- 20 Jun, 2019 2 commits
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warning: drivers/scsi/mpt3sas/mpt3sas_base.c: In function _base_update_ioc_page1_inlinewith_perf_mode : drivers/scsi/mpt3sas/mpt3sas_base.c:4510:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (ioc->high_iops_queues) { ^ drivers/scsi/mpt3sas/mpt3sas_base.c:4530:2: note: here case MPT_PERF_MODE_LATENCY: ^~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough. Fixes: 30cb97023f38 ("scsi: mpt3sas: Introduce perf_mode module parameter") Signed-off-by:Gustavo A. R. Silva <gustavo@embeddedor.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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John Garry authored
Many times in libsas, and in LLDDs which use libsas, the check for an expander device is re-implemented or open coded. Use dev_is_expander() instead. We rename this from sas_dev_type_is_expander() to not spill so many lines in referencing. Signed-off-by:
John Garry <john.garry@huawei.com> Reviewed-by:
Jason Yan <yanaijie@huawei.com> Reviewed-by:
Jack Wang <jinpu.wang@cloud.ionos.com> Signed-off-by:
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- 18 Jun, 2019 38 commits
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Suganath Prabu S authored
Update driver version from 28.100.00.00 to 29.100.00.00 This is equivalent to Phase 10 OOB driver. Signed-off-by:
Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by:
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Suganath Prabu S authored
1. Introduce module parameter perf_mode for only Aero/Sea generation HBAs. 2. Update IOC page1 fields according to performance mode. Below are the performance modes that can be enabled with module parameter perf_mode: 0: Balanced - Few high iops reply queues will be enabled. Interrupt coalescing will be enabled only for these high iops reply descriptor queues. 1: Iops - Interrupt coalescing will be enabled on all reply queues. Coalescing timeout is set to 0x20.This is default value for Aero. 2: Latency - Interrupt coalescing will be enabled on all reply queues. Coalescing timeout is set to 0xA. This is a legacy behavior similar to Ventura & Invader HBA series. Default perf mode set by driver will be balanced mode if the following conditions are met: - CPU vendor = Intel; - Aero controller working in 16GT/s pcie speed Performance mode will be set to latency mode for all other cases. 4k Random Read IO performance numbers on 24 SAS SSD drives for above three permormance modes. Performance data is from Intel Skylake and HGST SS300 (drive model SDLL1DLR400GCCA1). IOPs: ----------------------------------------------------------------------- |perf_mode | qd = 1 | qd = 64 | note | |-------------|--------|---------|------------------------------------- |balanced | 259K | 3061k | Provides max performance numbers | | | | | both on lower QD workload & | | | | | also on higher QD workload | |-------------|--------|---------|------------------------------------- |iops | 220K | 3100k | Provides max performance numbers | | | | | only on higher QD workload. | |-------------|--------|---------|------------------------------------- |latency | 246k | 2226k | Provides good performance numbers | | | | | only on lower QD worklaod. | ----------------------------------------------------------------------- Avarage Latency: ----------------------------------------------------- |perf_mode | qd = 1 | qd = 64 | |-------------|--------------|----------------------| |balanced | 92.05 usec | 501.12 usec | |-------------|--------------|----------------------| |iops | 108.40 usec | 498.10 usec | |-------------|--------------|----------------------| |latency | 97.10 usec | 689.26 usec | ----------------------------------------------------- Signed-off-by: -
Suganath Prabu S authored
Enable interrupt coalescing only on high iops queues. In ioc config page 1, offset 0x14 (ProductSpecific field) is used to determine interrupt coalescing enabled/disabled on per reply descriptor post queue group(8) basis. If 31st bit is zero, then interrupt coalescing is enabled for all reply descriptor post queues. If 31st bit is set to one, then user can enable/disable interrupt coalescing on per reply descriptor post queue group(8) basis. So to enable interrupt coalescing only on first reply descriptor post queue group (i.e. on high iops queues), set bit 0 and 31. This configuration should reset during driver unload or shutdown to the default settings. For this, the driver takes copy of default ioc page 1 and copies back the default or unmodified ioc page1 during unload and shutdown. This means that on next driver load (e.g. if older version driver is loaded by user), current modified changes on ioc page1 won't take effect. Signed-off-by:
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Suganath Prabu S authored
