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nut/drivers/mge-shut.c
Arnaud Quette fefe62b2bd Imported Upstream version 2.6.4
2012-06-01 15:55:19 +02:00

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/* mge-shut.c - monitor MGE UPS for NUT with SHUT protocol
*
* Copyright (C) 2002 - 2012
* Arnaud Quette <arnaud.quette@gmail.com>
*
* Sponsored by MGE UPS SYSTEMS <http://opensource.mgeups.com/>
*
* 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.
*
* 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
*
*/
#include <string.h>
#include "config.h"
#include "main.h"
#include "serial.h"
#include "timehead.h"
#include "mge-shut.h"
#include "hidparser.h"
#include "hidtypes.h"
#include "common.h" /* for upsdebugx() etc */
/* --------------------------------------------------------------- */
/* Define "technical" constants */
/* --------------------------------------------------------------- */
#define DRIVER_NAME "Eaton / SHUT driver"
#define DRIVER_VERSION "0.70"
/* driver description structure */
upsdrv_info_t upsdrv_info = {
DRIVER_NAME,
DRIVER_VERSION,
"Arnaud Quette <ArnaudQuette@Eaton.com>",
DRV_STABLE,
{ NULL }
};
#define MAX_TRY 4
/* global variables */
int commstatus = 0;
int lowbatt = -1;
int ondelay = DEFAULT_ONDELAY;
int offdelay = DEFAULT_OFFDELAY;
int notification = DEFAULT_NOTIFICATION;
#define SD_RETURN 0
#define SD_STAYOFF 1
int sdtype = SD_RETURN;
#define BYTESWAP(in) (((in & 0xFF) << 8) + ((in & 0xFF00) >> 8))
/* realign packet data according to Endianess */
static void align_request(hid_packet_t *sd)
{
#if WORDS_BIGENDIAN
/* Sparc/Mips/... are big endian, USB/SHUT little endian */
(*sd).wValue = BYTESWAP((*sd).wValue);
(*sd).wIndex = BYTESWAP((*sd).wIndex);
(*sd).wLength = BYTESWAP((*sd).wLength);
#endif
}
/* --------------------------------------------------------------- */
/* Global structures */
/* --------------------------------------------------------------- */
hid_desc_data_t hid_descriptor;
device_desc_data_t device_descriptor;
static long hValue;
static HIDDesc_t *pDesc = NULL; /* parsed Report Descriptor */
u_char raw_buf[4096];
/* --------------------------------------------------------------- */
/* Function prototypes */
/* --------------------------------------------------------------- */
float expo(int a, int b);
extern long FormatValue(long Value, u_char Size);
static const char *hu_find_infoval(info_lkp_t *hid2info, long value);
/* --------------------------------------------------------------- */
/* UPS Driver Functions */
/* --------------------------------------------------------------- */
void upsdrv_initinfo (void)
{
mge_info_item_t *item;
upsdebugx(2, "entering initinfo()\n");
/* Get complete Model information */
shut_identify_ups ();
printf("Detected %s [%s] on %s\n", dstate_getinfo("ups.model"),
dstate_getinfo("ups.serial"), device_path);
/* Device capabilities enumeration ----------------------------- */
for ( item = mge_info ; item->type != NULL ; item++ ) {
/* Check if we are asked to stop (reactivity++) */
if (exit_flag != 0)
return;
/* avoid redundancy when multiple defines (RO/RW) */
if (dstate_getinfo(item->type) != NULL)
continue;
/* Special case for handling server side variables */
if (item->shut_flags & SHUT_FLAG_ABSENT) {
/* Check if exists (if necessary) before creation */
if (item->item_path != NULL)
{
if (hid_get_value(item->item_path) != 1 )
continue;
}
else
{
/* Simply set the default value */
dstate_setinfo(item->type, "%s", item->dfl);
dstate_setflags(item->type, item->flags);
continue;
}
dstate_setinfo(item->type, "%s", item->dfl);
dstate_setflags(item->type, item->flags);
/* Set max length for strings, if needed */
if (item->flags & ST_FLAG_STRING)
dstate_setaux(item->type, item->length);
/* disable reading now
item->shut_flags &= ~SHUT_FLAG_OK;*/
} else {
if (hid_get_value(item->item_path) != 0 ) {
item->shut_flags &= SHUT_FLAG_OK;
dstate_setinfo(item->type, item->fmt, hValue);
dstate_setflags(item->type, item->flags);
/* Set max length for strings */
if (item->flags & ST_FLAG_STRING)
dstate_setaux(item->type, item->length);
}
else {
item->shut_flags &= ~SHUT_FLAG_OK;
}
}
}
/* commands ----------------------------------------------- */
dstate_addcmd("load.off");
dstate_addcmd("load.on");
dstate_addcmd("shutdown.return");
dstate_addcmd("shutdown.stayoff");
dstate_addcmd("test.battery.start");
