https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: ac9a78681b921877518763ba0e89202254349d1b authored by Linus Torvalds on 07 May 2023, 20:34:35 UTC
Linux 6.4-rc1
Linux 6.4-rc1
Tip revision: ac9a786
l2_cache.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright Altera Corporation (C) 2016. All rights reserved.
*/
#include <linux/io.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include "core.h"
/* A10 System Manager L2 ECC Control register */
#define A10_MPU_CTRL_L2_ECC_OFST 0x0
#define A10_MPU_CTRL_L2_ECC_EN BIT(0)
/* A10 System Manager Global IRQ Mask register */
#define A10_SYSMGR_ECC_INTMASK_CLR_OFST 0x98
#define A10_SYSMGR_ECC_INTMASK_CLR_L2 BIT(0)
/* A10 System Manager L2 ECC IRQ Clear register */
#define A10_SYSMGR_MPU_CLEAR_L2_ECC_OFST 0xA8
#define A10_SYSMGR_MPU_CLEAR_L2_ECC (BIT(31) | BIT(15))
void socfpga_init_l2_ecc(void)
{
struct device_node *np;
void __iomem *mapped_l2_edac_addr;
np = of_find_compatible_node(NULL, NULL, "altr,socfpga-l2-ecc");
if (!np) {
pr_err("Unable to find socfpga-l2-ecc in dtb\n");
return;
}
mapped_l2_edac_addr = of_iomap(np, 0);
of_node_put(np);
if (!mapped_l2_edac_addr) {
pr_err("Unable to find L2 ECC mapping in dtb\n");
return;
}
/* Enable ECC */
writel(0x01, mapped_l2_edac_addr);
iounmap(mapped_l2_edac_addr);
}
void socfpga_init_arria10_l2_ecc(void)
{
struct device_node *np;
void __iomem *mapped_l2_edac_addr;
/* Find the L2 EDAC device tree node */
np = of_find_compatible_node(NULL, NULL, "altr,socfpga-a10-l2-ecc");
if (!np) {
pr_err("Unable to find socfpga-a10-l2-ecc in dtb\n");
return;
}
mapped_l2_edac_addr = of_iomap(np, 0);
of_node_put(np);
if (!mapped_l2_edac_addr) {
pr_err("Unable to find L2 ECC mapping in dtb\n");
return;
}
if (!sys_manager_base_addr) {
pr_err("System Manager not mapped for L2 ECC\n");
goto exit;
}
/* Clear any pending IRQs */
writel(A10_SYSMGR_MPU_CLEAR_L2_ECC, (sys_manager_base_addr +
A10_SYSMGR_MPU_CLEAR_L2_ECC_OFST));
/* Enable ECC */
writel(A10_SYSMGR_ECC_INTMASK_CLR_L2, sys_manager_base_addr +
A10_SYSMGR_ECC_INTMASK_CLR_OFST);
writel(A10_MPU_CTRL_L2_ECC_EN, mapped_l2_edac_addr +
A10_MPU_CTRL_L2_ECC_OFST);
exit:
iounmap(mapped_l2_edac_addr);
}