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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/mips/cavium-octeon/executive/cvmx-helper-loop.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/mips/cavium-octeon/executive/cvmx-helper-loop.c')
-rw-r--r--kernel/arch/mips/cavium-octeon/executive/cvmx-helper-loop.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/kernel/arch/mips/cavium-octeon/executive/cvmx-helper-loop.c b/kernel/arch/mips/cavium-octeon/executive/cvmx-helper-loop.c
new file mode 100644
index 000000000..bfbd46115
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+++ b/kernel/arch/mips/cavium-octeon/executive/cvmx-helper-loop.c
@@ -0,0 +1,85 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 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
+ ***********************license end**************************************/
+
+/*
+ * Functions for LOOP initialization, configuration,
+ * and monitoring.
+ */
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-config.h>
+
+#include <asm/octeon/cvmx-helper.h>
+#include <asm/octeon/cvmx-pip-defs.h>
+
+/**
+ * Probe a LOOP interface and determine the number of ports
+ * connected to it. The LOOP interface should still be down
+ * after this call.
+ *
+ * @interface: Interface to probe
+ *
+ * Returns Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_loop_probe(int interface)
+{
+ union cvmx_ipd_sub_port_fcs ipd_sub_port_fcs;
+ int num_ports = 4;
+ int port;
+
+ /* We need to disable length checking so packet < 64 bytes and jumbo
+ frames don't get errors */
+ for (port = 0; port < num_ports; port++) {
+ union cvmx_pip_prt_cfgx port_cfg;
+ int ipd_port = cvmx_helper_get_ipd_port(interface, port);
+ port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
+ port_cfg.s.maxerr_en = 0;
+ port_cfg.s.minerr_en = 0;
+ cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_cfg.u64);
+ }
+
+ /* Disable FCS stripping for loopback ports */
+ ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
+ ipd_sub_port_fcs.s.port_bit2 = 0;
+ cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
+ return num_ports;
+}
+
+/**
+ * Bringup and enable a LOOP interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled.
+ *
+ * @interface: Interface to bring up
+ *
+ * Returns Zero on success, negative on failure
+ */
+int __cvmx_helper_loop_enable(int interface)
+{
+ /* Do nothing. */
+ return 0;
+}