diff options
| -rw-r--r-- | drivers/scsi/mpt3sas/Makefile | 3 | ||||
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_base.h | 18 | ||||
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_debugfs.c | 158 | ||||
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_scsih.c | 4 |
4 files changed, 179 insertions, 4 deletions
diff --git a/drivers/scsi/mpt3sas/Makefile b/drivers/scsi/mpt3sas/Makefile index 84fb3fbdb0ca..e76d994dbed3 100644 --- a/drivers/scsi/mpt3sas/Makefile +++ b/drivers/scsi/mpt3sas/Makefile @@ -7,4 +7,5 @@ mpt3sas-y += mpt3sas_base.o \ mpt3sas_transport.o \ mpt3sas_ctl.o \ mpt3sas_trigger_diag.o \ - mpt3sas_warpdrive.o + mpt3sas_warpdrive.o \ + mpt3sas_debugfs.o \ diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index c5743792bbfb..4fca3939c034 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -76,9 +76,9 @@ #define MPT3SAS_DRIVER_NAME "mpt3sas" #define MPT3SAS_AUTHOR "Avago Technologies <MPT-FusionLinux.pdl@avagotech.com>" #define MPT3SAS_DESCRIPTION "LSI MPT Fusion SAS 3.0 Device Driver" -#define MPT3SAS_DRIVER_VERSION "33.101.00.00" -#define MPT3SAS_MAJOR_VERSION 33 -#define MPT3SAS_MINOR_VERSION 101 +#define MPT3SAS_DRIVER_VERSION "34.100.00.00" +#define MPT3SAS_MAJOR_VERSION 34 +#define MPT3SAS_MINOR_VERSION 100 #define MPT3SAS_BUILD_VERSION 0 #define MPT3SAS_RELEASE_VERSION 00 @@ -1472,6 +1472,8 @@ struct MPT3SAS_ADAPTER { u16 device_remove_in_progress_sz; u8 is_gen35_ioc; u8 is_aero_ioc; + struct dentry *debugfs_root; + struct dentry *ioc_dump; PUT_SMID_IO_FP_HIP put_smid_scsi_io; PUT_SMID_IO_FP_HIP put_smid_fast_path; PUT_SMID_IO_FP_HIP put_smid_hi_priority; @@ -1479,6 +1481,11 @@ struct MPT3SAS_ADAPTER { GET_MSIX_INDEX get_msix_index_for_smlio; }; +struct mpt3sas_debugfs_buffer { + void *buf; + u32 len; +}; + #define MPT_DRV_SUPPORT_BITMAP_MEMMOVE 0x00000001 typedef u8 (*MPT_CALLBACK)(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, @@ -1782,6 +1789,11 @@ mpt3sas_setup_direct_io(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, /* NCQ Prio Handling Check */ bool scsih_ncq_prio_supp(struct scsi_device *sdev); +void mpt3sas_setup_debugfs(struct MPT3SAS_ADAPTER *ioc); +void mpt3sas_destroy_debugfs(struct MPT3SAS_ADAPTER *ioc); +void mpt3sas_init_debugfs(void); +void mpt3sas_exit_debugfs(void); + /** * _scsih_is_pcie_scsi_device - determines if device is an pcie scsi device * @device_info: bitfield providing information about the device. diff --git a/drivers/scsi/mpt3sas/mpt3sas_debugfs.c b/drivers/scsi/mpt3sas/mpt3sas_debugfs.c new file mode 100644 index 000000000000..48095d8aef95 --- /dev/null +++ b/drivers/scsi/mpt3sas/mpt3sas_debugfs.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Debugfs interface Support for MPT (Message Passing Technology) based + * controllers. + * + * Copyright (C) 2020 Broadcom Inc. + * + * Authors: Broadcom Inc. + * Sreekanth Reddy <sreekanth.reddy@broadcom.com> + * Suganath Prabu <suganath-prabu.subramani@broadcom.com> + * + * Send feedback to : MPT-FusionLinux.pdl@broadcom.com) + * + **/ + +#include <linux/version.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/compat.h> +#include <linux/uio.