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hw/pci: PCIe Data Object Exchange emulation

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Emulation of PCIe Data Object Exchange (DOE)
PCIE Base Specification r6.0 6.3 Data Object Exchange

Supports multiple DOE PCIe Extended Capabilities for a single PCIe
device. For each capability, a static array of DOEProtocol should be passed
to pcie_doe_init(). The protocols in that array will be registered under
the DOE capability structure. For each protocol, vendor ID, type, and
corresponding callback function (handle_request()) should be implemented.
This callback function represents how the DOE request for corresponding
protocol will be handled.

pcie_doe_{read/write}_config() must be appended to corresponding PCI
device's config_read/write() handler to enable DOE access. In
pcie_doe_read_config(), false will be returned if pci_config_read()
offset is not within DOE capability range. In pcie_doe_write_config(),
the function will have no affect if the address is not within the related
DOE PCIE extended capability.

Signed-off-by: Huai-Cheng Kuo <hchkuo@avery-design.com.tw>
Signed-off-by: Chris Browy <cbrowy@avery-design.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20221014151045.24781-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Huai-Cheng Kuo 2022-10-14 16:10:41 +01:00 • committed by Michael S. Tsirkin
parent 535824f596
commit 5fb52f6cc8
7 changed files with 506 additions and 0 deletions
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1
include/hw/pci/pcie.h
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@ -26,6 +26,7 @@
#include "hw/pci/pcie_aer.h"
#include "hw/pci/pcie_sriov.h"
#include "hw/hotplug.h"
#include "hw/pci/pcie_doe.h"
typedef enum {
/* for attention and power indicator */