1537078d8f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
312 lines
9.3 KiB
C
312 lines
9.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 2006-2007 Semihalf, Piotr Kruszynski
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _IF_TSEC_H
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#define _IF_TSEC_H
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#include <dev/ofw/openfirm.h>
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#define TSEC_RX_NUM_DESC 256
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#define TSEC_TX_NUM_DESC 256
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#define TSEC_TX_MAX_DMA_SEGS 8
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/* Interrupt Coalescing types */
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#define TSEC_IC_RX 0
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#define TSEC_IC_TX 1
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/* eTSEC ID */
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#define TSEC_ETSEC_ID 0x0124
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/* Frame sizes */
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#define TSEC_MIN_FRAME_SIZE 64
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#define TSEC_MAX_FRAME_SIZE 9600
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struct tsec_bufmap {
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bus_dmamap_t map;
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int map_initialized;
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struct mbuf *mbuf;
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};
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struct tsec_softc {
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/* XXX MII bus requires that struct ifnet is first!!! */
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struct ifnet *tsec_ifp;
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struct mtx transmit_lock; /* transmitter lock */
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struct mtx receive_lock; /* receiver lock */
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phandle_t node;
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device_t dev;
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device_t tsec_miibus;
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struct mii_data *tsec_mii; /* MII media control */
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int tsec_link;
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bus_dma_tag_t tsec_tx_dtag; /* TX descriptors tag */
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bus_dmamap_t tsec_tx_dmap; /* TX descriptors map */
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bus_dma_tag_t tsec_tx_mtag; /* TX mbufs tag */
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uint32_t tx_idx_head; /* TX head descriptor/bufmap index */
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uint32_t tx_idx_tail; /* TX tail descriptor/bufmap index */
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struct tsec_desc *tsec_tx_vaddr;/* virtual address of TX descriptors */
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struct tsec_bufmap tx_bufmap[TSEC_TX_NUM_DESC];
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bus_dma_tag_t tsec_rx_mtag; /* TX mbufs tag */
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bus_dma_tag_t tsec_rx_dtag; /* RX descriptors tag */
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bus_dmamap_t tsec_rx_dmap; /* RX descriptors map */
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struct tsec_desc *tsec_rx_vaddr; /* vadress of RX descriptors */
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struct rx_data_type {
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bus_dmamap_t map; /* mbuf map */
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struct mbuf *mbuf;
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uint32_t paddr; /* DMA address of buffer */
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} rx_data[TSEC_RX_NUM_DESC];
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uint32_t rx_cur_desc_cnt;
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struct resource *sc_rres; /* register resource */
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int sc_rrid; /* register rid */
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struct {
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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} sc_bas;
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struct resource *sc_transmit_ires;
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void *sc_transmit_ihand;
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int sc_transmit_irid;
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struct resource *sc_receive_ires;
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void *sc_receive_ihand;
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int sc_receive_irid;
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struct resource *sc_error_ires;
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void *sc_error_ihand;
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int sc_error_irid;
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int tsec_if_flags;
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int is_etsec;
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/* Watchdog and MII tick related */
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struct callout tsec_callout;
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int tsec_watchdog;
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/* interrupt coalescing */
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struct mtx ic_lock;
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uint32_t rx_ic_time; /* RW, valid values 0..65535 */
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uint32_t rx_ic_count; /* RW, valid values 0..255 */
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uint32_t tx_ic_time;
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uint32_t tx_ic_count;
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/* currently received frame */
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struct mbuf *frame;
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int phyaddr;
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bus_space_tag_t phy_bst;
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bus_space_handle_t phy_bsh;
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int phy_regoff;
