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03679a1473
The macro to write 64-bits quantities to the 32-bits register swapped
the value and offsets arguments, we want to preserve the ordering of the
arguments with respect to how writel() is implemented for instance:
value first, offset/base second.
Fixes: 246d7f773c ("net: dsa: add Broadcom SF2 switch driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
150 lines
3.6 KiB
C
150 lines
3.6 KiB
C
/*
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* Broadcom Starfighter2 private context
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*
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* Copyright (C) 2014, Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __BCM_SF2_H
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#define __BCM_SF2_H
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#include <linux/platform_device.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <net/dsa.h>
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#include "bcm_sf2_regs.h"
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struct bcm_sf2_hw_params {
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u16 top_rev;
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u16 core_rev;
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u16 gphy_rev;
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u32 num_gphy;
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u8 num_acb_queue;
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u8 num_rgmii;
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u8 num_ports;
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u8 fcb_pause_override:1;
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u8 acb_packets_inflight:1;
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};
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#define BCM_SF2_REGS_NAME {\
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"core", "reg", "intrl2_0", "intrl2_1", "fcb", "acb" \
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}
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#define BCM_SF2_REGS_NUM 6
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struct bcm_sf2_port_status {
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unsigned int link;
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struct ethtool_eee eee;
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u32 vlan_ctl_mask;
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};
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struct bcm_sf2_priv {
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/* Base registers, keep those in order with BCM_SF2_REGS_NAME */
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void __iomem *core;
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void __iomem *reg;
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void __iomem *intrl2_0;
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void __iomem *intrl2_1;
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void __iomem *fcb;
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void __iomem *acb;
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/* spinlock protecting access to the indirect registers */
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spinlock_t indir_lock;
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int irq0;
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int irq1;
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u32 irq0_stat;
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u32 irq0_mask;
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u32 irq1_stat;
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u32 irq1_mask;
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/* Mutex protecting access to the MIB counters */
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struct mutex stats_mutex;
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struct bcm_sf2_hw_params hw_params;
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struct bcm_sf2_port_status port_sts[DSA_MAX_PORTS];
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/* Mask of ports enabled for Wake-on-LAN */
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u32 wol_ports_mask;
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};
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struct bcm_sf2_hw_stats {
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const char *string;
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u16 reg;
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u8 sizeof_stat;
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};
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#define SF2_IO_MACRO(name) \
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static inline u32 name##_readl(struct bcm_sf2_priv *priv, u32 off) \
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{ \
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return __raw_readl(priv->name + off); \
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} \
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static inline void name##_writel(struct bcm_sf2_priv *priv, \
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u32 val, u32 off) \
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{ \
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__raw_writel(val, priv->name + off); \
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} \
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/* Accesses to 64-bits register requires us to latch the hi/lo pairs
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* using the REG_DIR_DATA_{READ,WRITE} ancillary registers. The 'indir_lock'
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* spinlock is automatically grabbed and released to provide relative
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* atomiticy with latched reads/writes.
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*/
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#define SF2_IO64_MACRO(name) \
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static inline u64 name##_readq(struct bcm_sf2_priv *priv, u32 off) \
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{ \
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u32 indir, dir; \
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spin_lock(&priv->indir_lock); \
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dir = __raw_readl(priv->name + off); \
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indir = reg_readl(priv, REG_DIR_DATA_READ); \
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spin_unlock(&priv->indir_lock); \
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return (u64)indir << 32 | dir; \
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} \
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static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val, \
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u32 off) \
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{ \
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spin_lock(&priv->indir_lock); \
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reg_writel(priv, upper_32_bits(val), REG_DIR_DATA_WRITE); \
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__raw_writel(lower_32_bits(val), priv->name + off); \
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spin_unlock(&priv->indir_lock); \
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}
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#define SWITCH_INTR_L2(which) \
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static inline void intrl2_##which##_mask_clear(struct bcm_sf2_priv *priv, \
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u32 mask) \
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{ \
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intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \
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priv->irq##which##_mask &= ~(mask); \
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} \
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static inline void intrl2_##which##_mask_set(struct bcm_sf2_priv *priv, \
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u32 mask) \
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{ \
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intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \
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priv->irq##which##_mask |= (mask); \
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} \
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SF2_IO_MACRO(core);
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SF2_IO_MACRO(reg);
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SF2_IO64_MACRO(core);
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SF2_IO_MACRO(intrl2_0);
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SF2_IO_MACRO(intrl2_1);
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SF2_IO_MACRO(fcb);
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SF2_IO_MACRO(acb);
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SWITCH_INTR_L2(0);
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SWITCH_INTR_L2(1);
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#endif /* __BCM_SF2_H */
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