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Fix ethernet hang issue on MT7981/MT7986

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Ycarus (Yannick Chabanois) 2024-01-25 13:21:21 +01:00
parent ae313eafe9
commit 918612e30a
2 changed files with 722 additions and 0 deletions
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6.1/target/linux/mediatek/patches-6.1/961-net-ethernet-mediatek-split-tx-and-rx-fields-in-mtk_.patch Normal file
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@ -0,0 +1,599 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Thu, 2 Nov 2023 16:47:07 +0100
Subject: [PATCH net-next 1/2] net: ethernet: mediatek: split tx and rx fields
in mtk_soc_data struct
Split tx and rx fields in mtk_soc_data struct. This is a preliminary
patch to roll back to QDMA for MT7986 SoC in order to fix a hw hang
if the device receives a corrupted packet.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 210 ++++++++++++--------
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 29 +--
2 files changed, 139 insertions(+), 100 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1238,7 +1238,7 @@ static int mtk_init_fq_dma(struct mtk_et
eth->scratch_ring = eth->sram_base;
else
eth->scratch_ring = dma_alloc_coherent(eth->dma_dev,
- cnt * soc->txrx.txd_size,
+ cnt * soc->tx.desc_size,
&eth->phy_scratch_ring,
GFP_KERNEL);
if (unlikely(!eth->scratch_ring))
@@ -1254,16 +1254,16 @@ static int mtk_init_fq_dma(struct mtk_et
if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr)))
return -ENOMEM;
- phy_ring_tail = eth->phy_scratch_ring + soc->txrx.txd_size * (cnt - 1);
+ phy_ring_tail = eth->phy_scratch_ring + soc->tx.desc_size * (cnt - 1);
for (i = 0; i < cnt; i++) {
struct mtk_tx_dma_v2 *txd;
- txd = eth->scratch_ring + i * soc->txrx.txd_size;
+ txd = eth->scratch_ring + i * soc->tx.desc_size;
txd->txd1 = dma_addr + i * MTK_QDMA_PAGE_SIZE;
if (i < cnt - 1)
txd->txd2 = eth->phy_scratch_ring +
- (i + 1) * soc->txrx.txd_size;
+ (i + 1) * soc->tx.desc_size;
txd->txd3 = TX_DMA_PLEN0(MTK_QDMA_PAGE_SIZE);
txd->txd4 = 0;
@@ -1512,7 +1512,7 @@ static int mtk_tx_map(struct sk_buff *sk
if (itxd == ring->last_free)
return -ENOMEM;
- itx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->txrx.txd_size);
+ itx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->tx.desc_size);
memset(itx_buf, 0, sizeof(*itx_buf));
txd_info.addr = dma_map_single(eth->dma_dev, skb->data, txd_info.size,
@@ -1553,7 +1553,7 @@ static int mtk_tx_map(struct sk_buff *sk
memset(&txd_info, 0, sizeof(struct mtk_tx_dma_desc_info));
txd_info.size = min_t(unsigned int, frag_size,
- soc->txrx.dma_max_len);
+ soc->tx.dma_max_len);
txd_info.qid = queue;
txd_info.last = i == skb_shinfo(skb)->nr_frags - 1 &&
!(frag_size - txd_info.size);
@@ -1566,7 +1566,7 @@ static int mtk_tx_map(struct sk_buff *sk
mtk_tx_set_dma_desc(dev, txd, &txd_info);
tx_buf = mtk_desc_to_tx_buf(ring, txd,
- soc->txrx.txd_size);
+ soc->tx.desc_size);
if (new_desc)
memset(tx_buf, 0, sizeof(*tx_buf));
tx_buf->data = (void *)MTK_DMA_DUMMY_DESC;
