diff options
Diffstat (limited to 'sys/dev/tsec/if_tsec.h')
| -rw-r--r-- | sys/dev/tsec/if_tsec.h | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/sys/dev/tsec/if_tsec.h b/sys/dev/tsec/if_tsec.h new file mode 100644 index 0000000..38c4e3d --- /dev/null +++ b/sys/dev/tsec/if_tsec.h @@ -0,0 +1,284 @@ +/*- + * Copyright (C) 2006-2007 Semihalf + * All rights reserved. + * + * Written by: Piotr Kruszynski <ppk@semihalf.com> + * + * 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, 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. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. + * + * $FreeBSD$ + */ + +#define TSEC_RX_NUM_DESC 256 +#define TSEC_TX_NUM_DESC 256 + +#define OCP_TSEC_RID_TXIRQ 0 +#define OCP_TSEC_RID_RXIRQ 1 +#define OCP_TSEC_RID_ERRIRQ 2 + +struct tsec_softc { + /* XXX MII bus requires that struct ifnet is first!!! */ + struct ifnet *tsec_ifp; + + struct mtx transmit_lock; /* transmitter lock */ + struct mtx receive_lock; /* receiver lock */ + + device_t dev; + device_t tsec_miibus; + struct mii_data *tsec_mii; /* MII media control */ + struct callout tsec_tick_ch; + int tsec_link; + + bus_dma_tag_t tsec_tx_dtag; /* TX descriptors tag */ + bus_dmamap_t tsec_tx_dmap; /* TX descriptors map */ + struct tsec_desc *tsec_tx_vaddr;/* vadress of TX descriptors */ + uint32_t tsec_tx_raddr; /* real adress of TX descriptors */ + + bus_dma_tag_t tsec_rx_dtag; /* RX descriptors tag */ + bus_dmamap_t tsec_rx_dmap; /* RX descriptors map */ + struct tsec_desc *tsec_rx_vaddr; /* vadress of RX descriptors */ + uint32_t tsec_rx_raddr; /* real adress of RX descriptors */ + + bus_dma_tag_t tsec_tx_mtag; /* TX mbufs tag */ + bus_dma_tag_t tsec_rx_mtag; /* TX mbufs tag */ + + struct rx_data_type { + bus_dmamap_t map; /* mbuf map */ + struct mbuf *mbuf; + uint32_t paddr; /* DMA addres of buffer */ + } rx_data[TSEC_RX_NUM_DESC]; + + uint32_t tx_cur_desc_cnt; + uint32_t tx_dirty_desc_cnt; + uint32_t rx_cur_desc_cnt; + + struct resource *sc_rres; /* register resource */ + int sc_rrid; /* register rid */ + struct { + bus_space_tag_t bst; + bus_space_handle_t bsh; + } sc_bas; + + struct resource *sc_transmit_ires; + void *sc_transmit_ihand; + int sc_transmit_irid; + struct resource *sc_receive_ires; + void *sc_receive_ihand; + int sc_receive_irid; + struct resource *sc_error_ires; + void *sc_error_ihand; + int sc_error_irid; + + int tsec_if_flags; + + /* TX maps */ + bus_dmamap_t tx_map_data[TSEC_TX_NUM_DESC]; + + /* unused TX maps data */ + uint32_t tx_map_unused_get_cnt; + uint32_t tx_map_unused_put_cnt; + bus_dmamap_t *tx_map_unused_data[TSEC_TX_NUM_DESC]; + + /* used TX maps data */ + uint32_t tx_map_used_get_cnt; + uint32_t tx_map_used_put_cnt; + bus_dmamap_t *tx_map_used_data[TSEC_TX_NUM_DESC]; + + /* mbufs in TX queue */ + uint32_t tx_mbuf_used_get_cnt; + uint32_t