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nvethernet: dump all registers

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Dump all valid ethernet IP registers

Bug 200563382

Change-Id: I34ce3c1dc5c2c4e12040d2d349e2ad63ec8bca8b
Signed-off-by: rakesh goyal <rgoyal@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2338198
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Bhadram Varka <vbhadram@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
rakesh goyal
2020-04-26 14:50:12 +05:30
committed by Revanth Kumar Uppala
parent 192561087a
commit c6b2d05d26
2 changed files with 62 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/nvidia/nvethernet/ether_linux.h
View File

@@ -380,6 +380,8 @@ struct ether_priv_data {
struct dentry *dbgfs_hw_feat;
/** Descriptor dump debug fs pointer */
struct dentry *dbgfs_desc_dump;
/** Register dump debug fs pointer */
struct dentry *dbgfs_reg_dump;
#endif
};

60
drivers/net/ethernet/nvidia/nvethernet/sysfs.c
View File

@@ -16,6 +16,11 @@
#include "ether_linux.h"
#ifdef CONFIG_DEBUG_FS
/* As per IAS Docs */
#define EOQS_MAX_REGISTER_ADDRESS 0x12FC
#endif
/**
* @brief Shows the current setting of MAC loopback
*
@@ -590,6 +595,49 @@ static const struct file_operations ether_desc_dump_fops = {
.release = single_release,
};
static int ether_register_dump_read(struct seq_file *seq, void *v)
{
struct net_device *ndev = seq->private;
struct ether_priv_data *pdata = netdev_priv(ndev);
struct osi_core_priv_data *osi_core = pdata->osi_core;
int max_address = 0x0;
int start_addr = 0x0;
max_address = EOQS_MAX_REGISTER_ADDRESS;
/* Interface is not up so register dump not allowed */
if (!netif_running(ndev)) {
dev_err(pdata->dev, "Not Allowed. Ether interface is not up\n");
return -EBUSY;
}
while (1) {
seq_printf(seq,
"\t Register offset 0x%x value 0x%x\n",
start_addr,
ioread32((void *)osi_core->base + start_addr));
start_addr += 4;
if (start_addr > max_address)
break;
}
return 0;
}
static int ether_register_dump_open(struct inode *inode, struct file *file)
{
return single_open(file, ether_register_dump_read, inode->i_private);
}
static const struct file_operations ether_register_dump_fops = {
.owner = THIS_MODULE,
.open = ether_register_dump_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int ether_create_debugfs(struct ether_priv_data *pdata)
{
char *buf;
@@ -632,6 +680,18 @@ static int ether_create_debugfs(struct ether_priv_data *pdata)
goto exit;
}
pdata->dbgfs_reg_dump = debugfs_create_file("register_dump", S_IRUGO,
pdata->dbgfs_dir,
pdata->ndev,
&ether_register_dump_fops);
if (!pdata->dbgfs_reg_dump) {
netdev_err(pdata->ndev,
"failed to create rgister dump debugfs\n");
debugfs_remove_recursive(pdata->dbgfs_dir);
ret = -ENOMEM;
goto exit;
}
exit:
kfree(buf);
return ret;