diff options
Diffstat (limited to 'sys/dev/ed/if_ed.c')
| -rw-r--r-- | sys/dev/ed/if_ed.c | 3469 |
1 files changed, 3469 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..5ad04e3 --- /dev/null +++ b/sys/dev/ed/if_ed.c @@ -0,0 +1,3469 @@ +/* + * Copyright (c) 1995, David Greenman + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* + * Device driver for National Semiconductor DS8390/WD83C690 based ethernet + * adapters. By David Greenman, 29-April-1993 + * + * Currently supports the Western Digital/SMC 8003 and 8013 series, + * the SMC Elite Ultra (8216), the 3Com 3c503, the NE1000 and NE2000, + * and a variety of similar clones. + * + */ + +#include "opt_ed.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/sockio.h> +#include <sys/mbuf.h> +#include <sys/kernel.h> +#include <sys/socket.h> +#include <sys/syslog.h> + +#include <sys/bus.h> + +#include <machine/bus.h> +#include <sys/rman.h> +#include <machine/resource.h> + +#include <net/ethernet.h> +#include <net/if.h> +#include <net/if_arp.h> +#include <net/if_dl.h> +#include <net/if_mib.h> +#include <net/if_media.h> + +#ifndef ED_NO_MIIBUS +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> +#endif + +#include <net/bpf.h> +#include <net/bridge.h> + +#include <machine/md_var.h> + +#include <dev/ed/if_edreg.h> +#include <dev/ed/if_edvar.h> + +devclass_t ed_devclass; + +static void ed_init (void *); +static int ed_ioctl (struct ifnet *, u_long, caddr_t); +static void ed_start (struct ifnet *); +static void ed_reset (struct ifnet *); +static void ed_watchdog (struct ifnet *); +#ifndef ED_NO_MIIBUS +static void ed_tick (void *); +#endif + +static void ds_getmcaf (struct ed_softc *, u_int32_t *); + +static void ed_get_packet (struct ed_softc *, char *, /* u_short */ int); + +static __inline void ed_rint (struct ed_softc *); +static __inline void ed_xmit (struct ed_softc *); +static __inline char * ed_ring_copy(struct ed_softc *, char *, char *, + /* u_short */ int); +static void ed_hpp_set_physical_link(struct ed_softc *); +static void ed_hpp_readmem (struct ed_softc *, int, unsigned char *, + /* u_short */ int); +static void ed_hpp_writemem (struct ed_softc *, unsigned char *, + /* u_short */ int, /* u_short */ int); +static u_short ed_hpp_write_mbufs(struct ed_softc *, struct mbuf *, int); + +static u_short ed_pio_write_mbufs(struct ed_softc *, struct mbuf *, int); + +static void ed_setrcr (struct ed_softc *); + +static u_int32_t ds_crc (u_char *ep); + +/* + * Interrupt conversion table for WD/SMC ASIC/83C584 + */ +static unsigned short ed_intr_val[] = { + 9, + 3, + 5, + 7, + 10, + 11, + 15, + 4 +}; + +/* + * Interrupt conversion table for 83C790 + */ +static unsigned short ed_790_intr_val[] = { + 0, + 9, + 3, + 5, + 7, + 10, + 11, + 15 +}; + +/* + * Interrupt conversion table for the HP PC LAN+ + */ + +static unsigned short ed_hpp_intr_val[] = { + 0, /* 0 */ + 0, /* 1 */ + 0, /* 2 */ + 3, /* 3 */ + 4, /* 4 */ + 5, /* 5 */ + 6, /* 6 */ + 7, /* 7 */ + 0, /* 8 */ + 9, /* 9 */ + 10, /* 10 */ + 11, /* 11 */ + 12, /* 12 */ + 0, /* 13 */ + 0, /* 14 */ + 15 /* 15 */ +}; + +/* + * Generic probe routine for testing for the existance of a DS8390. + * Must be called after the NIC has just been reset. This routine + * works by looking at certain register values that are guaranteed + * to be initialized a certain way after power-up or reset. Seems + * not to currently work on the 83C690. + * + * Specifically: + * + * Register reset bits set bits + * Command Register (CR) TXP, STA RD2, STP + * Interrupt Status (ISR) RST + * Interrupt Mask (IMR) All bits + * Data Control (DCR) LAS + * Transmit Config. (TCR) LB1, LB0 + * + * We only look at the CR and ISR registers, however, because looking at + * the others would require changing register pages (which would be + * intrusive if this isn't an 8390). + * + * Return 1 if 8390 was found, 0 if not. + */ + +int +ed_probe_generic8390(sc) + struct ed_softc *sc; +{ + if ((ed_nic_inb(sc, ED_P0_CR) & + (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != + (ED_CR_RD2 | ED_CR_STP)) + return (0); + if ((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST) != ED_ISR_RST) + return (0); + + return (1); +} + +/* + * Probe and vendor-specific initialization routine for SMC/WD80x3 boards + */ +int +ed_probe_WD80x3_generic(dev, flags, intr_vals) + device_t dev; + int flags; + unsigned short *intr_vals[]; +{ + struct ed_softc *sc = device_get_softc(dev); + int error; + int i; + u_int memsize, maddr; + u_char iptr, isa16bit, sum, totalsum; + u_long conf_maddr, conf_msize, irq, junk; + + sc->chip_type = ED_CHIP_TYPE_DP8390; + + if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_TOSH_ETHER) { + totalsum = ED_WD_ROM_CHECKSUM_TOTAL_TOSH_ETHER; + ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_POW); + DELAY(10000); + } + else + totalsum = ED_WD_ROM_CHECKSUM_TOTAL; + + /* + * Attempt to do a checksum over the station address PROM. If it + * fails, it's probably not a SMC/WD board. There is a problem with + * this, though: some clone WD boards don't pass the checksum test. + * Danpex boards for one. + */ + for (sum = 0, i = 0; i < 8; ++i) + sum += ed_asic_inb(sc, ED_WD_PROM + i); + + if (sum != totalsum) { + + /* + * Checksum is invalid. This often happens with cheap WD8003E + * clones. In this case, the checksum byte (the eighth byte) + * seems to always be zero. + */ + if (ed_asic_inb(sc, ED_WD_CARD_ID) != ED_TYPE_WD8003E || + ed_asic_inb(sc, ED_WD_PROM + 7) != 0) + return (ENXIO); + } + /* reset card to force it into a known state. */ + if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_TOSH_ETHER) + ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_RST | ED_WD_MSR_POW); + else + ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_RST); + + DELAY(100); + ed_asic_outb(sc, ED_WD_MSR, ed_asic_inb(sc, ED_WD_MSR) & ~ED_WD_MSR_RST); + /* wait in the case this card is reading its EEROM */ + DELAY(5000); + + sc->vendor = ED_VENDOR_WD_SMC; + sc->type = ed_asic_inb(sc, ED_WD_CARD_ID); + + /* + * Set initial values for width/size. + */ + memsize = 8192; + isa16bit = 0; + switch (sc->type) { + case ED_TYPE_WD8003S: + sc->type_str = "WD8003S"; + break; + case ED_TYPE_WD8003E: + sc->type_str = "WD8003E"; + break; + case ED_TYPE_WD8003EB: + sc->type_str = "WD8003EB"; + break; + case ED_TYPE_WD8003W: + sc->type_str = "WD8003W"; + break; + case ED_TYPE_WD8013EBT: + sc->type_str = "WD8013EBT"; + memsize = 16384; + isa16bit = 1; + break; + case ED_TYPE_WD8013W: + sc->type_str = "WD8013W"; + memsize = 16384; + isa16bit = 1; + break; + case ED_TYPE_WD8013EP: /* also WD8003EP */ + if (ed_asic_inb(sc, ED_WD_ICR) & ED_WD_ICR_16BIT) { + isa16bit = 1; + memsize = 16384; + sc->type_str = "WD8013EP"; + } else { + sc->type_str = "WD8003EP"; + } + break; + case ED_TYPE_WD8013WC: + sc->type_str = "WD8013WC"; + memsize = 16384; + isa16bit = 1; + break; + case ED_TYPE_WD8013EBP: + sc->type_str = "WD8013EBP"; + memsize = 16384; + isa16bit = 1; + break; + case ED_TYPE_WD8013EPC: + sc->type_str = "WD8013EPC"; + memsize = 16384; + isa16bit = 1; + break; + case ED_TYPE_SMC8216C: /* 8216 has 16K shared mem -- 8416 has 8K */ + case ED_TYPE_SMC8216T: + if (sc->type == ED_TYPE_SMC8216C) { + sc->type_str = "SMC8216/SMC8216C"; + } else { + sc->type_str = "SMC8216T"; + } + + ed_asic_outb(sc, ED_WD790_HWR, + ed_asic_inb(sc, ED_WD790_HWR) | ED_WD790_HWR_SWH); + switch (ed_asic_inb(sc, ED_WD790_RAR) & ED_WD790_RAR_SZ64) { + case ED_WD790_RAR_SZ64: + memsize = 65536; + break; + case ED_WD790_RAR_SZ32: + memsize = 32768; + break; + case ED_WD790_RAR_SZ16: + memsize = 16384; + break; + case ED_WD790_RAR_SZ8: + /* 8216 has 16K shared mem -- 8416 has 8K */ + if (sc->type == ED_TYPE_SMC8216C) { + sc->type_str = "SMC8416C/SMC8416BT"; + } else { + sc->type_str = "SMC8416T"; + } + memsize = 8192; + break; + } + ed_asic_outb(sc, ED_WD790_HWR, + ed_asic_inb(sc, ED_WD790_HWR) & ~ED_WD790_HWR_SWH); + + isa16bit = 1; + sc->chip_type = ED_CHIP_TYPE_WD790; + break; + case ED_TYPE_TOSHIBA1: + sc->type_str = "Toshiba1"; + memsize = 32768; + isa16bit = 1; + break; + case ED_TYPE_TOSHIBA4: + sc->type_str = "Toshiba4"; + memsize = 32768; + isa16bit = 1; + break; + default: + sc->type_str = ""; + break; + } + + /* + * Make some adjustments to initial values depending on what is found + * in the ICR. + */ + if (isa16bit && (sc->type != ED_TYPE_WD8013EBT) + && (sc->type != ED_TYPE_TOSHIBA1) && (sc->type != ED_TYPE_TOSHIBA4) + && ((ed_asic_inb(sc, ED_WD_ICR) & ED_WD_ICR_16BIT) == 0)) { + isa16bit = 0; + memsize = 8192; + } + + error = bus_get_resource(dev, SYS_RES_MEMORY, 0, + &conf_maddr, &conf_msize); + if (error) + return (error); + +#if ED_DEBUG + printf("type = %x type_str=%s isa16bit=%d memsize=%d id_msize=%d\n", + sc->type, sc->type_str, isa16bit, memsize, conf_msize); + for (i = 0; i < 8; i++) + printf("%x -> %x\n", i, ed_asic_inb(sc, i)); +#endif + + /* + * Allow the user to override the autoconfiguration + */ + if (conf_msize > 1) + memsize = conf_msize; + + maddr = conf_maddr; + if (maddr < 0xa0000 || maddr + memsize > 0x1000000) { + device_printf(dev, "Invalid ISA memory address range configured: 0x%x - 0x%x\n", + maddr, maddr + memsize); + return (ENXIO); + } + + /* + * (note that if the user specifies both of the following flags that + * '8bit' mode intentionally has precedence) + */ + if (flags & ED_FLAGS_FORCE_16BIT_MODE) + isa16bit = 1; + if (flags & ED_FLAGS_FORCE_8BIT_MODE) + isa16bit = 0; + + /* + * If possible, get the assigned interrupt number from the card and + * use it. + */ + if ((sc->type & ED_WD_SOFTCONFIG) && + (sc->chip_type != ED_CHIP_TYPE_WD790)) { + + /* + * Assemble together the encoded interrupt number. + */ + iptr = (ed_asic_inb(sc, ED_WD_ICR) & ED_WD_ICR_IR2) | + ((ed_asic_inb(sc, ED_WD_IRR) & + (ED_WD_IRR_IR0 | ED_WD_IRR_IR1)) >> 5); + + /* + * If no interrupt specified (or "?"), use what the board tells us. + */ + error = bus_get_resource(dev, SYS_RES_IRQ, 0, + &irq, &junk); + if (error && intr_vals[0] != NULL) { + error = bus_set_resource(dev, SYS_RES_IRQ, 0, + intr_vals[0][iptr], 1); + } + if (error) + return (error); + + /* + * Enable the interrupt. + */ + ed_asic_outb(sc, ED_WD_IRR, + ed_asic_inb(sc, ED_WD_IRR) | ED_WD_IRR_IEN); + } + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + ed_asic_outb(sc, ED_WD790_HWR, + ed_asic_inb(sc, ED_WD790_HWR) | ED_WD790_HWR_SWH); + iptr = (((ed_asic_inb(sc, ED_WD790_GCR) & ED_WD790_GCR_IR2) >> 4) | + (ed_asic_inb(sc, ED_WD790_GCR) & + (ED_WD790_GCR_IR1 | ED_WD790_GCR_IR0)) >> 2); + ed_asic_outb(sc, ED_WD790_HWR, + ed_asic_inb(sc, ED_WD790_HWR) & ~ED_WD790_HWR_SWH); + + /* + * If no interrupt specified (or "?"), use what the board tells us. + */ + error = bus_get_resource(dev, SYS_RES_IRQ, 0, + &irq, &junk); + if (error && intr_vals[1] != NULL) { + error = bus_set_resource(dev, SYS_RES_IRQ, 0, + intr_vals[1][iptr], 1); + } + if (error) + return (error); + + /* + * Enable interrupts. + */ + ed_asic_outb(sc, ED_WD790_ICR, + ed_asic_inb(sc, ED_WD790_ICR) | ED_WD790_ICR_EIL); + } + error = bus_get_resource(dev, SYS_RES_IRQ, 0, + &irq, &junk); + if (error) { + device_printf(dev, "%s cards don't support auto-detected/assigned interrupts.