iwlwifi: add sysctl to dump PCI IDs/ names / firmware-prefixes

Add a FreeBSD-specifc SYSCTL_PROC to dump the list of
PCI IDs / name / firmware-prefix which can be post-processed
for man pages (iwlwifi.4 and iwlwififw.4) or the wiki.

The output still yields duplicates depending on by what information
you need so one may wants to filter them out (try not to use sort/uniq).

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days

1 files changed, 62 insertions, 0 deletions

diff --git a/sys/contrib/dev/iwlwifi/pcie/drv.c b/sys/contrib/dev/iwlwifi/pcie/drv.c
index 536a40f1e5cc..6b9ce03850ec 100644
--- a/sys/contrib/dev/iwlwifi/pcie/drv.c
+++ b/sys/contrib/dev/iwlwifi/pcie/drv.c
@@ -1767,3 +1767,65 @@ void iwl_pci_unregister_driver(void)
 {
 	pci_unregister_driver(&iwl_pci_driver);
 }
+
+#if defined(__FreeBSD__)
+static int
+sysctl_iwlwifi_pci_ids_name(SYSCTL_HANDLER_ARGS)
+{
+	const struct pci_device_id *id;
+	struct sbuf *sb;
+	int error, i;
+
+	error = sysctl_wire_old_buffer(req, 0);
+	if (error != 0)
+		return (error);
+	sb = sbuf_new_for_sysctl(NULL, NULL, 512, req);
+	if (sb == NULL)
+		return (ENOMEM);
+
+	id = iwl_hw_card_ids;
+	while (id != NULL && id->vendor != 0) {
+
+		if ((id->driver_data & TRANS_CFG_MARKER) != 0) {
+			/* Skip and print them below. */
+
+		} else if (id->driver_data != 0) {
+			const struct iwl_cfg *cfg;
+
+			cfg = (void *)(id->driver_data & ~TRANS_CFG_MARKER);
+			sbuf_printf(sb, "%#06x/%#06x/%#06x/%#06x\t%s\t%s\n",
+			    id->vendor, id->device, id->subvendor, id->subdevice,
+			    cfg->name, cfg->fw_name_pre);
+		} else {
+			sbuf_printf(sb, "%#06x/%#06x/%#06x/%#06x\t%s\t%s\n",
+			    id->vendor, id->device, id->subvendor, id->subdevice,
+			    "","");
+		}
+		id++;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(iwl_dev_info_table); i++) {
+		const struct iwl_dev_info *dev_info = &iwl_dev_info_table[i];
+		const char *name;
+
+		if (dev_info->name)
+			name = dev_info->name;
+		else if (dev_info->cfg && dev_info->cfg->name)
+			name = dev_info->cfg->name;
+		else
+			name = "";
+
+		sbuf_printf(sb, "%#06x/%#06x/%#06x/%#06x\t%s\t%s\n",
+		    PCI_VENDOR_ID_INTEL, dev_info->device, PCI_ANY_ID, dev_info->subdevice,
+		    name, dev_info->cfg->fw_name_pre);
+	}
+
+	error = sbuf_finish(sb);
+	sbuf_delete(sb);
+
+	return (error);
+}
+SYSCTL_PROC(LINUXKPI_PARAM_PARENT, OID_AUTO, LINUXKPI_PARAM_NAME(pci_ids_name),
+    CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_SKIP | CTLFLAG_MPSAFE, NULL, 0,
+    sysctl_iwlwifi_pci_ids_name, "", "iwlwifi PCI IDs and names");
+#endif