Hi David, I did a quick look through & overall I what you have done. I will try to find some time to do a full review early next week. Thanks Again, Sean On Fri, Oct 02, 2015 at 03:37:51PM -0700, David Daney wrote: > From: David Daney <david.daney@xxxxxxxxxx> > > The original patches are from Sean O. Stalley. I made a few tweaks, > but feel that it is substancially Sean's work, so I am keeping the > patch set version numbering scheme going. > > Tested on Cavium ThunderX system with 4 Root Complexes containing 50 > devices/bridges provisioned with EA. > > Here is Sean's description of the patches: > > PCI Enhanced Allocation is a new method of allocating MMIO & IO > resources for PCI devices & bridges. It can be used instead > of the traditional PCI method of using BARs. > > EA entries are hardware-initialized to a fixed address. > Unlike BARs, regions described by EA are cannot be moved. > Because of this, only devices which are permanently connected to > the PCI bus can use EA. A removable PCI card must not use EA. > > This patchset adds support for using EA entries instead of BARs > on Root Complex Integrated Endpoints. > > The Enhanced Allocation ECN is publicly available here: > https://www.pcisig.com/specifications/conventional/ECN_Enhanced_Allocation_23_Oct_2014_Final.pdf > > > Changes from V1: > - Use generic PCI resource claim functions (instead of EA-specific functions) > - Only add support for RCiEPs (instead of all devices). > - Removed some debugging messages leftover from early testing. > > Changes from V2 (By David Daney): > - Add ea_cap to struct pci_device, to aid in finding the EA capability. > - Factored EA entity decoding into a separate function. > - Add functions to find EA entities by BEI or Property. > - Add handling of EA provisioned bridges. > - Add handling of EA SRIOV BARs. > - Try to assign proper resource parent so that SRIOV device creation can occur. > > Changes from V3 (By David Daney): > - Discarded V3 changes and started over fresh based on Sean's V2. > - Add more support/checking for Entry Properties. > - Allow EA behind bridges. > - Rewrite some error messages. > - Add patch 3/5 to prevent resizing, and better handle > assigning, of fixed EA resources. > - Add patch 4/5 to handle EA provisioned SRIOV devices. > - Add patch 5/5 to handle EA provisioned bridges. > > David Daney (3): > PCI: Handle IORESOURCE_PCI_FIXED when sizing and assigning resources. > PCI: Handle Enhanced Allocation (EA) capability for SRIOV devices. > PCI: Handle Enhanced Allocation (EA) capability for bridges > > Sean O. Stalley (2): > PCI: Add Enhanced Allocation register entries > PCI: Add support for Enhanced Allocation devices > > drivers/pci/bus.c | 7 ++ > drivers/pci/iov.c | 11 ++- > drivers/pci/pci.c | 202 ++++++++++++++++++++++++++++++++++++++++++ > drivers/pci/pci.h | 1 + > drivers/pci/probe.c | 34 ++++++- > drivers/pci/setup-bus.c | 63 ++++++++++++- > include/linux/pci.h | 1 + > include/uapi/linux/pci_regs.h | 44 ++++++++- > 8 files changed, 355 insertions(+), 8 deletions(-) > > -- > 1.9.1 > -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
