source "drivers/staging/vt6655/Kconfig"
-source "drivers/staging/cpc-usb/Kconfig"
-
source "drivers/staging/pata_rdc/Kconfig"
source "drivers/staging/udlfb/Kconfig"
obj-$(CONFIG_USB_SERIAL_QUATECH2) += serqt_usb2/
obj-$(CONFIG_OCTEON_ETHERNET) += octeon/
obj-$(CONFIG_VT6655) += vt6655/
-obj-$(CONFIG_USB_CPC) += cpc-usb/
obj-$(CONFIG_RDC_17F3101X) += pata_rdc/
obj-$(CONFIG_FB_UDL) += udlfb/
+++ /dev/null
-config USB_CPC
- tristate "CPC CAN USB driver"
- depends on USB && PROC_FS
- default n
+++ /dev/null
-obj-$(CONFIG_USB_CPC) += cpc-usb.o
-
-cpc-usb-y := cpc-usb_drv.o sja2m16c_2.o
+++ /dev/null
-Things to do for this driver to get merged into the main portion of the
-kernel:
- - checkpatch cleanups
- - sparse clean
- - remove proc code
- - tie into CAN socket interfaces if possible
- - figure out sane userspace api
-
-Send patches to Greg Kroah-Hartman <greg@kroah.com>
+++ /dev/null
-/*
- * CPC-USB CAN Interface Kernel Driver
- *
- * Copyright (C) 2004-2009 EMS Dr. Thomas Wuensche
- *
- * 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; version 2 of the License.
- *
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/module.h>
-#include <linux/poll.h>
-#include <linux/smp_lock.h>
-#include <linux/completion.h>
-#include <asm/uaccess.h>
-#include <linux/usb.h>
-
-#include <linux/version.h>
-
-#include <linux/proc_fs.h>
-
-#include "cpc.h"
-
-#include "cpc_int.h"
-#include "cpcusb.h"
-
-#include "sja2m16c.h"
-
-/* Version Information */
-#define DRIVER_AUTHOR "Sebastian Haas <haas@ems-wuensche.com>"
-#define DRIVER_DESC "CPC-USB Driver for Linux Kernel 2.6"
-#define DRIVER_VERSION CPC_DRIVER_VERSION
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_VERSION(DRIVER_VERSION);
-MODULE_LICENSE("GPL v2");
-
-/* Define these values to match your devices */
-#define USB_CPCUSB_VENDOR_ID 0x12D6
-
-#define USB_CPCUSB_M16C_PRODUCT_ID 0x0888
-#define USB_CPCUSB_LPC2119_PRODUCT_ID 0x0444
-
-#define CPC_USB_PROC_DIR CPC_PROC_DIR "cpc-usb"
-
-static struct proc_dir_entry *procDir;
-static struct proc_dir_entry *procEntry;
-
-/* Module parameters */
-static int debug;
-module_param(debug, int, S_IRUGO);
-
-/* table of devices that work with this driver */
-static struct usb_device_id cpcusb_table[] = {
- {USB_DEVICE(USB_CPCUSB_VENDOR_ID, USB_CPCUSB_M16C_PRODUCT_ID)},
- {USB_DEVICE(USB_CPCUSB_VENDOR_ID, USB_CPCUSB_LPC2119_PRODUCT_ID)},
- {} /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE(usb, cpcusb_table);
-
-/* use to prevent kernel panic if driver is unloaded
- * while a programm has still open the device
- */
-DECLARE_WAIT_QUEUE_HEAD(rmmodWq);
-atomic_t useCount;
-
-static CPC_USB_T *CPCUSB_Table[CPC_USB_CARD_CNT] = { 0 };
-static unsigned int CPCUsbCnt;
-
-/* prevent races between open() and disconnect() */
-static DECLARE_MUTEX(disconnect_sem);
-
-/* local function prototypes */
-static ssize_t cpcusb_read(struct file *file, char *buffer, size_t count,
- loff_t *ppos);
-static ssize_t cpcusb_write(struct file *file, const char *buffer,
- size_t count, loff_t *ppos);
-static unsigned int cpcusb_poll(struct file *file, poll_table * wait);
-static int cpcusb_open(struct inode *inode, struct file *file);
-static int cpcusb_release(struct inode *inode, struct file *file);
-
-static int cpcusb_probe(struct usb_interface *interface,
- const struct usb_device_id *id);
-static void cpcusb_disconnect(struct usb_interface *interface);
-
-static void cpcusb_read_bulk_callback(struct urb *urb);
-static void cpcusb_write_bulk_callback(struct urb *urb);
-static void cpcusb_read_interrupt_callback(struct urb *urb);
-
-static int cpcusb_setup_intrep(CPC_USB_T *card);
-
-static struct file_operations cpcusb_fops = {
- /*
- * The owner field is part of the module-locking
- * mechanism. The idea is that the kernel knows
- * which module to increment the use-counter of
- * BEFORE it calls the device's open() function.
