diff options
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/descs.h | 9 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/hwif.h | 7 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 5 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 199 | ||||
-rw-r--r-- | include/linux/stmmac.h | 1 |
5 files changed, 156 insertions, 65 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/descs.h b/drivers/net/ethernet/stmicro/stmmac/descs.h index 9f0b9a9e63b3..49d6a866244f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/descs.h +++ b/drivers/net/ethernet/stmicro/stmmac/descs.h @@ -171,6 +171,15 @@ struct dma_extended_desc { __le32 des7; /* Tx/Rx Timestamp High */ }; +/* Enhanced descriptor for TBS */ +struct dma_edesc { + __le32 des4; + __le32 des5; + __le32 des6; + __le32 des7; + struct dma_desc basic; +}; + /* Transmit checksum insertion control */ #define TX_CIC_FULL 3 /* Include IP header and pseudoheader */ diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h index 905a6f0edaca..71c23cbd7af8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/hwif.h +++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h @@ -29,6 +29,7 @@ struct stmmac_extra_stats; struct stmmac_safety_stats; struct dma_desc; struct dma_extended_desc; +struct dma_edesc; /* Descriptors helpers */ struct stmmac_desc_ops { @@ -95,6 +96,7 @@ struct stmmac_desc_ops { void (*set_vlan_tag)(struct dma_desc *p, u16 tag, u16 inner_tag, u32 inner_type); void (*set_vlan)(struct dma_desc *p, u32 type); + void (*set_tbs)(struct dma_edesc *p, u32 sec, u32 nsec); }; #define stmmac_init_rx_desc(__priv, __args...) \ @@ -157,6 +159,8 @@ struct stmmac_desc_ops { stmmac_do_void_callback(__priv, desc, set_vlan_tag, __args) #define stmmac_set_desc_vlan(__priv, __args...) \ stmmac_do_void_callback(__priv, desc, set_vlan, __args) +#define stmmac_set_desc_tbs(__priv, __args...) \ + stmmac_do_void_callback(__priv, desc, set_tbs, __args) struct stmmac_dma_cfg; struct dma_features; @@ -210,6 +214,7 @@ struct stmmac_dma_ops { void (*qmode)(void __iomem *ioaddr, u32 channel, u8 qmode); void (*set_bfsize)(void __iomem *ioaddr, int bfsize, u32 chan); void (*enable_sph)(void __iomem *ioaddr, bool en, u32 chan); + int (*enable_tbs)(void __iomem *ioaddr, bool en, u32 chan); }; #define stmmac_reset(__priv, __args...) \ @@ -268,6 +273,8 @@ struct stmmac_dma_ops { stmmac_do_void_callback(__priv, dma, set_bfsize, __args) #define stmmac_enable_sph(__priv, __args...) \ stmmac_do_void_callback(__priv, dma, enable_sph, __args) +#define stmmac_enable_tbs(__priv, __args...) \ + stmmac_do_callback(__priv, dma, enable_tbs, __args) struct mac_device_info; struct net_device; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index f98c5eefb382..9c02fc754bf1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -39,13 +39,18 @@ struct stmmac_tx_info { bool is_jumbo; }; +#define STMMAC_TBS_AVAIL BIT(0) +#define STMMAC_TBS_EN BIT(1) + /* Frequently used values are kept adjacent for cache effect */ struct stmmac_tx_queue { u32 tx_count_frames; + int tbs; struct timer_list txtimer; u32 queue_index; struct stmmac_priv *priv_data; struct dma_extended_desc *dma_etx ____cacheline_aligned_in_smp; + struct dma_edesc *dma_entx; struct dma_desc *dma_tx; struct sk_buff **tx_skbuff; struct stmmac_tx_info *tx_skbuff_dma; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index f113138df0d9..baffb4e8d99a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1090,6 +1090,8 @@ static void stmmac_display_tx_rings(struct stmmac_priv *priv) if (priv->extend_desc) head_tx = (void *)tx_q->dma_etx; + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + head_tx = (void *)tx_q->dma_entx; else head_tx = (void *)tx_q->dma_tx; @@ -1163,13 +1165,19 @@ static void stmmac_clear_tx_descriptors(struct stmmac_priv *priv, u32 queue) int i; /* Clear the TX descriptors */ - for (i = 0; i < DMA_TX_SIZE; i++) + for (i = 0; i < DMA_TX_SIZE; i++) { + int last = (i == (DMA_TX_SIZE - 1)); + struct dma_desc *p; + if (priv->extend_desc) - stmmac_init_tx_desc(priv, &tx_q->dma_etx[i].basic, - priv->mode, (i == DMA_TX_SIZE - 1)); + p = &tx_q->dma_etx[i].basic; + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + p = &tx_q->dma_entx[i].basic; else - stmmac_init_tx_desc(priv, &tx_q->dma_tx[i], - priv->mode, (i == DMA_TX_SIZE - 1)); + p = &tx_q->dma_tx[i]; + + stmmac_init_tx_desc(priv, p, priv->mode, last); + } } /** @@ -1383,7 +1391,7 @@ static int init_dma_tx_desc_rings(struct net_device *dev) if (priv->extend_desc) stmmac_mode_init(priv, tx_q->dma_etx, tx_q->dma_tx_phy, DMA_TX_SIZE, 1); - else + else if (!