/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _IF_ALCVAR_H
#define _IF_ALCVAR_H
#define ALC_TX_RING_CNT 256
#define ALC_TX_RING_ALIGN sizeof(struct tx_desc)
#define ALC_RX_RING_CNT 256
#define ALC_RX_RING_ALIGN sizeof(struct rx_desc)
#define ALC_RX_BUF_ALIGN 4
#define ALC_RR_RING_CNT ALC_RX_RING_CNT
#define ALC_RR_RING_ALIGN sizeof(struct rx_rdesc)
#define ALC_CMB_ALIGN 8
#define ALC_SMB_ALIGN 8
#define ALC_TSO_MAXSEGSIZE 4096
#define ALC_TSO_MAXSIZE (65535 + sizeof(struct ether_vlan_header))
#define ALC_MAXTXSEGS 35
#define ALC_ADDR_LO(x) ((uint64_t) (x) & 0xFFFFFFFF)
#define ALC_ADDR_HI(x) ((uint64_t) (x) >> 32)
#define ALC_DESC_INC(x, y) ((x) = ((x) + 1) % (y))
/* Water mark to kick reclaiming Tx buffers. */
#define ALC_TX_DESC_HIWAT ((ALC_TX_RING_CNT * 6) / 10)
/*
* AR816x controllers support up to 16 messages but this driver
* uses single message.
*/
#define ALC_MSI_MESSAGES 1
#define ALC_MSIX_MESSAGES 1
#define ALC_TX_RING_SZ \
(sizeof(struct tx_desc) * ALC_TX_RING_CNT)
#define ALC_RX_RING_SZ \
(sizeof(struct rx_desc) * ALC_RX_RING_CNT)
#define ALC_RR_RING_SZ \
(sizeof(struct rx_rdesc) * ALC_RR_RING_CNT)
#define ALC_CMB_SZ (sizeof(struct cmb))
#define ALC_SMB_SZ (sizeof(struct smb))
#define ALC_PROC_MIN 16
#define ALC_PROC_MAX (ALC_RX_RING_CNT - 1)
#define ALC_PROC_DEFAULT (ALC_RX_RING_CNT / 4)
/*
* The number of bits reserved for MSS in AR813x/AR815x controllers
* are 13 bits. This limits the maximum interface MTU size in TSO
* case(8191 + sizeof(struct ip) + sizeof(struct tcphdr)) as upper
* stack should not generate TCP segments with MSS greater than the
* limit. Also Atheros says that maximum MTU for TSO is 6KB.
*/
#define ALC_TSO_MTU (6 * 1024)
struct alc_rxdesc {
struct mbuf *rx_m;
bus_dmamap_t rx_dmamap;
struct rx_desc *rx_desc;
};
struct alc_txdesc {
struct mbuf *tx_m;
bus_dmamap_t tx_dmamap;
};
struct alc_ring_data {
struct tx_desc *alc_tx_ring;
bus_addr_t alc_tx_ring_paddr;
struct rx_desc *alc_rx_ring;
bus_addr_t alc_rx_ring_paddr;
struct rx_rdesc *alc_rr_ring;
bus_addr_t alc_rr_ring_paddr;
struct cmb *alc_cmb;
bus_addr_t alc_cmb_paddr;
struct smb *alc_smb;
bus_addr_t alc_smb_paddr;
};
struct alc_chain_data {
bus_dma_tag_t alc_parent_tag;
bus_dma_tag_t alc_buffer_tag;
bus_dma_tag_t alc_tx_tag;
struct alc_txdesc alc_txdesc[ALC_TX_RING_CNT];
bus_dma_tag_t alc_rx_tag;
struct alc_rxdesc alc_rxdesc[ALC_RX_RING_CNT];
bus_dma_tag_t alc_tx_ring_tag;
bus_dmamap_t alc_tx_ring_map;
bus_dma_tag_t alc_rx_ring_tag;
bus_dmamap_t alc_rx_ring_map;
bus_dma_tag_t alc_rr_ring_tag;
bus_dmamap_t alc_rr_ring_map;
bus_dmamap_t alc_rx_sparemap;
bus_dma_tag_t alc_cmb_tag;
bus_dmamap_t alc_cmb_map;
bus_dma_tag_t alc_smb_tag;
bus_dmamap_t alc_smb_map;
int alc_tx_prod;
int alc_tx_cons;
int alc_tx_cnt;
int alc_rx_cons;
int alc_rr_cons;
int alc_rxlen;
struct mbuf *alc_rxhead;
struct mbuf *alc_rxtail;
struct mbuf *alc_rxprev_tail;
};
struct alc_hw_stats {
/* Rx stats. */
uint32_t rx_frames;
uint32_t rx_bcast_frames;
uint32_t rx_mcast_frames;
uint32_t rx_pause_frames;
uint32_t rx_control_frames;
uint32_t rx_crcerrs;
uint32_t rx_lenerrs;
uint64_t rx_bytes;
uint32_t rx_runts;
uint32_t rx_fragments;
uint32_t rx_pkts_64;
uint32_t rx_pkts_65_127;
uint32_t rx_pkts_128_255;
uint32_t rx_pkts_256_511;
uint32_t rx_pkts_512_1023;
