| Message ID | 20231227110610.18276-2-ranjan.kumar@broadcom.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | mpt3sas: Update/reload SBR without rebooting HBA | expand |
Hi Ranjan,
kernel test robot noticed the following build warnings:
[auto build test WARNING on jejb-scsi/for-next]
[also build test WARNING on mkp-scsi/for-next linus/master v6.7-rc7 next-20231222]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Ranjan-Kumar/mpt3sas-Reload-SBR-without-rebooting-HBA/20231227-191013
base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
patch link: https://lore.kernel.org/r/20231227110610.18276-2-ranjan.kumar%40broadcom.com
patch subject: [PATCH v2 1/2] mpt3sas: Reload SBR without rebooting HBA
config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20231228/202312280909.MZyhxwBL-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231228/202312280909.MZyhxwBL-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312280909.MZyhxwBL-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/scsi/mpt3sas/mpt3sas_base.c:8025:4: warning: misleading indentation; statement is not part of the previous 'if' [-Wmisleading-indentation]
8025 | msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC/1000);
| ^
drivers/scsi/mpt3sas/mpt3sas_base.c:8021:3: note: previous statement is here
8021 | if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
| ^
1 warning generated.
vim +/if +8025 drivers/scsi/mpt3sas/mpt3sas_base.c
2af5cddbc76400 Ranjan Kumar 2023-12-27 7976
2af5cddbc76400 Ranjan Kumar 2023-12-27 7977 /**
2af5cddbc76400 Ranjan Kumar 2023-12-27 7978 * _base_diag_reset - the "big hammer" start of day reset
2af5cddbc76400 Ranjan Kumar 2023-12-27 7979 * @ioc: per adapter object
2af5cddbc76400 Ranjan Kumar 2023-12-27 7980 *
2af5cddbc76400 Ranjan Kumar 2023-12-27 7981 * Return: 0 for success, non-zero for failure.
2af5cddbc76400 Ranjan Kumar 2023-12-27 7982 */
2af5cddbc76400 Ranjan Kumar 2023-12-27 7983 static int
2af5cddbc76400 Ranjan Kumar 2023-12-27 7984 _base_diag_reset(struct MPT3SAS_ADAPTER *ioc)
2af5cddbc76400 Ranjan Kumar 2023-12-27 7985 {
2af5cddbc76400 Ranjan Kumar 2023-12-27 7986 u32 host_diagnostic;
2af5cddbc76400 Ranjan Kumar 2023-12-27 7987 u32 ioc_state;
2af5cddbc76400 Ranjan Kumar 2023-12-27 7988 u32 count;
2af5cddbc76400 Ranjan Kumar 2023-12-27 7989 u32 hcb_size;
2af5cddbc76400 Ranjan Kumar 2023-12-27 7990
2af5cddbc76400 Ranjan Kumar 2023-12-27 7991 ioc_info(ioc, "sending diag reset !!\n");
2af5cddbc76400 Ranjan Kumar 2023-12-27 7992
2af5cddbc76400 Ranjan Kumar 2023-12-27 7993 pci_cfg_access_lock(ioc->pdev);
f92363d1235949 Sreekanth Reddy 2012-11-30 7994
2af5cddbc76400 Ranjan Kumar 2023-12-27 7995 drsprintk(ioc, ioc_info(ioc, "clear interrupts\n"));
2af5cddbc76400 Ranjan Kumar 2023-12-27 7996
2af5cddbc76400 Ranjan Kumar 2023-12-27 7997 mutex_lock(&ioc->hostdiag_unlock_mutex);
2af5cddbc76400 Ranjan Kumar 2023-12-27 7998 if (mpt3sas_base_unlock_and_get_host_diagnostic(ioc, &host_diagnostic))
2af5cddbc76400 Ranjan Kumar 2023-12-27 7999 goto out;
2af5cddbc76400 Ranjan Kumar 2023-12-27 8000
2af5cddbc76400 Ranjan Kumar 2023-12-27 8001 hcb_size = ioc->base_readl(&ioc->chip->HCBSize);
919d8a3f3fef99 Joe Perches 2018-09-17 8002 drsprintk(ioc, ioc_info(ioc, "diag reset: issued\n"));
f92363d1235949 Sreekanth Reddy 2012-11-30 8003 writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
f92363d1235949 Sreekanth Reddy 2012-11-30 8004 &ioc->chip->HostDiagnostic);