@@ -1609,7 +1609,7 @@ static int mtk_tx_map(struct sk_buff *sk
} else {
int next_idx;
- next_idx = NEXT_DESP_IDX(txd_to_idx(ring, txd, soc->txrx.txd_size),
+ next_idx = NEXT_DESP_IDX(txd_to_idx(ring, txd, soc->tx.desc_size),
ring->dma_size);
mtk_w32(eth, next_idx, MT7628_TX_CTX_IDX0);
}
@@ -1618,7 +1618,7 @@ static int mtk_tx_map(struct sk_buff *sk
err_dma:
do {
- tx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->txrx.txd_size);
+ tx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->tx.desc_size);
/* unmap dma */
mtk_tx_unmap(eth, tx_buf, NULL, false);
@@ -1643,7 +1643,7 @@ static int mtk_cal_txd_req(struct mtk_et
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
frag = &skb_shinfo(skb)->frags[i];
nfrags += DIV_ROUND_UP(skb_frag_size(frag),
- eth->soc->txrx.dma_max_len);
+ eth->soc->tx.dma_max_len);
}
} else {
nfrags += skb_shinfo(skb)->nr_frags;
@@ -1784,7 +1784,7 @@ static struct mtk_rx_ring *mtk_get_rx_ri
ring = &eth->rx_ring[i];
idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size);
- rxd = ring->dma + idx * eth->soc->txrx.rxd_size;
+ rxd = ring->dma + idx * eth->soc->rx.desc_size;
if (rxd->rxd2 & RX_DMA_DONE) {
ring->calc_idx_update = true;
return ring;
@@ -1952,7 +1952,7 @@ static int mtk_xdp_submit_frame(struct m
}
htxd = txd;
- tx_buf = mtk_desc_to_tx_buf(ring, txd, soc->txrx.txd_size);
+ tx_buf = mtk_desc_to_tx_buf(ring, txd, soc->tx.desc_size);
memset(tx_buf, 0, sizeof(*tx_buf));
htx_buf = tx_buf;
@@ -1971,7 +1971,7 @@ static int mtk_xdp_submit_frame(struct m
goto unmap;
tx_buf = mtk_desc_to_tx_buf(ring, txd,
- soc->txrx.txd_size);
+ soc->tx.desc_size);
memset(tx_buf, 0, sizeof(*tx_buf));
n_desc++;
}
@@ -2009,7 +2009,7 @@ static int mtk_xdp_submit_frame(struct m
} else {
int idx;
- idx = txd_to_idx(ring, txd, soc->txrx.txd_size);
+ idx = txd_to_idx(ring, txd, soc->tx.desc_size);
mtk_w32(eth, NEXT_DESP_IDX(idx, ring->dma_size),
MT7628_TX_CTX_IDX0);
}
@@ -2020,7 +2020,7 @@ static int mtk_xdp_submit_frame(struct m
unmap:
while (htxd != txd) {
- tx_buf = mtk_desc_to_tx_buf(ring, htxd, soc->txrx.txd_size);
+ tx_buf = mtk_desc_to_tx_buf(ring, htxd, soc->tx.desc_size);
mtk_tx_unmap(eth, tx_buf, NULL, false);
htxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU;
@@ -2151,7 +2151,7 @@ static int mtk_poll_rx(struct napi_struc
goto rx_done;
idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size);
- rxd = ring->dma + idx * eth->soc->txrx.rxd_size;
+ rxd = ring->dma + idx * eth->soc->rx.desc_size;
data = ring->data[idx];
if (!mtk_rx_get_desc(eth, &trxd, rxd))
@@ -2286,7 +2286,7 @@ static int mtk_poll_rx(struct napi_struc
rxdcsum = &trxd.rxd4;
}
- if (*rxdcsum & eth->soc->txrx.rx_dma_l4_valid)
+ if (*rxdcsum & eth->soc->rx.dma_l4_valid)
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb_checksum_none_assert(skb);
@@ -2410,7 +2410,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
break;
tx_buf = mtk_desc_to_tx_buf(ring, desc,
- eth->soc->txrx.txd_size);
+ eth->soc->tx.desc_size);
if (!tx_buf->data)
break;
