diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa/dpaa_eth.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 1684 |
1 files changed, 1216 insertions, 468 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c index 757b873735a5..3edc8d142dd5 100644 --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c @@ -1,38 +1,14 @@ -/* Copyright 2008 - 2016 Freescale Semiconductor Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * * Neither the name of Freescale Semiconductor nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") as published by the Free Software - * Foundation, either version 2 of that License or (at your option) any - * later version. - * - * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later +/* + * Copyright 2008 - 2016 Freescale Semiconductor Inc. + * Copyright 2020 NXP */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/init.h> +#include <linux/mod_devicetable.h> #include <linux/module.h> -#include <linux/of_platform.h> #include <linux/of_mdio.h> #include <linux/of_net.h> #include <linux/io.h> @@ -41,6 +17,7 @@ #include <linux/icmp.h> #include <linux/ip.h> #include <linux/ipv6.h> +#include <linux/platform_device.h> #include <linux/udp.h> #include <linux/tcp.h> #include <linux/net.h> @@ -51,9 +28,10 @@ #include <linux/percpu.h> #include <linux/dma-mapping.h> #include <linux/sort.h> +#include <linux/bpf.h> +#include <linux/bpf_trace.h> #include <soc/fsl/bman.h> #include <soc/fsl/qman.h> - #include "fman.h" #include "fman_port.h" #include "mac.h" @@ -86,7 +64,7 @@ MODULE_PARM_DESC(tx_timeout, "The Tx timeout in ms"); #define DPAA_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \ NETIF_MSG_LINK | NETIF_MSG_IFUP | \ - NETIF_MSG_IFDOWN) + NETIF_MSG_IFDOWN | NETIF_MSG_HW) #define DPAA_INGRESS_CS_THRESHOLD 0x10000000 /* Ingress congestion threshold on FMan ports @@ -123,7 +101,25 @@ MODULE_PARM_DESC(tx_timeout, "The Tx timeout in ms"); #define FSL_QMAN_MAX_OAL 127 /* Default alignment for start of data in an Rx FD */ +#ifdef CONFIG_DPAA_ERRATUM_A050385 +/* aligning data start to 64 avoids DMA transaction splits, unless the buffer + * is crossing a 4k page boundary + */ +#define DPAA_FD_DATA_ALIGNMENT (fman_has_errata_a050385() ? 64 : 16) +/* aligning to 256 avoids DMA transaction splits caused by 4k page boundary + * crossings; also, all SG fragments except the last must have a size multiple + * of 256 to avoid DMA transaction splits + */ +#define DPAA_A050385_ALIGN 256 +#define DPAA_FD_RX_DATA_ALIGNMENT (fman_has_errata_a050385() ? \ + DPAA_A050385_ALIGN : 16) +#else #define DPAA_FD_DATA_ALIGNMENT 16 +#define DPAA_FD_RX_DATA_ALIGNMENT DPAA_FD_DATA_ALIGNMENT +#endif + +/* The DPAA requires 256 bytes reserved and mapped for the SGT */ +#define DPAA_SGT_SIZE 256 /* Values for the L3R field of the FM Parse Results */ @@ -155,10 +151,20 @@ MODULE_PARM_DESC(tx_timeout, "The Tx timeout in ms"); #define DPAA_PARSE_RESULTS_SIZE sizeof(struct fman_prs_result) #define DPAA_TIME_STAMP_SIZE 8 #define DPAA_HASH_RESULTS_SIZE 8 -#define DPAA_RX_PRIV_DATA_SIZE (u16)(DPAA_TX_PRIV_DATA_SIZE + \ - dpaa_rx_extra_headroom) - -#define DPAA_ETH_RX_QUEUES 128 +#define DPAA_HWA_SIZE (DPAA_PARSE_RESULTS_SIZE + DPAA_TIME_STAMP_SIZE \ + + DPAA_HASH_RESULTS_SIZE) +#define DPAA_RX_PRIV_DATA_DEFAULT_SIZE (DPAA_TX_PRIV_DATA_SIZE + \ + XDP_PACKET_HEADROOM - DPAA_HWA_SIZE) +#ifdef CONFIG_DPAA_ERRATUM_A050385 +#define DPAA_RX_PRIV_DATA_A050385_SIZE (DPAA_A050385_ALIGN - DPAA_HWA_SIZE) +#define DPAA_RX_PRIV_DATA_SIZE (fman_has_errata_a050385() ? \ + DPAA_RX_PRIV_DATA_A050385_SIZE : \ + DPAA_RX_PRIV_DATA_DEFAULT_SIZE) +#else +#define DPAA_RX_PRIV_DATA_SIZE DPAA_RX_PRIV_DATA_DEFAULT_SIZE +#endif + +#define DPAA_ETH_PCD_RXQ_NUM 128 #define DPAA_ENQUEUE_RETRIES 100000 @@ -169,36 +175,20 @@ struct fm_port_fqs { struct dpaa_fq *tx_errq; struct dpaa_fq *rx_defq; struct dpaa_fq *rx_errq; + struct dpaa_fq *rx_pcdq; }; /* All the dpa bps in use at any moment */ static struct dpaa_bp *dpaa_bp_array[BM_MAX_NUM_OF_POOLS]; -/* The raw buffer size must be cacheline aligned */ #define DPAA_BP_RAW_SIZE 4096 -/* When using more than one buffer pool, the raw sizes are as follows: - * 1 bp: 4KB - * 2 bp: 2KB, 4KB - * 3 bp: 1KB, 2KB, 4KB - * 4 bp: 1KB, 2KB, 4KB, 8KB - */ -static inline size_t bpool_buffer_raw_size(u8 index, u8 cnt) -{ - size_t res = DPAA_BP_RAW_SIZE / 4; - u8 i; - for (i = (cnt < 3) ? cnt : 3; i < 3 + index; i++) - res *= 2; - return res; -} - -/* FMan-DMA requires 16-byte alignment for Rx buffers, but SKB_DATA_ALIGN is - * even stronger (SMP_CACHE_BYTES-aligned), so we just get away with that, - * via SKB_WITH_OVERHEAD(). We can't rely on netdev_alloc_frag() giving us - * half-page-aligned buffers, so we reserve some more space for start-of-buffer - * alignment. - */ -#define dpaa_bp_size(raw_size) SKB_WITH_OVERHEAD((raw_size) - SMP_CACHE_BYTES) +#ifdef CONFIG_DPAA_ERRATUM_A050385 +#define dpaa_bp_size(raw_size) (SKB_WITH_OVERHEAD(raw_size) & \ + ~(DPAA_A050385_ALIGN - 1)) +#else +#define dpaa_bp_size(raw_size) SKB_WITH_OVERHEAD(raw_size) +#endif static int dpaa_max_frm; @@ -207,12 +197,15 @@ static int dpaa_rx_extra_headroom; #define dpaa_get_max_mtu() \ (dpaa_max_frm - (VLAN_ETH_HLEN + ETH_FCS_LEN)) +static void dpaa_eth_cgr_set_speed(struct mac_device *mac_dev, int speed); + static int dpaa_netdev_init(struct net_device *net_dev, const struct net_device_ops *dpaa_ops, u16 tx_timeout) { struct dpaa_priv *priv = netdev_priv(net_dev); struct device *dev = net_dev->dev.parent; + struct mac_device *mac_dev = priv->mac_dev; struct dpaa_percpu_priv *percpu_priv; const u8 *mac_addr; int i, err; @@ -226,16 +219,16 @@ static int dpaa_netdev_init(struct net_device *net_dev, } net_dev->netdev_ops = dpaa_ops; - mac_addr = priv->mac_dev->addr; + mac_addr = mac_dev->addr; - net_dev->mem_start = priv->mac_dev->res->start; - net_dev->mem_end = priv->mac_dev->res->end; + net_dev->mem_start = (unsigned long)priv->mac_dev->res->start; + net_dev->mem_end = (unsigned long)priv->mac_dev->res->end; net_dev->min_mtu = ETH_MIN_MTU; net_dev->max_mtu = dpaa_get_max_mtu(); net_dev->hw_features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | - NETIF_F_LLTX); + NETIF_F_RXHASH); net_dev->hw_features |= NETIF_F_SG | NETIF_F_HIGHDMA; /* The kernels enables GSO automatically, if we declare NETIF_F_SG. @@ -245,26 +238,58 @@ static int dpaa_netdev_init(struct net_device *net_dev, net_dev->features |= NETIF_F_RXCSUM; net_dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; + net_dev->lltx = true; /* we do not want shared skbs on TX */ net_dev->priv_flags &= ~IFF_TX_SKB_SHARING; net_dev->features |= net_dev->hw_features; net_dev->vlan_features = net_dev->features; - memcpy(net_dev->perm_addr, mac_addr, net_dev->addr_len); - memcpy(net_dev->dev_addr, mac_addr, net_dev->addr_len); + net_dev->xdp_features = NETDEV_XDP_ACT_BASIC | + NETDEV_XDP_ACT_REDIRECT | + NETDEV_XDP_ACT_NDO_XMIT; + + if (is_valid_ether_addr(mac_addr)) { + memcpy(net_dev->perm_addr, mac_addr, net_dev->addr_len); + eth_hw_addr_set(net_dev, mac_addr); + } else { + eth_hw_addr_random(net_dev); + err = mac_dev->change_addr(mac_dev->fman_mac, + (const enet_addr_t *)net_dev->dev_addr); + if (err) { + dev_err(dev, "Failed to set random MAC address\n"); + return -EINVAL; + } + dev_info(dev, "Using random MAC address: %pM\n", + net_dev->dev_addr); + } net_dev->ethtool_ops = &dpaa_ethtool_ops; net_dev->needed_headroom = priv->tx_headroom; net_dev->watchdog_timeo = msecs_to_jiffies(tx_timeout); + /* The rest of the config is filled in by the mac device already */ + mac_dev->phylink_config.dev = &net_dev->dev; + mac_dev->phylink_config.type = PHYLINK_NETDEV; + mac_dev->update_speed = dpaa_eth_cgr_set_speed; + mac_dev->phylink = phylink_create(&mac_dev->phylink_config, + dev_fwnode(mac_dev->dev), + mac_dev->phy_if, + mac_dev->phylink_ops); + if (IS_ERR(mac_dev->phylink)) { + err = PTR_ERR(mac_dev->phylink); + dev_err_probe(dev, err, "Could not create phylink\n"); + return err; + } + /* start without the RUNNING flag, phylib controls it later */ netif_carrier_off(net_dev); err = register_netdev(net_dev); if (err < 0) { dev_err(dev, "register_netdev() = %d\n", err); + phylink_destroy(mac_dev->phylink); return err; } @@ -275,7 +300,8 @@ static int dpaa_stop(struct net_device *net_dev) { struct mac_device *mac_dev; struct dpaa_priv *priv; - int i, err, error; + int i, error; + int err = 0; priv = netdev_priv(net_dev); mac_dev = priv->mac_dev; @@ -284,12 +310,10 @@ static int dpaa_stop(struct net_device *net_dev) /* Allow the Fman (Tx) port to process in-flight frames before we * try switching it off. */ - usleep_range(5000, 10000); + msleep(200); - err = mac_dev->stop(mac_dev); - if (err < 0) - netif_err(priv, ifdown, net_dev, "mac_dev->stop() = %d\n", - err); + phylink_stop(mac_dev->phylink); + mac_dev->disable(mac_dev->fman_mac); for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { error = fman_port_disable(mac_dev->port[i]); @@ -297,14 +321,15 @@ static int dpaa_stop(struct net_device *net_dev) err = error; } - if (net_dev->phydev) - phy_disconnect(net_dev->phydev); + phylink_disconnect_phy(mac_dev->phylink); net_dev->phydev = NULL; + msleep(200); + return err; } -static void dpaa_tx_timeout(struct net_device *net_dev) +static void dpaa_tx_timeout(struct net_device *net_dev, unsigned int txqueue) { struct dpaa_percpu_priv *percpu_priv; const struct dpaa_priv *priv; @@ -342,18 +367,20 @@ static void dpaa_get_stats64(struct net_device *net_dev, } } -static int dpaa_setup_tc(struct net_device *net_dev, u32 handle, - u32 chain_index, __be16 proto, struct tc_to_netdev *tc) +static int dpaa_setup_tc(struct net_device *net_dev, enum tc_setup_type type, + void *type_data) { struct dpaa_priv *priv = netdev_priv(net_dev); + int num_txqs_per_tc = dpaa_num_txqs_per_tc(); + struct tc_mqprio_qopt *mqprio = type_data; u8 num_tc; int i; - if (tc->type != TC_SETUP_MQPRIO) - return -EINVAL; + if (type != TC_SETUP_QDISC_MQPRIO) + return -EOPNOTSUPP; - tc->mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; - num_tc = tc->mqprio->num_tc; + mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; + num_tc = mqprio->num_tc; if (num_tc == priv->num_tc) return 0; @@ -372,45 +399,30 @@ static int dpaa_setup_tc(struct net_device *net_dev, u32 handle, netdev_set_num_tc(net_dev, num_tc); for (i = 0; i < num_tc; i++) - netdev_set_tc_queue(net_dev, i, DPAA_TC_TXQ_NUM, - i * DPAA_TC_TXQ_NUM); + netdev_set_tc_queue(net_dev, i, num_txqs_per_tc, + i * num_txqs_per_tc); out: priv->num_tc = num_tc ? : 1; - netif_set_real_num_tx_queues(net_dev, priv->num_tc * DPAA_TC_TXQ_NUM); + netif_set_real_num_tx_queues(net_dev, priv->num_tc * num_txqs_per_tc); return 0; } static struct mac_device *dpaa_mac_dev_get(struct platform_device *pdev) { - struct platform_device *of_dev; struct dpaa_eth_data *eth_data; - struct device *dpaa_dev, *dev; - struct device_node *mac_node; + struct device *dpaa_dev; struct mac_device *mac_dev; dpaa_dev = &pdev->dev; eth_data = dpaa_dev->platform_data; - if (!eth_data) + if (!eth_data) { + dev_err(dpaa_dev, "eth_data missing\n"); return ERR_PTR(-ENODEV); - - mac_node = eth_data->mac_node; - - of_dev = of_find_device_by_node(mac_node); - if (!of_dev) { - dev_err(dpaa_dev, "of_find_device_by_node(%s) failed\n", - mac_node->full_name); - of_node_put(mac_node); - return ERR_PTR(-EINVAL); } - of_node_put(mac_node); - - dev = &of_dev->dev; - - mac_dev = dev_get_drvdata(dev); + mac_dev = eth_data->mac_dev; if (!mac_dev) { - dev_err(dpaa_dev, "dev_get_drvdata(%s) failed\n", - dev_name(dev)); + dev_err(dpaa_dev, "mac_dev missing\n"); return ERR_PTR(-EINVAL); } @@ -437,7 +449,7 @@ static int dpaa_set_mac_address(struct net_device *net_dev, void *addr) mac_dev = priv->mac_dev; err = mac_dev->change_addr(mac_dev->fman_mac, - (enet_addr_t *)net_dev->dev_addr); + (const enet_addr_t *)net_dev->dev_addr); if (err < 0) { netif_err(priv, drv, net_dev, "mac_dev->change_addr() = %d\n", err); @@ -450,6 +462,22 @@ static int dpaa_set_mac_address(struct net_device *net_dev, void *addr) return 0; } +static int dpaa_addr_sync(struct net_device *net_dev, const u8 *addr) +{ + const struct dpaa_priv *priv = netdev_priv(net_dev); + + return priv->mac_dev->add_hash_mac_addr(priv->mac_dev->fman_mac, + (enet_addr_t *)addr); +} + +static int dpaa_addr_unsync(struct net_device *net_dev, const u8 *addr) +{ + const struct dpaa_priv *priv = netdev_priv(net_dev); + + return priv->mac_dev->remove_hash_mac_addr(priv->mac_dev->fman_mac, + (enet_addr_t *)addr); +} + static void dpaa_set_rx_mode(struct net_device *net_dev) { const struct dpaa_priv *priv; @@ -467,9 +495,19 @@ static void dpaa_set_rx_mode(struct net_device *net_dev) err); } - err = priv->mac_dev->set_multi(net_dev, priv->mac_dev); + if (!!(net_dev->flags & IFF_ALLMULTI) != priv->mac_dev->allmulti) { + priv->mac_dev->allmulti = !priv->mac_dev->allmulti; + err = priv->mac_dev->set_allmulti(priv->mac_dev->fman_mac, + priv->mac_dev->allmulti); + if (err < 0) + netif_err(priv, drv, net_dev, + "mac_dev->set_allmulti() = %d\n", + err); + } + + err = __dev_mc_sync(net_dev, dpaa_addr_sync, dpaa_addr_unsync); if (err < 0) - netif_err(priv, drv, net_dev, "mac_dev->set_multi() = %d\n", + netif_err(priv, drv, net_dev, "dpaa_addr_sync() = %d\n", err); } @@ -485,7 +523,7 @@ static struct dpaa_bp *dpaa_bpid2pool(int bpid) static bool dpaa_bpid2pool_use(int bpid) { if (dpaa_bpid2pool(bpid)) { - atomic_inc(&dpaa_bp_array[bpid]->refs); + refcount_inc(&dpaa_bp_array[bpid]->refs); return true; } @@ -496,7 +534,7 @@ static bool dpaa_bpid2pool_use(int bpid) static void dpaa_bpid2pool_map(int bpid, struct dpaa_bp *dpaa_bp) { dpaa_bp_array[bpid] = dpaa_bp; - atomic_set(&dpaa_bp->refs, 1); + refcount_set(&dpaa_bp->refs, 1); } static int dpaa_bp_alloc_pool(struct dpaa_bp *dpaa_bp) @@ -584,7 +622,7 @@ static void dpaa_bp_free(struct dpaa_bp *dpaa_bp) if (!bp) return; - if (!atomic_dec_and_test(&bp->refs)) + if (!refcount_dec_and_test(&bp->refs)) return; if (bp->free_buf_cb) @@ -596,10 +634,7 @@ static void dpaa_bp_free(struct dpaa_bp *dpaa_bp) static void dpaa_bps_free(struct dpaa_priv *priv) { - int i; - - for (i = 0; i < DPAA_BPS_NUM; i++) - dpaa_bp_free(priv->dpaa_bps[i]); + dpaa_bp_free(priv->dpaa_bp); } /* Use multiple WQs for FQ assignment: @@ -627,10 +662,11 @@ static inline void dpaa_assign_wq(struct dpaa_fq *fq, int idx) fq->wq = 5; break; case FQ_TYPE_RX_DEFAULT: + case FQ_TYPE_RX_PCD: fq->wq = 6; break; case FQ_TYPE_TX: - switch (idx / DPAA_TC_TXQ_NUM) { + switch (idx / dpaa_num_txqs_per_tc()) { case 0: /* Low priority (best effort) */ fq->wq = 6; @@ -648,8 +684,8 @@ static inline void dpaa_assign_wq(struct dpaa_fq *fq, int idx) fq->wq = 0; break; default: - WARN(1, "Too many TX FQs: more than %d!\n", - DPAA_ETH_TXQ_NUM); + WARN(1, "Too many TX FQs: more than %zu!\n", + dpaa_max_num_txqs()); } break; default: @@ -666,7 +702,7 @@ static struct dpaa_fq *dpaa_fq_alloc(struct device *dev, struct dpaa_fq *dpaa_fq; int i; - dpaa_fq = devm_kzalloc(dev, sizeof(*dpaa_fq) * count, + dpaa_fq = devm_kcalloc(dev, count, sizeof(*dpaa_fq), GFP_KERNEL); if (!dpaa_fq) return NULL; @@ -687,6 +723,7 @@ static int dpaa_alloc_all_fqs(struct device *dev, struct list_head *list, struct fm_port_fqs *port_fqs) { struct dpaa_fq *dpaa_fq; + u32 fq_base, fq_base_aligned, i; dpaa_fq = dpaa_fq_alloc(dev, 0, 1, list, FQ_TYPE_RX_ERROR); if (!dpaa_fq) @@ -700,7 +737,28 @@ static int dpaa_alloc_all_fqs(struct device *dev, struct list_head *list, port_fqs->rx_defq = &dpaa_fq[0]; - if (!dpaa_fq_alloc(dev, 0, DPAA_ETH_TXQ_NUM, list, FQ_TYPE_TX_CONF_MQ)) + /* the PCD FQIDs range needs to be aligned for correct operation */ + if (qman_alloc_fqid_range(&fq_base, 2 * DPAA_ETH_PCD_RXQ_NUM)) + goto fq_alloc_failed; + + fq_base_aligned = ALIGN(fq_base, DPAA_ETH_PCD_RXQ_NUM); + + for (i = fq_base; i < fq_base_aligned; i++) + qman_release_fqid(i); + + for (i = fq_base_aligned + DPAA_ETH_PCD_RXQ_NUM; + i < (fq_base + 2 * DPAA_ETH_PCD_RXQ_NUM); i++) + qman_release_fqid(i); + + dpaa_fq = dpaa_fq_alloc(dev, fq_base_aligned, DPAA_ETH_PCD_RXQ_NUM, + list, FQ_TYPE_RX_PCD); + if (!dpaa_fq) + goto fq_alloc_failed; + + port_fqs->rx_pcdq = &dpaa_fq[0]; + + if (!dpaa_fq_alloc(dev, 0, dpaa_max_num_txqs(), list, + FQ_TYPE_TX_CONF_MQ)) goto fq_alloc_failed; dpaa_fq = dpaa_fq_alloc(dev, 0, 1, list, FQ_TYPE_TX_ERROR); @@ -715,7 +773,7 @@ static int dpaa_alloc_all_fqs(struct device *dev, struct list_head *list, port_fqs->tx_defq = &dpaa_fq[0]; - if (!dpaa_fq_alloc(dev, 0, DPAA_ETH_TXQ_NUM, list, FQ_TYPE_TX)) + if (!dpaa_fq_alloc(dev, 0, dpaa_max_num_txqs(), list, FQ_TYPE_TX)) goto fq_alloc_failed; return 0; @@ -751,16 +809,17 @@ static void dpaa_release_channel(void) qman_release_pool(rx_pool_channel); } -static void dpaa_eth_add_channel(u16 channel) +static void dpaa_eth_add_channel(u16 channel, struct device *dev) { u32 pool = QM_SDQCR_CHANNELS_POOL_CONV(channel); const cpumask_t *cpus = qman_affine_cpus(); struct qman_portal *portal; int cpu; - for_each_cpu(cpu, cpus) { + for_each_cpu_and(cpu, cpus, cpu_online_mask) { portal = qman_get_affine_portal(cpu); qman_p_static_dequeue_add(portal, pool); + qman_start_using_portal(portal, dev); } } @@ -806,12 +865,12 @@ static int dpaa_eth_cgr_init(struct dpaa_priv *priv) initcgr.we_mask = cpu_to_be16(QM_CGR_WE_CSCN_EN | QM_CGR_WE_CS_THRES); initcgr.cgr.cscn_en = QM_CGR_EN; - /* Set different thresholds based on the MAC speed. - * This may turn suboptimal if the MAC is reconfigured at a speed - * lower than its max, e.g. if a dTSEC later negotiates a 100Mbps link. - * In such cases, we ought to reconfigure the threshold, too. + /* Set different thresholds based on the configured MAC speed. + * This may turn suboptimal if the MAC is reconfigured at another + * speed, so MACs must call dpaa_eth_cgr_set_speed in their link_up + * callback. */ - if (priv->mac_dev->if_support & SUPPORTED_10000baseT_Full) + if (priv->mac_dev->phylink_config.mac_capabilities & MAC_10000FD) cs_th = DPAA_CS_THRESHOLD_10G; else cs_th = DPAA_CS_THRESHOLD_1G; @@ -838,6 +897,31 @@ out_error: return err; } +static void dpaa_eth_cgr_set_speed(struct mac_device *mac_dev, int speed) +{ + struct net_device *net_dev = to_net_dev(mac_dev->phylink_config.dev); + struct dpaa_priv *priv = netdev_priv(net_dev); + struct qm_mcc_initcgr opts = { }; + u32 cs_th; + int err; + + opts.we_mask = cpu_to_be16(QM_CGR_WE_CS_THRES); + switch (speed) { + case SPEED_10000: + cs_th = DPAA_CS_THRESHOLD_10G; + break; + case SPEED_1000: + default: + cs_th = DPAA_CS_THRESHOLD_1G; + break; + } + qm_cgr_cs_thres_set64(&opts.cgr.cs_thres, cs_th, 1); + + err = qman_update_cgr_safe(&priv->cgr_data.cgr, &opts); + if (err) + netdev_err(net_dev, "could not update speed: %d\n", err); +} + static inline void dpaa_setup_ingress(const struct dpaa_priv *priv, struct dpaa_fq *fq, const struct qman_fq *template) @@ -865,20 +949,25 @@ static inline void dpaa_setup_egress(const struct dpaa_priv *priv, } } -static void dpaa_fq_setup(struct dpaa_priv *priv, - const struct dpaa_fq_cbs *fq_cbs, - struct fman_port *tx_port) +static int dpaa_fq_setup(struct dpaa_priv *priv, + const struct dpaa_fq_cbs *fq_cbs, + struct fman_port *tx_port) { - int egress_cnt = 0, conf_cnt = 0, num_portals = 0, cpu; + int egress_cnt = 0, conf_cnt = 0, num_portals = 0, portal_cnt = 0, cpu; const cpumask_t *affine_cpus = qman_affine_cpus(); - u16 portals[NR_CPUS]; struct dpaa_fq *fq; + u16 *channels; + + channels = kcalloc(num_possible_cpus(), sizeof(u16), GFP_KERNEL); + if (!channels) + return -ENOMEM; + + for_each_cpu_and(cpu, affine_cpus, cpu_online_mask) + channels[num_portals++] = qman_affine_channel(cpu); - for_each_cpu(cpu, affine_cpus) - portals[num_portals++] = qman_affine_channel(cpu); if (num_portals == 0) dev_err(priv->net_dev->dev.parent, - "No Qman software (affine) channels found"); + "No Qman software (affine) channels found\n"); /* Initialize each FQ in the list */ list_for_each_entry(fq, &priv->dpaa_fq_list, list) { @@ -889,18 +978,20 @@ static void dpaa_fq_setup(struct dpaa_priv *priv, case FQ_TYPE_RX_ERROR: dpaa_setup_ingress(priv, fq, &fq_cbs->rx_errq); break; + case FQ_TYPE_RX_PCD: + if (!num_portals) + continue; + dpaa_setup_ingress(priv, fq, &fq_cbs->rx_defq); + fq->channel = channels[portal_cnt++ % num_portals]; + break; case FQ_TYPE_TX: dpaa_setup_egress(priv, fq, tx_port, &fq_cbs->egress_ern); - /* If we have more Tx queues than the number of cores, - * just ignore the extra ones. - */ - if (egress_cnt < DPAA_ETH_TXQ_NUM) - priv->egress_fqs[egress_cnt++] = &fq->fq_base; + priv->egress_fqs[egress_cnt++] = &fq->fq_base; break; case FQ_TYPE_TX_CONF_MQ: priv->conf_fqs[conf_cnt++] = &fq->fq_base; - /* fall through */ + fallthrough; case FQ_TYPE_TX_CONFIRM: dpaa_setup_ingress(priv, fq, &fq_cbs->tx_defq); break; @@ -914,16 +1005,9 @@ static void dpaa_fq_setup(struct dpaa_priv *priv, } } - /* Make sure all CPUs receive a corresponding Tx queue. */ - while (egress_cnt < DPAA_ETH_TXQ_NUM) { - list_for_each_entry(fq, &priv->dpaa_fq_list, list) { - if (fq->fq_type != FQ_TYPE_TX) - continue; - priv->egress_fqs[egress_cnt++] = &fq->fq_base; - if (egress_cnt == DPAA_ETH_TXQ_NUM) - break; - } - } + kfree(channels); + + return 0; } static inline int dpaa_tx_fq_to_id(const struct dpaa_priv *priv, @@ -931,7 +1015,7 @@ static inline int dpaa_tx_fq_to_id(const struct dpaa_priv *priv, { int i; - for (i = 0; i < DPAA_ETH_TXQ_NUM; i++) + for (i = 0; i < dpaa_max_num_txqs(); i++) if (priv->egress_fqs[i] == tx_fq) return i; @@ -1038,7 +1122,8 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable) /* Put all the ingress queues in our "ingress CGR". */ if (priv->use_ingress_cgr && (dpaa_fq->fq_type == FQ_TYPE_RX_DEFAULT || - dpaa_fq->fq_type == FQ_TYPE_RX_ERROR)) { + dpaa_fq->fq_type == FQ_TYPE_RX_ERROR || + dpaa_fq->fq_type == FQ_TYPE_RX_PCD)) { initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CGID); initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_CGE); initfq.fqd.cgid = (u8)priv->ingress_cgr.cgrid; @@ -1077,6 +1162,25 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable) dpaa_fq->fqid = qman_fq_fqid(fq); + if (dpaa_fq->fq_type == FQ_TYPE_RX_DEFAULT || + dpaa_fq->fq_type == FQ_TYPE_RX_PCD) { + err = xdp_rxq_info_reg(&dpaa_fq->xdp_rxq, dpaa_fq->net_dev, + dpaa_fq->fqid, 0); + if (err) { + dev_err(dev, "xdp_rxq_info_reg() = %d\n", err); + return err; + } + + err = xdp_rxq_info_reg_mem_model(&dpaa_fq->xdp_rxq, + MEM_TYPE_PAGE_ORDER0, NULL); + if (err) { + dev_err(dev, "xdp_rxq_info_reg_mem_model() = %d\n", + err); + xdp_rxq_info_unreg(&dpaa_fq->xdp_rxq); + return err; + } + } + return 0; } @@ -1106,6 +1210,11 @@ static int dpaa_fq_free_entry(struct device *dev, struct qman_fq *fq) } } + if ((dpaa_fq->fq_type == FQ_TYPE_RX_DEFAULT || + dpaa_fq->fq_type == FQ_TYPE_RX_PCD) && + xdp_rxq_info_is_reg(&dpaa_fq->xdp_rxq)) + xdp_rxq_info_unreg(&dpaa_fq->xdp_rxq); + qman_destroy_fq(fq); list_del(&dpaa_fq->list); @@ -1141,7 +1250,7 @@ static int dpaa_eth_init_tx_port(struct fman_port *port, struct dpaa_fq *errq, buf_prefix_content.priv_data_size = buf_layout->priv_data_size; buf_prefix_content.pass_prs_result = true; buf_prefix_content.pass_hash_result = true; - buf_prefix_content.pass_time_stamp = false; + buf_prefix_content.pass_time_stamp = true; buf_prefix_content.data_align = DPAA_FD_DATA_ALIGNMENT; params.specific_params.non_rx_params.err_fqid = errq->fqid; @@ -1167,15 +1276,15 @@ static int dpaa_eth_init_tx_port(struct fman_port *port, struct dpaa_fq *errq, return err; } -static int dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps, - size_t count, struct dpaa_fq *errq, - struct dpaa_fq *defq, +static int dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp *bp, + struct dpaa_fq *errq, + struct dpaa_fq *defq, struct dpaa_fq *pcdq, struct dpaa_buffer_layout *buf_layout) { struct fman_buffer_prefix_content buf_prefix_content; struct fman_port_rx_params *rx_p; struct fman_port_params params; - int i, err; + int err; memset(¶ms, 0, sizeof(params)); memset(&buf_prefix_content, 0, sizeof(buf_prefix_content)); @@ -1183,20 +1292,21 @@ static int dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps, buf_prefix_content.priv_data_size = buf_layout->priv_data_size; buf_prefix_content.pass_prs_result = true; buf_prefix_content.pass_hash_result = true; - buf_prefix_content.pass_time_stamp = false; - buf_prefix_content.data_align = DPAA_FD_DATA_ALIGNMENT; + buf_prefix_content.pass_time_stamp = true; + buf_prefix_content.data_align = DPAA_FD_RX_DATA_ALIGNMENT; rx_p = ¶ms.specific_params.rx_params; rx_p->err_fqid = errq->fqid; rx_p->dflt_fqid = defq->fqid; - - count = min(ARRAY_SIZE(rx_p->ext_buf_pools.ext_buf_pool), count); - rx_p->ext_buf_pools.num_of_pools_used = (u8)count; - for (i = 0; i < count; i++) { - rx_p->ext_buf_pools.ext_buf_pool[i].id = bps[i]->bpid; - rx_p->ext_buf_pools.ext_buf_pool[i].size = (u16)bps[i]->size; + if (pcdq) { + rx_p->pcd_base_fqid = pcdq->fqid; + rx_p->pcd_fqs_count = DPAA_ETH_PCD_RXQ_NUM; } + rx_p->ext_buf_pools.num_of_pools_used = 1; + rx_p->ext_buf_pools.ext_buf_pool[0].id = bp->bpid; + rx_p->ext_buf_pools.ext_buf_pool[0].size = (u16)bp->size; + err = fman_port_config(port, ¶ms); if (err) { pr_err("%s: fman_port_config failed\n", __func__); @@ -1218,7 +1328,7 @@ static int dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps, } static int dpaa_eth_init_ports(struct mac_device *mac_dev, - struct dpaa_bp **bps, size_t count, + struct dpaa_bp *bp, struct fm_port_fqs *port_fqs, struct dpaa_buffer_layout *buf_layout, struct device *dev) @@ -1232,8 +1342,9 @@ static int dpaa_eth_init_ports(struct mac_device *mac_dev, if (err) return err; - err = dpaa_eth_init_rx_port(rxport, bps, count, port_fqs->rx_errq, - port_fqs->rx_defq, &buf_layout[RX]); + err = dpaa_eth_init_rx_port(rxport, bp, port_fqs->rx_errq, + port_fqs->rx_defq, port_fqs->rx_pcdq, + &buf_layout[RX]); return err; } @@ -1245,7 +1356,7 @@ static int dpaa_bman_release(const struct dpaa_bp *dpaa_bp, err = bman_release(dpaa_bp->pool, bmb, cnt); /* Should never occur, address anyway to avoid leaking the buffers */ - if (unlikely(WARN_ON(err)) && dpaa_bp->free_buf_cb) + if (WARN_ON(err) && dpaa_bp->free_buf_cb) while (cnt-- > 0) dpaa_bp->free_buf_cb(dpaa_bp, &bmb[cnt]); @@ -1300,15 +1411,16 @@ static void dpaa_fd_release(const struct net_device *net_dev, vaddr = phys_to_virt(qm_fd_addr(fd)); sgt = vaddr + qm_fd_get_offset(fd); - dma_unmap_single(dpaa_bp->dev, qm_fd_addr(fd), dpaa_bp->size, - DMA_FROM_DEVICE); + dma_unmap_page(dpaa_bp->priv->rx_dma_dev, qm_fd_addr(fd), + DPAA_BP_RAW_SIZE, DMA_FROM_DEVICE); dpaa_release_sgt_members(sgt); - addr = dma_map_single(dpaa_bp->dev, vaddr, dpaa_bp->size, - DMA_FROM_DEVICE); - if (dma_mapping_error(dpaa_bp->dev, addr)) { - dev_err(dpaa_bp->dev, "DMA mapping failed"); + addr = dma_map_page(dpaa_bp->priv->rx_dma_dev, + virt_to_page(vaddr), 0, DPAA_BP_RAW_SIZE, + DMA_FROM_DEVICE); + if (dma_mapping_error(dpaa_bp->priv->rx_dma_dev, addr)) { + netdev_err(net_dev, "DMA mapping failed\n"); return; } bm_buffer_set64(&bmb, addr); @@ -1361,7 +1473,7 @@ static void count_ern(struct dpaa_percpu_priv *percpu_priv, static int dpaa_enable_tx_csum(struct dpaa_priv *priv, struct sk_buff *skb, struct qm_fd *fd, - char *parse_results) + void *parse_results) { struct fman_prs_result *parse_result; u16 ethertype = ntohs(skb->protocol); @@ -1383,13 +1495,8 @@ static int dpaa_enable_tx_csum(struct dpaa_priv *priv, parse_result = (struct fman_prs_result *)parse_results; /* If we're dealing with VLAN, get the real Ethernet type */ - if (ethertype == ETH_P_8021Q) { - /* We can't always assume the MAC header is set correctly - * by the stack, so reset to beginning of skb->data - */ - skb_reset_mac_header(skb); - ethertype = ntohs(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto); - } + if (ethertype == ETH_P_8021Q) + ethertype = ntohs(skb_vlan_eth_hdr(skb)->h_vlan_encapsulated_proto); /* Fill in the relevant L3 parse result fields * and read the L4 protocol type @@ -1453,25 +1560,24 @@ return_error: static int dpaa_bp_add_8_bufs(const struct dpaa_bp *dpaa_bp) { - struct device *dev = dpaa_bp->dev; + struct net_device *net_dev = dpaa_bp->priv->net_dev; struct bm_buffer bmb[8]; dma_addr_t addr; - void *new_buf; + struct page *p; u8 i; for (i = 0; i < 8; i++) { - new_buf = netdev_alloc_frag(dpaa_bp->raw_size); - if (unlikely(!new_buf)) { - dev_err(dev, "netdev_alloc_frag() failed, size %zu\n", - dpaa_bp->raw_size); + p = dev_alloc_pages(0); + if (unlikely(!p)) { + netdev_err(net_dev, "dev_alloc_pages() failed\n"); goto release_previous_buffs; } - new_buf = PTR_ALIGN(new_buf, SMP_CACHE_BYTES); - addr = dma_map_single(dev, new_buf, - dpaa_bp->size, DMA_FROM_DEVICE); - if (unlikely(dma_mapping_error(dev, addr))) { - dev_err(dpaa_bp->dev, "DMA map failed"); + addr = dma_map_page(dpaa_bp->priv->rx_dma_dev, p, 0, + DPAA_BP_RAW_SIZE, DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(dpaa_bp->priv->rx_dma_dev, + addr))) { + netdev_err(net_dev, "DMA map failed\n"); goto release_previous_buffs; } @@ -1546,18 +1652,13 @@ static int dpaa_eth_refill_bpools(struct dpaa_priv *priv) { struct dpaa_bp *dpaa_bp; int *countptr; - int res, i; - for (i = 0; i < DPAA_BPS_NUM; i++) { - dpaa_bp = priv->dpaa_bps[i]; - if (!dpaa_bp) - return -EINVAL; - countptr = this_cpu_ptr(dpaa_bp->percpu_count); - res = dpaa_eth_refill_bpool(dpaa_bp, countptr); - if (res) - return res; - } - return 0; + dpaa_bp = priv->dpaa_bp; + if (!dpaa_bp) + return -EINVAL; + countptr = this_cpu_ptr(dpaa_bp->percpu_count); + + return dpaa_eth_refill_bpool(dpaa_bp, countptr); } /* Cleanup function for outgoing frame descriptors that were built on Tx path, @@ -1565,54 +1666,87 @@ static int dpaa_eth_refill_bpools(struct dpaa_priv *priv) * Skb freeing is not handled here. * * This function may be called on error paths in the Tx function, so guard - * against cases when not all fd relevant fields were filled in. + * against cases when not all fd relevant fields were filled in. To avoid + * reading the invalid transmission timestamp for the error paths set ts to + * false. * * Return the skb backpointer, since for S/G frames the buffer containing it * gets freed here. + * + * No skb backpointer is set when transmitting XDP frames. Cleanup the buffer + * and return NULL in this case. */ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv, - const struct qm_fd *fd) + const struct qm_fd *fd, bool ts) { const enum dma_data_direction dma_dir = DMA_TO_DEVICE; struct device *dev = priv->net_dev->dev.parent; + struct skb_shared_hwtstamps shhwtstamps; dma_addr_t addr = qm_fd_addr(fd); + void *vaddr = phys_to_virt(addr); const struct qm_sg_entry *sgt; - struct sk_buff **skbh, *skb; - int nr_frags, i; - - skbh = (struct sk_buff **)phys_to_virt(addr); - skb = *skbh; + struct dpaa_eth_swbp *swbp; + struct sk_buff *skb; + u64 ns; + int i; if (unlikely(qm_fd_get_format(fd) == qm_fd_sg)) { - nr_frags = skb_shinfo(skb)->nr_frags; - dma_unmap_single(dev, addr, qm_fd_get_offset(fd) + - sizeof(struct qm_sg_entry) * (1 + nr_frags), - dma_dir); + dma_unmap_page(priv->tx_dma_dev, addr, + qm_fd_get_offset(fd) + DPAA_SGT_SIZE, + dma_dir); /* The