249 lines
7.4 KiB
C
249 lines
7.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 2004
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* Bill Paul <wpaul@windriver.com>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#define VGE_JUMBO_MTU 9000
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#define VGE_TX_DESC_CNT 256
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#define VGE_RX_DESC_CNT 252 /* Must be a multiple of 4!! */
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#define VGE_TX_RING_ALIGN 64
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#define VGE_RX_RING_ALIGN 64
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#define VGE_MAXTXSEGS 6
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#define VGE_RX_BUF_ALIGN sizeof(uint64_t)
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/*
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* VIA Velocity allows 64bit DMA addressing but high 16bits
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* of the DMA address should be the same for Tx/Rx buffers.
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* Because this condition can't be guaranteed vge(4) limit
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* DMA address space to 48bits.
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*/
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#if (BUS_SPACE_MAXADDR < 0xFFFFFFFFFF)
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#define VGE_BUF_DMA_MAXADDR BUS_SPACE_MAXADDR
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#else
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#define VGE_BUF_DMA_MAXADDR 0xFFFFFFFFFFFF
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#endif
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#define VGE_RX_LIST_SZ (VGE_RX_DESC_CNT * sizeof(struct vge_rx_desc))
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#define VGE_TX_LIST_SZ (VGE_TX_DESC_CNT * sizeof(struct vge_tx_desc))
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#define VGE_TX_DESC_INC(x) ((x) = ((x) + 1) % VGE_TX_DESC_CNT)
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#define VGE_TX_DESC_DEC(x) \
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((x) = (((x) + VGE_TX_DESC_CNT - 1) % VGE_TX_DESC_CNT))
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#define VGE_RX_DESC_INC(x) ((x) = ((x) + 1) % VGE_RX_DESC_CNT)
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#define VGE_ADDR_LO(y) ((uint64_t) (y) & 0xFFFFFFFF)
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#define VGE_ADDR_HI(y) ((uint64_t) (y) >> 32)
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#define VGE_BUFLEN(y) ((y) & 0x3FFF)
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#define VGE_RXBYTES(x) (((x) & VGE_RDSTS_BUFSIZ) >> 16)
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#define VGE_MIN_FRAMELEN 60
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#define VGE_INT_HOLDOFF_TICK 20
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#define VGE_INT_HOLDOFF_USEC(x) ((x) / VGE_INT_HOLDOFF_TICK)
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#define VGE_INT_HOLDOFF_MIN 0
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#define VGE_INT_HOLDOFF_MAX (255 * VGE_INT_HOLDOFF_TICK)
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#define VGE_INT_HOLDOFF_DEFAULT 150
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#define VGE_RX_COAL_PKT_MIN 1
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#define VGE_RX_COAL_PKT_MAX VGE_RX_DESC_CNT
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#define VGE_RX_COAL_PKT_DEFAULT 64
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#define VGE_TX_COAL_PKT_MIN 1
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#define VGE_TX_COAL_PKT_MAX VGE_TX_DESC_CNT
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#define VGE_TX_COAL_PKT_DEFAULT 128
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struct vge_type {
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uint16_t vge_vid;
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uint16_t vge_did;
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char *vge_name;
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};
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struct vge_txdesc {
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struct mbuf *tx_m;
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bus_dmamap_t tx_dmamap;
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struct vge_tx_desc *tx_desc;
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struct vge_txdesc *txd_prev;
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};
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struct vge_rxdesc {
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struct mbuf *rx_m;
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bus_dmamap_t rx_dmamap;
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struct vge_rx_desc *rx_desc;
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struct vge_rxdesc *rxd_prev;
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};
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struct vge_chain_data{
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bus_dma_tag_t vge_ring_tag;
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bus_dma_tag_t vge_buffer_tag;
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bus_dma_tag_t vge_tx_tag;
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struct vge_txdesc vge_txdesc[VGE_TX_DESC_CNT];
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bus_dma_tag_t vge_rx_tag;
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struct vge_rxdesc vge_rxdesc[VGE_RX_DESC_CNT];
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bus_dma_tag_t vge_tx_ring_tag;
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bus_dmamap_t vge_tx_ring_map;
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bus_dma_tag_t vge_rx_ring_tag;
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bus_dmamap_t vge_rx_ring_map;
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bus_dmamap_t vge_rx_sparemap;
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int vge_tx_prodidx;
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int vge_tx_considx;
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int vge_tx_cnt;
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int vge_rx_prodidx;
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int vge_rx_commit;
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struct mbuf *vge_head;
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struct mbuf *vge_tail;
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};
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#define VGE_CHAIN_RESET(_sc) \
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do { \
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if ((_sc)->vge_cdata.vge_head != NULL) { \
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m_freem((_sc)->vge_cdata.vge_head); \
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(_sc)->vge_cdata.vge_head = NULL; \
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(_sc)->vge_cdata.vge_tail = NULL; \
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} \
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} while (0);
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struct vge_ring_data {
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struct vge_tx_desc *vge_tx_ring;
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bus_addr_t vge_tx_ring_paddr;
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struct vge_rx_desc *vge_rx_ring;
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bus_addr_t vge_rx_ring_paddr;
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};
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struct vge_hw_stats {