High iops queues are mapped to non-managed irqs. Set affinity of non-managed irqs to local numa node. Low latency queues are mapped to managed irqs. Driver reserves some reply queues for max iops (through pci_alloc_irq_vectors_affinity and .pre_vectors interface). The rest of queues are for low latency. Based on io workload in io submission path, driver will decide which group of reply queues (either high iops queues or low latency queues) to be used. High iops queues will be mapped to local numa node of controller and low latency queues will be mapped to cpus across numa nodes. In general, high iops and low latency queues should fit into 128 reply queues which is the max number of reply queues supported by Aero/Sea. Signed-off-by:
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Suganath Prabu S authored
In the IO submission path _base_get_msix_index is called twice. Initially while getting the smid and subsequently while posting the request descriptor (RD). Refactor code to query msix index only while posting the request descriptor. Save determined msix index in msix_io field. Signed-off-by:
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Suganath Prabu S authored
The driver will use round-robin method for io submission in batches within the high iops queues when the number of in-flight ios on the target device is larger than 8. Otherwise the driver will use low latency reply queues. Signed-off-by:
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Suganath Prabu S authored
Code refactoring. In function _base_get_msix_index, add scmd as second argument. This change is made in preparation for the next patch where we introduce a new function to get the MSI-X index for high iops queues. Signed-off-by:
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Suganath Prabu S authored
Aero controllers support balanced performance mode through the ability to configure queues with different properties. Reply queues with interrupt coalescing enabled are called "high iops reply queues" and reply queues with interrupt coalescing disabled are called "low latency reply queues". The driver configures a combination of high iops and low latency reply queues if: - HBA is an AERO controller; - MSI-X vectors supported by the HBA is 128; - Total CPU count in the system more than high iops queue count; - Driver is loaded with default max_msix_vectors module parameter; and - System booted in non-kdump mode. Signed-off-by:
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Suganath Prabu S authored
If the Aero HBA supports Atomic Request Descriptors, it sets the Atomic Request Descriptor Capable bit in the IOCCapabilities field of the IOCFacts Reply message. Driver uses an Atomic Request Descriptor as an alternative method for posting an entry onto a request queue. The posting of an Atomic Request Descriptor is an atomic operation, providing a safe mechanism for multiple processors on the host to post requests without synchronization. This Atomic Request Descriptor format is identical to first 32 bits of Default Request Descriptor and uses only 32 bits. Signed-off-by:
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Suganath Prabu S authored
This code refactoring introduces function pointers. Host uses Request Descriptors of different types for posting an entry onto a request queue. Based on controller type and capabilities, host can also use atomic descriptors other than normal descriptors. Using function pointer will avoid if-else statements Signed-off-by:
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Geert Uytterhoeven authored
Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Geert Uytterhoeven authored
Signed-off-by:
Hannes Reinecke <hare@suse.com> Signed-off-by:
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YueHaibing authored
Remove including <linux/version.h> that don't need it. Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Acked-by:
Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by:
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Tomas Henzl authored
Use existing macros. No functional change. Signed-off-by:
Tomas Henzl <thenzl@redhat.com> Acked-by:
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Tomas Henzl authored
Checkpatch emits a warning when using symbolic permissions. Use octal permissions instead. No functional change. Signed-off-by:
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Tomas Henzl authored
Support is easier with all driver parameters visible in sysfs. Signed-off-by:
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warnings: drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_fw_crash_buffer_show: drivers/scsi/megaraid/megaraid_sas_base.c:3138:16: warning: variable buff_addr set but not used [-Wunused-but-set-variable] drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_get_pd_list: drivers/scsi/megaraid/megaraid_sas_base.c:4426:13: warning: variable ci_h set but not used [-Wunused-but-set-variable] 'buff_addr' is never used since inroduction in commit fc62b3fc ("megaraid_sas : Firmware crash dump feature support") 'ci_h' is not used since commit 9b3d028f ("scsi: megaraid_sas: Pre-allocate frequently used DMA buffers") Signed-off-by:
