1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (c) 2013-2020, Intel Corporation. All rights reserved.
24 #include "hw-txe.h"
43  * mei_txe_probe - Device Initialization Routine
60 		dev_err(&pdev->dev, "failed to enable pci device.\n");  in mei_txe_probe()
68 		dev_err(&pdev->dev, "failed to get pci regions.\n");  in mei_txe_probe()
72 	err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(36));  in mei_txe_probe()
74 		err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));  in mei_txe_probe()
76 			dev_err(&pdev->dev, "No suitable DMA available.\n");  in mei_txe_probe()
84 		err = -ENOMEM;  in mei_txe_probe()
88 	hw->mem_addr = pcim_iomap_table(pdev);  in mei_txe_probe()
97 		err = request_threaded_irq(pdev->irq,  in mei_txe_probe()
102 		err = request_threaded_irq(pdev->irq,  in mei_txe_probe()
107 		dev_err(&pdev->dev, "mei: request_threaded_irq failure. irq = %d\n",  in mei_txe_probe()
108 			pdev->irq);  in mei_txe_probe()
113 		dev_err(&pdev->dev, "init hw failure.\n");  in mei_txe_probe()
114 		err = -ENODEV;  in mei_txe_probe()
118 	pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_TXI_RPM_TIMEOUT);  in mei_txe_probe()
119 	pm_runtime_use_autosuspend(&pdev->dev);  in mei_txe_probe()
121 	err = mei_register(dev, &pdev->dev);  in mei_txe_probe()
131 	dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NO_DIRECT_COMPLETE);  in mei_txe_probe()
138 	 * power gating. To get around PCI device native runtime pm,  in mei_txe_probe()
139 	 * TXE uses runtime pm domain handlers which take precedence.  in mei_txe_probe()
143 	pm_runtime_put_noidle(&pdev->dev);  in mei_txe_probe()
152 	free_irq(pdev->irq, dev);  in mei_txe_probe()
154 	dev_err(&pdev->dev, "initialization failed.\n");  in mei_txe_probe()
159  * mei_txe_shutdown- Device Shutdown Routine
175 	dev_dbg(&pdev->dev, "shutdown\n");  in mei_txe_shutdown()
181 	free_irq(pdev->irq, dev);  in mei_txe_shutdown()
185  * mei_txe_remove - Device Removal Routine
198 		dev_err(&pdev->dev, "mei: dev == NULL\n");  in mei_txe_remove()
202 	pm_runtime_get_noresume(&pdev->dev);  in mei_txe_remove()
209 	free_irq(pdev->irq, dev);  in mei_txe_remove()
222 		return -ENODEV;  in mei_txe_pci_suspend()
224 	dev_dbg(&pdev->dev, "suspend\n");  in mei_txe_pci_suspend()
230 	free_irq(pdev->irq, dev);  in mei_txe_pci_suspend()
244 		return -ENODEV;  in mei_txe_pci_resume()
252 		err = request_threaded_irq(pdev->irq,  in mei_txe_pci_resume()
257 		err = request_threaded_irq(pdev->irq,  in mei_txe_pci_resume()
262 		dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n",  in mei_txe_pci_resume()
263 				pdev->irq);  in mei_txe_pci_resume()
282 		return -ENODEV;  in mei_txe_pm_runtime_idle()
286 	return -EBUSY;  in mei_txe_pm_runtime_idle()
297 		return -ENODEV;  in mei_txe_pm_runtime_suspend()
299 	mutex_lock(&dev->device_lock);  in mei_txe_pm_runtime_suspend()
304 		ret = -EAGAIN;  in mei_txe_pm_runtime_suspend()
310 	mutex_unlock(&dev->device_lock);  in mei_txe_pm_runtime_suspend()
312 	if (ret && ret != -EAGAIN)  in mei_txe_pm_runtime_suspend()
313 		schedule_work(&dev->reset_work);  in mei_txe_pm_runtime_suspend()
327 		return -ENODEV;  in mei_txe_pm_runtime_resume()
329 	mutex_lock(&dev->device_lock);  in mei_txe_pm_runtime_resume()
335 	mutex_unlock(&dev->device_lock);  in mei_txe_pm_runtime_resume()
340 		schedule_work(&dev->reset_work);  in mei_txe_pm_runtime_resume()
346  * mei_txe_set_pm_domain - fill and set pm domain structure for device
352 	struct pci_dev *pdev  = to_pci_dev(dev->dev);  in mei_txe_set_pm_domain()
354 	if (pdev->dev.bus && pdev->dev.bus->pm) {  in mei_txe_set_pm_domain()
355 		dev->pg_domain.ops = *pdev->dev.bus->pm;  in mei_txe_set_pm_domain()
357 		dev->pg_domain.ops.runtime_suspend = mei_txe_pm_runtime_suspend;  in mei_txe_set_pm_domain()
358 		dev->pg_domain.ops.runtime_resume = mei_txe_pm_runtime_resume;  in mei_txe_set_pm_domain()
359 		dev->pg_domain.ops.runtime_idle = mei_txe_pm_runtime_idle;  in mei_txe_set_pm_domain()
361 		dev_pm_domain_set(&pdev->dev, &dev->pg_domain);  in mei_txe_set_pm_domain()
366  * mei_txe_unset_pm_domain - clean pm domain structure for device
372 	/* stop using pm callbacks if any */  in mei_txe_unset_pm_domain()
373 	dev_pm_domain_set(dev->dev, NULL);  in mei_txe_unset_pm_domain()
399 	.driver.pm = MEI_TXE_PM_OPS,