\n", + sc->type_str); + return (ENXIO); + } + sc->isa16bit = isa16bit; + sc->mem_shared = 1; + + error = ed_alloc_memory(dev, 0, memsize); + if (error) { + printf("*** ed_alloc_memory() failed! (%d)\n", error); + return (error); + } + sc->mem_start = (caddr_t) rman_get_virtual(sc->mem_res); + + /* + * allocate one xmit buffer if < 16k, two buffers otherwise + */ + if ((memsize < 16384) || + (flags & ED_FLAGS_NO_MULTI_BUFFERING)) { + sc->txb_cnt = 1; + } else { + sc->txb_cnt = 2; + } + sc->tx_page_start = ED_WD_PAGE_OFFSET; + sc->rec_page_start = ED_WD_PAGE_OFFSET + ED_TXBUF_SIZE * sc->txb_cnt; + sc->rec_page_stop = ED_WD_PAGE_OFFSET + memsize / ED_PAGE_SIZE; + sc->mem_ring = sc->mem_start + (ED_PAGE_SIZE * sc->rec_page_start); + sc->mem_size = memsize; + sc->mem_end = sc->mem_start + memsize; + + /* + * Get station address from on-board ROM + */ + for (i = 0; i < ETHER_ADDR_LEN; ++i) + sc->arpcom.ac_enaddr[i] = ed_asic_inb(sc, ED_WD_PROM + i); + + /* + * Set upper address bits and 8/16 bit access to shared memory. + */ + if (isa16bit) { + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + sc->wd_laar_proto = ed_asic_inb(sc, ED_WD_LAAR); + } else { + sc->wd_laar_proto = ED_WD_LAAR_L16EN | + ((kvtop(sc->mem_start) >> 19) & ED_WD_LAAR_ADDRHI); + } + /* + * Enable 16bit access + */ + ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto | + ED_WD_LAAR_M16EN); + } else { + if (((sc->type & ED_WD_SOFTCONFIG) || + (sc->type == ED_TYPE_TOSHIBA1) || + (sc->type == ED_TYPE_TOSHIBA4) || + (sc->type == ED_TYPE_WD8013EBT)) && + (sc->chip_type != ED_CHIP_TYPE_WD790)) { + sc->wd_laar_proto = (kvtop(sc->mem_start) >> 19) & + ED_WD_LAAR_ADDRHI; + ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto); + } + } + + /* + * Set address and enable interface shared memory. + */ + if (sc->chip_type != ED_CHIP_TYPE_WD790) { + if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_TOSH_ETHER) { + ed_asic_outb(sc, ED_WD_MSR + 1, + ((kvtop(sc->mem_start) >> 8) & 0xe0) | 4); + ed_asic_outb(sc, ED_WD_MSR + 2, + ((kvtop(sc->mem_start) >> 16) & 0x0f)); + ed_asic_outb(sc, ED_WD_MSR, + ED_WD_MSR_MENB | ED_WD_MSR_POW); + } else { + ed_asic_outb(sc, ED_WD_MSR, + ((kvtop(sc->mem_start) >> 13) & + ED_WD_MSR_ADDR) | ED_WD_MSR_MENB); + } + sc->cr_proto = ED_CR_RD2; + } else { + ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB); + ed_asic_outb(sc, ED_WD790_HWR, (ed_asic_inb(sc, ED_WD790_HWR) | ED_WD790_HWR_SWH)); + ed_asic_outb(sc, ED_WD790_RAR, ((kvtop(sc->mem_start) >> 13) & 0x0f) | + ((kvtop(sc->mem_start) >> 11) & 0x40) | + (ed_asic_inb(sc, ED_WD790_RAR) & 0xb0)); + ed_asic_outb(sc, ED_WD790_HWR, (ed_asic_inb(sc, ED_WD790_HWR) & ~ED_WD790_HWR_SWH)); + sc->cr_proto = 0; + } + +#if 0 + printf("starting memory performance test at 0x%x, size %d...\n", + sc->mem_start, memsize*16384); + for (i = 0; i < 16384; i++) + bzero(sc->mem_start, memsize); + printf("***DONE***\n"); +#endif + + /* + * Now zero memory and verify that it is clear + */ + bzero(sc->mem_start, memsize); + + for (i = 0; i < memsize; ++i) { + if (sc->mem_start[i]) { + device_printf(dev, "failed to clear shared memory at %lx - check configuration\n", + kvtop(sc->mem_start + i)); + + /* + * Disable 16 bit access to shared memory + */ + if (isa16bit) { + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + ed_asic_outb(sc, ED_WD_MSR, 0x00); + } + ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto & + ~ED_WD_LAAR_M16EN); + } + return (ENXIO); + } + } + + /* + * 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 (isa16bit) { + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + ed_asic_outb(sc, ED_WD_MSR, 0x00); + } + ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto & + ~ED_WD_LAAR_M16EN); + } + return (0); +} + +int +ed_probe_WD80x3(dev, port_rid, flags) + device_t dev; + int port_rid; + int flags; +{ + struct ed_softc *sc = device_get_softc(dev); + int error; + static unsigned short *intr_vals[] = {ed_intr_val, ed_790_intr_val}; + + error = ed_alloc_port(dev, port_rid, ED_WD_IO_PORTS); + if (error) + return (error); + + sc->asic_offset = ED_WD_ASIC_OFFSET; + sc->nic_offset = ED_WD_NIC_OFFSET; + + return ed_probe_WD80x3_generic(dev, flags, intr_vals); +} + +/* + * Probe and vendor-specific initialization routine for 3Com 3c503 boards + */ +int +ed_probe_3Com(dev, port_rid, flags) + device_t dev; + int port_rid; + int flags; +{ + struct ed_softc *sc = device_get_softc(dev); + int error; + int i; + u_int memsize; + u_char isa16bit; + u_long conf_maddr, conf_msize, irq, junk; + + error = ed_alloc_port(dev, 0, ED_3COM_IO_PORTS); + if (error) + return (error); + + sc->asic_offset = ED_3COM_ASIC_OFFSET; + sc->nic_offset = ED_3COM_NIC_OFFSET; + + /* + * Verify that the kernel configured I/O address matches the board + * configured address + */ + switch (ed_asic_inb(sc, ED_3COM_BCFR)) { + case ED_3COM_BCFR_300: + if (rman_get_start(sc->port_res) != 0x300) + return (ENXIO); + break; + case ED_3COM_BCFR_310: + if (rman_get_start(sc->port_res) != 0x310) + return (ENXIO); + break; + case ED_3COM_BCFR_330: + if (rman_get_start(sc->port_res) != 0x330) + return (ENXIO); + break; + case ED_3COM_BCFR_350: + if (rman_get_start(sc->port_res) != 0x350) + return (ENXIO); + break; + case ED_3COM_BCFR_250: + if (rman_get_start(sc->port_res) != 0x250) + return (ENXIO); + break; + case ED_3COM_BCFR_280: + if (rman_get_start(sc->port_res) != 0x280) + return (ENXIO); + break; + case ED_3COM_BCFR_2A0: + if (rman_get_start(sc->port_res) != 0x2a0) + return (ENXIO); + break; + case ED_3COM_BCFR_2E0: + if (rman_get_start(sc->port_res) != 0x2e0) + return (ENXIO); + break; + default: + return (ENXIO); + } + + error = bus_get_resource(dev, SYS_RES_MEMORY, 0, + &conf_maddr, &conf_msize); + if (error) + return (error); + + /* + * Verify that the kernel shared memory address matches the board + * configured address. + */ + switch (ed_asic_inb(sc, ED_3COM_PCFR)) { + case ED_3COM_PCFR_DC000: + if (conf_maddr != 0xdc000) + return (ENXIO); + break; + case ED_3COM_PCFR_D8000: + if (conf_maddr != 0xd8000) + return (ENXIO); + break; + case ED_3COM_PCFR_CC000: + if (conf_maddr != 0xcc000) + return (ENXIO); + break; + case ED_3COM_PCFR_C8000: + if (conf_maddr != 0xc8000) + return (ENXIO); + break; + default: + return (ENXIO); + } + + + /* + * Reset NIC and ASIC. Enable on-board transceiver throughout reset + * sequence because it'll lock up if the cable isn't connected if we + * don't. + */ + ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_RST | ED_3COM_CR_XSEL); + + /* + * Wait for a while, then un-reset it + */ + DELAY(50); + + /* + * The 3Com ASIC defaults to rather strange settings for the CR after + * a reset - it's important to set it again after the following outb + * (this is done when we map the PROM below). + */ + ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); + + /* + * Wait a bit for the NIC to recover from the reset + */ + DELAY(5000); + + sc->vendor = ED_VENDOR_3COM; + sc->type_str = "3c503"; + sc->mem_shared = 1; + sc->cr_proto = ED_CR_RD2; + + /* + * Hmmm...a 16bit 3Com board has 16k of memory, but only an 8k window + * to it. + */ + memsize = 8192; + + /* + * Get station address from on-board ROM + */ + + /* + * First, map ethernet address PROM over the top of where the NIC + * registers normally appear. + */ + ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_EALO | ED_3COM_CR_XSEL); + + for (i = 0; i < ETHER_ADDR_LEN; ++i) + sc->arpcom.ac_enaddr[i] = ed_nic_inb(sc, i); + + /* + * Unmap PROM - select NIC registers. The proper setting of the + * tranceiver is set in ed_init so that the attach code is given a + * chance to set the default based on a compile-time config option + */ + ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); + + /* + * Determine if this is an 8bit or 16bit board + */ + + /* + * select page 0 registers + */ + ed_nic_outb(sc, 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. + */ + ed_nic_outb(sc, ED_P0_DCR, 0); + + /* + * select page 2 registers + */ + ed_nic_outb(sc, 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 (ed_nic_inb(sc, ED_P2_DCR) & ED_DCR_WTS) + isa16bit = 1; + else + isa16bit = 0; + + /* + * select page 0 registers + */ + ed_nic_outb(sc, ED_P2_CR, ED_CR_RD2 | ED_CR_STP); + + error = ed_alloc_memory(dev, 0, memsize); + if (error) + return (error); + + sc->mem_start = (caddr_t) rman_get_virtual(sc->mem_res); + sc->mem_size = memsize; + sc->mem_end = sc->mem_start + memsize; + + /* + * We have an entire 8k window to put the transmit buffers on the + * 16bit boards. But since the 16bit 3c503's shared memory is only + * fast enough to overlap the loading of one full-size packet, trying + * to load more than 2 buffers can actually leave the transmitter idle + * during the load. So 2 seems the best value. (Although a mix of + * variable-sized packets might change this assumption. Nonetheless, + * we optimize for linear transfers of same-size