@@ -2461,7 +2461,7 @@ static int mtk_poll_tx_pdma(struct mtk_e
}
mtk_tx_unmap(eth, tx_buf, &bq, true);
- desc = ring->dma + cpu * eth->soc->txrx.txd_size;
+ desc = ring->dma + cpu * eth->soc->tx.desc_size;
ring->last_free = desc;
atomic_inc(&ring->free_count);
@@ -2551,7 +2551,7 @@ static int mtk_napi_rx(struct napi_struc
do {
int rx_done;
- mtk_w32(eth, eth->soc->txrx.rx_irq_done_mask,
+ mtk_w32(eth, eth->soc->rx.irq_done_mask,
reg_map->pdma.irq_status);
rx_done = mtk_poll_rx(napi, budget - rx_done_total, eth);
rx_done_total += rx_done;
@@ -2567,10 +2567,10 @@ static int mtk_napi_rx(struct napi_struc
return budget;
} while (mtk_r32(eth, reg_map->pdma.irq_status) &
- eth->soc->txrx.rx_irq_done_mask);
+ eth->soc->rx.irq_done_mask);
if (napi_complete_done(napi, rx_done_total))
- mtk_rx_irq_enable(eth, eth->soc->txrx.rx_irq_done_mask);
+ mtk_rx_irq_enable(eth, eth->soc->rx.irq_done_mask);
return rx_done_total;
}
@@ -2579,7 +2579,7 @@ static int mtk_tx_alloc(struct mtk_eth *
{
const struct mtk_soc_data *soc = eth->soc;
struct mtk_tx_ring *ring = &eth->tx_ring;
- int i, sz = soc->txrx.txd_size;
+ int i, sz = soc->tx.desc_size;
struct mtk_tx_dma_v2 *txd;
int ring_size;
u32 ofs, val;
@@ -2702,14 +2702,14 @@ static void mtk_tx_clean(struct mtk_eth
}
if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && ring->dma) {
dma_free_coherent(eth->dma_dev,
- ring->dma_size * soc->txrx.txd_size,
+ ring->dma_size * soc->tx.desc_size,
ring->dma, ring->phys);
ring->dma = NULL;
}
if (ring->dma_pdma) {
dma_free_coherent(eth->dma_dev,
- ring->dma_size * soc->txrx.txd_size,
+ ring->dma_size * soc->tx.desc_size,
ring->dma_pdma, ring->phys_pdma);
ring->dma_pdma = NULL;
}
@@ -2764,15 +2764,15 @@ static int mtk_rx_alloc(struct mtk_eth *
if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM) ||
rx_flag != MTK_RX_FLAGS_NORMAL) {
ring->dma = dma_alloc_coherent(eth->dma_dev,
- rx_dma_size * eth->soc->txrx.rxd_size,
- &ring->phys, GFP_KERNEL);
+ rx_dma_size * eth->soc->rx.desc_size,
+ &ring->phys, GFP_KERNEL);
} else {
struct mtk_tx_ring *tx_ring = &eth->tx_ring;
ring->dma = tx_ring->dma + tx_ring_size *
- eth->soc->txrx.txd_size * (ring_no + 1);
+ eth->soc->tx.desc_size * (ring_no + 1);
ring->phys = tx_ring->phys + tx_ring_size *
- eth->soc->txrx.txd_size * (ring_no + 1);
+ eth->soc->tx.desc_size * (ring_no + 1);
}
if (!ring->dma)
@@ -2783,7 +2783,7 @@ static int mtk_rx_alloc(struct mtk_eth *
dma_addr_t dma_addr;
void *data;
- rxd = ring->dma + i * eth->soc->txrx.rxd_size;
+ rxd = ring->dma + i * eth->soc->rx.desc_size;
if (ring->page_pool) {
data = mtk_page_pool_get_buff(ring->page_pool,
&dma_addr, GFP_KERNEL);
@@ -2874,7 +2874,7 @@ static void mtk_rx_clean(struct mtk_eth
if (!ring->data[i])
continue;
- rxd = ring->dma + i * eth->soc->txrx.rxd_size;
+ rxd = ring->dma + i * eth->soc->rx.desc_size;
if (!rxd->rxd1)
continue;
@@ -2891,7 +2891,7 @@ static void mtk_rx_clean(struct mtk_eth
if (!in_sram && ring->dma) {
dma_free_coherent(eth->dma_dev,
- ring->dma_size * eth->soc->txrx.rxd_size,
