1133 lines
31 KiB
C
1133 lines
31 KiB
C
/*****************************************************************************
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* *
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* File: subr.c *
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* $Revision: 1.27 $ *
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* $Date: 2005/06/22 01:08:36 $ *
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* Description: *
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* Various subroutines (intr,pio,etc.) used by Chelsio 10G Ethernet driver. *
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* part of the Chelsio 10Gb Ethernet Driver. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License, version 2, as *
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* published by the Free Software Foundation. *
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* *
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* You should have received a copy of the GNU General Public License along *
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* with this program; if not, write to the Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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* *
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED *
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF *
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
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* *
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* http://www.chelsio.com *
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* *
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* Copyright (c) 2003 - 2005 Chelsio Communications, Inc. *
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* All rights reserved. *
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* *
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* Maintainers: maintainers@chelsio.com *
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* *
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* Authors: Dimitrios Michailidis <dm@chelsio.com> *
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* Tina Yang <tainay@chelsio.com> *
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* Felix Marti <felix@chelsio.com> *
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* Scott Bardone <sbardone@chelsio.com> *
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* Kurt Ottaway <kottaway@chelsio.com> *
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* Frank DiMambro <frank@chelsio.com> *
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* *
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* History: *
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* *
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****************************************************************************/
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#include "common.h"
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#include "elmer0.h"
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#include "regs.h"
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#include "gmac.h"
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#include "cphy.h"
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#include "sge.h"
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#include "tp.h"
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#include "espi.h"
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/**
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* t1_wait_op_done - wait until an operation is completed
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* @adapter: the adapter performing the operation
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* @reg: the register to check for completion
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* @mask: a single-bit field within @reg that indicates completion
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* @polarity: the value of the field when the operation is completed
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* @attempts: number of check iterations
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* @delay: delay in usecs between iterations
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*
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* Wait until an operation is completed by checking a bit in a register
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* up to @attempts times. Returns %0 if the operation completes and %1
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* otherwise.
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*/
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static int t1_wait_op_done(adapter_t *adapter, int reg, u32 mask, int polarity,
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int attempts, int delay)
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{
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while (1) {
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u32 val = readl(adapter->regs + reg) & mask;
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if (!!val == polarity)
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return 0;
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if (--attempts == 0)
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return 1;
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if (delay)
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udelay(delay);
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}
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}
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#define TPI_ATTEMPTS 50
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/*
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* Write a register over the TPI interface (unlocked and locked versions).
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*/
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int __t1_tpi_write(adapter_t *adapter, u32 addr, u32 value)
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{
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int tpi_busy;
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writel(addr, adapter->regs + A_TPI_ADDR);
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writel(value, adapter->regs + A_TPI_WR_DATA);
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writel(F_TPIWR, adapter->regs + A_TPI_CSR);
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tpi_busy = t1_wait_op_done(adapter, A_TPI_CSR, F_TPIRDY, 1,
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TPI_ATTEMPTS, 3);
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if (tpi_busy)
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pr_alert("%s: TPI write to 0x%x failed\n",
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adapter->name, addr);
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return tpi_busy;
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}
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int t1_tpi_write(adapter_t *adapter, u32 addr, u32 value)
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{
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int ret;
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spin_lock(&adapter->tpi_lock);
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ret = __t1_tpi_write(adapter, addr, value);
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spin_unlock(&adapter->tpi_lock);
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return ret;
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}
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/*
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* Read a register over the TPI interface (unlocked and locked versions).
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*/
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int __t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp)
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{
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int tpi_busy;
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writel(addr, adapter->regs + A_TPI_ADDR);
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writel(0, adapter->regs + A_TPI_CSR);
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tpi_busy = t1_wait_op_done(adapter, A_TPI_CSR, F_TPIRDY, 1,
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TPI_ATTEMPTS, 3);
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if (tpi_busy)
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pr_alert("%s: TPI read from 0x%x failed\n",
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adapter->name, addr);
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else
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*valp = readl(adapter->regs + A_TPI_RD_DATA);
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return tpi_busy;
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}
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int t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp)
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{
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int ret;
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spin_lock(&adapter->tpi_lock);
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ret = __t1_tpi_read(adapter, addr, valp);
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spin_unlock(&adapter->tpi_lock);
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return ret;
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}
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/*
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* Set a TPI parameter.
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*/
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static void t1_tpi_par(adapter_t *adapter, u32 value)
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{
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writel(V_TPIPAR(value), adapter->regs + A_TPI_PAR);
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}
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/*
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* Called when a port's link settings change to propagate the new values to the
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* associated PHY and MAC. After performing the common tasks it invokes an
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* OS-specific handler.
