[PATCH 3/4 & 4/4] Acked-by: Sean O. Stalley <sean.stalley@xxxxxxxxx> I won't be able to test it out until next week, but I like how it looks :) Thanks Again, Sean > -----Original Message----- > From: David Daney [mailto:ddaney.cavm@xxxxxxxxx] > Sent: Tuesday, October 06, 2015 4:51 PM > To: linux-kernel@xxxxxxxxxxxxxxx; linux-pci@xxxxxxxxxxxxxxx; Bjorn Helgaas; > Michael S. Tsirkin; Rafał Miłecki; linux-api@xxxxxxxxxxxxxxx; Stalley, Sean; > yinghai@xxxxxxxxxx; rajatxjain@xxxxxxxxx; gong.chen@xxxxxxxxxxxxxxx > Cc: David Daney > Subject: [PATCH v5 0/4] PCI: Add support for PCI Enhanced Allocation > "BARs" > > 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_Alloca > tion_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. > > Changes from V4 (By David Daney): > - Drop patch 5/5 to handle EA provisioned bridges. > - Drop cases for bridge resources in 2/5. > - Drop unnecessary fallback resource parent handling in 3/5 > - Small code formatting improvements. > > David Daney (2): > PCI: Handle IORESOURCE_PCI_FIXED when sizing and assigning resources. > PCI: Handle Enhanced Allocation (EA) capability for SRIOV devices. > > Sean O. Stalley (2): > PCI: Add Enhanced Allocation register entries > PCI: Add support for Enhanced Allocation devices > > drivers/pci/iov.c | 11 ++- > drivers/pci/pci.c | 189 > ++++++++++++++++++++++++++++++++++++++++++ > drivers/pci/pci.h | 1 + > drivers/pci/probe.c | 3 + > drivers/pci/setup-bus.c | 50 ++++++++++- > include/uapi/linux/pci_regs.h | 44 +++++++++- > 6 files changed, 292 insertions(+), 6 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
