/* define lock for aen poll */
spinlock_t poll_aen_lock;
+extern struct dentry *megasas_debugfs_root;
+extern void megasas_init_debugfs(void);
+extern void megasas_exit_debugfs(void);
+extern void megasas_setup_debugfs(struct megasas_instance *instance);
+extern void megasas_destroy_debugfs(struct megasas_instance *instance);
+
void
megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
u8 alt_status);
goto fail_start_aen;
}
+ megasas_setup_debugfs(instance);
+
/* Get current SR-IOV LD/VF affiliation */
if (instance->requestorId)
megasas_get_ld_vf_affiliation(instance, 1);
megasas_free_ctrl_mem(instance);
+ megasas_destroy_debugfs(instance);
+
scsi_host_put(host);
pci_disable_device(pdev);
megasas_mgmt_majorno = rval;
+ megasas_init_debugfs();
+
/*
* Register ourselves as PCI hotplug module
*/
err_dcf_attr_ver:
pci_unregister_driver(&megasas_pci_driver);
err_pcidrv:
+ megasas_exit_debugfs();
unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
return rval;
}
&driver_attr_support_nvme_encapsulation);
pci_unregister_driver(&megasas_pci_driver);
+ megasas_exit_debugfs();
unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
}
--- /dev/null
+/*
+ * Linux MegaRAID driver for SAS based RAID controllers
+ *
+ * Copyright (c) 2003-2018 LSI Corporation.
+ * Copyright (c) 2003-2018 Avago Technologies.
+ * Copyright (c) 2003-2018 Broadcom Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Broadcom Inc.
+ * Kashyap Desai <kashyap.desai@broadcom.com>
+ * Sumit Saxena <sumit.saxena@broadcom.com>
+ * Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
+ *
+ * Send feedback to: megaraidlinux.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/irq_poll.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+
+#include "megaraid_sas_fusion.h"
+#include "megaraid_sas.h"
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+
+struct dentry *megasas_debugfs_root;
+
+static ssize_t
+megasas_debugfs_read(struct file *filp, char __user *ubuf, size_t cnt,
+ loff_t *ppos)
+{
+ struct megasas_debugfs_buffer *debug = filp->private_data;
+
+ if (!debug || !debug->buf)
+ return 0;
+
+ return simple_read_from_buffer(ubuf, cnt, ppos, debug->buf, debug->len);
+}
+
+static int
+megasas_debugfs_raidmap_open(struct inode *inode, struct file *file)
+{
+ struct megasas_instance *instance = inode->i_private;
+ struct megasas_debugfs_buffer *debug;
+ struct fusion_context *fusion;
+
+ fusion = instance->ctrl_context;
+
+ debug = kzalloc(sizeof(struct megasas_debugfs_buffer), GFP_KERNEL);
+ if (!debug)
+ return -ENOMEM;
+
+ debug->buf = (void *)fusion->ld_drv_map[(instance->map_id & 1)];
+ debug->len = fusion->drv_map_sz;
+ file->private_data = debug;
+
+ return 0;
+}
+
+static int
+megasas_debugfs_release(struct inode *inode, struct file *file)
+{
+ struct megasas_debug_buffer *debug = file->private_data;
+
+ if (!debug)
+ return 0;
+
+ file->private_data = NULL;
+ kfree(debug);
+ return 0;
+}
+
+static const struct file_operations megasas_debugfs_raidmap_fops = {
+ .owner = THIS_MODULE,
+ .open = megasas_debugfs_raidmap_open,
+ .read = megasas_debugfs_read,
+ .release = megasas_debugfs_release,
+};
+
+/*
+ * megasas_init_debugfs : Create debugfs root for megaraid_sas driver
+ */
+void megasas_init_debugfs(void)
+{
+ megasas_debugfs_root = debugfs_create_dir("megaraid_sas", NULL);
+ if (!megasas_debugfs_root)
+ pr_info("Cannot create debugfs root\n");
+}
+
+/*
+ * megasas_exit_debugfs : Remove debugfs root for megaraid_sas driver
+ */
+void megasas_exit_debugfs(void)
+{
+ debugfs_remove_recursive(megasas_debugfs_root);
+}
+
+/*
+ * megasas_setup_debugfs : Setup debugfs per Fusion adapter
+ * instance: Soft instance of adapter
+ */
+void
+megasas_setup_debugfs(struct megasas_instance *instance)
+{
+ char name[64];
+ struct fusion_context *fusion;
+
+ fusion = instance->ctrl_context;
+
+ if (fusion) {
+ snprintf(name, sizeof(name),
+ "scsi_host%d", instance->host->host_no);
+ if (!instance->debugfs_root) {
+ instance->debugfs_root =
+ debugfs_create_dir(name, megasas_debugfs_root);
+ if (!instance->debugfs_root) {
+ dev_err(&instance->pdev->dev,
+ "Cannot create per adapter debugfs directory\n");
+ return;
+ }
+ }
+
+ snprintf(name, sizeof(name), "raidmap_dump");
+ instance->raidmap_dump =
+ debugfs_create_file(name, S_IRUGO,
+ instance->debugfs_root, instance,
+ &megasas_debugfs_raidmap_fops);
+ if (!instance->raidmap_dump) {
+ dev_err(&instance->pdev->dev,
+ "Cannot create raidmap debugfs file\n");
+ debugfs_remove(instance->debugfs_root);
+ return;
+ }
+ }
+
+}
+
+/*
+ * megasas_destroy_debugfs : Destroy debugfs per Fusion adapter
+ * instance: Soft instance of adapter
+ */
+void megasas_destroy_debugfs(struct megasas_instance *instance)
+{
+ debugfs_remove_recursive(instance->debugfs_root);
+}
+
+#else
+void megasas_init_debugfs(void)
+{
+}
+void megasas_exit_debugfs(void)
+{
+}
+void megasas_setup_debugfs(struct megasas_instance *instance)
+{
+}
+void megasas_destroy_debugfs(struct megasas_instance *instance)
+{
+}
+#endif /*CONFIG_DEBUG_FS*/
projects / users / hch / configfs.git / commitdiff