3  * ARM GIC v2m MSI(-X) support
58 /* List of flags for specific v2m implementation */
74 	u32 flags;		/* v2m flags for specific implementation */
77 static phys_addr_t gicv2m_get_msi_addr(struct v2m_data *v2m, int hwirq)  in gicv2m_get_msi_addr()  argument
79 	if (v2m->flags & GICV2M_GRAVITON_ADDRESS_ONLY)  in gicv2m_get_msi_addr()
80 		return v2m->res.start | ((hwirq - 32) << 3);  in gicv2m_get_msi_addr()
82 		return v2m->res.start + V2M_MSI_SETSPI_NS;  in gicv2m_get_msi_addr()
87 	struct v2m_data *v2m = irq_data_get_irq_chip_data(data);  in gicv2m_compose_msi_msg()  local
88 	phys_addr_t addr = gicv2m_get_msi_addr(v2m, data->hwirq);  in gicv2m_compose_msi_msg()
93 	if (v2m->flags & GICV2M_GRAVITON_ADDRESS_ONLY)  in gicv2m_compose_msi_msg()
97 	if (v2m->flags & GICV2M_NEEDS_SPI_OFFSET)  in gicv2m_compose_msi_msg()
98 		msg->data -= v2m->spi_offset;  in gicv2m_compose_msi_msg()
145 static void gicv2m_unalloc_msi(struct v2m_data *v2m, unsigned int hwirq,  in gicv2m_unalloc_msi()  argument
149 	bitmap_release_region(v2m->bm, hwirq - v2m->spi_start,  in gicv2m_unalloc_msi()
158 	struct v2m_data *v2m = NULL, *tmp;  in gicv2m_irq_domain_alloc()  local
166 			v2m = tmp;  in gicv2m_irq_domain_alloc()
172 	if (!v2m)  in gicv2m_irq_domain_alloc()
175 	hwirq = v2m->spi_start + offset;  in gicv2m_irq_domain_alloc()
178 				    gicv2m_get_msi_addr(v2m, hwirq));  in gicv2m_irq_domain_alloc()
188 					      &gicv2m_irq_chip, v2m);  in gicv2m_irq_domain_alloc()
195 	gicv2m_unalloc_msi(v2m, hwirq, nr_irqs);  in gicv2m_irq_domain_alloc()
203 	struct v2m_data *v2m = irq_data_get_irq_chip_data(d);  in gicv2m_irq_domain_free()  local
205 	gicv2m_unalloc_msi(v2m, d->hwirq, nr_irqs);  in gicv2m_irq_domain_free()
233 	struct v2m_data *v2m, *tmp;  in gicv2m_teardown()  local
235 	list_for_each_entry_safe(v2m, tmp, &v2m_nodes, entry) {  in gicv2m_teardown()
236 		list_del(&v2m->entry);  in gicv2m_teardown()
237 		bitmap_free(v2m->bm);  in gicv2m_teardown()
238 		iounmap(v2m->base);  in gicv2m_teardown()
239 		of_node_put(to_of_node(v2m->fwnode));  in gicv2m_teardown()
240 		if (is_fwnode_irqchip(v2m->fwnode))  in gicv2m_teardown()
241 			irq_domain_free_fwnode(v2m->fwnode);  in gicv2m_teardown()
242 		kfree(v2m);  in gicv2m_teardown()
267 	struct v2m_data *v2m;  in gicv2m_allocate_domains()  local
269 	v2m = list_first_entry_or_null(&v2m_nodes, struct v2m_data, entry);  in gicv2m_allocate_domains()
270 	if (!v2m)  in gicv2m_allocate_domains()
273 	inner_domain = irq_domain_create_hierarchy(parent, 0, 0, v2m->fwnode,  in gicv2m_allocate_domains()
274 						   &gicv2m_domain_ops, v2m);  in gicv2m_allocate_domains()
291 	struct v2m_data *v2m;  in gicv2m_init_one()  local
293 	v2m = kzalloc(sizeof(struct v2m_data), GFP_KERNEL);  in gicv2m_init_one()
294 	if (!v2m)  in gicv2m_init_one()
297 	INIT_LIST_HEAD(&v2m->entry);  in gicv2m_init_one()
298 	v2m->fwnode = fwnode;  in gicv2m_init_one()
299 	v2m->flags = flags;  in gicv2m_init_one()
301 	memcpy(&v2m->res, res, sizeof(struct resource));  in gicv2m_init_one()
303 	v2m->base = ioremap(v2m->res.start, resource_size(&v2m->res));  in gicv2m_init_one()
304 	if (!v2m->base) {  in gicv2m_init_one()
311 		v2m->spi_start = spi_start;  in gicv2m_init_one()
312 		v2m->nr_spis = nr_spis;  in gicv2m_init_one()
317 		if (v2m->flags & GICV2M_GRAVITON_ADDRESS_ONLY) {  in gicv2m_init_one()
321 		typer = readl_relaxed(v2m->base + V2M_MSI_TYPER);  in gicv2m_init_one()
323 		v2m->spi_start = V2M_MSI_TYPER_BASE_SPI(typer);  in gicv2m_init_one()
324 		v2m->nr_spis = V2M_MSI_TYPER_NUM_SPI(typer);  in gicv2m_init_one()
327 	if (!is_msi_spi_valid(v2m->spi_start, v2m->nr_spis)) {  in gicv2m_init_one()
345 	if (!(v2m->flags & GICV2M_GRAVITON_ADDRESS_ONLY)) {  in gicv2m_init_one()
346 		switch (readl_relaxed(v2m->base + V2M_MSI_IIDR)) {  in gicv2m_init_one()
348 			v2m->flags |= GICV2M_NEEDS_SPI_OFFSET;  in gicv2m_init_one()
349 			v2m->spi_offset = v2m->spi_start;  in gicv2m_init_one()
352 			v2m->flags |= GICV2M_NEEDS_SPI_OFFSET;  in gicv2m_init_one()
353 			v2m->spi_offset = 32;  in gicv2m_init_one()
357 	v2m->bm = bitmap_zalloc(v2m->nr_spis, GFP_KERNEL);  in gicv2m_init_one()
358 	if (!v2m->bm) {  in gicv2m_init_one()
363 	list_add_tail(&v2m->entry, &v2m_nodes);  in gicv2m_init_one()
366 		v2m->spi_start, (v2m->spi_start + v2m->nr_spis - 1));  in gicv2m_init_one()
370 	iounmap(v2m->base);  in gicv2m_init_one()
372 	kfree(v2m);  in gicv2m_init_one()
377 	{	.compatible	= "arm,gic-v2m-frame",	},
398 			pr_err("Failed to allocate v2m resource.\n");  in gicv2m_of_init()
405 			pr_info("DT overriding V2M MSI_TYPER (base:%u, num:%u)\n",  in gicv2m_of_init()
490 		pr_info("ACPI overriding V2M MSI_TYPER (base:%u, num:%u)\n",  in acpi_parse_madt_msi()