From mboxrd@z Thu Jan 1 00:00:00 1970 From: jiang.liu@linux.intel.com (Jiang Liu) Date: Thu, 13 Nov 2014 19:43:42 +0800 Subject: [Patch V1 0/6] Refine generic/PCI MSI irqodmian interfaces Message-ID: <1415879029-20098-1-git-send-email-jiang.liu@linux.intel.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch set is based on tip/irq/irqdomain and tries to refine interfaces to support irqdomain for generic MSI and PCI MSI. Patch 1 is just minor fixes for tip/irq/irqdomain. Patch 2 introduces some helpers to hide struct msi_desc implementation details, so later we could move msi_list from struct pci_dev into struct device to enable generic MSI support. Patch 3 introduces msi_domain_{alloc|free}_irqs() which generalize pci_msi_domain_alloc_irqs() to support generic MSI. Patch 4 introduces default data structures and callback implementations to support msi_domain_alloc_irqs(), so reduce burden on generic MSI users. Patch 5 converts PCI MSI to use generic MSI interfaces, and also implement default callbacks for PCI MSI. Patch 6 introduces a mechanism to replace arch_setup_msi_irq()/ arch_setup_msi_irqs()/arch_teardown_msi_irq()/arch_teardown_msi_irqs(). With this patch set applied, the generic MSI and PCI MSI interfaces are much easier to use. For extreme case, you only need to define a "struct msi_domain_info" and don't need to implement any callbacks, just using the default callbacks is OK:) This patch set is also a preparation for: 1) Kill all weak functions in drivers/pci/msi.c 2) Implement support for non-PCI-compliant MSI device It has been tested on x86 platforms, comments are welcomed! Jiang Liu (6): PCI, MSI: Fix errors caused by commit e5f1a59c4e12 PCI, MSI: Introduce helpers to hide struct msi_desc implemenation details genirq: Introduce msi_domain_{alloc|free}_irqs() genirq: Provide default callbacks for msi_domain_ops PCI, MSI: Refine irqdomain interfaces to simplify its usage PCI, MSI: Provide mechanism to alloc/free MSI/MSIX interrupt from irqdomain drivers/pci/msi.c | 170 ++++++++++++++++++++++++++++++++++++++++----------- include/linux/msi.h | 90 ++++++++++++++++++++++++--- kernel/irq/msi.c | 150 ++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 366 insertions(+), 44 deletions(-) -- 1.7.10.4