6  * Antoine Tenart <antoine.tenart@free-electrons.com>
16 #include <linux/irqchip/arm-gic.h>
17 #include <linux/msi.h>
26 #include <asm/msi.h>
63 	spin_lock(&priv->msi_map_lock);  in alpine_msix_allocate_sgi()
65 	first = bitmap_find_next_zero_area(priv->msi_map, priv->num_spis, 0,  in alpine_msix_allocate_sgi()
67 	if (first >= priv->num_spis) {  in alpine_msix_allocate_sgi()
68 		spin_unlock(&priv->msi_map_lock);  in alpine_msix_allocate_sgi()
69 		return -ENOSPC;  in alpine_msix_allocate_sgi()
72 	bitmap_set(priv->msi_map, first, num_req);  in alpine_msix_allocate_sgi()
74 	spin_unlock(&priv->msi_map_lock);  in alpine_msix_allocate_sgi()
76 	return priv->spi_first + first;  in alpine_msix_allocate_sgi()
82 	int first = sgi - priv->spi_first;  in alpine_msix_free_sgi()
84 	spin_lock(&priv->msi_map_lock);  in alpine_msix_free_sgi()
86 	bitmap_clear(priv->msi_map, first, num_req);  in alpine_msix_free_sgi()
88 	spin_unlock(&priv->msi_map_lock);  in alpine_msix_free_sgi()
95 	phys_addr_t msg_addr = priv->addr;  in alpine_msix_compose_msi_msg()
97 	msg_addr |= (data->hwirq << 3);  in alpine_msix_compose_msi_msg()
99 	msg->address_hi = upper_32_bits(msg_addr);  in alpine_msix_compose_msi_msg()
100 	msg->address_lo = lower_32_bits(msg_addr);  in alpine_msix_compose_msi_msg()
101 	msg->data = 0;  in alpine_msix_compose_msi_msg()
126 	if (!is_of_node(domain->parent->fwnode))  in alpine_msix_gic_domain_alloc()
127 		return -EINVAL;  in alpine_msix_gic_domain_alloc()
129 	fwspec.fwnode = domain->parent->fwnode;  in alpine_msix_gic_domain_alloc()
139 	d = irq_domain_get_irq_data(domain->parent, virq);  in alpine_msix_gic_domain_alloc()
140 	d->chip->irq_set_type(d, IRQ_TYPE_EDGE_RISING);  in alpine_msix_gic_domain_alloc()
149 	struct alpine_msix_data *priv = domain->host_data;  in alpine_msix_middle_domain_alloc()
181 	alpine_msix_free_sgi(priv, d->hwirq, nr_irqs);  in alpine_msix_middle_domain_free()
198 		return -ENODEV;  in alpine_msix_init_domains()
205 		return -ENXIO;  in alpine_msix_init_domains()
213 		return -ENOMEM;  in alpine_msix_init_domains()
220 		pr_err("Failed to create MSI domain\n");  in alpine_msix_init_domains()
222 		return -ENOMEM;  in alpine_msix_init_domains()
237 		return -ENOMEM;  in alpine_msix_init()
239 	spin_lock_init(&priv->msi_map_lock);  in alpine_msix_init()
254 	priv->addr = res.start & GENMASK_ULL(63,20);  in alpine_msix_init()
255 	priv->addr |= ALPINE_MSIX_SPI_TARGET_CLUSTER0;  in alpine_msix_init()
257 	if (of_property_read_u32(node, "al,msi-base-spi", &priv->spi_first)) {  in alpine_msix_init()
258 		pr_err("Unable to parse MSI base\n");  in alpine_msix_init()
259 		ret = -EINVAL;  in alpine_msix_init()
263 	if (of_property_read_u32(node, "al,msi-num-spis", &priv->num_spis)) {  in alpine_msix_init()
264 		pr_err("Unable to parse MSI numbers\n");  in alpine_msix_init()
265 		ret = -EINVAL;  in alpine_msix_init()
269 	priv->msi_map = bitmap_zalloc(priv->num_spis, GFP_KERNEL);  in alpine_msix_init()
270 	if (!priv->msi_map) {  in alpine_msix_init()
271 		ret = -ENOMEM;  in alpine_msix_init()
276 		 priv->num_spis, priv->spi_first);  in alpine_msix_init()
285 	bitmap_free(priv->msi_map);  in alpine_msix_init()
290 IRQCHIP_DECLARE(alpine_msix, "al,alpine-msix", alpine_msix_init);