diff options
| author | Felix Fietkau <nbd@nbd.name> | 2016-05-21 22:16:56 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2016-05-22 16:04:37 +0200 |
| commit | df98acc6a1252456608958fc17f7da3ae4cfb46c (patch) | |
| tree | 2ed792928e0aa18d5dc3a8031b670629fa175167 | |
| parent | e90245237c971cda70e9c1752e9bce4cc3cbef4f (diff) | |
| download | upstream-df98acc6a1252456608958fc17f7da3ae4cfb46c.tar.gz upstream-df98acc6a1252456608958fc17f7da3ae4cfb46c.tar.bz2 upstream-df98acc6a1252456608958fc17f7da3ae4cfb46c.zip | |
mvebu: backport upstream ethernet driver improvements and enable buffer manager support
Signed-off-by: Felix Fietkau <nbd@nbd.name>
29 files changed, 4334 insertions, 6 deletions
diff --git a/target/linux/mvebu/config-4.4 b/target/linux/mvebu/config-4.4 index 163af67347..f5b2346e44 100644 --- a/target/linux/mvebu/config-4.4 +++ b/target/linux/mvebu/config-4.4 @@ -209,6 +209,7 @@ CONFIG_HAVE_UID16=y CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y CONFIG_HIGHMEM=y # CONFIG_HIGHPTE is not set +CONFIG_HWBM=y CONFIG_HWMON=y CONFIG_HZ_FIXED=0 CONFIG_HZ_PERIODIC=y @@ -274,6 +275,7 @@ CONFIG_MVEBU_DEVBUS=y CONFIG_MVEBU_MBUS=y CONFIG_MVMDIO=y CONFIG_MVNETA=y +CONFIG_MVNETA_BM=y CONFIG_MVSW61XX_PHY=y CONFIG_MV_XOR=y CONFIG_NEED_DMA_MAP_STATE=y diff --git a/target/linux/mvebu/patches-4.4/021-mtd-pxa3xx_nand-Increase-the-initial-chunk-size.patch b/target/linux/mvebu/patches-4.4/021-mtd-pxa3xx_nand-Increase-the-initial-chunk-size.patch index f928f46cc6..0b0e047c02 100644 --- a/target/linux/mvebu/patches-4.4/021-mtd-pxa3xx_nand-Increase-the-initial-chunk-size.patch +++ b/target/linux/mvebu/patches-4.4/021-mtd-pxa3xx_nand-Increase-the-initial-chunk-size.patch @@ -31,7 +31,7 @@ Signed-off-by: Brian Norris <computersforpeace@gmail.com> --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c -@@ -1636,7 +1636,7 @@ static int pxa3xx_nand_scan(struct mtd_i +@@ -1637,7 +1637,7 @@ static int pxa3xx_nand_scan(struct mtd_i goto KEEP_CONFIG; /* Set a default chunk size */ diff --git a/target/linux/mvebu/patches-4.4/022-mtd-pxa3xx_nand-Fix-initial-controller-configuration.patch b/target/linux/mvebu/patches-4.4/022-mtd-pxa3xx_nand-Fix-initial-controller-configuration.patch index 260e7dc1bc..7d07fb9423 100644 --- a/target/linux/mvebu/patches-4.4/022-mtd-pxa3xx_nand-Fix-initial-controller-configuration.patch +++ b/target/linux/mvebu/patches-4.4/022-mtd-pxa3xx_nand-Fix-initial-controller-configuration.patch @@ -19,7 +19,7 @@ Signed-off-by: Brian Norris <computersforpeace@gmail.com> --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c -@@ -1419,34 +1419,43 @@ static int pxa3xx_nand_waitfunc(struct m +@@ -1420,34 +1420,43 @@ static int pxa3xx_nand_waitfunc(struct m return NAND_STATUS_READY; } @@ -71,7 +71,7 @@ Signed-off-by: Brian Norris <computersforpeace@gmail.com> info->ndtr0cs0 = nand_readl(info, NDTR0CS0); info->ndtr1cs0 = nand_readl(info, NDTR1CS0); return 0; -@@ -1635,10 +1644,7 @@ static int pxa3xx_nand_scan(struct mtd_i +@@ -1636,10 +1645,7 @@ static int pxa3xx_nand_scan(struct mtd_i if (pdata->keep_config && !pxa3xx_nand_detect_config(info)) goto KEEP_CONFIG; @@ -83,7 +83,7 @@ Signed-off-by: Brian Norris <computersforpeace@gmail.com> if (ret) return ret; -@@ -1651,7 +1657,6 @@ static int pxa3xx_nand_scan(struct mtd_i +@@ -1652,7 +1658,6 @@ static int pxa3xx_nand_scan(struct mtd_i } KEEP_CONFIG: @@ -91,7 +91,7 @@ Signed-off-by: Brian Norris <computersforpeace@gmail.com> if (info->reg_ndcr & NDCR_DWIDTH_M) chip->options |= NAND_BUSWIDTH_16; -@@ -1736,6 +1741,10 @@ KEEP_CONFIG: +@@ -1737,6 +1742,10 @@ KEEP_CONFIG: host->row_addr_cycles = 3; else host->row_addr_cycles = 2; diff --git a/target/linux/mvebu/patches-4.4/023-bus-mvebu-mbus-provide-api-for-obtaining-IO-and-DRAM.patch b/target/linux/mvebu/patches-4.4/023-bus-mvebu-mbus-provide-api-for-obtaining-IO-and-DRAM.patch new file mode 100644 index 0000000000..58687f36ad --- /dev/null +++ b/target/linux/mvebu/patches-4.4/023-bus-mvebu-mbus-provide-api-for-obtaining-IO-and-DRAM.patch @@ -0,0 +1,94 @@ +From: Marcin Wojtas <mw@semihalf.com> +Date: Mon, 14 Mar 2016 09:39:02 +0100 +Subject: [PATCH] bus: mvebu-mbus: provide api for obtaining IO and DRAM window + information + +This commit enables finding appropriate mbus window and obtaining its +target id and attribute for given physical address in two separate +routines, both for IO and DRAM windows. This functionality +is needed for Armada XP/38x Network Controller's Buffer Manager and +PnC configuration. + +[gregory.clement@free-electrons.com: Fix size test for +mvebu_mbus_get_dram_win_info] + +Signed-off-by: Marcin Wojtas <mw@semihalf.com> +[DRAM window information reference in LKv3.10] +Signed-off-by: Evan Wang <xswang@marvell.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/bus/mvebu-mbus.c ++++ b/drivers/bus/mvebu-mbus.c +@@ -948,6 +948,58 @@ void mvebu_mbus_get_pcie_io_aperture(str + *res = mbus_state.pcie_io_aperture; + } + ++int mvebu_mbus_get_dram_win_info(phys_addr_t phyaddr, u8 *target, u8 *attr) ++{ ++ const struct mbus_dram_target_info *dram; ++ int i; ++ ++ /* Get dram info */ ++ dram = mv_mbus_dram_info(); ++ if (!dram) { ++ pr_err("missing DRAM information\n"); ++ return -ENODEV; ++ } ++ ++ /* Try to find matching DRAM window for phyaddr */ ++ for (i = 0; i < dram->num_cs; i++) { ++ const struct mbus_dram_window *cs = dram->cs + i; ++ ++ if (cs->base <= phyaddr && ++ phyaddr <= (cs->base + cs->size - 1)) { ++ *target = dram->mbus_dram_target_id; ++ *attr = cs->mbus_attr; ++ return 0; ++ } ++ } ++ ++ pr_err("invalid dram address 0x%x\n", phyaddr); ++ return -EINVAL; ++} ++EXPORT_SYMBOL_GPL(mvebu_mbus_get_dram_win_info); ++ ++int mvebu_mbus_get_io_win_info(phys_addr_t phyaddr, u32 *size, u8 *target, ++ u8 *attr) ++{ ++ int win; ++ ++ for (win = 0; win < mbus_state.soc->num_wins; win++) { ++ u64 wbase; ++ int enabled; ++ ++ mvebu_mbus_read_window(&mbus_state, win, &enabled, &wbase, ++ size, target, attr, NULL); ++ ++ if (!enabled) ++ continue; ++ ++ if (wbase <= phyaddr && phyaddr <= wbase + *size) ++ return win; ++ } ++ ++ return -EINVAL; ++} ++EXPORT_SYMBOL_GPL(mvebu_mbus_get_io_win_info); ++ + static __init int mvebu_mbus_debugfs_init(void) + { + struct mvebu_mbus_state *s = &mbus_state; +--- a/include/linux/mbus.h ++++ b/include/linux/mbus.h +@@ -69,6 +69,9 @@ static inline const struct mbus_dram_tar + int mvebu_mbus_save_cpu_target(u32 *store_addr); + void mvebu_mbus_get_pcie_mem_aperture(struct resource *res); + void mvebu_mbus_get_pcie_io_aperture(struct resource *res); ++int mvebu_mbus_get_dram_win_info(phys_addr_t phyaddr, u8 *target, u8 *attr); ++int mvebu_mbus_get_io_win_info(phys_addr_t phyaddr, u32 *size, u8 *target, ++ u8 *attr); + int mvebu_mbus_add_window_remap_by_id(unsigned int target, + unsigned int attribute, + phys_addr_t base, size_t size, diff --git a/target/linux/mvebu/patches-4.4/030-mvneta-consolidate-autoneg-enabling.patch b/target/linux/mvebu/patches-4.4/030-mvneta-consolidate-autoneg-enabling.patch new file mode 100644 index 0000000000..1d98c7decc --- /dev/null +++ b/target/linux/mvebu/patches-4.4/030-mvneta-consolidate-autoneg-enabling.patch @@ -0,0 +1,55 @@ +From: Stas Sergeev <stsp@list.ru> +Date: Wed, 2 Dec 2015 20:33:56 +0300 +Subject: [PATCH] mvneta: consolidate autoneg enabling + +This moves autoneg-related bit manipulations to the single place. + +CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> +CC: netdev@vger.kernel.org +CC: linux-kernel@vger.kernel.org + +Signed-off-by: Stas Sergeev <stsp@users.sourceforge.net> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -1067,15 +1067,28 @@ static void mvneta_defaults_set(struct m + MVNETA_GMAC_AN_SPEED_EN | + MVNETA_GMAC_AN_DUPLEX_EN; + mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); ++ + val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); + val |= MVNETA_GMAC_1MS_CLOCK_ENABLE; + mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); ++ ++ val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); ++ val |= MVNETA_GMAC2_INBAND_AN_ENABLE; ++ mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); + } else { + val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); + val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE | + MVNETA_GMAC_AN_SPEED_EN | + MVNETA_GMAC_AN_DUPLEX_EN); + mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); ++ ++ val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); ++ val &= ~MVNETA_GMAC_1MS_CLOCK_ENABLE; ++ mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); ++ ++ val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); ++ val &= ~MVNETA_GMAC2_INBAND_AN_ENABLE; ++ mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); + } + + mvneta_set_ucast_table(pp, -1); +@@ -3230,9 +3243,6 @@ static int mvneta_port_power_up(struct m + return -EINVAL; + } + +- if (pp->use_inband_status) +- ctrl |= MVNETA_GMAC2_INBAND_AN_ENABLE; +- + /* Cancel Port Reset */ + ctrl &= ~MVNETA_GMAC2_PORT_RESET; + mvreg_write(pp, MVNETA_GMAC_CTRL_2, ctrl); diff --git a/target/linux/mvebu/patches-4.4/031-mvneta-implement-ethtool-autonegotiation-control.patch b/target/linux/mvebu/patches-4.4/031-mvneta-implement-ethtool-autonegotiation-control.patch new file mode 100644 index 0000000000..626b511c45 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/031-mvneta-implement-ethtool-autonegotiation-control.patch @@ -0,0 +1,165 @@ +From: Stas Sergeev <stsp@list.ru> +Date: Wed, 2 Dec 2015 20:35:11 +0300 +Subject: [PATCH] mvneta: implement ethtool autonegotiation control + +This patch allows to do +ethtool -s eth0 autoneg off +ethtool -s eth0 autoneg on +to disable or enable autonegotiation at run-time. +Without that functionality, the only way to control the autonegotiation +is to modify the device tree. + +This is needed if you plan to use the same kernel with +different ethernet switches, the ones that support the in-band +status and the ones that not. + +CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> +CC: netdev@vger.kernel.org +CC: linux-kernel@vger.kernel.org + +Signed-off-by: Stas Sergeev <stsp@users.sourceforge.net> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -371,7 +371,7 @@ struct mvneta_port { + unsigned int duplex; + unsigned int speed; + unsigned int tx_csum_limit; +- int use_inband_status:1; ++ unsigned int use_inband_status:1; + + u64 ethtool_stats[ARRAY_SIZE(mvneta_statistics)]; + }; +@@ -973,6 +973,44 @@ static void mvneta_set_other_mcast_table + mvreg_write(pp, MVNETA_DA_FILT_OTH_MCAST + offset, val); + } + ++static void mvneta_set_autoneg(struct mvneta_port *pp, int enable) ++{ ++ u32 val; ++ ++ if (enable) { ++ val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); ++ val &= ~(MVNETA_GMAC_FORCE_LINK_PASS | ++ MVNETA_GMAC_FORCE_LINK_DOWN | ++ MVNETA_GMAC_AN_FLOW_CTRL_EN); ++ val |= MVNETA_GMAC_INBAND_AN_ENABLE | ++ MVNETA_GMAC_AN_SPEED_EN | ++ MVNETA_GMAC_AN_DUPLEX_EN; ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); ++ ++ val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); ++ val |= MVNETA_GMAC_1MS_CLOCK_ENABLE; ++ mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); ++ ++ val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); ++ val |= MVNETA_GMAC2_INBAND_AN_ENABLE; ++ mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); ++ } else { ++ val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); ++ val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE | ++ MVNETA_GMAC_AN_SPEED_EN | ++ MVNETA_GMAC_AN_DUPLEX_EN); ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); ++ ++ val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); ++ val &= ~MVNETA_GMAC_1MS_CLOCK_ENABLE; ++ mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); ++ ++ val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); ++ val &= ~MVNETA_GMAC2_INBAND_AN_ENABLE; ++ mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); ++ } ++} ++ + /* This method sets defaults to the NETA port: + * Clears interrupt Cause and Mask registers. + * Clears all MAC tables. +@@ -1058,39 +1096,7 @@ static void mvneta_defaults_set(struct m + val &= ~MVNETA_PHY_POLLING_ENABLE; + mvreg_write(pp, MVNETA_UNIT_CONTROL, val); + +- if (pp->use_inband_status) { +- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~(MVNETA_GMAC_FORCE_LINK_PASS | +- MVNETA_GMAC_FORCE_LINK_DOWN | +- MVNETA_GMAC_AN_FLOW_CTRL_EN); +- val |= MVNETA_GMAC_INBAND_AN_ENABLE | +- MVNETA_GMAC_AN_SPEED_EN | +- MVNETA_GMAC_AN_DUPLEX_EN; +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); +- val |= MVNETA_GMAC_1MS_CLOCK_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); +- val |= MVNETA_GMAC2_INBAND_AN_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); +- } else { +- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE | +- MVNETA_GMAC_AN_SPEED_EN | +- MVNETA_GMAC_AN_DUPLEX_EN); +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); +- val &= ~MVNETA_GMAC_1MS_CLOCK_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); +- val &= ~MVNETA_GMAC2_INBAND_AN_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); +- } +- ++ mvneta_set_autoneg(pp, pp->use_inband_status); + mvneta_set_ucast_table(pp, -1); + mvneta_set_special_mcast_table(pp, -1); + mvneta_set_other_mcast_table(pp, -1); +@@ -2956,10 +2962,43 @@ int mvneta_ethtool_get_settings(struct n + int mvneta_ethtool_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) + { + struct mvneta_port *pp = netdev_priv(dev); ++ struct phy_device *phydev = pp->phy_dev; + +- if (!pp->phy_dev) ++ if (!phydev) + return -ENODEV; + ++ if ((cmd->autoneg == AUTONEG_ENABLE) != pp->use_inband_status) { ++ u32 val; ++ ++ mvneta_set_autoneg(pp, cmd->autoneg == AUTONEG_ENABLE); ++ ++ if (cmd->autoneg == AUTONEG_DISABLE) { ++ val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); ++ val &= ~(MVNETA_GMAC_CONFIG_MII_SPEED | ++ MVNETA_GMAC_CONFIG_GMII_SPEED | ++ MVNETA_GMAC_CONFIG_FULL_DUPLEX); ++ ++ if (phydev->duplex) ++ val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX; ++ ++ if (phydev->speed == SPEED_1000) ++ val |= MVNETA_GMAC_CONFIG_GMII_SPEED; ++ else if (phydev->speed == SPEED_100) ++ val |= MVNETA_GMAC_CONFIG_MII_SPEED; ++ ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); ++ } ++ ++ pp->use_inband_status = (cmd->autoneg == AUTONEG_ENABLE); ++ netdev_info(pp->dev, "autoneg status set to %i\n", ++ pp->use_inband_status); ++ ++ if (netif_running(dev)) { ++ mvneta_port_down(pp); ++ mvneta_port_up(pp); ++ } ++ } ++ + return phy_ethtool_sset(pp->phy_dev, cmd); + } + diff --git a/target/linux/mvebu/patches-4.4/032-net-mvneta-Make-the-default-queue-related-for-each-p.patch b/target/linux/mvebu/patches-4.4/032-net-mvneta-Make-the-default-queue-related-for-each-p.patch new file mode 100644 index 0000000000..54c93998f6 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/032-net-mvneta-Make-the-default-queue-related-for-each-p.patch @@ -0,0 +1,131 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Wed, 9 Dec 2015 18:23:48 +0100 +Subject: [PATCH] net: mvneta: Make the default queue related for each port + +Instead of using the same default queue for all the port. Move it in the +port struct. It will allow have a different default queue for each port. + +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -356,6 +356,7 @@ struct mvneta_port { + struct mvneta_tx_queue *txqs; + struct net_device *dev; + struct notifier_block cpu_notifier; ++ int rxq_def; + + /* Core clock */ + struct clk *clk; +@@ -819,7 +820,7 @@ static void mvneta_port_up(struct mvneta + mvreg_write(pp, MVNETA_TXQ_CMD, q_map); + + /* Enable all initialized RXQs. */ +- mvreg_write(pp, MVNETA_RXQ_CMD, BIT(rxq_def)); ++ mvreg_write(pp, MVNETA_RXQ_CMD, BIT(pp->rxq_def)); + } + + /* Stop the Ethernet port activity */ +@@ -1067,7 +1068,7 @@ static void mvneta_defaults_set(struct m + mvreg_write(pp, MVNETA_ACC_MODE, val); + + /* Update val of portCfg register accordingly with all RxQueue types */ +- val = MVNETA_PORT_CONFIG_DEFL_VALUE(rxq_def); ++ val = MVNETA_PORT_CONFIG_DEFL_VALUE(pp->rxq_def); + mvreg_write(pp, MVNETA_PORT_CONFIG, val); + + val = 0; +@@ -2101,19 +2102,19 @@ static void mvneta_set_rx_mode(struct ne + if (dev->flags & IFF_PROMISC) { + /* Accept all: Multicast + Unicast */ + mvneta_rx_unicast_promisc_set(pp, 1); +- mvneta_set_ucast_table(pp, rxq_def); +- mvneta_set_special_mcast_table(pp, rxq_def); +- mvneta_set_other_mcast_table(pp, rxq_def); ++ mvneta_set_ucast_table(pp, pp->rxq_def); ++ mvneta_set_special_mcast_table(pp, pp->rxq_def); ++ mvneta_set_other_mcast_table(pp, pp->rxq_def); + } else { + /* Accept single Unicast */ + mvneta_rx_unicast_promisc_set(pp, 0); + mvneta_set_ucast_table(pp, -1); +- mvneta_mac_addr_set(pp, dev->dev_addr, rxq_def); ++ mvneta_mac_addr_set(pp, dev->dev_addr, pp->rxq_def); + + if (dev->flags & IFF_ALLMULTI) { + /* Accept all multicast */ +- mvneta_set_special_mcast_table(pp, rxq_def); +- mvneta_set_other_mcast_table(pp, rxq_def); ++ mvneta_set_special_mcast_table(pp, pp->rxq_def); ++ mvneta_set_other_mcast_table(pp, pp->rxq_def); + } else { + /* Accept only initialized multicast */ + mvneta_set_special_mcast_table(pp, -1); +@@ -2122,7 +2123,7 @@ static void mvneta_set_rx_mode(struct ne + if (!netdev_mc_empty(dev)) { + netdev_for_each_mc_addr(ha, dev) { + mvneta_mcast_addr_set(pp, ha->addr, +- rxq_def); ++ pp->rxq_def); + } + } + } +@@ -2205,7 +2206,7 @@ static int mvneta_poll(struct napi_struc + * RX packets + */ + cause_rx_tx |= port->cause_rx_tx; +- rx_done = mvneta_rx(pp, budget, &pp->rxqs[rxq_def]); ++ rx_done = mvneta_rx(pp, budget, &pp->rxqs[pp->rxq_def]); + budget -= rx_done; + + if (budget > 0) { +@@ -2418,17 +2419,17 @@ static void mvneta_cleanup_txqs(struct m + /* Cleanup all Rx queues */ + static void mvneta_cleanup_rxqs(struct mvneta_port *pp) + { +- mvneta_rxq_deinit(pp, &pp->rxqs[rxq_def]); ++ mvneta_rxq_deinit(pp, &pp->rxqs[pp->rxq_def]); + } + + + /* Init all Rx queues */ + static int mvneta_setup_rxqs(struct mvneta_port *pp) + { +- int err = mvneta_rxq_init(pp, &pp->rxqs[rxq_def]); ++ int err = mvneta_rxq_init(pp, &pp->rxqs[pp->rxq_def]); + if (err) { + netdev_err(pp->dev, "%s: can't create rxq=%d\n", +- __func__, rxq_def); ++ __func__, pp->rxq_def); + mvneta_cleanup_rxqs(pp); + return err; + } +@@ -2634,7 +2635,7 @@ static int mvneta_set_mac_addr(struct ne + mvneta_mac_addr_set(pp, dev->dev_addr, -1); + + /* Set new addr in hw */ +- mvneta_mac_addr_set(pp, sockaddr->sa_data, rxq_def); ++ mvneta_mac_addr_set(pp, sockaddr->sa_data, pp->rxq_def); + + eth_commit_mac_addr_change(dev, addr); + return 0; +@@ -2753,7 +2754,7 @@ static void mvneta_percpu_elect(struct m + { + int online_cpu_idx, cpu, i = 0; + +- online_cpu_idx = rxq_def % num_online_cpus(); ++ online_cpu_idx = pp->rxq_def % num_online_cpus(); + + for_each_online_cpu(cpu) { + if (i == online_cpu_idx) +@@ -3363,6 +3364,8 @@ static int mvneta_probe(struct platform_ + strcmp(managed, "in-band-status") == 0); + pp->cpu_notifier.notifier_call = mvneta_percpu_notifier; + ++ pp->rxq_def = rxq_def; ++ + pp->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pp->clk)) { + err = PTR_ERR(pp->clk); diff --git a/target/linux/mvebu/patches-4.4/033-net-mvneta-Associate-RX-queues-with-each-CPU.patch b/target/linux/mvebu/patches-4.4/033-net-mvneta-Associate-RX-queues-with-each-CPU.patch new file mode 100644 index 0000000000..636c6cf364 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/033-net-mvneta-Associate-RX-queues-with-each-CPU.patch @@ -0,0 +1,278 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Wed, 9 Dec 2015 18:23:49 +0100 +Subject: [PATCH] net: mvneta: Associate RX queues with each CPU + +We enable the percpu interrupt for all the CPU and we just associate a +CPU to a few queue at the neta level. The mapping between the CPUs and +the queues is static. The queues are associated to the CPU module the +number of CPUs. However currently we only use on RX queue for a given +Ethernet port. + +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -110,9 +110,16 @@ + #define MVNETA_CPU_MAP(cpu) (0x2540 + ((cpu) << 2)) + #define MVNETA_CPU_RXQ_ACCESS_ALL_MASK 0x000000ff + #define MVNETA_CPU_TXQ_ACCESS_ALL_MASK 0x0000ff00 ++#define MVNETA_CPU_RXQ_ACCESS(rxq) BIT(rxq) + #define MVNETA_RXQ_TIME_COAL_REG(q) (0x2580 + ((q) << 2)) + +-/* Exception Interrupt Port/Queue Cause register */ ++/* Exception Interrupt Port/Queue Cause register ++ * ++ * Their behavior depend of the mapping done using the PCPX2Q ++ * registers. For a given CPU if the bit associated to a queue is not ++ * set, then for the register a read from this CPU will always return ++ * 0 and a write won't do anything ++ */ + + #define MVNETA_INTR_NEW_CAUSE 0x25a0 + #define MVNETA_INTR_NEW_MASK 0x25a4 +@@ -820,7 +827,13 @@ static void mvneta_port_up(struct mvneta + mvreg_write(pp, MVNETA_TXQ_CMD, q_map); + + /* Enable all initialized RXQs. */ +- mvreg_write(pp, MVNETA_RXQ_CMD, BIT(pp->rxq_def)); ++ for (queue = 0; queue < rxq_number; queue++) { ++ struct mvneta_rx_queue *rxq = &pp->rxqs[queue]; ++ ++ if (rxq->descs != NULL) ++ q_map |= (1 << queue); ++ } ++ mvreg_write(pp, MVNETA_RXQ_CMD, q_map); + } + + /* Stop the Ethernet port activity */ +@@ -1026,6 +1039,7 @@ static void mvneta_defaults_set(struct m + int cpu; + int queue; + u32 val; ++ int max_cpu = num_present_cpus(); + + /* Clear all Cause registers */ + mvreg_write(pp, MVNETA_INTR_NEW_CAUSE, 0); +@@ -1041,13 +1055,23 @@ static void mvneta_defaults_set(struct m + /* Enable MBUS Retry bit16 */ + mvreg_write(pp, MVNETA_MBUS_RETRY, 0x20); + +- /* Set CPU queue access map - all CPUs have access to all RX +- * queues and to all TX queues ++ /* Set CPU queue access map. CPUs are assigned to the RX ++ * queues modulo their number and all the TX queues are ++ * assigned to the CPU associated to the default RX queue. + */ +- for_each_present_cpu(cpu) +- mvreg_write(pp, MVNETA_CPU_MAP(cpu), +- (MVNETA_CPU_RXQ_ACCESS_ALL_MASK | +- MVNETA_CPU_TXQ_ACCESS_ALL_MASK)); ++ for_each_present_cpu(cpu) { ++ int rxq_map = 0, txq_map = 0; ++ int rxq; ++ ++ for (rxq = 0; rxq < rxq_number; rxq++) ++ if ((rxq % max_cpu) == cpu) ++ rxq_map |= MVNETA_CPU_RXQ_ACCESS(rxq); ++ ++ if (cpu == rxq_def) ++ txq_map = MVNETA_CPU_TXQ_ACCESS_ALL_MASK; ++ ++ mvreg_write(pp, MVNETA_CPU_MAP(cpu), rxq_map | txq_map); ++ } + + /* Reset RX and TX DMAs */ + mvreg_write(pp, MVNETA_PORT_RX_RESET, MVNETA_PORT_RX_DMA_RESET); +@@ -2174,6 +2198,7 @@ static int mvneta_poll(struct napi_struc + { + int rx_done = 0; + u32 cause_rx_tx; ++ int rx_queue; + struct mvneta_port *pp = netdev_priv(napi->dev); + struct mvneta_pcpu_port *port = this_cpu_ptr(pp->ports); + +@@ -2205,8 +2230,15 @@ static int mvneta_poll(struct napi_struc + /* For the case where the last mvneta_poll did not process all + * RX packets + */ ++ rx_queue = fls(((cause_rx_tx >> 8) & 0xff)); ++ + cause_rx_tx |= port->cause_rx_tx; +- rx_done = mvneta_rx(pp, budget, &pp->rxqs[pp->rxq_def]); ++ ++ if (rx_queue) { ++ rx_queue = rx_queue - 1; ++ rx_done = mvneta_rx(pp, budget, &pp->rxqs[rx_queue]); ++ } ++ + budget -= rx_done; + + if (budget > 0) { +@@ -2419,19 +2451,27 @@ static void mvneta_cleanup_txqs(struct m + /* Cleanup all Rx queues */ + static void mvneta_cleanup_rxqs(struct mvneta_port *pp) + { +- mvneta_rxq_deinit(pp, &pp->rxqs[pp->rxq_def]); ++ int queue; ++ ++ for (queue = 0; queue < txq_number; queue++) ++ mvneta_rxq_deinit(pp, &pp->rxqs[queue]); + } + + + /* Init all Rx queues */ + static int mvneta_setup_rxqs(struct mvneta_port *pp) + { +- int err = mvneta_rxq_init(pp, &pp->rxqs[pp->rxq_def]); +- if (err) { +- netdev_err(pp->dev, "%s: can't create rxq=%d\n", +- __func__, pp->rxq_def); +- mvneta_cleanup_rxqs(pp); +- return err; ++ int queue; ++ ++ for (queue = 0; queue < rxq_number; queue++) { ++ int err = mvneta_rxq_init(pp, &pp->rxqs[queue]); ++ ++ if (err) { ++ netdev_err(pp->dev, "%s: can't create rxq=%d\n", ++ __func__, queue); ++ mvneta_cleanup_rxqs(pp); ++ return err; ++ } + } + + return 0; +@@ -2455,6 +2495,19 @@ static int mvneta_setup_txqs(struct mvne + return 0; + } + ++static void mvneta_percpu_unmask_interrupt(void *arg) ++{ ++ struct mvneta_port *pp = arg; ++ ++ /* All the queue are unmasked, but actually only the ones ++ * maped to this CPU will be unmasked ++ */ ++ mvreg_write(pp, MVNETA_INTR_NEW_MASK, ++ MVNETA_RX_INTR_MASK_ALL | ++ MVNETA_TX_INTR_MASK_ALL | ++ MVNETA_MISCINTR_INTR_MASK); ++} ++ + static void mvneta_start_dev(struct mvneta_port *pp) + { + unsigned int cpu; +@@ -2472,11 +2525,10 @@ static void mvneta_start_dev(struct mvne + napi_enable(&port->napi); + } + +- /* Unmask interrupts */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, +- MVNETA_RX_INTR_MASK(rxq_number) | +- MVNETA_TX_INTR_MASK(txq_number) | +- MVNETA_MISCINTR_INTR_MASK); ++ /* Unmask interrupts. It has to be done from each CPU */ ++ for_each_online_cpu(cpu) ++ smp_call_function_single(cpu, mvneta_percpu_unmask_interrupt, ++ pp, true); + mvreg_write(pp, MVNETA_INTR_MISC_MASK, + MVNETA_CAUSE_PHY_STATUS_CHANGE | + MVNETA_CAUSE_LINK_CHANGE | +@@ -2752,22 +2804,35 @@ static void mvneta_percpu_disable(void * + + static void mvneta_percpu_elect(struct mvneta_port *pp) + { +- int online_cpu_idx, cpu, i = 0; ++ int online_cpu_idx, max_cpu, cpu, i = 0; + + online_cpu_idx = pp->rxq_def % num_online_cpus(); ++ max_cpu = num_present_cpus(); + + for_each_online_cpu(cpu) { +- if (i == online_cpu_idx) +- /* Enable per-CPU interrupt on the one CPU we +- * just elected ++ int rxq_map = 0, txq_map = 0; ++ int rxq; ++ ++ for (rxq = 0; rxq < rxq_number; rxq++) ++ if ((rxq % max_cpu) == cpu) ++ rxq_map |= MVNETA_CPU_RXQ_ACCESS(rxq); ++ ++ if (i == online_cpu_idx) { ++ /* Map the default receive queue and transmit ++ * queue to the elected CPU + */ +- smp_call_function_single(cpu, mvneta_percpu_enable, +- pp, true); +- else +- /* Disable per-CPU interrupt on all the other CPU */ +- smp_call_function_single(cpu, mvneta_percpu_disable, +- pp, true); ++ rxq_map |= MVNETA_CPU_RXQ_ACCESS(pp->rxq_def); ++ txq_map = MVNETA_CPU_TXQ_ACCESS_ALL_MASK; ++ } ++ mvreg_write(pp, MVNETA_CPU_MAP(cpu), rxq_map | txq_map); ++ ++ /* Update the interrupt mask on each CPU according the ++ * new mapping ++ */ ++ smp_call_function_single(cpu, mvneta_percpu_unmask_interrupt, ++ pp, true); + i++; ++ + } + }; + +@@ -2802,12 +2867,22 @@ static int mvneta_percpu_notifier(struct + mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); + napi_enable(&port->napi); + ++ ++ /* Enable per-CPU interrupts on the CPU that is ++ * brought up. ++ */ ++ smp_call_function_single(cpu, mvneta_percpu_enable, ++ pp, true); ++ + /* Enable per-CPU interrupt on the one CPU we care + * about. + */ + mvneta_percpu_elect(pp); + +- /* Unmask all ethernet port interrupts */ ++ /* Unmask all ethernet port interrupts, as this ++ * notifier is called for each CPU then the CPU to ++ * Queue mapping is applied ++ */ + mvreg_write(pp, MVNETA_INTR_NEW_MASK, + MVNETA_RX_INTR_MASK(rxq_number) | + MVNETA_TX_INTR_MASK(txq_number) | +@@ -2858,7 +2933,7 @@ static int mvneta_percpu_notifier(struct + static int mvneta_open(struct net_device *dev) + { + struct mvneta_port *pp = netdev_priv(dev); +- int ret; ++ int ret, cpu; + + pp->pkt_size = MVNETA_RX_PKT_SIZE(pp->dev->mtu); + pp->frag_size = SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(pp->pkt_size)) + +@@ -2888,8 +2963,13 @@ static int mvneta_open(struct net_device + */ + mvneta_percpu_disable(pp); + +- /* Elect a CPU to handle our RX queue interrupt */ +- mvneta_percpu_elect(pp); ++ /* Enable per-CPU interrupt on all the CPU to handle our RX ++ * queue interrupts ++ */ ++ for_each_online_cpu(cpu) ++ smp_call_function_single(cpu, mvneta_percpu_enable, ++ pp, true); ++ + + /* Register a CPU notifier to handle the case where our CPU + * might be taken offline. diff --git a/target/linux/mvebu/patches-4.4/034-net-mvneta-Add-naive-RSS-support.patch b/target/linux/mvebu/patches-4.4/034-net-mvneta-Add-naive-RSS-support.patch new file mode 100644 index 0000000000..629c44c8a1 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/034-net-mvneta-Add-naive-RSS-support.patch @@ -0,0 +1,191 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Wed, 9 Dec 2015 18:23:50 +0100 +Subject: [PATCH] net: mvneta: Add naive RSS support + +This patch adds the support for the RSS related ethtool +function. Currently it only uses one entry in the indirection table which +allows associating an mvneta interface to a given CPU. + +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Tested-by: Marcin Wojtas <mw@semihalf.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -261,6 +261,11 @@ + + #define MVNETA_TX_MTU_MAX 0x3ffff + ++/* The RSS lookup table actually has 256 entries but we do not use ++ * them yet ++ */ ++#define MVNETA_RSS_LU_TABLE_SIZE 1 ++ + /* TSO header size */ + #define TSO_HEADER_SIZE 128 + +@@ -382,6 +387,8 @@ struct mvneta_port { + unsigned int use_inband_status:1; + + u64 ethtool_stats[ARRAY_SIZE(mvneta_statistics)]; ++ ++ u32 indir[MVNETA_RSS_LU_TABLE_SIZE]; + }; + + /* The mvneta_tx_desc and mvneta_rx_desc structures describe the +@@ -1067,7 +1074,7 @@ static void mvneta_defaults_set(struct m + if ((rxq % max_cpu) == cpu) + rxq_map |= MVNETA_CPU_RXQ_ACCESS(rxq); + +- if (cpu == rxq_def) ++ if (cpu == pp->rxq_def) + txq_map = MVNETA_CPU_TXQ_ACCESS_ALL_MASK; + + mvreg_write(pp, MVNETA_CPU_MAP(cpu), rxq_map | txq_map); +@@ -2508,6 +2515,18 @@ static void mvneta_percpu_unmask_interru + MVNETA_MISCINTR_INTR_MASK); + } + ++static void mvneta_percpu_mask_interrupt(void *arg) ++{ ++ struct mvneta_port *pp = arg; ++ ++ /* All the queue are masked, but actually only the ones ++ * maped to this CPU will be masked ++ */ ++ mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0); ++ mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0); ++ mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); ++} ++ + static void mvneta_start_dev(struct mvneta_port *pp) + { + unsigned int cpu; +@@ -3231,6 +3250,106 @@ static int mvneta_ethtool_get_sset_count + return -EOPNOTSUPP; + } + ++static u32 mvneta_ethtool_get_rxfh_indir_size(struct net_device *dev) ++{ ++ return MVNETA_RSS_LU_TABLE_SIZE; ++} ++ ++static int mvneta_ethtool_get_rxnfc(struct net_device *dev, ++ struct ethtool_rxnfc *info, ++ u32 *rules __always_unused) ++{ ++ switch (info->cmd) { ++ case ETHTOOL_GRXRINGS: ++ info->data = rxq_number; ++ return 0; ++ case ETHTOOL_GRXFH: ++ return -EOPNOTSUPP; ++ default: ++ return -EOPNOTSUPP; ++ } ++} ++ ++static int mvneta_config_rss(struct mvneta_port *pp) ++{ ++ int cpu; ++ u32 val; ++ ++ netif_tx_stop_all_queues(pp->dev); ++ ++ for_each_online_cpu(cpu) ++ smp_call_function_single(cpu, mvneta_percpu_mask_interrupt, ++ pp, true); ++ ++ /* We have to synchronise on the napi of each CPU */ ++ for_each_online_cpu(cpu) { ++ struct mvneta_pcpu_port *pcpu_port = ++ per_cpu_ptr(pp->ports, cpu); ++ ++ napi_synchronize(&pcpu_port->napi); ++ napi_disable(&pcpu_port->napi); ++ } ++ ++ pp->rxq_def = pp->indir[0]; ++ ++ /* Update unicast mapping */ ++ mvneta_set_rx_mode(pp->dev); ++ ++ /* Update val of portCfg register accordingly with all RxQueue types */ ++ val = MVNETA_PORT_CONFIG_DEFL_VALUE(pp->rxq_def); ++ mvreg_write(pp, MVNETA_PORT_CONFIG, val); ++ ++ /* Update the elected CPU matching the new rxq_def */ ++ mvneta_percpu_elect(pp); ++ ++ /* We have to synchronise on the napi of each CPU */ ++ for_each_online_cpu(cpu) { ++ struct mvneta_pcpu_port *pcpu_port = ++ per_cpu_ptr(pp->ports, cpu); ++ ++ napi_enable(&pcpu_port->napi); ++ } ++ ++ netif_tx_start_all_queues(pp->dev); ++ ++ return 0; ++} ++ ++static int mvneta_ethtool_set_rxfh(struct net_device *dev, const u32 *indir, ++ const u8 *key, const u8 hfunc) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ /* We require at least one supported parameter to be changed ++ * and no change in any of the unsupported parameters ++ */ ++ if (key || ++ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)) ++ return -EOPNOTSUPP; ++ ++ if (!indir) ++ return 0; ++ ++ memcpy(pp->indir, indir, MVNETA_RSS_LU_TABLE_SIZE); ++ ++ return mvneta_config_rss(pp); ++} ++ ++static int mvneta_ethtool_get_rxfh(struct net_device *dev, u32 *indir, u8 *key, ++ u8 *hfunc) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ ++ if (hfunc) ++ *hfunc = ETH_RSS_HASH_TOP; ++ ++ if (!indir) ++ return 0; ++ ++ memcpy(indir, pp->indir, MVNETA_RSS_LU_TABLE_SIZE); ++ ++ return 0; ++} ++ + static const struct net_device_ops mvneta_netdev_ops = { + .ndo_open = mvneta_open, + .ndo_stop = mvneta_stop, +@@ -3255,6 +3374,10 @@ const struct ethtool_ops mvneta_eth_tool + .get_strings = mvneta_ethtool_get_strings, + .get_ethtool_stats = mvneta_ethtool_get_stats, + .get_sset_count = mvneta_ethtool_get_sset_count, ++ .get_rxfh_indir_size = mvneta_ethtool_get_rxfh_indir_size, ++ .get_rxnfc = mvneta_ethtool_get_rxnfc, ++ .get_rxfh = mvneta_ethtool_get_rxfh, ++ .set_rxfh = mvneta_ethtool_set_rxfh, + }; + + /* Initialize hw */ +@@ -3446,6 +3569,8 @@ static int mvneta_probe(struct platform_ + + pp->rxq_def = rxq_def; + ++ pp->indir[0] = rxq_def; ++ + pp->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pp->clk)) { + err = PTR_ERR(pp->clk); diff --git a/target/linux/mvebu/patches-4.4/035-net-mvneta-Configure-XPS-support.patch b/target/linux/mvebu/patches-4.4/035-net-mvneta-Configure-XPS-support.patch new file mode 100644 index 0000000000..5b35b6442b --- /dev/null +++ b/target/linux/mvebu/patches-4.4/035-net-mvneta-Configure-XPS-support.patch @@ -0,0 +1,124 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Wed, 9 Dec 2015 18:23:51 +0100 +Subject: [PATCH] net: mvneta: Configure XPS support + +With this patch each CPU is associated with its own set of TX queues. + +It also setup the XPS with an initial configuration which set the +affinity matching the hardware configuration. + +Suggested-by: Arnd Bergmann <arnd@arndb.de> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -111,6 +111,7 @@ + #define MVNETA_CPU_RXQ_ACCESS_ALL_MASK 0x000000ff + #define MVNETA_CPU_TXQ_ACCESS_ALL_MASK 0x0000ff00 + #define MVNETA_CPU_RXQ_ACCESS(rxq) BIT(rxq) ++#define MVNETA_CPU_TXQ_ACCESS(txq) BIT(txq + 8) + #define MVNETA_RXQ_TIME_COAL_REG(q) (0x2580 + ((q) << 2)) + + /* Exception Interrupt Port/Queue Cause register +@@ -514,6 +515,9 @@ struct mvneta_tx_queue { + + /* DMA address of TSO headers */ + dma_addr_t tso_hdrs_phys; ++ ++ /* Affinity mask for CPUs*/ ++ cpumask_t affinity_mask; + }; + + struct mvneta_rx_queue { +@@ -1062,20 +1066,30 @@ static void mvneta_defaults_set(struct m + /* Enable MBUS Retry bit16 */ + mvreg_write(pp, MVNETA_MBUS_RETRY, 0x20); + +- /* Set CPU queue access map. CPUs are assigned to the RX +- * queues modulo their number and all the TX queues are +- * assigned to the CPU associated to the default RX queue. ++ /* Set CPU queue access map. CPUs are assigned to the RX and ++ * TX queues modulo their number. If there is only one TX ++ * queue then it is assigned to the CPU associated to the ++ * default RX queue. + */ + for_each_present_cpu(cpu) { + int rxq_map = 0, txq_map = 0; +- int rxq; ++ int rxq, txq; + + for (rxq = 0; rxq < rxq_number; rxq++) + if ((rxq % max_cpu) == cpu) + rxq_map |= MVNETA_CPU_RXQ_ACCESS(rxq); + +- if (cpu == pp->rxq_def) +- txq_map = MVNETA_CPU_TXQ_ACCESS_ALL_MASK; ++ for (txq = 0; txq < txq_number; txq++) ++ if ((txq % max_cpu) == cpu) ++ txq_map |= MVNETA_CPU_TXQ_ACCESS(txq); ++ ++ /* With only one TX queue we configure a special case ++ * which will allow to get all the irq on a single ++ * CPU ++ */ ++ if (txq_number == 1) ++ txq_map = (cpu == pp->rxq_def) ? ++ MVNETA_CPU_TXQ_ACCESS(1) : 0; + + mvreg_write(pp, MVNETA_CPU_MAP(cpu), rxq_map | txq_map); + } +@@ -2362,6 +2376,8 @@ static void mvneta_rxq_deinit(struct mvn + static int mvneta_txq_init(struct mvneta_port *pp, + struct mvneta_tx_queue *txq) + { ++ int cpu; ++ + txq->size = pp->tx_ring_size; + + /* A queue must always have room for at least one