diff options
Diffstat (limited to 'drivers/staging/octeon/cvmx-helper-xaui.c')
| -rw-r--r-- | drivers/staging/octeon/cvmx-helper-xaui.c | 348 |
1 files changed, 0 insertions, 348 deletions
diff --git a/drivers/staging/octeon/cvmx-helper-xaui.c b/drivers/staging/octeon/cvmx-helper-xaui.c deleted file mode 100644 index a11e6769e234..000000000000 --- a/drivers/staging/octeon/cvmx-helper-xaui.c +++ /dev/null @@ -1,348 +0,0 @@ -/***********************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 XAUI initialization, configuration, - * and monitoring. - * - */ - -#include <asm/octeon/octeon.h> - -#include "cvmx-config.h" - -#include "cvmx-helper.h" - -#include "cvmx-pko-defs.h" -#include "cvmx-gmxx-defs.h" -#include "cvmx-pcsxx-defs.h" - -void __cvmx_interrupt_gmxx_enable(int interface); -void __cvmx_interrupt_pcsx_intx_en_reg_enable(int index, int block); -void __cvmx_interrupt_pcsxx_int_en_reg_enable(int index); -/** - * Probe a XAUI interface and determine the number of ports - * connected to it. The XAUI 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_xaui_probe(int interface) -{ - int i; - union cvmx_gmxx_hg2_control gmx_hg2_control; - union cvmx_gmxx_inf_mode mode; - - /* - * Due to errata GMX-700 on CN56XXp1.x and CN52XXp1.x, the - * interface needs to be enabled before IPD otherwise per port - * backpressure may not work properly. - */ - mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface)); - mode.s.en = 1; - cvmx_write_csr(CVMX_GMXX_INF_MODE(interface), mode.u64); - - __cvmx_helper_setup_gmx(interface, 1); - - /* - * Setup PKO to support 16 ports for HiGig2 virtual - * ports. We're pointing all of the PKO packet ports for this - * interface to the XAUI. This allows us to use HiGig2 - * backpressure per port. - */ - for (i = 0; i < 16; i++) { - union cvmx_pko_mem_port_ptrs pko_mem_port_ptrs; - pko_mem_port_ptrs.u64 = 0; - /* - * We set each PKO port to have equal priority in a - * round robin fashion. - */ - pko_mem_port_ptrs.s.static_p = 0; - pko_mem_port_ptrs.s.qos_mask = 0xff; - /* All PKO ports map to the same XAUI hardware port */ - pko_mem_port_ptrs.s.eid = interface * 4; - pko_mem_port_ptrs.s.pid = interface * 16 + i; - cvmx_write_csr(CVMX_PKO_MEM_PORT_PTRS, pko_mem_port_ptrs.u64); - } - - /* If HiGig2 is enabled return 16 ports, otherwise return 1 port */ - gmx_hg2_control.u64 = cvmx_read_csr(CVMX_GMXX_HG2_CONTROL(interface)); - if (gmx_hg2_control.s.hg2tx_en) - return 16; - else - return 1; -} - -/** - * Bringup and enable a XAUI 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_xaui_enable(int interface) -{ - union cvmx_gmxx_prtx_cfg gmx_cfg; - union cvmx_pcsxx_control1_reg xauiCtl; - union cvmx_pcsxx_misc_ctl_reg xauiMiscCtl; - union cvmx_gmxx_tx_xaui_ctl gmxXauiTxCtl; - union cvmx_gmxx_rxx_int_en gmx_rx_int_en; - union cvmx_gmxx_tx_int_en gmx_tx_int_en; - union cvmx_pcsxx_int_en_reg pcsx_int_en_reg; - - /* (1) Interface has already been enabled. */ - - /* (2) Disable GMX. */ - xauiMiscCtl.u64 = cvmx_read_csr(CVMX_PCSXX_MISC_CTL_REG(interface)); - xauiMiscCtl.s.gmxeno = 1; - cvmx_write_csr(CVMX_PCSXX_MISC_CTL_REG(interface), xauiMiscCtl.u64); - - /* (3) Disable GMX and PCSX interrupts. */ - gmx_rx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_EN(0, interface)); - cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0, interface), 0x0); - gmx_tx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_TX_INT_EN(interface)); - cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), 0x0); - pcsx_int_en_reg.u64 = cvmx_read_csr(CVMX_PCSXX_INT_EN_REG(interface)); - cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), 0x0); - - /* (4) Bring up the PCSX and GMX reconciliation layer. */ - /* (4)a Set polarity and lane swapping. */ - /* (4)b */ - gmxXauiTxCtl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface)); - /* Enable