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path: root/drivers/pcmcia/pcmcia_resource.c
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* [PATCH] pcmcia: update alloc_io_space for conflict checking for ↵Kaustav Majumdar2006-10-25
| | | | | | | | | | | | | | | | | | | multifunction PC card Some PCMCIA cards do not mention specific IO addresses in the CIS. In that case, inside the alloc_io_space function, conflicts are detected (the function returns 1) for the second function of a multifunction card unless the length of IO address range required is greater than 0x100. The following patch will remove this conflict checking for a PCMCIA function which had not mentioned any specific IO address to be mapped from. The patch is tested for Linux kernel 2.6.15.4 and works fine in the above case and is as suggested by Dave Hinds. Signed-off-by: Kaustav Majumdar <kaustav.majumdar@wipro.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* [PATCH] pcmcia: fix ioctl GET_CONFIGURATION_INFO for pcmcia_cardsDaniel Ritz2006-07-31
| | | | | | | | | | | Values displayed when by cardctl config are horribly wrong for 16bit cards. this fixes it up by not using memcpy() since source and target struct are very different. Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] irq-flags: misc drivers: Use the new IRQF_ constantsThomas Gleixner2006-07-02
| | | | | | | | | 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> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: warn if driver requests exclusive, but gets a shared IRQAlan Cox2006-06-30
| | | | | | | | | | | The patch below cleans up the pcmcia code a bit on the IRQ side (I did this while debugging the problem just so I could read wtf it was doing), and also adds a warning and passes back the correct information when a device asks for exclusive but gets given shared. This at least means the dmesg dump of a problem triggered by this will have a signature to find. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia/pcmcia_resource.c: fix crash when using Cardbus cardsDaniel Ritz2006-04-21
| | | | | | | | | | | | Using the old ioctl interface together with cardbus card gives a NULL pointer dereference since cardbus devices don't have a struct pcmcia_device. also s->io[0].res can be NULL as well. Fix is to move the pcmcia code after the cardbus code and to check for a null pointer. Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: fix oops in static mapping caseDominik Brodowski2006-04-21
| | | | | | | As static maps do not have IO resources, this setting oopses. However, as we do not ever read this value, we can safely remove it. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: do not set dev_node to NULL too earlyDominik Brodowski2006-04-21
| | | | | | | | If we set dev_node to NULL too early, some drivers which used this to determine whether unregister_netdev() needs to be called fail when removing a PCMCIA card. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: use bitfield instead of p_state and stateDominik Brodowski2006-03-31
| | | | | | | | | | Instead of the two status values struct pcmcia_device->p_state and state, use descriptive bitfields. Most value-checking in drivers was invalid, as the core now only calls the ->remove() (a.k.a. detach) function in case the attachement _and_ configuration was successful. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: make pcmcia_release_{io,irq} staticAdrian Bunk2006-03-31
| | | | | | | | | We can now make pcmcia_release_{io,irq} static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: embed dev_link_t into struct pcmcia_deviceDominik Brodowski2006-03-31
| | | | | | | | | Embed dev_link_t into struct pcmcia_device(), as they basically address the same entity. The actual contents of dev_link_t will be cleaned up step by step. This patch includes a bugfix from and signed-off-by Andrew Morton. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: rename pcmcia_device.stateDominik Brodowski2006-03-31
| | | | | | | | | Rename pcmcia_device.state (which is used in very few places) to p_state in order to avoid a namespace collision when moving the deprecated dev_link_t into struct pcmcia_device Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: remove unneeded Vcc pseudo settingDominik Brodowski2006-03-31
| | | | | | | | | As we do not allow setting Vcc in the pcmcia core, and Vpp1 and Vpp2 can only be set to the same value, a lot of code can be streamlined. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: remove export of pcmcia_release_configurationDominik Brodowski2006-03-31
| | | | | | | | | | Handle the _modifying_ operation sm91c92_cs requires in pcmcia_modify_configuration, so that the only remaining users of pcmcia_release_configuration() are within the pcmcia core module. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: convert remaining users of pcmcia_release_io and _irqDominik Brodowski2006-03-31
| | | | | | | | Convert the remaining drivers which use pcmcia_release_io or pcmcia_release_irq, and remove the EXPORT of these symbols. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: add pcmcia_disable_deviceDominik Brodowski2006-03-31
| | | | | | | | | | pcmcia_disable_device(struct pcmcia_device *p_dev) performs the necessary cleanups upon device or driver removal: it calls the appropriate pcmcia_release_* functions, and can replace (most) of the current drivers' _release() functions. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: remove duplicate fields in io_window_tDominik Brodowski2006-03-31