- * This also means that the kernel can decrement
- * the use-counter again before calling release()
- * or should the open() function fail.
- */
- .owner = THIS_MODULE,
-
- .read = cpcusb_read,
- .write = cpcusb_write,
- .poll = cpcusb_poll,
- .open = cpcusb_open,
- .release = cpcusb_release,
-};
-
-/*
- * usb class driver info in order to get a minor number from the usb core,
- * and to have the device registered with devfs and the driver core
- */
-static struct usb_class_driver cpcusb_class = {
- .name = "usb/cpc_usb%d",
- .fops = &cpcusb_fops,
- .minor_base = CPC_USB_BASE_MNR,
-};
-
-/* usb specific object needed to register this driver with the usb subsystem */
-static struct usb_driver cpcusb_driver = {
- .name = "cpc-usb",
- .probe = cpcusb_probe,
- .disconnect = cpcusb_disconnect,
- .id_table = cpcusb_table,
-};
-
-static int cpcusb_create_info_output(char *buf)
-{
- int i = 0, j;
-
- for (j = 0; j < CPC_USB_CARD_CNT; j++) {
- if (CPCUSB_Table[j]) {
- CPC_USB_T *card = CPCUSB_Table[j];
- CPC_CHAN_T *chan = card->chan;
-
- /* MINOR CHANNELNO BUSNO SLOTNO */
- i += sprintf(&buf[i], "%d %s\n", chan->minor,
- card->serialNumber);
- }
- }
-
- return i;
-}
-
-static int cpcusb_proc_read_info(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- int len = cpcusb_create_info_output(page);
-
- if (len <= off + count)
- *eof = 1;
- *start = page + off;
- len -= off;
- if (len > count)
- len = count;
- if (len < 0)
- len = 0;
-
- return len;
-}
-
-/*
- * Remove CPC-USB and cleanup
- */
-static inline void cpcusb_delete(CPC_USB_T *card)
-{
- if (card) {
- if (card->chan) {
- if (card->chan->buf)
- vfree(card->chan->buf);
-
- if (card->chan->CPCWait_q)
- kfree(card->chan->CPCWait_q);
-
- kfree(card->chan);
- }
-
- CPCUSB_Table[card->idx] = NULL;
- kfree(card);
- }
-}
-
-/*
- * setup the interrupt IN endpoint of a specific CPC-USB device
- */
-static int cpcusb_setup_intrep(CPC_USB_T *card)
-{
- int retval = 0;
- struct usb_endpoint_descriptor *ep;
-
- ep = &card->interface->altsetting[0].endpoint[card->num_intr_in].desc;
-
- card->intr_in_buffer[0] = 0;
- card->free_slots = 15; /* initial size */
-
- /* setup the urb */
- usb_fill_int_urb(card->intr_in_urb, card->udev,
- usb_rcvintpipe(card->udev, card->num_intr_in),
- card->intr_in_buffer,
- sizeof(card->intr_in_buffer),
- cpcusb_read_interrupt_callback,
- card,
- ep->bInterval);
-
- card->intr_in_urb->status = 0; /* needed! */
-
- /* submit the urb */
- retval = usb_submit_urb(card->intr_in_urb, GFP_KERNEL);
-
- if (retval)
- err("%s - failed submitting intr urb, error %d", __func__,
- retval);
-
- return retval;
-}
-
-static int cpcusb_open(struct inode *inode, struct file *file)
-{
- CPC_USB_T *card = NULL;
- struct usb_interface *interface;
- int subminor;
- int j, retval = 0;
-
- subminor = iminor(inode);
-
- /* prevent disconnects */
- down(&disconnect_sem);
-
- interface = usb_find_interface(&cpcusb_driver, subminor);
- if (!interface) {
- err("%s - error, can't find device for minor %d",
- __func__, subminor);
- retval = CPC_ERR_NO_INTERFACE_PRESENT;
- goto exit_no_device;
- }
-
- card = usb_get_intfdata(interface);
- if (!card) {
- retval = CPC_ERR_NO_INTERFACE_PRESENT;
- goto exit_no_device;
- }
-
- /* lock this device */
- down(&card->sem);
-
