// SPDX-License-Identifier: GPL-2.0
/*
* Linux for s390 qdio support, buffer handling, qdio API and module support.
*
* Copyright IBM Corp. 2000, 2008
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>
* Jan Glauber <jang@linux.vnet.ibm.com>
* 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kmemleak.h>
#include <linux/delay.h>
#include <linux/gfp.h>
#include <linux/io.h>
#include <linux/atomic.h>
#include <asm/debug.h>
#include <asm/qdio.h>
#include <asm/ipl.h>
#include "cio.h"
#include "css.h"
#include "device.h"
#include "qdio.h"
#include "qdio_debug.h"
MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>,"\
"Jan Glauber <jang@linux.vnet.ibm.com>");
MODULE_DESCRIPTION("QDIO base support");
MODULE_LICENSE("GPL");
static inline int do_siga_sync(unsigned long schid,
unsigned long out_mask, unsigned long in_mask,
unsigned int fc)
{
int cc;
asm volatile(
" lgr 0,%[fc]\n"
" lgr 1,%[schid]\n"
" lgr 2,%[out]\n"
" lgr 3,%[in]\n"
" siga 0\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (cc)
: [fc] "d" (fc), [schid] "d" (schid),
[out] "d" (out_mask), [in] "d" (in_mask)
: "cc", "0", "1", "2", "3");
return cc;
}
static inline int do_siga_input(unsigned long schid, unsigned long mask,
unsigned long fc)
{
int cc;
asm volatile(
" lgr 0,%[fc]\n"
" lgr 1,%[schid]\n"
" lgr 2,%[mask]\n"
" siga 0\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (cc)
: [fc] "d" (fc), [schid