/*- * Copyright (c) 1998 Doug Rabson * 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 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 AUTHOR 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. * * $FreeBSD: src/lib/libio/bwx.c,v 1.4.2.1 2000/12/11 01:03:20 obrien Exp $ * $DragonFly: src/lib/libio/Attic/bwx.c,v 1.2 2003/06/17 04:26:49 dillon Exp $ */ #include #include #include #include #include #include #include #include #include #include "io.h" #define mb() __asm__ __volatile__("mb" : : : "memory") #define wmb() __asm__ __volatile__("wmb" : : : "memory") static int mem_fd; /* file descriptor to /dev/mem */ static void *bwx_int1_ports; /* mapped int1 io ports */ static void *bwx_int2_ports; /* mapped int2 io ports */ static void *bwx_int4_ports; /* mapped int4 io ports */ static u_int64_t bwx_io_base; /* physical address of ports */ static u_int64_t bwx_mem_base; /* physical address of bwx mem */ static void bwx_init() { size_t len = sizeof(u_int64_t); int error; mem_fd = open(_PATH_MEM, O_RDWR); if (mem_fd < 0) err(1, _PATH_MEM); bwx_int1_ports = mmap(0, 1L<<32, PROT_READ, MAP_ANON, -1, 0); bwx_int2_ports = mmap(0, 1L<<32, PROT_READ, MAP_ANON, -1, 0); bwx_int4_ports = mmap(0, 1L<<32, PROT_READ, MAP_ANON, -1, 0); if ((error = sysctlbyname("hw.chipset.ports", &bwx_io_base, &len, 0, 0)) < 0) err(1, "hw.chipset.ports"); if ((error = sysctlbyname("hw.chipset.memory", &bwx_mem_base, &len, 0, 0)) < 0) err(1, "hw.chipset.memory"); } static int bwx_ioperm(u_int32_t from, u_int32_t num, int on) { u_int32_t start, end; if (!bwx_int1_ports) bwx_init(); if (!on) return -1; /* XXX can't unmap yet */ start = trunc_page(from); end = round_page(from + num); munmap(bwx_int1_ports + start, end-start); munmap(bwx_int2_ports + start, end-start); munmap(bwx_int4_ports + start, end-start); mmap(bwx_int1_ports + start, end-start, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, bwx_io_base + BWX_EV56_INT1 + start); mmap(bwx_int2_ports + start, end-start, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, bwx_io_base + BWX_EV56_INT2 + start); mmap(bwx_int4_ports + start, end-start, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, bwx_io_base + BWX_EV56_INT4 + start); return 0; } static u_int8_t bwx_inb(u_int32_t port) { mb(); return ldbu((vm_offset_t)bwx_int1_ports + port); } static u_int16_t bwx_inw(u_int32_t port) { mb(); return ldwu((vm_offset_t)bwx_int2_ports + port); } static u_int32_t bwx_inl(u_int32_t port) { mb(); return ldl((vm_offset_t)bwx_int4_ports + port); } static void bwx_outb(u_int32_t port, u_int8_t val) { stb((vm_offset_t)bwx_int1_ports + port, val); wmb(); } static void bwx_outw(u_int32_t port, u_int16_t val) { stw((vm_offset_t)bwx_int2_ports + port, val); wmb(); } static void bwx_outl(u_int32_t port, u_int32_t val) { stl((vm_offset_t)bwx_int4_ports + port, val); wmb(); } struct bwx_mem_handle { void *virt1; /* int1 address in user address-space */ void *virt2; /* int2 address in user address-space */ void *virt4; /* int4 address in user address-space */ }; static void * bwx_map_memory(u_int32_t address, u_int32_t size) { struct bwx_mem_handle *h; h = malloc(sizeof(struct bwx_mem_handle)); if (!h) return 0; h->virt1 = mmap(0, size << 5, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, bwx_mem_base + BWX_EV56_INT1 + address); if ((long) h->virt1 == -1) { free(h); return 0; } h->virt2 = mmap(0, size << 5, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, bwx_mem_base + BWX_EV56_INT2 + address); if ((long) h->virt2 == -1) { munmap(h->virt1, size); free(h); return 0; } h->virt4 = mmap(0, size << 5, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, bwx_mem_base + BWX_EV56_INT4 + address); if ((long) h->virt4 == -1) { munmap(h->virt1, size); munmap(h->virt2, size); free(h); return 0; } return h; } static void bwx_unmap_memory(void *handle, u_int32_t size) { struct bwx_mem_handle *h = handle; munmap(h->virt1, size); munmap(h->virt2, size); munmap(h->virt4, size); free(h); } static u_int8_t bwx_readb(void *handle, u_int32_t offset) { struct bwx_mem_handle *h = handle; return ldbu((vm_offset_t)h->virt1 + offset); } static u_int16_t bwx_readw(void *handle, u_int32_t offset) { struct bwx_mem_handle *h = handle; return ldwu((vm_offset_t)h->virt2 + offset); } static u_int32_t bwx_readl(void *handle, u_int32_t offset) { struct bwx_mem_handle *h = handle; return ldl((vm_offset_t)h->virt4 + offset); } static void bwx_writeb(void *handle, u_int32_t offset, u_int8_t val) { struct bwx_mem_handle *h = handle; stb_nb((vm_offset_t)h->virt1 + offset, val); } static void bwx_writew(void *handle, u_int32_t offset, u_int16_t val) { struct bwx_mem_handle *h = handle; stw_nb((vm_offset_t)h->virt2 + offset, val); } static void bwx_writel(void *handle, u_int32_t offset, u_int32_t val) { struct bwx_mem_handle *h = handle; stl_nb((vm_offset_t)h->virt4 + offset, val); } struct io_ops bwx_io_ops = { bwx_ioperm, bwx_inb, bwx_inw, bwx_inl, bwx_outb, bwx_outw, bwx_outl, bwx_map_memory, bwx_unmap_memory, bwx_readb, bwx_readw, bwx_readl, bwx_writeb, bwx_writew, bwx_writel, };