diff options
Diffstat (limited to 'drivers/net/ethernet/ti/icssg')
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icss_iep.c | 173 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icss_iep.h | 73 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_classifier.c | 122 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_common.c | 1271 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_config.c | 382 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_config.h | 85 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_ethtool.c | 142 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c | 4 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_prueth.c | 1966 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_prueth.h | 175 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c | 1251 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_queues.c | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_stats.c | 43 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_stats.h | 158 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_switchdev.c | 477 | ||||
-rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_switchdev.h | 13 |
16 files changed, 4889 insertions, 1448 deletions
diff --git a/drivers/net/ethernet/ti/icssg/icss_iep.c b/drivers/net/ethernet/ti/icssg/icss_iep.c index 3025e9c18970..d59c1744840a 100644 --- a/drivers/net/ethernet/ti/icssg/icss_iep.c +++ b/drivers/net/ethernet/ti/icssg/icss_iep.c @@ -17,6 +17,7 @@ #include <linux/timekeeping.h> #include <linux/interrupt.h> #include <linux/of_irq.h> +#include <linux/workqueue.h> #include "icss_iep.h" @@ -52,78 +53,6 @@ #define IEP_CAP_CFG_CAPNR_1ST_EVENT_EN(n) BIT(LATCH_INDEX(n)) #define IEP_CAP_CFG_CAP_ASYNC_EN(n) BIT(LATCH_INDEX(n) + 10) -enum { - ICSS_IEP_GLOBAL_CFG_REG, - ICSS_IEP_GLOBAL_STATUS_REG, - ICSS_IEP_COMPEN_REG, - ICSS_IEP_SLOW_COMPEN_REG, - ICSS_IEP_COUNT_REG0, - ICSS_IEP_COUNT_REG1, - ICSS_IEP_CAPTURE_CFG_REG, - ICSS_IEP_CAPTURE_STAT_REG, - - ICSS_IEP_CAP6_RISE_REG0, - ICSS_IEP_CAP6_RISE_REG1, - - ICSS_IEP_CAP7_RISE_REG0, - ICSS_IEP_CAP7_RISE_REG1, - - ICSS_IEP_CMP_CFG_REG, - ICSS_IEP_CMP_STAT_REG, - ICSS_IEP_CMP0_REG0, - ICSS_IEP_CMP0_REG1, - ICSS_IEP_CMP1_REG0, - ICSS_IEP_CMP1_REG1, - - ICSS_IEP_CMP8_REG0, - ICSS_IEP_CMP8_REG1, - ICSS_IEP_SYNC_CTRL_REG, - ICSS_IEP_SYNC0_STAT_REG, - ICSS_IEP_SYNC1_STAT_REG, - ICSS_IEP_SYNC_PWIDTH_REG, - ICSS_IEP_SYNC0_PERIOD_REG, - ICSS_IEP_SYNC1_DELAY_REG, - ICSS_IEP_SYNC_START_REG, - ICSS_IEP_MAX_REGS, -}; - -/** - * struct icss_iep_plat_data - Plat data to handle SoC variants - * @config: Regmap configuration data - * @reg_offs: register offsets to capture offset differences across SoCs - * @flags: Flags to represent IEP properties - */ -struct icss_iep_plat_data { - struct regmap_config *config; - u32 reg_offs[ICSS_IEP_MAX_REGS]; - u32 flags; -}; - -struct icss_iep { - struct device *dev; - void __iomem *base; - const struct icss_iep_plat_data *plat_data; - struct regmap *map; - struct device_node *client_np; - unsigned long refclk_freq; - int clk_tick_time; /* one refclk tick time in ns */ - struct ptp_clock_info ptp_info; - struct ptp_clock *ptp_clock; - struct mutex ptp_clk_mutex; /* PHC access serializer */ - spinlock_t irq_lock; /* CMP IRQ vs icss_iep_ptp_enable access */ - u32 def_inc; - s16 slow_cmp_inc; - u32 slow_cmp_count; - const struct icss_iep_clockops *ops; - void *clockops_data; - u32 cycle_time_ns; - u32 perout_enabled; - bool pps_enabled; - int cap_cmp_irq; - u64 period; - u32 latch_enable; -}; - /** * icss_iep_get_count_hi() - Get the upper 32 bit IEP counter * @iep: Pointer to structure representing IEP. @@ -192,14 +121,11 @@ static void icss_iep_update_to_next_boundary(struct icss_iep *iep, u64 start_ns) */ static void icss_iep_settime(struct icss_iep *iep, u64 ns) { - unsigned long flags; - if (iep->ops && iep->ops->settime) { iep->ops->settime(iep->clockops_data, ns); return; } - spin_lock_irqsave(&iep->irq_lock, flags); if (iep->pps_enabled || iep->perout_enabled) writel(0, iep->base + iep->plat_data->reg_offs[ICSS_IEP_SYNC_CTRL_REG]); @@ -210,7 +136,6 @@ static void icss_iep_settime(struct icss_iep *iep, u64 ns) writel(IEP_SYNC_CTRL_SYNC_N_EN(0) | IEP_SYNC_CTRL_SYNC_EN, iep->base + iep->plat_data->reg_offs[ICSS_IEP_SYNC_CTRL_REG]); } - spin_unlock_irqrestore(&iep->irq_lock, flags); } /** @@ -290,6 +215,9 @@ static void icss_iep_enable_shadow_mode(struct icss_iep *iep) for (cmp = IEP_MIN_CMP; cmp < IEP_MAX_CMP; cmp++) { regmap_update_bits(iep->map, ICSS_IEP_CMP_STAT_REG, IEP_CMP_STATUS(cmp), IEP_CMP_STATUS(cmp)); + + regmap_update_bits(iep->map, ICSS_IEP_CMP_CFG_REG, + IEP_CMP_CFG_CMP_EN(cmp), 0); } /* enable reset counter on CMP0 event */ @@ -546,36 +474,64 @@ static int icss_iep_perout_enable_hw(struct icss_iep *iep, static int icss_iep_perout_enable(struct icss_iep *iep, struct ptp_perout_request *req, int on) { - unsigned long flags; - int ret = 0; + return -EOPNOTSUPP; +} + +static void icss_iep_cap_cmp_work(struct work_struct *work) +{ + struct icss_iep *iep = container_of(work, struct icss_iep, work); + const u32 *reg_offs = iep->plat_data->reg_offs; + struct ptp_clock_event pevent; + unsigned int val; + u64 ns, ns_next; mutex_lock(&iep->ptp_clk_mutex); - if (iep->pps_enabled) { - ret = -EBUSY; - goto exit; + ns = readl(iep->base + reg_offs[ICSS_IEP_CMP1_REG0]); + if (iep->plat_data->flags & ICSS_IEP_64BIT_COUNTER_SUPPORT) { + val = readl(iep->base + reg_offs[ICSS_IEP_CMP1_REG1]); + ns |= (u64)val << 32; } + /* set next event */ + ns_next = ns + iep->period; + writel(lower_32_bits(ns_next), + iep->base + reg_offs[ICSS_IEP_CMP1_REG0]); + if (iep->plat_data->flags & ICSS_IEP_64BIT_COUNTER_SUPPORT) + writel(upper_32_bits(ns_next), + iep->base + reg_offs[ICSS_IEP_CMP1_REG1]); - if (iep->perout_enabled == !!on) - goto exit; - - spin_lock_irqsave(&iep->irq_lock, flags); - ret = icss_iep_perout_enable_hw(iep, req, on); - if (!ret) - iep->perout_enabled = !!on; - spin_unlock_irqrestore(&iep->irq_lock, flags); + pevent.pps_times.ts_real = ns_to_timespec64(ns); + pevent.type = PTP_CLOCK_PPSUSR; + pevent.index = 0; + ptp_clock_event(iep->ptp_clock, &pevent); + dev_dbg(iep->dev, "IEP:pps ts: %llu next:%llu:\n", ns, ns_next); -exit: mutex_unlock(&iep->ptp_clk_mutex); +} - return ret; +static irqreturn_t icss_iep_cap_cmp_irq(int irq, void *dev_id) +{ + struct icss_iep *iep = (struct icss_iep *)dev_id; + const u32 *reg_offs = iep->plat_data->reg_offs; + unsigned int val; + + val = readl(iep->base + reg_offs[ICSS_IEP_CMP_STAT_REG]); + /* The driver only enables CMP1 */ + if (val & BIT(1)) { + /* Clear the event */ + writel(BIT(1), iep->base + reg_offs[ICSS_IEP_CMP_STAT_REG]); + if (iep->pps_enabled || iep->perout_enabled) + schedule_work(&iep->work); + return IRQ_HANDLED; + } + + return IRQ_NONE; } static int icss_iep_pps_enable(struct icss_iep *iep, int on) { struct ptp_clock_request rq; struct timespec64 ts; - unsigned long flags; int ret = 0; u64 ns; @@ -589,8 +545,6 @@ static int icss_iep_pps_enable(struct icss_iep *iep, int on) if (iep->pps_enabled == !!on) goto exit; - spin_lock_irqsave(&iep->irq_lock, flags); - rq.perout.index = 0; if (on) { ns = icss_iep_gettime(iep, NULL); @@ -602,13 +556,13 @@ static int icss_iep_pps_enable(struct icss_iep *iep, int on) ret = icss_iep_perout_enable_hw(iep, &rq.perout, on); } else { ret = icss_iep_perout_enable_hw(iep, &rq.perout, on); + if (iep->cap_cmp_irq) + cancel_work_sync(&iep->work); } if (!ret) iep->pps_enabled = !!on; - spin_unlock_irqrestore(&iep->irq_lock, flags); - exit: mutex_unlock(&iep->ptp_clk_mutex); @@ -777,6 +731,8 @@ int icss_iep_init(struct icss_iep *iep, const struct icss_iep_clockops *clkops, if (iep->ops && iep->ops->perout_enable) { iep->ptp_info.n_per_out = 1; iep->ptp_info.pps = 1; + } else if (iep->cap_cmp_irq) { + iep->ptp_info.pps = 1; } if (iep->ops && iep->ops->extts_enable) @@ -808,6 +764,11 @@ int icss_iep_exit(struct icss_iep *iep) } icss_iep_disable(iep); + if (iep->pps_enabled) + icss_iep_pps_enable(iep, false); + else if (iep->perout_enabled) + icss_iep_perout_enable(iep, NULL, false); + return 0; } EXPORT_SYMBOL_GPL(icss_iep_exit); @@ -817,6 +778,7 @@ static int icss_iep_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct icss_iep *iep; struct clk *iep_clk; + int ret, irq; iep = devm_kzalloc(dev, sizeof(*iep), GFP_KERNEL); if (!iep) @@ -827,6 +789,22 @@ static int icss_iep_probe(struct platform_device *pdev) if (IS_ERR(iep->base)) return -ENODEV; + irq = platform_get_irq_byname_optional(pdev, "iep_cap_cmp"); + if (irq == -EPROBE_DEFER) + return irq; + + if (irq > 0) { + ret = devm_request_irq(dev, irq, icss_iep_cap_cmp_irq, + IRQF_TRIGGER_HIGH, "iep_cap_cmp", iep); + if (ret) { + dev_info(iep->dev, "cap_cmp irq request failed: %x\n", + ret); + } else { + iep->cap_cmp_irq = irq; + INIT_WORK(&iep->work, icss_iep_cap_cmp_work); + } + } + iep_clk = devm_clk_get(dev, NULL); if (IS_ERR(iep_clk)) return PTR_ERR(iep_clk); @@ -853,7 +831,6 @@ static int icss_iep_probe(struct platform_device *pdev) iep->ptp_info = icss_iep_ptp_info; mutex_init(&iep->ptp_clk_mutex); - spin_lock_init(&iep->irq_lock); dev_set_drvdata(dev, iep); icss_iep_disable(iep); @@ -892,7 +869,7 @@ static int icss_iep_regmap_read(void *context, unsigned int reg, return 0; } -static struct regmap_config am654_icss_iep_regmap_config = { +static const struct regmap_config am654_icss_iep_regmap_config = { .name = "icss iep", .reg_stride = 1, .reg_write = icss_iep_regmap_write, diff --git a/drivers/net/ethernet/ti/icssg/icss_iep.h b/drivers/net/ethernet/ti/icssg/icss_iep.h index 803a4b714893..0bdca0155abd 100644 --- a/drivers/net/ethernet/ti/icssg/icss_iep.h +++ b/drivers/net/ethernet/ti/icssg/icss_iep.h @@ -12,7 +12,78 @@ #include <linux/ptp_clock_kernel.h> #include <linux/regmap.h> -struct icss_iep; +enum { + ICSS_IEP_GLOBAL_CFG_REG, + ICSS_IEP_GLOBAL_STATUS_REG, + ICSS_IEP_COMPEN_REG, + ICSS_IEP_SLOW_COMPEN_REG, + ICSS_IEP_COUNT_REG0, + ICSS_IEP_COUNT_REG1, + ICSS_IEP_CAPTURE_CFG_REG, + ICSS_IEP_CAPTURE_STAT_REG, + + ICSS_IEP_CAP6_RISE_REG0, + ICSS_IEP_CAP6_RISE_REG1, + + ICSS_IEP_CAP7_RISE_REG0, + ICSS_IEP_CAP7_RISE_REG1, + + ICSS_IEP_CMP_CFG_REG, + ICSS_IEP_CMP_STAT_REG, + ICSS_IEP_CMP0_REG0, + ICSS_IEP_CMP0_REG1, + ICSS_IEP_CMP1_REG0, + ICSS_IEP_CMP1_REG1, + + ICSS_IEP_CMP8_REG0, + ICSS_IEP_CMP8_REG1, + ICSS_IEP_SYNC_CTRL_REG, + ICSS_IEP_SYNC0_STAT_REG, + ICSS_IEP_SYNC1_STAT_REG, + ICSS_IEP_SYNC_PWIDTH_REG, + ICSS_IEP_SYNC0_PERIOD_REG, + ICSS_IEP_SYNC1_DELAY_REG, + ICSS_IEP_SYNC_START_REG, + ICSS_IEP_MAX_REGS, +}; + +/** + * struct icss_iep_plat_data - Plat data to handle SoC variants + * @config: Regmap configuration data + * @reg_offs: register offsets to capture offset differences across SoCs + * @flags: Flags to represent IEP properties + */ +struct icss_iep_plat_data { + const struct regmap_config *config; + u32 reg_offs[ICSS_IEP_MAX_REGS]; + u32 flags; +}; + +struct icss_iep { + struct device *dev; + void __iomem *base; + const struct icss_iep_plat_data *plat_data; + struct regmap *map; + struct device_node *client_np; + unsigned long refclk_freq; + int clk_tick_time; /* one refclk tick time in ns */ + struct ptp_clock_info ptp_info; + struct ptp_clock *ptp_clock; + struct mutex ptp_clk_mutex; /* PHC access serializer */ + u32 def_inc; + s16 slow_cmp_inc; + u32 slow_cmp_count; + const struct icss_iep_clockops *ops; + void *clockops_data; + u32 cycle_time_ns; + u32 perout_enabled; + bool pps_enabled; + int cap_cmp_irq; + u64 period; + u32 latch_enable; + struct work_struct work; +}; + extern const struct icss_iep_clockops prueth_iep_clockops; /* Firmware specific clock operations */ diff --git a/drivers/net/ethernet/ti/icssg/icssg_classifier.c b/drivers/net/ethernet/ti/icssg/icssg_classifier.c index 6df53ab17fbc..833ca86d0b71 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_classifier.c +++ b/drivers/net/ethernet/ti/icssg/icssg_classifier.c @@ -274,12 +274,23 @@ static void rx_class_set_or(struct regmap *miig_rt, int slice, int n, regmap_write(miig_rt, offset, data); } +static u32 rx_class_get_or(struct regmap *miig_rt, int slice, int n) +{ + u32 offset, val; + + offset = RX_CLASS_N_REG(slice, n, RX_CLASS_OR_EN); + regmap_read(miig_rt, offset, &val); + + return val; +} + void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac) { regmap_write(miig_rt, MAC_INTERFACE_0, (u32)(mac[0] | mac[1] << 8 | mac[2] << 16 | mac[3] << 24)); regmap_write(miig_rt, MAC_INTERFACE_1, (u32)(mac[4] | mac[5] << 8)); } +EXPORT_SYMBOL_GPL(icssg_class_set_host_mac_addr); void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac) { @@ -287,6 +298,27 @@ void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac) mac[2] << 16 | mac[3] << 24)); regmap_write(miig_rt, offs[slice].mac1, (u32)(mac[4] | mac[5] << 8)); } +EXPORT_SYMBOL_GPL(icssg_class_set_mac_addr); + +static void icssg_class_ft1_add_mcast(struct regmap *miig_rt, int slice, + int slot, const u8 *addr, const u8 *mask) +{ + u32 val; + int i; + + WARN(slot >= FT1_NUM_SLOTS, "invalid slot: %d\n", slot); + + rx_class_ft1_set_da(miig_rt, slice, slot, addr); + rx_class_ft1_set_da_mask(miig_rt, slice, slot, mask); + rx_class_ft1_cfg_set_type(miig_rt, slice, slot, FT1_CFG_TYPE_EQ); + + /* Enable the FT1 slot in OR enable for all classifiers */ + for (i = 0; i < ICSSG_NUM_CLASSIFIERS_IN_USE; i++) { + val = rx_class_get_or(miig_rt, slice, i); + val |= RX_CLASS_FT_FT1_MATCH(slot); + rx_class_set_or(miig_rt, slice, i, val); + } +} /* disable all RX traffic */ void icssg_class_disable(struct regmap *miig_rt, int slice) @@ -330,38 +362,108 @@ void icssg_class_disable(struct regmap *miig_rt, int slice) /* clear CFG2 */ regmap_write(miig_rt, offs[slice].rx_class_cfg2, 0); } +EXPORT_SYMBOL_GPL(icssg_class_disable); -void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti) +void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti, + bool is_sr1) { + int num_classifiers = is_sr1 ? ICSSG_NUM_CLASSIFIERS_IN_USE : 1; u32 data; + int n; /* defaults */ icssg_class_disable(miig_rt, slice); /* Setup Classifier */ - /* match on Broadcast or MAC_PRU address */ - data = RX_CLASS_FT_BC | RX_CLASS_FT_DA_P; + for (n = 0; n < num_classifiers; n++) { + /* match on Broadcast or MAC_PRU address */ + data = RX_CLASS_FT_BC | RX_CLASS_FT_DA_P; - /* multicast */ - if (allmulti) - data |= RX_CLASS_FT_MC; + /* multicast */ + if (allmulti) + data |= RX_CLASS_FT_MC; - rx_class_set_or(miig_rt, slice, 0, data); + rx_class_set_or(miig_rt, slice, n, data); - /* set CFG1 for OR_OR_AND for classifier */ - rx_class_sel_set_type(miig_rt, slice, 0, RX_CLASS_SEL_TYPE_OR_OR_AND); + /* set CFG1 for OR_OR_AND for classifier */ + rx_class_sel_set_type(miig_rt, slice, n, + RX_CLASS_SEL_TYPE_OR_OR_AND); + } /* clear CFG2 */ regmap_write(miig_rt, offs[slice].rx_class_cfg2, 0); } +EXPORT_SYMBOL_GPL(icssg_class_default); + +void icssg_class_promiscuous_sr1(struct regmap *miig_rt, int slice) +{ + u32 data, offset; + int n; + + /* defaults */ + icssg_class_disable(miig_rt, slice); + + /* Setup Classifier */ + for (n = 0; n < ICSSG_NUM_CLASSIFIERS_IN_USE; n++) { + /* set RAW_MASK to bypass filters */ + offset = RX_CLASS_GATES_N_REG(slice, n); + regmap_read(miig_rt, offset, &data); + data |= RX_CLASS_GATES_RAW_MASK; + regmap_write(miig_rt, offset, data); + } +} +EXPORT_SYMBOL_GPL(icssg_class_promiscuous_sr1); + +void icssg_class_add_mcast_sr1(struct regmap *miig_rt, int slice, + struct net_device *ndev) +{ + u8 mask_addr[6] = { 0, 0, 0, 0, 0, 0xff }; + struct netdev_hw_addr *ha; + int slot = 2; + + rx_class_ft1_set_start_len(miig_rt, slice, 0, 6); + /* reserve first 2 slots for + * 1) 01-80-C2-00-00-XX Known Service Ethernet Multicast addresses + * 2) 01-00-5e-00-00-XX Local Network Control Block + * (224.0.0.0 - 224.0.0.255 (224.0.0/24)) + */ + icssg_class_ft1_add_mcast(miig_rt, slice, 0, + eth_reserved_addr_base, mask_addr); + icssg_class_ft1_add_mcast(miig_rt, slice, 1, + eth_ipv4_mcast_addr_base, mask_addr); + mask_addr[5] = 0; + netdev_for_each_mc_addr(ha, ndev) { + /* skip addresses matching reserved slots */ + if (!memcmp(eth_reserved_addr_base, ha->addr, 5) || + !memcmp(eth_ipv4_mcast_addr_base, ha->addr, 5)) { + netdev_dbg(ndev, "mcast skip %pM\n", ha->addr); + continue; + } + + if (slot >= FT1_NUM_SLOTS) { + netdev_dbg(ndev, + "can't add more than %d MC addresses, enabling allmulti\n", + FT1_NUM_SLOTS); + icssg_class_default(miig_rt, slice, 1, true); + break; + } + + netdev_dbg(ndev, "mcast add %pM\n", ha->addr); + icssg_class_ft1_add_mcast(miig_rt, slice, slot, + ha->addr, mask_addr); + slot++; + } +} +EXPORT_SYMBOL_GPL(icssg_class_add_mcast_sr1); /* required for SAV check */ void icssg_ft1_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac_addr) { const u8 mask_addr[] = { 0, 0, 0, 0, 0, 0, }; - rx_class_ft1_set_start_len(miig_rt, slice, 0, 6); + rx_class_ft1_set_start_len(miig_rt, slice, ETH_ALEN, ETH_ALEN); rx_class_ft1_set_da(miig_rt, slice, 0, mac_addr); rx_class_ft1_set_da_mask(miig_rt, slice, 0, mask_addr); rx_class_ft1_cfg_set_type(miig_rt, slice, 0, FT1_CFG_TYPE_EQ); } +EXPORT_SYMBOL_GPL(icssg_ft1_set_mac_addr); diff --git a/drivers/net/ethernet/ti/icssg/icssg_common.c b/drivers/net/ethernet/ti/icssg/icssg_common.c new file mode 100644 index 000000000000..74f0f200a89d --- /dev/null +++ b/drivers/net/ethernet/ti/icssg/icssg_common.c @@ -0,0 +1,1271 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Texas Instruments ICSSG Ethernet Driver + * + * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/ + * Copyright (C) Siemens AG, 2024 + * + */ + +#include <linux/dma-mapping.h> +#include <linux/dma/ti-cppi5.h> +#include <linux/etherdevice.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/of_mdio.h> +#include <linux/phy.h> +#include <linux/remoteproc/pruss.h> +#include <linux/regmap.h> +#include <linux/remoteproc.h> + +#include "icssg_prueth.h" +#include "../k3-cppi-desc-pool.h" + +/* Netif debug messages possible */ +#define PRUETH_EMAC_DEBUG (NETIF_MSG_DRV | \ + NETIF_MSG_PROBE | \ + NETIF_MSG_LINK | \ + NETIF_MSG_TIMER | \ + NETIF_MSG_IFDOWN | \ + NETIF_MSG_IFUP | \ + NETIF_MSG_RX_ERR | \ + NETIF_MSG_TX_ERR | \ + NETIF_MSG_TX_QUEUED | \ + NETIF_MSG_INTR | \ + NETIF_MSG_TX_DONE | \ + NETIF_MSG_RX_STATUS | \ + NETIF_MSG_PKTDATA | \ + NETIF_MSG_HW | \ + NETIF_MSG_WOL) + +#define prueth_napi_to_emac(napi) container_of(napi, struct prueth_emac, napi_rx) + +void prueth_cleanup_rx_chns(struct prueth_emac *emac, + struct prueth_rx_chn *rx_chn, + int max_rflows) +{ + if (rx_chn->desc_pool) + k3_cppi_desc_pool_destroy(rx_chn->desc_pool); + + if (rx_chn->rx_chn) + k3_udma_glue_release_rx_chn(rx_chn->rx_chn); +} +EXPORT_SYMBOL_GPL(prueth_cleanup_rx_chns); + +void prueth_cleanup_tx_chns(struct prueth_emac *emac) +{ + int i; + + for (i = 0; i < emac->tx_ch_num; i++) { + struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; + + if (tx_chn->desc_pool) + k3_cppi_desc_pool_destroy(tx_chn->desc_pool); + + if (tx_chn->tx_chn) + k3_udma_glue_release_tx_chn(tx_chn->tx_chn); + + /* Assume prueth_cleanup_tx_chns() is called at the + * end after all channel resources are freed + */ + memset(tx_chn, 0, sizeof(*tx_chn)); + } +} +EXPORT_SYMBOL_GPL(prueth_cleanup_tx_chns); + +void prueth_ndev_del_tx_napi(struct prueth_emac *emac, int num) +{ + int i; + + for (i = 0; i < num; i++) { + struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; + + if (tx_chn->irq) + free_irq(tx_chn->irq, tx_chn); + netif_napi_del(&tx_chn->napi_tx); + } +} +EXPORT_SYMBOL_GPL(prueth_ndev_del_tx_napi); + +void prueth_xmit_free(struct prueth_tx_chn *tx_chn, + struct cppi5_host_desc_t *desc) +{ + struct cppi5_host_desc_t *first_desc, *next_desc; + dma_addr_t buf_dma, next_desc_dma; + u32 buf_dma_len; + + first_desc = desc; + next_desc = first_desc; + + cppi5_hdesc_get_obuf(first_desc, &buf_dma, &buf_dma_len); + k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &buf_dma); + + dma_unmap_single(tx_chn->dma_dev, buf_dma, buf_dma_len, + DMA_TO_DEVICE); + + next_desc_dma = cppi5_hdesc_get_next_hbdesc(first_desc); + k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &next_desc_dma); + while (next_desc_dma) { + next_desc = k3_cppi_desc_pool_dma2virt(tx_chn->desc_pool, + next_desc_dma); + cppi5_hdesc_get_obuf(next_desc, &buf_dma, &buf_dma_len); + k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &buf_dma); + + dma_unmap_page(tx_chn->dma_dev, buf_dma, buf_dma_len, + DMA_TO_DEVICE); + + next_desc_dma = cppi5_hdesc_get_next_hbdesc(next_desc); + k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &next_desc_dma); + + k3_cppi_desc_pool_free(tx_chn->desc_pool, next_desc); + } + + k3_cppi_desc_pool_free(tx_chn->desc_pool, first_desc); +} +EXPORT_SYMBOL_GPL(prueth_xmit_free); + +int emac_tx_complete_packets(struct prueth_emac *emac, int chn, + int budget, bool *tdown) +{ + struct net_device *ndev = emac->ndev; + struct cppi5_host_desc_t *desc_tx; + struct netdev_queue *netif_txq; + struct prueth_tx_chn *tx_chn; + unsigned int total_bytes = 0; + struct sk_buff *skb; + dma_addr_t desc_dma; + int res, num_tx = 0; + void **swdata; + + tx_chn = &emac->tx_chns[chn]; + + while (true) { + res = k3_udma_glue_pop_tx_chn(tx_chn->tx_chn, &desc_dma); + if (res == -ENODATA) + break; + + /* teardown completion */ + if (cppi5_desc_is_tdcm(desc_dma)) { + if (atomic_dec_and_test(&emac->tdown_cnt)) + complete(&emac->tdown_complete); + *tdown = true; + break; + } + + desc_tx = k3_cppi_desc_pool_dma2virt(tx_chn->desc_pool, + desc_dma); + swdata = cppi5_hdesc_get_swdata(desc_tx); + + /* was this command's TX complete? */ + if (emac->is_sr1 && *(swdata) == emac->cmd_data) { + prueth_xmit_free(tx_chn, desc_tx); + continue; + } + + skb = *(swdata); + prueth_xmit_free(tx_chn, desc_tx); + + ndev = skb->dev; + ndev->stats.tx_packets++; + ndev->stats.tx_bytes += skb->len; + total_bytes += skb->len; + napi_consume_skb(skb, budget); + num_tx++; + } + + if (!num_tx) + return 0; + + netif_txq = netdev_get_tx_queue(ndev, chn); + netdev_tx_completed_queue(netif_txq, num_tx, total_bytes); + + if (netif_tx_queue_stopped(netif_txq)) { + /* If the TX queue was stopped, wake it now + * if we have enough room. + */ + __netif_tx_lock(netif_txq, smp_processor_id()); + if (netif_running(ndev) && + (k3_cppi_desc_pool_avail(tx_chn->desc_pool) >= + MAX_SKB_FRAGS)) + netif_tx_wake_queue(netif_txq); + __netif_tx_unlock(netif_txq); + } + + return num_tx; +} + +static enum hrtimer_restart emac_tx_timer_callback(struct hrtimer *timer) +{ + struct prueth_tx_chn *tx_chns = + container_of(timer, struct prueth_tx_chn, tx_hrtimer); + + enable_irq(tx_chns->irq); + return HRTIMER_NORESTART; +} + +static int emac_napi_tx_poll(struct napi_struct *napi_tx, int budget) +{ + struct prueth_tx_chn *tx_chn = prueth_napi_to_tx_chn(napi_tx); + struct prueth_emac *emac = tx_chn->emac; + bool tdown = false; + int num_tx_packets; + + num_tx_packets = emac_tx_complete_packets(emac, tx_chn->id, budget, + &tdown); + + if (num_tx_packets >= budget) + return budget; + + if (napi_complete_done(napi_tx, num_tx_packets)) { + if (unlikely(tx_chn->tx_pace_timeout_ns && !tdown)) { + hrtimer_start(&tx_chn->tx_hrtimer, + ns_to_ktime(tx_chn->tx_pace_timeout_ns), + HRTIMER_MODE_REL_PINNED); + } else { + enable_irq(tx_chn->irq); + } + } + + return num_tx_packets; +} + +static irqreturn_t prueth_tx_irq(int irq, void *dev_id) +{ + struct prueth_tx_chn *tx_chn = dev_id; + + disable_irq_nosync(irq); + napi_schedule(&tx_chn->napi_tx); + + return IRQ_HANDLED; +} + +int prueth_ndev_add_tx_napi(struct prueth_emac *emac) +{ + struct prueth *prueth = emac->prueth; + int i, ret; + + for (i = 0; i < emac->tx_ch_num; i++) { + struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; + + netif_napi_add_tx(emac->ndev, &tx_chn->napi_tx, emac_napi_tx_poll); + hrtimer_init(&tx_chn->tx_hrtimer, CLOCK_MONOTONIC, + HRTIMER_MODE_REL_PINNED); + tx_chn->tx_hrtimer.function = &emac_tx_timer_callback; + ret = request_irq(tx_chn->irq, prueth_tx_irq, + IRQF_TRIGGER_HIGH, tx_chn->name, + tx_chn); + if (ret) { + netif_napi_del(&tx_chn->napi_tx); + dev_err(prueth->dev, "unable to request TX IRQ %d\n", + tx_chn->irq); + goto fail; + } + } + + return 0; +fail: + prueth_ndev_del_tx_napi(emac, i); + return ret; +} +EXPORT_SYMBOL_GPL(prueth_ndev_add_tx_napi); + +int prueth_init_tx_chns(struct prueth_emac *emac) +{ + static const struct k3_ring_cfg ring_cfg = { + .elm_size = K3_RINGACC_RING_ELSIZE_8, + .mode = K3_RINGACC_RING_MODE_RING, + .flags = 0, + .size = PRUETH_MAX_TX_DESC, + }; + struct k3_udma_glue_tx_channel_cfg tx_cfg; + struct device *dev = emac->prueth->dev; + struct net_device *ndev = emac->ndev; + int ret, slice, i; + u32 hdesc_size; + + slice = prueth_emac_slice(emac); + if (slice < 0) + return slice; + + init_completion(&emac->tdown_complete); + + hdesc_size = cppi5_hdesc_calc_size(true, PRUETH_NAV_PS_DATA_SIZE, + PRUETH_NAV_SW_DATA_SIZE); + memset(&tx_cfg, 0, sizeof(tx_cfg)); + tx_cfg.swdata_size = PRUETH_NAV_SW_DATA_SIZE; + tx_cfg.tx_cfg = ring_cfg; + tx_cfg.txcq_cfg = ring_cfg; + + for (i = 0; i < emac->tx_ch_num; i++) { + struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; + + /* To differentiate channels for SLICE0 vs SLICE1 */ + snprintf(tx_chn->name, sizeof(tx_chn->name), + "tx%d-%d", slice, i); + + tx_chn->emac = emac; + tx_chn->id = i; + tx_chn->descs_num = PRUETH_MAX_TX_DESC; + + tx_chn->tx_chn = + k3_udma_glue_request_tx_chn(dev, tx_chn->name, + &tx_cfg); + if (IS_ERR(tx_chn->tx_chn)) { + ret = PTR_ERR(tx_chn->tx_chn); + tx_chn->tx_chn = NULL; + netdev_err(ndev, + "Failed to request tx dma ch: %d\n", ret); + goto fail; + } + + tx_chn->dma_dev = k3_udma_glue_tx_get_dma_device(tx_chn->tx_chn); + tx_chn->desc_pool = + k3_cppi_desc_pool_create_name(tx_chn->dma_dev, + tx_chn->descs_num, + hdesc_size, + tx_chn->name); + if (IS_ERR(tx_chn->desc_pool)) { + ret = PTR_ERR(tx_chn->desc_pool); + tx_chn->desc_pool = NULL; + netdev_err(ndev, "Failed to create tx pool: %d\n", ret); + goto fail; + } + + ret = k3_udma_glue_tx_get_irq(tx_chn->tx_chn); + if (ret < 0) { + netdev_err(ndev, "failed to get tx irq\n"); + goto fail; + } + tx_chn->irq = ret; + + snprintf(tx_chn->name, sizeof(tx_chn->name), "%s-tx%d", + dev_name(dev), tx_chn->id); + } + + return 0; + +fail: + prueth_cleanup_tx_chns(emac); + return ret; +} +EXPORT_SYMBOL_GPL(prueth_init_tx_chns); + +int prueth_init_rx_chns(struct prueth_emac *emac, + struct prueth_rx_chn *rx_chn, + char *name, u32 max_rflows, + u32 max_desc_num) +{ + struct k3_udma_glue_rx_channel_cfg