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Date: Tue, 13 Oct 2009 08:31:45 -0700
From: Dhananjay Phadke <dhananjay@...xen.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, ameen.rahman@...gic.com,
Narender Kumar <narender.kumar@...gic.com>
Subject: [PATCH NEXT 5/5] netxen: add sysfs entries for diag tools
Add sysfs entries to enable register and memory access
for diagnostic tools.
Signed-off-by: Narender Kumar <narender.kumar@...gic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@...xen.com>
---
drivers/net/netxen/netxen_nic.h | 1 +
drivers/net/netxen/netxen_nic_main.c | 187 ++++++++++++++++++++++++++++++++++
2 files changed, 188 insertions(+), 0 deletions(-)
diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index 1047609..1bdb8f4 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -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))
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 6ba1c72..5bc8520 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -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);
@@ -1308,6 +1310,8 @@ 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:
@@ -1360,6 +1364,8 @@ 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);
@@ -2332,6 +2338,160 @@ 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)
{
@@ -2357,6 +2517,33 @@ 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)
--
1.6.0.2
--
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