skb. +@@ -2414,6 +2430,14 @@ static int mvneta_txq_init(struct mvneta + } + mvneta_tx_done_pkts_coal_set(pp, txq, txq->done_pkts_coal); + ++ /* Setup XPS mapping */ ++ if (txq_number > 1) ++ cpu = txq->id % num_present_cpus(); ++ else ++ cpu = pp->rxq_def % num_present_cpus(); ++ cpumask_set_cpu(cpu, &txq->affinity_mask); ++ netif_set_xps_queue(pp->dev, &txq->affinity_mask, txq->id); ++ + return 0; + } + +@@ -2836,13 +2860,23 @@ static void mvneta_percpu_elect(struct m + if ((rxq % max_cpu) == cpu) + rxq_map |= MVNETA_CPU_RXQ_ACCESS(rxq); + +- if (i == online_cpu_idx) { +- /* Map the default receive queue and transmit +- * queue to the elected CPU ++ if (i == online_cpu_idx) ++ /* Map the default receive queue queue to the ++ * elected CPU + */ + rxq_map |= MVNETA_CPU_RXQ_ACCESS(pp->rxq_def); +- txq_map = MVNETA_CPU_TXQ_ACCESS_ALL_MASK; +- } ++ ++ /* We update the TX queue map only if we have one ++ * queue. In this case we associate the TX queue to ++ * the CPU bound to the default RX queue ++ */ ++ if (txq_number == 1) ++ txq_map = (i == online_cpu_idx) ? ++ MVNETA_CPU_TXQ_ACCESS(1) : 0; ++ else ++ txq_map = mvreg_read(pp, MVNETA_CPU_MAP(cpu)) & ++ MVNETA_CPU_TXQ_ACCESS_ALL_MASK; ++ + mvreg_write(pp, MVNETA_CPU_MAP(cpu), rxq_map | txq_map); + + /* Update the interrupt mask on each CPU according the diff --git a/target/linux/mvebu/patches-4.4/036-net-mvneta-fix-trivial-cut-off-issue-in-mvneta_ethto.patch b/target/linux/mvebu/patches-4.4/036-net-mvneta-fix-trivial-cut-off-issue-in-mvneta_ethto.patch new file mode 100644 index 0000000000..2bd7a88032 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/036-net-mvneta-fix-trivial-cut-off-issue-in-mvneta_ethto.patch @@ -0,0 +1,46 @@ +From: Jisheng Zhang <jszhang@marvell.com> +Date: Wed, 20 Jan 2016 16:36:25 +0800 +Subject: [PATCH] net: mvneta: fix trivial cut-off issue in + mvneta_ethtool_update_stats + +When s->type is T_REG_64, the high 32bits are lost in val. This patch +fixes this trivial issue. + +Signed-off-by: Jisheng Zhang <jszhang@marvell.com> +Fixes: 9b0cdefa4cd5 ("net: mvneta: add ethtool statistics") +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3242,26 +3242,25 @@ static void mvneta_ethtool_update_stats( + const struct mvneta_statistic *s; + void __iomem *base = pp->base; + u32 high, low, val; ++ u64 val64; + int i; + + for (i = 0, s = mvneta_statistics; + s < mvneta_statistics + ARRAY_SIZE(mvneta_statistics); + s++, i++) { +- val = 0; +- + switch (s->type) { + case T_REG_32: + val = readl_relaxed(base + s->offset); ++ pp->ethtool_stats[i] += val; + break; + case T_REG_64: + /* Docs say to read low 32-bit then high */ + low = readl_relaxed(base + s->offset); + high = readl_relaxed(base + s->offset + 4); +- val = (u64)high << 32 | low; ++ val64 = (u64)high << 32 | low; ++ pp->ethtool_stats[i] += val64; + break; + } +- +- pp->ethtool_stats[i] += val; + } + } + diff --git a/target/linux/mvebu/patches-4.4/037-net-mvneta-Fix-for_each_present_cpu-usage.patch b/target/linux/mvebu/patches-4.4/037-net-mvneta-Fix-for_each_present_cpu-usage.patch new file mode 100644 index 0000000000..9ded5b71fe --- /dev/null +++ b/target/linux/mvebu/patches-4.4/037-net-mvneta-Fix-for_each_present_cpu-usage.patch @@ -0,0 +1,55 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Thu, 4 Feb 2016 22:09:23 +0100 +Subject: [PATCH] net: mvneta: Fix for_each_present_cpu usage + +This patch convert the for_each_present in on_each_cpu, instead of +applying on the present cpus it will be applied only on the online cpus. +This fix a bug reported on +http://thread.gmane.org/gmane.linux.ports.arm.kernel/468173. + +Using the macro on_each_cpu (instead of a for_each_* loop) also ensures +that all the calls will be done all at once. + +Fixes: f86428854480 ("net: mvneta: Statically assign queues to CPUs") +Reported-by: Stefan Roese <stefan.roese@gmail.com> +Suggested-by: Jisheng Zhang <jszhang@marvell.com> +Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -2562,7 +2562,7 @@ static void mvneta_start_dev(struct mvne + mvneta_port_enable(pp); + + /* Enable polling on the port */ +- for_each_present_cpu(cpu) { ++ for_each_online_cpu(cpu) { + struct mvneta_pcpu_port *port = per_cpu_ptr(pp->ports, cpu); + + napi_enable(&port->napi); +@@ -2587,7 +2587,7 @@ static void mvneta_stop_dev(struct mvnet + + phy_stop(pp->phy_dev); + +- for_each_present_cpu(cpu) { ++ for_each_online_cpu(cpu) { + struct mvneta_pcpu_port *port = per_cpu_ptr(pp->ports, cpu); + + napi_disable(&port->napi); +@@ -3055,13 +3055,11 @@ err_cleanup_rxqs: + static int mvneta_stop(struct net_device *dev) + { + struct mvneta_port *pp = netdev_priv(dev); +- int cpu; + + mvneta_stop_dev(pp); + mvneta_mdio_remove(pp); + unregister_cpu_notifier(&pp->cpu_notifier); +- for_each_present_cpu(cpu) +- smp_call_function_single(cpu, mvneta_percpu_disable, pp, true); ++ on_each_cpu(mvneta_percpu_disable, pp, true); + free_percpu_irq(dev->irq, pp->ports); + mvneta_cleanup_rxqs(pp); + mvneta_cleanup_txqs(pp); diff --git a/target/linux/mvebu/patches-4.4/038-net-mvneta-Fix-the-CPU-choice-in-mvneta_percpu_elect.patch b/target/linux/mvebu/patches-4.4/038-net-mvneta-Fix-the-CPU-choice-in-mvneta_percpu_elect.patch new file mode 100644 index 0000000000..4fc9ccc76a --- /dev/null +++ b/target/linux/mvebu/patches-4.4/038-net-mvneta-Fix-the-CPU-choice-in-mvneta_percpu_elect.patch @@ -0,0 +1,57 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Thu, 4 Feb 2016 22:09:24 +0100 +Subject: [PATCH] net: mvneta: Fix the CPU choice in mvneta_percpu_elect + +When passing to the management of multiple RX queue, the +mvneta_percpu_elect function was broken. The use of the modulo can lead +to elect the wrong cpu. For example with rxq_def=2, if the CPU 2 goes +offline and then online, we ended with the third RX queue activated in +the same time on CPU 0 and CPU2, which lead to a kernel crash. + +With this fix, we don't try to get "the closer" CPU if the default CPU is +gone, now we just use CPU 0 which always be there. Thanks to this, the +code becomes more readable, easier to maintain and more predicable. + +Cc: stable@vger.kernel.org +Fixes: 2dcf75e2793c ("net: mvneta: Associate RX queues with each CPU") +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -2847,9 +2847,14 @@ static void mvneta_percpu_disable(void * + + static void mvneta_percpu_elect(struct mvneta_port *pp) + { +- int online_cpu_idx, max_cpu, cpu, i = 0; ++ int elected_cpu = 0, max_cpu, cpu, i = 0; ++ ++ /* Use the cpu associated to the rxq when it is online, in all ++ * the other cases, use the cpu 0 which can't be offline. ++ */ ++ if (cpu_online(pp->rxq_def)) ++ elected_cpu = pp->rxq_def; + +- online_cpu_idx = pp->rxq_def % num_online_cpus(); + max_cpu = num_present_cpus(); + + for_each_online_cpu(cpu) { +@@ -2860,7 +2865,7 @@ static void mvneta_percpu_elect(struct m + if ((rxq % max_cpu) == cpu) + rxq_map |= MVNETA_CPU_RXQ_ACCESS(rxq); + +- if (i == online_cpu_idx) ++ if (cpu == elected_cpu) + /* Map the default receive queue queue to the + * elected CPU + */ +@@ -2871,7 +2876,7 @@ static void mvneta_percpu_elect(struct m + * the CPU bound to the default RX queue + */ + if (txq_number == 1) +- txq_map = (i == online_cpu_idx) ? ++ txq_map = (cpu == elected_cpu) ? + MVNETA_CPU_TXQ_ACCESS(1) : 0; + else + txq_map = mvreg_read(pp, MVNETA_CPU_MAP(cpu)) & diff --git a/target/linux/mvebu/patches-4.4/039-net-mvneta-Use-on_each_cpu-when-possible.patch b/target/linux/mvebu/patches-4.4/039-net-mvneta-Use-on_each_cpu-when-possible.patch new file mode 100644 index 0000000000..76257a2a71 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/039-net-mvneta-Use-on_each_cpu-when-possible.patch @@ -0,0 +1,68 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Thu, 4 Feb 2016 22:09:25 +0100 +Subject: [PATCH] net: mvneta: Use on_each_cpu when possible + +Instead of using a for_each_* loop in which we just call the +smp_call_function_single macro, it is more simple to directly use the +on_each_cpu macro. Moreover, this macro ensures that the calls will be +done all at once. + +Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -2553,7 +2553,7 @@ static void mvneta_percpu_mask_interrupt + + static void mvneta_start_dev(struct mvneta_port *pp) + { +- unsigned int cpu; ++ int cpu; + + mvneta_max_rx_size_set(pp, pp->pkt_size); + mvneta_txq_max_tx_size_set(pp, pp->pkt_size); +@@ -2569,9 +2569,8 @@ static void mvneta_start_dev(struct mvne + } + + /* Unmask interrupts. It has to be done from each CPU */ +- for_each_online_cpu(cpu) +- smp_call_function_single(cpu, mvneta_percpu_unmask_interrupt, +- pp, true); ++ on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true); ++ + mvreg_write(pp, MVNETA_INTR_MISC_MASK, + MVNETA_CAUSE_PHY_STATUS_CHANGE | + MVNETA_CAUSE_LINK_CHANGE | +@@ -2991,7 +2990,7 @@ static int mvneta_percpu_notifier(struct + static int mvneta_open(struct net_device *dev) + { + struct mvneta_port *pp = netdev_priv(dev); +- int ret, cpu; ++ int ret; + + pp->pkt_size = MVNETA_RX_PKT_SIZE(pp->dev->mtu); + pp->frag_size = SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(pp->pkt_size)) + +@@ -3024,9 +3023,7 @@ static int mvneta_open(struct net_device + /* Enable per-CPU interrupt on all the CPU to handle our RX + * queue interrupts + */ +- for_each_online_cpu(cpu) +- smp_call_function_single(cpu, mvneta_percpu_enable, +- pp, true); ++ on_each_cpu(mvneta_percpu_enable, pp, true); + + + /* Register a CPU notifier to handle the case where our CPU +@@ -3313,9 +3310,7 @@ static int mvneta_config_rss(struct mvn + + netif_tx_stop_all_queues(pp->dev); + +- for_each_online_cpu(cpu) +- smp_call_function_single(cpu, mvneta_percpu_mask_interrupt, +- pp, true); ++ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true); + + /* We have to synchronise on the napi of each CPU */ + for_each_online_cpu(cpu) { diff --git a/target/linux/mvebu/patches-4.4/040-net-mvneta-Modify-the-queue-related-fields-from-each.patch b/target/linux/mvebu/patches-4.4/040-net-mvneta-Modify-the-queue-related-fields-from-each.patch new file mode 100644 index 0000000000..b025777df9 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/040-net-mvneta-Modify-the-queue-related-fields-from-each.patch @@ -0,0 +1,179 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Thu, 4 Feb 2016 22:09:27 +0100 +Subject: [PATCH] net: mvneta: Modify the queue related fields from each cpu + +In the MVNETA_INTR_* registers, the queues related fields are per cpu, +according to the datasheet (comment in [] are added by me): +"In a multi-CPU system, bits of RX[or TX] queues for which the access by +the reading[or writing] CPU is disabled are read as 0, and cannot be +cleared[or written]." + +That means that each time we want to manipulate these bits we had to do +it on each cpu and not only on the current cpu. + +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -1036,6 +1036,43 @@ static void mvneta_set_autoneg(struct mv + } + } + ++static void mvneta_percpu_unmask_interrupt(void *arg) ++{ ++ struct mvneta_port *pp = arg; ++ ++ /* All the queue are unmasked, but actually only the ones ++ * mapped to this CPU will be unmasked ++ */ ++ mvreg_write(pp, MVNETA_INTR_NEW_MASK, ++ MVNETA_RX_INTR_MASK_ALL | ++ MVNETA_TX_INTR_MASK_ALL | ++ MVNETA_MISCINTR_INTR_MASK); ++} ++ ++static void mvneta_percpu_mask_interrupt(void *arg) ++{ ++ struct mvneta_port *pp = arg; ++ ++ /* All the queue are masked, but actually only the ones ++ * mapped to this CPU will be masked ++ */ ++ mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0); ++ mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0); ++ mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); ++} ++ ++static void mvneta_percpu_clear_intr_cause(void *arg) ++{ ++ struct mvneta_port *pp = arg; ++ ++ /* All the queue are cleared, but actually only the ones ++ * mapped to this CPU will be cleared ++ */ ++ mvreg_write(pp, MVNETA_INTR_NEW_CAUSE, 0); ++ mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0); ++ mvreg_write(pp, MVNETA_INTR_OLD_CAUSE, 0); ++} ++ + /* This method sets defaults to the NETA port: + * Clears interrupt Cause and Mask registers. + * Clears all MAC tables. +@@ -1053,14 +1090,10 @@ static void mvneta_defaults_set(struct m + int max_cpu = num_present_cpus(); + + /* Clear all Cause registers */ +- mvreg_write(pp, MVNETA_INTR_NEW_CAUSE, 0); +- mvreg_write(pp, MVNETA_INTR_OLD_CAUSE, 0); +- mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0); ++ on_each_cpu(mvneta_percpu_clear_intr_cause, pp, true); + + /* Mask all interrupts */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); ++ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true); + mvreg_write(pp, MVNETA_INTR_ENABLE, 0); + + /* Enable MBUS Retry bit16 */ +@@ -2526,31 +2559,6 @@ static int mvneta_setup_txqs(struct mvne + return 0; + } + +-static void mvneta_percpu_unmask_interrupt(void *arg) +-{ +- struct mvneta_port *pp = arg; +- +- /* All the queue are unmasked, but actually only the ones +- * maped to this CPU will be unmasked +- */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, +- MVNETA_RX_INTR_MASK_ALL | +- MVNETA_TX_INTR_MASK_ALL | +- MVNETA_MISCINTR_INTR_MASK); +-} +- +-static void mvneta_percpu_mask_interrupt(void *arg) +-{ +- struct mvneta_port *pp = arg; +- +- /* All the queue are masked, but actually only the ones +- * maped to this CPU will be masked +- */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); +-} +- + static void mvneta_start_dev(struct mvneta_port *pp) + { + int cpu; +@@ -2601,13 +2609,10 @@ static void mvneta_stop_dev(struct mvnet + mvneta_port_disable(pp); + + /* Clear all ethernet port interrupts */ +- mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0); +- mvreg_write(pp, MVNETA_INTR_OLD_CAUSE, 0); ++ on_each_cpu(mvneta_percpu_clear_intr_cause, pp, true); + + /* Mask all ethernet port interrupts */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); ++ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true); + + mvneta_tx_reset(pp); + mvneta_rx_reset(pp); +@@ -2919,9 +2924,7 @@ static int mvneta_percpu_notifier(struct + } + + /* Mask all ethernet port interrupts */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); ++ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true); + napi_enable(&port->napi); + + +@@ -2936,14 +2939,8 @@ static int mvneta_percpu_notifier(struct + */ + mvneta_percpu_elect(pp); + +- /* Unmask all ethernet port interrupts, as this +- * notifier is called for each CPU then the CPU to +- * Queue mapping is applied +- */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, +- MVNETA_RX_INTR_MASK(rxq_number) | +- MVNETA_TX_INTR_MASK(txq_number) | +- MVNETA_MISCINTR_INTR_MASK); ++ /* Unmask all ethernet port interrupts */ ++ on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true); + mvreg_write(pp, MVNETA_INTR_MISC_MASK, + MVNETA_CAUSE_PHY_STATUS_CHANGE | + MVNETA_CAUSE_LINK_CHANGE | +@@ -2954,9 +2951,7 @@ static int mvneta_percpu_notifier(struct + case CPU_DOWN_PREPARE_FROZEN: + netif_tx_stop_all_queues(pp->dev); + /* Mask all ethernet port interrupts */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0); +- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0); ++ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true); + + napi_synchronize(&port->napi); + napi_disable(&port->napi); +@@ -2972,10 +2967,7 @@ static int mvneta_percpu_notifier(struct + /* Check if a new CPU must be elected now this on is down */ + mvneta_percpu_elect(pp); + /* Unmask all ethernet port interrupts */ +- mvreg_write(pp, MVNETA_INTR_NEW_MASK, +- MVNETA_RX_INTR_MASK(rxq_number) | +- MVNETA_TX_INTR_MASK(txq_number) | +- MVNETA_MISCINTR_INTR_MASK); ++ on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true); + mvreg_write(pp, MVNETA_INTR_MISC_MASK, + MVNETA_CAUSE_PHY_STATUS_CHANGE | + MVNETA_CAUSE_LINK_CHANGE | diff --git a/target/linux/mvebu/patches-4.4/041-net-mvneta-The-mvneta_percpu_elect-function-should-b.patch b/target/linux/mvebu/patches-4.4/041-net-mvneta-The-mvneta_percpu_elect-function-should-b.patch new file mode 100644 index 0000000000..a77bef44e4 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/041-net-mvneta-The-mvneta_percpu_elect-function-should-b.patch @@ -0,0 +1,68 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Thu, 4 Feb 2016 22:09:28 +0100 +Subject: [PATCH] net: mvneta: The mvneta_percpu_elect function should be + atomic + +Electing a CPU must be done in an atomic way: it should be done after or +before the removal/insertion of a CPU and this function is not reentrant. + +During the loop of mvneta_percpu_elect we associates the queues to the +CPUs, if there is a topology change during this loop, then the mapping +between the CPUs and the queues could be wrong. During this loop the +interrupt mask is also updating for each CPUs, It should not be changed +in the same time by other part of the driver. + +This patch adds spinlock to create the needed critical sections. + +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -370,6 +370,10 @@ struct mvneta_port { + struct net_device *dev; + struct notifier_block cpu_notifier; + int rxq_def; ++ /* Protect the access to the percpu interrupt registers, ++ * ensuring that the configuration remains coherent. ++ */ ++ spinlock_t lock; + + /* Core clock */ + struct clk *clk; +@@ -2853,6 +2857,12 @@ static void mvneta_percpu_elect(struct m + { + int elected_cpu = 0, max_cpu, cpu, i = 0; + ++ /* Electing a CPU must be done in an atomic way: it should be ++ * done after or before the removal/insertion of a CPU and ++ * this function is not reentrant. ++ */ ++ spin_lock(&pp->lock); ++ + /* Use the cpu associated to the rxq when it is online, in all + * the other cases, use the cpu 0 which can't be offline. + */ +@@ -2896,6 +2906,7 @@ static void mvneta_percpu_elect(struct m + i++; + + } ++ spin_unlock(&pp->lock); + }; + + static int mvneta_percpu_notifier(struct notifier_block *nfb, +@@ -2950,8 +2961,13 @@ static int