packets.) + */ + if (isa16bit) { + if (flags & ED_FLAGS_NO_MULTI_BUFFERING) + sc->txb_cnt = 1; + else + sc->txb_cnt = 2; + + sc->tx_page_start = ED_3COM_TX_PAGE_OFFSET_16BIT; + sc->rec_page_start = ED_3COM_RX_PAGE_OFFSET_16BIT; + sc->rec_page_stop = memsize / ED_PAGE_SIZE + + ED_3COM_RX_PAGE_OFFSET_16BIT; + sc->mem_ring = sc->mem_start; + } else { + sc->txb_cnt = 1; + sc->tx_page_start = ED_3COM_TX_PAGE_OFFSET_8BIT; + sc->rec_page_start = ED_TXBUF_SIZE + ED_3COM_TX_PAGE_OFFSET_8BIT; + sc->rec_page_stop = memsize / ED_PAGE_SIZE + + ED_3COM_TX_PAGE_OFFSET_8BIT; + sc->mem_ring = sc->mem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE); + } + + sc->isa16bit = isa16bit; + + /* + * Initialize GA page start/stop registers. Probably only needed if + * doing DMA, but what the hell. + */ + ed_asic_outb(sc, ED_3COM_PSTR, sc->rec_page_start); + ed_asic_outb(sc, ED_3COM_PSPR, sc->rec_page_stop); + + /* + * Set IRQ. 3c503 only allows a choice of irq 2-5. + */ + error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk); + if (error) + return (error); + + switch (irq) { + case 2: + case 9: + ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ2); + break; + case 3: + ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ3); + break; + case 4: + ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ4); + break; + case 5: + ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ5); + break; + default: + device_printf(dev, "Invalid irq configuration (%ld) must be 3-5,9 for 3c503\n", + irq); + return (ENXIO); + } + + /* + * Initialize GA configuration register. Set bank and enable shared + * mem. + */ + ed_asic_outb(sc, 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. + */ + ed_asic_outb(sc, ED_3COM_VPTR2, 0xff); + ed_asic_outb(sc, ED_3COM_VPTR1, 0xff); + ed_asic_outb(sc, ED_3COM_VPTR0, 0x00); + + /* + * Zero memory and verify that it is clear + */ + bzero(sc->mem_start, memsize); + + for (i = 0; i < memsize; ++i) + if (sc->mem_start[i]) { + device_printf(dev, "failed to clear shared memory at %lx - check configuration\n", + kvtop(sc->mem_start + i)); + return (ENXIO); + } + return (0); +} + +/* + * Probe and vendor-specific initialization routine for NE1000/2000 boards + */ +int +ed_probe_Novell_generic(dev, flags) + device_t dev; + int flags; +{ + struct ed_softc *sc = device_get_softc(dev); + u_int memsize, n; + u_char romdata[16], tmp; + static char test_pattern[32] = "THIS is A memory TEST pattern"; + char test_buffer[32]; + + /* XXX - do Novell-specific probe here */ + + /* Reset the board */ + if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) { + ed_asic_outb(sc, ED_NOVELL_RESET, 0); + DELAY(200); + } + tmp = ed_asic_inb(sc, ED_NOVELL_RESET); + + /* + * I don't know if this is necessary; probably cruft leftover from + * Clarkson packet driver code. Doesn't do a thing on the boards I've + * tested. -DG [note that a outb(0x84, 0) seems to work here, and is + * non-invasive...but some boards don't seem to reset and I don't have + * complete documentation on what the 'right' thing to do is...so we + * do the invasive thing for now. Yuck.] + */ + ed_asic_outb(sc, ED_NOVELL_RESET, tmp); + DELAY(5000); + + /* + * This is needed because some NE clones apparently don't reset the + * NIC properly (or the NIC chip doesn't reset fully on power-up) XXX + * - this makes the probe invasive! ...Done against my better + * judgement. -DLG + */ + ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STP); + + DELAY(5000); + + /* Make sure that we really have an 8390 based board */ + if (!ed_probe_generic8390(sc)) + return (ENXIO); + + sc->vendor = ED_VENDOR_NOVELL; + sc->mem_shared = 0; + sc->cr_proto = ED_CR_RD2; + + /* + * Test the ability to read and write to the NIC memory. This has the + * side affect of determining if this is an NE1000 or an NE2000. + */ + + /* + * This prevents packets from being stored in the NIC memory when the + * readmem routine turns on the start bit in the CR. + */ + ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON); + + /* Temporarily initialize DCR for byte operations */ + ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); + + ed_nic_outb(sc, ED_P0_PSTART, 8192 / ED_PAGE_SIZE); + ed_nic_outb(sc, ED_P0_PSTOP, 16384 / ED_PAGE_SIZE); + + sc->isa16bit = 0; + + /* + * Write a test pattern in byte mode. If this fails, then there + * probably isn't any memory at 8k - which likely means that the board + * is an NE2000. + */ + ed_pio_writemem(sc, test_pattern, 8192, sizeof(test_pattern)); + ed_pio_readmem(sc, 8192, test_buffer, sizeof(test_pattern)); + + if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) { + sc->type = ED_TYPE_NE1000; + sc->type_str = "NE1000"; + } else { + + /* neither an NE1000 nor a Linksys - try NE2000 */ + ed_nic_outb(sc, ED_P0_DCR, ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS); + ed_nic_outb(sc, ED_P0_PSTART, 16384 / ED_PAGE_SIZE); + ed_nic_outb(sc, ED_P0_PSTOP, 32768 / ED_PAGE_SIZE); + + sc->isa16bit = 1; + + /* + * Write a test pattern in word mode. If this also fails, then + * we don't know what this board is. + */ + ed_pio_writemem(sc, test_pattern, 16384, sizeof(test_pattern)); + ed_pio_readmem(sc, 16384, test_buffer, sizeof(test_pattern)); + if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) { + sc->type = ED_TYPE_NE2000; + sc->type_str = "NE2000"; + } else { + return (ENXIO); + } + } + + + /* 8k of memory plus an additional 8k if 16bit */ + memsize = 8192 + sc->isa16bit * 8192; + +#if 0 /* probably not useful - NE boards only come two ways */ + /* allow kernel config file overrides */ + if (isa_dev->id_msize) + memsize = isa_dev->id_msize; +#endif + + sc->mem_size = memsize; + + /* NIC memory doesn't start at zero on an NE board */ + /* The start address is tied to the bus width */ + sc->mem_start = (char *) 8192 + sc->isa16bit * 8192; + sc->mem_end = sc->mem_start + memsize; + sc->tx_page_start = memsize / ED_PAGE_SIZE; + + if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) { + int x, i, mstart = 0, msize = 0; + char pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], tbuf[ED_PAGE_SIZE]; + + for (i = 0; i < ED_PAGE_SIZE; i++) + pbuf0[i] = 0; + + /* Clear all the memory. */ + for (x = 1; x < 256; x++) + ed_pio_writemem(sc, pbuf0, x * 256, ED_PAGE_SIZE); + + /* Search for the start of RAM. */ + for (x = 1; x < 256; x++) { + ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); + if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { + for (i = 0; i < ED_PAGE_SIZE; i++) + pbuf[i] = 255 - x; + ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE); + ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); + if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { + mstart = x * ED_PAGE_SIZE; + msize = ED_PAGE_SIZE; + break; + } + } + } + + if (mstart == 0) { + device_printf(dev, "Cannot find start of RAM.\n"); + return (ENXIO); + } + /* Search for the start of RAM. */ + for (x = (mstart / ED_PAGE_SIZE) + 1; x < 256; x++) { + ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); + if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { + for (i = 0; i < ED_PAGE_SIZE; i++) + pbuf[i] = 255 - x; + ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE); + ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); + if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) + msize += ED_PAGE_SIZE; + else { + break; + } + } else { + break; + } + } + + if (msize == 0) { + device_printf(dev, "Cannot find any RAM, start : %d, x = %d.\n", mstart, x); + return (ENXIO); + } + device_printf(dev, "RAM start at %d, size : %d.\n", mstart, msize); + + sc->mem_size = msize; + sc->mem_start = (caddr_t) mstart; + sc->mem_end = (caddr_t) (msize + mstart); + sc->tx_page_start = mstart / ED_PAGE_SIZE; + } + + /* + * Use one xmit buffer if < 16k, two buffers otherwise (if not told + * otherwise). + */ + if ((memsize < 16384) || (flags & ED_FLAGS_NO_MULTI_BUFFERING)) + sc->txb_cnt = 1; + else + sc->txb_cnt = 2; + + sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; + sc->rec_page_stop = sc->tx_page_start + memsize / ED_PAGE_SIZE; + + sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE; + + ed_pio_readmem(sc, 0, romdata, 16); + for (n = 0; n < ETHER_ADDR_LEN; n++) + sc->arpcom.ac_enaddr[n] = romdata[n * (sc->isa16bit + 1)]; + + if ((ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) && + (sc->arpcom.ac_enaddr[2] == 0x86)) { + sc->type_str = "Gateway AT"; + } + + /* clear any pending interrupts that might have occurred above */ + ed_nic_outb(sc, ED_P0_ISR, 0xff); + + return (0); +} + +int +ed_probe_Novell(dev, port_rid, flags) + device_t dev; + int port_rid; + int flags; +{ + struct ed_softc *sc = device_get_softc(dev); + int error; + + error = ed_alloc_port(dev, port_rid, ED_NOVELL_IO_PORTS); + if (error) + return (error); + + sc->asic_offset = ED_NOVELL_ASIC_OFFSET; + sc->nic_offset = ED_NOVELL_NIC_OFFSET; + + return ed_probe_Novell_generic(dev, flags); +} + +#define ED_HPP_TEST_SIZE 16 + +/* + * Probe and vendor specific initialization for the HP PC Lan+ Cards. + * (HP Part nos: 27247B and 27252A). + * + * The card has an asic wrapper around a DS8390 core. The asic handles + * host accesses and offers both standard register IO and memory mapped + * IO. Memory mapped I/O allows better performance at the expense of greater + * chance of an incompatibility with existing ISA cards. + * + * The card has a few caveats: it isn't tolerant of byte wide accesses, only + * short (16 bit) or word (32 bit) accesses are allowed. Some card revisions + * don't allow 32 bit accesses; these are indicated by a bit in the software + * ID register (see if_edreg.h). + * + * Other caveats are: we should read the MAC address only when the card + * is inactive. + * + * For more information; please consult the CRYNWR packet driver. + * + * The AUI port is turned on using the "link2" option on the ifconfig + * command line. + */ +int +ed_probe_HP_pclanp(dev, port_rid, flags) + device_t dev; + int port_rid; + int flags; +{ + struct ed_softc *sc = device_get_softc(dev); + int error; + int