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*/
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void t1_link_changed(adapter_t *adapter, int port_id)
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{
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int link_ok, speed, duplex, fc;
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struct cphy *phy = adapter->port[port_id].phy;
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struct link_config *lc = &adapter->port[port_id].link_config;
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phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc);
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lc->speed = speed < 0 ? SPEED_INVALID : speed;
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lc->duplex = duplex < 0 ? DUPLEX_INVALID : duplex;
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if (!(lc->requested_fc & PAUSE_AUTONEG))
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fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
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if (link_ok && speed >= 0 && lc->autoneg == AUTONEG_ENABLE) {
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/* Set MAC speed, duplex, and flow control to match PHY. */
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struct cmac *mac = adapter->port[port_id].mac;
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mac->ops->set_speed_duplex_fc(mac, speed, duplex, fc);
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lc->fc = (unsigned char)fc;
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}
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t1_link_negotiated(adapter, port_id, link_ok, speed, duplex, fc);
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}
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static int t1_pci_intr_handler(adapter_t *adapter)
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{
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u32 pcix_cause;
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pci_read_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, &pcix_cause);
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if (pcix_cause) {
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pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE,
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pcix_cause);
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t1_fatal_err(adapter); /* PCI errors are fatal */
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}
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return 0;
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}
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#ifdef CONFIG_CHELSIO_T1_1G
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#include "fpga_defs.h"
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/*
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* PHY interrupt handler for FPGA boards.
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*/
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static int fpga_phy_intr_handler(adapter_t *adapter)
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{
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int p;
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u32 cause = readl(adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
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for_each_port(adapter, p)
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if (cause & (1 << p)) {
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struct cphy *phy = adapter->port[p].phy;
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int phy_cause = phy->ops->interrupt_handler(phy);
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if (phy_cause & cphy_cause_link_change)
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t1_link_changed(adapter, p);
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}
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writel(cause, adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
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return 0;
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}
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/*
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* Slow path interrupt handler for FPGAs.
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*/
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static int fpga_slow_intr(adapter_t *adapter)
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{
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u32 cause = readl(adapter->regs + A_PL_CAUSE);
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cause &= ~F_PL_INTR_SGE_DATA;
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if (cause & F_PL_INTR_SGE_ERR)
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t1_sge_intr_error_handler(adapter->sge);
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if (cause & FPGA_PCIX_INTERRUPT_GMAC)
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fpga_phy_intr_handler(adapter);
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if (cause & FPGA_PCIX_INTERRUPT_TP) {
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/*
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* FPGA doesn't support MC4 interrupts and it requires
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* this odd layer of indirection for MC5.
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*/
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u32 tp_cause = readl(adapter->regs + FPGA_TP_ADDR_INTERRUPT_CAUSE);
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/* Clear TP interrupt */
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writel(tp_cause, adapter->regs + FPGA_TP_ADDR_INTERRUPT_CAUSE);
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}
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if (cause & FPGA_PCIX_INTERRUPT_PCIX)
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t1_pci_intr_handler(adapter);
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/* Clear the interrupts just processed. */
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if (cause)
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writel(cause, adapter->regs + A_PL_CAUSE);
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return cause != 0;
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}
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#endif
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/*
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* Wait until Elmer's MI1 interface is ready for new operations.
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*/
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static int mi1_wait_until_ready(adapter_t *adapter, int mi1_reg)
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{
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int attempts = 100, busy;
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do {
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u32 val;
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__t1_tpi_read(adapter, mi1_reg, &val);
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busy = val & F_MI1_OP_BUSY;
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if (busy)
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udelay(10);
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} while (busy && --attempts);
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if (busy)
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pr_alert("%s: MDIO operation timed out\n", adapter->name);
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return busy;
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}
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/*
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* MI1 MDIO initialization.
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*/
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static void mi1_mdio_init(adapter_t *adapter, const struct board_info *bi)
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{
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u32 clkdiv = bi->clock_elmer0 / (2 * bi->mdio_mdc) - 1;
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u32 val = F_MI1_PREAMBLE_ENABLE | V_MI1_MDI_INVERT(bi->mdio_mdiinv) |
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V_MI1_MDI_ENABLE(bi->mdio_mdien) | V_MI1_CLK_DIV(clkdiv);
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if (!(bi->caps & SUPPORTED_10000baseT_Full))
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val |= V_MI1_SOF(1);
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t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_CFG, val);
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}
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#if defined(CONFIG_CHELSIO_T1_1G)
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/*
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* Elmer MI1 MDIO read/write operations.
