linux-kernel - [PATCH v3 14/24] genirq/gic-v3-mbi: Remove unused wired MSI mechanics

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Message-Id: <20240614102403.13610-15-shivamurthy.shastri@linutronix.de>
Date: Fri, 14 Jun 2024 12:23:53 +0200
From: Shivamurthy Shastri <shivamurthy.shastri@...utronix.de>
To: linux-kernel@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-pci@...r.kernel.org,
	maz@...nel.org,
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Subject: [PATCH v3 14/24] genirq/gic-v3-mbi: Remove unused wired MSI mechanics

From: Thomas Gleixner <tglx@...utronix.de>

Nothing builds a platform_device MSI domain for wire to MSI on top of
this. The "regular" users of the platform MSI domain just provide their own
irq_write_msi_msg() callback.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@...utronix.de>
Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@...utronix.de>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Marc Zyngier <maz@...nel.org>
---
 drivers/irqchip/irq-gic-v3-mbi.c | 17 +----------------
 1 file changed, 1 insertion(+), 16 deletions(-)

diff --git a/drivers/irqchip/irq-gic-v3-mbi.c b/drivers/irqchip/irq-gic-v3-mbi.c
index dbb8b1efda44..19298cc6c2ee 100644
--- a/drivers/irqchip/irq-gic-v3-mbi.c
+++ b/drivers/irqchip/irq-gic-v3-mbi.c
@@ -199,31 +199,16 @@ static int mbi_allocate_pci_domain(struct irq_domain *nexus_domain,
 }
 #endif
 
-static void mbi_compose_mbi_msg(struct irq_data *data, struct msi_msg *msg)
-{
-	mbi_compose_msi_msg(data, msg);
-
-	msg[1].address_hi = upper_32_bits(mbi_phys_base + GICD_CLRSPI_NSR);
-	msg[1].address_lo = lower_32_bits(mbi_phys_base + GICD_CLRSPI_NSR);
-	msg[1].data = data->parent_data->hwirq;
-
-	iommu_dma_compose_msi_msg(irq_data_get_msi_desc(data), &msg[1]);
-}
-
 /* Platform-MSI specific irqchip */
 static struct irq_chip mbi_pmsi_irq_chip = {
 	.name			= "pMSI",
-	.irq_set_type		= irq_chip_set_type_parent,
-	.irq_compose_msi_msg	= mbi_compose_mbi_msg,
-	.flags			= IRQCHIP_SUPPORTS_LEVEL_MSI,
 };
 
 static struct msi_domain_ops mbi_pmsi_ops = {
 };
 
 static struct msi_domain_info mbi_pmsi_domain_info = {
-	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-		   MSI_FLAG_LEVEL_CAPABLE),
+	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
 	.ops	= &mbi_pmsi_ops,
 	.chip	= &mbi_pmsi_irq_chip,
 };
-- 
2.34.1