virt/nitro_enclaves/ne_pci_dev.c

39  * @pdev:		PCI device to send the command to.
46 static void ne_submit_request(struct pci_dev *pdev, enum ne_pci_dev_cmd_type cmd_type,
49 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
58  * @pdev:		PCI device to receive the reply from.
64 static void ne_retrieve_reply(struct pci_dev *pdev, struct ne_pci_dev_cmd_reply *cmd_reply,
67 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
74  * @pdev:	PCI device for which a reply is waited.
81 static int ne_wait_for_reply(struct pci_dev *pdev)
83 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
99 int ne_do_request(struct pci_dev *pdev, enum ne_pci_dev_cmd_type cmd_type,
103 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
107 		dev_err_ratelimited(&pdev->dev, "Invalid cmd type=%u\n", cmd_type);
113 		dev_err_ratelimited(&pdev->dev, "Null cmd request for cmd type=%u\n",
120 		dev_err_ratelimited(&pdev->dev, "Invalid req size=%zu for cmd type=%u\n",
127 		dev_err_ratelimited(&pdev->dev, "Null cmd reply for cmd type=%u\n",
134 		dev_err_ratelimited(&pdev->dev, "Invalid reply size=%zu for cmd type=%u\n",
148 	ne_submit_request(pdev, cmd_type, cmd_request, cmd_request_size);
150 	rc = ne_wait_for_reply(pdev);
152 		dev_err_ratelimited(&pdev->dev, "Error in wait for reply for cmd type=%u [rc=%d]\n",
158 	ne_retrieve_reply(pdev, cmd_reply, cmd_reply_size);
165 		dev_err_ratelimited(&pdev->dev, "Error in cmd process logic, cmd type=%u [rc=%d]\n",
220 	struct pci_dev *pdev = ne_pci_dev->pdev;
243 		rc = ne_do_request(pdev, SLOT_INFO,
247 			dev_err(&pdev->dev, "Error in slot info [rc=%d]\n", rc);
288  * @pdev:	PCI device to setup the MSI-X for.
295 static int ne_setup_msix(struct pci_dev *pdev)
297 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
301 	nr_vecs = pci_msix_vec_count(pdev);
305 		dev_err(&pdev->dev, "Error in getting vec count [rc=%d]\n", rc);
310 	rc = pci_alloc_irq_vectors(pdev, nr_vecs, nr_vecs, PCI_IRQ_MSIX);
312 		dev_err(&pdev->dev, "Error in alloc MSI-X vecs [rc=%d]\n", rc);
322 	rc = request_irq(pci_irq_vector(pdev, NE_VEC_REPLY), ne_reply_handler,
325 		dev_err(&pdev->dev, "Error in request irq reply [rc=%d]\n", rc);
334 		dev_err(&pdev->dev, "Cannot get wq for dev events [rc=%d]\n", rc);
346 	rc = request_irq(pci_irq_vector(pdev, NE_VEC_EVENT), ne_event_handler,
349 		dev_err(&pdev->dev, "Error in request irq event [rc=%d]\n", rc);
359 	free_irq(pci_irq_vector(pdev, NE_VEC_REPLY), ne_pci_dev);
361 	pci_free_irq_vectors(pdev);
368  * @pdev:	PCI device to teardown the MSI-X for.
372 static void ne_teardown_msix(struct pci_dev *pdev)
374 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
376 	free_irq(pci_irq_vector(pdev, NE_VEC_EVENT), ne_pci_dev);
381 	free_irq(pci_irq_vector(pdev, NE_VEC_REPLY), ne_pci_dev);
383 	pci_free_irq_vectors(pdev);
388  * @pdev:	PCI device to select version for and then enable.
395 static int ne_pci_dev_enable(struct pci_dev *pdev)
399 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
405 		dev_err(&pdev->dev, "Error in pci dev version cmd\n");
414 		dev_err(&pdev->dev, "Error in pci dev enable cmd\n");
424  * @pdev:	PCI device to disable.
428 static void ne_pci_dev_disable(struct pci_dev *pdev)
431 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
453 		dev_err(&pdev->dev, "Error in pci dev disable cmd\n");
458  * @pdev:	PCI device to match with the NE PCI driver.
466 static int ne_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
475 	rc = pci_enable_device(pdev);
477 		dev_err(&pdev->dev, "Error in pci dev enable [rc=%d]\n", rc);
482 	pci_set_master(pdev);
484 	rc = pci_request_regions_exclusive(pdev, "nitro_enclaves");
486 		dev_err(&pdev->dev, "Error in pci request regions [rc=%d]\n", rc);
491 	ne_pci_dev->iomem_base = pci_iomap(pdev, PCI_BAR_NE, 0);
495 		dev_err(&pdev->dev, "Error in pci iomap [rc=%d]\n", rc);
500 	pci_set_drvdata(pdev, ne_pci_dev);
502 	rc = ne_setup_msix(pdev);
504 		dev_err(&pdev->dev, "Error in pci dev msix setup [rc=%d]\n", rc);
509 	ne_pci_dev_disable(pdev);
511 	rc = ne_pci_dev_enable(pdev);
513 		dev_err(&pdev->dev, "Error in ne_pci_dev enable [rc=%d]\n", rc);
523 	ne_pci_dev->pdev = pdev;
529 		dev_err(&pdev->dev, "Error in misc dev register [rc=%d]\n", rc);
538 	ne_pci_dev_disable(pdev);
540 	ne_teardown_msix(pdev);
542 	pci_set_drvdata(pdev, NULL);
543 	pci_iounmap(pdev, ne_pci_dev->iomem_base);
545 	pci_release_regions(pdev);
547 	pci_disable_device(pdev);
556  * @pdev:	PCI device associated with the NE PCI driver.
560 static void ne_pci_remove(struct pci_dev *pdev)
562 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
568 	ne_pci_dev_disable(pdev);
570 	ne_teardown_msix(pdev);
572 	pci_set_drvdata(pdev, NULL);
574 	pci_iounmap(pdev, ne_pci_dev->iomem_base);
576 	pci_release_regions(pdev);
578 	pci_disable_device(pdev);
585  * @pdev:	PCI device associated with the NE PCI driver.
589 static void ne_pci_shutdown(struct pci_dev *pdev)
591 	struct ne_pci_dev *ne_pci_dev = pci_get_drvdata(pdev);
600 	ne_pci_dev_disable(pdev);
602 	ne_teardown_msix(pdev);
604 	pci_set_drvdata(pdev, NULL);
606 	pci_iounmap(pdev, ne_pci_dev->iomem_base);
608 	pci_release_regions(pdev);
610 	pci_disable_device(pdev);