- /* increment our usage count for the driver */
- if (card->open) {
- dbg("device already opened");
- retval = CPC_ERR_CHANNEL_ALREADY_OPEN;
- goto exit_on_error;
- }
-
- /* save our object in the file's private structure */
- file->private_data = card;
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- usb_fill_bulk_urb(card->urbs[j].urb, card->udev,
- usb_rcvbulkpipe(card->udev, card->num_bulk_in),
- card->urbs[j].buffer, card->urbs[j].size,
- cpcusb_read_bulk_callback, card);
-
- retval = usb_submit_urb(card->urbs[j].urb, GFP_KERNEL);
-
- if (retval) {
- err("%s - failed submitting read urb, error %d",
- __func__, retval);
- retval = CPC_ERR_TRANSMISSION_FAILED;
- goto exit_on_error;
- }
- }
-
- info("%s - %d URB's submitted", __func__, j);
-
- ResetBuffer(card->chan);
-
- cpcusb_setup_intrep(card);
- card->open = 1;
-
- atomic_inc(&useCount);
-
-exit_on_error:
- /* unlock this device */
- up(&card->sem);
-
-exit_no_device:
- up(&disconnect_sem);
-
- return retval;
-}
-
-static unsigned int cpcusb_poll(struct file *file, poll_table * wait)
-{
- CPC_USB_T *card = (CPC_USB_T *) file->private_data;
- unsigned int retval = 0;
-
- if (!card) {
- err("%s - device object lost", __func__);
- return -EIO;
- }
-
- poll_wait(file, card->chan->CPCWait_q, wait);
-
- if (IsBufferNotEmpty(card->chan) || !(card->present))
- retval |= (POLLIN | POLLRDNORM);
-
- if (card->free_slots)
- retval |= (POLLOUT | POLLWRNORM);
-
- return retval;
-}
-
-static int cpcusb_release(struct inode *inode, struct file *file)
-{
- CPC_USB_T *card = (CPC_USB_T *) file->private_data;
- int j, retval = 0;
-
- if (card == NULL) {
- dbg("%s - object is NULL", __func__);
- return CPC_ERR_NO_INTERFACE_PRESENT;
- }
-
- /* lock our device */
- down(&card->sem);
-
- if (!card->open) {
- dbg("%s - device not opened", __func__);
- retval = CPC_ERR_NO_INTERFACE_PRESENT;
- goto exit_not_opened;
- }
-
- /* if device wasn't unplugged kill all urbs */
- if (card->present) {
- /* kill read urbs */
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- usb_kill_urb(card->urbs[j].urb);
- }
-
- /* kill irq urb */
- usb_kill_urb(card->intr_in_urb);
-
- /* kill write urbs */
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- if (atomic_read(&card->wrUrbs[j].busy)) {
- usb_kill_urb(card->wrUrbs[j].urb);
- wait_for_completion(&card->wrUrbs[j].finished);
- }
- }
- }
-
- atomic_dec(&useCount);
-
- /* last process detached */
- if (atomic_read(&useCount) == 0) {
- wake_up(&rmmodWq);
- }
-
- if (!card->present && card->open) {
- /* the device was unplugged before the file was released */
- up(&card->sem);
- cpcusb_delete(card);
- return 0;
- }
-
- card->open = 0;
-
-exit_not_opened:
- up(&card->sem);
-
- return 0;
-}
-
-static ssize_t cpcusb_read(struct file *file, char *buffer, size_t count,
- loff_t *ppos)
-{
- CPC_USB_T *card = (CPC_USB_T *) file->private_data;
- CPC_CHAN_T *chan;
- int retval = 0;
-
- if (count < sizeof(CPC_MSG_T))
- return CPC_ERR_UNKNOWN;
-
- /* check if can read from the given address */
- if (!access_ok(VERIFY_WRITE, buffer, count))
- return CPC_ERR_UNKNOWN;
-
- /* lock this object */
- down(&card->sem);
-
- /* verify that the device wasn't unplugged */
- if (!card->present) {
- up(&card->sem);
- return CPC_ERR_NO_INTERFACE_PRESENT;