dstate_addcmd("test.battery.stop");
/* install handlers */
upsh.setvar = hid_set_value; /* setvar; */
upsh.instcmd = instcmd;
/* check if low battery level has been given to set it */
if (lowbatt != -1) {
hid_set_value("battery.charge.low", getval ("lowbatt"));
}
}
/* --------------------------------------------------------------- */
void upsdrv_updateinfo (void)
{
mge_info_item_t *item;
const char *nutvalue;
upsdebugx(2, "entering upsdrv_updateinfo()");
if (commstatus == 0) {
if (shut_ups_start () != 0) {
upsdebugx(2, "No communication with UPS, retrying");
dstate_datastale();
return;
} else {
upsdebugx(2, "Communication with UPS established");
}
}
shut_ups_status();
/* Device data walk ----------------------------- */
for ( item = mge_info ; item->type != NULL; item++ ) {
/* Check if we are asked to stop (reactivity++) */
if (exit_flag != 0)
return;
if (item->shut_flags & SHUT_FLAG_ABSENT)
continue;
if (item->shut_flags & SHUT_FLAG_OK) {
if(hid_get_value(item->item_path) != 0 ) {
upsdebugx(3, "%s: hValue = %ld", item->item_path, hValue);
/* upsdebugx(3, "%s: hValue = %ld (%ld)",
item->item_path, hValue, hData.LogMax); */
/* need lookup'ed translation */
if (item->hid2info != NULL)
{
nutvalue = hu_find_infoval(item->hid2info, (long)hValue);
if (nutvalue != NULL)
dstate_setinfo(item->type, "%s", nutvalue);
else
dstate_setinfo(item->type, item->fmt, hValue);
}
else
dstate_setinfo(item->type, item->fmt, hValue);
dstate_dataok();
} else {
if (shut_ups_start () != 0)
dstate_datastale();
}
}
}
}
/* --------------------------------------------------------------- */
void upsdrv_shutdown (void)
{
char val[5];
if (sdtype == SD_RETURN) {
/* set DelayBeforeStartup */
snprintf(val, sizeof(val), "%d", ondelay);
hid_set_value("ups.timer.start", val);
}
/* set DelayBeforeShutdown */
snprintf(val, sizeof(val), "%d", offdelay);
hid_set_value("ups.timer.shutdown", val);
}
/* --------------------------------------------------------------- */
void upsdrv_help (void)
{
upsdebugx(2, "entering upsdrv_help");
}
/* --------------------------------------------------------------- */
/* list flags and values that you want to receive via -x */
void upsdrv_makevartable (void)
{
char msg[MAX_STRING];
upsdebugx (2, "entering upsdrv_makevartable()");
snprintf(msg, sizeof(msg), "Set low battery level, in %% (default=%d).",
DEFAULT_LOWBATT);
addvar (VAR_VALUE, "lowbatt", msg);
snprintf(msg, sizeof(msg), "Set shutdown delay, in seconds (default=%d).",
DEFAULT_OFFDELAY);
addvar (VAR_VALUE, "offdelay", msg);
snprintf(msg, sizeof(msg), "Set startup delay, in ten seconds units (default=%d).",
DEFAULT_ONDELAY);
addvar (VAR_VALUE, "ondelay", msg);
snprintf(msg, sizeof(msg), "Set notification type, 1 = no, 2 = light, 3 = yes (default=%d).",
DEFAULT_NOTIFICATION);
addvar (VAR_VALUE, "notification", msg);
}
/* --------------------------------------------------------------- */
void upsdrv_initups (void)
{
upsdebugx(2, "entering upsdrv_initups()");
/* initialize serial port */
upsfd = ser_open(device_path);
ser_set_speed(upsfd, device_path, B2400);
setline (1);
/* get battery lowlevel */
if (getval ("lowbatt"))
lowbatt = atoi (getval ("lowbatt"));
/* on delay */
if (getval ("ondelay"))
ondelay = atoi (getval ("ondelay"));
/* shutdown delay */
if (getval ("offdelay"))
offdelay = atoi (getval ("offdelay"));
/* notification type */
if (getval ("notification"))
notification = atoi (getval ("notification"));
/* initialise communication */
if (shut_ups_start () != 0)
fatalx(EXIT_FAILURE, "No communication with UPS");
else
upsdebugx(2, "Communication with UPS established");
/* initialise HID communication */
if(hid_init_device() != 0)
fatalx(EXIT_FAILURE, "Can't initialise HID device");
}
/* --------------------------------------------------------------- */
void upsdrv_cleanup(void)
{
ser_close(upsfd, device_path);
}
/* --------------------------------------------------------------- */
int instcmd(const char *cmdname, const char *extra)
{
/* Shutdown UPS and return when power is restored */
if (!strcasecmp(cmdname, "shutdown.return")) {
sdtype = SD_RETURN;
upsdrv_shutdown();
return STAT_INSTCMD_HANDLED;
}
/* Shutdown UPS and stay off when power is restored */
if (!strcasecmp(cmdname, "shutdown.stayoff")) {
sdtype = SD_STAYOFF;
upsdrv_shutdown();
return STAT_INSTCMD_HANDLED;
}
/* Power off the load immediatly */
