Re: [PATCH v3] irqchip/gicv3: Workaround for NVIDIA erratum T241-FABRIC-4

[Shanker Donthineni <sdonthineni@nvidia.com>]

Hi Marc,

On 3/17/23 11:26, Shanker Donthineni wrote:
> #define T241_CHIPN_MASK		GENMASK_ULL(45, 44)
> +#define T241_CHIP_GICDA_OFFSET	0x1580000
> +#define SMCCC_SOC_ID_T241	0x036b0241
> +
> +static bool gic_enable_quirk_nvidia_t241(void *data)
> +{
> +	s32 soc_id = arm_smccc_get_soc_id_version();
> +	unsigned long chip_bmask = 0;
> +	phys_addr_t phys;
> +	u32 i;
> +
> +	/* Check JEP106 code for NVIDIA T241 chip (036b:0241) */
> +	if ((soc_id < 0) || (soc_id != SMCCC_SOC_ID_T241))
> +		return false;
> +
> +	/* Find the chips based on GICR regions PHYS addr */
> +	for (i = 0; i < gic_data.nr_redist_regions; i++) {
> +		chip_bmask |= BIT(FIELD_GET(T241_CHIPN_MASK,
> +				  gic_data.redist_regions[i].phys_base));
> +	}

Apologies for the oversight on my part, I failed to address the build issue
for the 32-bit architecture and mistakenly submitted an incorrect patch.

Please ignore this patch and review v4 patch.

Correct change:
         for (i = 0; i < gic_data.nr_redist_regions; i++) {
                 chip_bmask |= BIT(FIELD_GET(T241_CHIPN_MASK,
-                                 gic_data.redist_regions[i].phys_base));
+                                 (u64)gic_data.redist_regions[i].phys_base));

-Shaker