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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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0dbdf819f4
The registers used to inject a frame to one of the ports is shared between all the net devices. Therefore, there can be race conditions for accessing the registers when two processes send frames at the same time on different ports. To fix this, add a spinlock around the function 'lan966x_port_ifh_xmit()'. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
334 lines
9.5 KiB
C
334 lines
9.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#ifndef __LAN966X_MAIN_H__
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#define __LAN966X_MAIN_H__
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#include <linux/etherdevice.h>
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#include <linux/if_vlan.h>
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#include <linux/jiffies.h>
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#include <linux/phy.h>
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#include <linux/phylink.h>
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#include <linux/ptp_clock_kernel.h>
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#include <net/switchdev.h>
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#include "lan966x_regs.h"
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#include "lan966x_ifh.h"
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#define TABLE_UPDATE_SLEEP_US 10
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#define TABLE_UPDATE_TIMEOUT_US 100000
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#define LAN966X_BUFFER_CELL_SZ 64
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#define LAN966X_BUFFER_MEMORY (160 * 1024)
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#define LAN966X_BUFFER_MIN_SZ 60
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#define PGID_AGGR 64
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#define PGID_SRC 80
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#define PGID_ENTRIES 89
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#define UNAWARE_PVID 0
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#define HOST_PVID 4095
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/* Reserved amount for (SRC, PRIO) at index 8*SRC + PRIO */
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#define QSYS_Q_RSRV 95
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#define CPU_PORT 8
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/* Reserved PGIDs */
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#define PGID_CPU (PGID_AGGR - 6)
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#define PGID_UC (PGID_AGGR - 5)
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#define PGID_BC (PGID_AGGR - 4)
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#define PGID_MC (PGID_AGGR - 3)
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#define PGID_MCIPV4 (PGID_AGGR - 2)
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#define PGID_MCIPV6 (PGID_AGGR - 1)
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/* Non-reserved PGIDs, used for general purpose */
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#define PGID_GP_START (CPU_PORT + 1)
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#define PGID_GP_END PGID_CPU
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#define LAN966X_SPEED_NONE 0
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#define LAN966X_SPEED_2500 1
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#define LAN966X_SPEED_1000 1
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#define LAN966X_SPEED_100 2
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#define LAN966X_SPEED_10 3
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#define LAN966X_PHC_COUNT 3
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#define LAN966X_PHC_PORT 0
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#define IFH_REW_OP_NOOP 0x0
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#define IFH_REW_OP_ONE_STEP_PTP 0x3
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#define IFH_REW_OP_TWO_STEP_PTP 0x4
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/* MAC table entry types.
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* ENTRYTYPE_NORMAL is subject to aging.
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* ENTRYTYPE_LOCKED is not subject to aging.
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* ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
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* ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
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*/
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enum macaccess_entry_type {
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ENTRYTYPE_NORMAL = 0,
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ENTRYTYPE_LOCKED,
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ENTRYTYPE_MACV4,
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ENTRYTYPE_MACV6,
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};
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struct lan966x_port;
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struct lan966x_stat_layout {
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u32 offset;
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char name[ETH_GSTRING_LEN];
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};
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struct lan966x_phc {
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struct ptp_clock *clock;
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struct ptp_clock_info info;
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struct hwtstamp_config hwtstamp_config;
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struct lan966x *lan966x;
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u8 index;
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};
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struct lan966x_skb_cb {
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u8 rew_op;
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u16 ts_id;
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unsigned long jiffies;
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};
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#define LAN966X_PTP_TIMEOUT msecs_to_jiffies(10)
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#define LAN966X_SKB_CB(skb) \
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((struct lan966x_skb_cb *)((skb)->cb))
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struct lan966x {
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struct device *dev;
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u8 num_phys_ports;
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struct lan966x_port **ports;
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void __iomem *regs[NUM_TARGETS];
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int shared_queue_sz;
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u8 base_mac[ETH_ALEN];
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spinlock_t tx_lock; /* lock for frame transmition */
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struct net_device *bridge;
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u16 bridge_mask;
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u16 bridge_fwd_mask;
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struct list_head mac_entries;
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spinlock_t mac_lock; /* lock for mac_entries list */
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u16 vlan_mask[VLAN_N_VID];
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DECLARE_BITMAP(cpu_vlan_mask, VLAN_N_VID);
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/* stats */
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const struct lan966x_stat_layout *stats_layout;
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u32 num_stats;
