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path: root/drivers/net/8139cp.c
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2007-01-188139cp: Don't blindly enable interruptsChris Lalancette
Similar to this commit: http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d15e9c4d9a75702b30e00cdf95c71c88e3f3f51e It's not safe in cp_start_xmit to blindly call spin_lock_irq and then spin_unlock_irq, since it may very well be the case that cp_start_xmit was called with interrupts already disabled (I came across this bug in the context of netdump in RedHat kernels, but the same issue holds, for example, in netconsole). Therefore, replace all instances of spin_lock_irq and spin_unlock_irq with spin_lock_irqsave and spin_unlock_irqrestore, respectively, in cp_start_xmit(). I tested this against a fully-virtualized Xen guest using netdump, which happens to use the 8139cp driver to talk to the emulated hardware. I don't have a real piece of 8139cp hardware to test on, so someone else will have to do that. Signed-off-by: Chris Lalancette <clalance@redhat.com> 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>
2006-10-05IRQ: 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)
2006-09-24Merge branch 'upstream-linus' of ↵Linus Torvalds
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.
2006-09-22[NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETEPatrick McHardy
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>
2006-09-13drivers/net: const-ify ethtool_ops declarationsJeff Garzik
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-12Merge tag '8139cp-20060912-00' of ↵Jeff Garzik
git://electric-eye.fr.zoreil.com/home/romieu/linux-2.6 into tmp
2006-09-128139cp: ring_info removal for the transmit pathFrancois Romieu
As long as the descriptor fits on a single cacheline, the change should be almost free. Now ring_info is not used at all. Remove it. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2006-09-12Merge branch 'tmp' into upstreamJeff Garzik
2006-09-12[PATCH] Remove more unnecessary driver printk'sAndy Gospodarek
As I promised last week, here is the first pass at removing all unnecessary printk's that exist in network device drivers currently in promiscuous mode. The duplicate messages are not needed so they have been removed. Some of these drivers are quite old and might not need an update, but I did them all anyway. I am currently auditing the remaining conditional printk's and will send out a patch for those soon. Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-318139cp: use PCI_DEVICE() to shorten the PCI device tableFrancois Romieu
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2006-08-318139cp: pci_get_drvdata(pdev) can not be NULL in suspend handlerFrançois Romieu
1) pci_set_drvdata() is used in cp_{init/remove}_one to initialize/reset driver_data to the relevant value (resp. net_device * and NULL). 2) each of the 3 relevant functions is issued under (device *)->sem: 2.1) pci_unregister_driver -> driver_unregister -> bus_remove_driver -> driver_detach (takes (device *)->sem) -> __device_release_driver(dev) -> dev->bus-remove(dev) (== pci_device_remove) -> drv->remove(pdev) (== cp_remove_one) [...] pci_dev->driver = NULL; 2.2) pci_register_driver -> __pci_register_driver -> driver_register -> bus_add_driver -> driver_attach -> __driver_attach (takes (device *)->sem) -> driver_probe_device(drv, dev) -> dev->bus->probe(dev) (== pci_device_probe) -> _pci_device_probe(drv, pci_dev) -> pci_call_probe(drv, pci_dev, id) -> drv->probe(dev, id) (== cp_init_one) [...] pci_dev->driver = drv; 2.3) suspend_device (takes (device *)->sem) -> dev->bus->suspend(dev) (== pci_device_suspend) checking for drv = pci_dev->driver != NULL [...] -> drv->suspend(pci_dev, state) (== cp_suspend) dev->sem and the state of pci_dev->driver provide the expected result. St Mary's day was a bit rainy here. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2006-08-318139cp: removal of useless BUG_ON() checkFrancois Romieu
netdev_priv() will provide a nice oops a few lines before the BUG_ON() check. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2006-08-318139cp: sync the device private data with its r8169 counterpartFrancois Romieu
struct cp_private is reorganized to be more easily compared between the r8169 and the 8139cp drivers. The alignment should not be impacted. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2006-08-318139cp: ring_info removal for the receive pathFrancois Romieu
The ring_info.len field is not used at all. cp_private.rx_skb is turned into an array of sk_buff *. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2006-08-318139cp: remove gratuitous indirectionFrancois Romieu
dev is an argument of the current function. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2006-08-318139cp: trim ring_infoFrancois Romieu
Fat removal: the mapping address is available from the Rx/Tx descriptors. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
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>
2006-07-12[PATCH] 8139cp.c printk fixAndrew Morton
drivers/net/8139cp.c: In function 'cp_init_one': drivers/net/8139cp.c:1919: warning: format '%lx' expects type 'long unsigned int', but argument 4 has type 'resource_size_t' drivers/net/8139cp.c:1919: warning: format '%lx' expects type 'long unsigned int', but argument 5 has type 'resource_size_t' Signed-off-by: Andrew Morton <akpm@osdl.org> 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>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-27[PATCH] 64bit Resource: convert a few remaining drivers to use ↵Greg Kroah-Hartman
