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net: ethernet: mtk_eth_soc: support per-flow accounting on MT7988
NETSYS_V3 uses 64 bits for each counters while older SoCs are using 48/40 bits for each counter. Support reading per-flow byte and package counters on NETSYS_V3. Signed-off-by: Daniel Golle <daniel@makrotopia.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/37a0928fa8c1253b197884c68ce1f54239421ac5.1690946442.git.daniel@makrotopia.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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@ -5064,6 +5064,7 @@ static const struct mtk_soc_data mt7988_data = {
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.version = 3,
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.offload_version = 2,
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.hash_offset = 4,
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.has_accounting = true,
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.foe_entry_size = MTK_FOE_ENTRY_V3_SIZE,
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.txrx = {
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.txd_size = sizeof(struct mtk_tx_dma_v2),
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@ -92,7 +92,6 @@ static int mtk_ppe_mib_wait_busy(struct mtk_ppe *ppe)
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static int mtk_mib_entry_read(struct mtk_ppe *ppe, u16 index, u64 *bytes, u64 *packets)
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{
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u32 byte_cnt_low, byte_cnt_high, pkt_cnt_low, pkt_cnt_high;
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u32 val, cnt_r0, cnt_r1, cnt_r2;
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int ret;
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@ -107,12 +106,20 @@ static int mtk_mib_entry_read(struct mtk_ppe *ppe, u16 index, u64 *bytes, u64 *p
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cnt_r1 = readl(ppe->base + MTK_PPE_MIB_SER_R1);
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cnt_r2 = readl(ppe->base + MTK_PPE_MIB_SER_R2);
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byte_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R0_BYTE_CNT_LOW, cnt_r0);
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byte_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R1_BYTE_CNT_HIGH, cnt_r1);
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pkt_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R1_PKT_CNT_LOW, cnt_r1);
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pkt_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R2_PKT_CNT_HIGH, cnt_r2);
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*bytes = ((u64)byte_cnt_high << 32) | byte_cnt_low;
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*packets = (pkt_cnt_high << 16) | pkt_cnt_low;
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if (mtk_is_netsys_v3_or_greater(ppe->eth)) {
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/* 64 bit for each counter */
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u32 cnt_r3 = readl(ppe->base + MTK_PPE_MIB_SER_R3);
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*bytes = ((u64)cnt_r1 << 32) | cnt_r0;
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*packets = ((u64)cnt_r3 << 32) | cnt_r2;
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} else {
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/* 48 bit byte counter, 40 bit packet counter */
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u32 byte_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R0_BYTE_CNT_LOW, cnt_r0);
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u32 byte_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R1_BYTE_CNT_HIGH, cnt_r1);
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u32 pkt_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R1_PKT_CNT_LOW, cnt_r1);
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u32 pkt_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R2_PKT_CNT_HIGH, cnt_r2);
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*bytes = ((u64)byte_cnt_high << 32) | byte_cnt_low;
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*packets = ((u64)pkt_cnt_high << 16) | pkt_cnt_low;
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}
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return 0;
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}
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@ -163,6 +163,8 @@ enum {
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#define MTK_PPE_MIB_SER_R2 0x348
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#define MTK_PPE_MIB_SER_R2_PKT_CNT_HIGH GENMASK(23, 0)
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#define MTK_PPE_MIB_SER_R3 0x34c
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#define MTK_PPE_MIB_CACHE_CTL 0x350
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#define MTK_PPE_MIB_CACHE_CTL_EN BIT(0)
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#define MTK_PPE_MIB_CACHE_CTL_FLUSH BIT(2)
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