diff options
Diffstat (limited to 'arch/m68k/mach-mcfv4e/include/proc/fecbd.h')
-rw-r--r-- | arch/m68k/mach-mcfv4e/include/proc/fecbd.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/m68k/mach-mcfv4e/include/proc/fecbd.h b/arch/m68k/mach-mcfv4e/include/proc/fecbd.h new file mode 100644 index 0000000000..92195490c8 --- /dev/null +++ b/arch/m68k/mach-mcfv4e/include/proc/fecbd.h @@ -0,0 +1,115 @@ +/* + * Copyright (c) 2008 Carsten Schlote <c.schlote@konzeptpark.de> + * See file CREDITS for list of people who contributed to this project. + * + * This file is part of U-Boot V2. + * + * U-Boot V2 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 3 of the License, or + * (at your option) any later version. + * + * U-Boot V2 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 U-Boot V2. If not, see <http://www.gnu.org/licenses/>. + */ + +/** @file + * Provide a simple buffer management driver + */ + +#ifndef _FECBD_H_ +#define _FECBD_H_ + +/********************************************************************/ + +#define Rx 1 +#define Tx 0 + +/* + * Buffer sizes in bytes + */ +#ifndef RX_BUF_SZ +#define RX_BUF_SZ NBUF_SZ +#endif +#ifndef TX_BUF_SZ +#define TX_BUF_SZ NBUF_SZ +#endif + +/* + * Number of Rx and Tx Buffers and Buffer Descriptors + */ +#ifndef NRXBD +#define NRXBD 10 +#endif +#ifndef NTXBD +#define NTXBD 4 +#endif + +/* + * Buffer Descriptor Format + */ +typedef struct +{ + uint16_t status; /* control and status */ + uint16_t length; /* transfer length */ + uint8_t *data; /* buffer address */ +} FECBD; + +/* + * Bit level definitions for status field of buffer descriptors + */ +#define TX_BD_R 0x8000 +#define TX_BD_TO1 0x4000 +#define TX_BD_W 0x2000 +#define TX_BD_TO2 0x1000 +#define TX_BD_INTERRUPT 0x1000 /* MCF547x/8x Only */ +#define TX_BD_L 0x0800 +#define TX_BD_TC 0x0400 +#define TX_BD_DEF 0x0200 /* MCF5272 Only */ +#define TX_BD_ABC 0x0200 +#define TX_BD_HB 0x0100 /* MCF5272 Only */ +#define TX_BD_LC 0x0080 /* MCF5272 Only */ +#define TX_BD_RL 0x0040 /* MCF5272 Only */ +#define TX_BD_UN 0x0002 /* MCF5272 Only */ +#define TX_BD_CSL 0x0001 /* MCF5272 Only */ + +#define RX_BD_E 0x8000 +#define RX_BD_R01 0x4000 +#define RX_BD_W 0x2000 +#define RX_BD_R02 0x1000 +#define RX_BD_INTERRUPT 0x1000 /* MCF547x/8x Only */ +#define RX_BD_L 0x0800 +#define RX_BD_M 0x0100 +#define RX_BD_BC 0x0080 +#define RX_BD_MC 0x0040 +#define RX_BD_LG 0x0020 +#define RX_BD_NO 0x0010 +#define RX_BD_CR 0x0004 +#define RX_BD_OV 0x0002 +#define RX_BD_TR 0x0001 +#define RX_BD_ERROR (RX_BD_NO | RX_BD_CR | RX_BD_OV | RX_BD_TR) + +/* + * Functions provided in fec_bd.c + */ +void +fecbd_init(uint8_t); + +uint32_t +fecbd_get_start(uint8_t, uint8_t); + +FECBD * +fecbd_rx_alloc(uint8_t); + +FECBD * +fecbd_tx_alloc(uint8_t); + +FECBD * +fecbd_tx_free(uint8_t); + +#endif /* _FECBD_H_ */ |