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*/
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static int mi1_mdio_read(struct net_device *dev, int phy_addr, int mmd_addr,
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u16 reg_addr)
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{
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struct adapter *adapter = dev->ml_priv;
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u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
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unsigned int val;
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spin_lock(&adapter->tpi_lock);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
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__t1_tpi_write(adapter,
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A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_READ);
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mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
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__t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, &val);
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spin_unlock(&adapter->tpi_lock);
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return val;
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}
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static int mi1_mdio_write(struct net_device *dev, int phy_addr, int mmd_addr,
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u16 reg_addr, u16 val)
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{
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struct adapter *adapter = dev->ml_priv;
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u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
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spin_lock(&adapter->tpi_lock);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);
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__t1_tpi_write(adapter,
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A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_WRITE);
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mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
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spin_unlock(&adapter->tpi_lock);
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return 0;
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}
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#if defined(CONFIG_CHELSIO_T1_1G)
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static const struct mdio_ops mi1_mdio_ops = {
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.init = mi1_mdio_init,
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.read = mi1_mdio_read,
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.write = mi1_mdio_write,
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.mode_support = MDIO_SUPPORTS_C22
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};
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#endif
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#endif
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static int mi1_mdio_ext_read(struct net_device *dev, int phy_addr, int mmd_addr,
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u16 reg_addr)
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{
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struct adapter *adapter = dev->ml_priv;
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u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);
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unsigned int val;
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spin_lock(&adapter->tpi_lock);
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/* Write the address we want. */
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,
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MI1_OP_INDIRECT_ADDRESS);
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mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
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/* Write the operation we want. */
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__t1_tpi_write(adapter,
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A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_READ);
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mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
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/* Read the data. */
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__t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, &val);
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spin_unlock(&adapter->tpi_lock);
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return val;
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}
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static int mi1_mdio_ext_write(struct net_device *dev, int phy_addr,
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int mmd_addr, u16 reg_addr, u16 val)
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{
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struct adapter *adapter = dev->ml_priv;
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u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);
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spin_lock(&adapter->tpi_lock);
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/* Write the address we want. */
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,
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MI1_OP_INDIRECT_ADDRESS);
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mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
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/* Write the data. */
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);
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__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_WRITE);
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mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
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spin_unlock(&adapter->tpi_lock);
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return 0;
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}
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static const struct mdio_ops mi1_mdio_ext_ops = {
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.init = mi1_mdio_init,
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.read = mi1_mdio_ext_read,
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.write = mi1_mdio_ext_write,
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.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22
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};
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enum {
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CH_BRD_T110_1CU,
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CH_BRD_N110_1F,
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CH_BRD_N210_1F,
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CH_BRD_T210_1F,
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CH_BRD_T210_1CU,
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CH_BRD_N204_4CU,
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};
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static const struct board_info t1_board[] = {
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{
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.board = CHBT_BOARD_CHT110,
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.port_number = 1,
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.caps = SUPPORTED_10000baseT_Full,
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.chip_term = CHBT_TERM_T1,
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.chip_mac = CHBT_MAC_PM3393,
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.chip_phy = CHBT_PHY_MY3126,
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.clock_core = 125000000,
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.clock_mc3 = 150000000,
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.clock_mc4 = 125000000,
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.espi_nports = 1,
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.clock_elmer0 = 44,
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.mdio_mdien = 1,
