[PATCH 2/4] staging: unisys: added virthba debugfs dir and info entry
This patch adds virthba debugfs directory and info entry
Signed-off-by: Erik Arfvidson erik.arfvid...@unisys.com
---
drivers/staging/unisys/virthba/virthba.c | 79
1 file changed, 79 insertions(+)
diff --git a/drivers/staging/unisys/virthba/virthba.c
b/drivers/staging/unisys/virthba/virthba.c
index b9cbcf2..121cc05 100644
--- a/drivers/staging/unisys/virthba/virthba.c
+++ b/drivers/staging/unisys/virthba/virthba.c
@@ -50,6 +50,7 @@
#include scsi/scsi_cmnd.h
#include scsi/scsi_device.h
#include asm/param.h
+#include linux/debugfs.h
#include linux/types.h
#include virthba.h
@@ -66,6 +67,11 @@
/* NOTE: L1_CACHE_BYTES =128 */
#define DEVICE_ATTRIBUTE struct device_attribute
+ /* MAX_BUF = 6 lines x 10 MAXVHBA x 80 characters
+ * = 4800 bytes ~ 2^13 = 8192 bytes
+ */
+#define MAX_BUF 8192
+
/*/
/* Forward declarations */
/*/
@@ -104,6 +110,8 @@ static int virthba_serverup(struct virtpci_dev *virtpcidev);
static int virthba_serverdown(struct virtpci_dev *virtpcidev, u32 state);
static void doDiskAddRemove(struct work_struct *work);
static void virthba_serverdown_complete(struct work_struct *work);
+static ssize_t info_debugfs_read(struct file *file, char __user *buf,
+ size_t len, loff_t *offset);
/*/
/* Globals */
@@ -221,9 +229,18 @@ struct virthba_devices_open {
struct virthba_info *virthbainfo;
};
+static const struct file_operations debugfs_info_fops = {
+ .read = info_debugfs_read,
+};
+
+/*/
+/* Structs */
+/*/
+
#define VIRTHBASOPENMAX 1
/* array of open devices maintained by open() and close(); */
static struct virthba_devices_open VirtHbasOpen[VIRTHBASOPENMAX];
+static struct dentry *virthba_debugfs_dir;
/*/
/* Local Functions */
@@ -1342,6 +1359,62 @@ process_incoming_rsps(void *v)
complete_and_exit(dc-threadinfo.has_stopped, 0);
}
+/*/
+/* Debugfs filesystem functions */
+/*/
+
+static ssize_t info_debugfs_read(struct file *file,
+ char __user *buf, size_t len, loff_t *offset)
+{
+ ssize_t bytes_read = 0;
+ int str_pos = 0;
+ U64 phys_flags_addr;
+ int i;
+ struct virthba_info *virthbainfo;
+ char *vbuf;
+
+ if (len MAX_BUF)
+ len = MAX_BUF;
+ vbuf = kzalloc(len, GFP_KERNEL);
+ if (!vbuf)
+ return -ENOMEM;
+
+ for (i = 0; i VIRTHBASOPENMAX; i++) {
+ if (VirtHbasOpen[i].virthbainfo == NULL)
+ continue;
+
+ virthbainfo = VirtHbasOpen[i].virthbainfo;
+
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, MaxBuffLen:%u\n, MaxBuffLen);
+
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \nvirthba result queue poll wait:%d usecs.\n,
+ rsltq_wait_usecs);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \ninterrupts_rcvd = %llu, interrupts_disabled
= %llu\n,
+ virthbainfo-interrupts_rcvd,
+ virthbainfo-interrupts_disabled);
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, \ninterrupts_notme = %llu,\n,
+ virthbainfo-interrupts_notme);
+ phys_flags_addr = virt_to_phys((__force void *)
+ virthbainfo-flags_addr);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ flags_addr = %p, phys_flags_addr=0x%016llx,
FeatureFlags=%llu\n,
+ virthbainfo-flags_addr, phys_flags_addr,
+ (__le64)readq(virthbainfo-flags_addr));
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, acquire_failed_cnt:%llu\n,
+ virthbainfo-acquire_failed_cnt);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos, \n);
+ }
+
+ bytes_read = simple_read_from_buffer(buf, len, offset, vbuf, str_pos);
+ kfree(vbuf);
+ return bytes_read;
+}
+
/* As per VirtpciFunc returns 1 for success and 0 for failure */
static int
virthba_serverup(struct virtpci_dev *virtpcidev)
@@ -1526,6 +1599,10 @@ virthba_mod_init(void)
