/* $NetBSD: ne2000.c,v 1.74 2013/08/11 12:34:16 rkujawa Exp $ */ /*- * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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, 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Device driver for National Semiconductor DS8390/WD83C690 based ethernet * adapters. * * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved. * * 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. */ /* * Common code shared by all NE2000-compatible Ethernet interfaces. */ #include __KERNEL_RCSID(0, "$NetBSD: ne2000.c,v 1.74 2013/08/11 12:34:16 rkujawa Exp $"); #include "opt_ipkdb.h" #include "rtl80x9.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef __BUS_SPACE_HAS_STREAM_METHODS #define bus_space_write_stream_2 bus_space_write_2 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ #ifdef IPKDB_NE #include #endif #include #include #include #include #include #include #include static int ne2000_write_mbuf(struct dp8390_softc *, struct mbuf *, int); static int ne2000_ring_copy(struct dp8390_softc *, int, void *, u_short); static void ne2000_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *); static int ne2000_test_mem(struct dp8390_softc *); static void ne2000_writemem(bus_space_tag_t, bus_space_handle_t, bus_space_tag_t, bus_space_handle_t, const uint8_t *, int, size_t, int, int); static void ne2000_readmem(bus_space_tag_t, bus_space_handle_t, bus_space_tag_t, bus_space_handle_t, int, uint8_t *, size_t, int); #ifdef NE2000_DETECT_8BIT static bool ne2000_detect_8bit(bus_space_tag_t, bus_space_handle_t, bus_space_tag_t, bus_space_handle_t); #endif #define ASIC_BARRIER(asict, asich) \ bus_space_barrier((asict), (asich), 0, 0x10, \ BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE) int ne2000_attach(struct ne2000_softc *nsc, uint8_t *myea) { struct dp8390_softc *dsc = &nsc->sc_dp8390; bus_space_tag_t nict = dsc->sc_regt; bus_space_handle_t nich = dsc->sc_regh; bus_space_tag_t asict = nsc->sc_asict; bus_space_handle_t asich = nsc->sc_asich; uint8_t romdata[16]; int memstart, memsize, i, useword; /* * Detect it again unless caller specified it; this gives us * the memory size. */ if (nsc->sc_type == NE2000_TYPE_UNKNOWN) nsc->sc_type = ne2000_detect(nict, nich, asict, asich); /* * 8k of memory for NE1000, 16k for NE2000 and 24k for the * card uses DL10019. */ switch (nsc->sc_type) { case NE2000_TYPE_UNKNOWN: default: aprint_error_dev(dsc->sc_dev, "where did the card go?\n"); return 1; case NE2000_TYPE_NE1000: memstart = 8192; memsize = 8192; useword = 0; break; case NE2000_TYPE_NE2000: case NE2000_TYPE_AX88190: /* XXX really? */ case NE2000_TYPE_AX88790: case NE2000_TYPE_AX88796: #if NRTL80X9 > 0 case NE2000_TYPE_RTL8019: #endif memstart = 16384; memsize = 16384; useword = 1; if ( #ifdef NE2000_DETECT_8BIT ne2000_detect_8bit(nict, nich, asict, asich) || #endif (nsc->sc_quirk & NE2000_QUIRK_8BIT) != 0) { /* in 8 bit mode, only 8KB memory can be used */ memsize = 8192; useword = 0; } break; case NE2000_TYPE_DL10019: case NE2000_TYPE_DL10022: memstart = 8192 * 3; memsize = 8192 * 3; useword = 1; break; } nsc->sc_useword = useword; #if NRTL80X9 > 0 if (nsc->sc_type == NE2000_TYPE_RTL8019) { dsc->init_card = rtl80x9_init_card; dsc->sc_media_init = rtl80x9_media_init; dsc->sc_mediachange = rtl80x9_mediachange; dsc->sc_mediastatus = rtl80x9_mediastatus; } #endif dsc->cr_proto = ED_CR_RD2; if (nsc->sc_type == NE2000_TYPE_AX88190 || nsc->sc_type == NE2000_TYPE_AX88790) { dsc->rcr_proto = ED_RCR_INTT; dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; } else dsc->rcr_proto = 0; /* * DCR gets: * * FIFO threshold to 8, No auto-init Remote DMA, * byte