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* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-053-9/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* fix file specification in commentsUwe Zeisberger2006-10-032-2/+2
| | | | | | | Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Merge branch 'upstream-linus' of ↵Linus Torvalds2006-09-241-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (217 commits) net/ieee80211: fix more crypto-related build breakage [PATCH] Spidernet: add ethtool -S (show statistics) [NET] GT96100: Delete bitrotting ethernet driver [PATCH] mv643xx_eth: restrict to 32-bit PPC_MULTIPLATFORM [PATCH] Cirrus Logic ep93xx ethernet driver r8169: the MMIO region of the 8167 stands behin BAR#1 e1000, ixgb: Remove pointless wrappers [PATCH] Remove powerpc specific parts of 3c509 driver [PATCH] s2io: Switch to pci_get_device [PATCH] gt96100: move to pci_get_device API [PATCH] ehea: bugfix for register access functions [PATCH] e1000 disable device on PCI error drivers/net/phy/fixed: #if 0 some incomplete code drivers/net: const-ify ethtool_ops declarations [PATCH] ethtool: allow const ethtool_ops [PATCH] sky2: big endian [PATCH] sky2: fiber support [PATCH] sky2: tx pause bug fix drivers/net: Trim trailing whitespace [PATCH] ehea: IBM eHEA Ethernet Device Driver ... Manually resolved conflicts in drivers/net/ixgb/ixgb_main.c and drivers/net/sky2.c related to CHECKSUM_HW/CHECKSUM_PARTIAL changes by commit 84fa7933a33f806bbbaae6775e87459b1ec584c0 that just happened to be next to unrelated changes in this update.
| * drivers/net: const-ify ethtool_ops declarationsJeff Garzik2006-09-131-1/+1
| | | | | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETEPatrick McHardy2006-09-221-1/+1
|/ | | | | | | | | | | Replace CHECKSUM_HW by CHECKSUM_PARTIAL (for outgoing packets, whose checksum still needs to be completed) and CHECKSUM_COMPLETE (for incoming packets, device supplied full checksum). Patch originally from Herbert Xu, updated by myself for 2.6.18-rc3. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-3014-14/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] ibm_emac sparse annotationsAl Viro2006-01-286-29/+26
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] PPC44x EMAC driver: disable TX status deferral in half-duplex modeEugene Surovegin2006-01-092-2/+3
| | | | | | | | | | | | | | Disable TX status deferral (EMACx_MR[MWSW=001]) in half-duplex mode. I have two reports when EMAC stops transmitting when connected to a hub. TX ring debug printouts show complete mess when this happens, probably hardware collision handling doesn't work quite well in this mode. This is relevant only for SoCs with EMAC4 core (440GX, 440SP, 440SPe). Tested on 440GX. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] ibm_emac: fix graceful stop timeout handlingEugene Surovegin2005-12-012-9/+31
| | | | | | | | | | | | | | | | | This patch fixes graceful stop timeout handling in PPC4xx EMAC driver. Currently, when we stop TX/RX channels we just do some number of loops without relying on actual spent time. This has finally bitten me on one of our systems (heavy network traffic during start up, RX channel is stopped several times to configure multicast list). Graceful channel stop can take up to 1 frame time, so I've added device specific timeout counter which depends on current link speed and calls to udelay() to really wait required amount of time before giving up. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] PPC 4xx EMAC driver: fix VSC8201 PHY initializationEugene Surovegin2005-10-291-0/+12
| | | | | | | | * MII registers must override strap pins * disable "echo" mode to make 10/HDX work (Franz Sirl) Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] PPC 44x EMAC driver: add 440GR supportEugene Surovegin2005-10-293-5/+7
| | | | | | | | Add PowerPC 440GR support Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] PPC 44x EMAC driver: add 440SPe supportEugene Surovegin2005-10-293-8/+29
| | | | | | | | | | | For some reason, the hardware designers made the polarity of one bit in the 440SPe's PHY interface register the opposite of all other PPC 440 chips. To handle this, abstract our access to this bit and do the right thing based on the configured CPU type. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] New PowerPC 4xx on-chip ethernet controller driverEugene Surovegin2005-10-2816-2801/+4028
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch replaces current PowerPC 4xx EMAC driver with new, re-written from the scratch version. This patch is quite big (~234K) because there is virtualy 0% of common code between old and new version. New driver uses NAPI, it solves stability problems under heavy packet load and low memory, corrects chip register access and fixes numerous small bugs I don't even remember now. This patch has been tested on all supported in 2.6 PPC 4xx boards. It's been used in production for almost a year now on custom 4xx hardware. PPC32 specific parts are already upstream. Patch was acked by the current EMAC driver maintainer (Matt Porter). I will be maintaining this new version. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> -- Kconfig | 72 ibm_emac/Makefile | 13 ibm_emac/ibm_emac.h | 418 +++-- ibm_emac/ibm_emac_core.c | 3414 ++++++++++++++++++++++++---------------------- ibm_emac/ibm_emac_core.h | 313 ++-- ibm_emac/ibm_emac_debug.c | 377 ++--- ibm_emac/ibm_emac_debug.h | 63 ibm_emac/ibm_emac_mal.c | 674 +++++---- ibm_emac/ibm_emac_mal.h | 336 +++- ibm_emac/ibm_emac_phy.c | 335 ++-- ibm_emac/ibm_emac_phy.h | 105 - ibm_emac/ibm_emac_rgmii.c | 201 ++ ibm_emac/ibm_emac_rgmii.h | 68 ibm_emac/ibm_emac_tah.c | 111 + ibm_emac/ibm_emac_tah.h | 96 - ibm_emac/ibm_emac_zmii.c | 255 +++ ibm_emac/ibm_emac_zmii.h | 114 - 17 files changed, 4114 insertions(+), 2851 deletions(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] emac: add support for platform-specific unsupported PHY featuresWade Farnsworth2005-10-031-0/+31
| | | | | | | | | | | This patch adds support to the ibm_emac driver for platform-specific unsupported PHY features. The patch attempts to determine the highest speed and duplex when autonegotiation is unsupported. Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] bogus iounmap() in emacAl Viro2005-08-261-1/+1
| | | | | | | Dumb typo: iounmap(&local_pointer_variable). Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] emac netpoll fixAl Viro2005-08-231-2/+1
| | | | | | | netpoll is void(struct net_device *), not int(struct net_device *) Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] {PATCH] Fix IBM EMAC driver ioctl bugGeoff Levand2005-05-151-1/+1
| | | | | | | | | | | | | | | | | | | | | Fix IBM EMAC driver ioctl bug. I found IBM EMAC driver bug. So mii-tool command print wrong status. # mii-tool eth0: 10 Mbit, half duplex, no link eth1: 10 Mbit, half duplex, no link I can get correct status on fixed kernel. # mii-tool eth0: negotiated 100baseTx-FD, link okZZ eth1: negotiated 100baseTx-FD, link ok Hiroaki Fuse Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> for CELF
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-1612-0/+3896
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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