[PATCH 2/4] staging: unisys: added virthba debugfs dir and info entry
This patch adds virthba debugfs directory and info entry
Signed-off-by: Erik Arfvidson erik.arfvid...@unisys.com
Signed-off-by: Benjamin Romer benjamin.ro...@unisys.com
---
drivers/staging/unisys/virthba/virthba.c | 79
1 file changed, 79 insertions(+)
diff --git a/drivers/staging/unisys/virthba/virthba.c
b/drivers/staging/unisys/virthba/virthba.c
index b9cbcf2..121cc05 100644
--- a/drivers/staging/unisys/virthba/virthba.c
+++ b/drivers/staging/unisys/virthba/virthba.c
@@ -50,6 +50,7 @@
#include scsi/scsi_cmnd.h
#include scsi/scsi_device.h
#include asm/param.h
+#include linux/debugfs.h
#include linux/types.h
#include virthba.h
@@ -66,6 +67,11 @@
/* NOTE: L1_CACHE_BYTES =128 */
#define DEVICE_ATTRIBUTE struct device_attribute
+ /* MAX_BUF = 6 lines x 10 MAXVHBA x 80 characters
+ * = 4800 bytes ~ 2^13 = 8192 bytes
+ */
+#define MAX_BUF 8192
+
/*/
/* Forward declarations */
/*/
@@ -104,6 +110,8 @@ static int virthba_serverup(struct virtpci_dev *virtpcidev);
static int virthba_serverdown(struct virtpci_dev *virtpcidev, u32 state);
static void doDiskAddRemove(struct work_struct *work);
static void virthba_serverdown_complete(struct work_struct *work);
+static ssize_t info_debugfs_read(struct file *file, char __user *buf,
+ size_t len, loff_t *offset);
/*/
/* Globals */
@@ -221,9 +229,18 @@ struct virthba_devices_open {
struct virthba_info *virthbainfo;
};
+static const struct file_operations debugfs_info_fops = {
+ .read = info_debugfs_read,
+};
+
+/*/
+/* Structs */
+/*/
+
#define VIRTHBASOPENMAX 1
/* array of open devices maintained by open() and close(); */
static struct virthba_devices_open VirtHbasOpen[VIRTHBASOPENMAX];
+static struct dentry *virthba_debugfs_dir;
/*/
/* Local Functions */
@@ -1342,6 +1359,62 @@ process_incoming_rsps(void *v)
complete_and_exit(dc-threadinfo.has_stopped, 0);
}
+/*/
+/* Debugfs filesystem functions */
+/*/
+
+static ssize_t info_debugfs_read(struct file *file,
+ char __user *buf, size_t len, loff_t *offset)
+{
+ ssize_t bytes_read = 0;
+ int str_pos = 0;
+ U64 phys_flags_addr;
+ int i;
+ struct virthba_info *virthbainfo;
+ char *vbuf;
+
+ if (len MAX_BUF)
+ len = MAX_BUF;
+ vbuf = kzalloc(len, GFP_KERNEL);
+ if (!vbuf)
+ return -ENOMEM;
+
+ for (i = 0; i VIRTHBASOPENMAX; i++) {
+ if (VirtHbasOpen[i].virthbainfo == NULL)
+ continue;
+
+ virthbainfo = VirtHbasOpen[i].virthbainfo;
+
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, MaxBuffLen:%u\n, MaxBuffLen);
+
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \nvirthba result queue poll wait:%d usecs.\n,
+ rsltq_wait_usecs);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \ninterrupts_rcvd = %llu, interrupts_disabled
= %llu\n,
+ virthbainfo-interrupts_rcvd,
+ virthbainfo-interrupts_disabled);
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, \ninterrupts_notme = %llu,\n,
+ virthbainfo-interrupts_notme);
+ phys_flags_addr = virt_to_phys((__force void *)
+ virthbainfo-flags_addr);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ flags_addr = %p, phys_flags_addr=0x%016llx,
FeatureFlags=%llu\n,
+ virthbainfo-flags_addr, phys_flags_addr,
+ (__le64)readq(virthbainfo-flags_addr));
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, acquire_failed_cnt:%llu\n,
+ virthbainfo-acquire_failed_cnt);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos, \n);
+ }
+
+ bytes_read = simple_read_from_buffer(buf, len, offset, vbuf, str_pos);
+ kfree(vbuf);
+ return bytes_read;
+}
+
/* As per VirtpciFunc returns 1 for success and 0 for failure */
static int
virthba_serverup(struct virtpci_dev *virtpcidev)
