2 * Broadcom Starfighter2 private context
4 * Copyright (C) 2014, Broadcom Corporation
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.
15 #include <linux/platform_device.h>
16 #include <linux/kernel.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>
27 #include "bcm_sf2_regs.h"
29 struct bcm_sf2_hw_params {
37 u8 fcb_pause_override:1;
38 u8 acb_packets_inflight:1;
41 #define BCM_SF2_REGS_NAME {\
42 "core", "reg", "intrl2_0", "intrl2_1", "fcb", "acb" \
45 #define BCM_SF2_REGS_NUM 6
47 struct bcm_sf2_port_status {
50 struct ethtool_eee eee;
54 struct net_device *bridge_dev;
57 struct bcm_sf2_arl_entry {
66 static inline void bcm_sf2_mac_from_u64(u64 src, u8 *dst)
70 for (i = 0; i < ETH_ALEN; i++)
71 dst[ETH_ALEN - 1 - i] = (src >> (8 * i)) & 0xff;
74 static inline u64 bcm_sf2_mac_to_u64(const u8 *src)
79 for (i = 0; i < ETH_ALEN; i++)
80 dst |= (u64)src[ETH_ALEN - 1 - i] << (8 * i);
85 static inline void bcm_sf2_arl_to_entry(struct bcm_sf2_arl_entry *ent,
86 u64 mac_vid, u32 fwd_entry)
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;
97 static inline void bcm_sf2_arl_from_entry(u64 *mac_vid, u32 *fwd_entry,
98 const struct bcm_sf2_arl_entry *ent)
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;
104 *fwd_entry |= ARL_VALID;
106 *fwd_entry |= ARL_STATIC;
108 *fwd_entry |= ARL_AGE;
111 struct bcm_sf2_priv {
112 /* Base registers, keep those in order with BCM_SF2_REGS_NAME */
115 void __iomem *intrl2_0;
116 void __iomem *intrl2_1;
120 /* spinlock protecting access to the indirect registers */
121 spinlock_t indir_lock;
130 /* Mutex protecting access to the MIB counters */
131 struct mutex stats_mutex;
133 struct bcm_sf2_hw_params hw_params;
135 struct bcm_sf2_port_status port_sts[DSA_MAX_PORTS];
137 /* Mask of ports enabled for Wake-on-LAN */
140 /* MoCA port location */
143 /* Bitmask of ports having an integrated PHY */
144 unsigned int int_phy_mask;
147 struct bcm_sf2_hw_stats {
153 #define SF2_IO_MACRO(name) \
154 static inline u32 name##_readl(struct bcm_sf2_priv *priv, u32 off) \
156 return __raw_readl(priv->name + off); \
158 static inline void name##_writel(struct bcm_sf2_priv *priv, \
161 __raw_writel(val, priv->name + off); \
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.
169 #define SF2_IO64_MACRO(name) \
170 static inline u64 name##_readq(struct bcm_sf2_priv *priv, u32 off) \
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; \
179 static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val, \
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); \
188 #define SWITCH_INTR_L2(which) \
189 static inline void intrl2_##which##_mask_clear(struct bcm_sf2_priv *priv, \
192 intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \
193 priv->irq##which##_mask &= ~(mask); \
195 static inline void intrl2_##which##_mask_set(struct bcm_sf2_priv *priv, \
198 intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \
199 priv->irq##which##_mask |= (mask); \
204 SF2_IO64_MACRO(core);
205 SF2_IO_MACRO(intrl2_0);
206 SF2_IO_MACRO(intrl2_1);
213 #endif /* __BCM_SF2_H */