n; /* temp var */ + int memsize; /* mem on board */ + u_char checksum; /* checksum of board address */ + u_char irq; /* board configured IRQ */ + char test_pattern[ED_HPP_TEST_SIZE]; /* read/write areas for */ + char test_buffer[ED_HPP_TEST_SIZE]; /* probing card */ + u_long conf_maddr, conf_msize, conf_irq, junk; + + error = ed_alloc_port(dev, 0, ED_HPP_IO_PORTS); + if (error) + return (error); + + /* Fill in basic information */ + sc->asic_offset = ED_HPP_ASIC_OFFSET; + sc->nic_offset = ED_HPP_NIC_OFFSET; + + sc->chip_type = ED_CHIP_TYPE_DP8390; + sc->isa16bit = 0; /* the 8390 core needs to be in byte mode */ + + /* + * Look for the HP PCLAN+ signature: "0x50,0x48,0x00,0x53" + */ + + if ((ed_asic_inb(sc, ED_HPP_ID) != 0x50) || + (ed_asic_inb(sc, ED_HPP_ID + 1) != 0x48) || + ((ed_asic_inb(sc, ED_HPP_ID + 2) & 0xF0) != 0) || + (ed_asic_inb(sc, ED_HPP_ID + 3) != 0x53)) + return ENXIO; + + /* + * Read the MAC address and verify checksum on the address. + */ + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_MAC); + for (n = 0, checksum = 0; n < ETHER_ADDR_LEN; n++) + checksum += (sc->arpcom.ac_enaddr[n] = + ed_asic_inb(sc, ED_HPP_MAC_ADDR + n)); + + checksum += ed_asic_inb(sc, ED_HPP_MAC_ADDR + ETHER_ADDR_LEN); + + if (checksum != 0xFF) + return ENXIO; + + /* + * Verify that the software model number is 0. + */ + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_ID); + if (((sc->hpp_id = ed_asic_inw(sc, ED_HPP_PAGE_4)) & + ED_HPP_ID_SOFT_MODEL_MASK) != 0x0000) + return ENXIO; + + /* + * Read in and save the current options configured on card. + */ + + sc->hpp_options = ed_asic_inw(sc, ED_HPP_OPTION); + + sc->hpp_options |= (ED_HPP_OPTION_NIC_RESET | + ED_HPP_OPTION_CHIP_RESET | + ED_HPP_OPTION_ENABLE_IRQ); + + /* + * Reset the chip. This requires writing to the option register + * so take care to preserve the other bits. + */ + + ed_asic_outw(sc, ED_HPP_OPTION, + (sc->hpp_options & ~(ED_HPP_OPTION_NIC_RESET | + ED_HPP_OPTION_CHIP_RESET))); + + DELAY(5000); /* wait for chip reset to complete */ + + ed_asic_outw(sc, ED_HPP_OPTION, + (sc->hpp_options | (ED_HPP_OPTION_NIC_RESET | + ED_HPP_OPTION_CHIP_RESET | + ED_HPP_OPTION_ENABLE_IRQ))); + + DELAY(5000); + + if (!(ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST)) + return ENXIO; /* reset did not complete */ + + /* + * Read out configuration information. + */ + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW); + + irq = ed_asic_inb(sc, ED_HPP_HW_IRQ); + + /* + * Check for impossible IRQ. + */ + + if (irq >= (sizeof(ed_hpp_intr_val) / sizeof(ed_hpp_intr_val[0]))) + return ENXIO; + + /* + * If the kernel IRQ was specified with a '?' use the cards idea + * of the IRQ. If the kernel IRQ was explicitly specified, it + * should match that of the hardware. + */ + error = bus_get_resource(dev, SYS_RES_IRQ, 0, + &conf_irq, &junk); + if (error) { + bus_set_resource(dev, SYS_RES_IRQ, 0, + ed_hpp_intr_val[irq], 1); + } else { + if (conf_irq != ed_hpp_intr_val[irq]) + return (ENXIO); + } + + /* + * Fill in softconfig info. + */ + + sc->vendor = ED_VENDOR_HP; + sc->type = ED_TYPE_HP_PCLANPLUS; + sc->type_str = "HP-PCLAN+"; + + sc->mem_shared = 0; /* we DON'T have dual ported RAM */ + sc->mem_start = 0; /* we use offsets inside the card RAM */ + + sc->hpp_mem_start = NULL;/* no memory mapped I/O by default */ + + /* + * The board has 32KB of memory. Is there a way to determine + * this programmatically? + */ + + memsize = 32768; + + /* + * Check if memory mapping of the I/O registers possible. + */ + + if (sc->hpp_options & ED_HPP_OPTION_MEM_ENABLE) + { + u_long mem_addr; + + /* + * determine the memory address from the board. + */ + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW); + mem_addr = (ed_asic_inw(sc, ED_HPP_HW_MEM_MAP) << 8); + + /* + * Check that the kernel specified start of memory and + * hardware's idea of it match. + */ + error = bus_get_resource(dev, SYS_RES_MEMORY, 0, + &conf_maddr, &conf_msize); + if (error) + return (error); + + if (mem_addr != conf_maddr) + return ENXIO; + + error = ed_alloc_memory(dev, 0, memsize); + if (error) + return (error); + + sc->hpp_mem_start = rman_get_virtual(sc->mem_res); + } + + /* + * Fill in the rest of the soft config structure. + */ + + /* + * The transmit page index. + */ + + sc->tx_page_start = ED_HPP_TX_PAGE_OFFSET; + + if (device_get_flags(dev) & ED_FLAGS_NO_MULTI_BUFFERING) + sc->txb_cnt = 1; + else + sc->txb_cnt = 2; + + /* + * Memory description + */ + + sc->mem_size = memsize; + sc->mem_ring = sc->mem_start + + (sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE); + sc->mem_end = sc->mem_start + sc->mem_size; + + /* + * Receive area starts after the transmit area and + * continues till the end of memory. + */ + + sc->rec_page_start = sc->tx_page_start + + (sc->txb_cnt * ED_TXBUF_SIZE); + sc->rec_page_stop = (sc->mem_size / ED_PAGE_SIZE); + + + sc->cr_proto = 0; /* value works */ + + /* + * Set the wrap registers for string I/O reads. + */ + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW); + ed_asic_outw(sc, ED_HPP_HW_WRAP, + ((sc->rec_page_start / ED_PAGE_SIZE) | + (((sc->rec_page_stop / ED_PAGE_SIZE) - 1) << 8))); + + /* + * Reset the register page to normal operation. + */ + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_PERF); + + /* + * Verify that we can read/write from adapter memory. + * Create test pattern. + */ + + for (n = 0; n < ED_HPP_TEST_SIZE; n++) + { + test_pattern[n] = (n*n) ^ ~n; + } + +#undef ED_HPP_TEST_SIZE + + /* + * Check that the memory is accessible thru the I/O ports. + * Write out the contents of "test_pattern", read back + * into "test_buffer" and compare the two for any + * mismatch. + */ + + for (n = 0; n < (32768 / ED_PAGE_SIZE); n ++) { + + ed_hpp_writemem(sc, test_pattern, (n * ED_PAGE_SIZE), + sizeof(test_pattern)); + ed_hpp_readmem(sc, (n * ED_PAGE_SIZE), + test_buffer, sizeof(test_pattern)); + + if (bcmp(test_pattern, test_buffer, + sizeof(test_pattern))) + return ENXIO; + } + + return (0); + +} + +/* + * HP PC Lan+ : Set the physical link to use AUI or TP/TL. + */ + +static void +ed_hpp_set_physical_link(struct ed_softc *sc) +{ + struct ifnet *ifp = &sc->arpcom.ac_if; + int lan_page; + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN); + lan_page = ed_asic_inw(sc, ED_HPP_PAGE_0); + + if (ifp->if_flags & IFF_ALTPHYS) { + + /* + * Use the AUI port. + */ + + lan_page |= ED_HPP_LAN_AUI; + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN); + ed_asic_outw(sc, ED_HPP_PAGE_0, lan_page); + + + } else { + + /* + * Use the ThinLan interface + */ + + lan_page &= ~ED_HPP_LAN_AUI; + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN); + ed_asic_outw(sc, ED_HPP_PAGE_0, lan_page); + + } + + /* + * Wait for the lan card to re-initialize itself + */ + + DELAY(150000); /* wait 150 ms */ + + /* + * Restore normal pages. + */ + + ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_PERF); + +} + +/* + * Allocate a port resource with the given resource id. + */ +int +ed_alloc_port(dev, rid, size) + device_t dev; + int rid; + int size; +{ + struct ed_softc *sc = device_get_softc(dev); + struct resource *res; + + res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, + 0ul, ~0ul, size, RF_ACTIVE); + if (res) { + sc->port_rid = rid; + sc->port_res = res; + sc->port_used = size; + return (0); + } else { + return (ENOENT); + } +} + +/* + * Allocate a memory resource with the given resource id. + */ +int +ed_alloc_memory(dev, rid, size) + device_t dev; + int rid; + int size; +{ + struct ed_softc *sc = device_get_softc(dev); + struct resource *res; + + res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, + 0ul, ~0ul, size, RF_ACTIVE); + if (res) { + sc->mem_rid = rid; + sc->mem_res = res; + sc->mem_used = size; + return (0); + } else { + return (ENOENT); + } +} + +/* + * Allocate an irq resource with the given resource id. + */ +int +ed_alloc_irq(dev, rid, flags) + device_t dev; + int rid; + int flags; +{ + struct ed_softc *sc = device_get_softc(dev); + struct resource *res; + + res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, + 0ul, ~0ul, 1, (RF_ACTIVE | flags)); + if (res) { + sc->irq_rid = rid; + sc->irq_res = res; + return (0); + } else { + return (ENOENT); + } +} + +/* + * Release all resources + */ +void +ed_release_resources(dev) + device_t dev; +{ + struct ed_softc *sc = device_get_softc(dev); + + if (sc->port_res) { + bus_deactivate_resource(dev, SYS_RES_IOPORT, + sc->port_rid, sc->port_res); + bus_release_resource(dev, SYS_RES_IOPORT, + sc->port_rid, sc->port_res); + sc->port_res = 0; + } + if (sc->mem_res) { + bus_deactivate_resource(dev, SYS_RES_MEMORY, + sc->mem_rid, sc->mem_res); + bus_release_resource(dev, SYS_RES_MEMORY, + sc->mem_rid, sc->mem_res); + sc->mem_res = 0; + } + if (sc->irq_res) { + bus_deactivate_resource(dev, SYS_RES_IRQ, + sc->irq_rid, sc->irq_res); + bus_release_resource(dev, SYS_RES_IRQ, + sc->irq_rid, sc->irq_res); + sc->irq_res = 0; + } +} + +/* + * Install interface into kernel networking data structures + */ +int +ed_attach(sc, unit, flags) + struct ed_softc *sc; + int unit; + int flags; +{ + struct ifnet *ifp = &sc->arpcom.ac_if; + + callout_handle_init(&sc->tick_ch); + /* + * Set interface to stopped condition (reset) + */ + ed_stop(sc); + + if (!ifp->if_name) { + /* + * Initialize ifnet structure + */ + ifp->if_softc = sc; + ifp->if_unit = unit; + ifp->if_name = "ed"; + ifp->if_output = ether_output; + ifp->if_start = ed_start; + ifp->if_ioctl = ed_ioctl; + ifp->if_watchdog = ed_watchdog; + ifp->if_init = ed_init; + ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; + ifp->if_linkmib = &sc->mibdata; + ifp->if_linkmiblen = sizeof sc->mibdata; + /* + * XXX - should do a better job. + */ + if (sc->chip_type == ED_CHIP_TYPE_WD790) + sc->mibdata.dot3StatsEtherChipSet = + DOT3CHIPSET(dot3VendorWesternDigital, + dot3ChipSetWesternDigital83C790); + else + sc->mibdata.dot3StatsEtherChipSet = + DOT3CHIPSET(dot3VendorNational, + dot3ChipSetNational8390); + sc->mibdata.dot3Compliance = DOT3COMPLIANCE_COLLS; + + /* + * Set default