order=80x86. * * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. */ dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); dsc->test_mem = ne2000_test_mem; dsc->ring_copy = ne2000_ring_copy; dsc->write_mbuf = ne2000_write_mbuf; dsc->read_hdr = ne2000_read_hdr; /* Registers are linear. */ for (i = 0; i < 16; i++) dsc->sc_reg_map[i] = i; /* * NIC memory doens't start at zero on an NE board. * The start address is tied to the bus width. */ #ifdef GWETHER { int x; int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], tbuf[ED_PAGE_SIZE]; memstart = 0; for (i = 0; i < ED_PAGE_SIZE; i++) pbuf0[i] = 0; /* Search for the start of RAM. */ for (x = 1; x < 256; x++) { ne2000_writemem(nict, nich, asict, asich, pbuf0, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); ne2000_readmem(nict, nich, asict, asich, x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { for (i = 0; i < ED_PAGE_SIZE; i++) pbuf[i] = 255 - x; ne2000_writemem(nict, nich, asict, asich, pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); ne2000_readmem(nict, nich, asict, asich, x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { memstart = x << ED_PAGE_SHIFT; memsize = ED_PAGE_SIZE; break; } } } if (memstart == 0) { aprint_error_dev(dsc->sc_dev, "cannot find start of RAM\n"); return 1; } /* Search for the end of RAM. */ for (++x; x < 256; x++) { ne2000_writemem(nict, nich, asict, asich, pbuf0, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); ne2000_readmem(nict, nich, asict, asich, x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { for (i = 0; i < ED_PAGE_SIZE; i++) pbuf[i] = 255 - x; ne2000_writemem(nict, nich, asict, asich, pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); ne2000_readmem(nict, nich, asict, asich, x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) memsize += ED_PAGE_SIZE; else break; } else break; } printf("%s: RAM start 0x%x, size %d\n", device_xname(dsc->sc_dev), memstart, memsize); } #endif /* GWETHER */ dsc->mem_start = memstart; dsc->mem_size = memsize; if (myea == NULL) { /* Read the station address. */ if (nsc->sc_type == NE2000_TYPE_AX88190 || nsc->sc_type == NE2000_TYPE_AX88790 || nsc->sc_type == NE2000_TYPE_AX88796) { /* Select page 0 registers. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); /* Select word transfer. */ bus_space_write_1(nict, nich, ED_P0_DCR, useword ? ED_DCR_WTS : 0); NIC_BARRIER(nict, nich); ne2000_readmem(nict, nich, asict, asich, AX88190_NODEID_OFFSET, dsc->sc_enaddr, ETHER_ADDR_LEN, useword); } else { bool ne1000 = (nsc->sc_type == NE2000_TYPE_NE1000); ne2000_readmem(nict, nich, asict, asich, 0, romdata, sizeof(romdata), useword); for (i = 0; i < ETHER_ADDR_LEN; i++) dsc->sc_enaddr[i] = romdata[i * (ne1000 ? 1 : 2)]; } } else memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); /* Clear any pending interrupts that might have occurred above. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); NIC_BARRIER(nict, nich); if (dsc->sc_media_init == NULL) dsc->sc_media_init = dp8390_media_init; if (dp8390_config(dsc)) { aprint_error_dev(dsc->sc_dev, "setup failed\n"); return 1; } return 0; } /* * Detect an NE-2000 or compatible. Returns a model code. */ int ne2000_detect(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich) { const uint8_t test_pattern[32] = "THIS is A memory TEST pattern"; uint8_t test_buffer[32], tmp; int i, rv = NE2000_TYPE_UNKNOWN; int useword; /* Reset the board. */ #ifdef GWETHER bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); ASIC_BARRIER(asict, asich); delay(200); #endif /* GWETHER */ tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); ASIC_BARRIER(asict, asich); delay(10000); /* * 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.] */ bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp); ASIC_BARRIER(asict, asich); 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 */ bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); NIC_BARRIER(nict, nich); delay(5000); /* * Generic probe routine for testing for the existence of a DS8390. * Must be performed after the NIC has just been reset. This * works by looking at certain register values that are guaranteed * to be initialized a certain way after power-up or reset. * * Specifically: * * Register reset bits set bits * -------- ---------- -------- * CR TXP, STA RD2, STP * ISR RST * IMR * DCR LAS * TCR LB1, LB0 * * We only look at CR and ISR, however, since looking at the others * would require changing register pages, which would be intrusive * if this isn't an 8390. */ tmp = bus_space_read_1(nict, nich, ED_P0_CR); if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != (ED_CR_RD2 | ED_CR_STP)) goto out; tmp = bus_space_read_1(nict, nich, ED_P0_ISR); if ((tmp & ED_ISR_RST) != ED_ISR_RST) goto out; bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); for (i = 0; i < 100; i++) { if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == ED_ISR_RST) { /* Ack the reset bit. */ bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); NIC_BARRIER(nict, nich); break; } delay(100); } #if 0 /* XXX */ if (i == 100) goto out; #endif /* * Test the ability to read and write to the NIC memory. This has * the side effect 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. */ bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); NIC_BARRIER(nict, nich); /* Temporarily initialize DCR for byte operations. */ bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); /* * 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. */ ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, sizeof(test_pattern), 0, 1); ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, sizeof(test_buffer), 0); if (memcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) { /* We're an NE1000. */ rv = NE2000_TYPE_NE1000; goto out; } /* not an NE1000 - try NE2000 */ /* try 16 bit mode first */ useword = 1; #ifdef NE2000_DETECT_8BIT /* * Check bus type in EEPROM first because some NE2000 compatible wedges * on 16 bit DMA access if the chip is configured in 8 bit mode. */ if (ne2000_detect_8bit(nict, nich, asict, asich)) useword = 0; #endif again: bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0)); bus_space_write_1(nict, nich, ED_P0_PSTART, 16384 >> ED_PAGE_SHIFT); bus_space_write_1(nict, nich, ED_P0_PSTOP, (16384 + (useword ? 16384 : 8192)) >> ED_PAGE_SHIFT); /* * Write the test pattern in word mode. If this also fails, * then we don't know what this board is. */ ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, sizeof(test_pattern), useword, 1); ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, sizeof(test_buffer), useword); if (memcmp(test_pattern, test_buffer, sizeof(test_pattern)) != 0) { if (useword == 1) { /* try 8 bit mode */ useword = 0; goto again; } return NE2000_TYPE_UNKNOWN; /* not an NE2000 either */ } rv = NE2000_TYPE_NE2000; #if NRTL80X9 > 0 /* Check for a Realtek RTL8019. */ if (bus_space_read_1(nict, nich, NERTL_RTL0_8019ID0) == RTL0_8019ID0 && bus_space_read_1(nict, nich, NERTL_RTL0_8019ID1) == RTL0_8019ID1) rv = NE2000_TYPE_RTL8019; #endif out: /* Clear any pending interrupts that might have occurred above. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); return rv; } #ifdef NE2000_DETECT_8BIT static bool ne2000_detect_8bit(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich) { bool is8bit; uint8_t romdata[32]; is8bit = false; /* Set DCR for 8 bit DMA. */ bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); /* Read PROM area. */ ne2000_readmem(nict, nich, asict, asich, 0, romdata, sizeof(romdata), 0); if (romdata[28] == 'B' && romdata[30] == 'B') { /* 'B' (0x42) in 8 bit mode, 'W' (0x57) in 16 bit mode */ is8bit = true; } if (!is8bit) { /* not in 8 bit mode; put back DCR setting for 16 bit DMA */ bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS | ED_DCR_WTS); } return is8bit; } #endif /* * Write an mbuf chain to the destination NIC memory address using programmed * I/O. */ int ne2000_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf) { struct ne2000_softc *nsc = (struct ne2000_softc *)sc; bus_space_tag_t nict = sc->sc_regt; bus_space_handle_t nich = sc->sc_regh; bus_space_tag_t asict = nsc->sc_asict; bus_space_handle_t asich = nsc->sc_asich; int savelen, padlen; int maxwait = 100; /* about 120us */ savelen = m->m_pkthdr.len; if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - savelen; savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; } else padlen = 0; /* Select page 0 registers. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); /* Reset remote DMA complete flag. */ bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); NIC_BARRIER(nict, nich); /* Set up DMA byte count. */ bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); /* Set up destination address in NIC mem. */ bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); /* Set remote DMA write. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); /* * Transfer the mbuf chain to the NIC memory. NE2000 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 (nsc->sc_useword == 0) { /* byte ops are easy. */ for (; m != NULL; m = m->m_next) { if (m->m_len) { bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, mtod(m, uint8_t *), m->m_len); } } if (padlen) { for(; padlen > 0; padlen--) bus_space_write_1(asict, asich, NE2000_ASIC_DATA, 0); } } else { /* word ops are a bit trickier. */ uint8_t *data, savebyte[2]; int l, leftover; #ifdef DIAGNOSTIC uint8_t *lim; #endif /* Start out with no leftover data. */ leftover = 0; savebyte[0] = savebyte[1] = 0; for (; m != NULL; m = m->m_next) { l = m->m_len; if (l == 0) continue; data = mtod(m, uint8_t *); #ifdef DIAGNOSTIC lim = data + l; #endif while (l > 0) { if (leftover) { /* * Data left over (from mbuf or * realignment). Buffer the next * byte, and write it and the * leftover data out. */ savebyte[1] = *data++; l--; bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, *(uint16_t *)savebyte); leftover = 0; } else if (BUS_SPACE_ALIGNED_POINTER(data, uint16_t) == 0) { /* * Unaligned data; buffer the next * byte. */ savebyte[0] = *data++; l--; leftover = 1; } else { /* * Aligned data; output contiguous * words as much as we can, then * buffer the remaining byte, if any. */ leftover = l & 1; l &= ~1; bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, (uint16_t *)data, l >> 1); data += l; if (leftover) savebyte[0] = *data++; l = 0; } } if (l < 0) panic("ne2000_write_mbuf: negative len"); #ifdef DIAGNOSTIC if (data != lim) panic("ne2000_write_mbuf: data != lim"); #endif } if (leftover) { savebyte[1] = 0; bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, *(uint16_t *)savebyte); } if (padlen) { for(; padlen > 1; padlen -= 2) bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 0); } } NIC_BARRIER(nict, nich); /* some AX88796 doesn't seem to have remote DMA complete */ if (sc->sc_flags & DP8390_NO_REMOTE_DMA_COMPLETE) return savelen; /* * Wait for remote DMA to 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 wedging * the bus. */ while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) && --maxwait) { (void)bus_space_read_1(nict, nich, ED_P0_CRDA1); (void)bus_space_read_1(nict, nich, ED_P0_CRDA0); NIC_BARRIER(nict, nich); DELAY(1); } if (maxwait == 0) { log(LOG_WARNING, "%s: remote transmit DMA failed to complete\n", device_xname(sc->sc_dev)); dp8390_reset(sc); } return savelen; } /* * Given a source and destination address, copy 'amout' of a packet from * the ring buffer into a linear destination buffer. Takes into account * ring-wrap. */ int ne2000_ring_copy(struct dp8390_softc *sc, int src, void *dstv, u_short amount) { char *dst = dstv; struct ne2000_softc *nsc = (struct ne2000_softc *)sc; bus_space_tag_t nict = sc->sc_regt; bus_space_handle_t nich = sc->sc_regh; bus_space_tag_t asict = nsc->sc_asict; bus_space_handle_t asich = nsc->sc_asich; u_short tmp_amount; int useword = nsc->sc_useword; /* 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. */ ne2000_readmem(nict, nich, asict, asich, src, (uint8_t *)dst, tmp_amount, useword); amount -= tmp_amount; src = sc->mem_ring; dst += tmp_amount; } ne2000_readmem(nict, nich, asict, asich, src, (uint8_t *)dst, amount, useword); return src + amount; } void ne2000_read_hdr(struct dp8390_softc *sc, int buf, struct dp8390_ring *hdr) { struct ne2000_softc *nsc = (struct ne2000_softc *)sc; ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, buf, (uint8_t *)hdr, sizeof(struct dp8390_ring), nsc->sc_useword); #if BYTE_ORDER == BIG_ENDIAN hdr->count = bswap16(hdr->count); #endif } int ne2000_test_mem(struct dp8390_softc *sc) { /* Noop. */ return 0; } /* * 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 - ok as long as mbufs are word sized. */ void ne2000_readmem(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich, int src, uint8_t *dst, size_t amount, int useword) { /* Select page 0 registers. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); /* Round up to a word. */ amount = roundup2(amount, sizeof(uint16_t)); /* Set up DMA byte count. */ bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); /* Set up source address in NIC mem. */ bus_space_write_1(nict, nich, ED_P0_RSAR0, src); bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); ASIC_BARRIER(asict, asich); if (useword) bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, (uint16_t *)dst, amount >> 1); else bus_space_read_multi_1(asict, asich, NE2000_ASIC_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 ne2000_writemem(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich, const uint8_t *src, int dst, size_t len, int useword, int quiet) { int maxwait = 100; /* about 120us */ /* Select page 0 registers. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); /* Reset remote DMA complete flag. */ bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); NIC_BARRIER(nict, nich); /* Set up DMA byte count. */ bus_space_write_1(nict, nich, ED_P0_RBCR0, len); bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8); /* Set up destination address in NIC mem. */ bus_space_write_1(nict, nich, ED_P0_RSAR0, dst); bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8); /* Set remote DMA write. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); ASIC_BARRIER(asict, asich); if (useword) bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, (const uint16_t *)src, len >> 1); else bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, src, len); ASIC_BARRIER(asict, asich); /* * Wait for remote DMA to 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 wedging * the bus. */ while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) && --maxwait) DELAY(1); if (!quiet && maxwait == 0) printf("ne2000_writemem: failed to complete\n"); } int ne2000_detach(struct ne2000_softc *sc, int flags) { return