mvneta_percpu_notifier(struct + case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: + netif_tx_stop_all_queues(pp->dev); ++ /* Thanks to this lock we are sure that any pending ++ * cpu election is done ++ */ ++ spin_lock(&pp->lock); + /* Mask all ethernet port interrupts */ + on_each_cpu(mvneta_percpu_mask_interrupt, pp, true); ++ spin_unlock(&pp->lock); + + napi_synchronize(&port->napi); + napi_disable(&port->napi); diff --git a/target/linux/mvebu/patches-4.4/042-net-mvneta-Fix-race-condition-during-stopping.patch b/target/linux/mvebu/patches-4.4/042-net-mvneta-Fix-race-condition-during-stopping.patch new file mode 100644 index 0000000000..9936ebf320 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/042-net-mvneta-Fix-race-condition-during-stopping.patch @@ -0,0 +1,128 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Thu, 4 Feb 2016 22:09:29 +0100 +Subject: [PATCH] net: mvneta: Fix race condition during stopping + +When stopping the port, the CPU notifier are still there whereas the +mvneta_stop_dev function calls mvneta_percpu_disable() on each CPUs. +It was possible to have a new CPU coming at this point which could be +racy. + +This patch adds a flag preventing executing the code notifier for a new +CPU when the port is stopping. It also uses the spinlock introduces +previously. To avoid the deadlock, the lock has been moved outside the +mvneta_percpu_elect function. + +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -374,6 +374,7 @@ struct mvneta_port { + * ensuring that the configuration remains coherent. + */ + spinlock_t lock; ++ bool is_stopped; + + /* Core clock */ + struct clk *clk; +@@ -2853,16 +2854,14 @@ static void mvneta_percpu_disable(void * + disable_percpu_irq(pp->dev->irq); + } + ++/* Electing a CPU must be done in an atomic way: it should be done ++ * after or before the removal/insertion of a CPU and this function is ++ * not reentrant. ++ */ + static void mvneta_percpu_elect(struct mvneta_port *pp) + { + int elected_cpu = 0, max_cpu, cpu, i = 0; + +- /* Electing a CPU must be done in an atomic way: it should be +- * done after or before the removal/insertion of a CPU and +- * this function is not reentrant. +- */ +- spin_lock(&pp->lock); +- + /* Use the cpu associated to the rxq when it is online, in all + * the other cases, use the cpu 0 which can't be offline. + */ +@@ -2906,7 +2905,6 @@ static void mvneta_percpu_elect(struct m + i++; + + } +- spin_unlock(&pp->lock); + }; + + static int mvneta_percpu_notifier(struct notifier_block *nfb, +@@ -2920,6 +2918,14 @@ static int mvneta_percpu_notifier(struct + switch (action) { + case CPU_ONLINE: + case CPU_ONLINE_FROZEN: ++ spin_lock(&pp->lock); ++ /* Configuring the driver for a new CPU while the ++ * driver is stopping is racy, so just avoid it. ++ */ ++ if (pp->is_stopped) { ++ spin_unlock(&pp->lock); ++ break; ++ } + netif_tx_stop_all_queues(pp->dev); + + /* We have to synchronise on tha napi of each CPU +@@ -2957,6 +2963,7 @@ static int mvneta_percpu_notifier(struct + MVNETA_CAUSE_LINK_CHANGE | + MVNETA_CAUSE_PSC_SYNC_CHANGE); + netif_tx_start_all_queues(pp->dev); ++ spin_unlock(&pp->lock); + break; + case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: +@@ -2981,7 +2988,9 @@ static int mvneta_percpu_notifier(struct + case CPU_DEAD: + case CPU_DEAD_FROZEN: + /* Check if a new CPU must be elected now this on is down */ ++ spin_lock(&pp->lock); + mvneta_percpu_elect(pp); ++ spin_unlock(&pp->lock); + /* Unmask all ethernet port interrupts */ + on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true); + mvreg_write(pp, MVNETA_INTR_MISC_MASK, +@@ -3033,7 +3042,7 @@ static int mvneta_open(struct net_device + */ + on_each_cpu(mvneta_percpu_enable, pp, true); + +- ++ pp->is_stopped = false; + /* Register a CPU notifier to handle the case where our CPU + * might be taken offline. + */ +@@ -3066,9 +3075,18 @@ static int mvneta_stop(struct net_device + { + struct mvneta_port *pp = netdev_priv(dev); + ++ /* Inform that we are stopping so we don't want to setup the ++ * driver for new CPUs in the notifiers ++ */ ++ spin_lock(&pp->lock); ++ pp->is_stopped = true; + mvneta_stop_dev(pp); + mvneta_mdio_remove(pp); + unregister_cpu_notifier(&pp->cpu_notifier); ++ /* Now that the notifier are unregistered, we can release le ++ * lock ++ */ ++ spin_unlock(&pp->lock); + on_each_cpu(mvneta_percpu_disable, pp, true); + free_percpu_irq(dev->irq, pp->ports); + mvneta_cleanup_rxqs(pp); +@@ -3339,7 +3357,9 @@ static int mvneta_config_rss(struct mvn + mvreg_write(pp, MVNETA_PORT_CONFIG, val); + + /* Update the elected CPU matching the new rxq_def */ ++ spin_lock(&pp->lock); + mvneta_percpu_elect(pp); ++ spin_unlock(&pp->lock); + + /* We have to synchronise on the napi of each CPU */ + for_each_online_cpu(cpu) { diff --git a/target/linux/mvebu/patches-4.4/043-net-mvneta-sort-the-headers-in-alphabetic-order.patch b/target/linux/mvebu/patches-4.4/043-net-mvneta-sort-the-headers-in-alphabetic-order.patch new file mode 100644 index 0000000000..502c2584d9 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/043-net-mvneta-sort-the-headers-in-alphabetic-order.patch @@ -0,0 +1,56 @@ +From: Jisheng Zhang <jszhang@marvell.com> +Date: Wed, 20 Jan 2016 19:27:22 +0800 +Subject: [PATCH] net: mvneta: sort the headers in alphabetic order + +Sorting the headers in alphabetic order will help to reduce the conflict +when adding new headers in the future. + +Signed-off-by: Jisheng Zhang <jszhang@marvell.com> +Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -11,28 +11,28 @@ + * warranty of any kind, whether express or implied. + */ + +-#include <linux/kernel.h> +-#include <linux/netdevice.h> ++#include <linux/clk.h> ++#include <linux/cpu.h> + #include <linux/etherdevice.h> +-#include <linux/platform_device.h> +-#include <linux/skbuff.h> ++#include <linux/if_vlan.h> + #include <linux/inetdevice.h> +-#include <linux/mbus.h> +-#include <linux/module.h> + #include <linux/interrupt.h> +-#include <linux/if_vlan.h> +-#include <net/ip.h> +-#include <net/ipv6.h> + #include <linux/io.h> +-#include <net/tso.h> ++#include <linux/kernel.h> ++#include <linux/mbus.h> ++#include <linux/module.h> ++#include <linux/netdevice.h> + #include <linux/of.h> ++#include <linux/of_address.h> + #include <linux/of_irq.h> + #include <linux/of_mdio.h> + #include <linux/of_net.h> +-#include <linux/of_address.h> + #include <linux/phy.h> +-#include <linux/clk.h> +-#include <linux/cpu.h> ++#include <linux/platform_device.h> ++#include <linux/skbuff.h> ++#include <net/ip.h> ++#include <net/ipv6.h> ++#include <net/tso.h> + + /* Registers */ + #define MVNETA_RXQ_CONFIG_REG(q) (0x1400 + ((q) << 2)) diff --git a/target/linux/mvebu/patches-4.4/044-net-add-a-hardware-buffer-management-helper-API.patch b/target/linux/mvebu/patches-4.4/044-net-add-a-hardware-buffer-management-helper-API.patch new file mode 100644 index 0000000000..d4bc6a0088 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/044-net-add-a-hardware-buffer-management-helper-API.patch @@ -0,0 +1,159 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Mon, 14 Mar 2016 09:39:04 +0100 +Subject: [PATCH] net: add a hardware buffer management helper API + +This basic implementation allows to share code between driver using +hardware buffer management. As the code is hardware agnostic, there is +few helpers, most of the optimization brought by the an HW BM has to be +done at driver level. + +Tested-by: Sebastian Careba <nitroshift@yahoo.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + create mode 100644 include/net/hwbm.h + create mode 100644 net/core/hwbm.c + +--- /dev/null ++++ b/include/net/hwbm.h +@@ -0,0 +1,28 @@ ++#ifndef _HWBM_H ++#define _HWBM_H ++ ++struct hwbm_pool { ++ /* Capacity of the pool */ ++ int size; ++ /* Size of the buffers managed */ ++ int frag_size; ++ /* Number of buffers currently used by this pool */ ++ int buf_num; ++ /* constructor called during alocation */ ++ int (*construct)(struct hwbm_pool *bm_pool, void *buf); ++ /* protect acces to the buffer counter*/ ++ spinlock_t lock; ++ /* private data */ ++ void *priv; ++}; ++#ifdef CONFIG_HWBM ++void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf); ++int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp); ++int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num, gfp_t gfp); ++#else ++void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {} ++int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) { return 0; } ++int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num, gfp_t gfp) ++{ return 0; } ++#endif /* CONFIG_HWBM */ ++#endif /* _HWBM_H */ +--- a/net/Kconfig ++++ b/net/Kconfig +@@ -259,6 +259,9 @@ config XPS + depends on SMP + default y + ++config HWBM ++ bool ++ + config CGROUP_NET_PRIO + bool "Network priority cgroup" + depends on CGROUPS +--- a/net/core/Makefile ++++ b/net/core/Makefile +@@ -14,6 +14,7 @@ obj-y += dev.o ethtool.o dev_addr_ + obj-$(CONFIG_SOCK_DIAG) += sock_diag.o + obj-$(CONFIG_XFRM) += flow.o + obj-y += net-sysfs.o ++obj-$(CONFIG_HWBM) += hwbm.o + obj-$(CONFIG_PROC_FS) += net-procfs.o + obj-$(CONFIG_NET_PKTGEN) += pktgen.o + obj-$(CONFIG_NETPOLL) += netpoll.o +--- /dev/null ++++ b/net/core/hwbm.c +@@ -0,0 +1,87 @@ ++/* Support for hardware buffer manager. ++ * ++ * Copyright (C) 2016 Marvell ++ * ++ * Gregory CLEMENT <gregory.clement@free-electrons.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ */ ++#include <linux/kernel.h> ++#include <linux/printk.h> ++#include <linux/skbuff.h> ++#include <net/hwbm.h> ++ ++void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) ++{ ++ if (likely(bm_pool->frag_size <= PAGE_SIZE)) ++ skb_free_frag(buf); ++ else ++ kfree(buf); ++} ++EXPORT_SYMBOL_GPL(hwbm_buf_free); ++ ++/* Refill processing for HW buffer management */ ++int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) ++{ ++ int frag_size = bm_pool->frag_size; ++ void *buf; ++ ++ if (likely(frag_size <= PAGE_SIZE)) ++ buf = netdev_alloc_frag(frag_size); ++ else ++ buf = kmalloc(frag_size, gfp); ++ ++ if (!buf) ++ return -ENOMEM; ++ ++ if (bm_pool->construct) ++ if (bm_pool->construct(bm_pool, buf)) { ++ hwbm_buf_free(bm_pool, buf); ++ return -ENOMEM; ++ } ++ ++ return 0; ++} ++EXPORT_SYMBOL_GPL(hwbm_pool_refill); ++ ++int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num, gfp_t gfp) ++{ ++ int err, i; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&bm_pool->lock, flags); ++ if (bm_pool->buf_num == bm_pool->size) { ++ pr_warn("pool already filled\n"); ++ return bm_pool->buf_num; ++ } ++ ++ if (buf_num + bm_pool->buf_num > bm_pool->size) { ++ pr_warn("cannot allocate %d buffers for pool\n", ++ buf_num); ++ return 0; ++ } ++ ++ if ((buf_num + bm_pool->buf_num) < bm_pool->buf_num) { ++ pr_warn("Adding %d buffers to the %d current buffers will overflow\n", ++ buf_num, bm_pool->buf_num); ++ return 0; ++ } ++ ++ for (i = 0; i < buf_num; i++) { ++ err = hwbm_pool_refill(bm_pool, gfp); ++ if (err < 0) ++ break; ++ } ++ ++ /* Update BM driver with number of buffers added to pool */ ++ bm_pool->buf_num += i; ++ ++ pr_debug("hwpm pool: %d of %d buffers added\n", i, buf_num); ++ spin_unlock_irqrestore(&bm_pool->lock, flags); ++ ++ return i; ++} ++EXPORT_SYMBOL_GPL(hwbm_pool_add); diff --git a/target/linux/mvebu/patches-4.4/045-net-mvneta-bm-add-support-for-hardware-buffer-manage.patch b/target/linux/mvebu/patches-4.4/045-net-mvneta-bm-add-support-for-hardware-buffer-manage.patch new file mode 100644 index 0000000000..d343b3983f --- /dev/null +++ b/target/linux/mvebu/patches-4.4/045-net-mvneta-bm-add-support-for-hardware-buffer-manage.patch @@ -0,0 +1,1684 @@ +From: Marcin Wojtas <mw@semihalf.com> +Date: Mon, 14 Mar 2016 09:39:03 +0100 +Subject: [PATCH] net: mvneta: bm: add support for hardware buffer management + +Buffer manager (BM) is a dedicated hardware unit that can be used by all +ethernet ports of Armada XP and 38x SoC's. It allows to offload CPU on RX +path by sparing DRAM access on refilling buffer pool, hardware-based +filling of descriptor ring data and better memory utilization due to HW +arbitration for using 'short' pools for small packets. + +Tests performed with A388 SoC working as a network bridge between two +packet generators showed increase of maximum processed 64B packets by +~20k (~555k packets with BM enabled vs ~535 packets without BM). Also +when pushing 1500B-packets with a line rate achieved, CPU load decreased +from around 25% without BM to 20% with BM. + +BM comprise up to 4 buffer pointers' (BP) rings kept in DRAM, which +are called external BP pools - BPPE. Allocating and releasing buffer +pointers (BP) to/from BPPE is performed indirectly by write/read access +to a dedicated internal SRAM, where internal BP pools (BPPI) are placed. +BM hardware controls status of BPPE automatically, as well as assigning +proper buffers to RX descriptors. For more details please refer to +Functional Specification of Armada XP or 38x SoC. + +In order to enable support for a separate hardware block, common for all +ports, a new driver has to be implemented ('mvneta_bm'). It provides +initialization sequence of address space, clocks, registers, SRAM, +empty pools' structures and also obtaining optional configuration +from DT (please refer to device tree binding documentation). mvneta_bm +exposes also a necessary API to mvneta driver, as well as a dedicated +structure with BM information (bm_priv), whose presence is used as a +flag notifying of BM usage by port. It has to be ensured that mvneta_bm +probe is executed prior to the ones in ports' driver. In case BM is not +used or its probe fails, mvneta falls back to use software buffer +management. + +A sequence executed in mvneta_probe function is modified in order to have +an access to needed resources before possible port's BM initialization is +done. According to port-pools mapping provided by DT appropriate registers +are configured and the buffer pools are filled. RX path is modified +accordingly. Becaues the hardware allows a wide variety of configuration +options, following assumptions are made: +* using BM mechanisms can be selectively disabled/enabled basing + on DT configuration among the ports +* 'long' pool's single buffer size is tied to port's MTU +* using 'long' pool by port is obligatory and it cannot be shared +* using 'short' pool for smaller packets is optional +* one 'short' pool can be shared among all ports + +This commit enables hardware buffer management operation cooperating with +existing mvneta driver. New device tree binding documentation is added and +the one of mvneta is updated accordingly. + +[gregory.clement@free-electrons.com: removed the suspend/resume part] + +Signed-off-by: Marcin Wojtas <mw@semihalf.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + create mode 100644 Documentation/devicetree/bindings/net/marvell-neta-bm.txt + create mode 100644 drivers/net/ethernet/marvell/mvneta_bm.c + create mode 100644 drivers/net/ethernet/marvell/mvneta_bm.h + +--- a/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt ++++ b/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt +@@ -13,15 +13,30 @@ Optional properties: + Value is presented in bytes. If not used, by default 1600B is set for + "marvell,armada-370-neta" and 9800B for others. + ++Optional properties (valid only for Armada XP/38x): ++ ++- buffer-manager: a phandle to a buffer manager node. Please refer to ++ Documentation/devicetree/bindings/net/marvell-neta-bm.txt ++- bm,pool-long: ID of a pool, that will accept all packets of a size ++ higher than 'short' pool's threshold (if set) and up to MTU value. ++ Obligatory, when the port is supposed to use hardware ++ buffer management. ++- bm,pool-short: ID of a pool, that will be used for accepting ++ packets of a size lower than given threshold. If not set, the port ++ will use a single 'long' pool for all packets, as defined above. ++ + Example: + +-ethernet@d0070000 { ++ethernet@70000 { + compatible = "marvell,armada-370-neta"; +- reg = <0xd0070000 0x2500>; ++ reg = <0x70000 0x2500>; + interrupts = <8>; + clocks = <&gate_clk 4>; + tx-csum-limit = <9800> + status = "okay"; + phy = <&phy0>; + phy-mode = "rgmii-id"; ++ buffer-manager = <&bm>; ++ bm,pool-long = <0>; ++ bm,pool-short = <1>; + }; +--- /dev/null ++++ b/Documentation/devicetree/bindings/net/marvell-neta-bm.txt +@@ -0,0 +1,49 @@ ++* Marvell Armada 380/XP Buffer Manager driver (BM) ++ ++Required properties: ++ ++- compatible: should be "marvell,armada-380-neta-bm". ++- reg: address and length of the register set for the device. ++- clocks: a pointer to the reference clock for this device. ++- internal-mem: a phandle to BM internal SRAM definition. ++ ++Optional properties (port): ++ ++- pool<0 : 3>,capacity: size of external buffer pointers' ring maintained ++ in DRAM. Can be set for each pool (id 0 : 3) separately. The value has ++ to be chosen between 128 and 16352 and it also has to be aligned to 32. ++ Otherwise the driver would adjust a given number or choose default if ++ not set. ++- pool<0 : 3>,pkt-size: maximum size of a packet accepted by a given buffer ++ pointers' pool (id 0 : 3). It will be taken into consideration only when pool ++ type is 'short'. For 'long' ones it would be overridden by port's MTU. ++ If not set a driver will choose a default value. ++ ++In order to see how to hook the BM to a given ethernet port, please ++refer to Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt. ++ ++Example: ++ ++- main node: ++ ++bm: bm@c8000 { ++ compatible = "marvell,armada-380-neta-bm"; ++ reg = <0xc8000 0xac>; ++ clocks = <&gateclk 13>; ++ internal-mem = <&bm_bppi>; ++ status = "okay"; ++ pool2,capacity = <4096>; ++ pool1,pkt-size = <512>; ++}; ++ ++- internal SRAM node: ++ ++bm_bppi: bm-bppi { ++ compatible = "mmio-sram"; ++ reg = <MBUS_ID(0x0c, 0x04) 0 0x100000>; ++ ranges = <0 MBUS_ID(0x0c, 0x04) 0 0x100000>; ++ #address-cells = <1>; ++ #size-cells = <1>; ++ clocks = <&gateclk 13>; ++ status = "okay"; ++}; +--- a/drivers/net/ethernet/marvell/Kconfig ++++ b/drivers/net/ethernet/marvell/Kconfig +@@ -40,6 +40,19 @@ config MVMDIO + + This driver is used by the MV643XX_ETH and MVNETA drivers. + ++config MVNETA_BM ++ tristate "Marvell Armada 38x/XP network interface BM support" ++ depends on MVNETA ++ ---help--- ++ This driver supports auxiliary block of the network ++ interface units in the Marvell ARMADA XP and ARMADA 38x SoC ++ family, which is called buffer manager. ++ ++ This driver, when enabled, strictly cooperates with mvneta ++ driver and is common for all network ports of the devices, ++ even for Armada 370 SoC, which doesn't support hardware ++ buffer management. ++ + config MVNETA + tristate "Marvell Armada 370/38x/XP network interface support" + depends on PLAT_ORION +--- a/drivers/net/ethernet/marvell/Makefile ++++ b/drivers/net/ethernet/marvell/Makefile +@@ -4,6 +4,7 @@ + + obj-$(CONFIG_MVMDIO) += mvmdio.o + obj-$(CONFIG_MV643XX_ETH) += mv643xx_eth.o ++obj-$(CONFIG_MVNETA_BM) += mvneta_bm.o + obj-$(CONFIG_MVNETA) += mvneta.o + obj-$(CONFIG_MVPP2) += mvpp2.o + obj-$(CONFIG_PXA168_ETH) += pxa168_eth.o +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -30,6 +30,7 @@ + #include <linux/phy.h> + #include <linux/platform_device.h> + #include <linux/skbuff.h> ++#include "mvneta_bm.h" + #include <net/ip.h> + #include <net/ipv6.h> + #include <net/tso.h> +@@ -37,6 +38,10 @@ + /* Registers */ + #define MVNETA_RXQ_CONFIG_REG(q) (0x1400 + ((q) << 2)) + #define MVNETA_RXQ_HW_BUF_ALLOC BIT(0) ++#define MVNETA_RXQ_SHORT_POOL_ID_SHIFT 4 ++#define MVNETA_RXQ_SHORT_POOL_ID_MASK 0x30 ++#define MVNETA_RXQ_LONG_POOL_ID_SHIFT 6 ++#define MVNETA_RXQ_LONG_POOL_ID_MASK 0xc0 + #define MVNETA_RXQ_PKT_OFFSET_ALL_MASK (0xf << 8) + #define MVNETA_RXQ_PKT_OFFSET_MASK(offs) ((offs) << 8) + #define MVNETA_RXQ_THRESHOLD_REG(q) (0x14c0 + ((q) << 2)) +@@ -50,6 +55,9 @@ + #define MVNETA_RXQ_STATUS_UPDATE_REG(q) (0x1500 + ((q) << 2)) + #define MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT 16 + #define MVNETA_RXQ_ADD_NON_OCCUPIED_MAX 255 ++#define MVNETA_PORT_POOL_BUFFER_SZ_REG(pool) (0x1700 + ((pool) << 2)) ++#define MVNETA_PORT_POOL_BUFFER_SZ_SHIFT 3 ++#define MVNETA_PORT_POOL_BUFFER_SZ_MASK 0xfff8 + #define MVNETA_PORT_RX_RESET 0x1cc0 + #define MVNETA_PORT_RX_DMA_RESET BIT(0) + #define MVNETA_PHY_ADDR 0x2000 +@@ -107,6 +115,7 @@ + #define MVNETA_GMAC_CLOCK_DIVIDER 0x24f4 + #define MVNETA_GMAC_1MS_CLOCK_ENABLE BIT(31) + #define MVNETA_ACC_MODE 0x2500 ++#define MVNETA_BM_ADDRESS 0x2504 + #define MVNETA_CPU_MAP(cpu) (0x2540 + ((cpu) << 2)) + #define MVNETA_CPU_RXQ_ACCESS_ALL_MASK 0x000000ff + #define MVNETA_CPU_TXQ_ACCESS_ALL_MASK 0x0000ff00 +@@ -253,7 +262,10 @@ + #define MVNETA_CPU_D_CACHE_LINE_SIZE 32 + #define MVNETA_TX_CSUM_DEF_SIZE 1600 + #define MVNETA_TX_CSUM_MAX_SIZE 9800 +-#define MVNETA_ACC_MODE_EXT 1 ++#define MVNETA_ACC_MODE_EXT1 1 ++#define MVNETA_ACC_MODE_EXT2 2 ++ ++#define MVNETA_MAX_DECODE_WIN 6 + + /* Timeout constants */ + #define MVNETA_TX_DISABLE_TIMEOUT_MSEC 1000 +@@ -293,7 +305,8 @@ + ((addr >= txq->tso_hdrs_phys) && \ + (addr < txq->tso_hdrs_phys + txq->size * TSO_HEADER_SIZE)) + +-#define MVNETA_RX_BUF_SIZE(pkt_size) ((pkt_size) + NET_SKB_PAD) ++#define MVNETA_RX_GET_BM_POOL_ID(rxd) \ ++ (((rxd)->status & MVNETA_RXD_BM_POOL_MASK) >> MVNETA_RXD_BM_POOL_SHIFT) + + struct mvneta_statistic { + unsigned short offset; +@@ -359,6 +372,7 @@ struct mvneta_pcpu_port { + }; + + struct mvneta_port { ++ u8 id; + struct mvneta_pcpu_port __percpu *ports; + struct mvneta_pcpu_stats __percpu *stats; + +@@ -392,6 +406,11 @@ struct mvneta_port { + unsigned int tx_csum_limit; + unsigned int use_inband_status:1; + ++ struct mvneta_bm *bm_priv; ++ struct mvneta_bm_pool *pool_long; ++ struct mvneta_bm_pool *pool_short; ++ int bm_win_id; ++ + u64 ethtool_stats[ARRAY_SIZE(mvneta_statistics)]; + + u32 indir[MVNETA_RSS_LU_TABLE_SIZE]; +@@ -417,6 +436,8 @@ struct mvneta_port { + #define MVNETA_TX_L4_CSUM_NOT BIT(31) + + #define MVNETA_RXD_ERR_CRC 0x0 ++#define MVNETA_RXD_BM_POOL_SHIFT 13 ++#define MVNETA_RXD_BM_POOL_MASK (BIT(13) | BIT(14)) + #define MVNETA_RXD_ERR_SUMMARY BIT(16) + #define MVNETA_RXD_ERR_OVERRUN BIT(17) + #define MVNETA_RXD_ERR_LEN BIT(18) +@@ -561,6 +582,9 @@ static int rxq_def; + + static int rx_copybreak __read_mostly = 256; + ++/* HW BM need that each port be identify by a unique ID */ ++static int global_port_id; ++ + #define MVNETA_DRIVER_NAME "mvneta" + #define MVNETA_DRIVER_VERSION "1.0" + +@@ -827,6 +851,214 @@ static void mvneta_rxq_bm_disable(struct + mvreg_write(pp, MVNETA_RXQ_CONFIG_REG(rxq->id), val); + } + ++/* Enable buffer management (BM) */ ++static void mvneta_rxq_bm_enable(struct mvneta_port *pp, ++ struct mvneta_rx_queue *rxq) ++{ ++ u32 val; ++ ++ val = mvreg_read(pp, MVNETA_RXQ_CONFIG_REG(rxq->id)); ++ val |= MVNETA_RXQ_HW_BUF_ALLOC; ++ mvreg_write(pp, MVNETA_RXQ_CONFIG_REG(rxq->id), val); ++} ++ ++/* Notify HW about port's assignment of pool for bigger packets */ ++static void mvneta_rxq_long_pool_set(struct mvneta_port *pp, ++ struct mvneta_rx_queue *rxq) ++{ ++ u32 val; ++ ++ val = mvreg_read(pp, MVNETA_RXQ_CONFIG_REG(rxq->id)); ++ val &= ~MVNETA_RXQ_LONG_POOL_ID_MASK; ++ val |= (pp->pool_long->id << MVNETA_RXQ_LONG_POOL_ID_SHIFT); ++ ++ mvreg_write(pp, MVNETA_RXQ_CONFIG_REG(rxq->id), val); ++} ++ ++/* Notify HW about port's assignment of pool for smaller packets */ ++static void mvneta_rxq_short_pool_set(struct mvneta_port *pp, ++ struct mvneta_rx_queue *rxq) ++{ ++ u32 val; ++ ++ val = mvreg_read(pp, MVNETA_RXQ_CONFIG_REG(rxq->id)); ++ val &= ~MVNETA_RXQ_SHORT_POOL_ID_MASK; ++ val |= (pp->pool_short->id << MVNETA_RXQ_SHORT_POOL_ID_SHIFT); ++ ++ mvreg_write(pp, MVNETA_RXQ_CONFIG_REG(rxq->id), val); ++} ++ ++/* Set port's receive buffer size for assigned BM pool */ ++static inline void mvneta_bm_pool_bufsize_set(struct mvneta_port *pp, ++ int buf_size, ++ u8 pool_id) ++{ ++ u32 val; ++ ++ if (!IS_ALIGNED(buf_size, 8)) { ++ dev_warn(pp->dev->dev.parent, ++ "illegal buf_size value %d, round to %d\n", ++ buf_size, ALIGN(buf_size, 8)); ++ buf_size = ALIGN(buf_size, 8); ++ } ++ ++ val = mvreg_read(pp, MVNETA_PORT_POOL_BUFFER_SZ_REG(pool_id)); ++ val |= buf_size & MVNETA_PORT_POOL_BUFFER_SZ_MASK; ++ mvreg_write(pp, MVNETA_PORT_POOL_BUFFER_SZ_REG(pool_id), val); ++} ++ ++/* Configure MBUS window in order to enable access BM internal SRAM */ ++static int mvneta_mbus_io_win_set(struct mvneta_port *pp, u32 base, u32 wsize, ++ u8 target, u8 attr) ++{ ++ u32 win_enable, win_protect; ++ int i; ++ ++ win_enable = mvreg_read(pp, MVNETA_BASE_ADDR_ENABLE); ++ ++ if (pp->bm_win_id < 0) { ++ /* Find first not occupied window */ ++ for (i = 0; i < MVNETA_MAX_DECODE_WIN; i++) { ++ if (win_enable & (1 << i)) { ++ pp->bm_win_id = i; ++ break; ++ } ++ } ++ if (i == MVNETA_MAX_DECODE_WIN) ++ return -ENOMEM; ++ } else { ++ i = pp->bm_win_id; ++ } ++ ++ mvreg_write(pp, MVNETA_WIN_BASE(i), 0); ++ mvreg_write(pp, MVNETA_WIN_SIZE(i), 0); ++ ++ if (i < 4) ++ mvreg_write(pp, MVNETA_WIN_REMAP(i), 0); ++ ++ mvreg_write(pp, MVNETA_WIN_BASE(i), (base & 0xffff0000) | ++ (attr << 8) | target); ++ ++ mvreg_write(pp, MVNETA_WIN_SIZE(i), (wsize - 1) & 0xffff0000); ++ ++ win_protect = mvreg_read(pp, MVNETA_ACCESS_PROTECT_ENABLE); ++ win_protect |= 3 << (2 * i); ++ mvreg_write(pp, MVNETA_ACCESS_PROTECT_ENABLE, win_protect); ++ ++ win_enable &= ~(1 << i); ++ mvreg_write(pp, MVNETA_BASE_ADDR_ENABLE, win_enable); ++ ++ return 0; ++} ++ ++/* Assign and initialize pools for port. In case of fail ++ * buffer manager will remain disabled for current port. ++ */ ++static int mvneta_bm_port_init(struct platform_device *pdev, ++ struct mvneta_port *pp) ++{ ++ struct device_node *dn = pdev->dev.of_node; ++ u32 long_pool_id, short_pool_id, wsize; ++ u8 target, attr; ++ int err; ++ ++ /* Get BM window information */ ++ err = mvebu_mbus_get_io_win_info(pp->bm_priv->bppi_phys_addr, &wsize, ++ &target, &attr); ++ if (err < 0) ++ return err; ++ ++ pp->bm_win_id = -1; ++ ++ /* Open NETA -> BM window */ ++ err = mvneta_mbus_io_win_set(pp, pp->bm_priv->bppi_phys_addr, wsize, ++ target, attr); ++ if (err < 0) { ++ netdev_info(pp->dev, "fail to configure mbus window to BM\n"); ++ return err; ++ } ++ ++ if (of_property_read_u32(dn, "bm,pool-long", &long_pool_id)) { ++ netdev_info(pp->dev, "missing long pool id\n"); ++ return -EINVAL; ++ } ++ ++ /* Create port's long pool depending on mtu */ ++ pp->pool_long = mvneta_bm_pool_use(pp->bm_priv, long_pool_id, ++ MVNETA_BM_LONG, pp->id, ++ MVNETA_RX_PKT_SIZE(pp->dev->mtu)); ++ if (!pp->pool_long) { ++ netdev_info(pp->dev, "fail to obtain long pool for port\n"); ++ return -ENOMEM; ++ } ++ ++ pp->pool_long->port_map |= 1 << pp->id; ++ ++ mvneta_bm_pool_bufsize_set(pp, pp->pool_long->buf_size, ++ pp->pool_long->id); ++ ++ /* If short pool id is not defined, assume using single pool */ ++ if (of_property_read_u32(dn, "bm,pool-short", &short_pool_id)) ++ short_pool_id = long_pool_id; ++ ++ /* Create port's short pool */ ++ pp->pool_short = mvneta_bm_pool_use(pp->bm_priv, short_pool_id, ++ MVNETA_BM_SHORT, pp->id, ++ MVNETA_BM_SHORT_PKT_SIZE); ++ if (!pp->pool_short) { ++ netdev_info(pp->dev, "fail to obtain short pool for port\n"); ++ mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_long, 1 << pp->id); ++ return -ENOMEM; ++ } ++ ++ if (short_pool_id != long_pool_id) { ++ pp->pool_short->port_map |= 1 << pp->id; ++ mvneta_bm_pool_bufsize_set(pp, pp->pool_short->buf_size, ++ pp->pool_short->id); ++ } ++ ++ return 0; ++} ++ ++/* Update settings of a pool for bigger packets */ ++static void mvneta_bm_update_mtu(struct mvneta_port *pp, int mtu) ++{ ++ struct mvneta_bm_pool *bm_pool = pp->pool_long; ++ int num; ++ ++ /* Release all buffers from long pool */ ++ mvneta_bm_bufs_free(pp->bm_priv, bm_pool, 1 << pp->id); ++ if (bm_pool->buf_num) { ++ WARN(1, "cannot free all buffers in pool %d\n", ++ bm_pool->id); ++ goto bm_mtu_err; ++ } ++ ++ bm_pool->pkt_size = MVNETA_RX_PKT_SIZE(mtu); ++ bm_pool->buf_size = MVNETA_RX_BUF_SIZE(bm_pool->pkt_size); ++ bm_pool->frag_size = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + ++ SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(bm_pool->pkt_size)); ++ ++ /* Fill entire long pool */ ++ num = mvneta_bm_bufs_add(pp->bm_priv, bm_pool, bm_pool->size); ++ if (num != bm_pool->size) { ++ WARN(1, "pool %d: %d of %d allocated\n", ++ bm_pool->id, num, bm_pool->size); ++ goto bm_mtu_err; ++ } ++ mvneta_bm_pool_bufsize_set(pp, bm_pool->buf_size, bm_pool->id); ++ ++ return; ++ ++bm_mtu_err: ++ mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_long, 1 << pp->id); ++ mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_short, 1 << pp->id); ++ ++ pp->bm_priv = NULL; ++ mvreg_write(pp, MVNETA_ACC_MODE, MVNETA_ACC_MODE_EXT1); ++ netdev_info(pp->dev, "fail to update MTU, fall back to software BM\n"); ++} ++ + /* Start the Ethernet port RX and TX activity */ + static void mvneta_port_up(struct mvneta_port *pp) + { +@@ -1147,9 +1379,17 @@ static void mvneta_defaults_set(struct m + mvreg_write(pp, MVNETA_PORT_RX_RESET, 0); + + /* Set Port Acceleration Mode */ +- val = MVNETA_ACC_MODE_EXT; ++ if (pp->bm_priv) ++ /* HW buffer management + legacy parser */ ++ val = MVNETA_ACC_MODE_EXT2; ++ else ++ /* SW buffer management + legacy parser */ ++ val = MVNETA_ACC_MODE_EXT1; + mvreg_write(pp, MVNETA_ACC_MODE, val); + ++ if (pp->bm_priv) ++ mvreg_write(pp, MVNETA_BM_ADDRESS, pp->bm_priv->bppi_phys_addr); ++ + /* Update val of portCfg register accordingly with all RxQueue types */ + val = MVNETA_PORT_CONFIG_DEFL_VALUE(pp->rxq_def); + mvreg_write(pp, MVNETA_PORT_CONFIG, val); +@@ -1516,23 +1756,25 @@ static void mvneta_txq_done(struct mvnet + } + } + +-static void *mvneta_frag_alloc(const struct mvneta_port *pp) ++void *mvneta_frag_alloc(unsigned int frag_size) + { +- if (likely(pp->frag_size <= PAGE_SIZE)) +- return netdev_alloc_frag(pp->frag_size); ++ if (likely(frag_size <= PAGE_SIZE)) ++ return netdev_alloc_frag(frag_size); + else +- return kmalloc(pp->frag_size, GFP_ATOMIC); ++ return kmalloc(frag_size, GFP_ATOMIC); + } ++EXPORT_SYMBOL_GPL(mvneta_frag_alloc); + +-static void mvneta_frag_free(const struct mvneta_port *pp, void *data) ++void mvneta_frag_free(unsigned int frag_size, void *data) + { +- if (likely(pp->frag_size <= PAGE_SIZE)) ++ if (likely(frag_size <= PAGE_SIZE)) + skb_free_frag(data); + else + kfree(data); + } ++EXPORT_SYMBOL_GPL(mvneta_frag_free); + +-/* Refill processing */ ++/* Refill processing for SW buffer management */ + static int mvneta_rx_refill(struct mvneta_port *pp, + struct mvneta_rx_desc *rx_desc) + +@@ -1540,7 +1782,7 @@ static int mvneta_rx_refill(struct mvnet + dma_addr_t phys_addr; + void *data; + +- data = mvneta_frag_alloc(pp); ++ data = mvneta_frag_alloc(pp->frag_size); + if (!data) + return -ENOMEM; + +@@ -1548,7 +1790,7 @@ static int mvneta_rx_refill(struct mvnet + MVNETA_RX_BUF_SIZE(pp->pkt_size), + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(pp->dev->dev.parent, phys_addr))) { +- mvneta_frag_free(pp, data); ++ mvneta_frag_free(pp->frag_size, data); + return -ENOMEM; + } + +@@ -1594,22 +1836,156 @@ static void mvneta_rxq_drop_pkts(struct + int rx_done, i; + + rx_done = mvneta_rxq_busy_desc_num_get(pp, rxq); ++ if (rx_done) ++ mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_done); ++ ++ if (pp->bm_priv) { ++ for (i = 0; i < rx_done; i++) { ++ struct mvneta_rx_desc *rx_desc = ++ mvneta_rxq_next_desc_get(rxq); ++ u8 pool_id = MVNETA_RX_GET_BM_POOL_ID(rx_desc); ++ struct mvneta_bm_pool *bm_pool; ++ ++ bm_pool = &pp->bm_priv->bm_pools[pool_id]; ++ /* Return dropped buffer to the pool */ ++ mvneta_bm_pool_put_bp(pp->bm_priv, bm_pool, ++ rx_desc->buf_phys_addr); ++ } ++ return; ++ } ++ + for (i = 0; i < rxq->size; i++) { + struct mvneta_rx_desc *rx_desc = rxq->descs + i; + void *data = (void *)rx_desc->buf_cookie; + + dma_unmap_single(pp->dev->dev.parent, rx_desc->buf_phys_addr, + MVNETA_RX_BUF_SIZE(pp->pkt_size), DMA_FROM_DEVICE); +- mvneta_frag_free(pp, data); ++ mvneta_frag_free(pp->frag_size, data); + } ++} + +- if (rx_done) +- mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_done); ++/* Main rx processing when using software buffer management */ ++static int mvneta_rx_swbm(struct mvneta_port *pp, int rx_todo, ++ struct mvneta_rx_queue *rxq) ++{ ++ struct mvneta_pcpu_port *port = this_cpu_ptr(pp->ports); ++ struct net_device *dev = pp->dev; ++ int rx_done; ++ u32 rcvd_pkts = 0; ++ u32 rcvd_bytes = 0; ++ ++ /* Get number of received packets */ ++ rx_done = mvneta_rxq_busy_desc_num_get(pp, rxq); ++ ++ if (rx_todo > rx_done) ++ rx_todo = rx_done; ++ ++ rx_done = 0; ++ ++ /* Fairness NAPI loop */ ++ while (rx_done < rx_todo) { ++ struct mvneta_rx_desc *rx_desc = mvneta_rxq_next_desc_get(rxq); ++ struct sk_buff *skb; ++ unsigned char *data; ++ dma_addr_t phys_addr; ++ u32 rx_status, frag_size; ++ int rx_bytes, err; ++ ++ rx_done++; ++ rx_status = rx_desc->status; ++ rx_bytes = rx_desc->data_size - (ETH_FCS_LEN + MVNETA_MH_SIZE); ++ data = (unsigned char *)rx_desc->buf_cookie; ++ phys_addr = rx_desc->buf_phys_addr; ++ ++ if (!mvneta_rxq_desc_is_first_last(rx_status) || ++ (rx_status & MVNETA_RXD_ERR_SUMMARY)) { ++err_drop_frame: ++ dev->stats.rx_errors++; ++ mvneta_rx_error(pp, rx_desc); ++ /* leave the descriptor untouched */ ++ continue; ++ } ++ ++ if (rx_bytes <= rx_copybreak) { ++ /* better copy a small frame and not unmap the DMA region */ ++ skb = netdev_alloc_skb_ip_align(dev, rx_bytes); ++ if (unlikely(!skb)) ++ goto err_drop_frame; ++ ++ dma_sync_single_range_for_cpu(dev->dev.parent, ++ rx_desc->buf_phys_addr, ++ MVNETA_MH_SIZE + NET_SKB_PAD, ++ rx_bytes, ++ DMA_FROM_DEVICE); ++ memcpy(skb_put(skb, rx_bytes), ++ data + MVNETA_MH_SIZE + NET_SKB_PAD, ++ rx_bytes); ++ ++ skb->protocol = eth_type_trans(skb, dev); ++ mvneta_rx_csum(pp, rx_status, skb); ++ napi_gro_receive(&port->napi, skb); ++ ++ rcvd_pkts++; ++ rcvd_bytes += rx_bytes; ++ ++ /* leave the descriptor and buffer untouched */ ++ continue; ++ } ++ ++ /* Refill processing */ ++ err = mvneta_rx_refill(pp, rx_desc); ++ if (err) { ++ netdev_err(dev, "Linux processing - Can't refill\n"); ++ rxq->missed++; ++ goto err_drop_frame; ++ } ++ ++ frag_size = pp->frag_size; ++ ++ skb = build_skb(data, frag_size > PAGE_SIZE ? 