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()
90 	if (v2m->flags & GICV2M_GRAVITON_ADDRESS_ONLY)  in gicv2m_compose_msi_msg()
94 	if (v2m->flags & GICV2M_NEEDS_SPI_OFFSET)  in gicv2m_compose_msi_msg()
95 		msg->data -= v2m->spi_offset;  in gicv2m_compose_msi_msg()
142 static void gicv2m_unalloc_msi(struct v2m_data *v2m, unsigned int hwirq,  in gicv2m_unalloc_msi()  argument
146 	bitmap_release_region(v2m->bm, hwirq - v2m->spi_start,  in gicv2m_unalloc_msi()
155 	struct v2m_data *v2m = NULL, *tmp;  in gicv2m_irq_domain_alloc()  local
163 			v2m = tmp;  in gicv2m_irq_domain_alloc()
169 	if (!v2m)  in gicv2m_irq_domain_alloc()
172 	hwirq = v2m->spi_start + offset;  in gicv2m_irq_domain_alloc()
175 				    gicv2m_get_msi_addr(v2m, hwirq));  in gicv2m_irq_domain_alloc()
185 					      &gicv2m_irq_chip, v2m);  in gicv2m_irq_domain_alloc()
192 	gicv2m_unalloc_msi(v2m, hwirq, nr_irqs);  in gicv2m_irq_domain_alloc()
200 	struct v2m_data *v2m = irq_data_get_irq_chip_data(d);  in gicv2m_irq_domain_free()  local
202 	gicv2m_unalloc_msi(v2m, d->hwirq, nr_irqs);  in gicv2m_irq_domain_free()
230 	struct v2m_data *v2m, *tmp;  in gicv2m_teardown()  local
232 	list_for_each_entry_safe(v2m, tmp, &v2m_nodes, entry) {  in gicv2m_teardown()
233 		list_del(&v2m->entry);  in gicv2m_teardown()
234 		bitmap_free(v2m->bm);  in gicv2m_teardown()
235 		iounmap(v2m->base);  in gicv2m_teardown()
236 		of_node_put(to_of_node(v2m->fwnode));  in gicv2m_teardown()
237 		if (is_fwnode_irqchip(v2m->fwnode))  in gicv2m_teardown()
238 			irq_domain_free_fwnode(v2m->fwnode);  in gicv2m_teardown()
239 		kfree(v2m);  in gicv2m_teardown()
265 	struct v2m_data *v2m;  in gicv2m_allocate_domains()  local
267 	v2m = list_first_entry_or_null(&v2m_nodes, struct v2m_data, entry);  in gicv2m_allocate_domains()
268 	if (!v2m)  in gicv2m_allocate_domains()
271 	inner_domain = irq_domain_create_hierarchy(parent, 0, 0, v2m->fwnode,  in gicv2m_allocate_domains()
272 						   &gicv2m_domain_ops, v2m);  in gicv2m_allocate_domains()
289 	struct v2m_data *v2m;  in gicv2m_init_one()  local
291 	v2m = kzalloc(sizeof(struct v2m_data), GFP_KERNEL);  in gicv2m_init_one()
292 	if (!v2m)  in gicv2m_init_one()
295 	INIT_LIST_HEAD(&v2m->entry);  in gicv2m_init_one()
296 	v2m->fwnode = fwnode;  in gicv2m_init_one()
297 	v2m->flags = flags;  in gicv2m_init_one()
299 	memcpy(&v2m->res, res, sizeof(struct resource));  in gicv2m_init_one()
301 	v2m->base = ioremap(v2m->res.start, resource_size(&v2m->res));  in gicv2m_init_one()
302 	if (!v2m->base) {  in gicv2m_init_one()
309 		v2m->spi_start = spi_start;  in gicv2m_init_one()
310 		v2m->nr_spis = nr_spis;  in gicv2m_init_one()
315 		if (v2m->flags & GICV2M_GRAVITON_ADDRESS_ONLY) {  in gicv2m_init_one()
319 		typer = readl_relaxed(v2m->base + V2M_MSI_TYPER);  in gicv2m_init_one()
321 		v2m->spi_start = V2M_MSI_TYPER_BASE_SPI(typer);  in gicv2m_init_one()
322 		v2m->nr_spis = V2M_MSI_TYPER_NUM_SPI(typer);  in gicv2m_init_one()
325 	if (!is_msi_spi_valid(v2m->spi_start, v2m->nr_spis)) {  in gicv2m_init_one()
343 	if (!(v2m->flags & GICV2M_GRAVITON_ADDRESS_ONLY)) {  in gicv2m_init_one()
344 		switch (readl_relaxed(v2m->base + V2M_MSI_IIDR)) {  in gicv2m_init_one()
346 			v2m->flags |= GICV2M_NEEDS_SPI_OFFSET;  in gicv2m_init_one()
347 			v2m->spi_offset = v2m->spi_start;  in gicv2m_init_one()
350 			v2m->flags |= GICV2M_NEEDS_SPI_OFFSET;  in gicv2m_init_one()
351 			v2m->spi_offset = 32;  in gicv2m_init_one()
355 	v2m->bm = bitmap_zalloc(v2m->nr_spis, GFP_KERNEL);  in gicv2m_init_one()
356 	if (!v2m->bm) {  in gicv2m_init_one()
361 	list_add_tail(&v2m->entry, &v2m_nodes);  in gicv2m_init_one()
364 		v2m->spi_start, (v2m->spi_start + v2m->nr_spis - 1));  in gicv2m_init_one()
368 	iounmap(v2m->base);  in gicv2m_init_one()
370 	kfree(v2m);  in gicv2m_init_one()
375 	{	.compatible	= "arm,gic-v2m-frame",	},
396 			pr_err("Failed to allocate v2m resource.\n");  in gicv2m_of_init()
403 			pr_info("DT overriding V2M MSI_TYPER (base:%u, num:%u)\n",  in gicv2m_of_init()
488 		pr_info("ACPI overriding V2M MSI_TYPER (base:%u, num:%u)\n",  in acpi_parse_madt_msi()