diff options
author | dg <dg@FreeBSD.org> | 1993-06-14 22:21:25 +0000 |
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committer | dg <dg@FreeBSD.org> | 1993-06-14 22:21:25 +0000 |
commit | 6e3c656e2a0eece214a8ae05f7df172265fad82b (patch) | |
tree | a6811003d98ad1611230df9e9fe0cb78fd705d32 | |
parent | bcfa18552e9e357cb4fc15a4ed04183a90cd23db (diff) | |
download | FreeBSD-src-6e3c656e2a0eece214a8ae05f7df172265fad82b.zip FreeBSD-src-6e3c656e2a0eece214a8ae05f7df172265fad82b.tar.gz |
Beta release of device driver for SMC/WD80x3 and 3C503 ethernet boards.
-rw-r--r-- | sys/dev/ed/if_ed.c | 1660 | ||||
-rw-r--r-- | sys/dev/ed/if_edreg.h | 781 | ||||
-rw-r--r-- | sys/i386/isa/if_ed.c | 1660 | ||||
-rw-r--r-- | sys/i386/isa/if_edreg.h | 781 |
4 files changed, 4882 insertions, 0 deletions
diff --git a/sys/dev/ed/if_ed.c b/sys/dev/ed/if_ed.c new file mode 100644 index 0000000..1e585db --- /dev/null +++ b/sys/dev/ed/if_ed.c @@ -0,0 +1,1660 @@ +/* + * Device driver for National Semiconductor DS8390 based ethernet + * adapters. By David Greenman, 29-April-1993 + * + * Copyright (C) 1993, David Greenman. This software may be used, modified, + * copied, distributed, and sold, in both source and binary form provided + * that the above copyright and these terms are retained. Under no + * circumstances is the author responsible for the proper functioning + * of this software, nor does the author assume any responsibility + * for damages incurred with its use. + * + * Currently supports the Western Digital/SMC 8003 and 8013 series + * and the 3Com 3c503 + */ + +/* + * Modification history + * + * $Log$ + * + */ + +#include "ed.h" +#if NED > 0 +#include "bpfilter.h" + +#include "param.h" +#include "errno.h" +#include "ioctl.h" +#include "mbuf.h" +#include "socket.h" +#include "syslog.h" + +#include "net/if.h" +#include "net/if_dl.h" +#include "net/if_types.h" +#include "net/netisr.h" + +#ifdef INET +#include "netinet/in.h" +#include "netinet/in_systm.h" +#include "netinet/in_var.h" +#include "netinet/ip.h" +#include "netinet/if_ether.h" +#endif + +#ifdef NS +#include "netns/ns.h" +#include "netns/ns_if.h" +#endif + +#if NBPFILTER > 0 +#include "net/bpf.h" +#include "net/bpfdesc.h" +#endif + +#include "i386/isa/isa.h" +#include "i386/isa/isa_device.h" +#include "i386/isa/icu.h" +#include "i386/isa/if_edreg.h" + +#include "i386/include/pio.h" + + +/* + * ed_softc: per line info and status + */ +struct ed_softc { + struct arpcom arpcom; /* ethernet common */ + + char *type_str; /* pointer to type string */ + u_char vendor; /* interface vendor */ + u_char type; /* interface type code */ + + u_short vector; /* interrupt vector */ + u_short asic_addr; /* ASIC I/O bus address */ + u_short nic_addr; /* NIC (DS8390) I/O bus address */ + + caddr_t smem_start; /* shared memory start address */ + caddr_t smem_end; /* shared memory end address */ + u_long smem_size; /* total shared memory size */ + caddr_t smem_ring; /* start of RX ring-buffer (in smem) */ + + caddr_t bpf; /* BPF "magic cookie" */ + + u_char memwidth; /* width of access to card mem 8 or 16 */ + u_char xmit_busy; /* transmitter is busy */ + u_char txb_cnt; /* Number of transmit buffers */ + u_char txb_next; /* Pointer to next buffer ready to xmit */ + u_short txb_next_len; /* next xmit buffer length */ + u_char data_buffered; /* data has been buffered in interface memory */ + u_char tx_page_start; /* first page of TX buffer area */ + + u_char rec_page_start; /* first page of RX ring-buffer */ + u_char rec_page_stop; /* last page of RX ring-buffer */ + u_char next_packet; /* pointer to next unread RX packet */ +} ed_softc[NED]; + +int ed_attach(), ed_init(), edintr(), ed_ioctl(), ed_probe(), + ed_start(), ed_reset(), ed_watchdog(); + +static void ed_stop(); + +static inline void ed_rint(); +static inline void ed_xmit(); +static inline char *ed_ring_copy(); + +extern int ether_output(); + +struct isa_driver eddriver = { + ed_probe, + ed_attach, + "ed" +}; +/* + * Interrupt conversion table for WD/SMC ASIC + * (IRQ* are defined in icu.h) + */ +static unsigned short ed_intr_mask[] = { + IRQ9, + IRQ3, + IRQ5, + IRQ7, + IRQ10, + IRQ11, + IRQ15, + IRQ4 +}; + +#define ETHER_MIN_LEN 64 +#define ETHER_MAX_LEN 1518 +#define ETHER_ADDR_LEN 6 +#define ETHER_HDR_SIZE 14 + +/* + * Determine if the device is present + * + * on entry: + * a pointer to an isa_device struct + * on exit: + * NULL if device not found + * or # of i/o addresses used (if found) + */ +int +ed_probe(isa_dev) + struct isa_device *isa_dev; +{ + struct ed_softc *sc = &ed_softc[isa_dev->id_unit]; + int i, x; + u_int memsize; + u_char iptr, memwidth, sum, tmp; + + /* + * Setup initial i/o address for ASIC and NIC + */ + sc->asic_addr = isa_dev->id_iobase; + sc->vector = isa_dev->id_irq; + sc->smem_start = (caddr_t)isa_dev->id_maddr; + + /* + * Attempt to do a checksum over the station address PROM. + * This is mapped differently on the WD80x3 and 3C503, so if + * it fails, it might be a 3C503. There is a problem with + * this, though: some clone WD boards don't pass the + * checksum test. Danpex boards for one. We need to do + * additional checking for this case. + */ + for (sum = 0, i = 0; i < 8; ++i) { + sum += inb(sc->asic_addr + ED_WD_PROM + i); + } + + if (sum == ED_WD_ROM_CHECKSUM_TOTAL) { + goto type_WD80x3; + } else { + /* + * Do additional checking to make sure its a 3Com and + * not a broken WD clone + */ + goto type_3Com; + } + +type_WD80x3: + /* + * Looks like a WD/SMC board + */ + + sc->vendor = ED_VENDOR_WD_SMC; + sc->type = inb(sc->asic_addr + ED_WD_CARD_ID); + + sc->nic_addr = sc->asic_addr + ED_WD_NIC_OFFSET; + + /* reset card to force it into a known state. */ + outb(sc->asic_addr + ED_WD_MSR, ED_WD_MSR_RST); + DELAY(100); + outb(sc->asic_addr + ED_WD_MSR, inb(sc->asic_addr + ED_WD_MSR) & ~ED_WD_MSR_RST); + /* wait in the case this card is reading it's EEROM */ + DELAY(5000); + + /* + * Set initial values for width/size. + */ + switch (sc->type) { + case ED_TYPE_WD8003S: + sc->type_str = "WD8003S"; + memsize = 8192; + memwidth = 8; + break; + case ED_TYPE_WD8003E: + sc->type_str = "WD8003E"; + memsize = 8192; + memwidth = 8; + break; + case ED_TYPE_WD8013EBT: + sc->type_str = "WD8013EBT"; + memsize = 16384; + memwidth = 16; + break; + case ED_TYPE_WD8013EB: /* also WD8003EP */ + if (inb(sc->asic_addr + ED_WD_ICR) + & ED_WD_ICR_16BIT) { + memwidth = 16; + memsize = 16384; + sc->type_str = "WD8013EB"; + } else { + sc->type_str = "WD8003EP"; + memsize = 8192; + memwidth = 8; + } + break; + case ED_TYPE_WD8013EBP: + sc->type_str = "WD8013EBP"; + memsize = 16384; + memwidth = 16; + break; + case ED_TYPE_WD8013EPC: + sc->type_str = "WD8013EPC"; + memsize = 16384; + memwidth = 16; + break; + default: + sc->type_str = "unknown"; + memsize = 8192; + memwidth = 8; + break; + } + /* + * Make some adjustments to initial values depending on what is + * found in the ICR. + */ + if ((memwidth==16) + && ((inb(sc->asic_addr + ED_WD_ICR) & ED_WD_ICR_16BIT) == 0)) { + memwidth = 8; + memsize = 8192; + } + if (inb(sc->asic_addr + ED_WD_ICR) & ED_WD_ICR_MSZ) { + memsize = 32768; + } + +#if ED_DEBUG + printf("type=%s width=%d memsize=%d\n",sc->type_str,memwidth,memsize); + for (i=0; i<8; i++) + printf("%x -> %x\n", i, inb(sc->asic_addr + i)); +#endif + + if (sc->type & ED_WD_SOFTCONFIG) { + iptr = inb(isa_dev->id_iobase + 1) & 4 | + ((inb(isa_dev->id_iobase+4) & 0x60) >> 5); + if (ed_intr_mask[iptr] != isa_dev->id_irq) { + printf("ed%d: kernel configured irq doesn't match board configured irq\n", + isa_dev->id_unit); + return(0); + } + outb(isa_dev->id_iobase+4, inb(isa_dev->id_iobase+4) | 0x80); + } + + sc->memwidth = memwidth; + /* + * allocate one xmit buffer if < 16k, two buffers otherwise + */ + if (memsize < 16384) { + sc->smem_ring = sc->smem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE); + sc->txb_cnt = 1; + sc->rec_page_start = ED_TXBUF_SIZE; + } else { + sc->smem_ring = sc->smem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE * 2); + sc->txb_cnt = 2; + sc->rec_page_start = ED_TXBUF_SIZE * 2; + } + sc->smem_size = memsize; + sc->smem_end = sc->smem_start + memsize; + sc->rec_page_stop = memsize / ED_PAGE_SIZE; + sc->tx_page_start = ED_WD_PAGE_OFFSET; + + /* + * Get station address from on-board ROM + */ + for (i = 0; i < ETHER_ADDR_LEN; ++i) + sc->arpcom.ac_enaddr[i] = inb(sc->asic_addr + ED_WD_PROM + i); + + /* + * Set address and enable interface shared memory. + */ + outb(sc->asic_addr + ED_WD_MSR, ((kvtop(sc->smem_start) >> 13) & + ED_WD_MSR_ADDR) | ED_WD_MSR_MENB); + + /* + * Set upper address bits and 8/16 bit access to shared memory + */ + if (sc->type & ED_WD_SOFTCONFIG) { + if (memwidth == 8) { + outb(sc->asic_addr + ED_WD_LAAR, + ((kvtop(sc->smem_start) >> 19) & ED_WD_LAAR_ADDRHI)); + } else { + outb(sc->asic_addr + ED_WD_LAAR, + ED_WD_LAAR_L16EN | ED_WD_LAAR_M16EN | + ((kvtop(sc->smem_start) >> 19) & ED_WD_LAAR_ADDRHI)); + } + } + + /* + * Now zero memory and verify that it is clear + */ + bzero(sc->smem_start, memsize); + + for (i = 0; i < memsize; ++i) + if (sc->smem_start[i]) { + printf("ed%d: failed to clear shared memory at %x - check configuration\n", + isa_dev->id_unit, sc->smem_start + i); + + /* + * Disable 16 bit access to shared memory + */ + if (memwidth == 16) + outb(sc->asic_addr + ED_WD_LAAR, + inb(sc->asic_addr + ED_WD_LAAR) + & ~ED_WD_LAAR_M16EN); + + return(0); + } + + /* + * Disable 16bit access to shared memory - we leave it disabled so + * that 1) machines reboot properly when the board is set + * 16 bit mode and there are conflicting 8bit devices/ROMS + * in the same 128k address space as this boards shared + * memory. and 2) so that other 8 bit devices with shared + * memory can be used in this 128k region, too. + */ + if (memwidth == 16) + outb(sc->asic_addr + ED_WD_LAAR, inb(sc->asic_addr + ED_WD_LAAR) + & ~ED_WD_LAAR_M16EN); + + isa_dev->id_msize = memsize; + return (ED_WD_IO_PORTS); + +type_3Com: + /* + * Looks like a 3Com board + */ + + sc->vendor = ED_VENDOR_3COM; + sc->asic_addr = isa_dev->id_iobase + ED_3COM_ASIC_OFFSET; + sc->nic_addr = isa_dev->id_iobase + ED_3COM_NIC_OFFSET; + + sc->type_str = "3c503"; + + memsize = 8192; + + /* + * Verify that the kernel configured I/O address matches the board + * configured address + */ + switch (sc->asic_addr + ED_3COM_BCFR) { + case ED_3COM_BCFR_300: + if (isa_dev->id_iobase != 0x300) + return(0); + break; + case ED_3COM_BCFR_310: + if (isa_dev->id_iobase != 0x310) + return(0); + break; + case ED_3COM_BCFR_330: + if (isa_dev->id_iobase != 0x330) + return(0); + break; + case ED_3COM_BCFR_350: + if (isa_dev->id_iobase != 0x350) + return(0); + break; + case ED_3COM_BCFR_250: + if (isa_dev->id_iobase != 0x250) + return(0); + break; + case ED_3COM_BCFR_280: + if (isa_dev->id_iobase != 0x280) + return(0); + break; + case ED_3COM_BCFR_2A0: + if (isa_dev->id_iobase != 0x2a0) + return(0); + break; + case ED_3COM_BCFR_2E0: + if (isa_dev->id_iobase != 0x2e0) + return(0); + break; + } + + /* + * Verify that the kernel shared memory address matches the + * board configured address. + */ + switch (sc->asic_addr + ED_3COM_PCFR) { + case ED_3COM_PCFR_DC000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_DC000) + return(0); + break; + case ED_3COM_PCFR_D8000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_D8000) + return(0); + break; + case ED_3COM_PCFR_CC000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_CC000) + return(0); + break; + case ED_3COM_PCFR_C8000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_C8000) + return(0); + break; + } + + /* + * Reset NIC and ASIC + */ + outb(sc->asic_addr + ED_3COM_CR, ED_3COM_CR_RST); + /* + * Verify that reset bit was set + */ + if ((inb(sc->asic_addr + ED_3COM_CR) & ED_3COM_CR_RST) == 0) + return (0); + /* + * Wait for a while, then un-reset it + */ + DELAY(5000); + outb(sc->asic_addr + ED_3COM_CR, 0); + + /* + * Verify that the bit cleared + */ + if (inb(sc->asic_addr + ED_3COM_CR) & ED_3COM_CR_RST) + return (0); + + /* + * Wait a bit for the NIC to recover from the reset + */ + DELAY(5000); + + /* + * Determine if this is an 8bit or 16bit board + */ + /* XXX - either this code is broken...or the hardware is... */ + /* it always comes up 8bit */ + /* + * select page 0 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + /* + * Attempt to clear WTS bit. If it doesn't clear, then this is a + * 16bit board. + */ + outb(sc->nic_addr + ED_P0_DCR, 0); + /* + * select page 2 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_2|ED_CR_RD2|ED_CR_STP); + /* + * The 3c503 forces the WTS bit to a one if this is a 16bit board + */ + if (inb(sc->nic_addr + ED_P2_DCR) & ED_DCR_WTS) + memwidth = 16; + else + memwidth = 8; + +#if 0 +printf(" (%dbit)",memwidth); +#endif + /* + * select page 0 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + + sc->txb_cnt = 1; + + sc->tx_page_start = ED_3COM_PAGE_OFFSET; + sc->rec_page_start = ED_TXBUF_SIZE + ED_3COM_PAGE_OFFSET; + sc->rec_page_stop = memsize / ED_PAGE_SIZE + ED_3COM_PAGE_OFFSET; + + sc->smem_size = memsize; + sc->smem_end = sc->smem_start + memsize; + sc->smem_ring = sc->smem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE); + + sc->memwidth = memwidth; + + /* + * Initialize GA page start/stop registers. Probably only needed + * if doing DMA, but what the hell. + */ + outb(sc->asic_addr + ED_3COM_PSTR, sc->rec_page_start); + outb(sc->asic_addr + ED_3COM_PSPR, sc->rec_page_stop); + + /* + * Set IRQ. 3c503 only allows a choice of irq 2-5. + */ + switch (isa_dev->id_irq) { + case IRQ2: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ2); + break; + case IRQ3: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ3); + break; + case IRQ4: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ4); + break; + case IRQ5: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ5); + break; + default: + printf("ed0: Invalid irq configuration\n"); + return(0); + } + + /* + * Initialize GA configuration register. Set bank and enable smem. + */ + outb(sc->asic_addr + ED_3COM_GACFR, ED_3COM_GACFR_RSEL | + ED_3COM_GACFR_MBS0); + + /* + * Initialize "Vector Pointer" registers. These gawd-awful things + * are compared to 20 bits of the address on ISA, and if they + * match, the shared memory is disabled. We set them to + * 0xffff0...allegedly the reset vector. + */ + outb(sc->asic_addr + ED_3COM_VPTR2, 0xff); + outb(sc->asic_addr + ED_3COM_VPTR1, 0xff); + outb(sc->asic_addr + ED_3COM_VPTR0, 0x00); + + /* + * Get station address from on-board ROM + */ + /* + * First, map ethernet address PROM over the top of where the NIC + * registers normally appear. + */ + outb(sc->asic_addr + ED_3COM_CR, ED_3COM_CR_EALO); + + for (i = 0; i < ETHER_ADDR_LEN; ++i) + sc->arpcom.ac_enaddr[i] = inb(sc->nic_addr + i); + + /* + * Unmap PROM - select NIC registers + */ + outb(sc->asic_addr + ED_3COM_CR, 0); + + /* + * Zero memory and verify that it is clear + */ +#if 0 +{ char test_buf[1024]; +printf("starting write\n"); + for (i = 0; i < 8*8192; ++i) + bcopy(test_buf, sc->smem_start, 1024); +printf("starting read\n"); + for (i = 0; i < 8*8192; ++i) + bcopy(sc->smem_start, test_buf, 1024); +printf("done.