1 /*-
5  * SPDX-License-Identifier: BSD-2-Clause
51 } pci_ids[] = { { 0x131b36, "QEMU UFS Host Controller", UFSHCI_REF_CLK_19_2MHz,
69 	while (ep->devid && ep->devid != devid)  in ufshci_pci_probe()
72 	if (ep->devid) {  in ufshci_pci_probe()
73 		ctrlr->quirks = ep->quirks;  in ufshci_pci_probe()
74 		ctrlr->ref_clk = ep->ref_clk;  in ufshci_pci_probe()
77 	if (ep->desc) {  in ufshci_pci_probe()
78 		device_set_desc(device, ep->desc);  in ufshci_pci_probe()
88 	ctrlr->resource_id = PCIR_BAR(0);  in ufshci_pci_allocate_bar()
90 	ctrlr->resource = bus_alloc_resource_any(ctrlr->dev, SYS_RES_MEMORY,  in ufshci_pci_allocate_bar()
91 	    &ctrlr->resource_id, RF_ACTIVE);  in ufshci_pci_allocate_bar()
93 	if (ctrlr->resource == NULL) {  in ufshci_pci_allocate_bar()
98 	ctrlr->bus_tag = rman_get_bustag(ctrlr->resource);  in ufshci_pci_allocate_bar()
99 	ctrlr->bus_handle = rman_get_bushandle(ctrlr->resource);  in ufshci_pci_allocate_bar()
100 	ctrlr->regs = (struct ufshci_registers *)ctrlr->bus_handle;  in ufshci_pci_allocate_bar()
111 	ctrlr->dev = dev;  in ufshci_pci_attach()
122 	if (ctrlr->resource != NULL) {  in ufshci_pci_attach()
123 		bus_release_resource(dev, SYS_RES_MEMORY, ctrlr->resource_id,  in ufshci_pci_attach()
124 		    ctrlr->resource);  in ufshci_pci_attach()
127 	if (ctrlr->tag)  in ufshci_pci_attach()
128 		bus_teardown_intr(dev, ctrlr->res, ctrlr->tag);  in ufshci_pci_attach()
130 	if (ctrlr->res)  in ufshci_pci_attach()
131 		bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(ctrlr->res),  in ufshci_pci_attach()
132 		    ctrlr->res);  in ufshci_pci_attach()
134 	if (ctrlr->msi_count > 0)  in ufshci_pci_attach()
147 	if (ctrlr->msi_count > 0)  in ufshci_pci_detach()
158 	ctrlr->num_io_queues = 1;  in ufshci_pci_setup_shared()
159 	ctrlr->rid = rid;  in ufshci_pci_setup_shared()
160 	ctrlr->res = bus_alloc_resource_any(ctrlr->dev, SYS_RES_IRQ,  in ufshci_pci_setup_shared()
161 	    &ctrlr->rid, RF_SHAREABLE | RF_ACTIVE);  in ufshci_pci_setup_shared()
162 	if (ctrlr->res == NULL) {  in ufshci_pci_setup_shared()
167 	error = bus_setup_intr(ctrlr->dev, ctrlr->res,  in ufshci_pci_setup_shared()
169 	    ctrlr, &ctrlr->tag);  in ufshci_pci_setup_shared()
171 		ufshci_printf(ctrlr, "unable to setup shared interrupt\n");  in ufshci_pci_setup_shared()
181 	device_t dev = ctrlr->dev;  in ufshci_pci_setup_interrupts()
194 	 * Try to allocate one MSI-X per core for I/O queues, plus one  in ufshci_pci_setup_interrupts()
195 	 * for admin queue, but accept single shared MSI-X if have to.  in ufshci_pci_setup_interrupts()
196 	 * Fall back to MSI if can't get any MSI-X.  in ufshci_pci_setup_interrupts()
203 	num_io_queues = 1;  in ufshci_pci_setup_interrupts()
206 	if (num_io_queues < 1 || num_io_queues > mp_ncpus)  in ufshci_pci_setup_interrupts()
209 	per_cpu_io_queues = 1;  in ufshci_pci_setup_interrupts()
212 		num_io_queues = 1;  in ufshci_pci_setup_interrupts()
216 	if (min_cpus_per_ioq > 1) {  in ufshci_pci_setup_interrupts()
218 		    max(1, mp_ncpus / min_cpus_per_ioq));  in ufshci_pci_setup_interrupts()
221 	num_io_queues = min(num_io_queues, max(1, pci_msix_count(dev) - 1));  in ufshci_pci_setup_interrupts()
225 		num_io_queues -= num_io_queues % vm_ndomains;  in ufshci_pci_setup_interrupts()
226 	num_vectors_requested = min(num_io_queues + 1, pci_msix_count(dev));  in ufshci_pci_setup_interrupts()
227 	ctrlr->msi_count = num_vectors_requested;  in ufshci_pci_setup_interrupts()
228 	if (pci_alloc_msix(dev, &ctrlr->msi_count) != 0) {  in ufshci_pci_setup_interrupts()
229 		ufshci_printf(ctrlr, "unable to allocate MSI-X\n");  in ufshci_pci_setup_interrupts()
230 		ctrlr->msi_count = 0;  in ufshci_pci_setup_interrupts()
233 	if (ctrlr->msi_count == 1)  in ufshci_pci_setup_interrupts()
234 		return (ufshci_pci_setup_shared(ctrlr, 1));  in ufshci_pci_setup_interrupts()
235 	if (ctrlr->msi_count != num_vectors_requested) {  in ufshci_pci_setup_interrupts()
237 		num_io_queues = ctrlr->msi_count - 1;  in ufshci_pci_setup_interrupts()
241 	ctrlr->num_io_queues = num_io_queues;  in ufshci_pci_setup_interrupts()
249 	ctrlr->msi_count = min(pci_msi_count(dev), 2);  in ufshci_pci_setup_interrupts()
250 	if (ctrlr->msi_count > 0) {  in ufshci_pci_setup_interrupts()
251 		if (pci_alloc_msi(dev, &ctrlr->msi_count) != 0) {  in ufshci_pci_setup_interrupts()
253 			ctrlr->msi_count = 0;  in ufshci_pci_setup_interrupts()
254 		} else if (ctrlr->msi_count == 2) {  in ufshci_pci_setup_interrupts()
255 			ctrlr->num_io_queues = 1;  in ufshci_pci_setup_interrupts()
261 	return (ufshci_pci_setup_shared(ctrlr, ctrlr->msi_count > 0 ? 1 : 0));  in ufshci_pci_setup_interrupts()