sgt buffer has been allocated with netdev_alloc_frag(), * it's from lowmem. */ - sgt = phys_to_virt(addr + qm_fd_get_offset(fd)); + sgt = vaddr + qm_fd_get_offset(fd); /* sgt[0] is from lowmem, was dma_map_single()-ed */ - dma_unmap_single(dev, qm_sg_addr(&sgt[0]), + dma_unmap_single(priv->tx_dma_dev, qm_sg_addr(&sgt[0]), qm_sg_entry_get_len(&sgt[0]), dma_dir); /* remaining pages were mapped with skb_frag_dma_map() */ - for (i = 1; i < nr_frags; i++) { + for (i = 1; (i < DPAA_SGT_MAX_ENTRIES) && + !qm_sg_entry_is_final(&sgt[i - 1]); i++) { WARN_ON(qm_sg_entry_is_ext(&sgt[i])); - dma_unmap_page(dev, qm_sg_addr(&sgt[i]), + dma_unmap_page(priv->tx_dma_dev, qm_sg_addr(&sgt[i]), qm_sg_entry_get_len(&sgt[i]), dma_dir); } - - /* Free the page frag that we allocated on Tx */ - skb_free_frag(phys_to_virt(addr)); } else { - dma_unmap_single(dev, addr, - skb_tail_pointer(skb) - (u8 *)skbh, dma_dir); + dma_unmap_single(priv->tx_dma_dev, addr, + qm_fd_get_offset(fd) + qm_fd_get_length(fd), + dma_dir); + } + + swbp = (struct dpaa_eth_swbp *)vaddr; + skb = swbp->skb; + + /* No skb backpointer is set when running XDP. An xdp_frame + * backpointer is saved instead. + */ + if (!skb) { + xdp_return_frame(swbp->xdpf); + return NULL; + } + + /* DMA unmapping is required before accessing the HW provided info */ + if (ts && priv->tx_tstamp && + skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { + memset(&shhwtstamps, 0, sizeof(shhwtstamps)); + + if (!fman_port_get_tstamp(priv->mac_dev->port[TX], vaddr, + &ns)) { + shhwtstamps.hwtstamp = ns_to_ktime(ns); + skb_tstamp_tx(skb, &shhwtstamps); + } else { + dev_warn(dev, "fman_port_get_tstamp failed!\n"); + } } + if (qm_fd_get_format(fd) == qm_fd_sg) + /* Free the page that we allocated on Tx for the SGT */ + free_pages((unsigned long)vaddr, 0); + return skb; } @@ -1633,6 +1767,8 @@ static u8 rx_csum_offload(const struct dpaa_priv *priv, const struct qm_fd *fd) return CHECKSUM_NONE; } +#define PTR_IS_ALIGNED(x, a) (IS_ALIGNED((unsigned long)(x), (a))) + /* Build a linear skb around the received buffer. * We are guaranteed there is enough room at the end of the data buffer to * accommodate the shared info area of the skb. @@ -1655,11 +1791,8 @@ static struct sk_buff *contig_fd_to_skb(const struct dpaa_priv *priv, skb = build_skb(vaddr, dpaa_bp->size + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); - if (unlikely(!skb)) { - WARN_ONCE(1, "Build skb failure on Rx\n"); + if (WARN_ONCE(!skb, "Build skb failure on Rx\n")) goto free_buffer; - } - WARN_ON(fd_off != priv->rx_headroom); skb_reserve(skb, fd_off); skb_put(skb, qm_fd_get_length(fd)); @@ -1668,7 +1801,7 @@ static struct sk_buff *contig_fd_to_skb(const struct dpaa_priv *priv, return skb; free_buffer: - skb_free_frag(vaddr); + free_pages((unsigned long)vaddr, 0); return NULL; } @@ -1686,41 +1819,40 @@ static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv, struct page *page, *head_page; struct dpaa_bp *dpaa_bp; void *vaddr, *sg_vaddr; - int frag_off, frag_len; struct sk_buff *skb; dma_addr_t sg_addr; int page_offset; unsigned int sz; int *count_ptr; - int i; + int i, j; vaddr = phys_to_virt(addr); WARN_ON(!IS_ALIGNED((unsigned long)vaddr, SMP_CACHE_BYTES)); /* Iterate through the SGT entries and add data buffers to the skb */ sgt = vaddr + fd_off; + skb = NULL; for (i = 0; i < DPAA_SGT_MAX_ENTRIES; i++) { /* Extension bit is not supported */ WARN_ON(qm_sg_entry_is_ext(&sgt[i])); sg_addr = qm_sg_addr(&sgt[i]); sg_vaddr = phys_to_virt(sg_addr); - WARN_ON(!IS_ALIGNED((unsigned long)sg_vaddr, - SMP_CACHE_BYTES)); + WARN_ON(!PTR_IS_ALIGNED(sg_vaddr, SMP_CACHE_BYTES)); + + dma_unmap_page(priv->rx_dma_dev, sg_addr, + DPAA_BP_RAW_SIZE, DMA_FROM_DEVICE); /* We may use multiple Rx pools */ dpaa_bp = dpaa_bpid2pool(sgt[i].bpid); if (!dpaa_bp) goto free_buffers; - count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); - dma_unmap_single(dpaa_bp->dev, sg_addr, dpaa_bp->size, - DMA_FROM_DEVICE); - if (i == 0) { + if (!skb) { sz = dpaa_bp->size + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); skb = build_skb(sg_vaddr, sz); - if (WARN_ON(unlikely(!skb))) + if (WARN_ON(!skb)) goto free_buffers; skb->ip_summed = rx_csum_offload(priv, fd); @@ -1729,6 +1861,11 @@ static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv, * on Tx, if extra headers are added. */ WARN_ON(fd_off != priv->rx_headroom); + /* The offset to data start within the buffer holding + * the SGT should always be equal to the offset to data + * start within the first buffer holding the frame. + */ + WARN_ON_ONCE(fd_off != qm_sg_entry_get_off(&sgt[i])); skb_reserve(skb, fd_off); skb_put(skb, qm_sg_entry_get_len(&sgt[i])); } else { @@ -1742,23 +1879,27 @@ static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv, page = virt_to_page(sg_vaddr); head_page = virt_to_head_page(sg_vaddr); - /* Compute offset in (possibly tail) page */ + /* Compute offset of sg_vaddr in (possibly tail) page */ page_offset = ((unsigned long)sg_vaddr & (PAGE_SIZE - 1)) + (page_address(page) - page_address(head_page)); - /* page_offset only refers to the beginning of sgt[i]; - * but the buffer itself may have an internal offset. + + /* Non-initial SGT entries should not have a buffer + * offset. */ - frag_off = qm_sg_entry_get_off(&sgt[i]) + page_offset; - frag_len = qm_sg_entry_get_len(&sgt[i]); + WARN_ON_ONCE(qm_sg_entry_get_off(&sgt[i])); + /* skb_add_rx_frag() does no checking on the page; if * we pass it a tail page, we'll end up with - * bad page accounting and eventually with segafults. + * bad page accounting and eventually with segfaults. */ - skb_add_rx_frag(skb, i - 1, head_page, frag_off, - frag_len, dpaa_bp->size); + skb_add_rx_frag(skb, i - 1, head_page, page_offset, + qm_sg_entry_get_len(&sgt[i]), + dpaa_bp->size); } + /* Update the pool count for the current {cpu x bpool} */ + count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); (*count_ptr)--; if (qm_sg_entry_is_final(&sgt[i])) @@ -1767,35 +1908,34 @@ static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv, WARN_ONCE(i == DPAA_SGT_MAX_ENTRIES, "No final bit on SGT\n"); /* free the SG table buffer */ - skb_free_frag(vaddr); + free_pages((unsigned long)vaddr, 0); return skb; free_buffers: - /* compensate sw bpool counter changes */ - for (i--; i >= 0; i--) { - dpaa_bp = dpaa_bpid2pool(sgt[i].bpid); - if (dpaa_bp) { - count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); - (*count_ptr)++; - } - } /* free all the SG entries */ - for (i = 0; i < DPAA_SGT_MAX_ENTRIES ; i++) { - sg_addr = qm_sg_addr(&sgt[i]); + for (j = 0; j < DPAA_SGT_MAX_ENTRIES ; j++) { + sg_addr = qm_sg_addr(&sgt[j]); sg_vaddr = phys_to_virt(sg_addr); - skb_free_frag(sg_vaddr); - dpaa_bp = dpaa_bpid2pool(sgt[i].bpid); - if (dpaa_bp) { - count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); - (*count_ptr)--; + /* all pages 0..i were unmaped */ + if (j > i) + dma_unmap_page(priv->rx_dma_dev, qm_sg_addr(&sgt[j]), + DPAA_BP_RAW_SIZE, DMA_FROM_DEVICE); + free_pages((unsigned long)sg_vaddr, 0); + /* counters 0..i-1 were decremented */ + if (j >= i) { + dpaa_bp = dpaa_bpid2pool(sgt[j].bpid); + if (dpaa_bp) { + count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); + (*count_ptr)--; + } } - if (qm_sg_entry_is_final(&sgt[i])) + if (qm_sg_entry_is_final(&sgt[j])) break; } /* free the SGT fragment */ - skb_free_frag(vaddr); + free_pages((unsigned long)vaddr, 0); return NULL; } @@ -1805,10 +1945,9 @@ static int skb_to_contig_fd(struct dpaa_priv *priv, int *offset) { struct net_device *net_dev = priv->net_dev; - struct device *dev = net_dev->dev.parent; enum dma_data_direction dma_dir; - unsigned char *buffer_start; - struct sk_buff **skbh; + struct dpaa_eth_swbp *swbp; + unsigned char *buff_start; dma_addr_t addr; int err; @@ -1816,11 +1955,11 @@ static int skb_to_contig_fd(struct dpaa_priv *priv, * available, so just use that for offset. */ fd->bpid = FSL_DPAA_BPID_INV; - buffer_start = skb->data - priv->tx_headroom; + buff_start = skb->data - priv->tx_headroom; dma_dir = DMA_TO_DEVICE; - skbh = (struct sk_buff **)buffer_start; - *skbh = skb; + swbp = (struct dpaa_eth_swbp *)buff_start; + swbp->skb = skb; /* Enable L3/L4 hardware checksum computation. * @@ -1828,7 +1967,7 @@ static int skb_to_contig_fd(struct dpaa_priv *priv, * need to write into the skb. */ err = dpaa_enable_tx_csum(priv, skb, fd, - ((char *)skbh) + DPAA_TX_PRIV_DATA_SIZE); + buff_start + DPAA_TX_PRIV_DATA_SIZE); if (unlikely(err < 0)) { if (net_ratelimit()) netif_err(priv, tx_err, net_dev, "HW csum error: %d\n", @@ -1841,9 +1980,9 @@ static int skb_to_contig_fd(struct dpaa_priv *priv, fd->cmd |= cpu_to_be32(FM_FD_CMD_FCO); /* Map the entire buffer size that may be seen by FMan, but no more */ - addr = dma_map_single(dev, skbh, - skb_tail_pointer(skb) - buffer_start, dma_dir); - if (unlikely(dma_mapping_error(dev, addr))) { + addr = dma_map_single(priv->tx_dma_dev, buff_start, + priv->tx_headroom + skb->len, dma_dir); + if (unlikely(dma_mapping_error(priv->tx_dma_dev, addr))) { if (net_ratelimit()) netif_err(priv, tx_err, net_dev, "dma_map_single() failed\n"); return -EINVAL; @@ -1859,25 +1998,22 @@ static int skb_to_sg_fd(struct dpaa_priv *priv, const enum dma_data_direction dma_dir = DMA_TO_DEVICE; const int nr_frags = skb_shinfo(skb)->nr_frags; struct net_device *net_dev = priv->net_dev; - struct device *dev = net_dev->dev.parent; + struct dpaa_eth_swbp *swbp; struct qm_sg_entry *sgt; - struct sk_buff **skbh; - int i, j, err, sz; - void *buffer_start; + void *buff_start; skb_frag_t *frag; dma_addr_t addr; size_t frag_len; - void *sgt_buf; - - /* get a page frag to store the SGTable */ - sz = SKB_DATA_ALIGN(priv->tx_headroom + - sizeof(struct qm_sg_entry) * (1 + nr_frags)); - sgt_buf = netdev_alloc_frag(sz); - if (unlikely(!sgt_buf)) { - netdev_err(net_dev, "netdev_alloc_frag() failed for size %d\n", - sz); + struct page *p; + int i, j, err; + + /* get a page to store the SGTable */ + p = dev_alloc_pages(0); + if (unlikely(!p)) { + netdev_err(net_dev, "dev_alloc_pages() failed\n"); return -ENOMEM; } + buff_start = page_address(p); /* Enable L3/L4 hardware checksum computation. * @@ -1885,7 +2021,7 @@ static int skb_to_sg_fd(struct dpaa_priv *priv, * need to write into the skb. */ err = dpaa_enable_tx_csum(priv, skb, fd, - sgt_buf + DPAA_TX_PRIV_DATA_SIZE); + buff_start + DPAA_TX_PRIV_DATA_SIZE); if (unlikely(err < 0)) { if (net_ratelimit()) netif_err(priv, tx_err, net_dev, "HW csum error: %d\n", @@ -1893,54 +2029,56 @@ static int skb_to_sg_fd(struct dpaa_priv *priv, goto csum_failed; } - sgt = (struct qm_sg_entry *)(sgt_buf + priv->tx_headroom); - qm_sg_entry_set_len(&sgt[0], skb_headlen(skb)); + /* SGT[0] is used by the linear part */ + sgt = (struct qm_sg_entry *)(buff_start + priv->tx_headroom); + frag_len = skb_headlen(skb); + qm_sg_entry_set_len(&sgt[0], frag_len); sgt[0].bpid = FSL_DPAA_BPID_INV; sgt[0].offset = 0; - addr = dma_map_single(dev, skb->data, + addr = dma_map_single(priv->tx_dma_dev, skb->data, skb_headlen(skb), dma_dir); - if (unlikely(dma_mapping_error(dev, addr))) { - dev_err(dev, "DMA mapping failed"); + if (unlikely(dma_mapping_error(priv->tx_dma_dev, addr))) { + netdev_err(priv->net_dev, "DMA mapping failed\n"); err = -EINVAL; goto sg0_map_failed; } qm_sg_entry_set64(&sgt[0], addr); /* populate the rest of SGT entries */ - frag = &skb_shinfo(skb)->frags[0]; - frag_len = frag->size; - for (i = 1; i <= nr_frags; i++, frag++) { + for (i = 0; i < nr_frags; i++) { + frag = &skb_shinfo(skb)->frags[i]; + frag_len = skb_frag_size(frag); WARN_ON(!skb_frag_page(frag)); - addr = skb_frag_dma_map(dev, frag, 0, + addr = skb_frag_dma_map(priv->tx_dma_dev, frag, 0, frag_len, dma_dir); - if (unlikely(dma_mapping_error(dev, addr))) { - dev_err(dev, "DMA mapping failed"); + if (unlikely(dma_mapping_error(priv->tx_dma_dev, addr))) { + netdev_err(priv->net_dev, "DMA mapping failed\n"); err = -EINVAL; goto sg_map_failed; } - qm_sg_entry_set_len(&sgt[i], frag_len); - sgt[i].bpid = FSL_DPAA_BPID_INV; - sgt[i].offset = 0; + qm_sg_entry_set_len(&sgt[i + 1], frag_len); + sgt[i + 1].bpid = FSL_DPAA_BPID_INV; + sgt[i + 1].offset = 0; /* keep the offset in the address */ - qm_sg_entry_set64(&sgt[i], addr); - frag_len = frag->size; + qm_sg_entry_set64(&sgt[i + 1], addr); } - qm_sg_entry_set_f(&sgt[i - 1], frag_len); + /* Set the final bit in the last used entry of the SGT */ + qm_sg_entry_set_f(&sgt[nr_frags], frag_len); + + /* set fd offset to priv->tx_headroom */ qm_fd_set_sg(fd, priv->tx_headroom, skb->len); /* DMA map the SGT page */ - buffer_start = (void *)sgt - priv->tx_headroom; - skbh = (struct sk_buff **)buffer_start; - *skbh = skb; - - addr = dma_map_single(dev, buffer_start, priv->tx_headroom + - sizeof(struct qm_sg_entry) * (1 + nr_frags), - dma_dir); - if (unlikely(dma_mapping_error(dev, addr))) { - dev_err(dev, "DMA mapping failed"); + swbp = (struct dpaa_eth_swbp *)buff_start; + swbp->skb = skb; + + addr = dma_map_page(priv->tx_dma_dev, p, 0, + priv->tx_headroom + DPAA_SGT_SIZE, dma_dir); + if (unlikely(dma_mapping_error(priv->tx_dma_dev, addr))) { + netdev_err(priv->net_dev, "DMA mapping failed\n"); err = -EINVAL; goto sgt_map_failed; } @@ -1954,11 +2092,11 @@ static int skb_to_sg_fd(struct dpaa_priv *priv, sgt_map_failed: sg_map_failed: for (j = 0; j < i; j++) - dma_unmap_page(dev, qm_sg_addr(&sgt[j]), + dma_unmap_page(priv->tx_dma_dev, qm_sg_addr(&sgt[j]), qm_sg_entry_get_len(&sgt[j]), dma_dir); sg0_map_failed: csum_failed: - skb_free_frag(sgt_buf); + free_pages((unsigned long)buff_start, 0); return err; } @@ -1985,7 +2123,6 @@ static inline int dpaa_xmit(struct dpaa_priv *priv, } if (unlikely(err < 0)) { - percpu_stats->tx_errors++; percpu_stats->tx_fifo_errors++; return err; } @@ -1996,14 +2133,173 @@ static inline int dpaa_xmit(struct dpaa_priv *priv, return 0; } -static int dpaa_start_xmit(struct sk_buff *skb, struct net_device *net_dev) +#ifdef CONFIG_DPAA_ERRATUM_A050385 +static int dpaa_a050385_wa_skb(struct net_device *net_dev, struct sk_buff **s) +{ + struct dpaa_priv *priv = netdev_priv(net_dev); + struct sk_buff *new_skb, *skb = *s; + unsigned char *start, i; + + /* check linear buffer alignment */ + if (!PTR_IS_ALIGNED(skb->data, DPAA_A050385_ALIGN)) + goto workaround; + + /* linear buffers just need to have an aligned start */ + if (!skb_is_nonlinear(skb)) + return 0; + + /* linear data size for nonlinear skbs needs to be aligned */ + if (!IS_ALIGNED(skb_headlen(skb), DPAA_A050385_ALIGN)) + goto workaround; + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + + /* all fragments need to have aligned start addresses */ + if (!IS_ALIGNED(skb_frag_off(frag), DPAA_A050385_ALIGN)) + goto workaround; + + /* all but last fragment need to have aligned sizes */ + if (!IS_ALIGNED(skb_frag_size(frag), DPAA_A050385_ALIGN) && + (i < skb_shinfo(skb)->nr_frags - 1)) + goto workaround; + } + + return 0; + +workaround: + /* copy all the skb content into a new linear buffer */ + new_skb = netdev_alloc_skb(net_dev, skb->len + DPAA_A050385_ALIGN - 1 + + priv->tx_headroom); + if (!new_skb) + return -ENOMEM; + + /* NET_SKB_PAD bytes already reserved, adding up to tx_headroom */ + skb_reserve(new_skb, priv->tx_headroom - NET_SKB_PAD); + + /* Workaround for DPAA_A050385 requires data start to be aligned */ + start = PTR_ALIGN(new_skb->data, DPAA_A050385_ALIGN); + if (start - new_skb->data) + skb_reserve(new_skb, start - new_skb->data); + + skb_put(new_skb, skb->len); + skb_copy_bits(skb, 0, new_skb->data, skb->len); + skb_copy_header(new_skb, skb); + new_skb->dev = skb->dev; + + /* Copy relevant timestamp info from the old skb to the new */ + if (priv->tx_tstamp) { + skb_shinfo(new_skb)->tx_flags = skb_shinfo(skb)->tx_flags; + skb_shinfo(new_skb)->hwtstamps = skb_shinfo(skb)->hwtstamps; + skb_shinfo(new_skb)->tskey = skb_shinfo(skb)->tskey; + if (skb->sk) + skb_set_owner_w(new_skb, skb->sk); + } + + /* We move the headroom when we align it so we have to reset the + * network and transport header offsets relative to the new data + * pointer. The checksum offload relies on these offsets. + */ + skb_set_network_header(new_skb, skb_network_offset(skb)); + skb_set_transport_header(new_skb, skb_transport_offset(skb)); + + dev_kfree_skb(skb); + *s = new_skb; + + return 0; +} + +static int dpaa_a050385_wa_xdpf(struct dpaa_priv *priv, + struct xdp_frame **init_xdpf) +{ + struct xdp_frame *new_xdpf, *xdpf = *init_xdpf; + void *new_buff, *aligned_data; + struct page *p; + u32 data_shift; + int headroom; + + /* Check the data alignment and make sure the headroom is large + * enough to store the xdpf backpointer. Use an aligned headroom + * value. + * + * Due to alignment constraints, we give XDP access to the full 256 + * byte frame headroom. If the XDP program uses all of it, copy the + * data to a new buffer and make room for storing the backpointer. + */ + if (PTR_IS_ALIGNED(xdpf->data, DPAA_FD_DATA_ALIGNMENT) && + xdpf->headroom >= priv->tx_headroom) { + xdpf->headroom = priv->tx_headroom; + return 0; + } + + /* Try to move the data inside the buffer just enough to align it and + * store the xdpf backpointer. If the available headroom isn't large + * enough, resort to allocating a new buffer and copying the data. + */ + aligned_data = PTR_ALIGN_DOWN(xdpf->data, DPAA_FD_DATA_ALIGNMENT); + data_shift = xdpf->data - aligned_data; + + /* The XDP frame's headroom needs to be large enough to accommodate + * shifting the data as well as storing the xdpf backpointer. + */ + if (xdpf->headroom >= data_shift + priv->tx_headroom) { + memmove(aligned_data, xdpf->data, xdpf->len); + xdpf->data = aligned_data; + xdpf->headroom = priv->tx_headroom; + return 0; + } + + /* The new xdp_frame is stored in the new buffer. Reserve enough space + * in the headroom for storing it along with the driver's private + * info. The headroom needs to be aligned to DPAA_FD_DATA_ALIGNMENT to + * guarantee the data's alignment in the buffer. + */ + headroom = ALIGN(sizeof(*new_xdpf) + priv->tx_headroom, + DPAA_FD_DATA_ALIGNMENT); + + /* Assure the extended headroom and data don't overflow the buffer, + * while maintaining the mandatory tailroom. + */ + if (headroom + xdpf->len > DPAA_BP_RAW_SIZE - + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) + return -ENOMEM; + + p = dev_alloc_pages(0); + if (unlikely(!p)) + return -ENOMEM; + + /* Copy the data to the new buffer at a properly aligned offset */ + new_buff = page_address(p); + memcpy(new_buff + headroom, xdpf->data, xdpf->len); + + /* Create an XDP frame around the new buffer in a similar fashion + * to xdp_convert_buff_to_frame. + */ + new_xdpf = new_buff; + new_xdpf->data = new_buff + headroom; + new_xdpf->len = xdpf->len; + new_xdpf->headroom = priv->tx_headroom; + new_xdpf->frame_sz = DPAA_BP_RAW_SIZE; + new_xdpf->mem_type = MEM_TYPE_PAGE_ORDER0; + + /* Release the initial buffer */ + xdp_return_frame_rx_napi(xdpf); + + *init_xdpf = new_xdpf; + return 0; +} +#endif + +static netdev_tx_t +dpaa_start_xmit(struct sk_buff *skb, struct net_device *net_dev) { const int queue_mapping = skb_get_queue_mapping(skb); - bool nonlinear = skb_is_nonlinear(skb); struct rtnl_link_stats64 *percpu_stats; struct dpaa_percpu_priv *percpu_priv; + struct netdev_queue *txq; struct dpaa_priv *priv; struct qm_fd fd; + bool nonlinear; int offset = 0; int err = 0; @@ -2013,6 +2309,13 @@ static int dpaa_start_xmit(struct sk_buff *skb, struct net_device *net_dev) qm_fd_clear_fd(&fd); + /* Packet data is always read as 32-bit words, so zero out any part of + * the skb which might be sent if we have to pad the packet + */ + if (__skb_put_padto(skb, ETH_ZLEN, false)) + goto enomem; + + nonlinear = skb_is_nonlinear(skb); if (!nonlinear) { /* We're going to store the skb backpointer at the beginning * of the data buffer, so we need a privately owned skb @@ -2029,28 +2332,50 @@ static int dpaa_start_xmit(struct sk_buff *skb, struct net_device *net_dev) /* MAX_SKB_FRAGS is equal or larger than our dpaa_SGT_MAX_ENTRIES; * make sure we don't feed FMan with more fragments than it supports. */ - if (nonlinear && - likely(skb_shinfo(skb)->nr_frags < DPAA_SGT_MAX_ENTRIES)) { - /* Just create a S/G fd based on the skb */ - err = skb_to_sg_fd(priv, skb, &fd); - percpu_priv->tx_frag_skbuffs++; - } else { + if (unlikely(nonlinear && + (skb_shinfo(skb)->nr_frags >= DPAA_SGT_MAX_ENTRIES))) { /* If the egress skb contains more fragments than we support * we have no choice but to linearize it ourselves. */ - if (unlikely(nonlinear) && __skb_linearize(skb)) + if (__skb_linearize(skb)) goto enomem; - /* Finally, create a contig FD from this skb */ + nonlinear = skb_is_nonlinear(skb); + } + +#ifdef CONFIG_DPAA_ERRATUM_A050385 + if (unlikely(fman_has_errata_a050385())) { + if (dpaa_a050385_wa_skb(net_dev, &skb)) + goto enomem; + nonlinear = skb_is_nonlinear(skb); + } +#endif + + if (nonlinear) { + /* Just create a S/G fd based on the skb */ + err = skb_to_sg_fd(priv, skb, &fd); + percpu_priv->tx_frag_skbuffs++; + } else { + /* Create a contig FD from this skb */ err = skb_to_contig_fd(priv, skb, &fd, &offset); } if (unlikely(err < 0)) goto skb_to_fd_failed; + txq = netdev_get_tx_queue(net_dev, queue_mapping); + + /* LLTX requires to do our own update of trans_start */ + txq_trans_cond_update(txq); + + if (priv->tx_tstamp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { + fd.cmd |= cpu_to_be32(FM_FD_CMD_UPD); + skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; + } + if (likely(dpaa_xmit(priv, percpu_stats, queue_mapping, &fd) == 0)) return NETDEV_TX_OK; - dpaa_cleanup_tx_fd(priv, &fd); + dpaa_cleanup_tx_fd(priv, &fd, false); skb_to_fd_failed: enomem: percpu_stats->tx_errors++; @@ -2096,7 +2421,7 @@ static void dpaa_tx_error(struct net_device *net_dev, percpu_priv->stats.tx_errors++; - skb = dpaa_cleanup_tx_fd(priv, fd); + skb = dpaa_cleanup_tx_fd(priv, fd, false); dev_kfree_skb(skb); } @@ -2104,13 +2429,18 @@ static int dpaa_eth_poll(struct napi_struct *napi, int budget) { struct dpaa_napi_portal *np = container_of(napi, struct dpaa_napi_portal, napi); + int cleaned; + + np->xdp_act = 0; + + cleaned = qman_p_poll_dqrr(np->p, budget); - int cleaned = qman_p_poll_dqrr(np->p, budget); + if (np->xdp_act & XDP_REDIRECT) + xdp_do_flush(); if (cleaned < budget) { napi_complete_done(napi, cleaned); qman_p_irqsource_add(np->p, QM_PIRQ_DQRI); - } else if (np->down) { qman_p_irqsource_add(np->p, QM_PIRQ_DQRI); } @@ -2137,15 +2467,15 @@ static void dpaa_tx_conf(struct net_device *net_dev, percpu_priv->tx_confirm++; - skb = dpaa_cleanup_tx_fd(priv, fd); + skb = dpaa_cleanup_tx_fd(priv, fd, true); consume_skb(skb); } static inline int dpaa_eth_napi_schedule(struct dpaa_percpu_priv *percpu_priv, - struct qman_portal *portal) + struct qman_portal *portal, bool sched_napi) { - if (unlikely(in_irq() || !in_serving_softirq())) { + if (sched_napi) { /* Disable QMan IRQ and invoke NAPI */ qman_p_irqsource_remove(portal, QM_PIRQ_DQRI); @@ -2159,7 +2489,8 @@ static inline int dpaa_eth_napi_schedule(struct dpaa_percpu_priv *percpu_priv, static enum qman_cb_dqrr_result rx_error_dqrr(struct qman_portal *portal, struct qman_fq *fq, - const struct qm_dqrr_entry *dq) + const struct qm_dqrr_entry *dq, + bool sched_napi) { struct dpaa_fq *dpaa_fq = container_of(fq, struct dpaa_fq, fq_base); struct dpaa_percpu_priv *percpu_priv; @@ -2175,41 +2506,208 @@ static enum qman_cb_dqrr_result rx_error_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); - if (dpaa_eth_napi_schedule(percpu_priv, portal)) + if (dpaa_eth_napi_schedule(percpu_priv, portal, sched_napi)) return qman_cb_dqrr_stop; - if (dpaa_eth_refill_bpools(priv)) - /* Unable to refill the buffer pool due to insufficient - * system memory. Just release the frame back into the pool, - * otherwise we'll soon end up with an empty buffer pool. - */ - dpaa_fd_release(net_dev, &dq->fd); - else - dpaa_rx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); + dpaa_eth_refill_bpools(priv); + dpaa_rx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); return qman_cb_dqrr_consume; } +static int dpaa_xdp_xmit_frame(struct net_device *net_dev, + struct xdp_frame *xdpf) +{ + struct dpaa_priv *priv = netdev_priv(net_dev); + struct rtnl_link_stats64 *percpu_stats; + struct dpaa_percpu_priv *percpu_priv; + struct dpaa_eth_swbp *swbp; + struct netdev_queue *txq; + void *buff_start; + struct qm_fd fd; + dma_addr_t addr; + int err; + + percpu_priv = this_cpu_ptr(priv->percpu_priv); + percpu_stats = &percpu_priv->stats; + +#ifdef CONFIG_DPAA_ERRATUM_A050385 + if (unlikely(fman_has_errata_a050385())) { + if (dpaa_a050385_wa_xdpf(priv, &xdpf)) { + err = -ENOMEM; + goto out_error; + } + } +#endif + + if (xdpf->headroom < DPAA_TX_PRIV_DATA_SIZE) { + err = -EINVAL; + goto out_error; + } + + buff_start = xdpf->data - xdpf->headroom; + + /* Leave empty the skb backpointer at the start of the buffer. + * Save the XDP frame for easy cleanup on confirmation. + */ + swbp = (struct dpaa_eth_swbp *)buff_start; + swbp->skb = NULL; + swbp->xdpf = xdpf; + + qm_fd_clear_fd(&fd); + fd.bpid = FSL_DPAA_BPID_INV; + fd.cmd |= cpu_to_be32(FM_FD_CMD_FCO); + qm_fd_set_contig(&fd, xdpf->headroom, xdpf->len); + + addr = dma_map_single(priv->tx_dma_dev, buff_start, + xdpf->headroom + xdpf->len, + DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(priv->tx_dma_dev, addr))) { + err = -EINVAL; + goto out_error; + } + + qm_fd_addr_set64(&fd, addr); + + /* Bump the trans_start */ + txq = netdev_get_tx_queue(net_dev, smp_processor_id()); + txq_trans_cond_update(txq); + + err = dpaa_xmit(priv, percpu_stats, smp_processor_id(), &fd); + if (err) { + dma_unmap_single(priv->tx_dma_dev, addr, + qm_fd_get_offset(&fd) + qm_fd_get_length(&fd), + DMA_TO_DEVICE); + goto out_error; + } + + return 0; + +out_error: + percpu_stats->tx_errors++; + return err; +} + +static u32 dpaa_run_xdp(struct dpaa_priv *priv, struct qm_fd *fd, void *vaddr, + struct dpaa_fq *dpaa_fq, unsigned int *xdp_meta_len) +{ + ssize_t fd_off = qm_fd_get_offset(fd); + struct bpf_prog *xdp_prog; + struct xdp_frame *xdpf; + struct xdp_buff xdp; + u32 xdp_act; + int err; + + xdp_prog = READ_ONCE(priv->xdp_prog); + if (!xdp_prog) + return XDP_PASS; + + xdp_init_buff(&xdp, DPAA_BP_RAW_SIZE - DPAA_TX_PRIV_DATA_SIZE, + &dpaa_fq->xdp_rxq); + xdp_prepare_buff(&xdp, vaddr + fd_off - XDP_PACKET_HEADROOM, + XDP_PACKET_HEADROOM, qm_fd_get_length(fd), true); + + /* We reserve a fixed headroom of 256 bytes under the erratum and we + * offer it all to XDP programs to use. If no room is left for the + * xdpf backpointer on TX, we will need to copy the data. + * Disable metadata support since data realignments might be required + * and the information can be lost. + */ +#ifdef CONFIG_DPAA_ERRATUM_A050385 + if (unlikely(fman_has_errata_a050385())) { + xdp_set_data_meta_invalid(&xdp); + xdp.data_hard_start = vaddr; + xdp.frame_sz = DPAA_BP_RAW_SIZE; + } +#endif + + xdp_act = bpf_prog_run_xdp(xdp_prog, &xdp); + + /* Update the length and the offset of the FD */ + qm_fd_set_contig(fd, xdp.data - vaddr, xdp.data_end - xdp.data); + + switch (xdp_act) { + case XDP_PASS: +#ifdef CONFIG_DPAA_ERRATUM_A050385 + *xdp_meta_len = xdp_data_meta_unsupported(&xdp) ? 0 : + xdp.data - xdp.data_meta; +#else + *xdp_meta_len = xdp.data - xdp.data_meta; +#endif + break; + case XDP_TX: + /* We can access the full headroom when sending the frame + * back out + */ + xdp.data_hard_start = vaddr; + xdp.frame_sz = DPAA_BP_RAW_SIZE; + xdpf = xdp_convert_buff_to_frame(&xdp); + if (unlikely(!xdpf)) { + free_pages((unsigned long)vaddr, 0); + break; + } + + if (dpaa_xdp_xmit_frame(priv->net_dev, xdpf)) + xdp_return_frame_rx_napi(xdpf); + + break; + case XDP_REDIRECT: + /* Allow redirect to use the full headroom */ + xdp.data_hard_start = vaddr; + xdp.frame_sz = DPAA_BP_RAW_SIZE; + + err = xdp_do_redirect(priv->net_dev, &xdp, xdp_prog); + if (err) { + trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act); + free_pages((unsigned long)vaddr, 0); + } + break; + default: + bpf_warn_invalid_xdp_action(priv->net_dev, xdp_prog, xdp_act); + fallthrough; + case XDP_ABORTED: + trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act); + fallthrough; + case XDP_DROP: + /* Free the buffer */ + free_pages((unsigned long)vaddr, 0); + break; + } + + return xdp_act; +} + static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal, struct qman_fq *fq, - const struct qm_dqrr_entry *dq) + const struct qm_dqrr_entry *dq, + bool sched_napi) { + bool ts_valid = false, hash_valid = false; + struct skb_shared_hwtstamps *shhwtstamps; + unsigned int skb_len, xdp_meta_len = 0; struct rtnl_link_stats64 *percpu_stats; struct dpaa_percpu_priv *percpu_priv; const struct qm_fd *fd = &dq->fd; dma_addr_t addr = qm_fd_addr(fd); + struct dpaa_napi_portal *np; enum qm_fd_format fd_format; struct net_device *net_dev; - u32 fd_status; + u32 fd_status, hash_offset; + struct qm_sg_entry *sgt; struct dpaa_bp *dpaa_bp; + struct dpaa_fq *dpaa_fq; struct dpaa_priv *priv; - unsigned int skb_len; struct sk_buff *skb; int *count_ptr; + u32 xdp_act; + void *vaddr; + u32 hash; + u64 ns; + dpaa_fq = container_of(fq, struct dpaa_fq, fq_base); fd_status = be32_to_cpu(fd->status); fd_format = qm_fd_get_format(fd); - net_dev = ((struct dpaa_fq *)fq)->net_dev; + net_dev = dpaa_fq->net_dev; priv = netdev_priv(net_dev); dpaa_bp = dpaa_bpid2pool(dq->fd.bpid); if (!dpaa_bp) @@ -2220,8 +2718,9 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); percpu_stats = &percpu_priv->stats; + np = &percpu_priv->np; - if (unlikely(dpaa_eth_napi_schedule(percpu_priv, portal))) + if (unlikely(dpaa_eth_napi_schedule(percpu_priv, portal, sched_napi))) return qman_cb_dqrr_stop; /* Make sure we didn't run out of buffers */ @@ -2244,16 +2743,13 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal, return qman_cb_dqrr_consume; } - dpaa_bp = dpaa_bpid2pool(fd->bpid); - if (!dpaa_bp) - return qman_cb_dqrr_consume; - - dma_unmap_single(dpaa_bp->dev, addr, dpaa_bp->size, DMA_FROM_DEVICE); + dma_unmap_page(dpaa_bp->priv->rx_dma_dev, addr, DPAA_BP_RAW_SIZE, + DMA_FROM_DEVICE); /* prefetch the first 64 bytes of the frame or the SGT start */ - prefetch(phys_to_virt(addr) + qm_fd_get_offset(fd)); + vaddr = phys_to_virt(addr); + prefetch(vaddr + qm_fd_get_offset(fd)); - fd_format = qm_fd_get_format(fd); /* The only FD types that we may receive are contig and S/G */ WARN_ON((fd_format != qm_fd_contig) && (fd_format != qm_fd_sg)); @@ -2263,19 +2759,76 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal, count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); (*count_ptr)--; - if (likely(fd_format == qm_fd_contig)) + /* Extract the timestamp stored in the headroom before running XDP */ + if (priv->rx_tstamp) { + if (!fman_port_get_tstamp(priv->mac_dev->port[RX], vaddr, &ns)) + ts_valid = true; + else + WARN_ONCE(1, "fman_port_get_tstamp failed!