Commit 4a5f74fa authored by Jing Li's avatar Jing Li Committed by guzitao
Browse files

sw64: acpi: disable INTC initialization via ACPI MADT table 

Sunway inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/IBDJNZ



--------------------------------

Currently, ACPI MADT table for SW64 is not supported. Remove related
codes to avoid erroneous interrupt controller initialization.

Signed-off-by: default avatarJing Li <jingli@wxiat.com>
Reviewed-by: default avatarHe Sheng <hesheng@wxiat.com>
Signed-off-by: default avatarGu Zitao <guzitao@wxiat.com>
parent 2b995cf3

drivers/irqchip/irq-sw64-intc-v2.c

+0 −60
Original line number Diff line number Diff line
@@ -34,66 +34,6 @@ static const struct irq_domain_ops sw64_intc_domain_ops = { 
	.map = sw64_intc_domain_map,

};



#ifdef CONFIG_ACPI

static int __init

intc_parse_madt(union acpi_subtable_headers *header,

		       const unsigned long end)

{

	struct acpi_madt_io_sapic *its_entry;

	static struct irq_domain *root_domain;

	int intc_irqs = 8, irq_base = NR_IRQS_LEGACY;

	irq_hw_number_t hwirq_base = 0;

	int irq_start = -1;



	its_entry = (struct acpi_madt_io_sapic *)header;



	intc_irqs -= hwirq_base; /* calculate # of irqs to allocate */



	irq_base = irq_alloc_descs(irq_start, 16, intc_irqs,

			numa_node_id());

	if (irq_base < 0) {

		WARN(1, "Cannot allocate irq_descs @ IRQ%d, assuming pre-allocated\n",

				irq_start);

		irq_base = irq_start;

	}



	root_domain = irq_domain_add_legacy(NULL, intc_irqs, irq_base,

			hwirq_base, &sw64_intc_domain_ops, NULL);



	if (!root_domain)

		pr_err("Failed to create irqdomain");



	irq_set_default_host(root_domain);



	sw64_io_write(0, MCU_DVC_INT_EN, 0xff);



	return 0;

}



static int __init acpi_intc_init(void)

{

	int count = 0;



	count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_SAPIC,

			      intc_parse_madt, 0);



	if (count <= 0) {

		pr_err("No valid intc entries exist\n");

		return -EINVAL;

	}

	return 0;

}



static int __init intc_init(void)

{

	acpi_intc_init();



	return 0;

}



subsys_initcall(intc_init);

#endif



#ifdef CONFIG_OF

static struct irq_domain *root_domain;