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.mdio_mdiinv = 1,
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.mdio_mdc = 1,
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.mdio_phybaseaddr = 1,
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.gmac = &t1_pm3393_ops,
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.gphy = &t1_my3126_ops,
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.mdio_ops = &mi1_mdio_ext_ops,
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.desc = "Chelsio T110 1x10GBase-CX4 TOE",
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},
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{
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.board = CHBT_BOARD_N110,
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.port_number = 1,
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.caps = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE,
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.chip_term = CHBT_TERM_T1,
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.chip_mac = CHBT_MAC_PM3393,
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.chip_phy = CHBT_PHY_88X2010,
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.clock_core = 125000000,
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.espi_nports = 1,
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.clock_elmer0 = 44,
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.mdio_mdien = 0,
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.mdio_mdiinv = 0,
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.mdio_mdc = 1,
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.mdio_phybaseaddr = 0,
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.gmac = &t1_pm3393_ops,
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.gphy = &t1_mv88x201x_ops,
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.mdio_ops = &mi1_mdio_ext_ops,
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.desc = "Chelsio N110 1x10GBaseX NIC",
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},
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{
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.board = CHBT_BOARD_N210,
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.port_number = 1,
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.caps = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE,
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.chip_term = CHBT_TERM_T2,
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.chip_mac = CHBT_MAC_PM3393,
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.chip_phy = CHBT_PHY_88X2010,
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.clock_core = 125000000,
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.espi_nports = 1,
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.clock_elmer0 = 44,
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.mdio_mdien = 0,
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.mdio_mdiinv = 0,
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.mdio_mdc = 1,
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.mdio_phybaseaddr = 0,
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.gmac = &t1_pm3393_ops,
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.gphy = &t1_mv88x201x_ops,
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.mdio_ops = &mi1_mdio_ext_ops,
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.desc = "Chelsio N210 1x10GBaseX NIC",
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},
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{
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.board = CHBT_BOARD_CHT210,
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.port_number = 1,
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.caps = SUPPORTED_10000baseT_Full,
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.chip_term = CHBT_TERM_T2,
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.chip_mac = CHBT_MAC_PM3393,
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.chip_phy = CHBT_PHY_88X2010,
|
|
.clock_core = 125000000,
|
|
.clock_mc3 = 133000000,
|
|
.clock_mc4 = 125000000,
|
|
.espi_nports = 1,
|
|
.clock_elmer0 = 44,
|
|
.mdio_mdien = 0,
|
|
.mdio_mdiinv = 0,
|
|
.mdio_mdc = 1,
|
|
.mdio_phybaseaddr = 0,
|
|
.gmac = &t1_pm3393_ops,
|
|
.gphy = &t1_mv88x201x_ops,
|
|
.mdio_ops = &mi1_mdio_ext_ops,
|
|
.desc = "Chelsio T210 1x10GBaseX TOE",
|
|
},
|
|
|
|
{
|
|
.board = CHBT_BOARD_CHT210,
|
|
.port_number = 1,
|
|
.caps = SUPPORTED_10000baseT_Full,
|
|
.chip_term = CHBT_TERM_T2,
|
|
.chip_mac = CHBT_MAC_PM3393,
|
|
.chip_phy = CHBT_PHY_MY3126,
|
|
.clock_core = 125000000,
|
|
.clock_mc3 = 133000000,
|
|
.clock_mc4 = 125000000,
|
|
.espi_nports = 1,
|
|
.clock_elmer0 = 44,
|
|
.mdio_mdien = 1,
|
|
.mdio_mdiinv = 1,
|
|
.mdio_mdc = 1,
|
|
.mdio_phybaseaddr = 1,
|
|
.gmac = &t1_pm3393_ops,
|
|
.gphy = &t1_my3126_ops,
|
|
.mdio_ops = &mi1_mdio_ext_ops,
|
|
.desc = "Chelsio T210 1x10GBase-CX4 TOE",
|
|
},
|
|
|
|
#ifdef CONFIG_CHELSIO_T1_1G
|
|
{
|
|
.board = CHBT_BOARD_CHN204,
|
|
.port_number = 4,
|
|
.caps = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full
|
|
| SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full
|
|
| SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
|
|
SUPPORTED_PAUSE | SUPPORTED_TP,
|
|
.chip_term = CHBT_TERM_T2,
|
|
.chip_mac = CHBT_MAC_VSC7321,
|
|
.chip_phy = CHBT_PHY_88E1111,
|
|
.clock_core = 100000000,
|
|
.espi_nports = 4,
|
|
.clock_elmer0 = 44,
|
|
.mdio_mdien = 0,
|
|
.mdio_mdiinv = 0,
|
|
.mdio_mdc = 0,
|
|
.mdio_phybaseaddr = 4,
|
|
.gmac = &t1_vsc7326_ops,
|
|
.gphy = &t1_mv88e1xxx_ops,
|
|
.mdio_ops = &mi1_mdio_ops,
|
|
.desc = "Chelsio N204 4x100/1000BaseT NIC",
|
|
},
|
|
#endif
|
|
|
|
};
|
|
|
|
DEFINE_PCI_DEVICE_TABLE(t1_pci_tbl) = {
|
|
CH_DEVICE(8, 0, CH_BRD_T110_1CU),
|
|
CH_DEVICE(8, 1, CH_BRD_T110_1CU),
|
|
CH_DEVICE(7, 0, CH_BRD_N110_1F),
|
|
CH_DEVICE(10, 1, CH_BRD_N210_1F),
|
|
CH_DEVICE(11, 1, CH_BRD_T210_1F),
|
|
CH_DEVICE(14, 1, CH_BRD_T210_1CU),
|
|
CH_DEVICE(16, 1, CH_BRD_N204_4CU),
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, t1_pci_tbl);
|
|
|
|
/*
|
|
* Return the board_info structure with a given index. Out-of-range indices
|
|
* return NULL.
|
|
*/
|
|
const struct board_info *t1_get_board_info(unsigned int board_id)
|
|
{
|
|
return board_id < ARRAY_SIZE(t1_board) ? &t1_board[board_id] : NULL;
|
|
}
|
|
|
|
struct chelsio_vpd_t {
|
|
u32 format_version;
|
|
u8 serial_number[16];
|
|
u8 mac_base_address[6];
|
|
u8 pad[2]; /* make multiple-of-4 size requirement explicit */
|
|
};
|
|
|
|
#define EEPROMSIZE (8 * 1024)
|
|
#define EEPROM_MAX_POLL 4
|
|
|
|
/*
|
|
* Read SEEPROM. A zero is written to the flag register when the addres is
|
|
* written to the Control register. The hardware device will set the flag to a
|
|
* one when 4B have been transferred to the Data register.
|
|
*/
|
|
int t1_seeprom_read(adapter_t *adapter, u32 addr, __le32 *data)
|
|
{
|
|
int i = EEPROM_MAX_POLL;
|
|
u16 val;
|
|
u32 v;
|
|
|
|
if (addr >= EEPROMSIZE || (addr & 3))
|
|
return -EINVAL;
|
|
|
|
pci_write_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, (u16)addr);
|
|
do {
|
|
udelay(50);
|
|
pci_read_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, &val);
|
|
} while (!(val & F_VPD_OP_FLAG) && --i);
|
|
|
|
if (!(val & F_VPD_OP_FLAG)) {
|
|
pr_err("%s: reading EEPROM address 0x%x failed\n",
|
|
adapter->name, addr);
|
|
return -EIO;
|
|
}
|
|
pci_read_config_dword(adapter->pdev, A_PCICFG_VPD_DATA, &v);
|
|
*data = cpu_to_le32(v);
|
|
return 0;
|
|
}
|
|
|
|
static int t1_eeprom_vpd_get(adapter_t *adapter, struct chelsio_vpd_t *vpd)
|
|
{
|
|
int addr, ret = 0;
|
|
|
|
for (addr = 0; !ret && addr < sizeof(*vpd); addr += sizeof(u32))
|
|
ret = t1_seeprom_read(adapter, addr,
|
|
(__le32 *)((u8 *)vpd + addr));
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Read a port's MAC address from the VPD ROM.
|
|
*/
|
|
static int vpd_macaddress_get(adapter_t *adapter, int index, u8 mac_addr[])
|
|
{
|
|
struct chelsio_vpd_t vpd;
|
|
|
|
if (t1_eeprom_vpd_get(adapter, &vpd))
|
|
return 1;
|
|
memcpy(mac_addr, vpd.mac_base_address, 5);
|
|
mac_addr[5] = vpd.mac_base_address[5] + index;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set up the MAC/PHY according to the requested link settings.
|
|
*
|
|
* If the PHY can auto-negotiate first decide what to advertise, then
|
|
* enable/disable auto-negotiation as desired and reset.
