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Miller" , Ivan Khoronzhuk , Jiri Pirko CC: Sekhar Nori , , , Murali Karicheri , Ivan Vecera , Rob Herring , , Grygorii Strashko Subject: [PATCH v6 net-next 05/13] net: ethernet: ti: cpsw: move set of common functions in cpsw_priv Date: Sat, 9 Nov 2019 17:15:17 +0200 Message-ID: <20191109151525.18651-6-grygorii.strashko@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191109151525.18651-1-grygorii.strashko@ti.com> References: <20191109151525.18651-1-grygorii.strashko@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org As a preparatory patch to add support for a switchdev based cpsw driver, move common functions to cpsw-priv.c so that they can be used across both drivers. Signed-off-by: Ilias Apalodimas Signed-off-by: Murali Karicheri Signed-off-by: Grygorii Strashko --- drivers/net/ethernet/ti/cpsw.c | 1302 +-------------------------- drivers/net/ethernet/ti/cpsw_priv.c | 1235 +++++++++++++++++++++++++ drivers/net/ethernet/ti/cpsw_priv.h | 52 ++ 3 files changed, 1309 insertions(+), 1280 deletions(-) -- 2.17.1 diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 225e5351752a..6ae4a72e6f43 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -34,7 +34,6 @@ #include #include #include -#include #include #include @@ -64,10 +63,6 @@ static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT; module_param(descs_pool_size, int, 0444); MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool"); -/* The buf includes headroom compatible with both skb and xdpf */ -#define CPSW_HEADROOM_NA (max(XDP_PACKET_HEADROOM, NET_SKB_PAD) + NET_IP_ALIGN) -#define CPSW_HEADROOM ALIGN(CPSW_HEADROOM_NA, sizeof(long)) - #define for_each_slave(priv, func, arg...) \ do { \ struct cpsw_slave *slave; \ @@ -82,11 +77,6 @@ MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool"); (func)(slave++, ##arg); \ } while (0) -#define CPSW_XMETA_OFFSET ALIGN(sizeof(struct xdp_frame), sizeof(long)) - -#define CPSW_XDP_CONSUMED 1 -#define CPSW_XDP_PASS 0 - static int cpsw_slave_index_priv(struct cpsw_common *cpsw, struct cpsw_priv *priv) { @@ -343,217 +333,6 @@ static void cpsw_ndo_set_rx_mode(struct net_device *ndev) cpsw_del_mc_addr); } -void cpsw_intr_enable(struct cpsw_common *cpsw) -{ - writel_relaxed(0xFF, &cpsw->wr_regs->tx_en); - writel_relaxed(0xFF, &cpsw->wr_regs->rx_en); - - cpdma_ctlr_int_ctrl(cpsw->dma, true); - return; -} - -void cpsw_intr_disable(struct cpsw_common *cpsw) -{ - writel_relaxed(0, &cpsw->wr_regs->tx_en); - writel_relaxed(0, &cpsw->wr_regs->rx_en); - - cpdma_ctlr_int_ctrl(cpsw->dma, false); - return; -} - -static int cpsw_is_xdpf_handle(void *handle) -{ - return (unsigned long)handle & BIT(0); -} - -static void *cpsw_xdpf_to_handle(struct xdp_frame *xdpf) -{ - return (void *)((unsigned long)xdpf | BIT(0)); -} - -static struct xdp_frame *cpsw_handle_to_xdpf(void *handle) -{ - return (struct xdp_frame *)((unsigned long)handle & ~BIT(0)); -} - -struct __aligned(sizeof(long)) cpsw_meta_xdp { - struct net_device *ndev; - int ch; -}; - -void cpsw_tx_handler(void *token, int len, int status) -{ - struct cpsw_meta_xdp *xmeta; - struct xdp_frame *xdpf; - struct net_device *ndev; - struct netdev_queue *txq; - struct sk_buff *skb; - int ch; - - if (cpsw_is_xdpf_handle(token)) { - xdpf = cpsw_handle_to_xdpf(token); - xmeta = (void *)xdpf + CPSW_XMETA_OFFSET; - ndev = xmeta->ndev; - ch = xmeta->ch; - xdp_return_frame(xdpf); - } else { - skb = token; - ndev = skb->dev; - ch = skb_get_queue_mapping(skb); - cpts_tx_timestamp(ndev_to_cpsw(ndev)->cpts, skb); - dev_kfree_skb_any(skb); - } - - /* Check whether the queue is stopped due to stalled tx dma, if the - * queue is stopped then start the queue as we have free desc for tx - */ - txq = netdev_get_tx_queue(ndev, ch); - if (unlikely(netif_tx_queue_stopped(txq))) - netif_tx_wake_queue(txq); - - ndev->stats.tx_packets++; - ndev->stats.tx_bytes += len; -} - -static void cpsw_rx_vlan_encap(struct sk_buff *skb) -{ - struct cpsw_priv *priv = netdev_priv(skb->dev); - struct cpsw_common *cpsw = priv->cpsw; - u32 rx_vlan_encap_hdr = *((u32 *)skb->data); - u16 vtag, vid, prio, pkt_type; - - /* Remove VLAN header encapsulation word */ - skb_pull(skb, CPSW_RX_VLAN_ENCAP_HDR_SIZE); - - pkt_type = (rx_vlan_encap_hdr >> - CPSW_RX_VLAN_ENCAP_HDR_PKT_TYPE_SHIFT) & - CPSW_RX_VLAN_ENCAP_HDR_PKT_TYPE_MSK; - /* Ignore unknown & Priority-tagged packets*/ - if (pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_RESERV || - pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_PRIO_TAG) - return; - - vid = (rx_vlan_encap_hdr >> - CPSW_RX_VLAN_ENCAP_HDR_VID_SHIFT) & - VLAN_VID_MASK; - /* Ignore vid 0 and pass packet as is */ - if (!vid) - return; - - /* Untag P0 packets if set for vlan */ - if (!cpsw_ale_get_vlan_p0_untag(cpsw->ale, vid)) { - prio = (rx_vlan_encap_hdr >> - CPSW_RX_VLAN_ENCAP_HDR_PRIO_SHIFT) & - CPSW_RX_VLAN_ENCAP_HDR_PRIO_MSK; - - vtag = (prio << VLAN_PRIO_SHIFT) | vid; - __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vtag); - } - - /* strip vlan tag for VLAN-tagged packet */ - if (pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_VLAN_TAG) { - memmove(skb->data + VLAN_HLEN, skb->data, 2 * ETH_ALEN); - skb_pull(skb, VLAN_HLEN); - } -} - -static int cpsw_xdp_tx_frame(struct cpsw_priv *priv, struct xdp_frame *xdpf, - struct page *page) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_meta_xdp *xmeta; - struct cpdma_chan *txch; - dma_addr_t dma; - int ret, port; - - xmeta = (void *)xdpf + CPSW_XMETA_OFFSET; - xmeta->ndev = priv->ndev; - xmeta->ch = 0; - txch = cpsw->txv[0].ch; - - port = priv->emac_port + cpsw->data.dual_emac; - if (page) { - dma = page_pool_get_dma_addr(page); - dma += xdpf->headroom + sizeof(struct xdp_frame); - ret = cpdma_chan_submit_mapped(txch, cpsw_xdpf_to_handle(xdpf), - dma, xdpf->len, port); - } else { - if (sizeof(*xmeta) > xdpf->headroom) { - xdp_return_frame_rx_napi(xdpf); - return -EINVAL; - } - - ret = cpdma_chan_submit(txch, cpsw_xdpf_to_handle(xdpf), - xdpf->data, xdpf->len, port); - } - - if (ret) { - priv->ndev->stats.tx_dropped++; - xdp_return_frame_rx_napi(xdpf); - } - - return ret; -} - -static int cpsw_run_xdp(struct cpsw_priv *priv, int ch, struct xdp_buff *xdp, - struct page *page) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct net_device *ndev = priv->ndev; - int ret = CPSW_XDP_CONSUMED; - struct xdp_frame *xdpf; - struct bpf_prog *prog; - u32 act; - - rcu_read_lock(); - - prog = READ_ONCE(priv->xdp_prog); - if (!prog) { - ret = CPSW_XDP_PASS; - goto out; - } - - act = bpf_prog_run_xdp(prog, xdp); - switch (act) { - case XDP_PASS: - ret = CPSW_XDP_PASS; - break; - case XDP_TX: - xdpf = convert_to_xdp_frame(xdp); - if (unlikely(!xdpf)) - goto drop; - - cpsw_xdp_tx_frame(priv, xdpf, page); - break; - case XDP_REDIRECT: - if (xdp_do_redirect(ndev, xdp, prog)) - goto drop; - - /* Have to flush here, per packet, instead of doing it in bulk - * at the end of the napi handler. The RX devices on this - * particular hardware is sharing a common queue, so the - * incoming device might change per packet. - */ - xdp_do_flush_map(); - break; - default: - bpf_warn_invalid_xdp_action(act); - /* fall through */ - case XDP_ABORTED: - trace_xdp_exception(ndev, prog, act); - /* fall through -- handle aborts by dropping packet */ - case XDP_DROP: - goto drop; - } -out: - rcu_read_unlock(); - return ret; -drop: - rcu_read_unlock(); - page_pool_recycle_direct(cpsw->page_pool[ch], page); - return ret; -} - static unsigned int cpsw_rxbuf_total_len(unsigned int len) { len += CPSW_HEADROOM; @@ -562,123 +341,6 @@ static unsigned int cpsw_rxbuf_total_len(unsigned int len) return SKB_DATA_ALIGN(len); } -static struct page_pool *cpsw_create_page_pool(struct cpsw_common *cpsw, - int size) -{ - struct page_pool_params pp_params; - struct page_pool *pool; - - pp_params.order = 0; - pp_params.flags = PP_FLAG_DMA_MAP; - pp_params.pool_size = size; - pp_params.nid = NUMA_NO_NODE; - pp_params.dma_dir = DMA_BIDIRECTIONAL; - pp_params.dev = cpsw->dev; - - pool = page_pool_create(&pp_params); - if (IS_ERR(pool)) - dev_err(cpsw->dev, "cannot create rx page pool\n"); - - return pool; -} - -static int cpsw_ndev_create_xdp_rxq(struct cpsw_priv *priv, int ch) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct xdp_rxq_info *rxq; - struct page_pool *pool; - int ret; - - pool = cpsw->page_pool[ch]; - rxq = &priv->xdp_rxq[ch]; - - ret = xdp_rxq_info_reg(rxq, priv->ndev, ch); - if (ret) - return ret; - - ret = xdp_rxq_info_reg_mem_model(rxq, MEM_TYPE_PAGE_POOL, pool); - if (ret) - xdp_rxq_info_unreg(rxq); - - return ret; -} - -static void cpsw_ndev_destroy_xdp_rxq(struct cpsw_priv *priv, int ch) -{ - struct xdp_rxq_info *rxq = &priv->xdp_rxq[ch]; - - if (!xdp_rxq_info_is_reg(rxq)) - return; - - xdp_rxq_info_unreg(rxq); -} - -static int cpsw_create_rx_pool(struct cpsw_common *cpsw, int ch) -{ - struct page_pool *pool; - int ret = 0, pool_size; - - pool_size = cpdma_chan_get_rx_buf_num(cpsw->rxv[ch].ch); - pool = cpsw_create_page_pool(cpsw, pool_size); - if (IS_ERR(pool)) - ret = PTR_ERR(pool); - else - cpsw->page_pool[ch] = pool; - - return ret; -} - -void cpsw_destroy_xdp_rxqs(struct cpsw_common *cpsw) -{ - struct net_device *ndev; - int i, ch; - - for (ch = 0; ch < cpsw->rx_ch_num; ch++) { - for (i = 0; i < cpsw->data.slaves; i++) { - ndev = cpsw->slaves[i].ndev; - if (!ndev) - continue; - - cpsw_ndev_destroy_xdp_rxq(netdev_priv(ndev), ch); - } - - page_pool_destroy(cpsw->page_pool[ch]); - cpsw->page_pool[ch] = NULL; - } -} - -int cpsw_create_xdp_rxqs(struct cpsw_common *cpsw) -{ - struct net_device *ndev; - int i, ch, ret; - - for (ch = 0; ch < cpsw->rx_ch_num; ch++) { - ret = cpsw_create_rx_pool(cpsw, ch); - if (ret) - goto err_cleanup; - - /* using same page pool is allowed as no running rx handlers - * simultaneously for both ndevs - */ - for (i = 0; i < cpsw->data.slaves; i++) { - ndev = cpsw->slaves[i].ndev; - if (!ndev) - continue; - - ret = cpsw_ndev_create_xdp_rxq(netdev_priv(ndev), ch); - if (ret) - goto err_cleanup; - } - } - - return 0; - -err_cleanup: - cpsw_destroy_xdp_rxqs(cpsw); - - return ret; -} - static void cpsw_rx_handler(void *token, int len, int status) { struct page *new_page, *page = token; @@ -745,7 +407,8 @@ static void cpsw_rx_handler(void *token, int len, int status) xdp.data_hard_start = pa; xdp.rxq = &priv->xdp_rxq[ch]; - ret = cpsw_run_xdp(priv, ch, &xdp, page); + port = priv->emac_port + cpsw->data.dual_emac; + ret = cpsw_run_xdp(priv, ch, &xdp, page, port); if (ret != CPSW_XDP_PASS) goto requeue; @@ -795,274 +458,6 @@ static void cpsw_rx_handler(void *token, int len, int status) } } -void cpsw_split_res(struct cpsw_common *cpsw) -{ - u32 consumed_rate = 0, bigest_rate = 0; - struct cpsw_vector *txv = cpsw->txv; - int i, ch_weight, rlim_ch_num = 0; - int budget, bigest_rate_ch = 0; - u32 ch_rate, max_rate; - int ch_budget = 0; - - for (i = 0; i < cpsw->tx_ch_num; i++) { - ch_rate = cpdma_chan_get_rate(txv[i].ch); - if (!ch_rate) - continue; - - rlim_ch_num++; - consumed_rate += ch_rate; - } - - if (cpsw->tx_ch_num == rlim_ch_num) { - max_rate = consumed_rate; - } else if (!rlim_ch_num) { - ch_budget = CPSW_POLL_WEIGHT / cpsw->tx_ch_num; - bigest_rate = 0; - max_rate = consumed_rate; - } else { - max_rate = cpsw->speed * 1000; - - /* if max_rate is less then expected due to reduced link speed, - * split proportionally according next potential max speed - */ - if (max_rate < consumed_rate) - max_rate *= 10; - - if (max_rate < consumed_rate) - max_rate *= 10; - - ch_budget = (consumed_rate * CPSW_POLL_WEIGHT) / max_rate; - ch_budget = (CPSW_POLL_WEIGHT - ch_budget) / - (cpsw->tx_ch_num - rlim_ch_num); - bigest_rate = (max_rate - consumed_rate) / - (cpsw->tx_ch_num - rlim_ch_num); - } - - /* split tx weight/budget */ - budget = CPSW_POLL_WEIGHT; - for (i = 0; i < cpsw->tx_ch_num; i++) { - ch_rate = cpdma_chan_get_rate(txv[i].ch); - if (ch_rate) { - txv[i].budget = (ch_rate * CPSW_POLL_WEIGHT) / max_rate; - if (!txv[i].budget) - txv[i].budget++; - if (ch_rate > bigest_rate) { - bigest_rate_ch = i; - bigest_rate = ch_rate; - } - - ch_weight = (ch_rate * 100) / max_rate; - if (!ch_weight) - ch_weight++; - cpdma_chan_set_weight(cpsw->txv[i].ch, ch_weight); - } else { - txv[i].budget = ch_budget; - if (!bigest_rate_ch) - bigest_rate_ch = i; - cpdma_chan_set_weight(cpsw->txv[i].ch, 0); - } - - budget -= txv[i].budget; - } - - if (budget) - txv[bigest_rate_ch].budget += budget; - - /* split rx budget */ - budget = CPSW_POLL_WEIGHT; - ch_budget = budget / cpsw->rx_ch_num; - for (i = 0; i < cpsw->rx_ch_num; i++) { - cpsw->rxv[i].budget = ch_budget; - budget -= ch_budget; - } - - if (budget) - cpsw->rxv[0].budget += budget; -} - -static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id) -{ - struct cpsw_common *cpsw = dev_id; - - writel(0, &cpsw->wr_regs->tx_en); - cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_TX); - - if (cpsw->quirk_irq) { - disable_irq_nosync(cpsw->irqs_table[1]); - cpsw->tx_irq_disabled = true; - } - - napi_schedule(&cpsw->napi_tx); - return IRQ_HANDLED; -} - -static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id) -{ - struct cpsw_common *cpsw = dev_id; - - cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_RX); - writel(0, &cpsw->wr_regs->rx_en); - - if (cpsw->quirk_irq) { - disable_irq_nosync(cpsw->irqs_table[0]); - cpsw->rx_irq_disabled = true; - } - - napi_schedule(&cpsw->napi_rx); - return IRQ_HANDLED; -} - -static int cpsw_tx_mq_poll(struct napi_struct *napi_tx, int budget) -{ - u32 ch_map; - int num_tx, cur_budget, ch; - struct cpsw_common *cpsw = napi_to_cpsw(napi_tx); - struct cpsw_vector *txv; - - /* process every unprocessed channel */ - ch_map = cpdma_ctrl_txchs_state(cpsw->dma); - for (ch = 0, num_tx = 0; ch_map & 0xff; ch_map <<= 1, ch++) { - if (!(ch_map & 0x80)) - continue; - - txv = &cpsw->txv[ch]; - if (unlikely(txv->budget > budget - num_tx)) - cur_budget = budget - num_tx; - else - cur_budget = txv->budget; - - num_tx += cpdma_chan_process(txv->ch, cur_budget); - if (num_tx >= budget) - break; - } - - if (num_tx < budget) { - napi_complete(napi_tx); - writel(0xff, &cpsw->wr_regs->tx_en); - } - - return num_tx; -} - -static int cpsw_tx_poll(struct napi_struct *napi_tx, int budget) -{ - struct cpsw_common *cpsw = napi_to_cpsw(napi_tx); - int num_tx; - - num_tx = cpdma_chan_process(cpsw->txv[0].ch, budget); - if (num_tx < budget) { - napi_complete(napi_tx); - writel(0xff, &cpsw->wr_regs->tx_en); - if (cpsw->tx_irq_disabled) { - cpsw->tx_irq_disabled = false; - enable_irq(cpsw->irqs_table[1]); - } - } - - return num_tx; -} - -static int cpsw_rx_mq_poll(struct napi_struct *napi_rx, int budget) -{ - u32 ch_map; - int num_rx, cur_budget, ch; - struct cpsw_common *cpsw = napi_to_cpsw(napi_rx); - struct cpsw_vector *rxv; - - /* process every unprocessed channel */ - ch_map = cpdma_ctrl_rxchs_state(cpsw->dma); - for (ch = 0, num_rx = 0; ch_map; ch_map >>= 1, ch++) { - if (!(ch_map & 0x01)) - continue; - - rxv = &cpsw->rxv[ch]; - if (unlikely(rxv->budget > budget - num_rx)) - cur_budget = budget - num_rx; - else - cur_budget = rxv->budget; - - num_rx += cpdma_chan_process(rxv->ch, cur_budget); - if (num_rx >= budget) - break; - } - - if (num_rx < budget) { - napi_complete_done(napi_rx, num_rx); - writel(0xff, &cpsw->wr_regs->rx_en); - } - - return num_rx; -} - -static int cpsw_rx_poll(struct napi_struct *napi_rx, int budget) -{ - struct cpsw_common *cpsw = napi_to_cpsw(napi_rx); - int num_rx; - - num_rx = cpdma_chan_process(cpsw->rxv[0].ch, budget); - if (num_rx < budget) { - napi_complete_done(napi_rx, num_rx); - writel(0xff, &cpsw->wr_regs->rx_en); - if (cpsw->rx_irq_disabled) { - cpsw->rx_irq_disabled = false; - enable_irq(cpsw->irqs_table[0]); - } - } - - return num_rx; -} - -static inline void soft_reset(const char *module, void __iomem *reg) -{ - unsigned long timeout = jiffies + HZ; - - writel_relaxed(1, reg); - do { - cpu_relax(); - } while ((readl_relaxed(reg) & 1) && time_after(timeout, jiffies)); - - WARN(readl_relaxed(reg) & 1, "failed to soft-reset %s\n", module); -} - -static void cpsw_set_slave_mac(struct cpsw_slave *slave, - struct cpsw_priv *priv) -{ - slave_write(slave, mac_hi(priv->mac_addr), SA_HI); - slave_write(slave, mac_lo(priv->mac_addr), SA_LO); -} - -static bool cpsw_shp_is_off(struct cpsw_priv *priv) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_slave *slave; - u32 shift, mask, val; - - val = readl_relaxed(&cpsw->regs->ptype); - - slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; - shift = CPSW_FIFO_SHAPE_EN_SHIFT + 3 * slave->slave_num; - mask = 7 << shift; - val = val & mask; - - return !val; -} - -static void cpsw_fifo_shp_on(struct cpsw_priv *priv, int fifo, int on) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_slave *slave; - u32 shift, mask, val; - - val = readl_relaxed(&cpsw->regs->ptype); - - slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; - shift = CPSW_FIFO_SHAPE_EN_SHIFT + 3 * slave->slave_num; - mask = (1 << --fifo) << shift; - val = on ? val | mask : val & ~mask; - - writel_relaxed(val, &cpsw->regs->ptype); -} - static void _cpsw_adjust_link(struct cpsw_slave *slave, struct cpsw_priv *priv, bool *link) { @@ -1128,63 +523,25 @@ static void _cpsw_adjust_link(struct cpsw_slave *slave, slave->mac_control = mac_control; } -static int cpsw_get_common_speed(struct cpsw_common *cpsw) +static void cpsw_adjust_link(struct net_device *ndev) { - int i, speed; + struct cpsw_priv *priv = netdev_priv(ndev); + struct cpsw_common *cpsw = priv->cpsw; + bool link = false; - for (i = 0, speed = 0; i < cpsw->data.slaves; i++) - if (cpsw->slaves[i].phy && cpsw->slaves[i].phy->link) - speed += cpsw->slaves[i].phy->speed; + for_each_slave(priv, _cpsw_adjust_link, priv, &link); + + if (link) { + if (cpsw_need_resplit(cpsw)) + cpsw_split_res(cpsw); - return speed; -} - -static int cpsw_need_resplit(struct cpsw_common *cpsw) -{ - int i, rlim_ch_num; - int speed, ch_rate; - - /* re-split resources only in case speed was changed */ - speed = cpsw_get_common_speed(cpsw); - if (speed == cpsw->speed || !speed) - return 0; - - cpsw->speed = speed; - - for (i = 0, rlim_ch_num = 0; i < cpsw->tx_ch_num; i++) { - ch_rate = cpdma_chan_get_rate(cpsw->txv[i].ch); - if (!ch_rate) - break; - - rlim_ch_num++; - } - - /* cases not dependent on speed */ - if (!rlim_ch_num || rlim_ch_num == cpsw->tx_ch_num) - return 0; - - return 1; -} - -static void cpsw_adjust_link(struct net_device *ndev) -{ - struct cpsw_priv *priv = netdev_priv(ndev); - struct cpsw_common *cpsw = priv->cpsw; - bool link = false; - - for_each_slave(priv, _cpsw_adjust_link, priv, &link); - - if (link) { - if (cpsw_need_resplit(cpsw)) - cpsw_split_res(cpsw); - - netif_carrier_on(ndev); - if (netif_running(ndev)) - netif_tx_wake_all_queues(ndev); - } else { - netif_carrier_off(ndev); - netif_tx_stop_all_queues(ndev); - } + netif_carrier_on(ndev); + if (netif_running(ndev)) + netif_tx_wake_all_queues(ndev); + } else { + netif_carrier_off(ndev); + netif_tx_stop_all_queues(ndev); + } } static inline void cpsw_add_dual_emac_def_ale_entries( @@ -1358,51 +715,6 @@ static void cpsw_init_host_port(struct cpsw_priv *priv) } } -int cpsw_fill_rx_channels(struct cpsw_priv *priv) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_meta_xdp *xmeta; - struct page_pool *pool; - struct page *page; - int ch_buf_num; - int ch, i, ret; - dma_addr_t dma; - - for (ch = 0; ch < cpsw->rx_ch_num; ch++) { - pool = cpsw->page_pool[ch]; - ch_buf_num = cpdma_chan_get_rx_buf_num(cpsw->rxv[ch].ch); - for (i = 0; i < ch_buf_num; i++) { - page = page_pool_dev_alloc_pages(pool); - if (!page) { - cpsw_err(priv, ifup, "allocate rx page err\n"); - return -ENOMEM; - } - - xmeta = page_address(page) + CPSW_XMETA_OFFSET; - xmeta->ndev = priv->ndev; - xmeta->ch = ch; - - dma = page_pool_get_dma_addr(page) + CPSW_HEADROOM; - ret = cpdma_chan_idle_submit_mapped(cpsw->rxv[ch].ch, - page, dma, - cpsw->rx_packet_max, - 0); - if (ret < 0) { - cpsw_err(priv, ifup, - "cannot submit page to channel %d rx, error %d\n", - ch, ret); - page_pool_recycle_direct(pool, page); - return ret; - } - } - - cpsw_info(priv, ifup, "ch %d rx, submitted %d descriptors\n", - ch, ch_buf_num); - } - - return 0; -} - static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw) { u32 slave_port; @@ -1420,221 +732,6 @@ static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw) cpsw_sl_ctl_reset(slave->mac_sl); } -static int cpsw_tc_to_fifo(int tc, int num_tc) -{ - if (tc == num_tc - 1) - return 0; - - return CPSW_FIFO_SHAPERS_NUM - tc; -} - -static int cpsw_set_fifo_bw(struct cpsw_priv *priv, int fifo, int bw) -{ - struct cpsw_common *cpsw = priv->cpsw; - u32 val = 0, send_pct, shift; - struct cpsw_slave *slave; - int pct = 0, i; - - if (bw > priv->shp_cfg_speed * 1000) - goto err; - - /* shaping has to stay enabled for highest fifos linearly - * and fifo bw no more then interface can allow - */ - slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; - send_pct = slave_read(slave, SEND_PERCENT); - for (i = CPSW_FIFO_SHAPERS_NUM; i > 0; i--) { - if (!bw) { - if (i >= fifo || !priv->fifo_bw[i]) - continue; - - dev_warn(priv->dev, "Prev FIFO%d is shaped", i); - continue; - } - - if (!priv->fifo_bw[i] && i > fifo) { - dev_err(priv->dev, "Upper FIFO%d is not shaped", i); - return -EINVAL; - } - - shift = (i - 1) * 8; - if (i == fifo) { - send_pct &= ~(CPSW_PCT_MASK << shift); - val = DIV_ROUND_UP(bw, priv->shp_cfg_speed * 10); - if (!val) - val = 1; - - send_pct |= val << shift; - pct += val; - continue; - } - - if (priv->fifo_bw[i]) - pct += (send_pct >> shift) & CPSW_PCT_MASK; - } - - if (pct >= 100) - goto err; - - slave_write(slave, send_pct, SEND_PERCENT); - priv->fifo_bw[fifo] = bw; - - dev_warn(priv->dev, "set FIFO%d bw = %d\n", fifo, - DIV_ROUND_CLOSEST(val * priv->shp_cfg_speed, 100)); - - return 0; -err: - dev_err(priv->dev, "Bandwidth doesn't fit in tc configuration"); - return -EINVAL; -} - -static int cpsw_set_fifo_rlimit(struct cpsw_priv *priv, int fifo, int bw) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_slave *slave; - u32 tx_in_ctl_rg, val; - int ret; - - ret = cpsw_set_fifo_bw(priv, fifo, bw); - if (ret) - return ret; - - slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; - tx_in_ctl_rg = cpsw->version == CPSW_VERSION_1 ? - CPSW1_TX_IN_CTL : CPSW2_TX_IN_CTL; - - if (!bw) - cpsw_fifo_shp_on(priv, fifo, bw); - - val = slave_read(slave, tx_in_ctl_rg); - if (cpsw_shp_is_off(priv)) { - /* disable FIFOs rate limited queues */ - val &= ~(0xf << CPSW_FIFO_RATE_EN_SHIFT); - - /* set type of FIFO queues to normal priority mode */ - val &= ~(3 << CPSW_FIFO_QUEUE_TYPE_SHIFT); - - /* set type of FIFO queues to be rate limited */ - if (bw) - val |= 2 << CPSW_FIFO_QUEUE_TYPE_SHIFT; - else - priv->shp_cfg_speed = 0; - } - - /* toggle a FIFO rate limited queue */ - if (bw) - val |= BIT(fifo + CPSW_FIFO_RATE_EN_SHIFT); - else - val &= ~BIT(fifo + CPSW_FIFO_RATE_EN_SHIFT); - slave_write(slave, val, tx_in_ctl_rg); - - /* FIFO transmit shape enable */ - cpsw_fifo_shp_on(priv, fifo, bw); - return 0; -} - -/* Defaults: - * class A - prio 3 - * class B - prio 2 - * shaping for class A should be set first - */ -static int cpsw_set_cbs(struct net_device *ndev, - struct tc_cbs_qopt_offload *qopt) -{ - struct cpsw_priv *priv = netdev_priv(ndev); - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_slave *slave; - int prev_speed = 0; - int tc, ret, fifo; - u32 bw = 0; - - tc = netdev_txq_to_tc(priv->ndev, qopt->queue); - - /* enable channels in backward order, as highest FIFOs must be rate - * limited first and for compliance with CPDMA rate limited channels - * that also used in bacward order. FIFO0 cannot be rate limited. - */ - fifo = cpsw_tc_to_fifo(tc, ndev->num_tc); - if (!fifo) { - dev_err(priv->dev, "Last tc%d can't be rate limited", tc); - return -EINVAL; - } - - /* do nothing, it's disabled anyway */ - if (!qopt->enable && !priv->fifo_bw[fifo]) - return 0; - - /* shapers can be set if link speed is known */ - slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; - if (slave->phy && slave->phy->link) { - if (priv->shp_cfg_speed && - priv->shp_cfg_speed != slave->phy->speed) - prev_speed = priv->shp_cfg_speed; - - priv->shp_cfg_speed = slave->phy->speed; - } - - if (!priv->shp_cfg_speed) { - dev_err(priv->dev, "Link speed is not known"); - return -1; - } - - ret = pm_runtime_get_sync(cpsw->dev); - if (ret < 0) { - pm_runtime_put_noidle(cpsw->dev); - return ret; - } - - bw = qopt->enable ? qopt->idleslope : 0; - ret = cpsw_set_fifo_rlimit(priv, fifo, bw); - if (ret) { - priv->shp_cfg_speed = prev_speed; - prev_speed = 0; - } - - if (bw && prev_speed) - dev_warn(priv->dev, - "Speed was changed, CBS shaper speeds are changed!"); - - pm_runtime_put_sync(cpsw->dev); - return ret; -} - -static void cpsw_cbs_resume(struct cpsw_slave *slave, struct cpsw_priv *priv) -{ - int fifo, bw; - - for (fifo = CPSW_FIFO_SHAPERS_NUM; fifo > 0; fifo--) { - bw = priv->fifo_bw[fifo]; - if (!bw) - continue; - - cpsw_set_fifo_rlimit(priv, fifo, bw); - } -} - -static void cpsw_mqprio_resume(struct cpsw_slave *slave, struct cpsw_priv *priv) -{ - struct cpsw_common *cpsw = priv->cpsw; - u32 tx_prio_map = 0; - int i, tc, fifo; - u32 tx_prio_rg; - - if (!priv->mqprio_hw) - return; - - for (i = 0; i < 8; i++) { - tc = netdev_get_prio_tc_map(priv->ndev, i); - fifo = CPSW_FIFO_SHAPERS_NUM - tc; - tx_prio_map |= fifo << (4 * i); - } - - tx_prio_rg = cpsw->version == CPSW_VERSION_1 ? - CPSW1_TX_PRI_MAP : CPSW2_TX_PRI_MAP; - - slave_write(slave, tx_prio_map, tx_prio_rg); -} - static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg) { struct cpsw_priv *priv = arg; @@ -1863,207 +960,6 @@ static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb, return NETDEV_TX_BUSY; } -#if IS_ENABLED(CONFIG_TI_CPTS) - -static void cpsw_hwtstamp_v1(struct cpsw_priv *priv) -{ - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_slave *slave = &cpsw->slaves[cpsw->data.active_slave]; - u32 ts_en, seq_id; - - if (!priv->tx_ts_enabled && !priv->rx_ts_enabled) { - slave_write(slave, 0, CPSW1_TS_CTL); - return; - } - - seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588; - ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS; - - if (priv->tx_ts_enabled) - ts_en |= CPSW_V1_TS_TX_EN; - - if (priv->rx_ts_enabled) - ts_en |= CPSW_V1_TS_RX_EN; - - slave_write(slave, ts_en, CPSW1_TS_CTL); - slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE); -} - -static void cpsw_hwtstamp_v2(struct cpsw_priv *priv) -{ - struct cpsw_slave *slave; - struct cpsw_common *cpsw = priv->cpsw; - u32 ctrl, mtype; - - slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; - - ctrl = slave_read(slave, CPSW2_CONTROL); - switch (cpsw->version) { - case CPSW_VERSION_2: - ctrl &= ~CTRL_V2_ALL_TS_MASK; - - if (priv->tx_ts_enabled) - ctrl |= CTRL_V2_TX_TS_BITS; - - if (priv->rx_ts_enabled) - ctrl |= CTRL_V2_RX_TS_BITS; - break; - case CPSW_VERSION_3: - default: - ctrl &= ~CTRL_V3_ALL_TS_MASK; - - if (priv->tx_ts_enabled) - ctrl |= CTRL_V3_TX_TS_BITS; - - if (priv->rx_ts_enabled) - ctrl |= CTRL_V3_RX_TS_BITS; - break; - } - - mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS; - - slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE); - slave_write(slave, ctrl, CPSW2_CONTROL); - writel_relaxed(ETH_P_1588, &cpsw->regs->ts_ltype); - writel_relaxed(ETH_P_8021Q, &cpsw->regs->vlan_ltype); -} - -static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) -{ - struct cpsw_priv *priv = netdev_priv(dev); - struct hwtstamp_config cfg; - struct cpsw_common *cpsw = priv->cpsw; - - if (cpsw->version != CPSW_VERSION_1 && - cpsw->version != CPSW_VERSION_2 && - cpsw->version != CPSW_VERSION_3) - return -EOPNOTSUPP; - - if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) - return -EFAULT; - - /* reserved for future extensions */ - if (cfg.flags) - return -EINVAL; - - if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON) - return -ERANGE; - - switch (cfg.rx_filter) { - case HWTSTAMP_FILTER_NONE: - priv->rx_ts_enabled = 0; - break; - case HWTSTAMP_FILTER_ALL: - case HWTSTAMP_FILTER_NTP_ALL: - return -ERANGE; - case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: - case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: - priv->rx_ts_enabled = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; - cfg.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; - break; - case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: - priv->rx_ts_enabled = HWTSTAMP_FILTER_PTP_V2_EVENT; - cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; - break; - default: - return -ERANGE; - } - - priv->tx_ts_enabled = cfg.tx_type == HWTSTAMP_TX_ON; - - switch (cpsw->version) { - case CPSW_VERSION_1: - cpsw_hwtstamp_v1(priv); - break; - case CPSW_VERSION_2: - case CPSW_VERSION_3: - cpsw_hwtstamp_v2(priv); - break; - default: - WARN_ON(1); - } - - return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; -} - -static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) -{ - struct cpsw_common *cpsw = ndev_to_cpsw(dev); - struct cpsw_priv *priv = netdev_priv(dev); - struct hwtstamp_config cfg; - - if (cpsw->version != CPSW_VERSION_1 && - cpsw->version != CPSW_VERSION_2 && - cpsw->version != CPSW_VERSION_3) - return -EOPNOTSUPP; - - cfg.flags = 0; - cfg.tx_type = priv->tx_ts_enabled ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; - cfg.rx_filter = priv->rx_ts_enabled; - - return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; -} -#else -static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) -{ - return -EOPNOTSUPP; -} - -static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) -{ - return -EOPNOTSUPP; -} -#endif /*CONFIG_TI_CPTS*/ - -static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd) -{ - struct cpsw_priv *priv = netdev_priv(dev); - struct cpsw_common *cpsw = priv->cpsw; - int slave_no = cpsw_slave_index(cpsw, priv); - - if (!netif_running(dev)) - return -EINVAL; - - switch (cmd) { - case SIOCSHWTSTAMP: - return cpsw_hwtstamp_set(dev, req); - case SIOCGHWTSTAMP: - return cpsw_hwtstamp_get(dev, req); - } - - if (!cpsw->slaves[slave_no].phy) - return -EOPNOTSUPP; - return phy_mii_ioctl(cpsw->slaves[slave_no].phy, req, cmd); -} - -static void cpsw_ndo_tx_timeout(struct net_device *ndev) -{ - struct cpsw_priv *priv = netdev_priv(ndev); - struct cpsw_common *cpsw = priv->cpsw; - int ch; - - cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n"); - ndev->stats.tx_errors++; - cpsw_intr_disable(cpsw); - for (ch = 0; ch < cpsw->tx_ch_num; ch++) { - cpdma_chan_stop(cpsw->txv[ch].ch); - cpdma_chan_start(cpsw->txv[ch].ch); - } - - cpsw_intr_enable(cpsw); - netif_trans_update(ndev); - netif_tx_wake_all_queues(ndev); -} - static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p) { struct cpsw_priv *priv = netdev_priv(ndev); @@ -2225,168 +1121,13 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev, return ret; } -static int cpsw_ndo_set_tx_maxrate(struct net_device *ndev, int queue, u32 rate) -{ - struct cpsw_priv *priv = netdev_priv(ndev); - struct cpsw_common *cpsw = priv->cpsw; - struct cpsw_slave *slave; - u32 min_rate; - u32 ch_rate; - int i, ret; - - ch_rate = netdev_get_tx_queue(ndev, queue)->tx_maxrate; - if (ch_rate == rate) - return 0; - - ch_rate = rate * 1000; - min_rate = cpdma_chan_get_min_rate(cpsw->dma); - if ((ch_rate < min_rate && ch_rate)) { - dev_err(priv->dev, "The channel rate cannot be less than %dMbps", - min_rate); - return -EINVAL; - } - - if (rate > cpsw->speed) { - dev_err(priv->dev, "The channel rate cannot be more than 2Gbps"); - return -EINVAL; - } - - ret = pm_runtime_get_sync(cpsw->dev); - if (ret < 0) { - pm_runtime_put_noidle(cpsw->dev); - return ret; - } - - ret = cpdma_chan_set_rate(cpsw->txv[queue].ch, ch_rate); - pm_runtime_put(cpsw->dev); - - if (ret) - return ret; - - /* update rates for slaves tx queues */ - for (i = 0; i < cpsw->data.slaves; i++) { - slave = &cpsw->slaves[i]; - if (!slave->ndev) - continue; - - netdev_get_tx_queue(slave->ndev, queue)->tx_maxrate = rate; - } - - cpsw_split_res(cpsw); - return ret; -} - -static int cpsw_set_mqprio(struct net_device *ndev, void *type_data) -{ - struct tc_mqprio_qopt_offload *mqprio = type_data; - struct cpsw_priv *priv = netdev_priv(ndev); - struct cpsw_common *cpsw = priv->cpsw; - int fifo, num_tc, count, offset; - struct cpsw_slave *slave; - u32 tx_prio_map = 0; - int i, tc, ret; - - num_tc = mqprio->qopt.num_tc; - if (num_tc > CPSW_TC_NUM) - return -EINVAL; - - if (mqprio->mode != TC_MQPRIO_MODE_DCB) - return -EINVAL; - - ret = pm_runtime_get_sync(cpsw->dev); - if (ret < 0) { - pm_runtime_put_noidle(cpsw->dev); - return ret; - } - - if (num_tc) { - for (i = 0; i < 8; i++) { - tc = mqprio->qopt.prio_tc_map[i]; - fifo = cpsw_tc_to_fifo(tc, num_tc); - tx_prio_map |= fifo << (4 * i); - } - - netdev_set_num_tc(ndev, num_tc); - for (i = 0; i < num_tc; i++) { - count = mqprio->qopt.count[i]; - offset = mqprio->qopt.offset[i]; - netdev_set_tc_queue(ndev, i, count, offset); - } - } - - if (!mqprio->qopt.hw) { - /* restore default configuration */ - netdev_reset_tc(ndev); - tx_prio_map = TX_PRIORITY_MAPPING; - } - - priv->mqprio_hw = mqprio->qopt.hw; - - offset = cpsw->version == CPSW_VERSION_1 ? - CPSW1_TX_PRI_MAP : CPSW2_TX_PRI_MAP; - - slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; - slave_write(slave, tx_prio_map, offset); - - pm_runtime_put_sync(cpsw->dev); - - return 0; -} - -static int cpsw_ndo_setup_tc(struct net_device *ndev, enum tc_setup_type type, - void *type_data) -{ - switch (type) { - case TC_SETUP_QDISC_CBS: - return cpsw_set_cbs(ndev, type_data); - - case TC_SETUP_QDISC_MQPRIO: - return cpsw_set_mqprio(ndev, type_data); - - default: - return -EOPNOTSUPP; - } -} - -static int cpsw_xdp_prog_setup(struct cpsw_priv *priv, struct netdev_bpf *bpf) -{ - struct bpf_prog *prog = bpf->prog; - - if (!priv->xdpi.prog && !prog) - return 0; - - if (!xdp_attachment_flags_ok(&priv->xdpi, bpf)) - return -EBUSY; - - WRITE_ONCE(priv->xdp_prog, prog); - - xdp_attachment_setup(&priv->xdpi, bpf); - - return 0; -} - -static int cpsw_ndo_bpf(struct net_device *ndev, struct netdev_bpf *bpf) -{ - struct cpsw_priv *priv = netdev_priv(ndev); - - switch (bpf->command) { - case XDP_SETUP_PROG: - return cpsw_xdp_prog_setup(priv, bpf); - - case XDP_QUERY_PROG: - return xdp_attachment_query(&priv->xdpi, bpf); - - default: - return -EINVAL; - } -} - static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n, struct xdp_frame **frames, u32 flags) { struct cpsw_priv *priv = netdev_priv(ndev); + struct cpsw_common *cpsw = priv->cpsw; struct xdp_frame *xdpf; - int i, drops = 0; + int i, drops = 0, port; if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) return -EINVAL; @@ -2399,7 +1140,8 @@ static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n, continue; } - if (cpsw_xdp_tx_frame(priv, xdpf, NULL)) + port = priv->emac_port + cpsw->data.dual_emac; + if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port)) drops++; } diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c index a1c83af64835..bbc9b413b5c3 100644 --- a/drivers/net/ethernet/ti/cpsw_priv.c +++ b/drivers/net/ethernet/ti/cpsw_priv.c @@ -5,14 +5,22 @@ * Copyright (C) 2019 Texas Instruments */ +#include +#include #include #include +#include #include #include +#include #include #include +#include #include +#include +#include +#include "cpsw.h" #include "cpts.h" #include "cpsw_ale.h" #include "cpsw_priv.h" @@ -21,6 +29,390 @@ int (*cpsw_slave_index)(struct cpsw_common *cpsw, struct cpsw_priv *priv); +void cpsw_intr_enable(struct cpsw_common *cpsw) +{ + writel_relaxed(0xFF, &cpsw->wr_regs->tx_en); + writel_relaxed(0xFF, &cpsw->wr_regs->rx_en); + + cpdma_ctlr_int_ctrl(cpsw->dma, true); +} + +void cpsw_intr_disable(struct cpsw_common *cpsw) +{ + writel_relaxed(0, &cpsw->wr_regs->tx_en); + writel_relaxed(0, &cpsw->wr_regs->rx_en); + + cpdma_ctlr_int_ctrl(cpsw->dma, false); +} + +void cpsw_tx_handler(void *token, int len, int status) +{ + struct cpsw_meta_xdp *xmeta; + struct xdp_frame *xdpf; + struct net_device *ndev; + struct netdev_queue *txq; + struct sk_buff *skb; + int ch; + + if (cpsw_is_xdpf_handle(token)) { + xdpf = cpsw_handle_to_xdpf(token); + xmeta = (void *)xdpf + CPSW_XMETA_OFFSET; + ndev = xmeta->ndev; + ch = xmeta->ch; + xdp_return_frame(xdpf); + } else { + skb = token; + ndev = skb->dev; + ch = skb_get_queue_mapping(skb); + cpts_tx_timestamp(ndev_to_cpsw(ndev)->cpts, skb); + dev_kfree_skb_any(skb); + } + + /* Check whether the queue is stopped due to stalled tx dma, if the + * queue is stopped then start the queue as we have free desc for tx + */ + txq = netdev_get_tx_queue(ndev, ch); + if (unlikely(netif_tx_queue_stopped(txq))) + netif_tx_wake_queue(txq); + + ndev->stats.tx_packets++; + ndev->stats.tx_bytes += len; +} + +irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id) +{ + struct cpsw_common *cpsw = dev_id; + + writel(0, &cpsw->wr_regs->tx_en); + cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_TX); + + if (cpsw->quirk_irq) { + disable_irq_nosync(cpsw->irqs_table[1]); + cpsw->tx_irq_disabled = true; + } + + napi_schedule(&cpsw->napi_tx); + return IRQ_HANDLED; +} + +irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id) +{ + struct cpsw_common *cpsw = dev_id; + + cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_RX); + writel(0, &cpsw->wr_regs->rx_en); + + if (cpsw->quirk_irq) { + disable_irq_nosync(cpsw->irqs_table[0]); + cpsw->rx_irq_disabled = true; + } + + napi_schedule(&cpsw->napi_rx); + return IRQ_HANDLED; +} + +int cpsw_tx_mq_poll(struct napi_struct *napi_tx, int budget) +{ + struct cpsw_common *cpsw = napi_to_cpsw(napi_tx); + int num_tx, cur_budget, ch; + u32 ch_map; + struct cpsw_vector *txv; + + /* process every unprocessed channel */ + ch_map = cpdma_ctrl_txchs_state(cpsw->dma); + for (ch = 0, num_tx = 0; ch_map & 0xff; ch_map <<= 1, ch++) { + if (!(ch_map & 0x80)) + continue; + + txv = &cpsw->txv[ch]; + if (unlikely(txv->budget > budget - num_tx)) + cur_budget = budget - num_tx; + else + cur_budget = txv->budget; + + num_tx += cpdma_chan_process(txv->ch, cur_budget); + if (num_tx >= budget) + break; + } + + if (num_tx < budget) { + napi_complete(napi_tx); + writel(0xff, &cpsw->wr_regs->tx_en); + } + + return num_tx; +} + +int cpsw_tx_poll(struct napi_struct *napi_tx, int budget) +{ + struct cpsw_common *cpsw = napi_to_cpsw(napi_tx); + int num_tx; + + num_tx = cpdma_chan_process(cpsw->txv[0].ch, budget); + if (num_tx < budget) { + napi_complete(napi_tx); + writel(0xff, &cpsw->wr_regs->tx_en); + if (cpsw->tx_irq_disabled) { + cpsw->tx_irq_disabled = false; + enable_irq(cpsw->irqs_table[1]); + } + } + + return num_tx; +} + +int cpsw_rx_mq_poll(struct napi_struct *napi_rx, int budget) +{ + struct cpsw_common *cpsw = napi_to_cpsw(napi_rx); + int num_rx, cur_budget, ch; + u32 ch_map; + struct cpsw_vector *rxv; + + /* process every unprocessed channel */ + ch_map = cpdma_ctrl_rxchs_state(cpsw->dma); + for (ch = 0, num_rx = 0; ch_map; ch_map >>= 1, ch++) { + if (!(ch_map & 0x01)) + continue; + + rxv = &cpsw->rxv[ch]; + if (unlikely(rxv->budget > budget - num_rx)) + cur_budget = budget - num_rx; + else + cur_budget = rxv->budget; + + num_rx += cpdma_chan_process(rxv->ch, cur_budget); + if (num_rx >= budget) + break; + } + + if (num_rx < budget) { + napi_complete_done(napi_rx, num_rx); + writel(0xff, &cpsw->wr_regs->rx_en); + } + + return num_rx; +} + +int cpsw_rx_poll(struct napi_struct *napi_rx, int budget) +{ + struct cpsw_common *cpsw = napi_to_cpsw(napi_rx); + int num_rx; + + num_rx = cpdma_chan_process(cpsw->rxv[0].ch, budget); + if (num_rx < budget) { + napi_complete_done(napi_rx, num_rx); + writel(0xff, &cpsw->wr_regs->rx_en); + if (cpsw->rx_irq_disabled) { + cpsw->rx_irq_disabled = false; + enable_irq(cpsw->irqs_table[0]); + } + } + + return num_rx; +} + +void cpsw_rx_vlan_encap(struct sk_buff *skb) +{ + struct cpsw_priv *priv = netdev_priv(skb->dev); + u32 rx_vlan_encap_hdr = *((u32 *)skb->data); + struct cpsw_common *cpsw = priv->cpsw; + u16 vtag, vid, prio, pkt_type; + + /* Remove VLAN header encapsulation word */ + skb_pull(skb, CPSW_RX_VLAN_ENCAP_HDR_SIZE); + + pkt_type = (rx_vlan_encap_hdr >> + CPSW_RX_VLAN_ENCAP_HDR_PKT_TYPE_SHIFT) & + CPSW_RX_VLAN_ENCAP_HDR_PKT_TYPE_MSK; + /* Ignore unknown & Priority-tagged packets*/ + if (pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_RESERV || + pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_PRIO_TAG) + return; + + vid = (rx_vlan_encap_hdr >> + CPSW_RX_VLAN_ENCAP_HDR_VID_SHIFT) & + VLAN_VID_MASK; + /* Ignore vid 0 and pass packet as is */ + if (!vid) + return; + + /* Untag P0 packets if set for vlan */ + if (!cpsw_ale_get_vlan_p0_untag(cpsw->ale, vid)) { + prio = (rx_vlan_encap_hdr >> + CPSW_RX_VLAN_ENCAP_HDR_PRIO_SHIFT) & + CPSW_RX_VLAN_ENCAP_HDR_PRIO_MSK; + + vtag = (prio << VLAN_PRIO_SHIFT) | vid; + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vtag); + } + + /* strip vlan tag for VLAN-tagged packet */ + if (pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_VLAN_TAG) { + memmove(skb->data + VLAN_HLEN, skb->data, 2 * ETH_ALEN); + skb_pull(skb, VLAN_HLEN); + } +} + +void cpsw_set_slave_mac(struct cpsw_slave *slave, struct cpsw_priv *priv) +{ + slave_write(slave, mac_hi(priv->mac_addr), SA_HI); + slave_write(slave, mac_lo(priv->mac_addr), SA_LO); +} + +void soft_reset(const char *module, void __iomem *reg) +{ + unsigned long timeout = jiffies + HZ; + + writel_relaxed(1, reg); + do { + cpu_relax(); + } while ((readl_relaxed(reg) & 1) && time_after(timeout, jiffies)); + + WARN(readl_relaxed(reg) & 1, "failed to soft-reset %s\n", module); +} + +void cpsw_ndo_tx_timeout(struct net_device *ndev) +{ + struct cpsw_priv *priv = netdev_priv(ndev); + struct cpsw_common *cpsw = priv->cpsw; + int ch; + + cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n"); + ndev->stats.tx_errors++; + cpsw_intr_disable(cpsw); + for (ch = 0; ch < cpsw->tx_ch_num; ch++) { + cpdma_chan_stop(cpsw->txv[ch].ch); + cpdma_chan_start(cpsw->txv[ch].ch); + } + + cpsw_intr_enable(cpsw); + netif_trans_update(ndev); + netif_tx_wake_all_queues(ndev); +} + +static int cpsw_get_common_speed(struct cpsw_common *cpsw) +{ + int i, speed; + + for (i = 0, speed = 0; i < cpsw->data.slaves; i++) + if (cpsw->slaves[i].phy && cpsw->slaves[i].phy->link) + speed += cpsw->slaves[i].phy->speed; + + return speed; +} + +int cpsw_need_resplit(struct cpsw_common *cpsw) +{ + int i, rlim_ch_num; + int speed, ch_rate; + + /* re-split resources only in case speed was changed */ + speed = cpsw_get_common_speed(cpsw); + if (speed == cpsw->speed || !speed) + return 0; + + cpsw->speed = speed; + + for (i = 0, rlim_ch_num = 0; i < cpsw->tx_ch_num; i++) { + ch_rate = cpdma_chan_get_rate(cpsw->txv[i].ch); + if (!ch_rate) + break; + + rlim_ch_num++; + } + + /* cases not dependent on speed */ + if (!rlim_ch_num || rlim_ch_num == cpsw->tx_ch_num) + return 0; + + return 1; +} + +void cpsw_split_res(struct cpsw_common *cpsw) +{ + u32 consumed_rate = 0, bigest_rate = 0; + struct cpsw_vector *txv = cpsw->txv; + int i, ch_weight, rlim_ch_num = 0; + int budget, bigest_rate_ch = 0; + u32 ch_rate, max_rate; + int ch_budget = 0; + + for (i = 0; i < cpsw->tx_ch_num; i++) { + ch_rate = cpdma_chan_get_rate(txv[i].ch); + if (!ch_rate) + continue; + + rlim_ch_num++; + consumed_rate += ch_rate; + } + + if (cpsw->tx_ch_num == rlim_ch_num) { + max_rate = consumed_rate; + } else if (!rlim_ch_num) { + ch_budget = CPSW_POLL_WEIGHT / cpsw->tx_ch_num; + bigest_rate = 0; + max_rate = consumed_rate; + } else { + max_rate = cpsw->speed * 1000; + + /* if max_rate is less then expected due to reduced link speed, + * split proportionally according next potential max speed + */ + if (max_rate < consumed_rate) + max_rate *= 10; + + if (max_rate < consumed_rate) + max_rate *= 10; + + ch_budget = (consumed_rate * CPSW_POLL_WEIGHT) / max_rate; + ch_budget = (CPSW_POLL_WEIGHT - ch_budget) / + (cpsw->tx_ch_num - rlim_ch_num); + bigest_rate = (max_rate - consumed_rate) / + (cpsw->tx_ch_num - rlim_ch_num); + } + + /* split tx weight/budget */ + budget = CPSW_POLL_WEIGHT; + for (i = 0; i < cpsw->tx_ch_num; i++) { + ch_rate = cpdma_chan_get_rate(txv[i].ch); + if (ch_rate) { + txv[i].budget = (ch_rate * CPSW_POLL_WEIGHT) / max_rate; + if (!txv[i].budget) + txv[i].budget++; + if (ch_rate > bigest_rate) { + bigest_rate_ch = i; + bigest_rate = ch_rate; + } + + ch_weight = (ch_rate * 100) / max_rate; + if (!ch_weight) + ch_weight++; + cpdma_chan_set_weight(cpsw->txv[i].ch, ch_weight); + } else { + txv[i].budget = ch_budget; + if (!bigest_rate_ch) + bigest_rate_ch = i; + cpdma_chan_set_weight(cpsw->txv[i].ch, 0); + } + + budget -= txv[i].budget; + } + + if (budget) + txv[bigest_rate_ch].budget += budget; + + /* split rx budget */ + budget = CPSW_POLL_WEIGHT; + ch_budget = budget / cpsw->rx_ch_num; + for (i = 0; i < cpsw->rx_ch_num; i++) { + cpsw->rxv[i].budget = ch_budget; + budget -= ch_budget; + } + + if (budget) + cpsw->rxv[0].budget += budget; +} + int cpsw_init_common(struct cpsw_common *cpsw, void __iomem *ss_regs, int ale_ageout, phys_addr_t desc_mem_phys, int descs_pool_size) @@ -132,3 +524,846 @@ int cpsw_init_common(struct cpsw_common *cpsw, void __iomem *ss_regs, return ret; } + +#if IS_ENABLED(CONFIG_TI_CPTS) + +static void cpsw_hwtstamp_v1(struct cpsw_priv *priv) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_slave *slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + u32 ts_en, seq_id; + + if (!priv->tx_ts_enabled && !priv->rx_ts_enabled) { + slave_write(slave, 0, CPSW1_TS_CTL); + return; + } + + seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588; + ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS; + + if (priv->tx_ts_enabled) + ts_en |= CPSW_V1_TS_TX_EN; + + if (priv->rx_ts_enabled) + ts_en |= CPSW_V1_TS_RX_EN; + + slave_write(slave, ts_en, CPSW1_TS_CTL); + slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE); +} + +static void cpsw_hwtstamp_v2(struct cpsw_priv *priv) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_slave *slave; + u32 ctrl, mtype; + + slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + + ctrl = slave_read(slave, CPSW2_CONTROL); + switch (cpsw->version) { + case CPSW_VERSION_2: + ctrl &= ~CTRL_V2_ALL_TS_MASK; + + if (priv->tx_ts_enabled) + ctrl |= CTRL_V2_TX_TS_BITS; + + if (priv->rx_ts_enabled) + ctrl |= CTRL_V2_RX_TS_BITS; + break; + case CPSW_VERSION_3: + default: + ctrl &= ~CTRL_V3_ALL_TS_MASK; + + if (priv->tx_ts_enabled) + ctrl |= CTRL_V3_TX_TS_BITS; + + if (priv->rx_ts_enabled) + ctrl |= CTRL_V3_RX_TS_BITS; + break; + } + + mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS; + + slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE); + slave_write(slave, ctrl, CPSW2_CONTROL); + writel_relaxed(ETH_P_1588, &cpsw->regs->ts_ltype); + writel_relaxed(ETH_P_8021Q, &cpsw->regs->vlan_ltype); +} + +static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) +{ + struct cpsw_priv *priv = netdev_priv(dev); + struct cpsw_common *cpsw = priv->cpsw; + struct hwtstamp_config cfg; + + if (cpsw->version != CPSW_VERSION_1 && + cpsw->version != CPSW_VERSION_2 && + cpsw->version != CPSW_VERSION_3) + return -EOPNOTSUPP; + + if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) + return -EFAULT; + + /* reserved for future extensions */ + if (cfg.flags) + return -EINVAL; + + if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON) + return -ERANGE; + + switch (cfg.rx_filter) { + case HWTSTAMP_FILTER_NONE: + priv->rx_ts_enabled = 0; + break; + case HWTSTAMP_FILTER_ALL: + case HWTSTAMP_FILTER_NTP_ALL: + return -ERANGE; + case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + priv->rx_ts_enabled = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; + cfg.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; + break; + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: + priv->rx_ts_enabled = HWTSTAMP_FILTER_PTP_V2_EVENT; + cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; + break; + default: + return -ERANGE; + } + + priv->tx_ts_enabled = cfg.tx_type == HWTSTAMP_TX_ON; + + switch (cpsw->version) { + case CPSW_VERSION_1: + cpsw_hwtstamp_v1(priv); + break; + case CPSW_VERSION_2: + case CPSW_VERSION_3: + cpsw_hwtstamp_v2(priv); + break; + default: + WARN_ON(1); + } + + return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; +} + +static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) +{ + struct cpsw_common *cpsw = ndev_to_cpsw(dev); + struct cpsw_priv *priv = netdev_priv(dev); + struct hwtstamp_config cfg; + + if (cpsw->version != CPSW_VERSION_1 && + cpsw->version != CPSW_VERSION_2 && + cpsw->version != CPSW_VERSION_3) + return -EOPNOTSUPP; + + cfg.flags = 0; + cfg.tx_type = priv->tx_ts_enabled ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; + cfg.rx_filter = priv->rx_ts_enabled; + + return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; +} +#else +static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) +{ + return -EOPNOTSUPP; +} + +static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) +{ + return -EOPNOTSUPP; +} +#endif /*CONFIG_TI_CPTS*/ + +int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd) +{ + struct cpsw_priv *priv = netdev_priv(dev); + struct cpsw_common *cpsw = priv->cpsw; + int slave_no = cpsw_slave_index(cpsw, priv); + + if (!netif_running(dev)) + return -EINVAL; + + switch (cmd) { + case SIOCSHWTSTAMP: + return cpsw_hwtstamp_set(dev, req); + case SIOCGHWTSTAMP: + return cpsw_hwtstamp_get(dev, req); + } + + if (!cpsw->slaves[slave_no].phy) + return -EOPNOTSUPP; + return phy_mii_ioctl(cpsw->slaves[slave_no].phy, req, cmd); +} + +int cpsw_ndo_set_tx_maxrate(struct net_device *ndev, int queue, u32 rate) +{ + struct cpsw_priv *priv = netdev_priv(ndev); + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_slave *slave; + u32 min_rate; + u32 ch_rate; + int i, ret; + + ch_rate = netdev_get_tx_queue(ndev, queue)->tx_maxrate; + if (ch_rate == rate) + return 0; + + ch_rate = rate * 1000; + min_rate = cpdma_chan_get_min_rate(cpsw->dma); + if ((ch_rate < min_rate && ch_rate)) { + dev_err(priv->dev, "The channel rate cannot be less than %dMbps", + min_rate); + return -EINVAL; + } + + if (rate > cpsw->speed) { + dev_err(priv->dev, "The channel rate cannot be more than 2Gbps"); + return -EINVAL; + } + + ret = pm_runtime_get_sync(cpsw->dev); + if (ret < 0) { + pm_runtime_put_noidle(cpsw->dev); + return ret; + } + + ret = cpdma_chan_set_rate(cpsw->txv[queue].ch, ch_rate); + pm_runtime_put(cpsw->dev); + + if (ret) + return ret; + + /* update rates for slaves tx queues */ + for (i = 0; i < cpsw->data.slaves; i++) { + slave = &cpsw->slaves[i]; + if (!slave->ndev) + continue; + + netdev_get_tx_queue(slave->ndev, queue)->tx_maxrate = rate; + } + + cpsw_split_res(cpsw); + return ret; +} + +static int cpsw_tc_to_fifo(int tc, int num_tc) +{ + if (tc == num_tc - 1) + return 0; + + return CPSW_FIFO_SHAPERS_NUM - tc; +} + +bool cpsw_shp_is_off(struct cpsw_priv *priv) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_slave *slave; + u32 shift, mask, val; + + val = readl_relaxed(&cpsw->regs->ptype); + + slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + shift = CPSW_FIFO_SHAPE_EN_SHIFT + 3 * slave->slave_num; + mask = 7 << shift; + val = val & mask; + + return !val; +} + +static void cpsw_fifo_shp_on(struct cpsw_priv *priv, int fifo, int on) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_slave *slave; + u32 shift, mask, val; + + val = readl_relaxed(&cpsw->regs->ptype); + + slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + shift = CPSW_FIFO_SHAPE_EN_SHIFT + 3 * slave->slave_num; + mask = (1 << --fifo) << shift; + val = on ? val | mask : val & ~mask; + + writel_relaxed(val, &cpsw->regs->ptype); +} + +static int cpsw_set_fifo_bw(struct cpsw_priv *priv, int fifo, int bw) +{ + struct cpsw_common *cpsw = priv->cpsw; + u32 val = 0, send_pct, shift; + struct cpsw_slave *slave; + int pct = 0, i; + + if (bw > priv->shp_cfg_speed * 1000) + goto err; + + /* shaping has to stay enabled for highest fifos linearly + * and fifo bw no more then interface can allow + */ + slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + send_pct = slave_read(slave, SEND_PERCENT); + for (i = CPSW_FIFO_SHAPERS_NUM; i > 0; i--) { + if (!bw) { + if (i >= fifo || !priv->fifo_bw[i]) + continue; + + dev_warn(priv->dev, "Prev FIFO%d is shaped", i); + continue; + } + + if (!priv->fifo_bw[i] && i > fifo) { + dev_err(priv->dev, "Upper FIFO%d is not shaped", i); + return -EINVAL; + } + + shift = (i - 1) * 8; + if (i == fifo) { + send_pct &= ~(CPSW_PCT_MASK << shift); + val = DIV_ROUND_UP(bw, priv->shp_cfg_speed * 10); + if (!val) + val = 1; + + send_pct |= val << shift; + pct += val; + continue; + } + + if (priv->fifo_bw[i]) + pct += (send_pct >> shift) & CPSW_PCT_MASK; + } + + if (pct >= 100) + goto err; + + slave_write(slave, send_pct, SEND_PERCENT); + priv->fifo_bw[fifo] = bw; + + dev_warn(priv->dev, "set FIFO%d bw = %d\n", fifo, + DIV_ROUND_CLOSEST(val * priv->shp_cfg_speed, 100)); + + return 0; +err: + dev_err(priv->dev, "Bandwidth doesn't fit in tc configuration"); + return -EINVAL; +} + +static int cpsw_set_fifo_rlimit(struct cpsw_priv *priv, int fifo, int bw) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_slave *slave; + u32 tx_in_ctl_rg, val; + int ret; + + ret = cpsw_set_fifo_bw(priv, fifo, bw); + if (ret) + return ret; + + slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + tx_in_ctl_rg = cpsw->version == CPSW_VERSION_1 ? + CPSW1_TX_IN_CTL : CPSW2_TX_IN_CTL; + + if (!bw) + cpsw_fifo_shp_on(priv, fifo, bw); + + val = slave_read(slave, tx_in_ctl_rg); + if (cpsw_shp_is_off(priv)) { + /* disable FIFOs rate limited queues */ + val &= ~(0xf << CPSW_FIFO_RATE_EN_SHIFT); + + /* set type of FIFO queues to normal priority mode */ + val &= ~(3 << CPSW_FIFO_QUEUE_TYPE_SHIFT); + + /* set type of FIFO queues to be rate limited */ + if (bw) + val |= 2 << CPSW_FIFO_QUEUE_TYPE_SHIFT; + else + priv->shp_cfg_speed = 0; + } + + /* toggle a FIFO rate limited queue */ + if (bw) + val |= BIT(fifo + CPSW_FIFO_RATE_EN_SHIFT); + else + val &= ~BIT(fifo + CPSW_FIFO_RATE_EN_SHIFT); + slave_write(slave, val, tx_in_ctl_rg); + + /* FIFO transmit shape enable */ + cpsw_fifo_shp_on(priv, fifo, bw); + return 0; +} + +/* Defaults: + * class A - prio 3 + * class B - prio 2 + * shaping for class A should be set first + */ +static int cpsw_set_cbs(struct net_device *ndev, + struct tc_cbs_qopt_offload *qopt) +{ + struct cpsw_priv *priv = netdev_priv(ndev); + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_slave *slave; + int prev_speed = 0; + int tc, ret, fifo; + u32 bw = 0; + + tc = netdev_txq_to_tc(priv->ndev, qopt->queue); + + /* enable channels in backward order, as highest FIFOs must be rate + * limited first and for compliance with CPDMA rate limited channels + * that also used in bacward order. FIFO0 cannot be rate limited. + */ + fifo = cpsw_tc_to_fifo(tc, ndev->num_tc); + if (!fifo) { + dev_err(priv->dev, "Last tc%d can't be rate limited", tc); + return -EINVAL; + } + + /* do nothing, it's disabled anyway */ + if (!qopt->enable && !priv->fifo_bw[fifo]) + return 0; + + /* shapers can be set if link speed is known */ + slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + if (slave->phy && slave->phy->link) { + if (priv->shp_cfg_speed && + priv->shp_cfg_speed != slave->phy->speed) + prev_speed = priv->shp_cfg_speed; + + priv->shp_cfg_speed = slave->phy->speed; + } + + if (!priv->shp_cfg_speed) { + dev_err(priv->dev, "Link speed is not known"); + return -1; + } + + ret = pm_runtime_get_sync(cpsw->dev); + if (ret < 0) { + pm_runtime_put_noidle(cpsw->dev); + return ret; + } + + bw = qopt->enable ? qopt->idleslope : 0; + ret = cpsw_set_fifo_rlimit(priv, fifo, bw); + if (ret) { + priv->shp_cfg_speed = prev_speed; + prev_speed = 0; + } + + if (bw && prev_speed) + dev_warn(priv->dev, + "Speed was changed, CBS shaper speeds are changed!"); + + pm_runtime_put_sync(cpsw->dev); + return ret; +} + +static int cpsw_set_mqprio(struct net_device *ndev, void *type_data) +{ + struct tc_mqprio_qopt_offload *mqprio = type_data; + struct cpsw_priv *priv = netdev_priv(ndev); + struct cpsw_common *cpsw = priv->cpsw; + int fifo, num_tc, count, offset; + struct cpsw_slave *slave; + u32 tx_prio_map = 0; + int i, tc, ret; + + num_tc = mqprio->qopt.num_tc; + if (num_tc > CPSW_TC_NUM) + return -EINVAL; + + if (mqprio->mode != TC_MQPRIO_MODE_DCB) + return -EINVAL; + + ret = pm_runtime_get_sync(cpsw->dev); + if (ret < 0) { + pm_runtime_put_noidle(cpsw->dev); + return ret; + } + + if (num_tc) { + for (i = 0; i < 8; i++) { + tc = mqprio->qopt.prio_tc_map[i]; + fifo = cpsw_tc_to_fifo(tc, num_tc); + tx_prio_map |= fifo << (4 * i); + } + + netdev_set_num_tc(ndev, num_tc); + for (i = 0; i < num_tc; i++) { + count = mqprio->qopt.count[i]; + offset = mqprio->qopt.offset[i]; + netdev_set_tc_queue(ndev, i, count, offset); + } + } + + if (!mqprio->qopt.hw) { + /* restore default configuration */ + netdev_reset_tc(ndev); + tx_prio_map = TX_PRIORITY_MAPPING; + } + + priv->mqprio_hw = mqprio->qopt.hw; + + offset = cpsw->version == CPSW_VERSION_1 ? + CPSW1_TX_PRI_MAP : CPSW2_TX_PRI_MAP; + + slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)]; + slave_write(slave, tx_prio_map, offset); + + pm_runtime_put_sync(cpsw->dev); + + return 0; +} + +int cpsw_ndo_setup_tc(struct net_device *ndev, enum tc_setup_type type, + void *type_data) +{ + switch (type) { + case TC_SETUP_QDISC_CBS: + return cpsw_set_cbs(ndev, type_data); + + case TC_SETUP_QDISC_MQPRIO: + return cpsw_set_mqprio(ndev, type_data); + + default: + return -EOPNOTSUPP; + } +} + +void cpsw_cbs_resume(struct cpsw_slave *slave, struct cpsw_priv *priv) +{ + int fifo, bw; + + for (fifo = CPSW_FIFO_SHAPERS_NUM; fifo > 0; fifo--) { + bw = priv->fifo_bw[fifo]; + if (!bw) + continue; + + cpsw_set_fifo_rlimit(priv, fifo, bw); + } +} + +void cpsw_mqprio_resume(struct cpsw_slave *slave, struct cpsw_priv *priv) +{ + struct cpsw_common *cpsw = priv->cpsw; + u32 tx_prio_map = 0; + int i, tc, fifo; + u32 tx_prio_rg; + + if (!priv->mqprio_hw) + return; + + for (i = 0; i < 8; i++) { + tc = netdev_get_prio_tc_map(priv->ndev, i); + fifo = CPSW_FIFO_SHAPERS_NUM - tc; + tx_prio_map |= fifo << (4 * i); + } + + tx_prio_rg = cpsw->version == CPSW_VERSION_1 ? + CPSW1_TX_PRI_MAP : CPSW2_TX_PRI_MAP; + + slave_write(slave, tx_prio_map, tx_prio_rg); +} + +int cpsw_fill_rx_channels(struct cpsw_priv *priv) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_meta_xdp *xmeta; + struct page_pool *pool; + struct page *page; + int ch_buf_num; + int ch, i, ret; + dma_addr_t dma; + + for (ch = 0; ch < cpsw->rx_ch_num; ch++) { + pool = cpsw->page_pool[ch]; + ch_buf_num = cpdma_chan_get_rx_buf_num(cpsw->rxv[ch].ch); + for (i = 0; i < ch_buf_num; i++) { + page = page_pool_dev_alloc_pages(pool); + if (!page) { + cpsw_err(priv, ifup, "allocate rx page err\n"); + return -ENOMEM; + } + + xmeta = page_address(page) + CPSW_XMETA_OFFSET; + xmeta->ndev = priv->ndev; + xmeta->ch = ch; + + dma = page_pool_get_dma_addr(page) + CPSW_HEADROOM; + ret = cpdma_chan_idle_submit_mapped(cpsw->rxv[ch].ch, + page, dma, + cpsw->rx_packet_max, + 