1 /*-
5  * Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
30 #include <linux/device.h>
41 	struct device	*dev;
47 	unsigned int	irq;  member
51 lkpi_irq_rid(struct device *dev, unsigned int irq)  in lkpi_irq_rid()  argument
53 	/* check for MSI- or MSIX- interrupt */  in lkpi_irq_rid()
54 	if (irq >= dev->irq_start && irq < dev->irq_end)  in lkpi_irq_rid()
55 		return (irq - dev->irq_start + 1);  in lkpi_irq_rid()
61 lkpi_irq_ent(struct device *dev, unsigned int irq)  in lkpi_irq_ent()  argument
65 	list_for_each_entry(irqe, &dev->irqents, links)  in lkpi_irq_ent()
66 		if (irqe->irq == irq)  in lkpi_irq_ent()
81 	if (irqe->handler(irqe->irq, irqe->arg) == IRQ_WAKE_THREAD &&  in lkpi_irq_handler()
82 	    irqe->thread_handler != NULL) {  in lkpi_irq_handler()
84 		irqe->thread_handler(irqe->irq, irqe->arg);  in lkpi_irq_handler()
90 lkpi_irq_release(struct device *dev, struct irq_ent *irqe)  in lkpi_irq_release()
92 	if (irqe->tag != NULL)  in lkpi_irq_release()
93 		bus_teardown_intr(dev->bsddev, irqe->res, irqe->tag);  in lkpi_irq_release()
94 	if (irqe->res != NULL)  in lkpi_irq_release()
95 		bus_release_resource(dev->bsddev, SYS_RES_IRQ,  in lkpi_irq_release()
96 		    rman_get_rid(irqe->res), irqe->res);  in lkpi_irq_release()
97 	list_del(&irqe->links);  in lkpi_irq_release()
101 lkpi_devm_irq_release(struct device *dev, void *p)  in lkpi_devm_irq_release()
113 lkpi_request_irq(struct device *xdev, unsigned int irq,  in lkpi_request_irq()  argument
119 	struct device *dev;  in lkpi_request_irq()
124 	dev = lkpi_pci_find_irq_dev(irq);  in lkpi_request_irq()
126 		return -ENXIO;  in lkpi_request_irq()
128 		return -ENXIO;  in lkpi_request_irq()
129 	rid = lkpi_irq_rid(dev, irq);  in lkpi_request_irq()
133 	res = bus_alloc_resource_any(dev->bsddev, SYS_RES_IRQ, &rid, resflags);  in lkpi_request_irq()
135 		return (-ENXIO);  in lkpi_request_irq()
141 	irqe->dev = dev;  in lkpi_request_irq()
142 	irqe->res = res;  in lkpi_request_irq()
143 	irqe->arg = arg;  in lkpi_request_irq()
144 	irqe->handler = handler;  in lkpi_request_irq()
145 	irqe->thread_handler = thread_handler;  in lkpi_request_irq()
146 	irqe->irq = irq;  in lkpi_request_irq()
148 	error = bus_setup_intr(dev->bsddev, res, INTR_TYPE_NET | INTR_MPSAFE,  in lkpi_request_irq()
149 	    NULL, lkpi_irq_handler, irqe, &irqe->tag);  in lkpi_request_irq()
152 	list_add(&irqe->links, &dev->irqents);  in lkpi_request_irq()
159 	bus_release_resource(dev->bsddev, SYS_RES_IRQ, rid, irqe->res);  in lkpi_request_irq()
164 	return (-error);  in lkpi_request_irq()
168 lkpi_enable_irq(unsigned int irq)  in lkpi_enable_irq()  argument
171 	struct device *dev;  in lkpi_enable_irq()
173 	dev = lkpi_pci_find_irq_dev(irq);  in lkpi_enable_irq()
175 		return -EINVAL;  in lkpi_enable_irq()
176 	irqe = lkpi_irq_ent(dev, irq);  in lkpi_enable_irq()
177 	if (irqe == NULL || irqe->tag != NULL)  in lkpi_enable_irq()
178 		return -EINVAL;  in lkpi_enable_irq()
179 	return -bus_setup_intr(dev->bsddev, irqe->res, INTR_TYPE_NET | INTR_MPSAFE,  in lkpi_enable_irq()
180 	    NULL, lkpi_irq_handler, irqe, &irqe->tag);  in lkpi_enable_irq()
184 lkpi_disable_irq(unsigned int irq)  in lkpi_disable_irq()  argument
187 	struct device *dev;  in lkpi_disable_irq()
189 	dev = lkpi_pci_find_irq_dev(irq);  in lkpi_disable_irq()
192 	irqe = lkpi_irq_ent(dev, irq);  in lkpi_disable_irq()
195 	if (irqe->tag != NULL)  in lkpi_disable_irq()
196 		bus_teardown_intr(dev->bsddev, irqe->res, irqe->tag);  in lkpi_disable_irq()
197 	irqe->tag = NULL;  in lkpi_disable_irq()
201 lkpi_bind_irq_to_cpu(unsigned int irq, int cpu_id)  in lkpi_bind_irq_to_cpu()  argument
204 	struct device *dev;  in lkpi_bind_irq_to_cpu()
206 	dev = lkpi_pci_find_irq_dev(irq);  in lkpi_bind_irq_to_cpu()
208 		return (-ENOENT);  in lkpi_bind_irq_to_cpu()
210 	irqe = lkpi_irq_ent(dev, irq);  in lkpi_bind_irq_to_cpu()
212 		return (-ENOENT);  in lkpi_bind_irq_to_cpu()
214 	return (-bus_bind_intr(dev->bsddev, irqe->res, cpu_id));  in lkpi_bind_irq_to_cpu()
218 lkpi_free_irq(unsigned int irq, void *device __unused)  in lkpi_free_irq()  argument
221 	struct device *dev;  in lkpi_free_irq()
223 	dev = lkpi_pci_find_irq_dev(irq);  in lkpi_free_irq()
226 	irqe = lkpi_irq_ent(dev, irq);  in lkpi_free_irq()
234 lkpi_devm_free_irq(struct device *xdev, unsigned int irq, void *p __unused)  in lkpi_devm_free_irq()  argument
236 	struct device *dev;  in lkpi_devm_free_irq()
239 	dev = lkpi_pci_find_irq_dev(irq);  in lkpi_devm_free_irq()
244 	irqe = lkpi_irq_ent(dev, irq);  in lkpi_devm_free_irq()