f92363d1235949 Sreekanth Reddy 2012-11-30 8005
b453ff84de6caf Sreekanth Reddy 2013-06-29 8006 /* This delay allows the chip PCIe hardware time to finish reset tasks */
b453ff84de6caf Sreekanth Reddy 2013-06-29 8007 msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
f92363d1235949 Sreekanth Reddy 2012-11-30 8008
b453ff84de6caf Sreekanth Reddy 2013-06-29 8009 /* Approximately 300 second max wait */
b453ff84de6caf Sreekanth Reddy 2013-06-29 8010 for (count = 0; count < (300000000 /
b453ff84de6caf Sreekanth Reddy 2013-06-29 8011 MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) {
f92363d1235949 Sreekanth Reddy 2012-11-30 8012
4ca10f3e31745d Ranjan Kumar 2023-08-29 8013 host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic);
f92363d1235949 Sreekanth Reddy 2012-11-30 8014
5b061980e36282 Sreekanth Reddy 2019-12-26 8015 if (host_diagnostic == 0xFFFFFFFF) {
5b061980e36282 Sreekanth Reddy 2019-12-26 8016 ioc_info(ioc,
5b061980e36282 Sreekanth Reddy 2019-12-26 8017 "Invalid host diagnostic register value\n");
af6ec1eee5ed68 Suganath Prabu S 2020-07-30 8018 _base_dump_reg_set(ioc);
f92363d1235949 Sreekanth Reddy 2012-11-30 8019 goto out;
5b061980e36282 Sreekanth Reddy 2019-12-26 8020 }
f92363d1235949 Sreekanth Reddy 2012-11-30 8021 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
f92363d1235949 Sreekanth Reddy 2012-11-30 8022 break;
f92363d1235949 Sreekanth Reddy 2012-11-30 8023
2af5cddbc76400 Ranjan Kumar 2023-12-27 8024 /* Wait to pass the second read delay window */
98c56ad32c33f0 Calvin Owens 2016-07-28 @8025 msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC/1000);
f92363d1235949 Sreekanth Reddy 2012-11-30 8026 }
f92363d1235949 Sreekanth Reddy 2012-11-30 8027
f92363d1235949 Sreekanth Reddy 2012-11-30 8028 if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
f92363d1235949 Sreekanth Reddy 2012-11-30 8029
919d8a3f3fef99 Joe Perches 2018-09-17 8030 drsprintk(ioc,
2af5cddbc76400 Ranjan Kumar 2023-12-27 8031 ioc_info(ioc, "restart the adapter assuming the\n"
2af5cddbc76400 Ranjan Kumar 2023-12-27 8032 "HCB Address points to good F/W\n"));
f92363d1235949 Sreekanth Reddy 2012-11-30 8033 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
f92363d1235949 Sreekanth Reddy 2012-11-30 8034 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
f92363d1235949 Sreekanth Reddy 2012-11-30 8035 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
f92363d1235949 Sreekanth Reddy 2012-11-30 8036
919d8a3f3fef99 Joe Perches 2018-09-17 8037 drsprintk(ioc, ioc_info(ioc, "re-enable the HCDW\n"));
f92363d1235949 Sreekanth Reddy 2012-11-30 8038 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
f92363d1235949 Sreekanth Reddy 2012-11-30 8039 &ioc->chip->HCBSize);
f92363d1235949 Sreekanth Reddy 2012-11-30 8040 }
f92363d1235949 Sreekanth Reddy 2012-11-30 8041
919d8a3f3fef99 Joe Perches 2018-09-17 8042 drsprintk(ioc, ioc_info(ioc, "restart the adapter\n"));
f92363d1235949 Sreekanth Reddy 2012-11-30 8043 writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
f92363d1235949 Sreekanth Reddy 2012-11-30 8044 &ioc->chip->HostDiagnostic);
f92363d1235949 Sreekanth Reddy 2012-11-30 8045
2af5cddbc76400 Ranjan Kumar 2023-12-27 8046 mpt3sas_base_lock_host_diagnostic(ioc);
2af5cddbc76400 Ranjan Kumar 2023-12-27 8047 mutex_unlock(&ioc->hostdiag_unlock_mutex);
f92363d1235949 Sreekanth Reddy 2012-11-30 8048
919d8a3f3fef99 Joe Perches 2018-09-17 8049 drsprintk(ioc, ioc_info(ioc, "Wait for FW to go to the READY state\n"));