\n"); +} +#endif + + bzero(sc->smem_start, memsize); + + for (i = 0; i < memsize; ++i) + if (sc->smem_start[i]) { + printf("ed%d: failed to clear shared memory at %x - check configuration\n", + isa_dev->id_unit, sc->smem_start + i); + return(0); + } + + isa_dev->id_msize = memsize; + return(ED_3COM_IO_PORTS); +} + +/* + * Install interface into kernel networking data structures + */ +int +ed_attach(isa_dev) + struct isa_device *isa_dev; +{ + struct ed_softc *sc = &ed_softc[isa_dev->id_unit]; + struct ifnet *ifp = &sc->arpcom.ac_if; + struct ifaddr *ifa; + struct sockaddr_dl *sdl; + + /* + * Set interface to stopped condition (reset) + */ + ed_stop(isa_dev->id_unit); + + /* + * Initialize ifnet structure + */ + ifp->if_unit = isa_dev->id_unit; + ifp->if_name = "ed" ; + ifp->if_mtu = ETHERMTU; + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS ; + ifp->if_init = ed_init; + ifp->if_output = ether_output; + ifp->if_start = ed_start; + ifp->if_ioctl = ed_ioctl; + ifp->if_reset = ed_reset; + ifp->if_watchdog = ed_watchdog; + + if_attach(ifp); + +#if NBPFILTER > 0 + bpfattach(&sc->bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); +#endif + + /* + * Search down the ifa address list looking for the AF_LINK type entry + */ + ifa = ifp->if_addrlist; + while ((ifa != 0) && (ifa->ifa_addr != 0) && + (ifa->ifa_addr->sa_family != AF_LINK)) + ifa = ifa->ifa_next; + + /* + * If we find an AF_LINK type entry, we well fill in the hardware addr + */ + if ((ifa != 0) && (ifa->ifa_addr != 0)) { + /* + * Fill in the link level address for this interface + */ + sdl = (struct sockaddr_dl *)ifa->ifa_addr; + sdl->sdl_type = IFT_ETHER; + sdl->sdl_alen = ETHER_ADDR_LEN; + sdl->sdl_slen = 0; + bcopy(sc->arpcom.ac_enaddr, LLADDR(sdl), ETHER_ADDR_LEN); + } + + /* + * Print additional info when attached + */ + printf(" enet %s type %s", ether_sprintf(sc->arpcom.ac_enaddr), + sc->type_str); +} + +/* + * Reset interface. + */ +int +ed_reset(unit, uban) + int unit; +{ + int s; + + s = splnet(); + + /* + * Stop interface and re-initialize. + */ + ed_stop(unit); + ed_init(unit); + + s = splx(s); +} + +/* + * Take interface offline. + */ +void +ed_stop(unit) + int unit; +{ + struct ed_softc *sc = &ed_softc[unit]; + int n = 5000; + + /* + * Stop everything on the interface, and select page 0 registers. + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + + /* + * Wait for interface to enter stopped state, but limit # of checks + * to 'n' (about 5ms). It shouldn't even take 5us on modern + * DS8390's, but just in case it's an old one. + */ + while ((inb(sc->nic_addr + ED_P0_ISR) & ED_ISR_RST) == 0) { + if (--n == 0) + break; + } +} + +int +ed_watchdog(unit) + int unit; +{ + log(LOG_ERR, "ed%d: device timeout\n", unit); + + ed_reset(unit); +} + +/* + * Initialize device. + */ +ed_init(unit) + int unit; +{ + struct ed_softc *sc = &ed_softc[unit]; + struct ifnet *ifp = &sc->arpcom.ac_if; + int i, s; + u_char command; + + + /* address not known */ + if (ifp->if_addrlist == (struct ifaddr *)0) return; + + /* + * Initialize the NIC in the exact order outlined in the NS manual. + * This init procedure is "mandatory"...don't change what or when + * things happen. + */ + s = splnet(); + + /* reset transmitter flags */ + sc->data_buffered = 0; + sc->xmit_busy = 0; + sc->arpcom.ac_if.if_timer = 0; + + sc->txb_next = 0; + + /* This variable is used below - don't move this assignment */ + sc->next_packet = sc->rec_page_start + 1; + + /* + * Set interface for page 0, Remote DMA complete, Stopped + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + + if (sc->memwidth == 16) { + /* + * Set FIFO threshold to 8, No auto-init Remote DMA, + * byte order=80x86, word-wide DMA xfers + */ + outb(sc->nic_addr + ED_P0_DCR, ED_DCR_FT1|ED_DCR_WTS); + } else { + /* + * Same as above, but byte-wide DMA xfers + */ + outb(sc->nic_addr + ED_P0_DCR, ED_DCR_FT1); + } + + /* + * Clear Remote Byte Count Registers + */ + outb(sc->nic_addr + ED_P0_RBCR0, 0); + outb(sc->nic_addr + ED_P0_RBCR1, 0); + + /* + * Enable reception of broadcast packets + */ + outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB); + + /* + * Place NIC in internal loopback mode + */ + outb(sc->nic_addr + ED_P0_TCR, ED_TCR_LB0); + + /* + * Initialize transmit/receive (ring-buffer) Page Start + */ + outb(sc->nic_addr + ED_P0_TPSR, sc->tx_page_start); + outb(sc->nic_addr + ED_P0_PSTART, sc->rec_page_start); + + /* + * Initialize Receiver (ring-buffer) Page Stop and Boundry + */ + outb(sc->nic_addr + ED_P0_PSTOP, sc->rec_page_stop); + outb(sc->nic_addr + ED_P0_BNRY, sc->rec_page_start); + + /* + * Clear all interrupts. A '1' in each bit position clears the + * corresponding flag. + */ + outb(sc->nic_addr + ED_P0_ISR, 0xff); + + /* + * Enable the following interrupts: receive/transmit complete, + * receive/transmit error, and Receiver OverWrite. + * + * Counter overflow and Remote DMA complete are *not* enabled. + */ + outb(sc->nic_addr + ED_P0_IMR, + ED_IMR_PRXE|ED_IMR_PTXE|ED_IMR_RXEE|ED_IMR_TXEE|ED_IMR_OVWE); + + /* + * Program Command Register for page 1 + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_1|ED_CR_RD2|ED_CR_STP); + + /* + * Copy out our station address + */ + for (i = 0; i < ETHER_ADDR_LEN; ++i) + outb(sc->nic_addr + ED_P1_PAR0 + i, sc->arpcom.ac_enaddr[i]); + +#if NBPFILTER > 0 + /* + * Initialize multicast address hashing registers to accept + * all multicasts (only used when in promiscuous mode) + */ + for (i = 0; i < 8; ++i) + outb(sc->nic_addr + ED_P1_MAR0 + i, 0xff); +#endif + + /* + * Set Current Page pointer to next_packet (initialized above) + */ + outb(sc->nic_addr + ED_P1_CURR, sc->next_packet); + + /* + * Set Command Register for page 0, Remote DMA complete, + * and interface Start. + */ + outb(sc->nic_addr + ED_P1_CR, ED_CR_RD2|ED_CR_STA); + + /* + * Take interface out of loopback + */ + outb(sc->nic_addr + ED_P0_TCR, 0); + + /* + * Set 'running' flag, and clear output active flag. + */ + ifp->if_flags |= IFF_RUNNING; + ifp->if_flags &= ~IFF_OACTIVE; + + /* + * ...and attempt to start output + */ + ed_start(ifp); + + (void) splx(s); +} + +static inline void ed_xmit(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc = &ed_softc[ifp->if_unit]; + u_short len = sc->txb_next_len; + + /* + * Set NIC for page 0 register access + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + + /* + * Set TX buffer start page + */ + outb(sc->nic_addr + ED_P0_TPSR, sc->tx_page_start + + sc->txb_next * ED_TXBUF_SIZE); + + /* + * Set TX length + */ + outb(sc->nic_addr + ED_P0_TBCR0, len & 0xff); + outb(sc->nic_addr + ED_P0_TBCR1, len >> 8); + + /* + * Set page 0, Remote DMA complete, Transmit Packet, and Start + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_TXP|ED_CR_STA); + + sc->xmit_busy = 1; + sc->data_buffered = 0; + + if ((sc->txb_next == 0) && (sc->txb_cnt > 1)) + sc->txb_next = 1; + else + sc->txb_next = 0; + + /* + * Set a timer just in case we never hear from the board again + */ + ifp->if_timer = 2; +} + +/* + * Start output on interface. + * We make two assumptions here: + * 1) that the current priority is set to splnet _before_ this code + * is called *and* is returned to the appropriate priority after + * return + * 2) that the IFF_OACTIVE flag is checked before this code is called + * (i.e. that the output part of the interface is idle) + */ +int +ed_start(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc = &ed_softc[ifp->if_unit]; + struct mbuf *m0, *m; + caddr_t buffer; + int len; + u_char laar_tmp; + +outloop: + if (sc->data_buffered) + if (sc->xmit_busy) { + ifp->if_flags |= IFF_OACTIVE; + return; + } else { + /* + * Note that ed_xmit() resets the data_buffered flag + * before returning + */ + ed_xmit(ifp); + } + + IF_DEQUEUE(&sc->arpcom.ac_if.if_snd, m); + if (m == 0) { + /* + * The following isn't pretty; we are using the !OACTIVE flag to + * indicate to the outside world that we can accept an additional + * packet rather than that the transmitter is _actually_ + * active. Indeed, the transmitter may be active, but if we haven't + * filled the secondary buffer with data then we still want to + * accept more. + * Note that it isn't necessary to test the data_buffered flag - + * we wouldn't have tried to de-queue the packet in the first place + * if it was set. + */ + ifp->if_flags &= ~IFF_OACTIVE; + return; + } + + /* + * Copy the mbuf chain into the transmit buffer + */ + /* + * Enable 16bit access to shared memory on WD/SMC boards + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + laar_tmp = inb(sc->asic_addr + ED_WD_LAAR); + outb(sc->asic_addr + ED_WD_LAAR, laar_tmp | ED_WD_LAAR_M16EN); + } + + buffer = sc->smem_start + (sc->txb_next * ED_TXBUF_SIZE * ED_PAGE_SIZE); + len = 0; + for (m0 = m; m != 0; m = m->m_next) { + bcopy(mtod(m, caddr_t), buffer, m->m_len); + buffer += m->m_len; + len += m->m_len; + } + + /* + * Restore previous shared mem access type + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + outb(sc->asic_addr + ED_WD_LAAR, laar_tmp); + } + + sc->txb_next_len = MAX(len, ETHER_MIN_LEN); + + if (sc->txb_cnt > 1) + /* + * only set 'buffered' flag if doing multiple buffers + */ + sc->data_buffered = 1; + + if (sc->xmit_busy == 0) + ed_xmit(ifp); + /* + * If there is BPF support in the configuration, tap off here. + * The following has support for converting trailer packets + * back to normal. + */ +#if NBPFILTER > 0 + if (sc->bpf) { + u_short etype; + int off, datasize, resid; + struct ether_header *eh; + struct trailer_header { + u_short ether_type; + u_short ether_residual; + } trailer_header; + char ether_packet[ETHER_MAX_LEN]; + char *ep; + + ep = ether_packet; + + /* + * We handle trailers below: + * Copy ether header first, then residual data, + * then data. Put all this in a temporary buffer + * 'ether_packet' and send off to bpf. Since the + * system has generated this packet, we assume + * that all of the offsets in the packet are + * correct; if they're not, the system will almost + * certainly crash in m_copydata. + * We make no assumptions about how the data is + * arranged in the mbuf chain (i.e. how much + * data is in each mbuf, if mbuf clusters are + * used, etc.), which is why we use m_copydata + * to get the ether header rather than assume + * that this is located in the first mbuf. + */ + /* copy ether header */ + m_copydata(m0, 0, sizeof(struct ether_header), ep); + eh = (struct ether_header *) ep; + ep += sizeof(struct ether_header); + etype = ntohs(eh->ether_type); + if (etype >= ETHERTYPE_TRAIL && + etype < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { + datasize = ((etype - ETHERTYPE_TRAIL) << 9); + off = datasize + sizeof(struct ether_header); + + /* copy trailer_header into a data structure */ + m_copydata(m0, off, sizeof(struct trailer_header), + &trailer_header.ether_type); + + /* copy residual data */ + m_copydata(m0, off+sizeof(struct trailer_header), + resid = ntohs(trailer_header.ether_residual) - + sizeof(struct trailer_header), ep); + ep += resid; + + /* copy data */ + m_copydata(m0, sizeof(struct ether_header), + datasize, ep); + ep += datasize; + + /* restore original ether packet type */ + eh->ether_type = trailer_header.ether_type; + + bpf_tap(sc->bpf, ether_packet, ep - ether_packet); + } else + bpf_mtap(sc->bpf, m0); + } +#endif + + m_freem(m0); + + if (sc->txb_cnt > 1) + goto outloop; + else { + ifp->if_flags |= IFF_OACTIVE; + return; + } +} + +/* + * Ethernet interface receiver interrupt. + */ +static inline void /* only called from one place, so may as well integrate */ +ed_rint(unit) + int unit; +{ + register struct ed_softc *sc = &ed_softc[unit]; + u_char boundry, current; + u_short len; + struct ed_ring *packet_ptr; + + /* + * Set NIC to page 1 registers to get 'current' pointer + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_1|ED_CR_RD2|ED_CR_STA); + + /* + * 'sc->next_packet' is the logical beginning of the ring-buffer - i.e. + * it points to where new data has been buffered. The 'CURR' + * (current) register points to the logical end of the ring-buffer + * - i.e. it points to where additional new data will be added. + * We loop here until the logical beginning equals the logical + * end (or in other words, until the ring-buffer is empty). + */ + while (sc->next_packet != inb(sc->nic_addr + ED_P1_CURR)) { + + /* get pointer to this buffer header structure */ + packet_ptr = (struct ed_ring *)(sc->smem_ring + + (sc->next_packet - sc->rec_page_start) * ED_PAGE_SIZE); + + /* + * The byte count includes the FCS - Frame Check Sequence (a + * 32 bit CRC). + */ + len = packet_ptr->count; + if ((len >= ETHER_MIN_LEN) && (len <= ETHER_MAX_LEN)) { + /* + * Go get packet. len - 4 removes CRC from length. + * (packet_ptr + 1) points to data just after the packet ring + * header (+4 bytes) + */ + ed_get_packet(sc, (caddr_t)(packet_ptr + 1), len - 4); + ++sc->arpcom.ac_if.if_ipackets; + } else { + /* + * Really BAD...probably indicates that the ring pointers + * are corrupted. Also seen on early rev chips under + * high load - the byte order of the length gets switched. + */ + log(LOG_ERR, + "ed%d: shared memory corrupt - invalid packet length %d\n", + unit, len); + ed_reset(unit); + return; + } + + /* + * Update next packet pointer + */ + sc->next_packet = packet_ptr->next_packet; + + /* + * Update NIC boundry pointer - being careful to keep it + * one buffer behind. (as recommended by NS databook) + */ + boundry = sc->next_packet - 1; + if (boundry < sc->rec_page_start) + boundry = sc->rec_page_stop - 1; + + /* + * Set NIC to page 0 registers to update boundry register + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + + outb(sc->nic_addr + ED_P0_BNRY, boundry); + + /* + * Set NIC to page 1 registers before looping to top (prepare to + * get 'CURR' current pointer) + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_1|ED_CR_RD2|ED_CR_STA); + } +} + +/* + * Ethernet interface interrupt processor + */ +int +edintr(unit) + int unit; +{ + struct ed_softc *sc = &ed_softc[unit]; + u_char isr; + + /* + * Set NIC to page 0 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + + /* + * loop until there are no more new interrupts + */ + while (isr = inb(sc->nic_addr + ED_P0_ISR)) { + + /* + * reset all the bits that we are 'acknowleging' + * by writing a '1' to each bit position that was set + * (writing a '1' *clears* the bit) + */ + outb(sc->nic_addr + ED_P0_ISR, isr); + + /* + * Transmit error. If a TX completed with an error, we end up + * throwing the packet away. Really the only error that is + * possible is excessive collisions, and in this case it is + * best to allow the automatic mechanisms of TCP to backoff + * the flow. Of course, with UDP we're screwed, but this is + * expected when a network is heavily loaded. + */ + if (isr & ED_ISR_TXE) { + u_char tsr = inb(sc->nic_addr + ED_P0_TSR); + u_char ncr = inb(sc->nic_addr + ED_P0_NCR); + + /* + * Excessive collisions (16) + */ + if ((tsr & ED_TSR_ABT) && (ncr == 0)) { + /* + * When collisions total 16, the P0_NCR will + * indicate 0, and the TSR_ABT is set. + */ + sc->arpcom.ac_if.if_collisions += 16; + } else + sc->arpcom.ac_if.if_collisions += ncr; + + /* + * update output errors counter + */ + ++sc->arpcom.ac_if.if_oerrors; + + /* + * reset tx busy and output active flags + */ + sc->xmit_busy = 0; + sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; + + /* + * reset watchdog timer + */ + sc->arpcom.ac_if.if_timer = 0; + } + + + /* + * Receiver Error. One or more of: CRC error, frame alignment error + * FIFO overrun, or missed packet. + */ + if (isr & ED_ISR_RXE) { + ++sc->arpcom.ac_if.if_ierrors; + } + + /* + * Overwrite warning. In order to make sure that a lockup + * of the local DMA hasn't occurred, we reset and + * re-init the NIC. The NSC manual suggests only a + * partial reset/re-init is necessary - but some + * chips seem to want more. The DMA lockup has been + * seen only with early rev chips - Methinks this + * bug was fixed in later revs. -DG + */ + if (isr & ED_ISR_OVW) { + ++sc->arpcom.ac_if.if_ierrors; + log(LOG_WARNING, + "ed%d: warning - receiver ring buffer overrun\n", + unit); + /* + * Stop/reset/re-init NIC + */ + ed_reset(unit); + } + + /* + * Transmission completed normally. + */ + if (isr & ED_ISR_PTX) { + + /* + * reset tx busy and output active flags + */ + sc->xmit_busy = 0; + sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; + + /* + * reset watchdog timer + */ + sc->arpcom.ac_if.if_timer = 0; + + /* + * Update total number of successfully transmitted + * packets. + */ + ++sc->arpcom.ac_if.if_opackets; + + /* + * Add in total number of collisions on last + * transmission. + */ + sc->arpcom.ac_if.if_collisions += inb(sc->nic_addr + + ED_P0_TBCR0); + } + + /* + * Receive Completion. Go and get the packet. + * XXX - Doing this on an error is dubious because there + * shouldn't be any data to get (we've configured the + * interface to not accept packets with