(tx_q->tbs & STMMAC_TBS_AVAIL)) stmmac_mode_init(priv, tx_q->dma_tx, tx_q->dma_tx_phy, DMA_TX_SIZE, 0); } @@ -1392,6 +1400,8 @@ static int init_dma_tx_desc_rings(struct net_device *dev) struct dma_desc *p; if (priv->extend_desc) p = &((tx_q->dma_etx + i)->basic); + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + p = &((tx_q->dma_entx + i)->basic); else p = tx_q->dma_tx + i; @@ -1511,19 +1521,26 @@ static void free_dma_tx_desc_resources(struct stmmac_priv *priv) /* Free TX queue resources */ for (queue = 0; queue < tx_count; queue++) { struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue]; + size_t size; + void *addr; /* Release the DMA TX socket buffers */ dma_free_tx_skbufs(priv, queue); - /* Free DMA regions of consistent memory previously allocated */ - if (!priv->extend_desc) - dma_free_coherent(priv->device, - DMA_TX_SIZE * sizeof(struct dma_desc), - tx_q->dma_tx, tx_q->dma_tx_phy); - else - dma_free_coherent(priv->device, DMA_TX_SIZE * - sizeof(struct dma_extended_desc), - tx_q->dma_etx, tx_q->dma_tx_phy); + if (priv->extend_desc) { + size = sizeof(struct dma_extended_desc); + addr = tx_q->dma_etx; + } else if (tx_q->tbs & STMMAC_TBS_AVAIL) { + size = sizeof(struct dma_edesc); + addr = tx_q->dma_entx; + } else { + size = sizeof(struct dma_desc); + addr = tx_q->dma_tx; + } + + size *= DMA_TX_SIZE; + + dma_free_coherent(priv->device, size, addr, tx_q->dma_tx_phy); kfree(tx_q->tx_skbuff_dma); kfree(tx_q->tx_skbuff); @@ -1616,6 +1633,8 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv) /* TX queues buffers and DMA */ for (queue = 0; queue < tx_count; queue++) { struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue]; + size_t size; + void *addr; tx_q->queue_index = queue; tx_q->priv_data = priv; @@ -1632,28 +1651,32 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv) if (!tx_q->tx_skbuff) goto err_dma; - if (priv->extend_desc) { - tx_q->dma_etx = dma_alloc_coherent(priv->device, - DMA_TX_SIZE * sizeof(struct dma_extended_desc), - &tx_q->dma_tx_phy, - GFP_KERNEL); - if (!tx_q->dma_etx) - goto err_dma; - } else { - tx_q->dma_tx = dma_alloc_coherent(priv->device, - DMA_TX_SIZE * sizeof(struct dma_desc), - &tx_q->dma_tx_phy, - GFP_KERNEL); - if (!tx_q->dma_tx) - goto err_dma; - } + if (priv->extend_desc) + size = sizeof(struct dma_extended_desc); + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + size = sizeof(struct dma_edesc); + else + size = sizeof(struct dma_desc); + + size *= DMA_TX_SIZE; + + addr = dma_alloc_coherent(priv->device, size, + &tx_q->dma_tx_phy, GFP_KERNEL); + if (!addr) + goto err_dma; + + if (priv->extend_desc) + tx_q->dma_etx = addr; + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + tx_q->dma_entx = addr; + else + tx_q->dma_tx = addr; } return 0; err_dma: free_dma_tx_desc_resources(priv); - return ret; } @@ -1885,6 +1908,8 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue) if (priv->extend_desc) p = (struct dma_desc *)(tx_q->dma_etx + entry); + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + p = &tx_q->dma_entx[entry].basic; else p = tx_q->dma_tx + entry; @@ -1983,19 +2008,12 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue) static void stmmac_tx_err(struct stmmac_priv *priv, u32 chan) { struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan]; - int i; netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, chan)); stmmac_stop_tx_dma(priv, chan); dma_free_tx_skbufs(priv, chan); - for (i = 0; i < DMA_TX_SIZE; i++) - if (priv->extend_desc) - stmmac_init_tx_desc(priv, &tx_q->dma_etx[i].basic, - priv->mode, (i == DMA_TX_SIZE - 1)); - else - stmmac_init_tx_desc(priv, &tx_q->dma_tx[i], - priv->mode, (i == DMA_TX_SIZE - 1)); + stmmac_clear_tx_descriptors(priv, chan); tx_q->dirty_tx = 0; tx_q->cur_tx = 0; tx_q->mss = 0; @@ -2632,6 +2650,14 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp) if (priv->dma_cap.vlins) stmmac_enable_vlan(priv, priv->hw, STMMAC_VLAN_INSERT); + /* TBS */ + for (chan = 0; chan < tx_cnt; chan++) { + struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan]; + int enable = tx_q->tbs & STMMAC_TBS_AVAIL; + + stmmac_enable_tbs(priv, priv->ioaddr, enable, chan); + } + /* Start the ball rolling... */ stmmac_start_all_dma(priv); @@ -2689,6 +2715,16 @@ static int stmmac_open(struct net_device *dev) priv->rx_copybreak = STMMAC_RX_COPYBREAK; + /* Earlier check for TBS */ + for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++) { + struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan]; + int tbs_en = priv->plat->tx_queues_cfg[chan].tbs_en; + + tx_q->tbs |= tbs_en ? STMMAC_TBS_AVAIL : 0; + if (stmmac_enable_tbs(priv, priv->ioaddr, tbs_en, chan)) + tx_q->tbs &= ~STMMAC_TBS_AVAIL; + } + ret = alloc_dma_desc_resources(priv); if (ret < 0) { netdev_err(priv->dev, "%s: DMA descriptors allocation failed\n", @@ -2837,7 +2873,11 @@ static bool stmmac_vlan_insert(struct stmmac_priv *priv, struct sk_buff *skb, tag = skb_vlan_tag_get(skb); - p = tx_q->dma_tx + tx_q->cur_tx; + if (tx_q->tbs & STMMAC_TBS_AVAIL) + p = &tx_q->dma_entx[tx_q->cur_tx].basic; + else + p = &tx_q->dma_tx[tx_q->cur_tx]; + if (stmmac_set_desc_vlan_tag(priv, p, tag, inner_tag, inner_type)) return false; @@ -2872,7 +2912,11 @@ static void stmmac_tso_allocator(struct stmmac_priv *priv, dma_addr_t des, tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE); WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]); - desc = tx_q->dma_tx + tx_q->cur_tx; + + if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc = &tx_q->dma_entx[tx_q->cur_tx].basic; + else + desc = &tx_q->dma_tx[tx_q->cur_tx]; curr_addr = des + (total_len - tmp_len); if (priv->dma_cap.addr64 <= 32) @@ -2923,13 +2967,13 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) { struct dma_desc *desc, *first, *mss_desc = NULL; struct stmmac_priv *priv = netdev_priv(dev); + int desc_size, tmp_pay_len = 0, first_tx; int nfrags = skb_shinfo(skb)->nr_frags; u32 queue = skb_get_queue_mapping(skb); unsigned int first_entry, tx_packets; - int tmp_pay_len = 0, first_tx; struct stmmac_tx_queue *tx_q; - u8 proto_hdr_len, hdr; bool has_vlan, set_ic; + u8 proto_hdr_len, hdr; u32 pay_len, mss; dma_addr_t des; int i; @@ -2966,7 +3010,11 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) /* set new MSS value if needed */ if (mss != tx_q->mss) { - mss_desc = tx_q->dma_tx + tx_q->cur_tx; + if (tx_q->tbs & STMMAC_TBS_AVAIL) + mss_desc = &tx_q->dma_entx[tx_q->cur_tx].basic; + else + mss_desc = &tx_q->dma_tx[tx_q->cur_tx]; + stmmac_set_mss(priv, mss_desc, mss); tx_q->mss = mss; tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE); @@ -2986,7 +3034,10 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) first_entry = tx_q->cur_tx; WARN_ON(tx_q->tx_skbuff[first_entry]); - desc = tx_q->dma_tx + first_entry; + if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc = &tx_q->dma_entx[first_entry].basic; + else + desc = &tx_q->dma_tx[first_entry]; first = desc; if (has_vlan) @@ -3058,7 +3109,11 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) set_ic = false; if (set_ic) { - desc = &tx_q->dma_tx[tx_q->cur_tx]; + if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc = &tx_q->dma_entx[tx_q->cur_tx].basic; + else + desc = &tx_q->dma_tx[tx_q->cur_tx]; + tx_q->tx_count_frames = 0; stmmac_set_tx_ic(priv, desc); priv->xstats.tx_set_ic_bit++; @@ -3121,16 +3176,18 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) pr_info("%s: curr=%d dirty=%d f=%d, e=%d, f_p=%p, nfrags %d\n", __func__, tx_q->cur_tx, tx_q->dirty_tx, first_entry, tx_q->cur_tx, first, nfrags); - - stmmac_display_ring(priv, (void *)tx_q->dma_tx, DMA_TX_SIZE, 0); - pr_info(">>> frame to be transmitted: "); print_pkt(skb->data, skb_headlen(skb)); } netdev_tx_sent_queue(netdev_get_tx_queue(dev, queue), skb->len); - tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * sizeof(*desc)); + if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc_size = sizeof(struct dma_edesc); + else + desc_size = sizeof(struct dma_desc); + + tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * desc_size); stmmac_set_tx_tail_ptr(priv, priv->ioaddr, tx_q->tx_tail_addr, queue); stmmac_tx_timer_arm(priv, queue); @@ -3160,10 +3217,11 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) u32 queue = skb_get_queue_mapping(skb); int nfrags = skb_shinfo(skb)->nr_frags; int gso = skb_shinfo(skb)->gso_type; + struct dma_edesc *tbs_desc = NULL; + int entry, desc_size, first_tx; struct dma_desc *desc, *first; struct stmmac_tx_queue *tx_q; bool has_vlan, set_ic; - int entry, first_tx; dma_addr_t des; tx_q = &priv->tx_queue[queue]; @@ -3203,6 +3261,8 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) if (likely(priv->extend_desc)) desc = (struct dma_desc *)(tx_q->dma_etx + entry); + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc = &tx_q->dma_entx[entry].basic; else desc = tx_q->dma_tx + entry; @@ -3232,6 +3292,8 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) if (likely(priv->extend_desc)) desc = (struct dma_desc *)(tx_q->dma_etx + entry); + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc = &tx_q->dma_entx[entry].basic; else desc = tx_q->dma_tx + entry; @@ -3278,6 +3340,8 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) if (set_ic) { if (likely(priv->extend_desc)) desc = &tx_q->dma_etx[entry].basic; + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc = &tx_q->dma_entx[entry].basic; else desc = &tx_q->dma_tx[entry]; @@ -3295,20 +3359,11 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) tx_q->cur_tx = entry; if (netif_msg_pktdata(priv)) { - void *tx_head; - netdev_dbg(priv->dev, "%s: curr=%d dirty=%d f=%d, e=%d, first=%p, nfrags=%d", __func__, tx_q->cur_tx, tx_q->dirty_tx, first_entry, entry, first, nfrags); - if (priv->extend_desc) - tx_head = (void *)tx_q->dma_etx; - else - tx_head = (void *)tx_q->dma_tx; - - stmmac_display_ring(priv, tx_head, DMA_TX_SIZE, false); - netdev_dbg(priv->dev, ">>> frame to be transmitted: "); print_pkt(skb->data, skb->len); } @@ -3354,12 +3409,19 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) /* Prepare the first descriptor setting the OWN bit too */ stmmac_prepare_tx_desc(priv, first, 1, nopaged_len, - csum_insertion, priv->mode, 1, last_segment, + csum_insertion, priv->mode, 0, last_segment, skb->len); - } else { - stmmac_set_tx_owner(priv, first); } + if (tx_q->tbs & STMMAC_TBS_EN) { + struct timespec64 ts = ns_to_timespec64(skb->tstamp); + + tbs_desc = &tx_q->dma_entx[first_entry]; + stmmac_set_desc_tbs(priv, tbs_desc, ts.tv_sec, ts.tv_nsec); + } + + stmmac_set_tx_owner(priv, first); + /* The own bit must be the latest setting done when prepare the * descriptor and then barrier is needed to make sure that * all is coherent before granting the DMA engine. @@ -3370,7 +3432,14 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) stmmac_enable_dma_transmission(priv, priv->ioaddr); - tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * sizeof(*desc)); + if (likely(priv->extend_desc)) + desc_size = sizeof(struct dma_extended_desc); + else if (tx_q->tbs & STMMAC_TBS_AVAIL) + desc_size = sizeof(struct dma_edesc); + else + desc_size = sizeof(struct dma_desc); + + tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * desc_size); stmmac_set_tx_tail_ptr(priv, priv->ioaddr, tx_q->tx_tail_addr, queue); stmmac_tx_timer_arm(priv, queue); @@ -4193,7 +4262,7 @@ static int stmmac_rings_status_show(struct seq_file *seq, void *v) seq_printf(seq, "Extended descriptor ring:\n"); sysfs_display_ring((void *)tx_q->dma_etx, DMA_TX_SIZE, 1, seq); - } else { + } else if (!(tx_q->tbs & STMMAC_TBS_AVAIL)) { seq_printf(seq, "Descriptor ring:\n"); sysfs_display_ring((void *)tx_q->dma_tx, DMA_TX_SIZE, 0, seq); diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index 0531afa9b21e..19190c609282 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -139,6 +139,7 @@ struct stmmac_txq_cfg { u32 low_credit; bool use_prio; u32 prio; + int tbs_en; }; struct plat_stmmacenet_data { |