uint32_t rx_pkts_1024_1518;
uint32_t rx_pkts_1519_max;
uint32_t rx_pkts_truncated;
uint32_t rx_fifo_oflows;
uint32_t rx_rrs_errs;
uint32_t rx_alignerrs;
uint64_t rx_bcast_bytes;
uint64_t rx_mcast_bytes;
uint32_t rx_pkts_filtered;
/* Tx stats. */
uint32_t tx_frames;
uint32_t tx_bcast_frames;
uint32_t tx_mcast_frames;
uint32_t tx_pause_frames;
uint32_t tx_excess_defer;
uint32_t tx_control_frames;
uint32_t tx_deferred;
uint64_t tx_bytes;
uint32_t tx_pkts_64;
uint32_t tx_pkts_65_127;
uint32_t tx_pkts_128_255;
uint32_t tx_pkts_256_511;
uint32_t tx_pkts_512_1023;
uint32_t tx_pkts_1024_1518;
uint32_t tx_pkts_1519_max;
uint32_t tx_single_colls;
uint32_t tx_multi_colls;
uint32_t tx_late_colls;
uint32_t tx_excess_colls;
uint32_t tx_abort;
uint32_t tx_underrun;
uint32_t tx_desc_underrun;
uint32_t tx_lenerrs;
uint32_t tx_pkts_truncated;
uint64_t tx_bcast_bytes;
uint64_t tx_mcast_bytes;
};
struct alc_ident {
uint16_t vendorid;
uint16_t deviceid;
uint32_t max_framelen;
const char *name;
};
/*
* Software state per device.
*/
struct alc_softc {
struct ifnet *alc_ifp;
device_t alc_dev;
device_t alc_miibus;
struct resource *alc_res[1];
struct resource_spec *alc_res_spec;
struct resource *alc_irq[ALC_MSI_MESSAGES];
struct resource_spec *alc_irq_spec;
void *alc_intrhand[ALC_MSI_MESSAGES];
struct alc_ident *alc_ident;
int alc_rev;
int alc_chip_rev;
int alc_phyaddr;
uint8_t alc_eaddr[ETHER_ADDR_LEN];
uint32_t alc_dma_rd_burst;
uint32_t alc_dma_wr_burst;
uint32_t alc_rcb;
int alc_expcap;
int alc_pmcap;
int alc_flags;
#define ALC_FLAG_PCIE 0x0001
#define ALC_FLAG_PCIX 0x0002
#define ALC_FLAG_MSI 0x0004
#define ALC_FLAG_MSIX 0x0008
#define ALC_FLAG_PM 0x0010
#define ALC_FLAG_FASTETHER 0x0020
#define ALC_FLAG_JUMBO 0x0040
#define ALC_FLAG_CMB_BUG 0x0100
#define ALC_FLAG_SMB_BUG 0x0200
#define ALC_FLAG_L0S 0x0400
#define ALC_FLAG_L1S 0x0800
#define ALC_FLAG_APS 0x1000
#define ALC_FLAG_AR816X_FAMILY 0x2000
#define ALC_FLAG_LINK_WAR 0x4000
#define ALC_FLAG_E2X00 0x8000
#define ALC_FLAG_LINK 0x10000
struct callout alc_tick_ch;
struct alc_hw_stats alc_stats;
struct alc_chain_data alc_cdata;
struct alc_ring_data alc_rdata;
int alc_if_flags;
int alc_watchdog_timer;
int alc_process_limit;
volatile int alc_morework;
int alc_int_rx_mod;
int alc_int_tx_mod;
int alc_buf_size;
struct task alc_int_task;
struct taskqueue *alc_tq;
struct mtx alc_mtx;
};
/* Register access macros. */
#define CSR_WRITE_4(_sc, reg, val) \
bus_write_4((_sc)->alc_res[0], (reg), (val))
#define CSR_WRITE_2(_sc, reg, val) \
bus_write_2((_sc)->alc_res[0], (reg), (val))
#define CSR_WRITE_1(_sc, reg, val) \
bus_write_1((_sc)->alc_res[0], (reg), (val))
#define CSR_READ_2(_sc, reg) \
bus_read_2((_sc)->alc_res[0], (reg))
#define CSR_READ_4(_sc, reg) \
bus_read_4((_sc)->alc_res[0], (reg))
#define ALC_RXCHAIN_RESET(_sc) \
do { \
(_sc)->alc_cdata.alc_rxhead = NULL; \
(_sc)->alc_cdata.alc_rxtail = NULL; \
(_sc)->alc_cdata.alc_rxprev_tail = NULL; \
(_sc)->alc_cdata.alc_rxlen = 0; \
} while (0)
#define ALC_LOCK(_sc) mtx_lock(&(_sc)->alc_mtx)
#define ALC_UNLOCK(_sc) mtx_unlock(&(_sc)->alc_mtx)
#define ALC_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->alc_mtx, MA_OWNED)
#define ALC_TX_TIMEOUT 5
#define ALC_RESET_TIMEOUT 100
#define ALC_TIMEOUT 1000
#define ALC_PHY_TIMEOUT 1000
#endif /* _IF_ALCVAR_H */