/* $NetBSD: we.c,v 1.17 2010/03/19 15:59:22 tsutsui 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. */ /* * Device driver for the Western Digital/SMC 8003 and 8013 series, * and the SMC Elite Ultra (8216). */ #include __KERNEL_RCSID(0, "$NetBSD: we.c,v 1.17 2010/03/19 15:59:22 tsutsui Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef __BUS_SPACE_HAS_STREAM_METHODS #define bus_space_read_region_stream_2 bus_space_read_region_2 #define bus_space_write_stream_2 bus_space_write_2 #define bus_space_write_region_stream_2 bus_space_write_region_2 #endif static void we_set_media(struct we_softc *, int); static void we_media_init(struct dp8390_softc *); static int we_mediachange(struct dp8390_softc *); static void we_mediastatus(struct dp8390_softc *, struct ifmediareq *); static void we_recv_int(struct dp8390_softc *); static void we_init_card(struct dp8390_softc *); static int we_write_mbuf(struct dp8390_softc *, struct mbuf *, int); static int we_ring_copy(struct dp8390_softc *, int, void *, u_short); static void we_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *); static int we_test_mem(struct dp8390_softc *); static inline void we_readmem(struct we_softc *, int, uint8_t *, int); /* * Delay needed when switching 16-bit access to shared memory. */ #define WE_DELAY(wsc) delay(3) /* * Enable card RAM, and 16-bit access. */ #define WE_MEM_ENABLE(wsc) \ if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) { \ if ((wsc)->sc_flags & WE_16BIT_ENABLE) \ bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ WE_LAAR, (wsc)->sc_laar_proto | WE_LAAR_M16EN); \ bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB); \ WE_DELAY((wsc)); \ } /* * Disable card RAM, and 16-bit access. */ #define WE_MEM_DISABLE(wsc) \ if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) { \ bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ WE_MSR, (wsc)->sc_msr_proto); \ if ((wsc)->sc_flags & WE_16BIT_ENABLE) \ bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ WE_LAAR, (wsc)->sc_laar_proto); \ WE_DELAY((wsc)); \ } int we_config(device_t self, struct we_softc *wsc, const char *typestr) { struct dp8390_softc *sc = &wsc->sc_dp8390; uint8_t x; int i, forced_16bit = 0; /* * Allow user to override 16-bit mode. 8-bit takes precedence. */ if (device_cfdata(self)->cf_flags & DP8390_FORCE_16BIT_MODE) { wsc->sc_flags |= WE_16BIT_ENABLE; forced_16bit = 1; } if (device_cfdata(self)->cf_flags & DP8390_FORCE_8BIT_MODE) wsc->sc_flags &= ~WE_16BIT_ENABLE; /* Registers are linear. */ for (i = 0; i < 16; i++) sc->sc_reg_map[i] = i; /* Now we can use the NIC_{GET,PUT}() macros. */ aprint_normal_dev(self, "%s Ethernet (%s-bit)\n", typestr, wsc->sc_flags & WE_16BIT_ENABLE ? "16" : "8"); /* Get station address from EEPROM. */ for (i = 0; i < ETHER_ADDR_LEN; i++) sc->sc_enaddr[i] = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_PROM + i); /* * Set upper address bits and 8/16 bit access to shared memory. */ if (sc->is790) { wsc->sc_laar_proto = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR) & ~WE_LAAR_M16EN; bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, wsc->sc_laar_proto | (wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0)); } else if ((wsc->sc_type & WE_SOFTCONFIG) || #ifdef TOSH_ETHER (wsc->sc_type == WE_TYPE_TOSHIBA1) || (wsc->sc_type == WE_TYPE_TOSHIBA4) || #endif (forced_16bit) || (wsc->sc_type == WE_TYPE_WD8013EBT)) { wsc->sc_laar_proto = (wsc->sc_maddr >> 19) & WE_LAAR_ADDRHI; if (wsc->sc_flags & WE_16BIT_ENABLE) wsc->sc_laar_proto |= WE_LAAR_L16EN; bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, wsc->sc_laar_proto | (wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0)); } /* * Set address and enable interface shared memory. */ if (sc->is790) { x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR); bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, x | WE790_HWR_SWH); bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_RAR, ((wsc->sc_maddr >> WE790_RAR_OFF_SHIFT) & WE790_RAR_OFF) | ((wsc->sc_maddr & (1 << WE790_RAR_BASE_SHIFT)) != 0 ? WE790_RAR_BASE1 : WE790_RAR_BASE0) | (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_RAR) & ~(WE790_RAR_OFF | WE790_RAR_BASE))); bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, x); wsc->sc_msr_proto = 0x00; sc->cr_proto = 0x00; } else { #ifdef TOSH_ETHER if (wsc->sc_type == WE_TYPE_TOSHIBA1 || wsc->sc_type == WE_TYPE_TOSHIBA4) { /* XXX MAGIC CONSTANTS XXX */ bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR + 1, ((wsc->sc_maddr >> 8) & 0xe0) | 0x04); bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR + 2, ((wsc->sc_maddr >> 16) & 0x0f)); wsc->sc_msr_proto = WE_MSR_POW; } else #endif wsc->sc_msr_proto = (wsc->sc_maddr >> 13) & WE_MSR_ADDR; sc->cr_proto = ED_CR_RD2; } bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB); WE_DELAY(wsc); /* * DCR gets: * * FIFO threshold to 8, No auto-init Remote DMA, * byte order=80x86. * * 16-bit cards also get word-wide DMA transfers. */ sc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (wsc->sc_flags & WE_16BIT_ENABLE ? ED_DCR_WTS : 0); sc->test_mem = we_test_mem; sc->ring_copy = we_ring_copy; sc->write_mbuf = we_write_mbuf; sc->read_hdr = we_read_hdr; sc->recv_int = we_recv_int; sc->init_card = we_init_card; sc->sc_mediachange = we_mediachange; sc->sc_mediastatus = we_mediastatus; sc->mem_start = 0; /* sc->mem_size has to be set by frontend */ sc->sc_flags = device_cfdata(self)->cf_flags; /* Do generic parts of attach. */ if (wsc->sc_type & WE_SOFTCONFIG) sc->sc_media_init = we_media_init; else sc->sc_media_init = dp8390_media_init; if (dp8390_config(sc)) { aprint_error_dev(self, "configuration failed\n"); return 1; } /* * Disable 16-bit access to shared memory - we leave it disabled * so that: * * (1) machines reboot properly when the board is set to * 16-bit mode and there are conflicting 8-bit devices * within the same 128k address space as this board's * shared memory, and * * (2) so that other 8-bit devices with shared memory * in this same 128k address space will work. */ WE_MEM_DISABLE(wsc); return 0; } static int we_test_mem(struct dp8390_softc *sc) { struct we_softc *wsc = (struct we_softc *)sc; bus_space_tag_t memt = sc->sc_buft; bus_space_handle_t memh = sc->sc_bufh; bus_size_t memsize = sc->mem_size; int i; if (wsc->sc_flags & WE_16BIT_ENABLE) bus_space_set_region_2(memt, memh, 0, 0, memsize >> 1); else bus_space_set_region_1(memt, memh, 0, 0, memsize); if (wsc->sc_flags & WE_16BIT_ENABLE) { for (i = 0; i < memsize; i += 2) { if (bus_space_read_2(memt, memh, i) != 0) goto fail; } } else { for (i = 0; i < memsize; i++) { if (bus_space_read_1(memt, memh, i) != 0) goto fail; } } return 0; fail: aprint_error_dev(sc->sc_dev, "failed to clear shared memory at offset 0x%x\n", i); WE_MEM_DISABLE(wsc); return 1; } /* * Given a NIC memory source address and a host memory destination address, * copy 'len' from NIC to host using shared memory. The 'len' is rounded * up to a word - ok as long as mbufs are word-sized. */ static inline void we_readmem(struct we_softc *wsc, int from, uint8_t *to, int len) { bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; if (len & 1) ++len; if (wsc->sc_flags & WE_16BIT_ENABLE) bus_space_read_region_stream_2(memt, memh, from, (uint16_t *)to, len >> 1); else bus_space_read_region_1(memt, memh, from, to, len); } static int we_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf) { struct we_softc *wsc = (struct we_softc *)sc; bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; uint8_t *data, savebyte[2]; int savelen, len, leftover; #ifdef DIAGNOSTIC uint8_t *lim; #endif savelen = m->m_pkthdr.len; WE_MEM_ENABLE(wsc); /* * 8-bit boards are simple; no alignment tricks are necessary. */ if ((wsc->sc_flags & WE_16BIT_ENABLE) == 0) { for (; m != NULL; buf += m->m_len, m = m->m_next) bus_space_write_region_1(memt, memh, buf, mtod(m, uint8_t *), m->m_len); if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { bus_space_set_region_1(memt, memh, buf, 0, ETHER_MIN_LEN - ETHER_CRC_LEN - savelen); savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; } goto out; } /* Start out with no leftover data. */ leftover = 0; savebyte[0] = savebyte[1] = 0; for (; m != NULL; m = m->m_next) { len = m->m_len; if (len == 0) continue; data = mtod(m, uint8_t *); #ifdef DIAGNOSTIC lim = data + len; #endif while (len > 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++; len--; bus_space_write_stream_2(memt, memh, buf, *(uint16_t *)savebyte); buf += 2; leftover = 0; } else if (BUS_SPACE_ALIGNED_POINTER(data, uint16_t) == 0) { /* * Unaligned dta; buffer the next byte. */ savebyte[0] = *data++; len--; leftover = 1; } else { /* * Aligned data; output contiguous words as * much as we can, then buffer the remaining * byte, if any. */ leftover = len & 1; len &= ~1; bus_space_write_region_stream_2(memt, memh, buf, (uint16_t *)data, len >> 1); data += len; buf += len; if (leftover) savebyte[0] = *data++; len = 0; } } if (len < 0) panic("we_write_mbuf: negative len"); #ifdef DIAGNOSTIC if (data != lim) panic("we_write_mbuf: data != lim"); #endif } if (leftover) { savebyte[1] = 0; bus_space_write_stream_2(memt, memh, buf, *(uint16_t *)savebyte); buf += 2; } if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { bus_space_set_region_2(memt, memh, buf, 0, (ETHER_MIN_LEN - ETHER_CRC_LEN - savelen) >> 1); savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; } out: WE_MEM_DISABLE(wsc); return savelen; } static int we_ring_copy(struct dp8390_softc *sc, int src, void *dstv, u_short amount) { uint8_t *dst = dstv; struct we_softc *wsc = (struct we_softc *)sc; 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. */ we_readmem(wsc, src, dst, tmp_amount); amount -= tmp_amount; src = sc->mem_ring; dst += tmp_amount; } we_readmem(wsc, src, dst, amount); return src + amount; } static void we_read_hdr(struct dp8390_softc *sc, int packet_ptr, struct dp8390_ring *packet_hdrp) { struct we_softc *wsc = (struct we_softc *)sc; we_readmem(wsc, packet_ptr, (uint8_t *)packet_hdrp, sizeof(struct dp8390_ring)); #if BYTE_ORDER == BIG_ENDIAN packet_hdrp->count = bswap16(packet_hdrp->count); #endif } static void we_recv_int(struct dp8390_softc *sc) { struct we_softc *wsc = (struct we_softc *)sc; WE_MEM_ENABLE(wsc); dp8390_rint(sc); WE_MEM_DISABLE(wsc); } static void we_media_init(struct dp8390_softc *sc) { struct we_softc *wsc = (struct we_softc *)sc; int defmedia = IFM_ETHER; uint8_t x; if (sc->is790) { x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR); bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, x | WE790_HWR_SWH); if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) & WE790_GCR_GPOUT) defmedia |= IFM_10_2; else defmedia |= IFM_10_5; bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, x & ~WE790_HWR_SWH); } else { x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); if (x & WE_IRR_OUT2) defmedia |= IFM_10_2; else defmedia |= IFM_10_5; } ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_10_2, 0, NULL); ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_10_5, 0, NULL); ifmedia_set(&sc->sc_media, defmedia); } static int we_mediachange(struct dp8390_softc *sc) { /* * Current media is already set up. Just reset the interface * to let the new value take hold. The new media will be * set up in we_init_card() called via dp8390_init(). */ dp8390_reset(sc); return 0; } static void we_mediastatus(struct dp8390_softc *sc, struct ifmediareq *ifmr) { struct ifmedia *ifm = &sc->sc_media; /* * The currently selected media is always the active media. */ ifmr->ifm_active = ifm->ifm_cur->ifm_media; } static void we_init_card(struct dp8390_softc *sc) { struct we_softc *wsc = (struct we_softc *)sc; struct ifmedia *ifm = &sc->sc_media; if (wsc->sc_init_hook) (*wsc->sc_init_hook)(wsc); we_set_media(wsc, ifm->ifm_cur->ifm_media); } static void we_set_media(struct we_softc *wsc, int media) { struct dp8390_softc *sc = &wsc->sc_dp8390; bus_space_tag_t asict = wsc->sc_asict; bus_space_handle_t asich = wsc->sc_asich; uint8_t hwr, gcr, irr; if (sc->is790) { hwr = bus_space_read_1(asict, asich, WE790_HWR); bus_space_write_1(asict, asich, WE790_HWR, hwr | WE790_HWR_SWH); gcr = bus_space_read_1(asict, asich, WE790_GCR); if (IFM_SUBTYPE(media) == IFM_10_2) gcr |= WE790_GCR_GPOUT; else gcr &= ~WE790_GCR_GPOUT; bus_space_write_1(asict, asich, WE790_GCR, gcr | WE790_GCR_LIT); bus_space_write_1(asict, asich, WE790_HWR, hwr & ~WE790_HWR_SWH); return; } irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); if (IFM_SUBTYPE(media) == IFM_10_2) irr |= WE_IRR_OUT2; else irr &= ~WE_IRR_OUT2; bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr); }