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authorDavid Daney <ddaney@caviumnetworks.com>2009-05-05 17:35:21 -0700
committerRalf Baechle <ralf@linux-mips.org>2009-06-17 11:06:30 +0100
commit80ff0fd3ab6451407a20c19b80c1643c4a6d6434 (patch)
tree2d7021ac34269f0bce3ac18f7347bf6946640f36 /drivers/staging/octeon/ethernet-sgmii.c
parent38295fb2a09264671c82d490ce77c17d492378e0 (diff)
Staging: Add octeon-ethernet driver files.
The octeon-ethernet driver supports the sgmii, rgmii, spi, and xaui ports present on the Cavium OCTEON family of SOCs. These SOCs are multi-core mips64 processors with existing support over in arch/mips. The driver files can be categorized into three basic groups: 1) Register definitions, these are named cvmx-*-defs.h 2) Main driver code, these have names that don't start cvmx-. 3) Interface specific functions and other utility code, names starting with cvmx- Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/staging/octeon/ethernet-sgmii.c')
-rw-r--r--drivers/staging/octeon/ethernet-sgmii.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/staging/octeon/ethernet-sgmii.c b/drivers/staging/octeon/ethernet-sgmii.c
new file mode 100644
index 000000000000..58fa39c1d675
--- /dev/null
+++ b/drivers/staging/octeon/ethernet-sgmii.c
@@ -0,0 +1,129 @@
+/**********************************************************************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2007 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+**********************************************************************/
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/mii.h>
+#include <net/dst.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "ethernet-defines.h"
+#include "octeon-ethernet.h"
+#include "ethernet-util.h"
+#include "ethernet-common.h"
+
+#include "cvmx-helper.h"
+
+#include "cvmx-gmxx-defs.h"
+
+static int cvm_oct_sgmii_open(struct net_device *dev)
+{
+ union cvmx_gmxx_prtx_cfg gmx_cfg;
+ struct octeon_ethernet *priv = netdev_priv(dev);
+ int interface = INTERFACE(priv->port);
+ int index = INDEX(priv->port);
+ cvmx_helper_link_info_t link_info;
+
+ gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+ gmx_cfg.s.en = 1;
+ cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+
+ if (!octeon_is_simulation()) {
+ link_info = cvmx_helper_link_get(priv->port);
+ if (!link_info.s.link_up)
+ netif_carrier_off(dev);
+ }
+
+ return 0;
+}
+
+static int cvm_oct_sgmii_stop(struct net_device *dev)
+{
+ union cvmx_gmxx_prtx_cfg gmx_cfg;
+ struct octeon_ethernet *priv = netdev_priv(dev);
+ int interface = INTERFACE(priv->port);
+ int index = INDEX(priv->port);
+
+ gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+ gmx_cfg.s.en = 0;
+ cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+ return 0;
+}
+
+static void cvm_oct_sgmii_poll(struct net_device *dev)
+{
+ struct octeon_ethernet *priv = netdev_priv(dev);
+ cvmx_helper_link_info_t link_info;
+
+ link_info = cvmx_helper_link_get(priv->port);
+ if (link_info.u64 == priv->link_info)
+ return;
+
+ link_info = cvmx_helper_link_autoconf(priv->port);
+ priv->link_info = link_info.u64;
+
+ /* Tell Linux */
+ if (link_info.s.link_up) {
+
+ if (!netif_carrier_ok(dev))
+ netif_carrier_on(dev);
+ if (priv->queue != -1)
+ DEBUGPRINT
+ ("%s: %u Mbps %s duplex, port %2d, queue %2d\n",
+ dev->name, link_info.s.speed,
+ (link_info.s.full_duplex) ? "Full" : "Half",
+ priv->port, priv->queue);
+ else
+ DEBUGPRINT("%s: %u Mbps %s duplex, port %2d, POW\n",
+ dev->name, link_info.s.speed,
+ (link_info.s.full_duplex) ? "Full" : "Half",
+ priv->port);
+ } else {
+ if (netif_carrier_ok(dev))
+ netif_carrier_off(dev);
+ DEBUGPRINT("%s: Link down\n", dev->name);
+ }
+}
+
+int cvm_oct_sgmii_init(struct net_device *dev)
+{
+ struct octeon_ethernet *priv = netdev_priv(dev);
+ cvm_oct_common_init(dev);
+ dev->open = cvm_oct_sgmii_open;
+ dev->stop = cvm_oct_sgmii_stop;
+ dev->stop(dev);
+ if (!octeon_is_simulation())
+ priv->poll = cvm_oct_sgmii_poll;
+
+ /* FIXME: Need autoneg logic */
+ return 0;
+}
+
+void cvm_oct_sgmii_uninit(struct net_device *dev)
+{
+ cvm_oct_common_uninit(dev);
+}

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