net/ionic: support FW version

Add support for reading the firmware version.

Signed-off-by: Alfredo Cardigliano <cardigliano@ntop.org>
Reviewed-by: Shannon Nelson <snelson@pensando.io>

doc/guides/nics/features/ionic.ini

@@ -29,6 +29,7 @@ Packet type parsing  = Y
 Basic stats          = Y
 Extended stats       = Y
 Stats per queue      = Y
+FW version           = Y
 Linux UIO            = Y
 Linux VFIO           = Y
 x86-64               = Y

drivers/net/ionic/ionic.h

@@ -61,6 +61,7 @@ struct ionic_adapter {
 	bool intrs[IONIC_INTR_CTRL_REGS_MAX];
 	bool is_mgmt_nic;
 	bool link_up;
+	char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN];
 	struct rte_pci_device *pci_dev;
 	LIST_ENTRY(ionic_adapter) pci_adapters;
 };

drivers/net/ionic/ionic_dev.c

@@ -16,6 +16,7 @@ ionic_dev_setup(struct ionic_adapter *adapter)
 	struct ionic_dev *idev = &adapter->idev;
 	uint32_t sig;
 	u_char *bar0_base;
+	unsigned int i;
 
 	/* BAR0: dev_cmd and interrupts */
 	if (num_bars < 1) {
@@ -47,6 +48,13 @@ ionic_dev_setup(struct ionic_adapter *adapter)
 		return -EFAULT;
 	}
 
+	for (i = 0; i < IONIC_DEVINFO_FWVERS_BUFLEN; i++)
+		adapter->fw_version[i] =
+			ioread8(&idev->dev_info->fw_version[i]);
+	adapter->fw_version[IONIC_DEVINFO_FWVERS_BUFLEN - 1] = '\0';
+
+	IONIC_PRINT(DEBUG, "Firmware version: %s", adapter->fw_version);
+
 	/* BAR1: doorbells */
 	bar++;
 	if (num_bars < 2) {

drivers/net/ionic/ionic_ethdev.c

@@ -56,6 +56,8 @@ static int  ionic_dev_xstats_get_names(struct rte_eth_dev *dev,
 static int  ionic_dev_xstats_get_names_by_id(struct rte_eth_dev *dev,
 	struct rte_eth_xstat_name *xstats_names, const uint64_t *ids,
 	unsigned int limit);
+static int  ionic_dev_fw_version_get(struct rte_eth_dev *eth_dev,
+	char *fw_version, size_t fw_size);
 
 int ionic_logtype;
 
@@ -122,6 +124,7 @@ static const struct eth_dev_ops ionic_eth_dev_ops = {
 	.xstats_reset           = ionic_dev_xstats_reset,
 	.xstats_get_names       = ionic_dev_xstats_get_names,
 	.xstats_get_names_by_id = ionic_dev_xstats_get_names_by_id,
+	.fw_version_get         = ionic_dev_fw_version_get,
 };
 
 struct rte_ionic_xstats_name_off {
@@ -211,6 +214,23 @@ static const struct rte_ionic_xstats_name_off rte_ionic_xstats_strings[] = {
 #define IONIC_NB_HW_STATS (sizeof(rte_ionic_xstats_strings) / \
 		sizeof(rte_ionic_xstats_strings[0]))
 
+static int
+ionic_dev_fw_version_get(struct rte_eth_dev *eth_dev,
+		char *fw_version, size_t fw_size)
+{
+	struct ionic_lif *lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
+	struct ionic_adapter *adapter = lif->adapter;
+
+	if (fw_version == NULL || fw_size <= 0)
+		return -EINVAL;
+
+	snprintf(fw_version, fw_size, "%s",
+		 adapter->fw_version);
+	fw_version[fw_size - 1] = '\0';
+
+	return 0;
+}
+
 /*
  * Set device link up, enable tx.
  */