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uint32_t tsec_rx_raddr; /* real address of RX descriptors */
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uint32_t tsec_tx_raddr; /* real address of TX descriptors */
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};
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/* interface to get/put generic objects */
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#define TSEC_CNT_INIT(cnt, wrap) ((cnt) = ((wrap) - 1))
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#define TSEC_INC(count, wrap) (count = ((count) + 1) & ((wrap) - 1))
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#define TSEC_GET_GENERIC(hand, tab, count, wrap) \
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((hand)->tab[TSEC_INC((hand)->count, wrap)])
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#define TSEC_PUT_GENERIC(hand, tab, count, wrap, val) \
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((hand)->tab[TSEC_INC((hand)->count, wrap)] = val)
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#define TSEC_BACK_GENERIC(sc, count, wrap) do { \
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if ((sc)->count > 0) \
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(sc)->count--; \
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else \
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(sc)->count = (wrap) - 1; \
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} while (0)
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#define TSEC_FREE_TX_DESC(sc) \
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(((sc)->tx_idx_tail - (sc)->tx_idx_head - 1) & (TSEC_TX_NUM_DESC - 1))
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/* interface for manage rx tsec_desc */
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#define TSEC_RX_DESC_CNT_INIT(sc) do { \
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TSEC_CNT_INIT((sc)->rx_cur_desc_cnt, TSEC_RX_NUM_DESC); \
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} while (0)
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#define TSEC_GET_CUR_RX_DESC(sc) \
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&TSEC_GET_GENERIC(sc, tsec_rx_vaddr, rx_cur_desc_cnt, \
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TSEC_RX_NUM_DESC)
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#define TSEC_BACK_CUR_RX_DESC(sc) \
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TSEC_BACK_GENERIC(sc, rx_cur_desc_cnt, TSEC_RX_NUM_DESC)
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#define TSEC_GET_CUR_RX_DESC_CNT(sc) \
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((sc)->rx_cur_desc_cnt)
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/* init all counters (for init only!) */
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#define TSEC_TX_RX_COUNTERS_INIT(sc) do { \
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sc->tx_idx_head = 0; \
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sc->tx_idx_tail = 0; \
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TSEC_RX_DESC_CNT_INIT(sc); \
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} while (0)
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/* read/write bus functions */
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#define TSEC_READ(sc, reg) \
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bus_space_read_4((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg))
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#define TSEC_WRITE(sc, reg, val) \
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bus_space_write_4((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg), (val))
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extern struct mtx tsec_phy_mtx;
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#define TSEC_PHY_LOCK(sc) mtx_lock(&tsec_phy_mtx)
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#define TSEC_PHY_UNLOCK(sc) mtx_unlock(&tsec_phy_mtx)
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#define TSEC_PHY_READ(sc, reg) \
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bus_space_read_4((sc)->phy_bst, (sc)->phy_bsh, \
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(reg) + (sc)->phy_regoff)
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#define TSEC_PHY_WRITE(sc, reg, val) \
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bus_space_write_4((sc)->phy_bst, (sc)->phy_bsh, \
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(reg) + (sc)->phy_regoff, (val))
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/* Lock for transmitter */
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#define TSEC_TRANSMIT_LOCK(sc) do { \
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mtx_assert(&(sc)->receive_lock, MA_NOTOWNED); \
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mtx_lock(&(sc)->transmit_lock); \
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} while (0)
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#define TSEC_TRANSMIT_UNLOCK(sc) mtx_unlock(&(sc)->transmit_lock)
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#define TSEC_TRANSMIT_LOCK_ASSERT(sc) mtx_assert(&(sc)->transmit_lock, MA_OWNED)
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/* Lock for receiver */
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#define TSEC_RECEIVE_LOCK(sc) do { \
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mtx_assert(&(sc)->transmit_lock, MA_NOTOWNED); \
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mtx_lock(&(sc)->receive_lock); \
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} while (0)
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#define TSEC_RECEIVE_UNLOCK(sc) mtx_unlock(&(sc)->receive_lock)
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#define TSEC_RECEIVE_LOCK_ASSERT(sc) mtx_assert(&(sc)->receive_lock, MA_OWNED)
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/* Lock for interrupts coalescing */
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#define TSEC_IC_LOCK(sc) do { \
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mtx_assert(&(sc)->ic_lock, MA_NOTOWNED); \
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mtx_lock(&(sc)->ic_lock); \
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} while (0)
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#define TSEC_IC_UNLOCK(sc) mtx_unlock(&(sc)->ic_lock)
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#define TSEC_IC_LOCK_ASSERT(sc) mtx_assert(&(sc)->ic_lock, MA_OWNED)
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/* Global tsec lock (with all locks) */