state for ALTPHYS flag (used to disable the + * tranceiver for AUI operation), based on compile-time + * config option. + */ + if (flags & ED_FLAGS_DISABLE_TRANCEIVER) + ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | + IFF_MULTICAST | IFF_ALTPHYS); + else + ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | + IFF_MULTICAST); + + /* + * Attach the interface + */ + ether_ifattach(ifp, sc->arpcom.ac_enaddr); + } + /* device attach does transition from UNCONFIGURED to IDLE state */ + + /* + * Print additional info when attached + */ + if_printf(ifp, "address %6D, ", sc->arpcom.ac_enaddr, ":"); + + if (sc->type_str && (*sc->type_str != 0)) + printf("type %s ", sc->type_str); + else + printf("type unknown (0x%x) ", sc->type); + + if (sc->vendor == ED_VENDOR_HP) + printf("(%s %s IO)", (sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS) ? + "16-bit" : "32-bit", + sc->hpp_mem_start ? "memory mapped" : "regular"); + else + printf("%s ", sc->isa16bit ? "(16 bit)" : "(8 bit)"); + + printf("%s\n", (((sc->vendor == ED_VENDOR_3COM) || + (sc->vendor == ED_VENDOR_HP)) && + (ifp->if_flags & IFF_ALTPHYS)) ? " tranceiver disabled" : ""); + + return (0); +} + +/* + * Reset interface. + */ +static void +ed_reset(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc = ifp->if_softc; + int s; + + if (sc->gone) + return; + s = splimp(); + + /* + * Stop interface and re-initialize. + */ + ed_stop(sc); + ed_init(sc); + + (void) splx(s); +} + +/* + * Take interface offline. + */ +void +ed_stop(sc) + struct ed_softc *sc; +{ + int n = 5000; + +#ifndef ED_NO_MIIBUS + untimeout(ed_tick, sc, sc->tick_ch); + callout_handle_init(&sc->tick_ch); +#endif + if (sc->gone) + return; + /* + * Stop everything on the interface, and select page 0 registers. + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | 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. + */ + if (sc->chip_type != ED_CHIP_TYPE_AX88190) + while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST) == 0) && --n); +} + +/* + * Device timeout/watchdog routine. Entered if the device neglects to + * generate an interrupt after a transmit has been started on it. + */ +static void +ed_watchdog(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc = ifp->if_softc; + + if (sc->gone) + return; + log(LOG_ERR, "ed%d: device timeout\n", ifp->if_unit); + ifp->if_oerrors++; + + ed_reset(ifp); +} + +#ifndef ED_NO_MIIBUS +static void +ed_tick(arg) + void *arg; +{ + struct ed_softc *sc = arg; + struct mii_data *mii; + int s; + + if (sc->gone) { + callout_handle_init(&sc->tick_ch); + return; + } + s = splimp(); + if (sc->miibus != NULL) { + mii = device_get_softc(sc->miibus); + mii_tick(mii); + } + sc->tick_ch = timeout(ed_tick, sc, hz); + splx(s); +} +#endif + +/* + * Initialize device. + */ +static void +ed_init(xsc) + void *xsc; +{ + struct ed_softc *sc = xsc; + struct ifnet *ifp = &sc->arpcom.ac_if; + int i, s; + + if (sc->gone) + return; + + /* address not known */ + if (TAILQ_EMPTY(&ifp->if_addrhead)) /* unlikely? XXX */ + 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 = splimp(); + + /* reset transmitter flags */ + sc->xmit_busy = 0; + ifp->if_timer = 0; + + sc->txb_inuse = 0; + sc->txb_new = 0; + sc->txb_next_tx = 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 + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP); + + if (sc->isa16bit) { + + /* + * Set FIFO threshold to 8, No auto-init Remote DMA, byte + * order=80x86, word-wide DMA xfers, + */ + ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_WTS | ED_DCR_LS); + } else { + + /* + * Same as above, but byte-wide DMA xfers + */ + ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); + } + + /* + * Clear Remote Byte Count Registers + */ + ed_nic_outb(sc, ED_P0_RBCR0, 0); + ed_nic_outb(sc, ED_P0_RBCR1, 0); + + /* + * For the moment, don't store incoming packets in memory. + */ + ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON); + + /* + * Place NIC in internal loopback mode + */ + ed_nic_outb(sc, ED_P0_TCR, ED_TCR_LB0); + + /* + * Initialize transmit/receive (ring-buffer) Page Start + */ + ed_nic_outb(sc, ED_P0_TPSR, sc->tx_page_start); + ed_nic_outb(sc, ED_P0_PSTART, sc->rec_page_start); + /* Set lower bits of byte addressable framing to 0 */ + if (sc->chip_type == ED_CHIP_TYPE_WD790) + ed_nic_outb(sc, 0x09, 0); + + /* + * Initialize Receiver (ring-buffer) Page Stop and Boundry + */ + ed_nic_outb(sc, ED_P0_PSTOP, sc->rec_page_stop); + ed_nic_outb(sc, ED_P0_BNRY, sc->rec_page_start); + + /* + * Clear all interrupts. A '1' in each bit position clears the + * corresponding flag. + */ + ed_nic_outb(sc, 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. + */ + ed_nic_outb(sc, ED_P0_IMR, + ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | ED_IMR_OVWE); + + /* + * Program Command Register for page 1 + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); + + /* + * Copy out our station address + */ + for (i = 0; i < ETHER_ADDR_LEN; ++i) + ed_nic_outb(sc, ED_P1_PAR(i), sc->arpcom.ac_enaddr[i]); + + /* + * Set Current Page pointer to next_packet (initialized above) + */ + ed_nic_outb(sc, ED_P1_CURR, sc->next_packet); + + /* + * Program Receiver Configuration Register and multicast filter. CR is + * set to page 0 on return. + */ + ed_setrcr(sc); + + /* + * Take interface out of loopback + */ + ed_nic_outb(sc, ED_P0_TCR, 0); + + /* + * If this is a 3Com board, the tranceiver must be software enabled + * (there is no settable hardware default). + */ + if (sc->vendor == ED_VENDOR_3COM) { + if (ifp->if_flags & IFF_ALTPHYS) { + ed_asic_outb(sc, ED_3COM_CR, 0); + } else { + ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); + } + } + +#ifndef ED_NO_MIIBUS + if (sc->miibus != NULL) { + struct mii_data *mii; + mii = device_get_softc(sc->miibus); + mii_mediachg(mii); + } +#endif + /* + * 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); + +#ifndef ED_NO_MIIBUS + untimeout(ed_tick, sc, sc->tick_ch); + sc->tick_ch = timeout(ed_tick, sc, hz); +#endif + (void) splx(s); +} + +/* + * This routine actually starts the transmission on the interface + */ +static __inline void +ed_xmit(sc) + struct ed_softc *sc; +{ + struct ifnet *ifp = (struct ifnet *)sc; + unsigned short len; + + if (sc->gone) + return; + len = sc->txb_len[sc->txb_next_tx]; + + /* + * Set NIC for page 0 register access + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); + + /* + * Set TX buffer start page + */ + ed_nic_outb(sc, ED_P0_TPSR, sc->tx_page_start + + sc->txb_next_tx * ED_TXBUF_SIZE); + + /* + * Set TX length + */ + ed_nic_outb(sc, ED_P0_TBCR0, len); + ed_nic_outb(sc, ED_P0_TBCR1, len >> 8); + + /* + * Set page 0, Remote DMA complete, Transmit Packet, and *Start* + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_TXP | ED_CR_STA); + sc->xmit_busy = 1; + + /* + * Point to next transmit buffer slot and wrap if necessary. + */ + sc->txb_next_tx++; + if (sc->txb_next_tx == sc->txb_cnt) + sc->txb_next_tx = 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 splimp _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) + */ +static void +ed_start(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc = ifp->if_softc; + struct mbuf *m0, *m; + caddr_t buffer; + int len; + + if (sc->gone) { + printf("ed_start(%p) GONE\n",ifp); + return; + } +outloop: + + /* + * First, see if there are buffered packets and an idle transmitter - + * should never happen at this point. + */ + if (sc->txb_inuse && (sc->xmit_busy == 0)) { + printf("ed: packets buffered, but transmitter idle\n"); + ed_xmit(sc); + } + + /* + * See if there is room to put another packet in the buffer. + */ + if (sc->txb_inuse == sc->txb_cnt) { + + /* + * No room. Indicate this to the outside world and exit. + */ + ifp->if_flags |= IFF_OACTIVE; + return; + } + IF_DEQUEUE(&ifp->if_snd, m); + if (m == 0) { + + /* + * 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 all the + * buffers with data then we still want to accept more. + */ + ifp->if_flags &= ~IFF_OACTIVE; + return; + } + + /* + * Copy the mbuf chain into the transmit buffer + */ + + m0 = m; + + /* txb_new points to next open buffer slot */ + buffer = sc->mem_start + (sc->txb_new * ED_TXBUF_SIZE * ED_PAGE_SIZE); + + if (sc->mem_shared) { + + /* + * Special case setup for 16 bit boards... + */ + if (sc->isa16bit) { + switch (sc->vendor) { + + /* + * For 16bit 3Com boards (which have 16k of + * memory), we have the xmit buffers in a + * different page of memory ('page 0') - so + * change pages. + */ + case ED_VENDOR_3COM: + ed_asic_outb(sc, ED_3COM_GACFR, + ED_3COM_GACFR_RSEL); + break; + + /* + * Enable 16bit access to shared memory on + * WD/SMC boards. + */ + case ED_VENDOR_WD_SMC: + ed_asic_outb(sc, ED_WD_LAAR, + sc->wd_laar_proto | ED_WD_LAAR_M16EN); + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB); + } + break; + } + } + for (len = 0; 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 memory access + */ + if (sc->isa16bit) { + switch (sc->vendor) { + case ED_VENDOR_3COM: + ed_asic_outb(sc, ED_3COM_GACFR, + ED_3COM_GACFR_RSEL | ED_3COM_GACFR_MBS0); + break; + case ED_VENDOR_WD_SMC: + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + ed_asic_outb(sc, ED_WD_MSR, 0x00); + } + ed_asic_outb(sc, ED_WD_LAAR, + sc->wd_laar_proto & ~ED_WD_LAAR_M16EN); + break; + } + } + } else { + len = ed_pio_write_mbufs(sc, m, (int)buffer); + if (len == 0) { + m_freem(m0); + goto outloop; + } + } + + sc->txb_len[sc->txb_new] = max(len, (ETHER_MIN_LEN-ETHER_CRC_LEN)); + + sc->txb_inuse++; + + /* + * Point to next buffer slot and wrap if necessary. + */ + sc->txb_new++; + if (sc->txb_new == sc->txb_cnt) + sc->txb_new = 0; + + if (sc->xmit_busy == 0) + ed_xmit(sc); + + /* + * Tap off here if there is a bpf listener. + */ + BPF_MTAP(ifp, m0); + + m_freem(m0); + + /* + * Loop back to the top to possibly buffer more packets + */ + goto outloop; +} + +/* + * Ethernet interface receiver interrupt. + */ +static __inline void +ed_rint(sc) + struct ed_softc *sc; +{ + struct ifnet *ifp = &sc->arpcom.ac_if; + u_char boundry; + u_short