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/* $OpenBSD: musyccvar.h,v 1.9 2006/02/06 17:29:11 jmc Exp $ */
/*
* Copyright (c) 2004,2005 Internet Business Solutions AG, Zurich, Switzerland
* Written by: Claudio Jeker <jeker@accoom.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __MUSYCCVAR_H__
#define __MUSYCCVAR_H__
#include <sys/queue.h>
#define PPP_HEADER_LEN 4 /* should be globaly defined by sppp */
/* some defaults */
#define MUSYCC_NUMCHAN 32 /* 32 channels per group */
#define MUSYCC_NUMPORT 8 /* max 8 ports per controller */
#define MUSYCC_SREQNUM 16 /* pending SREQ */
#define MUSYCC_SREQMASK (MUSYCC_SREQNUM - 1)
#define MUSYCC_SREQTIMEOUT 2
/* dma ring sizes */
#define MUSYCC_DMA_CNT 256
#define MUSYCC_DMA_MAPSIZE (MUSYCC_DMA_CNT * sizeof(struct dma_desc))
#define MUSYCC_DMA_SIZE 32
struct musycc_softc;
struct ebus_softc;
/* DMA descriptor for data */
struct dma_desc {
u_int32_t status;
u_int32_t data;
u_int32_t next;
/* Software only */
struct mbuf *mbuf;
struct dma_desc *nextdesc;
bus_dmamap_t map;
};
#define MUSYCC_INTLEN 512 /* 512 pending interrupts is enough */
struct musycc_intdesc {
u_int32_t md_intrq[MUSYCC_INTLEN];
};
struct musycc_dma_data {
/*
* received dma ring. rx_prod points to the frist descriptors that
* is under musycc control (first empty).
*/
struct dma_desc *rx_prod;
int rx_cnt;
struct dma_desc *tx_pend; /* finished pointer */
struct dma_desc *tx_cur; /* current insertion pointer */
int tx_cnt; /* number of descriptors */
int tx_use; /* number of used descriptors */
int tx_pkts; /* number of packets in queue */
};
enum musycc_state {
CHAN_FLOAT, /* unconnected channel */
CHAN_IDLE,
CHAN_RUNNING,
CHAN_FAULT,
CHAN_TRANSIENT /* dummy state to protect ongoing state changes */
};
enum musycc_event {
EV_NULL, /* null event, ignore */
EV_ACTIVATE, /* activate channel go to running state */
EV_STOP, /* stop dma engine */
EV_IDLE, /* free timeslots et al. and go to idle state */
EV_WATCHDOG /* watchdog event, stop dma engine */
};
/* group structure */
struct musycc_group {
struct musycc_softc *mg_hdlc; /* main controller */
struct musycc_grpdesc *mg_group; /* group descriptor */
u_int8_t mg_gnum; /* group number */
u_int8_t mg_port; /* port number */
u_int8_t mg_loaded; /* sreq(5) done? */
u_int64_t mg_fifomask; /* fifo allocation mask */
struct channel_softc *mg_channels[MUSYCC_NUMCHAN];
struct musycc_dma_data mg_dma_d[MUSYCC_NUMCHAN];
struct dma_desc *mg_freelist;
int mg_freecnt;
struct {
long timeout;
u_int32_t sreq;
enum musycc_event event;
} mg_sreq[MUSYCC_SREQNUM];
int mg_sreqpend;
int mg_sreqprod;
struct dma_desc *mg_dma_pool;
bus_dma_tag_t mg_dmat; /* bus dma tag */
caddr_t mg_listkva;
bus_dmamap_t mg_listmap;
bus_dma_segment_t mg_listseg[1];
int mg_listnseg;
bus_dmamap_t mg_tx_sparemap;
bus_dmamap_t mg_rx_sparemap;
};
/* attach arguments for framer devices */
struct musycc_attach_args {
char ma_product[64];
bus_size_t ma_base;
bus_size_t ma_size;
u_int32_t ma_type;
u_int8_t ma_gnum;
u_int8_t ma_port;
u_int8_t ma_flags;