98c56ad32c33f0 Calvin Owens 2016-07-28 8050 ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20);
f92363d1235949 Sreekanth Reddy 2012-11-30 8051 if (ioc_state) {
919d8a3f3fef99 Joe Perches 2018-09-17 8052 ioc_err(ioc, "%s: failed going to ready state (ioc_state=0x%x)\n",
919d8a3f3fef99 Joe Perches 2018-09-17 8053 __func__, ioc_state);
af6ec1eee5ed68 Suganath Prabu S 2020-07-30 8054 _base_dump_reg_set(ioc);
f92363d1235949 Sreekanth Reddy 2012-11-30 8055 goto out;
f92363d1235949 Sreekanth Reddy 2012-11-30 8056 }
f92363d1235949 Sreekanth Reddy 2012-11-30 8057
3c8604691d2acc Sreekanth Reddy 2021-03-30 8058 pci_cfg_access_unlock(ioc->pdev);
919d8a3f3fef99 Joe Perches 2018-09-17 8059 ioc_info(ioc, "diag reset: SUCCESS\n");
f92363d1235949 Sreekanth Reddy 2012-11-30 8060 return 0;
f92363d1235949 Sreekanth Reddy 2012-11-30 8061
f92363d1235949 Sreekanth Reddy 2012-11-30 8062 out:
3c8604691d2acc Sreekanth Reddy 2021-03-30 8063 pci_cfg_access_unlock(ioc->pdev);
919d8a3f3fef99 Joe Perches 2018-09-17 8064 ioc_err(ioc, "diag reset: FAILED\n");
2af5cddbc76400 Ranjan Kumar 2023-12-27 8065 mutex_unlock(&ioc->hostdiag_unlock_mutex);
f92363d1235949 Sreekanth Reddy 2012-11-30 8066 return -EFAULT;
f92363d1235949 Sreekanth Reddy 2012-11-30 8067 }
f92363d1235949 Sreekanth Reddy 2012-11-30 8068
Hi Ranjan, kernel test robot noticed the following build warnings: [auto build test WARNING on jejb-scsi/for-next] [also build test WARNING on mkp-scsi/for-next linus/master v6.7-rc7 next-20231222] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Ranjan-Kumar/mpt3sas-Reload-SBR-without-rebooting-HBA/20231227-191013 base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next patch link: https://lore.kernel.org/r/20231227110610.18276-2-ranjan.kumar%40broadcom.com patch subject: [PATCH v2 1/2] mpt3sas: Reload SBR without rebooting HBA config: x86_64-randconfig-161-20231228 (https://download.01.org/0day-ci/archive/20231228/202312281141.jDyPezRn-lkp@intel.com/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231228/202312281141.jDyPezRn-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202312281141.jDyPezRn-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/scsi/mpt3sas/mpt3sas_ctl.c:2555: warning: Function parameter or member 'arg' not described in '_ctl_enable_diag_sbr_reload' vim +2555 drivers/scsi/mpt3sas/mpt3sas_ctl.c 2545 2546 /** 2547 * _ctl_enable_diag_sbr_reload - enable sbr reload bit 2548 * @ioc: per adapter object 2549 * @arg - user space buffer containing ioctl content 2550 * 2551 * Enable the SBR reload bit 2552 */ 2553 static int 2554 _ctl_enable_diag_sbr_reload(struct MPT3SAS_ADAPTER *ioc, void __user *arg) > 2555 { 2556 u32 ioc_state, host_diagnostic; 2557 2558 if (ioc->shost_recovery || 2559 ioc->pci_error_recovery || ioc->is_driver_loading || 2560 ioc->remove_host) 2561 return -EAGAIN; 2562 2563 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 2564 2565 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) 2566 return -EFAULT; 2567 2568 host_diagnostic = ioc->base_readl(&ioc->chip->HostDiagnostic); 2569 2570 if (host_diagnostic & MPI2_DIAG_SBR_RELOAD) 2571 return 0; 2572 2573 if (mutex_trylock(&ioc->hostdiag_unlock_mutex)) { 2574 if (mpt3sas_base_unlock_and_get_host_diagnostic(ioc, &host_diagnostic)) { 2575 mutex_unlock(&ioc->hostdiag_unlock_mutex); 2576 return -EFAULT; 2577 } 2578 } else 2579 return -EAGAIN; 2580 2581 host_diagnostic |= MPI2_DIAG_SBR_RELOAD; 2582 writel(host_diagnostic, &ioc->chip->HostDiagnostic); 2583 host_diagnostic = ioc->base_readl(&ioc->chip->HostDiagnostic); 2584 mpt3sas_base_lock_host_diagnostic(ioc); 2585 mutex_unlock(&ioc->hostdiag_unlock_mutex); 2586 2587 if (!(host_diagnostic & MPI2_DIAG_SBR_RELOAD)) { 2588 ioc_err(ioc, "%s: Failed to set Diag SBR Reload Bit\n", __func__); 2589 return -EFAULT; 2590 } 2591 2592 ioc_info(ioc, "%s: Successfully set the Diag SBR Reload Bit\n", __func__); 2593 return 0; 2594 } 2595