len; + struct ed_ring packet_hdr; + char *packet_ptr; + + if (sc->gone) + return; + + /* + * Set NIC to page 1 registers to get 'current' pointer + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | 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 != ed_nic_inb(sc, ED_P1_CURR)) { + + /* get pointer to this buffer's header structure */ + packet_ptr = sc->mem_ring + + (sc->next_packet - sc->rec_page_start) * ED_PAGE_SIZE; + + /* + * The byte count includes a 4 byte header that was added by + * the NIC. + */ + if (sc->mem_shared) + packet_hdr = *(struct ed_ring *) packet_ptr; + else + ed_pio_readmem(sc, (int)packet_ptr, (char *) &packet_hdr, + sizeof(packet_hdr)); + len = packet_hdr.count; + if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN + sizeof(struct ed_ring)) || + len < (ETHER_MIN_LEN - ETHER_CRC_LEN + sizeof(struct ed_ring))) { + /* + * Length is a wild value. There's a good chance that + * this was caused by the NIC being old and buggy. + * The bug is that the length low byte is duplicated in + * the high byte. Try to recalculate the length based on + * the pointer to the next packet. + */ + /* + * NOTE: sc->next_packet is pointing at the current packet. + */ + len &= ED_PAGE_SIZE - 1; /* preserve offset into page */ + if (packet_hdr.next_packet >= sc->next_packet) { + len += (packet_hdr.next_packet - sc->next_packet) * ED_PAGE_SIZE; + } else { + len += ((packet_hdr.next_packet - sc->rec_page_start) + + (sc->rec_page_stop - sc->next_packet)) * ED_PAGE_SIZE; + } + /* + * because buffers are aligned on 256-byte boundary, + * the length computed above is off by 256 in almost + * all cases. Fix it... + */ + if (len & 0xff) + len -= 256 ; + if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN + + sizeof(struct ed_ring))) + sc->mibdata.dot3StatsFrameTooLongs++; + } + /* + * Be fairly liberal about what we allow as a "reasonable" length + * so that a [crufty] packet will make it to BPF (and can thus + * be analyzed). Note that all that is really important is that + * we have a length that will fit into one mbuf cluster or less; + * the upper layer protocols can then figure out the length from + * their own length field(s). + * But make sure that we have at least a full ethernet header + * or we would be unable to call ether_input() later. + */ + if ((len >= sizeof(struct ed_ring) + ETHER_HDR_LEN) && + (len <= MCLBYTES) && + (packet_hdr.next_packet >= sc->rec_page_start) && + (packet_hdr.next_packet < sc->rec_page_stop)) { + /* + * Go get packet. + */ + ed_get_packet(sc, packet_ptr + sizeof(struct ed_ring), + len - sizeof(struct ed_ring)); + ifp->if_ipackets++; + } else { + /* + * Really BAD. The ring pointers are corrupted. + */ + log(LOG_ERR, + "ed%d: NIC memory corrupt - invalid packet length %d\n", + ifp->if_unit, len); + ifp->if_ierrors++; + ed_reset(ifp); + return; + } + + /* + * Update next packet pointer + */ + sc->next_packet = packet_hdr.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 + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); + + ed_nic_outb(sc, ED_P0_BNRY, boundry); + + /* + * Set NIC to page 1 registers before looping to top (prepare + * to get 'CURR' current pointer) + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); + } +} + +/* + * Ethernet interface interrupt processor + */ +void +edintr(arg) + void *arg; +{ + struct ed_softc *sc = (struct ed_softc*) arg; + struct ifnet *ifp = (struct ifnet *)sc; + u_char isr; + int count; + + if (sc->gone) + return; + /* + * Set NIC to page 0 registers + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); + + /* + * loop until there are no more new interrupts. When the card + * goes away, the hardware will read back 0xff. Looking at + * the interrupts, it would appear that 0xff is impossible, + * or at least extremely unlikely. + */ + while ((isr = ed_nic_inb(sc, ED_P0_ISR)) != 0 && isr != 0xff) { + + /* + * reset all the bits that we are 'acknowledging' by writing a + * '1' to each bit position that was set (writing a '1' + * *clears* the bit) + */ + ed_nic_outb(sc, ED_P0_ISR, isr); + + /* + * XXX workaround for AX88190 + * We limit this to 5000 iterations. At 1us per inb/outb, + * this translates to about 15ms, which should be plenty + * of time, and also gives protection in the card eject + * case. + */ + if (sc->chip_type == ED_CHIP_TYPE_AX88190) { + count = 5000; /* 15ms */ + while (count-- && (ed_nic_inb(sc, ED_P0_ISR) & isr)) { + ed_nic_outb(sc, ED_P0_ISR,0); + ed_nic_outb(sc, ED_P0_ISR,isr); + } + if (count == 0) + break; + } + + /* + * Handle transmitter interrupts. Handle these first because + * the receiver will reset the board under some conditions. + */ + if (isr & (ED_ISR_PTX | ED_ISR_TXE)) { + u_char collisions = ed_nic_inb(sc, ED_P0_NCR) & 0x0f; + + /* + * Check for 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. + */ + (void) ed_nic_inb(sc, ED_P0_TSR); + if (isr & ED_ISR_TXE) { + u_char tsr; + + /* + * Excessive collisions (16) + */ + tsr = ed_nic_inb(sc, ED_P0_TSR); + if ((tsr & ED_TSR_ABT) + && (collisions == 0)) { + + /* + * When collisions total 16, the + * P0_NCR will indicate 0, and the + * TSR_ABT is set. + */ + collisions = 16; + sc->mibdata.dot3StatsExcessiveCollisions++; + sc->mibdata.dot3StatsCollFrequencies[15]++; + } + if (tsr & ED_TSR_OWC) + sc->mibdata.dot3StatsLateCollisions++; + if (tsr & ED_TSR_CDH) + sc->mibdata.dot3StatsSQETestErrors++; + if (tsr & ED_TSR_CRS) + sc->mibdata.dot3StatsCarrierSenseErrors++; + if (tsr & ED_TSR_FU) + sc->mibdata.dot3StatsInternalMacTransmitErrors++; + + /* + * update output errors counter + */ + ifp->if_oerrors++; + } else { + + /* + * Update total number of successfully + * transmitted packets. + */ + ifp->if_opackets++; + } + + /* + * reset tx busy and output active flags + */ + sc->xmit_busy = 0; + ifp->if_flags &= ~IFF_OACTIVE; + + /* + * clear watchdog timer + */ + ifp->if_timer = 0; + + /* + * Add in total number of collisions on last + * transmission. + */ + ifp->if_collisions += collisions; + switch(collisions) { + case 0: + case 16: + break; + case 1: + sc->mibdata.dot3StatsSingleCollisionFrames++; + sc->mibdata.dot3StatsCollFrequencies[0]++; + break; + default: + sc->mibdata.dot3StatsMultipleCollisionFrames++; + sc->mibdata. + dot3StatsCollFrequencies[collisions-1] + ++; + break; + } + + /* + * Decrement buffer in-use count if not zero (can only + * be zero if a transmitter interrupt occured while + * not actually transmitting). If data is ready to + * transmit, start it transmitting, otherwise defer + * until after handling receiver + */ + if (sc->txb_inuse && --sc->txb_inuse) + ed_xmit(sc); + } + + /* + * Handle receiver interrupts + */ + if (isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) { + + /* + * 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) { + ifp->if_ierrors++; +#ifdef DIAGNOSTIC + log(LOG_WARNING, + "ed%d: warning - receiver ring buffer overrun\n", + ifp->if_unit); +#endif + + /* + * Stop/reset/re-init NIC + */ + ed_reset(ifp); + } else { + + /* + * Receiver Error. One or more of: CRC error, + * frame alignment error FIFO overrun, or + * missed packet. + */ + if (isr & ED_ISR_RXE) { + u_char rsr; + rsr = ed_nic_inb(sc, ED_P0_RSR); + if (rsr & ED_RSR_CRC) + sc->mibdata.dot3StatsFCSErrors++; + if (rsr & ED_RSR_FAE) + sc->mibdata.dot3StatsAlignmentErrors++; + if (rsr & ED_RSR_FO) + sc->mibdata.dot3StatsInternalMacReceiveErrors++; + ifp->if_ierrors++; +#ifdef ED_DEBUG + if_printf(ifp, "receive error %x\n", + ed_nic_inb(sc, ED_P0_RSR)); +#endif + } + + /* + * Go get the packet(s) 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). + */ + + /* + * Enable 16bit access to shared memory first + * on WD/SMC boards. + */ + if (sc->isa16bit && + (sc->vendor == ED_VENDOR_WD_SMC)) { + + ed_asic_outb(sc, ED_WD_LAAR, + sc->wd_laar_proto | ED_WD_LAAR_M16EN); + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + ed_asic_outb(sc, ED_WD_MSR, + ED_WD_MSR_MENB); + } + } + ed_rint(sc); + + /* disable 16bit access */ + if (sc->isa16bit && + (sc->vendor == ED_VENDOR_WD_SMC)) { + + if (sc->chip_type == ED_CHIP_TYPE_WD790) { + ed_asic_outb(sc, ED_WD_MSR, 0x00); + } + ed_asic_outb(sc, ED_WD_LAAR, + sc->wd_laar_proto & ~ED_WD_LAAR_M16EN); + } + } + } + + /* + * If it looks like the transmitter can take more data, + * attempt to start output on the interface. This is done + * after handling the receiver to give the receiver priority. + */ + if ((ifp->if_flags & IFF_OACTIVE) == 0) + ed_start(ifp); + + /* + * return NIC CR to standard state: 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) + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); + + /* + * If the Network Talley Counters overflow, read them to reset + * them. It appears that old 8390's won't clear the ISR flag + * otherwise - resulting in an infinite loop. + */ + if (isr & ED_ISR_CNT) { + (void) ed_nic_inb(sc, ED_P0_CNTR0); + (void) ed_nic_inb(sc, ED_P0_CNTR1); + (void) ed_nic_inb(sc, ED_P0_CNTR2); + } + } +} + +/* + * Process an ioctl request. This code needs some work - it looks + * pretty ugly. + */ +static int +ed_ioctl(ifp, command, data) + register struct ifnet *ifp; + u_long command; + caddr_t data; +{ + struct ed_softc *sc = ifp->if_softc; +#ifndef ED_NO_MIIBUS + struct ifreq *ifr = (struct ifreq *)data; + struct mii_data *mii; +#endif + int s, error = 0; + + if (sc == NULL || sc->gone) { + ifp->if_flags &= ~IFF_RUNNING; + return ENXIO; + } + s = splimp(); + + switch (command) { + case SIOCSIFFLAGS: + + /* + * If the interface is marked up and stopped, then start it. + * If it is marked down and running, then stop it. + */ + if (ifp->if_flags & IFF_UP) { + if ((ifp->if_flags & IFF_RUNNING) == 0) + ed_init(sc); + } else { + if (ifp->if_flags & IFF_RUNNING) { + ed_stop(sc); + ifp->if_flags &= ~IFF_RUNNING; + } + } + + /* + * Promiscuous flag may have changed, so reprogram the RCR. + */ + ed_setrcr(sc); + + /* + * An unfortunate hack to provide the (required) software + * control of the tranceiver for 3Com boards. The ALTPHYS flag + * disables the tranceiver if set. + */ + if (sc->vendor == ED_VENDOR_3COM) { + if (ifp->if_flags & IFF_ALTPHYS) { + ed_asic_outb(sc, ED_3COM_CR, 0); + } else { + ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); + } + } else if (sc->vendor == ED_VENDOR_HP) + ed_hpp_set_physical_link(sc); + break; + + case SIOCADDMULTI: + case SIOCDELMULTI: + /* + * Multicast list has changed; set the hardware filter + * accordingly. + */ + ed_setrcr(sc); + error = 0; + break; + +#ifndef ED_NO_MIIBUS + case SIOCGIFMEDIA: + case SIOCSIFMEDIA: + if (sc->miibus == NULL) { + error = EINVAL; + break; + } + mii = device_get_softc(sc->miibus); + error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); + break; +#endif + + default: + error = ether_ioctl(ifp, command, data); + } + (void) splx(s); + return (error); +} + +/* + * 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->mem_end) { + tmp_amount = sc->mem_end - src; + + /* copy amount up to end of NIC memory */ + if (sc->mem_shared) + bcopy(src, dst, tmp_amount); + else + ed_pio_readmem(sc, (int)src, dst, tmp_amount); + + amount -= tmp_amount; + src = sc->mem_ring; + dst += tmp_amount; + } + if (sc->mem_shared) + bcopy(src, dst, amount); + else + ed_pio_readmem(sc, (int)src, dst, amount); + + return (src + amount); +} + +/* + * Retreive packet from shared memory and send to the next level up via + * ether_input(). + */ +static void +ed_get_packet(sc, buf, len) + struct ed_softc *sc; + char *buf; + u_short len; +{ + struct ifnet *ifp = &sc->arpcom.ac_if; + struct ether_header *eh; + struct mbuf *m; + + /* Allocate a header mbuf */ + MGETHDR(m, M_DONTWAIT, MT_DATA); + if (m == NULL) + return; + m->m_pkthdr.rcvif = ifp; + m->m_pkthdr.len = m->m_len = len; + + /* + * We always put the received packet in a single buffer - + * either with just an mbuf header or in a cluster attached + * to the header. The +2 is to compensate for the alignment + * fixup below. + */ + if ((len + 2) > MHLEN) { + /* Attach an mbuf cluster */ + MCLGET(m, M_DONTWAIT); + + /* Insist on getting a cluster */ + if ((m->m_flags & M_EXT) == 0) { + m_freem(m); + return; + } + } + + /* + * The +2 is to longword align the start of the real packet. + * This is important for NFS. + */ + m->m_data += 2; + eh = mtod(m, struct ether_header *); + + /* + * Don't read in the entire packet if we know we're going to drop it + * and no bpf is active. + */ + if (!ifp->if_bpf && BDG_ACTIVE( (ifp) ) ) { + struct ifnet *bif; + + ed_ring_copy(sc, buf, (char *)eh, ETHER_HDR_LEN); + bif = bridge_in_ptr(ifp, eh) ; + if (bif == BDG_DROP) { + m_freem(m); + return; + } + if (len > ETHER_HDR_LEN) + ed_ring_copy(sc, buf + ETHER_HDR_LEN, + (char *)(eh + 1), len - ETHER_HDR_LEN); + } else + /* + * Get packet, including link layer address, from interface. + */ + ed_ring_copy(sc, buf, (char *)eh, len); + + m->m_pkthdr.len = m->m_len = len; + + (*ifp->if_input)(ifp, m); +} + +/* + * Supporting routines + */ + +/* + * Given a NIC memory source address and a host memory destination + * address, copy 'amount' from NIC to host using Programmed I/O. + * The 'amount' is rounded up to a word - okay as long as mbufs + * are word sized. + * This routine is currently Novell-specific. + */ +void +ed_pio_readmem(sc, src, dst, amount) + struct ed_softc *sc; + int src; + unsigned char *dst; + unsigned short amount; +{ + /* HP PC Lan+ cards need special handling */ + if (sc->vendor == ED_VENDOR_HP && sc->type == ED_TYPE_HP_PCLANPLUS) { + ed_hpp_readmem(sc, src, dst, amount); + return; + } + + /* Regular Novell cards */ + /* select page 0 registers */ + ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA); + + /* round up to a word */ + if (amount & 1) + ++amount; + + /* set up DMA byte count */ + ed_nic_outb(sc, ED_P0_RBCR0, amount); + ed_nic_outb(sc, ED_P0_RBCR1, amount >> 8); + + /* set up source address in NIC mem */ + ed_nic_outb(sc, ED_P0_RSAR0, src); + ed_nic_outb(sc, ED_P0_RSAR1, src >> 8); + + ed_nic_outb(sc, ED_P0_CR, ED_CR_RD0 | ED_CR_STA); + + if (sc->isa16bit) { + ed_asic_insw(sc, ED_NOVELL_DATA, dst, amount / 2); + } else { + ed_asic_insb(sc, ED_NOVELL_DATA, dst, amount); + } +} + +/* + * Stripped down routine for writing a linear buffer to NIC memory. + * Only used in the probe routine to test the memory. 'len' must + * be even. + */ +void +ed_pio_writemem(sc, src, dst, len) + struct ed_softc *sc; + char *src; + unsigned short dst; + unsigned short len; +{ + int maxwait = 200; /* about 240us */ + + /* select page 0 registers */ + ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA); + + /* reset remote DMA complete flag */ + ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); + + /* set up DMA byte count */ + ed_nic_outb(sc, ED_P0_RBCR0, len); + ed_nic_outb(sc, ED_P0_RBCR1, len >> 8); + + /* set up destination address in NIC mem */ + ed_nic_outb(sc, ED_P0_RSAR0, dst); + ed_nic_outb(sc, ED_P0_RSAR1, dst >> 8); + + /* set remote DMA write */ + ed_nic_outb(sc, ED_P0_CR, ED_CR_RD1 | ED_CR_STA); + + if (sc->isa16bit) { + ed_asic_outsw(sc, ED_NOVELL_DATA, src, len / 2); + } else { + ed_asic_outsb(sc, ED_NOVELL_DATA, src, len); + } + + /* + * Wait for remote DMA complete. This is necessary because on the + * transmit side, data is handled internally by the NIC in bursts and + * we can't start another remote DMA until this one completes. Not + * waiting causes really bad things to happen - like the NIC + * irrecoverably jamming the ISA bus. + */ + while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) && --maxwait); +} + +/* + * Write an mbuf chain to the destination NIC memory address using + * programmed I/O. + */ +static u_short +ed_pio_write_mbufs(sc, m, dst) + struct ed_softc *sc; + struct mbuf *m; + int dst; +{ + struct ifnet *ifp = (struct ifnet *)sc; + unsigned short total_len, dma_len; + struct mbuf *mp; + int maxwait = 200; /* about 240us */ + + /* HP PC Lan+ cards need special handling */ + if (sc->vendor == ED_VENDOR_HP && sc->type == ED_TYPE_HP_PCLANPLUS) { + return ed_hpp_write_mbufs(sc, m, dst); + } + + /* Regular Novell cards */ + /* First, count up the total number of bytes to copy */ + for (total_len = 0, mp = m; mp; mp = mp->m_next) + total_len += mp->m_len; + + dma_len = total_len; + if (sc->isa16bit && (dma_len & 1)) + dma_len++; + + /* select page 0 registers */ + ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA); + + /* reset remote DMA complete flag */ + ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); + + /* set up DMA byte count */ + ed_nic_outb(sc, ED_P0_RBCR0, dma_len); + ed_nic_outb(sc, ED_P0_RBCR1, dma_len >> 8); + + /* set up destination address in NIC mem */ + ed_nic_outb(sc, ED_P0_RSAR0, dst); + ed_nic_outb(sc, ED_P0_RSAR1, dst >> 8); + + /* set remote DMA write */ + ed_nic_outb(sc, ED_P0_CR, ED_CR_RD1 | ED_CR_STA); + + /* + * Transfer the mbuf chain to the NIC memory. + * 16-bit cards require that data be transferred as words, and only words. + * So that case requires some extra code to patch over odd-length mbufs. + */ + + if (!sc->isa16bit) { + /* NE1000s are easy */ + while (m) { + if (m->m_len) { + ed_asic_outsb(sc, ED_NOVELL_DATA, + m->m_data, m->m_len); + } + m = m->m_next; + } + } else { + /* NE2000s are a pain */ + unsigned char *data; + int len, wantbyte; + unsigned char savebyte[2]; + + wantbyte = 0; + + while (m) { + len = m->m_len; + if (len) { + data = mtod(m, caddr_t); + /* finish the last word */ + if (wantbyte) { + savebyte[1] = *data; + ed_asic_outw(sc, ED_NOVELL_DATA, + *(u_short *)savebyte); + data++; + len--; + wantbyte = 0; + } + /* output contiguous words */ + if (len > 1) { + ed_asic_outsw(sc, ED_NOVELL_DATA, + data, len >> 1); + data += len & ~1; + len &= 1; + } + /* save last byte, if necessary */ + if (len == 1) { + savebyte[0] = *data; + wantbyte = 1; + } + } + m = m->m_next; + } + /* spit last byte */ + if (wantbyte) { + ed_asic_outw(sc, ED_NOVELL_DATA, *(u_short *)savebyte); + } + } + + /* + * Wait for remote DMA complete. This is necessary because on the + * transmit side, data is handled internally by the NIC in bursts and + * we can't start another remote DMA until this one completes. Not + * waiting causes really bad things to happen - like the NIC + * irrecoverably jamming the ISA bus. + */ + while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) && --maxwait); + + if (!maxwait) { + log(LOG_WARNING, "ed%d: remote transmit DMA failed to complete\n", + ifp->if_unit); + ed_reset(ifp); + return(0); + } + return (total_len); +} + +/* + * Support routines to handle the HP PC Lan+ card. + */ + +/* + * HP PC Lan+: Read from NIC memory, using either PIO or memory mapped + * IO. + */ + +static void +ed_hpp_readmem(sc, src, dst, amount) + struct ed_softc *sc; + unsigned short src; + unsigned char *dst; + unsigned short amount; +{ + + int use_32bit_access = !(sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS); + + + /* Program the source address in RAM */ + ed_asic_outw(sc, ED_HPP_PAGE_2, src); + + /* + * The HP PC Lan+ card supports word reads as well as + * a memory mapped i/o port that is aliased to every + * even address on the board. + */ + + if (sc->hpp_mem_start) { + + /* Enable memory mapped access. */ + ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options & + ~(ED_HPP_OPTION_MEM_DISABLE | + ED_HPP_OPTION_BOOT_ROM_ENB)); + + if (use_32bit_access && (amount > 3)) { + u_int32_t *dl = (u_int32_t *) dst; + volatile u_int32_t *const sl = + (u_int32_t *) sc->hpp_mem_start; + u_int32_t *const fence = dl + (amount >> 2); + + /* Copy out NIC data. We could probably write this + as a `movsl'. The currently generated code is lousy. + */ + + while (dl < fence) + *dl++ = *sl; + + dst += (amount & ~3); + amount &= 3; + + } + + /* Finish off any words left, as a series of short reads */ + if (amount > 1) { + u_short *d = (u_short *) dst; + volatile u_short *const s = + (u_short *) sc->hpp_mem_start; + u_short *const fence = d + (amount >> 1); + + /* Copy out NIC data. */ + + while (d < fence) + *d++ = *s; + + dst += (amount & ~1); + amount &= 1; + } + + /* + * read in a byte; however we need to always read 16 bits + * at a time or the hardware gets into a funny state + */ + + if (amount == 1) { + /* need to read in a short and copy LSB */ + volatile u_short *const s = + (volatile u_short *) sc->hpp_mem_start; + + *dst = (*s) & 0xFF; + } + + /* Restore Boot ROM access. */ + + ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options); + + + } else { + /* Read in data using the I/O port */ + if (use_32bit_access && (amount > 3)) { + ed_asic_insl(sc, ED_HPP_PAGE_4, dst, amount >> 2); + dst += (amount & ~3); + amount &= 3; + } + if (amount > 1) { + ed_asic_insw(sc, ED_HPP_PAGE_4, dst, amount >> 1); + dst += (amount & ~1); + amount &= 1; + } + if (amount == 1) { /* read in a short and keep the LSB */ + *dst = ed_asic_inw(sc, ED_HPP_PAGE_4) & 0xFF; + } + } +} + +/* + * HP PC Lan+: Write to NIC memory, using either PIO or memory mapped + * IO. + * Only used in the probe routine to test the memory. 