Merge branch 'bnxt_en-Add-OP-TEE-based-bnxt-f-w-manager'

Sheetal Tigadoli says:

====================
bnxt_en: Add OP-TEE based bnxt f/w manager

This patch series adds support for TEE based BNXT firmware
management module and the driver changes to invoke OP-TEE
APIs to fastboot firmware and to collect crash dump.

Changes from v4:
 - update Kconfig to reflect dependency on TEE driver
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 54 insertions, 4 deletions

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 8cdf71f8824d..c24caaaf05ca 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -10581,14 +10581,23 @@ static void bnxt_fw_reset_writel(struct bnxt *bp, int reg_idx)
 static void bnxt_reset_all(struct bnxt *bp)
 {
 	struct bnxt_fw_health *fw_health = bp->fw_health;
-	int i;
+	int i, rc;
+
+	if (bp->fw_cap & BNXT_FW_CAP_ERR_RECOVER_RELOAD) {
+#ifdef CONFIG_TEE_BNXT_FW
+		rc = tee_bnxt_fw_load();
+		if (rc)
+			netdev_err(bp->dev, "Unable to reset FW rc=%d\n", rc);
+		bp->fw_reset_timestamp = jiffies;
+#endif
+		return;
+	}
 
 	if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_HOST) {
 		for (i = 0; i < fw_health->fw_reset_seq_cnt; i++)
 			bnxt_fw_reset_writel(bp, i);
 	} else if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_CO_CPU) {
 		struct hwrm_fw_reset_input req = {0};
-		int rc;
 
 		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_RESET, -1, -1);
 		req.resp_addr = cpu_to_le64(bp->hwrm_cmd_kong_resp_dma_addr);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index d333589811a5..3e7d1fb1b0b1 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -25,6 +25,9 @@
 #include <net/dst_metadata.h>
 #include <net/xdp.h>
 #include <linux/dim.h>
+#ifdef CONFIG_TEE_BNXT_FW
+#include <linux/firmware/broadcom/tee_bnxt_fw.h>
+#endif
 
 struct page_pool;
 
@@ -1804,6 +1807,9 @@ struct bnxt {
 
 	u8			num_leds;
 	struct bnxt_led_info	leds[BNXT_MAX_LED];
+	u16			dump_flag;
+#define BNXT_DUMP_LIVE		0
+#define BNXT_DUMP_CRASH		1
 
 	struct bpf_prog		*xdp_prog;
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 51c140476717..f2220b826d61 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -3311,6 +3311,24 @@ err:
 	return rc;
 }
 
+static int bnxt_set_dump(struct net_device *dev, struct ethtool_dump *dump)
+{
+	struct bnxt *bp = netdev_priv(dev);
+
+	if (dump->flag > BNXT_DUMP_CRASH) {
+		netdev_info(dev, "Supports only Live(0) and Crash(1) dumps.\n");
+		return -EINVAL;
+	}
+
+	if (!IS_ENABLED(CONFIG_TEE_BNXT_FW) && dump->flag == BNXT_DUMP_CRASH) {
+		netdev_info(dev, "Cannot collect crash dump as TEE_BNXT_FW config option is not enabled.\n");
+		return -EOPNOTSUPP;
+	}
+
+	bp->dump_flag = dump->flag;
+	return 0;
+}
+
 static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump)
 {
 	struct bnxt *bp = netdev_priv(dev);
@@ -3323,7 +3341,12 @@ static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump)
 			bp->ver_resp.hwrm_fw_bld_8b << 8 |
 			bp->ver_resp.hwrm_fw_rsvd_8b;
 
-	return bnxt_get_coredump(bp, NULL, &dump->len);
+	dump->flag = bp->dump_flag;
+	if (bp->dump_flag == BNXT_DUMP_CRASH)
+		dump->len = BNXT_CRASH_DUMP_LEN;
+	else
+		bnxt_get_coredump(bp, NULL, &dump->len);
+	return 0;
 }
 
 static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
@@ -3336,7 +3359,16 @@ static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
 
 	memset(buf, 0, dump->len);
 
-	return bnxt_get_coredump(bp, buf, &dump->len);
+	dump->flag = bp->dump_flag;
+	if (dump->flag == BNXT_DUMP_CRASH) {
+#ifdef CONFIG_TEE_BNXT_FW
+		return tee_bnxt_copy_coredump(buf, 0, dump->len);
+#endif
+	} else {
+		return bnxt_get_coredump(bp, buf, &dump->len);
+	}
+
+	return 0;
 }
 
 void bnxt_ethtool_init(struct bnxt *bp)
@@ -3446,6 +3478,7 @@ const struct ethtool_ops bnxt_ethtool_ops = {
 	.set_phys_id		= bnxt_set_phys_id,
 	.self_test		= bnxt_self_test,
 	.reset			= bnxt_reset,
+	.set_dump		= bnxt_set_dump,
 	.get_dump_flag		= bnxt_get_dump_flag,
 	.get_dump_data		= bnxt_get_dump_data,
 };
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
index b5b65b3f8534..01de7e79d14f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
@@ -59,6 +59,8 @@ struct hwrm_dbg_cmn_output {
 	#define HWRM_DBG_CMN_FLAGS_MORE	1
 };
 
+#define BNXT_CRASH_DUMP_LEN	(8 << 20)
+
 #define BNXT_LED_DFLT_ENA				\
 	(PORT_LED_CFG_REQ_ENABLES_LED0_ID |		\
 	 PORT_LED_CFG_REQ_ENABLES_LED0_STATE |		\