+ ring->dma_size * eth->soc->rx.desc_size,
ring->dma, ring->phys);
ring->dma = NULL;
}
@@ -3254,7 +3254,7 @@ static void mtk_dma_free(struct mtk_eth
netdev_reset_queue(eth->netdev[i]);
if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && eth->scratch_ring) {
dma_free_coherent(eth->dma_dev,
- MTK_QDMA_RING_SIZE * soc->txrx.txd_size,
+ MTK_QDMA_RING_SIZE * soc->tx.desc_size,
eth->scratch_ring, eth->phy_scratch_ring);
eth->scratch_ring = NULL;
eth->phy_scratch_ring = 0;
@@ -3304,7 +3304,7 @@ static irqreturn_t mtk_handle_irq_rx(int
eth->rx_events++;
if (likely(napi_schedule_prep(&eth->rx_napi))) {
- mtk_rx_irq_disable(eth, eth->soc->txrx.rx_irq_done_mask);
+ mtk_rx_irq_disable(eth, eth->soc->rx.irq_done_mask);
__napi_schedule(&eth->rx_napi);
}
@@ -3330,9 +3330,9 @@ static irqreturn_t mtk_handle_irq(int ir
const struct mtk_reg_map *reg_map = eth->soc->reg_map;
if (mtk_r32(eth, reg_map->pdma.irq_mask) &
- eth->soc->txrx.rx_irq_done_mask) {
+ eth->soc->rx.irq_done_mask) {
if (mtk_r32(eth, reg_map->pdma.irq_status) &
- eth->soc->txrx.rx_irq_done_mask)
+ eth->soc->rx.irq_done_mask)
mtk_handle_irq_rx(irq, _eth);
}
if (mtk_r32(eth, reg_map->tx_irq_mask) & MTK_TX_DONE_INT) {
@@ -3350,10 +3350,10 @@ static void mtk_poll_controller(struct n
struct mtk_eth *eth = mac->hw;
mtk_tx_irq_disable(eth, MTK_TX_DONE_INT);
- mtk_rx_irq_disable(eth, eth->soc->txrx.rx_irq_done_mask);
+ mtk_rx_irq_disable(eth, eth->soc->rx.irq_done_mask);
mtk_handle_irq_rx(eth->irq[2], dev);
mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
- mtk_rx_irq_enable(eth, eth->soc->txrx.rx_irq_done_mask);
+ mtk_rx_irq_enable(eth, eth->soc->rx.irq_done_mask);
}
#endif
@@ -3516,7 +3516,7 @@ static int mtk_open(struct net_device *d
napi_enable(&eth->tx_napi);
napi_enable(&eth->rx_napi);
mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
- mtk_rx_irq_enable(eth, soc->txrx.rx_irq_done_mask);
+ mtk_rx_irq_enable(eth, soc->rx.irq_done_mask);
refcount_set(&eth->dma_refcnt, 1);
}
else
@@ -3599,7 +3599,7 @@ static int mtk_stop(struct net_device *d
mtk_gdm_config(eth, MTK_GDMA_DROP_ALL);
mtk_tx_irq_disable(eth, MTK_TX_DONE_INT);
- mtk_rx_irq_disable(eth, eth->soc->txrx.rx_irq_done_mask);
+ mtk_rx_irq_disable(eth, eth->soc->rx.irq_done_mask);
napi_disable(&eth->tx_napi);
napi_disable(&eth->rx_napi);
@@ -4075,9 +4075,9 @@ static int mtk_hw_init(struct mtk_eth *e
/* FE int grouping */
mtk_w32(eth, MTK_TX_DONE_INT, reg_map->pdma.int_grp);
- mtk_w32(eth, eth->soc->txrx.rx_irq_done_mask, reg_map->pdma.int_grp + 4);
+ mtk_w32(eth, eth->soc->rx.irq_done_mask, reg_map->pdma.int_grp + 4);
mtk_w32(eth, MTK_TX_DONE_INT, reg_map->qdma.int_grp);
- mtk_w32(eth, eth->soc->txrx.rx_irq_done_mask, reg_map->qdma.int_grp + 4);
+ mtk_w32(eth, eth->soc->rx.irq_done_mask, reg_map->qdma.int_grp + 4);
mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP);
if (mtk_is_netsys_v3_or_greater(eth)) {
@@ -5172,11 +5172,15 @@ static const struct mtk_soc_data mt2701_
.required_clks = MT7623_CLKS_BITMAP,
.required_pctl = true,
.version = 1,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma),