errors). + */ + if (isr & (ED_ISR_PRX|ED_ISR_RXE)) { + /* + * Enable access to shared memory on WD/SMC boards + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + outb(sc->asic_addr + ED_WD_LAAR, + inb(sc->asic_addr + ED_WD_LAAR) + | ED_WD_LAAR_M16EN); + } + + ed_rint (unit); + + /* + * Disable access to shared memory + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + outb(sc->asic_addr + ED_WD_LAAR, + inb(sc->asic_addr + ED_WD_LAAR) + & ~ED_WD_LAAR_M16EN); + } + } + + /* + * If it looks like the transmitter can take more data, + * attempt to start output on the interface. If data is + * already buffered and ready to go, send it first. + */ + if ((sc->arpcom.ac_if.if_flags & IFF_OACTIVE) == 0) { + if (sc->data_buffered) + ed_xmit(&sc->arpcom.ac_if); + ed_start(&sc->arpcom.ac_if); + } + + /* + * return NIC CR to standard state before looping back + * to top: page 0, remote DMA complete, start + * (toggling the TXP bit off, even if was just set in the + * transmit routine, is *okay* - it is 'edge' triggered + * from low to high) + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + } +} + +/* + * Process an ioctl request. This code needs some work - it looks + * pretty ugly. + */ +int +ed_ioctl(ifp, command, data) + register struct ifnet *ifp; + int command; + caddr_t data; +{ + register struct ifaddr *ifa = (struct ifaddr *)data; + struct ed_softc *sc = &ed_softc[ifp->if_unit]; + struct ifreq *ifr = (struct ifreq *)data; + int s, error = 0; + + s = splnet(); + + switch (command) { + + case SIOCSIFADDR: + ifp->if_flags |= IFF_UP; + + switch (ifa->ifa_addr->sa_family) { +#ifdef INET + case AF_INET: + ed_init(ifp->if_unit); /* before arpwhohas */ + /* + * See if another station has *our* IP address. + * i.e.: There is an address conflict! If a + * conflict exists, a message is sent to the + * console. + */ + ((struct arpcom *)ifp)->ac_ipaddr = + IA_SIN(ifa)->sin_addr; + arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); + break; +#endif +#ifdef NS + /* + * XXX - This code is probably wrong + */ + case AF_NS: + { + register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); + + if (ns_nullhost(*ina)) + ina->x_host = + *(union ns_host *)(sc->arpcom.ac_enaddr); + else { + /* + * + */ + bcopy((caddr_t)ina->x_host.c_host, + (caddr_t)sc->arpcom.ac_enaddr, + sizeof(sc->arpcom.ac_enaddr)); + } + /* + * Set new address + */ + ed_init(ifp->if_unit); + break; + } +#endif + default: + ed_init(ifp->if_unit); + break; + } + break; + + case SIOCSIFFLAGS: + /* + * If interface is marked down and it is running, then stop it + */ + if (((ifp->if_flags & IFF_UP) == 0) && + (ifp->if_flags & IFF_RUNNING)) { + ed_stop(ifp->if_unit); + ifp->if_flags &= ~IFF_RUNNING; + } else { + /* + * If interface is marked up and it is stopped, then start it + */ + if ((ifp->if_flags & IFF_UP) && + ((ifp->if_flags & IFF_RUNNING) == 0)) + ed_init(ifp->if_unit); + } +#if NBPFILTER > 0 + if (ifp->if_flags & IFF_PROMISC) { + /* + * Set promiscuous mode on interface. + * XXX - for multicasts to work, we would need to + * write 1's in all bits of multicast + * hashing array. For now we assume that + * this was done in ed_init(). + */ + outb(sc->nic_addr + ED_P0_RCR, + ED_RCR_PRO|ED_RCR_AM|ED_RCR_AB); + } else + /* + * XXX - for multicasts to work, we would need to + * rewrite the multicast hashing array with the + * proper hash (would have been destroyed above). + */ + outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB); +#endif + break; + + default: + error = EINVAL; + } + (void) splx(s); + return (error); +} + +/* + * Macro to calculate a new address within shared memory when given an offset + * from an address, taking into account ring-wrap. + */ +#define ringoffset(sc, start, off, type) \ + ((type)( ((caddr_t)(start)+(off) >= (sc)->smem_end) ? \ + (((caddr_t)(start)+(off))) - (sc)->smem_end \ + + (sc)->smem_ring: \ + ((caddr_t)(start)+(off)) )) + +/* + * Retreive packet from shared memory and send to the next level up via + * ether_input(). If there is a BPF listener, give a copy to BPF, too. + */ +ed_get_packet(sc, buf, len) + struct ed_softc *sc; + char *buf; + u_short len; +{ + struct ether_header *eh; + struct mbuf *m, *head, *ed_ring_to_mbuf(); + u_short off; + int resid; + u_short etype; + struct trailer_header { + u_short trail_type; + u_short trail_residual; + } trailer_header; + + /* Allocate a header mbuf */ + MGETHDR(m, M_DONTWAIT, MT_DATA); + if (m == 0) + goto bad; + m->m_pkthdr.rcvif = &sc->arpcom.ac_if; + m->m_pkthdr.len = len; + m->m_len = 0; + head = m; + + eh = (struct ether_header *)buf; + + /* The following sillines is to make NFS happy */ +#define EROUND ((sizeof(struct ether_header) + 3) & ~3) +#define EOFF (EROUND - sizeof(struct ether_header)) + + /* + * The following assumes there is room for + * the ether header in the header mbuf + */ + head->m_data += EOFF; + bcopy(buf, mtod(head, caddr_t), sizeof(struct ether_header)); + buf += sizeof(struct ether_header); + head->m_len += sizeof(struct ether_header); + len -= sizeof(struct ether_header); + + etype = ntohs((u_short)eh->ether_type); + + /* + * Deal with trailer protocol: + * If trailer protocol, calculate the datasize as 'off', + * which is also the offset to the trailer header. + * Set resid to the amount of packet data following the + * trailer header. + * Finally, copy residual data into mbuf chain. + */ + if (etype >= ETHERTYPE_TRAIL && + etype < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { + + off = (etype - ETHERTYPE_TRAIL) << 9; + if ((off + sizeof(struct trailer_header)) > len) + goto bad; /* insanity */ + + eh->ether_type = *ringoffset(sc, buf, off, u_short *); + resid = ntohs(*ringoffset(sc, buf, off+2, u_short *)); + + if ((off + resid) > len) goto bad; /* insanity */ + + resid -= sizeof(struct trailer_header); + if (resid < 0) goto bad; /* insanity */ + + m = ed_ring_to_mbuf(sc, ringoffset(sc, buf, off+4, char *), head, resid); + if (m == 0) goto bad; + + len = off; + head->m_pkthdr.len -= 4; /* subtract trailer header */ + } + + /* + * Pull packet off interface. Or if this was a trailer packet, + * the data portion is appended. + */ + m = ed_ring_to_mbuf(sc, buf, m, len); + if (m == 0) goto bad; + +#if NBPFILTER > 0 + /* + * Check if there's a BPF listener on this interface. + * If so, hand off the raw packet to bpf. + */ + if (sc->bpf) { + bpf_mtap(sc->bpf, head); + + /* + * Note that the interface cannot be in promiscuous mode if + * there are no BPF listeners. And if we are in promiscuous + * mode, we have to check if this packet is really ours. + * + * XXX This test does not support multicasts. + */ + if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) && + bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, + sizeof(eh->ether_dhost)) != 0 && + bcmp(eh->ether_dhost, etherbroadcastaddr, + sizeof(eh->ether_dhost)) != 0) { + + m_freem(head); + return; + } + } +#endif + + /* + * Fix up data start offset in mbuf to point past ether header + */ + m_adj(head, sizeof(struct ether_header)); + + /* + * silly ether_input routine needs 'type' in host byte order + */ + eh->ether_type = ntohs(eh->ether_type); + + ether_input(&sc->arpcom.ac_if, eh, head); + return; + +bad: if (head) + m_freem(head); + return; +} + +/* + * Supporting routines + */ + +/* + * Given a source and destination address, copy 'amount' of a packet from + * the ring buffer into a linear destination buffer. Takes into account + * ring-wrap. + */ +static inline char * +ed_ring_copy(sc,src,dst,amount) + struct ed_softc *sc; + char *src; + char *dst; + u_short amount; +{ + u_short tmp_amount; + + /* does copy wrap to lower addr in ring buffer? */ + if (src + amount > sc->smem_end) { + tmp_amount = sc->smem_end - src; + bcopy(src,dst,tmp_amount); /* copy amount up to end of smem */ + amount -= tmp_amount; + src = sc->smem_ring; + dst += tmp_amount; + } + + bcopy(src, dst, amount); + + return(src + amount); +} + +/* + * Copy data from receive buffer to end of mbuf chain + * allocate additional mbufs as needed. return pointer + * to last mbuf in chain. + * sc = ed info (softc) + * src = pointer in ed ring buffer + * dst = pointer to last mbuf in mbuf chain to copy to + * amount = amount of data to copy + */ +struct mbuf * +ed_ring_to_mbuf(sc,src,dst,total_len) + struct ed_softc *sc; + char *src; + struct mbuf *dst; + u_short total_len; +{ + register struct mbuf *m = dst; + + while (total_len) { + register u_short amount = min(total_len, M_TRAILINGSPACE(m)); + + if (amount == 0) { /* no more data in this mbuf, alloc another */ + /* + * if there is enough data for an mbuf cluster, attempt + * to allocate one of those, otherwise, a regular mbuf + * will do. + */ + dst = m; + MGET(m, M_DONTWAIT, MT_DATA); + if (m == 0) + return (0); + + if (total_len >= MINCLSIZE) + MCLGET(m, M_DONTWAIT); + + m->m_len = 0; + dst->m_next = m; + amount = min(total_len, M_TRAILINGSPACE(m)); + } + + src = ed_ring_copy(sc, src, mtod(m, caddr_t) + m->m_len, amount); + + m->m_len += amount; + total_len -= amount; + + } + return (m); +} +#endif + diff --git a/sys/dev/ed/if_edreg.h b/sys/dev/ed/if_edreg.h new file mode 100644 index 0000000..00d36b3 --- /dev/null +++ b/sys/dev/ed/if_edreg.h @@ -0,0 +1,781 @@ +/* + * National Semiconductor DS8390 NIC register definitions + */ + +/* + * Page 0 register offsets + */ +#define ED_P0_CR 0x00 /* Command Register */ + +#define ED_P0_CLDA0 0x01 /* Current Local DMA Addr low (read) */ +#define ED_P0_PSTART 0x01 /* Page Start register (write) */ + +#define ED_P0_CLDA1 0x02 /* Current Local DMA Addr high (read) */ +#define ED_P0_PSTOP 0x02 /* Page Stop register (write) */ + +#define ED_P0_BNRY 0x03 /* Boundary Pointer */ + +#define ED_P0_TSR 0x04 /* Transmit Status Register (read) */ +#define ED_P0_TPSR 0x04 /* Transmit Page Start (write) */ + +#define ED_P0_NCR 0x05 /* Number of Collisions Reg (read) */ +#define ED_P0_TBCR0 0x05 /* Transmit Byte count, low (write) */ + +#define ED_P0_FIFO 0x06 /* FIFO register (read) */ +#define ED_P0_TBCR1 0x06 /* Transmit Byte count, high (write) */ + +#define ED_P0_ISR 0x07 /* Interrupt Status Register */ + +#define ED_P0_CRDA0 0x08 /* Current Remote DMA Addr low (read) */ +#define ED_P0_RSAR0 0x08 /* Remote Start Address low (write) */ + +#define ED_P0_CRDA1 0x09 /* Current Remote DMA Addr high (read) */ +#define ED_P0_RSAR1 0x09 /* Remote Start Address high (write) */ + +#define ED_P0_RBCR0 0x0a /* Remote Byte Count low (write) */ + +#define ED_P0_RBCR1 0x0b /* Remote Byte Count high (write) */ + +#define ED_P0_RSR 0x0c /* Receive Status (read) */ +#define ED_P0_RCR 0x0c /* Receive Configuration Reg (write) */ + +#define ED_P0_CNTR0 0x0d /* frame alignment error counter (read) */ +#define ED_P0_TCR 0x0d /* Transmit Configuration Reg (write) */ + +#define ED_P0_CNTR1 0x0e /* CRC error counter (read) */ +#define ED_P0_DCR 0x0e /* Data Configuration Reg (write) */ + +#define ED_P0_CNTR2 0x0f /* missed packet counter (read) */ +#define ED_P0_IMR 0x0f /* Interrupt Mask Register (write) */ + +/* + * Page 1 register offsets + */ +#define ED_P1_CR 0x00 /* Command Register */ +#define ED_P1_PAR0 0x01 /* Physical Address Register 0 */ +#define ED_P1_PAR1 0x02 /* Physical Address Register 1 */ +#define ED_P1_PAR2 0x03 /* Physical Address Register 2 */ +#define ED_P1_PAR3 0x04 /* Physical Address Register 3 */ +#define ED_P1_PAR4 0x05 /* Physical Address Register 4 */ +#define ED_P1_PAR5 0x06 /* Physical Address Register 5 */ +#define ED_P1_CURR 0x07 /* Current RX ring-buffer page */ +#define ED_P1_MAR0 0x08 /* Multicast Address Register 0 */ +#define ED_P1_MAR1 0x09 /* Multicast Address Register 1 */ +#define ED_P1_MAR2 0x0a /* Multicast Address Register 2 */ +#define ED_P1_MAR3 0x0b /* Multicast Address Register 3 */ +#define ED_P1_MAR4 0x0c /* Multicast Address Register 4 */ +#define ED_P1_MAR5 0x0d /* Multicast Address Register 5 */ +#define ED_P1_MAR6 0x0e /* Multicast Address Register 6 */ +#define ED_P1_MAR7 0x0f /* Multicast Address Register 7 */ + +/* + * Page 2 register offsets + */ +#define ED_P2_CR 0x00 /* Command Register */ +#define ED_P2_PSTART 0x01 /* Page Start (read) */ +#define ED_P2_CLDA0 0x01 /* Current Local DMA Addr 0 (write) */ +#define ED_P2_PSTOP 0x02 /* Page Stop (read) */ +#define ED_P2_CLDA1 0x02 /* Current Local DMA Addr 1 (write) */ +#define ED_P2_RNPP 0x03 /* Remote Next Packet Pointer */ +#define ED_P2_TPSR 0x04 /* Transmit Page Start (read) */ +#define ED_P2_LNPP 0x05 /* Local Next Packet Pointer */ +#define ED_P2_ACU 0x06 /* Address Counter Upper */ +#define ED_P2_ACL 0x07 /* Address Counter Lower */ +#define ED_P2_RCR 0x0c /* Receive Configuration Register (read) */ +#define ED_P2_TCR 0x0d /* Transmit Configuration Register (read) */ +#define ED_P2_DCR 0x0e /* Data Configuration Register (read) */ +#define ED_P2_IMR 0x0f /* Interrupt Mask Register (read) */ + +/* + * Command Register (CR) definitions + */ + +/* + * STP: SToP. Software reset command. Takes the controller offline. No + * packets will be received or transmitted. Any reception or + * transmission in progress will continue to completion before + * entering reset state. To exit this state, the STP bit must + * reset and the STA bit must be set. The software reset has + * executed only when indicated by the RST bit in the ISR being + * set. + */ +#define ED_CR_STP 0x01 + +/* + * STA: STArt. This bit is used to activate the NIC after either power-up, + * or when the NIC has been put in reset mode by software command + * or error. + */ +#define ED_CR_STA 0x02 + +/* + * TXP: Transmit Packet. This bit must be set to indicate transmission of + * a packet. TXP is internally reset either after the transmission is + * completed or aborted. This bit should be set only after the Transmit + * Byte Count and Transmit Page Start register have been programmed. + */ +#define ED_CR_TXP 0x04 + +/* + * RD0, RD1, RD2: Remote DMA Command. These three bits control the operation + * of the remote DMA channel. RD2 can be set to abort any remote DMA + * command in progress. The Remote Byte Count registers should be cleared + * when a remote DMA has been aborted. The Remote Start Addresses are not + * restored to the starting address if the remote DMA is aborted. + * + * RD2 RD1 RD0 function + * 0 0 0 not allowed + * 0 0 1 remote read + * 0 1 0 remote write + * 0 1 1 send packet + * 1 X X abort + */ +#define ED_CR_RD0 0x08 +#define ED_CR_RD1 0x10 +#define ED_CR_RD2 0x20 + +/* + * PS0, PS1: Page Select. The two bits select which register set or 'page' to + * access. + * + * PS1 PS0 page + * 0 0 0 + * 0 1 1 + * 1 0 2 + * 1 1 reserved + */ +#define ED_CR_PS0 0x40 +#define ED_CR_PS1 0x80 +/* bit encoded aliases */ +#define ED_CR_PAGE_0 0x00 /* (for consistency) */ +#define ED_CR_PAGE_1 0x40 +#define ED_CR_PAGE_2 0x80 + +/* + * Interrupt Status Register (ISR) definitions + */ + +/* + * PRX: Packet Received. Indicates packet received with no errors. + */ +#define ED_ISR_PRX 0x01 + +/* + * PTX: Packet Transmitted. Indicates packet transmitted with no errors. + */ +#define ED_ISR_PTX 0x02 + +/* + * RXE: Receive Error. Indicates that a packet was received with one or more + * the following errors: CRC error, frame alignment error, FIFO overrun, + * missed packet. + */ +#define ED_ISR_RXE 0x04 + +/* + * TXE: Transmission Error. Indicates that an attempt to transmit a packet + * resulted in one or more of the following errors: excessive + * collisions, FIFO underrun. + */ +#define ED_ISR_TXE 0x08 + +/* + * OVW: OverWrite. Indicates a receive ring-buffer overrun. Incoming network + * would exceed (has exceeded?) the boundry pointer, resulting in data + * that was previously received and not yet read from the buffer to be + * overwritten. + */ +#define ED_ISR_OVW 0x10 + +/* + * CNT: Counter Overflow. Set when the MSB of one or more of the Network Talley + * Counters has been set. + */ +#define ED_ISR_CNT 0x20 + +/* + * RDC: Remote Data Complete. Indicates that a Remote DMA operation has completed. + */ +#define ED_ISR_RDC 0x40 + +/* + * RST: Reset status. Set when the NIC enters the