Commit Graph

63 Commits

Author SHA1 Message Date
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
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)
2006-10-05 15:10:12 +01:00
Vasily Averin 793fab7273 e1000: possible memory leak in e1000_set_ringparam
Memory allocated for new tx_ring and rx_ring leaks if
e1000_setup_XX_resources() fails.c Also this patch reduces stack usage
(removed tx_new and rx_new) and uses kzalloc instead kmalloc+memset(0)

Signed-off-by: Vasily Averin <vvs@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:54:14 -07:00
Auke Kok 1314bbf3a3 e1000: driver state fixes (race fix)
We were plagued by our interrupt handler posting a watchdog event which
could occur when our adapter was going down in case a late packet arrived
just before e1000_down() finished. This caused the watchdog timer to start
after the NIC was down and keep rescheduling it every N seconds. Once
the driver unloaded it would panic.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:54:02 -07:00
Jeff Kirsher 2f2ca2638c e1000: allow ethtool to pass arbitrary speed advertisment
With a patch, ethtool can now signify the driver to advertise more
than just a single speed/duplex setting. This allows you to tell the
card to advertise in 10/100 in any speed if you don't have a gigabit
switch for instance.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:53:40 -07:00
Mitch Williams 49559854c9 e1000: add multicast stats counters
Add 4 multicast and broadcast hardware counters (rx/tx), and eliminate
as many non-hardware counters as possible.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:53:37 -07:00
Nicholas Nunley 35574764c7 e1000: remove unused code and make symbols static
Signed-off-by: Nicholas Nunley <nicholas.d.nunley@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:53:34 -07:00
Jeff Kirsher 11241b1069 e1000: rename flow control symbols
Sogned-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:53:28 -07:00
Auke Kok 0abb6eb128 e100, e1000, ixgb: update copyright header and remove LICENSE
This update to the copyright header adds the mailinglist, and aligns it
with the kernel licensing as well as remove the offending 'all rights
reserved'.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:53:14 -07:00
Jeff Garzik f8ec473387 e1000, ixgb: Remove pointless wrappers
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-19 15:27:07 -04:00
Jeff Garzik 7282d491ec drivers/net: const-ify ethtool_ops declarations
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-13 14:30:00 -04:00
Jesse Brandeburg 5881cde8a3 e1000: Add PCI ID 0x10a4 for our new 4-port PCI-Express device
Device 0x10a4 is a double 82571 on a single PCI-Express card and
has 4 gigabit capable ports.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-31 14:27:47 -07:00
Jesse Brandeburg 120cd57644 e1000: unify WoL capability detection code
WoL is constantly giving problems and needed a rewrite. Consolidates
all WoL capabilities into a single function, and disables WoL for all
other ports on the device except for port A.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-31 14:27:46 -07:00
Auke Kok 8fc897b00a e1000: Whitespace cleanup, cosmetic changes
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-28 14:56:16 -07:00
Jesse Brandeburg 1a821ca595 e1000: explicit locking for two ethtool path functions
Explicitly lock two more ethtool entry points completely instead
of the hardware reset only to prevent a race condition.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-16 13:38:46 -07:00
Jesse Brandeburg d658266ed6 e1000: Explicitly power up the PHY during loopback testing.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-16 13:31:33 -07:00
Jeff Garzik c0bc8721b8 Merge branch 'upstream' of git://lost.foo-projects.org/~ahkok/git/netdev-2.6 into upstream
Conflicts:

	drivers/net/e1000/e1000_main.c
2006-07-05 14:32:39 -04:00
Thomas Gleixner 1fb9df5d30 [PATCH] irq-flags: drivers/net: Use the new IRQF_ constants
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:51 -07:00
Auke Kok cd94dd0b64 e1000: integrate ich8 support into driver
This hooks up the ich8 structure into the driver itself.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-06-27 09:08:22 -07:00
Auke Kok f1b3a85354 e1000: fix adapter led blinking inconsistency
Several e1000 adapters were not blinking correctly or inconsistently. This
patch cleans this up and makes them all behave the same as far as possible.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-06-27 09:07:56 -07:00
Auke Kok 2db10a081c e1000: rework driver hardware reset locking
After studying the driver mac reset code it was found that there
were multiple race conditions possible to reset the unit twice or
bring it e1000_up() double. This fixes all occurences where the
driver needs to reset the mac.

We also remove irq requesting/releasing into _open and _close so
that while the device is _up we will never touch the irq's. This fixes
the double free irq bug that people saw.

To make sure that the watchdog task doesn't cause another race we let
it run as a non-scheduled task.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-06-27 09:06:28 -07:00
Auke Kok acfbc9fde2 e1000: fix loopback ethtool test
Ethtool was reporting that loopback failed randomly on esb2
systems. Upon study it was found that the phy manual was changed
with respect to the loopback mode bits. The new value fixes it.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-06-27 09:06:24 -07:00
Jeff Garzik bcd618e4ea Merge branch 'upstream-fixes' into upstream
Conflicts:

	drivers/net/e1000/e1000_ethtool.c
2006-06-08 15:55:45 -04:00
Auke Kok b9b6e78b11 e1000: fix ethtool test irq alloc as "probe"
New code added in 2.6.17 caused setup_irq to print a warning when
running ethtool -t eth0 offline.

This test marks the request_irq call made by this test as a "probe"
to see if the interrupt is shared or not.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-06-08 09:28:38 -07:00
Auke Kok 76c224bc9f e1000: remove leading and trailing whitespace.
Some leading and trailing whitespace made it into the driver code here.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-05-23 13:36:06 -07:00
Auke Kok 3d41e30aa3 e1000: Version bump, contact fix, year string change
Add the sourceforge project mailinglist to the contact information.