- .rxd_size = sizeof(struct mtk_rx_dma),
- .rx_irq_done_mask = MTK_RX_DONE_INT,
- .rx_dma_l4_valid = RX_DMA_L4_VALID,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
+ .dma_l4_valid = RX_DMA_L4_VALID,
.dma_max_len = MTK_TX_DMA_BUF_LEN,
.dma_len_offset = 16,
},
@@ -5192,11 +5196,15 @@ static const struct mtk_soc_data mt7621_
.offload_version = 1,
.hash_offset = 2,
.foe_entry_size = MTK_FOE_ENTRY_V1_SIZE,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma),
- .rxd_size = sizeof(struct mtk_rx_dma),
- .rx_irq_done_mask = MTK_RX_DONE_INT,
- .rx_dma_l4_valid = RX_DMA_L4_VALID,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
+ .dma_l4_valid = RX_DMA_L4_VALID,
.dma_max_len = MTK_TX_DMA_BUF_LEN,
.dma_len_offset = 16,
},
@@ -5214,11 +5222,15 @@ static const struct mtk_soc_data mt7622_
.hash_offset = 2,
.has_accounting = true,
.foe_entry_size = MTK_FOE_ENTRY_V1_SIZE,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma),
- .rxd_size = sizeof(struct mtk_rx_dma),
- .rx_irq_done_mask = MTK_RX_DONE_INT,
- .rx_dma_l4_valid = RX_DMA_L4_VALID,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
+ .dma_l4_valid = RX_DMA_L4_VALID,
.dma_max_len = MTK_TX_DMA_BUF_LEN,
.dma_len_offset = 16,
},
@@ -5235,11 +5247,15 @@ static const struct mtk_soc_data mt7623_
.hash_offset = 2,
.foe_entry_size = MTK_FOE_ENTRY_V1_SIZE,
.disable_pll_modes = true,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma),
- .rxd_size = sizeof(struct mtk_rx_dma),
- .rx_irq_done_mask = MTK_RX_DONE_INT,
- .rx_dma_l4_valid = RX_DMA_L4_VALID,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
+ .dma_l4_valid = RX_DMA_L4_VALID,
.dma_max_len = MTK_TX_DMA_BUF_LEN,
.dma_len_offset = 16,
},
@@ -5254,11 +5270,15 @@ static const struct mtk_soc_data mt7629_
.required_pctl = false,
.has_accounting = true,
.version = 1,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma),
- .rxd_size = sizeof(struct mtk_rx_dma),
- .rx_irq_done_mask = MTK_RX_DONE_INT,
- .rx_dma_l4_valid = RX_DMA_L4_VALID,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
+ .dma_l4_valid = RX_DMA_L4_VALID,
.dma_max_len = MTK_TX_DMA_BUF_LEN,
.dma_len_offset = 16,
},
@@ -5276,11 +5296,15 @@ static const struct mtk_soc_data mt7981_
.hash_offset = 4,
.has_accounting = true,
.foe_entry_size = MTK_FOE_ENTRY_V2_SIZE,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma_v2),
- .rxd_size = sizeof(struct mtk_rx_dma_v2),
- .rx_irq_done_mask = MTK_RX_DONE_INT_V2,
- .rx_dma_l4_valid = RX_DMA_L4_VALID_V2,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma_v2),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
+ .dma_len_offset = 8,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma_v2),
+ .irq_done_mask = MTK_RX_DONE_INT_V2,
+ .dma_l4_valid = RX_DMA_L4_VALID_V2,
.dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
.dma_len_offset = 8,
},
@@ -5298,11 +5322,15 @@ static const struct mtk_soc_data mt7986_
.hash_offset = 4,
.has_accounting = true,
.foe_entry_size = MTK_FOE_ENTRY_V2_SIZE,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma_v2),
