irqchip/riscv-imsic: Expose the fwnode via the global config

The fwnode describes a global property of the IMSIC interrupt
controller that is equally relevant to external consumers of
imsic_global_config as it is to the imsic_priv itself.

Keeping it in imsic_priv forces the external drivers to access
the private structure rather than using the already exported
imsic_get_global_config() interface.

Moving the fwnode into imsic_global_config makes the public
API self-contained and eliminates the need for callers to
access imsic_priv internals directly.

Signed-off-by: Prajwal N <prajwal.n@oss.qualcomm.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20261002120417.2708979-1-prajwal.n@oss.qualcomm.com

5 files changed, 14 insertions, 14 deletions

diff --git a/drivers/irqchip/irq-riscv-imsic-early.c b/drivers/irqchip/irq-riscv-imsic-early.c
index 823f5f2ecb3d..06726a062b75 100644
--- a/drivers/irqchip/irq-riscv-imsic-early.c
+++ b/drivers/irqchip/irq-riscv-imsic-early.c
@@ -75,7 +75,7 @@ static int __init imsic_ipi_domain_init(void)
 	riscv_ipi_set_virq_range(virq, IPI_MAX);
 
 	/* Announce that IMSIC is providing IPIs */
-	pr_info("%pfwP: providing IPIs using interrupt %d\n", imsic->fwnode, IMSIC_IPI_ID);
+	pr_info("%pfwP: providing IPIs using interrupt %d\n", imsic->global.fwnode, IMSIC_IPI_ID);
 
 	return 0;
 }
diff --git a/drivers/irqchip/irq-riscv-imsic-platform.c b/drivers/irqchip/irq-riscv-imsic-platform.c
index 643c8e459611..95ff76e63a69 100644
--- a/drivers/irqchip/irq-riscv-imsic-platform.c
+++ b/drivers/irqchip/irq-riscv-imsic-platform.c
@@ -313,40 +313,40 @@ int imsic_irqdomain_init(void)
 	};
 	struct imsic_global_config *global;
 
-	if (!imsic || !imsic->fwnode) {
+	if (!imsic || !imsic->global.fwnode) {
 		pr_err("early driver not probed\n");
 		return -ENODEV;
 	}
 
 	if (imsic->base_domain) {
-		pr_err("%pfwP: irq domain already created\n", imsic->fwnode);
+		pr_err("%pfwP: irq domain already created\n", imsic->global.fwnode);
 		return -ENODEV;
 	}
 
 	/* Create Base IRQ domain */
-	info.fwnode = imsic->fwnode,
+	info.fwnode = imsic->global.fwnode,
 	imsic->base_domain = msi_create_parent_irq_domain(&info, &imsic_msi_parent_ops);
 	if (!imsic->base_domain) {
-		pr_err("%pfwP: failed to create IMSIC base domain\n", imsic->fwnode);
+		pr_err("%pfwP: failed to create IMSIC base domain\n", imsic->global.fwnode);
 		return -ENOMEM;
 	}
 
 	global = &imsic->global;
 	pr_info("%pfwP:  hart-index-bits: %d,  guest-index-bits: %d\n",
-		imsic->fwnode, global->hart_index_bits, global->guest_index_bits);
+		imsic->global.fwnode, global->hart_index_bits, global->guest_index_bits);
 	pr_info("%pfwP: group-index-bits: %d, group-index-shift: %d\n",
-		imsic->fwnode, global->group_index_bits, global->group_index_shift);
+		imsic->global.fwnode, global->group_index_bits, global->group_index_shift);
 	pr_info("%pfwP: per-CPU IDs %d at base address %pa\n",
-		imsic->fwnode, global->nr_ids, &global->base_addr);
+		imsic->global.fwnode, global->nr_ids, &global->base_addr);
 	pr_info("%pfwP: total %d interrupts available\n",
-		imsic->fwnode, num_possible_cpus() * (global->nr_ids - 1));
+		imsic->global.fwnode, num_possible_cpus() * (global->nr_ids - 1));
 
 	return 0;
 }
 
 static int imsic_platform_probe_common(struct fwnode_handle *fwnode)
 {
-	if (imsic && imsic->fwnode != fwnode) {
+	if (imsic && imsic->global.fwnode != fwnode) {
 		pr_err("%pfwP: fwnode mismatch\n", fwnode);
 		return -ENODEV;
 	}
diff --git a/drivers/irqchip/irq-riscv-imsic-state.c b/drivers/irqchip/irq-riscv-imsic-state.c
index 960c71d6295b..01620373b43a 100644
--- a/drivers/irqchip/irq-riscv-imsic-state.c
+++ b/drivers/irqchip/irq-riscv-imsic-state.c
@@ -822,9 +822,9 @@ int __init imsic_setup_state(struct fwnode_handle *fwnode, void *opaque)
 	imsic = kzalloc_obj(*imsic);
 	if (!imsic)
 		return -ENOMEM;
-	imsic->fwnode = fwnode;
 	global = &imsic->global;
 
+	global->fwnode = fwnode;
 	global->local = alloc_percpu(typeof(*global->local));
 	if (!global->local) {
 		rc = -ENOMEM;
diff --git a/drivers/irqchip/irq-riscv-imsic-state.h b/drivers/irqchip/irq-riscv-imsic-state.h
index 878cc192ccec..189829b8673a 100644
--- a/drivers/irqchip/irq-riscv-imsic-state.h
+++ b/drivers/irqchip/irq-riscv-imsic-state.h
@@ -43,9 +43,6 @@ struct imsic_local_priv {
 };
 
 struct imsic_priv {
-	/* Device details */
-	struct fwnode_handle			*fwnode;
-
 	/* Global configuration common for all HARTs */
 	struct imsic_global_config		global;
 
diff --git a/include/linux/irqchip/riscv-imsic.h b/include/linux/irqchip/riscv-imsic.h
index 61af3a5bea09..b7be1aad7774 100644
--- a/include/linux/irqchip/riscv-imsic.h
+++ b/include/linux/irqchip/riscv-imsic.h
@@ -46,6 +46,9 @@ struct imsic_local_config {
 };
 
 struct imsic_global_config {
+	/* Device details */
+	struct fwnode_handle                    *fwnode;
+
 	/*
 	 * MSI Target Address Scheme
 	 *