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linux-zen-server/drivers/net/ethernet/broadcom/bcm63xx_enet.h

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2023-08-30 17:53:23 +02:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BCM63XX_ENET_H_
#define BCM63XX_ENET_H_
#include <linux/types.h>
#include <linux/mii.h>
#include <linux/mutex.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>
#include <bcm63xx_iudma.h>
/* default number of descriptor */
#define BCMENET_DEF_RX_DESC 64
#define BCMENET_DEF_TX_DESC 32
/* maximum burst len for dma (4 bytes unit) */
#define BCMENET_DMA_MAXBURST 16
#define BCMENETSW_DMA_MAXBURST 8
/* tx transmit threshold (4 bytes unit), fifo is 256 bytes, the value
* must be low enough so that a DMA transfer of above burst length can
* not overflow the fifo */
#define BCMENET_TX_FIFO_TRESH 32
/*
* hardware maximum rx/tx packet size including FCS, max mtu is
* actually 2047, but if we set max rx size register to 2047 we won't
* get overflow information if packet size is 2048 or above
*/
#define BCMENET_MAX_MTU 2046
/*
* MIB Counters register definitions
*/
#define ETH_MIB_TX_GD_OCTETS 0
#define ETH_MIB_TX_GD_PKTS 1
#define ETH_MIB_TX_ALL_OCTETS 2
#define ETH_MIB_TX_ALL_PKTS 3
#define ETH_MIB_TX_BRDCAST 4
#define ETH_MIB_TX_MULT 5
#define ETH_MIB_TX_64 6
#define ETH_MIB_TX_65_127 7
#define ETH_MIB_TX_128_255 8
#define ETH_MIB_TX_256_511 9
#define ETH_MIB_TX_512_1023 10
#define ETH_MIB_TX_1024_MAX 11
#define ETH_MIB_TX_JAB 12
#define ETH_MIB_TX_OVR 13
#define ETH_MIB_TX_FRAG 14
#define ETH_MIB_TX_UNDERRUN 15
#define ETH_MIB_TX_COL 16
#define ETH_MIB_TX_1_COL 17
#define ETH_MIB_TX_M_COL 18
#define ETH_MIB_TX_EX_COL 19
#define ETH_MIB_TX_LATE 20
#define ETH_MIB_TX_DEF 21
#define ETH_MIB_TX_CRS 22
#define ETH_MIB_TX_PAUSE 23
#define ETH_MIB_RX_GD_OCTETS 32
#define ETH_MIB_RX_GD_PKTS 33
#define ETH_MIB_RX_ALL_OCTETS 34
#define ETH_MIB_RX_ALL_PKTS 35
#define ETH_MIB_RX_BRDCAST 36
#define ETH_MIB_RX_MULT 37
#define ETH_MIB_RX_64 38
#define ETH_MIB_RX_65_127 39
#define ETH_MIB_RX_128_255 40
#define ETH_MIB_RX_256_511 41
#define ETH_MIB_RX_512_1023 42
#define ETH_MIB_RX_1024_MAX 43
#define ETH_MIB_RX_JAB 44
#define ETH_MIB_RX_OVR 45
#define ETH_MIB_RX_FRAG 46
#define ETH_MIB_RX_DROP 47
#define ETH_MIB_RX_CRC_ALIGN 48
#define ETH_MIB_RX_UND 49
#define ETH_MIB_RX_CRC 50
#define ETH_MIB_RX_ALIGN 51
#define ETH_MIB_RX_SYM 52
#define ETH_MIB_RX_PAUSE 53
#define ETH_MIB_RX_CNTRL 54
/*
* SW MIB Counters register definitions
*/
#define ETHSW_MIB_TX_ALL_OCT 0
#define ETHSW_MIB_TX_DROP_PKTS 2
#define ETHSW_MIB_TX_QOS_PKTS 3
#define ETHSW_MIB_TX_BRDCAST 4
#define ETHSW_MIB_TX_MULT 5
#define ETHSW_MIB_TX_UNI 6
#define ETHSW_MIB_TX_COL 7
#define ETHSW_MIB_TX_1_COL 8
#define ETHSW_MIB_TX_M_COL 9
#define ETHSW_MIB_TX_DEF 10
#define ETHSW_MIB_TX_LATE 11
#define ETHSW_MIB_TX_EX_COL 12
#define ETHSW_MIB_TX_PAUSE 14
#define ETHSW_MIB_TX_QOS_OCT 15
#define ETHSW_MIB_RX_ALL_OCT 17
#define ETHSW_MIB_RX_UND 19
#define ETHSW_MIB_RX_PAUSE 20
#define ETHSW_MIB_RX_64 21
#define ETHSW_MIB_RX_65_127 22
#define ETHSW_MIB_RX_128_255 23
#define ETHSW_MIB_RX_256_511 24
#define ETHSW_MIB_RX_512_1023 25
#define ETHSW_MIB_RX_1024_1522 26
#define ETHSW_MIB_RX_OVR 27
#define ETHSW_MIB_RX_JAB 28
#define ETHSW_MIB_RX_ALIGN 29
#define ETHSW_MIB_RX_CRC 30
#define ETHSW_MIB_RX_GD_OCT 31
#define ETHSW_MIB_RX_DROP 33
#define ETHSW_MIB_RX_UNI 34
#define ETHSW_MIB_RX_MULT 35
#define ETHSW_MIB_RX_BRDCAST 36
#define ETHSW_MIB_RX_SA_CHANGE 37
#define ETHSW_MIB_RX_FRAG 38
#define ETHSW_MIB_RX_OVR_DISC 39
#define ETHSW_MIB_RX_SYM 40
#define ETHSW_MIB_RX_QOS_PKTS 41
#define ETHSW_MIB_RX_QOS_OCT 42
#define ETHSW_MIB_RX_1523_2047 44
#define ETHSW_MIB_RX_2048_4095 45
#define ETHSW_MIB_RX_4096_8191 46
#define ETHSW_MIB_RX_8192_9728 47
struct bcm_enet_mib_counters {
u64 tx_gd_octets;
u32 tx_gd_pkts;
u32 tx_all_octets;
u32 tx_all_pkts;
u32 tx_unicast;
u32 tx_brdcast;
u32 tx_mult;
u32 tx_64;
u32 tx_65_127;
u32 tx_128_255;
