25cf1a301a396c38e8adf52c15f537b80d2483f7jl/*
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * CDDL HEADER START
25cf1a301a396c38e8adf52c15f537b80d2483f7jl *
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * The contents of this file are subject to the terms of the
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * Common Development and Distribution License (the "License").
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * You may not use this file except in compliance with the License.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl *
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * or http://www.opensolaris.org/os/licensing.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * See the License for the specific language governing permissions
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * and limitations under the License.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl *
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * When distributing Covered Code, include this CDDL HEADER in each
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * If applicable, add the following below this CDDL HEADER, with the
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * fields enclosed by brackets "[]" replaced with your own identifying
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * information: Portions Copyright [yyyy] [name of copyright owner]
25cf1a301a396c38e8adf52c15f537b80d2483f7jl *
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * CDDL HEADER END
25cf1a301a396c38e8adf52c15f537b80d2483f7jl */
25cf1a301a396c38e8adf52c15f537b80d2483f7jl/*
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * Use is subject to license terms.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl */
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl/*
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * CPU-specific functions needed by the Kernel-Debugger Interface (KDI). These
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * functions are invoked directly by the kernel debugger (kmdb) while the system
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * has been stopped, and as such must not use any kernel facilities that block
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * or otherwise rely on forward progress by other parts of the kernel.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl *
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * These functions may also be called before unix`_start, and as such cannot
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * use any kernel facilities that must be initialized as part of system start.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * An example of such a facility is drv_usecwait(), which relies on a parameter
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * that is initialized by the unix module. As a result, drv_usecwait() may not
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * be used by KDI functions.
25cf1a301a396c38e8adf52c15f537b80d2483f7jl */
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/types.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/systm.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/archsystm.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/machsystm.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/cpu_module.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/xc_impl.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/intreg.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl#include <sys/kdi_impl.h>
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl/*
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * We keep our own copies, used for cache flushing, because we can be called
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * before cpu_fiximpl().
25cf1a301a396c38e8adf52c15f537b80d2483f7jl */
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic int kdi_dcache_size;
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic int kdi_dcache_linesize;
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic int kdi_icache_size;
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic int kdi_icache_linesize;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl/*
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * Assembly support for SPARC64-VI modules in opl_olympus_asm.s
25cf1a301a396c38e8adf52c15f537b80d2483f7jl */
25cf1a301a396c38e8adf52c15f537b80d2483f7jlextern int idsr_busy(void);
25cf1a301a396c38e8adf52c15f537b80d2483f7jlextern void init_mondo_nocheck(xcfunc_t *func, uint64_t arg1, uint64_t arg2);
25cf1a301a396c38e8adf52c15f537b80d2483f7jlextern void shipit(int, int);
25cf1a301a396c38e8adf52c15f537b80d2483f7jlextern void kdi_flush_idcache(int, int, int, int);
25cf1a301a396c38e8adf52c15f537b80d2483f7jlextern int kdi_get_stick(uint64_t *);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
8682d1ef2a0960ed5a9f05b9448eaa3e68ac931fRichard Lowestatic void kdi_tickwait(clock_t);
8682d1ef2a0960ed5a9f05b9448eaa3e68ac931fRichard Lowe
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic int
25cf1a301a396c38e8adf52c15f537b80d2483f7jlkdi_cpu_ready_iter(int (*cb)(int, void *), void *arg)
25cf1a301a396c38e8adf52c15f537b80d2483f7jl{
25cf1a301a396c38e8adf52c15f537b80d2483f7jl int rc, i;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl for (rc = 0, i = 0; i < NCPU; i++) {
25cf1a301a396c38e8adf52c15f537b80d2483f7jl if (CPU_IN_SET(cpu_ready_set, i))
25cf1a301a396c38e8adf52c15f537b80d2483f7jl rc += cb(i, arg);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl }
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl return (rc);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl}
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl/*
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * Sends a cross-call to a specified processor. The caller assumes
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * responsibility for repetition of cross-calls, as appropriate (MARSA for
25cf1a301a396c38e8adf52c15f537b80d2483f7jl * debugging).
