1/* $NetBSD: i80321_space.c,v 1.6 2003/10/06 15:43:35 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * bus_space functions for i81342 I/O Processor. 40 */ 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD$"); 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/bus.h> 48#include <sys/malloc.h> 49 50#include <machine/pcb.h> 51 52#include <vm/vm.h> 53#include <vm/vm_kern.h> 54#include <vm/pmap.h> 55#include <vm/vm_page.h> 56#include <vm/vm_extern.h> 57 58#include <machine/bus.h> 59 60#include <arm/xscale/i8134x/i81342reg.h> 61#include <arm/xscale/i8134x/i81342var.h> 62 63/* Prototypes for all the bus_space structure functions */ 64bs_protos(i81342); 65bs_protos(i81342_io); 66bs_protos(i81342_mem); 67 68void 69i81342_bs_init(bus_space_tag_t bs, void *cookie) 70{ 71 72 *bs = *arm_base_bs_tag; 73 bs->bs_privdata = cookie; 74} 75 76void 77i81342_io_bs_init(bus_space_tag_t bs, void *cookie) 78{ 79 80 *bs = *arm_base_bs_tag; 81 bs->bs_privdata = cookie; 82 83 bs->bs_map = i81342_io_bs_map; 84 bs->bs_unmap = i81342_io_bs_unmap; 85 bs->bs_alloc = i81342_io_bs_alloc; 86 bs->bs_free = i81342_io_bs_free; 87 88} 89 90void 91i81342_mem_bs_init(bus_space_tag_t bs, void *cookie) 92{ 93 94 *bs = *arm_base_bs_tag; 95 bs->bs_privdata = cookie; 96 97 bs->bs_map = i81342_mem_bs_map; 98 bs->bs_unmap = i81342_mem_bs_unmap; 99 bs->bs_alloc = i81342_mem_bs_alloc; 100 bs->bs_free = i81342_mem_bs_free; 101 102} 103 104/* *** Routines shared by i81342, PCI IO, and PCI MEM. *** */ 105 106int 107i81342_bs_subregion(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, 108 bus_size_t size, bus_space_handle_t *nbshp) 109{ 110 111 *nbshp = bsh + offset; 112 return (0); 113} 114 115void 116i81342_bs_barrier(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, 117 bus_size_t len, int flags) 118{ 119 120 /* Nothing to do. */ 121} 122 123/* *** Routines for PCI IO. *** */ 124 125int 126i81342_io_bs_map(bus_space_tag_t tag, bus_addr_t bpa, bus_size_t size, int flags, 127 bus_space_handle_t *bshp) 128{ 129 130 *bshp = bpa; 131 return (0); 132} 133 134void 135i81342_io_bs_unmap(bus_space_tag_t tag, bus_space_handle_t h, bus_size_t size) 136{ 137 138 /* Nothing to do. */ 139} 140 141int 142i81342_io_bs_alloc(bus_space_tag_t tag, bus_addr_t rstart, bus_addr_t rend, 143 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 144 bus_addr_t *bpap, bus_space_handle_t *bshp) 145{ 146 147 panic("i81342_io_bs_alloc(): not implemented"); 148} 149 150void 151i81342_io_bs_free(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size) 152{ 153 154 panic("i81342_io_bs_free(): not implemented"); 155} 156 157 158/* *** Routines for PCI MEM. *** */ 159extern int badaddr_read(void *, int, void *); 160static vm_offset_t allocable = 0xe1000000; 161int 162i81342_mem_bs_map(bus_space_tag_t tag, bus_addr_t bpa, bus_size_t size, int flags, 163 bus_space_handle_t *bshp) 164{ 165 struct i81342_pci_softc *sc = (struct i81342_pci_softc *)tag->bs_privdata; 166 struct i81342_pci_map *tmp; 167 vm_offset_t addr, endaddr; 168 vm_paddr_t paddr; 169 170 /* Lookup to see if we already have a mapping at this address. */ 171 tmp = sc->sc_pci_mappings; 172 while (tmp) { 173 if (tmp->paddr <= bpa && tmp->paddr + tmp->size > 174 bpa + size) { 175 *bshp = bpa - tmp->paddr + tmp->vaddr; 176 return (0); 177 } 178 tmp = tmp->next; 179 } 180 addr = allocable; 181 endaddr = rounddown2(addr + size, 0x1000000) + 0x1000000; 182 if (endaddr >= IOP34X_VADDR) 183 panic("PCI virtual memory exhausted"); 184 allocable = endaddr; 185 tmp = malloc(sizeof(*tmp), M_DEVBUF, M_WAITOK); 186 tmp->next = NULL; 187 paddr = rounddown2(bpa, 0x100000); 188 tmp->paddr = paddr; 189 tmp->vaddr = addr; 190 tmp->size = 0; 191 while (addr < endaddr) { 192 pmap_kenter_supersection(addr, paddr + (sc->sc_is_atux ? 193 IOP34X_PCIX_OMBAR : IOP34X_PCIE_OMBAR), 0); 194 addr += 0x1000000; 195 paddr += 0x1000000; 196 tmp->size += 0x1000000; 197 } 198 tmp->next = sc->sc_pci_mappings; 199 sc->sc_pci_mappings = tmp; 200 *bshp = bpa - tmp->paddr + tmp->vaddr; 201 return (0); 202} 203 204void 205i81342_mem_bs_unmap(bus_space_tag_t tag, bus_space_handle_t h, bus_size_t size) 206{ 207#if 0 208 vm_offset_t va, endva; 209 210 va = trunc_page((vm_offset_t)h); 211 endva = va + round_page(size); 212 213 /* Free the kernel virtual mapping. */ 214 kva_free(va, endva - va); 215#endif 216} 217 218int 219i81342_mem_bs_alloc(bus_space_tag_t tag, bus_addr_t rstart, bus_addr_t rend, 220 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 221 bus_addr_t *bpap, bus_space_handle_t *bshp) 222{ 223 224 panic("i81342_mem_bs_alloc(): not implemented"); 225} 226 227void 228i81342_mem_bs_free(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size) 229{ 230 231 panic("i81342_mem_bs_free(): not implemented"); 232} 233