rtl_hw_start_8168 inherits the content of rtl_hw_start_8169 minus
the code which depends on RTL_GIGA_MAC_VER_XY (XY != {11/12}).
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
They aim to limit the amount of moved code when the hw_start
handler gets more specialized.
No functional change.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
Rationale: rtl8169_hw_start will not help maintaining an unified
driver for different chipsets but people at Realtek are probably
too polite to say it distinctly.
Let's add the hook and keep hw_start handler unchanged.
As can be seen from the content of rtl8169_pci_tbl, the RTL_CFG_1
entry in rtl_cfg_info was unused. I recycled it for the 0x8168.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
- pci_dma_sync_single_for_cpu is not needed for a single large packet
- remove the function pointer to help gcc optimizing the inline
pci_dma functions.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
It hasn't "summed" anything in over 7 years, and it's
just a straight mempcy ala skb_copy_to_linear_data()
so just get rid of it.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
The former style suggests a modulo arithmetic misuse but
the expression should never be < 0. Even if it does, the
driver will simply loop longer than expected (not that
the remaining parts of the system will necessarily
appreciate it...).
Let's warn the user when something goes wrong and try
to go over it.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
Use netdev_alloc_skb and remove the useless sk_buff * argument of
rtl8169_alloc_rx_skb.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
Many drivers had code that did kill_vid, but they weren't doing vlan
filtering. With new API the stub is unneeded unless device sets
NETIF_F_HW_VLAN_FILTER.
Bad habit: I couldn't resist fixing a couple of nearby style things
in acenic, and forcedeth.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
One less thing for drivers writers to worry about.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The PM hooks are no-op if the r8169 interface is down (i.e. !IFF_UP).
However, as the chipset is enabled, the device will not work after a
suspend/resume cycle. The patch always issue the required PCI suspend
sequence and removes the module unload/reload workaround.
Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The irq handler schedules a NAPI poll request unconditionally as soon as
the status register is not clean. It has been there - and wrong - for
ages but a recent timing change made it apparently easier to trigger.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Initialize the timer with the rest of the private-struct.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Added during bf793295e1
The current code requests a reset but prohibits autoneg, 1000 Mb/s,
100 Mb/s and full duplex. The 8168 does not like it at all.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch splits the vlan_group struct into a multi-allocated struct. On
x86_64, the size of the original struct is a little more than 32KB, causing
a 4-order allocation, which is prune to problems caused by buddy-system
external fragmentation conditions.
I couldn't just use vmalloc() because vfree() cannot be called in the
softirq context of the RCU callback.
Signed-off-by: Dan Aloni <da-x@monatomic.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
flush_scheduled_work() in net_device->close has a slight tendency
to deadlock with tasks on the workqueue that hold RTNL.
rtl8169_close/down simply need the recovery tasks to not meddle
with the hardware while the device is going down.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Checked in Realtek's driver, this one has no business being there.
The driver still works but there is a noticeable performance drop.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
The former option is removed and platform code can now specify the
expected behavior.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Two thirds of packets are lost because of misalignment. Users of
Asus laptop did apparently not notice it.
Reported on Gigabyte GA-945GM-S2.
Fix for http://bugzilla.kernel.org/show_bug.cgi?id=7517
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
The 8110SB based n2100 board signals a lot of what ought to be
PCI data parity errors durint operation of the 8169 as target.
Experiment proved that the driver can ignore the error and
process the packet as if nothing had happened.
Let's add an ad-hoc knob to enable users to fix their system while
avoiding the risks of a wholesale change.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Mostly taken from Realtek's driver.
It's a bit yucky but the original is even worse.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
Realtek's 8139/810x (0x8136) PCI-E comes with a touchy PHY.
A big heavy reset seems to calm it down.
Fix for http://bugzilla.kernel.org/show_bug.cgi?id=7378.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
This changes the type of variable "i" in rtl8169_init_one()
from "unsigned int" to "int". "i" is checked for < 0 later,
which can never happen for "unsigned". This results in broken
error handling.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This reverts commit a2b98a697f.