- }
-
- if (IsBufferEmpty(card->chan)) {
- retval = 0;
- } else {
- chan = card->chan;
-
-#if 0
- /* convert LPC2119 params back to SJA1000 params */
- if (card->deviceRevision >= 0x0200
- && chan->buf[chan->oidx].type == CPC_MSG_T_CAN_PRMS) {
- LPC2119_TO_SJA1000_Params(&chan->buf[chan->oidx]);
- }
-#endif
-
- if (copy_to_user(buffer, &chan->buf[chan->oidx], count) != 0) {
- retval = CPC_ERR_IO_TRANSFER;
- } else {
- chan->oidx = (chan->oidx + 1) % CPC_MSG_BUF_CNT;
- chan->WnR = 1;
- retval = sizeof(CPC_MSG_T);
- }
- }
-/* spin_unlock_irqrestore(&card->slock, flags); */
-
- /* unlock the device */
- up(&card->sem);
-
- return retval;
-}
-
-#define SHIFT 1
-static inline void cpcusb_align_buffer_alignment(unsigned char *buf)
-{
- /* CPC-USB uploads packed bytes. */
- CPC_MSG_T *cpc = (CPC_MSG_T *) buf;
- unsigned int i;
-
- for (i = 0; i < cpc->length + (2 * sizeof(unsigned long)); i++) {
- ((unsigned char *) &cpc->msgid)[1 + i] =
- ((unsigned char *) &cpc->msgid)[1 + SHIFT + i];
- }
-}
-
-static int cpc_get_buffer_count(CPC_CHAN_T *chan)
-{
- /* check the buffer parameters */
- if (chan->iidx == chan->oidx)
- return !chan->WnR ? CPC_MSG_BUF_CNT : 0;
- else if (chan->iidx >= chan->oidx)
- return (chan->iidx - chan->oidx) % CPC_MSG_BUF_CNT;
-
- return (chan->iidx + CPC_MSG_BUF_CNT - chan->oidx) % CPC_MSG_BUF_CNT;
-}
-
-static ssize_t cpcusb_write(struct file *file, const char *buffer,
- size_t count, loff_t *ppos)
-{
- CPC_USB_T *card = (CPC_USB_T *) file->private_data;
- CPC_USB_WRITE_URB_T *wrUrb = NULL;
-
- ssize_t bytes_written = 0;
- int retval = 0;
- int j;
-
- unsigned char *obuf = NULL;
- unsigned char type = 0;
- CPC_MSG_T *info = NULL;
-
- dbg("%s - entered minor %d, count = %zu, present = %d",
- __func__, card->minor, count, card->present);
-
- if (count > sizeof(CPC_MSG_T))
- return CPC_ERR_UNKNOWN;
-
- /* check if can read from the given address */
- if (!access_ok(VERIFY_READ, buffer, count))
- return CPC_ERR_UNKNOWN;
-
- /* lock this object */
- down(&card->sem);
-
- /* verify that the device wasn't unplugged */
- if (!card->present) {
- retval = CPC_ERR_NO_INTERFACE_PRESENT;
- goto exit;
- }
-
- /* verify that we actually have some data to write */
- if (count == 0) {
- dbg("%s - write request of 0 bytes", __func__);
- goto exit;
- }
-
- if (card->free_slots <= 5) {
- info = (CPC_MSG_T *) buffer;
-
- if (info->type != CPC_CMD_T_CLEAR_CMD_QUEUE
- || card->free_slots <= 0) {
- dbg("%s - send buffer full please try again %d",
- __func__, card->free_slots);
- retval = CPC_ERR_CAN_NO_TRANSMIT_BUF;
- goto exit;
- }
- }
-
- /* Find a free write urb */
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- if (!atomic_read(&card->wrUrbs[j].busy)) {
- wrUrb = &card->wrUrbs[j]; /* remember found URB */
- atomic_set(&wrUrb->busy, 1); /* lock this URB */
- init_completion(&wrUrb->finished); /* init completion */
- dbg("WR URB no. %d started", j);
- break;
- }
- }
-
- /* don't found write urb say error */
- if (!wrUrb) {
- dbg("%s - no free send urb available", __func__);
- retval = CPC_ERR_CAN_NO_TRANSMIT_BUF;
- goto exit;
- }
- dbg("URB write req");
-
- obuf = (unsigned char *) wrUrb->urb->transfer_buffer;
-
- /* copy the data from userspace into our transfer buffer;
- * this is the only copy required.
