--- /dev/null
+/*
+ * 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 \93AS IS\94 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 <asm/io.h>
+#include <asm/system.h>
+#include <asm/bitops.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
+ * @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);
+}
+
projects / people / pmueller / ipfire-2.x.git / blobdiff