- .rxd_size = sizeof(struct mtk_rx_dma_v2),
- .rx_irq_done_mask = MTK_RX_DONE_INT_V2,
- .rx_dma_l4_valid = RX_DMA_L4_VALID_V2,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma_v2),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
+ .dma_len_offset = 8,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma_v2),
+ .irq_done_mask = MTK_RX_DONE_INT_V2,
+ .dma_l4_valid = RX_DMA_L4_VALID_V2,
.dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
.dma_len_offset = 8,
},
@@ -5320,11 +5348,15 @@ static const struct mtk_soc_data mt7988_
.hash_offset = 4,
.has_accounting = true,
.foe_entry_size = MTK_FOE_ENTRY_V3_SIZE,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma_v2),
- .rxd_size = sizeof(struct mtk_rx_dma_v2),
- .rx_irq_done_mask = MTK_RX_DONE_INT_V2,
- .rx_dma_l4_valid = RX_DMA_L4_VALID_V2,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma_v2),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
+ .dma_len_offset = 8,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma_v2),
+ .irq_done_mask = MTK_RX_DONE_INT_V2,
+ .dma_l4_valid = RX_DMA_L4_VALID_V2,
.dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
.dma_len_offset = 8,
},
@@ -5337,11 +5369,15 @@ static const struct mtk_soc_data rt5350_
.required_clks = MT7628_CLKS_BITMAP,
.required_pctl = false,
.version = 1,
- .txrx = {
- .txd_size = sizeof(struct mtk_tx_dma),
- .rxd_size = sizeof(struct mtk_rx_dma),
- .rx_irq_done_mask = MTK_RX_DONE_INT,
- .rx_dma_l4_valid = RX_DMA_L4_VALID_PDMA,
+ .tx = {
+ .desc_size = sizeof(struct mtk_tx_dma),
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
+ },
+ .rx = {
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
+ .dma_l4_valid = RX_DMA_L4_VALID_PDMA,
.dma_max_len = MTK_TX_DMA_BUF_LEN,
.dma_len_offset = 16,
},
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -326,8 +326,8 @@
/* QDMA descriptor txd3 */
#define TX_DMA_OWNER_CPU BIT(31)
#define TX_DMA_LS0 BIT(30)
-#define TX_DMA_PLEN0(x) (((x) & eth->soc->txrx.dma_max_len) << eth->soc->txrx.dma_len_offset)
-#define TX_DMA_PLEN1(x) ((x) & eth->soc->txrx.dma_max_len)
+#define TX_DMA_PLEN0(x) (((x) & eth->soc->tx.dma_max_len) << eth->soc->tx.dma_len_offset)
+#define TX_DMA_PLEN1(x) ((x) & eth->soc->tx.dma_max_len)
#define TX_DMA_SWC BIT(14)
#define TX_DMA_PQID GENMASK(3, 0)
#define TX_DMA_ADDR64_MASK GENMASK(3, 0)
@@ -347,8 +347,8 @@
/* QDMA descriptor rxd2 */
#define RX_DMA_DONE BIT(31)
#define RX_DMA_LSO BIT(30)
-#define RX_DMA_PREP_PLEN0(x) (((x) & eth->soc->txrx.dma_max_len) << eth->soc->txrx.dma_len_offset)
-#define RX_DMA_GET_PLEN0(x) (((x) >> eth->soc->txrx.dma_len_offset) & eth->soc->txrx.dma_max_len)
+#define RX_DMA_PREP_PLEN0(x) (((x) & eth->soc->rx.dma_max_len) << eth->soc->rx.dma_len_offset)
+#define RX_DMA_GET_PLEN0(x) (((x) >> eth->soc->rx.dma_len_offset) & eth->soc->rx.dma_max_len)
#define RX_DMA_VTAG BIT(15)
#define RX_DMA_ADDR64_MASK GENMASK(3, 0)
#if IS_ENABLED(CONFIG_64BIT)
@@ -1279,10 +1279,9 @@ struct mtk_reg_map {
* @foe_entry_size Foe table entry size.
