303 lines
6.6 KiB
C
303 lines
6.6 KiB
C
#ifndef BCM63XX_ENET_H_
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#define BCM63XX_ENET_H_
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#include <linux/types.h>
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#include <linux/mii.h>
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#include <linux/mutex.h>
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#include <linux/phy.h>
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#include <linux/platform_device.h>
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#include <bcm63xx_regs.h>
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#include <bcm63xx_irq.h>
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#include <bcm63xx_io.h>
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/* default number of descriptor */
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#define BCMENET_DEF_RX_DESC 64
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#define BCMENET_DEF_TX_DESC 32
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/* maximum burst len for dma (4 bytes unit) */
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#define BCMENET_DMA_MAXBURST 16
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/* tx transmit threshold (4 bytes unit), fifo is 256 bytes, the value
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* must be low enough so that a DMA transfer of above burst length can
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* not overflow the fifo */
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#define BCMENET_TX_FIFO_TRESH 32
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/*
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* hardware maximum rx/tx packet size including FCS, max mtu is
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* actually 2047, but if we set max rx size register to 2047 we won't
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* get overflow information if packet size is 2048 or above
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*/
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#define BCMENET_MAX_MTU 2046
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/*
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* rx/tx dma descriptor
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*/
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struct bcm_enet_desc {
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u32 len_stat;
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u32 address;
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};
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#define DMADESC_LENGTH_SHIFT 16
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#define DMADESC_LENGTH_MASK (0xfff << DMADESC_LENGTH_SHIFT)
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#define DMADESC_OWNER_MASK (1 << 15)
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#define DMADESC_EOP_MASK (1 << 14)
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#define DMADESC_SOP_MASK (1 << 13)
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#define DMADESC_ESOP_MASK (DMADESC_EOP_MASK | DMADESC_SOP_MASK)
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#define DMADESC_WRAP_MASK (1 << 12)
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#define DMADESC_UNDER_MASK (1 << 9)
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#define DMADESC_APPEND_CRC (1 << 8)
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#define DMADESC_OVSIZE_MASK (1 << 4)
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#define DMADESC_RXER_MASK (1 << 2)
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#define DMADESC_CRC_MASK (1 << 1)
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#define DMADESC_OV_MASK (1 << 0)
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#define DMADESC_ERR_MASK (DMADESC_UNDER_MASK | \
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DMADESC_OVSIZE_MASK | \
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DMADESC_RXER_MASK | \
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DMADESC_CRC_MASK | \
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DMADESC_OV_MASK)
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/*
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* MIB Counters register definitions
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*/
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#define ETH_MIB_TX_GD_OCTETS 0
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#define ETH_MIB_TX_GD_PKTS 1
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#define ETH_MIB_TX_ALL_OCTETS 2
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#define ETH_MIB_TX_ALL_PKTS 3
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#define ETH_MIB_TX_BRDCAST 4
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#define ETH_MIB_TX_MULT 5
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#define ETH_MIB_TX_64 6
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#define ETH_MIB_TX_65_127 7
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#define ETH_MIB_TX_128_255 8
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#define ETH_MIB_TX_256_511 9
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#define ETH_MIB_TX_512_1023 10
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#define ETH_MIB_TX_1024_MAX 11
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#define ETH_MIB_TX_JAB 12
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#define ETH_MIB_TX_OVR 13
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#define ETH_MIB_TX_FRAG 14
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#define ETH_MIB_TX_UNDERRUN 15
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#define ETH_MIB_TX_COL 16
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#define ETH_MIB_TX_1_COL 17
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#define ETH_MIB_TX_M_COL 18
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#define ETH_MIB_TX_EX_COL 19
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#define ETH_MIB_TX_LATE 20
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#define ETH_MIB_TX_DEF 21
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#define ETH_MIB_TX_CRS 22
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#define ETH_MIB_TX_PAUSE 23
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#define ETH_MIB_RX_GD_OCTETS 32
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#define ETH_MIB_RX_GD_PKTS 33
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#define ETH_MIB_RX_ALL_OCTETS 34
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#define ETH_MIB_RX_ALL_PKTS 35
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#define ETH_MIB_RX_BRDCAST 36
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#define ETH_MIB_RX_MULT 37
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#define ETH_MIB_RX_64 38
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#define ETH_MIB_RX_65_127 39
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#define ETH_MIB_RX_128_255 40
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#define ETH_MIB_RX_256_511 41
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#define ETH_MIB_RX_512_1023 42
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#define ETH_MIB_RX_1024_MAX 43
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#define ETH_MIB_RX_JAB 44
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#define ETH_MIB_RX_OVR 45
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#define ETH_MIB_RX_FRAG 46
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#define ETH_MIB_RX_DROP 47
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#define ETH_MIB_RX_CRC_ALIGN 48
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#define ETH_MIB_RX_UND 49
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#define ETH_MIB_RX_CRC 50
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#define ETH_MIB_RX_ALIGN 51
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#define ETH_MIB_RX_SYM 52
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#define ETH_MIB_RX_PAUSE 53
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#define ETH_MIB_RX_CNTRL 54
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struct bcm_enet_mib_counters {
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u64 tx_gd_octets;
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u32 tx_gd_pkts;
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u32 tx_all_octets;
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u32 tx_all_pkts;
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u32 tx_brdcast;
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u32 tx_mult;
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u32 tx_64;
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u32 tx_65_127;
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u32 tx_128_255;
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u32 tx_256_511;
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u32 tx_512_1023;
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u32 tx_1024_max;
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u32 tx_jab;
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u32 tx_ovr;
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u32 tx_frag;
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u32 tx_underrun;
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u32 tx_col;
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u32 tx_1_col;
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u32 tx_m_col;
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u32 tx_ex_col;