25cf1a301a396c38e8adf52c15f537b80d2483f7jl */
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic int
25cf1a301a396c38e8adf52c15f537b80d2483f7jlkdi_xc_one(int cpuid, void (*func)(uintptr_t, uintptr_t), uintptr_t arg1,
25cf1a301a396c38e8adf52c15f537b80d2483f7jl uintptr_t arg2)
25cf1a301a396c38e8adf52c15f537b80d2483f7jl{
25cf1a301a396c38e8adf52c15f537b80d2483f7jl uint64_t idsr;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl uint64_t endtick, tick;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl init_mondo_nocheck((xcfunc_t *)func, arg1, arg2);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl shipit(cpuid, 0);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl /* Spin for at most 1 second for checking */
25cf1a301a396c38e8adf52c15f537b80d2483f7jl endtick = gettick() + (uint64_t)sys_tick_freq;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl idsr = getidsr();
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl if (idsr & IDSR_BUSY) {
25cf1a301a396c38e8adf52c15f537b80d2483f7jl do {
25cf1a301a396c38e8adf52c15f537b80d2483f7jl idsr = getidsr();
25cf1a301a396c38e8adf52c15f537b80d2483f7jl tick = gettick();
25cf1a301a396c38e8adf52c15f537b80d2483f7jl if (tick > endtick) {
25cf1a301a396c38e8adf52c15f537b80d2483f7jl return (KDI_XC_RES_BUSY);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl }
25cf1a301a396c38e8adf52c15f537b80d2483f7jl } while (idsr & IDSR_BUSY);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl }
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi_tickwait(20000);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl if (idsr & IDSR_NACK)
25cf1a301a396c38e8adf52c15f537b80d2483f7jl return (KDI_XC_RES_NACK);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl else
25cf1a301a396c38e8adf52c15f537b80d2483f7jl return (KDI_XC_RES_OK);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl}
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic void
25cf1a301a396c38e8adf52c15f537b80d2483f7jlkdi_tickwait(clock_t nticks)
25cf1a301a396c38e8adf52c15f537b80d2483f7jl{
25cf1a301a396c38e8adf52c15f537b80d2483f7jl clock_t endtick = gettick() + nticks;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
8682d1ef2a0960ed5a9f05b9448eaa3e68ac931fRichard Lowe while (gettick() < endtick)
8682d1ef2a0960ed5a9f05b9448eaa3e68ac931fRichard Lowe ;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl}
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jlstatic void
25cf1a301a396c38e8adf52c15f537b80d2483f7jlkdi_cpu_init(int dcache_size, int dcache_linesize, int icache_size,
25cf1a301a396c38e8adf52c15f537b80d2483f7jl int icache_linesize)
25cf1a301a396c38e8adf52c15f537b80d2483f7jl{
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi_dcache_size = dcache_size;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi_dcache_linesize = dcache_linesize;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi_icache_size = icache_size;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi_icache_linesize = icache_linesize;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl}
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jl/* used directly by kdi_read/write_phys */
25cf1a301a396c38e8adf52c15f537b80d2483f7jlvoid
25cf1a301a396c38e8adf52c15f537b80d2483f7jlkdi_flush_caches(void)
25cf1a301a396c38e8adf52c15f537b80d2483f7jl{
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi_flush_idcache(kdi_dcache_size, kdi_dcache_linesize,
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi_icache_size, kdi_icache_linesize);
25cf1a301a396c38e8adf52c15f537b80d2483f7jl}
25cf1a301a396c38e8adf52c15f537b80d2483f7jl
25cf1a301a396c38e8adf52c15f537b80d2483f7jlvoid
25cf1a301a396c38e8adf52c15f537b80d2483f7jlcpu_kdi_init(kdi_t *kdi)
25cf1a301a396c38e8adf52c15f537b80d2483f7jl{
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi->kdi_flush_caches = kdi_flush_caches;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi->mkdi_cpu_init = kdi_cpu_init;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi->mkdi_cpu_ready_iter = kdi_cpu_ready_iter;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi->mkdi_xc_one = kdi_xc_one;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi->mkdi_tickwait = kdi_tickwait;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl kdi->mkdi_get_stick = kdi_get_stick;
25cf1a301a396c38e8adf52c15f537b80d2483f7jl}