calmsacibis995
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/**************************************************************************
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* *
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* Copyright (C) 1992-1996, Silicon Graphics, Inc. *
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* *
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* These coded instructions, statements, and computer programs contain *
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* unpublished proprietary information of Silicon Graphics, Inc., and *
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* are protected by Federal copyright law. They may not be disclosed *
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* to third parties or copied or duplicated in any form, in whole or *
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* in part, without the prior written consent of Silicon Graphics, Inc. *
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* *
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**************************************************************************/
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#if defined (SN) && defined (FORCE_ERRORS)
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/*
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* File: error_force.c
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*/
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#include <sys/types.h>
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#include <sys/systm.h>
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#include "sn_private.h"
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#include "error_private.h"
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#include <sys/errno.h>
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#include <sys/cmn_err.h>
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#include <sys/SN/module.h>
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#include <sys/SN/SN0/slotnum.h>
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#include <sys/SN/addrs.h>
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#include <sys/debug.h>
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#include <sys/PCI/bridge.h>
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#include <sys/SN/SN1/snacioregs.h>
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#include <sys/SN/SN0/ip27config.h>
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#include <sys/SN/xbow.h>
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#define EF_LINK_RESET_OFFSET 0x30
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/*
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* Function : error_force_rtr_link_down
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*
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* Purpose : Disable a router link
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* Returns : 0 - succes, -1 - failure
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*/
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int
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error_force_rtr_link_down(cnodeid_t cnode,net_vec_t vec,int port)
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{
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router_reg_t rr_diag_parms;
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int rc = 0;
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EF_PRINT(("Forcing Router link %d down at 0x%x from cnode %d\n",
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port,vec,cnode));
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/* Make sure that we are running on a cpu on the current node */
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if (cnodeid() != cnode) {
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return(-1);
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}
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/* Disable the router port by reading the router
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* diag parameters and setting the disable bit
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*/
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rc = vector_read(vec,0,RR_DIAG_PARMS,&rr_diag_parms);
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if (rc < 0) {
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return(rc);
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}
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rr_diag_parms |= RDPARM_DISABLE(port);
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return vector_write(vec,0,RR_DIAG_PARMS,rr_diag_parms);
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}
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/*
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* Function : error_force_link_reset
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*
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* Purpose : To force a link reset. Ona O2K We reset the link. On a
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* Speedo we reset the entire hub.
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* Returns : 0 - success, -1 - failure
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*/
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int
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error_force_link_reset(ni_error_params_t *params, rval_t *rvp)
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{
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xb_linkregs_t *link_regs = NULL;
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__int64_t ii_ilcsr = 0;
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bridge_t *bridge;
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EF_PRINT(("Made it to ef_link_reset: Node %lld, Port 0x%llx\n",
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params->node, params->port));
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if (!XBOW_WIDGET_IS_VALID(params->port)) {
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printf("Invalid port passed to ef_link_reset: 0x%llx\n",params->port);
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rvp->r_val1 = -1;
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return -1;
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}
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if (!error_force_nodeValid(params->node)) {
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printf("Invalid node passed to ef_link_reset: 0x%lld\n",params->node);
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rvp->r_val1 = -1;
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return -1;
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}
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/* So by now we know we have a legit node and port, it is time to
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reset! */
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if (SN00) {
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ii_ilcsr = REMOTE_HUB_L(params->node,II_ILCSR);
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EF_PRINT(("Read ILCSR, Addr:0x%llx, Val:0x%llx\n",II_ILCSR,ii_ilcsr));
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/* Flip the reset bit */
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ii_ilcsr |= (1 << 8);
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/* Write it back */
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EF_PRINT(("Writing back Val:0x%llx\n",ii_ilcsr));
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REMOTE_HUB_S(params->node, II_ILCSR, ii_ilcsr);
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} else {
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/* First we get the link base */
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link_regs = XBOW_LINKREGS_PTR(params->node,params->port);
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EF_PRINT(("Link Base 0x%llx, writing to 0x%x\n",link_regs,
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&link_regs->link_reset));
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/* Now we write any value to the link_reset register since that will
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issue the reset */
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link_regs->link_reset = 0xb00;
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}
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EF_PRINT(("Link has been Reset\n"));
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bridge =(bridge_t*)(NODE_SWIN_BASE(params->node, params->port));
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if (bridge->b_wid_control & 0xf) {
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EF_PRINT(("Reset is confirmed\n"));
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} else {
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EF_PRINT(("Reset did not occur\n"));
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}
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return 0;
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}
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#endif /* SN0 && FORCE_ERRORS */
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