On Mon, Dec 30, 2013 at 08:28:12AM +0100, Alexander Gordeev wrote: > This series is against "next" branch in Bjorn's repo: > git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git > > Changes from v4 to v5: > - pci_auto_enable_msi* functions renamed to pci_enable_msi* ones; > - pci_enable_msi_range() and pci_enable_msix_range() are the only > basic interfaces left to enable MSI/MSI-X operation; > - pci_enable_msi(), pci_enable_msi_block() and pci_enable_msix() old > interfaces deprecated in favour of pci_enable_msi/msix_range() ones; > description of the old interfaces is removed from the documentation; > - pci_get_msi_vec_count() renamed to pci_msi_vec_count() and > pci_get_msix_vec_count() renamed to pci_msix_vec_count(); > > Changes from v3 to v4: > - pcim_enable_msi* functions renamed to pci_auto_enable_msi* ones; > - PowerPC patches dropped; > - pci_get_msi_cap() renamed to pci_get_msi_vec_count() and > pci_msix_table_size() renamed to pci_get_msix_vec_count(); > > Changes from v2 to v3: > - new public interfaces commented in drivers/pci/msi.c; > - patch "Make quota traversing and requesting race-safe" explained; > - pci_enable_msi/msix() 'nvec' arg type changed from 'unsigned int' to 'int'; > - pcim_enable_msi*() arg 'nvec' renamed to 'maxvec' when upper limit passed; > - pcim_enable_msi*(..., maxvec, minvec) arg order swapped to minvec, maxvec; > - "PCI: Fail MSI/MSI-X initialization if device is not in PCI_D0" commit > 869a161 and "PCI/MSI: Factor out pci_get_msi_cap() interface" patch > conflicts resolved; > > This update introduces pci_enable_msi_range() function which > supersedes pci_enable_msi() and pci_enable_msi_block() > interfaces for MSI and pci_enable_msi_range() function which > supersedes pci_enable_msix() interface for MSI-X interrupts. > > The plan is to convert all drivers to the new interfaces and > then remove existing pci_enable_msi(), pci_enable_msi_block() > and pci_enable_msix() functions. > > The newly introduced functions return either a negative error > code or a number of successfully allocated MSI/MSI-X interrupts. > > Unlike the old interfaces where the "third" state indicates > a possible number of MSI interrupts that could have been > allocated, the new interfaces allow device drivers not to deal > with tri-state return values and hide fallback logic behind > the implementation. > > As result, device drivers are expected to have more clearer > and straight code. > > The tree could be found in "pci-next-msi-v5" branch in repo: > https://github.com/a-gordeev/linux.git > > Alexander Gordeev (4): > PCI/MSI: Factor out pci_msi_vec_count() interface > PCI/MSI: Get rid of pci_enable_msi_block_auto() interface > PCI/MSI: Introduce pci_msix_vec_count() interface > PCI/MSI: Introduce pci_enable_msi/msix_range() interfaces I applied all four of these to my pci/msi branch for v3.14. Thanks a lot for all your work on this! I'm looking forward to the driver conversions and bug fixes :) Bjorn > Documentation/PCI/MSI-HOWTO.txt | 308 ++++++++++++++++++++++++++------------- > drivers/ata/ahci.c | 56 +++++--- > drivers/pci/msi.c | 150 +++++++++++++++----- > drivers/pci/pcie/portdrv_core.c | 7 +- > include/linux/pci.h | 27 +++- > 5 files changed, 385 insertions(+), 163 deletions(-) > > -- > 1.7.7.6 > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
