cxgb4: Add a debugfs entry to dump CIM MA logic analyzer logs

[thirdparty/kernel/stable.git] / drivers / net / ethernet / chelsio / cxgb4 / cxgb4_debugfs.c

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 3719807efdddf176c10b460c7eeb9b0030b6c38d..7c9ad630c1cd35899853f487097eebdb6e5bd0bb 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -182,6 +182,52 @@ static const struct file_operations cim_la_fops = {
        .release = seq_release_private
 };
 
+static int cim_ma_la_show(struct seq_file *seq, void *v, int idx)
+{
+       const u32 *p = v;
+
+       if (v == SEQ_START_TOKEN) {
+               seq_puts(seq, "\n");
+       } else if (idx < CIM_MALA_SIZE) {
+               seq_printf(seq, "%02x%08x%08x%08x%08x\n",
+                          p[4], p[3], p[2], p[1], p[0]);
+       } else {
+               if (idx == CIM_MALA_SIZE)
+                       seq_puts(seq,
+                                "\nCnt ID Tag UE       Data       RDY VLD\n");
+               seq_printf(seq, "%3u %2u  %x   %u %08x%08x  %u   %u\n",
+                          (p[2] >> 10) & 0xff, (p[2] >> 7) & 7,
+                          (p[2] >> 3) & 0xf, (p[2] >> 2) & 1,
+                          (p[1] >> 2) | ((p[2] & 3) << 30),
+                          (p[0] >> 2) | ((p[1] & 3) << 30), (p[0] >> 1) & 1,
+                          p[0] & 1);
+       }
+       return 0;
+}
+
+static int cim_ma_la_open(struct inode *inode, struct file *file)
+{
+       struct seq_tab *p;
+       struct adapter *adap = inode->i_private;
+
+       p = seq_open_tab(file, 2 * CIM_MALA_SIZE, 5 * sizeof(u32), 1,
+                        cim_ma_la_show);
+       if (!p)
+               return -ENOMEM;
+
+       t4_cim_read_ma_la(adap, (u32 *)p->data,
+                         (u32 *)p->data + 5 * CIM_MALA_SIZE);
+       return 0;
+}
+
+static const struct file_operations cim_ma_la_fops = {
+       .owner   = THIS_MODULE,
+       .open    = cim_ma_la_open,
+       .read    = seq_read,
+       .llseek  = seq_lseek,
+       .release = seq_release_private
+};
+
 static int cim_qcfg_show(struct seq_file *seq, void *v)
 {
        static const char * const qname[] = {
@@ -2128,6 +2174,7 @@ int t4_setup_debugfs(struct adapter *adap)
 
        static struct t4_debugfs_entry t4_debugfs_files[] = {
                { "cim_la", &cim_la_fops, S_IRUSR, 0 },
+               { "cim_ma_la", &cim_ma_la_fops, S_IRUSR, 0 },
                { "cim_qcfg", &cim_qcfg_fops, S_IRUSR, 0 },
                { "clk", &clk_debugfs_fops, S_IRUSR, 0 },
                { "devlog", &devlog_fops, S_IRUSR, 0 },