- */
- if (copy_from_user(&obuf[4], buffer, count) != 0) {
- atomic_set(&wrUrb->busy, 0); /* release urb */
- retval = CPC_ERR_IO_TRANSFER;
- goto exit;
- }
-
- /* check if it is a DRIVER information message, so we can
- * response to that message and not the USB
- */
- info = (CPC_MSG_T *) &obuf[4];
-
- bytes_written = 11 + info->length;
- if (bytes_written >= wrUrb->size) {
- retval = CPC_ERR_IO_TRANSFER;
- goto exit;
- }
-
- switch (info->type) {
- case CPC_CMD_T_CLEAR_MSG_QUEUE:
- ResetBuffer(card->chan);
- break;
-
- case CPC_CMD_T_INQ_MSG_QUEUE_CNT:
- retval = cpc_get_buffer_count(card->chan);
- atomic_set(&wrUrb->busy, 0);
-
- goto exit;
-
- case CPC_CMD_T_INQ_INFO:
- if (info->msg.info.source == CPC_INFOMSG_T_DRIVER) {
- /* release urb cause we'll use it for driver
- * information
- */
- atomic_set(&wrUrb->busy, 0);
- if (IsBufferFull(card->chan)) {
- retval = CPC_ERR_IO_TRANSFER;
- goto exit;
- }
-
- /* it is a driver information request message and we have
- * free rx slots to store the response
- */
- type = info->msg.info.type;
- info = &card->chan->buf[card->chan->iidx];
-
- info->type = CPC_MSG_T_INFO;
- info->msg.info.source = CPC_INFOMSG_T_DRIVER;
- info->msg.info.type = type;
-
- switch (type) {
- case CPC_INFOMSG_T_VERSION:
- info->length = strlen(CPC_DRIVER_VERSION) + 2;
- sprintf(info->msg.info.msg, "%s\n",
- CPC_DRIVER_VERSION);
- break;
-
- case CPC_INFOMSG_T_SERIAL:
- info->length = strlen(CPC_DRIVER_SERIAL) + 2;
- sprintf(info->msg.info.msg, "%s\n",
- CPC_DRIVER_SERIAL);
- break;
-
- default:
- info->length = 2;
- info->msg.info.type =
- CPC_INFOMSG_T_UNKNOWN_TYPE;
- }
-
- card->chan->WnR = 0;
- card->chan->iidx =
- (card->chan->iidx + 1) % CPC_MSG_BUF_CNT;
-
- retval = info->length;
- goto exit;
- }
- break;
- case CPC_CMD_T_CAN_PRMS:
- /* Check the controller type. If it's the new CPC-USB, make sure if these are SJA1000 params */
- if (info->msg.canparams.cc_type != SJA1000
- && info->msg.canparams.cc_type != M16C_BASIC
- && (card->productId == USB_CPCUSB_LPC2119_PRODUCT_ID
- && info->msg.canparams.cc_type != SJA1000)) {
- /* don't forget to release the urb */
- atomic_set(&wrUrb->busy, 0);
- retval = CPC_ERR_WRONG_CONTROLLER_TYPE;
- goto exit;
- }
- break;
- }
-
- /* just convert the params if it is an old CPC-USB with M16C controller */
- if (card->productId == USB_CPCUSB_M16C_PRODUCT_ID) {
- /* if it is a parameter message convert it from SJA1000 controller
- * settings to M16C Basic controller settings
- */
- SJA1000_TO_M16C_BASIC_Params((CPC_MSG_T *) &obuf[4]);
- }
-
- /* don't forget the byte alignment */
- cpcusb_align_buffer_alignment(&obuf[4]);
-
- /* setup a the 4 byte header */
- obuf[0] = obuf[1] = obuf[2] = obuf[3] = 0;
-
- /* this urb was already set up, except for this write size */
- wrUrb->urb->transfer_buffer_length = bytes_written + 4;
-
- /* send the data out the bulk port */
- /* a character device write uses GFP_KERNEL,
- unless a spinlock is held */
- retval = usb_submit_urb(wrUrb->urb, GFP_KERNEL);
- if (retval) {
- atomic_set(&wrUrb->busy, 0); /* release urb */
- err("%s - failed submitting write urb, error %d",
- __func__, retval);
- } else {
- retval = bytes_written;
- }
-
-exit:
- /* unlock the device */
- up(&card->sem);
-
- dbg("%s - leaved", __func__);
-
- return retval;
-}
-
-/*
- * callback for interrupt IN urb
- */
-static void cpcusb_read_interrupt_callback(struct urb *urb)
-{
- CPC_USB_T *card = (CPC_USB_T *) urb->context;
- int retval;
- unsigned long flags;
-
- spin_lock_irqsave(&card->slock, flags);
-
- if (!card->present) {
