/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (C) 2006-2007 Semihalf, Piotr Kruszynski
* 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
#include <dev/ofw/openfirm.h>
#define TSEC_RX_NUM_DESC 256
#define TSEC_TX_NUM_DESC 256
#define TSEC_TX_MAX_DMA_SEGS 8
/* Interrupt Coalescing types */
#define TSEC_IC_RX 0
#define TSEC_IC_TX 1
/* eTSEC ID */
#define TSEC_ETSEC_ID 0x0124
/* Frame sizes */
#define TSEC_MIN_FRAME_SIZE 64
#define TSEC_MAX_FRAME_SIZE 9600
struct tsec_bufmap {
bus_dmamap_t map;
int map_initialized;
struct mbuf *mbuf;
};
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 */
phandle_t node;
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 */
bus_dma_tag_t tsec_tx_mtag; /* TX mbufs tag */
uint32_t tx_idx_head; /* TX head descriptor/bufmap index */
uint32_t tx_idx_tail; /* TX tail descriptor/bufmap index */
struct tsec_desc *tsec_tx_vaddr;/* virtual address of TX descriptors */
struct tsec_bufmap tx_bufmap[TSEC_TX_NUM_DESC];
bus_dma_tag_t tsec_rx_mtag; /* TX mbufs tag */
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 */
struct rx_data_type {
bus_dmamap_t map; /* mbuf map */
struct mbuf *mbuf;
uint32_t paddr; /* DMA address of buffer */
} rx_data[TSEC_RX_NUM_DESC];
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;
int is_etsec;
/* Watchdog and MII tick related */
struct callout tsec_callout;
int tsec_watchdog;
/* interrupt coalescing */
struct mtx ic_lock;
uint32_t rx_ic_time; /* RW, valid values 0..65535 */
uint32_t rx_ic_count; /* RW, valid values 0..255 */
uint32_t tx_ic_time;
uint32_t tx_ic_count;
/* currently received frame */
struct mbuf *frame;
int phyaddr;
bus_space_tag_t phy_bst;
bus_space_handle_t phy_bsh;
int phy_regoff;
uint32_t tsec_rx_raddr; /* real address of RX descriptors */
uint32_t tsec_tx_raddr; /* real address of TX descriptors */
};
/* 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)
#define TSEC_FREE_TX_DESC(sc) \
(((sc)->tx_idx_tail - (sc)->tx_idx_head - 1) & (TSEC_TX_NUM_DESC - 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 { \
sc->tx_idx_head = 0; \
sc->tx_idx_tail = 0; \
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))
extern struct mtx tsec_phy_mtx;
#define TSEC_PHY_LOCK(sc) mtx_lock(&tsec_phy_mtx)
#define TSEC_PHY_UNLOCK(sc) mtx_unlock(&tsec_phy_mtx)
#define TSEC_PHY_READ(sc, reg) \
bus_space_read_4((sc)->phy_bst, (sc)->phy_bsh, \
(reg) + (sc)->phy_regoff)
#define TSEC_PHY_WRITE(sc, reg, val) \
bus_space_write_4((sc)->phy_bst, (sc)->phy_bsh, \
(reg) + (sc)->phy_regoff, (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)
/* Lock for interrupts coalescing */
#define TSEC_IC_LOCK(sc) do { \
mtx_assert(&(sc)->ic_lock, MA_NOTOWNED); \
mtx_lock(&(sc)->ic_lock); \
} while (0)
#define TSEC_IC_UNLOCK(sc) mtx_unlock(&(sc)->ic_lock)
#define TSEC_IC_LOCK_ASSERT(sc) mtx_assert(&(sc)->ic_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
/* Structures and defines for TCP/IP Off-load */
struct tsec_tx_fcb {
volatile uint16_t flags;
volatile uint8_t l4_offset;
volatile uint8_t l3_offset;
volatile uint16_t ph_chsum;
volatile uint16_t vlan;
};
struct tsec_rx_fcb {
volatile uint16_t flags;
volatile uint8_t rq_index;
volatile uint8_t protocol;
volatile uint16_t unused;
volatile uint16_t vlan;
};
#define TSEC_CHECKSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
#define TSEC_TX_FCB_IP4 TSEC_TX_FCB_L3_IS_IP
#define TSEC_TX_FCB_IP6 (TSEC_TX_FCB_L3_IS_IP | TSEC_TX_FCB_L3_IS_IP6)
#define TSEC_TX_FCB_TCP TSEC_TX_FCB_L4_IS_TCP_UDP
#define TSEC_TX_FCB_UDP (TSEC_TX_FCB_L4_IS_TCP_UDP | TSEC_TX_FCB_L4_IS_UDP)
#define TSEC_RX_FCB_IP_CSUM_CHECKED(flags) \
((flags & (TSEC_RX_FCB_IP_FOUND | TSEC_RX_FCB_IP6_FOUND | \
TSEC_RX_FCB_IP_CSUM | TSEC_RX_FCB_PARSE_ERROR)) \
== (TSEC_RX_FCB_IP_FOUND | TSEC_RX_FCB_IP_CSUM))
#define TSEC_RX_FCB_TCP_UDP_CSUM_CHECKED(flags) \
((flags & (TSEC_RX_FCB_TCP_UDP_FOUND | TSEC_RX_FCB_TCP_UDP_CSUM \
| TSEC_RX_FCB_PARSE_ERROR)) \
== (TSEC_RX_FCB_TCP_UDP_FOUND | TSEC_RX_FCB_TCP_UDP_CSUM))
/* 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);
int 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 */
int tsec_shutdown(device_t dev);
int tsec_suspend(device_t dev); /* XXX */
void tsec_get_hwaddr(struct tsec_softc *sc, uint8_t *addr);
#endif /* _IF_TSEC_H */
