[+Robert, Will]
Rafael, Robert,
On Fri, Oct 13, 2017 at 03:09:49PM +0800, Hanjun Guo wrote:
[...]
> +#if (ACPI_CA_VERSION > 0x20170929)
Any objection to handling 4.15 trees dependency by using ACPICA
version as a temporary guard (that I will promptly remove at -rc1) ?
This series will go via arm64 tree and I see no other obvious way of
handling the dependency with ACPICA, unless I can send an ACPI IORT pull
request to Rafael and ACPICA changes go via Rafael's tree too.
Please let me know, I would like to send the pull request to arm64
shortly.
Thanks,
Lorenzo
> +static int iort_get_id_mapping_index(struct acpi_iort_node *node)
> +{
> + struct acpi_iort_smmu_v3 *smmu;
> +
> + switch (node->type) {
> + case ACPI_IORT_NODE_SMMU_V3:
> + /*
> + * SMMUv3 dev ID mapping index was introdueced in revision 1
> + * table, not available in revision 0
> + */
> + if (node->revision < 1)
> + return -EINVAL;
> +
> + smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
> + /*
> + * ID mapping index is only ignored if all interrupts are
> + * GSIV based
> + */
> + if (smmu->event_gsiv && smmu->pri_gsiv && smmu->gerr_gsiv
> + && smmu->sync_gsiv)
> + return -EINVAL;
> +
> + if (smmu->id_mapping_index >= node->mapping_count) {
> + pr_err(FW_BUG "[node %p type %d] ID mapping index overflows valid mappings\n",
> + node, node->type);
> + return -EINVAL;
> + }
> +
> + return smmu->id_mapping_index;
> + default:
> + return -EINVAL;
> + }
> +}
> +#else
> static inline int iort_get_id_mapping_index(struct acpi_iort_node *node)
> {
> return -EINVAL;
> }
> +#endif
>
> static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
> u32 id_in, u32 *id_out,
> --
> 1.7.12.4
>
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