irqchip/mvebu-odmi: Switch to parent MSI

All platform MSI users and the PCI/MSI code handle per device MSI domains when the irqdomain associated to the device provides MSI parent functionality. Remove the "global" platform domain related code and provide the MSI parent functionality by filling in msi_parent_ops. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240623142235.759892514@linutronix.de
mariux64 · Jul 18, 2024 · e0b99c4 · e0b99c4
1 parent cdb2387
commit e0b99c4
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Showing 2 changed files with 19 additions and 19 deletions.
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
@@ -379,6 +379,7 @@ config MVEBU_ICU
 
 config MVEBU_ODMI
 	bool
+	select IRQ_MSI_LIB
 	select GENERIC_MSI_IRQ
 
 config MVEBU_PIC

diff --git a/drivers/irqchip/irq-mvebu-odmi.c b/drivers/irqchip/irq-mvebu-odmi.c
@@ -17,6 +17,9 @@
 #include <linux/msi.h>
 #include <linux/of_address.h>
 #include <linux/slab.h>
+
+#include "irq-msi-lib.h"
+
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 
 #define GICP_ODMIN_SET			0x40
@@ -141,27 +144,29 @@ static void odmi_irq_domain_free(struct irq_domain *domain,
 }
 
 static const struct irq_domain_ops odmi_domain_ops = {
+	.select	= msi_lib_irq_domain_select,
 	.alloc	= odmi_irq_domain_alloc,
 	.free	= odmi_irq_domain_free,
 };
 
-static struct irq_chip odmi_msi_irq_chip = {
-	.name	= "ODMI",
-};
+#define ODMI_MSI_FLAGS_REQUIRED  (MSI_FLAG_USE_DEF_DOM_OPS |	\
+				  MSI_FLAG_USE_DEF_CHIP_OPS)
 
-static struct msi_domain_ops odmi_msi_ops = {
-};
+#define ODMI_MSI_FLAGS_SUPPORTED (MSI_GENERIC_FLAGS_MASK)
 
-static struct msi_domain_info odmi_msi_domain_info = {
-	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
-	.ops	= &odmi_msi_ops,
-	.chip	= &odmi_msi_irq_chip,
+static const struct msi_parent_ops odmi_msi_parent_ops = {
+	.supported_flags	= ODMI_MSI_FLAGS_SUPPORTED,
+	.required_flags		= ODMI_MSI_FLAGS_REQUIRED,
+	.bus_select_token	= DOMAIN_BUS_GENERIC_MSI,
+	.bus_select_mask	= MATCH_PLATFORM_MSI,
+	.prefix			= "ODMI-",
+	.init_dev_msi_info	= msi_lib_init_dev_msi_info,
 };
 
 static int __init mvebu_odmi_init(struct device_node *node,
 				  struct device_node *parent)
 {
-	struct irq_domain *parent_domain, *inner_domain, *plat_domain;
+	struct irq_domain *parent_domain, *inner_domain;
 	int ret, i;
 
 	if (of_property_read_u32(node, "marvell,odmi-frames", &odmis_count))
@@ -208,18 +213,12 @@ static int __init mvebu_odmi_init(struct device_node *node,
 		goto err_unmap;
 	}
 
-	plat_domain = platform_msi_create_irq_domain(of_node_to_fwnode(node),
-						     &odmi_msi_domain_info,
-						     inner_domain);
-	if (!plat_domain) {
-		ret = -ENOMEM;
-		goto err_remove_inner;
-	}
+	irq_domain_update_bus_token(inner_domain, DOMAIN_BUS_GENERIC_MSI);
+	inner_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
+	inner_domain->msi_parent_ops = &odmi_msi_parent_ops;
 
 	return 0;
 
-err_remove_inner:
-	irq_domain_remove(inner_domain);
 err_unmap:
 	for (i = 0; i < odmis_count; i++) {
 		struct odmi_data *odmi = &odmis[i];