if (!strcasecmp(cmdname, "load.off")) {
/* set DelayBeforeShutdown to 0 */
hid_set_value("ups.timer.shutdown", "0");
return STAT_INSTCMD_HANDLED;
}
/* Power on the load immediatly */
if (!strcasecmp(cmdname, "load.on")) {
/* set DelayBeforeStartup to 0 */
hid_set_value("ups.timer.start", "0");
return STAT_INSTCMD_HANDLED;
}
/* Start battery test */
if (!strcasecmp(cmdname, "test.battery.start")) {
/* set Test to 1 (Quick test) */
hid_set_value("ups.test.result", "1");
return STAT_INSTCMD_HANDLED;
}
/* Stop battery test */
if (!strcasecmp(cmdname, "test.battery.stop")) {
/* set Test to 3 (Abort test) */
hid_set_value("ups.test.result", "3");
return STAT_INSTCMD_HANDLED;
}
upslogx(LOG_NOTICE, "instcmd: unknown command [%s]", cmdname);
return STAT_INSTCMD_UNKNOWN;
}
/*****************************************************************************
* shut_ups_start ()
*
* initiate communication with the UPS
*
* return 0 on success, -1 on failure
*
*****************************************************************************/
int shut_ups_start ()
{
u_char c = SHUT_SYNC, r[1];
int try;
upsdebugx (2, "entering shut_ups_start()\n");
r[0] = '\0';
switch (notification) {
case OFF_NOTIFICATION:
c = SHUT_SYNC_OFF;
break;
case LIGHT_NOTIFICATION:
c = SHUT_SYNC_LIGHT;
break;
default:
case COMPLETE_NOTIFICATION:
c = SHUT_SYNC;
break;
}
/* Sync with the UPS using Complete, Off or light notification */
for (try = 0; try < MAX_TRY; try++) {
if ((shut_token_send(c)) == -1) {
upsdebugx (3, "Communication error while writing to port");
return -1;
}
serial_read (1000, &r[0]);
if (r[0] == c) {
commstatus = 1;
upsdebugx (3, "Syncing and notification setting done");
return 0;
}
}
commstatus = 0;
return -1;
}
/**********************************************************************
* shut_identify_ups ()
*
* Get SHUT device complete name
*
* return 0 on success, -1 on failure
*
*********************************************************************/
int shut_identify_ups ()
{
char string[MAX_STRING];
char model[MAX_STRING];
const char *finalname = NULL;
int retcode, tries=MAX_TRY;
if (commstatus == 0)
return -1;
upsdebugx (2, "entering shut_identify_ups(0x%04x, 0x%04x)\n",
device_descriptor.dev_desc.iManufacturer,
device_descriptor.dev_desc.iProduct);
/* Get strings iModel and iProduct */
while (tries > 0)
{
if (shut_get_string(device_descriptor.dev_desc.iProduct, string, 0x25) > 0)
{
strcpy(model, string);
if(hid_get_value("UPS.PowerSummary.iModel") != 0 )
{
if((shut_get_string(hValue, string, 0x25)) > 0)
{
finalname = get_model_name(model, string);
upsdebugx (2, "iModel = %s", string);
tries = 0;
}
}
else
{
/* Try with "UPS.Flow.[4].ConfigApparentPower" */
if(hid_get_value("UPS.Flow.[4].ConfigApparentPower") != 0 )
{
snprintf(string, sizeof(string), "%i", (int)hValue);
finalname = get_model_name(model, string);
}
else
finalname = get_model_name(model, NULL);
tries = 0;
}
dstate_setinfo("ups.model", "%s", finalname);
}
else
tries--;
}
/* Get strings iSerialNumber */
if (((retcode = shut_get_string(device_descriptor.dev_desc.iSerialNumber, string, 0x25)) > 0)
&& strcmp(string, "") && string[0] != '\t') {
dstate_setinfo("ups.serial", "%s", string);
}
else
dstate_setinfo("ups.serial", "unknown");
/* all went fine */
return 1;
}
/**********************************************************************
* shut_wait_ack()
*
* wait for an ACK packet
*
* returns 0 on success, -1 on error, -2 on NACK, -3 on NOTIFICATION
*
*********************************************************************/
int shut_wait_ack (void)
{
u_char c[1];
c[0] = '\0';
serial_read (DEFAULT_TIMEOUT, &c[0]);
if (c[0] == SHUT_OK) {
upsdebugx (2, "shut_wait_ack(): ACK received");
return 0;
}
else if (c[0] == SHUT_NOK) {
upsdebugx (2, "shut_wait_ack(): NACK received");
return -2;
}
else if ((c[0] & 0x0f) == SHUT_TYPE_NOTIFY) {
upsdebugx (2, "shut_wait_ack(): NOTIFY received");
return -3;
}
upsdebugx (2, "shut_wait_ack(): Nothing received");
return -1;
}
/**********************************************************************
* char_read (char *bytes, int size, int read_timeout)
*
* reads size bytes from the serial port
*
* bytes - buffer to store the data
* size - size of the data to get
* read_timeout - serial timeout (in milliseconds)
*
* return -1 on error, -2 on timeout, nb_bytes_readen on success
*
