/* ioctl.c
* Linux CAN-bus device driver.
* Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
* This software is released under the GPL-License.
- * Version 0.7 6 Aug 2001
+ * Version lincan-0.3 17 Jun 2004
*/
-#include <linux/autoconf.h>
-#if defined (CONFIG_MODVERSIONS) && !defined (MODVERSIONS)
-#define MODVERSIONS
-#endif
-
-#if defined (MODVERSIONS)
-#include <linux/modversions.h>
-#endif
-
-#include <linux/fs.h>
-#include <linux/version.h>
-#include <linux/string.h>
-
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
#include "../include/main.h"
#include "../include/ioctl.h"
#include "../include/i82527.h"
int i=0;
unsigned short channel=0;
unsigned btr0=0, btr1=0;
+ struct canuser_t *canuser = (struct canuser_t*)(file->private_data);
struct msgobj_t *obj;
- struct chip_t *chip = objects_p[MINOR_NR]->hostchip;
- struct canfifo_t *fifo = objects_p[MINOR_NR]->fifo;
-
- /* Initialize hardware pointers */
- if ( (obj = objects_p[MINOR_NR]) == NULL) {
+ struct canchip_t *chip;
+ struct canque_ends_t *qends;
+
+ if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
+ CANMSG("can_ioctl: bad canuser magic\n");
+ return -ENODEV;
+ }
+
+ obj = canuser->msgobj;
+ if (obj == NULL) {
CANMSG("Could not assign buffer structure\n");
return -1;
}
- if ( (chip = obj->hostchip) == NULL) {
+
+ qends = canuser->qends;
+ chip = obj->hostchip;
+ if (chip == NULL) {
CANMSG("Device is not correctly configured.\n");
CANMSG("Please reload the driver.\n");
return -1;
}
switch (cmd) {
+ case CAN_DRV_QUERY: {
+ return can_ioctl_query(canuser, arg);
+ }
case STAT: {
for (i=0x0; i<0x100; i++)
CANMSG("0x%x is 0x%x\n",i,can_read_reg(chip,i));
break;
}
case CMD_START: {
- if (chips_p[arg]->chipspecops->start_chip(chip))
+ if (chip->chipspecops->start_chip(chip))
return -1;
break;
}
case CMD_STOP: {
- if (chips_p[arg]->chipspecops->stop_chip(chip))
+ if (chip->chipspecops->stop_chip(chip))
return -1;
break;
}
+ case CANQUE_FLUSH: {
+ canque_flush(canuser->rx_edge0);
+ break;
+ }
case CONF_FILTER: {
- if (!strcmp(chip->chip_type,"i82527")) {
-
- unsigned char id1, id0;
- id1 = (unsigned char) (arg << 5);
- id0 = (unsigned char) (arg >> 3);
-
- DEBUGMSG("configuring ID=%lx in message object:
- %02x, %02x\n", arg, id0, id1);
- can_write_reg(chip,id1,MSG_OFFSET(obj->object) +
- iMSGID1);
- can_write_reg(chip,id0,MSG_OFFSET(obj->object) +
- iMSGID0);
- }
/* In- and output buffer re-initialization */
- fifo->tx_readp = fifo->buf_tx_entry;
- fifo->tx_writep = fifo->buf_tx_entry;
- fifo->rx_readp = fifo->buf_rx_entry;
- fifo->rx_writep = fifo->buf_rx_entry;
- fifo->rx_size= MAX_BUF_LENGTH * sizeof(struct canmsg_t);
- fifo->tx_size = fifo->rx_size;
-
- #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,0))
- init_waitqueue(&fifo->readq);
- init_waitqueue(&fifo->writeq);
- #else
- init_waitqueue_head(&fifo->readq);
- init_waitqueue_head(&fifo->writeq);
- #endif
-
- fifo->rx_in_progress = 0;
- fifo->tx_in_progress = 0;
+ if(canuser->rx_edge0){
+ canque_set_filt(canuser->rx_edge0, arg, ~0, 0);
+ }
break;
}
+
+ case CANQUE_FILTER: {
+ struct canfilt_t canfilt;
+ copy_from_user(&canfilt, (void*)arg, sizeof(struct canfilt_t));
+ if(canuser->rx_edge0){
+ canque_set_filt(canuser->rx_edge0, canfilt.id, canfilt.mask, canfilt.flags);
+ }
+ break;
+ }
+
+ case CANRTR_READ: {
+ int ret;
+ struct canmsg_t rtr_msg;
+
+ copy_from_user(&rtr_msg, (void*)arg, sizeof(struct canmsg_t));
+ ret = can_ioctl_remote_read(canuser, &rtr_msg, rtr_msg.id, 0);
+ if(ret<0) return ret;
+ copy_to_user((void*)arg, &rtr_msg, sizeof(struct canmsg_t));
+ }
case CONF_BAUD: {
channel = arg & 0xff;
btr0 = (arg >> 8) & 0xff;
btr1 = (arg >> 16) & 0xff;
- if (chips_p[channel]->chipspecops->set_btregs(chip,
- btr0, btr1)) {
+ if (chip->chipspecops->set_btregs(chip, btr0, btr1)) {
CANMSG("Error setting bit timing registers\n");
return -1;
}
break;
}
+
+ case CONF_BAUDPARAMS: {
+ struct can_baudparams_t params;
+ copy_from_user(¶ms, (void*)arg, sizeof(struct can_baudparams_t));
+ if(params.flags == -1) params.flags = 0;
+ if(params.baudrate == -1) params.baudrate = chip->baudrate;
+ if(params.sjw == -1) params.sjw = 0;
+ if(params.sample_pt == -1) params.sample_pt = 75;
+ i=chip->chipspecops->baud_rate(chip, params.baudrate, chip->clock, params.sjw,
+ params.sample_pt, params.flags);
+ if(i>=0) chip->baudrate = params.baudrate;
+ else {
+ CANMSG("Error setting baud parameters\n");
+ return -1;
+ }
+ break;
+ }
+
+
default: {
CANMSG("Not a valid ioctl command\n");
return -EINVAL;
projects / lincan.git / blobdiff