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/*
*
* smapi.c -- SMAPI interface routines
*
*
* Written By: Mike Sullivan IBM Corporation
*
* Copyright (C) 1999 IBM Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement, including but not limited to
* the risks and costs of program errors, damage to or loss of data,
* programs or equipment, and unavailability or interruption of operations.
*
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), 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 OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*
* 10/23/2000 - Alpha Release
* First release to the public
*/
#include <linux/kernel.h>
#include <linux/mc146818rtc.h> /* CMOS defines */
#include "smapi.h"
#include "mwavedd.h"
static unsigned short g_usSmapiPort = 0;
static int smapi_request(unsigned short inBX, unsigned short inCX,
unsigned short inDI, unsigned short inSI,
unsigned short *outAX, unsigned short *outBX,
unsigned short *outCX, unsigned short *outDX,
unsigned short *outDI, unsigned short *outSI)
{
unsigned short myoutAX = 2, *pmyoutAX = &myoutAX;
unsigned short myoutBX = 3, *pmyoutBX = &myoutBX;
unsigned short myoutCX = 4, *pmyoutCX = &myoutCX;
unsigned short myoutDX = 5, *pmyoutDX = &myoutDX;
unsigned short myoutDI = 6, *pmyoutDI = &myoutDI;
unsigned short myoutSI = 7, *pmyoutSI = &myoutSI;
unsigned short usSmapiOK = -EIO, *pusSmapiOK = &usSmapiOK;
unsigned int inBXCX = (inBX << 16) | inCX;
unsigned int inDISI = (inDI << 16) | inSI;
int retval = 0;
PRINTK_5(TRACE_SMAPI, "inBX %x inCX %x inDI %x inSI %x\n",
inBX, inCX, inDI, inSI);
__asm__ __volatile__("movw $0x5380,%%ax\n\t"
"movl %7,%%ebx\n\t"
"shrl $16, %%ebx\n\t"
"movw %7,%%cx\n\t"
"movl %8,%%edi\n\t"
"shrl $16,%%edi\n\t"
"movw %8,%%si\n\t"
"movw %9,%%dx\n\t"
"out %%al,%%dx\n\t"
"out %%al,$0x4F\n\t"
"cmpb $0x53,%%ah\n\t"
"je 2f\n\t"
"1:\n\t"
"orb %%ah,%%ah\n\t"
"jnz 2f\n\t"
"movw %%ax,%0\n\t"
"movw %%bx,%1\n\t"
"movw %%cx,%2\n\t"
"movw %%dx,%3\n\t"
"movw %%di,%4\n\t"
"movw %%si,%5\n\t"
"movw $1,%6\n\t"
"2:\n\t":"=m"(*(unsigned short *) pmyoutAX),
"=m"(*(unsigned short *) pmyoutBX),
"=m"(*(unsigned short *) pmyoutCX),
"=m"(*(unsigned short *) pmyoutDX),
"=m"(*(unsigned short *) pmyoutDI),
"=m"(*(unsigned short *) pmyoutSI),
"=m"(*(unsigned short *) pusSmapiOK)
:"m"(inBXCX), "m"(inDISI), "m"(g_usSmapiPort)
:"%eax", "%ebx", "%ecx", "%edx", "%edi",
"%esi");
PRINTK_8(TRACE_SMAPI,
"myoutAX %x myoutBX %x myoutCX %x myoutDX %x myoutDI %x myoutSI %x usSmapiOK %x\n",
myoutAX, myoutBX, myoutCX, myoutDX, myoutDI, myoutSI,
usSmapiOK);
*outAX = myoutAX;
*outBX = myoutBX;
*outCX = myoutCX;
*outDX = myoutDX;
*outDI = myoutDI;
*outSI = myoutSI;
retval = (usSmapiOK == 1) ? 0 : -EIO;
PRINTK_2(TRACE_SMAPI, "smapi::smapi_request exit retval %x\n", retval);
return retval;
}
int smapi_query_DSP_cfg(SMAPI_DSP_SETTINGS * pSettings)
{
int bRC = -EIO;
unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
static const unsigned short ausDspBases[] = {
0x0030, 0x4E30, 0x8E30, 0xCE30,
0x0130, 0x0350, 0x0070, 0x0DB0 };
static const unsigned short ausUartBases[] = {
0x03F8, 0x02F8, 0x03E8, 0x02E8 };
PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg entry\n");
bRC = smapi_request(0x1802, 0x0000, 0, 0,
&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
if (bRC) {
PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Error: Could not get DSP Settings. Aborting.\n");
return bRC;
}
PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg, smapi_request OK\n");
pSettings->bDSPPresent = ((usBX & 0x0100) != 0);
pSettings->bDSPEnabled = ((usCX & 0x0001) != 0);
pSettings->usDspIRQ = usSI & 0x00FF;
pSettings->usDspDMA = (usSI & 0xFF00) >> 8;
if ((usDI & 0x00FF) < ARRAY_SIZE(ausDspBases)) {
pSettings->usDspBaseIO = ausDspBases[usDI & 0x00FF];
} else {
pSettings->usDspBaseIO = 0;
}
PRINTK_6(TRACE_SMAPI,
"smapi::smapi_query_DSP_cfg get DSP Settings bDSPPresent %x bDSPEnabled %x usDspIRQ %x usDspDMA %x usDspBaseIO %x\n",
pSettings->bDSPPresent, pSettings->bDSPEnabled,
pSettings->usDspIRQ, pSettings->usDspDMA,
pSettings->usDspBaseIO);
/* check for illegal values */
if ( pSettings->usDspBaseIO == 0 )
PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: DSP base I/O address is 0\n");
if ( pSettings->usDspIRQ == 0 )
PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: DSP IRQ line is 0\n");
bRC = smapi_request(0x1804, 0x0000, 0, 0,
&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
if (bRC) {
PRINTK_ERROR("smapi::smapi_query_DSP_cfg: Error: Could not get DSP modem settings. Aborting.\n");
return bRC;
}
PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg, smapi_request OK\n");
pSettings->bModemEnabled = ((usCX & 0x0001) != 0);
pSettings->usUartIRQ = usSI & 0x000F;
if (((usSI & 0xFF00) >> 8) < ARRAY_SIZE(ausUartBases)) {
pSettings->usUartBaseIO = ausUartBases[(usSI & 0xFF00) >> 8];
} else {
pSettings->usUartBaseIO = 0;
}
PRINTK_4(TRACE_SMAPI,
"smapi::smapi_query_DSP_cfg get DSP modem settings bModemEnabled %x usUartIRQ %x usUartBas
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