0 : frag_size); ++ ++ /* After refill old buffer has to be unmapped regardless ++ * the skb is successfully built or not. ++ */ ++ dma_unmap_single(dev->dev.parent, phys_addr, ++ MVNETA_RX_BUF_SIZE(pp->pkt_size), ++ DMA_FROM_DEVICE); ++ ++ if (!skb) ++ goto err_drop_frame; ++ ++ rcvd_pkts++; ++ rcvd_bytes += rx_bytes; ++ ++ /* Linux processing */ ++ skb_reserve(skb, MVNETA_MH_SIZE + NET_SKB_PAD); ++ skb_put(skb, rx_bytes); ++ ++ skb->protocol = eth_type_trans(skb, dev); ++ ++ mvneta_rx_csum(pp, rx_status, skb); ++ ++ napi_gro_receive(&port->napi, skb); ++ } ++ ++ if (rcvd_pkts) { ++ struct mvneta_pcpu_stats *stats = this_cpu_ptr(pp->stats); ++ ++ u64_stats_update_begin(&stats->syncp); ++ stats->rx_packets += rcvd_pkts; ++ stats->rx_bytes += rcvd_bytes; ++ u64_stats_update_end(&stats->syncp); ++ } ++ ++ /* Update rxq management counters */ ++ mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_done); ++ ++ return rx_done; + } + +-/* Main rx processing */ +-static int mvneta_rx(struct mvneta_port *pp, int rx_todo, +- struct mvneta_rx_queue *rxq) ++/* Main rx processing when using hardware buffer management */ ++static int mvneta_rx_hwbm(struct mvneta_port *pp, int rx_todo, ++ struct mvneta_rx_queue *rxq) + { + struct mvneta_pcpu_port *port = this_cpu_ptr(pp->ports); + struct net_device *dev = pp->dev; +@@ -1628,21 +2004,29 @@ static int mvneta_rx(struct mvneta_port + /* Fairness NAPI loop */ + while (rx_done < rx_todo) { + struct mvneta_rx_desc *rx_desc = mvneta_rxq_next_desc_get(rxq); ++ struct mvneta_bm_pool *bm_pool = NULL; + struct sk_buff *skb; + unsigned char *data; + dma_addr_t phys_addr; +- u32 rx_status; ++ u32 rx_status, frag_size; + int rx_bytes, err; ++ u8 pool_id; + + rx_done++; + rx_status = rx_desc->status; + rx_bytes = rx_desc->data_size - (ETH_FCS_LEN + MVNETA_MH_SIZE); + data = (unsigned char *)rx_desc->buf_cookie; + phys_addr = rx_desc->buf_phys_addr; ++ pool_id = MVNETA_RX_GET_BM_POOL_ID(rx_desc); ++ bm_pool = &pp->bm_priv->bm_pools[pool_id]; + + if (!mvneta_rxq_desc_is_first_last(rx_status) || + (rx_status & MVNETA_RXD_ERR_SUMMARY)) { +- err_drop_frame: ++err_drop_frame_ret_pool: ++ /* Return the buffer to the pool */ ++ mvneta_bm_pool_put_bp(pp->bm_priv, bm_pool, ++ rx_desc->buf_phys_addr); ++err_drop_frame: + dev->stats.rx_errors++; + mvneta_rx_error(pp, rx_desc); + /* leave the descriptor untouched */ +@@ -1653,7 +2037,7 @@ static int mvneta_rx(struct mvneta_port + /* better copy a small frame and not unmap the DMA region */ + skb = netdev_alloc_skb_ip_align(dev, rx_bytes); + if (unlikely(!skb)) +- goto err_drop_frame; ++ goto err_drop_frame_ret_pool; + + dma_sync_single_range_for_cpu(dev->dev.parent, + rx_desc->buf_phys_addr, +@@ -1671,26 +2055,31 @@ static int mvneta_rx(struct mvneta_port + rcvd_pkts++; + rcvd_bytes += rx_bytes; + ++ /* Return the buffer to the pool */ ++ mvneta_bm_pool_put_bp(pp->bm_priv, bm_pool, ++ rx_desc->buf_phys_addr); ++ + /* leave the descriptor and buffer untouched */ + continue; + } + + /* Refill processing */ +- err = mvneta_rx_refill(pp, rx_desc); ++ err = mvneta_bm_pool_refill(pp->bm_priv, bm_pool); + if (err) { + netdev_err(dev, "Linux processing - Can't refill\n"); + rxq->missed++; +- goto err_drop_frame; ++ goto err_drop_frame_ret_pool; + } + +- skb = build_skb(data, pp->frag_size > PAGE_SIZE ? 0 : pp->frag_size); ++ frag_size = bm_pool->frag_size; ++ ++ skb = build_skb(data, frag_size > PAGE_SIZE ? 0 : frag_size); + + /* After refill old buffer has to be unmapped regardless + * the skb is successfully built or not. + */ +- dma_unmap_single(dev->dev.parent, phys_addr, +- MVNETA_RX_BUF_SIZE(pp->pkt_size), DMA_FROM_DEVICE); +- ++ dma_unmap_single(&pp->bm_priv->pdev->dev, phys_addr, ++ bm_pool->buf_size, DMA_FROM_DEVICE); + if (!skb) + goto err_drop_frame; + +@@ -2295,7 +2684,10 @@ static int mvneta_poll(struct napi_struc + + if (rx_queue) { + rx_queue = rx_queue - 1; +- rx_done = mvneta_rx(pp, budget, &pp->rxqs[rx_queue]); ++ if (pp->bm_priv) ++ rx_done = mvneta_rx_hwbm(pp, budget, &pp->rxqs[rx_queue]); ++ else ++ rx_done = mvneta_rx_swbm(pp, budget, &pp->rxqs[rx_queue]); + } + + budget -= rx_done; +@@ -2384,9 +2776,17 @@ static int mvneta_rxq_init(struct mvneta + mvneta_rx_pkts_coal_set(pp, rxq, rxq->pkts_coal); + mvneta_rx_time_coal_set(pp, rxq, rxq->time_coal); + +- /* Fill RXQ with buffers from RX pool */ +- mvneta_rxq_buf_size_set(pp, rxq, MVNETA_RX_BUF_SIZE(pp->pkt_size)); +- mvneta_rxq_bm_disable(pp, rxq); ++ if (!pp->bm_priv) { ++ /* Fill RXQ with buffers from RX pool */ ++ mvneta_rxq_buf_size_set(pp, rxq, ++ MVNETA_RX_BUF_SIZE(pp->pkt_size)); ++ mvneta_rxq_bm_disable(pp, rxq); ++ } else { ++ mvneta_rxq_bm_enable(pp, rxq); ++ mvneta_rxq_long_pool_set(pp, rxq); ++ mvneta_rxq_short_pool_set(pp, rxq); ++ } ++ + mvneta_rxq_fill(pp, rxq, rxq->size); + + return 0; +@@ -2659,6 +3059,9 @@ static int mvneta_change_mtu(struct net_ + dev->mtu = mtu; + + if (!netif_running(dev)) { ++ if (pp->bm_priv) ++ mvneta_bm_update_mtu(pp, mtu); ++ + netdev_update_features(dev); + return 0; + } +@@ -2671,6 +3074,9 @@ static int mvneta_change_mtu(struct net_ + mvneta_cleanup_txqs(pp); + mvneta_cleanup_rxqs(pp); + ++ if (pp->bm_priv) ++ mvneta_bm_update_mtu(pp, mtu); ++ + pp->pkt_size = MVNETA_RX_PKT_SIZE(dev->mtu); + pp->frag_size = SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(pp->pkt_size)) + + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); +@@ -3563,6 +3969,7 @@ static int mvneta_probe(struct platform_ + struct resource *res; + struct device_node *dn = pdev->dev.of_node; + struct device_node *phy_node; ++ struct device_node *bm_node; + struct mvneta_port *pp; + struct net_device *dev; + const char *dt_mac_addr; +@@ -3690,26 +4097,39 @@ static int mvneta_probe(struct platform_ + + pp->tx_csum_limit = tx_csum_limit; + ++ dram_target_info = mv_mbus_dram_info(); ++ if (dram_target_info) ++ mvneta_conf_mbus_windows(pp, dram_target_info); ++ + pp->tx_ring_size = MVNETA_MAX_TXD; + pp->rx_ring_size = MVNETA_MAX_RXD; + + pp->dev = dev; + SET_NETDEV_DEV(dev, &pdev->dev); + ++ pp->id = global_port_id++; ++ ++ /* Obtain access to BM resources if enabled and already initialized */ ++ bm_node = of_parse_phandle(dn, "buffer-manager", 0); ++ if (bm_node && bm_node->data) { ++ pp->bm_priv = bm_node->data; ++ err = mvneta_bm_port_init(pdev, pp); ++ if (err < 0) { ++ dev_info(&pdev->dev, "use SW buffer management\n"); ++ pp->bm_priv = NULL; ++ } ++ } ++ + err = mvneta_init(&pdev->dev, pp); + if (err < 0) +- goto err_free_stats; ++ goto err_netdev; + + err = mvneta_port_power_up(pp, phy_mode); + if (err < 0) { + dev_err(&pdev->dev, "can't power up port\n"); +- goto err_free_stats; ++ goto err_netdev; + } + +- dram_target_info = mv_mbus_dram_info(); +- if (dram_target_info) +- mvneta_conf_mbus_windows(pp, dram_target_info); +- + for_each_present_cpu(cpu) { + struct mvneta_pcpu_port *port = per_cpu_ptr(pp->ports, cpu); + +@@ -3744,6 +4164,13 @@ static int mvneta_probe(struct platform_ + + return 0; + ++err_netdev: ++ unregister_netdev(dev); ++ if (pp->bm_priv) { ++ mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_long, 1 << pp->id); ++ mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_short, ++ 1 << pp->id); ++ } + err_free_stats: + free_percpu(pp->stats); + err_free_ports: +@@ -3773,6 +4200,12 @@ static int mvneta_remove(struct platform + of_node_put(pp->phy_node); + free_netdev(dev); + ++ if (pp->bm_priv) { ++ mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_long, 1 << pp->id); ++ mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_short, ++ 1 << pp->id); ++ } ++ + return 0; + } + +--- /dev/null ++++ b/drivers/net/ethernet/marvell/mvneta_bm.c +@@ -0,0 +1,546 @@ ++/* ++ * Driver for Marvell NETA network controller Buffer Manager. ++ * ++ * Copyright (C) 2015 Marvell ++ * ++ * Marcin Wojtas <mw@semihalf.com> ++ * ++ * This file is licensed under the terms of the GNU General Public ++ * License version 2. This program is licensed "as is" without any ++ * warranty of any kind, whether express or implied. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/genalloc.h> ++#include <linux/platform_device.h> ++#include <linux/netdevice.h> ++#include <linux/skbuff.h> ++#include <linux/mbus.h> ++#include <linux/module.h> ++#include <linux/io.h> ++#include <linux/of.h> ++#include <linux/clk.h> ++#include "mvneta_bm.h" ++ ++#define MVNETA_BM_DRIVER_NAME "mvneta_bm" ++#define MVNETA_BM_DRIVER_VERSION "1.0" ++ ++static void mvneta_bm_write(struct mvneta_bm *priv, u32 offset, u32 data) ++{ ++ writel(data, priv->reg_base + offset); ++} ++ ++static u32 mvneta_bm_read(struct mvneta_bm *priv, u32 offset) ++{ ++ return readl(priv->reg_base + offset); ++} ++ ++static void mvneta_bm_pool_enable(struct mvneta_bm *priv, int pool_id) ++{ ++ u32 val; ++ ++ val = mvneta_bm_read(priv, MVNETA_BM_POOL_BASE_REG(pool_id)); ++ val |= MVNETA_BM_POOL_ENABLE_MASK; ++ mvneta_bm_write(priv, MVNETA_BM_POOL_BASE_REG(pool_id), val); ++ ++ /* Clear BM cause register */ ++ mvneta_bm_write(priv, MVNETA_BM_INTR_CAUSE_REG, 0); ++} ++ ++static void mvneta_bm_pool_disable(struct mvneta_bm *priv, int pool_id) ++{ ++ u32 val; ++ ++ val = mvneta_bm_read(priv, MVNETA_BM_POOL_BASE_REG(pool_id)); ++ val &= ~MVNETA_BM_POOL_ENABLE_MASK; ++ mvneta_bm_write(priv, MVNETA_BM_POOL_BASE_REG(pool_id), val); ++} ++ ++static inline void mvneta_bm_config_set(struct mvneta_bm *priv, u32 mask) ++{ ++ u32 val; ++ ++ val = mvneta_bm_read(priv, MVNETA_BM_CONFIG_REG); ++ val |= mask; ++ mvneta_bm_write(priv, MVNETA_BM_CONFIG_REG, val); ++} ++ ++static inline void mvneta_bm_config_clear(struct mvneta_bm *priv, u32 mask) ++{ ++ u32 val; ++ ++ val = mvneta_bm_read(priv, MVNETA_BM_CONFIG_REG); ++ val &= ~mask; ++ mvneta_bm_write(priv, MVNETA_BM_CONFIG_REG, val); ++} ++ ++static void mvneta_bm_pool_target_set(struct mvneta_bm *priv, int pool_id, ++ u8 target_id, u8 attr) ++{ ++ u32 val; ++ ++ val = mvneta_bm_read(priv, MVNETA_BM_XBAR_POOL_REG(pool_id)); ++ val &= ~MVNETA_BM_TARGET_ID_MASK(pool_id); ++ val &= ~MVNETA_BM_XBAR_ATTR_MASK(pool_id); ++ val |= MVNETA_BM_TARGET_ID_VAL(pool_id, target_id); ++ val |= MVNETA_BM_XBAR_ATTR_VAL(pool_id, attr); ++ ++ mvneta_bm_write(priv, MVNETA_BM_XBAR_POOL_REG(pool_id), val); ++} ++ ++/* Allocate skb for BM pool */ ++void *mvneta_buf_alloc(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, ++ dma_addr_t *buf_phys_addr) ++{ ++ void *buf; ++ dma_addr_t phys_addr; ++ ++ buf = mvneta_frag_alloc(bm_pool->frag_size); ++ if (!buf) ++ return NULL; ++ ++ /* In order to update buf_cookie field of RX descriptor properly, ++ * BM hardware expects buf virtual address to be placed in the ++ * first four bytes of mapped buffer. ++ */ ++ *(u32 *)buf = (u32)buf; ++ phys_addr = dma_map_single(&priv->pdev->dev, buf, bm_pool->buf_size, ++ DMA_FROM_DEVICE); ++ if (unlikely(dma_mapping_error(&priv->pdev->dev, phys_addr))) { ++ mvneta_frag_free(bm_pool->frag_size, buf); ++ return NULL; ++ } ++ *buf_phys_addr = phys_addr; ++ ++ return buf; ++} ++ ++/* Refill processing for HW buffer management */ ++int mvneta_bm_pool_refill(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool) ++{ ++ dma_addr_t buf_phys_addr; ++ void *buf; ++ ++ buf = mvneta_buf_alloc(priv, bm_pool, &buf_phys_addr); ++ if (!buf) ++ return -ENOMEM; ++ ++ mvneta_bm_pool_put_bp(priv, bm_pool, buf_phys_addr); ++ ++ return 0; ++} ++EXPORT_SYMBOL_GPL(mvneta_bm_pool_refill); ++ ++/* Allocate buffers for the pool */ ++int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, ++ int buf_num) ++{ ++ int err, i; ++ ++ if (bm_pool->buf_num == bm_pool->size) { ++ dev_dbg(&priv->pdev->dev, "pool %d already filled\n", ++ bm_pool->id); ++ return bm_pool->buf_num; ++ } ++ ++ if (buf_num < 0 || ++ (buf_num + bm_pool->buf_num > bm_pool->size)) { ++ dev_err(&priv->pdev->dev, ++ "cannot allocate %d buffers for pool %d\n", ++ buf_num, bm_pool->id); ++ return 0; ++ } ++ ++ for (i = 0; i < buf_num; i++) { ++ err = mvneta_bm_pool_refill(priv, bm_pool); ++ if (err < 0) ++ break; ++ } ++ ++ /* Update BM driver with number of buffers added to pool */ ++ bm_pool->buf_num += i; ++ ++ dev_dbg(&priv->pdev->dev, ++ "%s pool %d: pkt_size=%4d, buf_size=%4d, frag_size=%4d\n", ++ bm_pool->type == MVNETA_BM_SHORT ? "short" : "long", ++ bm_pool->id, bm_pool->pkt_size, bm_pool->buf_size, ++ bm_pool->frag_size); ++ ++ dev_dbg(&priv->pdev->dev, ++ "%s pool %d: %d of %d buffers added\n", ++ bm_pool->type == MVNETA_BM_SHORT ? "short" : "long", ++ bm_pool->id, i, buf_num); ++ ++ return i; ++} ++EXPORT_SYMBOL_GPL(mvneta_bm_bufs_add); ++ ++/* Create pool */ ++static int mvneta_bm_pool_create(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool) ++{ ++ struct platform_device *pdev = priv->pdev; ++ u8 target_id, attr; ++ int size_bytes, err; ++ ++ size_bytes = sizeof(u32) * bm_pool->size; ++ bm_pool->virt_addr = dma_alloc_coherent(&pdev->dev, size_bytes, ++ &bm_pool->phys_addr, ++ GFP_KERNEL); ++ if (!bm_pool->virt_addr) ++ return -ENOMEM; ++ ++ if (!IS_ALIGNED((u32)bm_pool->virt_addr, MVNETA_BM_POOL_PTR_ALIGN)) { ++ dma_free_coherent(&pdev->dev, size_bytes, bm_pool->virt_addr, ++ bm_pool->phys_addr); ++ dev_err(&pdev->dev, "BM pool %d is not %d bytes aligned\n", ++ bm_pool->id, MVNETA_BM_POOL_PTR_ALIGN); ++ return -ENOMEM; ++ } ++ ++ err = mvebu_mbus_get_dram_win_info(bm_pool->phys_addr, &target_id, ++ &attr); ++ if (err < 0) { ++ dma_free_coherent(&pdev->dev, size_bytes, bm_pool->virt_addr, ++ bm_pool->phys_addr); ++ return err; ++ } ++ ++ /* Set pool address */ ++ mvneta_bm_write(priv, MVNETA_BM_POOL_BASE_REG(bm_pool->id), ++ bm_pool->phys_addr); ++ ++ mvneta_bm_pool_target_set(priv, bm_pool->id, target_id, attr); ++ mvneta_bm_pool_enable(priv, bm_pool->id); ++ ++ return 0; ++} ++ ++/* Notify the driver that BM pool is being used as specific type and return the ++ * pool pointer on success ++ */ ++struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, ++ enum mvneta_bm_type type, u8 port_id, ++ int pkt_size) ++{ ++ struct mvneta_bm_pool *new_pool = &priv->bm_pools[pool_id]; ++ int num, err; ++ ++ if (new_pool->type == MVNETA_BM_LONG && ++ new_pool->port_map != 1 << port_id) { ++ dev_err(&priv->pdev->dev, ++ "long pool cannot be shared by the ports\n"); ++ return NULL; ++ } ++ ++ if (new_pool->type == MVNETA_BM_SHORT && new_pool->type != type) { ++ dev_err(&priv->pdev->dev, ++ "mixing pools' types between the ports is forbidden\n"); ++ return NULL; ++ } ++ ++ if (new_pool->pkt_size == 0 || type != MVNETA_BM_SHORT) ++ new_pool->pkt_size = pkt_size; ++ ++ /* Allocate buffers in case BM pool hasn't been used yet */ ++ if (new_pool->type == MVNETA_BM_FREE) { ++ new_pool->type = type; ++ new_pool->buf_size = MVNETA_RX_BUF_SIZE(new_pool->pkt_size); ++ new_pool->frag_size = ++ SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(new_pool->pkt_size)) + ++ SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); ++ ++ /* Create new pool */ ++ err = mvneta_bm_pool_create(priv, new_pool); ++ if (err) { ++ dev_err(&priv->pdev->dev, "fail to create pool %d\n", ++ new_pool->id); ++ return NULL; ++ } ++ ++ /* Allocate buffers for this pool */ ++ num = mvneta_bm_bufs_add(priv, new_pool, new_pool->size); ++ if (num != new_pool->size) { ++ WARN(1, "pool %d: %d of %d allocated\n", ++ new_pool->id, num, new_pool->size); ++ return NULL; ++ } ++ } ++ ++ return new_pool; ++} ++EXPORT_SYMBOL_GPL(mvneta_bm_pool_use); ++ ++/* Free all buffers from the pool */ ++void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, ++ u8 port_map) ++{ ++ int i; ++ ++ bm_pool->port_map &= ~port_map; ++ if (bm_pool->port_map) ++ return; ++ ++ mvneta_bm_config_set(priv, MVNETA_BM_EMPTY_LIMIT_MASK); ++ ++ for (i = 0; i < bm_pool->buf_num; i++) { ++ dma_addr_t buf_phys_addr; ++ u32 *vaddr; ++ ++ /* Get buffer physical address (indirect access) */ ++ buf_phys_addr = mvneta_bm_pool_get_bp(priv, bm_pool); ++ ++ /* Work-around to the problems when destroying the pool, ++ * when it occurs that a read access to BPPI returns 0. ++ */ ++ if (buf_phys_addr == 0) ++ continue; ++ ++ vaddr = phys_to_virt(buf_phys_addr); ++ if (!vaddr) ++ break; ++ ++ dma_unmap_single(&priv->pdev->dev, buf_phys_addr, ++ bm_pool->buf_size, DMA_FROM_DEVICE); ++ mvneta_frag_free(bm_pool->frag_size, vaddr); ++ } ++ ++ mvneta_bm_config_clear(priv, MVNETA_BM_EMPTY_LIMIT_MASK); ++ ++ /* Update BM driver with number of buffers removed from pool */ ++ bm_pool->buf_num -= i; ++} ++EXPORT_SYMBOL_GPL(mvneta_bm_bufs_free); ++ ++/* Cleanup pool */ ++void mvneta_bm_pool_destroy(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool, u8 port_map) ++{ ++ bm_pool->port_map &= ~port_map; ++ if (bm_pool->port_map) ++ return; ++ ++ bm_pool->type = MVNETA_BM_FREE; ++ ++ mvneta_bm_bufs_free(priv, bm_pool, port_map); ++ if (bm_pool->buf_num) ++ WARN(1, "cannot free all buffers in pool %d\n", bm_pool->id); ++ ++ if (bm_pool->virt_addr) { ++ dma_free_coherent(&priv->pdev->dev, sizeof(u32) * bm_pool->size, ++ bm_pool->virt_addr, bm_pool->phys_addr); ++ bm_pool->virt_addr = NULL; ++ } ++ ++ mvneta_bm_pool_disable(priv, bm_pool->id); ++} ++EXPORT_SYMBOL_GPL(mvneta_bm_pool_destroy); ++ ++static void mvneta_bm_pools_init(struct mvneta_bm *priv) ++{ ++ struct device_node *dn = priv->pdev->dev.of_node; ++ struct mvneta_bm_pool *bm_pool; ++ char prop[15]; ++ u32 size; ++ int i; ++ ++ /* Activate BM unit */ ++ mvneta_bm_write(priv, MVNETA_BM_COMMAND_REG, MVNETA_BM_START_MASK); ++ ++ /* Create all pools with maximum size */ ++ for (i = 0; i < MVNETA_BM_POOLS_NUM; i++) { ++ bm_pool = &priv->bm_pools[i]; ++ bm_pool->id = i; ++ bm_pool->type = MVNETA_BM_FREE; ++ ++ /* Reset read pointer */ ++ mvneta_bm_write(priv, MVNETA_BM_POOL_READ_PTR_REG(i), 0); ++ ++ /* Reset write pointer */ ++ mvneta_bm_write(priv, MVNETA_BM_POOL_WRITE_PTR_REG(i), 0); ++ ++ /* Configure pool size according to DT or use default value */ ++ sprintf(prop, "pool%d,capacity", i); ++ if (of_property_read_u32(dn, prop, &size)) { ++ size = MVNETA_BM_POOL_CAP_DEF; ++ } else if (size > MVNETA_BM_POOL_CAP_MAX) { ++ dev_warn(&priv->pdev->dev, ++ "Illegal pool %d capacity %d, set to %d\n", ++ i, size, MVNETA_BM_POOL_CAP_MAX); ++ size = MVNETA_BM_POOL_CAP_MAX; ++ } else if (size < MVNETA_BM_POOL_CAP_MIN) { ++ dev_warn(&priv->pdev->dev, ++ "Illegal pool %d capacity %d, set to %d\n", ++ i, size, MVNETA_BM_POOL_CAP_MIN); ++ size = MVNETA_BM_POOL_CAP_MIN; ++ } else if (!IS_ALIGNED(size, MVNETA_BM_POOL_CAP_ALIGN)) { ++ dev_warn(&priv->pdev->dev, ++ "Illegal pool %d capacity %d, round to %d\n", ++ i, size, ALIGN(size, ++ MVNETA_BM_POOL_CAP_ALIGN)); ++ size = ALIGN(size, MVNETA_BM_POOL_CAP_ALIGN); ++ } ++ bm_pool->size = size; ++ ++ mvneta_bm_write(priv, MVNETA_BM_POOL_SIZE_REG(i), ++ bm_pool->size); ++ ++ /* Obtain custom pkt_size from DT */ ++ sprintf(prop, "pool%d,pkt-size", i); ++ if (of_property_read_u32(dn, prop, &bm_pool->pkt_size)) ++ bm_pool->pkt_size = 0; ++ } ++} ++ ++static void mvneta_bm_default_set(struct mvneta_bm *priv) ++{ ++ u32 val; ++ ++ /* Mask BM all interrupts */ ++ mvneta_bm_write(priv, MVNETA_BM_INTR_MASK_REG, 0); ++ ++ /* Clear BM cause register */ ++ mvneta_bm_write(priv, MVNETA_BM_INTR_CAUSE_REG, 0); ++ ++ /* Set BM configuration register */ ++ val = mvneta_bm_read(priv, MVNETA_BM_CONFIG_REG); ++ ++ /* Reduce MaxInBurstSize from 32 BPs to 16 BPs */ ++ val &= ~MVNETA_BM_MAX_IN_BURST_SIZE_MASK; ++ val |= MVNETA_BM_MAX_IN_BURST_SIZE_16BP; ++ mvneta_bm_write(priv, MVNETA_BM_CONFIG_REG, val); ++} ++ ++static int mvneta_bm_init(struct mvneta_bm *priv) ++{ ++ mvneta_bm_default_set(priv); ++ ++ /* Allocate and initialize BM pools structures */ ++ priv->bm_pools = devm_kcalloc(&priv->pdev->dev, MVNETA_BM_POOLS_NUM, ++ sizeof(struct mvneta_bm_pool), ++ GFP_KERNEL); ++ if (!priv->bm_pools) ++ return -ENOMEM; ++ ++ mvneta_bm_pools_init(priv); ++ ++ return 0; ++} ++ ++static int mvneta_bm_get_sram(struct device_node *dn, ++ struct mvneta_bm *priv) ++{ ++ priv->bppi_pool = of_gen_pool_get(dn, "internal-mem", 0); ++ if (!priv->bppi_pool) ++ return -ENOMEM; ++ ++ priv->bppi_virt_addr = gen_pool_dma_alloc(priv->bppi_pool, ++ MVNETA_BM_BPPI_SIZE, ++ &priv->bppi_phys_addr); ++ if (!priv->bppi_virt_addr) ++ return -ENOMEM; ++ ++ return 0; ++} ++ ++static void mvneta_bm_put_sram(struct mvneta_bm *priv) ++{ ++ gen_pool_free(priv->bppi_pool, priv->bppi_phys_addr, ++ MVNETA_BM_BPPI_SIZE); ++} ++ ++static int mvneta_bm_probe(struct platform_device *pdev) ++{ ++ struct device_node *dn = pdev->dev.of_node; ++ struct mvneta_bm *priv; ++ struct resource *res; ++ int err; ++ ++ priv = devm_kzalloc(&pdev->dev, sizeof(struct mvneta_bm), GFP_KERNEL); ++ if (!priv) ++ return -ENOMEM; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ priv->reg_base = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(priv->reg_base)) ++ return PTR_ERR(priv->reg_base); ++ ++ priv->clk = devm_clk_get(&pdev->dev, NULL); ++ if (IS_ERR(priv->clk)) ++ return PTR_ERR(priv->clk); ++ err = clk_prepare_enable(priv->clk); ++ if (err < 0) ++ return err; ++ ++ err = mvneta_bm_get_sram(dn, priv); ++ if (err < 0) { ++ dev_err(&pdev->dev, "failed to allocate internal memory\n"); ++ goto err_clk; ++ } ++ ++ priv->pdev = pdev; ++ ++ /* Initialize buffer manager internals */ ++ err = mvneta_bm_init(priv); ++ if (err < 0) { ++ dev_err(&pdev->dev, "failed to initialize controller\n"); ++ goto err_sram; ++ } ++ ++ dn->data = priv; ++ platform_set_drvdata(pdev, priv); ++ ++ dev_info(&pdev->dev, "Buffer Manager for network controller enabled\n"); ++ ++ return 0; ++ ++err_sram: ++ mvneta_bm_put_sram(priv); ++err_clk: ++ clk_disable_unprepare(priv->clk); ++ return err; ++} ++ ++static int mvneta_bm_remove(struct platform_device *pdev) ++{ ++ struct mvneta_bm *priv = platform_get_drvdata(pdev); ++ u8 all_ports_map = 0xff; ++ int i = 0; ++ ++ for (i = 0; i < MVNETA_BM_POOLS_NUM; i++) { ++ struct mvneta_bm_pool *bm_pool = &priv->bm_pools[i]; ++ ++ mvneta_bm_pool_destroy(priv, bm_pool, all_ports_map); ++ } ++ ++ mvneta_bm_put_sram(priv); ++ ++ /* Dectivate BM unit */ ++ mvneta_bm_write(priv, MVNETA_BM_COMMAND_REG, MVNETA_BM_STOP_MASK); ++ ++ clk_disable_unprepare(priv->clk); ++ ++ return 0; ++} ++ ++static const struct of_device_id mvneta_bm_match[] = { ++ { .compatible = "marvell,armada-380-neta-bm" }, ++ { } ++}; ++MODULE_DEVICE_TABLE(of, mvneta_bm_match); ++ ++static struct platform_driver mvneta_bm_driver = { ++ .probe = mvneta_bm_probe, ++ .remove = mvneta_bm_remove, ++ .driver = { ++ .name = MVNETA_BM_DRIVER_NAME, ++ .of_match_table = mvneta_bm_match, ++ }, ++}; ++ ++module_platform_driver(mvneta_bm_driver); ++ ++MODULE_DESCRIPTION("Marvell NETA Buffer Manager Driver - www.marvell.com"); ++MODULE_AUTHOR("Marcin Wojtas <mw@semihalf.com>"); ++MODULE_LICENSE("GPL v2"); +--- /dev/null ++++ b/drivers/net/ethernet/marvell/mvneta_bm.h +@@ -0,0 +1,189 @@ ++/* ++ * Driver for Marvell NETA network controller Buffer Manager. ++ * ++ * Copyright (C) 2015 Marvell ++ * ++ * Marcin Wojtas <mw@semihalf.com> ++ * ++ * This file is licensed under the terms of the GNU General Public ++ * License version 2. This program is licensed "as is" without any ++ * warranty of any kind, whether express or implied. ++ */ ++ ++#ifndef _MVNETA_BM_H_ ++#define _MVNETA_BM_H_ ++ ++/* BM Configuration Register */ ++#define MVNETA_BM_CONFIG_REG 0x0 ++#define MVNETA_BM_STATUS_MASK 0x30 ++#define MVNETA_BM_ACTIVE_MASK BIT(4) ++#define MVNETA_BM_MAX_IN_BURST_SIZE_MASK 0x60000 ++#define MVNETA_BM_MAX_IN_BURST_SIZE_16BP BIT(18) ++#define MVNETA_BM_EMPTY_LIMIT_MASK BIT(19) ++ ++/* BM Activation Register */ ++#define MVNETA_BM_COMMAND_REG 0x4 ++#define MVNETA_BM_START_MASK BIT(0) ++#define MVNETA_BM_STOP_MASK BIT(1) ++#define MVNETA_BM_PAUSE_MASK BIT(2) ++ ++/* BM Xbar interface Register */ ++#define MVNETA_BM_XBAR_01_REG 0x8 ++#define MVNETA_BM_XBAR_23_REG 0xc ++#define MVNETA_BM_XBAR_POOL_REG(pool) \ ++ (((pool) < 2) ? MVNETA_BM_XBAR_01_REG : MVNETA_BM_XBAR_23_REG) ++#define MVNETA_BM_TARGET_ID_OFFS(pool) (((pool) & 1) ? 16 : 0) ++#define MVNETA_BM_TARGET_ID_MASK(pool) \ ++ (0xf << MVNETA_BM_TARGET_ID_OFFS(pool)) ++#define MVNETA_BM_TARGET_ID_VAL(pool, id) \ ++ ((id) << MVNETA_BM_TARGET_ID_OFFS(pool)) ++#define MVNETA_BM_XBAR_ATTR_OFFS(pool) (((pool) & 1) ? 20 : 4) ++#define MVNETA_BM_XBAR_ATTR_MASK(pool) \ ++ (0xff << MVNETA_BM_XBAR_ATTR_OFFS(pool)) ++#define MVNETA_BM_XBAR_ATTR_VAL(pool, attr) \ ++ ((attr) << MVNETA_BM_XBAR_ATTR_OFFS(pool)) ++ ++/* Address of External Buffer Pointers Pool Register */ ++#define MVNETA_BM_POOL_BASE_REG(pool) (0x10 + ((pool) << 4)) ++#define MVNETA_BM_POOL_ENABLE_MASK BIT(0) ++ ++/* External Buffer Pointers Pool RD pointer Register */ ++#define MVNETA_BM_POOL_READ_PTR_REG(pool) (0x14 + ((pool) << 4)) ++#define MVNETA_BM_POOL_SET_READ_PTR_MASK 0xfffc ++#define MVNETA_BM_POOL_GET_READ_PTR_OFFS 16 ++#define MVNETA_BM_POOL_GET_READ_PTR_MASK 0xfffc0000 ++ ++/* External Buffer Pointers Pool WR pointer */ ++#define MVNETA_BM_POOL_WRITE_PTR_REG(pool) (0x18 + ((pool) << 4)) ++#define MVNETA_BM_POOL_SET_WRITE_PTR_OFFS 0 ++#define MVNETA_BM_POOL_SET_WRITE_PTR_MASK 0xfffc ++#define MVNETA_BM_POOL_GET_WRITE_PTR_OFFS 16 ++#define MVNETA_BM_POOL_GET_WRITE_PTR_MASK 0xfffc0000 ++ ++/* External Buffer Pointers Pool Size Register */ ++#define MVNETA_BM_POOL_SIZE_REG(pool) (0x1c + ((pool) << 4)) ++#define MVNETA_BM_POOL_SIZE_MASK 0x3fff ++ ++/* BM Interrupt Cause Register */ ++#define MVNETA_BM_INTR_CAUSE_REG (0x50) ++ ++/* BM interrupt Mask Register */ ++#define MVNETA_BM_INTR_MASK_REG (0x54) ++ ++/* Other definitions */ ++#define MVNETA_BM_SHORT_PKT_SIZE 256 ++#define MVNETA_BM_POOLS_NUM 4 ++#define MVNETA_BM_POOL_CAP_MIN 128 ++#define MVNETA_BM_POOL_CAP_DEF 2048 ++#define MVNETA_BM_POOL_CAP_MAX \ ++ (16 * 1024 - MVNETA_BM_POOL_CAP_ALIGN) ++#define MVNETA_BM_POOL_CAP_ALIGN 32 ++#define MVNETA_BM_POOL_PTR_ALIGN 32 ++ ++#define MVNETA_BM_POOL_ACCESS_OFFS 8 ++ ++#define MVNETA_BM_BPPI_SIZE 0x100000 ++ ++#define MVNETA_RX_BUF_SIZE(pkt_size) ((pkt_size) + NET_SKB_PAD) ++ ++enum mvneta_bm_type { ++ MVNETA_BM_FREE, ++ MVNETA_BM_LONG, ++ MVNETA_BM_SHORT ++}; ++ ++struct mvneta_bm { ++ void __iomem *reg_base; ++ struct clk *clk; ++ struct platform_device *pdev; ++ ++ struct gen_pool *bppi_pool; ++ /* BPPI virtual base address */ ++ void __iomem *bppi_virt_addr; ++ /* BPPI physical base address */ ++ dma_addr_t bppi_phys_addr; ++ ++ /* BM pools */ ++ struct mvneta_bm_pool *bm_pools; ++}; ++ ++struct mvneta_bm_pool { ++ /* Pool number in the range 0-3 */ ++ u8 id; ++ enum mvneta_bm_type type; ++ ++ /* Buffer Pointers Pool External (BPPE) size in number of bytes */ ++ int size; ++ /* Number of buffers used by this pool */ ++ int buf_num; ++ /* Pool buffer size */ ++ int buf_size; ++ /* Packet size */ ++ int pkt_size; ++ /* Single frag size */ ++ u32 frag_size; ++ ++ /* BPPE virtual base address */ ++ u32 *virt_addr; ++ /* BPPE physical base address */ ++ dma_addr_t phys_addr; ++ ++ /* Ports using BM pool */ ++ u8 port_map; ++ ++ struct mvneta_bm *priv; ++}; ++ ++/* Declarations and definitions */ ++void *mvneta_frag_alloc(unsigned int frag_size); ++void mvneta_frag_free(unsigned int frag_size, void *data); ++ ++#if defined(CONFIG_MVNETA_BM) || defined(CONFIG_MVNETA_BM_MODULE) ++void mvneta_bm_pool_destroy(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool, u8 port_map); ++void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, ++ u8 port_map); ++int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, ++ int buf_num); ++int mvneta_bm_pool_refill(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool); ++struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, ++ enum mvneta_bm_type type, u8 port_id, ++ int pkt_size); ++ ++static inline void mvneta_bm_pool_put_bp(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool, ++ dma_addr_t buf_phys_addr) ++{ ++ writel_relaxed(buf_phys_addr, priv->bppi_virt_addr + ++ (bm_pool->id << MVNETA_BM_POOL_ACCESS_OFFS)); ++} ++ ++static inline u32 mvneta_bm_pool_get_bp(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool) ++{ ++ return readl_relaxed(priv->bppi_virt_addr + ++ (bm_pool->id << MVNETA_BM_POOL_ACCESS_OFFS)); ++} ++#else ++void mvneta_bm_pool_destroy(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool, u8 port_map) {} ++void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, ++ u8 port_map) {} ++int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, ++ int buf_num) { return 0; } ++int mvneta_bm_pool_refill(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool) {return 0; } ++struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, ++ enum mvneta_bm_type type, u8 port_id, ++ int pkt_size) { return NULL; } ++ ++static inline void mvneta_bm_pool_put_bp(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool, ++ dma_addr_t buf_phys_addr) {} ++ ++static inline u32 mvneta_bm_pool_get_bp(struct mvneta_bm *priv, ++ struct mvneta_bm_pool *bm_pool) ++{ return 0; } ++#endif /* CONFIG_MVNETA_BM */ ++#endif diff --git a/target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch b/target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch new file mode 100644 index 0000000000..210504c39e --- /dev/null +++ b/target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch @@ -0,0 +1,359 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Mon, 14 Mar 2016 09:39:05 +0100 +Subject: [PATCH] net: mvneta: Use the new hwbm framework + +Now that the hardware buffer management framework had been introduced, +let's use it. + +Tested-by: Sebastian Careba <nitroshift@yahoo.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/Kconfig ++++ b/drivers/net/ethernet/marvell/Kconfig +@@ -43,6 +43,7 @@ config MVMDIO + config MVNETA_BM + tristate "Marvell Armada 38x/XP network interface BM support" + depends on MVNETA ++ select HWBM + ---help--- + This driver supports auxiliary block of the network + interface units in the Marvell ARMADA XP and ARMADA 38x SoC +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -30,6 +30,7 @@ + #include <linux/phy.h> + #include <linux/platform_device.h> + #include <linux/skbuff.h> ++#include <net/hwbm.h> + #include "mvneta_bm.h" + #include <net/ip.h> + #include <net/ipv6.h> +@@ -1024,11 +1025,12 @@ static int mvneta_bm_port_init(struct pl + static void mvneta_bm_update_mtu(struct mvneta_port *pp, int mtu) + { + struct mvneta_bm_pool *bm_pool = pp->pool_long; ++ struct hwbm_pool *hwbm_pool = &bm_pool->hwbm_pool; + int num; + + /* Release all buffers from long pool */ + mvneta_bm_bufs_free(pp->bm_priv, bm_pool, 1 << pp->id); +- if (bm_pool->buf_num) { ++ if (hwbm_pool->buf_num) { + WARN(1, "cannot free all buffers in pool %d\n", + bm_pool->id); + goto bm_mtu_err; +@@ -1036,14 +1038,14 @@ static void mvneta_bm_update_mtu(struct + + bm_pool->pkt_size = MVNETA_RX_PKT_SIZE(mtu); + bm_pool->buf_size = MVNETA_RX_BUF_SIZE(bm_pool->pkt_size); +- bm_pool->frag_size = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + +- SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(bm_pool->pkt_size)); ++ hwbm_pool->frag_size = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + ++ SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(bm_pool->pkt_size)); + + /* Fill entire long pool */ +- num = mvneta_bm_bufs_add(pp->bm_priv, bm_pool, bm_pool->size); +- if (num != bm_pool->size) { ++ num = hwbm_pool_add(hwbm_pool, hwbm_pool->size, GFP_ATOMIC); ++ if (num != hwbm_pool->size) { + WARN(1, "pool %d: %d of %d allocated\n", +- bm_pool->id, num, bm_pool->size); ++ bm_pool->id, num, hwbm_pool->size); + goto bm_mtu_err; + } + mvneta_bm_pool_bufsize_set(pp, bm_pool->buf_size, bm_pool->id); +@@ -2064,14 +2066,14 @@ err_drop_frame: + } + + /* Refill processing */ +- err = mvneta_bm_pool_refill(pp->bm_priv, bm_pool); ++ err = hwbm_pool_refill(&bm_pool->hwbm_pool, GFP_ATOMIC); + if (err) { + netdev_err(dev, "Linux processing - Can't refill\n"); + rxq->missed++; + goto err_drop_frame_ret_pool; + } + +- frag_size = bm_pool->frag_size; ++ frag_size = bm_pool->hwbm_pool.frag_size; + + skb = build_skb(data, frag_size > PAGE_SIZE ? 0 : frag_size); + +--- a/drivers/net/ethernet/marvell/mvneta_bm.c ++++ b/drivers/net/ethernet/marvell/mvneta_bm.c +@@ -10,16 +10,17 @@ + * warranty of any kind, whether express or implied. + */ + +-#include <linux/kernel.h> ++#include <linux/clk.h> + #include <linux/genalloc.h> +-#include <linux/platform_device.h> +-#include <linux/netdevice.h> +-#include <linux/skbuff.h> ++#include <linux/io.h> ++#include <linux/kernel.h> + #include <linux/mbus.h> + #include <linux/module.h> +-#include <linux/io.h> ++#include <linux/netdevice.h> + #include <linux/of.h> +-#include <linux/clk.h> ++#include <linux/platform_device.h> ++#include <linux/skbuff.h> ++#include <net/hwbm.h> + #include "mvneta_bm.h" + + #define MVNETA_BM_DRIVER_NAME "mvneta_bm" +@@ -88,17 +89,13 @@ static void mvneta_bm_pool_target_set(st + mvneta_bm_write(priv, MVNETA_BM_XBAR_POOL_REG(pool_id), val); + } + +-/* Allocate skb for BM pool */ +-void *mvneta_buf_alloc(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- dma_addr_t *buf_phys_addr) ++int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf) + { +- void *buf; ++ struct mvneta_bm_pool *bm_pool = ++ (struct mvneta_bm_pool *)hwbm_pool->priv; ++ struct mvneta_bm *priv = bm_pool->priv; + dma_addr_t phys_addr; + +- buf = mvneta_frag_alloc(bm_pool->frag_size); +- if (!buf) +- return NULL; +- + /* In order to update buf_cookie field of RX descriptor properly, + * BM hardware expects buf virtual address to be placed in the + * first four bytes of mapped buffer. +@@ -106,75 +103,13 @@ void *mvneta_buf_alloc(struct mvneta_bm + *(u32 *)buf = (u32)buf; + phys_addr = dma_map_single(&priv->pdev->dev, buf, bm_pool->buf_size, + DMA_FROM_DEVICE); +- if (unlikely(dma_mapping_error(&priv->pdev->dev, phys_addr))) { +- mvneta_frag_free(bm_pool->frag_size, buf); +- return NULL; +- } +- *buf_phys_addr = phys_addr; +- +- return buf; +-} +- +-/* Refill processing for HW buffer management */ +-int mvneta_bm_pool_refill(struct mvneta_bm *priv, +- struct mvneta_bm_pool *bm_pool) +-{ +- dma_addr_t buf_phys_addr; +- void *buf; +- +- buf = mvneta_buf_alloc(priv, bm_pool, &buf_phys_addr); +- if (!buf) ++ if (unlikely(dma_mapping_error(&priv->pdev->dev, phys_addr))) + return -ENOMEM; + +- mvneta_bm_pool_put_bp(priv, bm_pool, buf_phys_addr); +- ++ mvneta_bm_pool_put_bp(priv, bm_pool, phys_addr); + return 0; + } +-EXPORT_SYMBOL_GPL(mvneta_bm_pool_refill); +- +-/* Allocate buffers for the pool */ +-int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- int buf_num) +-{ +- int err, i; +- +- if (bm_pool->buf_num == bm_pool->size) { +- dev_dbg(&priv->pdev->dev, "pool %d already filled\n", +- bm_pool->id); +- return bm_pool->buf_num; +- } +- +- if (buf_num < 0 || +- (buf_num + bm_pool->buf_num > bm_pool->size)) { +- dev_err(&priv->pdev->dev, +- "cannot allocate %d buffers for pool %d\n", +- buf_num, bm_pool->id); +- return 0; +- } +- +- for (i = 0; i < buf_num; i++) { +- err = mvneta_bm_pool_refill(priv, bm_pool); +- if (err < 0) +- break; +- } +- +- /* Update BM driver with number of buffers added to pool */ +- bm_pool->buf_num += i; +- +- dev_dbg(&priv->pdev->dev, +- "%s pool %d: pkt_size=%4d, buf_size=%4d, frag_size=%4d\n", +- bm_pool->type == MVNETA_BM_SHORT ? "short" : "long", +- bm_pool->id, bm_pool->pkt_size, bm_pool->buf_size, +- bm_pool->frag_size); +- +- dev_dbg(&priv->pdev->dev, +- "%s pool %d: %d of %d buffers added\n", +- bm_pool->type == MVNETA_BM_SHORT ? "short" : "long", +- bm_pool->id, i, buf_num); +- +- return i; +-} +-EXPORT_SYMBOL_GPL(mvneta_bm_bufs_add); ++EXPORT_SYMBOL_GPL(mvneta_bm_construct); + + /* Create pool */ + static int mvneta_bm_pool_create(struct mvneta_bm *priv, +@@ -183,8 +118,7 @@ static int mvneta_bm_pool_create(struct + struct platform_device *pdev = priv->pdev; + u8 target_id, attr; + int size_bytes, err; +- +- size_bytes = sizeof(u32) * bm_pool->size; ++ size_bytes = sizeof(u32) * bm_pool->hwbm_pool.size; + bm_pool->virt_addr = dma_alloc_coherent(&pdev->dev, size_bytes, + &bm_pool->phys_addr, + GFP_KERNEL); +@@ -245,11 +179,16 @@ struct mvneta_bm_pool *mvneta_bm_pool_us + + /* Allocate buffers in case BM pool hasn't been used yet */ + if (new_pool->type == MVNETA_BM_FREE) { ++ struct hwbm_pool *hwbm_pool = &new_pool->hwbm_pool; ++ ++ new_pool->priv = priv; + new_pool->type = type; + new_pool->buf_size = MVNETA_RX_BUF_SIZE(new_pool->pkt_size); +- new_pool->frag_size = ++ hwbm_pool->frag_size = + SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(new_pool->pkt_size)) + + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); ++ hwbm_pool->construct = mvneta_bm_construct; ++ hwbm_pool->priv = new_pool; + + /* Create new pool */ + err = mvneta_bm_pool_create(priv, new_pool); +@@ -260,10 +199,10 @@ struct mvneta_bm_pool *mvneta_bm_pool_us + } + + /* Allocate buffers for this pool */ +- num = mvneta_bm_bufs_add(priv, new_pool, new_pool->size); +- if (num != new_pool->size) { ++ num = hwbm_pool_add(hwbm_pool, hwbm_pool->size, GFP_ATOMIC); ++ if (num != hwbm_pool->size) { + WARN(1, "pool %d: %d of %d allocated\n", +- new_pool->id, num, new_pool->size); ++ new_pool->id, num, hwbm_pool->size); + return NULL; + } + } +@@ -284,7 +223,7 @@ void mvneta_bm_bufs_free(struct mvneta_b + + mvneta_bm_config_set(priv, MVNETA_BM_EMPTY_LIMIT_MASK); + +- for (i = 0; i < bm_pool->buf_num; i++) { ++ for (i = 0; i < bm_pool->hwbm_pool.buf_num; i++) { + dma_addr_t buf_phys_addr; + u32 *vaddr; + +@@ -303,13 +242,13 @@ void