rx_cfg; + struct device *dev = emac->prueth->dev; + struct net_device *ndev = emac->ndev; + u32 fdqring_id, hdesc_size; + int i, ret = 0, slice; + int flow_id_base; + + slice = prueth_emac_slice(emac); + if (slice < 0) + return slice; + + /* To differentiate channels for SLICE0 vs SLICE1 */ + snprintf(rx_chn->name, sizeof(rx_chn->name), "%s%d", name, slice); + + hdesc_size = cppi5_hdesc_calc_size(true, PRUETH_NAV_PS_DATA_SIZE, + PRUETH_NAV_SW_DATA_SIZE); + memset(&rx_cfg, 0, sizeof(rx_cfg)); + rx_cfg.swdata_size = PRUETH_NAV_SW_DATA_SIZE; + rx_cfg.flow_id_num = max_rflows; + rx_cfg.flow_id_base = -1; /* udmax will auto select flow id base */ + + /* init all flows */ + rx_chn->dev = dev; + rx_chn->descs_num = max_desc_num; + + rx_chn->rx_chn = k3_udma_glue_request_rx_chn(dev, rx_chn->name, + &rx_cfg); + if (IS_ERR(rx_chn->rx_chn)) { + ret = PTR_ERR(rx_chn->rx_chn); + rx_chn->rx_chn = NULL; + netdev_err(ndev, "Failed to request rx dma ch: %d\n", ret); + goto fail; + } + + rx_chn->dma_dev = k3_udma_glue_rx_get_dma_device(rx_chn->rx_chn); + rx_chn->desc_pool = k3_cppi_desc_pool_create_name(rx_chn->dma_dev, + rx_chn->descs_num, + hdesc_size, + rx_chn->name); + if (IS_ERR(rx_chn->desc_pool)) { + ret = PTR_ERR(rx_chn->desc_pool); + rx_chn->desc_pool = NULL; + netdev_err(ndev, "Failed to create rx pool: %d\n", ret); + goto fail; + } + + flow_id_base = k3_udma_glue_rx_get_flow_id_base(rx_chn->rx_chn); + if (emac->is_sr1 && !strcmp(name, "rxmgm")) { + emac->rx_mgm_flow_id_base = flow_id_base; + netdev_dbg(ndev, "mgm flow id base = %d\n", flow_id_base); + } else { + emac->rx_flow_id_base = flow_id_base; + netdev_dbg(ndev, "flow id base = %d\n", flow_id_base); + } + + fdqring_id = K3_RINGACC_RING_ID_ANY; + for (i = 0; i < rx_cfg.flow_id_num; i++) { + struct k3_ring_cfg rxring_cfg = { + .elm_size = K3_RINGACC_RING_ELSIZE_8, + .mode = K3_RINGACC_RING_MODE_RING, + .flags = 0, + }; + struct k3_ring_cfg fdqring_cfg = { + .elm_size = K3_RINGACC_RING_ELSIZE_8, + .flags = K3_RINGACC_RING_SHARED, + }; + struct k3_udma_glue_rx_flow_cfg rx_flow_cfg = { + .rx_cfg = rxring_cfg, + .rxfdq_cfg = fdqring_cfg, + .ring_rxq_id = K3_RINGACC_RING_ID_ANY, + .src_tag_lo_sel = + K3_UDMA_GLUE_SRC_TAG_LO_USE_REMOTE_SRC_TAG, + }; + + rx_flow_cfg.ring_rxfdq0_id = fdqring_id; + rx_flow_cfg.rx_cfg.size = max_desc_num; + rx_flow_cfg.rxfdq_cfg.size = max_desc_num; + rx_flow_cfg.rxfdq_cfg.mode = emac->prueth->pdata.fdqring_mode; + + ret = k3_udma_glue_rx_flow_init(rx_chn->rx_chn, + i, &rx_flow_cfg); + if (ret) { + netdev_err(ndev, "Failed to init rx flow%d %d\n", + i, ret); + goto fail; + } + if (!i) + fdqring_id = k3_udma_glue_rx_flow_get_fdq_id(rx_chn->rx_chn, + i); + ret = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i); + if (ret < 0) { + netdev_err(ndev, "Failed to get rx dma irq"); + goto fail; + } + rx_chn->irq[i] = ret; + } + + return 0; + +fail: + prueth_cleanup_rx_chns(emac, rx_chn, max_rflows); + return ret; +} +EXPORT_SYMBOL_GPL(prueth_init_rx_chns); + +int prueth_dma_rx_push(struct prueth_emac *emac, + struct sk_buff *skb, + struct prueth_rx_chn *rx_chn) +{ + struct net_device *ndev = emac->ndev; + struct cppi5_host_desc_t *desc_rx; + u32 pkt_len = skb_tailroom(skb); + dma_addr_t desc_dma; + dma_addr_t buf_dma; + void **swdata; + + desc_rx = k3_cppi_desc_pool_alloc(rx_chn->desc_pool); + if (!desc_rx) { + netdev_err(ndev, "rx push: failed to allocate descriptor\n"); + return -ENOMEM; + } + desc_dma = k3_cppi_desc_pool_virt2dma(rx_chn->desc_pool, desc_rx); + + buf_dma = dma_map_single(rx_chn->dma_dev, skb->data, pkt_len, DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(rx_chn->dma_dev, buf_dma))) { + k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); + netdev_err(ndev, "rx push: failed to map rx pkt buffer\n"); + return -EINVAL; + } + + cppi5_hdesc_init(desc_rx, CPPI5_INFO0_HDESC_EPIB_PRESENT, + PRUETH_NAV_PS_DATA_SIZE); + k3_udma_glue_rx_dma_to_cppi5_addr(rx_chn->rx_chn, &buf_dma); + cppi5_hdesc_attach_buf(desc_rx, buf_dma, skb_tailroom(skb), buf_dma, skb_tailroom(skb)); + + swdata = cppi5_hdesc_get_swdata(desc_rx); + *swdata = skb; + + return k3_udma_glue_push_rx_chn(rx_chn->rx_chn, 0, + desc_rx, desc_dma); +} +EXPORT_SYMBOL_GPL(prueth_dma_rx_push); + +u64 icssg_ts_to_ns(u32 hi_sw, u32 hi, u32 lo, u32 cycle_time_ns) +{ + u32 iepcount_lo, iepcount_hi, hi_rollover_count; + u64 ns; + + iepcount_lo = lo & GENMASK(19, 0); + iepcount_hi = (hi & GENMASK(11, 0)) << 12 | lo >> 20; + hi_rollover_count = hi >> 11; + + ns = ((u64)hi_rollover_count) << 23 | (iepcount_hi + hi_sw); + ns = ns * cycle_time_ns + iepcount_lo; + + return ns; +} +EXPORT_SYMBOL_GPL(icssg_ts_to_ns); + +void emac_rx_timestamp(struct prueth_emac *emac, + struct sk_buff *skb, u32 *psdata) +{ + struct skb_shared_hwtstamps *ssh; + u64 ns; + + if (emac->is_sr1) { + ns = (u64)psdata[1] << 32 | psdata[0]; + } else { + u32 hi_sw = readl(emac->prueth->shram.va + + TIMESYNC_FW_WC_COUNT_HI_SW_OFFSET_OFFSET); + ns = icssg_ts_to_ns(hi_sw, psdata[1], psdata[0], + IEP_DEFAULT_CYCLE_TIME_NS); + } + + ssh = skb_hwtstamps(skb); + memset(ssh, 0, sizeof(*ssh)); + ssh->hwtstamp = ns_to_ktime(ns); +} + +static int emac_rx_packet(struct prueth_emac *emac, u32 flow_id) +{ + struct prueth_rx_chn *rx_chn = &emac->rx_chns; + u32 buf_dma_len, pkt_len, port_id = 0; + struct net_device *ndev = emac->ndev; + struct cppi5_host_desc_t *desc_rx; + struct sk_buff *skb, *new_skb; + dma_addr_t desc_dma, buf_dma; + void **swdata; + u32 *psdata; + int ret; + + ret = k3_udma_glue_pop_rx_chn(rx_chn->rx_chn, flow_id, &desc_dma); + if (ret) { + if (ret != -ENODATA) + netdev_err(ndev, "rx pop: failed: %d\n", ret); + return ret; + } + + if (cppi5_desc_is_tdcm(desc_dma)) /* Teardown ? */ + return 0; + + desc_rx = k3_cppi_desc_pool_dma2virt(rx_chn->desc_pool, desc_dma); + + swdata = cppi5_hdesc_get_swdata(desc_rx); + skb = *swdata; + + psdata = cppi5_hdesc_get_psdata(desc_rx); + /* RX HW timestamp */ + if (emac->rx_ts_enabled) + emac_rx_timestamp(emac, skb, psdata); + + cppi5_hdesc_get_obuf(desc_rx, &buf_dma, &buf_dma_len); + k3_udma_glue_rx_cppi5_to_dma_addr(rx_chn->rx_chn, &buf_dma); + pkt_len = cppi5_hdesc_get_pktlen(desc_rx); + /* firmware adds 4 CRC bytes, strip them */ + pkt_len -= 4; + cppi5_desc_get_tags_ids(&desc_rx->hdr, &port_id, NULL); + + dma_unmap_single(rx_chn->dma_dev, buf_dma, buf_dma_len, DMA_FROM_DEVICE); + k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); + + skb->dev = ndev; + new_skb = netdev_alloc_skb_ip_align(ndev, PRUETH_MAX_PKT_SIZE); + /* if allocation fails we drop the packet but push the + * descriptor back to the ring with old skb to prevent a stall + */ + if (!new_skb) { + ndev->stats.rx_dropped++; + new_skb = skb; + } else { + /* send the filled skb up the n/w stack */ + skb_put(skb, pkt_len); + if (emac->prueth->is_switch_mode) + skb->offload_fwd_mark = emac->offload_fwd_mark; + skb->protocol = eth_type_trans(skb, ndev); + napi_gro_receive(&emac->napi_rx, skb); + ndev->stats.rx_bytes += pkt_len; + ndev->stats.rx_packets++; + } + + /* queue another RX DMA */ + ret = prueth_dma_rx_push(emac, new_skb, &emac->rx_chns); + if (WARN_ON(ret < 0)) { + dev_kfree_skb_any(new_skb); + ndev->stats.rx_errors++; + ndev->stats.rx_dropped++; + } + + return ret; +} + +static void prueth_rx_cleanup(void *data, dma_addr_t desc_dma) +{ + struct prueth_rx_chn *rx_chn = data; + struct cppi5_host_desc_t *desc_rx; + struct sk_buff *skb; + dma_addr_t buf_dma; + u32 buf_dma_len; + void **swdata; + + desc_rx = k3_cppi_desc_pool_dma2virt(rx_chn->desc_pool, desc_dma); + swdata = cppi5_hdesc_get_swdata(desc_rx); + skb = *swdata; + cppi5_hdesc_get_obuf(desc_rx, &buf_dma, &buf_dma_len); + k3_udma_glue_rx_cppi5_to_dma_addr(rx_chn->rx_chn, &buf_dma); + + dma_unmap_single(rx_chn->dma_dev, buf_dma, buf_dma_len, + DMA_FROM_DEVICE); + k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); + + dev_kfree_skb_any(skb); +} + +static int prueth_tx_ts_cookie_get(struct prueth_emac *emac) +{ + int i; + + /* search and get the next free slot */ + for (i = 0; i < PRUETH_MAX_TX_TS_REQUESTS; i++) { + if (!emac->tx_ts_skb[i]) { + emac->tx_ts_skb[i] = ERR_PTR(-EBUSY); /* reserve slot */ + return i; + } + } + + return -EBUSY; +} + +/** + * icssg_ndo_start_xmit - EMAC Transmit function + * @skb: SKB pointer + * @ndev: EMAC network adapter + * + * Called by the system to transmit a packet - we queue the packet in + * EMAC hardware transmit queue + * Doesn't wait for completion we'll check for TX completion in + * emac_tx_complete_packets(). + * + * Return: enum netdev_tx + */ +enum netdev_tx icssg_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev) +{ + struct cppi5_host_desc_t *first_desc, *next_desc, *cur_desc; + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + struct netdev_queue *netif_txq; + struct prueth_tx_chn *tx_chn; + dma_addr_t desc_dma, buf_dma; + u32 pkt_len, dst_tag_id; + int i, ret = 0, q_idx; + bool in_tx_ts = 0; + int tx_ts_cookie; + void **swdata; + u32 *epib; + + pkt_len = skb_headlen(skb); + q_idx = skb_get_queue_mapping(skb); + + tx_chn = &emac->tx_chns[q_idx]; + netif_txq = netdev_get_tx_queue(ndev, q_idx); + + /* Map the linear buffer */ + buf_dma = dma_map_single(tx_chn->dma_dev, skb->data, pkt_len, DMA_TO_DEVICE); + if (dma_mapping_error(tx_chn->dma_dev, buf_dma)) { + netdev_err(ndev, "tx: failed to map skb buffer\n"); + ret = NETDEV_TX_OK; + goto drop_free_skb; + } + + first_desc = k3_cppi_desc_pool_alloc(tx_chn->desc_pool); + if (!first_desc) { + netdev_dbg(ndev, "tx: failed to allocate descriptor\n"); + dma_unmap_single(tx_chn->dma_dev, buf_dma, pkt_len, DMA_TO_DEVICE); + goto drop_stop_q_busy; + } + + cppi5_hdesc_init(first_desc, CPPI5_INFO0_HDESC_EPIB_PRESENT, + PRUETH_NAV_PS_DATA_SIZE); + cppi5_hdesc_set_pkttype(first_desc, 0); + epib = first_desc->epib; + epib[0] = 0; + epib[1] = 0; + if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && + emac->tx_ts_enabled) { + tx_ts_cookie = prueth_tx_ts_cookie_get(emac); + if (tx_ts_cookie >= 0) { + skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; + /* Request TX timestamp */ + epib[0] = (u32)tx_ts_cookie; + epib[1] = 0x80000000; /* TX TS request */ + emac->tx_ts_skb[tx_ts_cookie] = skb_get(skb); + in_tx_ts = 1; + } + } + + /* set dst tag to indicate internal qid at the firmware which is at + * bit8..bit15. bit0..bit7 indicates port num for directed + * packets in case of switch mode operation and port num 0 + * for undirected packets in case of HSR offload mode + */ + dst_tag_id = emac->port_id | (q_idx << 8); + + if (prueth->is_hsr_offload_mode && + (ndev->features & NETIF_F_HW_HSR_DUP)) + dst_tag_id = PRUETH_UNDIRECTED_PKT_DST_TAG; + + if (prueth->is_hsr_offload_mode && + (ndev->features & NETIF_F_HW_HSR_TAG_INS)) + epib[1] |= PRUETH_UNDIRECTED_PKT_TAG_INS; + + cppi5_desc_set_tags_ids(&first_desc->hdr, 0, dst_tag_id); + k3_udma_glue_tx_dma_to_cppi5_addr(tx_chn->tx_chn, &buf_dma); + cppi5_hdesc_attach_buf(first_desc, buf_dma, pkt_len, buf_dma, pkt_len); + swdata = cppi5_hdesc_get_swdata(first_desc); + *swdata = skb; + + /* Handle the case where skb is fragmented in pages */ + cur_desc = first_desc; + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + u32 frag_size = skb_frag_size(frag); + + next_desc = k3_cppi_desc_pool_alloc(tx_chn->desc_pool); + if (!next_desc) { + netdev_err(ndev, + "tx: failed to allocate frag. descriptor\n"); + goto free_desc_stop_q_busy_cleanup_tx_ts; + } + + buf_dma = skb_frag_dma_map(tx_chn->dma_dev, frag, 0, frag_size, + DMA_TO_DEVICE); + if (dma_mapping_error(tx_chn->dma_dev, buf_dma)) { + netdev_err(ndev, "tx: Failed to map skb page\n"); + k3_cppi_desc_pool_free(tx_chn->desc_pool, next_desc); + ret = NETDEV_TX_OK; + goto cleanup_tx_ts; + } + + cppi5_hdesc_reset_hbdesc(next_desc); + k3_udma_glue_tx_dma_to_cppi5_addr(tx_chn->tx_chn, &buf_dma); + cppi5_hdesc_attach_buf(next_desc, + buf_dma, frag_size, buf_dma, frag_size); + + desc_dma = k3_cppi_desc_pool_virt2dma(tx_chn->desc_pool, + next_desc); + k3_udma_glue_tx_dma_to_cppi5_addr(tx_chn->tx_chn, &desc_dma); + cppi5_hdesc_link_hbdesc(cur_desc, desc_dma); + + pkt_len += frag_size; + cur_desc = next_desc; + } + WARN_ON_ONCE(pkt_len != skb->len); + + /* report bql before sending packet */ + netdev_tx_sent_queue(netif_txq, pkt_len); + + cppi5_hdesc_set_pktlen(first_desc, pkt_len); + desc_dma = k3_cppi_desc_pool_virt2dma(tx_chn->desc_pool, first_desc); + /* cppi5_desc_dump(first_desc, 64); */ + + skb_tx_timestamp(skb); /* SW timestamp if SKBTX_IN_PROGRESS not set */ + ret = k3_udma_glue_push_tx_chn(tx_chn->tx_chn, first_desc, desc_dma); + if (ret) { + netdev_err(ndev, "tx: push failed: %d\n", ret); + goto drop_free_descs; + } + + if (in_tx_ts) + atomic_inc(&emac->tx_ts_pending); + + if (k3_cppi_desc_pool_avail(tx_chn->desc_pool) < MAX_SKB_FRAGS) { + netif_tx_stop_queue(netif_txq); + /* Barrier, so that stop_queue visible to other cpus */ + smp_mb__after_atomic(); + + if (k3_cppi_desc_pool_avail(tx_chn->desc_pool) >= + MAX_SKB_FRAGS) + netif_tx_wake_queue(netif_txq); + } + + return NETDEV_TX_OK; + +cleanup_tx_ts: + if (in_tx_ts) { + dev_kfree_skb_any(emac->tx_ts_skb[tx_ts_cookie]); + emac->tx_ts_skb[tx_ts_cookie] = NULL; + } + +drop_free_descs: + prueth_xmit_free(tx_chn, first_desc); + +drop_free_skb: + dev_kfree_skb_any(skb); + + /* error */ + ndev->stats.tx_dropped++; + netdev_err(ndev, "tx: error: %d\n", ret); + + return ret; + +free_desc_stop_q_busy_cleanup_tx_ts: + if (in_tx_ts) { + dev_kfree_skb_any(emac->tx_ts_skb[tx_ts_cookie]); + emac->tx_ts_skb[tx_ts_cookie] = NULL; + } + prueth_xmit_free(tx_chn, first_desc); + +drop_stop_q_busy: + netif_tx_stop_queue(netif_txq); + return NETDEV_TX_BUSY; +} +EXPORT_SYMBOL_GPL(icssg_ndo_start_xmit); + +static void prueth_tx_cleanup(void *data, dma_addr_t desc_dma) +{ + struct prueth_tx_chn *tx_chn = data; + struct cppi5_host_desc_t *desc_tx; + struct sk_buff *skb; + void **swdata; + + desc_tx = k3_cppi_desc_pool_dma2virt(tx_chn->desc_pool, desc_dma); + swdata = cppi5_hdesc_get_swdata(desc_tx); + skb = *(swdata); + prueth_xmit_free(tx_chn, desc_tx); + + dev_kfree_skb_any(skb); +} + +irqreturn_t prueth_rx_irq(int irq, void *dev_id) +{ + struct prueth_emac *emac = dev_id; + + disable_irq_nosync(irq); + napi_schedule(&emac->napi_rx); + + return IRQ_HANDLED; +} +EXPORT_SYMBOL_GPL(prueth_rx_irq); + +void prueth_cleanup_tx_ts(struct prueth_emac *emac) +{ + int i; + + for (i = 0; i < PRUETH_MAX_TX_TS_REQUESTS; i++) { + if (emac->tx_ts_skb[i]) { + dev_kfree_skb_any(emac->tx_ts_skb[i]); + emac->tx_ts_skb[i] = NULL; + } + } +} +EXPORT_SYMBOL_GPL(prueth_cleanup_tx_ts); + +int icssg_napi_rx_poll(struct napi_struct *napi_rx, int budget) +{ + struct prueth_emac *emac = prueth_napi_to_emac(napi_rx); + int rx_flow = emac->is_sr1 ? + PRUETH_RX_FLOW_DATA_SR1 : PRUETH_RX_FLOW_DATA; + int flow = emac->is_sr1 ? + PRUETH_MAX_RX_FLOWS_SR1 : PRUETH_MAX_RX_FLOWS; + int num_rx = 0; + int cur_budget; + int ret; + + while (flow--) { + cur_budget = budget - num_rx; + + while (cur_budget--) { + ret = emac_rx_packet(emac, flow); + if (ret) + break; + num_rx++; + } + + if (num_rx >= budget) + break; + } + + if (num_rx < budget && napi_complete_done(napi_rx, num_rx)) { + if (unlikely(emac->rx_pace_timeout_ns)) { + hrtimer_start(&emac->rx_hrtimer, + ns_to_ktime(emac->rx_pace_timeout_ns), + HRTIMER_MODE_REL_PINNED); + } else { + enable_irq(emac->rx_chns.irq[rx_flow]); + } + } + + return num_rx; +} +EXPORT_SYMBOL_GPL(icssg_napi_rx_poll); + +int prueth_prepare_rx_chan(struct prueth_emac *emac, + struct prueth_rx_chn *chn, + int buf_size) +{ + struct sk_buff *skb; + int i, ret; + + for (i = 0; i < chn->descs_num; i++) { + skb = __netdev_alloc_skb_ip_align(NULL, buf_size, GFP_KERNEL); + if (!skb) + return -ENOMEM; + + ret = prueth_dma_rx_push(emac, skb, chn); + if (ret < 0) { + netdev_err(emac->ndev, + "cannot submit skb for rx chan %s ret %d\n", + chn->name, ret); + kfree_skb(skb); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(prueth_prepare_rx_chan); + +void prueth_reset_tx_chan(struct prueth_emac *emac, int ch_num, + bool free_skb) +{ + int i; + + for (i = 0; i < ch_num; i++) { + if (free_skb) + k3_udma_glue_reset_tx_chn(emac->tx_chns[i].tx_chn, + &emac->tx_chns[i], + prueth_tx_cleanup); + k3_udma_glue_disable_tx_chn(emac->tx_chns[i].tx_chn); + } +} +EXPORT_SYMBOL_GPL(prueth_reset_tx_chan); + +void prueth_reset_rx_chan(struct prueth_rx_chn *chn, + int num_flows, bool disable) +{ + int i; + + for (i = 0; i < num_flows; i++) + k3_udma_glue_reset_rx_chn(chn->rx_chn, i, chn, + prueth_rx_cleanup, !!i); + if (disable) + k3_udma_glue_disable_rx_chn(chn->rx_chn); +} +EXPORT_SYMBOL_GPL(prueth_reset_rx_chan); + +void icssg_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue) +{ + ndev->stats.tx_errors++; +} +EXPORT_SYMBOL_GPL(icssg_ndo_tx_timeout); + +static int emac_set_ts_config(struct net_device *ndev, struct ifreq *ifr) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct hwtstamp_config config; + + if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) + return -EFAULT; + + switch (config.tx_type) { + case HWTSTAMP_TX_OFF: + emac->tx_ts_enabled = 0; + break; + case HWTSTAMP_TX_ON: + emac->tx_ts_enabled = 1; + break; + default: + return -ERANGE; + } + + switch (config.rx_filter) { + case HWTSTAMP_FILTER_NONE: + emac->rx_ts_enabled = 0; + break; + case HWTSTAMP_FILTER_ALL: + case HWTSTAMP_FILTER_SOME: + case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: + case HWTSTAMP_FILTER_NTP_ALL: + emac->rx_ts_enabled = 1; + config.rx_filter = HWTSTAMP_FILTER_ALL; + break; + default: + return -ERANGE; + } + + return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? + -EFAULT : 0; +} + +static int emac_get_ts_config(struct net_device *ndev, struct ifreq *ifr) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct hwtstamp_config config; + + config.flags = 0; + config.tx_type = emac->tx_ts_enabled ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; + config.rx_filter = emac->rx_ts_enabled ? HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE; + + return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? + -EFAULT : 0; +} + +int icssg_ndo_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd) +{ + switch (cmd) { + case SIOCGHWTSTAMP: + return emac_get_ts_config(ndev, ifr); + case SIOCSHWTSTAMP: + return emac_set_ts_config(ndev, ifr); + default: + break; + } + + return phy_do_ioctl(ndev, ifr, cmd); +} +EXPORT_SYMBOL_GPL(icssg_ndo_ioctl); + +void icssg_ndo_get_stats64(struct net_device *ndev, + struct rtnl_link_stats64 *stats) +{ + struct prueth_emac *emac = netdev_priv(ndev); + + emac_update_hardware_stats(emac); + + stats->rx_packets = emac_get_stat_by_name(emac, "rx_packets"); + stats->rx_bytes = emac_get_stat_by_name(emac, "rx_bytes"); + stats->tx_packets = emac_get_stat_by_name(emac, "tx_packets"); + stats->tx_bytes = emac_get_stat_by_name(emac, "tx_bytes"); + stats->rx_crc_errors = emac_get_stat_by_name(emac, "rx_crc_errors"); + stats->rx_over_errors = emac_get_stat_by_name(emac, "rx_over_errors"); + stats->multicast = emac_get_stat_by_name(emac, "rx_multicast_frames"); + + stats->rx_errors = ndev->stats.rx_errors; + stats->rx_dropped = ndev->stats.rx_dropped; + stats->tx_errors = ndev->stats.tx_errors; + stats->tx_dropped = ndev->stats.tx_dropped; +} +EXPORT_SYMBOL_GPL(icssg_ndo_get_stats64); + +int icssg_ndo_get_phys_port_name(struct net_device *ndev, char *name, + size_t len) +{ + struct prueth_emac *emac = netdev_priv(ndev); + int ret; + + ret = snprintf(name, len, "p%d", emac->port_id); + if (ret >= len) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL_GPL(icssg_ndo_get_phys_port_name); + +/* get emac_port corresponding to eth_node name */ +int prueth_node_port(struct device_node *eth_node) +{ + u32 port_id; + int ret; + + ret = of_property_read_u32(eth_node, "reg", &port_id); + if (ret) + return ret; + + if (port_id == 0) + return PRUETH_PORT_MII0; + else if (port_id == 1) + return PRUETH_PORT_MII1; + else + return PRUETH_PORT_INVALID; +} +EXPORT_SYMBOL_GPL(prueth_node_port); + +/* get MAC instance corresponding to eth_node name */ +int prueth_node_mac(struct device_node *eth_node) +{ + u32 port_id; + int ret; + + ret = of_property_read_u32(eth_node, "reg", &port_id); + if (ret) + return ret; + + if (port_id == 0) + return PRUETH_MAC0; + else if (port_id == 1) + return PRUETH_MAC1; + else + return PRUETH_MAC_INVALID; +} +EXPORT_SYMBOL_GPL(prueth_node_mac); + +void prueth_netdev_exit(struct prueth *prueth, + struct device_node *eth_node) +{ + struct prueth_emac *emac; + enum prueth_mac mac; + + mac = prueth_node_mac(eth_node); + if (mac == PRUETH_MAC_INVALID) + return; + + emac = prueth->emac[mac]; + if (!emac) + return; + + if (of_phy_is_fixed_link(emac->phy_node)) + of_phy_deregister_fixed_link(emac->phy_node); + + netif_napi_del(&emac->napi_rx); + + pruss_release_mem_region(prueth->pruss, &emac->dram); + destroy_workqueue(emac->cmd_wq); + free_netdev(emac->ndev); + prueth->emac[mac] = NULL; +} +EXPORT_SYMBOL_GPL(prueth_netdev_exit); + +int prueth_get_cores(struct prueth *prueth, int slice, bool is_sr1) +{ + struct device *dev = prueth->dev; + enum pruss_pru_id pruss_id; + struct device_node *np; + int idx = -1, ret; + + np = dev->of_node; + + switch (slice) { + case ICSS_SLICE0: + idx = 0; + break; + case ICSS_SLICE1: + idx = is_sr1 ? 2 : 3; + break; + default: + return -EINVAL; + } + + prueth->pru[slice] = pru_rproc_get(np, idx, &pruss_id); + if (IS_ERR(prueth->pru[slice])) { + ret = PTR_ERR(prueth->pru[slice]); + prueth->pru[slice] = NULL; + return dev_err_probe(dev, ret, "unable to get PRU%d\n", slice); + } + prueth->pru_id[slice] = pruss_id; + + idx++; + prueth->rtu[slice] = pru_rproc_get(np, idx, NULL); + if (IS_ERR(prueth->rtu[slice])) { + ret = PTR_ERR(prueth->rtu[slice]); + prueth->rtu[slice] = NULL; + return dev_err_probe(dev, ret, "unable to get RTU%d\n", slice); + } + + if (is_sr1) + return 0; + + idx++; + prueth->txpru[slice] = pru_rproc_get(np, idx, NULL); + if (IS_ERR(prueth->txpru[slice])) { + ret = PTR_ERR(prueth->txpru[slice]); + prueth->txpru[slice] = NULL; + return dev_err_probe(dev, ret, "unable to get TX_PRU%d\n", slice); + } + + return 0; +} +EXPORT_SYMBOL_GPL(prueth_get_cores); + +void prueth_put_cores(struct prueth *prueth, int slice) +{ + if (prueth->txpru[slice]) + pru_rproc_put(prueth->txpru[slice]); + + if (prueth->rtu[slice]) + pru_rproc_put(prueth->rtu[slice]); + + if (prueth->pru[slice]) + pru_rproc_put(prueth->pru[slice]); +} +EXPORT_SYMBOL_GPL(prueth_put_cores); + +#ifdef CONFIG_PM_SLEEP +static int prueth_suspend(struct device *dev) +{ + struct prueth *prueth = dev_get_drvdata(dev); + struct net_device *ndev; + int i, ret; + + for (i = 0; i < PRUETH_NUM_MACS; i++) { + ndev = prueth->registered_netdevs[i]; + + if (!ndev) + continue; + + if (netif_running(ndev)) { + netif_device_detach(ndev); + ret = ndev->netdev_ops->ndo_stop(ndev); + if (ret < 0) { + netdev_err(ndev, "failed to stop: %d", ret); + return ret; + } + } + } + + return 0; +} + +static int prueth_resume(struct device *dev) +{ + struct prueth *prueth = dev_get_drvdata(dev); + struct net_device *ndev; + int i, ret; + + for (i = 0; i < PRUETH_NUM_MACS; i++) { + ndev = prueth->registered_netdevs[i]; + + if (!ndev) + continue; + + if (netif_running(ndev)) { + ret = ndev->netdev_ops->ndo_open(ndev); + if (ret < 0) { + netdev_err(ndev, "failed to start: %d", ret); + return ret; + } + netif_device_attach(ndev); + } + } + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +const struct dev_pm_ops prueth_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(prueth_suspend, prueth_resume) +}; +EXPORT_SYMBOL_GPL(prueth_dev_pm_ops); + +MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>"); +MODULE_AUTHOR("Md Danish Anwar <danishanwar@ti.com>"); +MODULE_DESCRIPTION("PRUSS ICSSG Ethernet Driver Common Module"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c index 99de8a40ed60..ddfd1c02a885 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_config.c +++ b/drivers/net/ethernet/ti/icssg/icssg_config.c @@ -20,6 +20,8 @@ /* IPG is in core_clk cycles */ #define MII_RT_TX_IPG_100M 0x17 #define MII_RT_TX_IPG_1G 0xb +#define MII_RT_TX_IPG_100M_SR1 0x166 +#define MII_RT_TX_IPG_1G_SR1 0x1a #define ICSSG_QUEUES_MAX 64 #define ICSSG_QUEUE_OFFSET 0xd00 @@ -105,28 +107,49 @@ static const struct map hwq_map[2][ICSSG_NUM_OTHER_QUEUES] = { }, }; +static void icssg_config_mii_init_fw_offload(struct prueth_emac *emac) +{ + struct prueth *prueth = emac->prueth; + int mii = prueth_emac_slice(emac); + u32 txcfg_reg, pcnt_reg, txcfg; + struct regmap *mii_rt; + + mii_rt = prueth->mii_rt; + + txcfg_reg = (mii == ICSS_MII0) ? PRUSS_MII_RT_TXCFG0 : + PRUSS_MII_RT_TXCFG1; + pcnt_reg = (mii == ICSS_MII0) ? PRUSS_MII_RT_RX_PCNT0 : + PRUSS_MII_RT_RX_PCNT1; + + txcfg = PRUSS_MII_RT_TXCFG_TX_ENABLE | + PRUSS_MII_RT_TXCFG_TX_AUTO_PREAMBLE | + PRUSS_MII_RT_TXCFG_TX_IPG_WIRE_CLK_EN; + + if (emac->phy_if == PHY_INTERFACE_MODE_MII && mii == ICSS_MII1) + txcfg |= PRUSS_MII_RT_TXCFG_TX_MUX_SEL; + else if (emac->phy_if != PHY_INTERFACE_MODE_MII && mii == ICSS_MII0) + txcfg |= PRUSS_MII_RT_TXCFG_TX_MUX_SEL; + + regmap_write(mii_rt, txcfg_reg, txcfg); + regmap_write(mii_rt, pcnt_reg, 0x1); +} + static void icssg_config_mii_init(struct prueth_emac *emac) { - u32 rxcfg, txcfg, rxcfg_reg, txcfg_reg, pcnt_reg; struct prueth *prueth = emac->prueth; int slice = prueth_emac_slice(emac); + u32 txcfg, txcfg_reg, pcnt_reg; struct regmap *mii_rt; mii_rt = prueth->mii_rt; - rxcfg_reg = (slice == ICSS_MII0) ? PRUSS_MII_RT_RXCFG0 : - PRUSS_MII_RT_RXCFG1; txcfg_reg = (slice == ICSS_MII0) ? PRUSS_MII_RT_TXCFG0 : PRUSS_MII_RT_TXCFG1; pcnt_reg = (slice == ICSS_MII0) ? PRUSS_MII_RT_RX_PCNT0 : PRUSS_MII_RT_RX_PCNT1; - rxcfg = MII_RXCFG_DEFAULT; txcfg = MII_TXCFG_DEFAULT; - if (slice == ICSS_MII1) - rxcfg |= PRUSS_MII_RT_RXCFG_RX_MUX_SEL; - /* In MII mode TX lines swapped inside ICSSG, so TX_MUX_SEL cfg need * to be swapped also comparing to RGMII mode. */ @@ -135,7 +158,6 @@ static void icssg_config_mii_init(struct prueth_emac *emac) else if (emac->phy_if != PHY_INTERFACE_MODE_MII && slice == ICSS_MII1) txcfg |= PRUSS_MII_RT_TXCFG_TX_MUX_SEL; - regmap_write(mii_rt, rxcfg_reg, rxcfg); regmap_write(mii_rt, txcfg_reg, txcfg); regmap_write(mii_rt, pcnt_reg, 0x1); } @@ -202,24 +224,31 @@ void icssg_config_ipg(struct prueth_emac *emac) { struct prueth *prueth = emac->prueth; int slice = prueth_emac_slice(emac); + u32 ipg; switch (emac->speed) { case SPEED_1000: - icssg_mii_update_ipg(prueth->mii_rt, slice, MII_RT_TX_IPG_1G); + ipg = emac->is_sr1 ? MII_RT_TX_IPG_1G_SR1 : MII_RT_TX_IPG_1G; break; case SPEED_100: - icssg_mii_update_ipg(prueth->mii_rt, slice, MII_RT_TX_IPG_100M); + ipg = emac->is_sr1 ? MII_RT_TX_IPG_100M_SR1 : MII_RT_TX_IPG_100M; break; case SPEED_10: + /* Firmware hardcodes IPG for SR1.0 */ + if (emac->is_sr1) + return; /* IPG for 10M is same as 100M */ - icssg_mii_update_ipg(prueth->mii_rt, slice, MII_RT_TX_IPG_100M); + ipg = MII_RT_TX_IPG_100M; break; default: /* Other links speeds not supported */ netdev_err(emac->ndev, "Unsupported link speed\n"); return; } + + icssg_mii_update_ipg(prueth->mii_rt, slice, ipg); } +EXPORT_SYMBOL_GPL(icssg_config_ipg); static void emac_r30_cmd_init(struct prueth_emac *emac) { @@ -249,6 +278,66 @@ static int emac_r30_is_done(struct prueth_emac *emac) return 1; } +static int prueth_fw_offload_buffer_setup(struct prueth_emac *emac) +{ + struct icssg_buffer_pool_cfg __iomem *bpool_cfg; + struct icssg_rxq_ctx __iomem *rxq_ctx; + struct prueth *prueth = emac->prueth; + int slice = prueth_emac_slice(emac); + u32 addr; + int i; + + addr = lower_32_bits(prueth->msmcram.pa); + if (slice) + addr += PRUETH_NUM_BUF_POOLS * PRUETH_EMAC_BUF_POOL_SIZE; + + if (addr % SZ_64K) { + dev_warn(prueth->dev, "buffer pool needs to be 64KB aligned\n"); + return -EINVAL; + } + + bpool_cfg = emac->dram.va + BUFFER_POOL_0_ADDR_OFFSET; + /* workaround for f/w bug. bpool 0 needs to be initialized */ + for (i = 0; i < PRUETH_NUM_BUF_POOLS; i++) { + writel(addr, &bpool_cfg[i].addr); + writel(PRUETH_EMAC_BUF_POOL_SIZE, &bpool_cfg[i].len); + addr += PRUETH_EMAC_BUF_POOL_SIZE; + } + + if (!slice) + addr += PRUETH_NUM_BUF_POOLS * PRUETH_EMAC_BUF_POOL_SIZE; + else + addr += PRUETH_SW_NUM_BUF_POOLS_HOST * PRUETH_SW_BUF_POOL_SIZE_HOST; + + for (i = PRUETH_NUM_BUF_POOLS; + i < 2 * PRUETH_SW_NUM_BUF_POOLS_HOST + PRUETH_NUM_BUF_POOLS; + i++) { + /* The driver only uses first 4 queues per PRU so only initialize them */ + if (i % PRUETH_SW_NUM_BUF_POOLS_HOST < PRUETH_SW_NUM_BUF_POOLS_PER_PRU) { + writel(addr, &bpool_cfg[i].addr); + writel(PRUETH_SW_BUF_POOL_SIZE_HOST, &bpool_cfg[i].len); + addr += PRUETH_SW_BUF_POOL_SIZE_HOST; + } else { + writel(0, &bpool_cfg[i].addr); + writel(0, &bpool_cfg[i].len); + } + } + + if (!slice) + addr += PRUETH_SW_NUM_BUF_POOLS_HOST * PRUETH_SW_BUF_POOL_SIZE_HOST; + else + addr += PRUETH_EMAC_RX_CTX_BUF_SIZE; + + rxq_ctx = emac->dram.va + HOST_RX_Q_PRE_CONTEXT_OFFSET; + for (i = 0; i < 3; i++) + writel(addr, &rxq_ctx->start[i]); + + addr += PRUETH_EMAC_RX_CTX_BUF_SIZE; + writel(addr - SZ_2K, &rxq_ctx->end); + + return 0; +} + static int prueth_emac_buffer_setup(struct prueth_emac *emac) { struct icssg_buffer_pool_cfg __iomem *bpool_cfg; @@ -308,22 +397,53 @@ static int prueth_emac_buffer_setup(struct prueth_emac *emac) return 0; } -static void icssg_init_emac_mode(struct prueth *prueth) +void icssg_init_emac_mode(struct prueth *prueth) { /* When the device is configured as a bridge and it is being brought * back to the emac mode, the host mac address has to be set as 0. */ + u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET; + int i; u8 mac[ETH_ALEN] = { 0 }; - if (prueth->emacs_initialized) - return; - - regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1, - SMEM_VLAN_OFFSET_MASK, 0); - regmap_write(prueth->miig_rt, FDB_GEN_CFG2, 0); + /* Set VLAN TABLE address base */ + regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1, SMEM_VLAN_OFFSET_MASK, + addr << SMEM_VLAN_OFFSET); + /* Set enable VLAN aware mode, and FDBs for all PRUs */ + regmap_write(prueth->miig_rt, FDB_GEN_CFG2, (FDB_PRU0_EN | FDB_PRU1_EN | FDB_HOST_EN)); + prueth->vlan_tbl = (struct prueth_vlan_tbl __force *)(prueth->shram.va + + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET); + for (i = 0; i < SZ_4K - 1; i++) { + prueth->vlan_tbl[i].fid = i; + prueth->vlan_tbl[i].fid_c1 = 0; + } /* Clear host MAC address */ icssg_class_set_host_mac_addr(prueth->miig_rt, mac); } +EXPORT_SYMBOL_GPL(icssg_init_emac_mode); + +void icssg_init_fw_offload_mode(struct prueth *prueth) +{ + u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET; + int i; + + /* Set VLAN TABLE address base */ + regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1, SMEM_VLAN_OFFSET_MASK, + addr << SMEM_VLAN_OFFSET); + /* Set enable VLAN aware mode, and FDBs for all PRUs */ + regmap_write(prueth->miig_rt, FDB_GEN_CFG2, FDB_EN_ALL); + prueth->vlan_tbl = (struct prueth_vlan_tbl __force *)(prueth->shram.va + + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET); + for (i = 0; i < SZ_4K - 1; i++) { + prueth->vlan_tbl[i].fid = i; + prueth->vlan_tbl[i].fid_c1 = 0; + } + + if (prueth->hw_bridge_dev) + icssg_class_set_host_mac_addr(prueth->miig_rt, prueth->hw_bridge_dev->dev_addr); + icssg_set_pvid(prueth, prueth->default_vlan, PRUETH_PORT_HOST); +} +EXPORT_SYMBOL_GPL(icssg_init_fw_offload_mode); int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) { @@ -331,8 +451,6 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) struct icssg_flow_cfg __iomem *flow_cfg; int ret; - icssg_init_emac_mode(prueth); - memset_io(config, 0, TAS_GATE_MASK_LIST0); icssg_miig_queues_init(prueth, slice); @@ -345,7 +463,10 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) regmap_update_bits(prueth->miig_rt, ICSSG_CFG_OFFSET, ICSSG_CFG_DEFAULT, ICSSG_CFG_DEFAULT); icssg_miig_set_interface_mode(prueth->miig_rt, slice, emac->phy_if); - icssg_config_mii_init(emac); + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) + icssg_config_mii_init_fw_offload(emac); + else + icssg_config_mii_init(emac); icssg_config_ipg(emac); icssg_update_rgmii_cfg(prueth->miig_rt, emac); @@ -368,7 +489,10 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) writeb(0, config + SPL_PKT_DEFAULT_PRIORITY); writeb(0, config + QUEUE_NUM_UNTAGGED); - ret = prueth_emac_buffer_setup(emac); + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) + ret = prueth_fw_offload_buffer_setup(emac); + else + ret = prueth_emac_buffer_setup(emac); if (ret) return ret; @@ -376,6 +500,7 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) return 0; } +EXPORT_SYMBOL_GPL(icssg_config); /* Bitmask for ICSSG r30 commands */ static const struct icssg_r30_cmd emac_r32_bitmask[] = { @@ -397,11 +522,13 @@ static const struct icssg_r30_cmd emac_r32_bitmask[] = { {{EMAC_NONE, 0xffff4000, EMAC_NONE, EMAC_NONE}}, /* Preemption on Tx ENABLE*/ {{EMAC_NONE, 0xbfff0000, EMAC_NONE, EMAC_NONE}}, /* Preemption on Tx DISABLE*/ {{0xffff0010, EMAC_NONE, 0xffff0010, EMAC_NONE}}, /* VLAN AWARE*/ - {{0xffef0000, EMAC_NONE, 0xffef0000, EMAC_NONE}} /* VLAN UNWARE*/ + {{0xffef0000, EMAC_NONE, 0xffef0000, EMAC_NONE}}, /* VLAN UNWARE*/ + {{0xffff2000, EMAC_NONE, EMAC_NONE, EMAC_NONE}}, /* HSR_RX_OFFLOAD_ENABLE */ + {{0xdfff0000, EMAC_NONE, EMAC_NONE, EMAC_NONE}} /* HSR_RX_OFFLOAD_DISABLE */ }; -int emac_set_port_state(struct prueth_emac *emac, - enum icssg_port_state_cmd cmd) +int icssg_set_port_state(struct prueth_emac *emac, + enum icssg_port_state_cmd cmd) { struct icssg_r30_cmd __iomem *p; int ret = -ETIMEDOUT; @@ -432,6 +559,7 @@ int emac_set_port_state(struct prueth_emac *emac, return ret; } +EXPORT_SYMBOL_GPL(icssg_set_port_state); void icssg_config_half_duplex(struct prueth_emac *emac) { @@ -443,6 +571,7 @@ void icssg_config_half_duplex(struct prueth_emac *emac) val = get_random_u32(); writel(val, emac->dram.va + HD_RAND_SEED_OFFSET); } +EXPORT_SYMBOL_GPL(icssg_config_half_duplex); void icssg_config_set_speed(struct prueth_emac *emac) { @@ -469,3 +598,206 @@ void icssg_config_set_speed(struct prueth_emac *emac) writeb(fw_speed, emac->dram.va + PORT_LINK_SPEED_OFFSET); } +EXPORT_SYMBOL_GPL(icssg_config_set_speed); + +int icssg_send_fdb_msg(struct prueth_emac *emac, struct mgmt_cmd *cmd, + struct mgmt_cmd_rsp *rsp) +{ + struct prueth *prueth = emac->prueth; + int slice = prueth_emac_slice(emac); + int addr, ret; + + addr = icssg_queue_pop(prueth, slice == 0 ? + ICSSG_CMD_POP_SLICE0 : ICSSG_CMD_POP_SLICE1); + if (addr < 0) + return addr; + + /* First 4 bytes have FW owned buffer linking info which should + * not be touched + */ + memcpy_toio(prueth->shram.va + addr + 4, cmd, sizeof(*cmd)); + icssg_queue_push(prueth, slice == 0 ? + ICSSG_CMD_PUSH_SLICE0 : ICSSG_CMD_PUSH_SLICE1, addr); + ret = read_poll_timeout(icssg_queue_pop, addr, addr >= 0, + 2000, 20000000, false, prueth, slice == 0 ? + ICSSG_RSP_POP_SLICE0 : ICSSG_RSP_POP_SLICE1); + if (ret) { + netdev_err(emac->ndev, "Timedout sending HWQ message\n"); + return ret; + } + + memcpy_fromio(rsp, prueth->shram.va + addr, sizeof(*rsp)); + /* Return buffer back for to pool */ + icssg_queue_push(prueth, slice == 0 ? + ICSSG_RSP_PUSH_SLICE0 : ICSSG_RSP_PUSH_SLICE1, addr); + + return 0; +} +EXPORT_SYMBOL_GPL(icssg_send_fdb_msg); + +static void icssg_fdb_setup(struct prueth_emac *emac, struct mgmt_cmd *fdb_cmd, + const unsigned char *addr, u8 fid, int cmd) +{ + int slice = prueth_emac_slice(emac); + u8 mac_fid[ETH_ALEN + 2]; + u16 fdb_slot; + + ether_addr_copy(mac_fid, addr); + + /* 1-1 VID-FID mapping is already setup */ + mac_fid[ETH_ALEN] = fid; + mac_fid[ETH_ALEN + 1] = 0; + + fdb_slot = bitrev32(crc32_le(0, mac_fid, 8)) & PRUETH_SWITCH_FDB_MASK; + + fdb_cmd->header = ICSSG_FW_MGMT_CMD_HEADER; + fdb_cmd->type = ICSSG_FW_MGMT_FDB_CMD_TYPE; + fdb_cmd->seqnum = ++(emac->prueth->icssg_hwcmdseq); + fdb_cmd->param = cmd; + fdb_cmd->param |= (slice << 4); + + memcpy(&fdb_cmd->cmd_args[0], addr, 4); + memcpy(&fdb_cmd->cmd_args[1], &addr[4], 2); + fdb_cmd->cmd_args[2] = fdb_slot; + + netdev_dbg(emac->ndev, "MAC %pM slot %X FID %X\n", addr, fdb_slot, fid); +} + +int icssg_fdb_add_del(struct prueth_emac *emac, const unsigned char *addr, + u8 vid, u8 fid_c2, bool add) +{ + struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 }; + struct mgmt_cmd fdb_cmd = { 0 }; + u8 fid = vid; + int ret; + + icssg_fdb_setup(emac, &fdb_cmd, addr, fid, add ? ICSS_CMD_ADD_FDB : ICSS_CMD_DEL_FDB); + + fid_c2 |= ICSSG_FDB_ENTRY_VALID; + fdb_cmd.cmd_args[1] |= ((fid << 16) | (fid_c2 << 24)); + + ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp); + if (ret) + return ret; + + WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum); + if (fdb_cmd_rsp.status == 1) + return 0; + + return -EINVAL; +} +EXPORT_SYMBOL_GPL(icssg_fdb_add_del); + +int icssg_fdb_lookup(struct prueth_emac *emac, const unsigned char *addr, + u8 vid) +{ + struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 }; + struct mgmt_cmd fdb_cmd = { 0 }; + struct prueth_fdb_slot *slot; + u8 fid = vid; + int ret, i; + + icssg_fdb_setup(emac, &fdb_cmd, addr, fid, ICSS_CMD_GET_FDB_SLOT); + + fdb_cmd.cmd_args[1] |= fid << 16; + + ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp); + if (ret) + return ret; + + WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum); + + slot = (struct prueth_fdb_slot __force *)(emac->dram.va + FDB_CMD_BUFFER); + for (i = 0; i < 4; i++) { + if (ether_addr_equal(addr, slot->mac) && vid == slot->fid) + return (slot->fid_c2 & ~ICSSG_FDB_ENTRY_VALID); + slot++; + } + + return 0; +} +EXPORT_SYMBOL_GPL(icssg_fdb_lookup); + +void icssg_vtbl_modify(struct prueth_emac *emac, u8 vid, u8 port_mask, + u8 untag_mask, bool add) +{ + struct prueth *prueth = emac->prueth; + struct prueth_vlan_tbl *tbl; + u8 fid_c1; + + tbl = prueth->vlan_tbl; + spin_lock(&prueth->vtbl_lock); + fid_c1 = tbl[vid].fid_c1; + + /* FID_C1: bit0..2 port membership mask, + * bit3..5 tagging mask for each port + * bit6 Stream VID (not handled currently) + * bit7 MC flood (not handled currently) + */ + if (add) { + fid_c1 |= (port_mask | port_mask << 3); + fid_c1 &= ~(untag_mask << 3); + } else { + fid_c1 &= ~(port_mask | port_mask << 3); + } + + tbl[vid].fid_c1 = fid_c1; + spin_unlock(&prueth->vtbl_lock); +} +EXPORT_SYMBOL_GPL(icssg_vtbl_modify); + +u16 icssg_get_pvid(struct prueth_emac *emac) +{ + struct prueth *prueth = emac->prueth; + u32 pvid; + + if (emac->port_id == PRUETH_PORT_MII0) + pvid = readl(prueth->shram.va + EMAC_ICSSG_SWITCH_PORT1_DEFAULT_VLAN_OFFSET); + else + pvid = readl(prueth->shram.va + EMAC_ICSSG_SWITCH_PORT2_DEFAULT_VLAN_OFFSET); + + pvid = pvid >> 24; + + return pvid; +} +EXPORT_SYMBOL_GPL(icssg_get_pvid); + +void icssg_set_pvid(struct prueth *prueth, u8 vid, u8 port) +{ + u32 pvid; + + /* only 256 VLANs are supported */ + pvid = (u32 __force)cpu_to_be32((ETH_P_8021Q << 16) | (vid & 0xff)); + + if (port == PRUETH_PORT_MII0) + writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT1_DEFAULT_VLAN_OFFSET); + else if (port == PRUETH_PORT_MII1) + writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT2_DEFAULT_VLAN_OFFSET); + else + writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT0_DEFAULT_VLAN_OFFSET); +} +EXPORT_SYMBOL_GPL(icssg_set_pvid); + +int emac_fdb_flow_id_updated(struct prueth_emac *emac) +{ + struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 }; + int slice = prueth_emac_slice(emac); + struct mgmt_cmd fdb_cmd = { 0 }; + int ret; + + fdb_cmd.header = ICSSG_FW_MGMT_CMD_HEADER; + fdb_cmd.type = ICSSG_FW_MGMT_FDB_CMD_TYPE_RX_FLOW; + fdb_cmd.seqnum = ++(emac->prueth->icssg_hwcmdseq); + fdb_cmd.param = 0; + + fdb_cmd.param |= (slice << 4); + fdb_cmd.cmd_args[0] = 0; + + ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp); + if (ret) + return ret; + + WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum); + return fdb_cmd_rsp.status == 1 ? 0 : -EINVAL; +} +EXPORT_SYMBOL_GPL(emac_fdb_flow_id_updated); diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.h b/drivers/net/ethernet/ti/icssg/icssg_config.h index 43eb0922172a..c884e9fa099e 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_config.h +++ b/drivers/net/ethernet/ti/icssg/icssg_config.h @@ -35,6 +35,15 @@ struct icssg_flow_cfg { (2 * (PRUETH_EMAC_BUF_POOL_SIZE * PRUETH_NUM_BUF_POOLS + \ PRUETH_EMAC_RX_CTX_BUF_SIZE * 2)) +#define PRUETH_SW_BUF_POOL_SIZE_HOST SZ_4K +#define PRUETH_SW_NUM_BUF_POOLS_HOST 8 +#define PRUETH_SW_NUM_BUF_POOLS_PER_PRU 4 +#define MSMC_RAM_SIZE_SWITCH_MODE \ + (MSMC_RAM_SIZE + \ + (2 * PRUETH_SW_BUF_POOL_SIZE_HOST * PRUETH_SW_NUM_BUF_POOLS_HOST)) + +#define PRUETH_SWITCH_FDB_MASK ((SIZE_OF_FDB / NUMBER_OF_FDB_BUCKET_ENTRIES) - 1) + struct icssg_rxq_ctx { __le32 start[3]; __le32 end; @@ -46,6 +55,7 @@ struct icssg_rxq_ctx { #define ICSSG_FW_MGMT_FDB_CMD_TYPE 0x03 #define ICSSG_FW_MGMT_CMD_TYPE 0x04 #define ICSSG_FW_MGMT_PKT 0x80000000 +#define ICSSG_FW_MGMT_FDB_CMD_TYPE_RX_FLOW 0x05 struct icssg_r30_cmd { u32 cmd[4]; @@ -71,6 +81,8 @@ enum icssg_port_state_cmd { ICSSG_EMAC_PORT_PREMPT_TX_DISABLE, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE, ICSSG_EMAC_PORT_VLAN_AWARE_DISABLE, + ICSSG_EMAC_HSR_RX_OFFLOAD_ENABLE, + ICSSG_EMAC_HSR_RX_OFFLOAD_DISABLE, ICSSG_EMAC_PORT_MAX_COMMANDS }; @@ -109,6 +121,62 @@ enum icssg_port_state_cmd { #define ICSSG_FLAG_MASK 0xff00ffff +/* SR1.0-specific bits */ +#define PRUETH_MAX_RX_FLOWS_SR1 4 /* excluding default flow */ +#define PRUETH_RX_FLOW_DATA_SR1 3 /* highest priority flow */ +#define PRUETH_MAX_RX_MGM_DESC_SR1 8 +#define PRUETH_MAX_RX_MGM_FLOWS_SR1 2 /* excluding default flow */ +#define PRUETH_RX_MGM_FLOW_RESPONSE_SR1 0 +#define PRUETH_RX_MGM_FLOW_TIMESTAMP_SR1 1 + +#define PRUETH_NUM_BUF_POOLS_SR1 16 +#define PRUETH_EMAC_BUF_POOL_START_SR1 8 +#define PRUETH_EMAC_BUF_POOL_MIN_SIZE_SR1 128 +#define PRUETH_EMAC_BUF_SIZE_SR1 1536 +#define PRUETH_EMAC_NUM_BUF_SR1 4 +#define PRUETH_EMAC_BUF_POOL_SIZE_SR1 (PRUETH_EMAC_NUM_BUF_SR1 * \ + PRUETH_EMAC_BUF_SIZE_SR1) +#define MSMC_RAM_SIZE_SR1 (SZ_64K + SZ_32K + SZ_2K) /* 0x1880 x 8 x 2 */ + +struct icssg_sr1_config { + __le32 status; /* Firmware status */ + __le32 addr_lo; /* MSMC Buffer pool base address low. */ + __le32 addr_hi; /* MSMC Buffer pool base address high. Must be 0 */ + __le32 tx_buf_sz[16]; /* Array of buffer pool sizes */ + __le32 num_tx_threads; /* Number of active egress threads, 1 to 4 */ + __le32 tx_rate_lim_en; /* Bitmask: Egress rate limit en per thread */ + __le32 rx_flow_id; /* RX flow id for first rx ring */ + __le32 rx_mgr_flow_id; /* RX flow id for the first management ring */ + __le32 flags; /* TBD */ + __le32 n_burst; /* for debug */ + __le32 rtu_status; /* RTU status */ + __le32 info; /* reserved */ + __le32 reserve; + __le32 rand_seed; /* Used for the random number generation at fw */ +} __packed; + +/* SR1.0 shutdown command to stop processing at firmware. + * Command format: 0x8101ss00, where + * - ss: sequence number. Currently not used by driver. + */ +#define ICSSG_SHUTDOWN_CMD_SR1 0x81010000 + +/* SR1.0 pstate speed/duplex command to set speed and duplex settings + * in firmware. + * Command format: 0x8102ssPN, where + * - ss: sequence number. Currently not used by driver. + * - P: port number (for switch mode). + * - N: Speed/Duplex state: + * 0x0 - 10Mbps/Half duplex; + * 0x8 - 10Mbps/Full duplex; + * 0x2 - 100Mbps/Half duplex; + * 0xa - 100Mbps/Full duplex; + * 0xc - 1Gbps/Full duplex; + * NOTE: The above are the same value as bits [3..1](slice 0) + * or bits [7..5](slice 1) of RGMII CFG register. + */ +#define ICSSG_PSTATE_SPEED_DUPLEX_CMD_SR1 0x81020000 + struct icssg_setclock_desc { u8 request; u8 restore; @@ -146,6 +214,23 @@ struct icssg_setclock_desc { #define ICSSG_TS_PUSH_SLICE0 40 #define ICSSG_TS_PUSH_SLICE1 41 +struct mgmt_cmd { + u8 param; + u8 seqnum; + u8 type; + u8 header; + u32 cmd_args[3]; +}; + +struct mgmt_cmd_rsp { + u32 reserved; + u8 status; + u8 seqnum; + u8 type; + u8 header; + u32 cmd_args[3]; +}; + /* FDB FID_C2 flag definitions */ /* Indicates host port membership.*/ #define ICSSG_FDB_ENTRY_P0_MEMBERSHIP BIT(0) diff --git a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c index a27ec1dcc8d5..b715af21d23a 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c +++ b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c @@ -45,7 +45,7 @@ static int emac_set_link_ksettings(struct net_device *ndev, return phy_ethtool_set_link_ksettings(ndev, ecmd); } -static int emac_get_eee(struct net_device *ndev, struct ethtool_eee *edata) +static int emac_get_eee(struct net_device *ndev, struct ethtool_keee *edata) { if (!ndev->phydev) return -EOPNOTSUPP; @@ -53,7 +53,7 @@ static int emac_get_eee(struct net_device *ndev, struct ethtool_eee *edata) return phy_ethtool_get_eee(ndev->phydev, edata); } -static int emac_set_eee(struct net_device *ndev, struct ethtool_eee *edata) +static int emac_set_eee(struct net_device *ndev, struct ethtool_keee *edata) { if (!ndev->phydev) return -EOPNOTSUPP; @@ -68,9 +68,13 @@ static int emac_nway_reset(struct net_device *ndev) static int emac_get_sset_count(struct net_device *ndev, int stringset) { + struct prueth_emac *emac = netdev_priv(ndev); switch (stringset) { case ETH_SS_STATS: - return ICSSG_NUM_ETHTOOL_STATS; + if (emac->prueth->pa_stats) + return ICSSG_NUM_ETHTOOL_STATS; + else + return ICSSG_NUM_ETHTOOL_STATS - ICSSG_NUM_PA_STATS; default: return -EOPNOTSUPP; } @@ -78,18 +82,18 @@ static int emac_get_sset_count(struct net_device *ndev, int stringset) static void emac_get_strings(struct net_device *ndev, u32 stringset, u8 *data) { + struct prueth_emac *emac = netdev_priv(ndev); u8 *p = data; int i; switch (stringset) { case ETH_SS_STATS: - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) { - if (!icssg_all_stats[i].standard_stats) { - memcpy(p, icssg_all_stats[i].name, - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } - } + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) + if (!icssg_all_miig_stats[i].standard_stats) + ethtool_puts(&p, icssg_all_miig_stats[i].name); + if (emac->prueth->pa_stats) + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) + ethtool_puts(&p, icssg_all_pa_stats[i].name); break; default: break; @@ -104,13 +108,17 @@ static void emac_get_ethtool_stats(struct net_device *ndev, emac_update_hardware_stats(emac); - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) - if (!icssg_all_stats[i].standard_stats) + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) + if (!icssg_all_miig_stats[i].standard_stats) *(data++) = emac->stats[i]; + + if (emac->prueth->pa_stats) + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) + *(data++) = emac->pa_stats[i]; } static int emac_get_ts_info(struct net_device *ndev, - struct ethtool_ts_info *info) + struct kernel_ethtool_ts_info *info) { struct prueth_emac *emac = netdev_priv(ndev); @@ -118,8 +126,6 @@ static int emac_get_ts_info(struct net_device *ndev, SOF_TIMESTAMPING_TX_HARDWARE | SOF_TIMESTAMPING_TX_SOFTWARE | SOF_TIMESTAMPING_RX_HARDWARE | - SOF_TIMESTAMPING_RX_SOFTWARE | - SOF_TIMESTAMPING_SOFTWARE | SOF_TIMESTAMPING_RAW_HARDWARE; info->phc_index = icss_iep_get_ptp_clock_idx(emac->iep); @@ -142,6 +148,9 @@ static int emac_set_channels(struct net_device *ndev, emac->tx_ch_num = ch->tx_count; + if (emac->is_sr1) + emac->tx_ch_num++; + return 0; } @@ -152,8 +161,17 @@ static void emac_get_channels(struct net_device *ndev, ch->max_rx = 1; ch->max_tx = PRUETH_MAX_TX_QUEUES; + + /* Disable multiple TX channels due to timeouts + * when using more than one queue */ + if (emac->is_sr1) + ch->max_tx = 1; + ch->rx_count = 1; ch->tx_count = emac->tx_ch_num; + + if (emac->is_sr1) + ch->tx_count--; } static const struct ethtool_rmon_hist_range emac_rmon_ranges[] = { @@ -189,6 +207,93 @@ static void emac_get_rmon_stats(struct net_device *ndev, rmon_stats->hist_tx[4] = emac_get_stat_by_name(emac, "tx_bucket5_frames"); } +static int emac_get_coalesce(struct net_device *ndev, + struct ethtool_coalesce *coal, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth_tx_chn *tx_chn; + + tx_chn = &emac->tx_chns[0]; + + coal->rx_coalesce_usecs = emac->rx_pace_timeout_ns / 1000; + coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout_ns / 1000; + + return 0; +} + +static int emac_get_per_queue_coalesce(struct net_device *ndev, u32 queue, + struct ethtool_coalesce *coal) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth_tx_chn *tx_chn; + + if (queue >= PRUETH_MAX_TX_QUEUES) + return -EINVAL; + + tx_chn = &emac->tx_chns[queue]; + + coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout_ns / 1000; + + return 0; +} + +static int emac_set_coalesce(struct net_device *ndev, + struct ethtool_coalesce *coal, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + struct prueth_tx_chn *tx_chn; + + tx_chn = &emac->tx_chns[0]; + + if (coal->rx_coalesce_usecs && + coal->rx_coalesce_usecs < ICSSG_MIN_COALESCE_USECS) { + dev_info(prueth->dev, "defaulting to min value of %dus for rx-usecs\n", + ICSSG_MIN_COALESCE_USECS); + coal->rx_coalesce_usecs = ICSSG_MIN_COALESCE_USECS; + } + + if (coal->tx_coalesce_usecs && + coal->tx_coalesce_usecs < ICSSG_MIN_COALESCE_USECS) { + dev_info(prueth->dev, "defaulting to min value of %dus for tx-usecs\n", + ICSSG_MIN_COALESCE_USECS); + coal->tx_coalesce_usecs = ICSSG_MIN_COALESCE_USECS; + } + + emac->rx_pace_timeout_ns = coal->rx_coalesce_usecs * 1000; + tx_chn->tx_pace_timeout_ns = coal->tx_coalesce_usecs * 1000; + + return 0; +} + +static int emac_set_per_queue_coalesce(struct net_device *ndev, u32 queue, + struct ethtool_coalesce *coal) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + struct prueth_tx_chn *tx_chn; + + if (queue >= PRUETH_MAX_TX_QUEUES) + return -EINVAL; + + tx_chn = &emac->tx_chns[queue]; + + if (coal->tx_coalesce_usecs && + coal->tx_coalesce_usecs < ICSSG_MIN_COALESCE_USECS) { + dev_info(prueth->dev, "defaulting to min value of %dus for tx-usecs for tx-%u\n", + ICSSG_MIN_COALESCE_USECS, queue); + coal->tx_coalesce_usecs = ICSSG_MIN_COALESCE_USECS; + } + + tx_chn->tx_pace_timeout_ns = coal->tx_coalesce_usecs * 1000; + + return 0; +} + const struct ethtool_ops icssg_ethtool_ops = { .get_drvinfo = emac_get_drvinfo, .get_msglevel = emac_get_msglevel, @@ -197,6 +302,12 @@ const struct ethtool_ops icssg_ethtool_ops = { .get_ethtool_stats = emac_get_ethtool_stats, .get_strings = emac_get_strings, .get_ts_info = emac_get_ts_info, + .