reset state and cleared when a + * Start Command is issued to the CR. This bit is also set when a receive + * ring-buffer overrun (OverWrite) occurs and is cleared when one or more + * packets have been removed from the ring. This is a read-only bit. + */ +#define ED_ISR_RST 0x80 + +/* + * Interrupt Mask Register (IMR) definitions + */ + +/* + * PRXE: Packet Received interrupt Enable. If set, a received packet will cause + * an interrupt. + */ +#define ED_IMR_PRXE 0x01 + +/* + * PTXE: Packet Transmit interrupt Enable. If set, an interrupt is generated when + * a packet transmission completes. + */ +#define ED_IMR_PTXE 0x02 + +/* + * RXEE: Receive Error interrupt Enable. If set, an interrupt will occur whenever a + * packet is received with an error. + */ +#define ED_IMR_RXEE 0x04 + +/* + * TXEE: Transmit Error interrupt Enable. If set, an interrupt will occur whenever + * a transmission results in an error. + */ +#define ED_IMR_TXEE 0x08 + +/* + * OVWE: OverWrite error interrupt Enable. If set, an interrupt is generated whenever + * the receive ring-buffer is overrun. i.e. when the boundry pointer is exceeded. + */ +#define ED_IMR_OVWE 0x10 + +/* + * CNTE: Counter overflow interrupt Enable. If set, an interrupt is generated whenever + * the MSB of one or more of the Network Statistics counters has been set. + */ +#define ED_IMR_CNTE 0x20 + +/* + * RDCE: Remote DMA Complete interrupt Enable. If set, an interrupt is generated + * when a remote DMA transfer has completed. + */ +#define ED_IMR_RDCE 0x40 + +/* + * bit 7 is unused/reserved + */ + +/* + * Data Configuration Register (DCR) definitions + */ + +/* + * WTS: Word Transfer Select. WTS establishes byte or word transfers for + * both remote and local DMA transfers + */ +#define ED_DCR_WTS 0x01 + +/* + * BOS: Byte Order Select. BOS sets the byte order for the host. + * Should be 0 for 80x86, and 1 for 68000 series processors + */ +#define ED_DCR_BOS 0x02 + +/* + * LAS: Long Address Select. When LAS is 1, the contents of the remote + * DMA registers RSAR0 and RSAR1 are used to provide A16-A31 + */ +#define ED_DCR_LAS 0x04 + +/* + * LS: Loopback Select. When 0, loopback mode is selected. Bits D1 and D2 + * of the TCR must also be programmed for loopback operation. + * When 1, normal operation is selected. + */ +#define ED_DCR_LS 0x08 + +/* + * AR: Auto-initialize Remote. When 0, data must be removed from ring-buffer + * under program control. When 1, remote DMA is automatically initiated + * and the boundry pointer is automatically updated + */ +#define ED_DCR_AR 0x10 + +/* + * FT0, FT1: Fifo Threshold select. + * FT1 FT0 Word-width Byte-width + * 0 0 1 word 2 bytes + * 0 1 2 words 4 bytes + * 1 0 4 words 8 bytes + * 1 1 8 words 12 bytes + * + * During transmission, the FIFO threshold indicates the number of bytes + * or words that the FIFO has filled from the local DMA before BREQ is + * asserted. The transmission threshold is 16 bytes minus the receiver + * threshold. + */ +#define ED_DCR_FT0 0x20 +#define ED_DCR_FT1 0x40 + +/* + * bit 7 (0x80) is unused/reserved + */ + +/* + * Transmit Configuration Register (TCR) definitions + */ + +/* + * CRC: Inhibit CRC. If 0, CRC will be appended by the transmitter, if 0, CRC + * is not appended by the transmitter. + */ +#define ED_TCR_CRC 0x01 + +/* + * LB0, LB1: Loopback control. These two bits set the type of loopback that is + * to be performed. + * + * LB1 LB0 mode + * 0 0 0 - normal operation (DCR_LS = 0) + * 0 1 1 - internal loopback (DCR_LS = 0) + * 1 0 2 - external loopback (DCR_LS = 1) + * 1 1 3 - external loopback (DCR_LS = 0) + */ +#define ED_TCR_LB0 0x02 +#define ED_TCR_LB1 0x04 + +/* + * ATD: Auto Transmit Disable. Clear for normal operation. When set, allows + * another station to disable the NIC's transmitter by transmitting to + * a multicast address hashing to bit 62. Reception of a multicast address + * hashing to bit 63 enables the transmitter. + */ +#define ED_TCR_ATD 0x08 + +/* + * OFST: Collision Offset enable. This bit when set modifies the backoff + * algorithm to allow prioritization of nodes. + */ +#define ED_TCR_OFST 0x10 + +/* + * bits 5, 6, and 7 are unused/reserved + */ + +/* + * Transmit Status Register (TSR) definitions + */ + +/* + * PTX: Packet Transmitted. Indicates successful transmission of packet. + */ +#define ED_TSR_PTX 0x01 + +/* + * bit 1 (0x02) is unused/reserved + */ + +/* + * COL: Transmit Collided. Indicates that the transmission collided at least + * once with another station on the network. + */ +#define ED_TSR_COL 0x04 + +/* + * ABT: Transmit aborted. Indicates that the transmission was aborted due to + * excessive collisions. + */ +#define ED_TSR_ABT 0x08 + +/* + * CRS: Carrier Sense Lost. Indicates that carrier was lost during the + * transmission of the packet. (Transmission is not aborted because + * of a loss of carrier) + */ +#define ED_TSR_CRS 0x10 + +/* + * FU: FIFO Underrun. Indicates that the NIC wasn't able to access bus/ + * transmission memory before the FIFO emptied. Transmission of the + * packet was aborted. + */ +#define ED_TSR_FU 0x20 + +/* + * CDH: CD Heartbeat. Indicates that the collision detection circuitry + * isn't working correctly during a collision heartbeat test. + */ +#define ED_TSR_CDH 0x40 + +/* + * OWC: Out of Window Collision: Indicates that a collision occurred after + * a slot time (51.2us). The transmission is rescheduled just as in + * normal collisions. + */ +#define ED_TSR_OWC 0x80 + +/* + * Receiver Configuration Register (RCR) definitions + */ + +/* + * SEP: Save Errored Packets. If 0, error packets are discarded. If set to 1, + * packets with CRC and frame errors are not discarded. + */ +#define ED_RCR_SEP 0x01 + +/* + * AR: Accept Runt packet. If 0, packet with less than 64 byte are discarded. + * If set to 1, packets with less than 64 byte are not discarded. + */ +#define ED_RCR_AR 0x02 + +/* + * AB: Accept Broadcast. If set, packets sent to the broadcast address will be + * accepted. + */ +#define ED_RCR_AB 0x04 + +/* + * AM: Accept Multicast. If set, packets sent to a multicast address are checked + * for a match in the hashing array. If clear, multicast packets are ignored. + */ +#define ED_RCR_AM 0x08 + +/* + * PRO: Promiscuous Physical. If set, all packets with a physical addresses are + * accepted. If clear, a physical destination address must match this + * station's address. Note: for full promiscuous mode, RCR_AB and RCR_AM + * must also be set. In addition, the multicast hashing array must be set + * to all 1's so that all multicast addresses are accepted. + */ +#define ED_RCR_PRO 0x10 + +/* + * MON: Monitor Mode. If set, packets will be checked for good CRC and framing, + * but are not stored in the ring-buffer. If clear, packets are stored (normal + * operation). + */ +#define ED_RCR_MON 0x20 + +/* + * bits 6 and 7 are unused/reserved. + */ + +/* + * Receiver Status Register (RSR) definitions + */ + +/* + * PRX: Packet Received without error. + */ +#define ED_RSR_PRX 0x01 + +/* + * CRC: CRC error. Indicates that a packet has a CRC error. Also set for frame + * alignment errors. + */ +#define ED_RSR_CRC 0x02 + +/* + * FAE: Frame Alignment Error. Indicates that the incoming packet did not end on + * a byte boundry and the CRC did not match at the last byte boundry. + */ +#define ED_RSR_FAE 0x04 + +/* + * FO: FIFO Overrun. Indicates that the FIFO was not serviced (during local DMA) + * causing it to overrun. Reception of the packet is aborted. + */ +#define ED_RSR_FO 0x08 + +/* + * MPA: Missed Packet. Indicates that the received packet couldn't be stored in + * the ring-buffer because of insufficient buffer space (exceeding the + * boundry pointer), or because the transfer to the ring-buffer was inhibited + * by RCR_MON - monitor mode. + */ +#define ED_RSR_MPA 0x10 + +/* + * PHY: Physical address. If 0, the packet received was sent to a physical address. + * If 1, the packet was accepted because of a multicast/broadcast address + * match. + */ +#define ED_RSR_PHY 0x20 + +/* + * DIS: Receiver Disabled. Set to indicate that the receiver has enetered monitor + * mode. Cleared when the receiver exits monitor mode. + */ +#define ED_RSR_DIS 0x40 + +/* + * DFR: Deferring. Set to indicate a 'jabber' condition. The CRS and COL inputs + * are active, and the transceiver has set the CD line as a result of the + * jabber. + */ +#define ED_RSR_DFR 0x80 + +/* + * receive ring discriptor + * + * The National Semiconductor DS8390 Network interface controller uses + * the following receive ring headers. The way this works is that the + * memory on the interface card is chopped up into 256 bytes blocks. + * A contiguous portion of those blocks are marked for receive packets + * by setting start and end block #'s in the NIC. For each packet that + * is put into the receive ring, one of these headers (4 bytes each) is + * tacked onto the front. + */ +struct ed_ring { + struct edr_status { /* received packet status */ + u_char rs_prx:1, /* packet received intack */ + rs_crc:1, /* crc error */ + rs_fae:1, /* frame alignment error */ + rs_fo:1, /* fifo overrun */ + rs_mpa:1, /* packet received intack */ + rs_phy:1, /* packet received intack */ + rs_dis:1, /* packet received intack */ + rs_dfr:1; /* packet received intack */ + } ed_rcv_status; /* received packet status */ + u_char next_packet; /* pointer to next packet */ + u_short count; /* bytes in packet (length + 4) */ +}; + +/* + * Common constants + */ +#define ED_PAGE_SIZE 256 /* Size of RAM pages in bytes */ +#define ED_TXBUF_SIZE 6 /* Size of TX buffer in pages */ + +/* + * Vendor types + */ +#define ED_VENDOR_WD_SMC 0x00 /* Western Digital/SMC */ +#define ED_VENDOR_3COM 0x01 /* 3Com */ + +/* + * Definitions for Western digital/SMC WD80x3 series ASIC + */ +/* + * Memory Select Register (MSR) + */ +#define ED_WD_MSR 0 + +#define ED_WD_MSR_ADDR 0x3f /* Memory decode bits 18-13 */ +#define ED_WD_MSR_MENB 0x40 /* Memory enable */ +#define ED_WD_MSR_RST 0x80 /* Reset board */ + +/* + * Interface Configuration Register (ICR) + */ +#define ED_WD_ICR 1 + +#define ED_WD_ICR_16BIT 0x01 /* 16-bit interface */ +#define ED_WD_ICR_OAR 0x02 /* select register. 0=BIO 1=EAR */ +#define ED_WD_ICR_IR2 0x04 /* select second set of IRQs */ +#define ED_WD_ICR_MSZ 0x08 /* memory size (0=8k 1=32k) */ +#define ED_WD_ICR_RLA 0x10 /* recall LAN address */ +#define ED_WD_ICR_RX7 0x20 /* recall all but i/o and LAN address */ +#define ED_WD_ICR_RIO 0x40 /* recall i/o address */ +#define ED_WD_ICR_STO 0x80 /* store to non-volatile memory */ + +/* + * Interrupt Request Register (IRR) + */ +#define ED_WD_IRR 4 + +#define ED_WD_IRR_0WS 0x01 /* use 0 wait-states on 8 bit bus */ +#define ED_WD_IRR_OUT1 0x02 /* WD83C584 pin 1 output */ +#define ED_WD_IRR_OUT2 0x04 /* WD83C584 pin 2 output */ +#define ED_WD_IRR_OUT3 0x08 /* WD83C584 pin 3 output */ +#define ED_WD_IRR_FLASH 0x10 /* Flash RAM is in the ROM socket */ +#define ED_WD_IRR_IEN 0x80 /* Interrupt enable */ + +/* + * LA Address Register (LAAR) + */ +#define ED_WD_LAAR 5 + +#define ED_WD_LAAR_ADDRHI 0x1f /* bits 23-19 of RAM address */ +#define ED_WD_LAAR_0WS16 0x20 /* enable 0 wait-states on 16 bit bus */ +#define ED_WD_LAAR_L16EN 0x40 /* enable 16-bit operation */ +#define ED_WD_LAAR_M16EN 0x80 /* enable 16-bit memory access */ + +/* i/o base offset to station address/card-ID PROM */ +#define ED_WD_PROM 8 + +/* i/o base offset to CARD ID */ +#define ED_WD_CARD_ID ED_WD_PROM+6 + +#define ED_TYPE_WD8003S 0x02 +#define ED_TYPE_WD8003E 0x03 +#define ED_TYPE_WD8013EBT 0x05 +#define ED_TYPE_WD8013EB 0x27 +#define ED_TYPE_WD8013EBP 0x2c +#define ED_TYPE_WD8013EPC 0x29 + +/* Bit definitions in card ID */ +#define ED_WD_REV_MASK 0x1f /* Revision mask */ +#define ED_WD_SOFTCONFIG 0x20 /* Soft config */ +#define ED_WD_LARGERAM 0x40 /* Large RAM */ +#define ED_MICROCHANEL 0x80 /* Microchannel bus (vs. isa) */ + +/* + * Checksum total. All 8 bytes in station address PROM will add up to this + */ +#define ED_WD_ROM_CHECKSUM_TOTAL 0xFF + +#define ED_WD_NIC_OFFSET 0x10 /* I/O base offset to NIC */ +#define ED_WD_ASIC_OFFSET 0 /* I/O base offset to ASIC */ +#define ED_WD_IO_PORTS 32 /* # of i/o addresses used */ + +#define ED_WD_PAGE_OFFSET 0 /* page offset for NIC access to mem */ + +/* + * Definitions for 3Com 3c503 + */ +#define ED_3COM_NIC_OFFSET 0 +#define ED_3COM_ASIC_OFFSET 0x400 /* offset to nic i/o regs */ + +/* + * XXX - The I/O address range is fragmented in the 3c503; this is the + * number of regs at iobase. + */ +#define ED_3COM_IO_PORTS 16 /* # of i/o addresses used */ + +#define ED_3COM_PAGE_OFFSET 0x20 /* memory starts in second bank */ + +/* + * Page Start Register. Must match PSTART in NIC + */ +#define ED_3COM_PSTR 0 + +/* + * Page Stop Register. Must match PSTOP in NIC + */ +#define ED_3COM_PSPR 1 + +/* + * Drq Timer Register. Determines number of bytes to be transfered during + * a DMA burst. + */ +#define ED_3COM_DQTR 2 + +/* + * Base Configuration Register. Read-only register which contains the + * board-configured I/O base address of the adapter. Bit encoded. + */ +#define ED_3COM_BCFR 3 + +#define ED_3COM_BCFR_2E0 0x01 +#define ED_3COM_BCFR_2A0 0x02 +#define ED_3COM_BCFR_280 0x04 +#define ED_3COM_BCFR_250 0x08 +#define ED_3COM_BCFR_350 0x10 +#define ED_3COM_BCFR_330 0x20 +#define ED_3COM_BCFR_310 0x40 +#define ED_3COM_BCFR_300 0x80 + +/* + * EPROM Configuration Register. Read-only register which contains the + * board-configured memory base address. Bit encoded. + */ +#define ED_3COM_PCFR 4 + +#define ED_3COM_PCFR_C8000 0x10 +#define ED_3COM_PCFR_CC000 0x20 +#define ED_3COM_PCFR_D8000 0x40 +#define ED_3COM_PCFR_DC000 0x80 + +/* + * GA Configuration Register. Gate-Array Configuration Register. + */ +#define ED_3COM_GACFR 5 + +/* + * mbs2 mbs1 mbs0 start address + * 0 0 0 0x0000 + * 0 0 1 0x2000 + * 0 1 0 0x4000 + * 0 1 1 0x6000 + * + * Note that with adapters with only 8K, the setting for 0x2000 must + * always be used. + */ +#define ED_3COM_GACFR_MBS0 0x01 +#define ED_3COM_GACFR_MBS1 0x02 +#define ED_3COM_GACFR_MBS2 0x04 + +#define ED_3COM_GACFR_RSEL 0x08 /* enable shared memory */ +#define ED_3COM_GACFR_TEST 0x10 /* for GA testing */ +#define ED_3COM_GACFR_OWS 0x20 /* select 0WS access to GA */ +#define ED_3COM_GACFR_TCM 0x40 /* Mask DMA interrupts */ +#define ED_3COM_GACFR_NIM 0x80 /* Mask NIC interrupts */ + +/* + * Control Register. Miscellaneous control functions. + */ +#define ED_3COM_CR 6 + +#define ED_3COM_CR_RST 0x01 /* Reset GA and NIC */ +#define ED_3COM_CR_XSEL 0x02 /* Transceiver select. BNC=1(def) AUI=0 */ +#define ED_3COM_CR_EALO 0x04 /* window EA PROM 0-15 to I/O base */ +#define ED_3COM_CR_EAHI 0x08 /* window EA PROM 16-31 to I/O base */ +#define ED_3COM_CR_SHARE 0x10 /* select interrupt sharing option */ +#define ED_3COM_CR_DBSEL 0x20 /* Double buffer select */ +#define ED_3COM_CR_DDIR 0x40 /* DMA direction select */ +#define ED_3COM_CR_START 0x80 /* Start DMA controller */ + +/* + * Status Register. Miscellaneous status information. + */ +#define ED_3COM_STREG 7 + +#define ED_3COM_STREG_REV 0x07 /* GA revision */ +#define ED_3COM_STREG_DIP 0x08 /* DMA in progress */ +#define ED_3COM_STREG_DTC 0x10 /* DMA terminal count */ +#define ED_3COM_STREG_OFLW 0x20 /* Overflow */ +#define ED_3COM_STREG_UFLW 0x40 /* Underflow */ +#define ED_3COM_STREG_DPRDY 0x80 /* Data port ready */ + +/* + * Interrupt/DMA Configuration Register + */ +#define ED_3COM_IDCFR 8 + +#define ED_3COM_IDCFR_DRQ0 0x01 /* DMA request 1 select */ +#define ED_3COM_IDCFR_DRQ1 0x02 /* DMA request 2 select */ +#define ED_3COM_IDCFR_DRQ2 0x04 /* DMA request 3 select */ +#define ED_3COM_IDCFR_UNUSED 0x08 /* not used */ +#define ED_3COM_IDCFR_IRQ2 0x10 /* Interrupt request 2 select */ +#define ED_3COM_IDCFR_IRQ3 0x20 /* Interrupt request 3 select */ +#define ED_3COM_IDCFR_IRQ4 0x40 /* Interrupt request 4 select */ +#define ED_3COM_IDCFR_IRQ5 0x80 /* Interrupt request 5 select */ + +/* + * DMA Address Register MSB + */ +#define ED_3COM_DAMSB 9 + +/* + * DMA Address Register LSB + */ +#define