*********************************************************************/
static int char_read (char *bytes, int size, int read_timeout)
{
struct timeval serial_timeout;
fd_set readfs;
int readen = 0;
int rc = 0;
FD_ZERO (&readfs);
FD_SET (upsfd, &readfs);
serial_timeout.tv_usec = (read_timeout % 1000) * 1000;
serial_timeout.tv_sec = (read_timeout / 1000);
rc = select (upsfd + 1, &readfs, NULL, NULL, &serial_timeout);
if (0 == rc)
return -2; /* timeout */
if (FD_ISSET (upsfd, &readfs)) {
int now = read (upsfd, bytes, size - readen);
if (now < 0) {
return -1;
}
else {
bytes += now;
readen += now;
}
}
else {
return -1;
}
return readen;
}
/**********************************************************************
* serial_read (int read_timeout)
*
* return data one byte at a time
*
* read_timeout - serial timeout (in milliseconds)
*
* returns 0 on success, -1 on error, -2 on timeout
*
**********************************************************************/
int serial_read (int read_timeout, u_char *readbuf)
{
static u_char cache[512];
static u_char *cachep = cache;
static u_char *cachee = cache;
int recv;
*readbuf = '\0';
/* if still data in cache, get it */
if (cachep < cachee) {
*readbuf = *cachep++;
return 0;
/* return (int) *cachep++; */
}
recv = char_read ((char *)cache, 1, read_timeout);
if ((recv == -1) || (recv == -2))
return recv;
cachep = cache;
cachee = cache + recv;
cachep = cache;
cachee = cache + recv;
if (recv) {
upsdebugx(5,"received: %02x", *cachep);
*readbuf = *cachep++;
return 0;
}
return -1;
}
/**********************************************************************
* serial_send (char *buf, int len)
*
* write the content of buf to the serial port
*
* buf - data to send
* len - lenght of data to send
*
* returns number of bytes written on success, -1 on error
*
**********************************************************************/
int serial_send (u_char *buf, int len)
{
tcflush (upsfd, TCIFLUSH);
upsdebug_hex (3, "sent", (u_char *)buf, len);
return write (upsfd, buf, len);
}
/*
* Serial HID UPS Transfer (SHUT) functions
*********************************************************************/
/* Get and parse UPS status */
void shut_ups_status(void)
{
int try = 0, retcode = 0;
/* clear status buffer before begining */
status_init();
/* Ensure to have at least basic status */
while (try < MAX_TRY) {
if((retcode = hid_get_value("UPS.PowerSummary.PresentStatus.ACPresent")) != 0 ) {
try = MAX_TRY;
if(hValue == 1){
status_set("OL");
} else {
status_set("OB");
}
} else { /* retry to get data */
try++;
}
}
if(hid_get_value("UPS.PowerSummary.PresentStatus.Discharging") != 0 ) {
if(hValue == 1)
status_set("DISCHRG");
}
if(hid_get_value("UPS.PowerSummary.PresentStatus.Charging") != 0 ) {
if(hValue == 1)
status_set("CHRG");
}
if(hid_get_value("UPS.PowerSummary.PresentStatus.ShutdownImminent") != 0 ) {
if(hValue == 1)
status_set("LB");
}
if(hid_get_value("UPS.PowerSummary.PresentStatus.BelowRemainingCapacityLimit") != 0 ) {
if(hValue == 1)
status_set("LB");
}
if(hid_get_value("UPS.PowerSummary.PresentStatus.Overload") != 0 ) {
if(hValue == 1)
status_set("OVER");
}
if(hid_get_value("UPS.PowerSummary.PresentStatus.NeedReplacement") != 0 ) {
if(hValue == 1)
status_set("RB");
}
if(hid_get_value("UPS.PowerSummary.PresentStatus.Good") != 0 ) {
if(hValue == 0)
status_set("OFF");
}
/* FIXME: extend ups.status for BYPASS: */
/* Manual bypass */
if(hid_get_value("UPS.PowerConverter.Input.[4].PresentStatus.Used") != 0 ) {
if(hValue == 1)
status_set("BYPASS");
}
/* Automatic bypass */
if(hid_get_value("UPS.PowerConverter.Input.[2].PresentStatus.Used") != 0 ) {
if(hValue == 1)
status_set("BYPASS");
}
status_commit();
}
/* Calculate the SHUT checksum for the packet "buf" */
u_char shut_checksum(const u_char *buf, int bufsize)
{
int i;
u_char chk=0;
for(i=0; i<bufsize; i++)
chk^=buf[i];
return chk;
}
/* Send token (1 char packet) "token" */
int shut_token_send(u_char token)
{
u_char Buf[1];
Buf[0]=token;
return serial_send (Buf, 1);
}
int shut_packet_send (hid_data_t *hdata, int datalen, u_char token)
{
shut_packet_t SHUTRequest;
shut_data_t sdata;
short Retry=1;
short Size;
int i;
upsdebugx (3, "entering shut_packet_send (%i)", datalen);
while(datalen>0 && Retry>0)
{
Size=(datalen>=8) ? 8 : datalen;
/* Packets need only to be sent once
* NACK handling should take care of the rest */
if (Retry == 1) {
/* Forge SHUT Frame */
