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irqchip/mvebu-gicp: Switch to MSI parent

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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/20240623142235.699780279@linutronix.de
This commit is contained in:
Thomas Gleixner 2024-06-23 17:18:58 +02:00
parent d929e4db22
commit cdb2387230
2 changed files with 20 additions and 25 deletions
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1
drivers/irqchip/Kconfig
View File

@ -371,6 +371,7 @@ config MSCC_OCELOT_IRQ
select GENERIC_IRQ_CHIP
config MVEBU_GICP
select IRQ_MSI_LIB
bool
config MVEBU_ICU

44
drivers/irqchip/irq-mvebu-gicp.c
View File

@ -17,6 +17,8 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include "irq-msi-lib.h"
#include <dt-bindings/interrupt-controller/arm-gic.h>
#define GICP_SETSPI_NSR_OFFSET 0x0
@ -145,32 +147,32 @@ static void gicp_irq_domain_free(struct irq_domain *domain,
}
static const struct irq_domain_ops gicp_domain_ops = {
.select = msi_lib_irq_domain_select,
.alloc = gicp_irq_domain_alloc,
.free = gicp_irq_domain_free,
};
static struct irq_chip gicp_msi_irq_chip = {
.name = "GICP",
.irq_set_type = irq_chip_set_type_parent,
.flags = IRQCHIP_SUPPORTS_LEVEL_MSI,
};
#define GICP_MSI_FLAGS_REQUIRED (MSI_FLAG_USE_DEF_DOM_OPS | \
MSI_FLAG_USE_DEF_CHIP_OPS)
static struct msi_domain_ops gicp_msi_ops = {
};
#define GICP_MSI_FLAGS_SUPPORTED (MSI_GENERIC_FLAGS_MASK | \
MSI_FLAG_LEVEL_CAPABLE)
static struct msi_domain_info gicp_msi_domain_info = {
.flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
MSI_FLAG_LEVEL_CAPABLE),
.ops = &gicp_msi_ops,
.chip = &gicp_msi_irq_chip,
static const struct msi_parent_ops gicp_msi_parent_ops = {
.supported_flags = GICP_MSI_FLAGS_SUPPORTED,
.required_flags = GICP_MSI_FLAGS_REQUIRED,
.bus_select_token = DOMAIN_BUS_GENERIC_MSI,
.bus_select_mask = MATCH_PLATFORM_MSI,
.prefix = "GICP-",
.init_dev_msi_info = msi_lib_init_dev_msi_info,
};
static int mvebu_gicp_probe(struct platform_device *pdev)
{
struct mvebu_gicp *gicp;
struct irq_domain *inner_domain, *plat_domain, *parent_domain;
struct irq_domain *inner_domain, *parent_domain;
struct device_node *node = pdev->dev.of_node;
struct device_node *irq_parent_dn;
struct mvebu_gicp *gicp;
int ret, i;
gicp = devm_kzalloc(&pdev->dev, sizeof(*gicp), GFP_KERNEL);
@ -234,17 +236,9 @@ static int mvebu_gicp_probe(struct platform_device *pdev)
if (!inner_domain)
return -ENOMEM;
plat_domain = platform_msi_create_irq_domain(of_node_to_fwnode(node),
&gicp_msi_domain_info,
inner_domain);
if (!plat_domain) {
irq_domain_remove(inner_domain);
return -ENOMEM;
}
platform_set_drvdata(pdev, gicp);
irq_domain_update_bus_token(inner_domain, DOMAIN_BUS_GENERIC_MSI);
inner_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
inner_domain->msi_parent_ops = &gicp_msi_parent_ops;
return 0;
}