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path: root/Documentation/PCI/MSI-HOWTO.txt
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2013-01-24PCI/MSI: Enable multiple MSIs with pci_enable_msi_block_auto()Alexander Gordeev1-5/+32
The new function pci_enable_msi_block_auto() tries to allocate maximum possible number of MSIs up to the number the device supports. It generalizes a pattern when pci_enable_msi_block() is contiguously called until it succeeds or fails. Opposite to pci_enable_msi_block() which takes the number of MSIs to allocate as a input parameter, pci_enable_msi_block_auto() could be used by device drivers to obtain the number of assigned MSIs and the number of MSIs the device supports. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/c3de2419df94a0f95ca1a6f755afc421486455e6.1353324359.git.agordeev@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2011-08-02Docs: MSI-HOWTO: MSI -> MSIsMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Insert a commaMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: can -> couldMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Use `unknown ...' rather than `... know about.'Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: may -> mightMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Insert a commaMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: API -> functionMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: , -> ;Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Move a sentence to another paragraphMichael Witten1-4/+3
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Insert `that'Michael Witten1-1/+1
... as per Randy Dunlap's wishes :-P Message-Id: <20110717114023.2b4cce91.rdunlap@xenotime.net> Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Offset modifier with a comma, and insert `yet' for emphasisMichael Witten1-3/+3
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Put the `because' subordinate clause firstMichael Witten1-4/+4
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Streamline some wordingMichael Witten1-2/+2
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: `asked for' -> `requested'Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Use present tense and streamline some wordingMichael Witten1-22/+22
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-02Docs: MSI-HOWTO: Use the subjunctive, and change `can' to `may'Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-03-31Fix common misspellingsLucas De Marchi1-2/+2
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2009-03-20PCI MSI: Add example request loop to MSI-HOWTO.txtMichael Ellerman1-1/+22
Encourage driver writers to think about supporting a variable number of MSI-X interrupts, and give an example of how to do such a request. Acked-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20PCI MSI: Add support for multiple MSIMatthew Wilcox1-6/+39
Add the new API pci_enable_msi_block() to allow drivers to request multiple MSI and reimplement pci_enable_msi in terms of pci_enable_msi_block. Ensure that the architecture back ends don't have to know about multiple MSI. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20Rewrite MSI-HOWTOMatthew Wilcox1-481/+277
I didn't find the previous version very useful, so I rewrote it. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Reviewed-by: Grant Grundler <grundler@parisc-linunx.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-11-14Create/use more directory structure in the Documentation/ tree.Randy Dunlap1-0/+509
Create Documentation/blockdev/ sub-directory and populate it. Populate the Documentation/serial/ sub-directory. Move MSI-HOWTO.txt to Documentation/PCI/. Move ioctl-number.txt to Documentation/ioctl/. Update all relevant 00-INDEX files. Update all relevant Kconfig files and source files. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
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