07b064e02e
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will only support Ethernet. Tcpdump itself should be ok, but libpcap needs lot of work. For the detailed change history, look at the commit log entries for the is-newarp branch.
129 lines
4.4 KiB
C
129 lines
4.4 KiB
C
/* $NetBSD: if_ievar.h,v 1.9 1997/03/15 18:10:53 is Exp $ */
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/*
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* Machine-dependent glue for the Intel Ethernet (ie) driver.
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*/
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#define MXFRAMES 128 /* max number of frames to allow for receive */
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#define MXRXBUF 192 /* max number of buffers to allocate */
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#define IE_RBUF_SIZE 256 /* size of each buffer, MUST BE POWER OF TWO */
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#define NTXBUF 2 /* number of transmit buffer/command pairs */
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#define IE_TBUF_SIZE (3*512) /* length of transmit buffer */
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enum ie_hardware {
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IE_VME, /* multibus to VME ie card */
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IE_OBIO, /* on board */
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IE_VME3E, /* sun 3e VME card */
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IE_UNKNOWN
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};
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/*
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* Ethernet status, per interface.
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*
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* hardware addresses/sizes to know (all KVA):
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* sc_iobase = base of chip's 24 bit address space
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* sc_maddr = base address of chip RAM as stored in ie_base of iscp
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* sc_msize = size of chip's RAM
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* sc_reg = address of card dependent registers
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*
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* the chip uses two types of pointers: 16 bit and 24 bit
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* 16 bit pointers are offsets from sc_maddr/ie_base
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* KVA(16 bit offset) = offset + sc_maddr
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* 24 bit pointers are offset from sc_iobase in KVA
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* KVA(24 bit address) = address + sc_iobase
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*
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* on the vme/multibus we have the page map to control where ram appears
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* in the address space. we choose to have RAM start at 0 in the
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* 24 bit address space. this means that sc_iobase == sc_maddr!
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* to get the phyiscal address of the board's RAM you must take the
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* top 12 bits of the physical address of the register address
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* and or in the 4 bits from the status word as bits 17-20 (remember that
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* the board ignores the chip's top 4 address lines).
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* For example:
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* if the register is @ 0xffe88000, then the top 12 bits are 0xffe00000.
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* to get the 4 bits from the the status word just do status & IEVME_HADDR.
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* suppose the value is "4". Then just shift it left 16 bits to get
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* it into bits 17-20 (e.g. 0x40000). Then or it to get the
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* address of RAM (in our example: 0xffe40000). see the attach routine!
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*
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* In the onboard ie interface, the 24 bit address space is hardwired
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* to be 0xff000000 -> 0xffffffff of KVA. this means that sc_iobase
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* will be 0xff000000. sc_maddr will be where ever we allocate RAM
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* in KVA. note that since the SCP is at a fixed address it means
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* that we have to use some memory at a fixed KVA for the SCP.
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* The Sun PROM leaves a page for us at the end of KVA space.
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*/
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struct ie_softc {
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struct device sc_dev; /* device structure */
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struct ethercom sc_ethercom;/* system ethercom structure */
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#define sc_if sc_ethercom.ec_if /* network-visible interface */
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/* XXX: This is used only during attach. */
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u_int8_t sc_addr[ETHER_ADDR_LEN];
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u_int8_t sc_pad1[2];
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int sc_debug; /* See IEDEBUG */
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/* card dependent functions: */
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void (*reset_586) __P((struct ie_softc *));
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void (*chan_attn) __P((struct ie_softc *));
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void (*run_586) __P((struct ie_softc *));
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void (*sc_bcopy) __P((const void *, void *, u_int));
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void (*sc_bzero) __P((void *, u_int));
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caddr_t sc_iobase; /* KVA of base of 24bit addr space */
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caddr_t sc_maddr; /* KVA of base of chip's RAM */
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u_int sc_msize; /* how much RAM we have/use */
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caddr_t sc_reg; /* KVA of card's register */
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enum ie_hardware hard_type; /* card type */
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int want_mcsetup; /* flag for multicast setup */
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int promisc; /* are we in promisc mode? */
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int ntxbuf; /* number of tx frames/buffers */
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int nframes; /* number of recv frames in use */
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int nrxbuf; /* number of recv buffs in use */
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/*
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* pointers to the 3 major control structures
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*/
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volatile struct ie_sys_conf_ptr *scp;
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volatile struct ie_int_sys_conf_ptr *iscp;
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volatile struct ie_sys_ctl_block *scb;
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/*
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* pointer and size of a block of KVA where the buffers
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* are to be allocated from
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*/
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char * buf_area;
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int buf_area_sz;
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/*
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* Transmit commands, descriptors, and buffers
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*/
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volatile struct ie_xmit_cmd *xmit_cmds[NTXBUF];
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volatile struct ie_xmit_buf *xmit_buffs[NTXBUF];
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char *xmit_cbuffs[NTXBUF];
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int xmit_busy;
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int xmit_free;
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int xchead, xctail;
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/*
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* Receive frames, descriptors, and buffers
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*/
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volatile struct ie_recv_frame_desc *rframes[MXFRAMES];
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volatile struct ie_recv_buf_desc *rbuffs[MXRXBUF];
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char *cbuffs[MXRXBUF];
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int rfhead, rftail, rbhead, rbtail;
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/* Multi-cast stuff */
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int mcast_count;
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struct ie_en_addr mcast_addrs[MAXMCAST + 1];
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};
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extern void ie_attach __P((struct ie_softc *));
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extern int ie_intr __P((void *));
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