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![Alan Cox](/assets/img/avatar_default.png)
We don't need it, we have a perfectly good set of debug tools. For this pass keep a few debug printks around which are "should not happen" items Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
185 lines
6.1 KiB
C
185 lines
6.1 KiB
C
/*
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* Agere Systems Inc.
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* 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
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*
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* Copyright © 2005 Agere Systems Inc.
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* All rights reserved.
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* http://www.agere.com
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*
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*------------------------------------------------------------------------------
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*
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* et1310_pm.c - All power management related code (not completely implemented)
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*
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*------------------------------------------------------------------------------
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*
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* SOFTWARE LICENSE
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*
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* This software is provided subject to the following terms and conditions,
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* which you should read carefully before using the software. Using this
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* software indicates your acceptance of these terms and conditions. If you do
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* not agree with these terms and conditions, do not use the software.
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*
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* Copyright © 2005 Agere Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source or binary forms, with or without
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* modifications, are permitted provided that the following conditions are met:
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*
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* . Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following Disclaimer as comments in the code as
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* well as in the documentation and/or other materials provided with the
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* distribution.
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*
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* . Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following Disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* . Neither the name of Agere Systems Inc. nor the names of the contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* Disclaimer
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
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* USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
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* RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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*/
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#include "et131x_version.h"
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#include "et131x_defs.h"
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/ctype.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/in.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/bitops.h>
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#include <asm/system.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/if_arp.h>
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#include <linux/ioport.h>
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#include "et1310_phy.h"
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#include "et1310_pm.h"
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#include "et1310_jagcore.h"
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#include "et1310_mac.h"
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#include "et1310_rx.h"
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#include "et131x_adapter.h"
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#include "et131x_initpci.h"
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/**
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* EnablePhyComa - called when network cable is unplugged
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* @etdev: pointer to our adapter structure
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*
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* driver receive an phy status change interrupt while in D0 and check that
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* phy_status is down.
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*
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* -- gate off JAGCore;
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* -- set gigE PHY in Coma mode
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* -- wake on phy_interrupt; Perform software reset JAGCore,
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* re-initialize jagcore and gigE PHY
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*
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* Add D0-ASPM-PhyLinkDown Support:
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* -- while in D0, when there is a phy_interrupt indicating phy link
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* down status, call the MPSetPhyComa routine to enter this active
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* state power saving mode
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* -- while in D0-ASPM-PhyLinkDown mode, when there is a phy_interrupt
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* indicating linkup status, call the MPDisablePhyComa routine to
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* restore JAGCore and gigE PHY
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*/
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void EnablePhyComa(struct et131x_adapter *etdev)
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{
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unsigned long flags;
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u32 GlobalPmCSR;
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GlobalPmCSR = readl(&etdev->regs->global.pm_csr);
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/* Save the GbE PHY speed and duplex modes. Need to restore this
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* when cable is plugged back in
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*/
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etdev->PoMgmt.PowerDownSpeed = etdev->AiForceSpeed;
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etdev->PoMgmt.PowerDownDuplex = etdev->AiForceDpx;
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/* Stop sending packets. */
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spin_lock_irqsave(&etdev->SendHWLock, flags);
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etdev->Flags |= fMP_ADAPTER_LOWER_POWER;
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spin_unlock_irqrestore(&etdev->SendHWLock, flags);
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/* Wait for outstanding Receive packets */
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/* Gate off JAGCore 3 clock domains */
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GlobalPmCSR &= ~ET_PMCSR_INIT;
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writel(GlobalPmCSR, &etdev->regs->global.pm_csr);
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/* Program gigE PHY in to Coma mode */
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GlobalPmCSR |= ET_PM_PHY_SW_COMA;
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writel(GlobalPmCSR, &etdev->regs->global.pm_csr);
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}
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/**
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* DisablePhyComa - Disable the Phy Coma Mode
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* @etdev: pointer to our adapter structure
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*/
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void DisablePhyComa(struct et131x_adapter *etdev)
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{
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u32 GlobalPmCSR;
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GlobalPmCSR = readl(&etdev->regs->global.pm_csr);
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/* Disable phy_sw_coma register and re-enable JAGCore clocks */
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GlobalPmCSR |= ET_PMCSR_INIT;
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GlobalPmCSR &= ~ET_PM_PHY_SW_COMA;
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writel(GlobalPmCSR, &etdev->regs->global.pm_csr);
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/* Restore the GbE PHY speed and duplex modes;
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* Reset JAGCore; re-configure and initialize JAGCore and gigE PHY
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*/
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etdev->AiForceSpeed = etdev->PoMgmt.PowerDownSpeed;
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etdev->AiForceDpx = etdev->PoMgmt.PowerDownDuplex;
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/* Re-initialize the send structures */
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et131x_init_send(etdev);
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/* Reset the RFD list and re-start RU */
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et131x_reset_recv(etdev);
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/* Bring the device back to the state it was during init prior to
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* autonegotiation being complete. This way, when we get the auto-neg
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* complete interrupt, we can complete init by calling ConfigMacREGS2.
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*/
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et131x_soft_reset(etdev);
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/* setup et1310 as per the documentation ?? */
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et131x_adapter_setup(etdev);
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/* Allow Tx to restart */
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etdev->Flags &= ~fMP_ADAPTER_LOWER_POWER;
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/* Need to re-enable Rx. */
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et131x_rx_dma_enable(etdev);
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}
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