tx_mbuf_used_put_cnt; + struct mbuf *tx_mbuf_used_data[TSEC_TX_NUM_DESC]; +}; + +/* interface to get/put generic objects */ +#define TSEC_CNT_INIT(cnt, wrap) ((cnt) = ((wrap) - 1)) + +#define TSEC_INC(count, wrap) (count = ((count) + 1) & ((wrap) - 1)) + +#define TSEC_GET_GENERIC(hand, tab, count, wrap) \ + ((hand)->tab[TSEC_INC((hand)->count, wrap)]) + +#define TSEC_PUT_GENERIC(hand, tab, count, wrap, val) \ + ((hand)->tab[TSEC_INC((hand)->count, wrap)] = val) + +#define TSEC_BACK_GENERIC(sc, count, wrap) do { \ + if ((sc)->count > 0) \ + (sc)->count--; \ + else \ + (sc)->count = (wrap) - 1; \ +} while (0) + +/* TX maps interface */ +#define TSEC_TX_MAP_CNT_INIT(sc) do { \ + TSEC_CNT_INIT((sc)->tx_map_unused_get_cnt, TSEC_TX_NUM_DESC); \ + TSEC_CNT_INIT((sc)->tx_map_unused_put_cnt, TSEC_TX_NUM_DESC); \ + TSEC_CNT_INIT((sc)->tx_map_used_get_cnt, TSEC_TX_NUM_DESC); \ + TSEC_CNT_INIT((sc)->tx_map_used_put_cnt, TSEC_TX_NUM_DESC); \ +} while (0) + +/* interface to get/put unused TX maps */ +#define TSEC_ALLOC_TX_MAP(sc) \ + TSEC_GET_GENERIC(sc, tx_map_unused_data, tx_map_unused_get_cnt, \ + TSEC_TX_NUM_DESC) + +#define TSEC_FREE_TX_MAP(sc, val) \ + TSEC_PUT_GENERIC(sc, tx_map_unused_data, tx_map_unused_put_cnt, \ + TSEC_TX_NUM_DESC, val) + +/* interface to get/put used TX maps */ +#define TSEC_GET_TX_MAP(sc) \ + TSEC_GET_GENERIC(sc, tx_map_used_data, tx_map_used_get_cnt, \ + TSEC_TX_NUM_DESC) + +#define TSEC_PUT_TX_MAP(sc, val) \ + TSEC_PUT_GENERIC(sc, tx_map_used_data, tx_map_used_put_cnt, \ + TSEC_TX_NUM_DESC, val) + +/* interface to get/put TX mbufs in send queue */ +#define TSEC_TX_MBUF_CNT_INIT(sc) do { \ + TSEC_CNT_INIT((sc)->tx_mbuf_used_get_cnt, TSEC_TX_NUM_DESC); \ + TSEC_CNT_INIT((sc)->tx_mbuf_used_put_cnt, TSEC_TX_NUM_DESC); \ +} while (0) + +#define TSEC_GET_TX_MBUF(sc) \ + TSEC_GET_GENERIC(sc, tx_mbuf_used_data, tx_mbuf_used_get_cnt, \ + TSEC_TX_NUM_DESC) + +#define TSEC_PUT_TX_MBUF(sc, val) \ + TSEC_PUT_GENERIC(sc, tx_mbuf_used_data, tx_mbuf_used_put_cnt, \ + TSEC_TX_NUM_DESC, val) + +#define TSEC_EMPTYQ_TX_MBUF(sc) \ + ((sc)->tx_mbuf_used_get_cnt == (sc)->tx_mbuf_used_put_cnt) + +/* interface for manage tx tsec_desc */ +#define TSEC_TX_DESC_CNT_INIT(sc) do { \ + TSEC_CNT_INIT((sc)->tx_cur_desc_cnt, TSEC_TX_NUM_DESC); \ + TSEC_CNT_INIT((sc)->tx_dirty_desc_cnt, TSEC_TX_NUM_DESC); \ +} while (0) + +#define TSEC_GET_CUR_TX_DESC(sc) \ + &TSEC_GET_GENERIC(sc, tsec_tx_vaddr, tx_cur_desc_cnt, \ + TSEC_TX_NUM_DESC) + +#define TSEC_GET_DIRTY_TX_DESC(sc) \ + &TSEC_GET_GENERIC(sc, tsec_tx_vaddr, tx_dirty_desc_cnt, \ + TSEC_TX_NUM_DESC) + +#define TSEC_BACK_DIRTY_TX_DESC(sc) \ + TSEC_BACK_GENERIC(sc, tx_dirty_desc_cnt, TSEC_TX_NUM_DESC) + +#define TSEC_CUR_DIFF_DIRTY_TX_DESC(sc) \ + ((sc)->tx_cur_desc_cnt != (sc)->tx_dirty_desc_cnt) + +#define