From: "Corvin Köhne" <c.koehne@beckhoff.com>
To: <devel@edk2.groups.io>
Cc: p.bruenn@beckhoff.com, lersek@redhat.com,
ardb+tianocore@kernel.org, jordan.l.justen@intel.com,
rebecca@bsdio.com, grehan@freebsd.org,
"Corvin Köhne" <c.koehne@beckhoff.com>
Subject: [PATCH v2 2/2] OvmfPkg/Bhyve: use static PCI32Base address
Date: Thu, 24 Jun 2021 08:05:16 +0200 [thread overview]
Message-ID: <20210624060516.211-3-c.koehne@beckhoff.com> (raw)
In-Reply-To: <20210624060516.211-1-c.koehne@beckhoff.com>
It's neccessary to allocate a Graphics Stolen Memory area to enable
GPU-Passthrough for integrated Intel GPUs. Therefore, use a new
memory layout with a static Pci32Baseaddress.
Old layout:
[... , lowmemlimit] RAM
[lowmemlimit, 0xE000 0000] PCI Space
New layout:
[... , lowmemlimit] RAM
[lowmemlimit, gsmbase ] Memory hole (may be absent)
[gsmbase , 0xC000 0000] GSM (may be absent)
[0xC000 0000, 0xE000 0000] PCI Space
---
OvmfPkg/Bhyve/BhyveX64.dsc | 4 ++--
OvmfPkg/Bhyve/PlatformPei/Platform.c | 4 +++-
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/OvmfPkg/Bhyve/BhyveX64.dsc b/OvmfPkg/Bhyve/BhyveX64.dsc
index 22a6f11069..b678029b40 100644
--- a/OvmfPkg/Bhyve/BhyveX64.dsc
+++ b/OvmfPkg/Bhyve/BhyveX64.dsc
@@ -537,8 +537,8 @@
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId|0
gUefiOvmfPkgTokenSpaceGuid.PcdPciIoBase|0x0
gUefiOvmfPkgTokenSpaceGuid.PcdPciIoSize|0x0
- gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Base|0x0
- gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size|0x0
+ gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Base|0xC0000000
+ gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size|0x20000000
gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Base|0x0
gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size|0x800000000
diff --git a/OvmfPkg/Bhyve/PlatformPei/Platform.c b/OvmfPkg/Bhyve/PlatformPei/Platform.c
index 3a414ffcb7..f38e74ccfc 100644
--- a/OvmfPkg/Bhyve/PlatformPei/Platform.c
+++ b/OvmfPkg/Bhyve/PlatformPei/Platform.c
@@ -191,7 +191,9 @@ MemMapInitialization (
ASSERT (PciExBarBase <= MAX_UINT32 - SIZE_256MB);
PciBase = (UINT32)(PciExBarBase + SIZE_256MB);
} else {
- PciBase = (TopOfLowRam < BASE_2GB) ? BASE_2GB : TopOfLowRam;
+ PciBase = PcdGet64(PcdPciMmio32Base);
+ if (PciBase == 0)
+ PciBase = (TopOfLowRam < BASE_2GB) ? BASE_2GB : TopOfLowRam;
}
//
--
2.11.0
Beckhoff Automation GmbH & Co. KG | Managing Director: Dipl. Phys. Hans Beckhoff
Registered office: Verl, Germany | Register court: Guetersloh HRA 7075
prev parent reply other threads:[~2021-06-24 6:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 6:05 [PATCH v2 0/2] Prepare bhyve for GPU-Passthrough Corvin Köhne
2021-06-24 6:05 ` [PATCH v2 1/2] OvmfPkg/Bhyve: add USB support Corvin Köhne
2021-06-29 3:14 ` Peter Grehan
2021-07-01 9:51 ` Corvin Köhne
2021-07-01 10:32 ` [edk2-devel] " Peter Grehan
2021-07-01 14:12 ` Michael Brown
2021-07-01 23:31 ` Peter Grehan
2021-07-02 12:21 ` Michael Brown
2021-07-02 13:55 ` Peter Grehan
2021-06-24 6:05 ` Corvin Köhne [this message]
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