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Wed, 9 Mar 2022 17:28:12 +0000 From: Ioana Ciornei To: davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org Cc: kishon@ti.com, vkoul@kernel.org, robh+dt@kernel.org, leoyang.li@nxp.com, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux@armlinux.org.uk, shawnguo@kernel.org, hongxing.zhu@nxp.com, Ioana Ciornei Subject: [PATCH net-next v2 5/8] dpaa2-mac: retrieve API version and detect features Date: Wed, 9 Mar 2022 19:27:45 +0200 Message-Id: <20220309172748.3460862-6-ioana.ciornei@nxp.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220309172748.3460862-1-ioana.ciornei@nxp.com> References: <20220309172748.3460862-1-ioana.ciornei@nxp.com> X-ClientProxiedBy: AM4PR07CA0014.eurprd07.prod.outlook.com (2603:10a6:205:1::27) To AM9PR04MB8555.eurprd04.prod.outlook.com (2603:10a6:20b:436::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f551cb7f-b39e-42f3-4951-08da01f22fe5 X-MS-TrafficTypeDiagnostic: GV1PR04MB9101:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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The first one to be listed is the capability to change the MAC protocol at runtime. Signed-off-by: Ioana Ciornei --- Changes in v2: - none .../net/ethernet/freescale/dpaa2/dpaa2-mac.c | 30 +++++++++++++++++++ .../net/ethernet/freescale/dpaa2/dpaa2-mac.h | 2 ++ 2 files changed, 32 insertions(+) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c index 521f036d1c00..c4a49bf10156 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c @@ -11,6 +11,28 @@ #define phylink_to_dpaa2_mac(config) \ container_of((config), struct dpaa2_mac, phylink_config) +#define DPMAC_PROTOCOL_CHANGE_VER_MAJOR 4 +#define DPMAC_PROTOCOL_CHANGE_VER_MINOR 8 + +#define DPAA2_MAC_FEATURE_PROTOCOL_CHANGE BIT(0) + +static int dpaa2_mac_cmp_ver(struct dpaa2_mac *mac, + u16 ver_major, u16 ver_minor) +{ + if (mac->ver_major == ver_major) + return mac->ver_minor - ver_minor; + return mac->ver_major - ver_major; +} + +static void dpaa2_mac_detect_features(struct dpaa2_mac *mac) +{ + mac->features = 0; + + if (dpaa2_mac_cmp_ver(mac, DPMAC_PROTOCOL_CHANGE_VER_MAJOR, + DPMAC_PROTOCOL_CHANGE_VER_MINOR) >= 0) + mac->features |= DPAA2_MAC_FEATURE_PROTOCOL_CHANGE; +} + static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode) { *if_mode = PHY_INTERFACE_MODE_NA; @@ -359,6 +381,14 @@ int dpaa2_mac_open(struct dpaa2_mac *mac) goto err_close_dpmac; } + err = dpmac_get_api_version(mac->mc_io, 0, &mac->ver_major, &mac->ver_minor); + if (err) { + netdev_err(net_dev, "dpmac_get_api_version() = %d\n", err); + goto err_close_dpmac; + } + + dpaa2_mac_detect_features(mac); + /* Find the device node representing the MAC device and link the device * behind the associated netdev to it. */ diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h index 1331a8477fe4..d2e51d21c80c 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h @@ -17,6 +17,8 @@ struct dpaa2_mac { struct net_device *net_dev; struct fsl_mc_io *mc_io; struct dpmac_attr attr; + u16 ver_major, ver_minor; + unsigned long features; struct phylink_config phylink_config; struct phylink *phylink;