| | | | | | | | BasePort, NumPorts and Attributes are or can be embedded in struct resource, so remove them. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: remove include of config.hDominik Brodowski2006-03-31
| | | | | | | Remove the inclusion of include/config.h as it isn't needed any longer. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: always use device pointer to config_tDominik Brodowski2006-03-31
| | | | | | | | Update the remaining users using the static lookup table of the PCMCIA function configuration to use the struct pcmcia_device-contained pointer. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: access config_t using pointer instead of arrayDominik Brodowski2006-03-31
| | | | | | | | | Access the PCMCIA config_t struct (one per device function) using a pointer in struct pcmcia_device, instead of looking them up in an array. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: remove unused field Present from config_tDominik Brodowski2006-03-31
| | | | | | | | config_t.Present is set to the same value as CardValues, which isn't modified anywhere. Therefore, we can use only one of these two objects. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* [PATCH] pcmcia: add pcmcia to IRQ informationBrice Goglin2005-09-09
| | | | | | | | | | | Add a devname parameter to the pcmcia_device structure, fills it with "pcmcia<bus_id>" in pcmcia_device_add, and passes it to request_irq in pcmcia_request_irq. Signed-off-by: Brice Goglin <Brice.Goglin@ens-lyon.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: remove unused Vpp1, Vpp2 and VccDominik Brodowski2005-09-09
| | | | | | | | config_t->Vpp1, Vpp2 and Vcc are never read, so remove them. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix pcmcia_request_irq() for multifunction cardDaniel Ritz2005-09-09
| | | | | | | | | | | | | multifunction cards need to have the same irq assigned to both functions. the code tries that but fails because ret is still set to CS_IN_USE which results in the function having the CB irq assigned. yenta_set_socket then just changes the irq routing to use the PCI interrupt but the first functions irq handler is registered on an ISA interrupt. boom. Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] missing include in pcmcia_resource.cAl Viro2005-08-23
| | | | | | | missing include of asm/irq.h Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: fix sharing IRQs and request_irq without IRQ_HANDLE_PRESENTDominik Brodowski2005-07-28
| | | | | | | | | | | | | | | | | | | | | Debugging and description from: Noah Misch <noah@cs.caltech.edu> When a driver calls pcmcia_request_irq with IRQ_HANDLE_PRESENT unset, it looks for an open IRQ by request_irq()ing with a dummy handler and NULL dev_info. free_irq uses dev_info as a key for identifying the handler to free among those sharing an IRQ, so request_irq returns -EINVAL if dev_info is NULL and the IRQ may be shared. That unknown error code is the -EINVAL. It looks like only pcnet_cs and axnet_cs are affected. Most other drivers let pcmcia_request_irq install their interrupt handlers. sym53c500_cs requests its IRQ manually, but it cannot share an IRQ. The appended patch changes pcmcia_request_irq to pass an arbitrary, unique, non-NULL dev_info with the dummy handler. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: remove references to pcmcia/version.hDominik Brodowski2005-07-07
| | | | | | | | As a follow-up, remove the inclusion of pcmcia/version.h in many files. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: reduce client_handle_t usageDominik Brodowski2005-07-07
| | | | | | | | | Reduce the occurences of "client_handle_t" which is nothing else than a pointer to struct pcmcia_device by now. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: remove client_t usageDominik Brodowski2005-07-07
| | | | | | | | | Reduce the occurences of "client_handle_t" which is nothing else than a pointer to struct pcmcia_device by now. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: 8 and 16 bit access for static_mapDominik Brodowski2005-06-27
| | | | | | | | | | | | | | | | | | | | The PCMCIA card services layer is never setting the i/o map attributes when SS_CAP_STATIC_MAP is specified. Net result, sockets' set_io_map() calls always see requests with most flags clear, meaning 8 bit access. For hardware that always autosizes, that won't matter; and all current STATIC_MAP drivers ignore those attributes. A new driver (for at91rm9200) suffers badly from this, since this forces everything into 8 bit mode and that breaks both (a) cards requiring 16 bit access, and (b) ide-cs; but of course 8-bit cards work OK (as does accessing card attributes). So this patch arranges to pass the attributes down, matching the behavior for non-static mappings (using the first/only I/O window). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: ds.c cleanupDominik Brodowski2005-06-27
| | | | | | | | Clean up ds.c Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pcmcia: move pcmcia resource handling out of cs.cDominik Brodowski2005-06-27
Move the 16-bit PCMICA resource handling from pcmcia_core.o to pcmcia.o. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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