Bump version to 7.0.38-k2

Update copyright string with the new year.


Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-04-14 19:05:31 -07:00
Adrian Bunk 30dcbf29cc [PATCH] drivers/net/e1000/: proper prototypes
This patch moves prototypes of global variables and functions to a header
file.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: John Ronciak <john.ronciak@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 21:49:49 -05:00
Jeff Kirsher 8704163987 e1000: Fixed the following issues with ESB2 (requires ESB2 support):
- Add restriction for ESB2 to MTU size <=9216
- Removed FIFO errors which were not being used
- Fixed issues with loopback
- Power management change for saving state and config space
- WA to disable recieves and reset device on link loss.  Reset needed to be done outside the interrupt context - modified existing tx_timeout_task

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02 18:21:24 -08:00
Jeff Kirsher 6418ecc68e e1000: Add support for new hardware (ESB2)
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02 18:21:10 -08:00
Jeff Kirsher 7e6c9861bb e1000: Fix network problems when forced at 100Mb/s and to fix TSO when forced at 100Mb/s
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02 18:19:30 -08:00
Jeff Kirsher 8491682986 e1000: Fix Quadport Wake on LAN
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02 18:18:48 -08:00
Jeff Kirsher 0989aa4316 e1000: Fix lock up while setting ring parameters
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02 18:17:16 -08:00
Jeff Kirsher 9f644d518f e1000: Fix dead counters
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02 18:16:59 -08:00
Jeff Kirsher c1605eb37a e1000: Remove Multiqueue code until we have support for MSI-X in our hardware
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02 18:16:38 -08:00
Jesse Brandeburg 96838a40f0 [PATCH] e1000: Fix whitespace
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-18 16:17:58 -05:00
Jeff Kirsher a2917e22dc [PATCH] e1000: Added firmware version reporting for 8257{1|2|3} controllers
The EEPROM image version is reported as a firmware version for these controllers.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:48:04 -05:00
Jeff Kirsher b7ee49db8b [PATCH] e1000: Added hardware support for PCI express, 82546GB, and 82571 Fiber
Added 82571 fiber to WOL fix for dual port adapters.
Added support for 82546GB (Quad Copper).
Added PCIe typedef for x2, igp cable length 115, and extended TX CTRL registers.
Added parity error detection and PCIe CTRL registers.
Added EEPROM config registers.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:48:04 -05:00
Jeff Kirsher ce7393b935 [PATCH] e1000: Fixed frame size logic
Simplified the logic used to assign the frame_size.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:48:03 -05:00
Jeff Kirsher f5645110aa [PATCH] e1000: Fix desc. clean up
These were two separate community submitted patches.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:44:51 -05:00
Jeff Kirsher 492731632c [PATCH] e1000: Fix loopback logic
Fixed the loopback logic to work for the PCI express adapters.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:44:49 -05:00
Jeff Kirsher 7bfa48162d [PATCH] e1000: Fix mulitple queues
Fixed stats when using multiple queues.
When multiple queues are enabled, log a message in syslog.
Fixed memory allocation for multiple queues.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:40:11 -05:00
Jeff Kirsher f56799ea39 [PATCH] e1000: Fix adapter structure and prepare for multique fix
Fix adapter structure to handle multiple queues and prepping the driver for full multiple queue support, some changes are ifdef'd our unless you define CONFIG_E1000_MQ.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:40:11 -05:00
Jeff Kirsher d8c2bd3d3a [PATCH] e1000: Fix LED functionality for 82573
Fixed adapter identification issue.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:40:11 -05:00
Jeff Kirsher 6b7660cd4d [PATCH] Fix e1000 stats
Updated the e1000_stats structure and removed mpx for rx_errors and rx_dropped.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:40:11 -05:00
Jeff Kirsher 571281972e [PATCH] e1000: Fix SoL/IDER link and loopback
Fix so that if a SoL/IDER session is active, do not allow operations which require a PHY reset and instead log a message.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17 07:40:10 -05:00
Jeff Kirsher fd80324174 e1000: Fixes for 8357x
- TSO workaround
- Fixes eeprom version reporting
- Fix loopback test
- Fix for WOL

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
2005-12-13 00:06:22 -05:00
John W. Linville 6b27adb607 [PATCH] e1000: zero-out pointers in e1000_free_desc_rings
In e1000_free_desc_rings, zero-out pointers after the memory they
point to is freed.  The test rings are static and get re-used, and
failures during subsequent test setups can cause e1000_free_desc_rings
to get called with dirty pointers.  Dirty pointers can cause oopses
or crashes...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2005-11-18 13:52:39 -05:00
John W. Linville e98fc4aae1 [PATCH] e1000: avoid leak when e1000_setup_loopback_test fails
In e1000_loopback_test, make sure to call e1000_free_desc_rings if
e1000_setup_loopback_test fails.  Currently in that case it will not
get called, causing a leak.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2005-11-18 13:52:39 -05:00
Adrian Bunk 3ad2cc6798 [PATCH] drivers/net/e1000/: possible cleanups
This patch contains the following possible cleanups:
- make needlessly global code static
- #if 0 the following unused global functions:
  - e1000_hw.c: e1000_mc_addr_list_update
  - e1000_hw.c: e1000_read_reg_io
  - e1000_hw.c: e1000_enable_pciex_master

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2005-11-05 21:00:01 -05:00
Jesper Juhl b4558ea93d drivers/net: Remove pointless checks for NULL prior to calling kfree() 2005-10-28 16:53:13 -04:00
Mallikarjuna R Chilakala a7990ba60a e1000: Flush shadow RAM
Flush shadow RAM to save updates to ASF related bits for 82573 controllers.
These bits are past the first 63 words of NVM.

Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-04 07:08:19 -04:00