3  * CDX bus driver.
11  * CDX is a Hardware Architecture designed for AMD FPGA devices. It
19  * The diagram below shows an overview of the CDX architecture:
24  *          |                    CDX device drivers|
26  *          |                        CDX bus       |
28  *          |                     CDX controller   |
64 #include <linux/cdx/cdx_bus.h>
67 #include "cdx.h"
69 /* Default DMA mask for devices on a CDX bus */
73 /* CDX controllers registered with the CDX bus */
77  * cdx_dev_reset - Reset a CDX device
78  * @dev: CDX device
85 	struct cdx_controller *cdx = cdx_dev->cdx;  in cdx_dev_reset()  local
96 	ret = cdx->ops->dev_configure(cdx, cdx_dev->bus_num,  in cdx_dev_reset()
99 		dev_err(dev, "cdx device reset failed\n");  in cdx_dev_reset()
110  * cdx_unregister_device - Unregister a CDX device
111  * @dev: CDX device
138 	/* Reset all the devices attached to cdx bus */  in cdx_unregister_devices()
143  * cdx_match_one_device - Tell if a CDX device structure has a matching
144  *			  CDX device id structure
145  * @id: single CDX device id structure to match
146  * @dev: the CDX device structure to match against
162  * cdx_match_id - See if a CDX device matches a given cdx_id table
163  * @ids: array of CDX device ID structures to search in
164  * @dev: the CDX device structure to match against.
166  * Used by a driver to check whether a CDX device is in its list of
187  * @dev: the cdx device to match against
188  * @drv: the device driver to search for matching cdx device
390 	struct cdx_controller *cdx;  in rescan_store()  local
404 	xa_for_each(&cdx_controllers, index, cdx) {  in rescan_store()
407 		ret = cdx->ops->scan(cdx);  in rescan_store()
409 			dev_err(cdx->dev, "cdx bus scanning failed\n");  in rescan_store()
423 	.name		= "cdx",
469 	struct cdx_controller *cdx = dev_params->cdx;  in cdx_device_add()  local
470 	struct device *parent = cdx->dev;  in cdx_device_add()
483 	/* Populate CDX dev params */  in cdx_device_add()
489 	cdx_dev->cdx = dev_params->cdx;  in cdx_device_add()
500 	dev_set_name(&cdx_dev->dev, "cdx-%02x:%02x",  in cdx_device_add()
501 		     ((cdx->id << CDX_CONTROLLER_ID_SHIFT) | (cdx_dev->bus_num & CDX_BUS_NUM_MASK)),  in cdx_device_add()
507 			"cdx device add failed: %d", ret);  in cdx_device_add()
523 int cdx_register_controller(struct cdx_controller *cdx)  in cdx_register_controller()  argument
527 	ret = xa_alloc(&cdx_controllers, &cdx->id, cdx,  in cdx_register_controller()
530 		dev_err(cdx->dev,  in cdx_register_controller()
532 		cdx->id = (u8)MAX_CDX_CONTROLLERS;  in cdx_register_controller()
537 	cdx->ops->scan(cdx);  in cdx_register_controller()
543 void cdx_unregister_controller(struct cdx_controller *cdx)  in cdx_unregister_controller()  argument
545 	if (cdx->id >= MAX_CDX_CONTROLLERS)  in cdx_unregister_controller()
548 	device_for_each_child(cdx->dev, NULL, cdx_unregister_device);  in cdx_unregister_controller()
549 	xa_erase(&cdx_controllers, cdx->id);  in cdx_unregister_controller()