better IFG packing and improves performance */ - gmxXauiTxCtl.s.dic_en = 1; - gmxXauiTxCtl.s.uni_en = 0; - cvmx_write_csr(CVMX_GMXX_TX_XAUI_CTL(interface), gmxXauiTxCtl.u64); - - /* (4)c Aply reset sequence */ - xauiCtl.u64 = cvmx_read_csr(CVMX_PCSXX_CONTROL1_REG(interface)); - xauiCtl.s.lo_pwr = 0; - xauiCtl.s.reset = 1; - cvmx_write_csr(CVMX_PCSXX_CONTROL1_REG(interface), xauiCtl.u64); - - /* Wait for PCS to come out of reset */ - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_PCSXX_CONTROL1_REG(interface), union cvmx_pcsxx_control1_reg, - reset, ==, 0, 10000)) - return -1; - /* Wait for PCS to be aligned */ - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_PCSXX_10GBX_STATUS_REG(interface), - union cvmx_pcsxx_10gbx_status_reg, alignd, ==, 1, 10000)) - return -1; - /* Wait for RX to be ready */ - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_GMXX_RX_XAUI_CTL(interface), union cvmx_gmxx_rx_xaui_ctl, - status, ==, 0, 10000)) - return -1; - - /* (6) Configure GMX */ - gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface)); - gmx_cfg.s.en = 0; - cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64); - - /* Wait for GMX RX to be idle */ - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_GMXX_PRTX_CFG(0, interface), union cvmx_gmxx_prtx_cfg, - rx_idle, ==, 1, 10000)) - return -1; - /* Wait for GMX TX to be idle */ - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_GMXX_PRTX_CFG(0, interface), union cvmx_gmxx_prtx_cfg, - tx_idle, ==, 1, 10000)) - return -1; - - /* GMX configure */ - gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface)); - gmx_cfg.s.speed = 1; - gmx_cfg.s.speed_msb = 0; - gmx_cfg.s.slottime = 1; - cvmx_write_csr(CVMX_GMXX_TX_PRTS(interface), 1); - cvmx_write_csr(CVMX_GMXX_TXX_SLOT(0, interface), 512); - cvmx_write_csr(CVMX_GMXX_TXX_BURST(0, interface), 8192); - cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64); - - /* (7) Clear out any error state */ - cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(0, interface), - cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(0, interface))); - cvmx_write_csr(CVMX_GMXX_TX_INT_REG(interface), - cvmx_read_csr(CVMX_GMXX_TX_INT_REG(interface))); - cvmx_write_csr(CVMX_PCSXX_INT_REG(interface), - cvmx_read_csr(CVMX_PCSXX_INT_REG(interface))); - - /* Wait for receive link */ - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_PCSXX_STATUS1_REG(interface), union cvmx_pcsxx_status1_reg, - rcv_lnk, ==, 1, 10000)) - return -1; - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_PCSXX_STATUS2_REG(interface), union cvmx_pcsxx_status2_reg, - xmtflt, ==, 0, 10000)) - return -1; - if (CVMX_WAIT_FOR_FIELD64 - (CVMX_PCSXX_STATUS2_REG(interface), union cvmx_pcsxx_status2_reg, - rcvflt, ==, 0, 10000)) - return -1; - - cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0, interface), gmx_rx_int_en.u64); - cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), gmx_tx_int_en.u64); - cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), pcsx_int_en_reg.u64); - - cvmx_helper_link_autoconf(cvmx_helper_get_ipd_port(interface, 0)); - - /* (8) Enable packet reception */ - xauiMiscCtl.s.gmxeno = 0; - cvmx_write_csr(CVMX_PCSXX_MISC_CTL_REG(interface), xauiMiscCtl.u64); - - gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface)); - gmx_cfg.s.en = 1; - cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64); - - __cvmx_interrupt_pcsx_intx_en_reg_enable(0, interface); - __cvmx_interrupt_pcsx_intx_en_reg_enable(1, interface); - __cvmx_interrupt_pcsx_intx_en_reg_enable(2, interface); - __cvmx_interrupt_pcsx_intx_en_reg_enable(3, interface); - __cvmx_interrupt_pcsxx_int_en_reg_enable(interface); - __cvmx_interrupt_gmxx_enable(interface); - - return 0; -} - -/** - * Return the link state of an IPD/PKO