'len' must + * be even. + */ +static void +ed_hpp_writemem(sc, src, dst, len) + struct ed_softc *sc; + unsigned char *src; + unsigned short dst; + unsigned short len; +{ + /* reset remote DMA complete flag */ + ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); + + /* program the write address in RAM */ + ed_asic_outw(sc, ED_HPP_PAGE_0, dst); + + if (sc->hpp_mem_start) { + u_short *s = (u_short *) src; + volatile u_short *d = (u_short *) sc->hpp_mem_start; + u_short *const fence = s + (len >> 1); + + /* + * Enable memory mapped access. + */ + + ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options & + ~(ED_HPP_OPTION_MEM_DISABLE | + ED_HPP_OPTION_BOOT_ROM_ENB)); + + /* + * Copy to NIC memory. + */ + + while (s < fence) + *d = *s++; + + /* + * Restore Boot ROM access. + */ + + ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options); + + } else { + /* write data using I/O writes */ + ed_asic_outsw(sc, ED_HPP_PAGE_4, src, len / 2); + } +} + +/* + * Write to HP PC Lan+ NIC memory. Access to the NIC can be by using + * outsw() or via the memory mapped interface to the same register. + * Writes have to be in word units; byte accesses won't work and may cause + * the NIC to behave weirdly. Long word accesses are permitted if the ASIC + * allows it. + */ + +static u_short +ed_hpp_write_mbufs(struct ed_softc *sc, struct mbuf *m, int dst) +{ + int len, wantbyte; + unsigned short total_len; + unsigned char savebyte[2]; + volatile u_short * const d = + (volatile u_short *) sc->hpp_mem_start; + int use_32bit_accesses = !(sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS); + + /* select page 0 registers */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); + + /* reset remote DMA complete flag */ + ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); + + /* program the write address in RAM */ + ed_asic_outw(sc, ED_HPP_PAGE_0, dst); + + if (sc->hpp_mem_start) /* enable memory mapped I/O */ + ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options & + ~(ED_HPP_OPTION_MEM_DISABLE | + ED_HPP_OPTION_BOOT_ROM_ENB)); + + wantbyte = 0; + total_len = 0; + + if (sc->hpp_mem_start) { /* Memory mapped I/O port */ + while (m) { + total_len += (len = m->m_len); + if (len) { + caddr_t data = mtod(m, caddr_t); + /* finish the last word of the previous mbuf */ + if (wantbyte) { + savebyte[1] = *data; + *d = *((ushort *) savebyte); + data++; len--; wantbyte = 0; + } + /* output contiguous words */ + if ((len > 3) && (use_32bit_accesses)) { + volatile u_int32_t *const dl = + (volatile u_int32_t *) d; + u_int32_t *sl = (u_int32_t *) data; + u_int32_t *fence = sl + (len >> 2); + + while (sl < fence) + *dl = *sl++; + + data += (len & ~3); + len &= 3; + } + /* finish off remain 16 bit writes */ + if (len > 1) { + u_short *s = (u_short *) data; + u_short *fence = s + (len >> 1); + + while (s < fence) + *d = *s++; + + data += (len & ~1); + len &= 1; + } + /* save last byte if needed */ + if ((wantbyte = (len == 1)) != 0) + savebyte[0] = *data; + } + m = m->m_next; /* to next mbuf */ + } + if (wantbyte) /* write last byte */ + *d = *((u_short *) savebyte); + } else { + /* use programmed I/O */ + while (m) { + total_len += (len = m->m_len); + if (len) { + caddr_t data = mtod(m, caddr_t); + /* finish the last word of the previous mbuf */ + if (wantbyte) { + savebyte[1] = *data; + ed_asic_outw(sc, ED_HPP_PAGE_4, + *((u_short *)savebyte)); + data++; + len--; + wantbyte = 0; + } + /* output contiguous words */ + if ((len > 3) && use_32bit_accesses) { + ed_asic_outsl(sc, ED_HPP_PAGE_4, + data, len >> 2); + data += (len & ~3); + len &= 3; + } + /* finish off remaining 16 bit accesses */ + if (len > 1) { + ed_asic_outsw(sc, ED_HPP_PAGE_4, + data, len >> 1); + data += (len & ~1); + len &= 1; + } + if ((wantbyte = (len == 1)) != 0) + savebyte[0] = *data; + + } /* if len != 0 */ + m = m->m_next; + } + if (wantbyte) /* spit last byte */ + ed_asic_outw(sc, ED_HPP_PAGE_4, *(u_short *)savebyte); + + } + + if (sc->hpp_mem_start) /* turn off memory mapped i/o */ + ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options); + + return (total_len); +} + +#ifndef ED_NO_MIIBUS +/* + * MII bus support routines. + */ +int +ed_miibus_readreg(dev, phy, reg) + device_t dev; + int phy, reg; +{ + struct ed_softc *sc; + int failed, s, val; + + s = splimp(); + sc = device_get_softc(dev); + if (sc->gone) { + splx(s); + return (0); + } + + (*sc->mii_writebits)(sc, 0xffffffff, 32); + (*sc->mii_writebits)(sc, ED_MII_STARTDELIM, ED_MII_STARTDELIM_BITS); + (*sc->mii_writebits)(sc, ED_MII_READOP, ED_MII_OP_BITS); + (*sc->mii_writebits)(sc, phy, ED_MII_PHY_BITS); + (*sc->mii_writebits)(sc, reg, ED_MII_REG_BITS); + + failed = (*sc->mii_readbits)(sc, ED_MII_ACK_BITS); + val = (*sc->mii_readbits)(sc, ED_MII_DATA_BITS); + (*sc->mii_writebits)(sc, ED_MII_IDLE, ED_MII_IDLE_BITS); + + splx(s); + return (failed ? 0 : val); +} + +void +ed_miibus_writereg(dev, phy, reg, data) + device_t dev; + int phy, reg, data; +{ + struct ed_softc *sc; + int s; + + s = splimp(); + sc = device_get_softc(dev); + if (sc->gone) { + splx(s); + return; + } + + (*sc->mii_writebits)(sc, 0xffffffff, 32); + (*sc->mii_writebits)(sc, ED_MII_STARTDELIM, ED_MII_STARTDELIM_BITS); + (*sc->mii_writebits)(sc, ED_MII_WRITEOP, ED_MII_OP_BITS); + (*sc->mii_writebits)(sc, phy, ED_MII_PHY_BITS); + (*sc->mii_writebits)(sc, reg, ED_MII_REG_BITS); + (*sc->mii_writebits)(sc, ED_MII_TURNAROUND, ED_MII_TURNAROUND_BITS); + (*sc->mii_writebits)(sc, data, ED_MII_DATA_BITS); + (*sc->mii_writebits)(sc, ED_MII_IDLE, ED_MII_IDLE_BITS); + + splx(s); +} + +int +ed_ifmedia_upd(ifp) + struct ifnet *ifp; +{ + struct ed_softc *sc; + struct mii_data *mii; + + sc = ifp->if_softc; + if (sc->gone || sc->miibus == NULL) + return (ENXIO); + + mii = device_get_softc(sc->miibus); + return mii_mediachg(mii); +} + +void +ed_ifmedia_sts(ifp, ifmr) + struct ifnet *ifp; + struct ifmediareq *ifmr; +{ + struct ed_softc *sc; + struct mii_data *mii; + + sc = ifp->if_softc; + if (sc->gone || sc->miibus == NULL) + return; + + mii = device_get_softc(sc->miibus); + mii_pollstat(mii); + ifmr->ifm_active = mii->mii_media_active; + ifmr->ifm_status = mii->mii_media_status; +} + +void +ed_child_detached(dev, child) + device_t dev; + device_t child; +{ + struct ed_softc *sc; + + sc = device_get_softc(dev); + if (child == sc->miibus) + sc->miibus = NULL; +} +#endif + +static void +ed_setrcr(sc) + struct ed_softc *sc; +{ + struct ifnet *ifp = (struct ifnet *)sc; + int i; + u_char reg1; + + /* Bit 6 in AX88190 RCR register must be set. */ + if (sc->chip_type == ED_CHIP_TYPE_AX88190) + reg1 = ED_RCR_INTT; + else + reg1 = 0x00; + + /* set page 1 registers */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); + + if (ifp->if_flags & IFF_PROMISC) { + + /* + * Reconfigure the multicast filter. + */ + for (i = 0; i < 8; i++) + ed_nic_outb(sc, ED_P1_MAR(i), 0xff); + + /* + * And turn on promiscuous mode. Also enable reception of + * runts and packets with CRC & alignment errors. + */ + /* Set page 0 registers */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP); + + ed_nic_outb(sc, ED_P0_RCR, ED_RCR_PRO | ED_RCR_AM | + ED_RCR_AB | ED_RCR_AR | ED_RCR_SEP | reg1); + } else { + /* set up multicast addresses and filter modes */ + if (ifp->if_flags & IFF_MULTICAST) { + u_int32_t mcaf[2]; + + if (ifp->if_flags & IFF_ALLMULTI) { + mcaf[0] = 0xffffffff; + mcaf[1] = 0xffffffff; + } else + ds_getmcaf(sc, mcaf); + + /* + * Set multicast filter on chip. + */ + for (i = 0; i < 8; i++) + ed_nic_outb(sc, ED_P1_MAR(i), ((u_char *) mcaf)[i]); + + /* Set page 0 registers */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP); + + ed_nic_outb(sc, ED_P0_RCR, ED_RCR_AM | ED_RCR_AB | reg1); + } else { + + /* + * Initialize multicast address hashing registers to + * not accept multicasts. + */ + for (i = 0; i < 8; ++i) + ed_nic_outb(sc, ED_P1_MAR(i), 0x00); + + /* Set page 0 registers */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP); + + ed_nic_outb(sc, ED_P0_RCR, ED_RCR_AB | reg1); + } + } + + /* + * Start interface. + */ + ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); +} + +/* + * Compute crc for ethernet address + */ +static u_int32_t +ds_crc(ep) + u_char *ep; +{ +#define POLYNOMIAL 0x04c11db6 + register u_int32_t crc = 0xffffffff; + register int carry, i, j; + register u_char b; + + for (i = 6; --i >= 0;) { + b = *ep++; + for (j = 8; --j >= 0;) { + carry = ((crc & 0x80000000) ? 1 : 0) ^ (b & 0x01); + crc <<= 1; + b >>= 1; + if (carry) + crc = (crc ^ POLYNOMIAL) | carry; + } + } + return crc; +#undef POLYNOMIAL +} + +/* + * Compute the multicast address filter from the + * list of multicast addresses we need to listen to. + */ +static void +ds_getmcaf(sc, mcaf) + struct ed_softc *sc; + u_int32_t *mcaf; +{ + register u_int32_t index; + register u_char *af = (u_char *) mcaf; + struct ifmultiaddr *ifma; + + mcaf[0] = 0; + mcaf[1] = 0; + + TAILQ_FOREACH(ifma, &sc->arpcom.ac_if.if_multiaddrs, ifma_link) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + index = ds_crc(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)) + >> 26; + af[index >> 3] |= 1 << (index & 7); + } +} |
