Merging upstream version 6.9.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 154 insertions, 2 deletions

diff --git a/drivers/cdx/controller/Kconfig b/drivers/cdx/controller/Kconfig
index 61bf17fbe4..f8e729761a 100644
--- a/drivers/cdx/controller/Kconfig
+++ b/drivers/cdx/controller/Kconfig
@@ -9,6 +9,7 @@ if CDX_BUS
 
 config CDX_CONTROLLER
 	tristate "CDX bus controller"
+	select GENERIC_MSI_IRQ
 	select REMOTEPROC
 	select RPMSG
 	help
diff --git a/drivers/cdx/controller/cdx_controller.c b/drivers/cdx/controller/cdx_controller.c
index 85fe4b1c4e..112a1541de 100644
--- a/drivers/cdx/controller/cdx_controller.c
+++ b/drivers/cdx/controller/cdx_controller.c
@@ -9,6 +9,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/cdx/cdx_bus.h>
+#include <linux/irqdomain.h>
 
 #include "cdx_controller.h"
 #include "../cdx.h"
@@ -60,9 +61,19 @@ static int cdx_configure_device(struct cdx_controller *cdx,
 				u8 bus_num, u8 dev_num,
 				struct cdx_device_config *dev_config)
 {
+	u16 msi_index;
 	int ret = 0;
+	u32 data;
+	u64 addr;
 
 	switch (dev_config->type) {
+	case CDX_DEV_MSI_CONF:
+		msi_index = dev_config->msi.msi_index;
+		data = dev_config->msi.data;
+		addr = dev_config->msi.addr;
+
+		ret = cdx_mcdi_write_msi(cdx->priv, bus_num, dev_num, msi_index, addr, data);
+		break;
 	case CDX_DEV_RESET_CONF:
 		ret = cdx_mcdi_reset_device(cdx->priv, bus_num, dev_num);
 		break;
@@ -70,6 +81,9 @@ static int cdx_configure_device(struct cdx_controller *cdx,
 		ret = cdx_mcdi_bus_master_enable(cdx->priv, bus_num, dev_num,
 						 dev_config->bus_master_enable);
 		break;
+	case CDX_DEV_MSI_ENABLE:
+		ret = cdx_mcdi_msi_enable(cdx->priv, bus_num, dev_num, dev_config->msi_enable);
+		break;
 	default:
 		ret = -EINVAL;
 	}
@@ -178,6 +192,14 @@ static int xlnx_cdx_probe(struct platform_device *pdev)
 	cdx->priv = cdx_mcdi;
 	cdx->ops = &cdx_ops;
 
+	/* Create MSI domain */
+	cdx->msi_domain = cdx_msi_domain_init(&pdev->dev);
+	if (!cdx->msi_domain) {
+		dev_err(&pdev->dev, "cdx_msi_domain_init() failed");
+		ret = -ENODEV;
+		goto cdx_msi_fail;
+	}
+
 	ret = cdx_setup_rpmsg(pdev);
 	if (ret) {
 		if (ret != -EPROBE_DEFER)
@@ -189,6 +211,8 @@ static int xlnx_cdx_probe(struct platform_device *pdev)
 	return 0;
 
 cdx_rpmsg_fail:
+	irq_domain_remove(cdx->msi_domain);
+cdx_msi_fail:
 	kfree(cdx);
 cdx_alloc_fail:
 	cdx_mcdi_finish(cdx_mcdi);
@@ -205,6 +229,7 @@ static int xlnx_cdx_remove(struct platform_device *pdev)
 
 	cdx_destroy_rpmsg(pdev);
 
+	irq_domain_remove(cdx->msi_domain);
 	kfree(cdx);
 
 	cdx_mcdi_finish(cdx_mcdi);
diff --git a/drivers/cdx/controller/mc_cdx_pcol.h b/drivers/cdx/controller/mc_cdx_pcol.h
index 2de019406b..832a44af96 100644
--- a/drivers/cdx/controller/mc_cdx_pcol.h
+++ b/drivers/cdx/controller/mc_cdx_pcol.h
@@ -455,6 +455,12 @@
 #define MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_REQUESTER_ID_OFST			84
 #define MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_REQUESTER_ID_LEN			4
 
+/* MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2 msgresponse */
+#define MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_LEN				92
+/* Requester ID used by device for GIC ITS DeviceID */
+#define MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_REQUESTER_DEVICE_ID_OFST	88
+#define MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_REQUESTER_DEVICE_ID_LEN		4
+
 /***********************************/
 /*
  * MC_CMD_CDX_BUS_DOWN
@@ -617,6 +623,64 @@
 #define MC_CMD_CDX_DEVICE_CONTROL_GET_OUT_MMIO_REGIONS_ENABLE_WIDTH	1
 
