On Thu, Sep 08, 2022 at 09:33:42PM +0200, Lorenzo Bianconi wrote:
> Introduce foe struct in mtk_soc_data as a container for foe table chip
> related definitions.
> This is a preliminary patch to enable mt7986 wed support.
>
> Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
> ---
> drivers/net/ethernet/mediatek/mtk_eth_soc.c | 70 +++++++-
> drivers/net/ethernet/mediatek/mtk_eth_soc.h | 27 ++-
> drivers/net/ethernet/mediatek/mtk_ppe.c | 161 ++++++++++--------
> drivers/net/ethernet/mediatek/mtk_ppe.h | 29 ++--
> .../net/ethernet/mediatek/mtk_ppe_offload.c | 34 ++--
> 5 files changed, 208 insertions(+), 113 deletions(-)
>
> [...]
> diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h
> index 6d4c91acd1a5..a364f45edf38 100644
> --- a/drivers/net/ethernet/mediatek/mtk_ppe.h
> +++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
> @@ -61,6 +61,8 @@ enum {
> #define MTK_FOE_VLAN2_WINFO_WCID GENMASK(13, 6)
> #define MTK_FOE_VLAN2_WINFO_RING GENMASK(15, 14)
>
> +#define MTK_FIELD_PREP(mask, val) (((typeof(mask))(val) << __bf_shf(mask)) & (mask))
> +#define MTK_FIELD_GET(mask, val) ((typeof(mask))(((val) & (mask)) >> __bf_shf(mask)))
This seems to trigger a compiler bug on ARMv7 (e.g. MT7623) builds:
LD .tmp_vmlinux.kallsyms1
arm-openwrt-linux-muslgnueabi-ld: drivers/net/ethernet/mediatek/mtk_ppe.o: in function `mtk_flow_entry_match':
/usr/src/lede/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-5.15.67/drivers/net/ethernet/mediatek/mtk_ppe.c:406: undefined reference to `__ffsdi2'
arm-openwrt-linux-muslgnueabi-ld: drivers/net/ethernet/mediatek/mtk_ppe.o: in function `__mtk_foe_entry_commit':
/usr/src/lede/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-5.15.67/drivers/net/ethernet/mediatek/mtk_ppe.c:533: undefined reference to `__ffsdi2'
arm-openwrt-linux-muslgnueabi-ld: drivers/net/ethernet/mediatek/mtk_ppe.o: in function `mtk_foe_entry_l2':
/usr/src/lede/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-5.15.67/drivers/net/ethernet/mediatek/mtk_ppe.c:134: undefined reference to `__ffsdi2'
arm-openwrt-linux-muslgnueabi-ld: drivers/net/ethernet/mediatek/mtk_ppe.o: in function `mtk_foe_entry_commit_subflow':
/usr/src/lede/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-5.15.67/drivers/net/ethernet/mediatek/mtk_ppe.c:611: undefined reference to `__ffsdi2'
arm-openwrt-linux-muslgnueabi-ld: drivers/net/ethernet/mediatek/mtk_ppe.o: in function `mtk_foe_entry_ib2':
/usr/src/lede/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-5.15.67/drivers/net/ethernet/mediatek/mtk_ppe.c:148: undefined reference to `__ffsdi2'
arm-openwrt-linux-muslgnueabi-ld: drivers/net/ethernet/mediatek/mtk_ppe.o:/usr/src/lede/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-5.15.67/drivers/net/ethernet/mediatek/mtk_ppe.c:169: more undefined references to `__ffsdi2' follow
> enum {
> MTK_FOE_STATE_INVALID,
> MTK_FOE_STATE_UNBIND,