|
|
*
|
|
* If the PHY does not auto-negotiate we just reset it.
|
|
*
|
|
* If auto-negotiation is off set the MAC to the proper speed/duplex/FC,
|
|
* otherwise do it later based on the outcome of auto-negotiation.
|
|
*/
|
|
int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc)
|
|
{
|
|
unsigned int fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
|
|
|
|
if (lc->supported & SUPPORTED_Autoneg) {
|
|
lc->advertising &= ~(ADVERTISED_ASYM_PAUSE | ADVERTISED_PAUSE);
|
|
if (fc) {
|
|
if (fc == ((PAUSE_RX | PAUSE_TX) &
|
|
(mac->adapter->params.nports < 2)))
|
|
lc->advertising |= ADVERTISED_PAUSE;
|
|
else {
|
|
lc->advertising |= ADVERTISED_ASYM_PAUSE;
|
|
if (fc == PAUSE_RX)
|
|
lc->advertising |= ADVERTISED_PAUSE;
|
|
}
|
|
}
|
|
phy->ops->advertise(phy, lc->advertising);
|
|
|
|
if (lc->autoneg == AUTONEG_DISABLE) {
|
|
lc->speed = lc->requested_speed;
|
|
lc->duplex = lc->requested_duplex;
|
|
lc->fc = (unsigned char)fc;
|
|
mac->ops->set_speed_duplex_fc(mac, lc->speed,
|
|
lc->duplex, fc);
|
|
/* Also disables autoneg */
|
|
phy->state = PHY_AUTONEG_RDY;
|
|
phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex);
|
|
phy->ops->reset(phy, 0);
|
|
} else {
|
|
phy->state = PHY_AUTONEG_EN;
|
|
phy->ops->autoneg_enable(phy); /* also resets PHY */
|
|
}
|
|
} else {
|
|
phy->state = PHY_AUTONEG_RDY;
|
|
mac->ops->set_speed_duplex_fc(mac, -1, -1, fc);
|
|
lc->fc = (unsigned char)fc;
|
|
phy->ops->reset(phy, 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* External interrupt handler for boards using elmer0.
|
|
*/
|
|
int t1_elmer0_ext_intr_handler(adapter_t *adapter)
|
|
{
|
|
struct cphy *phy;
|
|
int phy_cause;
|
|
u32 cause;
|
|
|
|
t1_tpi_read(adapter, A_ELMER0_INT_CAUSE, &cause);
|
|
|
|
switch (board_info(adapter)->board) {
|
|
#ifdef CONFIG_CHELSIO_T1_1G
|
|
case CHBT_BOARD_CHT204:
|
|
case CHBT_BOARD_CHT204E:
|
|
case CHBT_BOARD_CHN204:
|
|
case CHBT_BOARD_CHT204V: {
|
|
int i, port_bit;
|
|
for_each_port(adapter, i) {
|
|
port_bit = i + 1;
|
|
if (!(cause & (1 << port_bit)))
|
|
continue;
|
|
|
|
phy = adapter->port[i].phy;
|
|
phy_cause = phy->ops->interrupt_handler(phy);
|
|
if (phy_cause & cphy_cause_link_change)
|
|
t1_link_changed(adapter, i);
|
|
}
|
|
break;
|
|
}
|
|
case CHBT_BOARD_CHT101:
|
|
if (cause & ELMER0_GP_BIT1) { /* Marvell 88E1111 interrupt */
|
|
phy = adapter->port[0].phy;
|
|
phy_cause = phy->ops->interrupt_handler(phy);
|
|
if (phy_cause & cphy_cause_link_change)
|
|
t1_link_changed(adapter, 0);
|
|
}
|
|
break;
|
|
case CHBT_BOARD_7500: {
|
|
int p;
|
|
/*
|
|
* Elmer0's interrupt cause isn't useful here because there is
|
|
* only one bit that can be set for all 4 ports. This means
|
|
* we are forced to check every PHY's interrupt status
|
|
* register to see who initiated the interrupt.
