From 8193b068d49478e036c0d2ed3e3f717d767eedde Mon Sep 17 00:00:00 2001 From: Nico Huber Date: Wed, 21 Oct 2015 15:43:41 +0200 Subject: allocator: Page align memory mapped PCI resources To help hypervisors to assign PCI devices individually to virtualization guests, page align dynamically allocated MMIO resources. Tested with kontron/ktqm77 which has dynamically configured onboard devices on the root bus and secondary buses. Booted Linux and checked the configuration with `lspci -v`. Got the configuration through Muen's tools which are very picky about overlapping and alignment. Booted a Muen based system that uses many onboard devices. GMA, xHCI and one NIC (on a secondary bus) were verified to function properly. Change-Id: I2b7115070e1ccad64565feff025289732c3b5e66 Signed-off-by: Nico Huber Reviewed-on: http://review.coreboot.org/12111 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/include/device/pci_def.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/include') diff --git a/src/include/device/pci_def.h b/src/include/device/pci_def.h index ef3427b4e7..04cf945527 100644 --- a/src/include/device/pci_def.h +++ b/src/include/device/pci_def.h @@ -78,6 +78,13 @@ #define PCI_BASE_ADDRESS_IO_ATTR_MASK 0x03 /* bit 1 is reserved if address_space = 1 */ +#ifndef __ROMCC__ +static inline int pci_base_address_is_memory_space(unsigned int attr) +{ + return (attr & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_MEMORY; +} +#endif + /* Header type 0 (normal devices) */ #define PCI_CARDBUS_CIS 0x28 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c -- cgit v1.2.3