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Revert "Revert "pciexp_device: Add option to allocate prefetch memory above 4G boundary"" 

This reverts commit e15f352039a371156ceef37f0434003228166e99.

Reason for revert: Resource allocator is split into old(v3) and
new(v4). So, this change to provide an option to allocate prefetch
memory above 4G boundary can be added back. Since the support for
allocating above 4G boundary is available only in resource allocator
v4, Kconfig option is accordingly updated to add depends on
RESOURCE_ALLOCATOR_V4.

Change-Id: I94e5866458c79c2719fd780f336fb5da71a7df66
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41467
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Furquan Shaikh 2020-05-15 23:35:00 -07:00 committed by Patrick Georgi
parent 1bb05ef30b
commit 32f385ebfa
2 changed files with 23 additions and 3 deletions
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16
src/device/Kconfig
View File

@ -583,6 +583,22 @@ config PCIEXP_HOTPLUG_PREFETCH_MEM
child devices. This size should be page-aligned. The default is
256 MiB.
config PCIEXP_HOTPLUG_PREFETCH_MEM_ABOVE_4G
bool
depends on RESOURCE_ALLOCATOR_V4
default y if !PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G
default n
help
This enables prefetch memory allocation above 4G boundary for the
hotplug resources.
config PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G
bool "PCI Express Hotplug Prefetch Memory Allocation below 4G boundary"
default n
help
This enables prefetch memory allocation below 4G boundary for the
hotplug resources.
config PCIEXP_HOTPLUG_IO
hex "PCI Express Hotplug I/O Space"
default 0x2000

10
src/device/pciexp_device.c
View File

@ -512,7 +512,7 @@ static void pciexp_hotplug_dummy_read_resources(struct device *dev)
{
struct resource *resource;
// Add extra memory space
/* Add extra memory space */
resource = new_resource(dev, 0x10);
resource->size = CONFIG_PCIEXP_HOTPLUG_MEM;
resource->align = 12;
@ -520,7 +520,7 @@ static void pciexp_hotplug_dummy_read_resources(struct device *dev)
resource->limit = 0xffffffff;
resource->flags |= IORESOURCE_MEM;
// Add extra prefetchable memory space
/* Add extra prefetchable memory space */
resource = new_resource(dev, 0x14);
resource->size = CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM;
resource->align = 12;
@ -528,7 +528,11 @@ static void pciexp_hotplug_dummy_read_resources(struct device *dev)
resource->limit = 0xffffffffffffffff;
resource->flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH;
// Add extra I/O space
/* Set resource flag requesting allocation above 4G boundary. */
if (CONFIG(PCIEXP_HOTPLUG_PREFETCH_MEM_ABOVE_4G))
resource->flags |= IORESOURCE_ABOVE_4G;
/* Add extra I/O space */
resource = new_resource(dev, 0x18);
resource->size = CONFIG_PCIEXP_HOTPLUG_IO;
resource->align = 12;