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uint32_t rx_frames;
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uint32_t rx_good_frames;
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uint32_t rx_fifo_oflows;
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uint32_t rx_runts;
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uint32_t rx_runts_errs;
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uint32_t rx_pkts_64;
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uint32_t rx_pkts_65_127;
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uint32_t rx_pkts_128_255;
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uint32_t rx_pkts_256_511;
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uint32_t rx_pkts_512_1023;
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uint32_t rx_pkts_1024_1518;
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uint32_t rx_pkts_1519_max;
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uint32_t rx_pkts_1519_max_errs;
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uint32_t rx_jumbos;
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uint32_t rx_crcerrs;
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uint32_t rx_pause_frames;
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uint32_t rx_alignerrs;
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uint32_t rx_nobufs;
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uint32_t rx_symerrs;
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uint32_t rx_lenerrs;
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uint32_t tx_good_frames;
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uint32_t tx_pkts_64;
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uint32_t tx_pkts_65_127;
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uint32_t tx_pkts_128_255;
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uint32_t tx_pkts_256_511;
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uint32_t tx_pkts_512_1023;
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uint32_t tx_pkts_1024_1518;
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uint32_t tx_jumbos;
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uint32_t tx_colls;
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uint32_t tx_pause;
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uint32_t tx_sqeerrs;
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uint32_t tx_latecolls;
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};
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struct vge_softc {
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struct ifnet *vge_ifp; /* interface info */
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device_t vge_dev;
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struct resource *vge_res;
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struct resource *vge_irq;
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void *vge_intrhand;
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device_t vge_miibus;
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int vge_if_flags;
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int vge_phyaddr;
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int vge_flags;
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#define VGE_FLAG_PCIE 0x0001
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#define VGE_FLAG_MSI 0x0002
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#define VGE_FLAG_PMCAP 0x0004
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#define VGE_FLAG_JUMBO 0x0008
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#define VGE_FLAG_SUSPENDED 0x4000
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#define VGE_FLAG_LINK 0x8000
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int vge_expcap;
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int vge_pmcap;
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int vge_camidx;
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int vge_int_holdoff;
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int vge_rx_coal_pkt;
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int vge_tx_coal_pkt;
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struct mtx vge_mtx;
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struct callout vge_watchdog;
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int vge_timer;
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struct vge_chain_data vge_cdata;
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struct vge_ring_data vge_rdata;
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struct vge_hw_stats vge_stats;
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};
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#define VGE_LOCK(_sc) mtx_lock(&(_sc)->vge_mtx)
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#define VGE_UNLOCK(_sc) mtx_unlock(&(_sc)->vge_mtx)
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#define VGE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->vge_mtx, MA_OWNED)
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/*
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* register space access macros
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*/
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#define CSR_WRITE_STREAM_4(sc, reg, val) \
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bus_write_stream_4(sc->vge_res, reg, val)
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#define CSR_WRITE_4(sc, reg, val) \
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bus_write_4(sc->vge_res, reg, val)
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#define CSR_WRITE_2(sc, reg, val) \
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bus_write_2(sc->vge_res, reg, val)
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#define CSR_WRITE_1(sc, reg, val) \
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bus_write_1(sc->vge_res, reg, val)
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#define CSR_READ_4(sc, reg) \
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bus_read_4(sc->vge_res, reg)
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#define CSR_READ_2(sc, reg) \
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bus_read_2(sc->vge_res, reg)
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#define CSR_READ_1(sc, reg) \
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bus_read_1(sc->vge_res, reg)
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#define CSR_SETBIT_1(sc, reg, x) \
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CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) | (x))
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#define CSR_SETBIT_2(sc, reg, x) \
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CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) | (x))
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#define CSR_SETBIT_4(sc, reg, x) \
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CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x))
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#define CSR_CLRBIT_1(sc, reg, x) \
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CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) & ~(x))
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#define CSR_CLRBIT_2(sc, reg, x) \
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CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) & ~(x))
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#define CSR_CLRBIT_4(sc, reg, x) \
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CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x))
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#define VGE_RXCHUNK 4
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#define VGE_TIMEOUT 10000
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