Skip to content

Commit

Permalink
netxen: add sysfs entries for diag tools
Browse files Browse the repository at this point in the history 
Add sysfs entries to enable register and memory access
for diagnostic tools.

Signed-off-by: Narender Kumar <[email protected]>
Signed-off-by: Dhananjay Phadke <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
  • Loading branch information
@davem330
Dhananjay Phadke authored and davem330 committed Oct 13, 2009
1 parent f03b0eb commit 70f9cf8
Show file tree
Hide file tree
Showing 2 changed files with 188 additions and 0 deletions.
1 change: 1 addition & 0 deletions drivers/net/netxen/netxen_nic.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1089,6 +1089,7 @@ typedef struct {
#define NETXEN_NIC_MSIX_ENABLED 0x04
#define NETXEN_NIC_LRO_ENABLED 0x08
#define NETXEN_NIC_BRIDGE_ENABLED 0X10
#define NETXEN_NIC_DIAG_ENABLED 0x20
#define NETXEN_IS_MSI_FAMILY(adapter) \
((adapter)->flags & (NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED))

Expand Down
187 changes: 187 additions & 0 deletions drivers/net/netxen/netxen_nic_main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,8 @@ static void netxen_nic_poll_controller(struct net_device *netdev);

static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
static void netxen_create_diag_entries(struct netxen_adapter *adapter);
static void netxen_remove_diag_entries(struct netxen_adapter *adapter);

static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
static int netxen_can_start_firmware(struct netxen_adapter *adapter);
Expand Down Expand Up @@ -1307,6 +1309,8 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
break;
}

netxen_create_diag_entries(adapter);

return 0;

err_out_disable_msi:
Expand Down Expand Up @@ -1359,6 +1363,8 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)

netxen_teardown_intr(adapter);

netxen_remove_diag_entries(adapter);

netxen_cleanup_pci_map(adapter);

netxen_release_firmware(adapter);
Expand Down Expand Up @@ -2331,6 +2337,160 @@ static struct device_attribute dev_attr_bridged_mode = {
.store = netxen_store_bridged_mode,
};

static ssize_t
netxen_store_diag_mode(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
struct netxen_adapter *adapter = dev_get_drvdata(dev);
unsigned long new;

if (strict_strtoul(buf, 2, &new))
return -EINVAL;

if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;

return len;
}

static ssize_t
netxen_show_diag_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct netxen_adapter *adapter = dev_get_drvdata(dev);

return sprintf(buf, "%d\n",
!!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
}

static struct device_attribute dev_attr_diag_mode = {
.attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
.show = netxen_show_diag_mode,
.store = netxen_store_diag_mode,
};

static int
netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
loff_t offset, size_t size)
{
if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
return -EIO;

if ((size != 4) || (offset & 0x3))
return -EINVAL;

if (offset < NETXEN_PCI_CRBSPACE)
return -EINVAL;

return 0;
}

static ssize_t
netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
char *buf, loff_t offset, size_t size)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u32 data;
int ret;

ret = netxen_sysfs_validate_crb(adapter, offset, size);
if (ret != 0)
return ret;

data = NXRD32(adapter, offset);
memcpy(buf, &data, size);
return size;
}

static ssize_t
netxen_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
char *buf, loff_t offset, size_t size)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u32 data;
int ret;

ret = netxen_sysfs_validate_crb(adapter, offset, size);
if (ret != 0)
return ret;

memcpy(&data, buf, size);
NXWR32(adapter, offset, data);
return size;
}

static int
netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
loff_t offset, size_t size)
{
if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
return -EIO;

if ((size != 8) || (offset & 0x7))
return -EIO;

return 0;
}

static ssize_t
netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
char *buf, loff_t offset, size_t size)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u64 data;
int ret;

ret = netxen_sysfs_validate_mem(adapter, offset, size);
if (ret != 0)
return ret;

if (adapter->pci_mem_read(adapter, offset, &data))
return -EIO;

memcpy(buf, &data, size);

return size;
}

ssize_t netxen_sysfs_write_mem(struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t offset, size_t size)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct netxen_adapter *adapter = dev_get_drvdata(dev);
u64 data;
int ret;

ret = netxen_sysfs_validate_mem(adapter, offset, size);
if (ret != 0)
return ret;

memcpy(&data, buf, size);

if (adapter->pci_mem_write(adapter, offset, data))
return -EIO;

return size;
}


static struct bin_attribute bin_attr_crb = {
.attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
.size = 0,
.read = netxen_sysfs_read_crb,
.write = netxen_sysfs_write_crb,
};

static struct bin_attribute bin_attr_mem = {
.attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
.size = 0,
.read = netxen_sysfs_read_mem,
.write = netxen_sysfs_write_mem,
};

static void
netxen_create_sysfs_entries(struct netxen_adapter *adapter)
{
Expand All @@ -2356,6 +2516,33 @@ netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
device_remove_file(dev, &dev_attr_bridged_mode);
}

static void
netxen_create_diag_entries(struct netxen_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct device *dev;

dev = &pdev->dev;
if (device_create_file(dev, &dev_attr_diag_mode))
dev_info(dev, "failed to create diag_mode sysfs entry\n");
if (device_create_bin_file(dev, &bin_attr_crb))
dev_info(dev, "failed to create crb sysfs entry\n");
if (device_create_bin_file(dev, &bin_attr_mem))
dev_info(dev, "failed to create mem sysfs entry\n");
}


static void
netxen_remove_diag_entries(struct netxen_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct device *dev = &pdev->dev;

device_remove_file(dev, &dev_attr_diag_mode);
device_remove_bin_file(dev, &bin_attr_crb);
device_remove_bin_file(dev, &bin_attr_mem);
}

#ifdef CONFIG_INET

#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
Expand Down

0 comments on commit 70f9cf8

Please sign in to comment.