3  * CDX host controller driver for AMD versal-net platform.
11 #include <linux/cdx/cdx_bus.h>
15 #include "../cdx.h"
19 static unsigned int cdx_mcdi_rpc_timeout(struct cdx_mcdi *cdx, unsigned int cmd)  in cdx_mcdi_rpc_timeout()  argument
24 static void cdx_mcdi_request(struct cdx_mcdi *cdx,  in cdx_mcdi_request()  argument
28 	if (cdx_rpmsg_send(cdx, hdr, hdr_len, sdu, sdu_len))  in cdx_mcdi_request()
29 		dev_err(&cdx->rpdev->dev, "Failed to send rpmsg data\n");  in cdx_mcdi_request()
37 static int cdx_bus_enable(struct cdx_controller *cdx, u8 bus_num)  in cdx_bus_enable()  argument
39 	return cdx_mcdi_bus_enable(cdx->priv, bus_num);  in cdx_bus_enable()
42 static int cdx_bus_disable(struct cdx_controller *cdx, u8 bus_num)  in cdx_bus_disable()  argument
44 	return cdx_mcdi_bus_disable(cdx->priv, bus_num);  in cdx_bus_disable()
47 void cdx_rpmsg_post_probe(struct cdx_controller *cdx)  in cdx_rpmsg_post_probe()  argument
49 	/* Register CDX controller with CDX bus driver */  in cdx_rpmsg_post_probe()
50 	if (cdx_register_controller(cdx))  in cdx_rpmsg_post_probe()
51 		dev_err(cdx->dev, "Failed to register CDX controller\n");  in cdx_rpmsg_post_probe()
54 void cdx_rpmsg_pre_remove(struct cdx_controller *cdx)  in cdx_rpmsg_pre_remove()  argument
56 	cdx_unregister_controller(cdx);  in cdx_rpmsg_pre_remove()
57 	cdx_mcdi_wait_for_quiescence(cdx->priv, MCDI_RPC_TIMEOUT);  in cdx_rpmsg_pre_remove()
60 static int cdx_configure_device(struct cdx_controller *cdx,  in cdx_configure_device()  argument
75 		ret = cdx_mcdi_write_msi(cdx->priv, bus_num, dev_num, msi_index, addr, data);  in cdx_configure_device()
78 		ret = cdx_mcdi_reset_device(cdx->priv, bus_num, dev_num);  in cdx_configure_device()
81 		ret = cdx_mcdi_bus_master_enable(cdx->priv, bus_num, dev_num,  in cdx_configure_device()
85 		ret = cdx_mcdi_msi_enable(cdx->priv, bus_num, dev_num, dev_config->msi_enable);  in cdx_configure_device()
94 static int cdx_scan_devices(struct cdx_controller *cdx)  in cdx_scan_devices()  argument
96 	struct cdx_mcdi *cdx_mcdi = cdx->priv;  in cdx_scan_devices()
100 	/* MCDI FW Read: Fetch the number of CDX buses on this controller */  in cdx_scan_devices()
103 		dev_err(cdx->dev,  in cdx_scan_devices()
104 			"Get number of CDX buses failed: %d\n", ret);  in cdx_scan_devices()
113 		/* Add the bus on cdx subsystem */  in cdx_scan_devices()
114 		bus_dev = cdx_bus_add(cdx, bus_num);  in cdx_scan_devices()
121 			dev_err(cdx->dev,  in cdx_scan_devices()
122 				"Get devices on CDX bus %d failed: %d\n", bus_num, ret);  in cdx_scan_devices()
134 				dev_err(cdx->dev,  in cdx_scan_devices()
135 					"CDX device config get failed for %d(bus):%d(dev), %d\n",  in cdx_scan_devices()
139 			dev_params.cdx = cdx;  in cdx_scan_devices()
142 			/* Add the device to the cdx bus */  in cdx_scan_devices()
145 				dev_err(cdx->dev, "registering cdx dev: %d failed: %d\n",  in cdx_scan_devices()
150 			dev_dbg(cdx->dev, "CDX dev: %d on cdx bus: %d created\n",  in cdx_scan_devices()
167 	struct cdx_controller *cdx;  in xlnx_cdx_probe()  local
184 	cdx = kzalloc(sizeof(*cdx), GFP_KERNEL);  in xlnx_cdx_probe()
185 	if (!cdx) {  in xlnx_cdx_probe()
189 	platform_set_drvdata(pdev, cdx);  in xlnx_cdx_probe()
191 	cdx->dev = &pdev->dev;  in xlnx_cdx_probe()
192 	cdx->priv = cdx_mcdi;  in xlnx_cdx_probe()
193 	cdx->ops = &cdx_ops;  in xlnx_cdx_probe()
196 	cdx->msi_domain = cdx_msi_domain_init(&pdev->dev);  in xlnx_cdx_probe()
197 	if (!cdx->msi_domain) {  in xlnx_cdx_probe()
206 			dev_err(&pdev->dev, "Failed to register CDX RPMsg transport\n");  in xlnx_cdx_probe()
210 	dev_info(&pdev->dev, "Successfully registered CDX controller with RPMsg as transport\n");  in xlnx_cdx_probe()
214 	irq_domain_remove(cdx->msi_domain);  in xlnx_cdx_probe()
216 	kfree(cdx);  in xlnx_cdx_probe()
227 	struct cdx_controller *cdx = platform_get_drvdata(pdev);  in xlnx_cdx_remove()  local
228 	struct cdx_mcdi *cdx_mcdi = cdx->priv;  in xlnx_cdx_remove()
232 	irq_domain_remove(cdx->msi_domain);  in xlnx_cdx_remove()
233 	kfree(cdx);  in xlnx_cdx_remove()
240 	{.compatible = "xlnx,versal-net-cdx",},
248 		   .name = "cdx-controller",
276 MODULE_DESCRIPTION("CDX controller for AMD devices");