3  * CDX host controller driver for AMD versal-net platform.
11 #include <linux/cdx/cdx_bus.h>
14 #include "../cdx.h"
18 static unsigned int cdx_mcdi_rpc_timeout(struct cdx_mcdi *cdx, unsigned int cmd)  in cdx_mcdi_rpc_timeout()  argument
23 static void cdx_mcdi_request(struct cdx_mcdi *cdx,  in cdx_mcdi_request()  argument
27 	if (cdx_rpmsg_send(cdx, hdr, hdr_len, sdu, sdu_len))  in cdx_mcdi_request()
28 		dev_err(&cdx->rpdev->dev, "Failed to send rpmsg data\n");  in cdx_mcdi_request()
36 void cdx_rpmsg_post_probe(struct cdx_controller *cdx)  in cdx_rpmsg_post_probe()  argument
38 	/* Register CDX controller with CDX bus driver */  in cdx_rpmsg_post_probe()
39 	if (cdx_register_controller(cdx))  in cdx_rpmsg_post_probe()
40 		dev_err(cdx->dev, "Failed to register CDX controller\n");  in cdx_rpmsg_post_probe()
43 void cdx_rpmsg_pre_remove(struct cdx_controller *cdx)  in cdx_rpmsg_pre_remove()  argument
45 	cdx_unregister_controller(cdx);  in cdx_rpmsg_pre_remove()
46 	cdx_mcdi_wait_for_quiescence(cdx->priv, MCDI_RPC_TIMEOUT);  in cdx_rpmsg_pre_remove()
49 static int cdx_configure_device(struct cdx_controller *cdx,  in cdx_configure_device()  argument
57 		ret = cdx_mcdi_reset_device(cdx->priv, bus_num, dev_num);  in cdx_configure_device()
66 static int cdx_scan_devices(struct cdx_controller *cdx)  in cdx_scan_devices()  argument
68 	struct cdx_mcdi *cdx_mcdi = cdx->priv;  in cdx_scan_devices()
72 	/* MCDI FW Read: Fetch the number of CDX buses on this controller */  in cdx_scan_devices()
75 		dev_err(cdx->dev,  in cdx_scan_devices()
76 			"Get number of CDX buses failed: %d\n", ret);  in cdx_scan_devices()
87 			dev_err(cdx->dev,  in cdx_scan_devices()
88 				"Get devices on CDX bus %d failed: %d\n", bus_num, ret);  in cdx_scan_devices()
100 				dev_err(cdx->dev,  in cdx_scan_devices()
101 					"CDX device config get failed for %d(bus):%d(dev), %d\n",  in cdx_scan_devices()
105 			dev_params.cdx = cdx;  in cdx_scan_devices()
107 			/* Add the device to the cdx bus */  in cdx_scan_devices()
110 				dev_err(cdx->dev, "registering cdx dev: %d failed: %d\n",  in cdx_scan_devices()
115 			dev_dbg(cdx->dev, "CDX dev: %d on cdx bus: %d created\n",  in cdx_scan_devices()
130 	struct cdx_controller *cdx;  in xlnx_cdx_probe()  local
147 	cdx = kzalloc(sizeof(*cdx), GFP_KERNEL);  in xlnx_cdx_probe()
148 	if (!cdx) {  in xlnx_cdx_probe()
152 	platform_set_drvdata(pdev, cdx);  in xlnx_cdx_probe()
154 	cdx->dev = &pdev->dev;  in xlnx_cdx_probe()
155 	cdx->priv = cdx_mcdi;  in xlnx_cdx_probe()
156 	cdx->ops = &cdx_ops;  in xlnx_cdx_probe()
161 			dev_err(&pdev->dev, "Failed to register CDX RPMsg transport\n");  in xlnx_cdx_probe()
165 	dev_info(&pdev->dev, "Successfully registered CDX controller with RPMsg as transport\n");  in xlnx_cdx_probe()
169 	kfree(cdx);  in xlnx_cdx_probe()
180 	struct cdx_controller *cdx = platform_get_drvdata(pdev);  in xlnx_cdx_remove()  local
181 	struct cdx_mcdi *cdx_mcdi = cdx->priv;  in xlnx_cdx_remove()
185 	kfree(cdx);  in xlnx_cdx_remove()
194 	{.compatible = "xlnx,versal-net-cdx",},
202 		   .name = "cdx-controller",
230 MODULE_DESCRIPTION("CDX controller for AMD devices");