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warning: drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_create_frame_pool: drivers/scsi/megaraid/megaraid_sas_base.c:4124:6: warning: variable sge_sz set but not used [-Wunused-but-set-variable] It's not used any more since commit 200aed58 ("megaraid_sas: endianness related bug fixes and code optimization") Signed-off-by:
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Nathan Chancellor authored
When building powerpc pseries_defconfig or powernv_defconfig: drivers/scsi/lpfc/lpfc_nvmet.c:224:1: error: unused function 'lpfc_nvmet_get_ctx_for_xri' [-Werror,-Wunused-function] drivers/scsi/lpfc/lpfc_nvmet.c:246:1: error: unused function 'lpfc_nvmet_get_ctx_for_oxid' [-Werror,-Wunused-function] These functions are only compiled when CONFIG_NVME_TARGET_FC is enabled. Use that same condition so there is no more warning. While the fixes commit did not introduce these functions, it caused these warnings. Fixes: 4064b27417a7 ("scsi: lpfc: Make some symbols static") Signed-off-by:Nathan Chancellor <natechancellor@gmail.com> Acked-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
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Jack Wang authored
Lindar's email addess is bouncing for some time, just remove it. ProfitBricks was rebranded to 1 & 1 Cloud IONOS, so update my email address too. Signed-off-by:
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Nathan Chancellor authored
clang warns: drivers/scsi/ibmvscsi/ibmvscsi.c:2126:7: warning: variable 'rc' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] case IBMVSCSI_HOST_ACTION_NONE: ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ibmvscsi/ibmvscsi.c:2151:6: note: uninitialized use occurs here if (rc) { ^~ Initialize rc in the IBMVSCSI_HOST_ACTION_UNBLOCK case statement then shuffle IBMVSCSI_HOST_ACTION_NONE down to the default case statement and make it return early so that rc is never used uninitialized in this function. Fixes: 035a3c4046b5 ("scsi: ibmvscsi: redo driver work thread to use enum action states") Link: https://github.com/ClangBuiltLinux/linux/issues/502Suggested-by:Michael Ellerman <mpe@ellerman.id.au> Suggested-by:
Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by:
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YueHaibing authored
Fix sparse warnings: drivers/scsi/lpfc/lpfc_sli.c:115:1: warning: symbol 'lpfc_sli4_pcimem_bcopy' was not declared. Should it be static? drivers/scsi/lpfc/lpfc_sli.c:7854:1: warning: symbol 'lpfc_sli4_process_missed_mbox_completions' was not declared. Should it be static? drivers/scsi/lpfc/lpfc_nvmet.c:223:27: warning: symbol 'lpfc_nvmet_get_ctx_for_xri' was not declared. Should it be static? drivers/scsi/lpfc/lpfc_nvmet.c:245:27: warning: symbol 'lpfc_nvmet_get_ctx_for_oxid' was not declared. Should it be static? drivers/scsi/lpfc/lpfc_init.c:75:10: warning: symbol 'lpfc_present_cpu' was not declared. Should it be static? Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warnings: drivers/scsi/lpfc/lpfc_init.c: In function lpfc_setup_cq_lookup: drivers/scsi/lpfc/lpfc_init.c:9359:30: warning: variable qp set but not used [-Wunused-but-set-variable] It's not used since commit e70596a60f88 ("scsi: lpfc: Fix poor use of hardware queues if fewer irq vectors") Signed-off-by: -
Enzo Matsumiya authored
Remove double assignment in qla2x00_update_fcport(). Signed-off-by:
Enzo Matsumiya <ematsumiya@suse.de> Acked-by:
Himanshu Madhani <hmadhani@marvell.com> Signed-off-by:
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Xiang Chen authored
For v3 hw, stash is enabled to promote performance, but it does little to improve performance according to current tests. What's more, it causes exceptions for some situations, so disable it. Signed-off-by:
Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by:
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Luo Jiaxing authored
Several error codes will be generated between PHY down to up. This issue was introduced by HW design. The designers came to the conclusion that we should ignore these errors. Signed-off-by:
Jiaxing Luo <luojiaxing@huawei.com> Signed-off-by:
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Xiang Chen authored
It reports a error as follows from some tools at two places in our code: runtime error: left shift of 4 by 29 places cannot be represented in type 'int' So change the type of the two numbers to unsigned to avoid the error. Signed-off-by:
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John Garry authored
Macro HISI_SAS_SGE_PAGE_CNT is defined to SG_CHUNK_SIZE, which is 128. This means that sizeof(struct hisi_sas_slot_buf_table) is 4192. This is just over a 4K, which can mean inefficient DMA memory usage (for no PI). Reduce the size of HISI_SAS_SGE_PAGE_CNT to 124 to fit in a 4K page. With this change, we experience no performance hit. Cc: dann frazier <dann.frazier@canonical.com> Signed-off-by:
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Xiaofei Tan authored
The argument of dev_err() called by multi_bit_ecc_error_process_v3_hw() is not right. We pass two arguments, but there is only one printk format specifier in the string. Also move the print format string to dev_err(). Signed-off-by:
Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by:
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Xiang Chen authored
When removing the driver or when probe fails, we need to delete the PHY timers. Signed-off-by:
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Bharath Vedartham authored
Replace kmalloc + memcpy with kmemdup. This was reported by coccinelle. Signed-off-by:
Bharath Vedartham <linux.bhar@gmail.com> Signed-off-by:
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warnings: drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_suspend: drivers/scsi/megaraid/megaraid_sas_base.c:7269:20: warning: variable host set but not used [-Wunused-but-set-variable] drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_aen_polling: drivers/scsi/megaraid/megaraid_sas_base.c:8397:15: warning: variable wait_time set but not used [-Wunused-but-set-variable] 'host' never used since introduction in commit 31ea7088 ("[SCSI] megaraid_sas: add hibernation support") 'wait_time' never used since commit 11c71cb4 ("megaraid_sas: Do not allow PCI access during OCR") Signed-off-by:
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warning: drivers/scsi/megaraid/megaraid_sas_base.c: In function megasas_transition_to_ready: drivers/scsi/megaraid/megaraid_sas_base.c:3900:6: warning: variable cur_state set but not used [-Wunused-but-set-variable] Never used since commit 7218df69 ("[SCSI] megaraid_sas: use the firmware boot timeout when waiting for commands") Signed-off-by:
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Gen Zhang authored
In _ctl_ioctl_main(), 'ioctl_header' is fetched the first time from userspace. 'ioctl_header.ioc_number' is then checked. The legal result is saved to 'ioc'. Then, in condition MPT3COMMAND, the whole struct is fetched again from the userspace. Then _ctl_do_mpt_command() is called, 'ioc' and 'karg' as inputs. However, a malicious user can change the 'ioc_number' between the two fetches, which will cause a potential security issues. Moreover, a malicious user can provide a valid 'ioc_number' to pass the check in first fetch, and then modify it in the second fetch. To fix this, we need to recheck the 'ioc_number' in the second fetch. Signed-off-by:
Gen Zhang <blackgod016574@gmail.com> Acked-by:
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Stanley Chu authored
Currently auto-hibernate is activated if host supports auto-hibern8 capability. However error-handling is not implemented, which makes the feature somewhat risky. If either "Hibernate Enter" or "Hibernate Exit" fail during auto-hibernate flow, the corresponding interrupt "UIC_HIBERNATE_ENTER" or "UIC_HIBERNATE_EXIT" shall be raised according to UFS specification. This patch adds auto-hibernate error-handling: - Monitor "Hibernate Enter" and "Hibernate Exit" interrupts after auto-hibernate feature is activated. - If a failure happens, trigger error-handling just like "manual-hibernate" failure and apply the same recovery flow: schedule UFS error handler in ufshcd_check_errors(), and then do host reset and restore in UFS error handler. Signed-off-by:
Stanley Chu <stanley.chu@mediatek.com> Reviewed-by:
Bean Huo <beanhuo@micron.com> Reviewed-by:
Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by:
Avri Altman <Avri.Altman@wdc.com> Signed-off-by:
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Stanley Chu authored
Some vendor-specific initialization flow may set its own auto-hibernate timer. In this case, do not overwrite timer value as "default value" in ufshcd_init(). Signed-off-by:
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Stanley Chu authored
The checking of Auto-Hibernation support is used in many places in the driver, thus re-factor it as ufshcd_is_auto_hibern8_supported() to make code more clean. Signed-off-by:
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Jason Yan authored
Since we are processing events synchronously now, the second call of sas_ex_join_wide_port() in sas_ex_discover_dev() is not needed. There will be no races with other works in disco workqueue. So remove the second sas_ex_join_wide_port(). I did not change the return value of 'res' to error when discover failed because we need to continue to discover other phys if one phy discover failed. So let's keep that logic as before and just add a debug log to detect the failure. And directly return if second fanout expander attatched to the parent expander because it has nothing to do after the phy is disabled. Signed-off-by:
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