ED_3COM_DALSB 0x0a + +/* + * Vector Pointer Register 2 + */ +#define ED_3COM_VPTR2 0x0b + +/* + * Vector Pointer Register 1 + */ +#define ED_3COM_VPTR1 0x0c + +/* + * Vector Pointer Register 0 + */ +#define ED_3COM_VPTR0 0x0d + +/* + * Register File Access MSB + */ +#define ED_3COM_RFMSB 0x0e + +/* + * Register File Access LSB + */ +#define ED_3COM_RFLSB 0x0f diff --git a/sys/i386/isa/if_ed.c b/sys/i386/isa/if_ed.c new file mode 100644 index 0000000..1e585db --- /dev/null +++ b/sys/i386/isa/if_ed.c @@ -0,0 +1,1660 @@ +/* + * Device driver for National Semiconductor DS8390 based ethernet + * adapters. By David Greenman, 29-April-1993 + * + * Copyright (C) 1993, David Greenman. This software may be used, modified, + * copied, distributed, and sold, in both source and binary form provided + * that the above copyright and these terms are retained. Under no + * circumstances is the author responsible for the proper functioning + * of this software, nor does the author assume any responsibility + * for damages incurred with its use. + * + * Currently supports the Western Digital/SMC 8003 and 8013 series + * and the 3Com 3c503 + */ + +/* + * Modification history + * + * $Log$ + * + */ + +#include "ed.h" +#if NED > 0 +#include "bpfilter.h" + +#include "param.h" +#include "errno.h" +#include "ioctl.h" +#include "mbuf.h" +#include "socket.h" +#include "syslog.h" + +#include "net/if.h" +#include "net/if_dl.h" +#include "net/if_types.h" +#include "net/netisr.h" + +#ifdef INET +#include "netinet/in.h" +#include "netinet/in_systm.h" +#include "netinet/in_var.h" +#include "netinet/ip.h" +#include "netinet/if_ether.h" +#endif + +#ifdef NS +#include "netns/ns.h" +#include "netns/ns_if.h" +#endif + +#if NBPFILTER > 0 +#include "net/bpf.h" +#include "net/bpfdesc.h" +#endif + +#include "i386/isa/isa.h" +#include "i386/isa/isa_device.h" +#include "i386/isa/icu.h" +#include "i386/isa/if_edreg.h" + +#include "i386/include/pio.h" + + +/* + * ed_softc: per line info and status + */ +struct ed_softc { + struct arpcom arpcom; /* ethernet common */ + + char *type_str; /* pointer to type string */ + u_char vendor; /* interface vendor */ + u_char type; /* interface type code */ + + u_short vector; /* interrupt vector */ + u_short asic_addr; /* ASIC I/O bus address */ + u_short nic_addr; /* NIC (DS8390) I/O bus address */ + + caddr_t smem_start; /* shared memory start address */ + caddr_t smem_end; /* shared memory end address */ + u_long smem_size; /* total shared memory size */ + caddr_t smem_ring; /* start of RX ring-buffer (in smem) */ + + caddr_t bpf; /* BPF "magic cookie" */ + + u_char memwidth; /* width of access to card mem 8 or 16 */ + u_char xmit_busy; /* transmitter is busy */ + u_char txb_cnt; /* Number of transmit buffers */ + u_char txb_next; /* Pointer to next buffer ready to xmit */ + u_short txb_next_len; /* next xmit buffer length */ + u_char data_buffered; /* data has been buffered in interface memory */ + u_char tx_page_start; /* first page of TX buffer area */ + + u_char rec_page_start; /* first page of RX ring-buffer */ + u_char rec_page_stop; /* last page of RX ring-buffer */ + u_char next_packet; /* pointer to next unread RX packet */ +} ed_softc[NED]; + +int ed_attach(), ed_init(), edintr(), ed_ioctl(), ed_probe(), + ed_start(), ed_reset(), ed_watchdog(); + +static void ed_stop(); + +static inline void ed_rint(); +static inline void ed_xmit(); +static inline char *ed_ring_copy(); + +extern int ether_output(); + +struct isa_driver eddriver = { + ed_probe, + ed_attach, + "ed" +}; +/* + * Interrupt conversion table for WD/SMC ASIC + * (IRQ* are defined in icu.h) + */ +static unsigned short ed_intr_mask[] = { + IRQ9, + IRQ3, + IRQ5, + IRQ7, + IRQ10, + IRQ11, + IRQ15, + IRQ4 +}; + +#define ETHER_MIN_LEN 64 +#define ETHER_MAX_LEN 1518 +#define ETHER_ADDR_LEN 6 +#define ETHER_HDR_SIZE 14 + +/* + * Determine if the device is present + * + * on entry: + * a pointer to an isa_device struct + * on exit: + * NULL if device not found + * or # of i/o addresses used (if found) + */ +int +ed_probe(isa_dev) + struct isa_device *isa_dev; +{ + struct ed_softc *sc = &ed_softc[isa_dev->id_unit]; + int i, x; + u_int memsize; + u_char iptr, memwidth, sum, tmp; + + /* + * Setup initial i/o address for ASIC and NIC + */ + sc->asic_addr = isa_dev->id_iobase; + sc->vector = isa_dev->id_irq; + sc->smem_start = (caddr_t)isa_dev->id_maddr; + + /* + * Attempt to do a checksum over the station address PROM. + * This is mapped differently on the WD80x3 and 3C503, so if + * it fails, it might be a 3C503. There is a problem with + * this, though: some clone WD boards don't pass the + * checksum test. Danpex boards for one. We need to do + * additional checking for this case. + */ + for (sum = 0, i = 0; i < 8; ++i) { + sum += inb(sc->asic_addr + ED_WD_PROM + i); + } + + if (sum == ED_WD_ROM_CHECKSUM_TOTAL) { + goto type_WD80x3; + } else { + /* + * Do additional checking to make sure its a 3Com and + * not a broken WD clone + */ + goto type_3Com; + } + +type_WD80x3: + /* + * Looks like a WD/SMC board + */ + + sc->vendor = ED_VENDOR_WD_SMC; + sc->type = inb(sc->asic_addr + ED_WD_CARD_ID); + + sc->nic_addr = sc->asic_addr + ED_WD_NIC_OFFSET; + + /* reset card to force it into a known state. */ + outb(sc->asic_addr + ED_WD_MSR, ED_WD_MSR_RST); + DELAY(100); + outb(sc->asic_addr + ED_WD_MSR, inb(sc->asic_addr + ED_WD_MSR) & ~ED_WD_MSR_RST); + /* wait in the case this card is reading it's EEROM */ + DELAY(5000); + + /* + * Set initial values for width/size. + */ + switch (sc->type) { + case ED_TYPE_WD8003S: + sc->type_str = "WD8003S"; + memsize = 8192; + memwidth = 8; + break; + case ED_TYPE_WD8003E: + sc->type_str = "WD8003E"; + memsize = 8192; + memwidth = 8; + break; + case ED_TYPE_WD8013EBT: + sc->type_str = "WD8013EBT"; + memsize = 16384; + memwidth = 16; + break; + case ED_TYPE_WD8013EB: /* also WD8003EP */ + if (inb(sc->asic_addr + ED_WD_ICR) + & ED_WD_ICR_16BIT) { + memwidth = 16; + memsize = 16384; + sc->type_str = "WD8013EB"; + } else { + sc->type_str = "WD8003EP"; + memsize = 8192; + memwidth = 8; + } + break; + case ED_TYPE_WD8013EBP: + sc->type_str = "WD8013EBP"; + memsize = 16384; + memwidth = 16; + break; + case ED_TYPE_WD8013EPC: + sc->type_str = "WD8013EPC"; + memsize = 16384; + memwidth = 16; + break; + default: + sc->type_str = "unknown"; + memsize = 8192; + memwidth = 8; + break; + } + /* + * Make some adjustments to initial values depending on what is + * found in the ICR. + */ + if ((memwidth==16) + && ((inb(sc->asic_addr + ED_WD_ICR) & ED_WD_ICR_16BIT) == 0)) { + memwidth = 8; + memsize = 8192; + } + if (inb(sc->asic_addr + ED_WD_ICR) & ED_WD_ICR_MSZ) { + memsize = 32768; + } + +#if ED_DEBUG + printf("type=%s width=%d memsize=%d\n",sc->type_str,memwidth,memsize); + for (i=0; i<8; i++) + printf("%x -> %x\n", i, inb(sc->asic_addr + i)); +#endif + + if (sc->type & ED_WD_SOFTCONFIG) { + iptr = inb(isa_dev->id_iobase + 1) & 4 | + ((inb(isa_dev->id_iobase+4) & 0x60) >> 5); + if (ed_intr_mask[iptr] != isa_dev->id_irq) { + printf("ed%d: kernel configured irq doesn't match board configured irq\n", + isa_dev->id_unit); + return(0); + } + outb(isa_dev->id_iobase+4, inb(isa_dev->id_iobase+4) | 0x80); + } + + sc->memwidth = memwidth; + /* + * allocate one xmit buffer if < 16k, two buffers otherwise + */ + if (memsize < 16384) { + sc->smem_ring = sc->smem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE); + sc->txb_cnt = 1; + sc->rec_page_start = ED_TXBUF_SIZE; + } else { + sc->smem_ring = sc->smem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE * 2); + sc->txb_cnt = 2; + sc->rec_page_start = ED_TXBUF_SIZE * 2; + } + sc->smem_size = memsize; + sc->smem_end = sc->smem_start + memsize; + sc->rec_page_stop = memsize / ED_PAGE_SIZE; + sc->tx_page_start = ED_WD_PAGE_OFFSET; + + /* + * Get station address from on-board ROM + */ + for (i = 0; i < ETHER_ADDR_LEN; ++i) + sc->arpcom.ac_enaddr[i] = inb(sc->asic_addr + ED_WD_PROM + i); + + /* + * Set address and enable interface shared memory. + */ + outb(sc->asic_addr + ED_WD_MSR, ((kvtop(sc->smem_start) >> 13) & + ED_WD_MSR_ADDR) | ED_WD_MSR_MENB); + + /* + * Set upper address bits and 8/16 bit access to shared memory + */ + if (sc->type & ED_WD_SOFTCONFIG) { + if (memwidth == 8) { + outb(sc->asic_addr + ED_WD_LAAR, + ((kvtop(sc->smem_start) >> 19) & ED_WD_LAAR_ADDRHI)); + } else { + outb(sc->asic_addr + ED_WD_LAAR, + ED_WD_LAAR_L16EN | ED_WD_LAAR_M16EN | + ((kvtop(sc->smem_start) >> 19) & ED_WD_LAAR_ADDRHI)); + } + } + + /* + * Now zero memory and verify that it is clear + */ + bzero(sc->smem_start, memsize); + + for (i = 0; i < memsize; ++i) + if (sc->smem_start[i]) { + printf("ed%d: failed to clear shared memory at %x - check configuration\n", + isa_dev->id_unit, sc->smem_start + i); + + /* + * Disable 16 bit access to shared memory + */ + if (memwidth == 16) + outb(sc->asic_addr + ED_WD_LAAR, + inb(sc->asic_addr + ED_WD_LAAR) + & ~ED_WD_LAAR_M16EN); + + return(0); + } + + /* + * Disable 16bit access to shared memory - we leave it disabled so + * that 1) machines reboot properly when the board is set + * 16 bit mode and there are conflicting 8bit devices/ROMS + * in the same 128k address space as this boards shared + * memory. and 2) so that other 8 bit devices with shared + * memory can be used in this 128k region, too. + */ + if (memwidth == 16) + outb(sc->asic_addr + ED_WD_LAAR, inb(sc->asic_addr + ED_WD_LAAR) + & ~ED_WD_LAAR_M16EN); + + isa_dev->id_msize = memsize; + return (ED_WD_IO_PORTS); + +type_3Com: + /* + * Looks like a 3Com board + */ + + sc->vendor = ED_VENDOR_3COM; + sc->asic_addr = isa_dev->id_iobase + ED_3COM_ASIC_OFFSET; + sc->nic_addr = isa_dev->id_iobase + ED_3COM_NIC_OFFSET; + + sc->type_str = "3c503"; + + memsize = 8192; + + /* + * Verify that the kernel configured I/O address matches the board + * configured address + */ + switch (sc->asic_addr + ED_3COM_BCFR) { + case ED_3COM_BCFR_300: + if (isa_dev->id_iobase != 0x300) + return(0); + break; + case ED_3COM_BCFR_310: + if (isa_dev->id_iobase != 0x310) + return(0); + break; + case ED_3COM_BCFR_330: + if (isa_dev->id_iobase != 0x330) + return(0); + break; + case ED_3COM_BCFR_350: + if (isa_dev->id_iobase != 0x350) + return(0); + break; + case ED_3COM_BCFR_250: + if (isa_dev->id_iobase != 0x250) + return(0); + break; + case ED_3COM_BCFR_280: + if (isa_dev->id_iobase != 0x280) + return(0); + break; + case ED_3COM_BCFR_2A0: + if (isa_dev->id_iobase != 0x2a0) + return(0); + break; + case ED_3COM_BCFR_2E0: + if (isa_dev->id_iobase != 0x2e0) + return(0); + break; + } + + /* + * Verify that the kernel shared memory address matches the + * board configured address. + */ + switch (sc->asic_addr + ED_3COM_PCFR) { + case ED_3COM_PCFR_DC000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_DC000) + return(0); + break; + case ED_3COM_PCFR_D8000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_D8000) + return(0); + break; + case ED_3COM_PCFR_CC000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_CC000) + return(0); + break; + case ED_3COM_PCFR_C8000: + if (kvtop(isa_dev->id_maddr) != ED_3COM_PCFR_C8000) + return(0); + break; + } + + /* + * Reset NIC and ASIC + */ + outb(sc->asic_addr + ED_3COM_CR, ED_3COM_CR_RST); + /* + * Verify that reset bit was set + */ + if ((inb(sc->asic_addr + ED_3COM_CR) & ED_3COM_CR_RST) == 0) + return (0); + /* + * Wait for a while, then un-reset it + */ + DELAY(5000); + outb(sc->asic_addr + ED_3COM_CR, 0); + + /* + * Verify that the bit cleared + */ + if (inb(sc->asic_addr + ED_3COM_CR) & ED_3COM_CR_RST) + return (0); + + /* + * Wait a bit for the NIC to recover from the reset + */ + DELAY(5000); + + /* + * Determine if this is an 8bit or 16bit board + */ + /* XXX - either this code is broken...or the hardware is... */ + /* it always comes up 8bit */ + /* + * select page 0 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + /* + * Attempt to clear WTS bit. If it doesn't clear, then this is a + * 16bit board. + */ + outb(sc->nic_addr + ED_P0_DCR, 0); + /* + * select page 2 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_2|ED_CR_RD2|ED_CR_STP); + /* + * The 3c503 forces the WTS bit to a one if this is a 16bit board + */ + if (inb(sc->nic_addr + ED_P2_DCR) & ED_DCR_WTS) + memwidth = 16; + else + memwidth = 8; + +#if 0 +printf(" (%dbit)",memwidth); +#endif + /* + * select page 0 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + + sc->txb_cnt = 1; + + sc->tx_page_start = ED_3COM_PAGE_OFFSET; + sc->rec_page_start = ED_TXBUF_SIZE + ED_3COM_PAGE_OFFSET; + sc->rec_page_stop = memsize / ED_PAGE_SIZE + ED_3COM_PAGE_OFFSET; + + sc->smem_size = memsize; + sc->smem_end = sc->smem_start + memsize; + sc->smem_ring = sc->smem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE); + + sc->memwidth = memwidth; + + /* + * Initialize GA page start/stop registers. Probably only needed + * if doing DMA, but what the hell. + */ + outb(sc->asic_addr + ED_3COM_PSTR, sc->rec_page_start); + outb(sc->asic_addr + ED_3COM_PSPR, sc->rec_page_stop); + + /* + * Set IRQ. 3c503 only allows a choice of irq 2-5. + */ + switch (isa_dev->id_irq) { + case IRQ2: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ2); + break; + case IRQ3: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ3); + break; + case IRQ4: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ4); + break; + case IRQ5: + outb(sc->asic_addr + ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ5); + break; + default: + printf("ed0: Invalid irq configuration\n"); + return(0); + } + + /* + * Initialize GA configuration register. Set bank and enable smem. + */ + outb(sc->asic_addr + ED_3COM_GACFR, ED_3COM_GACFR_RSEL | + ED_3COM_GACFR_MBS0); + + /* + * Initialize "Vector Pointer" registers. These gawd-awful things + * are compared to 20 bits of the address on ISA, and if they + * match, the shared memory is disabled. We set them to + * 0xffff0...allegedly the reset vector. + */ + outb(sc->asic_addr + ED_3COM_VPTR2, 0xff); + outb(sc->asic_addr + ED_3COM_VPTR1, 0xff); + outb(sc->asic_addr + ED_3COM_VPTR0, 0x00); + + /* + * Get station address from on-board ROM + */ + /* + * First, map ethernet address PROM over the top of where the NIC + * registers normally appear. + */ + outb(sc->asic_addr + ED_3COM_CR, ED_3COM_CR_EALO); + + for (i = 0; i < ETHER_ADDR_LEN; ++i) + sc->arpcom.ac_enaddr[i] = inb(sc->nic_addr + i); + + /* + * Unmap PROM - select NIC registers + */ + outb(sc->asic_addr + ED_3COM_CR, 0); + + /* + * Zero memory and verify that it is clear + */ +#if 0 +{ char test_buf[1024]; +printf("starting write\n"); + for (i = 0; i < 8*8192; ++i) + bcopy(test_buf, sc->smem_start, 1024); +printf("starting read\n"); + for (i = 0; i < 8*8192; ++i) + bcopy(sc->smem_start, test_buf, 1024); +printf("done.