@@
[PATCH 2/4] staging: unisys: added virthba debugfs dir and info entry
This patch adds virthba debugfs directory and info entry
Signed-off-by: Erik Arfvidson erik.arfvid...@unisys.com
Signed-off-by: Benjamin Romer benjamin.ro...@unisys.com
---
drivers/staging/unisys/virthba/virthba.c | 79
1 file changed, 79 insertions(+)
diff --git a/drivers/staging/unisys/virthba/virthba.c
b/drivers/staging/unisys/virthba/virthba.c
index b9cbcf2..121cc05 100644
--- a/drivers/staging/unisys/virthba/virthba.c
+++ b/drivers/staging/unisys/virthba/virthba.c
@@ -50,6 +50,7 @@
#include scsi/scsi_cmnd.h
#include scsi/scsi_device.h
#include asm/param.h
+#include linux/debugfs.h
#include linux/types.h
#include virthba.h
@@ -66,6 +67,11 @@
/* NOTE: L1_CACHE_BYTES =128 */
#define DEVICE_ATTRIBUTE struct device_attribute
+ /* MAX_BUF = 6 lines x 10 MAXVHBA x 80 characters
+ * = 4800 bytes ~ 2^13 = 8192 bytes
+ */
+#define MAX_BUF 8192
+
/*/
/* Forward declarations */
/*/
@@ -104,6 +110,8 @@ static int virthba_serverup(struct virtpci_dev *virtpcidev);
static int virthba_serverdown(struct virtpci_dev *virtpcidev, u32 state);
static void doDiskAddRemove(struct work_struct *work);
static void virthba_serverdown_complete(struct work_struct *work);
+static ssize_t info_debugfs_read(struct file *file, char __user *buf,
+ size_t len, loff_t *offset);
/*/
/* Globals */
@@ -221,9 +229,18 @@ struct virthba_devices_open {
struct virthba_info *virthbainfo;
};
+static const struct file_operations debugfs_info_fops = {
+ .read = info_debugfs_read,
+};
+
+/*/
+/* Structs */
+/*/
+
#define VIRTHBASOPENMAX 1
/* array of open devices maintained by open() and close(); */
static struct virthba_devices_open VirtHbasOpen[VIRTHBASOPENMAX];
+static struct dentry *virthba_debugfs_dir;
/*/
/* Local Functions */
@@ -1342,6 +1359,62 @@ process_incoming_rsps(void *v)
complete_and_exit(dc-threadinfo.has_stopped, 0);
}
+/*/
+/* Debugfs filesystem functions */
+/*/
+
+static ssize_t info_debugfs_read(struct file *file,
+ char __user *buf, size_t len, loff_t *offset)
+{
+ ssize_t bytes_read = 0;
+ int str_pos = 0;
+ U64 phys_flags_addr;
+ int i;
+ struct virthba_info *virthbainfo;
+ char *vbuf;
+
+ if (len MAX_BUF)
+ len = MAX_BUF;
+ vbuf = kzalloc(len, GFP_KERNEL);
+ if (!vbuf)
+ return -ENOMEM;
+
+ for (i = 0; i VIRTHBASOPENMAX; i++) {
+ if (VirtHbasOpen[i].virthbainfo == NULL)
+ continue;
+
+ virthbainfo = VirtHbasOpen[i].virthbainfo;
+
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, MaxBuffLen:%u\n, MaxBuffLen);
+
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \nvirthba result queue poll wait:%d usecs.\n,
+ rsltq_wait_usecs);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \ninterrupts_rcvd = %llu, interrupts_disabled
= %llu\n,
+ virthbainfo-interrupts_rcvd,
+ virthbainfo-interrupts_disabled);
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, \ninterrupts_notme = %llu,\n,
+ virthbainfo-interrupts_notme);
+ phys_flags_addr = virt_to_phys((__force void *)
+ virthbainfo-flags_addr);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ flags_addr = %p, phys_flags_addr=0x%016llx,
FeatureFlags=%llu\n,
+ virthbainfo-flags_addr, phys_flags_addr,
+ (__le64)readq(virthbainfo-flags_addr));
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, acquire_failed_cnt:%llu\n,
+ virthbainfo-acquire_failed_cnt);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos, \n);
+ }
+
+ bytes_read = simple_read_from_buffer(buf, len, offset, vbuf, str_pos);
+ kfree(vbuf);
+ return bytes_read;
+}
+
/* As per VirtpciFunc returns 1 for success and 0 for failure */
static int
virthba_serverup(struct virtpci_dev *virtpcidev)
