cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/aeroflex/greth.h

#ifndef GRETH_H

#define GRETH_H

#include <linux/phy.h>

/* Register bits and masks */

#define GRETH_RESET 0x40

#define GRETH_MII_BUSY 0x8

#define GRETH_MII_NVALID 0x10


#define GRETH_CTRL_FD         0x10

#define GRETH_CTRL_PR         0x20

#define GRETH_CTRL_SP         0x80

#define GRETH_CTRL_GB         0x100

#define GRETH_CTRL_PSTATIEN   0x400

#define GRETH_CTRL_MCEN       0x800

#define GRETH_CTRL_DISDUPLEX  0x1000

#define GRETH_STATUS_PHYSTAT  0x100


#define GRETH_BD_EN 0x800

#define GRETH_BD_WR 0x1000

#define GRETH_BD_IE 0x2000

#define GRETH_BD_LEN 0x7FF


#define GRETH_TXEN 0x1

#define GRETH_INT_TE 0x2

#define GRETH_INT_TX 0x8

#define GRETH_TXI 0x4

#define GRETH_TXBD_STATUS 0x0001C000

#define GRETH_TXBD_MORE 0x20000

#define GRETH_TXBD_IPCS 0x40000

#define GRETH_TXBD_TCPCS 0x80000

#define GRETH_TXBD_UDPCS 0x100000

#define GRETH_TXBD_CSALL (GRETH_TXBD_IPCS | GRETH_TXBD_TCPCS | GRETH_TXBD_UDPCS)

#define GRETH_TXBD_ERR_LC 0x10000

#define GRETH_TXBD_ERR_UE 0x4000

#define GRETH_TXBD_ERR_AL 0x8000


#define GRETH_INT_RE         0x1

#define GRETH_INT_RX         0x4

#define GRETH_RXEN           0x2

#define GRETH_RXI            0x8

#define GRETH_RXBD_STATUS    0xFFFFC000

#define GRETH_RXBD_ERR_AE    0x4000

#define GRETH_RXBD_ERR_FT    0x8000

#define GRETH_RXBD_ERR_CRC   0x10000

#define GRETH_RXBD_ERR_OE    0x20000

#define GRETH_RXBD_ERR_LE    0x40000

#define GRETH_RXBD_IP        0x80000

#define GRETH_RXBD_IP_CSERR  0x100000

#define GRETH_RXBD_UDP       0x200000

#define GRETH_RXBD_UDP_CSERR 0x400000

#define GRETH_RXBD_TCP       0x800000

#define GRETH_RXBD_TCP_CSERR 0x1000000

#define GRETH_RXBD_IP_FRAG   0x2000000

#define GRETH_RXBD_MCAST     0x4000000

/* Descriptor parameters */

#define GRETH_TXBD_NUM 128

#define GRETH_TXBD_NUM_MASK (GRETH_TXBD_NUM-1)

#define GRETH_TX_BUF_SIZE 2048

#define GRETH_RXBD_NUM 128

#define GRETH_RXBD_NUM_MASK (GRETH_RXBD_NUM-1)

#define GRETH_RX_BUF_SIZE 2048

/* Buffers per page */

#define GRETH_RX_BUF_PPGAE	(PAGE_SIZE/GRETH_RX_BUF_SIZE)

#define GRETH_TX_BUF_PPGAE	(PAGE_SIZE/GRETH_TX_BUF_SIZE)

/* How many pages are needed for buffers */

#define GRETH_RX_BUF_PAGE_NUM	(GRETH_RXBD_NUM/GRETH_RX_BUF_PPGAE)

#define GRETH_TX_BUF_PAGE_NUM	(GRETH_TXBD_NUM/GRETH_TX_BUF_PPGAE)

/* Buffer size.
 * Gbit MAC uses tagged maximum frame size which is 1518 excluding CRC.
 * Set to 1520 to make all buffers word aligned for non-gbit MAC.
 */

#define MAX_FRAME_SIZE		1520

/* GRETH APB registers */

struct greth_regs {
	
u32 control;
	
u32 status;
	
u32 esa_msb;
	
u32 esa_lsb;
	
u32 mdio;
	
u32 tx_desc_p;
	
u32 rx_desc_p;
	
u32 edclip;
	
u32 hash_msb;
	
u32 hash_lsb;
};

/* GRETH buffer descriptor */

struct greth_bd {
	
u32 stat;
	
u32 addr;
};


struct greth_private {
	
struct sk_buff *rx_skbuff[GRETH_RXBD_NUM];
	
struct sk_buff *tx_skbuff[GRETH_TXBD_NUM];

	
unsigned char *tx_bufs[GRETH_TXBD_NUM];
	
unsigned char *rx_bufs[GRETH_RXBD_NUM];
	
u16 tx_bufs_length[GRETH_TXBD_NUM];

	
u16 tx_next;
	
u16 tx_last;
	
u16 tx_free; /* only used on 10/100Mbit */
	
u16 rx_cur;

	
struct greth_regs *regs;	/* Address of controller registers. */
	
struct greth_bd *rx_bd_base;	/* Address of Rx BDs. */
	
struct greth_bd *tx_bd_base;	/* Address of Tx BDs. */
	
dma_addr_t rx_bd_base_phys;
	
dma_addr_t tx_bd_base_phys;

	
int irq;

	
struct device *dev;	        /* Pointer to platform_device->dev */
	
struct net_device *netdev;
	
struct napi_struct napi;
	
spinlock_t devlock;

	
struct mii_bus *mdio;
	
unsigned int link;
	
unsigned int speed;
	
unsigned int duplex;

	
u32 msg_enable;

	
u8 phyaddr;
	
u8 multicast;
	
u8 gbit_mac;
	
u8 mdio_int_en;
	
u8 edcl;
};

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Kristoffer Glembo41296.26%120.00%
Daniel Hellstrom153.50%360.00%
Grant C. Likely10.23%120.00%
Total428100.00%5100.00%
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