Author: np
Date: Thu Apr 11 19:39:40 2013
New Revision: 249376
URL: http://svnweb.freebsd.org/changeset/base/249376

Log:
  - Explain clearly why a different firmware is being installed (if/when
    it is being installed).  Improve other error messages while here.
  
  - Select special FPGA specific configuration profile when appropriate.
  
  MFC after:    3 days

Modified:
  head/sys/dev/cxgbe/t4_main.c

Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c        Thu Apr 11 19:05:24 2013        
(r249375)
+++ head/sys/dev/cxgbe/t4_main.c        Thu Apr 11 19:39:40 2013        
(r249376)
@@ -255,6 +255,7 @@ TUNABLE_INT("hw.cxgbe.interrupt_types", 
 #define DEFAULT_CF     "default"
 #define FLASH_CF       "flash"
 #define UWIRE_CF       "uwire"
+#define FPGA_CF                "fpga"
 static char t4_cfg_file[32] = DEFAULT_CF;
 TUNABLE_STR("hw.cxgbe.config_file", t4_cfg_file, sizeof(t4_cfg_file));
 
@@ -1885,6 +1886,46 @@ fw_compatible(const struct fw_hdr *hdr1,
 }
 
 /*
+ * The firmware in the KLD is usable and can be installed.  But should it be?
+ * This routine explains itself in detail if it indicates the KLD firmware
+ * should be installed.
+ */
+static int
+should_install_kld_fw(struct adapter *sc, int card_fw_usable, int k, int c)
+{
+       const char *reason;
+
+       KASSERT(t4_fw_install != 0, ("%s: Can't install; shouldn't be asked "
+           "to evaluate if install is a good idea.", __func__));
+
+       if (!card_fw_usable) {
+               reason = "incompatible or unusable";
+               goto install;
+       }
+
+       if (k > c) {
+               reason = "older than the version bundled with this driver";
+               goto install;
+       }
+
+       if (t4_fw_install == 2 && k != c) {
+               reason = "different than the version bundled with this driver";
+               goto install;
+       }
+
+       return (0);
+
+install:
+       device_printf(sc->dev, "firmware on card (%u.%u.%u.%u) is %s, "
+           "installing firmware %u.%u.%u.%u on card.\n",
+           G_FW_HDR_FW_VER_MAJOR(c), G_FW_HDR_FW_VER_MINOR(c),
+           G_FW_HDR_FW_VER_MICRO(c), G_FW_HDR_FW_VER_BUILD(c), reason,
+           G_FW_HDR_FW_VER_MAJOR(k), G_FW_HDR_FW_VER_MINOR(k),
+           G_FW_HDR_FW_VER_MICRO(k), G_FW_HDR_FW_VER_BUILD(k));
+
+       return (1);
+}
+/*
  * Establish contact with the firmware and determine if we are the master 
driver
  * or not, and whether we are responsible for chip initialization.
  */
@@ -1972,15 +2013,8 @@ prep_firmware(struct adapter *sc)
                 * on the card.
                 */
        } else if (kld_fw_usable && state == DEV_STATE_UNINIT &&
-           (!card_fw_usable ||
-           be32toh(kld_fw->fw_ver) > be32toh(card_fw->fw_ver) ||
-           (t4_fw_install == 2 && kld_fw->fw_ver != card_fw->fw_ver))) {
-               uint32_t v = ntohl(kld_fw->fw_ver);
-
-               device_printf(sc->dev,
-                   "installing firmware %d.%d.%d.%d on card.\n",
-                   G_FW_HDR_FW_VER_MAJOR(v), G_FW_HDR_FW_VER_MINOR(v),
-                   G_FW_HDR_FW_VER_MICRO(v), G_FW_HDR_FW_VER_BUILD(v));
+           should_install_kld_fw(sc, card_fw_usable, be32toh(kld_fw->fw_ver),
+           be32toh(card_fw->fw_ver))) {
 
                rc = -t4_load_fw(sc, fw->data, fw->datasize);
                if (rc != 0) {
@@ -2101,6 +2135,8 @@ partition_resources(struct adapter *sc, 
                /* Card specific overrides go here. */
                if (pci_get_device(sc->dev) == 0x440a)
                        snprintf(sc->cfg_file, sizeof(sc->cfg_file), UWIRE_CF);
+               if (is_fpga(sc))
+                       snprintf(sc->cfg_file, sizeof(sc->cfg_file), FPGA_CF);
        }
 
        /*
@@ -2114,17 +2150,20 @@ partition_resources(struct adapter *sc, 
                snprintf(s, sizeof(s), "%s_%s", name_prefix, sc->cfg_file);
                cfg = firmware_get(s);
                if (cfg == NULL) {
-                       device_printf(sc->dev, "unable to load module \"%s\" "
-                           "for configuration profile \"%s\", ",
-                           s, sc->cfg_file);
                        if (default_cfg != NULL) {
-                               device_printf(sc->dev, "will use the default "
-                                   "config file instead.\n");
+                               device_printf(sc->dev,
+                                   "unable to load module \"%s\" for "
+                                   "configuration profile \"%s\", will use "
+                                   "the default config file instead.\n",
+                                   s, sc->cfg_file);
                                snprintf(sc->cfg_file, sizeof(sc->cfg_file),
                                    "%s", DEFAULT_CF);
                        } else {
-                               device_printf(sc->dev, "will use the config "
-                                   "file on the card's flash instead.\n");
+                               device_printf(sc->dev,
+                                   "unable to load module \"%s\" for "
+                                   "configuration profile \"%s\", will use "
+                                   "the config file on the card's flash "
+                                   "instead.\n", s, sc->cfg_file);
                                snprintf(sc->cfg_file, sizeof(sc->cfg_file),
                                    "%s", FLASH_CF);
                        }
@@ -2217,8 +2256,8 @@ use_config_on_flash:
        rc = -t4_wr_mbox(sc, sc->mbox, &caps, sizeof(caps), &caps);
        if (rc != 0) {
                device_printf(sc->dev,
-                   "failed to pre-process config file: %d (mtype %d).\n", rc,
-                   mtype);
+                   "failed to pre-process config file: %d "
+                   "(mtype %d, moff 0x%x).\n", rc, mtype, moff);
                goto done;
        }
 
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