* @has_accounting Bool indicating support for accounting of
* offloaded flows.
- * @txd_size Tx DMA descriptor size.
- * @rxd_size Rx DMA descriptor size.
- * @rx_irq_done_mask Rx irq done register mask.
- * @rx_dma_l4_valid Rx DMA valid register mask.
+ * @desc_size Tx/Rx DMA descriptor size.
+ * @irq_done_mask Rx irq done register mask.
+ * @dma_l4_valid Rx DMA valid register mask.
* @dma_max_len Max DMA tx/rx buffer length.
* @dma_len_offset Tx/Rx DMA length field offset.
*/
@@ -1300,13 +1299,17 @@ struct mtk_soc_data {
bool has_accounting;
bool disable_pll_modes;
struct {
- u32 txd_size;
- u32 rxd_size;
- u32 rx_irq_done_mask;
- u32 rx_dma_l4_valid;
+ u32 desc_size;
u32 dma_max_len;
u32 dma_len_offset;
- } txrx;
+ } tx;
+ struct {
+ u32 desc_size;
+ u32 irq_done_mask;
+ u32 dma_l4_valid;
+ u32 dma_max_len;
+ u32 dma_len_offset;
+ } rx;
};
#define MTK_DMA_MONITOR_TIMEOUT msecs_to_jiffies(1000)

123
6.1/target/linux/mediatek/patches-6.1/962-net-ethernet-mediatek-use-QDMA-instead-of-ADMAv2-on-.patch Normal file
View file

@ -0,0 +1,123 @@
From: Daniel Golle <daniel@makrotopia.org>
Date: Tue, 10 Oct 2023 21:06:43 +0200
Subject: [PATCH net-next 2/2] net: ethernet: mediatek: use QDMA instead of
ADMAv2 on MT7981 and MT7986
ADMA is plagued by RX hangs which can't easily detected and happen upon
receival of a corrupted package.
Use QDMA just like on netsys v1 which is also still present and usable, and
doesn't suffer from that problem.