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index 8761bc58d965..da1497cadeb1 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -7914,26 +7914,22 @@ mpt3sas_base_validate_event_type(struct MPT3SAS_ADAPTER *ioc, u32 *event_type) } /** - * _base_diag_reset - the "big hammer" start of day reset - * @ioc: per adapter object - * - * Return: 0 for success, non-zero for failure. - */ -static int -_base_diag_reset(struct MPT3SAS_ADAPTER *ioc) -{ - u32 host_diagnostic; - u32 ioc_state; - u32 count; - u32 hcb_size; - - ioc_info(ioc, "sending diag reset !!\n"); - - pci_cfg_access_lock(ioc->pdev); +* mpt3sas_base_unlock_and_get_host_diagnostic- enable Host Diagnostic Register writes +* @ioc: per adapter object +* @host_diagnostic: host diagnostic register content +* +* Return: 0 for success, non-zero for failure. +*/ - drsprintk(ioc, ioc_info(ioc, "clear interrupts\n")); +int +mpt3sas_base_unlock_and_get_host_diagnostic(struct MPT3SAS_ADAPTER *ioc, + u32 *host_diagnostic) +{ + u32 count; + *host_diagnostic = 0; count = 0; + do { /* Write magic sequence to WriteSequence register * Loop until in diagnostic mode @@ -7952,30 +7948,67 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) if (count++ > 20) { ioc_info(ioc, - "Stop writing magic sequence after 20 retries\n"); + "Stop writing magic sequence after 20 retries\n"); _base_dump_reg_set(ioc); - goto out; + return -EFAULT; } - host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic); + *host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic); drsprintk(ioc, - ioc_info(ioc, "wrote magic sequence: count(%d), host_diagnostic(0x%08x)\n", - count, host_diagnostic)); + ioc_info(ioc, "wrote magic sequence: count(%d), host_diagnostic(0x%08x)\n", + count, *host_diagnostic)); - } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0); + } while ((*host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0); + return 0; +} - hcb_size = ioc->base_readl(&ioc->chip->HCBSize); +/** + * mpt3sas_base_lock_host_diagnostic: Disable Host Diagnostic Register writes + * @ioc: per adapter object + */ +void +mpt3sas_base_lock_host_diagnostic(struct MPT3SAS_ADAPTER *ioc) +{ + drsprintk(ioc, ioc_info(ioc, "disable writes to the diagnostic register\n")); + writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence); +} + +/** + * _base_diag_reset - the "big hammer" start of day reset + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_diag_reset(struct MPT3SAS_ADAPTER *ioc) +{ + u32 host_diagnostic; + u32 ioc_state; + u32 count; + u32 hcb_size; + + ioc_info(ioc, "sending diag reset !!