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/* $FreeBSD: release/9.1.0/sys/dev/snc/dp83932var.h 181298 2008-08-04 19:19:18Z jhb $ */
/* $NecBSD: dp83932var.h,v 1.3 1999/01/24 01:39:51 kmatsuda Exp $ */
/* $NetBSD: if_snvar.h,v 1.12 1998/05/01 03:42:47 scottr Exp $ */
/*-
* [NetBSD for NEC PC-98 series]
* Copyright (c) 1997, 1998, 1999
* Kouichi Matsuda. All rights reserved.
*
* Copyright (c) 1991 Algorithmics Ltd (http://www.algor.co.uk)
* You may use, copy, and modify this program so long as you retain the
* copyright line.
*/
/*
* if_snvar.h -- National Semiconductor DP8393X (SONIC) NetBSD/mac68k vars
*/
/*
* Modified for NetBSD/pc98 1.2.1 from NetBSD/mac68k 1.2D by Kouichi Matsuda.
* Make adapted for NEC PC-9801-83, 84, PC-9801-103, 104, PC-9801N-25 and
* PC-9801N-J02, J02R, which uses National Semiconductor DP83934AVQB as
* Ethernet Controller and National Semiconductor NS46C46 as
* (64 * 16 bits) Microwire Serial EEPROM.
*/
/*
* Vendor types
*/
/*
* SONIC buffers need to be aligned 16 or 32 bit aligned.
* These macros calculate and verify alignment.
*/
#define ROUNDUP(p, N) (((int) p + N - 1) & ~(N - 1))
#define SOALIGN(m, array) (m ? (ROUNDUP(array, 4)) : (ROUNDUP(array, 2)))
#define LOWER(x) ((unsigned)(x) & 0xffff)
#define UPPER(x) ((unsigned)(x) >> 16)
/*
* Memory access macros. Since we handle SONIC in 16 bit mode (PB5X0)
* and 32 bit mode (everything else) using a single GENERIC kernel
* binary, all structures have to be accessed using macros which can
* adjust the offsets appropriately.
*/
/* m is not sc->bitmode, we treat m as sc. */
#define SWO(m, a, o, x) (*(m)->sc_writetodesc)((m), (a), (o), (x))
#define SRO(m, a, o) (*(m)->sc_readfromdesc)((m), (a), (o))
/*
* Register access macros. We use bus_space_* to talk to the Sonic
* registers. A mapping table is used in case a particular configuration
* hooked the regs up at non-word offsets.
*/
#define NIC_GET(sc, reg) (*(sc)->sc_nic_get)(sc, reg)
#define NIC_PUT(sc, reg, val) (*(sc)->sc_nic_put)(sc, reg, val)
#define SONIC_GETDMA(p) (p)
/* pc98 does not have any write buffers to flush... */
#define wbflush()
/*
* buffer sizes in 32 bit mode
* 1 TXpkt is 4 hdr words + (3 * FRAGMAX) + 1 link word == 23 words == 92 bytes
*
* 1 RxPkt is 7 words == 28 bytes
* 1 Rda is 4 words == 16 bytes
*
* The CDA is 17 words == 68 bytes
*
* total space in page 0 = NTDA * 92 + NRRA * 16 + NRDA * 28 + 68
*/
#define NRBA 16 /* # receive buffers < NRRA */
#define RBAMASK (NRBA-1)
#define NTDA 16 /* # transmit descriptors */
#define NRRA 64 /* # receive resource descriptors */
#define RRAMASK (NRRA-1) /* the reason why NRRA must be power of two */
#define FCSSIZE 4 /* size of FCS appended to packets */
/*
* maximum receive packet size plus 2 byte pad to make each
* one aligned. 4 byte slop (required for eobc)
*/
#define RBASIZE(sc) (sizeof(struct ether_header) + ETHERMTU + FCSSIZE + \
((sc)->bitmode ? 6 : 2))
/*
* transmit buffer area
*/
#define TXBSIZE 1536 /* 6*2^8 -- the same size as the 8390 TXBUF */
#define SN_NPAGES 2 + NRBA + (NTDA/2)
typedef struct mtd {
u_int32_t mtd_vtxp;
u_int32_t mtd_vbuf;
struct mbuf *mtd_mbuf;
} mtd_t;
/*
* The snc_softc for PC-98 if_snc.
*/
typedef struct snc_softc {
struct ifnet * sc_ifp;
device_t sc_dev;
struct resource * ioport;
int ioport_rid;
struct resource * iomem;
int iomem_rid;
struct resource * irq;
int irq_rid;
void * irq_handle;
bus_space_tag_t sc_iot; /* bus identifier for io */
bus_space_tag_t sc_memt; /* bus identifier for mem */
bus_space_handle_t sc_ioh; /* io handle */
bus_space_handle_t sc_memh; /* bus memory handle */
int bitmode; /* 32 bit mode == 1, 16 == 0 */
u_int16_t sncr_dcr; /* DCR for this instance */
u_int16_t sncr_dcr2; /* DCR2 for this instance */
int sc_rramark; /* index into v_rra of wp */
u_int32_t v_rra[NRRA]; /* DMA addresses of v_rra */
u_int32_t v_rea; /* ptr to the end of the rra space */
int sc_rxmark; /* current hw pos in rda ring */
int sc_rdamark; /* current sw pos in rda ring */
int sc_nrda; /* total number of RDAs */
u_int32_t v_rda;
u_int32_t rbuf[NRBA];
struct mtd mtda[NTDA];
int mtd_hw; /* idx of first mtd given to hw */
int mtd_prev; /* idx of last mtd given to hardware */
int mtd_free; /* next free mtd to use */
int mtd_tlinko; /*
* offset of tlink of last txp given
* to SONIC. Need to clear EOL on
* this word to add a desc.
