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Commit d4c41139 authored by Kristoffer Glembo's avatar Kristoffer Glembo Committed by David S. Miller
Browse files

net: Add Aeroflex Gaisler 10/100/1G Ethernet MAC driver 



Adds device driver for Aeroflex Gaisler 10/100 and 10/100/1G Ethernet
MAC IP cores.

Signed-off-by: default avatarKristoffer Glembo <kristoffer@gaisler.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b6ca4305

MAINTAINERS

+6 −0
Original line number Diff line number Diff line
@@ -2373,6 +2373,12 @@ F: Documentation/isdn/README.gigaset 
F:	drivers/isdn/gigaset/

F:	include/linux/gigaset_dev.h



GRETH 10/100/1G Ethernet MAC device driver

M:	Kristoffer Glembo <kristoffer@gaisler.com>

L:	netdev@vger.kernel.org

S:	Maintained

F:	drivers/net/greth*



HARD DRIVE ACTIVE PROTECTION SYSTEM (HDAPS) DRIVER

M:	Frank Seidel <frank@f-seidel.de>

L:	lm-sensors@lm-sensors.org

drivers/net/Kconfig

+8 −0
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@@ -995,6 +995,14 @@ config ETHOC 
	help

	  Say Y here if you want to use the OpenCores 10/100 Mbps Ethernet MAC.



config GRETH

	tristate "Aeroflex Gaisler GRETH Ethernet MAC support"

	depends on OF

	select PHYLIB

	select CRC32

	help

	  Say Y here if you want to use the Aeroflex Gaisler GRETH Ethernet MAC.



config SMC911X

	tristate "SMSC LAN911[5678] support"

	select CRC32

drivers/net/Makefile

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@@ -250,6 +250,7 @@ pasemi_mac_driver-objs := pasemi_mac.o pasemi_mac_ethtool.o 
obj-$(CONFIG_MLX4_CORE) += mlx4/

obj-$(CONFIG_ENC28J60) += enc28j60.o

obj-$(CONFIG_ETHOC) += ethoc.o

obj-$(CONFIG_GRETH) += greth.o



obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o

drivers/net/greth.c

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+1645 −0

File added.

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drivers/net/greth.h

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#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_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_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



/* Flags */

#define GRETH_FLAG_RX_CSUM 0x1



/* 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_next;

	u16 tx_last;

	u16 tx_free;

	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 of_device->dev */

	struct net_device *netdev;

	struct napi_struct napi;

	spinlock_t devlock;



	struct phy_device *phy;

	struct mii_bus *mdio;

	int mdio_irqs[PHY_MAX_ADDR];

	unsigned int link;

	unsigned int speed;

	unsigned int duplex;



	u32 msg_enable;

	u32 flags;



	u8 phyaddr;

	u8 multicast;

	u8 gbit_mac;

	u8 mdio_int_en;

	u8 edcl;

};



#endif