|
|
*/
|
|
for_each_port(adapter, p) {
|
|
phy = adapter->port[p].phy;
|
|
phy_cause = phy->ops->interrupt_handler(phy);
|
|
if (phy_cause & cphy_cause_link_change)
|
|
t1_link_changed(adapter, p);
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
case CHBT_BOARD_CHT210:
|
|
case CHBT_BOARD_N210:
|
|
case CHBT_BOARD_N110:
|
|
if (cause & ELMER0_GP_BIT6) { /* Marvell 88x2010 interrupt */
|
|
phy = adapter->port[0].phy;
|
|
phy_cause = phy->ops->interrupt_handler(phy);
|
|
if (phy_cause & cphy_cause_link_change)
|
|
t1_link_changed(adapter, 0);
|
|
}
|
|
break;
|
|
case CHBT_BOARD_8000:
|
|
case CHBT_BOARD_CHT110:
|
|
if (netif_msg_intr(adapter))
|
|
dev_dbg(&adapter->pdev->dev,
|
|
"External interrupt cause 0x%x\n", cause);
|
|
if (cause & ELMER0_GP_BIT1) { /* PMC3393 INTB */
|
|
struct cmac *mac = adapter->port[0].mac;
|
|
|
|
mac->ops->interrupt_handler(mac);
|
|
}
|
|
if (cause & ELMER0_GP_BIT5) { /* XPAK MOD_DETECT */
|
|
u32 mod_detect;
|
|
|
|
t1_tpi_read(adapter,
|
|
A_ELMER0_GPI_STAT, &mod_detect);
|
|
if (netif_msg_link(adapter))
|
|
dev_info(&adapter->pdev->dev, "XPAK %s\n",
|
|
mod_detect ? "removed" : "inserted");
|
|
}
|
|
break;
|
|
}
|
|
t1_tpi_write(adapter, A_ELMER0_INT_CAUSE, cause);
|
|
return 0;
|
|
}
|
|
|
|
/* Enables all interrupts. */
|
|
void t1_interrupts_enable(adapter_t *adapter)
|
|
{
|
|
unsigned int i;
|
|
|
|
adapter->slow_intr_mask = F_PL_INTR_SGE_ERR | F_PL_INTR_TP;
|
|
|
|
t1_sge_intr_enable(adapter->sge);
|
|
t1_tp_intr_enable(adapter->tp);
|
|
if (adapter->espi) {
|
|
adapter->slow_intr_mask |= F_PL_INTR_ESPI;
|
|
t1_espi_intr_enable(adapter->espi);
|
|
}
|
|
|
|
/* Enable MAC/PHY interrupts for each port. */
|
|
for_each_port(adapter, i) {
|
|
adapter->port[i].mac->ops->interrupt_enable(adapter->port[i].mac);
|
|
adapter->port[i].phy->ops->interrupt_enable(adapter->port[i].phy);
|
|
}
|
|
|
|
/* Enable PCIX & external chip interrupts on ASIC boards. */
|
|
if (t1_is_asic(adapter)) {
|
|
u32 pl_intr = readl(adapter->regs + A_PL_ENABLE);
|
|
|
|
/* PCI-X interrupts */
|
|
pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE,
|
|
0xffffffff);
|
|
|
|
adapter->slow_intr_mask |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
|
|
pl_intr |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
|
|
writel(pl_intr, adapter->regs + A_PL_ENABLE);
|
|
}
|
|
}
|
|
|
|
/* Disables all interrupts. */
|
|
void t1_interrupts_disable(adapter_t* adapter)
|
|
{
|
|
unsigned int i;
|
|
|
|
t1_sge_intr_disable(adapter->sge);
|
|
t1_tp_intr_disable(adapter->tp);
|
|
if (adapter->espi)
|
|
t1_espi_intr_disable(adapter->espi);
|
|
|
|
/* Disable MAC/PHY interrupts for each port. */
|
|
for_each_port(adapter, i) {
|
|
adapter->port[i].mac->ops->interrupt_disable(adapter->port[i].mac);
|
|
adapter->port[i].phy->ops->interrupt_disable(adapter->port[i].phy);
|
|
}
|
|
|
|
/* Disable PCIX & external chip interrupts. */
|
|
if (t1_is_asic(adapter))
|
|
writel(0, adapter->regs + A_PL_ENABLE);
|
|
|
|
/* PCI-X interrupts */
|
|
pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE, 0);
|
|
|
|
adapter->slow_intr_mask = 0;
|
|
}
|
|
|
|
/* Clears all interrupts */
|
|
void t1_interrupts_clear(adapter_t* adapter)
|
|
{
|
|
unsigned int i;
|
|
|
|
t1_sge_intr_clear(adapter->sge);
|
|
t1_tp_intr_clear(adapter->tp);
|
|
if (adapter->espi)
|
|
t1_espi_intr_clear(adapter->espi);
|
|
|
|
/* Clear MAC/PHY interrupts for each port. */
|
|
for_each_port(adapter, i) {
|
|
adapter->port[i].mac->ops->interrupt_clear(adapter->port[i].mac);
|
|
adapter->port[i].phy->ops->interrupt_clear(adapter->port[i].phy);
|
|
}
|
|
|
|
/* Enable interrupts for external devices. */
|
|
if (t1_is_asic(adapter)) {
|
|
u32 pl_intr = readl(adapter->regs + A_PL_CAUSE);
|
|
|
|
writel(pl_intr | F_PL_INTR_EXT | F_PL_INTR_PCIX,
|
|
adapter->regs + A_PL_CAUSE);
|
|
}
|
|
|
|
/* PCI-X interrupts */
|
|
pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, 0xffffffff);
|
|
}
|
|
|
|
/*
|
|
* Slow path interrupt handler for ASICs.