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 46 ++++++++++-----------
1 file changed, 23 insertions(+), 23 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -108,16 +108,16 @@ static const struct mtk_reg_map mt7986_r
.tx_irq_mask = 0x461c,
.tx_irq_status = 0x4618,
.pdma = {
- .rx_ptr = 0x6100,
- .rx_cnt_cfg = 0x6104,
- .pcrx_ptr = 0x6108,
- .glo_cfg = 0x6204,
- .rst_idx = 0x6208,
- .delay_irq = 0x620c,
- .irq_status = 0x6220,
- .irq_mask = 0x6228,
- .adma_rx_dbg0 = 0x6238,
- .int_grp = 0x6250,
+ .rx_ptr = 0x4100,
+ .rx_cnt_cfg = 0x4104,
+ .pcrx_ptr = 0x4108,
+ .glo_cfg = 0x4204,
+ .rst_idx = 0x4208,
+ .delay_irq = 0x420c,
+ .irq_status = 0x4220,
+ .irq_mask = 0x4228,
+ .adma_rx_dbg0 = 0x4238,
+ .int_grp = 0x4250,
},
.qdma = {
.qtx_cfg = 0x4400,
@@ -1206,7 +1206,7 @@ static bool mtk_rx_get_desc(struct mtk_e
rxd->rxd1 = READ_ONCE(dma_rxd->rxd1);
rxd->rxd3 = READ_ONCE(dma_rxd->rxd3);
rxd->rxd4 = READ_ONCE(dma_rxd->rxd4);
- if (mtk_is_netsys_v2_or_greater(eth)) {
+ if (mtk_is_netsys_v3_or_greater(eth)) {
rxd->rxd5 = READ_ONCE(dma_rxd->rxd5);
rxd->rxd6 = READ_ONCE(dma_rxd->rxd6);
}
@@ -2158,7 +2158,7 @@ static int mtk_poll_rx(struct napi_struc
break;
/* find out which mac the packet come from. values start at 1 */
- if (mtk_is_netsys_v2_or_greater(eth)) {
+ if (mtk_is_netsys_v3_or_greater(eth)) {
u32 val = RX_DMA_GET_SPORT_V2(trxd.rxd5);
switch (val) {
@@ -2270,7 +2270,7 @@ static int mtk_poll_rx(struct napi_struc
skb->dev = netdev;
bytes += skb->len;
- if (mtk_is_netsys_v2_or_greater(eth)) {
+ if (mtk_is_netsys_v3_or_greater(eth)) {
reason = FIELD_GET(MTK_RXD5_PPE_CPU_REASON, trxd.rxd5);
hash = trxd.rxd5 & MTK_RXD5_FOE_ENTRY;
if (hash != MTK_RXD5_FOE_ENTRY)
@@ -2820,7 +2820,7 @@ static int mtk_rx_alloc(struct mtk_eth *
rxd->rxd3 = 0;
rxd->rxd4 = 0;
- if (mtk_is_netsys_v2_or_greater(eth)) {
+ if (mtk_is_netsys_v3_or_greater(eth)) {
rxd->rxd5 = 0;
rxd->rxd6 = 0;
rxd->rxd7 = 0;
@@ -4021,7 +4021,7 @@ static int mtk_hw_init(struct mtk_eth *e
else
mtk_hw_reset(eth);
- if (mtk_is_netsys_v2_or_greater(eth)) {
+ if (mtk_is_netsys_v3_or_greater(eth)) {
/* Set FE to PDMAv2 if necessary */
val = mtk_r32(eth, MTK_FE_GLO_MISC);
mtk_w32(eth, val | BIT(4), MTK_FE_GLO_MISC);
@@ -5302,11 +5302,11 @@ static const struct mtk_soc_data mt7981_
.dma_len_offset = 8,
},
.rx = {
- .desc_size = sizeof(struct mtk_rx_dma_v2),
- .irq_done_mask = MTK_RX_DONE_INT_V2,
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
.dma_l4_valid = RX_DMA_L4_VALID_V2,
- .dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
- .dma_len_offset = 8,
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
},
};
@@ -5328,11 +5328,11 @@ static const struct mtk_soc_data mt7986_
.dma_len_offset = 8,
},
.rx = {
- .desc_size = sizeof(struct mtk_rx_dma_v2),
- .irq_done_mask = MTK_RX_DONE_INT_V2,
+ .desc_size = sizeof(struct mtk_rx_dma),
+ .irq_done_mask = MTK_RX_DONE_INT,
.dma_l4_valid = RX_DMA_L4_VALID_V2,
- .dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
- .dma_len_offset = 8,
+ .dma_max_len = MTK_TX_DMA_BUF_LEN,
+ .dma_len_offset = 16,
},
};