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include "mpt3sas_base.h" +#include <linux/debugfs.h> + +static struct dentry *mpt3sas_debugfs_root; + +/* + * _debugfs_iocdump_read - copy ioc dump from debugfs buffer + * @filep: File Pointer + * @ubuf: Buffer to fill data + * @cnt: Length of the buffer + * @ppos: Offset in the file + */ + +static ssize_t +_debugfs_iocdump_read(struct file *filp, char __user *ubuf, size_t cnt, + loff_t *ppos) + +{ + struct mpt3sas_debugfs_buffer *debug = filp->private_data; + + if (!debug || !debug->buf) + return 0; + + return simple_read_from_buffer(ubuf, cnt, ppos, debug->buf, debug->len); +} + +/* + * _debugfs_iocdump_open : open the ioc_dump debugfs attribute file + */ +static int +_debugfs_iocdump_open(struct inode *inode, struct file *file) +{ + struct MPT3SAS_ADAPTER *ioc = inode->i_private; + struct mpt3sas_debugfs_buffer *debug; + + debug = kzalloc(sizeof(struct mpt3sas_debugfs_buffer), GFP_KERNEL); + if (!debug) + return -ENOMEM; + + debug->buf = (void *)ioc; + debug->len = sizeof(struct MPT3SAS_ADAPTER); + file->private_data = debug; + return 0; +} + +/* + * _debugfs_iocdump_release : release the ioc_dump debugfs attribute + * @inode: inode structure to the corresponds device + * @file: File pointer + */ +static int +_debugfs_iocdump_release(struct inode *inode, struct file *file) +{ + struct mpt3sas_debugfs_buffer *debug = file->private_data; + + if (!debug) + return 0; + + file->private_data = NULL; + kfree(debug); + return 0; +} + +static const struct file_operations mpt3sas_debugfs_iocdump_fops = { + .owner = THIS_MODULE, + .open = _debugfs_iocdump_open, + .read = _debugfs_iocdump_read, + .release = _debugfs_iocdump_release, +}; + +/* + * mpt3sas_init_debugfs : Create debugfs root for mpt3sas driver + */ +void mpt3sas_init_debugfs(void) +{ + mpt3sas_debugfs_root = debugfs_create_dir("mpt3sas", NULL); + if (!mpt3sas_debugfs_root) + pr_info("mpt3sas: Cannot create debugfs root\n"); +} + +/* + * mpt3sas_exit_debugfs : Remove debugfs root for mpt3sas driver + */ +void mpt3sas_exit_debugfs(void) +{ + debugfs_remove_recursive(mpt3sas_debugfs_root); +} + +/* + * mpt3sas_setup_debugfs : Setup debugfs per HBA adapter + * ioc: MPT3SAS_ADAPTER object + */ +void +mpt3sas_setup_debugfs(struct MPT3SAS_ADAPTER *ioc) +{ + char name[64]; + + snprintf(name, sizeof(name), "scsi_host%d", ioc->shost->host_no); + if (!ioc->debugfs_root) { + ioc->debugfs_root = + debugfs_create_dir(name, mpt3sas_debugfs_root); + if (!ioc->debugfs_root) { + dev_err(&ioc->pdev->dev, + "Cannot create per adapter debugfs directory\n"); + return; + } + } + + snprintf(name, sizeof(name), "ioc_dump"); + ioc->ioc_dump = debugfs_create_file(name, 0444, + ioc->debugfs_root, ioc, &mpt3sas_debugfs_iocdump_fops); + if (!ioc->ioc_dump) { + dev_err(&ioc->pdev->dev, + "Cannot create ioc_dump debugfs file\n"); + debugfs_remove(ioc->debugfs_root); + return; + } + + snprintf(name, sizeof(name), "host_recovery"); + debugfs_create_u8(name, 0444, ioc->debugfs_root, &ioc->shost_recovery); + +} + +/* + * mpt3sas_destroy_debugfs : Destroy debugfs per HBA adapter + * @ioc: MPT3SAS_ADAPTER object + */ +void mpt3sas_destroy_debugfs(struct MPT3SAS_ADAPTER *ioc) +{ + debugfs_remove_recursive(ioc->debugfs_root); +} + diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 04a40afe60e3..6b84a83f1720 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -9928,6 +9928,7 @@ static void scsih_remove(struct pci_dev *pdev) &ioc->ioc_pg1_copy); /* release all the volumes */ _scsih_ir_shutdown(ioc); + mpt3sas_destroy_debugfs(ioc); sas_remove_host(shost); list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list, list) { @@ -10814,6 +10815,7 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) } scsi_scan_host(shost); + mpt3sas_setup_debugfs(ioc); return 0; out_add_shost_fail: mpt3sas_base_detach(ioc); @@ -11220,6 +11222,7 @@ scsih_init(void) tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler( _scsih_sas_control_complete); + mpt3sas_init_debugfs(); return 0; } @@ -11251,6 +11254,7 @@ scsih_exit(void) if (hbas_to_enumerate != 2) raid_class_release(mpt2sas_raid_template); sas_release_transport(mpt3sas_transport_template); + mpt3sas_exit_debugfs(); } /** |