5a0e3ad6af
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
181 lines
6 KiB
C
181 lines
6 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/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_rx.h"
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#include "et131x_adapter.h"
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#include "et131x.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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