6c156f75d56dcbcc6f243e5ac0fba42.1629791763.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/booke: Avoid link stack corruption in several placesChristophe Leroy
Use bcl 20,31,+4 instead of bl in order to preserve link stack. See commit c974809a26a1 ("powerpc/vdso: Avoid link stack corruption in __get_datapage()") for details. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e9fbc285eceb720e6c0e032ef47fe8b05f669b48.1629791751.git.christophe.leroy@csgroup.eu
2021-08-25powerpc/32: indirect function call use bctrl rather than blrl in ↵Christophe Leroy
ret_from_kernel_thread Copied from commit 89bbe4c798bc ("powerpc/64: indirect function call use bctrl rather than blrl in ret_from_kernel_thread") blrl is not recommended to use as an indirect function call, as it may corrupt the link stack predictor. This is not a performance critical path but this should be fixed for consistency. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/91b1d242525307ceceec7ef6e832bfbacdd4501b.1629436472.git.christophe.leroy@csgroup.eu
2021-08-24scsi: ufs: Fix ufshcd_request_sense_async() for Samsung KLUFG8RHDA-B2D1Adrian Hunter
Samsung KLUFG8RHDA-B2D1 does not clear the unit attention condition if the length is zero. So go back to requesting all the sense data, as it was before patch "scsi: ufs: Request sense data asynchronously". That is simpler than creating and maintaining a quirk for affected devices. Link: https://lore.kernel.org/r/20210824114150.2105-1-adrian.hunter@intel.com Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: ufs: ufs-exynos: Fix static checker warningAlim Akhtar
clk_get_rate() returns unsigned long and currently this driver stores the return value in u32 type, resulting the below warning: Fixed smatch warnings: drivers/scsi/ufs/ufs-exynos.c:286 exynos_ufs_get_clk_info() warn: wrong type for 'ufs->mclk_rate' (should be 'ulong') drivers/scsi/ufs/ufs-exynos.c:287 exynos_ufs_get_clk_info() warn: wrong type for 'pclk_rate' (should be 'ulong') Link: https://lore.kernel.org/r/20210819171131.55912-1-alim.akhtar@samsung.com Fixes: 55f4b1f73631 ("scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: mpt3sas: Use the proper SCSI midlayer interfaces for PIMartin K. Petersen
Use the SCSI midlayer interfaces to query protection interval, reference tag, and per-command DIX flags. Link: https://lore.kernel.org/r/20210817025014.12085-2-martin.petersen@oracle.com Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Cc: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Use the proper SCSI midlayer interfaces for PIMartin K. Petersen
Use the SCSI midlayer interfaces to query protection interval, reference tag, per-command DIX flags, and logical block count. Link: https://lore.kernel.org/r/20210817025014.12085-3-martin.petersen@oracle.com CC: James Smart <james.smart@broadcom.com> CC: Dick Kennedy <dick.kennedy@broadcom.com> Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: core: Fix hang of freezing queue between blocking and running deviceLi Jinlin
We found a hang, the steps to reproduce are as follows: 1. blocking device via scsi_device_set_state() 2. dd if=/dev/sda of=/mnt/t.log bs=1M count=10 3. echo none > /sys/block/sda/queue/scheduler 4. echo "running" >/sys/block/sda/device/state Step 3 and 4 should complete after step 4, but they hang. CPU#0 CPU#1 CPU#2 --------------- ---------------- ---------------- Step 1: blocking device Step 2: dd xxxx ^^^^^^ get request q_usage_counter++ Step 3: switching scheculer elv_iosched_store elevator_switch blk_mq_freeze_queue blk_freeze_queue > blk_freeze_queue_start ^^^^^^ mq_freeze_depth++ > blk_mq_run_hw_queues ^^^^^^ can't run queue when dev blocked > blk_mq_freeze_queue_wait ^^^^^^ Hang here!!! wait q_usage_counter==0 Step 4: running device store_state_field scsi_rescan_device scsi_attach_vpd scsi_vpd_inquiry __scsi_execute blk_get_request blk_mq_alloc_request blk_queue_enter ^^^^^^ Hang here!!! wait mq_freeze_depth==0 blk_mq_run_hw_queues ^^^^^^ dispatch IO, q_usage_counter will reduce to zero blk_mq_unfreeze_queue ^^^^^ mq_freeze_depth-- To fix this, we need to run queue before rescanning device when the device state changes to SDEV_RUNNING. Link: https://lore.kernel.org/r/20210824025921.3277629-1-lijinlin3@huawei.com Fixes: f0f82e2476f6 ("scsi: core: Fix capacity set to zero after offlinining device") Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Li Jinlin <lijinlin3@huawei.com> Signed-off-by: Qiu Laibin <qiulaibin@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Copyright updates for 14.0.0.1 patchesJames Smart
Update copyrights to 2021 for files modified in the 14.0.0.1 patch set. Link: https://lore.kernel.org/r/20210816162901.121235-17-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Update lpfc version to 14.0.0.1James Smart
Update lpfc version to 14.0.0.1 Link: https://lore.kernel.org/r/20210816162901.121235-16-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add bsg support for retrieving adapter cmf dataJames Smart
Add a bsg ioctl to allow user applications to retrieve the adapter congestion management framework buffer. Link: https://lore.kernel.org/r/20210816162901.121235-15-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add cmf_info sysfs entryJames Smart
Allow abbreviated cm framework status information to be obtained via sysfs. Link: https://lore.kernel.org/r/20210816162901.121235-14-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add debugfs support for cm framework buffersJames Smart
Add support via debugfs to report the cm statistics, cm enablement, and rx monitor information. Link: https://lore.kernel.org/r/20210816162901.121235-13-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add support for maintaining the cm statistics bufferJames Smart
