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Commit 3fb68fae authored by Marc Zyngier's avatar Marc Zyngier
Browse files

irqchip/gic-v3-its: Register LPI tables with EFI config table 



Upon enabling a redistributor, let's register the allocated tables
with the EFI table that tracks the memory reservations.

Tested-by: default avatarJeremy Linton <jeremy.linton@arm.com>
Tested-by: default avatarBhupesh Sharma <bhsharma@redhat.com>
Tested-by: default avatarLei Zhang <zhang.lei@jp.fujitsu.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent f842ca8e

drivers/irqchip/irq-gic-v3-its.c

+12 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
#include <linux/crash_dump.h>

#include <linux/delay.h>

#include <linux/dma-iommu.h>

#include <linux/efi.h>

#include <linux/interrupt.h>

#include <linux/irqdomain.h>

#include <linux/list.h>
@@ -1628,6 +1629,14 @@ static void its_free_prop_table(struct page *prop_page) 
		   get_order(LPI_PROPBASE_SZ));

}



static int gic_reserve_range(phys_addr_t addr, unsigned long size)

{

	if (efi_enabled(EFI_CONFIG_TABLES))

		return efi_mem_reserve_persistent(addr, size);



	return 0;

}



static int __init its_setup_lpi_prop_table(void)

{

	if (gic_rdists->flags & RDIST_FLAGS_RD_TABLES_PREALLOCATED) {
@@ -1655,6 +1664,8 @@ static int __init its_setup_lpi_prop_table(void) 


		gic_rdists->prop_table_pa = page_to_phys(page);

		gic_rdists->prop_table_va = page_address(page);

		WARN_ON(gic_reserve_range(gic_rdists->prop_table_pa,

					  LPI_PROPBASE_SZ));

	}



	pr_info("GICv3: using LPI property table @%pa\n",
@@ -2049,6 +2060,7 @@ static void its_cpu_init_lpis(void) 


	pend_page = gic_data_rdist()->pend_page;

	paddr = page_to_phys(pend_page);

	WARN_ON(gic_reserve_range(paddr, LPI_PENDBASE_SZ));



	/* set PROPBASE */

	val = (gic_rdists->prop_table_pa |