u32 tx_256_511;
u32 tx_512_1023;
u32 tx_1024_max;
u32 tx_1523_2047;
u32 tx_2048_4095;
u32 tx_4096_8191;
u32 tx_8192_9728;
u32 tx_jab;
u32 tx_drop;
u32 tx_ovr;
u32 tx_frag;
u32 tx_underrun;
u32 tx_col;
u32 tx_1_col;
u32 tx_m_col;
u32 tx_ex_col;
u32 tx_late;
u32 tx_def;
u32 tx_crs;
u32 tx_pause;
u64 rx_gd_octets;
u32 rx_gd_pkts;
u32 rx_all_octets;
u32 rx_all_pkts;
u32 rx_brdcast;
u32 rx_unicast;
u32 rx_mult;
u32 rx_64;
u32 rx_65_127;
u32 rx_128_255;
u32 rx_256_511;
u32 rx_512_1023;
u32 rx_1024_max;
u32 rx_jab;
u32 rx_ovr;
u32 rx_frag;
u32 rx_drop;
u32 rx_crc_align;
u32 rx_und;
u32 rx_crc;
u32 rx_align;
u32 rx_sym;
u32 rx_pause;
u32 rx_cntrl;
};
struct bcm_enet_priv {
/* base remapped address of device */
void __iomem *base;
/* mac irq, rx_dma irq, tx_dma irq */
int irq;
int irq_rx;
int irq_tx;
/* hw view of rx & tx dma ring */
dma_addr_t rx_desc_dma;
dma_addr_t tx_desc_dma;
/* allocated size (in bytes) for rx & tx dma ring */
unsigned int rx_desc_alloc_size;
unsigned int tx_desc_alloc_size;
struct napi_struct napi;
/* dma channel id for rx */
int rx_chan;
/* number of dma desc in rx ring */
int rx_ring_size;
/* cpu view of rx dma ring */
struct bcm_enet_desc *rx_desc_cpu;
/* current number of armed descriptor given to hardware for rx */
int rx_desc_count;
/* next rx descriptor to fetch from hardware */
int rx_curr_desc;
/* next dirty rx descriptor to refill */
int rx_dirty_desc;
/* size of allocated rx buffers */
unsigned int rx_buf_size;
/* allocated rx buffer offset */
unsigned int rx_buf_offset;
/* size of allocated rx frag */
unsigned int rx_frag_size;
/* list of buffer given to hw for rx */
void **rx_buf;
/* used when rx skb allocation failed, so we defer rx queue
* refill */
struct timer_list rx_timeout;
/* lock rx_timeout against rx normal operation */
spinlock_t rx_lock;
/* dma channel id for tx */
int tx_chan;
/* number of dma desc in tx ring */
int tx_ring_size;
/* maximum dma burst size */
int dma_maxburst;
/* cpu view of rx dma ring */
struct bcm_enet_desc *tx_desc_cpu;
/* number of available descriptor for tx */
int tx_desc_count;
/* next tx descriptor avaiable */
int tx_curr_desc;
/* next dirty tx descriptor to reclaim */
int tx_dirty_desc;
/* list of skb given to hw for tx */
struct sk_buff **tx_skb;
/* lock used by tx reclaim and xmit */
spinlock_t tx_lock;
/* set if internal phy is ignored and external mii interface
* is selected */
int use_external_mii;
/* set if a phy is connected, phy address must be known,
* probing is not possible */
int has_phy;
int phy_id;
/* set if connected phy has an associated irq */
int has_phy_interrupt;
int phy_interrupt;
/* used when a phy is connected (phylib used) */
struct mii_bus *mii_bus;
int old_link;
int old_duplex;
int old_pause;
/* used when no phy is connected */
int force_speed_100;
int force_duplex_full;
/* pause parameters */
int pause_auto;
int pause_rx;
int pause_tx;
/* stats */
struct bcm_enet_mib_counters mib;
/* after mib interrupt, mib registers update is done in this
* work queue */
struct work_struct mib_update_task;
/* lock mib update between userspace request and workqueue */
struct mutex mib_update_lock;
/* mac clock */
struct clk *mac_clk;
/* phy clock if internal phy is used */
struct clk *phy_clk;
/* network device reference */
struct net_device *net_dev;
/* platform device reference */
struct platform_device *pdev;
/* maximum hardware transmit/receive size */
unsigned int hw_mtu;
bool enet_is_sw;
/* port mapping for switch devices */
int num_ports;
struct bcm63xx_enetsw_port used_ports[ENETSW_MAX_PORT];
int sw_port_link[ENETSW_MAX_PORT];
/* used to poll switch port state */
struct timer_list swphy_poll;
spinlock_t enetsw_mdio_lock;
/* dma channel enable mask */
u32 dma_chan_en_mask;
/* dma channel interrupt mask */
u32 dma_chan_int_mask;
/* DMA engine has internal SRAM */
bool dma_has_sram;
/* dma channel width */
unsigned int dma_chan_width;
/* dma descriptor shift value */
unsigned int dma_desc_shift;
};
#endif /* ! BCM63XX_ENET_H_ */