port as returned by - * auto negotiation. The result of this function may not match - * Octeon's link config if auto negotiation has changed since - * the last call to cvmx_helper_link_set(). - * - * @ipd_port: IPD/PKO port to query - * - * Returns Link state - */ -cvmx_helper_link_info_t __cvmx_helper_xaui_link_get(int ipd_port) -{ - int interface = cvmx_helper_get_interface_num(ipd_port); - union cvmx_gmxx_tx_xaui_ctl gmxx_tx_xaui_ctl; - union cvmx_gmxx_rx_xaui_ctl gmxx_rx_xaui_ctl; - union cvmx_pcsxx_status1_reg pcsxx_status1_reg; - cvmx_helper_link_info_t result; - - gmxx_tx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface)); - gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface)); - pcsxx_status1_reg.u64 = - cvmx_read_csr(CVMX_PCSXX_STATUS1_REG(interface)); - result.u64 = 0; - - /* Only return a link if both RX and TX are happy */ - if ((gmxx_tx_xaui_ctl.s.ls == 0) && (gmxx_rx_xaui_ctl.s.status == 0) && - (pcsxx_status1_reg.s.rcv_lnk == 1)) { - result.s.link_up = 1; - result.s.full_duplex = 1; - result.s.speed = 10000; - } else { - /* Disable GMX and PCSX interrupts. */ - cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0, interface), 0x0); - cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), 0x0); - cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), 0x0); - } - return result; -} - -/** - * Configure an IPD/PKO port for the specified link state. This - * function does not influence auto negotiation at the PHY level. - * The passed link state must always match the link state returned - * by cvmx_helper_link_get(). It is normally best to use - * cvmx_helper_link_autoconf() instead. - * - * @ipd_port: IPD/PKO port to configure - * @link_info: The new link state - * - * Returns Zero on success, negative on failure - */ -int __cvmx_helper_xaui_link_set(int ipd_port, cvmx_helper_link_info_t link_info) -{ - int interface = cvmx_helper_get_interface_num(ipd_port); - union cvmx_gmxx_tx_xaui_ctl gmxx_tx_xaui_ctl; - union cvmx_gmxx_rx_xaui_ctl gmxx_rx_xaui_ctl; - - gmxx_tx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface)); - gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface)); - - /* If the link shouldn't be up, then just return */ - if (!link_info.s.link_up) - return 0; - - /* Do nothing if both RX and TX are happy */ - if ((gmxx_tx_xaui_ctl.s.ls == 0) && (gmxx_rx_xaui_ctl.s.status == 0)) - return 0; - - /* Bring the link up */ - return __cvmx_helper_xaui_enable(interface); -} - -/** - * Configure a port for internal and/or external loopback. Internal loopback - * causes packets sent by the port to be received by Octeon. External loopback - * causes packets received from the wire to sent out again. - * - * @ipd_port: IPD/PKO port to loopback. - * @enable_internal: - * Non zero if you want internal loopback - * @enable_external: - * Non zero if you want external loopback - * - * Returns Zero on success, negative on failure. - */ -extern int __cvmx_helper_xaui_configure_loopback(int ipd_port, - int enable_internal, - int enable_external) -{ - int interface = cvmx_helper_get_interface_num(ipd_port); - union cvmx_pcsxx_control1_reg pcsxx_control1_reg; - union cvmx_gmxx_xaui_ext_loopback gmxx_xaui_ext_loopback; - - /* Set the internal loop */ - pcsxx_control1_reg.u64 = - cvmx_read_csr(CVMX_PCSXX_CONTROL1_REG(interface)); - pcsxx_control1_reg.s.loopbck1 = enable_internal; - cvmx_write_csr(CVMX_PCSXX_CONTROL1_REG(interface), - pcsxx_control1_reg.u64); - - /* Set the external loop */ - gmxx_xaui_ext_loopback.u64 = - cvmx_read_csr(CVMX_GMXX_XAUI_EXT_LOOPBACK(interface)); - gmxx_xaui_ext_loopback.s.en = enable_external; - cvmx_write_csr(CVMX_GMXX_XAUI_EXT_LOOPBACK(interface), - gmxx_xaui_ext_loopback.u64); - - /* Take the link through a reset */ - return __cvmx_helper_xaui_enable(interface); -} |