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 55 struct bcm_sf2_arl_entry { 56 u8 port; 57 u8 mac[ETH_ALEN]; 58 u16 vid; 59 u8 is_valid:1; 60 u8 is_age:1; 61 u8 is_static:1; 62 }; 63 64 static inline void bcm_sf2_mac_from_u64(u64 src, u8 *dst) 65 { 66 unsigned int i; 67 68 for (i = 0; i < ETH_ALEN; i++) 69 dst[ETH_ALEN - 1 - i] = (src >> (8 * i)) & 0xff; 70 } 71 72 static inline u64 bcm_sf2_mac_to_u64(const u8 *src) 73 { 74 unsigned int i; 75 u64 dst = 0; 76 77 for (i = 0; i < ETH_ALEN; i++) 78 dst |= (u64)src[ETH_ALEN - 1 - i] << (8 * i); 79 80 return dst; 81 } 82 83 static inline void bcm_sf2_arl_to_entry(struct bcm_sf2_arl_entry *ent, 84 u64 mac_vid, u32 fwd_entry) 85 { 86 memset(ent, 0, sizeof(*ent)); 87 ent->port = fwd_entry & PORTID_MASK; 88 ent->is_valid = !!(fwd_entry & ARL_VALID); 89 ent->is_age = !!(fwd_entry & ARL_AGE); 90 ent->is_static = !!(fwd_entry & ARL_STATIC); 91 bcm_sf2_mac_from_u64(mac_vid, ent->mac); 92 ent->vid = mac_vid >> VID_SHIFT; 93 } 94 95 static inline void bcm_sf2_arl_from_entry(u64 *mac_vid, u32 *fwd_entry, 96 const struct bcm_sf2_arl_entry *ent) 97 { 98 *mac_vid = bcm_sf2_mac_to_u64(ent->mac); 99 *mac_vid |= (u64)(ent->vid & VID_MASK) << VID_SHIFT; 100 *fwd_entry = ent->port & PORTID_MASK; 101 if (ent->is_valid) 102 *fwd_entry |= ARL_VALID; 103 if (ent->is_static) 104 *fwd_entry |= ARL_STATIC; 105 if (ent->is_age) 106 *fwd_entry |= ARL_AGE; 107 } 108 109 struct bcm_sf2_priv { 110 /* Base registers, keep those in order with BCM_SF2_REGS_NAME */ 111 void __iomem *core; 112 void __iomem *reg; 113 void __iomem *intrl2_0; 114 void __iomem *intrl2_1; 115 void __iomem *fcb; 116 void __iomem *acb; 117 118 /* spinlock protecting access to the indirect registers */ 119 spinlock_t indir_lock; 120 121 int irq0; 122 int irq1; 123 u32 irq0_stat; 124 u32 irq0_mask; 125 u32 irq1_stat; 126 u32 irq1_mask; 127 128 /* Mutex protecting access to the MIB counters */ 129 struct mutex stats_mutex; 130 131 struct bcm_sf2_hw_params hw_params; 132 133 struct bcm_sf2_port_status port_sts[DSA_MAX_PORTS]; 134 135 /* Mask of ports enabled for Wake-on-LAN */ 136 u32 wol_ports_mask; 137 138 /* MoCA port location */ 139 int moca_port; 140 141 /* Bitmask of ports having an integrated PHY */ 142 unsigned int int_phy_mask; 143 }; 144 145 struct bcm_sf2_hw_stats { 146 const char *string; 147 u16 reg; 148 u8 sizeof_stat; 149 }; 150 151 #define SF2_IO_MACRO(name) \ 152 static inline u32 name##_readl(struct bcm_sf2_priv *priv, u32 off) \ 153 { \ 154 return __raw_readl(priv->name + off); \ 155 } \ 156 static inline void name##_writel(struct bcm_sf2_priv *priv, \ 157 u32 val, u32 off) \ 158 { \ 159 __raw_writel(val, priv->name + off); \ 160 } \ 161 162 /* Accesses to 64-bits register requires us to latch the hi/lo pairs 163 * using the REG_DIR_DATA_{READ,WRITE} ancillary registers. The 'indir_lock' 164 * spinlock is automatically grabbed and released to provide relative 165 * atomiticy with latched reads/writes. 166 */ 167 #define SF2_IO64_MACRO(name) \ 168 static inline u64 name##_readq(struct bcm_sf2_priv *priv, u32 off) \ 169 { \ 170 u32 indir, dir; \ 171 spin_lock(&priv->indir_lock); \ 172 dir = __raw_readl(priv->name + off); \ 173 indir = reg_readl(priv, REG_DIR_DATA_READ); \ 174 spin_unlock(&priv->indir_lock); \ 175 return (u64)indir << 32 | dir; \ 176 } \ 177 static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val, \ 178 u32 off) \ 179 { \ 180 spin_lock(&priv->indir_lock); \ 181 reg_writel(priv, upper_32_bits(val), REG_DIR_DATA_WRITE); \ 182 __raw_writel(lower_32_bits(val), priv->name + off); \ 183 spin_unlock(&priv->indir_lock); \ 184 } 185 186 #define SWITCH_INTR_L2(which) \ 187 static inline void intrl2_##which##_mask_clear(struct bcm_sf2_priv *priv, \ 188 u32 mask) \ 189 { \ 190 intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \ 191 priv->irq##which##_mask &= ~(mask); \ 192 } \ 193 static inline void intrl2_##which##_mask_set(struct bcm_sf2_priv *priv, \ 194 u32 mask) \ 195 { \ 196 intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \ 197 priv->irq##which##_mask |= (mask); \ 198 } \ 199 200 SF2_IO_MACRO(core); 201 SF2_IO_MACRO(reg); 202 SF2_IO64_MACRO(core); 203 SF2_IO_MACRO(intrl2_0); 204 SF2_IO_MACRO(intrl2_1); 205 SF2_IO_MACRO(fcb); 206 SF2_IO_MACRO(acb); 207 208 SWITCH_INTR_L2(0); 209 SWITCH_INTR_L2(1); 210 211 #endif /* __BCM_SF2_H */ 212