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/* workqueue for reading stats */
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struct mutex stats_lock;
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u64 *stats;
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struct delayed_work stats_work;
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struct workqueue_struct *stats_queue;
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/* interrupts */
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int xtr_irq;
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int ana_irq;
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int ptp_irq;
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/* worqueue for fdb */
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struct workqueue_struct *fdb_work;
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struct list_head fdb_entries;
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/* mdb */
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struct list_head mdb_entries;
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struct list_head pgid_entries;
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/* ptp */
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bool ptp;
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struct lan966x_phc phc[LAN966X_PHC_COUNT];
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spinlock_t ptp_clock_lock; /* lock for phc */
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spinlock_t ptp_ts_id_lock; /* lock for ts_id */
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struct mutex ptp_lock; /* lock for ptp interface state */
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u16 ptp_skbs;
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};
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struct lan966x_port_config {
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phy_interface_t portmode;
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const unsigned long *advertising;
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int speed;
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int duplex;
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u32 pause;
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bool inband;
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bool autoneg;
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};
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struct lan966x_port {
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struct net_device *dev;
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struct lan966x *lan966x;
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u8 chip_port;
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u16 pvid;
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u16 vid;
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bool vlan_aware;
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bool learn_ena;
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bool mcast_ena;
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struct phylink_config phylink_config;
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struct phylink_pcs phylink_pcs;
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struct lan966x_port_config config;
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struct phylink *phylink;
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struct phy *serdes;
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struct fwnode_handle *fwnode;
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u8 ptp_cmd;
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u16 ts_id;
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struct sk_buff_head tx_skbs;
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};
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extern const struct phylink_mac_ops lan966x_phylink_mac_ops;
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extern const struct phylink_pcs_ops lan966x_phylink_pcs_ops;
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extern const struct ethtool_ops lan966x_ethtool_ops;
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bool lan966x_netdevice_check(const struct net_device *dev);
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void lan966x_register_notifier_blocks(void);
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void lan966x_unregister_notifier_blocks(void);
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void lan966x_stats_get(struct net_device *dev,
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struct rtnl_link_stats64 *stats);
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int lan966x_stats_init(struct lan966x *lan966x);
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void lan966x_port_config_down(struct lan966x_port *port);
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void lan966x_port_config_up(struct lan966x_port *port);
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void lan966x_port_status_get(struct lan966x_port *port,
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struct phylink_link_state *state);
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int lan966x_port_pcs_set(struct lan966x_port *port,
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struct lan966x_port_config *config);
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void lan966x_port_init(struct lan966x_port *port);
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int lan966x_mac_ip_learn(struct lan966x *lan966x,
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bool cpu_copy,
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const unsigned char mac[ETH_ALEN],
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unsigned int vid,
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enum macaccess_entry_type type);
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int lan966x_mac_learn(struct lan966x *lan966x, int port,
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const unsigned char mac[ETH_ALEN],
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unsigned int vid,
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enum macaccess_entry_type type);
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int lan966x_mac_forget(struct lan966x *lan966x,
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const unsigned char mac[ETH_ALEN],
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unsigned int vid,
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enum macaccess_entry_type type);
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int lan966x_mac_cpu_learn(struct lan966x *lan966x, const char *addr, u16 vid);
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int lan966x_mac_cpu_forget(struct lan966x *lan966x, const char *addr, u16 vid);
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void lan966x_mac_init(struct lan966x *lan966x);
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void lan966x_mac_set_ageing(struct lan966x *lan966x,
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u32 ageing);
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int lan966x_mac_del_entry(struct lan966x *lan966x,
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const unsigned char *addr,
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u16 vid);
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int lan966x_mac_add_entry(struct lan966x *lan966x,
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struct lan966x_port *port,
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const unsigned char *addr,
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u16 vid);
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void lan966x_mac_purge_entries(struct lan966x *lan966x);
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irqreturn_t lan966x_mac_irq_handler(struct lan966x *lan966x);
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void lan966x_vlan_init(struct lan966x *lan966x);