SHUTRequest.bType = SHUT_TYPE_REQUEST + token;
SHUTRequest.bLength = (Size<<4) + Size;
SHUTRequest.data = *hdata;
/* memcpy(&SHUTRequest.data.raw_pkt, hdata->raw_pkt, Size); */
sdata.shut_pkt = SHUTRequest;
sdata.raw_pkt[(Size+3) - 1] = shut_checksum(sdata.shut_pkt.data.raw_pkt, Size);
upsdebugx (4, "shut_checksum = %2x", sdata.raw_pkt[(Size+3)-1]);
serial_send (sdata.raw_pkt, Size+3);
}
i = shut_wait_ack ();
if (i == 0) {
datalen-=Size;
Retry=5;
upsdebugx (4, "received ACK");
break;
} else if ((i == -1) || (i == -3)) {
/* retry a finite number of times if something wrong happened while
* sending like a notification or a NACK */
if (Retry >= MAX_TRY) {
upsdebugx(2, "Max tries reached while waiting for ACK, still getting errors");
return i;
} else {
upsdebugx(4, "Retry = %i", Retry);
/* Send a NACK to get a resend from the UPS */
shut_token_send(SHUT_NOK);
Retry++;
}
}
}
return (datalen==0);
}
int shut_packet_recv (u_char *Buf, int datalen)
{
u_char Start[2];
u_char Frame[8];
u_char Chk[1];
u_short Size=8;
u_short Pos=0;
u_char Retry=0;
int recv;
upsdebugx (4, "entering shut_packet_recv (%i)", datalen);
while(datalen>0 && Retry<3)
{
if(serial_read (DEFAULT_TIMEOUT, &Start[0]) >= 0)
{
if(Start[0]==SHUT_SYNC)
{
upsdebugx (4, "received SYNC token");
memcpy(Buf, Start, 1);
return 1;
}
else
{
/* if(((Start[1] = serial_read (DEFAULT_TIMEOUT)) >= 0) && */
if((serial_read (DEFAULT_TIMEOUT, &Start[1]) >= 0) &&
((Start[1]>>4)==(Start[1]&0x0F)))
{
upsdebug_hex(3, "Receive", Start, 2);
Size=Start[1]&0x0F;
for(recv=0;recv<Size;recv++)
if(serial_read (DEFAULT_TIMEOUT, &Frame[recv]) < 0)
break;
upsdebug_hex(3, "Receive", Frame, Size);
serial_read (DEFAULT_TIMEOUT, &Chk[0]);
if(Chk[0]==shut_checksum(Frame, Size))
{
upsdebugx (4, "shut_checksum: %02x => OK", Chk[0]);
memcpy(Buf, Frame, Size);
datalen-=Size;
Buf+=Size;
Pos+=Size;
Retry=0;
shut_token_send(SHUT_OK);
/* Check if there are more data to receive */
if((Start[0] & 0xf0) == SHUT_PKT_LAST) {
/* Check if it's a notification */
if ((Start[0] & 0x0f) == SHUT_TYPE_NOTIFY) {
/* TODO: process notification (dropped for now) */
upsdebugx (4, "=> notification");
datalen+=Pos;
Pos=0;
}
else
return Pos;
}
else
upsdebugx (4, "need more data (%i)!", datalen);
}
else
{
upsdebugx (4, "shut_checksum: %02x => NOK", Chk[0]);
shut_token_send(SHUT_NOK);
Retry++;
}
}
else
return 0;
}
}
else
Retry++;
} /* while */
return 0;
}
/*
* Human Interface Device (HID) functions
*********************************************************************/
/**********************************************************************
* shut_get_descriptor(int desctype, u_char *pkt)
*
* get descriptor specified by DescType and return it in Buf
*
* desctype - from shutdataType
* pkt - where to store the report received
*
* return 0 on success, -1 on failure, -2 on NACK
*
*********************************************************************/
int shut_get_descriptor(int desctype, u_char *pkt, int reportlen)
{
hid_packet_t HIDRequest;
hid_data_t data;
int retcode;
upsdebugx (2, "entering shut_get_descriptor(n %02x, %i)",
desctype, reportlen);
HIDRequest.bmRequestType = REQUEST_TYPE_USB+(desctype>=HID_DESCRIPTOR?1:0);
HIDRequest.bRequest = 0x06;
HIDRequest.wValue = (desctype<<8);
HIDRequest.wIndex = 0x0000;
HIDRequest.wLength = reportlen;
align_request(&HIDRequest);
data.hid_pkt = HIDRequest;
/* if((retcode = shut_packet_send (&data, sizeof(data), SHUT_PKT_LAST)) > 0) */
if((retcode = shut_packet_send (&data, 8, SHUT_PKT_LAST)) > 0)
{
if((retcode = shut_packet_recv (pkt, reportlen)) > 0)
{
upsdebug_hex(3, "shut_get_descriptor", pkt, retcode);
return retcode;
}
else
return retcode;
}
return retcode;
}
/**********************************************************************
* shut_get_string(int index, u_char *pkt, int reportlen)
*
* get descriptor specified by DescType and return it in Buf
*
* index - from shutdataType
* string - where to store the string received
* strlen - length of string
*
* return string size on success, -1 on failure, -2 on NACK
*
*********************************************************************/
int shut_get_string(int strindex, char *string, int stringlen)
{
hid_packet_t HIDRequest;
hid_data_t data;
int retcode;
u_char buf[MAX_STRING];
upsdebugx (2, "entering shut_get_string(%02x)", strindex);
HIDRequest.bmRequestType = REQUEST_TYPE_USB;
HIDRequest.bRequest = 0x06;