|
|
*/
|
|
static int asic_slow_intr(adapter_t *adapter)
|
|
{
|
|
u32 cause = readl(adapter->regs + A_PL_CAUSE);
|
|
|
|
cause &= adapter->slow_intr_mask;
|
|
if (!cause)
|
|
return 0;
|
|
if (cause & F_PL_INTR_SGE_ERR)
|
|
t1_sge_intr_error_handler(adapter->sge);
|
|
if (cause & F_PL_INTR_TP)
|
|
t1_tp_intr_handler(adapter->tp);
|
|
if (cause & F_PL_INTR_ESPI)
|
|
t1_espi_intr_handler(adapter->espi);
|
|
if (cause & F_PL_INTR_PCIX)
|
|
t1_pci_intr_handler(adapter);
|
|
if (cause & F_PL_INTR_EXT)
|
|
t1_elmer0_ext_intr(adapter);
|
|
|
|
/* Clear the interrupts just processed. */
|
|
writel(cause, adapter->regs + A_PL_CAUSE);
|
|
readl(adapter->regs + A_PL_CAUSE); /* flush writes */
|
|
return 1;
|
|
}
|
|
|
|
int t1_slow_intr_handler(adapter_t *adapter)
|
|
{
|
|
#ifdef CONFIG_CHELSIO_T1_1G
|
|
if (!t1_is_asic(adapter))
|
|
return fpga_slow_intr(adapter);
|
|
#endif
|
|
return asic_slow_intr(adapter);
|
|
}
|
|
|
|
/* Power sequencing is a work-around for Intel's XPAKs. */
|
|
static void power_sequence_xpak(adapter_t* adapter)
|
|
{
|
|
u32 mod_detect;
|
|
u32 gpo;
|
|
|
|
/* Check for XPAK */
|
|
t1_tpi_read(adapter, A_ELMER0_GPI_STAT, &mod_detect);
|
|
if (!(ELMER0_GP_BIT5 & mod_detect)) {
|
|
/* XPAK is present */
|
|
t1_tpi_read(adapter, A_ELMER0_GPO, &gpo);
|
|
gpo |= ELMER0_GP_BIT18;
|
|
t1_tpi_write(adapter, A_ELMER0_GPO, gpo);
|
|
}
|
|
}
|
|
|
|
int __devinit t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
|
|
struct adapter_params *p)
|
|
{
|
|
p->chip_version = bi->chip_term;
|
|
p->is_asic = (p->chip_version != CHBT_TERM_FPGA);
|
|
if (p->chip_version == CHBT_TERM_T1 ||
|
|
p->chip_version == CHBT_TERM_T2 ||
|
|
p->chip_version == CHBT_TERM_FPGA) {
|
|
u32 val = readl(adapter->regs + A_TP_PC_CONFIG);
|
|
|
|
val = G_TP_PC_REV(val);
|
|
if (val == 2)
|
|
p->chip_revision = TERM_T1B;
|
|
else if (val == 3)
|
|
p->chip_revision = TERM_T2;
|
|
else
|
|
return -1;
|
|
} else
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Enable board components other than the Chelsio chip, such as external MAC
|
|
* and PHY.
|
|
*/
|
|
static int board_init(adapter_t *adapter, const struct board_info *bi)
|
|
{
|
|
switch (bi->board) {
|
|
case CHBT_BOARD_8000:
|
|
case CHBT_BOARD_N110:
|
|
case CHBT_BOARD_N210:
|
|
case CHBT_BOARD_CHT210:
|
|
t1_tpi_par(adapter, 0xf);
|
|
t1_tpi_write(adapter, A_ELMER0_GPO, 0x800);
|
|
break;
|
|
case CHBT_BOARD_CHT110:
|
|
t1_tpi_par(adapter, 0xf);
|
|
t1_tpi_write(adapter, A_ELMER0_GPO, 0x1800);
|
|
|
|
/* TBD XXX Might not need. This fixes a problem
|
|
* described in the Intel SR XPAK errata.
|
|
*/
|
|
power_sequence_xpak(adapter);
|
|
break;
|
|
#ifdef CONFIG_CHELSIO_T1_1G
|
|
case CHBT_BOARD_CHT204E:
|
|
/* add config space write here */
|
|
case CHBT_BOARD_CHT204:
|
|
case CHBT_BOARD_CHT204V:
|
|
case CHBT_BOARD_CHN204:
|
|
t1_tpi_par(adapter, 0xf);
|
|
t1_tpi_write(adapter, A_ELMER0_GPO, 0x804);
|
|
break;
|
|
case CHBT_BOARD_CHT101:
|
|
case CHBT_BOARD_7500:
|
|
t1_tpi_par(adapter, 0xf);
|
|
t1_tpi_write(adapter, A_ELMER0_GPO, 0x1804);
|
|
break;
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Initialize and configure the Terminator HW modules. Note that external
|
|
* MAC and PHYs are initialized separately.
|
|
*/
|
|
int t1_init_hw_modules(adapter_t *adapter)
|
|
{
|
|
int err = -EIO;
|
|
const struct board_info *bi = board_info(adapter);
|
|
|
|
if (!bi->clock_mc4) {
|
|
u32 val = readl(adapter->regs + A_MC4_CFG);
|
|
|
|
writel(val | F_READY | F_MC4_SLOW, adapter->regs + A_MC4_CFG);
|
|
writel(F_M_BUS_ENABLE | F_TCAM_RESET,
|
|
adapter->regs + A_MC5_CONFIG);
|
|
}
|
|
|
|
if (adapter->espi && t1_espi_init(adapter->espi, bi->chip_mac,
|
|
bi->espi_nports))
|
|
goto out_err;
|
|
|
|
if (t1_tp_reset(adapter->tp, &adapter->params.tp, bi->clock_core))
|
|
goto out_err;
|
|
|
|
err = t1_sge_configure(adapter->sge, &adapter->params.sge);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
err = 0;
|
|
out_err:
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Determine a card's PCI mode.
