On Thu, 2022-06-09 at 12:40 +0200, AngeloGioacchino Del Regno wrote:
> In preparation for adding support for MT6795, add a new flag named
> TF_PORT_TO_ADDR_MT8173 and use that instead of checking for m4u_plat
> type in mtk_iommu_hw_init() to avoid seeing a long list of m4u_plat
> checks there in the future.
>
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@xxxxxxxxxxxxx>
Retitle to: iommu/mediatek: Xxx, then
Reviewed-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
> ---
> drivers/iommu/mtk_iommu.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index 0ea0848581e9..8611cf8e4bd5 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -140,6 +140,7 @@
> #define IFA_IOMMU_PCIE_SUPPORT BIT(16)
> /* IOMMU I/O (r/w) is enabled using PERICFG_IOMMU_1 register */
> #define HAS_PERI_IOMMU1_REG BIT(17)
> +#define TF_PORT_TO_ADDR_MT8173 BIT(18)
>
> #define MTK_IOMMU_HAS_FLAG_MASK(pdata, _x, mask) \
> ((((pdata)->flags) & (mask)) == (_x))
> @@ -960,7 +961,7 @@ static int mtk_iommu_hw_init(const struct
> mtk_iommu_data *data, unsigned int ban
> * Global control settings are in bank0. May re-init these
> global registers
> * since no sure if there is bank0 consumers.
> */
> - if (data->plat_data->m4u_plat == M4U_MT8173) {
> + if (MTK_IOMMU_HAS_FLAG(data->plat_data,
> TF_PORT_TO_ADDR_MT8173)) {
> regval = F_MMU_PREFETCH_RT_REPLACE_MOD |
> F_MMU_TF_PROT_TO_PROGRAM_ADDR_MT8173;
> } else {
> @@ -1437,7 +1438,8 @@ static const struct mtk_iommu_plat_data
> mt8167_data = {
> static const struct mtk_iommu_plat_data mt8173_data = {
> .m4u_plat = M4U_MT8173,
> .flags = HAS_4GB_MODE | HAS_BCLK | RESET_AXI |
> - HAS_LEGACY_IVRP_PADDR | MTK_IOMMU_TYPE_MM,
> + HAS_LEGACY_IVRP_PADDR | MTK_IOMMU_TYPE_MM |
> + TF_PORT_TO_ADDR_MT8173,
> .inv_sel_reg = REG_MMU_INV_SEL_GEN1,
> .banks_num = 1,
> .banks_enable = {true},
