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path: root/drivers/cdx/controller/mcdi_functions.h
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Diffstat (limited to 'drivers/cdx/controller/mcdi_functions.h')
-rw-r--r--drivers/cdx/controller/mcdi_functions.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/cdx/controller/mcdi_functions.h b/drivers/cdx/controller/mcdi_functions.h
index 258a5462fbe3..b9942affdc6b 100644
--- a/drivers/cdx/controller/mcdi_functions.h
+++ b/drivers/cdx/controller/mcdi_functions.h
@@ -66,6 +66,26 @@ int cdx_mcdi_bus_enable(struct cdx_mcdi *cdx, u8 bus_num);
int cdx_mcdi_bus_disable(struct cdx_mcdi *cdx, u8 bus_num);
/**
+ * cdx_mcdi_write_msi - Write MSI configuration for CDX device
+ * @cdx: pointer to MCDI interface.
+ * @bus_num: Bus number.
+ * @dev_num: Device number.
+ * @msi_vector: Device-relative MSI vector number.
+ * Must be < MSI_COUNT reported for the device.
+ * @msi_address: MSI address to be used by the hardware. Typically, on ARM
+ * systems this address is translated by the IOMMU (if enabled) and
+ * it is the responsibility of the entity managing the IOMMU (APU kernel)
+ * to supply the correct IOVA here.
+ * @msi_data: MSI data to be used by the hardware. On versal-net, only the
+ * lower 16-bits are used, the remaining bits are ignored and should be
+ * set to zero.
+ *
+ * Return: 0 on success, <0 on failure
+ */
+int cdx_mcdi_write_msi(struct cdx_mcdi *cdx, u8 bus_num, u8 dev_num,
+ u32 msi_vector, u64 msi_address, u32 msi_data);
+
+/**
* cdx_mcdi_reset_device - Reset cdx device represented by bus_num:dev_num
* @cdx: pointer to MCDI interface.
* @bus_num: Bus number.
@@ -89,4 +109,17 @@ int cdx_mcdi_reset_device(struct cdx_mcdi *cdx,
int cdx_mcdi_bus_master_enable(struct cdx_mcdi *cdx, u8 bus_num,
u8 dev_num, bool enable);
+/**
+ * cdx_mcdi_msi_enable - Enable/Disable MSIs for cdx device represented
+ * by bus_num:dev_num
+ * @cdx: pointer to MCDI interface.
+ * @bus_num: Bus number.
+ * @dev_num: Device number.
+ * @enable: Enable msi's if set, disable otherwise.
+ *
+ * Return: 0 on success, <0 on failure
+ */
+int cdx_mcdi_msi_enable(struct cdx_mcdi *cdx, u8 bus_num,
+ u8 dev_num, bool enable);
+
#endif /* CDX_MCDI_FUNCTIONS_H */