1/* $NetBSD: netslot.c,v 1.12 2023/12/20 06:13:59 thorpej Exp $ */ 2 3/* 4 * Copyright (c) 1994-1996 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Brini. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include <sys/param.h> 37 38__KERNEL_RCSID(1, "$NetBSD: netslot.c,v 1.12 2023/12/20 06:13:59 thorpej Exp $"); 39 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/conf.h> 43#include <sys/device.h> 44#include <uvm/uvm_extern.h> 45#include <machine/io.h> 46#include <machine/intr.h> 47#include <machine/bootconfig.h> 48#include <arm/iomd/iomdreg.h> 49#include <arm/iomd/iomdvar.h> 50#include <dev/podulebus/podulebus.h> 51#include <dev/podulebus/podules.h> 52 53#define WriteByte(a, b) \ 54 *((volatile unsigned char *)(a)) = (b) 55#define ReadByte(a) \ 56 (*((volatile unsigned char *)(a))) 57 58u_int netslotread(u_int, int); 59 60u_int 61netslotread(u_int address, int offset) 62{ 63 static int netslotoffset = -1; 64 65 offset = offset >> 2; 66 if (netslotoffset == -1 || offset < netslotoffset) { 67 WriteByte(address, 0); 68 netslotoffset = 0; 69 } 70 while (netslotoffset < offset) { 71 (void)ReadByte(address); 72 ++netslotoffset; 73 } 74 ++netslotoffset; 75 return(ReadByte(address)); 76} 77 78void 79netslotscan(device_t dev) 80{ 81 podule_t *podule; 82 volatile u_char *address; 83 84 /* Only one netslot atm */ 85 86 /* Reset the address counter */ 87 88 WriteByte(NETSLOT_BASE, 0x00); 89 90 address = (u_char *)NETSLOT_BASE; 91 92 podule = &podules[MAX_PODULES]; 93 94 podule->fast_base = NETSLOT_BASE; 95 podule->medium_base = NETSLOT_BASE; 96 podule->slow_base = NETSLOT_BASE; 97 podule->sync_base = NETSLOT_BASE; 98 podule->mod_base = NETSLOT_BASE; 99 podule->easi_base = 0; 100 podule->attached = 0; 101 podule->slottype = SLOT_NONE; 102 podule->podulenum = MAX_PODULES; 103 podule->interrupt = IRQ_NETSLOT; 104 podule->read_rom = netslotread; 105 podule->dma_channel = -1; 106 podule->dma_interrupt = -1; 107 podule->description[0] = 0; 108 109 /* XXX - Really needs to be linked to a DMA manager */ 110 if (IOMD_ID == RPC600_IOMD_ID) 111 podule->dma_channel = 0; 112 113 /* Get information from the podule header */ 114 115 podule->flags0 = *address; 116 podule->flags1 = *address; 117 podule->reserved = *address; 118 podule->product = *address; 119 podule->product += (*address << 8); 120 podule->manufacturer = *address; 121 podule->manufacturer += (*address << 8); 122 podule->country = *address; 123 if (podule->flags1 & PODULE_FLAGS_IS) { 124 podule->irq_mask = *address; 125 podule->irq_addr = *address; 126 podule->irq_addr += (*address << 8); 127 podule->irq_addr += (*address << 16); 128 podule->irq_addr += podule->slow_base; 129 if (podule->irq_mask == 0) 130 podule->irq_mask = 0x01; 131 podule->fiq_mask = *address; 132 podule->fiq_addr = *address; 133 podule->fiq_addr += (*address << 8); 134 podule->fiq_addr += (*address << 16); 135 podule->fiq_addr += podule->slow_base; 136 if (podule->fiq_mask == 0) 137 podule->fiq_mask = 0x04; 138 } else { 139 podule->irq_addr = podule->slow_base; 140 podule->irq_mask = 0x01; 141 podule->fiq_addr = podule->slow_base; 142 podule->fiq_mask = 0x04; 143 } 144 145 poduleexamine(podule, dev, SLOT_NET); 146} 147 148void 149netslot_ea(uint8_t *buffer) 150{ 151 /* Build station address from machine ID */ 152 buffer[0] = 0x00; 153 buffer[1] = 0x00; 154 buffer[2] = 0xa4; 155 buffer[3] = bootconfig.machine_id[2] + 0x10; 156 buffer[4] = bootconfig.machine_id[1]; 157 buffer[5] = bootconfig.machine_id[0]; 158} 159