|
|
*/
|
|
static void __devinit get_pci_mode(adapter_t *adapter, struct chelsio_pci_params *p)
|
|
{
|
|
static const unsigned short speed_map[] = { 33, 66, 100, 133 };
|
|
u32 pci_mode;
|
|
|
|
pci_read_config_dword(adapter->pdev, A_PCICFG_MODE, &pci_mode);
|
|
p->speed = speed_map[G_PCI_MODE_CLK(pci_mode)];
|
|
p->width = (pci_mode & F_PCI_MODE_64BIT) ? 64 : 32;
|
|
p->is_pcix = (pci_mode & F_PCI_MODE_PCIX) != 0;
|
|
}
|
|
|
|
/*
|
|
* Release the structures holding the SW per-Terminator-HW-module state.
|
|
*/
|
|
void t1_free_sw_modules(adapter_t *adapter)
|
|
{
|
|
unsigned int i;
|
|
|
|
for_each_port(adapter, i) {
|
|
struct cmac *mac = adapter->port[i].mac;
|
|
struct cphy *phy = adapter->port[i].phy;
|
|
|
|
if (mac)
|
|
mac->ops->destroy(mac);
|
|
if (phy)
|
|
phy->ops->destroy(phy);
|
|
}
|
|
|
|
if (adapter->sge)
|
|
t1_sge_destroy(adapter->sge);
|
|
if (adapter->tp)
|
|
t1_tp_destroy(adapter->tp);
|
|
if (adapter->espi)
|
|
t1_espi_destroy(adapter->espi);
|
|
}
|
|
|
|
static void __devinit init_link_config(struct link_config *lc,
|
|
const struct board_info *bi)
|
|
{
|
|
lc->supported = bi->caps;
|
|
lc->requested_speed = lc->speed = SPEED_INVALID;
|
|
lc->requested_duplex = lc->duplex = DUPLEX_INVALID;
|
|
lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
|
|
if (lc->supported & SUPPORTED_Autoneg) {
|
|
lc->advertising = lc->supported;
|
|
lc->autoneg = AUTONEG_ENABLE;
|
|
lc->requested_fc |= PAUSE_AUTONEG;
|
|
} else {
|
|
lc->advertising = 0;
|
|
lc->autoneg = AUTONEG_DISABLE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate and initialize the data structures that hold the SW state of
|
|
* the Terminator HW modules.
|
|
*/
|
|
int __devinit t1_init_sw_modules(adapter_t *adapter,
|
|
const struct board_info *bi)
|
|
{
|
|
unsigned int i;
|
|
|
|
adapter->params.brd_info = bi;
|
|
adapter->params.nports = bi->port_number;
|
|
adapter->params.stats_update_period = bi->gmac->stats_update_period;
|
|
|
|
adapter->sge = t1_sge_create(adapter, &adapter->params.sge);
|
|
if (!adapter->sge) {
|
|
pr_err("%s: SGE initialization failed\n",
|
|
adapter->name);
|
|
goto error;
|
|
}
|
|
|
|
if (bi->espi_nports && !(adapter->espi = t1_espi_create(adapter))) {
|
|
pr_err("%s: ESPI initialization failed\n",
|
|
adapter->name);
|
|
goto error;
|
|
}
|
|
|
|
adapter->tp = t1_tp_create(adapter, &adapter->params.tp);
|
|
if (!adapter->tp) {
|
|
pr_err("%s: TP initialization failed\n",
|
|
adapter->name);
|
|
goto error;
|
|
}
|
|
|
|
board_init(adapter, bi);
|
|
bi->mdio_ops->init(adapter, bi);
|
|
if (bi->gphy->reset)
|
|
bi->gphy->reset(adapter);
|
|
if (bi->gmac->reset)
|
|
bi->gmac->reset(adapter);
|
|
|
|
for_each_port(adapter, i) {
|
|
u8 hw_addr[6];
|
|
struct cmac *mac;
|
|
int phy_addr = bi->mdio_phybaseaddr + i;
|
|
|
|
adapter->port[i].phy = bi->gphy->create(adapter->port[i].dev,
|
|
phy_addr, bi->mdio_ops);
|
|
if (!adapter->port[i].phy) {
|
|
pr_err("%s: PHY %d initialization failed\n",
|
|
adapter->name, i);
|
|
goto error;
|
|
}
|
|
|
|
adapter->port[i].mac = mac = bi->gmac->create(adapter, i);
|
|
if (!mac) {
|
|
pr_err("%s: MAC %d initialization failed\n",
|
|
adapter->name, i);
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Get the port's MAC addresses either from the EEPROM if one
|
|
* exists or the one hardcoded in the MAC.
|
|
*/
|
|
if (!t1_is_asic(adapter) || bi->chip_mac == CHBT_MAC_DUMMY)
|
|
mac->ops->macaddress_get(mac, hw_addr);
|
|
else if (vpd_macaddress_get(adapter, i, hw_addr)) {
|
|
pr_err("%s: could not read MAC address from VPD ROM\n",
|
|
adapter->port[i].dev->name);
|
|
goto error;
|
|
}
|
|
memcpy(adapter->port[i].dev->dev_addr, hw_addr, ETH_ALEN);
|
|
init_link_config(&adapter->port[i].link_config, bi);
|
|
}
|
|
|
|
get_pci_mode(adapter, &adapter->params.pci);
|
|
t1_interrupts_clear(adapter);
|
|
return 0;
|
|
|
|
error:
|
|
t1_free_sw_modules(adapter);
|
|
return -1;
|
|
}
|