X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?p=kvmfornfv.git;a=blobdiff_plain;f=kernel%2Fdrivers%2Fstaging%2Focteon%2Fethernet-rgmii.c;h=613344b886e1687dff3bd2ba4ebe6a1ca32eae5e;hp=e36f9bc695430bf89fefd00b9feba9fe37bcc698;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hpb=f93b97fd65072de626c074dbe099a1fff05ce060 diff --git a/kernel/drivers/staging/octeon/ethernet-rgmii.c b/kernel/drivers/staging/octeon/ethernet-rgmii.c index e36f9bc69..613344b88 100644 --- a/kernel/drivers/staging/octeon/ethernet-rgmii.c +++ b/kernel/drivers/staging/octeon/ethernet-rgmii.c @@ -1,29 +1,13 @@ -/********************************************************************* - * Author: Cavium Networks - * - * Contact: support@caviumnetworks.com - * This file is part of the OCTEON SDK +/* + * This file is based on code from OCTEON SDK by Cavium Networks. * * 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 #include #include @@ -48,6 +32,37 @@ static DEFINE_SPINLOCK(global_register_lock); static int number_rgmii_ports; +static void cvm_oct_set_hw_preamble(struct octeon_ethernet *priv, bool enable) +{ + union cvmx_gmxx_rxx_frm_ctl gmxx_rxx_frm_ctl; + union cvmx_ipd_sub_port_fcs ipd_sub_port_fcs; + union cvmx_gmxx_rxx_int_reg gmxx_rxx_int_reg; + int interface = INTERFACE(priv->port); + int index = INDEX(priv->port); + + /* Set preamble checking. */ + gmxx_rxx_frm_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, + interface)); + gmxx_rxx_frm_ctl.s.pre_chk = enable; + cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface), + gmxx_rxx_frm_ctl.u64); + + /* Set FCS stripping. */ + ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS); + if (enable) + ipd_sub_port_fcs.s.port_bit |= 1ull << priv->port; + else + ipd_sub_port_fcs.s.port_bit &= + 0xffffffffull ^ (1ull << priv->port); + cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64); + + /* Clear any error bits. */ + gmxx_rxx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, + interface)); + cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), + gmxx_rxx_int_reg.u64); +} + static void cvm_oct_rgmii_poll(struct net_device *dev) { struct octeon_ethernet *priv = netdev_priv(dev); @@ -68,14 +83,7 @@ static void cvm_oct_rgmii_poll(struct net_device *dev) link_info = cvmx_helper_link_get(priv->port); if (link_info.u64 == priv->link_info) { - - /* - * If the 10Mbps preamble workaround is supported and we're - * at 10Mbps we may need to do some special checking. - */ - if (USE_10MBPS_PREAMBLE_WORKAROUND && - (link_info.s.speed == 10)) { - + if (link_info.s.speed == 10) { /* * Read the GMXX_RXX_INT_REG[PCTERR] bit and * see if we are getting preamble errors. @@ -88,7 +96,6 @@ static void cvm_oct_rgmii_poll(struct net_device *dev) cvmx_read_csr(CVMX_GMXX_RXX_INT_REG (index, interface)); if (gmxx_rxx_int_reg.s.pcterr) { - /* * We are getting preamble errors at * 10Mbps. Most likely the PHY is @@ -97,30 +104,7 @@ static void cvm_oct_rgmii_poll(struct net_device *dev) * packets we need to disable preamble * checking and do it in software. */ - union cvmx_gmxx_rxx_frm_ctl gmxx_rxx_frm_ctl; - union cvmx_ipd_sub_port_fcs ipd_sub_port_fcs; - - /* Disable preamble checking */ - gmxx_rxx_frm_ctl.u64 = - cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL - (index, interface)); - gmxx_rxx_frm_ctl.s.pre_chk = 0; - cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL - (index, interface), - gmxx_rxx_frm_ctl.u64); - - /* Disable FCS stripping */ - ipd_sub_port_fcs.u64 = - cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS); - ipd_sub_port_fcs.s.port_bit &= - 0xffffffffull ^ (1ull << priv->port); - cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, - ipd_sub_port_fcs.u64); - - /* Clear any error bits */ - cvmx_write_csr(CVMX_GMXX_RXX_INT_REG - (index, interface), - gmxx_rxx_int_reg.u64); + cvm_oct_set_hw_preamble(priv, false); printk_ratelimited("%s: Using 10Mbps with software preamble removal\n", dev->name); } @@ -133,34 +117,13 @@ static void cvm_oct_rgmii_poll(struct net_device *dev) return; } - /* If the 10Mbps preamble workaround is allowed we need to on - preamble checking, FCS stripping, and clear error bits on - every speed change. If errors occur during 10Mbps operation - the above code will change this stuff */ - if (USE_10MBPS_PREAMBLE_WORKAROUND) { - - union cvmx_gmxx_rxx_frm_ctl gmxx_rxx_frm_ctl; - union cvmx_ipd_sub_port_fcs ipd_sub_port_fcs; - union cvmx_gmxx_rxx_int_reg gmxx_rxx_int_reg; - int interface = INTERFACE(priv->port); - int index = INDEX(priv->port); - - /* Enable preamble checking */ - gmxx_rxx_frm_ctl.u64 = - cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface)); - gmxx_rxx_frm_ctl.s.pre_chk = 1; - cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface), - gmxx_rxx_frm_ctl.u64); - /* Enable FCS stripping */ - ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS); - ipd_sub_port_fcs.s.port_bit |= 1ull << priv->port; - cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64); - /* Clear any error bits */ - gmxx_rxx_int_reg.u64 = - cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, interface)); - cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), - gmxx_rxx_int_reg.u64); - } + /* Since the 10Mbps preamble workaround is allowed we need to enable + * preamble checking, FCS stripping, and clear error bits on + * every speed change. If errors occur during 10Mbps operation + * the above code will change this stuff + */ + cvm_oct_set_hw_preamble(priv, true); + if (priv->phydev == NULL) { link_info = cvmx_helper_link_autoconf(priv->port); priv->link_info = link_info.u64; @@ -176,172 +139,75 @@ static void cvm_oct_rgmii_poll(struct net_device *dev) if (link_info.s.link_up) { if (!netif_carrier_ok(dev)) netif_carrier_on(dev); - if (priv->queue != -1) - printk_ratelimited("%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 - printk_ratelimited("%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); - printk_ratelimited("%s: Link down\n", dev->name); + } else if (netif_carrier_ok(dev)) { + netif_carrier_off(dev); } + cvm_oct_note_carrier(priv, link_info); } } -static irqreturn_t cvm_oct_rgmii_rml_interrupt(int cpl, void *dev_id) +static int cmv_oct_rgmii_gmx_interrupt(int interface) { - union cvmx_npi_rsl_int_blocks rsl_int_blocks; int index; - irqreturn_t return_status = IRQ_NONE; + int count = 0; - rsl_int_blocks.u64 = cvmx_read_csr(CVMX_NPI_RSL_INT_BLOCKS); - - /* Check and see if this interrupt was caused by the GMX0 block */ - if (rsl_int_blocks.s.gmx0) { - - int interface = 0; - /* Loop through every port of this interface */ - for (index = 0; - index < cvmx_helper_ports_on_interface(interface); - index++) { + /* Loop through every port of this interface */ + for (index = 0; + index < cvmx_helper_ports_on_interface(interface); + index++) { + union cvmx_gmxx_rxx_int_reg gmx_rx_int_reg; - /* Read the GMX interrupt status bits */ - union cvmx_gmxx_rxx_int_reg gmx_rx_int_reg; - - gmx_rx_int_reg.u64 = - cvmx_read_csr(CVMX_GMXX_RXX_INT_REG + /* Read the GMX interrupt status bits */ + gmx_rx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG (index, interface)); - gmx_rx_int_reg.u64 &= - cvmx_read_csr(CVMX_GMXX_RXX_INT_EN + gmx_rx_int_reg.u64 &= cvmx_read_csr(CVMX_GMXX_RXX_INT_EN (index, interface)); - /* Poll the port if inband status changed */ - if (gmx_rx_int_reg.s.phy_dupx - || gmx_rx_int_reg.s.phy_link - || gmx_rx_int_reg.s.phy_spd) { - struct net_device *dev = + /* Poll the port if inband status changed */ + if (gmx_rx_int_reg.s.phy_dupx || gmx_rx_int_reg.s.phy_link || + gmx_rx_int_reg.s.phy_spd) { + struct net_device *dev = cvm_oct_device[cvmx_helper_get_ipd_port (interface, index)]; - struct octeon_ethernet *priv = netdev_priv(dev); - - if (dev && - !atomic_read(&cvm_oct_poll_queue_stopping)) - queue_work(cvm_oct_poll_queue, - &priv->port_work); - - gmx_rx_int_reg.u64 = 0; - gmx_rx_int_reg.s.phy_dupx = 1; - gmx_rx_int_reg.s.phy_link = 1; - gmx_rx_int_reg.s.phy_spd = 1; - cvmx_write_csr(CVMX_GMXX_RXX_INT_REG - (index, interface), - gmx_rx_int_reg.u64); - return_status = IRQ_HANDLED; - } + struct octeon_ethernet *priv = netdev_priv(dev); + + if (dev && !atomic_read(&cvm_oct_poll_queue_stopping)) + queue_work(cvm_oct_poll_queue, + &priv->port_work); + + gmx_rx_int_reg.u64 = 0; + gmx_rx_int_reg.s.phy_dupx = 1; + gmx_rx_int_reg.s.phy_link = 1; + gmx_rx_int_reg.s.phy_spd = 1; + cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), + gmx_rx_int_reg.u64); + count++; } } + return count; +} - /* Check and see if this interrupt was caused by the GMX1 block */ - if (rsl_int_blocks.s.gmx1) { +static irqreturn_t cvm_oct_rgmii_rml_interrupt(int cpl, void *dev_id) +{ + union cvmx_npi_rsl_int_blocks rsl_int_blocks; + int count = 0; - int interface = 1; - /* Loop through every port of this interface */ - for (index = 0; - index < cvmx_helper_ports_on_interface(interface); - index++) { + rsl_int_blocks.u64 = cvmx_read_csr(CVMX_NPI_RSL_INT_BLOCKS); - /* Read the GMX interrupt status bits */ - union cvmx_gmxx_rxx_int_reg gmx_rx_int_reg; + /* Check and see if this interrupt was caused by the GMX0 block */ + if (rsl_int_blocks.s.gmx0) + count += cmv_oct_rgmii_gmx_interrupt(0); - gmx_rx_int_reg.u64 = - cvmx_read_csr(CVMX_GMXX_RXX_INT_REG - (index, interface)); - gmx_rx_int_reg.u64 &= - cvmx_read_csr(CVMX_GMXX_RXX_INT_EN - (index, interface)); - /* Poll the port if inband status changed */ - if (gmx_rx_int_reg.s.phy_dupx - || gmx_rx_int_reg.s.phy_link - || gmx_rx_int_reg.s.phy_spd) { + /* Check and see if this interrupt was caused by the GMX1 block */ + if (rsl_int_blocks.s.gmx1) + count += cmv_oct_rgmii_gmx_interrupt(1); - struct net_device *dev = - cvm_oct_device[cvmx_helper_get_ipd_port - (interface, index)]; - struct octeon_ethernet *priv = netdev_priv(dev); - - if (dev && - !atomic_read(&cvm_oct_poll_queue_stopping)) - queue_work(cvm_oct_poll_queue, - &priv->port_work); - - gmx_rx_int_reg.u64 = 0; - gmx_rx_int_reg.s.phy_dupx = 1; - gmx_rx_int_reg.s.phy_link = 1; - gmx_rx_int_reg.s.phy_spd = 1; - cvmx_write_csr(CVMX_GMXX_RXX_INT_REG - (index, interface), - gmx_rx_int_reg.u64); - return_status = IRQ_HANDLED; - } - } - } - return return_status; + return count ? IRQ_HANDLED : IRQ_NONE; } int cvm_oct_rgmii_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; - int rv; - - rv = cvm_oct_phy_setup_device(dev); - if (rv) - return rv; - - 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()) { - if (priv->phydev) { - int r = phy_read_status(priv->phydev); - - if (r == 0 && priv->phydev->link == 0) - netif_carrier_off(dev); - cvm_oct_adjust_link(dev); - } else { - link_info = cvmx_helper_link_get(priv->port); - if (!link_info.s.link_up) - netif_carrier_off(dev); - priv->poll = cvm_oct_rgmii_poll; - } - } - - return 0; -} - -int cvm_oct_rgmii_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 cvm_oct_common_stop(dev); + return cvm_oct_common_open(dev, cvm_oct_rgmii_poll); } static void cvm_oct_rgmii_immediate_poll(struct work_struct *work) @@ -357,7 +223,6 @@ int cvm_oct_rgmii_init(struct net_device *dev) int r; cvm_oct_common_init(dev); - dev->netdev_ops->ndo_stop(dev); INIT_WORK(&priv->port_work, cvm_oct_rgmii_immediate_poll); /* * Due to GMX errata in CN3XXX series chips, it is necessary