120 lines
3 KiB
C
120 lines
3 KiB
C
/*
|
|
* Applied Micro X-Gene SoC Ethernet v2 Driver
|
|
*
|
|
* Copyright (c) 2017, Applied Micro Circuits Corporation
|
|
* Author(s): Iyappan Subramanian <isubramanian@apm.com>
|
|
* Keyur Chudgar <kchudgar@apm.com>
|
|
*
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __XGENE_ENET_V2_RING_H__
|
|
#define __XGENE_ENET_V2_RING_H__
|
|
|
|
#define XGENE_ENET_DESC_SIZE 64
|
|
#define XGENE_ENET_NUM_DESC 256
|
|
#define NUM_BUFS 8
|
|
#define SLOT_EMPTY 0xfff
|
|
|
|
#define DMATXCTRL 0xa180
|
|
#define DMATXDESCL 0xa184
|
|
#define DMATXDESCH 0xa1a0
|
|
#define DMATXSTATUS 0xa188
|
|
#define DMARXCTRL 0xa18c
|
|
#define DMARXDESCL 0xa190
|
|
#define DMARXDESCH 0xa1a4
|
|
#define DMARXSTATUS 0xa194
|
|
#define DMAINTRMASK 0xa198
|
|
#define DMAINTERRUPT 0xa19c
|
|
|
|
#define D_POS 62
|
|
#define D_LEN 2
|
|
#define E_POS 63
|
|
#define E_LEN 1
|
|
#define PKT_ADDRL_POS 0
|
|
#define PKT_ADDRL_LEN 32
|
|
#define PKT_ADDRH_POS 32
|
|
#define PKT_ADDRH_LEN 10
|
|
#define PKT_SIZE_POS 32
|
|
#define PKT_SIZE_LEN 12
|
|
#define NEXT_DESC_ADDRL_POS 0
|
|
#define NEXT_DESC_ADDRL_LEN 32
|
|
#define NEXT_DESC_ADDRH_POS 48
|
|
#define NEXT_DESC_ADDRH_LEN 10
|
|
|
|
#define TXPKTCOUNT_POS 16
|
|
#define TXPKTCOUNT_LEN 8
|
|
#define RXPKTCOUNT_POS 16
|
|
#define RXPKTCOUNT_LEN 8
|
|
|
|
#define TX_PKT_SENT BIT(0)
|
|
#define TX_BUS_ERROR BIT(3)
|
|
#define RX_PKT_RCVD BIT(4)
|
|
#define RX_BUS_ERROR BIT(7)
|
|
#define RXSTATUS_RXPKTRCVD BIT(0)
|
|
|
|
struct xge_raw_desc {
|
|
__le64 m0;
|
|
__le64 m1;
|
|
__le64 m2;
|
|
__le64 m3;
|
|
__le64 m4;
|
|
__le64 m5;
|
|
__le64 m6;
|
|
__le64 m7;
|
|
};
|
|
|
|
struct pkt_info {
|
|
struct sk_buff *skb;
|
|
dma_addr_t dma_addr;
|
|
void *pkt_buf;
|
|
};
|
|
|
|
/* software context of a descriptor ring */
|
|
struct xge_desc_ring {
|
|
struct net_device *ndev;
|
|
dma_addr_t dma_addr;
|
|
u8 head;
|
|
u8 tail;
|
|
union {
|
|
void *desc_addr;
|
|
struct xge_raw_desc *raw_desc;
|
|
};
|
|
struct pkt_info (*pkt_info);
|
|
};
|
|
|
|
static inline u64 xge_set_desc_bits(int pos, int len, u64 val)
|
|
{
|
|
return (val & ((1ULL << len) - 1)) << pos;
|
|
}
|
|
|
|
static inline u64 xge_get_desc_bits(int pos, int len, u64 src)
|
|
{
|
|
return (src >> pos) & ((1ULL << len) - 1);
|
|
}
|
|
|
|
#define SET_BITS(field, val) \
|
|
xge_set_desc_bits(field ## _POS, field ## _LEN, val)
|
|
|
|
#define GET_BITS(field, src) \
|
|
xge_get_desc_bits(field ## _POS, field ## _LEN, src)
|
|
|
|
void xge_setup_desc(struct xge_desc_ring *ring);
|
|
void xge_update_tx_desc_addr(struct xge_pdata *pdata);
|
|
void xge_update_rx_desc_addr(struct xge_pdata *pdata);
|
|
void xge_intr_enable(struct xge_pdata *pdata);
|
|
void xge_intr_disable(struct xge_pdata *pdata);
|
|
|
|
#endif /* __XGENE_ENET_V2_RING_H__ */
|