From 9a696f56fcabc3d7ddd120712cc3a70b085ea412 Mon Sep 17 00:00:00 2001
From: Prabhakar Kushwaha <prabhakar@freescale.com>
Date: Thu, 24 Dec 2015 15:32:37 +0530
Subject: [PATCH] driver: net: fsl-mc: Add version check for MC objects

Check and compare version of management  complex's object with
the version supported by Freescale ldpaa2 ethernet driver.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <york.sun@nxp.com>
---
 drivers/net/fsl-mc/mc.c           | 51 ++++++++++++++++++++++++++++++-
 drivers/net/ldpaa_eth/ldpaa_eth.c | 28 +++++++++++++++++
 2 files changed, 78 insertions(+), 1 deletion(-)

diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c
index bac4610fd9..b773e35ca6 100644
--- a/drivers/net/fsl-mc/mc.c
+++ b/drivers/net/fsl-mc/mc.c
@@ -655,6 +655,26 @@ int fsl_mc_ldpaa_init(bd_t *bis)
 	return 0;
 }
 
+static int dprc_version_check(struct fsl_mc_io *mc_io, uint16_t handle)
+{
+	struct dprc_attributes attr;
+	int error;
+
+	memset(&attr, 0, sizeof(struct dprc_attributes));
+	error = dprc_get_attributes(mc_io, MC_CMD_NO_FLAGS, handle, &attr);
+	if (error == 0) {
+		if ((attr.version.major != DPRC_VER_MAJOR) ||
+		    (attr.version.minor != DPRC_VER_MINOR)) {
+			printf("DPRC version mismatch found %u.%u,",
+			       attr.version.major,
+			       attr.version.minor);
+			printf("supported version is %u.%u\n",
+			       DPRC_VER_MAJOR, DPRC_VER_MINOR);
+		}
+	}
+	return error;
+}
+
 static int dpio_init(void)
 {
 	struct qbman_swp_desc p_des;
@@ -688,11 +708,18 @@ static int dpio_init(void)
 		goto err_get_attr;
 	}
 
+	if ((attr.version.major != DPIO_VER_MAJOR) ||
+	    (attr.version.minor != DPIO_VER_MINOR)) {
+		printf("DPIO version mismatch found %u.%u,",
+		       attr.version.major, attr.version.minor);
+		printf("supported version is %u.%u\n",
+		       DPIO_VER_MAJOR, DPIO_VER_MINOR);
+	}
+
 	dflt_dpio->dpio_id = attr.id;
 #ifdef DEBUG
 	printf("Init: DPIO id=0x%d\n", dflt_dpio->dpio_id);
 #endif
-
 	err = dpio_enable(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpio->dpio_handle);
 	if (err < 0) {
 		printf("dpio_enable() failed %d\n", err);
@@ -784,6 +811,12 @@ static int dprc_init(void)
 		goto err_root_open;
 	}
 
+	err = dprc_version_check(root_mc_io, root_dprc_handle);
+	if (err < 0) {
+		printf("dprc_version_check() failed: %d\n", err);
+		goto err_root_open;
+	}
+
 	cfg.options = DPRC_CFG_OPT_TOPOLOGY_CHANGES_ALLOWED |
 		      DPRC_CFG_OPT_OBJ_CREATE_ALLOWED |
 		      DPRC_CFG_OPT_ALLOC_ALLOWED;
@@ -906,6 +939,14 @@ static int dpbp_init(void)
 		goto err_get_attr;
 	}
 
+	if ((dpbp_attr.version.major != DPBP_VER_MAJOR) ||
+	    (dpbp_attr.version.minor != DPBP_VER_MINOR)) {
+		printf("DPBP version mismatch found %u.%u,",
+		       dpbp_attr.version.major, dpbp_attr.version.minor);
+		printf("supported version is %u.%u\n",
+		       DPBP_VER_MAJOR, DPBP_VER_MINOR);
+	}
+
 	dflt_dpbp->dpbp_attr.id = dpbp_attr.id;
 #ifdef DEBUG
 	printf("Init: DPBP id=0x%d\n", dflt_dpbp->dpbp_attr.id);
@@ -994,6 +1035,14 @@ static int dpni_init(void)
 		goto err_get_attr;
 	}
 
+	if ((dpni_attr.version.major != DPNI_VER_MAJOR) ||
+	    (dpni_attr.version.minor != DPNI_VER_MINOR)) {
+		printf("DPNI version mismatch found %u.%u,",
+		       dpni_attr.version.major, dpni_attr.version.minor);
+		printf("supported version is %u.%u\n",
+		       DPNI_VER_MAJOR, DPNI_VER_MINOR);
+	}
+
 	dflt_dpni->dpni_id = dpni_attr.id;
 #ifdef DEBUG
 	printf("Init: DPNI id=0x%d\n", dflt_dpni->dpni_id);
diff --git a/drivers/net/ldpaa_eth/ldpaa_eth.c b/drivers/net/ldpaa_eth/ldpaa_eth.c
index 3857122bd0..dd9af4e1fe 100644
--- a/drivers/net/ldpaa_eth/ldpaa_eth.c
+++ b/drivers/net/ldpaa_eth/ldpaa_eth.c
@@ -599,6 +599,29 @@ static void ldpaa_dpbp_free(void)
 	dpbp_close(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_handle);
 }
 
+static int ldpaa_dpmac_version_check(struct fsl_mc_io *mc_io,
+				     struct ldpaa_eth_priv *priv)
+{
+	struct dpmac_attr attr;
+	int error;
+
+	memset(&attr, 0, sizeof(struct dpmac_attr));
+	error = dpmac_get_attributes(mc_io, MC_CMD_NO_FLAGS,
+				     priv->dpmac_handle,
+				     &attr);
+	if (error == 0) {
+		if ((attr.version.major != DPMAC_VER_MAJOR) ||
+		    (attr.version.minor != DPMAC_VER_MINOR)) {
+			printf("DPMAC version mismatch found %u.%u,",
+			       attr.version.major, attr.version.minor);
+			printf("supported version is %u.%u\n",
+			       DPMAC_VER_MAJOR, DPMAC_VER_MINOR);
+		}
+	}
+
+	return error;
+}
+
 static int ldpaa_dpmac_setup(struct ldpaa_eth_priv *priv)
 {
 	int err = 0;
@@ -609,6 +632,11 @@ static int ldpaa_dpmac_setup(struct ldpaa_eth_priv *priv)
 			  &priv->dpmac_handle);
 	if (err)
 		printf("dpmac_create() failed\n");
+
+	err = ldpaa_dpmac_version_check(dflt_mc_io, priv);
+	if (err < 0)
+		printf("ldpaa_dpmac_version_check() failed: %d\n", err);
+
 	return err;
 }
 
-- 
2.30.2