HIDRequest.wValue = strindex+(STRING_DESCRIPTOR<<8);
HIDRequest.wIndex = 0x0000;
HIDRequest.wLength = (stringlen<<8); /* (reportlen&0xFF)&(reportlen>>8); */
align_request(&HIDRequest);
data.hid_pkt = HIDRequest;
if((retcode = shut_packet_send (&data, 8, SHUT_PKT_LAST)) >0)
{
upsdebug_hex(3, "shut_get_string", data.raw_pkt, 8);
if((retcode = shut_packet_recv (buf, stringlen)) > 0)
{
upsdebug_hex(3, "shut_get_string", buf, retcode);
make_string(buf, retcode, string);
upsdebugx(2, "string: %s", string);
return strlen(string);
}
else
return retcode;
}
return 0;
}
/**********************************************************************
* shut_get_report(int id, u_char *pkt, int reportlen)
*
* get report specified by id and return it in pkt
*
* id - from shutdataType
* pkt - where to store the string received
* strlen - length of string
*
* return report size on success, -1 on failure, -2 on NACK
*
*********************************************************************/
int shut_get_report(int id, u_char *pkt, int reportlen)
{
hid_packet_t HIDRequest;
hid_data_t data;
int retcode;
upsdebugx (2, "entering shut_get_report(id: %02x, len: %02x)", id, reportlen);
HIDRequest.bmRequestType = REQUEST_TYPE_GET_REPORT;
HIDRequest.bRequest = 0x01;
HIDRequest.wValue = id+(HID_REPORT_TYPE_FEATURE<<8);
HIDRequest.wIndex = 0x0000;
HIDRequest.wLength = reportlen;
align_request(&HIDRequest);
data.hid_pkt = HIDRequest;
/* if((retcode = shut_packet_send (&data, sizeof(data), SHUT_PKT_LAST)) > 0) */
if((retcode = shut_packet_send (&data, 8, SHUT_PKT_LAST)) > 0)
{
if((retcode = shut_packet_recv (pkt, reportlen)) > 0)
{
upsdebug_hex(3, "shut_get_report", pkt, retcode);
return retcode;
}
else
return retcode;
}
return retcode;
}
/**********************************************************************
* shut_set_report(int id, u_char *pkt, int reportlen)
*
* set report specified by id using pkt as value
*
* id - from shutdataType
* pkt - what to put in report
* strlen - length of report
*
* return string size on success, -1 on failure, -2 on NACK
*
*********************************************************************/
int shut_set_report(int id, u_char *pkt, int reportlen)
{
hid_packet_t HIDRequest;
hid_data_t data;
int retcode;
upsdebugx (2, "entering shut_set_report(id: %02x, len: %02x)", id, reportlen);
HIDRequest.bmRequestType = REQUEST_TYPE_SET_REPORT;
HIDRequest.bRequest = 0x09;
HIDRequest.wValue = id+(HID_REPORT_TYPE_FEATURE<<8);
HIDRequest.wIndex = 0x0000;
HIDRequest.wLength = reportlen;
align_request(&HIDRequest);
data.hid_pkt = HIDRequest;
/* first packet to instruct a set command */
if((retcode = shut_packet_send (&data, sizeof(data), 0x0)) > 0)
{
/* second packet to give the actual data */
memcpy(&data.raw_pkt, pkt, reportlen);
upsdebug_hex(3, "Set2", pkt, reportlen);
retcode = shut_packet_send (&data, reportlen, SHUT_PKT_LAST);
}
return retcode;
}
/**********************************************************************
* hid_init_device()
*
* Get Device/HID/Report descriptors from device and initialise
* HID Parser for further actions
*
* return 0 on success, -1 on failure
*
*********************************************************************/
int hid_init_device()
{
int retcode;
/* Get HID descriptor */
if((retcode = shut_get_descriptor(HID_DESCRIPTOR, hid_descriptor.raw_desc, 0x09)) > 0)
{
upsdebug_hex(3, "shut_get_descriptor(hid)", hid_descriptor.raw_desc, retcode);
/* WORKAROUND: need to be fixed */
hid_descriptor.hid_desc.wDescriptorLength = hid_descriptor.raw_desc[7] +
(hid_descriptor.raw_desc[8]<<8);
upsdebugx(3, "HID Descriptor: \nbLength: \t\t0x%02x\nbDescriptorType: \t0x%02x\n",
hid_descriptor.hid_desc.bLength,
hid_descriptor.hid_desc.bDescriptorType);
upsdebugx(3, "bcdHID: \t\t0x%04x\nbCountryCode: \t\t0x%02x\nbNumDescriptors: \t0x%02x\n",
hid_descriptor.hid_desc.bcdHID,
hid_descriptor.hid_desc.bCountryCode,
hid_descriptor.hid_desc.bNumDescriptors);
upsdebugx(3, "bReportDescriptorType: \t0x%02x\nwDescriptorLength: \t0x%04x",
hid_descriptor.hid_desc.bReportDescriptorType,
hid_descriptor.hid_desc.wDescriptorLength);
/* Get Device descriptor */
if((retcode = shut_get_descriptor(DEVICE_DESCRIPTOR, device_descriptor.raw_desc, 0x12)) > 0)
{
upsdebug_hex(3, "shut_get_descriptor(device)", device_descriptor.raw_desc, retcode);
upsdebugx(2, "Device Descriptor: \nbLength: \t\t0x%02x\nbDescriptorType:\
