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[PATCH v1 1/3] xen/vpci: add vpci_hw_read8 helper
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Date: Thu, 10 Aug 2023 15:12:57 -0400
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- Cc: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Thu, 10 Aug 2023 19:13:56 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
This will be used in a subsequent patch.
Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
---
xen/drivers/vpci/vpci.c | 6 ++++++
xen/include/xen/vpci.h | 2 ++
2 files changed, 8 insertions(+)
diff --git a/xen/drivers/vpci/vpci.c b/xen/drivers/vpci/vpci.c
index d73fa7630237..acadba1fd6c5 100644
--- a/xen/drivers/vpci/vpci.c
+++ b/xen/drivers/vpci/vpci.c
@@ -133,6 +133,12 @@ static void cf_check vpci_ignored_write(
{
}
+uint32_t cf_check vpci_hw_read8(
+ const struct pci_dev *pdev, unsigned int reg, void *data)
+{
+ return pci_conf_read8(pdev->sbdf, reg);
+}
+
uint32_t cf_check vpci_hw_read16(
const struct pci_dev *pdev, unsigned int reg, void *data)
{
diff --git a/xen/include/xen/vpci.h b/xen/include/xen/vpci.h
index 0b8a2a3c745b..ee7a8fcdee83 100644
--- a/xen/include/xen/vpci.h
+++ b/xen/include/xen/vpci.h
@@ -46,6 +46,8 @@ void vpci_write(pci_sbdf_t sbdf, unsigned int reg, unsigned
int size,
uint32_t data);
/* Passthrough handlers. */
+uint32_t cf_check vpci_hw_read8(
+ const struct pci_dev *pdev, unsigned int reg, void *data);
uint32_t cf_check vpci_hw_read16(
const struct pci_dev *pdev, unsigned int reg, void *data);
uint32_t cf_check vpci_hw_read32(
--
2.41.0
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