/* $NetBSD: if_snvar.h,v 1.15 2021/11/10 17:19:29 msaitoh Exp $ */ /* * 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/newsmips vars */ /* * 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. */ #define SWO(m, a, o, x) (*(uint32_t *)((uint32_t *)(a) + (o)) = (x)) #define SRO(m, a, o) (*(uint32_t *)((uint32_t *)(a) + (o)) & 0xffff) /* * 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_regbase[(reg) * 4 + 3]) #define NIC_PUT(sc, reg, val) ((sc)->sc_regbase[(reg) * 4 + 3] = val) #define SONIC_GETDMA(sc, p) (((sc)->sc_flags & F_NWS40S0) == 0 ? \ ((uint32_t)(p)) : (((uint32_t)(p) & 0xffff) | 0xfff00000)) #define SONIC_BUFFER(sc, p) (((sc)->sc_flags & F_NWS40S0) == 0 ? \ (p) : \ (void *)(((uint32_t)((sc)->buffer)) | ((uint32_t)(p) & 0xffff))) #define SN_REGSIZE (SN_NREGS * 4) #include <mips/locore.h> /* * 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 4 /* # receive buffers < NRRA */ #define RBAMASK (NRBA - 1) #define NTDA 4 /* # transmit descriptors */ #define NRRA 8 /* # 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) (ETHER_HDR_LEN + ETHERMTU + FCSSIZE + 6) /* * 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 { void *mtd_txp; uint32_t mtd_vtxp; void *mtd_buf; uint32_t mtd_vbuf; struct mbuf *mtd_mbuf; } mtd_t; /* * The sn_softc for NEWS5000 if_sn. */ struct sn_softc { device_t sc_dev; struct ethercom sc_ethercom; #define sc_if sc_ethercom.ec_if /* network visible interface */ void * sc_hwbase; /* hardware base address */ volatile uint16_t *sc_regbase; /* register base address */ int bitmode; /* 32 bit mode == 1, 16 == 0 */ uint16_t snr_dcr; /* DCR for this instance */ uint16_t snr_dcr2; /* DCR2 for this instance */ int slotno; /* Slot number */ int sc_rramark; /* index into p_rra of wp */ void *p_rra[NRRA]; /* RX resource descs */ uint32_t v_rra[NRRA]; /* DMA addresses of p_rra */ uint32_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 */ void *p_rda; uint32_t v_rda; void *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 */ void *p_cda; uint32_t v_cda; uint8_t *memory; uint8_t *buffer; u_int sc_flags; #define F_NWS40S0 0x0001 }; /* * Accessing SONIC data structures and registers as 32 bit values * makes code endianness 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) (4 * 4) /* * 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) (7 * 4) #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) (TXP_WORDS*4) #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 snsetup(struct sn_softc *sc, uint8_t *); int snintr(void *); void sn_md_init(struct sn_softc *);