\t0x%02x\nbcdUSB: \t\t0x%04x\nbDeviceClass: \t\t0x%02x\nbDeviceSubClass:\
\t0x%02x\nbDeviceProtocol: \t0x%02x\nbMaxPacketSize0:\
\t0x%02x\nidVendor: \t\t0x%04x\nidProduct: \t\t0x%04x\nbcdDevice:\
\t\t0x%04x\niManufacturer: \t\t0x%02x\niProduct:\
\t\t0x%02x\niSerialNumber: \t\t0x%02x\nbNumConfigurations: \t0x%02x\n",
device_descriptor.dev_desc.bLength,
device_descriptor.dev_desc.bDescriptorType,
device_descriptor.dev_desc.bcdUSB,
device_descriptor.dev_desc.bDeviceClass,
device_descriptor.dev_desc.bDeviceSubClass,
device_descriptor.dev_desc.bDeviceProtocol,
device_descriptor.dev_desc.bMaxPacketSize0,
device_descriptor.dev_desc.idVendor,
device_descriptor.dev_desc.idProduct,
device_descriptor.dev_desc.bcdDevice,
device_descriptor.dev_desc.iManufacturer,
device_descriptor.dev_desc.iProduct,
device_descriptor.dev_desc.iSerialNumber,
device_descriptor.dev_desc.bNumConfigurations);
/* Get Report descriptor */
if((retcode = shut_get_descriptor(REPORT_DESCRIPTOR, raw_buf,
hid_descriptor.hid_desc.wDescriptorLength)) > 0) {
upsdebug_hex(3, "shut_get_descriptor(report)", raw_buf, retcode);
/* Parse Report Descriptor */
Free_ReportDesc(pDesc);
pDesc = Parse_ReportDesc(raw_buf, retcode);
if (!pDesc) {
fatalx(EXIT_FAILURE, "Failed to parse report descriptor: %s", strerror(errno));
}
}
else
fatalx(EXIT_FAILURE, "Unable to get Report Descriptor");
}
else
fatalx(EXIT_FAILURE, "Unable to get Device Descriptor");
}
else
fatalx(EXIT_FAILURE, "Unable to get HID Descriptor");
return 0;
}
/* translate HID string path to numeric path and return path depth */
ushort lookup_path(const char *HIDpath, HIDData_t *data)
{
ushort i = 0, cond = 1;
int cur_usage;
char buf[MAX_STRING];
char *start, *end;
strncpy(buf, HIDpath, strlen(HIDpath));
buf[strlen(HIDpath)] = '\0';
start = end = buf;
upsdebugx(3, "entering lookup_path(%s)", buf);
while (cond) {
if ((end = strchr(start, '.')) == NULL) {
cond = 0;
}
else
*end = '\0';
upsdebugx(4, "parsing %s", start);
/* lookup code */
if ((cur_usage = hid_lookup_usage(start)) == -1) {
upsdebugx(4, "%s wasn't found", start);
return 0;
}
else {
data->Path.Node[i] = cur_usage;
i++;
}
if(cond)
start = end +1 ;
}
data->Path.Size = i;
return i;
}
/* Lookup this usage name to find its code (page + index) */
int hid_lookup_usage(char *name)
{
int i;
upsdebugx(4, "Looking up %s", name);
if (name[0] == '[') /* manage indexed collection */
return (0x00FF0000 + atoi(&name[1]));
else {
for (i = 0; (usage_lkp[i].usage_code != 0x0); i++)
{
if (!strcmp(usage_lkp[i].usage_name, name))
{
upsdebugx(4, "hid_lookup_usage: found %04x",
usage_lkp[i].usage_code);
return usage_lkp[i].usage_code;
}
}
}
return -1;
}
/* Get an item value from a HID path */
int hid_get_value(const char *item_path)
{
int i, retcode;
HIDData_t hData;
upsdebugx(3, "entering hid_get_value(%s)", item_path);
/* Prepare path of HID object */
hData.Type = ITEM_FEATURE;
hData.ReportID = 0;
if((retcode = lookup_path(item_path, &hData)) > 0) {
upsdebugx(3, "Path depth = %i\n", retcode);
for (i = 0; i<retcode; i++)
upsdebugx(4, "%i: Usage(%08x)\n", i, hData.Path.Node[i]);
hData.Path.Size = retcode;
/* Get info on object (reportID, offset and size) */
if (FindObject(pDesc,&hData) == 1) {
if (shut_get_report(hData.ReportID, raw_buf, MAX_REPORT_SIZE) > 0) {
GetValue((const u_char *) raw_buf, &hData, &hValue);
upsdebug_hex(3, "Object's report", raw_buf, 10);
upsdebugx(3, "Value = %ld", hValue);
return 1;
}
else
shut_ups_start();
}
else {
upsdebugx(3, "Can't find object");
return 0;
}
}
else {
upsdebugx(3, "Can't lookup object's path");
return 0;
}
return 0;
}
/*
* Internal functions
****************************************************************************/
/*
* Filter and reformat HID strings (suppress space
* between each letter)
* Note: string format in HID String Descriptor is
* Byte1: Size of descriptor(=>string)
* Byte2: String descriptor type (always 0x03)
* Byte3 to byteN: UNICODE string (in US: xx 00 for a letter)
*/
void make_string(u_char *buf, int datalen, char *string)
{
int i, /* Skip size and type */
j=0;
upsdebugx(4, "String descriptor: size = 0x%02x, type = 0x%02x", buf[0], buf[1]);
/* TODO: add clean support for UNICODE */
for(i=2;i<datalen;i++) {
if(buf[i]!=0x00) {
string[j]=buf[i];
j++;
}
}
string[j++]='\0';
}
/*
* set RTS to on and DTR to off
*
* set : 1 to set comm
* set : 0 to stop commupsh.
