[src/trunk]: src/sys/dev/pci/ixgbe Add hw.ixgN.debug sysctl. "sysctl -w hw.ix...

[msaitoh <msaitoh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2d8bb8c04541
branches:  trunk
changeset: 323071:2d8bb8c04541
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Wed May 30 09:17:17 2018 +0000

description:
Add hw.ixgN.debug sysctl. "sysctl -w hw.ixgN.debug=1" dumps some registers
to console.

diffstat:

 sys/dev/pci/ixgbe/ixgbe.c |  118 +++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 117 insertions(+), 1 deletions(-)

diffs (146 lines):

diff -r 85e63efa6a61 -r 2d8bb8c04541 sys/dev/pci/ixgbe/ixgbe.c
--- a/sys/dev/pci/ixgbe/ixgbe.c Wed May 30 08:35:26 2018 +0000
+++ b/sys/dev/pci/ixgbe/ixgbe.c Wed May 30 09:17:17 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ixgbe.c,v 1.157 2018/05/30 08:35:26 msaitoh Exp $ */
+/* $NetBSD: ixgbe.c,v 1.158 2018/05/30 09:17:17 msaitoh Exp $ */
 
 /******************************************************************************
 
@@ -242,6 +242,7 @@
 static int      ixgbe_sysctl_tdt_handler(SYSCTLFN_PROTO);
 static int      ixgbe_sysctl_tdh_handler(SYSCTLFN_PROTO);
 static int      ixgbe_sysctl_eee_state(SYSCTLFN_PROTO);
+static int     ixgbe_sysctl_debug(SYSCTLFN_PROTO);
 static int     ixgbe_sysctl_wol_enable(SYSCTLFN_PROTO);
 static int     ixgbe_sysctl_wufc(SYSCTLFN_PROTO);
 
@@ -3213,6 +3214,12 @@
        }
 
        if (sysctl_createv(log, 0, &rnode, &cnode,
+           CTLFLAG_READWRITE, CTLTYPE_INT,
+           "debug", SYSCTL_DESCR("Debug Info"),
+           ixgbe_sysctl_debug, 0, (void *)adapter, 0, CTL_CREATE, CTL_EOL) != 0)
+               aprint_error_dev(dev, "could not create sysctl\n");
+
+       if (sysctl_createv(log, 0, &rnode, &cnode,
            CTLFLAG_READONLY, CTLTYPE_INT,
            "num_rx_desc", SYSCTL_DESCR("Number of rx descriptors"),
            NULL, 0, &adapter->num_rx_desc, 0, CTL_CREATE, CTL_EOL) != 0)
@@ -5696,6 +5703,115 @@
        return (error);
 } /* ixgbe_sysctl_eee_state */
 
+#define PRINTQS(adapter, regname)                                      \
+       do {                                                            \
+               struct ixgbe_hw *_hw = &(adapter)->hw;                  \
+               int _i;                                                 \
+                                                                       \
+               printf("%s: %s", device_xname((adapter)->dev), #regname); \
+               for (_i = 0; _i < (adapter)->num_queues; _i++) {        \
+                       printf((_i == 0) ? "\t" : " ");                 \
+                       printf("%08x", IXGBE_READ_REG(_hw,              \
+                               IXGBE_##regname(_i)));                  \
+               }                                                       \
+               printf("\n");                                           \
+       } while (0)
+
+/************************************************************************
+ * ixgbe_print_debug_info
+ *
+ *   Called only when em_display_debug_stats is enabled.
+ *   Provides a way to take a look at important statistics
+ *   maintained by the driver and hardware.
+ ************************************************************************/
+static void
+ixgbe_print_debug_info(struct adapter *adapter)
+{
+        device_t        dev = adapter->dev;
+        struct ixgbe_hw *hw = &adapter->hw;
+       int table_size;
+       int i;
+
+       switch (adapter->hw.mac.type) {
+       case ixgbe_mac_X550:
+       case ixgbe_mac_X550EM_x:
+       case ixgbe_mac_X550EM_a:
+               table_size = 128;
+               break;
+       default:
+               table_size = 32;
+               break;
+       }
+       
+       device_printf(dev, "[E]RETA:\n");
+       for (i = 0; i < table_size; i++) {
+               if (i < 32)
+                       printf("%02x: %08x\n", i, IXGBE_READ_REG(hw,
+                               IXGBE_RETA(i)));
+               else
+                       printf("%02x: %08x\n", i, IXGBE_READ_REG(hw,
+                               IXGBE_ERETA(i - 32)));
+       }
+
+       device_printf(dev, "queue:");
+       for (i = 0; i < adapter->num_queues; i++) {
+               printf((i == 0) ? "\t" : " ");
+               printf("%8d", i);
+       }
+       printf("\n");
+       PRINTQS(adapter, RDBAL);
+       PRINTQS(adapter, RDBAH);
+       PRINTQS(adapter, RDLEN);
+       PRINTQS(adapter, SRRCTL);
+       PRINTQS(adapter, RDH);
+       PRINTQS(adapter, RDT);
+       PRINTQS(adapter, RXDCTL);
+
+       device_printf(dev, "RQSMR:");
+       for (i = 0; i < adapter->num_queues / 4; i++) {
+               printf((i == 0) ? "\t" : " ");
+               printf("%08x", IXGBE_READ_REG(hw, IXGBE_RQSMR(i)));
+       }
+       printf("\n");
+
+       device_printf(dev, "disabled_count:");
+       for (i = 0; i < adapter->num_queues; i++) {
+               printf((i == 0) ? "\t" : " ");
+               printf("%8d", adapter->queues[i].disabled_count);
+       }
+       printf("\n");
+       
+       device_printf(dev, "EIMS:\t%08x\n", IXGBE_READ_REG(hw, IXGBE_EIMS));
+       if (hw->mac.type != ixgbe_mac_82598EB) {
+               device_printf(dev, "EIMS_EX(0):\t%08x\n",
+                             IXGBE_READ_REG(hw, IXGBE_EIMS_EX(0)));
+               device_printf(dev, "EIMS_EX(1):\t%08x\n",
+                             IXGBE_READ_REG(hw, IXGBE_EIMS_EX(1)));
+       }
+} /* ixgbe_print_debug_info */
+
+/************************************************************************
+ * ixgbe_sysctl_debug
+ ************************************************************************/
+static int
+ixgbe_sysctl_debug(SYSCTLFN_ARGS)
+{
+       struct sysctlnode node = *rnode;
+       struct adapter *adapter = (struct adapter *)node.sysctl_data;
+       int            error, result = 0;
+
+       node.sysctl_data = &result;
+       error = sysctl_lookup(SYSCTLFN_CALL(&node));
+
+       if (error || newp == NULL)
+               return error;
+
+       if (result == 1)
+               ixgbe_print_debug_info(adapter);
+
+       return 0;
+} /* ixgbe_sysctl_debug */
+
 /************************************************************************
  * ixgbe_init_device_features
  ************************************************************************/