resource_size_t where needed Based on a patch series originally from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-27[PATCH] 64bit resource: fix up printks for resources in networks driversGreg Kroah-Hartman
This is needed if we wish to change the size of the resource structures. Based on an original patch from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-23[NET]: Merge TSO/UFO fields in sk_buffHerbert Xu
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>
2006-06-22[PATCH] 8139cp: add ethtool eeprom supportPhilip Craig
Implement the ethtool eeprom operations for the 8139cp driver. Tested on x86 and big-endian ARM. Signed-off-by: Philip Craig <philipc@snapgear.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-22[PATCH] 8139cp: fix eeprom read command lengthPhilip Craig
The read command for the 93C46/93C56 EEPROMS should be 3 bits plus the address. This doesn't appear to affect the operation of the read command, but similar errors for write commands do cause failures. Signed-off-by: Philip Craig <philipc@snapgear.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-05-26[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*Jeff Garzik
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>
2006-03-03Massive net driver const-ification.Arjan van de Ven
2006-02-278139cp: fix broken suspend/resumeFrancois Romieu
- check that the device is up before it is enabled again; - the descriptor ring indexes must be set to zero before cp_init_hw() is issued. Add a nice comment to remember that skb allocation failure is still not handled. Fixes http://bugzilla.kernel.org/show_bug.cgi?id=5681 Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2005-09-21Merge /spare/repo/linux-2.6/Jeff Garzik
2005-09-16[PATCH] 8139cp: allocate statistics space only when neededStephen Hemminger
Don't crash if ethtool statistics are requested and device is down. Fix is to allocate pci space for statistics only when needed. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-14[PATCH] drivers/net: fix-up schedule_timeout() usageNishanth Aravamudan
Use schedule_timeout_interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-14[PATCH] 8139cp: support ETHTOOL_GPERMADDRJohn W. Linville
Add support for ETHTOOL_GPERMADDR to 8139cp. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-08-18[PATCH] 8139cp - redetect link after suspendPierre Ossman
After suspend the driver needs to retest link status in case the cable has been inserted or removed during the suspend. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-06-28[NET]: Remove gratuitous use of skb->tail in network drivers.David S. Miller
Many drivers use skb->tail unnecessarily. In these situations, the code roughly looks like: dev = dev_alloc_skb(...); [optional] skb_reserve(skb, ...); ... skb->tail ... But even if the skb_reserve() happens, skb->data equals skb->tail. So it doesn't make any sense to use anything other than skb->data in these cases. Another case was the s2io.c driver directly mucking with the skb->data and skb->tail pointers. It really just wanted to do an skb_reserve(), so that's what the code was changed to do instead. Another reason I'm making this change as it allows some SKB cleanups I have planned simpler to merge. In those cleanups, skb->head, skb->tail, and skb->end pointers are removed, and replaced with skb->head_room and skb->tail_room integers. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
2005-06-268139cp: safer spin loop for get_statisticsStephen Hemminger
The spin loop in 8139cp is limited to 100 iterations when pulling hardware stats. There is no allowance for processor speed so on a fast machine, the stats may not be available that fast. Also, if the board doesn't return soon enough make sure turn the address back off to prevent later updates when memory has gone away.
2005-06-26Merge upstream (approx. 2.6.12-git8) into 'janitor' branch of netdev-2.6.Jeff Garzik
2005-05-12 [PATCH] drivers/net/8139cp: Use the DMA_{64, 32}BIT_MASK constantsTobias Klauser
The previous patch did not compile cleanly on all architectures so here's a fixed one. Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling pci_set_dma_mask() or pci_set_consistent_dma_mask() Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-05-12[PATCH] 8139cp net driver: add MODULE_VERSION
2005-05-12 [PATCH] 8139cp - add netpoll supportSteffen Klassert
Patch adds netpoll support to the 8139cp driver. The patch needs some tests because I have no NIC of this type for testing. Applies against linux-2.6.9-rc2-mm3 Signed-off-by: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
2005-05-12 [PATCH] 8139cp - module_paramStephen Hemminger
Not sure if I sent this already... Convert 8139cp to use new module_param() not old MODULE_PARM Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-05-12 [PATCH] 8139cp: SG support fixesFrancois Romieu
- suspicious length in pci_unmap_single; - wait for the last frag before freeing the relevant skb; - no need to crash when facing some unexpected csum combination.
2005-05-12[netdrvr 8139cp] TSO supportJeff Garzik
2005-04-16[PATCH] u32 vs. pm_message_t fixes for drivers/netPavel Machek
This fixes remaining u32s in drivers/ net. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
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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