Add the logic to move the congestion management and event information into the cmd statistics buffer maintained for the adapter. The update includes rolling up values for the last minute, hour, and day information. Link: https://lore.kernel.org/r/20210816162901.121235-12-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add rx monitoring statisticsJames Smart
The driver provides overwatch of the cm behavior by maintaining a set of rx I/O statistics. This information is also used in later updating of the cm statistics buffer. Link: https://lore.kernel.org/r/20210816162901.121235-11-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add support for the CM frameworkJames Smart
Complete the enablement of the cm framework feature in the adapter. Perform the following: - Detect the presence of the congestion management framework feature. When the cm framework is present: - Issue the SET_FEATURE command to enable the feature. - Register the cm statistics buffer with the adapter. - Read the cm enablement buffer to determine the cm framework state for cm management. When cm management is enabled: - Monitor all FPIN and congestion signalling events, incrementing counters. - Regularly sync with the adapter to communicate congestion events and to receive an rx request limit. - Monitor requests for rx data and ensure that no more than the adapter prescribed limit is issued on the link. If the limit is exceeded, SCSI and/or NVMe traffic is temporarily suspended. - Maintain the minute, hourly, daily statistics buffer. - Monitor for congestion enablement change events, causing a reread of the enablement buffer and acting on any change in enablement. And: - Add teardown logic, including buffer deregistration, on adapter detachment or reset. Link: https://lore.kernel.org/r/20210816162901.121235-10-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add cmfsync WQE supportJames Smart
When congestion mgmt is enabled, cmf has the driver regularly issue a command to synchronize reporting of congestion mgmt events such as fpin and signal delivery. This patch adds the definition of the CMF_SYNC WQE and its CQE fields as well as support for issuing the command. The patch also adds the few remaining cmf-related SLI additions, such as feature definition for enablement of CMF and notifications to the driver if the cm enablement mode changes. Link: https://lore.kernel.org/r/20210816162901.121235-9-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add support for cm enablement bufferJames Smart
As part of the cmf framework, the firmware maintains a table with congestion related state information, specifically whether enabled and if enabled, whether monitoring or actively managing congestion. Add definition of the table and add support to read the table from the adapter and determine if it is enabled. In support of this, the READ_OBJECT mailbox command definition is added to the driver. Link: https://lore.kernel.org/r/20210816162901.121235-8-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add cm statistics buffer supportJames Smart
The cmf framework requires the driver to maintain a cm statistics table, accessible inband, of congestion related statistics that are reported per minute, rolled up to per hour, and rolled up again per day. Several days worth may be maintained. The table is registered with the adapter when the MIB feature is enabled. Add definition of the table and add support to register the table with the adapter. Includes definition and initialization of event counters that are later added to the statistics table. Link: https://lore.kernel.org/r/20210816162901.121235-7-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add EDC ELS supportJames Smart
When congestion management is enabled, issue EDC ELS to register congestion signaling capabilities with the fabric. The response handling will process the fabric parameters and set the reporting parameters. Similarly, add support for receiving an EDC request from the fabric generating a corresponding response. Implement handlers for congestion signals from the fabric and maintain statistics for them. Link: https://lore.kernel.org/r/20210816162901.121235-6-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Expand FPIN and RDF receive loggingJames Smart
Expand FPIN logging: - Display Attached Port Names for Link Integrity and Peer Congestion events - Log Delivery, Peer Congestion, and Congestion events - Sanity check FPIN descriptor lengths when processing FPIN descriptors. Log RDF events when congestion logging is enabled. Link: https://lore.kernel.org/r/20210816162901.121235-5-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add MIB feature enablement supportJames Smart
MIB support is currently limited to detecting support in the adapter and ensuring FDMI support is enabled if present. For the new framework MIB support also requires active enablement of support via the SET_FEATURES command with the firmware. Rework the MIB detection and enablement for the following: - Move detection away from the get_sli4_parameters routine, and into the hba_setup path. get_sli4_parameters is only called once at attachment while hba_setup is called as part of any SLI port reset path. This ensures detection after firmware download. - Update SET_FEATURES mbx command for the MIB enablement feature and add support for the feature. - Create the cmf_setup routine to encapsulate the detection of MIB support and perform the enablement of the MIB support feature. Link: https://lore.kernel.org/r/20210816162901.121235-4-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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