promif_io.c revision de81a4f48d467f6d0263221cbf4a199b6a925948
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/*
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * CDDL HEADER START
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * The contents of this file are subject to the terms of the
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Common Development and Distribution License (the "License").
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * You may not use this file except in compliance with the License.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * or http://www.opensolaris.org/os/licensing.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * See the License for the specific language governing permissions
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * and limitations under the License.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * When distributing Covered Code, include this CDDL HEADER in each
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * If applicable, add the following below this CDDL HEADER, with the
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * fields enclosed by brackets "[]" replaced with your own identifying
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * information: Portions Copyright [yyyy] [name of copyright owner]
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * CDDL HEADER END
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/*
de81a4f48d467f6d0263221cbf4a199b6a925948jm * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Use is subject to license terms.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#pragma ident "%Z%%M% %I% %E% SMI"
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/promif_impl.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/systm.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/hypervisor_api.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#ifndef _KMDB
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/kmem.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#endif
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#define PROM_REG_TO_UNIT_ADDR(r) ((r) & ~(0xful << 28))
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppostatic pnode_t instance_to_package(ihandle_t ih);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* cached copies of IO params */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppostatic phandle_t pstdin;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppostatic phandle_t pstdout;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppostatic ihandle_t istdin;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppostatic ihandle_t istdout;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoint
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppopromif_instance_to_package(void *p)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo cell_t *ci = (cell_t *)p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ihandle_t ih;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo phandle_t ph;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ih = p1275_cell2ihandle(ci[3]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ph = instance_to_package(ih);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ci[4] = p1275_phandle2cell(ph);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (0);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoint
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppopromif_write(void *p)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo cell_t *ci = (cell_t *)p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo uint_t fd;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo char *buf;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo size_t len;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo size_t rlen;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ASSERT(ci[1] == 3);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo fd = p1275_cell2uint(ci[3]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo buf = p1275_cell2ptr(ci[4]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo len = p1275_cell2size(ci[5]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* only support stdout (console) */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ASSERT(fd == istdout);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo for (rlen = 0; rlen < len; rlen++) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (hv_cnputchar((uint8_t)buf[rlen]) == H_EWOULDBLOCK)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* try forever */;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* return the length written */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ci[6] = p1275_size2cell(rlen);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (0);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoint
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppopromif_read(void *p)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo cell_t *ci = (cell_t *)p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo uint_t fd;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo char *buf;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo size_t len;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo size_t rlen;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ASSERT(ci[1] == 3);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* unpack arguments */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo fd = p1275_cell2uint(ci[3]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo buf = p1275_cell2ptr(ci[4]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo len = p1275_cell2size(ci[5]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* only support stdin (console) */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ASSERT(fd == istdin);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo for (rlen = 0; rlen < len; rlen++) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (hv_cngetchar((uint8_t *)&buf[rlen]) != H_EOK)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo break;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* return the length read */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ci[6] = p1275_size2cell(rlen);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (0);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppostatic pnode_t
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoinstance_to_package(ihandle_t ih)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* only support stdin and stdout */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ASSERT((ih == istdin) || (ih == istdout));
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (ih == istdin)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (pstdin);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (ih == istdout)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (pstdout);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (OBP_BADNODE);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#ifdef _KMDB
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovoid
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppopromif_io_init(ihandle_t in, ihandle_t out, phandle_t pin, phandle_t pout)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo istdin = in;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo istdout = out;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo pstdin = pin;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo pstdout = pout;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#else
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovoid
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppopromif_io_init(void)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /*
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Cache the mapping between the stdin and stdout
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * ihandles and their respective phandles.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo pstdin = prom_stdin_node();
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo pstdout = prom_stdout_node();
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo istdin = prom_stdin_ihandle();
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo istdout = prom_stdout_ihandle();
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoint
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppopromif_instance_to_path(void *p)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo cell_t *ci = (cell_t *)p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo pnode_t node;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ihandle_t ih;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo char *buf;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo int rlen;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo char *regval;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo uint_t *csaddr;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo char name[OBP_MAXPROPNAME];
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo char scratch[OBP_MAXPATHLEN];
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo int rvlen;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ih = p1275_cell2ihandle(ci[3]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo buf = p1275_cell2ptr(ci[4]);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ci[6] = p1275_uint2cell(0);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo node = instance_to_package(ih);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *buf = '\0';
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (node != prom_rootnode()) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (prom_getprop(node, OBP_NAME, name) == -1) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo prom_printf("instance_to_path: no name property "
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo "node=0x%x\n", node);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (-1);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* construct the unit address from the 'reg' property */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if ((rlen = prom_getproplen(node, OBP_REG)) == -1)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (-1);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
a47315d76ac34b1416ba8bd333c4d3b7ee54a56bjm /*
a47315d76ac34b1416ba8bd333c4d3b7ee54a56bjm * Make sure we don't get dispatched onto a different
a47315d76ac34b1416ba8bd333c4d3b7ee54a56bjm * cpu if we happen to sleep. See kern_postprom().
a47315d76ac34b1416ba8bd333c4d3b7ee54a56bjm */
de81a4f48d467f6d0263221cbf4a199b6a925948jm thread_affinity_set(curthread, CPU->cpu_id);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo regval = kmem_zalloc(rlen, KM_SLEEP);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo (void) prom_getprop(node, OBP_REG, regval);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo csaddr = (uint_t *)regval;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo (void) prom_sprintf(scratch, "/%s@%lx%s", name,
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo PROM_REG_TO_UNIT_ADDR(*csaddr), buf);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo kmem_free(regval, rlen);
de81a4f48d467f6d0263221cbf4a199b6a925948jm thread_affinity_clear(curthread);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo (void) prom_strcpy(buf, scratch);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo node = prom_parentnode(node);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo rvlen = prom_strlen(buf);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo ci[6] = p1275_uint2cell(rvlen);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (0);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#endif /* _KMDB */