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#define TSEC_GLOBAL_LOCK(sc) do { \
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if ((mtx_owned(&(sc)->transmit_lock) ? 1 : 0) != \
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(mtx_owned(&(sc)->receive_lock) ? 1 : 0)) { \
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panic("tsec deadlock possibility detection!"); \
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} \
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mtx_lock(&(sc)->transmit_lock); \
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mtx_lock(&(sc)->receive_lock); \
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} while (0)
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#define TSEC_GLOBAL_UNLOCK(sc) do { \
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TSEC_RECEIVE_UNLOCK(sc); \
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TSEC_TRANSMIT_UNLOCK(sc); \
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} while (0)
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#define TSEC_GLOBAL_LOCK_ASSERT(sc) do { \
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TSEC_TRANSMIT_LOCK_ASSERT(sc); \
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TSEC_RECEIVE_LOCK_ASSERT(sc); \
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} while (0)
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/* From global to {transmit,receive} */
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#define TSEC_GLOBAL_TO_TRANSMIT_LOCK(sc) do { \
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mtx_unlock(&(sc)->receive_lock);\
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} while (0)
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#define TSEC_GLOBAL_TO_RECEIVE_LOCK(sc) do { \
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mtx_unlock(&(sc)->transmit_lock);\
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} while (0)
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struct tsec_desc {
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volatile uint16_t flags; /* descriptor flags */
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volatile uint16_t length; /* buffer length */
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volatile uint32_t bufptr; /* buffer pointer */
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};
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#define TSEC_READ_RETRY 10000
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#define TSEC_READ_DELAY 100
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/* Structures and defines for TCP/IP Off-load */
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struct tsec_tx_fcb {
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volatile uint16_t flags;
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volatile uint8_t l4_offset;
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volatile uint8_t l3_offset;
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volatile uint16_t ph_chsum;
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volatile uint16_t vlan;
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};
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struct tsec_rx_fcb {
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volatile uint16_t flags;
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volatile uint8_t rq_index;
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volatile uint8_t protocol;
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volatile uint16_t unused;
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volatile uint16_t vlan;
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};
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#define TSEC_CHECKSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
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#define TSEC_TX_FCB_IP4 TSEC_TX_FCB_L3_IS_IP
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#define TSEC_TX_FCB_IP6 (TSEC_TX_FCB_L3_IS_IP | TSEC_TX_FCB_L3_IS_IP6)
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#define TSEC_TX_FCB_TCP TSEC_TX_FCB_L4_IS_TCP_UDP
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#define TSEC_TX_FCB_UDP (TSEC_TX_FCB_L4_IS_TCP_UDP | TSEC_TX_FCB_L4_IS_UDP)
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#define TSEC_RX_FCB_IP_CSUM_CHECKED(flags) \
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((flags & (TSEC_RX_FCB_IP_FOUND | TSEC_RX_FCB_IP6_FOUND | \
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TSEC_RX_FCB_IP_CSUM | TSEC_RX_FCB_PARSE_ERROR)) \
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== (TSEC_RX_FCB_IP_FOUND | TSEC_RX_FCB_IP_CSUM))
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#define TSEC_RX_FCB_TCP_UDP_CSUM_CHECKED(flags) \
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((flags & (TSEC_RX_FCB_TCP_UDP_FOUND | TSEC_RX_FCB_TCP_UDP_CSUM \
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| TSEC_RX_FCB_PARSE_ERROR)) \
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== (TSEC_RX_FCB_TCP_UDP_FOUND | TSEC_RX_FCB_TCP_UDP_CSUM))
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/* Prototypes */
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extern devclass_t tsec_devclass;
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int tsec_attach(struct tsec_softc *sc);
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int tsec_detach(struct tsec_softc *sc);
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void tsec_error_intr(void *arg);
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void tsec_receive_intr(void *arg);
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void tsec_transmit_intr(void *arg);
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int tsec_miibus_readreg(device_t dev, int phy, int reg);
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int tsec_miibus_writereg(device_t dev, int phy, int reg, int value);
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void tsec_miibus_statchg(device_t dev);
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int tsec_resume(device_t dev); /* XXX */
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int tsec_shutdown(device_t dev);
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int tsec_suspend(device_t dev); /* XXX */
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void tsec_get_hwaddr(struct tsec_softc *sc, uint8_t *addr);
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#endif /* _IF_TSEC_H */
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