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path: root/drivers/net/b44.c
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2007-10-10[NET]: Make NAPI polling independent of struct net_device objects.Stephen Hemminger
Several devices have multiple independant RX queues per net device, and some have a single interrupt doorbell for several queues. In either case, it's easier to support layouts like that if the structure representing the poll is independant from the net device itself. The signature of the ->poll() call back goes from: int foo_poll(struct net_device *dev, int *budget) to int foo_poll(struct napi_struct *napi, int budget) The caller is returned the number of RX packets processed (or the number of "NAPI credits" consumed if you want to get abstract). The callee no longer messes around bumping dev->quota, *budget, etc. because that is all handled in the caller upon return. The napi_struct is to be embedded in the device driver private data structures. Furthermore, it is the driver's responsibility to disable all NAPI instances in it's ->stop() device close handler. Since the napi_struct is privatized into the driver's private data structures, only the driver knows how to get at all of the napi_struct instances it may have per-device. With lots of help and suggestions from Rusty Russell, Roland Dreier, Michael Chan, Jeff Garzik, and Jamal Hadi Salim. Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra, Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan. [ Ported to current tree and all drivers converted. Integrated Stephen's follow-on kerneldoc additions, and restored poll_list handling to the old style to fix mutual exclusion issues. -DaveM ] Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31[NET]: ethtool_perm_addr only has one implementationMatthew Wilcox
All drivers implement ethtool get_perm_addr the same way -- by calling the generic function. So we can inline the generic function into the caller and avoid going through the drivers. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-08b44: use netdev_alloc_skbStephen Hemminger
Use netdev_alloc_skb rather than dev_alloc_skb when allocating receive buffers. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-08b44: packet offset is constantStephen Hemminger
The receive buffer offset is constant in this driver. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-08b44: tx bounce sizing.Stephen Hemminger
No need to grap full size MTU buffer for possibly small transmit bounce buffers. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-08b44: timer power savingStephen Hemminger
Make the PHY and statistic timer run on one second boundary for powersaving. On resume, the driver should check for link up immediately, to get online faster (rather than waiting for the next second). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-25[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}Arnaldo Carvalho de Melo
To clearly state the intent of copying from linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2007-04-25[ETH]: Make eth_type_trans set skb->dev like the other *_type_transArnaldo Carvalho de Melo
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>
2007-04-03b44: fix IFF_ALLMULTI handling of CAM slotsBill Helfinstine
If you set the IFF_ALLMULTI flag on a b44 device, or if you join more than B44_MCAST_TABLE_SIZE multicast groups, the device will stop receiving unicast messages. This is because the __b44_set_mac_addr call sets the zeroth CAM entry to the MAC address of the device, and then the loop at line 1722 proceeds to overwrite it unless the value of i is set by the __b44_load_mcast call. However, when IFF_ALLMULTI is set, that call is bypassed, leaving i set to zero. Fixed by starting the loop at 1 to make it skip the CAM entry for the MAC address. Signed-off-by: Bill Helfinstine <bhelf@flitterfly.whirpon.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-17B44: increase wait loopGary Zambrano
The b44 Enet control disable bit may take longer to clear on some systems, so the loop count is increased with this patch. Functionality is not compromised, but a debug message can be seen when the bit is not cleared within the count value. Thanks to Vasileios Lourdas who reported the problem. Signed-off by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-17b44: replace defineGary Zambrano
Replaced B44_DMA_MASK with DMA_30BIT_MASK. Signed-off by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-06b44 endian annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-30Broadcom 4400 resume small fixDmitriy Monakhov
Some issues in b44_resume(). - Return value of pci_enable_device() was ignored. - If request_irq() has failed we have to just disable device and exit. Signed-off-by: Dmitriy Monakhov <dmonakhov@openvz.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-30b44: src_desc->addr is little-endianAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-30b44: Fix frequent link changesMichael Chan
This fixes the issue of frequent link changes under heavy traffic reported below: http://bugzilla.kernel.org/show_bug.cgi?id=7696 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=216338 The b44 chip occasionally needs to be reset when ISTAT_ERRORS are encountered. The reset sequence includes a PHY reset that will take many seconds to complete and cause the link to go down and up. By skipping the PHY reset, it will greatly reduce the interruption when ISTAT_ERRORS are encountered. Change the full_reset parameter to reset_kind parameter in b44_init_hw(). This will allow PHY reset to be skipped when ISTAT_ERRORS are encountered. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-26netpoll: drivers must not enable IRQ unconditionally in their NAPI handlerFrancois Romieu
net/core/netpoll.c::netpoll_send_skb() calls the poll handler when it is available. As netconsole can be used from almost any context, IRQ must not be enabled blindly in the NAPI handler of a driver which supports netpoll. b57bd06655a028aba7b92e1c19c2093e7fcfb341 fixed the issue for the 8139too.c driver. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-11-07[PATCH] b44: change comment about irq mask registerJohannes Berg
Through some experimentation with the similarly built bcm43xx I came to the conclusion that if the hw/firmware sets a bit in the interrupt register, an interrupt will only be raised if that bit is included in the interrupt mask. Hence, the interrupt mask is more like an interrupt control mask. This patch changes the comment to reflect that. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-11[PATCH] b44: fix eeprom endianess issueMichael Buesch
This fixes eeprom read on big-endian architectures. readw returns the data in CPU order. With cpu_to_le16 we convert it to little endian, because "ptr" is a pointer to a _byte_ arrray. See the cast above. A byte array is little endian. The bug is: Reading u16 values with readw, casting them into an u8 array and accessing this u8 array as an u8 (byte) array. The correct fix is to swap the CPU-ordering value returned by readw into little endian, as the u8 array is little endian. This compiles to nothing on little endian hardware (so it does not change b44 code on LE hardware), but _fixes_ code on BE hardware. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-11Merge branch 'master' into upstream-fixesJeff Garzik