char ma_slot;
};
/* generic ebus device handle */
struct ebus_dev {
bus_size_t base;
bus_size_t size;
bus_space_tag_t st;
bus_space_handle_t sh;
};
/* Softc for each HDLC channel config */
struct channel_softc {
struct sppp cc_ppp; /* sppp network attachement */
struct ifnet *cc_ifp; /* pointer to the active ifp */
struct musycc_group *cc_group;
struct device *cc_parent; /* parent framer */
u_int32_t cc_tslots; /* timeslot map */
int cc_unit;
enum musycc_state cc_state; /* state machine info */
u_int8_t cc_channel; /* HDLC channel */
u_int8_t cc_locked;
};
/* Softc for the HDLC Controller (function 0) */
struct musycc_softc {
struct device mc_dev; /* generic device structures */
void *mc_ih; /* interrupt handler cookie */
bus_space_tag_t mc_st; /* bus space tag */
bus_space_handle_t mc_sh; /* bus space handle */
bus_dma_tag_t mc_dmat; /* bus dma tag */
bus_size_t mc_iosize; /* size of bus space */
caddr_t mc_groupkva; /* group configuration mem */
bus_dmamap_t mc_cfgmap;
bus_dma_segment_t mc_cfgseg[1];
bus_dmamap_t mc_intrmap;
bus_dma_segment_t mc_intrseg[1];
int mc_cfgnseg;
int mc_intrnseg;
struct musycc_group *mc_groups; /* mc_ngroups groups */
struct musycc_intdesc *mc_intrd;
u_int32_t mc_global_conf; /* global config descriptor */
u_int32_t mc_intrqptr; /* interrupt queue pointer */
int mc_ngroups;
int mc_nports;
struct musycc_softc *mc_other; /* the other EBUS/HDLC dev */
bus_size_t mc_ledbase;
u_int8_t mc_ledmask;
u_int8_t mc_ledstate; /* current state of the LEDs */
int bus, device; /* location of card */
SLIST_ENTRY(musycc_softc) list; /* list of all hdlc ctrls */
};
int musycc_attach_common(struct musycc_softc *, u_int32_t, u_int32_t);
void musycc_set_port(struct musycc_group *, int);
int musycc_init_channel(struct channel_softc *, char);
void musycc_stop_channel(struct channel_softc *);
void musycc_free_channel(struct musycc_group *, int);
void musycc_start(struct ifnet *);
void musycc_watchdog(struct ifnet *);
void musycc_tick(struct channel_softc *);
int musycc_intr(void *);
int ebus_intr(void *);
/* EBUS API */
int ebus_attach_device(struct ebus_dev *, struct musycc_softc *,
bus_size_t, bus_size_t);
u_int8_t ebus_read(struct ebus_dev *, bus_size_t);
void ebus_write(struct ebus_dev *, bus_size_t, u_int8_t);
void ebus_read_buf(struct ebus_dev *, bus_size_t, void *, size_t);
void ebus_set_led(struct channel_softc *, int, u_int8_t);
#define MUSYCC_LED_GREEN 0x1
#define MUSYCC_LED_RED 0x2
#define MUSYCC_LED_MASK 0x3
/* channel API */
struct channel_softc *musycc_channel_create(const char *, u_int8_t);
void musycc_attach_sppp(struct channel_softc *,
int (*)(struct ifnet *, u_long, caddr_t));
int musycc_channel_attach(struct musycc_softc *,
struct channel_softc *, struct device *, u_int8_t);
void musycc_channel_detach(struct ifnet *);
#ifndef ACCOOM_DEBUG
#define ACCOOM_PRINTF(n, x)
#else
extern int accoom_debug;
#define ACCOOM_PRINTF(n, x) \
do { \
if (accoom_debug >= n) \
printf x; \
} while (0)
#endif
#endif
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