6  * Antoine Tenart <antoine.tenart@free-electrons.com>
16 #include <linux/irqchip/arm-gic.h>
17 #include <linux/irqchip/irq-msi-lib.h>
18 #include <linux/msi.h>
27 #include <asm/msi.h>
44 	guard(spinlock)(&priv->msi_map_lock);  in alpine_msix_allocate_sgi()
45 	first = bitmap_find_next_zero_area(priv->msi_map, priv->num_spis, 0, num_req, 0);  in alpine_msix_allocate_sgi()
46 	if (first >= priv->num_spis)  in alpine_msix_allocate_sgi()
47 		return -ENOSPC;  in alpine_msix_allocate_sgi()
49 	bitmap_set(priv->msi_map, first, num_req);  in alpine_msix_allocate_sgi()
50 	return priv->spi_first + first;  in alpine_msix_allocate_sgi()
55 	int first = sgi - priv->spi_first;  in alpine_msix_free_sgi()
57 	guard(spinlock)(&priv->msi_map_lock);  in alpine_msix_free_sgi()
58 	bitmap_clear(priv->msi_map, first, num_req);  in alpine_msix_free_sgi()
64 	phys_addr_t msg_addr = priv->addr;  in alpine_msix_compose_msi_msg()
66 	msg_addr |= (data->hwirq << 3);  in alpine_msix_compose_msi_msg()
67 	msg->address_hi = upper_32_bits(msg_addr);  in alpine_msix_compose_msi_msg()
68 	msg->address_lo = lower_32_bits(msg_addr);  in alpine_msix_compose_msi_msg()
69 	msg->data = 0;  in alpine_msix_compose_msi_msg()
87 	if (!is_of_node(domain->parent->fwnode))  in alpine_msix_gic_domain_alloc()
88 		return -EINVAL;  in alpine_msix_gic_domain_alloc()
90 	fwspec.fwnode = domain->parent->fwnode;  in alpine_msix_gic_domain_alloc()
100 	d = irq_domain_get_irq_data(domain->parent, virq);  in alpine_msix_gic_domain_alloc()
101 	d->chip->irq_set_type(d, IRQ_TYPE_EDGE_RISING);  in alpine_msix_gic_domain_alloc()
108 	struct alpine_msix_data *priv = domain->host_data;  in alpine_msix_middle_domain_alloc()
138 	alpine_msix_free_sgi(priv, d->hwirq, nr_irqs);  in alpine_msix_middle_domain_free()
160 	.prefix			= "ALPINE-",
176 		return -ENODEV;  in alpine_msix_init_domains()
183 		return -ENXIO;  in alpine_msix_init_domains()
187 		pr_err("Failed to create MSI domain\n");  in alpine_msix_init_domains()
188 		return -ENOMEM;  in alpine_msix_init_domains()
200 		return -ENOMEM;  in alpine_msix_init()
202 	spin_lock_init(&priv->msi_map_lock);  in alpine_msix_init()
217 	priv->addr = res.start & GENMASK_ULL(63,20);  in alpine_msix_init()
218 	priv->addr |= ALPINE_MSIX_SPI_TARGET_CLUSTER0;  in alpine_msix_init()
220 	if (of_property_read_u32(node, "al,msi-base-spi", &priv->spi_first)) {  in alpine_msix_init()
221 		pr_err("Unable to parse MSI base\n");  in alpine_msix_init()
222 		return -EINVAL;  in alpine_msix_init()
225 	if (of_property_read_u32(node, "al,msi-num-spis", &priv->num_spis)) {  in alpine_msix_init()
226 		pr_err("Unable to parse MSI numbers\n");  in alpine_msix_init()
227 		return -EINVAL;  in alpine_msix_init()
230 	unsigned long *msi_map __free(kfree) = bitmap_zalloc(priv->num_spis, GFP_KERNEL);  in alpine_msix_init()
233 		return -ENOMEM;  in alpine_msix_init()
234 	priv->msi_map = msi_map;  in alpine_msix_init()
236 	pr_debug("Registering %d msixs, starting at %d\n", priv->num_spis, priv->spi_first);  in alpine_msix_init()
246 IRQCHIP_DECLARE(alpine_msix, "al,alpine-msix", alpine_msix_init);