mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-15 01:17:39 +00:00
c2b7da5522
GRETH is an Ethernet 10/100 or 10/100/1000 MAC with out without a debug link (EDCL). The GRETH core is documented in GRIP.pdf available at www.gaisler.com. If the GRETH has GigaBit support (GBIT, Scatter gather, checksum offloading etc.) can be determined by a bit in the control register. The GBIT MAC is supported by operating in GRTEH 10/100 legacy mode. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
97 lines
3 KiB
C
97 lines
3 KiB
C
/* Gaisler.com GRETH 10/100/1000 Ethernet MAC driver
|
|
*
|
|
* (C) Copyright 2007
|
|
* Daniel Hellstrom, Gaisler Research, daniel@gaisler.com
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#define GRETH_FD 0x10
|
|
#define GRETH_RESET 0x40
|
|
#define GRETH_MII_BUSY 0x8
|
|
#define GRETH_MII_NVALID 0x10
|
|
|
|
/* MII registers */
|
|
#define GRETH_MII_EXTADV_1000FD 0x00000200
|
|
#define GRETH_MII_EXTADV_1000HD 0x00000100
|
|
#define GRETH_MII_EXTPRT_1000FD 0x00000800
|
|
#define GRETH_MII_EXTPRT_1000HD 0x00000400
|
|
|
|
#define GRETH_MII_100T4 0x00000200
|
|
#define GRETH_MII_100TXFD 0x00000100
|
|
#define GRETH_MII_100TXHD 0x00000080
|
|
#define GRETH_MII_10FD 0x00000040
|
|
#define GRETH_MII_10HD 0x00000020
|
|
|
|
#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_ERR_LC 0x10000
|
|
#define GRETH_TXBD_ERR_UE 0x4000
|
|
#define GRETH_TXBD_ERR_AL 0x8000
|
|
#define GRETH_TXBD_NUM 128
|
|
#define GRETH_TXBD_NUM_MASK (GRETH_TXBD_NUM-1)
|
|
#define GRETH_TX_BUF_SIZE 2048
|
|
|
|
#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_DEC 0x80000
|
|
#define GRETH_RXBD_IP_CSERR 0x100000
|
|
#define GRETH_RXBD_UDP_DEC 0x200000
|
|
#define GRETH_RXBD_UDP_CSERR 0x400000
|
|
#define GRETH_RXBD_TCP_DEC 0x800000
|
|
#define GRETH_RXBD_TCP_CSERR 0x1000000
|
|
|
|
#define GRETH_RXBD_NUM 128
|
|
#define GRETH_RXBD_NUM_MASK (GRETH_RXBD_NUM-1)
|
|
#define GRETH_RX_BUF_SIZE 2048
|
|
|
|
/* Ethernet configuration registers */
|
|
typedef struct _greth_regs {
|
|
volatile unsigned int control;
|
|
volatile unsigned int status;
|
|
volatile unsigned int esa_msb;
|
|
volatile unsigned int esa_lsb;
|
|
volatile unsigned int mdio;
|
|
volatile unsigned int tx_desc_p;
|
|
volatile unsigned int rx_desc_p;
|
|
} greth_regs;
|
|
|
|
/* Ethernet buffer descriptor */
|
|
typedef struct _greth_bd {
|
|
volatile unsigned int stat;
|
|
unsigned int addr; /* Buffer address not changed by HW */
|
|
} greth_bd;
|