*/
int mtd_pint; /* Counter to set TXP_PINT */
u_int32_t v_cda;
u_int8_t curbank; /* current window bank */
struct ifmedia sc_media; /* supported media information */
/*
* NIC register access functions:
*/
u_int16_t (*sc_nic_get)
(struct snc_softc *, u_int8_t);
void (*sc_nic_put)
(struct snc_softc *, u_int8_t, u_int16_t);
/*
* Memory functions:
*
* copy to/from descriptor
* copy to/from buffer
* zero bytes in buffer
*/
void (*sc_writetodesc)
(struct snc_softc *, u_int32_t, u_int32_t, u_int16_t);
u_int16_t (*sc_readfromdesc)
(struct snc_softc *, u_int32_t, u_int32_t);
void (*sc_copytobuf)
(struct snc_softc *, void *, u_int32_t, size_t);
void (*sc_copyfrombuf)
(struct snc_softc *, void *, u_int32_t, size_t);
void (*sc_zerobuf)
(struct snc_softc *, u_int32_t, size_t);
/*
* Machine-dependent functions:
*
* hardware reset hook - may be NULL
* hardware init hook - may be NULL
* media change hook - may be NULL
*/
void (*sc_hwreset)(struct snc_softc *);
void (*sc_hwinit)(struct snc_softc *);
int (*sc_mediachange)(struct snc_softc *);
void (*sc_mediastatus)(struct snc_softc *, struct ifmediareq *);
int sc_enabled; /* boolean; power enabled on interface */
int (*sc_enable)(struct snc_softc *);
void (*sc_disable)(struct snc_softc *);
void *sc_sh; /* shutdownhook cookie */
int gone;
struct mtx sc_lock;
struct callout sc_timer;
int sc_tx_timeout;
} snc_softc_t;
#define SNC_LOCK(sc) mtx_lock(&(sc)->sc_lock)
#define SNC_UNLOCK(sc) mtx_unlock(&(sc)->sc_lock)
#define SNC_ASSERT_LOCKED(sc) mtx_assert(&(sc)->sc_lock, MA_OWNED)
/*
* Accessing SONIC data structures and registers as 32 bit values
* makes code endianess independent. The SONIC is however always in
* bigendian mode so it is necessary to ensure that data structures shared
* between the CPU and the SONIC are always in bigendian order.
*/
/*
* Receive Resource Descriptor
* This structure describes the buffers into which packets
* will be received. Note that more than one packet may be
* packed into a single buffer if constraints permit.
*/
#define RXRSRC_PTRLO 0 /* buffer address LO */
#define RXRSRC_PTRHI 1 /* buffer address HI */
#define RXRSRC_WCLO 2 /* buffer size (16bit words) LO */
#define RXRSRC_WCHI 3 /* buffer size (16bit words) HI */
#define RXRSRC_SIZE(sc) (sc->bitmode ? (4 * 4) : (4 * 2))
/*
* Receive Descriptor
* This structure holds information about packets received.
*/
#define RXPKT_STATUS 0
#define RXPKT_BYTEC 1
#define RXPKT_PTRLO 2
#define RXPKT_PTRHI 3
#define RXPKT_SEQNO 4
#define RXPKT_RLINK 5
#define RXPKT_INUSE 6
#define RXPKT_SIZE(sc) (sc->bitmode ? (7 * 4) : (7 * 2))
#define RBASEQ(x) (((x)>>8)&0xff)
#define PSNSEQ(x) ((x) & 0xff)
/*
* Transmit Descriptor
* This structure holds information about packets to be transmitted.
*/
#define FRAGMAX 8 /* maximum number of fragments in a packet */
#define TXP_STATUS 0 /* + transmitted packet status */
#define TXP_CONFIG 1 /* transmission configuration */
#define TXP_PKTSIZE 2 /* entire packet size in bytes */
#define TXP_FRAGCNT 3 /* # fragments in packet */
#define TXP_FRAGOFF 4 /* offset to first fragment */
#define TXP_FRAGSIZE 3 /* size of each fragment desc */
#define TXP_FPTRLO 0 /* ptr to packet fragment LO */
#define TXP_FPTRHI 1 /* ptr to packet fragment HI */
#define TXP_FSIZE 2 /* fragment size */
#define TXP_WORDS (TXP_FRAGOFF + (FRAGMAX*TXP_FRAGSIZE) + 1) /* 1 for tlink */
#define TXP_SIZE(sc) ((sc->bitmode) ? (TXP_WORDS*4) : (TXP_WORDS*2))
#define EOL 0x0001 /* end of list marker for link fields */
/*
* CDA, the CAM descriptor area. The SONIC has a 16 entry CAM to
* match incoming addresses against. It is programmed via DMA
* from a memory region.
*/
#define MAXCAM 16 /* number of user entries in CAM */
#define CDA_CAMDESC 4 /* # words i na descriptor */
#define CDA_CAMEP 0 /* CAM Address Port 0 xx-xx-xx-xx-YY-YY */
#define CDA_CAMAP0 1 /* CAM Address Port 1 xx-xx-YY-YY-xx-xx */
#define CDA_CAMAP1 2 /* CAM Address Port 2 YY-YY-xx-xx-xx-xx */
#define CDA_CAMAP2 3
#define CDA_ENABLE 64 /* mask enabling CAM entries */
#define CDA_SIZE(sc) ((4*16 + 1) * ((sc->bitmode) ? 4 : 2))
int sncconfig(struct snc_softc *, int *, int, int, u_int8_t *);
void sncintr(void *);
void sncshutdown(void *);