0); + if (ret < 0) { + cpsw_err(priv, ifup, + "cannot submit page to channel %d rx, error %d\n", + ch, ret); + page_pool_recycle_direct(pool, page); + return ret; + } + } + + cpsw_info(priv, ifup, "ch %d rx, submitted %d descriptors\n", + ch, ch_buf_num); + } + + return 0; +} + +static struct page_pool *cpsw_create_page_pool(struct cpsw_common *cpsw, + int size) +{ + struct page_pool_params pp_params; + struct page_pool *pool; + + pp_params.order = 0; + pp_params.flags = PP_FLAG_DMA_MAP; + pp_params.pool_size = size; + pp_params.nid = NUMA_NO_NODE; + pp_params.dma_dir = DMA_BIDIRECTIONAL; + pp_params.dev = cpsw->dev; + + pool = page_pool_create(&pp_params); + if (IS_ERR(pool)) + dev_err(cpsw->dev, "cannot create rx page pool\n"); + + return pool; +} + +static int cpsw_create_rx_pool(struct cpsw_common *cpsw, int ch) +{ + struct page_pool *pool; + int ret = 0, pool_size; + + pool_size = cpdma_chan_get_rx_buf_num(cpsw->rxv[ch].ch); + pool = cpsw_create_page_pool(cpsw, pool_size); + if (IS_ERR(pool)) + ret = PTR_ERR(pool); + else + cpsw->page_pool[ch] = pool; + + return ret; +} + +static int cpsw_ndev_create_xdp_rxq(struct cpsw_priv *priv, int ch) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct xdp_rxq_info *rxq; + struct page_pool *pool; + int ret; + + pool = cpsw->page_pool[ch]; + rxq = &priv->xdp_rxq[ch]; + + ret = xdp_rxq_info_reg(rxq, priv->ndev, ch); + if (ret) + return ret; + + ret = xdp_rxq_info_reg_mem_model(rxq, MEM_TYPE_PAGE_POOL, pool); + if (ret) + xdp_rxq_info_unreg(rxq); + + return ret; +} + +static void cpsw_ndev_destroy_xdp_rxq(struct cpsw_priv *priv, int ch) +{ + struct xdp_rxq_info *rxq = &priv->xdp_rxq[ch]; + + if (!xdp_rxq_info_is_reg(rxq)) + return; + + xdp_rxq_info_unreg(rxq); +} + +void cpsw_destroy_xdp_rxqs(struct cpsw_common *cpsw) +{ + struct net_device *ndev; + int i, ch; + + for (ch = 0; ch < cpsw->rx_ch_num; ch++) { + for (i = 0; i < cpsw->data.slaves; i++) { + ndev = cpsw->slaves[i].ndev; + if (!ndev) + continue; + + cpsw_ndev_destroy_xdp_rxq(netdev_priv(ndev), ch); + } + + page_pool_destroy(cpsw->page_pool[ch]); + cpsw->page_pool[ch] = NULL; + } +} + +int cpsw_create_xdp_rxqs(struct cpsw_common *cpsw) +{ + struct net_device *ndev; + int i, ch, ret; + + for (ch = 0; ch < cpsw->rx_ch_num; ch++) { + ret = cpsw_create_rx_pool(cpsw, ch); + if (ret) + goto err_cleanup; + + /* using same page pool is allowed as no running rx handlers + * simultaneously for both ndevs + */ + for (i = 0; i < cpsw->data.slaves; i++) { + ndev = cpsw->slaves[i].ndev; + if (!ndev) + continue; + + ret = cpsw_ndev_create_xdp_rxq(netdev_priv(ndev), ch); + if (ret) + goto err_cleanup; + } + } + + return 0; + +err_cleanup: + cpsw_destroy_xdp_rxqs(cpsw); + + return ret; +} + +static int cpsw_xdp_prog_setup(struct cpsw_priv *priv, struct netdev_bpf *bpf) +{ + struct bpf_prog *prog = bpf->prog; + + if (!priv->xdpi.prog && !prog) + return 0; + + if (!xdp_attachment_flags_ok(&priv->xdpi, bpf)) + return -EBUSY; + + WRITE_ONCE(priv->xdp_prog, prog); + + xdp_attachment_setup(&priv->xdpi, bpf); + + return 0; +} + +int cpsw_ndo_bpf(struct net_device *ndev, struct netdev_bpf *bpf) +{ + struct cpsw_priv *priv = netdev_priv(ndev); + + switch (bpf->command) { + case XDP_SETUP_PROG: + return cpsw_xdp_prog_setup(priv, bpf); + + case XDP_QUERY_PROG: + return xdp_attachment_query(&priv->xdpi, bpf); + + default: + return -EINVAL; + } +} + +int cpsw_xdp_tx_frame(struct cpsw_priv *priv, struct xdp_frame *xdpf, + struct page *page, int port) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_meta_xdp *xmeta; + struct cpdma_chan *txch; + dma_addr_t dma; + int ret; + + xmeta = (void *)xdpf + CPSW_XMETA_OFFSET; + xmeta->ndev = priv->ndev; + xmeta->ch = 0; + txch = cpsw->txv[0].ch; + + if (page) { + dma = page_pool_get_dma_addr(page); + dma += xdpf->headroom + sizeof(struct xdp_frame); + ret = cpdma_chan_submit_mapped(txch, cpsw_xdpf_to_handle(xdpf), + dma, xdpf->len, port); + } else { + if (sizeof(*xmeta) > xdpf->headroom) { + xdp_return_frame_rx_napi(xdpf); + return -EINVAL; + } + + ret = cpdma_chan_submit(txch, cpsw_xdpf_to_handle(xdpf), + xdpf->data, xdpf->len, port); + } + + if (ret) { + priv->ndev->stats.tx_dropped++; + xdp_return_frame_rx_napi(xdpf); + } + + return ret; +} + +int cpsw_run_xdp(struct cpsw_priv *priv, int ch, struct xdp_buff *xdp, + struct page *page, int port) +{ + struct cpsw_common *cpsw = priv->cpsw; + struct net_device *ndev = priv->ndev; + int ret = CPSW_XDP_CONSUMED; + struct xdp_frame *xdpf; + struct bpf_prog *prog; + u32 act; + + rcu_read_lock(); + + prog = READ_ONCE(priv->xdp_prog); + if (!prog) { + ret = CPSW_XDP_PASS; + goto out; + } + + act = bpf_prog_run_xdp(prog, xdp); + switch (act) { + case XDP_PASS: + ret = CPSW_XDP_PASS; + break; + case XDP_TX: + xdpf = convert_to_xdp_frame(xdp); + if (unlikely(!xdpf)) + goto drop; + + cpsw_xdp_tx_frame(priv, xdpf, page, port); + break; + case XDP_REDIRECT: + if (xdp_do_redirect(ndev, xdp, prog)) + goto drop; + + /* Have to flush here, per packet, instead of doing it in bulk + * at the end of the napi handler. The RX devices on this + * particular hardware is sharing a common queue, so the + * incoming device might change per packet. + */ + xdp_do_flush_map(); + break; + default: + bpf_warn_invalid_xdp_action(act); + /* fall through */ + case XDP_ABORTED: + trace_xdp_exception(ndev, prog, act); + /* fall through -- handle aborts by dropping packet */ + case XDP_DROP: + goto drop; + } +out: + rcu_read_unlock(); + return ret; +drop: + rcu_read_unlock(); + page_pool_recycle_direct(cpsw->page_pool[ch], page); + return ret; +} diff --git a/drivers/net/ethernet/ti/cpsw_priv.h b/drivers/net/ethernet/ti/cpsw_priv.h index 65f0e410344d..0dd70e191cf1 100644 --- a/drivers/net/ethernet/ti/cpsw_priv.h +++ b/drivers/net/ethernet/ti/cpsw_priv.h @@ -383,6 +383,35 @@ struct addr_sync_ctx { int flush; /* flush flag */ }; +#define CPSW_XMETA_OFFSET ALIGN(sizeof(struct xdp_frame), sizeof(long)) + +#define CPSW_XDP_CONSUMED 1 +#define CPSW_XDP_PASS 0 + +struct __aligned(sizeof(long)) cpsw_meta_xdp { + struct net_device *ndev; + int ch; +}; + +/* The buf includes headroom compatible with both skb and xdpf */ +#define CPSW_HEADROOM_NA (max(XDP_PACKET_HEADROOM, NET_SKB_PAD) + NET_IP_ALIGN) +#define CPSW_HEADROOM ALIGN(CPSW_HEADROOM_NA, sizeof(long)) + +static inline int cpsw_is_xdpf_handle(void *handle) +{ + return (unsigned long)handle & BIT(0); +} + +static inline void *cpsw_xdpf_to_handle(struct xdp_frame *xdpf) +{ + return (void *)((unsigned long)xdpf | BIT(0)); +} + +static inline struct xdp_frame *cpsw_handle_to_xdpf(void *handle) +{ + return (struct xdp_frame *)((unsigned long)handle & ~BIT(0)); +} + int cpsw_init_common(struct cpsw_common *cpsw, void __iomem *ss_regs, int ale_ageout, phys_addr_t desc_mem_phys, int descs_pool_size); @@ -393,6 +422,29 @@ void cpsw_intr_disable(struct cpsw_common *cpsw); void cpsw_tx_handler(void *token, int len, int status); int cpsw_create_xdp_rxqs(struct cpsw_common *cpsw); void cpsw_destroy_xdp_rxqs(struct cpsw_common *cpsw); +int cpsw_ndo_bpf(struct net_device *ndev, struct netdev_bpf *bpf); +int cpsw_xdp_tx_frame(struct cpsw_priv *priv, struct xdp_frame *xdpf, + struct page *page, int port); +int cpsw_run_xdp(struct cpsw_priv *priv, int ch, struct xdp_buff *xdp, + struct page *page, int port); +irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id); +irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id); +int cpsw_tx_mq_poll(struct napi_struct *napi_tx, int budget); +int cpsw_tx_poll(struct napi_struct *napi_tx, int budget); +int cpsw_rx_mq_poll(struct napi_struct *napi_rx, int budget); +int cpsw_rx_poll(struct napi_struct *napi_rx, int budget); +void cpsw_rx_vlan_encap(struct sk_buff *skb); +void soft_reset(const char *module, void __iomem *reg); +void cpsw_set_slave_mac(struct cpsw_slave *slave, struct cpsw_priv *priv); +void cpsw_ndo_tx_timeout(struct net_device *ndev); +int cpsw_need_resplit(struct cpsw_common *cpsw); +int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd); +int cpsw_ndo_set_tx_maxrate(struct net_device *ndev, int queue, u32 rate); +int cpsw_ndo_setup_tc(struct net_device *ndev, enum tc_setup_type type, + void *type_data); +bool cpsw_shp_is_off(struct cpsw_priv *priv); +void cpsw_cbs_resume(struct cpsw_slave *slave, struct cpsw_priv *priv); +void cpsw_mqprio_resume(struct cpsw_slave *slave, struct cpsw_priv *priv); /* ethtool */ u32 cpsw_get_msglevel(struct net_device *ndev);