1 /* 2 * Broadcom Starfighter2 private context 3 * 4 * Copyright (C) 2014, Broadcom Corporation 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 12 #ifndef __BCM_SF2_H 13 #define __BCM_SF2_H 14 15 #include <linux/platform_device.h> 16 #include <linux/kernel.h> 17 #include <linux/io.h> 18 #include <linux/spinlock.h> 19 #include <linux/mutex.h> 20 #include <linux/mii.h> 21 #include <linux/ethtool.h> 22 #include <linux/types.h> 23 #include <linux/bitops.h> 24 25 #include <net/dsa.h> 26 27 #include "bcm_sf2_regs.h" 28 29 struct bcm_sf2_hw_params { 30 u16 top_rev; 31 u16 core_rev; 32 u16 gphy_rev; 33 u32 num_gphy; 34 u8 num_acb_queue; 35 u8 num_rgmii; 36 u8 num_ports; 37 u8 fcb_pause_override:1; 38 u8 acb_packets_inflight:1; 39 }; 40 41 #define BCM_SF2_REGS_NAME {\ 42 "core", "reg", "intrl2_0", "intrl2_1", "fcb", "acb" \ 43 } 44 45 #define BCM_SF2_REGS_NUM 6 46 47 struct bcm_sf2_port_status { 48 unsigned int link; 49 50 struct ethtool_eee eee; 51 52 u32 vlan_ctl_mask; 53 54 struct net_device *bridge_dev; 55 }; 56 57 struct bcm_sf2_arl_entry { 58 u8 port; 59 u8 mac[ETH_ALEN]; 60 u16 vid; 61 u8 is_valid:1; 62 u8 is_age:1; 63 u8 is_static:1; 64 }; 65 66 static inline void bcm_sf2_mac_from_u64(u64 src, u8 *dst) 67 { 68 unsigned int i; 69 70 for (i = 0; i < ETH_ALEN; i++) 71 dst[ETH_ALEN - 1 - i] = (src >> (8 * i)) & 0xff; 72 } 73 74 static inline u64 bcm_sf2_mac_to_u64(const u8 *src) 75 { 76 unsigned int i; 77 u64 dst = 0; 78 79 for (i = 0; i < ETH_ALEN; i++) 80 dst |= (u64)src[ETH_ALEN - 1 - i] << (8 * i); 81 82 return dst; 83 } 84 85 static inline void bcm_sf2_arl_to_entry(struct bcm_sf2_arl_entry *ent, 86 u64 mac_vid, u32 fwd_entry) 87 { 88 memset(ent, 0, sizeof(*ent)); 89 ent->port = fwd_entry & PORTID_MASK; 90 ent->is_valid = !!(fwd_entry & ARL_VALID); 91 ent->is_age = !!(fwd_entry & ARL_AGE); 92 ent->is_static = !!(fwd_entry & ARL_STATIC); 93 bcm_sf2_mac_from_u64(mac_vid, ent->mac); 94 ent->vid = mac_vid >> VID_SHIFT; 95 } 96 97 static inline void bcm_sf2_arl_from_entry(u64 *mac_vid, u32 *fwd_entry, 98 const struct bcm_sf2_arl_entry *ent) 99 { 100 *mac_vid = bcm_sf2_mac_to_u64(ent->mac); 101 *mac_vid |= (u64)(ent->vid & VID_MASK) << VID_SHIFT; 102 *fwd_entry = ent->port & PORTID_MASK; 103 if (ent->is_valid) 104 *fwd_entry |= ARL_VALID; 105 if (ent->is_static) 106 *fwd_entry |= ARL_STATIC; 107 if (ent->is_age) 108 *fwd_entry |= ARL_AGE; 109 } 110 111 struct bcm_sf2_priv { 112 /* Base registers, keep those in order with BCM_SF2_REGS_NAME */ 113 void __iomem *core; 114 void __iomem *reg; 115 void __iomem *intrl2_0; 116 void __iomem *intrl2_1; 117 void __iomem *fcb; 118 void __iomem *acb; 119 120 /* spinlock protecting access to the indirect registers */ 121 spinlock_t indir_lock; 122 123 int irq0; 124 int irq1; 125 u32 irq0_stat; 126 u32 irq0_mask; 127 u32 irq1_stat; 128 u32 irq1_mask; 129 130 /* Mutex protecting access to the MIB counters */ 131 struct mutex stats_mutex; 132 133 struct bcm_sf2_hw_params hw_params; 134 135 struct bcm_sf2_port_status port_sts[DSA_MAX_PORTS]; 136 137 /* Mask of ports enabled for Wake-on-LAN */ 138 u32 wol_ports_mask; 139 140 /* MoCA port location */ 141 int moca_port; 142 143 /* Bitmask of ports having an integrated PHY */ 144 unsigned int int_phy_mask; 145 }; 146 147 struct bcm_sf2_hw_stats { 148 const char *string; 149 u16 reg; 150 u8 sizeof_stat; 151 }; 152 153 #define SF2_IO_MACRO(name) \ 154 static inline u32 name##_readl(struct bcm_sf2_priv *priv, u32 off) \ 155 { \ 156 return __raw_readl(priv->name + off); \ 157 } \ 158 static inline void name##_writel(struct bcm_sf2_priv *priv, \ 159 u32 val, u32 off) \ 160 { \ 161 __raw_writel(val, priv->name + off); \ 162 } \ 163 164 /* Accesses to 64-bits register requires us to latch the hi/lo pairs 165 * using the REG_DIR_DATA_{READ,WRITE} ancillary registers. The 'indir_lock' 166 * spinlock is automatically grabbed and released to provide relative 167 * atomiticy with latched reads/writes. 168 */ 169 #define SF2_IO64_MACRO(name) \ 170 static inline u64 name##_readq(struct bcm_sf2_priv *priv, u32 off) \ 171 { \ 172 u32 indir, dir; \ 173 spin_lock(&priv->indir_lock); \ 174 dir = __raw_readl(priv->name + off); \ 175 indir = reg_readl(priv, REG_DIR_DATA_READ); \ 176 spin_unlock(&priv->indir_lock); \ 177 return (u64)indir << 32 | dir; \ 178 } \ 179 static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val, \ 180 u32 off) \ 181 { \ 182 spin_lock(&priv->indir_lock); \ 183 reg_writel(priv, upper_32_bits(val), REG_DIR_DATA_WRITE); \ 184 __raw_writel(lower_32_bits(val), priv->name + off); \ 185 spin_unlock(&priv->indir_lock); \ 186 } 187 188 #define SWITCH_INTR_L2(which) \ 189 static inline void intrl2_##which##_mask_clear(struct bcm_sf2_priv *priv, \ 190 u32 mask) \ 191 { \ 192 intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \ 193 priv->irq##which##_mask &= ~(mask); \ 194 } \ 195 static inline void intrl2_##which##_mask_set(struct bcm_sf2_priv *priv, \ 196 u32 mask) \ 197 { \ 198 intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \ 199 priv->irq##which##_mask |= (mask); \ 200 } \ 201 202 SF2_IO_MACRO(core); 203 SF2_IO_MACRO(reg); 204 SF2_IO64_MACRO(core); 205 SF2_IO_MACRO(intrl2_0); 206 SF2_IO_MACRO(intrl2_1); 207 SF2_IO_MACRO(fcb); 208 SF2_IO_MACRO(acb); 209 210 SWITCH_INTR_L2(0); 211 SWITCH_INTR_L2(1); 212 213 #endif /* __BCM_SF2_H */ 214