| /* |
| * Agere Systems Inc. |
| * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs |
| * |
| * Copyright © 2005 Agere Systems Inc. |
| * All rights reserved. |
| * http://www.agere.com |
| * |
| *------------------------------------------------------------------------------ |
| * |
| * et1310_pm.c - All power management related code (not completely implemented) |
| * |
| *------------------------------------------------------------------------------ |
| * |
| * SOFTWARE LICENSE |
| * |
| * This software is provided subject to the following terms and conditions, |
| * which you should read carefully before using the software. Using this |
| * software indicates your acceptance of these terms and conditions. If you do |
| * not agree with these terms and conditions, do not use the software. |
| * |
| * Copyright © 2005 Agere Systems Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source or binary forms, with or without |
| * modifications, are permitted provided that the following conditions are met: |
| * |
| * . Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following Disclaimer as comments in the code as |
| * well as in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * . Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following Disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * . Neither the name of Agere Systems Inc. nor the names of the contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * Disclaimer |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY |
| * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN |
| * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| */ |
| |
| #include "et131x_version.h" |
| #include "et131x_debug.h" |
| #include "et131x_defs.h" |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/kernel.h> |
| |
| #include <linux/sched.h> |
| #include <linux/ptrace.h> |
| #include <linux/slab.h> |
| #include <linux/ctype.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <linux/interrupt.h> |
| #include <linux/in.h> |
| #include <linux/delay.h> |
| #include <linux/io.h> |
| #include <linux/bitops.h> |
| #include <asm/system.h> |
| |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/if_arp.h> |
| #include <linux/ioport.h> |
| |
| #include "et1310_phy.h" |
| #include "et1310_pm.h" |
| #include "et1310_jagcore.h" |
| #include "et1310_mac.h" |
| #include "et1310_rx.h" |
| |
| #include "et131x_adapter.h" |
| #include "et131x_initpci.h" |
| |
| /* Data for debugging facilities */ |
| #ifdef CONFIG_ET131X_DEBUG |
| extern dbg_info_t *et131x_dbginfo; |
| #endif /* CONFIG_ET131X_DEBUG */ |
| |
| /** |
| * EnablePhyComa - called when network cable is unplugged |
| * @etdev: pointer to our adapter structure |
| * |
| * driver receive an phy status change interrupt while in D0 and check that |
| * phy_status is down. |
| * |
| * -- gate off JAGCore; |
| * -- set gigE PHY in Coma mode |
| * -- wake on phy_interrupt; Perform software reset JAGCore, |
| * re-initialize jagcore and gigE PHY |
| * |
| * Add D0-ASPM-PhyLinkDown Support: |
| * -- while in D0, when there is a phy_interrupt indicating phy link |
| * down status, call the MPSetPhyComa routine to enter this active |
| * state power saving mode |
| * -- while in D0-ASPM-PhyLinkDown mode, when there is a phy_interrupt |
| * indicating linkup status, call the MPDisablePhyComa routine to |
| * restore JAGCore and gigE PHY |
| */ |
| void EnablePhyComa(struct et131x_adapter *etdev) |
| { |
| unsigned long flags; |
| PM_CSR_t GlobalPmCSR; |
| int32_t LoopCounter = 10; |
| |
| DBG_ENTER(et131x_dbginfo); |
| |
| GlobalPmCSR.value = readl(&etdev->regs->global.pm_csr.value); |
| |
| /* Save the GbE PHY speed and duplex modes. Need to restore this |
| * when cable is plugged back in |
| */ |
| etdev->PoMgmt.PowerDownSpeed = etdev->AiForceSpeed; |
| etdev->PoMgmt.PowerDownDuplex = etdev->AiForceDpx; |
| |
| /* Stop sending packets. */ |
| spin_lock_irqsave(&etdev->SendHWLock, flags); |
| MP_SET_FLAG(etdev, fMP_ADAPTER_LOWER_POWER); |
| spin_unlock_irqrestore(&etdev->SendHWLock, flags); |
| |
| /* Wait for outstanding Receive packets */ |
| |
| /* Gate off JAGCore 3 clock domains */ |
| GlobalPmCSR.bits.pm_sysclk_gate = 0; |
| GlobalPmCSR.bits.pm_txclk_gate = 0; |
| GlobalPmCSR.bits.pm_rxclk_gate = 0; |
| writel(GlobalPmCSR.value, &etdev->regs->global.pm_csr.value); |
| |
| /* Program gigE PHY in to Coma mode */ |
| GlobalPmCSR.bits.pm_phy_sw_coma = 1; |
| writel(GlobalPmCSR.value, &etdev->regs->global.pm_csr.value); |
| |
| DBG_LEAVE(et131x_dbginfo); |
| } |
| |
| /** |
| * DisablePhyComa - Disable the Phy Coma Mode |
| * @etdev: pointer to our adapter structure |
| */ |
| void DisablePhyComa(struct et131x_adapter *etdev) |
| { |
| PM_CSR_t GlobalPmCSR; |
| |
| DBG_ENTER(et131x_dbginfo); |
| |
| GlobalPmCSR.value = readl(&etdev->regs->global.pm_csr.value); |
| |
| /* Disable phy_sw_coma register and re-enable JAGCore clocks */ |
| GlobalPmCSR.bits.pm_sysclk_gate = 1; |
| GlobalPmCSR.bits.pm_txclk_gate = 1; |
| GlobalPmCSR.bits.pm_rxclk_gate = 1; |
| GlobalPmCSR.bits.pm_phy_sw_coma = 0; |
| writel(GlobalPmCSR.value, &etdev->regs->global.pm_csr.value); |
| |
| /* Restore the GbE PHY speed and duplex modes; |
| * Reset JAGCore; re-configure and initialize JAGCore and gigE PHY |
| */ |
| etdev->AiForceSpeed = etdev->PoMgmt.PowerDownSpeed; |
| etdev->AiForceDpx = etdev->PoMgmt.PowerDownDuplex; |
| |
| /* Re-initialize the send structures */ |
| et131x_init_send(etdev); |
| |
| /* Reset the RFD list and re-start RU */ |
| et131x_reset_recv(etdev); |
| |
| /* Bring the device back to the state it was during init prior to |
| * autonegotiation being complete. This way, when we get the auto-neg |
| * complete interrupt, we can complete init by calling ConfigMacREGS2. |
| */ |
| et131x_soft_reset(etdev); |
| |
| /* setup et1310 as per the documentation ?? */ |
| et131x_adapter_setup(etdev); |
| |
| /* Allow Tx to restart */ |
| MP_CLEAR_FLAG(etdev, fMP_ADAPTER_LOWER_POWER); |
| |
| /* Need to re-enable Rx. */ |
| et131x_rx_dma_enable(etdev); |
| |
| DBG_LEAVE(et131x_dbginfo); |
| } |
| |