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS | + ETHTOOL_COALESCE_TX_USECS, + .get_coalesce = emac_get_coalesce, + .set_coalesce = emac_set_coalesce, + .get_per_queue_coalesce = emac_get_per_queue_coalesce, + .set_per_queue_coalesce = emac_set_per_queue_coalesce, .get_channels = emac_get_channels, .set_channels = emac_set_channels, .get_link_ksettings = emac_get_link_ksettings, @@ -207,3 +318,4 @@ const struct ethtool_ops icssg_ethtool_ops = { .nway_reset = emac_nway_reset, .get_rmon_stats = emac_get_rmon_stats, }; +EXPORT_SYMBOL_GPL(icssg_ethtool_ops); diff --git a/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c b/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c index 92718ae40d7e..b64955438bb2 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c +++ b/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c @@ -40,6 +40,7 @@ void icssg_mii_update_mtu(struct regmap *mii_rt, int mii, int mtu) (mtu - 1) << PRUSS_MII_RT_RX_FRMS_MAX_FRM_SHIFT); } } +EXPORT_SYMBOL_GPL(icssg_mii_update_mtu); void icssg_update_rgmii_cfg(struct regmap *miig_rt, struct prueth_emac *emac) { @@ -66,6 +67,7 @@ void icssg_update_rgmii_cfg(struct regmap *miig_rt, struct prueth_emac *emac) regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, full_duplex_mask, full_duplex_val); } +EXPORT_SYMBOL_GPL(icssg_update_rgmii_cfg); void icssg_miig_set_interface_mode(struct regmap *miig_rt, int mii, phy_interface_t phy_if) { @@ -105,6 +107,7 @@ u32 icssg_rgmii_get_speed(struct regmap *miig_rt, int mii) return icssg_rgmii_cfg_get_bitfield(miig_rt, mask, shift); } +EXPORT_SYMBOL_GPL(icssg_rgmii_get_speed); u32 icssg_rgmii_get_fullduplex(struct regmap *miig_rt, int mii) { @@ -118,3 +121,4 @@ u32 icssg_rgmii_get_fullduplex(struct regmap *miig_rt, int mii) return icssg_rgmii_cfg_get_bitfield(miig_rt, mask, shift); } +EXPORT_SYMBOL_GPL(icssg_rgmii_get_fullduplex); diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 411898a4f38c..9a75733e3f8f 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -13,8 +13,10 @@ #include <linux/dma/ti-cppi5.h> #include <linux/etherdevice.h> #include <linux/genalloc.h> +#include <linux/if_hsr.h> #include <linux/if_vlan.h> #include <linux/interrupt.h> +#include <linux/io-64-nonatomic-hi-lo.h> #include <linux/kernel.h> #include <linux/mfd/syscon.h> #include <linux/module.h> @@ -27,575 +29,27 @@ #include <linux/remoteproc/pruss.h> #include <linux/regmap.h> #include <linux/remoteproc.h> +#include <net/switchdev.h> #include "icssg_prueth.h" #include "icssg_mii_rt.h" +#include "icssg_switchdev.h" #include "../k3-cppi-desc-pool.h" #define PRUETH_MODULE_DESCRIPTION "PRUSS ICSSG Ethernet driver" -/* Netif debug messages possible */ -#define PRUETH_EMAC_DEBUG (NETIF_MSG_DRV | \ - NETIF_MSG_PROBE | \ - NETIF_MSG_LINK | \ - NETIF_MSG_TIMER | \ - NETIF_MSG_IFDOWN | \ - NETIF_MSG_IFUP | \ - NETIF_MSG_RX_ERR | \ - NETIF_MSG_TX_ERR | \ - NETIF_MSG_TX_QUEUED | \ - NETIF_MSG_INTR | \ - NETIF_MSG_TX_DONE | \ - NETIF_MSG_RX_STATUS | \ - NETIF_MSG_PKTDATA | \ - NETIF_MSG_HW | \ - NETIF_MSG_WOL) - -#define prueth_napi_to_emac(napi) container_of(napi, struct prueth_emac, napi_rx) +#define DEFAULT_VID 1 +#define DEFAULT_PORT_MASK 1 +#define DEFAULT_UNTAG_MASK 1 + +#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES (NETIF_F_HW_HSR_FWD | \ + NETIF_F_HW_HSR_DUP | \ + NETIF_F_HW_HSR_TAG_INS | \ + NETIF_F_HW_HSR_TAG_RM) /* CTRLMMR_ICSSG_RGMII_CTRL register bits */ #define ICSSG_CTRL_RGMII_ID_MODE BIT(24) -#define IEP_DEFAULT_CYCLE_TIME_NS 1000000 /* 1 ms */ - -static void prueth_cleanup_rx_chns(struct prueth_emac *emac, - struct prueth_rx_chn *rx_chn, - int max_rflows) -{ - if (rx_chn->desc_pool) - k3_cppi_desc_pool_destroy(rx_chn->desc_pool); - - if (rx_chn->rx_chn) - k3_udma_glue_release_rx_chn(rx_chn->rx_chn); -} - -static void prueth_cleanup_tx_chns(struct prueth_emac *emac) -{ - int i; - - for (i = 0; i < emac->tx_ch_num; i++) { - struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; - - if (tx_chn->desc_pool) - k3_cppi_desc_pool_destroy(tx_chn->desc_pool); - - if (tx_chn->tx_chn) - k3_udma_glue_release_tx_chn(tx_chn->tx_chn); - - /* Assume prueth_cleanup_tx_chns() is called at the - * end after all channel resources are freed - */ - memset(tx_chn, 0, sizeof(*tx_chn)); - } -} - -static void prueth_ndev_del_tx_napi(struct prueth_emac *emac, int num) -{ - int i; - - for (i = 0; i < num; i++) { - struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; - - if (tx_chn->irq) - free_irq(tx_chn->irq, tx_chn); - netif_napi_del(&tx_chn->napi_tx); - } -} - -static void prueth_xmit_free(struct prueth_tx_chn *tx_chn, - struct cppi5_host_desc_t *desc) -{ - struct cppi5_host_desc_t *first_desc, *next_desc; - dma_addr_t buf_dma, next_desc_dma; - u32 buf_dma_len; - - first_desc = desc; - next_desc = first_desc; - - cppi5_hdesc_get_obuf(first_desc, &buf_dma, &buf_dma_len); - k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &buf_dma); - - dma_unmap_single(tx_chn->dma_dev, buf_dma, buf_dma_len, - DMA_TO_DEVICE); - - next_desc_dma = cppi5_hdesc_get_next_hbdesc(first_desc); - k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &next_desc_dma); - while (next_desc_dma) { - next_desc = k3_cppi_desc_pool_dma2virt(tx_chn->desc_pool, - next_desc_dma); - cppi5_hdesc_get_obuf(next_desc, &buf_dma, &buf_dma_len); - k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &buf_dma); - - dma_unmap_page(tx_chn->dma_dev, buf_dma, buf_dma_len, - DMA_TO_DEVICE); - - next_desc_dma = cppi5_hdesc_get_next_hbdesc(next_desc); - k3_udma_glue_tx_cppi5_to_dma_addr(tx_chn->tx_chn, &next_desc_dma); - - k3_cppi_desc_pool_free(tx_chn->desc_pool, next_desc); - } - - k3_cppi_desc_pool_free(tx_chn->desc_pool, first_desc); -} - -static int emac_tx_complete_packets(struct prueth_emac *emac, int chn, - int budget) -{ - struct net_device *ndev = emac->ndev; - struct cppi5_host_desc_t *desc_tx; - struct netdev_queue *netif_txq; - struct prueth_tx_chn *tx_chn; - unsigned int total_bytes = 0; - struct sk_buff *skb; - dma_addr_t desc_dma; - int res, num_tx = 0; - void **swdata; - - tx_chn = &emac->tx_chns[chn]; - - while (true) { - res = k3_udma_glue_pop_tx_chn(tx_chn->tx_chn, &desc_dma); - if (res == -ENODATA) - break; - - /* teardown completion */ - if (cppi5_desc_is_tdcm(desc_dma)) { - if (atomic_dec_and_test(&emac->tdown_cnt)) - complete(&emac->tdown_complete); - break; - } - - desc_tx = k3_cppi_desc_pool_dma2virt(tx_chn->desc_pool, - desc_dma); - swdata = cppi5_hdesc_get_swdata(desc_tx); - - skb = *(swdata); - prueth_xmit_free(tx_chn, desc_tx); - - ndev = skb->dev; - ndev->stats.tx_packets++; - ndev->stats.tx_bytes += skb->len; - total_bytes += skb->len; - napi_consume_skb(skb, budget); - num_tx++; - } - - if (!num_tx) - return 0; - - netif_txq = netdev_get_tx_queue(ndev, chn); - netdev_tx_completed_queue(netif_txq, num_tx, total_bytes); - - if (netif_tx_queue_stopped(netif_txq)) { - /* If the TX queue was stopped, wake it now - * if we have enough room. - */ - __netif_tx_lock(netif_txq, smp_processor_id()); - if (netif_running(ndev) && - (k3_cppi_desc_pool_avail(tx_chn->desc_pool) >= - MAX_SKB_FRAGS)) - netif_tx_wake_queue(netif_txq); - __netif_tx_unlock(netif_txq); - } - - return num_tx; -} - -static int emac_napi_tx_poll(struct napi_struct *napi_tx, int budget) -{ - struct prueth_tx_chn *tx_chn = prueth_napi_to_tx_chn(napi_tx); - struct prueth_emac *emac = tx_chn->emac; - int num_tx_packets; - - num_tx_packets = emac_tx_complete_packets(emac, tx_chn->id, budget); - - if (num_tx_packets >= budget) - return budget; - - if (napi_complete_done(napi_tx, num_tx_packets)) - enable_irq(tx_chn->irq); - - return num_tx_packets; -} - -static irqreturn_t prueth_tx_irq(int irq, void *dev_id) -{ - struct prueth_tx_chn *tx_chn = dev_id; - - disable_irq_nosync(irq); - napi_schedule(&tx_chn->napi_tx); - - return IRQ_HANDLED; -} - -static int prueth_ndev_add_tx_napi(struct prueth_emac *emac) -{ - struct prueth *prueth = emac->prueth; - int i, ret; - - for (i = 0; i < emac->tx_ch_num; i++) { - struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; - - netif_napi_add_tx(emac->ndev, &tx_chn->napi_tx, emac_napi_tx_poll); - ret = request_irq(tx_chn->irq, prueth_tx_irq, - IRQF_TRIGGER_HIGH, tx_chn->name, - tx_chn); - if (ret) { - netif_napi_del(&tx_chn->napi_tx); - dev_err(prueth->dev, "unable to request TX IRQ %d\n", - tx_chn->irq); - goto fail; - } - } - - return 0; -fail: - prueth_ndev_del_tx_napi(emac, i); - return ret; -} - -static int prueth_init_tx_chns(struct prueth_emac *emac) -{ - static const struct k3_ring_cfg ring_cfg = { - .elm_size = K3_RINGACC_RING_ELSIZE_8, - .mode = K3_RINGACC_RING_MODE_RING, - .flags = 0, - .size = PRUETH_MAX_TX_DESC, - }; - struct k3_udma_glue_tx_channel_cfg tx_cfg; - struct device *dev = emac->prueth->dev; - struct net_device *ndev = emac->ndev; - int ret, slice, i; - u32 hdesc_size; - - slice = prueth_emac_slice(emac); - if (slice < 0) - return slice; - - init_completion(&emac->tdown_complete); - - hdesc_size = cppi5_hdesc_calc_size(true, PRUETH_NAV_PS_DATA_SIZE, - PRUETH_NAV_SW_DATA_SIZE); - memset(&tx_cfg, 0, sizeof(tx_cfg)); - tx_cfg.swdata_size = PRUETH_NAV_SW_DATA_SIZE; - tx_cfg.tx_cfg = ring_cfg; - tx_cfg.txcq_cfg = ring_cfg; - - for (i = 0; i < emac->tx_ch_num; i++) { - struct prueth_tx_chn *tx_chn = &emac->tx_chns[i]; - - /* To differentiate channels for SLICE0 vs SLICE1 */ - snprintf(tx_chn->name, sizeof(tx_chn->name), - "tx%d-%d", slice, i); - - tx_chn->emac = emac; - tx_chn->id = i; - tx_chn->descs_num = PRUETH_MAX_TX_DESC; - - tx_chn->tx_chn = - k3_udma_glue_request_tx_chn(dev, tx_chn->name, - &tx_cfg); - if (IS_ERR(tx_chn->tx_chn)) { - ret = PTR_ERR(tx_chn->tx_chn); - tx_chn->tx_chn = NULL; - netdev_err(ndev, - "Failed to request tx dma ch: %d\n", ret); - goto fail; - } - - tx_chn->dma_dev = k3_udma_glue_tx_get_dma_device(tx_chn->tx_chn); - tx_chn->desc_pool = - k3_cppi_desc_pool_create_name(tx_chn->dma_dev, - tx_chn->descs_num, - hdesc_size, - tx_chn->name); - if (IS_ERR(tx_chn->desc_pool)) { - ret = PTR_ERR(tx_chn->desc_pool); - tx_chn->desc_pool = NULL; - netdev_err(ndev, "Failed to create tx pool: %d\n", ret); - goto fail; - } - - ret = k3_udma_glue_tx_get_irq(tx_chn->tx_chn); - if (ret < 0) { - netdev_err(ndev, "failed to get tx irq\n"); - goto fail; - } - tx_chn->irq = ret; - - snprintf(tx_chn->name, sizeof(tx_chn->name), "%s-tx%d", - dev_name(dev), tx_chn->id); - } - - return 0; - -fail: - prueth_cleanup_tx_chns(emac); - return ret; -} - -static int prueth_init_rx_chns(struct prueth_emac *emac, - struct prueth_rx_chn *rx_chn, - char *name, u32 max_rflows, - u32 max_desc_num) -{ - struct k3_udma_glue_rx_channel_cfg rx_cfg; - struct device *dev = emac->prueth->dev; - struct net_device *ndev = emac->ndev; - u32 fdqring_id, hdesc_size; - int i, ret = 0, slice; - - slice = prueth_emac_slice(emac); - if (slice < 0) - return slice; - - /* To differentiate channels for SLICE0 vs SLICE1 */ - snprintf(rx_chn->name, sizeof(rx_chn->name), "%s%d", name, slice); - - hdesc_size = cppi5_hdesc_calc_size(true, PRUETH_NAV_PS_DATA_SIZE, - PRUETH_NAV_SW_DATA_SIZE); - memset(&rx_cfg, 0, sizeof(rx_cfg)); - rx_cfg.swdata_size = PRUETH_NAV_SW_DATA_SIZE; - rx_cfg.flow_id_num = max_rflows; - rx_cfg.flow_id_base = -1; /* udmax will auto select flow id base */ - - /* init all flows */ - rx_chn->dev = dev; - rx_chn->descs_num = max_desc_num; - - rx_chn->rx_chn = k3_udma_glue_request_rx_chn(dev, rx_chn->name, - &rx_cfg); - if (IS_ERR(rx_chn->rx_chn)) { - ret = PTR_ERR(rx_chn->rx_chn); - rx_chn->rx_chn = NULL; - netdev_err(ndev, "Failed to request rx dma ch: %d\n", ret); - goto fail; - } - - rx_chn->dma_dev = k3_udma_glue_rx_get_dma_device(rx_chn->rx_chn); - rx_chn->desc_pool = k3_cppi_desc_pool_create_name(rx_chn->dma_dev, - rx_chn->descs_num, - hdesc_size, - rx_chn->name); - if (IS_ERR(rx_chn->desc_pool)) { - ret = PTR_ERR(rx_chn->desc_pool); - rx_chn->desc_pool = NULL; - netdev_err(ndev, "Failed to create rx pool: %d\n", ret); - goto fail; - } - - emac->rx_flow_id_base = k3_udma_glue_rx_get_flow_id_base(rx_chn->rx_chn); - netdev_dbg(ndev, "flow id base = %d\n", emac->rx_flow_id_base); - - fdqring_id = K3_RINGACC_RING_ID_ANY; - for (i = 0; i < rx_cfg.flow_id_num; i++) { - struct k3_ring_cfg rxring_cfg = { - .elm_size = K3_RINGACC_RING_ELSIZE_8, - .mode = K3_RINGACC_RING_MODE_RING, - .flags = 0, - }; - struct k3_ring_cfg fdqring_cfg = { - .elm_size = K3_RINGACC_RING_ELSIZE_8, - .flags = K3_RINGACC_RING_SHARED, - }; - struct k3_udma_glue_rx_flow_cfg rx_flow_cfg = { - .rx_cfg = rxring_cfg, - .rxfdq_cfg = fdqring_cfg, - .ring_rxq_id = K3_RINGACC_RING_ID_ANY, - .src_tag_lo_sel = - K3_UDMA_GLUE_SRC_TAG_LO_USE_REMOTE_SRC_TAG, - }; - - rx_flow_cfg.ring_rxfdq0_id = fdqring_id; - rx_flow_cfg.rx_cfg.size = max_desc_num; - rx_flow_cfg.rxfdq_cfg.size = max_desc_num; - rx_flow_cfg.rxfdq_cfg.mode = emac->prueth->pdata.fdqring_mode; - - ret = k3_udma_glue_rx_flow_init(rx_chn->rx_chn, - i, &rx_flow_cfg); - if (ret) { - netdev_err(ndev, "Failed to init rx flow%d %d\n", - i, ret); - goto fail; - } - if (!i) - fdqring_id = k3_udma_glue_rx_flow_get_fdq_id(rx_chn->rx_chn, - i); - rx_chn->irq[i] = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i); - if (rx_chn->irq[i] <= 0) { - ret = rx_chn->irq[i]; - netdev_err(ndev, "Failed to get rx dma irq"); - goto fail; - } - } - - return 0; - -fail: - prueth_cleanup_rx_chns(emac, rx_chn, max_rflows); - return ret; -} - -static int prueth_dma_rx_push(struct prueth_emac *emac, - struct sk_buff *skb, - struct prueth_rx_chn *rx_chn) -{ - struct net_device *ndev = emac->ndev; - struct cppi5_host_desc_t *desc_rx; - u32 pkt_len = skb_tailroom(skb); - dma_addr_t desc_dma; - dma_addr_t buf_dma; - void **swdata; - - desc_rx = k3_cppi_desc_pool_alloc(rx_chn->desc_pool); - if (!desc_rx) { - netdev_err(ndev, "rx push: failed to allocate descriptor\n"); - return -ENOMEM; - } - desc_dma = k3_cppi_desc_pool_virt2dma(rx_chn->desc_pool, desc_rx); - - buf_dma = dma_map_single(rx_chn->dma_dev, skb->data, pkt_len, DMA_FROM_DEVICE); - if (unlikely(dma_mapping_error(rx_chn->dma_dev, buf_dma))) { - k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); - netdev_err(ndev, "rx push: failed to map rx pkt buffer\n"); - return -EINVAL; - } - - cppi5_hdesc_init(desc_rx, CPPI5_INFO0_HDESC_EPIB_PRESENT, - PRUETH_NAV_PS_DATA_SIZE); - k3_udma_glue_rx_dma_to_cppi5_addr(rx_chn->rx_chn, &buf_dma); - cppi5_hdesc_attach_buf(desc_rx, buf_dma, skb_tailroom(skb), buf_dma, skb_tailroom(skb)); - - swdata = cppi5_hdesc_get_swdata(desc_rx); - *swdata = skb; - - return k3_udma_glue_push_rx_chn(rx_chn->rx_chn, 0, - desc_rx, desc_dma); -} - -static u64 icssg_ts_to_ns(u32 hi_sw, u32 hi, u32 lo, u32 cycle_time_ns) -{ - u32 iepcount_lo, iepcount_hi, hi_rollover_count; - u64 ns; - - iepcount_lo = lo & GENMASK(19, 0); - iepcount_hi = (hi & GENMASK(11, 0)) << 12 | lo >> 20; - hi_rollover_count = hi >> 11; - - ns = ((u64)hi_rollover_count) << 23 | (iepcount_hi + hi_sw); - ns = ns * cycle_time_ns + iepcount_lo; - - return ns; -} - -static void emac_rx_timestamp(struct prueth_emac *emac, - struct sk_buff *skb, u32 *psdata) -{ - struct skb_shared_hwtstamps *ssh; - u64 ns; - - u32 hi_sw = readl(emac->prueth->shram.va + - TIMESYNC_FW_WC_COUNT_HI_SW_OFFSET_OFFSET); - ns = icssg_ts_to_ns(hi_sw, psdata[1], psdata[0], - IEP_DEFAULT_CYCLE_TIME_NS); - - ssh = skb_hwtstamps(skb); - memset(ssh, 0, sizeof(*ssh)); - ssh->hwtstamp = ns_to_ktime(ns); -} - -static int emac_rx_packet(struct prueth_emac *emac, u32 flow_id) -{ - struct prueth_rx_chn *rx_chn = &emac->rx_chns; - u32 buf_dma_len, pkt_len, port_id = 0; - struct net_device *ndev = emac->ndev; - struct cppi5_host_desc_t *desc_rx; - struct sk_buff *skb, *new_skb; - dma_addr_t desc_dma, buf_dma; - void **swdata; - u32 *psdata; - int ret; - - ret = k3_udma_glue_pop_rx_chn(rx_chn->rx_chn, flow_id, &desc_dma); - if (ret) { - if (ret != -ENODATA) - netdev_err(ndev, "rx pop: failed: %d\n", ret); - return ret; - } - - if (cppi5_desc_is_tdcm(desc_dma)) /* Teardown ? */ - return 0; - - desc_rx = k3_cppi_desc_pool_dma2virt(rx_chn->desc_pool, desc_dma); - - swdata = cppi5_hdesc_get_swdata(desc_rx); - skb = *swdata; - - psdata = cppi5_hdesc_get_psdata(desc_rx); - /* RX HW timestamp */ - if (emac->rx_ts_enabled) - emac_rx_timestamp(emac, skb, psdata); - - cppi5_hdesc_get_obuf(desc_rx, &buf_dma, &buf_dma_len); - k3_udma_glue_rx_cppi5_to_dma_addr(rx_chn->rx_chn, &buf_dma); - pkt_len = cppi5_hdesc_get_pktlen(desc_rx); - /* firmware adds 4 CRC bytes, strip them */ - pkt_len -= 4; - cppi5_desc_get_tags_ids(&desc_rx->hdr, &port_id, NULL); - - dma_unmap_single(rx_chn->dma_dev, buf_dma, buf_dma_len, DMA_FROM_DEVICE); - k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); - - skb->dev = ndev; - new_skb = netdev_alloc_skb_ip_align(ndev, PRUETH_MAX_PKT_SIZE); - /* if allocation fails we drop the packet but push the - * descriptor back to the ring with old skb to prevent a stall - */ - if (!new_skb) { - ndev->stats.rx_dropped++; - new_skb = skb; - } else { - /* send the filled skb up the n/w stack */ - skb_put(skb, pkt_len); - skb->protocol = eth_type_trans(skb, ndev); - napi_gro_receive(&emac->napi_rx, skb); - ndev->stats.rx_bytes += pkt_len; - ndev->stats.rx_packets++; - } - - /* queue another RX DMA */ - ret = prueth_dma_rx_push(emac, new_skb, &emac->rx_chns); - if (WARN_ON(ret < 0)) { - dev_kfree_skb_any(new_skb); - ndev->stats.rx_errors++; - ndev->stats.rx_dropped++; - } - - return ret; -} - -static void prueth_rx_cleanup(void *data, dma_addr_t desc_dma) -{ - struct prueth_rx_chn *rx_chn = data; - struct cppi5_host_desc_t *desc_rx; - struct sk_buff *skb; - dma_addr_t buf_dma; - u32 buf_dma_len; - void **swdata; - - desc_rx = k3_cppi_desc_pool_dma2virt(rx_chn->desc_pool, desc_dma); - swdata = cppi5_hdesc_get_swdata(desc_rx); - skb = *swdata; - cppi5_hdesc_get_obuf(desc_rx, &buf_dma, &buf_dma_len); - k3_udma_glue_rx_cppi5_to_dma_addr(rx_chn->rx_chn, &buf_dma); - - dma_unmap_single(rx_chn->dma_dev, buf_dma, buf_dma_len, - DMA_FROM_DEVICE); - k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); - - dev_kfree_skb_any(skb); -} - static int emac_get_tx_ts(struct prueth_emac *emac, struct emac_tx_ts_response *rsp) { @@ -661,208 +115,6 @@ static void tx_ts_work(struct prueth_emac *emac) } } -static int prueth_tx_ts_cookie_get(struct prueth_emac *emac) -{ - int i; - - /* search and get the next free slot */ - for (i = 0; i < PRUETH_MAX_TX_TS_REQUESTS; i++) { - if (!emac->tx_ts_skb[i]) { - emac->tx_ts_skb[i] = ERR_PTR(-EBUSY); /* reserve slot */ - return i; - } - } - - return -EBUSY; -} - -/** - * emac_ndo_start_xmit - EMAC Transmit function - * @skb: SKB pointer - * @ndev: EMAC network adapter - * - * Called by the system to transmit a packet - we queue the packet in - * EMAC hardware transmit queue - * Doesn't wait for completion we'll check for TX completion in - * emac_tx_complete_packets(). - * - * Return: enum netdev_tx - */ -static enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev) -{ - struct cppi5_host_desc_t *first_desc, *next_desc, *cur_desc; - struct prueth_emac *emac = netdev_priv(ndev); - struct netdev_queue *netif_txq; - struct prueth_tx_chn *tx_chn; - dma_addr_t desc_dma, buf_dma; - int i, ret = 0, q_idx; - bool in_tx_ts = 0; - int tx_ts_cookie; - void **swdata; - u32 pkt_len; - u32 *epib; - - pkt_len = skb_headlen(skb); - q_idx = skb_get_queue_mapping(skb); - - tx_chn = &emac->tx_chns[q_idx]; - netif_txq = netdev_get_tx_queue(ndev, q_idx); - - /* Map the linear buffer */ - buf_dma = dma_map_single(tx_chn->dma_dev, skb->data, pkt_len, DMA_TO_DEVICE); - if (dma_mapping_error(tx_chn->dma_dev, buf_dma)) { - netdev_err(ndev, "tx: failed to map skb buffer\n"); - ret = NETDEV_TX_OK; - goto drop_free_skb; - } - - first_desc = k3_cppi_desc_pool_alloc(tx_chn->desc_pool); - if (!first_desc) { - netdev_dbg(ndev, "tx: failed to allocate descriptor\n"); - dma_unmap_single(tx_chn->dma_dev, buf_dma, pkt_len, DMA_TO_DEVICE); - goto drop_stop_q_busy; - } - - cppi5_hdesc_init(first_desc, CPPI5_INFO0_HDESC_EPIB_PRESENT, - PRUETH_NAV_PS_DATA_SIZE); - cppi5_hdesc_set_pkttype(first_desc, 0); - epib = first_desc->epib; - epib[0] = 0; - epib[1] = 0; - if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && - emac->tx_ts_enabled) { - tx_ts_cookie = prueth_tx_ts_cookie_get(emac); - if (tx_ts_cookie >= 0) { - skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; - /* Request TX timestamp */ - epib[0] = (u32)tx_ts_cookie; - epib[1] = 0x80000000; /* TX TS request */ - emac->tx_ts_skb[tx_ts_cookie] = skb_get(skb); - in_tx_ts = 1; - } - } - - /* set dst tag to indicate internal qid at the firmware which is at - * bit8..bit15. bit0..bit7 indicates port num for directed - * packets in case of switch mode operation - */ - cppi5_desc_set_tags_ids(&first_desc->hdr, 0, (emac->port_id | (q_idx << 8))); - k3_udma_glue_tx_dma_to_cppi5_addr(tx_chn->tx_chn, &buf_dma); - cppi5_hdesc_attach_buf(first_desc, buf_dma, pkt_len, buf_dma, pkt_len); - swdata = cppi5_hdesc_get_swdata(first_desc); - *swdata = skb; - - /* Handle the case where skb is fragmented in pages */ - cur_desc = first_desc; - for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - u32 frag_size = skb_frag_size(frag); - - next_desc = k3_cppi_desc_pool_alloc(tx_chn->desc_pool); - if (!next_desc) { - netdev_err(ndev, - "tx: failed to allocate frag. descriptor\n"); - goto free_desc_stop_q_busy_cleanup_tx_ts; - } - - buf_dma = skb_frag_dma_map(tx_chn->dma_dev, frag, 0, frag_size, - DMA_TO_DEVICE); - if (dma_mapping_error(tx_chn->dma_dev, buf_dma)) { - netdev_err(ndev, "tx: Failed to map skb page\n"); - k3_cppi_desc_pool_free(tx_chn->desc_pool, next_desc); - ret = NETDEV_TX_OK; - goto cleanup_tx_ts; - } - - cppi5_hdesc_reset_hbdesc(next_desc); - k3_udma_glue_tx_dma_to_cppi5_addr(tx_chn->tx_chn, &buf_dma); - cppi5_hdesc_attach_buf(next_desc, - buf_dma, frag_size, buf_dma, frag_size); - - desc_dma = k3_cppi_desc_pool_virt2dma(tx_chn->desc_pool, - next_desc); - k3_udma_glue_tx_dma_to_cppi5_addr(tx_chn->tx_chn, &desc_dma); - cppi5_hdesc_link_hbdesc(cur_desc, desc_dma); - - pkt_len += frag_size; - cur_desc = next_desc; - } - WARN_ON_ONCE(pkt_len != skb->len); - - /* report bql before sending packet */ - netdev_tx_sent_queue(netif_txq, pkt_len); - - cppi5_hdesc_set_pktlen(first_desc, pkt_len); - desc_dma = k3_cppi_desc_pool_virt2dma(tx_chn->desc_pool, first_desc); - /* cppi5_desc_dump(first_desc, 64); */ - - skb_tx_timestamp(skb); /* SW timestamp if SKBTX_IN_PROGRESS not set */ - ret = k3_udma_glue_push_tx_chn(tx_chn->tx_chn, first_desc, desc_dma); - if (ret) { - netdev_err(ndev, "tx: push failed: %d\n", ret); - goto drop_free_descs; - } - - if (in_tx_ts) - atomic_inc(&emac->tx_ts_pending); - - if (k3_cppi_desc_pool_avail(tx_chn->desc_pool) < MAX_SKB_FRAGS) { - netif_tx_stop_queue(netif_txq); - /* Barrier, so that stop_queue visible to other cpus */ - smp_mb__after_atomic(); - - if (k3_cppi_desc_pool_avail(tx_chn->desc_pool) >= - MAX_SKB_FRAGS) - netif_tx_wake_queue(netif_txq); - } - - return NETDEV_TX_OK; - -cleanup_tx_ts: - if (in_tx_ts) { - dev_kfree_skb_any(emac->tx_ts_skb[tx_ts_cookie]); - emac->tx_ts_skb[tx_ts_cookie] = NULL; - } - -drop_free_descs: - prueth_xmit_free(tx_chn, first_desc); - -drop_free_skb: - dev_kfree_skb_any(skb); - - /* error */ - ndev->stats.tx_dropped++; - netdev_err(ndev, "tx: error: %d\n", ret); - - return ret; - -free_desc_stop_q_busy_cleanup_tx_ts: - if (in_tx_ts) { - dev_kfree_skb_any(emac->tx_ts_skb[tx_ts_cookie]); - emac->tx_ts_skb[tx_ts_cookie] = NULL; - } - prueth_xmit_free(tx_chn, first_desc); - -drop_stop_q_busy: - netif_tx_stop_queue(netif_txq); - return NETDEV_TX_BUSY; -} - -static void prueth_tx_cleanup(void *data, dma_addr_t desc_dma) -{ - struct prueth_tx_chn *tx_chn = data; - struct cppi5_host_desc_t *desc_tx; - struct sk_buff *skb; - void **swdata; - - desc_tx = k3_cppi_desc_pool_dma2virt(tx_chn->desc_pool, desc_dma); - swdata = cppi5_hdesc_get_swdata(desc_tx); - skb = *(swdata); - prueth_xmit_free(tx_chn, desc_tx); - - dev_kfree_skb_any(skb); -} - static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id) { struct prueth_emac *emac = dev_id; @@ -873,20 +125,30 @@ static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id) return IRQ_HANDLED; } -static irqreturn_t prueth_rx_irq(int irq, void *dev_id) -{ - struct prueth_emac *emac = dev_id; - - disable_irq_nosync(irq); - napi_schedule(&emac->napi_rx); - - return IRQ_HANDLED; -} +static struct icssg_firmwares icssg_hsr_firmwares[] = { + { + .pru = "ti-pruss/am65x-sr2-pru0-pruhsr-fw.elf", + .rtu = "ti-pruss/am65x-sr2-rtu0-pruhsr-fw.elf", + .txpru = "ti-pruss/am65x-sr2-txpru0-pruhsr-fw.elf", + }, + { + .pru = "ti-pruss/am65x-sr2-pru1-pruhsr-fw.elf", + .rtu = "ti-pruss/am65x-sr2-rtu1-pruhsr-fw.elf", + .txpru = "ti-pruss/am65x-sr2-txpru1-pruhsr-fw.elf", + } +}; -struct icssg_firmwares { - char *pru; - char *rtu; - char *txpru; +static struct icssg_firmwares icssg_switch_firmwares[] = { + { + .pru = "ti-pruss/am65x-sr2-pru0-prusw-fw.elf", + .rtu = "ti-pruss/am65x-sr2-rtu0-prusw-fw.elf", + .txpru = "ti-pruss/am65x-sr2-txpru0-prusw-fw.elf", + }, + { + .pru = "ti-pruss/am65x-sr2-pru1-prusw-fw.elf", + .rtu = "ti-pruss/am65x-sr2-rtu1-prusw-fw.elf", + .txpru = "ti-pruss/am65x-sr2-txpru1-prusw-fw.elf", + } }; static struct icssg_firmwares icssg_emac_firmwares[] = { @@ -902,90 +164,152 @@ static struct icssg_firmwares icssg_emac_firmwares[] = { } }; -static int prueth_emac_start(struct prueth *prueth, struct prueth_emac *emac) +static int prueth_start(struct rproc *rproc, const char *fw_name) +{ + int ret; + + ret = rproc_set_firmware(rproc, fw_name); + if (ret) + return ret; + return rproc_boot(rproc); +} + +static void prueth_shutdown(struct rproc *rproc) +{ + rproc_shutdown(rproc); +} + +static int prueth_emac_start(struct prueth *prueth) { struct icssg_firmwares *firmwares; struct device *dev = prueth->dev; - int slice, ret; + int ret, slice; - firmwares = icssg_emac_firmwares; + if (prueth->is_switch_mode) + firmwares = icssg_switch_firmwares; + else if (prueth->is_hsr_offload_mode) + firmwares = icssg_hsr_firmwares; + else + firmwares = icssg_emac_firmwares; - slice = prueth_emac_slice(emac); - if (slice < 0) { - netdev_err(emac->ndev, "invalid port\n"); - return -EINVAL; + for (slice = 0; slice < PRUETH_NUM_MACS; slice++) { + ret = prueth_start(prueth->pru[slice], firmwares[slice].pru); + if (ret) { + dev_err(dev, "failed to boot PRU%d: %d\n", slice, ret); + goto unwind_slices; + } + + ret = prueth_start(prueth->rtu[slice], firmwares[slice].rtu); + if (ret) { + dev_err(dev, "failed to boot RTU%d: %d\n", slice, ret); + rproc_shutdown(prueth->pru[slice]); + goto unwind_slices; + } + + ret = prueth_start(prueth->txpru[slice], firmwares[slice].txpru); + if (ret) { + dev_err(dev, "failed to boot TX_PRU%d: %d\n", slice, ret); + rproc_shutdown(prueth->rtu[slice]); + rproc_shutdown(prueth->pru[slice]); + goto unwind_slices; + } } - ret = icssg_config(prueth, emac, slice); - if (ret) - return ret; + return 0; - ret = rproc_set_firmware(prueth->pru[slice], firmwares[slice].pru); - ret = rproc_boot(prueth->pru[slice]); - if (ret) { - dev_err(dev, "failed to boot PRU%d: %d\n", slice, ret); - return -EINVAL; +unwind_slices: + while (--slice >= 0) { + prueth_shutdown(prueth->txpru[slice]); + prueth_shutdown(prueth->rtu[slice]); + prueth_shutdown(prueth->pru[slice]); } - ret = rproc_set_firmware(prueth->rtu[slice], firmwares[slice].rtu); - ret = rproc_boot(prueth->rtu[slice]); - if (ret) { - dev_err(dev, "failed to boot RTU%d: %d\n", slice, ret); - goto halt_pru; + return ret; +} + +static void prueth_emac_stop(struct prueth *prueth) +{ + int slice; + + for (slice = 0; slice < PRUETH_NUM_MACS; slice++) { + prueth_shutdown(prueth->txpru[slice]); + prueth_shutdown(prueth->rtu[slice]); + prueth_shutdown(prueth->pru[slice]); + } +} + +static int prueth_emac_common_start(struct prueth *prueth) +{ + struct prueth_emac *emac; + int ret = 0; + int slice; + + if (!prueth->emac[ICSS_SLICE0] && !prueth->emac[ICSS_SLICE1]) + return -EINVAL; + + /* clear SMEM and MSMC settings for all slices */ + memset_io(prueth->msmcram.va, 0, prueth->msmcram.size); + memset_io(prueth->shram.va, 0, ICSSG_CONFIG_OFFSET_SLICE1 * PRUETH_NUM_MACS); + + icssg_class_default(prueth->miig_rt, ICSS_SLICE0, 0, false); + icssg_class_default(prueth->miig_rt, ICSS_SLICE1, 0, false); + + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) + icssg_init_fw_offload_mode(prueth); + else + icssg_init_emac_mode(prueth); + + for (slice = 0; slice < PRUETH_NUM_MACS; slice++) { + emac = prueth->emac[slice]; + if (!emac) + continue; + ret = icssg_config(prueth, emac, slice); + if (ret) + goto disable_class; } - ret = rproc_set_firmware(prueth->txpru[slice], firmwares[slice].txpru); - ret = rproc_boot(prueth->txpru[slice]); + ret = prueth_emac_start(prueth); + if (ret) + goto disable_class; + + emac = prueth->emac[ICSS_SLICE0] ? prueth->emac[ICSS_SLICE0] : + prueth->emac[ICSS_SLICE1]; + ret = icss_iep_init(emac->iep, &prueth_iep_clockops, + emac, IEP_DEFAULT_CYCLE_TIME_NS); if (ret) { - dev_err(dev, "failed to boot TX_PRU%d: %d\n", slice, ret); - goto halt_rtu; + dev_err(prueth->dev, "Failed to initialize IEP module\n"); + goto stop_pruss; } - emac->fw_running = 1; return 0; -halt_rtu: - rproc_shutdown(prueth->rtu[slice]); +stop_pruss: + prueth_emac_stop(prueth); -halt_pru: - rproc_shutdown(prueth->pru[slice]); +disable_class: + icssg_class_disable(prueth->miig_rt, ICSS_SLICE0); + icssg_class_disable(prueth->miig_rt, ICSS_SLICE1); return ret; } -static void prueth_emac_stop(struct prueth_emac *emac) +static int prueth_emac_common_stop(struct prueth *prueth) { - struct prueth *prueth = emac->prueth; - int slice; + struct prueth_emac *emac; - switch (emac->port_id) { - case PRUETH_PORT_MII0: - slice = ICSS_SLICE0; - break; - case PRUETH_PORT_MII1: - slice = ICSS_SLICE1; - break; - default: - netdev_err(emac->ndev, "invalid port\n"); - return; - } + if (!prueth->emac[ICSS_SLICE0] && !prueth->emac[ICSS_SLICE1]) + return -EINVAL; - emac->fw_running = 0; - rproc_shutdown(prueth->txpru[slice]); - rproc_shutdown(prueth->rtu[slice]); - rproc_shutdown(prueth->pru[slice]); -} + icssg_class_disable(prueth->miig_rt, ICSS_SLICE0); + icssg_class_disable(prueth->miig_rt, ICSS_SLICE1); -static void prueth_cleanup_tx_ts(struct prueth_emac *emac) -{ - int i; + prueth_emac_stop(prueth); - for (i = 0; i < PRUETH_MAX_TX_TS_REQUESTS; i++) { - if (emac->tx_ts_skb[i]) { - dev_kfree_skb_any(emac->tx_ts_skb[i]); - emac->tx_ts_skb[i] = NULL; - } - } + emac = prueth->emac[ICSS_SLICE0] ? prueth->emac[ICSS_SLICE0] : + prueth->emac[ICSS_SLICE1]; + icss_iep_exit(emac->iep); + + return 0; } /* called back by PHY layer if there is change in link state of hw port*/ @@ -1039,10 +363,10 @@ static void emac_adjust_link(struct net_device *ndev) icssg_config_ipg(emac); spin_unlock_irqrestore(&emac->lock, flags); icssg_config_set_speed(emac); - emac_set_port_state(emac, ICSSG_EMAC_PORT_FORWARD); + icssg_set_port_state(emac, ICSSG_EMAC_PORT_FORWARD); } else { - emac_set_port_state(emac, ICSSG_EMAC_PORT_DISABLE); + icssg_set_port_state(emac, ICSSG_EMAC_PORT_DISABLE); } } @@ -1055,84 +379,14 @@ static void emac_adjust_link(struct net_device *ndev) } } -static int emac_napi_rx_poll(struct napi_struct *napi_rx, int budget) +static enum hrtimer_restart emac_rx_timer_callback(struct hrtimer *timer) { - struct prueth_emac *emac = prueth_napi_to_emac(napi_rx); + struct prueth_emac *emac = + container_of(timer, struct prueth_emac, rx_hrtimer); int rx_flow = PRUETH_RX_FLOW_DATA; - int flow = PRUETH_MAX_RX_FLOWS; - int num_rx = 0; - int cur_budget; - int ret; - - while (flow--) { - cur_budget = budget - num_rx; - - while (cur_budget--) { - ret = emac_rx_packet(emac, flow); - if (ret) - break; - num_rx++; - } - - if (num_rx >= budget) - break; - } - - if (num_rx < budget && napi_complete_done(napi_rx, num_rx)) - enable_irq(emac->rx_chns.irq[rx_flow]); - - return num_rx; -} - -static int prueth_prepare_rx_chan(struct prueth_emac *emac, - struct prueth_rx_chn *chn, - int buf_size) -{ - struct sk_buff *skb; - int i, ret; - - for (i = 0; i < chn->descs_num; i++) { - skb = __netdev_alloc_skb_ip_align(NULL, buf_size, GFP_KERNEL); - if (!skb) - return -ENOMEM; - ret = prueth_dma_rx_push(emac, skb, chn); - if (ret < 0) { - netdev_err(emac->ndev, - "cannot submit skb for rx chan %s ret %d\n", - chn->name, ret); - kfree_skb(skb); - return ret; - } - } - - return 0; -} - -static void prueth_reset_tx_chan(struct prueth_emac *emac, int ch_num, - bool free_skb) -{ - int i; - - for (i = 0; i < ch_num; i++) { - if (free_skb) - k3_udma_glue_reset_tx_chn(emac->tx_chns[i].tx_chn, - &emac->tx_chns[i], - prueth_tx_cleanup); - k3_udma_glue_disable_tx_chn(emac->tx_chns[i].tx_chn); - } -} - -static void prueth_reset_rx_chan(struct prueth_rx_chn *chn, - int num_flows, bool disable) -{ - int i; - - for (i = 0; i < num_flows; i++) - k3_udma_glue_reset_rx_chn(chn->rx_chn, i, chn, - prueth_rx_cleanup, !!i); - if (disable) - k3_udma_glue_disable_rx_chn(chn->rx_chn); + enable_irq(emac->rx_chns.irq[rx_flow]); + return HRTIMER_NORESTART; } static int emac_phy_connect(struct prueth_emac *emac) @@ -1212,9 +466,6 @@ static void prueth_iep_settime(void *clockops_data, u64 ns) u32 cycletime; int timeout; - if (!emac->fw_running) - return; - sc_descp = emac->prueth->shram.va + TIMESYNC_FW_WC_SETCLOCK_DESC_OFFSET; cycletime = IEP_DEFAULT_CYCLE_TIME_NS; @@ -1225,7 +476,8 @@ static void prueth_iep_settime(void *clockops_data, u64 ns) sc_desc.cyclecounter0_set = cyclecount & GENMASK(31, 0); sc_desc.cyclecounter1_set = (cyclecount & GENMASK(63, 32)) >> 32; sc_desc.iepcount_set = ns % cycletime; - sc_desc.CMP0_current = cycletime - 4; //Count from 0 to (cycle time)-4 + /* Count from 0 to (cycle time) - emac->iep->def_inc */ + sc_desc.CMP0_current = cycletime - emac->iep->def_inc; memcpy_toio(sc_descp, &sc_desc, sizeof(sc_desc)); @@ -1249,6 +501,8 @@ static int prueth_perout_enable(void *clockops_data, struct prueth_emac *emac = clockops_data; u32 reduction_factor = 0, offset = 0; struct timespec64 ts; + u64 current_cycle; + u64 start_offset; u64 ns_period; if (!on) @@ -1287,8 +541,14 @@ static int prueth_perout_enable(void *clockops_data, writel(reduction_factor, emac->prueth->shram.va + TIMESYNC_FW_WC_SYNCOUT_REDUCTION_FACTOR_OFFSET); - writel(0, emac->prueth->shram.va + - TIMESYNC_FW_WC_SYNCOUT_START_TIME_CYCLECOUNT_OFFSET); + current_cycle = icssg_read_time(emac->prueth->shram.va + + TIMESYNC_FW_WC_CYCLECOUNT_OFFSET); + + /* Rounding of current_cycle count to next second */ + start_offset = roundup(current_cycle, MSEC_PER_SEC); + + hi_lo_writeq(start_offset, emac->prueth->shram.va + + TIMESYNC_FW_WC_SYNCOUT_START_TIME_CYCLECOUNT_OFFSET); return 0; } @@ -1299,6 +559,140 @@ const struct icss_iep_clockops prueth_iep_clockops = { .perout_enable = prueth_perout_enable, }; +static int icssg_prueth_add_mcast(struct net_device *ndev, const u8 *addr) +{ + struct net_device *real_dev; + struct prueth_emac *emac; + int port_mask; + u8 vlan_id; + + vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_MAC; + real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev; + emac = netdev_priv(real_dev); + + port_mask = BIT(emac->port_id) | icssg_fdb_lookup(emac, addr, vlan_id); + icssg_fdb_add_del(emac, addr, vlan_id, port_mask, true); + icssg_vtbl_modify(emac, vlan_id, port_mask, port_mask, true); + + return 0; +} + +static int icssg_prueth_del_mcast(struct net_device *ndev, const u8 *addr) +{ + struct net_device *real_dev; + struct prueth_emac *emac; + int other_port_mask; + int port_mask; + u8 vlan_id; + + vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_MAC; + real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev; + emac = netdev_priv(real_dev); + + port_mask = BIT(emac->port_id); + other_port_mask = port_mask ^ icssg_fdb_lookup(emac, addr, vlan_id); + + icssg_fdb_add_del(emac, addr, vlan_id, port_mask, false); + icssg_vtbl_modify(emac, vlan_id, port_mask, port_mask, false); + + if (other_port_mask) { + icssg_fdb_add_del(emac, addr, vlan_id, other_port_mask, true); + icssg_vtbl_modify(emac, vlan_id, other_port_mask, + other_port_mask, true); + } + + return 0; +} + +static void icssg_prueth_hsr_fdb_add_del(struct prueth_emac *emac, + const u8 *addr, u8 vid, bool add) +{ + icssg_fdb_add_del(emac, addr, vid, + ICSSG_FDB_ENTRY_P0_MEMBERSHIP | + ICSSG_FDB_ENTRY_P1_MEMBERSHIP | + ICSSG_FDB_ENTRY_P2_MEMBERSHIP | + ICSSG_FDB_ENTRY_BLOCK, add); + + if (add) + icssg_vtbl_modify(emac, vid, BIT(emac->port_id), + BIT(emac->port_id), add); +} + +static int icssg_prueth_hsr_add_mcast(struct net_device *ndev, const u8 *addr) +{ + struct net_device *real_dev; + struct prueth_emac *emac; + u8 vlan_id, i; + + vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_HSR; + real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev; + + if (is_hsr_master(real_dev)) { + for (i = HSR_PT_SLAVE_A; i < HSR_PT_INTERLINK; i++) { + emac = netdev_priv(hsr_get_port_ndev(real_dev, i)); + if (!emac) + return -EINVAL; + icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id, + true); + } + } else { + emac = netdev_priv(real_dev); + icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id, true); + } + + return 0; +} + +static int icssg_prueth_hsr_del_mcast(struct net_device *ndev, const u8 *addr) +{ + struct net_device *real_dev; + struct prueth_emac *emac; + u8 vlan_id, i; + + vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_HSR; + real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev; + + if (is_hsr_master(real_dev)) { + for (i = HSR_PT_SLAVE_A; i < HSR_PT_INTERLINK; i++) { + emac = netdev_priv(hsr_get_port_ndev(real_dev, i)); + if (!emac) + return -EINVAL; + icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id, + false); + } + } else { + emac = netdev_priv(real_dev); + icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id, false); + } + + return 0; +} + +static int icssg_update_vlan_mcast(struct net_device *vdev, int vid, + void *args) +{ + struct prueth_emac *emac = args; + + if (!vdev || !vid) + return 0; + + netif_addr_lock_bh(vdev); + __hw_addr_sync_multiple(&emac->vlan_mcast_list[vid], &vdev->mc, + vdev->addr_len); + netif_addr_unlock_bh(vdev); + + if (emac->prueth->is_hsr_offload_mode) + __hw_addr_sync_dev(&emac->vlan_mcast_list[vid], vdev, + icssg_prueth_hsr_add_mcast, + icssg_prueth_hsr_del_mcast); + else + __hw_addr_sync_dev(&emac->vlan_mcast_list[vid], vdev, + icssg_prueth_add_mcast, + icssg_prueth_del_mcast); + + return 0; +} + /** * emac_ndo_open - EMAC device open * @ndev: network adapter device @@ -1311,26 +705,19 @@ static int emac_ndo_open(struct net_device *ndev) { struct prueth_emac *emac = netdev_priv(ndev); int ret, i, num_data_chn = emac->tx_ch_num; + struct icssg_flow_cfg __iomem *flow_cfg; struct prueth *prueth = emac->prueth; int slice = prueth_emac_slice(emac); struct device *dev = prueth->dev; int max_rx_flows; int rx_flow; - /* clear SMEM and MSMC settings for all slices */ - if (!prueth->emacs_initialized) { - memset_io(prueth->msmcram.va, 0, prueth->msmcram.size); - memset_io(prueth->shram.va, 0, ICSSG_CONFIG_OFFSET_SLICE1 * PRUETH_NUM_MACS); - } - /* set h/w MAC as user might have re-configured */ ether_addr_copy(emac->mac_addr, ndev->dev_addr); icssg_class_set_mac_addr(prueth->miig_rt, slice, emac->mac_addr); icssg_ft1_set_mac_addr(prueth->miig_rt, slice, emac->mac_addr); - icssg_class_default(prueth->miig_rt, slice, 0); - /* Notify the stack of the actual queue counts. */ ret = netif_set_real_num_tx_queues(ndev, num_data_chn); if (ret) { @@ -1366,18 +753,23 @@ static int emac_ndo_open(struct net_device *ndev) goto cleanup_napi; } - /* reset and start PRU firmware */ - ret = prueth_emac_start(prueth, emac); - if (ret) - goto free_rx_irq; + if (!prueth->emacs_initialized) { + ret = prueth_emac_common_start(prueth); + if (ret) + goto free_rx_irq; + } - icssg_mii_update_mtu(prueth->mii_rt, slice, ndev->max_mtu); + flow_cfg = emac->dram.va + ICSSG_CONFIG_OFFSET + PSI_L_REGULAR_FLOW_ID_BASE_OFFSET; + writew(emac->rx_flow_id_base, &flow_cfg->rx_base_flow); + ret = emac_fdb_flow_id_updated(emac); - if (!prueth->emacs_initialized) { - ret = icss_iep_init(emac->iep, &prueth_iep_clockops, - emac, IEP_DEFAULT_CYCLE_TIME_NS); + if (ret) { + netdev_err(ndev, "Failed to update Rx Flow ID %d", ret); + goto stop; } + icssg_mii_update_mtu(prueth->mii_rt, slice, ndev->max_mtu); + ret = request_threaded_irq(emac->tx_ts_irq, NULL, prueth_tx_ts_irq, IRQF_ONESHOT, dev_name(dev), emac); if (ret) @@ -1422,7 +814,8 @@ reset_rx_chn: free_tx_ts_irq: free_irq(emac->tx_ts_irq, emac); stop: - prueth_emac_stop(emac); + if (!prueth->emacs_initialized) + prueth_emac_common_stop(prueth); free_rx_irq: free_irq(emac->rx_chns.irq[rx_flow], emac); cleanup_napi: @@ -1458,7 +851,10 @@ static int emac_ndo_stop(struct net_device *ndev) if (ndev->phydev) phy_stop(ndev->phydev); - icssg_class_disable(prueth->miig_rt, prueth_emac_slice(emac)); + if (emac->prueth->is_hsr_offload_mode) + __dev_mc_unsync(ndev, icssg_prueth_hsr_del_mcast); + else + __dev_mc_unsync(ndev, icssg_prueth_del_mcast); atomic_set(&emac->tdown_cnt, emac->tx_ch_num); /* ensure new tdown_cnt value is visible */ @@ -1474,8 +870,10 @@ static int emac_ndo_stop(struct net_device *ndev) netdev_err(ndev, "tx teardown timeout\n"); prueth_reset_tx_chan(emac, emac->tx_ch_num, true); - for (i = 0; i < emac->tx_ch_num; i++) + for (i = 0; i < emac->tx_ch_num; i++) { napi_disable(&emac->tx_chns[i].napi_tx); + hrtimer_cancel(&emac->tx_chns[i].tx_hrtimer); + } max_rx_flows = PRUETH_MAX_RX_FLOWS; k3_udma_glue_tdown_rx_chn(emac->rx_chns.rx_chn, true); @@ -1483,6 +881,7 @@ static int emac_ndo_stop(struct net_device *ndev) prueth_reset_rx_chan(&emac->rx_chns, max_rx_flows, true); napi_disable(&emac->napi_rx); + hrtimer_cancel(&emac->rx_hrtimer); cancel_work_sync(&emac->rx_mode_work); @@ -1490,19 +889,13 @@ static int emac_ndo_stop(struct net_device *ndev) cancel_delayed_work_sync(&emac->stats_work); /* stop PRUs */ - prueth_emac_stop(emac); - if (prueth->emacs_initialized == 1) - icss_iep_exit(emac->iep); - - /* stop PRUs */ - prueth_emac_stop(emac); + prueth_emac_common_stop(prueth); free_irq(emac->tx_ts_irq, emac); free_irq(emac->rx_chns.irq[rx_flow], emac); prueth_ndev_del_tx_napi(emac, emac->tx_ch_num); - prueth_cleanup_tx_chns(emac); prueth_cleanup_rx_chns(emac, &emac->rx_chns, max_rx_flows); prueth_cleanup_tx_chns(emac); @@ -1512,11 +905,6 @@ static int emac_ndo_stop(struct net_device *ndev) return 0; } -static void emac_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue) -{ - ndev->stats.tx_errors++; -} - static void emac_ndo_set_rx_mode_work(struct work_struct *work) { struct prueth_emac *emac = container_of(work, struct prueth_emac, rx_mode_work); @@ -1528,23 +916,35 @@ static void emac_ndo_set_rx_mode_work(struct work_struct *work) promisc = ndev->flags & IFF_PROMISC; allmulti = ndev->flags & IFF_ALLMULTI; - emac_set_port_state(emac, ICSSG_EMAC_PORT_UC_FLOODING_DISABLE); - emac_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_DISABLE); + icssg_set_port_state(emac, ICSSG_EMAC_PORT_UC_FLOODING_DISABLE); + icssg_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_DISABLE); if (promisc) { - emac_set_port_state(emac, ICSSG_EMAC_PORT_UC_FLOODING_ENABLE); - emac_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_ENABLE); + icssg_set_port_state(emac, ICSSG_EMAC_PORT_UC_FLOODING_ENABLE); + icssg_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_ENABLE); return; } if (allmulti) { - emac_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_ENABLE); + icssg_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_ENABLE); return; } - if (!netdev_mc_empty(ndev)) { - emac_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_ENABLE); - return; + if (emac->prueth->is_hsr_offload_mode) { + __dev_mc_sync(ndev, icssg_prueth_hsr_add_mcast, + icssg_prueth_hsr_del_mcast); + if (rtnl_trylock()) { + vlan_for_each(emac->prueth->hsr_dev, + icssg_update_vlan_mcast, emac); + rtnl_unlock(); + } + } else { + __dev_mc_sync(ndev, icssg_prueth_add_mcast, + icssg_prueth_del_mcast); + if (rtnl_trylock()) { + vlan_for_each(ndev, icssg_update_vlan_mcast, emac); + rtnl_unlock(); + } } } @@ -1562,112 +962,64 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev) queue_work(emac->cmd_wq, &emac->rx_mode_work); } -static int emac_set_ts_config(struct net_device *ndev, struct ifreq *ifr) +static netdev_features_t emac_ndo_fix_features(struct net_device *ndev, + netdev_features_t features) { - struct prueth_emac *emac = netdev_priv(ndev); - struct hwtstamp_config config; - - if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) - return -EFAULT; - - switch (config.tx_type) { - case HWTSTAMP_TX_OFF: - emac->tx_ts_enabled = 0; - break; - case HWTSTAMP_TX_ON: - emac->tx_ts_enabled = 1; - break; - default: - return -ERANGE; - } - - switch (config.rx_filter) { - case HWTSTAMP_FILTER_NONE: - emac->rx_ts_enabled = 0; - break; - case HWTSTAMP_FILTER_ALL: - case HWTSTAMP_FILTER_SOME: - case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: - case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: - case HWTSTAMP_FILTER_NTP_ALL: - emac->rx_ts_enabled = 1; - config.rx_filter = HWTSTAMP_FILTER_ALL; - break; - default: - return -ERANGE; - } - - return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? - -EFAULT : 0; + /* hsr tag insertion offload and hsr dup offload are tightly coupled in + * firmware implementation. Both these features need to be enabled / + * disabled together. + */ + if (!(ndev->features & (NETIF_F_HW_HSR_DUP | NETIF_F_HW_HSR_TAG_INS))) + if ((features & NETIF_F_HW_HSR_DUP) || + (features & NETIF_F_HW_HSR_TAG_INS)) + features |= NETIF_F_HW_HSR_DUP | + NETIF_F_HW_HSR_TAG_INS; + + if ((ndev->features & NETIF_F_HW_HSR_DUP) || + (ndev->features & NETIF_F_HW_HSR_TAG_INS)) + if (!(features & NETIF_F_HW_HSR_DUP) || + !(features & NETIF_F_HW_HSR_TAG_INS)) + features &= ~(NETIF_F_HW_HSR_DUP | + NETIF_F_HW_HSR_TAG_INS); + + return features; } -static int emac_get_ts_config(struct net_device *ndev, struct ifreq *ifr) +static int emac_ndo_vlan_rx_add_vid(struct net_device *ndev, + __be16 proto, u16 vid) { struct prueth_emac *emac = netdev_priv(ndev); - struct hwtstamp_config config; + struct prueth *prueth = emac->prueth; + int port_mask = BIT(emac->port_id); + int untag_mask = 0; - config.flags = 0; - config.tx_type = emac->tx_ts_enabled ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; - config.rx_filter = emac->rx_ts_enabled ? HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE; + if (prueth->is_hsr_offload_mode) + port_mask |= BIT(PRUETH_PORT_HOST); - return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? - -EFAULT : 0; -} + __hw_addr_init(&emac->vlan_mcast_list[vid]); + netdev_dbg(emac->ndev, "VID add vid:%u port_mask:%X untag_mask %X\n", + vid, port_mask, untag_mask); -static int emac_ndo_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd) -{ - switch (cmd) { - case SIOCGHWTSTAMP: - return emac_get_ts_config(ndev, ifr); - case SIOCSHWTSTAMP: - return emac_set_ts_config(ndev, ifr); - default: - break; - } + icssg_vtbl_modify(emac, vid, port_mask, untag_mask, true); + icssg_set_pvid(emac->prueth, vid, emac->port_id); - return phy_do_ioctl(ndev, ifr, cmd); + return 0; } -static void emac_ndo_get_stats64(struct net_device *ndev, - struct rtnl_link_stats64 *stats) +static int emac_ndo_vlan_rx_del_vid(struct net_device *ndev, + __be16 proto, u16 vid) { struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + int port_mask = BIT(emac->port_id); + int untag_mask = 0; - emac_update_hardware_stats(emac); - - stats->rx_packets = emac_get_stat_by_name(emac, "rx_packets"); - stats->rx_bytes = emac_get_stat_by_name(emac, "rx_bytes"); - stats->tx_packets = emac_get_stat_by_name(emac, "tx_packets"); - stats->tx_bytes = emac_get_stat_by_name(emac, "tx_bytes"); - stats->rx_crc_errors = emac_get_stat_by_name(emac, "rx_crc_errors"); - stats->rx_over_errors = emac_get_stat_by_name(emac, "rx_over_errors"); - stats->multicast = emac_get_stat_by_name(emac, "rx_multicast_frames"); - - stats->rx_errors = ndev->stats.rx_errors; - stats->rx_dropped = ndev->stats.rx_dropped; - stats->tx_errors = ndev->stats.tx_errors; - stats->tx_dropped = ndev->stats.tx_dropped; -} - -static int emac_ndo_get_phys_port_name(struct net_device *ndev, char *name, - size_t len) -{ - struct prueth_emac *emac = netdev_priv(ndev); - int ret; + if (prueth->is_hsr_offload_mode) + port_mask = BIT(PRUETH_PORT_HOST); - ret = snprintf(name, len, "p%d", emac->port_id); - if (ret >= len) - return -EINVAL; + netdev_dbg(emac->ndev, "VID del vid:%u port_mask:%X untag_mask %X\n", + vid, port_mask, untag_mask); + icssg_vtbl_modify(emac, vid, port_mask, untag_mask, false); return 0; } @@ -1675,52 +1027,19 @@ static int emac_ndo_get_phys_port_name(struct net_device *ndev, char *name, static const struct net_device_ops emac_netdev_ops = { .ndo_open = emac_ndo_open, .ndo_stop = emac_ndo_stop, - .ndo_start_xmit = emac_ndo_start_xmit, + .ndo_start_xmit = icssg_ndo_start_xmit, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, - .ndo_tx_timeout = emac_ndo_tx_timeout, + .ndo_tx_timeout = icssg_ndo_tx_timeout, .ndo_set_rx_mode = emac_ndo_set_rx_mode, - .ndo_eth_ioctl = emac_ndo_ioctl, - .ndo_get_stats64 = emac_ndo_get_stats64, - .ndo_get_phys_port_name = emac_ndo_get_phys_port_name, + .ndo_eth_ioctl = icssg_ndo_ioctl, + .ndo_get_stats64 = icssg_ndo_get_stats64, + .ndo_get_phys_port_name = icssg_ndo_get_phys_port_name, + .ndo_fix_features = emac_ndo_fix_features, + .ndo_vlan_rx_add_vid = emac_ndo_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = emac_ndo_vlan_rx_del_vid, }; -/* get emac_port corresponding to eth_node name */ -static int prueth_node_port(struct device_node *eth_node) -{ - u32 port_id; - int ret; - - ret = of_property_read_u32(eth_node, "reg", &port_id); - if (ret) - return ret; - - if (port_id == 0) - return PRUETH_PORT_MII0; - else if (port_id == 1) - return PRUETH_PORT_MII1; - else - return PRUETH_PORT_INVALID; -} - -/* get MAC instance corresponding to eth_node name */ -static int prueth_node_mac(struct device_node *eth_node) -{ - u32 port_id; - int ret; - - ret = of_property_read_u32(eth_node, "reg", &port_id); - if (ret) - return ret; - - if (port_id == 0) - return PRUETH_MAC0; - else if (port_id == 1) - return PRUETH_MAC1; - else - return PRUETH_MAC_INVALID; -} - static int prueth_netdev_init(struct prueth *prueth, struct device_node *eth_node) { @@ -1754,7 +1073,7 @@ static int prueth_netdev_init(struct prueth *prueth, } INIT_WORK(&emac->rx_mode_work, emac_ndo_set_rx_mode_work); - INIT_DELAYED_WORK(&emac->stats_work, emac_stats_work_handler); + INIT_DELAYED_WORK(&emac->stats_work, icssg_stats_work_handler); ret = pruss_request_mem_region(prueth->pruss, port == PRUETH_PORT_MII0 ? @@ -1840,14 +1159,19 @@ static int prueth_netdev_init(struct prueth *prueth, } ether_addr_copy(emac->mac_addr, ndev->dev_addr); + ndev->dev.of_node = eth_node; ndev->min_mtu = PRUETH_MIN_PKT_SIZE; ndev->max_mtu = PRUETH_MAX_MTU; ndev->netdev_ops = &emac_netdev_ops; ndev->ethtool_ops = &icssg_ethtool_ops; ndev->hw_features = NETIF_F_SG; - ndev->features = ndev->hw_features; + ndev->features = ndev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; + ndev->hw_features |= NETIF_PRUETH_HSR_OFFLOAD_FEATURES; - netif_napi_add(ndev, &emac->napi_rx, emac_napi_rx_poll); + netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll); + hrtimer_init(&emac->rx_hrtimer, CLOCK_MONOTONIC, + HRTIMER_MODE_REL_PINNED); + emac->rx_hrtimer.function = &emac_rx_timer_callback; prueth->emac[mac] = emac; return 0; @@ -1864,88 +1188,321 @@ free_ndev: return ret; } -static void prueth_netdev_exit(struct prueth *prueth, - struct device_node *eth_node) +bool prueth_dev_check(const struct net_device *ndev) +{ + if (ndev->netdev_ops == &emac_netdev_ops && netif_running(ndev)) { + struct prueth_emac *emac = netdev_priv(ndev); + + return emac->prueth->is_switch_mode; + } + + return false; +} + +static void prueth_offload_fwd_mark_update(struct prueth *prueth) +{ + int set_val = 0; + int i; + + if (prueth->br_members == (BIT(PRUETH_PORT_MII0) | BIT(PRUETH_PORT_MII1))) + set_val = 1; + + dev_dbg(prueth->dev, "set offload_fwd_mark %d\n", set_val); + + for (i = PRUETH_MAC0; i < PRUETH_NUM_MACS; i++) { + struct prueth_emac *emac = prueth->emac[i]; + + if (!emac || !emac->ndev) + continue; + + emac->offload_fwd_mark = set_val; + } +} + +static int prueth_emac_restart(struct prueth *prueth) +{ + struct prueth_emac *emac0 = prueth->emac[PRUETH_MAC0]; + struct prueth_emac *emac1 = prueth->emac[PRUETH_MAC1]; + int ret; + + /* Detach the net_device for both PRUeth ports*/ + if (netif_running(emac0->ndev)) + netif_device_detach(emac0->ndev); + if (netif_running(emac1->ndev)) + netif_device_detach(emac1->ndev); + + /* Disable both PRUeth ports */ + ret = icssg_set_port_state(emac0, ICSSG_EMAC_PORT_DISABLE); + ret |= icssg_set_port_state(emac1, ICSSG_EMAC_PORT_DISABLE); + if (ret) + return ret; + + /* Stop both pru cores for both PRUeth ports*/ + ret = prueth_emac_common_stop(prueth); + if (ret) { + dev_err(prueth->dev, "Failed to stop the firmwares"); + return ret; + } + + /* Start both pru cores for both PRUeth ports */ + ret = prueth_emac_common_start(prueth); + if (ret) { + dev_err(prueth->dev, "Failed to start the firmwares"); + return ret; + } + + /* Enable forwarding for both PRUeth ports */ + ret = icssg_set_port_state(emac0, ICSSG_EMAC_PORT_FORWARD); + ret |= icssg_set_port_state(emac1, ICSSG_EMAC_PORT_FORWARD); + + /* Attache net_device for both PRUeth ports */ + netif_device_attach(emac0->ndev); + netif_device_attach(emac1->ndev); + + return ret; +} + +static void icssg_change_mode(struct prueth *prueth) { struct prueth_emac *emac; - enum prueth_mac mac; + int mac, ret; - mac = prueth_node_mac(eth_node); - if (mac == PRUETH_MAC_INVALID) + ret = prueth_emac_restart(prueth); + if (ret) { + dev_err(prueth->dev, "Failed to restart the firmwares, aborting the process"); return; + } - emac = prueth->emac[mac]; - if (!emac) - return; + for (mac = PRUETH_MAC0; mac < PRUETH_NUM_MACS; mac++) { + emac = prueth->emac[mac]; + if (prueth->is_hsr_offload_mode) { + if (emac->ndev->features & NETIF_F_HW_HSR_TAG_RM) + icssg_set_port_state(emac, ICSSG_EMAC_HSR_RX_OFFLOAD_ENABLE); + else + icssg_set_port_state(emac, ICSSG_EMAC_HSR_RX_OFFLOAD_DISABLE); + } - if (of_phy_is_fixed_link(emac->phy_node)) - of_phy_deregister_fixed_link(emac->phy_node); + if (netif_running(emac->ndev)) { + icssg_fdb_add_del(emac, eth_stp_addr, prueth->default_vlan, + ICSSG_FDB_ENTRY_P0_MEMBERSHIP | + ICSSG_FDB_ENTRY_P1_MEMBERSHIP | + ICSSG_FDB_ENTRY_P2_MEMBERSHIP | + ICSSG_FDB_ENTRY_BLOCK, + true); + icssg_vtbl_modify(emac, emac->port_vlan | DEFAULT_VID, + BIT(emac->port_id) | DEFAULT_PORT_MASK, + BIT(emac->port_id) | DEFAULT_UNTAG_MASK, + true); + if (prueth->is_hsr_offload_mode) + icssg_vtbl_modify(emac, DEFAULT_VID, + DEFAULT_PORT_MASK, + DEFAULT_UNTAG_MASK, true); + icssg_set_pvid(prueth, emac->port_vlan, emac->port_id); + if (prueth->is_switch_mode) + icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE); + } + } +} - netif_napi_del(&emac->napi_rx); +static int prueth_netdevice_port_link(struct net_device *ndev, + struct net_device *br_ndev, + struct netlink_ext_ack *extack) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + int err; - pruss_release_mem_region(prueth->pruss, &emac->dram); - destroy_workqueue(emac->cmd_wq); - free_netdev(emac->ndev); - prueth->emac[mac] = NULL; + if (!prueth->br_members) { + prueth->hw_bridge_dev = br_ndev; + } else { + /* This is adding the port to a second bridge, this is + * unsupported + */ + if (prueth->hw_bridge_dev != br_ndev) + return -EOPNOTSUPP; + } + + err = switchdev_bridge_port_offload(br_ndev, ndev, emac, + &prueth->prueth_switchdev_nb, + &prueth->prueth_switchdev_bl_nb, + false, extack); + if (err) + return err; + + prueth->br_members |= BIT(emac->port_id); + + if (!prueth->is_switch_mode) { + if (prueth->br_members & BIT(PRUETH_PORT_MII0) && + prueth->br_members & BIT(PRUETH_PORT_MII1)) { + prueth->is_switch_mode = true; + prueth->default_vlan = PRUETH_DFLT_VLAN_SW; + emac->port_vlan = prueth->default_vlan; + icssg_change_mode(prueth); + } + } + + prueth_offload_fwd_mark_update(prueth); + + return NOTIFY_DONE; } -static int prueth_get_cores(struct prueth *prueth, int slice) +static void prueth_netdevice_port_unlink(struct net_device *ndev) { - struct device *dev = prueth->dev; - enum pruss_pru_id pruss_id; - struct device_node *np; - int idx = -1, ret; + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + int ret; - np = dev->of_node; + prueth->br_members &= ~BIT(emac->port_id); - switch (slice) { - case ICSS_SLICE0: - idx = 0; - break; - case ICSS_SLICE1: - idx = 3; - break; - default: - return -EINVAL; + if (prueth->is_switch_mode) { + prueth->is_switch_mode = false; + emac->port_vlan = 0; + ret = prueth_emac_restart(prueth); + if (ret) { + dev_err(prueth->dev, "Failed to restart the firmwares, aborting the process"); + return; + } } - prueth->pru[slice] = pru_rproc_get(np, idx, &pruss_id); - if (IS_ERR(prueth->pru[slice])) { - ret = PTR_ERR(prueth->pru[slice]); - prueth->pru[slice] = NULL; - return dev_err_probe(dev, ret, "unable to get PRU%d\n", slice); + prueth_offload_fwd_mark_update(prueth); + + if (!prueth->br_members) + prueth->hw_bridge_dev = NULL; +} + +static int prueth_hsr_port_link(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + struct prueth_emac *emac0; + struct prueth_emac *emac1; + + emac0 = prueth->emac[PRUETH_MAC0]; + emac1 = prueth->emac[PRUETH_MAC1]; + + if (prueth->is_switch_mode) + return -EOPNOTSUPP; + + prueth->hsr_members |= BIT(emac->port_id); + if (!prueth->is_hsr_offload_mode) { + if (prueth->hsr_members & BIT(PRUETH_PORT_MII0) && + prueth->hsr_members & BIT(PRUETH_PORT_MII1)) { + if (!