As per Guennadi Liakhovetski, the mac address change support code breaks
some normal uses (_without_ any address changes), and until it's all
sorted out, we're better off without it.
Says Francois:
"Go revert it.
Despite what I claimed, I can not find a third-party confirmation by
email that it works elsewhere.
It would probably be enough to remove the call to
__rtl8169_set_mac_addr() in rtl8169_hw_start() though."
See also
http://bugzilla.kernel.org/show_bug.cgi?id=6032
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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)
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>
Inverting the write ordering of the TxDescAddr{High/Low} registers
suffices to trigger a sabbat of PCI errors which make the device
completely dysfunctional. The issue has not been reported on a
different platform.
Switching from MMIO accesses to I/O ones as done in Realtek's
own driver fixes (papers over ?) the bug as well but I am not
thrilled to see everyone pay the I/O price for an obscure bug.
This is the minimal change to handle the issue.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Reported-by: Lennert Buytenhek <buytenh@wantstofly.org>
No need to chew CPU cycles as there is no heavy timing requirement
and the delays are always requested from a sleepable context.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
From: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
- add several PCI ID for the PCI-E adapters ;
- new identification strings ;
- the RTL_GIGA_MAC_VER_ defines have been renamed to closely match the
out-of-tree driver. It makes the comparison less hairy ;
- various magic ;
- the PCI region for the device with PCI ID 0x8136 is guessed.
Explanation: the in-kernel Linux driver is written to allow MM register
accesses and avoid the IO tax. The relevant BAR register was found at
base address 1 for the plain-old PCI 8169. User reported lspci show that
it is found at base address 2 for the new Gigabit PCI-E 816{8/9}.
Typically:
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.: Unknown device 8168 (rev 01)
Subsystem: Unknown device 1631:e015
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0, cache line size 20
Interrupt: pin A routed to IRQ 16
Region 0: I/O ports at b800 [size=256]
Region 2: Memory at ff7ff000 (64-bit, non-prefetchable) [size=4K]
^^^^^^^^
So far I have not received any lspci report for the 0x8136 and
Realtek's driver do not help: be it under BSD or Linux, their r1000 driver
include a USE_IO_SPACE #define but the bar address is always hardcoded
to 1 in the MM case. :o/
- the 8168 has been reported to require an extra alignment for its receive
buffers. The status of the 8167 and 8136 is not known in this regard.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Rationale:
- its signature is not exactly pretty;
- it has no knowledge of pci_device_id;
- kiss 23 lines good bye.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
The datasheet suggests that the device handles the hardware flow
control almost automagically. User report a different story, so
let's try to twiddle the mii registers.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
For messages prior to register_netdev(), prefer dev_printk() because
that prints out both our driver name and our [PCI | whatever] bus id.
Updates: 8139{cp,too}, b44, bnx2, cassini, {eepro,epic}100, fealnx,
hamachi, ne2k-pci, ns83820, pci-skeleton, r8169.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Having separate fields in sk_buff for TSO/UFO (tso_size/ufo_size) is not
going to scale if we add any more segmentation methods (e.g., DCCP). So
let's merge them.
They were used to tell the protocol of a packet. This function has been
subsumed by the new gso_type field. This is essentially a set of netdev
feature bits (shifted by 16 bits) that are required to process a specific
skb. As such it's easy to tell whether a given device can process a GSO
skb: you just have to and the gso_type field and the netdev's features
field.
I've made gso_type a conjunction. The idea is that you have a base type
(e.g., SKB_GSO_TCPV4) that can be modified further to support new features.
For example, if we add a hardware TSO type that supports ECN, they would
declare NETIF_F_TSO | NETIF_F_TSO_ECN. All TSO packets with CWR set would
have a gso_type of SKB_GSO_TCPV4 | SKB_GSO_TCPV4_ECN while all other TSO
packets would be SKB_GSO_TCPV4. This means that only the CWR packets need
to be emulated in software.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Francois Romieu