 /***********************************/
+/*
+ * MC_CMD_CDX_DEVICE_WRITE_MSI_MSG
+ * Populates the MSI message to be used by the hardware to raise the specified
+ * interrupt vector. Versal-net implementation specific limitations are that
+ * only 4 CDX devices with MSI interrupt capability are supported and all
+ * vectors within a device must use the same write address. The command will
+ * return EINVAL if any of these limitations is violated.
+ */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG					0x9
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_MSGSET				0x9
+#undef MC_CMD_0x9_PRIVILEGE_CTG
+
+#define MC_CMD_0x9_PRIVILEGE_CTG SRIOV_CTG_ADMIN
+
+/* MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN msgrequest */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_LEN				28
+/* Device bus number, in range 0 to BUS_COUNT-1 */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_BUS_OFST			0
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_BUS_LEN			4
+/* Device number relative to the bus, in range 0 to DEVICE_COUNT-1 for that bus */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_DEVICE_OFST			4
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_DEVICE_LEN			4
+/*
+ * Device-relative MSI vector number. Must be < MSI_COUNT reported for the
+ * device.
+ */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_VECTOR_OFST		8
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_VECTOR_LEN		4
+/* Reserved (alignment) */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_RESERVED_OFST		12
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_RESERVED_LEN			4
+/*
+ * 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.
+ */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_OFST		16
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_LEN		8
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_LO_OFST		16
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_LO_LEN		4
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_LO_LBN		128
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_LO_WIDTH		32
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_HI_OFST		20
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_HI_LEN		4
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_HI_LBN		160
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS_HI_WIDTH		32
+/*
+ * 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.
+ */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_DATA_OFST		24
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_DATA_LEN			4
+
+/* MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_OUT msgresponse */
+#define MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_OUT_LEN				0
+
+/***********************************/
 /* MC_CMD_V2_EXTN - Encapsulation for a v2 extended command */
 #define MC_CMD_V2_EXTN					0x7f
 
diff --git a/drivers/cdx/controller/mcdi_functions.c b/drivers/cdx/controller/mcdi_functions.c
index b1f5309463..885c69e6eb 100644
--- a/drivers/cdx/controller/mcdi_functions.c
+++ b/drivers/cdx/controller/mcdi_functions.c
@@ -49,7 +49,7 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 			    u8 bus_num, u8 dev_num,
 			    struct cdx_dev_params *dev_params)
 {
-	MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_LEN);
+	MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_LEN);
 	MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_IN_LEN);
 	struct resource *res = &dev_params->res[0];
 	size_t outlen;
@@ -64,7 +64,7 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 	if (ret)
 		return ret;
 
-	if (outlen != MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_LEN)
+	if (outlen != MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_LEN)
 		return -EIO;
 
 	dev_params->bus_num = bus_num;
@@ -73,6 +73,9 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 	req_id = MCDI_DWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_REQUESTER_ID);
 	dev_params->req_id = req_id;
 
+	dev_params->msi_dev_id = MCDI_DWORD(outbuf,
+					    CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_REQUESTER_DEVICE_ID);
+
 	dev_params->res_count = 0;
 	if (MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION0_SIZE) != 0) {
 		res[dev_params->res_count].start =
@@ -127,6 +130,7 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 	dev_params->class = MCDI_DWORD(outbuf,
 				       CDX_BUS_GET_DEVICE_CONFIG_OUT_DEVICE_CLASS) & 0xFFFFFF;
 	dev_params->revision = MCDI_BYTE(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_DEVICE_REVISION);
+	dev_params->num_msi = MCDI_DWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MSI_COUNT);
 
 	return 0;
 }
@@ -155,6 +159,24 @@ int cdx_mcdi_bus_disable(struct cdx_mcdi *cdx, u8 bus_num)
 	return ret;
 }
 
+int cdx_mcdi_write_msi(struct cdx_mcdi *cdx, u8 bus_num, u8 dev_num,
+		       u32 msi_vector, u64 msi_address, u32 msi_data)
+{
+	MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_LEN);
+	int ret;
+
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_BUS, bus_num);
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_DEVICE, dev_num);
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_VECTOR, msi_vector);
+	MCDI_SET_QWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS, msi_address);
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_DATA, msi_data);
+
+	ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_DEVICE_WRITE_MSI_MSG, inbuf, sizeof(inbuf),
+			   NULL, 0, NULL);
+
+	return ret;
+}
+
 int cdx_mcdi_reset_device(struct cdx_mcdi *cdx, u8 bus_num, u8 dev_num)
 {
 	MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_DEVICE_RESET_IN_LEN);
@@ -226,3 +248,10 @@ int cdx_mcdi_bus_master_enable(struct cdx_mcdi *cdx, u8 bus_num,
 	return cdx_mcdi_ctrl_flag_set(cdx, bus_num, dev_num, enable,
 			MC_CMD_CDX_DEVICE_CONTROL_SET_IN_BUS_MASTER_ENABLE_LBN);
 }
+
+int cdx_mcdi_msi_enable(struct cdx_mcdi *cdx, u8 bus_num,
+			u8 dev_num, bool enable)
+{
+	return cdx_mcdi_ctrl_flag_set(cdx, bus_num, dev_num, enable,
+			MC_CMD_CDX_DEVICE_CONTROL_SET_IN_MSI_ENABLE_LBN);
+}
diff --git a/drivers/cdx/controller/mcdi_functions.h b/drivers/cdx/controller/mcdi_functions.h
index 258a5462fb..b9942affdc 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 */