\n"); +} +#endif + + bzero(sc->smem_start, memsize); + + for (i = 0; i < memsize; ++i) + if (sc->smem_start[i]) { + printf("ed%d: failed to clear shared memory at %x - check configuration\n", + isa_dev->id_unit, sc->smem_start + i); + return(0); + } + + isa_dev->id_msize = memsize; + return(ED_3COM_IO_PORTS); +} + +/* + * Install interface into kernel networking data structures + */ +int +ed_attach(isa_dev) + struct isa_device *isa_dev; +{ + struct ed_softc *sc = &ed_softc[isa_dev->id_unit]; + struct ifnet *ifp = &sc->arpcom.ac_if; + struct ifaddr *ifa; + struct sockaddr_dl *sdl; + + /* + * Set interface to stopped condition (reset) + */ + ed_stop(isa_dev->id_unit); + + /* + * Initialize ifnet structure + */ + ifp->if_unit = isa_dev->id_unit; + ifp->if_name = "ed" ; + ifp->if_mtu = ETHERMTU; + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS ; + ifp->if_init = ed_init; + ifp->if_output = ether_output; + ifp->if_start = ed_start; + ifp->if_ioctl = ed_ioctl; + ifp->if_reset = ed_reset; + ifp->if_watchdog = ed_watchdog; + + if_attach(ifp); + +#if NBPFILTER > 0 + bpfattach(&sc->bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); +#endif + + /* + * Search down the ifa address list looking for the AF_LINK type entry + */ + ifa = ifp->if_addrlist; + while ((ifa != 0) && (ifa->ifa_addr != 0) && + (ifa->ifa_addr->sa_family != AF_LINK)) + ifa = ifa->ifa_next; + + /* + * If we find an AF_LINK type entry, we well fill in the hardware addr + */ + if ((ifa != 0) && (ifa->ifa_addr != 0)) { + /* + * Fill in the link level address for this interface + */ + sdl = (struct sockaddr_dl *)ifa->ifa_addr; + sdl->sdl_type = IFT_ETHER; + sdl->sdl_alen = ETHER_ADDR_LEN; + sdl->sdl_slen = 0; + bcopy(sc->arpcom.ac_enaddr, LLADDR(sdl), ETHER_ADDR_LEN); + } + + /* + * Print additional info when attached + */ + printf(" enet %s type %s", ether_sprintf(sc->arpcom.ac_enaddr), + sc->type_str); +} + +/* + * Reset interface. + */ +int +ed_reset(unit, uban) + int unit; +{ + int s; + + s = splnet(); + + /* + * Stop interface and re-initialize. + */ + ed_stop(unit); + ed_init(unit); + + s = splx(s); +} + +/* + * Take interface offline. + */ +void +ed_stop(unit) + int unit; +{ + struct ed_softc *sc = &ed_softc[unit]; + int n = 5000; + + /* + * Stop everything on the interface, and select page 0 registers. + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + + /* + * Wait for interface to enter stopped state, but limit # of checks + * to 'n' (about 5ms). It shouldn't even take 5us on modern + * DS8390's, but just in case it's an old one. + */ + while ((inb(sc->nic_addr + ED_P0_ISR) & ED_ISR_RST) == 0) { + if (--n == 0) + break; + } +} + +int +ed_watchdog(unit) + int unit; +{ + log(LOG_ERR, "ed%d: device timeout\n", unit); + + ed_reset(unit); +} + +/* + * Initialize device. + */ +ed_init(unit) + int unit; +{ + struct ed_softc *sc = &ed_softc[unit]; + struct ifnet *ifp = &sc->arpcom.ac_if; + int i, s; + u_char command; + + + /* address not known */ + if (ifp->if_addrlist == (struct ifaddr *)0) return; + + /* + * Initialize the NIC in the exact order outlined in the NS manual. + * This init procedure is "mandatory"...don't change what or when + * things happen. + */ + s = splnet(); + + /* reset transmitter flags */ + sc->data_buffered = 0; + sc->xmit_busy = 0; + sc->arpcom.ac_if.if_timer = 0; + + sc->txb_next = 0; + + /* This variable is used below - don't move this assignment */ + sc->next_packet = sc->rec_page_start + 1; + + /* + * Set interface for page 0, Remote DMA complete, Stopped + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STP); + + if (sc->memwidth == 16) { + /* + * Set FIFO threshold to 8, No auto-init Remote DMA, + * byte order=80x86, word-wide DMA xfers + */ + outb(sc->nic_addr + ED_P0_DCR, ED_DCR_FT1|ED_DCR_WTS); + } else { + /* + * Same as above, but byte-wide DMA xfers + */ + outb(sc->nic_addr + ED_P0_DCR, ED_DCR_FT1); + } + + /* + * Clear Remote Byte Count Registers + */ + outb(sc->nic_addr + ED_P0_RBCR0, 0); + outb(sc->nic_addr + ED_P0_RBCR1, 0); + + /* + * Enable reception of broadcast packets + */ + outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB); + + /* + * Place NIC in internal loopback mode + */ + outb(sc->nic_addr + ED_P0_TCR, ED_TCR_LB0); + + /* + * Initialize transmit/receive (ring-buffer) Page Start + */ + outb(sc->nic_addr + ED_P0_TPSR, sc->tx_page_start); + outb(sc->nic_addr + ED_P0_PSTART, sc->rec_page_start); + + /* + * Initialize Receiver (ring-buffer) Page Stop and Boundry + */ + outb(sc->nic_addr + ED_P0_PSTOP, sc->rec_page_stop); + outb(sc->nic_addr + ED_P0_BNRY, sc->rec_page_start); + + /* + * Clear all interrupts. A '1' in each bit position clears the + * corresponding flag. + */ + outb(sc->nic_addr + ED_P0_ISR, 0xff); + + /* + * Enable the following interrupts: receive/transmit complete, + * receive/transmit error, and Receiver OverWrite. + * + * Counter overflow and Remote DMA complete are *not* enabled. + */ + outb(sc->nic_addr + ED_P0_IMR, + ED_IMR_PRXE|ED_IMR_PTXE|ED_IMR_RXEE|ED_IMR_TXEE|ED_IMR_OVWE); + + /* + * Program Command Register for page 1 + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_1|ED_CR_RD2|ED_CR_STP); + + /* + * Copy out our station address + */ + for (i = 0; i < ETHER_ADDR_LEN; ++i) + outb(sc->nic_addr + ED_P1_PAR0 + i, sc->arpcom.ac_enaddr[i]); + +#if NBPFILTER > 0 + /* + * Initialize multicast address hashing registers to accept + * all multicasts (only used when in promiscuous mode) + */ + for (i = 0; i < 8; ++i) + outb(sc->nic_addr + ED_P1_MAR0 + i, 0xff); +#endif + + /* + * Set Current Page pointer to next_packet (initialized above) + */ + outb(sc->nic_addr + ED_P1_CURR, sc->next_packet); + + /* + * Set Command Register for page 0, Remote DMA complete, + * and interface Start. + */ + outb(sc->nic_addr + ED_P1_CR, ED_CR_RD2|ED_CR_STA); + + /* + * Take interface out of loopback + */ + outb(sc->nic_addr + ED_P0_TCR, 0); + + /* + * Set 'running' flag, and clear output active flag. + */ + ifp->if_flags |= IFF_RUNNING; + ifp->if_flags &= ~IFF_OACTIVE; + + /* + * ...and attempt to start output + */ + ed_start(ifp); + + (void) splx(s); +} + +static inline void ed_xmit(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc = &ed_softc[ifp->if_unit]; + u_short len = sc->txb_next_len; + + /* + * Set NIC for page 0 register access + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + + /* + * Set TX buffer start page + */ + outb(sc->nic_addr + ED_P0_TPSR, sc->tx_page_start + + sc->txb_next * ED_TXBUF_SIZE); + + /* + * Set TX length + */ + outb(sc->nic_addr + ED_P0_TBCR0, len & 0xff); + outb(sc->nic_addr + ED_P0_TBCR1, len >> 8); + + /* + * Set page 0, Remote DMA complete, Transmit Packet, and Start + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_TXP|ED_CR_STA); + + sc->xmit_busy = 1; + sc->data_buffered = 0; + + if ((sc->txb_next == 0) && (sc->txb_cnt > 1)) + sc->txb_next = 1; + else + sc->txb_next = 0; + + /* + * Set a timer just in case we never hear from the board again + */ + ifp->if_timer = 2; +} + +/* + * Start output on interface. + * We make two assumptions here: + * 1) that the current priority is set to splnet _before_ this code + * is called *and* is returned to the appropriate priority after + * return + * 2) that the IFF_OACTIVE flag is checked before this code is called + * (i.e. that the output part of the interface is idle) + */ +int +ed_start(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc = &ed_softc[ifp->if_unit]; + struct mbuf *m0, *m; + caddr_t buffer; + int len; + u_char laar_tmp; + +outloop: + if (sc->data_buffered) + if (sc->xmit_busy) { + ifp->if_flags |= IFF_OACTIVE; + return; + } else { + /* + * Note that ed_xmit() resets the data_buffered flag + * before returning + */ + ed_xmit(ifp); + } + + IF_DEQUEUE(&sc->arpcom.ac_if.if_snd, m); + if (m == 0) { + /* + * The following isn't pretty; we are using the !OACTIVE flag to + * indicate to the outside world that we can accept an additional + * packet rather than that the transmitter is _actually_ + * active. Indeed, the transmitter may be active, but if we haven't + * filled the secondary buffer with data then we still want to + * accept more. + * Note that it isn't necessary to test the data_buffered flag - + * we wouldn't have tried to de-queue the packet in the first place + * if it was set. + */ + ifp->if_flags &= ~IFF_OACTIVE; + return; + } + + /* + * Copy the mbuf chain into the transmit buffer + */ + /* + * Enable 16bit access to shared memory on WD/SMC boards + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + laar_tmp = inb(sc->asic_addr + ED_WD_LAAR); + outb(sc->asic_addr + ED_WD_LAAR, laar_tmp | ED_WD_LAAR_M16EN); + } + + buffer = sc->smem_start + (sc->txb_next * ED_TXBUF_SIZE * ED_PAGE_SIZE); + len = 0; + for (m0 = m; m != 0; m = m->m_next) { + bcopy(mtod(m, caddr_t), buffer, m->m_len); + buffer += m->m_len; + len += m->m_len; + } + + /* + * Restore previous shared mem access type + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + outb(sc->asic_addr + ED_WD_LAAR, laar_tmp); + } + + sc->txb_next_len = MAX(len, ETHER_MIN_LEN); + + if (sc->txb_cnt > 1) + /* + * only set 'buffered' flag if doing multiple buffers + */ + sc->data_buffered = 1; + + if (sc->xmit_busy == 0) + ed_xmit(ifp); + /* + * If there is BPF support in the configuration, tap off here. + * The following has support for converting trailer packets + * back to normal. + */ +#if NBPFILTER > 0 + if (sc->bpf) { + u_short etype; + int off, datasize, resid; + struct ether_header *eh; + struct trailer_header { + u_short ether_type; + u_short ether_residual; + } trailer_header; + char ether_packet[ETHER_MAX_LEN]; + char *ep; + + ep = ether_packet; + + /* + * We handle trailers below: + * Copy ether header first, then residual data, + * then data. Put all this in a temporary buffer + * 'ether_packet' and send off to bpf. Since the + * system has generated this packet, we assume + * that all of the offsets in the packet are + * correct; if they're not, the system will almost + * certainly crash in m_copydata. + * We make no assumptions about how the data is + * arranged in the mbuf chain (i.e. how much + * data is in each mbuf, if mbuf clusters are + * used, etc.), which is why we use m_copydata + * to get the ether header rather than assume + * that this is located in the first mbuf. + */ + /* copy ether header */ + m_copydata(m0, 0, sizeof(struct ether_header), ep); + eh = (struct ether_header *) ep; + ep += sizeof(struct ether_header); + etype = ntohs(eh->ether_type); + if (etype >= ETHERTYPE_TRAIL && + etype < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { + datasize = ((etype - ETHERTYPE_TRAIL) << 9); + off = datasize + sizeof(struct ether_header); + + /* copy trailer_header into a data structure */ + m_copydata(m0, off, sizeof(struct trailer_header), + &trailer_header.ether_type); + + /* copy residual data */ + m_copydata(m0, off+sizeof(struct trailer_header), + resid = ntohs(trailer_header.ether_residual) - + sizeof(struct trailer_header), ep); + ep += resid; + + /* copy data */ + m_copydata(m0, sizeof(struct ether_header), + datasize, ep); + ep += datasize; + + /* restore original ether packet type */ + eh->ether_type = trailer_header.ether_type; + + bpf_tap(sc->bpf, ether_packet, ep - ether_packet); + } else + bpf_mtap(sc->bpf, m0); + } +#endif + + m_freem(m0); + + if (sc->txb_cnt > 1) + goto outloop; + else { + ifp->if_flags |= IFF_OACTIVE; + return; + } +} + +/* + * Ethernet interface receiver interrupt. + */ +static inline void /* only called from one place, so may as well integrate */ +ed_rint(unit) + int unit; +{ + register struct ed_softc *sc = &ed_softc[unit]; + u_char boundry, current; + u_short len; + struct ed_ring *packet_ptr; + + /* + * Set NIC to page 1 registers to get 'current' pointer + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_1|ED_CR_RD2|ED_CR_STA); + + /* + * 'sc->next_packet' is the logical beginning of the ring-buffer - i.e. + * it points to where new data has been buffered. The 'CURR' + * (current) register points to the logical end of the ring-buffer + * - i.e. it points to where additional new data will be added. + * We loop here until the logical beginning equals the logical + * end (or in other words, until the ring-buffer is empty). + */ + while (sc->next_packet != inb(sc->nic_addr + ED_P1_CURR)) { + + /* get pointer to this buffer header structure */ + packet_ptr = (struct ed_ring *)(sc->smem_ring + + (sc->next_packet - sc->rec_page_start) * ED_PAGE_SIZE); + + /* + * The byte count includes the FCS - Frame Check Sequence (a + * 32 bit CRC). + */ + len = packet_ptr->count; + if ((len >= ETHER_MIN_LEN) && (len <= ETHER_MAX_LEN)) { + /* + * Go get packet. len - 4 removes CRC from length. + * (packet_ptr + 1) points to data just after the packet ring + * header (+4 bytes) + */ + ed_get_packet(sc, (caddr_t)(packet_ptr + 1), len - 4); + ++sc->arpcom.ac_if.if_ipackets; + } else { + /* + * Really BAD...probably indicates that the ring pointers + * are corrupted. Also seen on early rev chips under + * high load - the byte order of the length gets switched. + */ + log(LOG_ERR, + "ed%d: shared memory corrupt - invalid packet length %d\n", + unit, len); + ed_reset(unit); + return; + } + + /* + * Update next packet pointer + */ + sc->next_packet = packet_ptr->next_packet; + + /* + * Update NIC boundry pointer - being careful to keep it + * one buffer behind. (as recommended by NS databook) + */ + boundry = sc->next_packet - 1; + if (boundry < sc->rec_page_start) + boundry = sc->rec_page_stop - 1; + + /* + * Set NIC to page 0 registers to update boundry register + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + + outb(sc->nic_addr + ED_P0_BNRY, boundry); + + /* + * Set NIC to page 1 registers before looping to top (prepare to + * get 'CURR' current pointer) + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_PAGE_1|ED_CR_RD2|ED_CR_STA); + } +} + +/* + * Ethernet interface interrupt processor + */ +int +edintr(unit) + int unit; +{ + struct ed_softc *sc = &ed_softc[unit]; + u_char isr; + + /* + * Set NIC to page 0 registers + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + + /* + * loop until there are no more new interrupts + */ + while (isr = inb(sc->nic_addr + ED_P0_ISR)) { + + /* + * reset all the bits that we are 'acknowleging' + * by writing a '1' to each bit position that was set + * (writing a '1' *clears* the bit) + */ + outb(sc->nic_addr + ED_P0_ISR, isr); + + /* + * Transmit error. If a TX completed with an error, we end up + * throwing the packet away. Really the only error that is + * possible is excessive collisions, and in this case it is + * best to allow the automatic mechanisms of TCP to backoff + * the flow. Of course, with UDP we're screwed, but this is + * expected when a network is heavily loaded. + */ + if (isr & ED_ISR_TXE) { + u_char tsr = inb(sc->nic_addr + ED_P0_TSR); + u_char ncr = inb(sc->nic_addr + ED_P0_NCR); + + /* + * Excessive collisions (16) + */ + if ((tsr & ED_TSR_ABT) && (ncr == 0)) { + /* + * When collisions total 16, the P0_NCR will + * indicate 0, and the TSR_ABT is set. + */ + sc->arpcom.ac_if.if_collisions += 16; + } else + sc->arpcom.ac_if.if_collisions += ncr; + + /* + * update output errors counter + */ + ++sc->arpcom.ac_if.if_oerrors; + + /* + * reset tx busy and output active flags + */ + sc->xmit_busy = 0; + sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; + + /* + * reset watchdog timer + */ + sc->arpcom.ac_if.if_timer = 0; + } + + + /* + * Receiver Error. One or more of: CRC error, frame alignment error + * FIFO overrun, or missed packet. + */ + if (isr & ED_ISR_RXE) { + ++sc->arpcom.ac_if.if_ierrors; + } + + /* + * Overwrite warning. In order to make sure that a lockup + * of the local DMA hasn't occurred, we reset and + * re-init the NIC. The NSC manual suggests only a + * partial reset/re-init is necessary - but some + * chips seem to want more. The DMA lockup has been + * seen only with early rev chips - Methinks this + * bug was fixed in later revs. -DG + */ + if (isr & ED_ISR_OVW) { + ++sc->arpcom.ac_if.if_ierrors; + log(LOG_WARNING, + "ed%d: warning - receiver ring buffer overrun\n", + unit); + /* + * Stop/reset/re-init NIC + */ + ed_reset(unit); + } + + /* + * Transmission completed normally. + */ + if (isr & ED_ISR_PTX) { + + /* + * reset tx busy and output active flags + */ + sc->xmit_busy = 0; + sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; + + /* + * reset watchdog timer + */ + sc->arpcom.ac_if.if_timer = 0; + + /* + * Update total number of successfully transmitted + * packets. + */ + ++sc->arpcom.ac_if.if_opackets; + + /* + * Add in total number of collisions on last + * transmission. + */ + sc->arpcom.ac_if.if_collisions += inb(sc->nic_addr + + ED_P0_TBCR0); + } + + /* + * Receive Completion. Go and get the packet. + * XXX - Doing this on an error is dubious because there + * shouldn't be any data to get (we've configured the + * interface to not accept packets with errors). + */ + if (isr & (ED_ISR_PRX|ED_ISR_RXE)) { + /* + * Enable access to shared memory on WD/SMC boards + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + outb(sc->asic_addr + ED_WD_LAAR, + inb(sc->asic_addr + ED_WD_LAAR) + | ED_WD_LAAR_M16EN); + } + + ed_rint (unit); + + /* + * Disable access to shared memory + */ + if (sc->memwidth == 16) + if (sc->vendor == ED_VENDOR_WD_SMC) { + outb(sc->asic_addr + ED_WD_LAAR, + inb(sc->asic_addr + ED_WD_LAAR) + & ~ED_WD_LAAR_M16EN); + } + } + + /* + * If it looks like the transmitter can take more data, + * attempt to start output on the interface. If data is + * already buffered and ready to go, send it first. + */ + if ((sc->arpcom.ac_if.if_flags & IFF_OACTIVE) == 0) { + if (sc->data_buffered) + ed_xmit(&sc->arpcom.ac_if); + ed_start(&sc->arpcom.ac_if); + } + + /* + * return NIC CR to standard state before looping back + * to top: page 0, remote DMA complete, start + * (toggling the TXP bit off, even if was just set in the + * transmit routine, is *okay* - it is 'edge' triggered + * from low to high) + */ + outb(sc->nic_addr + ED_P0_CR, ED_CR_RD2|ED_CR_STA); + } +} + +/* + * Process an ioctl request. This code needs some work - it looks + * pretty ugly. + */ +int +ed_ioctl(ifp, command, data) + register struct ifnet *ifp; + int command; + caddr_t data; +{ + register struct ifaddr *ifa = (struct ifaddr *)data; + struct ed_softc *sc = &ed_softc[ifp->if_unit]; + struct ifreq *ifr = (struct ifreq *)data; + int s, error = 0; + + s = splnet(); + + switch (command) { + + case SIOCSIFADDR: + ifp->if_flags |= IFF_UP; + + switch (ifa->ifa_addr->sa_family) { +#ifdef INET + case AF_INET: + ed_init(ifp->if_unit); /* before arpwhohas */ + /* + * See if another station has *our* IP address. + * i.e.: There is an address conflict! If a + * conflict exists, a message is sent to the + * console. + */ + ((struct arpcom *)ifp)->ac_ipaddr = + IA_SIN(ifa)->sin_addr; + arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); + break; +#endif +#ifdef NS + /* + * XXX - This code is probably wrong + */ + case AF_NS: + { + register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); + + if (ns_nullhost(*ina)) + ina->x_host = + *(union ns_host *)(sc->arpcom.ac_enaddr); + else { + /* + * + */ + bcopy((caddr_t)ina->x_host.c_host, + (caddr_t)sc->arpcom.ac_enaddr, + sizeof(sc->arpcom.ac_enaddr)); + } + /* + * Set new address + */ + ed_init(ifp->if_unit); + break; + } +#endif + default: + ed_init(ifp->if_unit); + break; + } + break; + + case SIOCSIFFLAGS: + /* + * If interface is marked down and it is running, then stop it + */ + if (((ifp->if_flags & IFF_UP) == 0) && + (ifp->if_flags & IFF_RUNNING)) { + ed_stop(ifp->if_unit); + ifp->if_flags &= ~IFF_RUNNING; + } else { + /* + * If interface is marked up and it is stopped, then start it + */ + if ((ifp->if_flags & IFF_UP) && + ((ifp->if_flags & IFF_RUNNING) == 0)) + ed_init(ifp->if_unit); + } +#if NBPFILTER > 0 + if (ifp->if_flags & IFF_PROMISC) { + /* + * Set promiscuous mode on interface. + * XXX - for multicasts to work, we would need to + * write 1's in all bits of multicast + * hashing array. For now we assume that + * this was done in ed_init(). + */ + outb(sc->nic_addr + ED_P0_RCR, + ED_RCR_PRO|ED_RCR_AM|ED_RCR_AB); + } else + /* + * XXX - for multicasts to work, we would need to + * rewrite the multicast hashing array with the + * proper hash (would have been destroyed above). + */ + outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB); +#endif + break; + + default: + error = EINVAL; + } + (void) splx(s); + return (error); +} + +/* + * Macro to calculate a new address within shared memory when given an offset + * from an address, taking into account ring-wrap. + */ +#define ringoffset(sc, start, off, type) \ + ((type)( ((caddr_t)(start)+(off) >= (sc)->smem_end) ? \ + (((caddr_t)(start)+(off))) - (sc)->smem_end \ + + (sc)->smem_ring: \ + ((caddr_t)(start)+(off)) )) + +/* + * Retreive packet from shared memory and send to the next level up via + * ether_input(). If there is a BPF listener, give a copy to BPF, too. + */ +ed_get_packet(sc, buf, len) + struct ed_softc *sc; + char *buf; + u_short len; +{ + struct ether_header *eh; + struct mbuf *m, *head, *ed_ring_to_mbuf(); + u_short off; + int resid; + u_short etype; + struct trailer_header { + u_short trail_type; + u_short trail_residual; + } trailer_header; + + /* Allocate a header mbuf */ + MGETHDR(m, M_DONTWAIT, MT_DATA); + if (m == 0) + goto bad; + m->m_pkthdr.rcvif = &sc->arpcom.ac_if; + m->m_pkthdr.len = len; + m->m_len = 0; + head = m; + + eh = (struct ether_header *)buf; + + /* The following sillines is to make NFS happy */ +#define EROUND ((sizeof(struct ether_header) + 3) & ~3) +#define EOFF (EROUND - sizeof(struct ether_header)) + + /* + * The following assumes there is room for + * the ether header in the header mbuf + */ + head->m_data += EOFF; + bcopy(buf, mtod(head, caddr_t), sizeof(struct ether_header)); + buf += sizeof(struct ether_header); + head->m_len += sizeof(struct ether_header); + len -= sizeof(struct ether_header); + + etype = ntohs((u_short)eh->ether_type); + + /* + * Deal with trailer protocol: + * If trailer protocol, calculate the datasize as 'off', + * which is also the offset to the trailer header. + * Set resid to the amount of packet data following the + * trailer header. + * Finally, copy residual data into mbuf chain. + */ + if (etype >= ETHERTYPE_TRAIL && + etype < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { + + off = (etype - ETHERTYPE_TRAIL) << 9; + if ((off + sizeof(struct trailer_header)) > len) + goto bad; /* insanity */ + + eh->ether_type = *ringoffset(sc, buf, off, u_short *); + resid = ntohs(*ringoffset(sc, buf, off+2, u_short *)); + + if ((off + resid) > len) goto bad; /* insanity */ + + resid -= sizeof(struct trailer_header); + if (resid < 0) goto bad; /* insanity */ + + m = ed_ring_to_mbuf(sc, ringoffset(sc, buf, off+4, char *), head, resid); + if (m == 0) goto bad; + + len = off; + head->m_pkthdr.len -= 4; /* subtract trailer header */ + } + + /* + * Pull packet off interface. Or if this was a trailer packet, + * the data portion is appended. + */ + m = ed_ring_to_mbuf(sc, buf, m, len); + if (m == 0) goto bad; + +#if NBPFILTER > 0 + /* + * Check if there's a BPF listener on this interface. + * If so, hand off the raw packet to bpf. + */ + if (sc->bpf) { + bpf_mtap(sc->bpf, head); + + /* + * Note that the interface cannot be in promiscuous mode if + * there are no BPF listeners. And if we are in promiscuous + * mode, we have to check if this packet is really ours. + * + * XXX This test does not support multicasts. + */ + if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) && + bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, + sizeof(eh->ether_dhost)) != 0 && + bcmp(eh->ether_dhost, etherbroadcastaddr, + sizeof(eh->ether_dhost)) != 0) { + + m_freem(head); + return; + } + } +#endif + + /* + * Fix up data start offset in mbuf to point past ether header + */ + m_adj(head, sizeof(struct ether_header)); + + /* + * silly ether_input routine needs 'type' in host byte order + */ + eh->ether_type = ntohs(eh->ether_type); + + ether_input(&sc->arpcom.ac_if, eh, head); + return; + +bad: if (head) + m_freem(head); + return; +} + +/* + * Supporting routines + */ + +/* + * Given a source and destination address, copy 'amount' of a packet from + * the ring buffer into a linear destination buffer. Takes into account + * ring-wrap. + */ +static inline char * +ed_ring_copy(sc,src,dst,amount) + struct ed_softc *sc; + char *src; + char *dst; + u_short amount; +{ + u_short tmp_amount; + + /* does copy wrap to lower addr in ring buffer? */ + if (src + amount > sc->smem_end) { + tmp_amount = sc->smem_end - src; + bcopy(src,dst,tmp_amount); /* copy amount up to end of smem */ + amount -= tmp_amount; + src = sc->smem_ring; + dst += tmp_amount; + } + + bcopy(src, dst, amount); + + return(src + amount); +} + +/* + * Copy data from receive buffer to end of mbuf chain + * allocate additional mbufs as needed. return pointer + * to last mbuf in chain. + * sc = ed info (softc) + * src = pointer in ed ring buffer + * dst = pointer to last mbuf in mbuf chain to copy to + * amount = amount of data to copy + */ +struct mbuf * +ed_ring_to_mbuf(sc,src,dst,total_len) + struct ed_softc *sc; + char *src; + struct mbuf *dst; + u_short total_len; +{ + register struct mbuf *m = dst; + + while (total_len) { + register u_short amount = min(total_len, M_TRAILINGSPACE(m)); + + if (amount == 0) { /* no more data in this mbuf, alloc another */ + /* + * if there is enough data for an mbuf cluster, attempt + * to allocate one of those, otherwise, a regular mbuf + * will do. + */ + dst = m; + MGET(m, M_DONTWAIT, MT_DATA); + if (m == 0) + return (0); + + if (total_len >= MINCLSIZE) + MCLGET(m, M_DONTWAIT); + + m->m_len = 0; + dst->m_next = m; + amount = min(total_len, M_TRAILINGSPACE(m)); + } + + src = ed_ring_copy(sc, src, mtod(m, caddr_t) + m->m_len, amount); + + m->m_len += amount; + total_len -= amount; + + } + return (m); +} +#endif + diff --git a/sys/i386/isa/if_edreg.h b/sys/i386/isa/if_edreg.h new file mode 100644 index 0000000..00d36b3 --- /dev/null +++ b/sys/i386/isa/if_edreg.h @@ -0,0 +1,781 @@ +/* + * National Semiconductor DS8390 NIC register definitions + */ + +/* + * Page 0 register offsets + */ +#define ED_P0_CR 0x00 /* Command Register */ + +#define ED_P0_CLDA0 0x01 /* Current Local DMA Addr low (read) */ +#define ED_P0_PSTART 0x01 /* Page Start register (write) */ + +#define ED_P0_CLDA1 0x02 /* Current Local DMA Addr high (read) */ +#define ED_P0_PSTOP 0x02 /* Page Stop register (write) */ + +#define ED_P0_BNRY 0x03 /* Boundary Pointer */ + +#define ED_P0_TSR 0x04 /* Transmit Status Register (read) */ +#define ED_P0_TPSR 0x04 /* Transmit Page Start (write) */ + +#define ED_P0_NCR 0x05 /* Number of Collisions Reg (read) */ +#define ED_P0_TBCR0 0x05 /* Transmit Byte count, low (write) */ + +#define ED_P0_FIFO 0x06 /* FIFO register (read) */ +#define ED_P0_TBCR1 0x06 /* Transmit Byte count, high (write) */ + +#define ED_P0_ISR 0x07 /* Interrupt Status Register */ + +#define ED_P0_CRDA0 0x08 /* Current Remote DMA Addr low (read) */ +#define ED_P0_RSAR0 0x08 /* Remote Start Address low (write) */ + +#define ED_P0_CRDA1 0x09 /* Current Remote DMA Addr high (read) */ +#define ED_P0_RSAR1 0x09 /* Remote Start Address high (write) */ + +#define ED_P0_RBCR0 0x0a /* Remote Byte Count low (write) */ + +#define ED_P0_RBCR1 0x0b /* Remote Byte Count high (write) */ + +#define ED_P0_RSR 0x0c /* Receive Status (read) */ +#define ED_P0_RCR 0x0c /* Receive Configuration Reg (write) */ + +#define ED_P0_CNTR0 0x0d /* frame alignment error counter (read) */ +#define ED_P0_TCR 0x0d /* Transmit Configuration Reg (write) */ + +#define ED_P0_CNTR1 0x0e /* CRC error counter (read) */ +#define ED_P0_DCR 0x0e /* Data Configuration Reg (write) */ + +#define ED_P0_CNTR2 0x0f /* missed packet counter (read) */ +#define ED_P0_IMR 0x0f /* Interrupt Mask Register (write) */ + +/* + * Page 1 register offsets + */ +#define ED_P1_CR 0x00 /* Command Register */ +#define ED_P1_PAR0 0x01 /* Physical Address Register 0 */ +#define ED_P1_PAR1 0x02 /* Physical Address Register 1 */ +#define ED_P1_PAR2 0x03 /* Physical Address Register 2 */ +#define ED_P1_PAR3 0x04 /* Physical Address Register 3 */ +#define ED_P1_PAR4 0x05 /* Physical Address Register 4 */ +#define ED_P1_PAR5 0x06 /* Physical Address Register 5 */ +#define ED_P1_CURR 0x07 /* Current RX ring-buffer page */ +#define ED_P1_MAR0 0x08 /* Multicast Address Register 0 */ +#define ED_P1_MAR1 0x09 /* Multicast Address Register 1 */ +#define ED_P1_MAR2 0x0a /* Multicast Address Register 2 */ +#define ED_P1_MAR3 0x0b /* Multicast Address Register 3 */ +#define ED_P1_MAR4 0x0c /* Multicast Address Register 4 */ +#define ED_P1_MAR5 0x0d /* Multicast Address Register 5 */ +#define ED_P1_MAR6 0x0e /* Multicast Address Register 6 */ +#define ED_P1_MAR7 0x0f /* Multicast Address Register 7 */ + +/* + * Page 2 register offsets + */ +#define ED_P2_CR 0x00 /* Command Register */ +#define ED_P2_PSTART 0x01 /* Page Start (read) */ +#define ED_P2_CLDA0 0x01 /* Current Local DMA Addr 0 (write) */ +#define ED_P2_PSTOP 0x02 /* Page Stop (read) */ +#define ED_P2_CLDA1 0x02 /* Current Local DMA Addr 1 (write) */ +#define ED_P2_RNPP 0x03 /* Remote Next Packet Pointer */ +#define ED_P2_TPSR 0x04 /* Transmit Page Start (read) */ +#define ED_P2_LNPP 0x05 /* Local Next Packet Pointer */ +#define ED_P2_ACU 0x06 /* Address Counter Upper */ +#define ED_P2_ACL 0x07 /* Address Counter Lower */ +#define ED_P2_RCR 0x0c /* Receive Configuration Register (read) */ +#define ED_P2_TCR 0x0d /* Transmit Configuration Register (read) */ +#define ED_P2_DCR 0x0e /* Data Configuration Register (read) */ +#define ED_P2_IMR 0x0f /* Interrupt Mask Register (read) */ + +/* + * Command Register (CR) definitions + */ + +/* + * STP: SToP. Software reset command. Takes the controller offline. No + * packets will be received or transmitted. Any reception or + * transmission in progress will continue to completion before + * entering reset state. To exit this state, the STP bit must + * reset and the STA bit must be set. The software reset has + * executed only when indicated by the RST bit in the ISR being + * set. + */ +#define ED_CR_STP 0x01 + +/* + * STA: STArt. This bit is used to activate the NIC after either power-up, + * or when the NIC has been put in reset mode by software command + * or error. + */ +#define ED_CR_STA 0x02 + +/* + * TXP: Transmit Packet. This bit must be set to indicate transmission of + * a packet. TXP is internally reset either after the transmission is + * completed or aborted. This bit should be set only after the Transmit + * Byte Count and Transmit Page Start register have been programmed. + */ +#define ED_CR_TXP 0x04 + +/* + * RD0, RD1, RD2: Remote DMA Command. These three bits control the operation + * of the remote DMA channel. RD2 can be set to abort any remote DMA + * command in progress. The Remote Byte Count registers should be cleared + * when a remote DMA has been aborted. The Remote Start Addresses are not + * restored to the starting address if the remote DMA is aborted. + * + * RD2 RD1 RD0 function + * 0 0 0 not allowed + * 0 0 1 remote read + * 0 1 0 remote write + * 0 1 1 send packet + * 1 X X abort + */ +#define ED_CR_RD0 0x08 +#define ED_CR_RD1 0x10 +#define ED_CR_RD2 0x20 + +/* + * PS0, PS1: Page Select. The two bits select which register set or 'page' to + * access. + * + * PS1 PS0 page + * 0 0 0 + * 0 1 1 + * 1 0 2 + * 1 1 reserved + */ +#define ED_CR_PS0 0x40 +#define ED_CR_PS1 0x80 +/* bit encoded aliases */ +#define ED_CR_PAGE_0 0x00 /* (for consistency) */ +#define ED_CR_PAGE_1 0x40 +#define ED_CR_PAGE_2 0x80 + +/* + * Interrupt Status Register (ISR) definitions + */ + +/* + * PRX: Packet Received. Indicates packet received with no errors. + */ +#define ED_ISR_PRX 0x01 + +/* + * PTX: Packet Transmitted. Indicates packet transmitted with no errors. + */ +#define ED_ISR_PTX 0x02 + +/* + * RXE: Receive Error. Indicates that a packet was received with one or more + * the following errors: CRC error, frame alignment error, FIFO overrun, + * missed packet. + */ +#define ED_ISR_RXE 0x04 + +/* + * TXE: Transmission Error. Indicates that an attempt to transmit a packet + * resulted in one or more of the following errors: excessive + * collisions, FIFO underrun. + */ +#define ED_ISR_TXE 0x08 + +/* + * OVW: OverWrite. Indicates a receive ring-buffer overrun. Incoming network + * would exceed (has exceeded?) the boundry pointer, resulting in data + * that was previously received and not yet read from the buffer to be + * overwritten. + */ +#define ED_ISR_OVW 0x10 + +/* + * CNT: Counter Overflow. Set when the MSB of one or more of the Network Talley + * Counters has been set. + */ +#define ED_ISR_CNT 0x20 + +/* + * RDC: Remote Data Complete. Indicates that a Remote DMA operation has completed. + */ +#define ED_ISR_RDC 0x40 + +/* + * RST: Reset status. Set when the NIC enters the reset state and cleared when a + * Start Command is issued to the CR. This bit is also set when a receive + * ring-buffer overrun (OverWrite) occurs and is cleared when one or more + * packets have been removed from the ring. This is a read-only bit. + */ +#define ED_ISR_RST 0x80 + +/* + * Interrupt Mask Register (IMR) definitions + */ + +/* + * PRXE: Packet