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
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[netdrvr] b44: handle excessive multicast groupsJeff Garzik
If there are more than B44_MCAST_TABLE_SIZE groups in the dev->mc_list, it will only listen to the first B44_MCAST_TABLE_SIZE that it sees. This change makes the driver go into RXCONFIG_ALLMULTI mode if there are more than B44_MCAST_TABLE_SIZE groups being subscribed to, similar to other network drivers. Noticed by Bill Helfinstine <bhelf@flitterfly.whirpon.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-13drivers/net: const-ify ethtool_ops declarationsJeff Garzik
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-19drivers/net: Remove deprecated use of pci_module_init()Jeff Garzik
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>
2006-07-05[netdrvr] use dev_xxx() printk helpers, rather than dev_printk(KERN_xxx, ...Jeff Garzik
Suggested by Jiri Slaby. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-05[netdrvr] Use dev_printk() when ethernet interface isn't availableJeff Garzik
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>
2006-07-02[PATCH] irq-flags: drivers/net: Use the new IRQF_ constantsThomas Gleixner
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>
2006-06-22[PATCH] b44: update version to 1.01Gary Zambrano
Update the driver version to 1.01 Signed-off-by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-22[PATCH] b44: add wol for old nicGary Zambrano
This patch adds wol support for the older 440x nics that use pattern matching. This patch is a redo thanks to feedback from Michael Chan and Francois Romieu. Signed-off-by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-22[PATCH] b44: add parameterGary Zambrano
This patch adds a parameter to init_hw() to not completely initialize the nic for wol. Signed-off-by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-22[PATCH] b44: add wolGary Zambrano
Adds wol to the driver. This is a redo of a previous patch thanks to feedback from Francois Romieu. Signed-off-by Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-22[PATCH] b44: fix manual speed/duplex/autoneg settingsGary Zambrano
Fixes for speed/duplex/autoneg settings and driver settings info. This is a redo of a previous patch thanks to feedback from Jeff Garzik. Signed-off-by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-05-16[PATCH] x86_64: Check for bad dma address in b44 1GB DMA workaroundAndi Kleen
Needed for interaction with the nommu code in x86-64 which will return bad_dma_address if the address exceeds dma_mask. Cc: netdev@vger.kernel.org Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-12[netdrvr b44] trim trailing whitespaceJeff Garzik
2006-04-12[PATCH] b44: increase version to 1.00Gary Zambrano
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-12[PATCH] b44: disable default tx pauseGary Zambrano
Disable default tx pause frame support. The b44 controller has a bug that generates excessive tx pause frames. Signed-off-by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02BUG_ON() Conversion in drivers/net/Eric Sesterhenn
this changes if() BUG(); constructs to BUG_ON() which is cleaner, contains unlikely() and can better optimized away. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-29[PATCH] b44: ensure valid mac addrGary Zambrano
Added code to check for invalid MAC address from eeprom or user input. Signed-off-by: Gary Zambrano <zambrano@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29b44: fix force mac address before ifconfig upGary Zambrano
Initializing the b44 MAC & PCI functional blocks in the controller must occur inside init_one(). This will allow access to the MAC registers. The controller was being powered up in b44_open() which would not allow access to the registers before ifconfig was up. Philip Kohlbecher found this bug. Signed-off-by: Gary Zambrano <zambrano@broadcom.com>
2006-01-26[PATCH] b44: fix laptop carrier detectStephen Hemminger
On my laptop, the b44 device is created and the carrier state defaults to ON when created by alloc_etherdev. This means tools like NetworkManager see the carrier as On and try and bring the device up. The correct thing to do is mark the carrier as Off when device is created. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17[PATCH] Fix warning with b44.c on 64bit boxesAlan Cox
sizeof() return is not an int, so use max_t to get the types right. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-30b44: increase version numberFrancois Romieu
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2005-11-30b44: early return in dev->do_ioctl when the device is not upFrancois Romieu
The device has not gone through a whole reset/init sequence until the device is up. Accessing the mii interface before this point is not safe. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2005-11-30b44: missing netif_wake_queue() in b44_open()Mark Lord
This patch fixes a problem plaguing Dell notebooks with built-in b44 ethernet: The driver refuses to transmit packets of any kind until after the first 5-second tx_timeout occurs. This bug causes DHCP negotiation to fail (timeout) during installation of Ubuntu Linux. Signed-off-by: Mark Lord <lkml@rtr.ca> Signed-off-by: Andrew Morton <akpm@osdl.org>
2005-11-09Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
2005-11-09[PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reasonOlaf Hering
This patch removes almost all inclusions of linux/version.h. The 3 #defines are unused in most of the touched files. A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is unfortunatly in linux/version.h. There are also lots of #ifdef for long obsolete kernels, this was not touched. In a few places, the linux/version.h include was move to where the LINUX_VERSION_CODE was used. quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'` search pattern: /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] b44: increase version numberFrancois Romieu
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-09[PATCH] b44: race on device closingFrancois Romieu
Usual fix: - b44_interrupt() does not schedule NAPI polling when the device is going down; - b44_close() waits for any scheduled NAPI polling before it starts to release the private structures of the device. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-09[PATCH] b44: replace B44_FLAG_INIT_COMPLETE with netif_running()Francois Romieu
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-07[PATCH] b44: late request_irq in b44_openFrancois Romieu
Don't request_irq before the registers are reset/init. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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