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path: root/drivers/infiniband/hw/ipath
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2006-10-16IB/ipath: Initialize diagpkt file on device init onlyRobert Walsh
Don't attempt to set up the diagpkt device in the module init code. Instead, wait until a piece of hardware is initialized. Fixes a problem when loading the ib_ipath module when no InfiniPath hardware is present: modprobe would go into the D state and stay there. Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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)
2006-10-04Remove all inclusions of <linux/config.h>Dave Jones
kbuild explicitly includes this at build time. Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-02IB/ipath: Fix RDMA readsRalph Campbell
The PSN used to generate the request following a RDMA read was incorrect and some state booking wasn't maintained correctly. This patch fixes that. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
2006-10-02[PATCH] namespaces: utsname: use init_utsname when appropriateSerge E. Hallyn
In some places, particularly drivers and __init code, the init utsns is the appropriate one to use. This patch replaces those with a the init_utsname helper. Changes: Removed several uses of init_utsname(). Hope I picked all the right ones in net/ipv4/ipconfig.c. These are now changed to utsname() (the per-process namespace utsname) in the previous patch (2/7) [akpm@osdl.org: CIFS fix] Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Andrey Savochkin <saw@sw.ru> Cc: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] r/o bind mount prepwork: inc_nlink() helperDave Hansen
This is mostly included for parity with dec_nlink(), where we will have some more hooks. This one should stay pretty darn straightforward for now. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-28IB/ipath: Fix lockdep error upon "ifconfig ibN down"Bryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Fix races with ib_resize_cq()Bryan O'Sullivan
The resize CQ function changes the memory used to store the queue. Other routines need to honor the lock before accessing the pointer to the queue and verify that the head and tail are in range. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Support new PCIE device, QLE7142Bryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Set CPU affinity earlyBryan O'Sullivan
This change moves around port assignment so that it happens before any memory is allocated. This allows memory to be allocated on an appropriate CPU, which improves performance for users of /dev/ipath. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Fix EEPROM read when driver is compiled with -OsBryan O'Sullivan
The EEPROM is read via programmable I/O pins. When the driver is compiled -Os, the CPU can speculatively read the I/O value before it is valid. This patch fixes the problem. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Fix and recover TXE piobuf and PBC parity errorsBryan O'Sullivan
We can sometimes trigger parity errors due to processor speculative reads to our write-combined memory (mostly seen on Woodcrest). Add a stats counter for these. Factored out the sendbuffererror buffer cancellation code so it can be used in the new handling; suppress likely subsequent error messages if within two jiffies of the cancellation. Also restore 2 dropped TXE lines on hwe_bitsextant noticed while debugging. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Change HT CRC message to indicate how to resolve problemBryan O'Sullivan
The system must be powercycled to clear a HT CRC error; reloading the driver is not enough. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Clean up module exit codeBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Call mtrr_del with correct argumentsBryan O'Sullivan
We were passing 0 for base and length, which worked on older kernels, but it doesn't seem to any longer. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Flush RWQEs if access error or invalid error seenBryan O'Sullivan
If the receiver goes into the error state, we need to flush the posted receive WQEs. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Improved support for PowerPCBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Drop unnecessary "(void *)" castsBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Support multiple simultaneous devices of different typesBryan O'Sullivan
Prior to this change, the driver was not able to support a HT and PCIE card simultaneously present in the same machine. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Fix mismatch in shifts and masks for printing debug infoBryan O'Sullivan
Fixed mismatch in linkstate/trainingstate shifts and masks in the IPATH_IBSTATE_MASK macro. It kept some linktrainingstates from being printed correctly in debug; no functionality issue unless I misread the code. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Fix compiler warnings and errors on non-x86_64 systemsBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Print more informative parity error messagesBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Ensure that PD of MR matches PD of QP checking the RkeyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: RC and UC should validate SLID and DLIDBryan O'Sullivan
This is required for IB conformance (spec ch. 9.6.1.5). Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Only allow complete writes to flashBryan O'Sullivan
Don't allow a write to the eeprom from ipathfs unless the write is exactly 128 bytes and starts at offset 0. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Count SRQs properlyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Lock and count allocated CQs properlyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Clean up handling of GUID 0Bryan O'Sullivan