TSEC_FREE_TX_DESC(sc) \ + (((sc)->tx_cur_desc_cnt < (sc)->tx_dirty_desc_cnt) ? \ + ((sc)->tx_dirty_desc_cnt - (sc)->tx_cur_desc_cnt - 1) \ + : \ + (TSEC_TX_NUM_DESC - (sc)->tx_cur_desc_cnt \ + + (sc)->tx_dirty_desc_cnt - 1)) + +/* interface for manage rx tsec_desc */ +#define TSEC_RX_DESC_CNT_INIT(sc) do { \ + TSEC_CNT_INIT((sc)->rx_cur_desc_cnt, TSEC_RX_NUM_DESC); \ +} while (0) + +#define TSEC_GET_CUR_RX_DESC(sc) \ + &TSEC_GET_GENERIC(sc, tsec_rx_vaddr, rx_cur_desc_cnt, \ + TSEC_RX_NUM_DESC) + +#define TSEC_BACK_CUR_RX_DESC(sc) \ + TSEC_BACK_GENERIC(sc, rx_cur_desc_cnt, TSEC_RX_NUM_DESC) + +#define TSEC_GET_CUR_RX_DESC_CNT(sc) \ + ((sc)->rx_cur_desc_cnt) + +/* init all counters (for init only!) */ +#define TSEC_TX_RX_COUNTERS_INIT(sc) do { \ + TSEC_TX_MAP_CNT_INIT(sc); \ + TSEC_TX_MBUF_CNT_INIT(sc); \ + TSEC_TX_DESC_CNT_INIT(sc); \ + TSEC_RX_DESC_CNT_INIT(sc); \ +} while (0) + +/* read/write bus functions */ +#define TSEC_READ(sc, reg) \ + bus_space_read_4((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg)) +#define TSEC_WRITE(sc, reg, val) \ + bus_space_write_4((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg), (val)) + +/* Lock for transmitter */ +#define TSEC_TRANSMIT_LOCK(sc) do { \ + mtx_assert(&(sc)->receive_lock, MA_NOTOWNED); \ + mtx_lock(&(sc)->transmit_lock); \ +} while (0) + +#define TSEC_TRANSMIT_UNLOCK(sc) mtx_unlock(&(sc)->transmit_lock) +#define TSEC_TRANSMIT_LOCK_ASSERT(sc) mtx_assert(&(sc)->transmit_lock, MA_OWNED) + +/* Lock for receiver */ +#define TSEC_RECEIVE_LOCK(sc) do { \ + mtx_assert(&(sc)->transmit_lock, MA_NOTOWNED); \ + mtx_lock(&(sc)->receive_lock); \ +} while (0) + +#define TSEC_RECEIVE_UNLOCK(sc) mtx_unlock(&(sc)->receive_lock) +#define TSEC_RECEIVE_LOCK_ASSERT(sc) mtx_assert(&(sc)->receive_lock, MA_OWNED) + +/* Global tsec lock (with all locks) */ +#define TSEC_GLOBAL_LOCK(sc) do { \ + if ((mtx_owned(&(sc)->transmit_lock) ? 1 : 0) != \ + (mtx_owned(&(sc)->receive_lock) ? 1 : 0)) { \ + panic("tsec deadlock possibility detection!"); \ + } \ + mtx_lock(&(sc)->transmit_lock); \ + mtx_lock(&(sc)->receive_lock); \ +} while (0) + +#define TSEC_GLOBAL_UNLOCK(sc) do { \ + TSEC_RECEIVE_UNLOCK(sc); \ + TSEC_TRANSMIT_UNLOCK(sc); \ +} while (0) + +#define TSEC_GLOBAL_LOCK_ASSERT(sc) do { \ + TSEC_TRANSMIT_LOCK_ASSERT(sc); \ + TSEC_RECEIVE_LOCK_ASSERT(sc); \ +} while (0) + +/* From global to {transmit,receive} */ +#define TSEC_GLOBAL_TO_TRANSMIT_LOCK(sc) do { \ + mtx_unlock(&(sc)->receive_lock);\ +} while (0) + +#define TSEC_GLOBAL_TO_RECEIVE_LOCK(sc) do { \ + mtx_unlock(&(sc)->transmit_lock);\ +} while (0) + +struct tsec_desc { + volatile uint16_t flags; /* descriptor flags */ + volatile uint16_t length; /* buffer length */ + volatile uint32_t bufptr; /* buffer pointer */ +}; + +#define TSEC_READ_RETRY 10000 +#define TSEC_READ_DELAY 100 |
