1 /*-
48 #define	ERR_NOT_IN_MAP		-1
66 	{"annapurna-labs,al-msix",	true},
67 	{"annapurna-labs,alpine-msix",	true},
120 	if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)  in al_msix_probe()
123 	device_set_desc(dev, "Annapurna-Labs MSI-X Controller");  in al_msix_probe()
146 	sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);  in al_msix_attach()
147 	if (sc->res == NULL) {  in al_msix_attach()
152 	sc->base_addr = (bus_addr_t)rman_get_start(sc->res);  in al_msix_attach()
154 	/* Register this device to handle MSI interrupts */  in al_msix_attach()
156 		device_printf(dev, "could not register MSI-X controller\n");  in al_msix_attach()
160 		device_printf(dev, "MSI-X controller registered\n");  in al_msix_attach()
165 		device_printf(dev, "No interrupt-parrent found. "  in al_msix_attach()
169 		/* While at parent - store interrupt cells prop */  in al_msix_attach()
171 		    "#interrupt-cells", &icells, sizeof(icells)) == -1) {  in al_msix_attach()
172 			device_printf(dev, "DTB: Missing #interrupt-cells "  in al_msix_attach()
183 	sc->gic_dev = gic_dev;  in al_msix_attach()
202 	sc->irq_min = interrupts[0];  in al_msix_attach()
203 	sc->irq_max = interrupts[1];  in al_msix_attach()
204 	sc->irq_count = (sc->irq_max - sc->irq_min + 1);  in al_msix_attach()
206 	if (sc->irq_count > MAX_MSIX_COUNT) {  in al_msix_attach()
207 		device_printf(dev, "Available MSI-X count exceeds buffer size."  in al_msix_attach()
209 		sc->irq_count = MAX_MSIX_COUNT;  in al_msix_attach()
212 	mtx_init(&sc->msi_mtx, "msi_mtx", NULL, MTX_DEF);  in al_msix_attach()
214 	sc->irq_alloc = vmem_create("Alpine MSI-X IRQs", 0, sc->irq_count,  in al_msix_attach()
217 	device_printf(dev, "MSI-X SPI IRQ %d-%d\n", sc->irq_min, sc->irq_max);  in al_msix_attach()
231 		if (sc->isrcs[i] == isrc)  in al_find_intr_pos_in_map()
249 	spi = sc->irq_min + i;  in al_msix_map_msi()
253 	 * [63:20] - MSIx TBAR  in al_msix_map_msi()
255 	 * [19]    - WFE_EXIT  in al_msix_map_msi()
258 	 * [18:17] - Target GIC ID  in al_msix_map_msi()
259 	 *           Specifies which IO-GIC (external shared GIC) is targeted  in al_msix_map_msi()
261 	 *           1: IO-GIC 0  in al_msix_map_msi()
264 	 * [16:13] - Local GIC Target List  in al_msix_map_msi()
272 	 * [12:3]  - SPIn  in al_msix_map_msi()
277 	 * [2]     - Function vector  in al_msix_map_msi()
278 	 *           MSI Data vector extension hint  in al_msix_map_msi()
279 	 * [1:0]   - Reserved  in al_msix_map_msi()
282 	*addr = (uint64_t)sc->base_addr + (uint64_t)((1 << 16) + (spi << 3));  in al_msix_map_msi()
286 		device_printf(dev, "MSI mapping: SPI: %d addr: %jx data: %x\n",  in al_msix_map_msi()
306 	if (vmem_alloc(sc->irq_alloc, count, M_FIRSTFIT | M_NOWAIT,  in al_msix_alloc_msi()
313 	fdt_data->hdr.type = INTR_MAP_DATA_FDT;  in al_msix_alloc_msi()
314 	fdt_data->iparent = 0;  in al_msix_alloc_msi()
315 	fdt_data->ncells = GIC_INTR_CELL_CNT;  in al_msix_alloc_msi()
316 	fdt_data->cells[0] = AL_SPI_INTR;	/* code for SPI interrupt */  in al_msix_alloc_msi()
317 	fdt_data->cells[1] = 0;			/* SPI number (uninitialized) */  in al_msix_alloc_msi()
318 	fdt_data->cells[2] = AL_EDGE_HIGH;	/* trig = edge, pol = high */  in al_msix_alloc_msi()
320 	mtx_lock(&sc->msi_mtx);  in al_msix_alloc_msi()
323 		fdt_data->cells[1] = sc->irq_min + i;  in al_msix_alloc_msi()
324 		error = PIC_MAP_INTR(sc->gic_dev,  in al_msix_alloc_msi()
328 				sc->isrcs[j] = NULL;  in al_msix_alloc_msi()
329 			mtx_unlock(&sc->msi_mtx);  in al_msix_alloc_msi()
330 			vmem_free(sc->irq_alloc, irq_base, count);  in al_msix_alloc_msi()
335 		sc->isrcs[i] = *srcs;  in al_msix_alloc_msi()
339 	mtx_unlock(&sc->msi_mtx);  in al_msix_alloc_msi()
344 		    "MSI-X allocation: start SPI %d, count %d\n",  in al_msix_alloc_msi()
345 		    (int)irq_base + sc->irq_min, count);  in al_msix_alloc_msi()
347 	*pic = sc->gic_dev;  in al_msix_alloc_msi()
361 	mtx_lock(&sc->msi_mtx);  in al_msix_release_msi()
364 	vmem_free(sc->irq_alloc, pos, count);  in al_msix_release_msi()
368 			sc->isrcs[pos] = NULL;  in al_msix_release_msi()
372 	mtx_unlock(&sc->msi_mtx);  in al_msix_release_msi()