1 // SPDX-License-Identifier: GPL-2.0
17 #include <linux/fpga-dfl.h>
20 #include "dfl-afu.h"
30 /* mask or unmask port errors by the error mask register. */
31 static void __afu_port_err_mask(struct device *dev, bool mask)  in __afu_port_err_mask()  argument
37 	writeq(mask ? ERROR_MASK : 0, base + PORT_ERROR_MASK);  in __afu_port_err_mask()
40 static void afu_port_err_mask(struct device *dev, bool mask)  in afu_port_err_mask()  argument
44 	mutex_lock(&pdata->lock);  in afu_port_err_mask()
45 	__afu_port_err_mask(dev, mask);  in afu_port_err_mask()
46 	mutex_unlock(&pdata->lock);  in afu_port_err_mask()
55 	int ret = -EBUSY;  in afu_port_err_clear()
61 	mutex_lock(&pdata->lock);  in afu_port_err_clear()
66 	 * - Check for AP6 State  in afu_port_err_clear()
67 	 * - Halt Port by keeping Port in reset  in afu_port_err_clear()
68 	 * - Set PORT Error mask to all 1 to mask errors  in afu_port_err_clear()
69 	 * - Clear all errors  in afu_port_err_clear()
70 	 * - Set Port mask to all 0 to enable errors  in afu_port_err_clear()
71 	 * - All errors start capturing new errors  in afu_port_err_clear()
72 	 * - Enable Port by pulling the port out of reset  in afu_port_err_clear()
82 	/* Halt Port by keeping Port in reset */  in afu_port_err_clear()
87 	/* Mask all errors */  in afu_port_err_clear()
99 		ret = -EINVAL;  in afu_port_err_clear()
102 	/* Clear mask */  in afu_port_err_clear()
105 	/* Enable the Port by clear the reset */  in afu_port_err_clear()
109 	mutex_unlock(&pdata->lock);  in afu_port_err_clear()
122 	mutex_lock(&pdata->lock);  in errors_show()
124 	mutex_unlock(&pdata->lock);  in errors_show()
136 		return -EINVAL;  in errors_store()
153 	mutex_lock(&pdata->lock);  in first_error_show()
155 	mutex_unlock(&pdata->lock);  in first_error_show()
171 	mutex_lock(&pdata->lock);  in first_malformed_req_show()
174 	mutex_unlock(&pdata->lock);  in first_malformed_req_show()
200 	return attr->mode;  in port_err_attrs_visible()
212 	afu_port_err_mask(&pdev->dev, false);  in port_err_init()
220 	afu_port_err_mask(&pdev->dev, true);  in port_err_uinit()
233 		dev_dbg(&pdev->dev, "%x cmd not handled", cmd);  in port_err_ioctl()
234 		return -ENODEV;  in port_err_ioctl()