dp8390_detach(&sc->sc_dp8390, flags); } #ifdef IPKDB_NE /* * This code is essentially the same as ne2000_attach above. */ int ne2000_ipkdb_attach(struct ipkdb_if *kip) { struct ne2000_softc *np = kip->port; struct dp8390_softc *dp = &np->sc_dp8390; bus_space_tag_t nict = dp->sc_regt; bus_space_handle_t nich = dp->sc_regh; bus_space_tag_t asict = np->sc_asict; bus_space_handle_t asich = np->sc_asich; int i, useword; #ifdef GWETHER /* Not supported (yet?) */ return -1; #endif if (np->sc_type == NE2000_TYPE_UNKNOWN) np->sc_type = ne2000_detect(nict, nich, asict, asich); if (np->sc_type == NE2000_TYPE_UNKNOWN) return -1; switch (np->sc_type) { case NE2000_TYPE_NE1000: dp->mem_start = 8192; dp->mem_size = 8192; useword = 0; kip->name = "ne1000"; break; case NE2000_TYPE_NE2000: case NE2000_TYPE_AX88190: case NE2000_TYPE_AX88790: case NE2000_TYPE_AX88796: #if NRTL80X9 > 0 case NE2000_TYPE_RTL8019: #endif dp->mem_start = 16384; dp->mem_size = 16384; useword = 1; if ( #ifdef NE2000_DETECT_8BIT ne2000_detect_8bit(nict, nich, asict, asich) || #endif (np->sc_quirk & NE2000_QUIRK_8BIT) != 0) { /* in 8 bit mode, only 8KB memory can be used */ dp->mem_size = 8192; useword = 0; } kip->name = (np->sc_type == NE2000_TYPE_AX88190 || np->sc_type == NE2000_TYPE_AX88790) ? "ax88190" : "ne2000"; break; case NE2000_TYPE_DL10019: case NE2000_TYPE_DL10022: dp->mem_start = 8192 * 3; dp->mem_size = 8192 * 3; useword = 1; kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? "dl10022" : "dl10019"; break; default: return -1; break; } np->sc_useword = useword; #if NRTL80X9 > 0 if (np->sc_type == NE2000_TYPE_RTL8019) { dp->init_card = rtl80x9_init_card; dp->sc_media_init = rtl80x9_media_init; dp->sc_mediachange = rtl80x9_mediachange; dp->sc_mediastatus = rtl80x9_mediastatus; } #endif dp->cr_proto = ED_CR_RD2; if (np->sc_type == NE2000_TYPE_AX88190 || np->sc_type == NE2000_TYPE_AX88790) { dp->rcr_proto = ED_RCR_INTT; dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; } else dp->rcr_proto = 0; dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); dp->test_mem = ne2000_test_mem; dp->ring_copy = ne2000_ring_copy; dp->write_mbuf = ne2000_write_mbuf; dp->read_hdr = ne2000_read_hdr; for (i = 0; i < 16; i++) dp->sc_reg_map[i] = i; if (dp8390_ipkdb_attach(kip)) return -1; if (!(kip->flags & IPKDB_MYHW)) { char romdata[16]; /* Read the station address. */ if (np->sc_type == NE2000_TYPE_AX88190 || np->sc_type == NE2000_TYPE_AX88790 || np->sc_type == NE2000_TYPE_AX88796) { /* Select page 0 registers. */ NIC_BARRIER(nict, nich); bus_space_write_1(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); NIC_BARRIER(nict, nich); /* Select word transfer */ bus_space_write_1(nict, nich, ED_P0_DCR, useword ? ED_DCR_WTS : 0); ne2000_readmem(nict, nich, asict, asich, AX88190_NODEID_OFFSET, kip->myenetaddr, ETHER_ADDR_LEN, useword); } else { bool ne1000 = (np->sc_type == NE2000_TYPE_NE1000); ne2000_readmem(nict, nich, asict, asich, 0, romdata, sizeof romdata, useword); for (i = 0; i < ETHER_ADDR_LEN; i++) kip->myenetaddr[i] = romdata[i * (ne1000 ? 1 : 2)]; } kip->flags |= IPKDB_MYHW; } dp8390_stop(dp); return 0; } #endif bool ne2000_suspend(device_t self, const pmf_qual_t *qual) { struct ne2000_softc *sc = device_private(self); struct dp8390_softc *dsc = &sc->sc_dp8390; int s; s = splnet(); dp8390_stop(dsc); dp8390_disable(dsc); splx(s); return true; } bool ne2000_resume(device_t self, const pmf_qual_t *qual) { struct ne2000_softc *sc = device_private(self); struct dp8390_softc *dsc = &sc->sc_dp8390; struct ifnet *ifp = &dsc->sc_ec.ec_if; int s; s = splnet(); if (ifp->if_flags & IFF_UP) { if (dp8390_enable(dsc) == 0) dp8390_init(dsc); } splx(s); return true; }