Received interrupt Enable. If set, a received packet will cause + * an interrupt. + */ +#define ED_IMR_PRXE 0x01 + +/* + * PTXE: Packet Transmit interrupt Enable. If set, an interrupt is generated when + * a packet transmission completes. + */ +#define ED_IMR_PTXE 0x02 + +/* + * RXEE: Receive Error interrupt Enable. If set, an interrupt will occur whenever a + * packet is received with an error. + */ +#define ED_IMR_RXEE 0x04 + +/* + * TXEE: Transmit Error interrupt Enable. If set, an interrupt will occur whenever + * a transmission results in an error. + */ +#define ED_IMR_TXEE 0x08 + +/* + * OVWE: OverWrite error interrupt Enable. If set, an interrupt is generated whenever + * the receive ring-buffer is overrun. i.e. when the boundry pointer is exceeded. + */ +#define ED_IMR_OVWE 0x10 + +/* + * CNTE: Counter overflow interrupt Enable. If set, an interrupt is generated whenever + * the MSB of one or more of the Network Statistics counters has been set. + */ +#define ED_IMR_CNTE 0x20 + +/* + * RDCE: Remote DMA Complete interrupt Enable. If set, an interrupt is generated + * when a remote DMA transfer has completed. + */ +#define ED_IMR_RDCE 0x40 + +/* + * bit 7 is unused/reserved + */ + +/* + * Data Configuration Register (DCR) definitions + */ + +/* + * WTS: Word Transfer Select. WTS establishes byte or word transfers for + * both remote and local DMA transfers + */ +#define ED_DCR_WTS 0x01 + +/* + * BOS: Byte Order Select. BOS sets the byte order for the host. + * Should be 0 for 80x86, and 1 for 68000 series processors + */ +#define ED_DCR_BOS 0x02 + +/* + * LAS: Long Address Select. When LAS is 1, the contents of the remote + * DMA registers RSAR0 and RSAR1 are used to provide A16-A31 + */ +#define ED_DCR_LAS 0x04 + +/* + * LS: Loopback Select. When 0, loopback mode is selected. Bits D1 and D2 + * of the TCR must also be programmed for loopback operation. + * When 1, normal operation is selected. + */ +#define ED_DCR_LS 0x08 + +/* + * AR: Auto-initialize Remote. When 0, data must be removed from ring-buffer + * under program control. When 1, remote DMA is automatically initiated + * and the boundry pointer is automatically updated + */ +#define ED_DCR_AR 0x10 + +/* + * FT0, FT1: Fifo Threshold select. + * FT1 FT0 Word-width Byte-width + * 0 0 1 word 2 bytes + * 0 1 2 words 4 bytes + * 1 0 4 words 8 bytes + * 1 1 8 words 12 bytes + * + * During transmission, the FIFO threshold indicates the number of bytes + * or words that the FIFO has filled from the local DMA before BREQ is + * asserted. The transmission threshold is 16 bytes minus the receiver + * threshold. + */ +#define ED_DCR_FT0 0x20 +#define ED_DCR_FT1 0x40 + +/* + * bit 7 (0x80) is unused/reserved + */ + +/* + * Transmit Configuration Register (TCR) definitions + */ + +/* + * CRC: Inhibit CRC. If 0, CRC will be appended by the transmitter, if 0, CRC + * is not appended by the transmitter. + */ +#define ED_TCR_CRC 0x01 + +/* + * LB0, LB1: Loopback control. These two bits set the type of loopback that is + * to be performed. + * + * LB1 LB0 mode + * 0 0 0 - normal operation (DCR_LS = 0) + * 0 1 1 - internal loopback (DCR_LS = 0) + * 1 0 2 - external loopback (DCR_LS = 1) + * 1 1 3 - external loopback (DCR_LS = 0) + */ +#define ED_TCR_LB0 0x02 +#define ED_TCR_LB1 0x04 + +/* + * ATD: Auto Transmit Disable. Clear for normal operation. When set, allows + * another station to disable the NIC's transmitter by transmitting to + * a multicast address hashing to bit 62. Reception of a multicast address + * hashing to bit 63 enables the transmitter. + */ +#define ED_TCR_ATD 0x08 + +/* + * OFST: Collision Offset enable. This bit when set modifies the backoff + * algorithm to allow prioritization of nodes. + */ +#define ED_TCR_OFST 0x10 + +/* + * bits 5, 6, and 7 are unused/reserved + */ + +/* + * Transmit Status Register (TSR) definitions + */ + +/* + * PTX: Packet Transmitted. Indicates successful transmission of packet. + */ +#define ED_TSR_PTX 0x01 + +/* + * bit 1 (0x02) is unused/reserved + */ + +/* + * COL: Transmit Collided. Indicates that the transmission collided at least + * once with another station on the network. + */ +#define ED_TSR_COL 0x04 + +/* + * ABT: Transmit aborted. Indicates that the transmission was aborted due to + * excessive collisions. + */ +#define ED_TSR_ABT 0x08 + +/* + * CRS: Carrier Sense Lost. Indicates that carrier was lost during the + * transmission of the packet. (Transmission is not aborted because + * of a loss of carrier) + */ +#define ED_TSR_CRS 0x10 + +/* + * FU: FIFO Underrun. Indicates that the NIC wasn't able to access bus/ + * transmission memory before the FIFO emptied. Transmission of the + * packet was aborted. + */ +#define ED_TSR_FU 0x20 + +/* + * CDH: CD Heartbeat. Indicates that the collision detection circuitry + * isn't working correctly during a collision heartbeat test. + */ +#define ED_TSR_CDH 0x40 + +/* + * OWC: Out of Window Collision: Indicates that a collision occurred after + * a slot time (51.2us). The transmission is rescheduled just as in + * normal collisions. + */ +#define ED_TSR_OWC 0x80 + +/* + * Receiver Configuration Register (RCR) definitions + */ + +/* + * SEP: Save Errored Packets. If 0, error packets are discarded. If set to 1, + * packets with CRC and frame errors are not discarded. + */ +#define ED_RCR_SEP 0x01 + +/* + * AR: Accept Runt packet. If 0, packet with less than 64 byte are discarded. + * If set to 1, packets with less than 64 byte are not discarded. + */ +#define ED_RCR_AR 0x02 + +/* + * AB: Accept Broadcast. If set, packets sent to the broadcast address will be + * accepted. + */ +#define ED_RCR_AB 0x04 + +/* + * AM: Accept Multicast. If set, packets sent to a multicast address are checked + * for a match in the hashing array. If clear, multicast packets are ignored. + */ +#define ED_RCR_AM 0x08 + +/* + * PRO: Promiscuous Physical. If set, all packets with a physical addresses are + * accepted. If clear, a physical destination address must match this + * station's address. Note: for full promiscuous mode, RCR_AB and RCR_AM + * must also be set. In addition, the multicast hashing array must be set + * to all 1's so that all multicast addresses are accepted. + */ +#define ED_RCR_PRO 0x10 + +/* + * MON: Monitor Mode. If set, packets will be checked for good CRC and framing, + * but are not stored in the ring-buffer. If clear, packets are stored (normal + * operation). + */ +#define ED_RCR_MON 0x20 + +/* + * bits 6 and 7 are unused/reserved. + */ + +/* + * Receiver Status Register (RSR) definitions + */ + +/* + * PRX: Packet Received without error. + */ +#define ED_RSR_PRX 0x01 + +/* + * CRC: CRC error. Indicates that a packet has a CRC error. Also set for frame + * alignment errors. + */ +#define ED_RSR_CRC 0x02 + +/* + * FAE: Frame Alignment Error. Indicates that the incoming packet did not end on + * a byte boundry and the CRC did not match at the last byte boundry. + */ +#define ED_RSR_FAE 0x04 + +/* + * FO: FIFO Overrun. Indicates that the FIFO was not serviced (during local DMA) + * causing it to overrun. Reception of the packet is aborted. + */ +#define ED_RSR_FO 0x08 + +/* + * MPA: Missed Packet. Indicates that the received packet couldn't be stored in + * the ring-buffer because of insufficient buffer space (exceeding the + * boundry pointer), or because the transfer to the ring-buffer was inhibited + * by RCR_MON - monitor mode. + */ +#define ED_RSR_MPA 0x10 + +/* + * PHY: Physical address. If 0, the packet received was sent to a physical address. + * If 1, the packet was accepted because of a multicast/broadcast address + * match. + */ +#define ED_RSR_PHY 0x20 + +/* + * DIS: Receiver Disabled. Set to indicate that the receiver has enetered monitor + * mode. Cleared when the receiver exits monitor mode. + */ +#define ED_RSR_DIS 0x40 + +/* + * DFR: Deferring. Set to indicate a 'jabber' condition. The CRS and COL inputs + * are active, and the transceiver has set the CD line as a result of the + * jabber. + */ +#define ED_RSR_DFR 0x80 + +/* + * receive ring discriptor + * + * The National Semiconductor DS8390 Network interface controller uses + * the following receive ring headers. The way this works is that the + * memory on the interface card is chopped up into 256 bytes blocks. + * A contiguous portion of those blocks are marked for receive packets + * by setting start and end block #'s in the NIC. For each packet that + * is put into the receive ring, one of these headers (4 bytes each) is + * tacked onto the front. + */ +struct ed_ring { + struct edr_status { /* received packet status */ + u_char rs_prx:1, /* packet received intack */ + rs_crc:1, /* crc error */ + rs_fae:1, /* frame alignment error */ + rs_fo:1, /* fifo overrun */ + rs_mpa:1, /* packet received intack */ + rs_phy:1, /* packet received intack */ + rs_dis:1, /* packet received intack */ + rs_dfr:1; /* packet received intack */ + } ed_rcv_status; /* received packet status */ + u_char next_packet; /* pointer to next packet */ + u_short count; /* bytes in packet (length + 4) */ +}; + +/* + * Common constants + */ +#define ED_PAGE_SIZE 256 /* Size of RAM pages in bytes */ +#define ED_TXBUF_SIZE 6 /* Size of TX buffer in pages */ + +/* + * Vendor types + */ +#define ED_VENDOR_WD_SMC 0x00 /* Western Digital/SMC */ +#define ED_VENDOR_3COM 0x01 /* 3Com */ + +/* + * Definitions for Western digital/SMC WD80x3 series ASIC + */ +/* + * Memory Select Register (MSR) + */ +#define ED_WD_MSR 0 + +#define ED_WD_MSR_ADDR 0x3f /* Memory decode bits 18-13 */ +#define ED_WD_MSR_MENB 0x40 /* Memory enable */ +#define ED_WD_MSR_RST 0x80 /* Reset board */ + +/* + * Interface Configuration Register (ICR) + */ +#define ED_WD_ICR 1 + +#define ED_WD_ICR_16BIT 0x01 /* 16-bit interface */ +#define ED_WD_ICR_OAR 0x02 /* select register. 0=BIO 1=EAR */ +#define ED_WD_ICR_IR2 0x04 /* select second set of IRQs */ +#define ED_WD_ICR_MSZ 0x08 /* memory size (0=8k 1=32k) */ +#define ED_WD_ICR_RLA 0x10 /* recall LAN address */ +#define ED_WD_ICR_RX7 0x20 /* recall all but i/o and LAN address */ +#define ED_WD_ICR_RIO 0x40 /* recall i/o address */ +#define ED_WD_ICR_STO 0x80 /* store to non-volatile memory */ + +/* + * Interrupt Request Register (IRR) + */ +#define ED_WD_IRR 4 + +#define ED_WD_IRR_0WS 0x01 /* use 0 wait-states on 8 bit bus */ +#define ED_WD_IRR_OUT1 0x02 /* WD83C584 pin 1 output */ +#define ED_WD_IRR_OUT2 0x04 /* WD83C584 pin 2 output */ +#define ED_WD_IRR_OUT3 0x08 /* WD83C584 pin 3 output */ +#define ED_WD_IRR_FLASH 0x10 /* Flash RAM is in the ROM socket */ +#define ED_WD_IRR_IEN 0x80 /* Interrupt enable */ + +/* + * LA Address Register (LAAR) + */ +#define ED_WD_LAAR 5 + +#define ED_WD_LAAR_ADDRHI 0x1f /* bits 23-19 of RAM address */ +#define ED_WD_LAAR_0WS16 0x20 /* enable 0 wait-states on 16 bit bus */ +#define ED_WD_LAAR_L16EN 0x40 /* enable 16-bit operation */ +#define ED_WD_LAAR_M16EN 0x80 /* enable 16-bit memory access */ + +/* i/o base offset to station address/card-ID PROM */ +#define ED_WD_PROM 8 + +/* i/o base offset to CARD ID */ +#define ED_WD_CARD_ID ED_WD_PROM+6 + +#define ED_TYPE_WD8003S 0x02 +#define ED_TYPE_WD8003E 0x03 +#define ED_TYPE_WD8013EBT 0x05 +#define ED_TYPE_WD8013EB 0x27 +#define ED_TYPE_WD8013EBP 0x2c +#define ED_TYPE_WD8013EPC 0x29 + +/* Bit definitions in card ID */ +#define ED_WD_REV_MASK 0x1f /* Revision mask */ +#define ED_WD_SOFTCONFIG 0x20 /* Soft config */ +#define ED_WD_LARGERAM 0x40 /* Large RAM */ +#define ED_MICROCHANEL 0x80 /* Microchannel bus (vs. isa) */ + +/* + * Checksum total. All 8 bytes in station address PROM will add up to this + */ +#define ED_WD_ROM_CHECKSUM_TOTAL 0xFF + +#define ED_WD_NIC_OFFSET 0x10 /* I/O base offset to NIC */ +#define ED_WD_ASIC_OFFSET 0 /* I/O base offset to ASIC */ +#define ED_WD_IO_PORTS 32 /* # of i/o addresses used */ + +#define ED_WD_PAGE_OFFSET 0 /* page offset for NIC access to mem */ + +/* + * Definitions for 3Com 3c503 + */ +#define ED_3COM_NIC_OFFSET 0 +#define ED_3COM_ASIC_OFFSET 0x400 /* offset to nic i/o regs */ + +/* + * XXX - The I/O address range is fragmented in the 3c503; this is the + * number of regs at iobase. + */ +#define ED_3COM_IO_PORTS 16 /* # of i/o addresses used */ + +#define ED_3COM_PAGE_OFFSET 0x20 /* memory starts in second bank */ + +/* + * Page Start Register. Must match PSTART in NIC + */ +#define ED_3COM_PSTR 0 + +/* + * Page Stop Register. Must match PSTOP in NIC + */ +#define ED_3COM_PSPR 1 + +/* + * Drq Timer Register. Determines number of bytes to be transfered during + * a DMA burst. + */ +#define ED_3COM_DQTR 2 + +/* + * Base Configuration Register. Read-only register which contains the + * board-configured I/O base address of the adapter. Bit encoded. + */ +#define ED_3COM_BCFR 3 + +#define ED_3COM_BCFR_2E0 0x01 +#define ED_3COM_BCFR_2A0 0x02 +#define ED_3COM_BCFR_280 0x04 +#define ED_3COM_BCFR_250 0x08 +#define ED_3COM_BCFR_350 0x10 +#define ED_3COM_BCFR_330 0x20 +#define ED_3COM_BCFR_310 0x40 +#define ED_3COM_BCFR_300 0x80 + +/* + * EPROM Configuration Register. Read-only register which contains the + * board-configured memory base address. Bit encoded. + */ +#define ED_3COM_PCFR 4 + +#define ED_3COM_PCFR_C8000 0x10 +#define ED_3COM_PCFR_CC000 0x20 +#define ED_3COM_PCFR_D8000 0x40 +#define ED_3COM_PCFR_DC000 0x80 + +/* + * GA Configuration Register. Gate-Array Configuration Register. + */ +#define ED_3COM_GACFR 5 + +/* + * mbs2 mbs1 mbs0 start address + * 0 0 0 0x0000 + * 0 0 1 0x2000 + * 0 1 0 0x4000 + * 0 1 1 0x6000 + * + * Note that with adapters with only 8K, the setting for 0x2000 must + * always be used. + */ +#define ED_3COM_GACFR_MBS0 0x01 +#define ED_3COM_GACFR_MBS1 0x02 +#define ED_3COM_GACFR_MBS2 0x04 + +#define ED_3COM_GACFR_RSEL 0x08 /* enable shared memory */ +#define ED_3COM_GACFR_TEST 0x10 /* for GA testing */ +#define ED_3COM_GACFR_OWS 0x20 /* select 0WS access to GA */ +#define ED_3COM_GACFR_TCM 0x40 /* Mask DMA interrupts */ +#define ED_3COM_GACFR_NIM 0x80 /* Mask NIC interrupts */ + +/* + * Control Register. Miscellaneous control functions. + */ +#define ED_3COM_CR 6 + +#define ED_3COM_CR_RST 0x01 /* Reset GA and NIC */ +#define ED_3COM_CR_XSEL 0x02 /* Transceiver select. BNC=1(def) AUI=0 */ +#define ED_3COM_CR_EALO 0x04 /* window EA PROM 0-15 to I/O base */ +#define ED_3COM_CR_EAHI 0x08 /* window EA PROM 16-31 to I/O base */ +#define ED_3COM_CR_SHARE 0x10 /* select interrupt sharing option */ +#define ED_3COM_CR_DBSEL 0x20 /* Double buffer select */ +#define ED_3COM_CR_DDIR 0x40 /* DMA direction select */ +#define ED_3COM_CR_START 0x80 /* Start DMA controller */ + +/* + * Status Register. Miscellaneous status information. + */ +#define ED_3COM_STREG 7 + +#define ED_3COM_STREG_REV 0x07 /* GA revision */ +#define ED_3COM_STREG_DIP 0x08 /* DMA in progress */ +#define ED_3COM_STREG_DTC 0x10 /* DMA terminal count */ +#define ED_3COM_STREG_OFLW 0x20 /* Overflow */ +#define ED_3COM_STREG_UFLW 0x40 /* Underflow */ +#define ED_3COM_STREG_DPRDY 0x80 /* Data port ready */ + +/* + * Interrupt/DMA Configuration Register + */ +#define ED_3COM_IDCFR 8 + +#define ED_3COM_IDCFR_DRQ0 0x01 /* DMA request 1 select */ +#define ED_3COM_IDCFR_DRQ1 0x02 /* DMA request 2 select */ +#define ED_3COM_IDCFR_DRQ2 0x04 /* DMA request 3 select */ +#define ED_3COM_IDCFR_UNUSED 0x08 /* not used */ +#define ED_3COM_IDCFR_IRQ2 0x10 /* Interrupt request 2 select */ +#define ED_3COM_IDCFR_IRQ3 0x20 /* Interrupt request 3 select */ +#define ED_3COM_IDCFR_IRQ4 0x40 /* Interrupt request 4 select */ +#define ED_3COM_IDCFR_IRQ5 0x80 /* Interrupt request 5 select */ + +/* + * DMA Address Register MSB + */ +#define ED_3COM_DAMSB 9 + +/* + * DMA Address Register LSB + */ +#define ED_3COM_DALSB 0x0a + +/* + * Vector Pointer Register 2 + */ +#define ED_3COM_VPTR2 0x0b + +/* + * Vector Pointer Register 1 + */ +#define ED_3COM_VPTR1 0x0c + +/* + * Vector Pointer Register 0 + */ +#define ED_3COM_VPTR0 0x0d + +/* + * Register File Access MSB + */ +#define ED_3COM_RFMSB 0x0e + +/* + * Register File Access LSB + */ +#define ED_3COM_RFLSB 0x0f |