(emac0->ndev->features & + NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && + !(emac1->ndev->features & + NETIF_PRUETH_HSR_OFFLOAD_FEATURES)) + return -EOPNOTSUPP; + prueth->is_hsr_offload_mode = true; + prueth->default_vlan = PRUETH_DFLT_VLAN_HSR; + emac0->port_vlan = prueth->default_vlan; + emac1->port_vlan = prueth->default_vlan; + icssg_change_mode(prueth); + netdev_dbg(ndev, "Enabling HSR offload mode\n"); + } } - prueth->pru_id[slice] = pruss_id; - idx++; - prueth->rtu[slice] = pru_rproc_get(np, idx, NULL); - if (IS_ERR(prueth->rtu[slice])) { - ret = PTR_ERR(prueth->rtu[slice]); - prueth->rtu[slice] = NULL; - return dev_err_probe(dev, ret, "unable to get RTU%d\n", slice); + return 0; +} + +static void prueth_hsr_port_unlink(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + struct prueth_emac *emac0; + struct prueth_emac *emac1; + int ret; + + emac0 = prueth->emac[PRUETH_MAC0]; + emac1 = prueth->emac[PRUETH_MAC1]; + + prueth->hsr_members &= ~BIT(emac->port_id); + if (prueth->is_hsr_offload_mode) { + prueth->is_hsr_offload_mode = false; + emac0->port_vlan = 0; + emac1->port_vlan = 0; + prueth->hsr_dev = NULL; + ret = prueth_emac_restart(prueth); + if (ret) { + dev_err(prueth->dev, "Failed to restart the firmwares, aborting the process"); + return; + } + netdev_dbg(ndev, "Disabling HSR Offload mode\n"); } +} - idx++; - prueth->txpru[slice] = pru_rproc_get(np, idx, NULL); - if (IS_ERR(prueth->txpru[slice])) { - ret = PTR_ERR(prueth->txpru[slice]); - prueth->txpru[slice] = NULL; - return dev_err_probe(dev, ret, "unable to get TX_PRU%d\n", slice); +/* netdev notifier */ +static int prueth_netdevice_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr); + struct net_device *ndev = netdev_notifier_info_to_dev(ptr); + struct netdev_notifier_changeupper_info *info; + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + int ret = NOTIFY_DONE; + + if (ndev->netdev_ops != &emac_netdev_ops) + return NOTIFY_DONE; + + switch (event) { + case NETDEV_CHANGEUPPER: + info = ptr; + + if ((ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && + is_hsr_master(info->upper_dev)) { + if (info->linking) { + if (!prueth->hsr_dev) { + prueth->hsr_dev = info->upper_dev; + icssg_class_set_host_mac_addr(prueth->miig_rt, + prueth->hsr_dev->dev_addr); + } else { + if (prueth->hsr_dev != info->upper_dev) { + netdev_dbg(ndev, "Both interfaces must be linked to same upper device\n"); + return -EOPNOTSUPP; + } + } + prueth_hsr_port_link(ndev); + } else { + prueth_hsr_port_unlink(ndev); + } + } + + if (netif_is_bridge_master(info->upper_dev)) { + if (info->linking) + ret = prueth_netdevice_port_link(ndev, info->upper_dev, extack); + else + prueth_netdevice_port_unlink(ndev); + } + break; + default: + return NOTIFY_DONE; } - return 0; + return notifier_from_errno(ret); } -static void prueth_put_cores(struct prueth *prueth, int slice) +static int prueth_register_notifiers(struct prueth *prueth) { - if (prueth->txpru[slice]) - pru_rproc_put(prueth->txpru[slice]); + int ret = 0; + + prueth->prueth_netdevice_nb.notifier_call = &prueth_netdevice_event; + ret = register_netdevice_notifier(&prueth->prueth_netdevice_nb); + if (ret) { + dev_err(prueth->dev, "can't register netdevice notifier\n"); + return ret; + } - if (prueth->rtu[slice]) - pru_rproc_put(prueth->rtu[slice]); + ret = prueth_switchdev_register_notifiers(prueth); + if (ret) + unregister_netdevice_notifier(&prueth->prueth_netdevice_nb); - if (prueth->pru[slice]) - pru_rproc_put(prueth->pru[slice]); + return ret; +} + +static void prueth_unregister_notifiers(struct prueth *prueth) +{ + prueth_switchdev_unregister_notifiers(prueth); + unregister_netdevice_notifier(&prueth->prueth_netdevice_nb); } static int prueth_probe(struct platform_device *pdev) @@ -2037,14 +1594,17 @@ static int prueth_probe(struct platform_device *pdev) return -ENODEV; } - if (eth0_node) { - ret = prueth_get_cores(prueth, ICSS_SLICE0); - if (ret) - goto put_cores; + prueth->pa_stats = syscon_regmap_lookup_by_phandle(np, "ti,pa-stats"); + if (IS_ERR(prueth->pa_stats)) { + dev_err(dev, "couldn't get ti,pa-stats syscon regmap\n"); + prueth->pa_stats = NULL; } - if (eth1_node) { - ret = prueth_get_cores(prueth, ICSS_SLICE1); + if (eth0_node || eth1_node) { + ret = prueth_get_cores(prueth, ICSS_SLICE0, false); + if (ret) + goto put_cores; + ret = prueth_get_cores(prueth, ICSS_SLICE1, false); if (ret) goto put_cores; } @@ -2075,6 +1635,9 @@ static int prueth_probe(struct platform_device *pdev) } msmc_ram_size = MSMC_RAM_SIZE; + prueth->is_switchmode_supported = prueth->pdata.switch_mode; + if (prueth->is_switchmode_supported) + msmc_ram_size = MSMC_RAM_SIZE_SWITCH_MODE; /* NOTE: FW bug needs buffer base to be 64KB aligned */ prueth->msmcram.va = @@ -2115,6 +1678,8 @@ static int prueth_probe(struct platform_device *pdev) icss_iep_init_fw(prueth->iep1); } + spin_lock_init(&prueth->vtbl_lock); + spin_lock_init(&prueth->stats_lock); /* setup netdev interfaces */ if (eth0_node) { ret = prueth_netdev_init(prueth, eth0_node); @@ -2124,8 +1689,8 @@ static int prueth_probe(struct platform_device *pdev) goto exit_iep; } - if (of_find_property(eth0_node, "ti,half-duplex-capable", NULL)) - prueth->emac[PRUETH_MAC0]->half_duplex = 1; + prueth->emac[PRUETH_MAC0]->half_duplex = + of_property_read_bool(eth0_node, "ti,half-duplex-capable"); prueth->emac[PRUETH_MAC0]->iep = prueth->iep0; } @@ -2138,8 +1703,8 @@ static int prueth_probe(struct platform_device *pdev) goto netdev_exit; } - if (of_find_property(eth1_node, "ti,half-duplex-capable", NULL)) - prueth->emac[PRUETH_MAC1]->half_duplex = 1; + prueth->emac[PRUETH_MAC1]->half_duplex = + of_property_read_bool(eth1_node, "ti,half-duplex-capable"); prueth->emac[PRUETH_MAC1]->iep = prueth->iep0; } @@ -2154,7 +1719,12 @@ static int prueth_probe(struct platform_device *pdev) prueth->registered_netdevs[PRUETH_MAC0] = prueth->emac[PRUETH_MAC0]->ndev; - emac_phy_connect(prueth->emac[PRUETH_MAC0]); + ret = emac_phy_connect(prueth->emac[PRUETH_MAC0]); + if (ret) { + dev_err(dev, + "can't connect to MII0 PHY, error -%d", ret); + goto netdev_unregister; + } phy_attached_info(prueth->emac[PRUETH_MAC0]->ndev->phydev); } @@ -2166,10 +1736,23 @@ static int prueth_probe(struct platform_device *pdev) } prueth->registered_netdevs[PRUETH_MAC1] = prueth->emac[PRUETH_MAC1]->ndev; - emac_phy_connect(prueth->emac[PRUETH_MAC1]); + ret = emac_phy_connect(prueth->emac[PRUETH_MAC1]); + if (ret) { + dev_err(dev, + "can't connect to MII1 PHY, error %d", ret); + goto netdev_unregister; + } phy_attached_info(prueth->emac[PRUETH_MAC1]->ndev->phydev); } + if (prueth->is_switchmode_supported) { + ret = prueth_register_notifiers(prueth); + if (ret) + goto netdev_unregister; + + sprintf(prueth->switch_id, "%s", dev_name(dev)); + } + dev_info(dev, "TI PRU ethernet driver initialized: %s EMAC mode\n", (!eth0_node || !eth1_node) ? "single" : "dual"); @@ -2220,14 +1803,12 @@ put_pruss: pruss_put(prueth->pruss); put_cores: - if (eth1_node) { - prueth_put_cores(prueth, ICSS_SLICE1); - of_node_put(eth1_node); - } - - if (eth0_node) { + if (eth0_node || eth1_node) { prueth_put_cores(prueth, ICSS_SLICE0); of_node_put(eth0_node); + + prueth_put_cores(prueth, ICSS_SLICE1); + of_node_put(eth1_node); } return ret; @@ -2239,6 +1820,8 @@ static void prueth_remove(struct platform_device *pdev) struct device_node *eth_node; int i; + prueth_unregister_notifiers(prueth); + for (i = 0; i < PRUETH_NUM_MACS; i++) { if (!prueth->registered_netdevs[i]) continue; @@ -2277,69 +1860,16 @@ static void prueth_remove(struct platform_device *pdev) prueth_put_cores(prueth, ICSS_SLICE0); } -#ifdef CONFIG_PM_SLEEP -static int prueth_suspend(struct device *dev) -{ - struct prueth *prueth = dev_get_drvdata(dev); - struct net_device *ndev; - int i, ret; - - for (i = 0; i < PRUETH_NUM_MACS; i++) { - ndev = prueth->registered_netdevs[i]; - - if (!ndev) - continue; - - if (netif_running(ndev)) { - netif_device_detach(ndev); - ret = emac_ndo_stop(ndev); - if (ret < 0) { - netdev_err(ndev, "failed to stop: %d", ret); - return ret; - } - } - } - - return 0; -} - -static int prueth_resume(struct device *dev) -{ - struct prueth *prueth = dev_get_drvdata(dev); - struct net_device *ndev; - int i, ret; - - for (i = 0; i < PRUETH_NUM_MACS; i++) { - ndev = prueth->registered_netdevs[i]; - - if (!ndev) - continue; - - if (netif_running(ndev)) { - ret = emac_ndo_open(ndev); - if (ret < 0) { - netdev_err(ndev, "failed to start: %d", ret); - return ret; - } - netif_device_attach(ndev); - } - } - - return 0; -} -#endif /* CONFIG_PM_SLEEP */ - -static const struct dev_pm_ops prueth_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(prueth_suspend, prueth_resume) -}; - static const struct prueth_pdata am654_icssg_pdata = { .fdqring_mode = K3_RINGACC_RING_MODE_MESSAGE, .quirk_10m_link_issue = 1, + .switch_mode = 1, }; static const struct prueth_pdata am64x_icssg_pdata = { .fdqring_mode = K3_RINGACC_RING_MODE_RING, + .quirk_10m_link_issue = 1, + .switch_mode = 1, }; static const struct of_device_id prueth_dt_match[] = { @@ -2351,7 +1881,7 @@ MODULE_DEVICE_TABLE(of, prueth_dt_match); static struct platform_driver prueth_driver = { .probe = prueth_probe, - .remove_new = prueth_remove, + .remove = prueth_remove, .driver = { .name = "icssg-prueth", .of_match_table = prueth_dt_match, diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h index 8b6d6b497010..f41786b05741 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h @@ -50,11 +50,18 @@ #define ICSSG_MAX_RFLOWS 8 /* per slice */ +#define ICSSG_NUM_PA_STATS 4 +#define ICSSG_NUM_MIIG_STATS 60 /* Number of ICSSG related stats */ -#define ICSSG_NUM_STATS 60 +#define ICSSG_NUM_STATS (ICSSG_NUM_MIIG_STATS + ICSSG_NUM_PA_STATS) #define ICSSG_NUM_STANDARD_STATS 31 #define ICSSG_NUM_ETHTOOL_STATS (ICSSG_NUM_STATS - ICSSG_NUM_STANDARD_STATS) +#define IEP_DEFAULT_CYCLE_TIME_NS 1000000 /* 1 ms */ + +#define PRUETH_UNDIRECTED_PKT_DST_TAG 0 +#define PRUETH_UNDIRECTED_PKT_TAG_INS BIT(30) + /* Firmware status codes */ #define ICSS_HS_FW_READY 0x55555555 #define ICSS_HS_FW_DEAD 0xDEAD0000 /* lower 16 bits contain error code */ @@ -76,6 +83,12 @@ #define ICSS_CMD_ADD_FILTER 0x7 #define ICSS_CMD_ADD_MAC 0x8 +/* VLAN Filtering Related MACROs */ +#define PRUETH_DFLT_VLAN_HSR 1 +#define PRUETH_DFLT_VLAN_SW 1 +#define PRUETH_DFLT_VLAN_MAC 0 +#define MAX_VLAN_ID 256 + /* In switch mode there are 3 real ports i.e. 3 mac addrs. * however Linux sees only the host side port. The other 2 ports * are the switch ports. @@ -106,6 +119,8 @@ struct prueth_tx_chn { u32 descs_num; unsigned int irq; char name[32]; + struct hrtimer tx_hrtimer; + unsigned long tx_pace_timeout_ns; }; struct prueth_rx_chn { @@ -125,9 +140,12 @@ struct prueth_rx_chn { #define PRUETH_MAX_TX_TS_REQUESTS 50 /* Max simultaneous TX_TS requests */ +/* Minimum coalesce time in usecs for both Tx and Rx */ +#define ICSSG_MIN_COALESCE_USECS 20 + /* data for each emac port */ struct prueth_emac { - bool fw_running; + bool is_sr1; struct prueth *prueth; struct net_device *ndev; u8 mac_addr[6]; @@ -155,6 +173,10 @@ struct prueth_emac { int rx_flow_id_base; int tx_ch_num; + /* SR1.0 Management channel */ + struct prueth_rx_chn rx_mgm_chn; + int rx_mgm_flow_id_base; + spinlock_t lock; /* serialize access */ /* TX HW Timestamping */ @@ -165,7 +187,7 @@ struct prueth_emac { u8 cmd_seq; /* shutdown related */ - u32 cmd_data[4]; + __le32 cmd_data[4]; struct completion cmd_complete; /* Mutex to serialize access to firmware command interface */ struct mutex cmd_lock; @@ -174,18 +196,36 @@ struct prueth_emac { struct pruss_mem_region dram; + bool offload_fwd_mark; + int port_vlan; + struct delayed_work stats_work; - u64 stats[ICSSG_NUM_STATS]; + u64 stats[ICSSG_NUM_MIIG_STATS]; + u64 pa_stats[ICSSG_NUM_PA_STATS]; + + /* RX IRQ Coalescing Related */ + struct hrtimer rx_hrtimer; + unsigned long rx_pace_timeout_ns; + + struct netdev_hw_addr_list vlan_mcast_list[MAX_VLAN_ID]; }; /** * struct prueth_pdata - PRUeth platform data * @fdqring_mode: Free desc queue mode * @quirk_10m_link_issue: 10M link detect errata + * @switch_mode: switch firmware support */ struct prueth_pdata { enum k3_ring_mode fdqring_mode; u32 quirk_10m_link_issue:1; + u32 switch_mode:1; +}; + +struct icssg_firmwares { + char *pru; + char *rtu; + char *txpru; }; /** @@ -203,6 +243,7 @@ struct prueth_pdata { * @registered_netdevs: list of registered netdevs * @miig_rt: regmap to mii_g_rt block * @mii_rt: regmap to mii_rt block + * @pa_stats: regmap to pa_stats block * @pru_id: ID for each of the PRUs * @pdev: pointer to ICSSG platform device * @pdata: pointer to platform data for ICSSG driver @@ -210,6 +251,19 @@ struct prueth_pdata { * @emacs_initialized: num of EMACs/ext ports that are up/running * @iep0: pointer to IEP0 device * @iep1: pointer to IEP1 device + * @vlan_tbl: VLAN-FID table pointer + * @hw_bridge_dev: pointer to HW bridge net device + * @hsr_dev: pointer to the HSR net device + * @br_members: bitmask of bridge member ports + * @hsr_members: bitmask of hsr member ports + * @prueth_netdevice_nb: netdevice notifier block + * @prueth_switchdev_nb: switchdev notifier block + * @prueth_switchdev_bl_nb: switchdev blocking notifier block + * @is_switch_mode: flag to indicate if device is in Switch mode + * @is_hsr_offload_mode: flag to indicate if device is in hsr offload mode + * @is_switchmode_supported: indicates platform support for switch mode + * @switch_id: ID for mapping switch ports to bridge + * @default_vlan: Default VLAN for host */ struct prueth { struct device *dev; @@ -226,6 +280,7 @@ struct prueth { struct net_device *registered_netdevs[PRUETH_NUM_MACS]; struct regmap *miig_rt; struct regmap *mii_rt; + struct regmap *pa_stats; enum pruss_pru_id pru_id[PRUSS_NUM_PRUS]; struct platform_device *pdev; @@ -234,6 +289,24 @@ struct prueth { int emacs_initialized; struct icss_iep *iep0; struct icss_iep *iep1; + struct prueth_vlan_tbl *vlan_tbl; + + struct net_device *hw_bridge_dev; + struct net_device *hsr_dev; + u8 br_members; + u8 hsr_members; + struct notifier_block prueth_netdevice_nb; + struct notifier_block prueth_switchdev_nb; + struct notifier_block prueth_switchdev_bl_nb; + bool is_switch_mode; + bool is_hsr_offload_mode; + bool is_switchmode_supported; + unsigned char switch_id[MAX_PHYS_ITEM_ID_LEN]; + int default_vlan; + /** @vtbl_lock: Lock for vtbl in shared memory */ + spinlock_t vtbl_lock; + /** @stats_lock: Lock for reading icssg stats */ + spinlock_t stats_lock; }; struct emac_tx_ts_response { @@ -243,6 +316,13 @@ struct emac_tx_ts_response { u32 hi_ts; }; +struct emac_tx_ts_response_sr1 { + __le32 lo_ts; + __le32 hi_ts; + __le32 reserved; + __le32 cookie; +}; + /* get PRUSS SLICE number from prueth_emac */ static inline int prueth_emac_slice(struct prueth_emac *emac) { @@ -257,32 +337,111 @@ static inline int prueth_emac_slice(struct prueth_emac *emac) } extern const struct ethtool_ops icssg_ethtool_ops; +extern const struct dev_pm_ops prueth_dev_pm_ops; + +static inline u64 icssg_read_time(const void __iomem *addr) +{ + u32 low, high; + + do { + high = readl(addr + 4); + low = readl(addr); + } while (high != readl(addr + 4)); + + return low + ((u64)high << 32); +} /* Classifier helpers */ void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac); void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac); void icssg_class_disable(struct regmap *miig_rt, int slice); -void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti); +void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti, + bool is_sr1); +void icssg_class_promiscuous_sr1(struct regmap *miig_rt, int slice); +void icssg_class_add_mcast_sr1(struct regmap *miig_rt, int slice, + struct net_device *ndev); void icssg_ft1_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac_addr); /* config helpers */ void icssg_config_ipg(struct prueth_emac *emac); int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice); -int emac_set_port_state(struct prueth_emac *emac, - enum icssg_port_state_cmd state); +int icssg_set_port_state(struct prueth_emac *emac, + enum icssg_port_state_cmd state); void icssg_config_set_speed(struct prueth_emac *emac); void icssg_config_half_duplex(struct prueth_emac *emac); +void icssg_init_emac_mode(struct prueth *prueth); +void icssg_init_fw_offload_mode(struct prueth *prueth); /* Buffer queue helpers */ int icssg_queue_pop(struct prueth *prueth, u8 queue); void icssg_queue_push(struct prueth *prueth, int queue, u16 addr); u32 icssg_queue_level(struct prueth *prueth, int queue); +int icssg_send_fdb_msg(struct prueth_emac *emac, struct mgmt_cmd *cmd, + struct mgmt_cmd_rsp *rsp); +int icssg_fdb_add_del(struct prueth_emac *emac, const unsigned char *addr, + u8 vid, u8 fid_c2, bool add); +int icssg_fdb_lookup(struct prueth_emac *emac, const unsigned char *addr, + u8 vid); +void icssg_vtbl_modify(struct prueth_emac *emac, u8 vid, u8 port_mask, + u8 untag_mask, bool add); +u16 icssg_get_pvid(struct prueth_emac *emac); +void icssg_set_pvid(struct prueth *prueth, u8 vid, u8 port); +int emac_fdb_flow_id_updated(struct prueth_emac *emac); #define prueth_napi_to_tx_chn(pnapi) \ container_of(pnapi, struct prueth_tx_chn, napi_tx) -void emac_stats_work_handler(struct work_struct *work); +void icssg_stats_work_handler(struct work_struct *work); void emac_update_hardware_stats(struct prueth_emac *emac); int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name); + +/* Common functions */ +void prueth_cleanup_rx_chns(struct prueth_emac *emac, + struct prueth_rx_chn *rx_chn, + int max_rflows); +void prueth_cleanup_tx_chns(struct prueth_emac *emac); +void prueth_ndev_del_tx_napi(struct prueth_emac *emac, int num); +void prueth_xmit_free(struct prueth_tx_chn *tx_chn, + struct cppi5_host_desc_t *desc); +int emac_tx_complete_packets(struct prueth_emac *emac, int chn, + int budget, bool *tdown); +int prueth_ndev_add_tx_napi(struct prueth_emac *emac); +int prueth_init_tx_chns(struct prueth_emac *emac); +int prueth_init_rx_chns(struct prueth_emac *emac, + struct prueth_rx_chn *rx_chn, + char *name, u32 max_rflows, + u32 max_desc_num); +int prueth_dma_rx_push(struct prueth_emac *emac, + struct sk_buff *skb, + struct prueth_rx_chn *rx_chn); +void emac_rx_timestamp(struct prueth_emac *emac, + struct sk_buff *skb, u32 *psdata); +enum netdev_tx icssg_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev); +irqreturn_t prueth_rx_irq(int irq, void *dev_id); +void prueth_cleanup_tx_ts(struct prueth_emac *emac); +int icssg_napi_rx_poll(struct napi_struct *napi_rx, int budget); +int prueth_prepare_rx_chan(struct prueth_emac *emac, + struct prueth_rx_chn *chn, + int buf_size); +void prueth_reset_tx_chan(struct prueth_emac *emac, int ch_num, + bool free_skb); +void prueth_reset_rx_chan(struct prueth_rx_chn *chn, + int num_flows, bool disable); +void icssg_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue); +int icssg_ndo_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd); +void icssg_ndo_get_stats64(struct net_device *ndev, + struct rtnl_link_stats64 *stats); +int icssg_ndo_get_phys_port_name(struct net_device *ndev, char *name, + size_t len); +int prueth_node_port(struct device_node *eth_node); +int prueth_node_mac(struct device_node *eth_node); +void prueth_netdev_exit(struct prueth *prueth, + struct device_node *eth_node); +int prueth_get_cores(struct prueth *prueth, int slice, bool is_sr1); +void prueth_put_cores(struct prueth *prueth, int slice); + +/* Revision specific helper */ +u64 icssg_ts_to_ns(u32 hi_sw, u32 hi, u32 lo, u32 cycle_time_ns); + #endif /* __NET_TI_ICSSG_PRUETH_H */ diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c b/drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c new file mode 100644 index 000000000000..64a19ff39562 --- /dev/null +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c @@ -0,0 +1,1251 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Texas Instruments ICSSG SR1.0 Ethernet Driver + * + * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/ + * Copyright (c) Siemens AG, 2024 + * + */ + +#include <linux/etherdevice.h> +#include <linux/genalloc.h> +#include <linux/kernel.h> +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_mdio.h> +#include <linux/of_net.h> +#include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/phy.h> +#include <linux/remoteproc/pruss.h> +#include <linux/pruss_driver.h> + +#include "icssg_prueth.h" +#include "icssg_mii_rt.h" +#include "../k3-cppi-desc-pool.h" + +#define PRUETH_MODULE_DESCRIPTION "PRUSS ICSSG SR1.0 Ethernet driver" + +/* SR1: Set buffer sizes for the pools. There are 8 internal queues + * implemented in firmware, but only 4 tx channels/threads in the Egress + * direction to firmware. Need a high priority queue for management + * messages since they shouldn't be blocked even during high traffic + * situation. So use Q0-Q2 as data queues and Q3 as management queue + * in the max case. However for ease of configuration, use the max + * data queue + 1 for management message if we are not using max + * case. + * + * Allocate 4 MTU buffers per data queue. Firmware requires + * pool sizes to be set for internal queues. Set the upper 5 queue + * pool size to min size of 128 bytes since there are only 3 tx + * data channels and management queue requires only minimum buffer. + * i.e lower queues are used by driver and highest priority queue + * from that is used for management message. + */ + +static int emac_egress_buf_pool_size[] = { + PRUETH_EMAC_BUF_POOL_SIZE_SR1, PRUETH_EMAC_BUF_POOL_SIZE_SR1, + PRUETH_EMAC_BUF_POOL_SIZE_SR1, PRUETH_EMAC_BUF_POOL_MIN_SIZE_SR1, + PRUETH_EMAC_BUF_POOL_MIN_SIZE_SR1, PRUETH_EMAC_BUF_POOL_MIN_SIZE_SR1, + PRUETH_EMAC_BUF_POOL_MIN_SIZE_SR1, PRUETH_EMAC_BUF_POOL_MIN_SIZE_SR1 +}; + +static void icssg_config_sr1(struct prueth *prueth, struct prueth_emac *emac, + int slice) +{ + struct icssg_sr1_config config; + void __iomem *va; + int i, index; + + memset(&config, 0, sizeof(config)); + config.addr_lo = cpu_to_le32(lower_32_bits(prueth->msmcram.pa)); + config.addr_hi = cpu_to_le32(upper_32_bits(prueth->msmcram.pa)); + config.rx_flow_id = cpu_to_le32(emac->rx_flow_id_base); /* flow id for host port */ + config.rx_mgr_flow_id = cpu_to_le32(emac->rx_mgm_flow_id_base); /* for mgm ch */ + config.rand_seed = cpu_to_le32(get_random_u32()); + + for (i = PRUETH_EMAC_BUF_POOL_START_SR1; i < PRUETH_NUM_BUF_POOLS_SR1; i++) { + index = i - PRUETH_EMAC_BUF_POOL_START_SR1; + config.tx_buf_sz[i] = cpu_to_le32(emac_egress_buf_pool_size[index]); + } + + va = prueth->shram.va + slice * ICSSG_CONFIG_OFFSET_SLICE1; + memcpy_toio(va, &config, sizeof(config)); + + emac->speed = SPEED_1000; + emac->duplex = DUPLEX_FULL; +} + +static int emac_send_command_sr1(struct prueth_emac *emac, u32 cmd) +{ + struct cppi5_host_desc_t *first_desc; + u32 pkt_len = sizeof(emac->cmd_data); + __le32 *data = emac->cmd_data; + dma_addr_t desc_dma, buf_dma; + struct prueth_tx_chn *tx_chn; + void **swdata; + int ret = 0; + u32 *epib; + + netdev_dbg(emac->ndev, "Sending cmd %x\n", cmd); + + /* only one command at a time allowed to firmware */ + mutex_lock(&emac->cmd_lock); + data[0] = cpu_to_le32(cmd); + + /* highest priority channel for management messages */ + tx_chn = &emac->tx_chns[emac->tx_ch_num - 1]; + + /* Map the linear buffer */ + buf_dma = dma_map_single(tx_chn->dma_dev, data, pkt_len, DMA_TO_DEVICE); + if (dma_mapping_error(tx_chn->dma_dev, buf_dma)) { + netdev_err(emac->ndev, "cmd %x: failed to map cmd buffer\n", cmd); + ret = -EINVAL; + goto err_unlock; + } + + first_desc = k3_cppi_desc_pool_alloc(tx_chn->desc_pool); + if (!first_desc) { + netdev_err(emac->ndev, "cmd %x: failed to allocate descriptor\n", cmd); + dma_unmap_single(tx_chn->dma_dev, buf_dma, pkt_len, DMA_TO_DEVICE); + ret = -ENOMEM; + goto err_unlock; + } + + cppi5_hdesc_init(first_desc, CPPI5_INFO0_HDESC_EPIB_PRESENT, + PRUETH_NAV_PS_DATA_SIZE); + cppi5_hdesc_set_pkttype(first_desc, PRUETH_PKT_TYPE_CMD); + epib = first_desc->epib; + epib[0] = 0; + epib[1] = 