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u32 tx_late;
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u32 tx_def;
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u32 tx_crs;
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u32 tx_pause;
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u64 rx_gd_octets;
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u32 rx_gd_pkts;
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u32 rx_all_octets;
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u32 rx_all_pkts;
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u32 rx_brdcast;
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u32 rx_mult;
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u32 rx_64;
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u32 rx_65_127;
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u32 rx_128_255;
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u32 rx_256_511;
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u32 rx_512_1023;
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u32 rx_1024_max;
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u32 rx_jab;
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u32 rx_ovr;
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u32 rx_frag;
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u32 rx_drop;
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u32 rx_crc_align;
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u32 rx_und;
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u32 rx_crc;
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u32 rx_align;
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u32 rx_sym;
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u32 rx_pause;
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u32 rx_cntrl;
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};
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struct bcm_enet_priv {
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/* mac id (from platform device id) */
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int mac_id;
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/* base remapped address of device */
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void __iomem *base;
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/* mac irq, rx_dma irq, tx_dma irq */
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int irq;
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int irq_rx;
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int irq_tx;
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/* hw view of rx & tx dma ring */
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dma_addr_t rx_desc_dma;
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dma_addr_t tx_desc_dma;
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/* allocated size (in bytes) for rx & tx dma ring */
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unsigned int rx_desc_alloc_size;
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unsigned int tx_desc_alloc_size;
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struct napi_struct napi;
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/* dma channel id for rx */
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int rx_chan;
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/* number of dma desc in rx ring */
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int rx_ring_size;
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/* cpu view of rx dma ring */
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struct bcm_enet_desc *rx_desc_cpu;
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/* current number of armed descriptor given to hardware for rx */
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int rx_desc_count;
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/* next rx descriptor to fetch from hardware */
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int rx_curr_desc;
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/* next dirty rx descriptor to refill */
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int rx_dirty_desc;
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/* size of allocated rx skbs */
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unsigned int rx_skb_size;
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/* list of skb given to hw for rx */
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struct sk_buff **rx_skb;
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/* used when rx skb allocation failed, so we defer rx queue
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* refill */
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struct timer_list rx_timeout;
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/* lock rx_timeout against rx normal operation */
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spinlock_t rx_lock;
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/* dma channel id for tx */
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int tx_chan;
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/* number of dma desc in tx ring */
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int tx_ring_size;
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/* cpu view of rx dma ring */
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struct bcm_enet_desc *tx_desc_cpu;
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/* number of available descriptor for tx */
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int tx_desc_count;
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/* next tx descriptor avaiable */
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int tx_curr_desc;
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/* next dirty tx descriptor to reclaim */
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int tx_dirty_desc;
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/* list of skb given to hw for tx */
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struct sk_buff **tx_skb;
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/* lock used by tx reclaim and xmit */
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spinlock_t tx_lock;
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/* set if internal phy is ignored and external mii interface
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* is selected */
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int use_external_mii;
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/* set if a phy is connected, phy address must be known,
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* probing is not possible */
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int has_phy;
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int phy_id;
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/* set if connected phy has an associated irq */
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int has_phy_interrupt;
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int phy_interrupt;
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/* used when a phy is connected (phylib used) */
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struct mii_bus *mii_bus;
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struct phy_device *phydev;
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int old_link;
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int old_duplex;
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int old_pause;
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/* used when no phy is connected */
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int force_speed_100;
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int force_duplex_full;
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/* pause parameters */
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int pause_auto;
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int pause_rx;
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int pause_tx;
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/* stats */
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struct bcm_enet_mib_counters mib;
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/* after mib interrupt, mib registers update is done in this
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* work queue */
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struct work_struct mib_update_task;
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/* lock mib update between userspace request and workqueue */
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struct mutex mib_update_lock;
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/* mac clock */
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struct clk *mac_clk;
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/* phy clock if internal phy is used */
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struct clk *phy_clk;
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/* network device reference */
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struct net_device *net_dev;
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/* platform device reference */
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struct platform_device *pdev;
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/* maximum hardware transmit/receive size */
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unsigned int hw_mtu;
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};
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#endif /* ! BCM63XX_ENET_H_ */
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