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freebsd/sys/dev/tsec/if_tsec.h
Rafal Jaworowski 321e12c82e tsec: Refactor driver's structure. 
Split the driver into the core functionality part (sys/dev/tsec/if_tsec.c) and
the bus attachment (sys/dev/tsec/if_tsec_ocp.c).

This lets better integrate and maintain the driver in other environments with
different attachment abstractions (there is at least one other FreeBSD port --
MPC83xx -- which uses this TSEC driver, but with different local bus model
i.e. some OF derivative). While there, clean up and fix minor cosmetics.

Obtained from:	Semihalf
2008-08-26 10:41:49 +00:00

304 lines
9.5 KiB
C
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/*-
* Copyright (C) 2006-2007 Semihalf, Piotr Kruszynski <ppk@semihalf.com>
* 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, 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 ``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.
*
* $FreeBSD$
*/
#ifndef _IF_TSEC_H
#define _IF_TSEC_H
#define TSEC_RX_NUM_DESC 256
#define TSEC_TX_NUM_DESC 256
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 */
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;
/* Watchdog and MII tick related */
struct callout tsec_callout;
int tsec_watchdog;
/* 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
/* Prototypes */
extern devclass_t tsec_devclass;
int tsec_attach(struct tsec_softc *sc);
int tsec_detach(struct tsec_softc *sc);
void tsec_error_intr(void *arg);
void tsec_receive_intr(void *arg);
void tsec_transmit_intr(void *arg);
int tsec_miibus_readreg(device_t dev, int phy, int reg);
void tsec_miibus_writereg(device_t dev, int phy, int reg, int value);
void tsec_miibus_statchg(device_t dev);
int tsec_resume(device_t dev); /* XXX */
void tsec_shutdown(device_t dev);
int tsec_suspend(device_t dev); /* XXX */
void tsec_get_hwaddr(struct tsec_softc *sc, uint8_t *addr);
#endif
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