@@
Re: [PATCH 2/4] staging: unisys: added virthba debugfs dir and info entry
On Mon, Jul 21, 2014 at 02:47:43PM -0400, Erik Arfvidson wrote:
This patch adds virthba debugfs directory and info entry
Signed-off-by: Erik Arfvidson erik.arfvid...@unisys.com
Signed-off-by: Benjamin Romer benjamin.ro...@unisys.com
---
drivers/staging/unisys/virthba/virthba.c | 79
1 file changed, 79 insertions(+)
diff --git a/drivers/staging/unisys/virthba/virthba.c
b/drivers/staging/unisys/virthba/virthba.c
index b9cbcf2..121cc05 100644
--- a/drivers/staging/unisys/virthba/virthba.c
+++ b/drivers/staging/unisys/virthba/virthba.c
@@ -50,6 +50,7 @@
#include scsi/scsi_cmnd.h
#include scsi/scsi_device.h
#include asm/param.h
+#include linux/debugfs.h
#include linux/types.h
#include virthba.h
@@ -66,6 +67,11 @@
/* NOTE: L1_CACHE_BYTES =128 */
#define DEVICE_ATTRIBUTE struct device_attribute
+ /* MAX_BUF = 6 lines x 10 MAXVHBA x 80 characters
+ * = 4800 bytes ~ 2^13 = 8192 bytes
+ */
+#define MAX_BUF 8192
+
/*/
/* Forward declarations */
/*/
@@ -104,6 +110,8 @@ static int virthba_serverup(struct virtpci_dev
*virtpcidev);
static int virthba_serverdown(struct virtpci_dev *virtpcidev, u32 state);
static void doDiskAddRemove(struct work_struct *work);
static void virthba_serverdown_complete(struct work_struct *work);
+static ssize_t info_debugfs_read(struct file *file, char __user *buf,
+ size_t len, loff_t *offset);
/*/
/* Globals */
@@ -221,9 +229,18 @@ struct virthba_devices_open {
struct virthba_info *virthbainfo;
};
+static const struct file_operations debugfs_info_fops = {
+ .read = info_debugfs_read,
+};
+
+/*/
+/* Structs */
+/*/
+
#define VIRTHBASOPENMAX 1
/* array of open devices maintained by open() and close(); */
static struct virthba_devices_open VirtHbasOpen[VIRTHBASOPENMAX];
+static struct dentry *virthba_debugfs_dir;
/*/
/* Local Functions*/
@@ -1342,6 +1359,62 @@ process_incoming_rsps(void *v)
complete_and_exit(dc-threadinfo.has_stopped, 0);
}
+/*/
+/* Debugfs filesystem functions */
+/*/
+
+static ssize_t info_debugfs_read(struct file *file,
+ char __user *buf, size_t len, loff_t *offset)
+{
+ ssize_t bytes_read = 0;
+ int str_pos = 0;
+ U64 phys_flags_addr;
+ int i;
+ struct virthba_info *virthbainfo;
+ char *vbuf;
+
+ if (len MAX_BUF)
+ len = MAX_BUF;
+ vbuf = kzalloc(len, GFP_KERNEL);
+ if (!vbuf)
+ return -ENOMEM;
+
+ for (i = 0; i VIRTHBASOPENMAX; i++) {
+ if (VirtHbasOpen[i].virthbainfo == NULL)
+ continue;
+
+ virthbainfo = VirtHbasOpen[i].virthbainfo;
+
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, MaxBuffLen:%u\n, MaxBuffLen);
+
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \nvirthba result queue poll wait:%d usecs.\n,
+ rsltq_wait_usecs);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ \ninterrupts_rcvd = %llu, interrupts_disabled
= %llu\n,
+ virthbainfo-interrupts_rcvd,
+ virthbainfo-interrupts_disabled);
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, \ninterrupts_notme = %llu,\n,
+ virthbainfo-interrupts_notme);
+ phys_flags_addr = virt_to_phys((__force void *)
+virthbainfo-flags_addr);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos,
+ flags_addr = %p, phys_flags_addr=0x%016llx,
FeatureFlags=%llu\n,
+ virthbainfo-flags_addr, phys_flags_addr,
+ (__le64)readq(virthbainfo-flags_addr));
+ str_pos += scnprintf(vbuf + str_pos,
+ len - str_pos, acquire_failed_cnt:%llu\n,
+ virthbainfo-acquire_failed_cnt);
+ str_pos += scnprintf(vbuf + str_pos, len - str_pos, \n);
+ }
+
+ bytes_read = simple_read_from_buffer(buf, len, offset, vbuf, str_pos);
+ kfree(vbuf);
+ return bytes_read;
+}
+
/* As per VirtpciFunc returns 1