0; + + cppi5_hdesc_attach_buf(first_desc, buf_dma, pkt_len, buf_dma, pkt_len); + swdata = cppi5_hdesc_get_swdata(first_desc); + *swdata = data; + + cppi5_hdesc_set_pktlen(first_desc, pkt_len); + desc_dma = k3_cppi_desc_pool_virt2dma(tx_chn->desc_pool, first_desc); + + /* send command */ + reinit_completion(&emac->cmd_complete); + ret = k3_udma_glue_push_tx_chn(tx_chn->tx_chn, first_desc, desc_dma); + if (ret) { + netdev_err(emac->ndev, "cmd %x: push failed: %d\n", cmd, ret); + goto free_desc; + } + ret = wait_for_completion_timeout(&emac->cmd_complete, msecs_to_jiffies(100)); + if (!ret) + netdev_err(emac->ndev, "cmd %x: completion timeout\n", cmd); + + mutex_unlock(&emac->cmd_lock); + + return ret; +free_desc: + prueth_xmit_free(tx_chn, first_desc); +err_unlock: + mutex_unlock(&emac->cmd_lock); + + return ret; +} + +static void icssg_config_set_speed_sr1(struct prueth_emac *emac) +{ + u32 cmd = ICSSG_PSTATE_SPEED_DUPLEX_CMD_SR1, val; + struct prueth *prueth = emac->prueth; + int slice = prueth_emac_slice(emac); + + val = icssg_rgmii_get_speed(prueth->miig_rt, slice); + /* firmware expects speed settings in bit 2-1 */ + val <<= 1; + cmd |= val; + + val = icssg_rgmii_get_fullduplex(prueth->miig_rt, slice); + /* firmware expects full duplex settings in bit 3 */ + val <<= 3; + cmd |= val; + + emac_send_command_sr1(emac, cmd); +} + +/* called back by PHY layer if there is change in link state of hw port*/ +static void emac_adjust_link_sr1(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct phy_device *phydev = ndev->phydev; + struct prueth *prueth = emac->prueth; + bool new_state = false; + unsigned long flags; + + if (phydev->link) { + /* check the mode of operation - full/half duplex */ + if (phydev->duplex != emac->duplex) { + new_state = true; + emac->duplex = phydev->duplex; + } + if (phydev->speed != emac->speed) { + new_state = true; + emac->speed = phydev->speed; + } + if (!emac->link) { + new_state = true; + emac->link = 1; + } + } else if (emac->link) { + new_state = true; + emac->link = 0; + + /* f/w should support 100 & 1000 */ + emac->speed = SPEED_1000; + + /* half duplex may not be supported by f/w */ + emac->duplex = DUPLEX_FULL; + } + + if (new_state) { + phy_print_status(phydev); + + /* update RGMII and MII configuration based on PHY negotiated + * values + */ + if (emac->link) { + /* Set the RGMII cfg for gig en and full duplex */ + icssg_update_rgmii_cfg(prueth->miig_rt, emac); + + /* update the Tx IPG based on 100M/1G speed */ + spin_lock_irqsave(&emac->lock, flags); + icssg_config_ipg(emac); + spin_unlock_irqrestore(&emac->lock, flags); + icssg_config_set_speed_sr1(emac); + } + } + + if (emac->link) { + /* reactivate the transmit queue */ + netif_tx_wake_all_queues(ndev); + } else { + netif_tx_stop_all_queues(ndev); + prueth_cleanup_tx_ts(emac); + } +} + +static int emac_phy_connect(struct prueth_emac *emac) +{ + struct prueth *prueth = emac->prueth; + struct net_device *ndev = emac->ndev; + /* connect PHY */ + ndev->phydev = of_phy_connect(emac->ndev, emac->phy_node, + &emac_adjust_link_sr1, 0, + emac->phy_if); + if (!ndev->phydev) { + dev_err(prueth->dev, "couldn't connect to phy %s\n", + emac->phy_node->full_name); + return -ENODEV; + } + + if (!emac->half_duplex) { + dev_dbg(prueth->dev, "half duplex mode is not supported\n"); + phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT); + } + + /* Remove 100Mbits half-duplex due to RGMII misreporting connection + * as full duplex */ + phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_100baseT_Half_BIT); + + /* remove unsupported modes */ + phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); + phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_Pause_BIT); + phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_Asym_Pause_BIT); + + if (emac->phy_if == PHY_INTERFACE_MODE_MII) + phy_set_max_speed(ndev->phydev, SPEED_100); + + return 0; +} + +/* get one packet from requested flow_id + * + * Returns skb pointer if packet found else NULL + * Caller must free the returned skb. + */ +static struct sk_buff *prueth_process_rx_mgm(struct prueth_emac *emac, + u32 flow_id) +{ + struct prueth_rx_chn *rx_chn = &emac->rx_mgm_chn; + struct net_device *ndev = emac->ndev; + struct cppi5_host_desc_t *desc_rx; + struct sk_buff *skb, *new_skb; + dma_addr_t desc_dma, buf_dma; + u32 buf_dma_len, pkt_len; + void **swdata; + int ret; + + ret = k3_udma_glue_pop_rx_chn(rx_chn->rx_chn, flow_id, &desc_dma); + if (ret) { + if (ret != -ENODATA) + netdev_err(ndev, "rx mgm pop: failed: %d\n", ret); + return NULL; + } + + if (cppi5_desc_is_tdcm(desc_dma)) /* Teardown */ + return NULL; + + desc_rx = k3_cppi_desc_pool_dma2virt(rx_chn->desc_pool, desc_dma); + + /* Fix FW bug about incorrect PSDATA size */ + if (cppi5_hdesc_get_psdata_size(desc_rx) != PRUETH_NAV_PS_DATA_SIZE) { + cppi5_hdesc_update_psdata_size(desc_rx, + PRUETH_NAV_PS_DATA_SIZE); + } + + swdata = cppi5_hdesc_get_swdata(desc_rx); + skb = *swdata; + cppi5_hdesc_get_obuf(desc_rx, &buf_dma, &buf_dma_len); + pkt_len = cppi5_hdesc_get_pktlen(desc_rx); + + dma_unmap_single(rx_chn->dma_dev, buf_dma, buf_dma_len, DMA_FROM_DEVICE); + k3_cppi_desc_pool_free(rx_chn->desc_pool, desc_rx); + + new_skb = netdev_alloc_skb_ip_align(ndev, PRUETH_MAX_PKT_SIZE); + /* if allocation fails we drop the packet but push the + * descriptor back to the ring with old skb to prevent a stall + */ + if (!new_skb) { + netdev_err(ndev, + "skb alloc failed, dropped mgm pkt from flow %d\n", + flow_id); + new_skb = skb; + skb = NULL; /* return NULL */ + } else { + /* return the filled skb */ + skb_put(skb, pkt_len); + } + + /* queue another DMA */ + ret = prueth_dma_rx_push(emac, new_skb, &emac->rx_mgm_chn); + if (WARN_ON(ret < 0)) + dev_kfree_skb_any(new_skb); + + return skb; +} + +static void prueth_tx_ts_sr1(struct prueth_emac *emac, + struct emac_tx_ts_response_sr1 *tsr) +{ + struct skb_shared_hwtstamps ssh; + u32 hi_ts, lo_ts, cookie; + struct sk_buff *skb; + u64 ns; + + hi_ts = le32_to_cpu(tsr->hi_ts); + lo_ts = le32_to_cpu(tsr->lo_ts); + + ns = (u64)hi_ts << 32 | lo_ts; + + cookie = le32_to_cpu(tsr->cookie); + if (cookie >= PRUETH_MAX_TX_TS_REQUESTS) { + netdev_dbg(emac->ndev, "Invalid TX TS cookie 0x%x\n", + cookie); + return; + } + + skb = emac->tx_ts_skb[cookie]; + emac->tx_ts_skb[cookie] = NULL; /* free slot */ + + memset(&ssh, 0, sizeof(ssh)); + ssh.hwtstamp = ns_to_ktime(ns); + + skb_tstamp_tx(skb, &ssh); + dev_consume_skb_any(skb); +} + +static irqreturn_t prueth_rx_mgm_ts_thread_sr1(int irq, void *dev_id) +{ + struct prueth_emac *emac = dev_id; + struct sk_buff *skb; + + skb = prueth_process_rx_mgm(emac, PRUETH_RX_MGM_FLOW_TIMESTAMP_SR1); + if (!skb) + return IRQ_NONE; + + prueth_tx_ts_sr1(emac, (void *)skb->data); + dev_kfree_skb_any(skb); + + return IRQ_HANDLED; +} + +static irqreturn_t prueth_rx_mgm_rsp_thread(int irq, void *dev_id) +{ + struct prueth_emac *emac = dev_id; + struct sk_buff *skb; + u32 rsp; + + skb = prueth_process_rx_mgm(emac, PRUETH_RX_MGM_FLOW_RESPONSE_SR1); + if (!skb) + return IRQ_NONE; + + /* Process command response */ + rsp = le32_to_cpu(*(__le32 *)skb->data) & 0xffff0000; + if (rsp == ICSSG_SHUTDOWN_CMD_SR1) { + netdev_dbg(emac->ndev, "f/w Shutdown cmd resp %x\n", rsp); + complete(&emac->cmd_complete); + } else if (rsp == ICSSG_PSTATE_SPEED_DUPLEX_CMD_SR1) { + netdev_dbg(emac->ndev, "f/w Speed/Duplex cmd rsp %x\n", rsp); + complete(&emac->cmd_complete); + } + + dev_kfree_skb_any(skb); + + return IRQ_HANDLED; +} + +static struct icssg_firmwares icssg_sr1_emac_firmwares[] = { + { + .pru = "ti-pruss/am65x-pru0-prueth-fw.elf", + .rtu = "ti-pruss/am65x-rtu0-prueth-fw.elf", + }, + { + .pru = "ti-pruss/am65x-pru1-prueth-fw.elf", + .rtu = "ti-pruss/am65x-rtu1-prueth-fw.elf", + } +}; + +static int prueth_emac_start(struct prueth *prueth, struct prueth_emac *emac) +{ + struct icssg_firmwares *firmwares; + struct device *dev = prueth->dev; + int slice, ret; + + firmwares = icssg_sr1_emac_firmwares; + + slice = prueth_emac_slice(emac); + if (slice < 0) { + netdev_err(emac->ndev, "invalid port\n"); + return -EINVAL; + } + + icssg_config_sr1(prueth, emac, slice); + + ret = rproc_set_firmware(prueth->pru[slice], firmwares[slice].pru); + ret = rproc_boot(prueth->pru[slice]); + if (ret) { + dev_err(dev, "failed to boot PRU%d: %d\n", slice, ret); + return -EINVAL; + } + + ret = rproc_set_firmware(prueth->rtu[slice], firmwares[slice].rtu); + ret = rproc_boot(prueth->rtu[slice]); + if (ret) { + dev_err(dev, "failed to boot RTU%d: %d\n", slice, ret); + goto halt_pru; + } + + return 0; + +halt_pru: + rproc_shutdown(prueth->pru[slice]); + + return ret; +} + +static void prueth_emac_stop(struct prueth_emac *emac) +{ + struct prueth *prueth = emac->prueth; + int slice; + + switch (emac->port_id) { + case PRUETH_PORT_MII0: + slice = ICSS_SLICE0; + break; + case PRUETH_PORT_MII1: + slice = ICSS_SLICE1; + break; + default: + netdev_err(emac->ndev, "invalid port\n"); + return; + } + + if (!emac->is_sr1) + rproc_shutdown(prueth->txpru[slice]); + rproc_shutdown(prueth->rtu[slice]); + rproc_shutdown(prueth->pru[slice]); +} + +/** + * emac_ndo_open - EMAC device open + * @ndev: network adapter device + * + * Called when system wants to start the interface. + * + * Return: 0 for a successful open, or appropriate error code + */ +static int emac_ndo_open(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + int num_data_chn = emac->tx_ch_num - 1; + struct prueth *prueth = emac->prueth; + int slice = prueth_emac_slice(emac); + struct device *dev = prueth->dev; + int max_rx_flows, rx_flow; + int ret, i; + + /* clear SMEM and MSMC settings for all slices */ + if (!prueth->emacs_initialized) { + memset_io(prueth->msmcram.va, 0, prueth->msmcram.size); + memset_io(prueth->shram.va, 0, ICSSG_CONFIG_OFFSET_SLICE1 * PRUETH_NUM_MACS); + } + + /* set h/w MAC as user might have re-configured */ + ether_addr_copy(emac->mac_addr, ndev->dev_addr); + + icssg_class_set_mac_addr(prueth->miig_rt, slice, emac->mac_addr); + + icssg_class_default(prueth->miig_rt, slice, 0, true); + + /* Notify the stack of the actual queue counts. */ + ret = netif_set_real_num_tx_queues(ndev, num_data_chn); + if (ret) { + dev_err(dev, "cannot set real number of tx queues\n"); + return ret; + } + + init_completion(&emac->cmd_complete); + ret = prueth_init_tx_chns(emac); + if (ret) { + dev_err(dev, "failed to init tx channel: %d\n", ret); + return ret; + } + + max_rx_flows = PRUETH_MAX_RX_FLOWS_SR1; + ret = prueth_init_rx_chns(emac, &emac->rx_chns, "rx", + max_rx_flows, PRUETH_MAX_RX_DESC); + if (ret) { + dev_err(dev, "failed to init rx channel: %d\n", ret); + goto cleanup_tx; + } + + ret = prueth_init_rx_chns(emac, &emac->rx_mgm_chn, "rxmgm", + PRUETH_MAX_RX_MGM_FLOWS_SR1, + PRUETH_MAX_RX_MGM_DESC_SR1); + if (ret) { + dev_err(dev, "failed to init rx mgmt channel: %d\n", + ret); + goto cleanup_rx; + } + + ret = prueth_ndev_add_tx_napi(emac); + if (ret) + goto cleanup_rx_mgm; + + /* we use only the highest priority flow for now i.e. @irq[3] */ + rx_flow = PRUETH_RX_FLOW_DATA_SR1; + ret = request_irq(emac->rx_chns.irq[rx_flow], prueth_rx_irq, + IRQF_TRIGGER_HIGH, dev_name(dev), emac); + if (ret) { + dev_err(dev, "unable to request RX IRQ\n"); + goto cleanup_napi; + } + + ret = request_threaded_irq(emac->rx_mgm_chn.irq[PRUETH_RX_MGM_FLOW_RESPONSE_SR1], + NULL, prueth_rx_mgm_rsp_thread, + IRQF_ONESHOT | IRQF_TRIGGER_HIGH, + dev_name(dev), emac); + if (ret) { + dev_err(dev, "unable to request RX Management RSP IRQ\n"); + goto free_rx_irq; + } + + ret = request_threaded_irq(emac->rx_mgm_chn.irq[PRUETH_RX_MGM_FLOW_TIMESTAMP_SR1], + NULL, prueth_rx_mgm_ts_thread_sr1, + IRQF_ONESHOT | IRQF_TRIGGER_HIGH, + dev_name(dev), emac); + if (ret) { + dev_err(dev, "unable to request RX Management TS IRQ\n"); + goto free_rx_mgm_rsp_irq; + } + + /* reset and start PRU firmware */ + ret = prueth_emac_start(prueth, emac); + if (ret) + goto free_rx_mgmt_ts_irq; + + icssg_mii_update_mtu(prueth->mii_rt, slice, ndev->max_mtu); + + /* Prepare RX */ + ret = prueth_prepare_rx_chan(emac, &emac->rx_chns, PRUETH_MAX_PKT_SIZE); + if (ret) + goto stop; + + ret = prueth_prepare_rx_chan(emac, &emac->rx_mgm_chn, 64); + if (ret) + goto reset_rx_chn; + + ret = k3_udma_glue_enable_rx_chn(emac->rx_mgm_chn.rx_chn); + if (ret) + goto reset_rx_chn; + + ret = k3_udma_glue_enable_rx_chn(emac->rx_chns.rx_chn); + if (ret) + goto reset_rx_mgm_chn; + + for (i = 0; i < emac->tx_ch_num; i++) { + ret = k3_udma_glue_enable_tx_chn(emac->tx_chns[i].tx_chn); + if (ret) + goto reset_tx_chan; + } + + /* Enable NAPI in Tx and Rx direction */ + for (i = 0; i < emac->tx_ch_num; i++) + napi_enable(&emac->tx_chns[i].napi_tx); + napi_enable(&emac->napi_rx); + + /* start PHY */ + phy_start(ndev->phydev); + + prueth->emacs_initialized++; + + queue_work(system_long_wq, &emac->stats_work.work); + + return 0; + +reset_tx_chan: + /* Since interface is not yet up, there is wouldn't be + * any SKB for completion. So set false to free_skb + */ + prueth_reset_tx_chan(emac, i, false); +reset_rx_mgm_chn: + prueth_reset_rx_chan(&emac->rx_mgm_chn, + PRUETH_MAX_RX_MGM_FLOWS_SR1, true); +reset_rx_chn: + prueth_reset_rx_chan(&emac->rx_chns, max_rx_flows, false); +stop: + prueth_emac_stop(emac); +free_rx_mgmt_ts_irq: + free_irq(emac->rx_mgm_chn.irq[PRUETH_RX_MGM_FLOW_TIMESTAMP_SR1], + emac); +free_rx_mgm_rsp_irq: + free_irq(emac->rx_mgm_chn.irq[PRUETH_RX_MGM_FLOW_RESPONSE_SR1], + emac); +free_rx_irq: + free_irq(emac->rx_chns.irq[rx_flow], emac); +cleanup_napi: + prueth_ndev_del_tx_napi(emac, emac->tx_ch_num); +cleanup_rx_mgm: + prueth_cleanup_rx_chns(emac, &emac->rx_mgm_chn, + PRUETH_MAX_RX_MGM_FLOWS_SR1); +cleanup_rx: + prueth_cleanup_rx_chns(emac, &emac->rx_chns, max_rx_flows); +cleanup_tx: + prueth_cleanup_tx_chns(emac); + + return ret; +} + +/** + * emac_ndo_stop - EMAC device stop + * @ndev: network adapter device + * + * Called when system wants to stop or down the interface. + * + * Return: Always 0 (Success) + */ +static int emac_ndo_stop(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + int rx_flow = PRUETH_RX_FLOW_DATA_SR1; + struct prueth *prueth = emac->prueth; + int max_rx_flows; + int ret, i; + + /* inform the upper layers. */ + netif_tx_stop_all_queues(ndev); + + /* block packets from wire */ + if (ndev->phydev) + phy_stop(ndev->phydev); + + icssg_class_disable(prueth->miig_rt, prueth_emac_slice(emac)); + + emac_send_command_sr1(emac, ICSSG_SHUTDOWN_CMD_SR1); + + atomic_set(&emac->tdown_cnt, emac->tx_ch_num); + /* ensure new tdown_cnt value is visible */ + smp_mb__after_atomic(); + /* tear down and disable UDMA channels */ + reinit_completion(&emac->tdown_complete); + for (i = 0; i < emac->tx_ch_num; i++) + k3_udma_glue_tdown_tx_chn(emac->tx_chns[i].tx_chn, false); + + ret = wait_for_completion_timeout(&emac->tdown_complete, + msecs_to_jiffies(1000)); + if (!ret) + netdev_err(ndev, "tx teardown timeout\n"); + + prueth_reset_tx_chan(emac, emac->tx_ch_num, true); + for (i = 0; i < emac->tx_ch_num; i++) + napi_disable(&emac->tx_chns[i].napi_tx); + + max_rx_flows = PRUETH_MAX_RX_FLOWS_SR1; + k3_udma_glue_tdown_rx_chn(emac->rx_chns.rx_chn, true); + + prueth_reset_rx_chan(&emac->rx_chns, max_rx_flows, true); + /* Teardown RX MGM channel */ + k3_udma_glue_tdown_rx_chn(emac->rx_mgm_chn.rx_chn, true); + prueth_reset_rx_chan(&emac->rx_mgm_chn, + PRUETH_MAX_RX_MGM_FLOWS_SR1, true); + + napi_disable(&emac->napi_rx); + + /* Destroying the queued work in ndo_stop() */ + cancel_delayed_work_sync(&emac->stats_work); + + /* stop PRUs */ + prueth_emac_stop(emac); + + free_irq(emac->rx_mgm_chn.irq[PRUETH_RX_MGM_FLOW_TIMESTAMP_SR1], emac); + free_irq(emac->rx_mgm_chn.irq[PRUETH_RX_MGM_FLOW_RESPONSE_SR1], emac); + free_irq(emac->rx_chns.irq[rx_flow], emac); + prueth_ndev_del_tx_napi(emac, emac->tx_ch_num); + prueth_cleanup_tx_chns(emac); + + prueth_cleanup_rx_chns(emac, &emac->rx_mgm_chn, PRUETH_MAX_RX_MGM_FLOWS_SR1); + prueth_cleanup_rx_chns(emac, &emac->rx_chns, max_rx_flows); + + prueth->emacs_initialized--; + + return 0; +} + +static void emac_ndo_set_rx_mode_sr1(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + bool allmulti = ndev->flags & IFF_ALLMULTI; + bool promisc = ndev->flags & IFF_PROMISC; + struct prueth *prueth = emac->prueth; + int slice = prueth_emac_slice(emac); + + if (promisc) { + icssg_class_promiscuous_sr1(prueth->miig_rt, slice); + return; + } + + if (allmulti) { + icssg_class_default(prueth->miig_rt, slice, 1, true); + return; + } + + icssg_class_default(prueth->miig_rt, slice, 0, true); + if (!netdev_mc_empty(ndev)) { + /* program multicast address list into Classifier */ + icssg_class_add_mcast_sr1(prueth->miig_rt, slice, ndev); + } +} + +static const struct net_device_ops emac_netdev_ops = { + .ndo_open = emac_ndo_open, + .ndo_stop = emac_ndo_stop, + .ndo_start_xmit = icssg_ndo_start_xmit, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, + .ndo_tx_timeout = icssg_ndo_tx_timeout, + .ndo_set_rx_mode = emac_ndo_set_rx_mode_sr1, + .ndo_eth_ioctl = icssg_ndo_ioctl, + .ndo_get_stats64 = icssg_ndo_get_stats64, + .ndo_get_phys_port_name = icssg_ndo_get_phys_port_name, +}; + +static int prueth_netdev_init(struct prueth *prueth, + struct device_node *eth_node) +{ + struct prueth_emac *emac; + struct net_device *ndev; + enum prueth_port port; + enum prueth_mac mac; + /* Only enable one TX channel due to timeouts when + * using multiple channels */ + int num_tx_chn = 1; + int ret; + + port = prueth_node_port(eth_node); + if (port == PRUETH_PORT_INVALID) + return -EINVAL; + + mac = prueth_node_mac(eth_node); + if (mac == PRUETH_MAC_INVALID) + return -EINVAL; + + ndev = alloc_etherdev_mq(sizeof(*emac), num_tx_chn); + if (!ndev) + return -ENOMEM; + + emac = netdev_priv(ndev); + emac->is_sr1 = 1; + emac->prueth = prueth; + emac->ndev = ndev; + emac->port_id = port; + emac->cmd_wq = create_singlethread_workqueue("icssg_cmd_wq"); + if (!emac->cmd_wq) { + ret = -ENOMEM; + goto free_ndev; + } + + INIT_DELAYED_WORK(&emac->stats_work, icssg_stats_work_handler); + + ret = pruss_request_mem_region(prueth->pruss, + port == PRUETH_PORT_MII0 ? + PRUSS_MEM_DRAM0 : PRUSS_MEM_DRAM1, + &emac->dram); + if (ret) { + dev_err(prueth->dev, "unable to get DRAM: %d\n", ret); + ret = -ENOMEM; + goto free_wq; + } + + /* SR1.0 uses a dedicated high priority channel + * to send commands to the firmware + */ + emac->tx_ch_num = 2; + + SET_NETDEV_DEV(ndev, prueth->dev); + spin_lock_init(&emac->lock); + mutex_init(&emac->cmd_lock); + + emac->phy_node = of_parse_phandle(eth_node, "phy-handle", 0); + if (!emac->phy_node && !of_phy_is_fixed_link(eth_node)) { + dev_err(prueth->dev, "couldn't find phy-handle\n"); + ret = -ENODEV; + goto free; + } else if (of_phy_is_fixed_link(eth_node)) { + ret = of_phy_register_fixed_link(eth_node); + if (ret) { + ret = dev_err_probe(prueth->dev, ret, + "failed to register fixed-link phy\n"); + goto free; + } + + emac->phy_node = eth_node; + } + + ret = of_get_phy_mode(eth_node, &emac->phy_if); + if (ret) { + dev_err(prueth->dev, "could not get phy-mode property\n"); + goto free; + } + + if (emac->phy_if != PHY_INTERFACE_MODE_MII && + !phy_interface_mode_is_rgmii(emac->phy_if)) { + dev_err(prueth->dev, "PHY mode unsupported %s\n", phy_modes(emac->phy_if)); + ret = -EINVAL; + goto free; + } + + /* AM65 SR2.0 has TX Internal delay always enabled by hardware + * and it is not possible to disable TX Internal delay. The below + * switch case block describes how we handle different phy modes + * based on hardware restriction. + */ + switch (emac->phy_if) { + case PHY_INTERFACE_MODE_RGMII_ID: + emac->phy_if = PHY_INTERFACE_MODE_RGMII_RXID; + break; + case PHY_INTERFACE_MODE_RGMII_TXID: + emac->phy_if = PHY_INTERFACE_MODE_RGMII; + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_RXID: + dev_err(prueth->dev, "RGMII mode without TX delay is not supported"); + ret = -EINVAL; + goto free; + default: + break; + } + + /* get mac address from DT and set private and netdev addr */ + ret = of_get_ethdev_address(eth_node, ndev); + if (!is_valid_ether_addr(ndev->dev_addr)) { + eth_hw_addr_random(ndev); + dev_warn(prueth->dev, "port %d: using random MAC addr: %pM\n", + port, ndev->dev_addr); + } + ether_addr_copy(emac->mac_addr, ndev->dev_addr); + + ndev->dev.of_node = eth_node; + ndev->min_mtu = PRUETH_MIN_PKT_SIZE; + ndev->max_mtu = PRUETH_MAX_MTU; + ndev->netdev_ops = &emac_netdev_ops; + ndev->ethtool_ops = &icssg_ethtool_ops; + ndev->hw_features = NETIF_F_SG; + ndev->features = ndev->hw_features; + + netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll); + prueth->emac[mac] = emac; + + return 0; + +free: + pruss_release_mem_region(prueth->pruss, &emac->dram); +free_wq: + destroy_workqueue(emac->cmd_wq); +free_ndev: + emac->ndev = NULL; + prueth->emac[mac] = NULL; + free_netdev(ndev); + + return ret; +} + +static int prueth_probe(struct platform_device *pdev) +{ + struct device_node *eth_node, *eth_ports_node; + struct device_node *eth0_node = NULL; + struct device_node *eth1_node = NULL; + struct device *dev = &pdev->dev; + struct device_node *np; + struct prueth *prueth; + struct pruss *pruss; + u32 msmc_ram_size; + int i, ret; + + np = dev->of_node; + + prueth = devm_kzalloc(dev, sizeof(*prueth), GFP_KERNEL); + if (!prueth) + return -ENOMEM; + + dev_set_drvdata(dev, prueth); + prueth->pdev = pdev; + prueth->pdata = *(const struct prueth_pdata *)device_get_match_data(dev); + + prueth->dev = dev; + eth_ports_node = of_get_child_by_name(np, "ethernet-ports"); + if (!eth_ports_node) + return -ENOENT; + + for_each_child_of_node(eth_ports_node, eth_node) { + u32 reg; + + if (strcmp(eth_node->name, "port")) + continue; + ret = of_property_read_u32(eth_node, "reg", ®); + if (ret < 0) { + dev_err(dev, "%pOF error reading port_id %d\n", + eth_node, ret); + } + + of_node_get(eth_node); + + if (reg == 0) { + eth0_node = eth_node; + if (!of_device_is_available(eth0_node)) { + of_node_put(eth0_node); + eth0_node = NULL; + } + } else if (reg == 1) { + eth1_node = eth_node; + if (!of_device_is_available(eth1_node)) { + of_node_put(eth1_node); + eth1_node = NULL; + } + } else { + dev_err(dev, "port reg should be 0 or 1\n"); + } + } + + of_node_put(eth_ports_node); + + /* At least one node must be present and available else we fail */ + if (!eth0_node && !eth1_node) { + dev_err(dev, "neither port0 nor port1 node available\n"); + return -ENODEV; + } + + if (eth0_node == eth1_node) { + dev_err(dev, "port0 and port1 can't have same reg\n"); + of_node_put(eth0_node); + return -ENODEV; + } + + prueth->eth_node[PRUETH_MAC0] = eth0_node; + prueth->eth_node[PRUETH_MAC1] = eth1_node; + + prueth->miig_rt = syscon_regmap_lookup_by_phandle(np, "ti,mii-g-rt"); + if (IS_ERR(prueth->miig_rt)) { + dev_err(dev, "couldn't get ti,mii-g-rt syscon regmap\n"); + return -ENODEV; + } + + prueth->mii_rt = syscon_regmap_lookup_by_phandle(np, "ti,mii-rt"); + if (IS_ERR(prueth->mii_rt)) { + dev_err(dev, "couldn't get ti,mii-rt syscon regmap\n"); + return -ENODEV; + } + + if (eth0_node) { + ret = prueth_get_cores(prueth, ICSS_SLICE0, true); + if (ret) + goto put_cores; + } + + if (eth1_node) { + ret = prueth_get_cores(prueth, ICSS_SLICE1, true); + if (ret) + goto put_cores; + } + + pruss = pruss_get(eth0_node ? + prueth->pru[ICSS_SLICE0] : prueth->pru[ICSS_SLICE1]); + if (IS_ERR(pruss)) { + ret = PTR_ERR(pruss); + dev_err(dev, "unable to get pruss handle\n"); + goto put_cores; + } + + prueth->pruss = pruss; + + ret = pruss_request_mem_region(pruss, PRUSS_MEM_SHRD_RAM2, + &prueth->shram); + if (ret) { + dev_err(dev, "unable to get PRUSS SHRD RAM2: %d\n", ret); + goto put_pruss; + } + + prueth->sram_pool = of_gen_pool_get(np, "sram", 0); + if (!prueth->sram_pool) { + dev_err(dev, "unable to get SRAM pool\n"); + ret = -ENODEV; + + goto put_mem; + } + + msmc_ram_size = MSMC_RAM_SIZE_SR1; + + prueth->msmcram.va = (void __iomem *)gen_pool_alloc(prueth->sram_pool, + msmc_ram_size); + + if (!prueth->msmcram.va) { + ret = -ENOMEM; + dev_err(dev, "unable to allocate MSMC resource\n"); + goto put_mem; + } + prueth->msmcram.pa = gen_pool_virt_to_phys(prueth->sram_pool, + (unsigned long)prueth->msmcram.va); + prueth->msmcram.size = msmc_ram_size; + memset_io(prueth->msmcram.va, 0, msmc_ram_size); + + prueth->iep0 = icss_iep_get_idx(np, 0); + if (IS_ERR(prueth->iep0)) { + ret = dev_err_probe(dev, PTR_ERR(prueth->iep0), + "iep0 get failed\n"); + goto free_pool; + } + + prueth->iep1 = icss_iep_get_idx(np, 1); + if (IS_ERR(prueth->iep1)) { + ret = dev_err_probe(dev, PTR_ERR(prueth->iep1), + "iep1 get failed\n"); + goto put_iep0; + } + + ret = icss_iep_init(prueth->iep0, NULL, NULL, 0); + if (ret) { + dev_err_probe(dev, ret, "failed to init iep0\n"); + goto put_iep; + } + + ret = icss_iep_init(prueth->iep1, NULL, NULL, 0); + if (ret) { + dev_err_probe(dev, ret, "failed to init iep1\n"); + goto exit_iep0; + } + + if (eth0_node) { + ret = prueth_netdev_init(prueth, eth0_node); + if (ret) { + dev_err_probe(dev, ret, "netdev init %s failed\n", + eth0_node->name); + goto exit_iep; + } + + prueth->emac[PRUETH_MAC0]->half_duplex = + of_property_read_bool(eth0_node, "ti,half-duplex-capable"); + + prueth->emac[PRUETH_MAC0]->iep = prueth->iep0; + } + + if (eth1_node) { + ret = prueth_netdev_init(prueth, eth1_node); + if (ret) { + dev_err_probe(dev, ret, "netdev init %s failed\n", + eth1_node->name); + goto netdev_exit; + } + + prueth->emac[PRUETH_MAC1]->half_duplex = + of_property_read_bool(eth1_node, "ti,half-duplex-capable"); + + prueth->emac[PRUETH_MAC1]->iep = prueth->iep1; + } + + /* register the network devices */ + if (eth0_node) { + ret = register_netdev(prueth->emac[PRUETH_MAC0]->ndev); + if (ret) { + dev_err(dev, "can't register netdev for port MII0\n"); + goto netdev_exit; + } + + prueth->registered_netdevs[PRUETH_MAC0] = prueth->emac[PRUETH_MAC0]->ndev; + emac_phy_connect(prueth->emac[PRUETH_MAC0]); + phy_attached_info(prueth->emac[PRUETH_MAC0]->ndev->phydev); + } + + if (eth1_node) { + ret = register_netdev(prueth->emac[PRUETH_MAC1]->ndev); + if (ret) { + dev_err(dev, "can't register netdev for port MII1\n"); + goto netdev_unregister; + } + + prueth->registered_netdevs[PRUETH_MAC1] = prueth->emac[PRUETH_MAC1]->ndev; + emac_phy_connect(prueth->emac[PRUETH_MAC1]); + phy_attached_info(prueth->emac[PRUETH_MAC1]->ndev->phydev); + } + + dev_info(dev, "TI PRU SR1.0 ethernet driver initialized: %s EMAC mode\n", + (!eth0_node || !eth1_node) ? "single" : "dual"); + + if (eth1_node) + of_node_put(eth1_node); + if (eth0_node) + of_node_put(eth0_node); + + return 0; + +netdev_unregister: + for (i = 0; i < PRUETH_NUM_MACS; i++) { + if (!prueth->registered_netdevs[i]) + continue; + + if (prueth->emac[i]->ndev->phydev) { + phy_disconnect(prueth->emac[i]->ndev->phydev); + prueth->emac[i]->ndev->phydev = NULL; + } + unregister_netdev(prueth->registered_netdevs[i]); + } + +netdev_exit: + for (i = 0; i < PRUETH_NUM_MACS; i++) { + eth_node = prueth->eth_node[i]; + if (!eth_node) + continue; + + prueth_netdev_exit(prueth, eth_node); + } + +exit_iep: + icss_iep_exit(prueth->iep1); +exit_iep0: + icss_iep_exit(prueth->iep0); + +put_iep: + icss_iep_put(prueth->iep1); + +put_iep0: + icss_iep_put(prueth->iep0); + prueth->iep0 = NULL; + prueth->iep1 = NULL; + +free_pool: + gen_pool_free(prueth->sram_pool, + (unsigned long)prueth->msmcram.va, msmc_ram_size); + +put_mem: + pruss_release_mem_region(prueth->pruss, &prueth->shram); + +put_pruss: + pruss_put(prueth->pruss); + +put_cores: + if (eth1_node) { + prueth_put_cores(prueth, ICSS_SLICE1); + of_node_put(eth1_node); + } + + if (eth0_node) { + prueth_put_cores(prueth, ICSS_SLICE0); + of_node_put(eth0_node); + } + + return ret; +} + +static void prueth_remove(struct platform_device *pdev) +{ + struct prueth *prueth = platform_get_drvdata(pdev); + struct device_node *eth_node; + int i; + + for (i = 0; i < PRUETH_NUM_MACS; i++) { + if (!prueth->registered_netdevs[i]) + continue; + phy_stop(prueth->emac[i]->ndev->phydev); + phy_disconnect(prueth->emac[i]->ndev->phydev); + prueth->emac[i]->ndev->phydev = NULL; + unregister_netdev(prueth->registered_netdevs[i]); + } + + for (i = 0; i < PRUETH_NUM_MACS; i++) { + eth_node = prueth->eth_node[i]; + if (!eth_node) + continue; + + prueth_netdev_exit(prueth, eth_node); + } + + icss_iep_exit(prueth->iep1); + icss_iep_exit(prueth->iep0); + + icss_iep_put(prueth->iep1); + icss_iep_put(prueth->iep0); + + gen_pool_free(prueth->sram_pool, + (unsigned long)prueth->msmcram.va, + MSMC_RAM_SIZE_SR1); + + pruss_release_mem_region(prueth->pruss, &prueth->shram); + + pruss_put(prueth->pruss); + + if (prueth->eth_node[PRUETH_MAC1]) + prueth_put_cores(prueth, ICSS_SLICE1); + + if (prueth->eth_node[PRUETH_MAC0]) + prueth_put_cores(prueth, ICSS_SLICE0); +} + +static const struct prueth_pdata am654_sr1_icssg_pdata = { + .fdqring_mode = K3_RINGACC_RING_MODE_MESSAGE, +}; + +static const struct of_device_id prueth_dt_match[] = { + { .compatible = "ti,am654-sr1-icssg-prueth", .data = &am654_sr1_icssg_pdata }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, prueth_dt_match); + +static struct platform_driver prueth_driver = { + .probe = prueth_probe, + .remove = prueth_remove, + .driver = { + .name = "icssg-prueth-sr1", + .of_match_table = prueth_dt_match, + .pm = &prueth_dev_pm_ops, + }, +}; +module_platform_driver(prueth_driver); + +MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>"); +MODULE_AUTHOR("Md Danish Anwar <danishanwar@ti.com>"); +MODULE_AUTHOR("Diogo Ivo <diogo.ivo@siemens.com>"); +MODULE_DESCRIPTION(PRUETH_MODULE_DESCRIPTION); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/ti/icssg/icssg_queues.c b/drivers/net/ethernet/ti/icssg/icssg_queues.c index 3c34f61ad40b..e5052d9e7807 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_queues.c +++ b/drivers/net/ethernet/ti/icssg/icssg_queues.c @@ -28,6 +28,7 @@ int icssg_queue_pop(struct prueth *prueth, u8 queue) return val; } +EXPORT_SYMBOL_GPL(icssg_queue_pop); void icssg_queue_push(struct prueth *prueth, int queue, u16 addr) { @@ -36,6 +37,7 @@ void icssg_queue_push(struct prueth *prueth, int queue, u16 addr) regmap_write(prueth->miig_rt, ICSSG_QUEUE_OFFSET + 4 * queue, addr); } +EXPORT_SYMBOL_GPL(icssg_queue_push); u32 icssg_queue_level(struct prueth *prueth, int queue) { diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.c b/drivers/net/ethernet/ti/icssg/icssg_stats.c index 3dbadddd7e35..6f0edae38ea2 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.c +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.c @@ -11,6 +11,7 @@ #define ICSSG_TX_PACKET_OFFSET 0xA0 #define ICSSG_TX_BYTE_OFFSET 0xEC +#define ICSSG_FW_STATS_BASE 0x0248 static u32 stats_base[] = { 0x54c, /* Slice 0 stats start */ 0xb18, /* Slice 1 stats start */ @@ -22,27 +23,41 @@ void emac_update_hardware_stats(struct prueth_emac *emac) int slice = prueth_emac_slice(emac); u32 base = stats_base[slice]; u32 tx_pkt_cnt = 0; - u32 val; + u32 val, reg; int i; - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) { + spin_lock(&prueth->stats_lock); + + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) { regmap_read(prueth->miig_rt, - base + icssg_all_stats[i].offset, + base + icssg_all_miig_stats[i].offset, &val); regmap_write(prueth->miig_rt, - base + icssg_all_stats[i].offset, + base + icssg_all_miig_stats[i].offset, val); - if (icssg_all_stats[i].offset == ICSSG_TX_PACKET_OFFSET) + if (icssg_all_miig_stats[i].offset == ICSSG_TX_PACKET_OFFSET) tx_pkt_cnt = val; emac->stats[i] += val; - if (icssg_all_stats[i].offset == ICSSG_TX_BYTE_OFFSET) + if (icssg_all_miig_stats[i].offset == ICSSG_TX_BYTE_OFFSET) emac->stats[i] -= tx_pkt_cnt * 8; } + + if (prueth->pa_stats) { + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) { + reg = ICSSG_FW_STATS_BASE + + icssg_all_pa_stats[i].offset * + PRUETH_NUM_MACS + slice * sizeof(u32); + regmap_read(prueth->pa_stats, reg, &val); + emac->pa_stats[i] += val; + } + } + + spin_unlock(&prueth->stats_lock); } -void emac_stats_work_handler(struct work_struct *work) +void icssg_stats_work_handler(struct work_struct *work) { struct prueth_emac *emac = container_of(work, struct prueth_emac, stats_work.work); @@ -51,14 +66,22 @@ void emac_stats_work_handler(struct work_struct *work) queue_delayed_work(system_long_wq, &emac->stats_work, msecs_to_jiffies((STATS_TIME_LIMIT_1G_MS * 1000) / emac->speed)); } +EXPORT_SYMBOL_GPL(icssg_stats_work_handler); int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name) { int i; - for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) { - if (!strcmp(icssg_all_stats[i].name, stat_name)) - return emac->stats[icssg_all_stats[i].offset / sizeof(u32)]; + for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) { + if (!strcmp(icssg_all_miig_stats[i].name, stat_name)) + return emac->stats[icssg_all_miig_stats[i].offset / sizeof(u32)]; + } + + if (emac->prueth->pa_stats) { + for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) { + if (!strcmp(icssg_all_pa_stats[i].name, stat_name)) + return emac->pa_stats[icssg_all_pa_stats[i].offset / sizeof(u32)]; + } } netdev_err(emac->ndev, "Invalid stats %s\n", stat_name); diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.h b/drivers/net/ethernet/ti/icssg/icssg_stats.h index 999a4a91276c..e88b919f532c 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.h +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.h @@ -77,82 +77,114 @@ struct miig_stats_regs { u32 tx_bytes; }; -#define ICSSG_STATS(field, stats_type) \ +#define ICSSG_MIIG_STATS(field, stats_type) \ { \ #field, \ offsetof(struct miig_stats_regs, field), \ stats_type \ } -struct icssg_stats { +struct icssg_miig_stats { char name[ETH_GSTRING_LEN]; u32 offset; bool standard_stats; }; -static const struct icssg_stats icssg_all_stats[] = { +static const struct icssg_miig_stats icssg_all_miig_stats[] = { /* Rx */ - ICSSG_STATS(rx_packets, true), - ICSSG_STATS(rx_broadcast_frames, false), - ICSSG_STATS(rx_multicast_frames, true), - ICSSG_STATS(rx_crc_errors, true), - ICSSG_STATS(rx_mii_error_frames, false), - ICSSG_STATS(rx_odd_nibble_frames, false), - ICSSG_STATS(rx_frame_max_size, true), - ICSSG_STATS(rx_max_size_error_frames, false), - ICSSG_STATS(rx_frame_min_size, true), - ICSSG_STATS(rx_min_size_error_frames, false), - ICSSG_STATS(rx_over_errors, true), - ICSSG_STATS(rx_class0_hits, false), - ICSSG_STATS(rx_class1_hits, false), - ICSSG_STATS(rx_class2_hits, false), - ICSSG_STATS(rx_class3_hits, false), - ICSSG_STATS(rx_class4_hits, false), - ICSSG_STATS(rx_class5_hits, false), - ICSSG_STATS(rx_class6_hits, false), - ICSSG_STATS(rx_class7_hits, false), - ICSSG_STATS(rx_class8_hits, false), - ICSSG_STATS(rx_class9_hits, false), - ICSSG_STATS(rx_class10_hits, false), - ICSSG_STATS(rx_class11_hits, false), - ICSSG_STATS(rx_class12_hits, false), - ICSSG_STATS(rx_class13_hits, false), - ICSSG_STATS(rx_class14_hits, false), - ICSSG_STATS(rx_class15_hits, false), - ICSSG_STATS(rx_smd_frags, false), - ICSSG_STATS(rx_bucket1_size, true), - ICSSG_STATS(rx_bucket2_size, true), - ICSSG_STATS(rx_bucket3_size, true), - ICSSG_STATS(rx_bucket4_size, true), - ICSSG_STATS(rx_64B_frames, true), - ICSSG_STATS(rx_bucket1_frames, true), - ICSSG_STATS(rx_bucket2_frames, true), - ICSSG_STATS(rx_bucket3_frames, true), - ICSSG_STATS(rx_bucket4_frames, true), - ICSSG_STATS(rx_bucket5_frames, true), - ICSSG_STATS(rx_bytes, true), - ICSSG_STATS(rx_tx_total_bytes, false), + ICSSG_MIIG_STATS(rx_packets, true), + ICSSG_MIIG_STATS(rx_broadcast_frames, false), + ICSSG_MIIG_STATS(rx_multicast_frames, true), + ICSSG_MIIG_STATS(rx_crc_errors, true), + ICSSG_MIIG_STATS(rx_mii_error_frames, false), + ICSSG_MIIG_STATS(rx_odd_nibble_frames, false), + ICSSG_MIIG_STATS(rx_frame_max_size, true), + ICSSG_MIIG_STATS(rx_max_size_error_frames, false), + ICSSG_MIIG_STATS(rx_frame_min_size, true), + ICSSG_MIIG_STATS(rx_min_size_error_frames, false), + ICSSG_MIIG_STATS(rx_over_errors, true), + ICSSG_MIIG_STATS(rx_class0_hits, false), + ICSSG_MIIG_STATS(rx_class1_hits, false), + ICSSG_MIIG_STATS(rx_class2_hits, false), + ICSSG_MIIG_STATS(rx_class3_hits, false), + ICSSG_MIIG_STATS(rx_class4_hits, false), + ICSSG_MIIG_STATS(rx_class5_hits, false), + ICSSG_MIIG_STATS(rx_class6_hits, false), + ICSSG_MIIG_STATS(rx_class7_hits, false), + ICSSG_MIIG_STATS(rx_class8_hits, false), + ICSSG_MIIG_STATS(rx_class9_hits, false), + ICSSG_MIIG_STATS(rx_class10_hits, false), + ICSSG_MIIG_STATS(rx_class11_hits, false), + ICSSG_MIIG_STATS(rx_class12_hits, false), + ICSSG_MIIG_STATS(rx_class13_hits, false), + ICSSG_MIIG_STATS(rx_class14_hits, false), + ICSSG_MIIG_STATS(rx_class15_hits, false), + ICSSG_MIIG_STATS(rx_smd_frags, false), + ICSSG_MIIG_STATS(rx_bucket1_size, true), + ICSSG_MIIG_STATS(rx_bucket2_size, true), + ICSSG_MIIG_STATS(rx_bucket3_size, true), + ICSSG_MIIG_STATS(rx_bucket4_size, true), + ICSSG_MIIG_STATS(rx_64B_frames, true), + ICSSG_MIIG_STATS(rx_bucket1_frames, true), + ICSSG_MIIG_STATS(rx_bucket2_frames, true), + ICSSG_MIIG_STATS(rx_bucket3_frames, true), + ICSSG_MIIG_STATS(rx_bucket4_frames, true), + ICSSG_MIIG_STATS(rx_bucket5_frames, true), + ICSSG_MIIG_STATS(rx_bytes, true), + ICSSG_MIIG_STATS(rx_tx_total_bytes, false), /* Tx */ - ICSSG_STATS(tx_packets, true), - ICSSG_STATS(tx_broadcast_frames, false), - ICSSG_STATS(tx_multicast_frames, false), - ICSSG_STATS(tx_odd_nibble_frames, false), - ICSSG_STATS(tx_underflow_errors, false), - ICSSG_STATS(tx_frame_max_size, true), - ICSSG_STATS(tx_max_size_error_frames, false), - ICSSG_STATS(tx_frame_min_size, true), - ICSSG_STATS(tx_min_size_error_frames, false), - ICSSG_STATS(tx_bucket1_size, true), - ICSSG_STATS(tx_bucket2_size, true), - ICSSG_STATS(tx_bucket3_size, true), - ICSSG_STATS(tx_bucket4_size, true), - ICSSG_STATS(tx_64B_frames, true), - ICSSG_STATS(tx_bucket1_frames, true), - ICSSG_STATS(tx_bucket2_frames, true), - ICSSG_STATS(tx_bucket3_frames, true), - ICSSG_STATS(tx_bucket4_frames, true), - ICSSG_STATS(tx_bucket5_frames, true), - ICSSG_STATS(tx_bytes, true), + ICSSG_MIIG_STATS(tx_packets, true), + ICSSG_MIIG_STATS(tx_broadcast_frames, false), + ICSSG_MIIG_STATS(tx_multicast_frames, false), + ICSSG_MIIG_STATS(tx_odd_nibble_frames, false), + ICSSG_MIIG_STATS(tx_underflow_errors, false), + ICSSG_MIIG_STATS(tx_frame_max_size, true), + ICSSG_MIIG_STATS(tx_max_size_error_frames, false), + ICSSG_MIIG_STATS(tx_frame_min_size, true), + ICSSG_MIIG_STATS(tx_min_size_error_frames, false), + ICSSG_MIIG_STATS(tx_bucket1_size, true), + ICSSG_MIIG_STATS(tx_bucket2_size, true), + ICSSG_MIIG_STATS(tx_bucket3_size, true), + ICSSG_MIIG_STATS(tx_bucket4_size, true), + ICSSG_MIIG_STATS(tx_64B_frames, true), + ICSSG_MIIG_STATS(tx_bucket1_frames, true), + ICSSG_MIIG_STATS(tx_bucket2_frames, true), + ICSSG_MIIG_STATS(tx_bucket3_frames, true), + ICSSG_MIIG_STATS(tx_bucket4_frames, true), + ICSSG_MIIG_STATS(tx_bucket5_frames, true), + ICSSG_MIIG_STATS(tx_bytes, true), +}; + +/** + * struct pa_stats_regs - ICSSG Firmware maintained PA Stats register + * @fw_rx_cnt: Number of valid packets sent by Rx PRU to Host on PSI + * @fw_tx_cnt: Number of valid packets copied by RTU0 to Tx queues + * @fw_tx_pre_overflow: Host Egress Q (Pre-emptible) Overflow Counter + * @fw_tx_exp_overflow: Host Egress Q (Express) Overflow Counter + */ +struct pa_stats_regs { + u32 fw_rx_cnt; + u32 fw_tx_cnt; + u32 fw_tx_pre_overflow; + u32 fw_tx_exp_overflow; +}; + +#define ICSSG_PA_STATS(field) \ +{ \ + #field, \ + offsetof(struct pa_stats_regs, field), \ +} + +struct icssg_pa_stats { + char name[ETH_GSTRING_LEN]; + u32 offset; +}; + +static const struct icssg_pa_stats icssg_all_pa_stats[] = { + ICSSG_PA_STATS(fw_rx_cnt), + ICSSG_PA_STATS(fw_tx_cnt), + ICSSG_PA_STATS(fw_tx_pre_overflow), + ICSSG_PA_STATS(fw_tx_exp_overflow), }; #endif /* __NET_TI_ICSSG_STATS_H */ diff --git a/drivers/net/ethernet/ti/icssg/icssg_switchdev.c b/drivers/net/ethernet/ti/icssg/icssg_switchdev.c new file mode 100644 index 000000000000..67e2927e176d --- /dev/null +++ b/drivers/net/ethernet/ti/icssg/icssg_switchdev.c @@ -0,0 +1,477 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Texas Instruments K3 ICSSG Ethernet Switchdev Driver + * + * Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/ + * + */ + +#include <linux/etherdevice.h> +#include <linux/if_bridge.h> +#include <linux/netdevice.h> +#include <linux/workqueue.h> +#include <net/switchdev.h> + +#include "icssg_prueth.h" +#include "icssg_switchdev.h" +#include "icssg_mii_rt.h" + +struct prueth_switchdev_event_work { + struct work_struct work; + struct switchdev_notifier_fdb_info fdb_info; + struct prueth_emac *emac; + unsigned long event; +}; + +static int prueth_switchdev_stp_state_set(struct prueth_emac *emac, + u8 state) +{ + enum icssg_port_state_cmd emac_state; + int ret = 0; + + switch (state) { + case BR_STATE_FORWARDING: + emac_state = ICSSG_EMAC_PORT_FORWARD; + break; + case BR_STATE_DISABLED: + emac_state = ICSSG_EMAC_PORT_DISABLE; + break; + case BR_STATE_LISTENING: + case BR_STATE_BLOCKING: + emac_state = ICSSG_EMAC_PORT_BLOCK; + break; + default: + return -EOPNOTSUPP; + } + + icssg_set_port_state(emac, emac_state); + netdev_dbg(emac->ndev, "STP state: %u\n", emac_state); + + return ret; +} + +static int prueth_switchdev_attr_br_flags_set(struct prueth_emac *emac, + struct net_device *orig_dev, + struct switchdev_brport_flags brport_flags) +{ + enum icssg_port_state_cmd emac_state; + + if (brport_flags.mask & BR_MCAST_FLOOD) + emac_state = ICSSG_EMAC_PORT_MC_FLOODING_ENABLE; + else + emac_state = ICSSG_EMAC_PORT_MC_FLOODING_DISABLE; + + netdev_dbg(emac->ndev, "BR_MCAST_FLOOD: %d port %u\n", + emac_state, emac->port_id); + + icssg_set_port_state(emac, emac_state); + + return 0; +} + +static int prueth_switchdev_attr_br_flags_pre_set(struct net_device *netdev, + struct switchdev_brport_flags brport_flags) +{ + if (brport_flags.mask & ~(BR_LEARNING | BR_MCAST_FLOOD)) + return -EINVAL; + + return 0; +} + +static int prueth_switchdev_attr_set(struct net_device *ndev, const void *ctx, + const struct switchdev_attr *attr, + struct netlink_ext_ack *extack) +{ + struct prueth_emac *emac = netdev_priv(ndev); + int ret; + + netdev_dbg(ndev, "attr: id %u port: %u\n", attr->id, emac->port_id); + + switch (attr->id) { + case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: + ret = prueth_switchdev_attr_br_flags_pre_set(ndev, + attr->u.brport_flags); + break; + case SWITCHDEV_ATTR_ID_PORT_STP_STATE: + ret = prueth_switchdev_stp_state_set(emac, + attr->u.stp_state); + netdev_dbg(ndev, "stp state: %u\n", attr->u.stp_state); + break; + case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: + ret = prueth_switchdev_attr_br_flags_set(emac, attr->orig_dev, + attr->u.brport_flags); + break; + default: + ret = -EOPNOTSUPP; + break; + } + + return ret; +} + +static void prueth_switchdev_fdb_offload_notify(struct net_device *ndev, + struct switchdev_notifier_fdb_info *rcv) +{ + struct switchdev_notifier_fdb_info info; + + memset(&info, 0, sizeof(info)); + info.addr = rcv->addr; + info.vid = rcv->vid; + info.offloaded = true; + call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, + ndev, &info.info, NULL); +} + +static void prueth_switchdev_event_work(struct work_struct *work) +{ + struct prueth_switchdev_event_work *switchdev_work = + container_of(work, struct prueth_switchdev_event_work, work); + struct prueth_emac *emac = switchdev_work->emac; + struct switchdev_notifier_fdb_info *fdb; + int port_id = emac->port_id; + int ret; + + rtnl_lock(); + switch (switchdev_work->event) { + case SWITCHDEV_FDB_ADD_TO_DEVICE: + fdb = &switchdev_work->fdb_info; + + netdev_dbg(emac->ndev, "prueth_fdb_add: MACID = %pM vid = %u flags = %u %u -- port %d\n", + fdb->addr, fdb->vid, fdb->added_by_user, + fdb->offloaded, port_id); + + if (!fdb->added_by_user) + break; + if (!ether_addr_equal(emac->mac_addr, fdb->addr)) + break; + + ret = icssg_fdb_add_del(emac, fdb->addr, fdb->vid, + BIT(port_id), true); + if (!ret) + prueth_switchdev_fdb_offload_notify(emac->ndev, fdb); + break; + case SWITCHDEV_FDB_DEL_TO_DEVICE: + fdb = &switchdev_work->fdb_info; + + netdev_dbg(emac->ndev, "prueth_fdb_del: MACID = %pM vid = %u flags = %u %u -- port %d\n", + fdb->addr, fdb->vid, fdb->added_by_user, + fdb->offloaded, port_id); + + if (!fdb->added_by_user) + break; + if (!ether_addr_equal(emac->mac_addr, fdb->addr)) + break; + icssg_fdb_add_del(emac, fdb->addr, fdb->vid, + BIT(port_id), false); + break; + default: + break; + } + rtnl_unlock(); + + kfree(switchdev_work->fdb_info.addr); + kfree(switchdev_work); + dev_put(emac->ndev); +} + +static int prueth_switchdev_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *ndev = switchdev_notifier_info_to_dev(ptr); + struct prueth_switchdev_event_work *switchdev_work; + struct switchdev_notifier_fdb_info *fdb_info = ptr; + struct prueth_emac *emac = netdev_priv(ndev); + int err; + + if (!prueth_dev_check(ndev)) + return NOTIFY_DONE; + + if (event == SWITCHDEV_PORT_ATTR_SET) { + err = switchdev_handle_port_attr_set(ndev, ptr, + prueth_dev_check, + prueth_switchdev_attr_set); + return notifier_from_errno(err); + } + + switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); + if (WARN_ON(!switchdev_work)) + return NOTIFY_BAD; + + INIT_WORK(&switchdev_work->work, prueth_switchdev_event_work); + switchdev_work->emac = emac; + switchdev_work->event = event; + + switch (event) { + case SWITCHDEV_FDB_ADD_TO_DEVICE: + case SWITCHDEV_FDB_DEL_TO_DEVICE: + memcpy(&switchdev_work->fdb_info, ptr, + sizeof(switchdev_work->fdb_info)); + switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); + if (!switchdev_work->fdb_info.addr) + goto err_addr_alloc; + ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, + fdb_info->addr); + dev_hold(ndev); + break; + default: + kfree(switchdev_work); + return NOTIFY_DONE; + } + + queue_work(system_long_wq, &switchdev_work->work); + + return NOTIFY_DONE; + +err_addr_alloc: + kfree(switchdev_work); + return NOTIFY_BAD; +} + +static int prueth_switchdev_vlan_add(struct prueth_emac *emac, bool untag, bool pvid, + u8 vid, struct net_device *orig_dev) +{ + bool cpu_port = netif_is_bridge_master(orig_dev); + int untag_mask = 0; + int port_mask; + int ret = 0; + + if (cpu_port) + port_mask = BIT(PRUETH_PORT_HOST); + else + port_mask = BIT(emac->port_id); + + if (untag) + untag_mask = port_mask; + + icssg_vtbl_modify(emac, vid, port_mask, untag_mask, true); + + netdev_dbg(emac->ndev, "VID add vid:%u port_mask:%X untag_mask %X PVID %d\n", + vid, port_mask, untag_mask, pvid); + + if (!pvid) + return ret; + + icssg_set_pvid(emac->prueth, vid, emac->port_id); + + return ret; +} + +static int prueth_switchdev_vlan_del(struct prueth_emac *emac, u16 vid, + struct net_device *orig_dev) +{ + bool cpu_port = netif_is_bridge_master(orig_dev); + int port_mask; + int ret = 0; + + if (cpu_port) + port_mask = BIT(PRUETH_PORT_HOST); + else + port_mask = BIT(emac->port_id); + + icssg_vtbl_modify(emac, vid, port_mask, 0, false); + + if (cpu_port) + icssg_fdb_add_del(emac, emac->mac_addr, vid, + BIT(PRUETH_PORT_HOST), false); + + if (vid == icssg_get_pvid(emac)) + icssg_set_pvid(emac->prueth, 0, emac->port_id); + + netdev_dbg(emac->ndev, "VID del vid:%u port_mask:%X\n", + vid, port_mask); + + return ret; +} + +static int prueth_switchdev_vlans_add(struct prueth_emac *emac, + const struct switchdev_obj_port_vlan *vlan) +{ + bool untag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; + struct net_device *orig_dev = vlan->obj.orig_dev; + bool cpu_port = netif_is_bridge_master(orig_dev); + bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; + + netdev_dbg(emac->ndev, "VID add vid:%u flags:%X\n", + vlan->vid, vlan->flags); + + if (cpu_port && !(vlan->flags & BRIDGE_VLAN_INFO_BRENTRY)) + return 0; + + if (vlan->vid > 0xff) + return 0; + + return prueth_switchdev_vlan_add(emac, untag, pvid, vlan->vid, + orig_dev); +} + +static int prueth_switchdev_vlans_del(struct prueth_emac *emac, + const struct switchdev_obj_port_vlan *vlan) +{ + if (vlan->vid > 0xff) + return 0; + + return prueth_switchdev_vlan_del(emac, vlan->vid, + vlan->obj.orig_dev); +} + +static int prueth_switchdev_mdb_add(struct prueth_emac *emac, + struct switchdev_obj_port_mdb *mdb) +{ + struct net_device *orig_dev = mdb->obj.orig_dev; + u8 port_mask, fid_c2; + bool cpu_port; + int err; + + cpu_port = netif_is_bridge_master(orig_dev); + + if (cpu_port) + port_mask = BIT(PRUETH_PORT_HOST); + else + port_mask = BIT(emac->port_id); + + fid_c2 = icssg_fdb_lookup(emac, mdb->addr, mdb->vid); + + err = icssg_fdb_add_del(emac, mdb->addr, mdb->vid, fid_c2 | port_mask, true); + netdev_dbg(emac->ndev, "MDB add vid %u:%pM ports: %X\n", + mdb->vid, mdb->addr, port_mask); + + return err; +} + +static int prueth_switchdev_mdb_del(struct prueth_emac *emac, + struct switchdev_obj_port_mdb *mdb) +{ + struct net_device *orig_dev = mdb->obj.orig_dev; + int del_mask, ret, fid_c2; + bool cpu_port; + + cpu_port = netif_is_bridge_master(orig_dev); + + if (cpu_port) + del_mask = BIT(PRUETH_PORT_HOST); + else + del_mask = BIT(emac->port_id); + + fid_c2 = icssg_fdb_lookup(emac, mdb->addr, mdb->vid); + + if (fid_c2 & ~del_mask) + ret = icssg_fdb_add_del(emac, mdb->addr, mdb->vid, fid_c2 & ~del_mask, true); + else + ret = icssg_fdb_add_del(emac, mdb->addr, mdb->vid, 0, false); + + netdev_dbg(emac->ndev, "MDB del vid %u:%pM ports: %X\n", + mdb->vid, mdb->addr, del_mask); + + return ret; +} + +static int prueth_switchdev_obj_add(struct net_device *ndev, const void *ctx, + const struct switchdev_obj *obj, + struct netlink_ext_ack *extack) +{ + struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); + struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj); + struct prueth_emac *emac = netdev_priv(ndev); + int err = 0; + + netdev_dbg(ndev, "obj_add: id %u port: %u\n", obj->id, emac->port_id); + + switch (obj->id) { + case SWITCHDEV_OBJ_ID_PORT_VLAN: + err = prueth_switchdev_vlans_add(emac, vlan); + break; + case SWITCHDEV_OBJ_ID_PORT_MDB: + case SWITCHDEV_OBJ_ID_HOST_MDB: + err = prueth_switchdev_mdb_add(emac, mdb); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int prueth_switchdev_obj_del(struct net_device *ndev, const void *ctx, + const struct switchdev_obj *obj) +{ + struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); + struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj); + struct prueth_emac *emac = netdev_priv(ndev); + int err = 0; + + netdev_dbg(ndev, "obj_del: id %u port: %u\n", obj->id, emac->port_id); + + switch (obj->id) { + case SWITCHDEV_OBJ_ID_PORT_VLAN: + err = prueth_switchdev_vlans_del(emac, vlan); + break; + case SWITCHDEV_OBJ_ID_PORT_MDB: + case SWITCHDEV_OBJ_ID_HOST_MDB: + err = prueth_switchdev_mdb_del(emac, mdb); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int prueth_switchdev_blocking_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = switchdev_notifier_info_to_dev(ptr); + int err; + + switch (event) { + case SWITCHDEV_PORT_OBJ_ADD: + err = switchdev_handle_port_obj_add(dev, ptr, + prueth_dev_check, + prueth_switchdev_obj_add); + return notifier_from_errno(err); + case SWITCHDEV_PORT_OBJ_DEL: + err = switchdev_handle_port_obj_del(dev, ptr, + prueth_dev_check, + prueth_switchdev_obj_del); + return notifier_from_errno(err); + case SWITCHDEV_PORT_ATTR_SET: + err = switchdev_handle_port_attr_set(dev, ptr, + prueth_dev_check, + prueth_switchdev_attr_set); + return notifier_from_errno(err); + default: + break; + } + + return NOTIFY_DONE; +} + +int prueth_switchdev_register_notifiers(struct prueth *prueth) +{ + int ret = 0; + + prueth->prueth_switchdev_nb.notifier_call = &prueth_switchdev_event; + ret = register_switchdev_notifier(&prueth->prueth_switchdev_nb); + if (ret) { + dev_err(prueth->dev, "register switchdev notifier fail ret:%d\n", + ret); + return ret; + } + + prueth->prueth_switchdev_bl_nb.notifier_call = &prueth_switchdev_blocking_event; + ret = register_switchdev_blocking_notifier(&prueth->prueth_switchdev_bl_nb); + if (ret) { + dev_err(prueth->dev, "register switchdev blocking notifier ret:%d\n", + ret); + unregister_switchdev_notifier(&prueth->prueth_switchdev_nb); + } + + return ret; +} + +void prueth_switchdev_unregister_notifiers(struct prueth *prueth) +{ + unregister_switchdev_blocking_notifier(&prueth->prueth_switchdev_bl_nb); + unregister_switchdev_notifier(&prueth->prueth_switchdev_nb); +} diff --git a/drivers/net/ethernet/ti/icssg/icssg_switchdev.h b/drivers/net/ethernet/ti/icssg/icssg_switchdev.h new file mode 100644 index 000000000000..0e64e7760a00 --- /dev/null +++ b/drivers/net/ethernet/ti/icssg/icssg_switchdev.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/ + */ +#ifndef __NET_TI_ICSSG_SWITCHDEV_H +#define __NET_TI_ICSSG_SWITCHDEV_H + +#include "icssg_prueth.h" + +int prueth_switchdev_register_notifiers(struct prueth *prueth); +void prueth_switchdev_unregister_notifiers(struct prueth *prueth); +bool prueth_dev_check(const struct net_device *ndev); + +#endif /* __NET_TI_ICSSG_SWITCHDEV_H */ |