mvneta_bm_bufs_free(struct mvneta_b + + dma_unmap_single(&priv->pdev->dev, buf_phys_addr, + bm_pool->buf_size, DMA_FROM_DEVICE); +- mvneta_frag_free(bm_pool->frag_size, vaddr); ++ hwbm_buf_free(&bm_pool->hwbm_pool, vaddr); + } + + mvneta_bm_config_clear(priv, MVNETA_BM_EMPTY_LIMIT_MASK); + + /* Update BM driver with number of buffers removed from pool */ +- bm_pool->buf_num -= i; ++ bm_pool->hwbm_pool.buf_num -= i; + } + EXPORT_SYMBOL_GPL(mvneta_bm_bufs_free); + +@@ -317,6 +256,7 @@ EXPORT_SYMBOL_GPL(mvneta_bm_bufs_free); + void mvneta_bm_pool_destroy(struct mvneta_bm *priv, + struct mvneta_bm_pool *bm_pool, u8 port_map) + { ++ struct hwbm_pool *hwbm_pool = &bm_pool->hwbm_pool; + bm_pool->port_map &= ~port_map; + if (bm_pool->port_map) + return; +@@ -324,11 +264,12 @@ void mvneta_bm_pool_destroy(struct mvnet + bm_pool->type = MVNETA_BM_FREE; + + mvneta_bm_bufs_free(priv, bm_pool, port_map); +- if (bm_pool->buf_num) ++ if (hwbm_pool->buf_num) + WARN(1, "cannot free all buffers in pool %d\n", bm_pool->id); + + if (bm_pool->virt_addr) { +- dma_free_coherent(&priv->pdev->dev, sizeof(u32) * bm_pool->size, ++ dma_free_coherent(&priv->pdev->dev, ++ sizeof(u32) * hwbm_pool->size, + bm_pool->virt_addr, bm_pool->phys_addr); + bm_pool->virt_addr = NULL; + } +@@ -381,10 +322,10 @@ static void mvneta_bm_pools_init(struct + MVNETA_BM_POOL_CAP_ALIGN)); + size = ALIGN(size, MVNETA_BM_POOL_CAP_ALIGN); + } +- bm_pool->size = size; ++ bm_pool->hwbm_pool.size = size; + + mvneta_bm_write(priv, MVNETA_BM_POOL_SIZE_REG(i), +- bm_pool->size); ++ bm_pool->hwbm_pool.size); + + /* Obtain custom pkt_size from DT */ + sprintf(prop, "pool%d,pkt-size", i); +--- a/drivers/net/ethernet/marvell/mvneta_bm.h ++++ b/drivers/net/ethernet/marvell/mvneta_bm.h +@@ -108,20 +108,15 @@ struct mvneta_bm { + }; + + struct mvneta_bm_pool { ++ struct hwbm_pool hwbm_pool; + /* Pool number in the range 0-3 */ + u8 id; + enum mvneta_bm_type type; + +- /* Buffer Pointers Pool External (BPPE) size in number of bytes */ +- int size; +- /* Number of buffers used by this pool */ +- int buf_num; +- /* Pool buffer size */ +- int buf_size; + /* Packet size */ + int pkt_size; +- /* Single frag size */ +- u32 frag_size; ++ /* Size of the buffer acces through DMA*/ ++ u32 buf_size; + + /* BPPE virtual base address */ + u32 *virt_addr; +@@ -143,8 +138,7 @@ void mvneta_bm_pool_destroy(struct mvnet + struct mvneta_bm_pool *bm_pool, u8 port_map); + void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, + u8 port_map); +-int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- int buf_num); ++int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf); + int mvneta_bm_pool_refill(struct mvneta_bm *priv, + struct mvneta_bm_pool *bm_pool); + struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, +@@ -170,8 +164,7 @@ void mvneta_bm_pool_destroy(struct mvnet + struct mvneta_bm_pool *bm_pool, u8 port_map) {} + void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, + u8 port_map) {} +-int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- int buf_num) { return 0; } ++int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf) { return 0; } + int mvneta_bm_pool_refill(struct mvneta_bm *priv, + struct mvneta_bm_pool *bm_pool) {return 0; } + struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, diff --git a/target/linux/mvebu/patches-4.4/047-net-mvneta-Fix-spinlock-usage.patch b/target/linux/mvebu/patches-4.4/047-net-mvneta-Fix-spinlock-usage.patch new file mode 100644 index 0000000000..a8e78df2e9 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/047-net-mvneta-Fix-spinlock-usage.patch @@ -0,0 +1,52 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Sat, 12 Mar 2016 18:44:17 +0100 +Subject: [PATCH] net: mvneta: Fix spinlock usage + +In the previous patch, the spinlock was not initialized. While it didn't +cause any trouble yet it could be a problem to use it uninitialized. + +The most annoying part was the critical section protected by the spinlock +in mvneta_stop(). Some of the functions could sleep as pointed when +activated CONFIG_DEBUG_ATOMIC_SLEEP. Actually, in mvneta_stop() we only +need to protect the is_stopped flagged, indeed the code of the notifier +for CPU online is protected by the same spinlock, so when we get the +lock, the notifer work is done. + +Reported-by: Patrick Uiterwijk <patrick@puiterwijk.org> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3484,17 +3484,17 @@ static int mvneta_stop(struct net_device + struct mvneta_port *pp = netdev_priv(dev); + + /* Inform that we are stopping so we don't want to setup the +- * driver for new CPUs in the notifiers ++ * driver for new CPUs in the notifiers. The code of the ++ * notifier for CPU online is protected by the same spinlock, ++ * so when we get the lock, the notifer work is done. + */ + spin_lock(&pp->lock); + pp->is_stopped = true; ++ spin_unlock(&pp->lock); ++ + mvneta_stop_dev(pp); + mvneta_mdio_remove(pp); + unregister_cpu_notifier(&pp->cpu_notifier); +- /* Now that the notifier are unregistered, we can release le +- * lock +- */ +- spin_unlock(&pp->lock); + on_each_cpu(mvneta_percpu_disable, pp, true); + free_percpu_irq(dev->irq, pp->ports); + mvneta_cleanup_rxqs(pp); +@@ -4027,6 +4027,7 @@ static int mvneta_probe(struct platform_ + dev->ethtool_ops = &mvneta_eth_tool_ops; + + pp = netdev_priv(dev); ++ spin_lock_init(&pp->lock); + pp->phy_node = phy_node; + pp->phy_interface = phy_mode; + diff --git a/target/linux/mvebu/patches-4.4/048-net-mvneta-fix-error-messages-in-mvneta_port_down-fu.patch b/target/linux/mvebu/patches-4.4/048-net-mvneta-fix-error-messages-in-mvneta_port_down-fu.patch new file mode 100644 index 0000000000..fd1f1ae203 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/048-net-mvneta-fix-error-messages-in-mvneta_port_down-fu.patch @@ -0,0 +1,33 @@ +From: Dmitri Epshtein <dima@marvell.com> +Date: Sat, 12 Mar 2016 18:44:19 +0100 +Subject: [PATCH] net: mvneta: fix error messages in mvneta_port_down function + +This commit corrects error printing when shutting down the port. + +[gregory.clement@free-electrons.com: split initial commit in two +individual changes] +Signed-off-by: Dmitri Epshtein <dima@marvell.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -1105,7 +1105,7 @@ static void mvneta_port_down(struct mvne + do { + if (count++ >= MVNETA_RX_DISABLE_TIMEOUT_MSEC) { + netdev_warn(pp->dev, +- "TIMEOUT for RX stopped ! rx_queue_cmd: 0x08%x\n", ++ "TIMEOUT for RX stopped ! rx_queue_cmd: 0x%08x\n", + val); + break; + } +@@ -1144,7 +1144,7 @@ static void mvneta_port_down(struct mvne + do { + if (count++ >= MVNETA_TX_FIFO_EMPTY_TIMEOUT) { + netdev_warn(pp->dev, +- "TX FIFO empty timeout status=0x08%x\n", ++ "TX FIFO empty timeout status=0x%08x\n", + val); + break; + } diff --git a/target/linux/mvebu/patches-4.4/049-net-mvneta-replace-MVNETA_CPU_D_CACHE_LINE_SIZE-with.patch b/target/linux/mvebu/patches-4.4/049-net-mvneta-replace-MVNETA_CPU_D_CACHE_LINE_SIZE-with.patch new file mode 100644 index 0000000000..c12d98a4e2 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/049-net-mvneta-replace-MVNETA_CPU_D_CACHE_LINE_SIZE-with.patch @@ -0,0 +1,56 @@ +From: Jisheng Zhang <jszhang@marvell.com> +Date: Wed, 30 Mar 2016 19:55:21 +0800 +Subject: [PATCH] net: mvneta: replace MVNETA_CPU_D_CACHE_LINE_SIZE with + L1_CACHE_BYTES + +The mvneta is also used in some Marvell berlin family SoCs which may +have 64bytes cacheline size. Replace the MVNETA_CPU_D_CACHE_LINE_SIZE +usage with L1_CACHE_BYTES. + +And since dma_alloc_coherent() is always cacheline size aligned, so +remove the align checks. + +Signed-off-by: Jisheng Zhang <jszhang@marvell.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -260,7 +260,6 @@ + + #define MVNETA_VLAN_TAG_LEN 4 + +-#define MVNETA_CPU_D_CACHE_LINE_SIZE 32 + #define MVNETA_TX_CSUM_DEF_SIZE 1600 + #define MVNETA_TX_CSUM_MAX_SIZE 9800 + #define MVNETA_ACC_MODE_EXT1 1 +@@ -300,7 +299,7 @@ + #define MVNETA_RX_PKT_SIZE(mtu) \ + ALIGN((mtu) + MVNETA_MH_SIZE + MVNETA_VLAN_TAG_LEN + \ + ETH_HLEN + ETH_FCS_LEN, \ +- MVNETA_CPU_D_CACHE_LINE_SIZE) ++ L1_CACHE_BYTES) + + #define IS_TSO_HEADER(txq, addr) \ + ((addr >= txq->tso_hdrs_phys) && \ +@@ -2762,9 +2761,6 @@ static int mvneta_rxq_init(struct mvneta + if (rxq->descs == NULL) + return -ENOMEM; + +- BUG_ON(rxq->descs != +- PTR_ALIGN(rxq->descs, MVNETA_CPU_D_CACHE_LINE_SIZE)); +- + rxq->last_desc = rxq->size - 1; + + /* Set Rx descriptors queue starting address */ +@@ -2835,10 +2831,6 @@ static int mvneta_txq_init(struct mvneta + if (txq->descs == NULL) + return -ENOMEM; + +- /* Make sure descriptor address is cache line size aligned */ +- BUG_ON(txq->descs != +- PTR_ALIGN(txq->descs, MVNETA_CPU_D_CACHE_LINE_SIZE)); +- + txq->last_desc = txq->size - 1; + + /* Set maximum bandwidth for enabled TXQs */ diff --git a/target/linux/mvebu/patches-4.4/050-net-mvneta-fix-changing-MTU-when-using-per-cpu-proce.patch b/target/linux/mvebu/patches-4.4/050-net-mvneta-fix-changing-MTU-when-using-per-cpu-proce.patch new file mode 100644 index 0000000000..07862008a7 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/050-net-mvneta-fix-changing-MTU-when-using-per-cpu-proce.patch @@ -0,0 +1,75 @@ +From: Marcin Wojtas <mw@semihalf.com> +Date: Fri, 1 Apr 2016 15:21:18 +0200 +Subject: [PATCH] net: mvneta: fix changing MTU when using per-cpu processing + +After enabling per-cpu processing it appeared that under heavy load +changing MTU can result in blocking all port's interrupts and +transmitting data is not possible after the change. + +This commit fixes above issue by disabling percpu interrupts for the +time, when TXQs and RXQs are reconfigured. + +Signed-off-by: Marcin Wojtas <mw@semihalf.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3040,6 +3040,20 @@ static int mvneta_check_mtu_valid(struct + return mtu; + } + ++static void mvneta_percpu_enable(void *arg) ++{ ++ struct mvneta_port *pp = arg; ++ ++ enable_percpu_irq(pp->dev->irq, IRQ_TYPE_NONE); ++} ++ ++static void mvneta_percpu_disable(void *arg) ++{ ++ struct mvneta_port *pp = arg; ++ ++ disable_percpu_irq(pp->dev->irq); ++} ++ + /* Change the device mtu */ + static int mvneta_change_mtu(struct net_device *dev, int mtu) + { +@@ -3064,6 +3078,7 @@ static int mvneta_change_mtu(struct net_ + * reallocation of the queues + */ + mvneta_stop_dev(pp); ++ on_each_cpu(mvneta_percpu_disable, pp, true); + + mvneta_cleanup_txqs(pp); + mvneta_cleanup_rxqs(pp); +@@ -3087,6 +3102,7 @@ static int mvneta_change_mtu(struct net_ + return ret; + } + ++ on_each_cpu(mvneta_percpu_enable, pp, true); + mvneta_start_dev(pp); + mvneta_port_up(pp); + +@@ -3240,20 +3256,6 @@ static void mvneta_mdio_remove(struct mv + pp->phy_dev = NULL; + } + +-static void mvneta_percpu_enable(void *arg) +-{ +- struct mvneta_port *pp = arg; +- +- enable_percpu_irq(pp->dev->irq, IRQ_TYPE_NONE); +-} +- +-static void mvneta_percpu_disable(void *arg) +-{ +- struct mvneta_port *pp = arg; +- +- disable_percpu_irq(pp->dev->irq); +-} +- + /* Electing a CPU must be done in an atomic way: it should be done + * after or before the removal/insertion of a CPU and this function is + * not reentrant. diff --git a/target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch b/target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch new file mode 100644 index 0000000000..b56de94e3d --- /dev/null +++ b/target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch @@ -0,0 +1,53 @@ +From: Marcin Wojtas <mw@semihalf.com> +Date: Mon, 14 Mar 2016 09:38:57 +0100 +Subject: [PATCH] ARM: dts: armada-38x: add buffer manager nodes + +Armada 38x network controller supports hardware buffer management (BM). +Since it is now enabled in mvneta driver, appropriate nodes can be added +to armada-38x.dtsi - for the actual common BM unit (bm@c8000) and its +internal SRAM (bm-bppi), which is used for indirect access to buffer +pointer ring residing in DRAM. + +Pools - ports mapping, bm-bppi entry in 'soc' node's ranges and optional +parameters are supposed to be set in board files. + +Signed-off-by: Marcin Wojtas <mw@semihalf.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/arch/arm/boot/dts/armada-38x.dtsi ++++ b/arch/arm/boot/dts/armada-38x.dtsi +@@ -540,6 +540,14 @@ + status = "disabled"; + }; + ++ bm: bm@c8000 { ++ compatible = "marvell,armada-380-neta-bm"; ++ reg = <0xc8000 0xac>; ++ clocks = <&gateclk 13>; ++ internal-mem = <&bm_bppi>; ++ status = "disabled"; ++ }; ++ + sata@e0000 { + compatible = "marvell,armada-380-ahci"; + reg = <0xe0000 0x2000>; +@@ -618,6 +626,17 @@ + #size-cells = <1>; + ranges = <0 MBUS_ID(0x09, 0x15) 0 0x800>; + }; ++ ++ bm_bppi: bm-bppi { ++ compatible = "mmio-sram"; ++ reg = <MBUS_ID(0x0c, 0x04) 0 0x100000>; ++ ranges = <0 MBUS_ID(0x0c, 0x04) 0 0x100000>; ++ #address-cells = <1>; ++ #size-cells = <1>; ++ clocks = <&gateclk 13>; ++ no-memory-wc; ++ status = "disabled"; ++ }; + }; + + clocks { diff --git a/target/linux/mvebu/patches-4.4/052-ARM-dts-armada-xp-add-buffer-manager-nodes.patch b/target/linux/mvebu/patches-4.4/052-ARM-dts-armada-xp-add-buffer-manager-nodes.patch new file mode 100644 index 0000000000..65fafd7101 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/052-ARM-dts-armada-xp-add-buffer-manager-nodes.patch @@ -0,0 +1,53 @@ +From: Marcin Wojtas <mw@semihalf.com> +Date: Mon, 14 Mar 2016 09:38:59 +0100 +Subject: [PATCH] ARM: dts: armada-xp: add buffer manager nodes + +Armada XP network controller supports hardware buffer management (BM). +Since it is now enabled in mvneta driver, appropriate nodes can be added +to armada-xp.dtsi - for the actual common BM unit (bm@c0000) and its +internal SRAM (bm-bppi), which is used for indirect access to buffer +pointer ring residing in DRAM. + +Pools - ports mapping, bm-bppi entry in 'soc' node's ranges and optional +parameters are supposed to be set in board files. + +Signed-off-by: Marcin Wojtas <mw@semihalf.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/arch/arm/boot/dts/armada-xp.dtsi ++++ b/arch/arm/boot/dts/armada-xp.dtsi +@@ -253,6 +253,14 @@ + marvell,crypto-sram-size = <0x800>; + }; + ++ bm: bm@c0000 { ++ compatible = "marvell,armada-380-neta-bm"; ++ reg = <0xc0000 0xac>; ++ clocks = <&gateclk 13>; ++ internal-mem = <&bm_bppi>; ++ status = "disabled"; ++ }; ++ + xor@f0900 { + compatible = "marvell,orion-xor"; + reg = <0xF0900 0x100 +@@ -291,6 +299,17 @@ + #size-cells = <1>; + ranges = <0 MBUS_ID(0x09, 0x05) 0 0x800>; + }; ++ ++ bm_bppi: bm-bppi { ++ compatible = "mmio-sram"; ++ reg = <MBUS_ID(0x0c, 0x04) 0 0x100000>; ++ ranges = <0 MBUS_ID(0x0c, 0x04) 0 0x100000>; ++ #address-cells = <1>; ++ #size-cells = <1>; ++ clocks = <&gateclk 13>; ++ no-memory-wc; ++ status = "disabled"; ++ }; + }; + + clocks { diff --git a/target/linux/mvebu/patches-4.4/106-enable-bm-on-linksys-devices.patch b/target/linux/mvebu/patches-4.4/106-enable-bm-on-linksys-devices.patch new file mode 100644 index 0000000000..e80bc39a69 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/106-enable-bm-on-linksys-devices.patch @@ -0,0 +1,107 @@ +--- a/arch/arm/boot/dts/armada-385-linksys.dtsi ++++ b/arch/arm/boot/dts/armada-385-linksys.dtsi +@@ -59,7 +59,8 @@ + ranges = <MBUS_ID(0xf0, 0x01) 0 0xf1000000 0x100000 + MBUS_ID(0x01, 0x1d) 0 0xfff00000 0x100000 + MBUS_ID(0x09, 0x19) 0 0xf1100000 0x10000 +- MBUS_ID(0x09, 0x15) 0 0xf1110000 0x10000>; ++ MBUS_ID(0x09, 0x15) 0 0xf1110000 0x10000 ++ MBUS_ID(0x0c, 0x04) 0 0xf1200000 0x100000>; + + internal-regs { + +@@ -93,6 +94,9 @@ + ethernet@70000 { + status = "okay"; + phy-mode = "rgmii-id"; ++ buffer-manager = <&bm>; ++ bm,pool-long = <0>; ++ bm,pool-short = <3>; + fixed-link { + speed = <1000>; + full-duplex; +@@ -102,6 +106,9 @@ + ethernet@34000 { + status = "okay"; + phy-mode = "sgmii"; ++ buffer-manager = <&bm>; ++ bm,pool-long = <2>; ++ bm,pool-short = <3>; + fixed-link { + speed = <1000>; + full-duplex; +@@ -112,6 +119,10 @@ + status = "okay"; + }; + ++ bm@c8000 { ++ status = "okay"; ++ }; ++ + sata@a8000 { + status = "okay"; + }; +@@ -198,6 +209,10 @@ + }; + }; + ++ bm-bppi { ++ status = "okay"; ++ }; ++ + pcie-controller { + status = "okay"; + +--- a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts ++++ b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts +@@ -71,7 +71,8 @@ + ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000 + MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000 + MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000 +- MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>; ++ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000 ++ MBUS_ID(0x0c, 0x04) 0 0 0xf1200000 0x100000>; + + pcie-controller { + status = "okay"; +@@ -205,6 +206,9 @@ + pinctrl-names = "default"; + status = "okay"; + phy-mode = "rgmii-id"; ++ buffer-manager = <&bm>; ++ bm,pool-long = <0>; ++ bm,pool-short = <3>; + fixed-link { + speed = <1000>; + full-duplex; +@@ -216,12 +220,19 @@ + pinctrl-names = "default"; + status = "okay"; + phy-mode = "rgmii-id"; ++ buffer-manager = <&bm>; ++ bm,pool-long = <1>; ++ bm,pool-short = <3>; + fixed-link { + speed = <1000>; + full-duplex; + }; + }; + ++ bm@c0000 { ++ status = "okay"; ++ }; ++ + /* USB part of the eSATA/USB 2.0 port */ + usb@50000 { + status = "okay"; +@@ -379,6 +390,10 @@ + }; + }; + }; ++ ++ bm-bppi { ++ status = "okay"; ++ }; + }; + + gpio_keys { diff --git a/target/linux/mvebu/patches-4.4/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch b/target/linux/mvebu/patches-4.4/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch index 740fdcf8cf..bff58e9b75 100644 --- a/target/linux/mvebu/patches-4.4/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch +++ b/target/linux/mvebu/patches-4.4/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch @@ -9,7 +9,7 @@ Signed-off-by: Andrew Lunn <andrew@lunn.ch> --- a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts +++ b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts -@@ -414,13 +414,11 @@ +@@ -428,13 +428,11 @@ }; }; |