\n"); + } + + /* Extract the hash stored in the headroom before running XDP */ + if (net_dev->features & NETIF_F_RXHASH && priv->keygen_in_use && + !fman_port_get_hash_result_offset(priv->mac_dev->port[RX], + &hash_offset)) { + hash = be32_to_cpu(*(__be32 *)(vaddr + hash_offset)); + hash_valid = true; + } + + if (likely(fd_format == qm_fd_contig)) { + xdp_act = dpaa_run_xdp(priv, (struct qm_fd *)fd, vaddr, + dpaa_fq, &xdp_meta_len); + np->xdp_act |= xdp_act; + if (xdp_act != XDP_PASS) { + percpu_stats->rx_packets++; + percpu_stats->rx_bytes += qm_fd_get_length(fd); + return qman_cb_dqrr_consume; + } skb = contig_fd_to_skb(priv, fd); - else + } else { + /* XDP doesn't support S/G frames. Return the fragments to the + * buffer pool and release the SGT. + */ + if (READ_ONCE(priv->xdp_prog)) { + WARN_ONCE(1, "S/G frames not supported under XDP\n"); + sgt = vaddr + qm_fd_get_offset(fd); + dpaa_release_sgt_members(sgt); + free_pages((unsigned long)vaddr, 0); + return qman_cb_dqrr_consume; + } skb = sg_fd_to_skb(priv, fd); + } if (!skb) return qman_cb_dqrr_consume; + if (xdp_meta_len) + skb_metadata_set(skb, xdp_meta_len); + + /* Set the previously extracted timestamp */ + if (ts_valid) { + shhwtstamps = skb_hwtstamps(skb); + memset(shhwtstamps, 0, sizeof(*shhwtstamps)); + shhwtstamps->hwtstamp = ns_to_ktime(ns); + } + skb->protocol = eth_type_trans(skb, net_dev); + /* Set the previously extracted hash */ + if (hash_valid) { + enum pkt_hash_types type; + + /* if L4 exists, it was used in the hash generation */ + type = be32_to_cpu(fd->status) & FM_FD_STAT_L4CV ? + PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3; + skb_set_hash(skb, hash, type); + } + skb_len = skb->len; - if (unlikely(netif_receive_skb(skb) == NET_RX_DROP)) + if (unlikely(netif_receive_skb(skb) == NET_RX_DROP)) { + percpu_stats->rx_dropped++; return qman_cb_dqrr_consume; + } percpu_stats->rx_packets++; percpu_stats->rx_bytes += skb_len; @@ -2285,7 +2838,8 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal, static enum qman_cb_dqrr_result conf_error_dqrr(struct qman_portal *portal, struct qman_fq *fq, - const struct qm_dqrr_entry *dq) + const struct qm_dqrr_entry *dq, + bool sched_napi) { struct dpaa_percpu_priv *percpu_priv; struct net_device *net_dev; @@ -2296,7 +2850,7 @@ static enum qman_cb_dqrr_result conf_error_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); - if (dpaa_eth_napi_schedule(percpu_priv, portal)) + if (dpaa_eth_napi_schedule(percpu_priv, portal, sched_napi)) return qman_cb_dqrr_stop; dpaa_tx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); @@ -2306,7 +2860,8 @@ static enum qman_cb_dqrr_result conf_error_dqrr(struct qman_portal *portal, static enum qman_cb_dqrr_result conf_dflt_dqrr(struct qman_portal *portal, struct qman_fq *fq, - const struct qm_dqrr_entry *dq) + const struct qm_dqrr_entry *dq, + bool sched_napi) { struct dpaa_percpu_priv *percpu_priv; struct net_device *net_dev; @@ -2320,7 +2875,7 @@ static enum qman_cb_dqrr_result conf_dflt_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); - if (dpaa_eth_napi_schedule(percpu_priv, portal)) + if (dpaa_eth_napi_schedule(percpu_priv, portal, sched_napi)) return qman_cb_dqrr_stop; dpaa_tx_conf(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); @@ -2346,7 +2901,7 @@ static void egress_ern(struct qman_portal *portal, percpu_priv->stats.tx_fifo_errors++; count_ern(percpu_priv, msg); - skb = dpaa_cleanup_tx_fd(priv, fd); + skb = dpaa_cleanup_tx_fd(priv, fd, false); dev_kfree_skb_any(skb); } @@ -2363,10 +2918,10 @@ static void dpaa_eth_napi_enable(struct dpaa_priv *priv) struct dpaa_percpu_priv *percpu_priv; int i; - for_each_possible_cpu(i) { + for_each_online_cpu(i) { percpu_priv = per_cpu_ptr(priv->percpu_priv, i); - percpu_priv->np.down = 0; + percpu_priv->np.down = false; napi_enable(&percpu_priv->np.napi); } } @@ -2376,10 +2931,10 @@ static void dpaa_eth_napi_disable(struct dpaa_priv *priv) struct dpaa_percpu_priv *percpu_priv; int i; - for_each_possible_cpu(i) { + for_each_online_cpu(i) { percpu_priv = per_cpu_ptr(priv->percpu_priv, i); - percpu_priv->np.down = 1; + percpu_priv->np.down = true; napi_disable(&percpu_priv->np.napi); } } @@ -2394,12 +2949,10 @@ static int dpaa_open(struct net_device *net_dev) mac_dev = priv->mac_dev; dpaa_eth_napi_enable(priv); - net_dev->phydev = mac_dev->init_phy(net_dev, priv->mac_dev); - if (!net_dev->phydev) { - netif_err(priv, ifup, net_dev, "init_phy() failed\n"); - err = -ENODEV; + err = phylink_of_phy_connect(mac_dev->phylink, + mac_dev->dev->of_node, 0); + if (err) goto phy_init_failed; - } for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { err = fman_port_enable(mac_dev->port[i]); @@ -2407,11 +2960,12 @@ static int dpaa_open(struct net_device *net_dev) goto mac_start_failed; } - err = priv->mac_dev->start(mac_dev); + err = priv->mac_dev->enable(mac_dev->fman_mac); if (err < 0) { - netif_err(priv, ifup, net_dev, "mac_dev->start() = %d\n", err); + netif_err(priv, ifup, net_dev, "mac_dev->enable() = %d\n", err); goto mac_start_failed; } + phylink_start(mac_dev->phylink); netif_tx_start_all_queues(net_dev); @@ -2420,6 +2974,7 @@ static int dpaa_open(struct net_device *net_dev) mac_start_failed: for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) fman_port_disable(mac_dev->port[i]); + phylink_disconnect_phy(mac_dev->phylink); phy_init_failed: dpaa_eth_napi_disable(priv); @@ -2440,11 +2995,152 @@ static int dpaa_eth_stop(struct net_device *net_dev) return err; } -static int dpaa_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd) +static bool xdp_validate_mtu(struct dpaa_priv *priv, int mtu) +{ + int max_contig_data = priv->dpaa_bp->size - priv->rx_headroom; + + /* We do not support S/G fragments when XDP is enabled. + * Limit the MTU in relation to the buffer size. + */ + if (mtu + VLAN_ETH_HLEN + ETH_FCS_LEN > max_contig_data) { + dev_warn(priv->net_dev->dev.parent, + "The maximum MTU for XDP is %d\n", + max_contig_data - VLAN_ETH_HLEN - ETH_FCS_LEN); + return false; + } + + return true; +} + +static int dpaa_change_mtu(struct net_device *net_dev, int new_mtu) +{ + struct dpaa_priv *priv = netdev_priv(net_dev); + + if (priv->xdp_prog && !xdp_validate_mtu(priv, new_mtu)) + return -EINVAL; + + WRITE_ONCE(net_dev->mtu, new_mtu); + return 0; +} + +static int dpaa_setup_xdp(struct net_device *net_dev, struct netdev_bpf *bpf) +{ + struct dpaa_priv *priv = netdev_priv(net_dev); + struct bpf_prog *old_prog; + int err; + bool up; + + /* S/G fragments are not supported in XDP-mode */ + if (bpf->prog && !xdp_validate_mtu(priv, net_dev->mtu)) { + NL_SET_ERR_MSG_MOD(bpf->extack, "MTU too large for XDP"); + return -EINVAL; + } + + up = netif_running(net_dev); + + if (up) + dpaa_eth_stop(net_dev); + + old_prog = xchg(&priv->xdp_prog, bpf->prog); + if (old_prog) + bpf_prog_put(old_prog); + + if (up) { + err = dpaa_open(net_dev); + if (err) { + NL_SET_ERR_MSG_MOD(bpf->extack, "dpaa_open() failed"); + return err; + } + } + + return 0; +} + +static int dpaa_xdp(struct net_device *net_dev, struct netdev_bpf *xdp) { - if (!net_dev->phydev) + switch (xdp->command) { + case XDP_SETUP_PROG: + return dpaa_setup_xdp(net_dev, xdp); + default: return -EINVAL; - return phy_mii_ioctl(net_dev->phydev, rq, cmd); + } +} + +static int dpaa_xdp_xmit(struct net_device *net_dev, int n, + struct xdp_frame **frames, u32 flags) +{ + struct xdp_frame *xdpf; + int i, nxmit = 0; + + if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) + return -EINVAL; + + if (!netif_running(net_dev)) + return -ENETDOWN; + + for (i = 0; i < n; i++) { + xdpf = frames[i]; + if (dpaa_xdp_xmit_frame(net_dev, xdpf)) + break; + nxmit++; + } + + return nxmit; +} + +static int dpaa_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *config) +{ + struct dpaa_priv *priv = netdev_priv(dev); + + config->tx_type = priv->tx_tstamp ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; + config->rx_filter = priv->rx_tstamp ? HWTSTAMP_FILTER_ALL : + HWTSTAMP_FILTER_NONE; + + return 0; +} + +static int dpaa_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack) +{ + struct dpaa_priv *priv = netdev_priv(dev); + + switch (config->tx_type) { + case HWTSTAMP_TX_OFF: + /* Couldn't disable rx/tx timestamping separately. + * Do nothing here. + */ + priv->tx_tstamp = false; + break; + case HWTSTAMP_TX_ON: + priv->mac_dev->set_tstamp(priv->mac_dev->fman_mac, true); + priv->tx_tstamp = true; + break; + default: + return -ERANGE; + } + + if (config->rx_filter == HWTSTAMP_FILTER_NONE) { + /* Couldn't disable rx/tx timestamping separately. + * Do nothing here. + */ + priv->rx_tstamp = false; + } else { + priv->mac_dev->set_tstamp(priv->mac_dev->fman_mac, true); + priv->rx_tstamp = true; + /* TS is set for all frame types, not only those requested */ + config->rx_filter = HWTSTAMP_FILTER_ALL; + } + + return 0; +} + +static int dpaa_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd) +{ + struct dpaa_priv *priv = netdev_priv(net_dev); + + return phylink_mii_ioctl(priv->mac_dev->phylink, rq, cmd); } static const struct net_device_ops dpaa_ops = { @@ -2456,8 +3152,13 @@ static const struct net_device_ops dpaa_ops = { .ndo_set_mac_address = dpaa_set_mac_address, .ndo_validate_addr = eth_validate_addr, .ndo_set_rx_mode = dpaa_set_rx_mode, - .ndo_do_ioctl = dpaa_ioctl, + .ndo_eth_ioctl = dpaa_ioctl, .ndo_setup_tc = dpaa_setup_tc, + .ndo_change_mtu = dpaa_change_mtu, + .ndo_bpf = dpaa_xdp, + .ndo_xdp_xmit = dpaa_xdp_xmit, + .ndo_hwtstamp_get = dpaa_hwtstamp_get, + .ndo_hwtstamp_set = dpaa_hwtstamp_set, }; static int dpaa_napi_add(struct net_device *net_dev) @@ -2469,8 +3170,7 @@ static int dpaa_napi_add(struct net_device *net_dev) for_each_possible_cpu(cpu) { percpu_priv = per_cpu_ptr(priv->percpu_priv, cpu); - netif_napi_add(net_dev, &percpu_priv->np.napi, - dpaa_eth_poll, NAPI_POLL_WEIGHT); + netif_napi_add(net_dev, &percpu_priv->np.napi, dpaa_eth_poll); } return 0; @@ -2485,8 +3185,9 @@ static void dpaa_napi_del(struct net_device *net_dev) for_each_possible_cpu(cpu) { percpu_priv = per_cpu_ptr(priv->percpu_priv, cpu); - netif_napi_del(&percpu_priv->np.napi); + __netif_napi_del(&percpu_priv->np.napi); } + synchronize_net(); } static inline void dpaa_bp_free_pf(const struct dpaa_bp *bp, @@ -2494,7 +3195,8 @@ static inline void dpaa_bp_free_pf(const struct dpaa_bp *bp, { dma_addr_t addr = bm_buf_addr(bmb); - dma_unmap_single(bp->dev, addr, bp->size, DMA_FROM_DEVICE); + dma_unmap_page(bp->priv->rx_dma_dev, addr, DPAA_BP_RAW_SIZE, + DMA_FROM_DEVICE); skb_free_frag(phys_to_virt(addr)); } @@ -2510,6 +3212,9 @@ static struct dpaa_bp *dpaa_bp_alloc(struct device *dev) dpaa_bp->bpid = FSL_DPAA_BPID_INV; dpaa_bp->percpu_count = devm_alloc_percpu(dev, *dpaa_bp->percpu_count); + if (!dpaa_bp->percpu_count) + return ERR_PTR(-ENOMEM); + dpaa_bp->config_count = FSL_DPAA_ETH_MAX_BUF_COUNT; dpaa_bp->seed_cb = dpaa_bp_seed; @@ -2568,9 +3273,8 @@ out_error: return err; } -static const struct of_device_id dpaa_match[]; - -static inline u16 dpaa_get_headroom(struct dpaa_buffer_layout *bl) +static u16 dpaa_get_headroom(struct dpaa_buffer_layout *bl, + enum port_type port) { u16 headroom; @@ -2584,39 +3288,75 @@ static inline u16 dpaa_get_headroom(struct dpaa_buffer_layout *bl) * * Also make sure the headroom is a multiple of data_align bytes */ - headroom = (u16)(bl->priv_data_size + DPAA_PARSE_RESULTS_SIZE + - DPAA_TIME_STAMP_SIZE + DPAA_HASH_RESULTS_SIZE); + headroom = (u16)(bl[port].priv_data_size + DPAA_HWA_SIZE); - return DPAA_FD_DATA_ALIGNMENT ? ALIGN(headroom, - DPAA_FD_DATA_ALIGNMENT) : - headroom; + if (port == RX) { +#ifdef CONFIG_DPAA_ERRATUM_A050385 + if (unlikely(fman_has_errata_a050385())) + headroom = XDP_PACKET_HEADROOM; +#endif + + return ALIGN(headroom, DPAA_FD_RX_DATA_ALIGNMENT); + } else { + return ALIGN(headroom, DPAA_FD_DATA_ALIGNMENT); + } } static int dpaa_eth_probe(struct platform_device *pdev) { - struct dpaa_bp *dpaa_bps[DPAA_BPS_NUM] = {NULL}; - struct dpaa_percpu_priv *percpu_priv; struct net_device *net_dev = NULL; + struct dpaa_bp *dpaa_bp = NULL; struct dpaa_fq *dpaa_fq, *tmp; struct dpaa_priv *priv = NULL; struct fm_port_fqs port_fqs; struct mac_device *mac_dev; - int err = 0, i, channel; + int err = 0, channel; struct device *dev; dev = &pdev->dev; + err = bman_is_probed(); + if (!err) + return -EPROBE_DEFER; + if (err < 0) { + dev_err(dev, "failing probe due to bman probe error\n"); + return -ENODEV; + } + err = qman_is_probed(); + if (!err) + return -EPROBE_DEFER; + if (err < 0) { + dev_err(dev, "failing probe due to qman probe error\n"); + return -ENODEV; + } + err = bman_portals_probed(); + if (!err) + return -EPROBE_DEFER; + if (err < 0) { + dev_err(dev, + "failing probe due to bman portals probe error\n"); + return -ENODEV; + } + err = qman_portals_probed(); + if (!err) + return -EPROBE_DEFER; + if (err < 0) { + dev_err(dev, + "failing probe due to qman portals probe error\n"); + return -ENODEV; + } + /* Allocate this early, so we can store relevant information in * the private area */ - net_dev = alloc_etherdev_mq(sizeof(*priv), DPAA_ETH_TXQ_NUM); + net_dev = alloc_etherdev_mq(sizeof(*priv), dpaa_max_num_txqs()); if (!net_dev) { dev_err(dev, "alloc_etherdev_mq() failed\n"); - goto alloc_etherdev_mq_failed; + return -ENOMEM; } /* Do this here, so we can be verbose early */ - SET_NETDEV_DEV(net_dev, dev); + SET_NETDEV_DEV(net_dev, dev->parent); dev_set_drvdata(dev, net_dev); priv = netdev_priv(net_dev); @@ -2624,11 +3364,39 @@ static int dpaa_eth_probe(struct platform_device *pdev) priv->msg_enable = netif_msg_init(debug, DPAA_MSG_DEFAULT); + priv->egress_fqs = devm_kcalloc(dev, dpaa_max_num_txqs(), + sizeof(*priv->egress_fqs), + GFP_KERNEL); + if (!priv->egress_fqs) { + err = -ENOMEM; + goto free_netdev; + } + + priv->conf_fqs = devm_kcalloc(dev, dpaa_max_num_txqs(), + sizeof(*priv->conf_fqs), + GFP_KERNEL); + if (!priv->conf_fqs) { + err = -ENOMEM; + goto free_netdev; + } + mac_dev = dpaa_mac_dev_get(pdev); if (IS_ERR(mac_dev)) { - dev_err(dev, "dpaa_mac_dev_get() failed\n"); + netdev_err(net_dev, "dpaa_mac_dev_get() failed\n"); err = PTR_ERR(mac_dev); - goto mac_probe_failed; + goto free_netdev; + } + + /* Devices used for DMA mapping */ + priv->rx_dma_dev = fman_port_get_device(mac_dev->port[RX]); + priv->tx_dma_dev = fman_port_get_device(mac_dev->port[TX]); + err = dma_coerce_mask_and_coherent(priv->rx_dma_dev, DMA_BIT_MASK(40)); + if (!err) + err = dma_coerce_mask_and_coherent(priv->tx_dma_dev, + DMA_BIT_MASK(40)); + if (err) { + netdev_err(net_dev, "dma_coerce_mask_and_coherent() failed\n"); + goto free_netdev; } /* If fsl_fm_max_frm is set to a higher value than the all-common 1500, @@ -2646,35 +3414,22 @@ static int dpaa_eth_probe(struct platform_device *pdev) priv->buf_layout[RX].priv_data_size = DPAA_RX_PRIV_DATA_SIZE; /* Rx */ priv->buf_layout[TX].priv_data_size = DPAA_TX_PRIV_DATA_SIZE; /* Tx */ - /* device used for DMA mapping */ - set_dma_ops(dev, get_dma_ops(&pdev->dev)); - err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(40)); - if (err) { - dev_err(dev, "dma_coerce_mask_and_coherent() failed\n"); - goto dev_mask_failed; - } - /* bp init */ - for (i = 0; i < DPAA_BPS_NUM; i++) { - int err; - - dpaa_bps[i] = dpaa_bp_alloc(dev); - if (IS_ERR(dpaa_bps[i])) - return PTR_ERR(dpaa_bps[i]); - /* the raw size of the buffers used for reception */ - dpaa_bps[i]->raw_size = bpool_buffer_raw_size(i, DPAA_BPS_NUM); - /* avoid runtime computations by keeping the usable size here */ - dpaa_bps[i]->size = dpaa_bp_size(dpaa_bps[i]->raw_size); - dpaa_bps[i]->dev = dev; - - err = dpaa_bp_alloc_pool(dpaa_bps[i]); - if (err < 0) { - dpaa_bps_free(priv); - priv->dpaa_bps[i] = NULL; - goto bp_create_failed; - } - priv->dpaa_bps[i] = dpaa_bps[i]; - } + dpaa_bp = dpaa_bp_alloc(dev); + if (IS_ERR(dpaa_bp)) { + err = PTR_ERR(dpaa_bp); + goto free_dpaa_bps; + } + /* the raw size of the buffers used for reception */ + dpaa_bp->raw_size = DPAA_BP_RAW_SIZE; + /* avoid runtime computations by keeping the usable size here */ + dpaa_bp->size = dpaa_bp_size(dpaa_bp->raw_size); + dpaa_bp->priv = priv; + + err = dpaa_bp_alloc_pool(dpaa_bp); + if (err < 0) + goto free_dpaa_bps; + priv->dpaa_bp = dpaa_bp; INIT_LIST_HEAD(&priv->dpaa_fq_list); @@ -2683,7 +3438,7 @@ static int dpaa_eth_probe(struct platform_device *pdev) err = dpaa_alloc_all_fqs(dev, &priv->dpaa_fq_list, &port_fqs); if (err < 0) { dev_err(dev, "dpaa_alloc_all_fqs() failed\n"); - goto fq_probe_failed; + goto free_dpaa_bps; } priv->mac_dev = mac_dev; @@ -2692,17 +3447,19 @@ static int dpaa_eth_probe(struct platform_device *pdev) if (channel < 0) { dev_err(dev, "dpaa_get_channel() failed\n"); err = channel; - goto get_channel_failed; + goto free_dpaa_bps; } priv->channel = (u16)channel; - /* Start a thread that will walk the CPUs with affine portals + /* Walk the CPUs with affine portals * and add this pool channel to each's dequeue mask. */ - dpaa_eth_add_channel(priv->channel); + dpaa_eth_add_channel(priv->channel, &pdev->dev); - dpaa_fq_setup(priv, &dpaa_fq_cbs, priv->mac_dev->port[TX]); + err = dpaa_fq_setup(priv, &dpaa_fq_cbs, priv->mac_dev->port[TX]); + if (err) + goto free_dpaa_bps; /* Create a congestion group for this netdev, with * dynamically-allocated CGR ID. @@ -2712,53 +3469,53 @@ static int dpaa_eth_probe(struct platform_device *pdev) err = dpaa_eth_cgr_init(priv); if (err < 0) { dev_err(dev, "Error initializing CGR\n"); - goto tx_cgr_init_failed; + goto free_dpaa_bps; } err = dpaa_ingress_cgr_init(priv); if (err < 0) { dev_err(dev, "Error initializing ingress CGR\n"); - goto rx_cgr_init_failed; + goto delete_egress_cgr; } /* Add the FQs to the interface, and make them active */ list_for_each_entry_safe(dpaa_fq, tmp, &priv->dpaa_fq_list, list) { err = dpaa_fq_init(dpaa_fq, false); if (err < 0) - goto fq_alloc_failed; + goto free_dpaa_fqs; } - priv->tx_headroom = dpaa_get_headroom(&priv->buf_layout[TX]); - priv->rx_headroom = dpaa_get_headroom(&priv->buf_layout[RX]); + priv->tx_headroom = dpaa_get_headroom(priv->buf_layout, TX); + priv->rx_headroom = dpaa_get_headroom(priv->buf_layout, RX); /* All real interfaces need their ports initialized */ - err = dpaa_eth_init_ports(mac_dev, dpaa_bps, DPAA_BPS_NUM, &port_fqs, + err = dpaa_eth_init_ports(mac_dev, dpaa_bp, &port_fqs, &priv->buf_layout[0], dev); if (err) - goto init_ports_failed; + goto free_dpaa_fqs; + + /* Rx traffic distribution based on keygen hashing defaults to on */ + priv->keygen_in_use = true; priv->percpu_priv = devm_alloc_percpu(dev, *priv->percpu_priv); if (!priv->percpu_priv) { dev_err(dev, "devm_alloc_percpu() failed\n"); err = -ENOMEM; - goto alloc_percpu_failed; - } - for_each_possible_cpu(i) { - percpu_priv = per_cpu_ptr(priv->percpu_priv, i); - memset(percpu_priv, 0, sizeof(*percpu_priv)); + goto free_dpaa_fqs; } priv->num_tc = 1; - netif_set_real_num_tx_queues(net_dev, priv->num_tc * DPAA_TC_TXQ_NUM); + netif_set_real_num_tx_queues(net_dev, + priv->num_tc * dpaa_num_txqs_per_tc()); /* Initialize NAPI */ err = dpaa_napi_add(net_dev); if (err < 0) - goto napi_add_failed; + goto delete_dpaa_napi; err = dpaa_netdev_init(net_dev, &dpaa_ops, tx_timeout); if (err < 0) - goto netdev_init_failed; + goto delete_dpaa_napi; dpaa_eth_sysfs_init(&net_dev->dev); @@ -2767,36 +3524,25 @@ static int dpaa_eth_probe(struct platform_device *pdev) return 0; -netdev_init_failed: -napi_add_failed: +delete_dpaa_napi: dpaa_napi_del(net_dev); -alloc_percpu_failed: -init_ports_failed: +free_dpaa_fqs: dpaa_fq_free(dev, &priv->dpaa_fq_list); -fq_alloc_failed: qman_delete_cgr_safe(&priv->ingress_cgr); qman_release_cgrid(priv->ingress_cgr.cgrid); -rx_cgr_init_failed: +delete_egress_cgr: qman_delete_cgr_safe(&priv->cgr_data.cgr); qman_release_cgrid(priv->cgr_data.cgr.cgrid); -tx_cgr_init_failed: -get_channel_failed: +free_dpaa_bps: dpaa_bps_free(priv); -bp_create_failed: -fq_probe_failed: -dev_mask_failed: -mac_probe_failed: +free_netdev: dev_set_drvdata(dev, NULL); free_netdev(net_dev); -alloc_etherdev_mq_failed: - for (i = 0; i < DPAA_BPS_NUM && dpaa_bps[i]; i++) { - if (atomic_read(&dpaa_bps[i]->refs) == 0) - devm_kfree(dev, dpaa_bps[i]); - } + return err; } -static int dpaa_remove(struct platform_device *pdev) +static void dpaa_remove(struct platform_device *pdev) { struct net_device *net_dev; struct dpaa_priv *priv; @@ -2812,8 +3558,12 @@ static int dpaa_remove(struct platform_device *pdev) dev_set_drvdata(dev, NULL); unregister_netdev(net_dev); + phylink_destroy(priv->mac_dev->phylink); err = dpaa_fq_free(dev, &priv->dpaa_fq_list); + if (err) + dev_err(dev, "Failed to free FQs on remove (%pE)\n", + ERR_PTR(err)); qman_delete_cgr_safe(&priv->ingress_cgr); qman_release_cgrid(priv->ingress_cgr.cgrid); @@ -2825,11 +3575,9 @@ static int dpaa_remove(struct platform_device *pdev) dpaa_bps_free(priv); free_netdev(net_dev); - - return err; } -static struct platform_device_id dpaa_devtype[] = { +static const struct platform_device_id dpaa_devtype[] = { { .name = "dpaa-ethernet", .driver_data = 0, |