\n"); + + pci_cfg_access_lock(ioc->pdev); + + drsprintk(ioc, ioc_info(ioc, "clear interrupts\n")); + + mutex_lock(&ioc->hostdiag_unlock_mutex); + if (mpt3sas_base_unlock_and_get_host_diagnostic(ioc, &host_diagnostic)) + goto out; + + hcb_size = ioc->base_readl(&ioc->chip->HCBSize); drsprintk(ioc, ioc_info(ioc, "diag reset: issued\n")); writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER, &ioc->chip->HostDiagnostic); - /*This delay allows the chip PCIe hardware time to finish reset tasks*/ + /* This delay allows the chip PCIe hardware time to finish reset tasks */ msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000); /* Approximately 300 second max wait */ for (count = 0; count < (300000000 / - MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) { + MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) { host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic); @@ -7988,13 +8021,15 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER)) break; - msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC / 1000); + /* Wait to pass the second read delay window */ + msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC/1000); } if (host_diagnostic & MPI2_DIAG_HCB_MODE) { drsprintk(ioc, - ioc_info(ioc, "restart the adapter assuming the HCB Address points to good F/W\n")); + ioc_info(ioc, "restart the adapter assuming the\n" + "HCB Address points to good F/W\n")); host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK; host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW; writel(host_diagnostic, &ioc->chip->HostDiagnostic); @@ -8008,9 +8043,8 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET, &ioc->chip->HostDiagnostic); - drsprintk(ioc, - ioc_info(ioc, "disable writes to the diagnostic register\n")); - writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence); + mpt3sas_base_lock_host_diagnostic(ioc); + mutex_unlock(&ioc->hostdiag_unlock_mutex); drsprintk(ioc, ioc_info(ioc, "Wait for FW to go to the READY state\n")); ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20); @@ -8028,6 +8062,7 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) out: pci_cfg_access_unlock(ioc->pdev); ioc_err(ioc, "diag reset: FAILED\n"); + mutex_unlock(&ioc->hostdiag_unlock_mutex); return -EFAULT; } diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 6d0bc8c66700..de60ef8a7908 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -1366,6 +1366,7 @@ struct MPT3SAS_ADAPTER { u8 got_task_abort_from_ioctl; struct mutex reset_in_progress_mutex; + struct mutex hostdiag_unlock_mutex; spinlock_t ioc_reset_in_progress_lock; u8 ioc_link_reset_in_progress; @@ -1790,6 +1791,9 @@ void mpt3sas_base_disable_msix(struct MPT3SAS_ADAPTER *ioc); int mpt3sas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num); void mpt3sas_base_pause_mq_polling(struct MPT3SAS_ADAPTER *ioc); void mpt3sas_base_resume_mq_polling(struct MPT3SAS_ADAPTER *ioc); +int mpt3sas_base_unlock_and_get_host_diagnostic(struct MPT3SAS_ADAPTER *ioc, + u32 *host_diagnostic); +void mpt3sas_base_lock_host_diagnostic(struct MPT3SAS_ADAPTER *ioc); /* scsih shared API */ struct scsi_cmnd *mpt3sas_scsih_scsi_lookup_get(struct MPT3SAS_ADAPTER *ioc, diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index 147cb7088d55..5299dc297c04 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -2543,6 +2543,56 @@ _ctl_addnl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg) return 0; } +/** + * _ctl_enable_diag_sbr_reload - enable sbr reload bit + * @ioc: per adapter object + * @arg - user space buffer containing ioctl content + * + * Enable the SBR reload bit + */ +static int +_ctl_enable_diag_sbr_reload(struct MPT3SAS_ADAPTER *ioc, void __user *arg) +{ + u32 ioc_state, host_diagnostic; + + if (ioc->shost_recovery || + ioc->pci_error_recovery || ioc->is_driver_loading || + ioc->remove_host) + return -EAGAIN; + + ioc_state = mpt3sas_base_get_iocstate(ioc, 1); + + if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) + return -EFAULT; + + host_diagnostic = ioc->base_readl(&ioc->chip->HostDiagnostic); + + if (host_diagnostic & MPI2_DIAG_SBR_RELOAD) + return 0; + + if (mutex_trylock(&ioc->hostdiag_unlock_mutex)) { + if (mpt3sas_base_unlock_and_get_host_diagnostic(ioc, &host_diagnostic)) { + mutex_unlock(&ioc->hostdiag_unlock_mutex); + return -EFAULT; + } + } else + return -EAGAIN; + + host_diagnostic |= MPI2_DIAG_SBR_RELOAD; + writel(host_diagnostic, &ioc->chip->HostDiagnostic); + host_diagnostic = ioc->base_readl(&ioc->chip->HostDiagnostic); + mpt3sas_base_lock_host_diagnostic(ioc); + mutex_unlock(&ioc->hostdiag_unlock_mutex); + + if (!(host_diagnostic & MPI2_DIAG_SBR_RELOAD)) { + ioc_err(ioc, "%s: Failed to set Diag SBR Reload Bit\n", __func__); + return -EFAULT; + } + + ioc_info(ioc, "%s: Successfully set the Diag SBR Reload Bit\n", __func__); + return 0; +} + #ifdef CONFIG_COMPAT /** * _ctl_compat_mpt_command - convert 32bit pointers to 64bit. @@ -2719,6 +2769,10 @@ _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg, if (_IOC_SIZE(cmd) == sizeof(struct mpt3_addnl_diag_query)) ret = _ctl_addnl_diag_query(ioc, arg); break; + case MPT3ENABLEDIAGSBRRELOAD: + if (_IOC_SIZE(cmd) == sizeof(struct mpt3_enable_diag_sbr_reload)) + ret = _ctl_enable_diag_sbr_reload(ioc, arg); + break; default: dctlprintk(ioc, ioc_info(ioc, "unsupported ioctl opcode(0x%08x)\n", diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.h b/drivers/scsi/mpt3sas/mpt3sas_ctl.h index 8f6ffb40261c..171709e91006 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.h +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.h @@ -98,6 +98,8 @@ struct mpt3_diag_read_buffer) #define MPT3ADDNLDIAGQUERY _IOWR(MPT3_MAGIC_NUMBER, 32, \ struct mpt3_addnl_diag_query) +#define MPT3ENABLEDIAGSBRRELOAD _IOWR(MPT3_MAGIC_NUMBER, 33, \ + struct mpt3_enable_diag_sbr_reload) /* Trace Buffer default UniqueId */ #define MPT2DIAGBUFFUNIQUEID (0x07075900) @@ -448,4 +450,12 @@ struct mpt3_addnl_diag_query { uint32_t reserved2[2]; }; +/** + * struct mpt3_enable_diag_sbr_reload - enable sbr reload + * @hdr - generic header + */ +struct mpt3_enable_diag_sbr_reload { + struct mpt3_ioctl_header hdr; +}; + #endif /* MPT3SAS_CTL_H_INCLUDED */ diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 51b5788da040..ef8ee93005ea 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -12240,6 +12240,7 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* misc semaphores and spin locks */ mutex_init(&ioc->reset_in_progress_mutex); + mutex_init(&ioc->hostdiag_unlock_mutex); /* initializing pci_access_mutex lock */ mutex_init(&ioc->pci_access_mutex); spin_lock_init(&ioc->ioc_reset_in_progress_lock);
Added a new IOCTL command MPT3ENABLEDIAGSBRRELOAD. As a part of firmware update operation, applications use this IOCTL command to set the SBR reload bit in the Host Diagnostic register. So that HBA firmware is updated without power-cycling the system. Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com> --- drivers/scsi/mpt3sas/mpt3sas_base.c | 97 +++++++++++++++++++--------- drivers/scsi/mpt3sas/mpt3sas_base.h | 4 ++ drivers/scsi/mpt3sas/mpt3sas_ctl.c | 54 ++++++++++++++++ drivers/scsi/mpt3sas/mpt3sas_ctl.h | 10 +++ drivers/scsi/mpt3sas/mpt3sas_scsih.c | 1 + 5 files changed, 135 insertions(+), 31 deletions(-)