Respond with an error to the SM if our GUID is 0, and don't allow the user to set our GUID to 0. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Unregister from IB core earlyBryan O'Sullivan
This gives upper-level protocols a chance to unregister while the device is still usable. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Support revision 2 InfiniPath PCIE devicesBryan O'Sullivan
This also entailed a little GPIO-interrupt general cleanup. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Driver support for userspace sharing of HW contextsBryan O'Sullivan
This allows multiple userspace processes to share a single hardware context in a master/slave arrangement. It is backwards binary compatible with existing userspace. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Fix memory leak if allocation failsBryan O'Sullivan
If the second allocation failed, the first structure allocated in this routine was not freed. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Limit # of packets sent without an ACK receivedBryan O'Sullivan
The sender requests an ACK every 1/2 MB to avoid retransmit timeouts that were causing MVAPICH mod_bw to fail after a predictable number of sends. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-27[PATCH] inode-diet: Eliminate i_blksize from the inode structureTheodore Ts'o
This eliminates the i_blksize field from struct inode. Filesystems that want to provide a per-inode st_blksize can do so by providing their own getattr routine instead of using the generic_fillattr() function. Note that some filesystems were providing pretty much random (and incorrect) values for i_blksize. [bunk@stusta.de: cleanup] [akpm@osdl.org: generic_fillattr() fix] Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27[PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_privateTheodore Ts'o
The following patches reduce the size of the VFS inode structure by 28 bytes on a UP x86. (It would be more on an x86_64 system). This is a 10% reduction in the inode size on a UP kernel that is configured in a production mode (i.e., with no spinlock or other debugging functions enabled; if you want to save memory taken up by in-core inodes, the first thing you should do is disable the debugging options; they are responsible for a huge amount of bloat in the VFS inode structure). This patch: The filesystem or device-specific pointer in the inode is inside a union, which is pretty pointless given that all 30+ users of this field have been using the void pointer. Get rid of the union and rename it to i_private, with a comment to explain who is allowed to use the void pointer. This is just a cleanup, but it allows us to reuse the union 'u' for something something where the union will actually be used. [judith@osdl.org: powerpc build fix] Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Judith Lebzelter <judith@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26MSI: Rename PCI_CAP_ID_HT_IRQCONF into PCI_CAP_ID_HTBrice Goglin
0x08 is the HT capability, while PCI_CAP_ID_HT_IRQCONF would be the subtype 0x80 that mpic_scan_ht_pic() uses. Rename PCI_CAP_ID_HT_IRQCONF into PCI_CAP_ID_HT. And by the way, use it in the ipath driver instead of defining its own HT_CAPABILITY_ID. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-23[PATCH] missing includes from infiniband mergeAl Viro
indirect chains of includes are arch-specific and can't be relied upon... (hell, even attempt to build it for itanic would trigger vmalloc.h ones; err.h triggers on e.g. alpha). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22RDMA: iWARP Core Changes.Tom Tucker
Modifications to the existing rdma header files, core files, drivers, and ulp files to support iWARP, including: - Hook iWARP CM into the build system and use it in rdma_cm. - Convert enum ib_node_type to enum rdma_node_type, which includes the possibility of RDMA_NODE_RNIC, and update everything for this. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB: Whitespace fixesRoland Dreier
Remove some trailing whitespace that has snuck in despite the best efforts of whitespace=error-all. Also fix a few other whitespace bogosities. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: control receive polarity inversionBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: fix return value from ipath_pollBryan O'Sullivan
This stops the generic poll code from waiting for a timeout. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: allow SMA to be disabledBryan O'Sullivan
This is useful for testing purposes. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: handle sq_sig_all field correctlyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: put a limit on the number of QPs that can be createdBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: validate path_mig_state properlyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: be more strict about testing the modify QP verbBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: add serial number to hardware freeze error messageBryan O'Sullivan
Also added the word "Hardware" after "Fatal" to make it more obvious that it's hardware, not software. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: support new QLogic product naming schemeBryan O'Sullivan
This patch only renames files, fixes product names, and updates comments. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: account for attached QPs correctlyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: do not allow use of CQ entries with invalid countsBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>