/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 * @pAdapter: 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 *pAdapter) { unsigned long lockflags; PM_CSR_t GlobalPmCSR; int32_t LoopCounter = 10; DBG_ENTER(et131x_dbginfo); GlobalPmCSR.value = readl(&pAdapter->CSRAddress->global.pm_csr.value); /* Save the GbE PHY speed and duplex modes. Need to restore this * when cable is plugged back in */ pAdapter->PoMgmt.PowerDownSpeed = pAdapter->AiForceSpeed; pAdapter->PoMgmt.PowerDownDuplex = pAdapter->AiForceDpx; /* Stop sending packets. */ spin_lock_irqsave(&pAdapter->SendHWLock, lockflags); MP_SET_FLAG(pAdapter, fMP_ADAPTER_LOWER_POWER); spin_unlock_irqrestore(&pAdapter->SendHWLock, lockflags); /* Wait for outstanding Receive packets */ while ((MP_GET_RCV_REF(pAdapter) != 0) && (LoopCounter-- > 0)) { mdelay(2); } /* 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, &pAdapter->CSRAddress->global.pm_csr.value); /* Program gigE PHY in to Coma mode */ GlobalPmCSR.bits.pm_phy_sw_coma = 1; writel(GlobalPmCSR.value, &pAdapter->CSRAddress->global.pm_csr.value); DBG_LEAVE(et131x_dbginfo); } /** * DisablePhyComa - Disable the Phy Coma Mode * @pAdapter: pointer to our adapter structure */ void DisablePhyComa(struct et131x_adapter *pAdapter) { PM_CSR_t GlobalPmCSR; DBG_ENTER(et131x_dbginfo); GlobalPmCSR.value = readl(&pAdapter->CSRAddress->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, &pAdapter->CSRAddress->global.pm_csr.value); /* Restore the GbE PHY speed and duplex modes; * Reset JAGCore; re-configure and initialize JAGCore and gigE PHY */ pAdapter->AiForceSpeed = pAdapter->PoMgmt.PowerDownSpeed; pAdapter->AiForceDpx = pAdapter->PoMgmt.PowerDownDuplex; /* Re-initialize the send structures */ et131x_init_send(pAdapter); /* Reset the RFD list and re-start RU */ et131x_reset_recv(pAdapter); /* 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(pAdapter); /* setup et1310 as per the documentation ?? */ et131x_adapter_setup(pAdapter); /* Allow Tx to restart */ MP_CLEAR_FLAG(pAdapter, fMP_ADAPTER_LOWER_POWER); /* Need to re-enable Rx. */ et131x_rx_dma_enable(pAdapter); DBG_LEAVE(et131x_dbginfo); }