Current Path : /sys/powerpc/mpc85xx/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/powerpc/mpc85xx/mpc85xx.c |
/*- * Copyright (C) 2008 Semihalf, Rafal Jaworowski * 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 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 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/powerpc/mpc85xx/mpc85xx.c 222428 2011-05-28 19:14:16Z marcel $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/lock.h> #include <sys/mutex.h> #include <sys/rman.h> #include <vm/vm.h> #include <vm/vm_param.h> #include <machine/cpu.h> #include <machine/cpufunc.h> #include <machine/spr.h> #include <powerpc/mpc85xx/mpc85xx.h> /* * MPC85xx system specific routines */ uint32_t ccsr_read4(uintptr_t addr) { volatile uint32_t *ptr = (void *)addr; return (*ptr); } void ccsr_write4(uintptr_t addr, uint32_t val) { volatile uint32_t *ptr = (void *)addr; *ptr = val; __asm __volatile("eieio; sync"); } int law_getmax(void) { uint32_t ver; ver = SVR_VER(mfspr(SPR_SVR)); if (ver == SVR_MPC8555E || ver == SVR_MPC8555) return (8); if (ver == SVR_MPC8548E || ver == SVR_MPC8548 || ver == SVR_MPC8533E || ver == SVR_MPC8533) return (10); return (12); } #define _LAW_SR(trgt,size) (0x80000000 | (trgt << 20) | (ffsl(size) - 2)) #define _LAW_BAR(addr) (addr >> 12) int law_enable(int trgt, u_long addr, u_long size) { uint32_t bar, sr; int i, law_max; law_max = law_getmax(); bar = _LAW_BAR(addr); sr = _LAW_SR(trgt, size); /* Bail if already programmed. */ for (i = 0; i < law_max; i++) if (sr == ccsr_read4(OCP85XX_LAWSR(i)) && bar == ccsr_read4(OCP85XX_LAWBAR(i))) return (0); /* Find an unused access window. */ for (i = 0; i < law_max; i++) if ((ccsr_read4(OCP85XX_LAWSR(i)) & 0x80000000) == 0) break; if (i == law_max) return (ENOSPC); ccsr_write4(OCP85XX_LAWBAR(i), bar); ccsr_write4(OCP85XX_LAWSR(i), sr); return (0); } int law_disable(int trgt, u_long addr, u_long size) { uint32_t bar, sr; int i, law_max; law_max = law_getmax(); bar = _LAW_BAR(addr); sr = _LAW_SR(trgt, size); /* Find and disable requested LAW. */ for (i = 0; i < law_max; i++) if (sr == ccsr_read4(OCP85XX_LAWSR(i)) && bar == ccsr_read4(OCP85XX_LAWBAR(i))) { ccsr_write4(OCP85XX_LAWBAR(i), 0); ccsr_write4(OCP85XX_LAWSR(i), 0); return (0); } return (ENOENT); } int law_pci_target(struct resource *res, int *trgt_mem, int *trgt_io) { u_long start; uint32_t ver; int trgt, rv; ver = SVR_VER(mfspr(SPR_SVR)); start = rman_get_start(res) & 0xf000; rv = 0; trgt = -1; switch (start) { case 0x8000: trgt = 0; break; case 0x9000: trgt = 1; break; case 0xa000: if (ver == SVR_MPC8548E || ver == SVR_MPC8548) trgt = 3; else trgt = 2; break; case 0xb000: if (ver == SVR_MPC8548E || ver == SVR_MPC8548) rv = EINVAL; else trgt = 3; break; default: rv = ENXIO; } *trgt_mem = *trgt_io = trgt; return (rv); }