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void lan966x_vlan_port_apply(struct lan966x_port *port);
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bool lan966x_vlan_cpu_member_cpu_vlan_mask(struct lan966x *lan966x, u16 vid);
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void lan966x_vlan_port_set_vlan_aware(struct lan966x_port *port,
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bool vlan_aware);
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int lan966x_vlan_port_set_vid(struct lan966x_port *port,
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u16 vid,
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bool pvid,
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bool untagged);
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void lan966x_vlan_port_add_vlan(struct lan966x_port *port,
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u16 vid,
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bool pvid,
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bool untagged);
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void lan966x_vlan_port_del_vlan(struct lan966x_port *port, u16 vid);
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void lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, u16 vid);
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void lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, u16 vid);
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void lan966x_fdb_write_entries(struct lan966x *lan966x, u16 vid);
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void lan966x_fdb_erase_entries(struct lan966x *lan966x, u16 vid);
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int lan966x_fdb_init(struct lan966x *lan966x);
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void lan966x_fdb_deinit(struct lan966x *lan966x);
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int lan966x_handle_fdb(struct net_device *dev,
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struct net_device *orig_dev,
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unsigned long event, const void *ctx,
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const struct switchdev_notifier_fdb_info *fdb_info);
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void lan966x_mdb_init(struct lan966x *lan966x);
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void lan966x_mdb_deinit(struct lan966x *lan966x);
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int lan966x_handle_port_mdb_add(struct lan966x_port *port,
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const struct switchdev_obj *obj);
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int lan966x_handle_port_mdb_del(struct lan966x_port *port,
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const struct switchdev_obj *obj);
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void lan966x_mdb_erase_entries(struct lan966x *lan966x, u16 vid);
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void lan966x_mdb_write_entries(struct lan966x *lan966x, u16 vid);
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void lan966x_mdb_clear_entries(struct lan966x *lan966x);
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void lan966x_mdb_restore_entries(struct lan966x *lan966x);
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int lan966x_ptp_init(struct lan966x *lan966x);
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void lan966x_ptp_deinit(struct lan966x *lan966x);
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int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr);
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int lan966x_ptp_hwtstamp_get(struct lan966x_port *port, struct ifreq *ifr);
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void lan966x_ptp_rxtstamp(struct lan966x *lan966x, struct sk_buff *skb,
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u64 timestamp);
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int lan966x_ptp_txtstamp_request(struct lan966x_port *port,
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struct sk_buff *skb);
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void lan966x_ptp_txtstamp_release(struct lan966x_port *port,
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struct sk_buff *skb);
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irqreturn_t lan966x_ptp_irq_handler(int irq, void *args);
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static inline void __iomem *lan_addr(void __iomem *base[],
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int id, int tinst, int tcnt,
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int gbase, int ginst,
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int gcnt, int gwidth,
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int raddr, int rinst,
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int rcnt, int rwidth)
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{
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WARN_ON((tinst) >= tcnt);
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WARN_ON((ginst) >= gcnt);
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WARN_ON((rinst) >= rcnt);
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return base[id + (tinst)] +
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gbase + ((ginst) * gwidth) +
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raddr + ((rinst) * rwidth);
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}
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static inline u32 lan_rd(struct lan966x *lan966x, int id, int tinst, int tcnt,
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int gbase, int ginst, int gcnt, int gwidth,
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int raddr, int rinst, int rcnt, int rwidth)
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{
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return readl(lan_addr(lan966x->regs, id, tinst, tcnt, gbase, ginst,
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gcnt, gwidth, raddr, rinst, rcnt, rwidth));
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}
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static inline void lan_wr(u32 val, struct lan966x *lan966x,
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int id, int tinst, int tcnt,
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int gbase, int ginst, int gcnt, int gwidth,
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int raddr, int rinst, int rcnt, int rwidth)
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{
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writel(val, lan_addr(lan966x->regs, id, tinst, tcnt,
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gbase, ginst, gcnt, gwidth,
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raddr, rinst, rcnt, rwidth));
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}
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static inline void lan_rmw(u32 val, u32 mask, struct lan966x *lan966x,
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int id, int tinst, int tcnt,
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int gbase, int ginst, int gcnt, int gwidth,
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int raddr, int rinst, int rcnt, int rwidth)
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{
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u32 nval;
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nval = readl(lan_addr(lan966x->regs, id, tinst, tcnt, gbase, ginst,
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gcnt, gwidth, raddr, rinst, rcnt, rwidth));
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nval = (nval & ~mask) | (val & mask);
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writel(nval, lan_addr(lan966x->regs, id, tinst, tcnt, gbase, ginst,
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gcnt, gwidth, raddr, rinst, rcnt, rwidth));
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}
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#endif /* __LAN966X_MAIN_H__ */
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