dev/nvme/nvme_pci.c

47 static int nvme_ctrlr_setup_interrupts(struct nvme_controller *ctrlr);
117 	struct nvme_controller *ctrlr = DEVICE2SOFTC(device);
132 		ctrlr->quirks = ep->quirks;
152 nvme_ctrlr_allocate_bar(struct nvme_controller *ctrlr)
155 	ctrlr->resource_id = PCIR_BAR(0);
157 	ctrlr->resource = bus_alloc_resource_any(ctrlr->dev, SYS_RES_MEMORY,
158 	    &ctrlr->resource_id, RF_ACTIVE);
160 	if(ctrlr->resource == NULL) {
161 		nvme_printf(ctrlr, "unable to allocate pci resource\n");
165 	ctrlr->bus_tag = rman_get_bustag(ctrlr->resource);
166 	ctrlr->bus_handle = rman_get_bushandle(ctrlr->resource);
167 	ctrlr->regs = (struct nvme_registers *)ctrlr->bus_handle;
176 	ctrlr->bar4_resource_id = PCIR_BAR(4);
177 	ctrlr->bar4_resource = bus_alloc_resource_any(ctrlr->dev, SYS_RES_MEMORY,
178 	    &ctrlr->bar4_resource_id, RF_ACTIVE);
186 	struct nvme_controller*ctrlr = DEVICE2SOFTC(dev);
189 	ctrlr->dev = dev;
190 	status = nvme_ctrlr_allocate_bar(ctrlr);
194 	status = nvme_ctrlr_setup_interrupts(ctrlr);
199 	if (ctrlr->resource != NULL) {
201 		    ctrlr->resource_id, ctrlr->resource);
204 	if (ctrlr->bar4_resource != NULL) {
206 		    ctrlr->bar4_resource_id, ctrlr->bar4_resource);
209 	if (ctrlr->tag)
210 		bus_teardown_intr(dev, ctrlr->res, ctrlr->tag);
212 	if (ctrlr->res)
214 		    rman_get_rid(ctrlr->res), ctrlr->res);
216 	if (ctrlr->msi_count > 0)
225 	struct nvme_controller*ctrlr = DEVICE2SOFTC(dev);
229 	if (ctrlr->msi_count > 0)
236 nvme_ctrlr_setup_shared(struct nvme_controller *ctrlr, int rid)
240 	ctrlr->num_io_queues = 1;
241 	ctrlr->rid = rid;
242 	ctrlr->res = bus_alloc_resource_any(ctrlr->dev, SYS_RES_IRQ,
243 	    &ctrlr->rid, RF_SHAREABLE | RF_ACTIVE);
244 	if (ctrlr->res == NULL) {
245 		nvme_printf(ctrlr, "unable to allocate shared interrupt\n");
249 	error = bus_setup_intr(ctrlr->dev, ctrlr->res,
251 	    ctrlr, &ctrlr->tag);
253 		nvme_printf(ctrlr, "unable to setup shared interrupt\n");
261 nvme_ctrlr_setup_interrupts(struct nvme_controller *ctrlr)
268 	dev = ctrlr->dev;
273 		return (nvme_ctrlr_setup_shared(ctrlr, 0));
306 	ctrlr->msi_count = num_vectors_requested;
307 	if (pci_alloc_msix(dev, &ctrlr->msi_count) != 0) {
308 		nvme_printf(ctrlr, "unable to allocate MSI-X\n");
309 		ctrlr->msi_count = 0;
312 	if (ctrlr->msi_count == 1)
313 		return (nvme_ctrlr_setup_shared(ctrlr, 1));
314 	if (ctrlr->msi_count != num_vectors_requested) {
316 		num_io_queues = ctrlr->msi_count - 1;
320 	ctrlr->num_io_queues = num_io_queues;
328 	ctrlr->msi_count = min(pci_msi_count(dev), 2);
329 	if (ctrlr->msi_count > 0) {
330 		if (pci_alloc_msi(dev, &ctrlr->msi_count) != 0) {
331 			nvme_printf(ctrlr, "unable to allocate MSI\n");
332 			ctrlr->msi_count = 0;
333 		} else if (ctrlr->msi_count == 2) {
334 			ctrlr->num_io_queues = 1;
338 	return (nvme_ctrlr_setup_shared(ctrlr, ctrlr->msi_count > 0 ? 1 : 0));
344 	struct nvme_controller	*ctrlr;
346 	ctrlr = DEVICE2SOFTC(dev);
347 	return (nvme_ctrlr_suspend(ctrlr));
353 	struct nvme_controller	*ctrlr;
355 	ctrlr = DEVICE2SOFTC(dev);
356 	return (nvme_ctrlr_resume(ctrlr));