/* $NetBSD: if_en_pci.c,v 1.37 2014/03/29 19:28:24 christos Exp $ */ /* * Copyright (c) 1996 Charles D. Cranor and Washington University. * 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, 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 ``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 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. */ /* * * i f _ e n _ p c i . c * * author: Chuck Cranor * started: spring, 1996. * * PCI glue for the eni155p card. */ #include __KERNEL_RCSID(0, "$NetBSD: if_en_pci.c,v 1.37 2014/03/29 19:28:24 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include /* * local structures */ struct en_pci_softc { /* bus independent stuff */ struct en_softc esc; /* PCI bus glue */ void *sc_ih; /* interrupt handle */ pci_chipset_tag_t en_pc; /* for PCI calls */ }; /* * local defines (PCI specific stuff) */ #if !defined(MIDWAY_ENIONLY) static void eni_get_macaddr(struct en_pci_softc *, struct pci_attach_args *); #endif #if !defined(MIDWAY_ADPONLY) static void adp_get_macaddr(struct en_pci_softc *, struct pci_attach_args *); #endif /* * address of config base memory address register in PCI config space * (this is card specific) */ #define PCI_CBMA PCI_BAR(0) /* * tonga (pci bridge). ENI cards only! */ #define EN_TONGA 0x60 /* PCI config addr of tonga reg */ #define TONGA_SWAP_DMA 0x80 /* endian swap control */ #define TONGA_SWAP_BYTE 0x40 #define TONGA_SWAP_WORD 0x20 /* * adaptec pci bridge. ADP cards only! */ #define ADP_PCIREG 0x050040 /* PCI control register */ #define ADP_PCIREG_RESET 0x1 /* reset card */ #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ #define ADP_PCIREG_SWAP_DMA 0x8 /* swap bytes on DMA */ /* * prototypes */ static int en_pci_match(device_t, cfdata_t, void *); static void en_pci_attach(device_t, device_t, void *); /* * PCI autoconfig attachments */ CFATTACH_DECL_NEW(en_pci, sizeof(struct en_pci_softc), en_pci_match, en_pci_attach, NULL, NULL); #if !defined(MIDWAY_ENIONLY) static void adp_busreset(void *); /* * bus specific reset function [ADP only!] */ static void adp_busreset(void *v) { struct en_softc *sc = (struct en_softc *) v; u_int32_t dummy; bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); DELAY(1000); /* let it reset */ dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) printf("adp_busreset: Adaptec ATM did NOT reset!\n"); } #endif /***********************************************************************/ /* * autoconfig stuff */ static int en_pci_match(device_t parent, cfdata_t match, void *aux) { struct pci_attach_args *pa = (struct pci_attach_args *) aux; #if !defined(MIDWAY_ADPONLY) if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_EFFICIENTNETS && (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) return 1; #endif #if !defined(MIDWAY_ENIONLY) if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP && (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5900 || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5905)) return 1; #endif return 0; } static void en_pci_attach(device_t parent, device_t self, void *aux) { struct en_pci_softc *scp = device_private(self); struct en_softc *sc = &scp->esc; struct pci_attach_args *pa = aux; pci_intr_handle_t ih; const char *intrstr; int retval; char intrbuf[PCI_INTRSTR_LEN]; sc->sc_dev = self; aprint_naive(": ATM controller\n"); aprint_normal("\n"); sc->is_adaptec = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP) ? 1 : 0; scp->en_pc = pa->pa_pc; /* * make sure bus mastering is enabled */ pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | PCI_COMMAND_MASTER_ENABLE); /* * interrupt map */ if (pci_intr_map(pa, &ih)) { aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n"); return; } intrstr = pci_intr_string(scp->en_pc, ih, intrbuf, sizeof(intrbuf)); scp->sc_ih = pci_intr_establish(scp->en_pc, ih, IPL_NET, en_intr, sc); if (scp->sc_ih == NULL) { aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n"); if (intrstr != NULL) aprint_error(" at %s", intrstr); aprint_error("\n"); return; } aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); sc->ipl = 1; /* XXX */ /* * memory map */ retval = pci_mapreg_map(pa, PCI_CBMA, PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, &sc->en_memt, &sc->en_base, NULL, &sc->en_obmemsz); if (retval) { aprint_error_dev(sc->sc_dev, "couldn't map memory\n"); return; } /* * set up pci bridge */ #if !defined(MIDWAY_ENIONLY) if (sc->is_adaptec) { adp_get_macaddr(scp, pa); sc->en_busreset = adp_busreset; adp_busreset(sc); } #endif #if !defined(MIDWAY_ADPONLY) if (!sc->is_adaptec) { eni_get_macaddr(scp, pa); sc->en_busreset = NULL; pci_conf_write(scp->en_pc, pa->pa_tag, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); } #endif /* * done PCI specific stuff */ en_attach(sc); } #if 0 static void en_pci_shutdown( int howto, void *sc) { struct en_pci_softc *psc = (struct en_pci_softc *)sc; en_reset(&psc->esc); DELAY(10); } #endif #if !defined(MIDWAY_ENIONLY) #if defined(__FreeBSD__) #define bus_space_read_1(t, h, o) \ ((void)t, (*(volatile u_int8_t *)((h) + (o)))) #endif static void adp_get_macaddr(struct en_pci_softc *scp, struct pci_attach_args *pa) { struct en_softc * sc = (struct en_softc *)scp; int lcv; for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++) sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base, MID_ADPMACOFF + lcv); } #endif /* MIDWAY_ENIONLY */ #if !defined(MIDWAY_ADPONLY) /* * Read station (MAC) address from serial EEPROM. * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. */ #define EN_PROM_MAGIC 0x0c #define EN_PROM_DATA 0x02 #define EN_PROM_CLK 0x01 #define EN_ESI 64 static void eni_get_macaddr(struct en_pci_softc *scp, struct pci_attach_args *pa) { struct en_softc *sc = (struct en_softc *)scp; pci_chipset_tag_t id = scp->en_pc; pcitag_t tag = pa->pa_tag; int i, j, address; u_int32_t data, t_data; u_int8_t tmp; t_data = pci_conf_read(id, tag, EN_TONGA) & 0xffffff00; data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; pci_conf_write(id, tag, EN_TONGA, data); for (i = 0; i < sizeof(sc->macaddr); i ++){ /* start operation */ data |= EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data &= ~EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); data &= ~EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); /* send address with serial line */ address = ((i + EN_ESI) << 1) + 1; for ( j = 7 ; j >= 0 ; j --){ data = (address >> j) & 1 ? data | EN_PROM_DATA : data & ~EN_PROM_DATA; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data &= ~EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); } /* get ack */ data |= EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data = pci_conf_read(id, tag, EN_TONGA); data &= ~EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); tmp = 0; for ( j = 7 ; j >= 0 ; j --){ tmp <<= 1; data |= EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data = pci_conf_read(id, tag, EN_TONGA); if(data & EN_PROM_DATA) tmp |= 1; data &= ~EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); } /* get ack */ data |= EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data = pci_conf_read(id, tag, EN_TONGA); data &= ~EN_PROM_CLK ; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_DATA ; pci_conf_write(id, tag, EN_TONGA, data); sc->macaddr[i] = tmp; } /* stop operation */ data &= ~EN_PROM_DATA; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_CLK; pci_conf_write(id, tag, EN_TONGA, data); data |= EN_PROM_DATA; pci_conf_write(id, tag, EN_TONGA, data); pci_conf_write(id, tag, EN_TONGA, t_data); } #endif /* !MIDWAY_ADPONLY */