*/
void setline (int set)
{
upsdebugx(3, "entering setline(%i)\n", set);
if (set == 1) {
ser_set_dtr(upsfd, 0);
ser_set_rts(upsfd, 1);
}
else {
ser_set_dtr(upsfd, 1);
ser_set_rts(upsfd, 0);
}
}
/* exponent function */
float expo(int a, int b)
{
if (b==0)
return (float) 1;
if (b>0)
return (float) a * expo(a,b-1);
if (b<0)
return (float)((float)(1/(float)a) * (float) expo(a,b+1));
/* not reached */
return -1;
}
/* Format model names */
const char *get_model_name(char *iProduct, char *iModel)
{
models_name_t *model = NULL;
upsdebugx(2, "get_model_name(%s, %s)\n", iProduct, iModel);
/* Search for formatting rules */
for ( model = models_names ; model->iProduct != NULL ; model++ )
{
upsdebugx(2, "comparing with: %s", model->finalname);
if ( (!strncmp(iProduct, model->iProduct, strlen(model->iProduct)))
&& (!strncmp(iModel, model->iModel, strlen(model->iModel))) )
{
upsdebugx(2, "Found %s\n", model->finalname);
break;
}
}
/* FIXME: if we end up with model->iProduct == NULL
* then process name in a generic way (not yet supported models!)
*/
return model->finalname;
}
/* set r/w INFO_ element to a value. */
int hid_set_value(const char *varname, const char *val)
{
int retcode, i, replen;
mge_info_item_t *shut_info_p;
HIDData_t hData;
upsdebugx(2, "============== entering hid_set_value(%s, %s) ==============", varname, val);
/* 1) retrieve and check netvar & item_path */
shut_info_p = shut_find_info(varname);
if (shut_info_p == NULL || shut_info_p->type == NULL ||
!(shut_info_p->flags & SHUT_FLAG_OK))
{
upsdebugx(2, "hid_ups_set: info element unavailable %s", varname);
return STAT_SET_UNKNOWN;
}
/* Checking item writability and HID Path */
if (!shut_info_p->flags & ST_FLAG_RW) {
upsdebugx(2, "hid_ups_set: not writable %s", varname);
return STAT_SET_UNKNOWN;
}
/* handle server side variable */
if (shut_info_p->shut_flags & SHUT_FLAG_ABSENT) {
upsdebugx(2, "hid_ups_set: setting server side variable %s", varname);
dstate_setinfo(shut_info_p->type, "%s", val);
return STAT_SET_HANDLED;
} else {
/* SHUT_FLAG_ABSENT is the only case of HID Path == NULL */
if (shut_info_p->item_path == NULL) {
upsdebugx(2, "hid_ups_set: ID Path is NULL for %s", varname);
return STAT_SET_UNKNOWN;
}
}
/* Prepare path of HID object */
hData.Type = ITEM_FEATURE;
hData.ReportID = 0;
if((retcode = lookup_path(shut_info_p->item_path, &hData)) > 0) {
upsdebugx(3, "Path depth = %i\n", retcode);
for (i = 0; i<retcode; i++)
upsdebugx(4, "%i: Usage(%08x)\n", i, hData.Path.Node[i]);
hData.Path.Size = retcode;
/* Get info on object (reportID, offset and size) */
if (FindObject(pDesc,&hData) == 1) {
replen = shut_get_report(hData.ReportID, raw_buf, MAX_REPORT_SIZE);
GetValue((const u_char *) raw_buf, &hData, &hValue);
/* Test if Item is settable */
if (hData.Attribute != ATTR_DATA_CST) {
/* Set new value for this item */
hValue = atol(val);
SetValue(&hData, raw_buf, hValue);
shut_set_report(hData.ReportID, raw_buf, replen);
/* check if set succeed ! => disabled for now
if (shut_get_report(hData.ReportID, raw_buf, MAX_REPORT_SIZE) > 0) {
GetValue((const u_char *) raw_buf, &hData, &hValue);
upsdebugx(3, "Value = %d", hValue);
if (hValue != atol(val))
upsdebugx(3, "FAILED");
else
upsdebugx(3, "SUCCEED");
} else
upsdebugx(3, "FAILED");
*/
return STAT_SET_HANDLED;
}
else
upsdebugx(3, "Object is constant");
}
else
upsdebugx(3, "Can't find object");
}
else
upsdebugx(3, "Can't lookup object's path");
return STAT_SET_UNKNOWN;
}
/* find info element definition in my info array. */
mge_info_item_t *shut_find_info(const char *varname)
{
mge_info_item_t *shut_info_p;
for (shut_info_p = &mge_info[0]; shut_info_p->type != NULL; shut_info_p++)
if (!strcasecmp(shut_info_p->type, varname))
return shut_info_p;
fatalx(EXIT_FAILURE, "shut_find_info: unknown info type: %s", varname);
return NULL;
}
/* find the NUT value matching that HID Item value */
static const char *hu_find_infoval(info_lkp_t *hid2info, long value)
{
info_lkp_t *info_lkp;
upsdebugx(3, "hu_find_infoval: searching for value = %ld\n", value);
for (info_lkp = hid2info; (info_lkp != NULL) &&
(strcmp(info_lkp->nut_value, "NULL")); info_lkp++) {
if (info_lkp->hid_value == value) {
upsdebugx(3, "hu_find_infoval: found %s (value: %ld)\n",
info_lkp->nut_value, value);
return info_lkp->nut_value;
}
}
upsdebugx(3, "hu_find_infoval: no matching INFO_* value for this HID value (%ld)\n", value);
return NULL;
}
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