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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-03 02:40:27 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-03 02:40:27 +0300 |
commit | 8d65b08debc7e62b2c6032d7fe7389d895b92cbc (patch) | |
tree | 0c3141b60c3a03cc32742b5750c5e763b9dae489 /drivers/net/ethernet/apm/xgene-v2/ring.h | |
parent | 5a0387a8a8efb90ae7fea1e2e5c62de3efa74691 (diff) | |
parent | 5d15af6778b8e4ed1fd41b040283af278e7a9a72 (diff) | |
download | linux-8d65b08debc7e62b2c6032d7fe7389d895b92cbc.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Millar:
"Here are some highlights from the 2065 networking commits that
happened this development cycle:
1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)
2) Add a generic XDP driver, so that anyone can test XDP even if they
lack a networking device whose driver has explicit XDP support
(me).
3) Sparc64 now has an eBPF JIT too (me)
4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
Starovoitov)
5) Make netfitler network namespace teardown less expensive (Florian
Westphal)
6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)
7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)
8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)
9) Multiqueue support in stmmac driver (Joao Pinto)
10) Remove TCP timewait recycling, it never really could possibly work
well in the real world and timestamp randomization really zaps any
hint of usability this feature had (Soheil Hassas Yeganeh)
11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
Aleksandrov)
12) Add socket busy poll support to epoll (Sridhar Samudrala)
13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
and several others)
14) IPSEC hw offload infrastructure (Steffen Klassert)"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
tipc: refactor function tipc_sk_recv_stream()
tipc: refactor function tipc_sk_recvmsg()
net: thunderx: Optimize page recycling for XDP
net: thunderx: Support for XDP header adjustment
net: thunderx: Add support for XDP_TX
net: thunderx: Add support for XDP_DROP
net: thunderx: Add basic XDP support
net: thunderx: Cleanup receive buffer allocation
net: thunderx: Optimize CQE_TX handling
net: thunderx: Optimize RBDR descriptor handling
net: thunderx: Support for page recycling
ipx: call ipxitf_put() in ioctl error path
net: sched: add helpers to handle extended actions
qed*: Fix issues in the ptp filter config implementation.
qede: Fix concurrency issue in PTP Tx path processing.
stmmac: Add support for SIMATIC IOT2000 platform
net: hns: fix ethtool_get_strings overflow in hns driver
tcp: fix wraparound issue in tcp_lp
bpf, arm64: fix jit branch offset related to ldimm64
bpf, arm64: implement jiting of BPF_XADD
...
Diffstat (limited to 'drivers/net/ethernet/apm/xgene-v2/ring.h')
-rw-r--r-- | drivers/net/ethernet/apm/xgene-v2/ring.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/net/ethernet/apm/xgene-v2/ring.h b/drivers/net/ethernet/apm/xgene-v2/ring.h new file mode 100644 index 000000000000..abc8c9a84954 --- /dev/null +++ b/drivers/net/ethernet/apm/xgene-v2/ring.h @@ -0,0 +1,119 @@ +/* + * 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__ */ |