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 23 #include <net/dsa.h> 24 25 #include "bcm_sf2_regs.h" 26 27 struct bcm_sf2_hw_params { 28 u16 top_rev; 29 u16 core_rev; 30 u16 gphy_rev; 31 u32 num_gphy; 32 u8 num_acb_queue; 33 u8 num_rgmii; 34 u8 num_ports; 35 u8 fcb_pause_override:1; 36 u8 acb_packets_inflight:1; 37 }; 38 39 #define BCM_SF2_REGS_NAME {\ 40 "core", "reg", "intrl2_0", "intrl2_1", "fcb", "acb" \ 41 } 42 43 #define BCM_SF2_REGS_NUM 6 44 45 struct bcm_sf2_port_status { 46 unsigned int link; 47 48 struct ethtool_eee eee; 49 50 u32 vlan_ctl_mask; 51 }; 52 53 struct bcm_sf2_priv { 54 /* Base registers, keep those in order with BCM_SF2_REGS_NAME */ 55 void __iomem *core; 56 void __iomem *reg; 57 void __iomem *intrl2_0; 58 void __iomem *intrl2_1; 59 void __iomem *fcb; 60 void __iomem *acb; 61 62 /* spinlock protecting access to the indirect registers */ 63 spinlock_t indir_lock; 64 65 int irq0; 66 int irq1; 67 u32 irq0_stat; 68 u32 irq0_mask; 69 u32 irq1_stat; 70 u32 irq1_mask; 71 72 /* Mutex protecting access to the MIB counters */ 73 struct mutex stats_mutex; 74 75 struct bcm_sf2_hw_params hw_params; 76 77 struct bcm_sf2_port_status port_sts[DSA_MAX_PORTS]; 78 79 /* Mask of ports enabled for Wake-on-LAN */ 80 u32 wol_ports_mask; 81 }; 82 83 struct bcm_sf2_hw_stats { 84 const char *string; 85 u16 reg; 86 u8 sizeof_stat; 87 }; 88 89 #define SF2_IO_MACRO(name) \ 90 static inline u32 name##_readl(struct bcm_sf2_priv *priv, u32 off) \ 91 { \ 92 return __raw_readl(priv->name + off); \ 93 } \ 94 static inline void name##_writel(struct bcm_sf2_priv *priv, \ 95 u32 val, u32 off) \ 96 { \ 97 __raw_writel(val, priv->name + off); \ 98 } \ 99 100 /* Accesses to 64-bits register requires us to latch the hi/lo pairs 101 * using the REG_DIR_DATA_{READ,WRITE} ancillary registers. The 'indir_lock' 102 * spinlock is automatically grabbed and released to provide relative 103 * atomiticy with latched reads/writes. 104 */ 105 #define SF2_IO64_MACRO(name) \ 106 static inline u64 name##_readq(struct bcm_sf2_priv *priv, u32 off) \ 107 { \ 108 u32 indir, dir; \ 109 spin_lock(&priv->indir_lock); \ 110 dir = __raw_readl(priv->name + off); \ 111 indir = reg_readl(priv, REG_DIR_DATA_READ); \ 112 spin_unlock(&priv->indir_lock); \ 113 return (u64)indir << 32 | dir; \ 114 } \ 115 static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val, \ 116 u32 off) \ 117 { \ 118 spin_lock(&priv->indir_lock); \ 119 reg_writel(priv, upper_32_bits(val), REG_DIR_DATA_WRITE); \ 120 __raw_writel(lower_32_bits(val), priv->name + off); \ 121 spin_unlock(&priv->indir_lock); \ 122 } 123 124 #define SWITCH_INTR_L2(which) \ 125 static inline void intrl2_##which##_mask_clear(struct bcm_sf2_priv *priv, \ 126 u32 mask) \ 127 { \ 128 intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \ 129 priv->irq##which##_mask &= ~(mask); \ 130 } \ 131 static inline void intrl2_##which##_mask_set(struct bcm_sf2_priv *priv, \ 132 u32 mask) \ 133 { \ 134 intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \ 135 priv->irq##which##_mask |= (mask); \ 136 } \ 137 138 SF2_IO_MACRO(core); 139 SF2_IO_MACRO(reg); 140 SF2_IO64_MACRO(core); 141 SF2_IO_MACRO(intrl2_0); 142 SF2_IO_MACRO(intrl2_1); 143 SF2_IO_MACRO(fcb); 144 SF2_IO_MACRO(acb); 145 146 SWITCH_INTR_L2(0); 147 SWITCH_INTR_L2(1); 148 149 #endif /* __BCM_SF2_H */ 150