system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-28 23:41:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

EDAC/synopsys: Fix error injection on Zynq UltraScale+

Browse source 
The Zynq UltraScale+ MPSoC DDR has a disjoint memory from 2GB to 32GB.
The DDR host interface has a contiguous memory so while injecting
errors, the driver should remove the hole else the injection fails as
the address translation is incorrect.

Introduce a get_mem_info() function pointer and set it for Zynq
UltraScale+ platform to return host address.

Fixes: 1a81361f75 ("EDAC, synopsys: Add Error Injection support for ZynqMP DDR controller")
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240711100656.31376-1-shubhrajyoti.datta@amd.com
This commit is contained in:
Shubhrajyoti Datta 2024-07-11 15:36:56 +05:30 committed by Borislav Petkov (AMD)
parent 8400291e28
commit 35e6dbfe18
1 changed files with 34 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
drivers/edac/synopsys_edac.c
View file

@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/sizes.h>
#include <linux/interrupt.h>
#include <linux/of.h>
@ -337,6 +338,7 @@ struct synps_edac_priv {
* @get_mtype: Get mtype.
* @get_dtype: Get dtype.
* @get_ecc_state: Get ECC state.
* @get_mem_info: Get EDAC memory info
* @quirks: To differentiate IPs.
*/
struct synps_platform_data {
@ -344,6 +346,9 @@ struct synps_platform_data {
enum mem_type (*get_mtype)(const void __iomem *base);
enum dev_type (*get_dtype)(const void __iomem *base);
bool (*get_ecc_state)(void __iomem *base);
#ifdef CONFIG_EDAC_DEBUG
u64 (*get_mem_info)(struct synps_edac_priv *priv);
#endif
int quirks;
};
@ -402,6 +407,25 @@ static int zynq_get_error_info(struct synps_edac_priv *priv)
return 0;
}
#ifdef CONFIG_EDAC_DEBUG
/**
* zynqmp_get_mem_info - Get the current memory info.
* @priv: DDR memory controller private instance data.
*
* Return: host interface address.
*/
static u64 zynqmp_get_mem_info(struct synps_edac_priv *priv)
{
u64 hif_addr = 0, linear_addr;
linear_addr = priv->poison_addr;
if (linear_addr >= SZ_32G)
linear_addr = linear_addr - SZ_32G + SZ_2G;
hif_addr = linear_addr >> 3;
return hif_addr;
}
#endif
/**
* zynqmp_get_error_info - Get the current ECC error info.
* @priv: DDR memory controller private instance data.
@ -922,6 +946,9 @@ static const struct synps_platform_data zynqmp_edac_def = {
.get_mtype = zynqmp_get_mtype,
.get_dtype = zynqmp_get_dtype,
.get_ecc_state = zynqmp_get_ecc_state,
#ifdef CONFIG_EDAC_DEBUG
.get_mem_info = zynqmp_get_mem_info,
#endif
.quirks = (DDR_ECC_INTR_SUPPORT
#ifdef CONFIG_EDAC_DEBUG
| DDR_ECC_DATA_POISON_SUPPORT
@ -975,10 +1002,16 @@ MODULE_DEVICE_TABLE(of, synps_edac_match);
static void ddr_poison_setup(struct synps_edac_priv *priv)
{
int col = 0, row = 0, bank = 0, bankgrp = 0, rank = 0, regval;
const struct synps_platform_data *p_data;
int index;
ulong hif_addr = 0;
hif_addr = priv->poison_addr >> 3;
p_data = priv->p_data;
if (p_data->get_mem_info)
hif_addr = p_data->get_mem_info(priv);
else
hif_addr = priv->poison_addr >> 3;
for (index = 0; index < DDR_MAX_ROW_SHIFT; index++) {
if (priv->row_shift[index])