- spin_unlock_irqrestore(&card->slock, flags);
- info("%s - no such device", __func__);
- return;
- }
-
- switch (urb->status) {
- case 0: /* success */
- card->free_slots = card->intr_in_buffer[1];
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /* urb was killed */
- spin_unlock_irqrestore(&card->slock, flags);
- dbg("%s - intr urb killed", __func__);
- return;
- default:
- info("%s - nonzero urb status %d", __func__, urb->status);
- break;
- }
-
- retval = usb_submit_urb(urb, GFP_ATOMIC);
- if (retval) {
- err("%s - failed resubmitting intr urb, error %d",
- __func__, retval);
- }
-
- spin_unlock_irqrestore(&card->slock, flags);
- wake_up_interruptible(card->chan->CPCWait_q);
-
- return;
-}
-
-#define UN_SHIFT 1
-#define CPCMSG_HEADER_LEN_FIRMWARE 11
-static inline int cpcusb_unalign_and_copy_buffy(unsigned char *out,
- unsigned char *in)
-{
- unsigned int i, j;
-
- for (i = 0; i < 3; i++)
- out[i] = in[i];
-
- for (j = 0; j < (in[1] + (CPCMSG_HEADER_LEN_FIRMWARE - 3)); j++)
- out[j + i + UN_SHIFT] = in[j + i];
-
- return i + j;
-}
-
-/*
- * callback for bulk IN urb
- */
-static void cpcusb_read_bulk_callback(struct urb *urb)
-{
- CPC_USB_T *card = (CPC_USB_T *) urb->context;
- CPC_CHAN_T *chan;
- unsigned char *ibuf = urb->transfer_buffer;
- int retval, msgCnt, start, again = 0;
- unsigned long flags;
-
- if (!card) {
- err("%s - device object lost", __func__);
- return;
- }
-
- spin_lock_irqsave(&card->slock, flags);
-
- if (!card->present) {
- spin_unlock_irqrestore(&card->slock, flags);
- info("%s - no such device", __func__);
- return;
- }
-
- switch (urb->status) {
- case 0: /* success */
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /* urb was killed */
- spin_unlock_irqrestore(&card->slock, flags);
- dbg("%s - read urb killed", __func__);
- return;
- default:
- info("%s - nonzero urb status %d", __func__, urb->status);
- break;
- }
-
- if (urb->actual_length) {
- msgCnt = ibuf[0] & ~0x80;
- again = ibuf[0] & 0x80;
-
- /* we have a 4 byte header */
- start = 4;
- chan = card->chan;
- while (msgCnt) {
- if (!(IsBufferFull(card->chan))) {
- start +=
- cpcusb_unalign_and_copy_buffy((unsigned char *)
- &chan->buf[chan->iidx], &ibuf[start]);
-
- if (start > urb->transfer_buffer_length) {
- err("%d > %d", start, urb->transfer_buffer_length);
- break;
- }
-
- chan->WnR = 0;
- chan->iidx = (chan->iidx + 1) % CPC_MSG_BUF_CNT;
- msgCnt--;
- } else {
- break;
- }
- }
- }
-
- usb_fill_bulk_urb(urb, card->udev,
- usb_rcvbulkpipe(card->udev, card->num_bulk_in),
- urb->transfer_buffer,
- urb->transfer_buffer_length,
- cpcusb_read_bulk_callback, card);
-
- retval = usb_submit_urb(urb, GFP_ATOMIC);
-
- if (retval) {
- err("%s - failed resubmitting read urb, error %d", __func__, retval);
- }
-
- spin_unlock_irqrestore(&card->slock, flags);
-
- wake_up_interruptible(card->chan->CPCWait_q);
-}
-
-/*
- * callback for bulk IN urb
- */
-static void cpcusb_write_bulk_callback(struct urb *urb)
-{
- CPC_USB_T *card = (CPC_USB_T *) urb->context;
- unsigned long flags;
- int j;
-
- spin_lock_irqsave(&card->slock, flags);
-
- /* find this urb */
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- if (card->wrUrbs[j].urb == urb) {
- dbg("URB found no. %d", j);
- /* notify anyone waiting that the write has finished */
- complete(&card->wrUrbs[j].finished);
- atomic_set(&card->wrUrbs[j].busy, 0);
- break;
- }
- }
-
- switch (urb->status) {
- case 0: /* success */
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /* urb was killed */
- spin_unlock_irqrestore(&card->slock, flags);
- dbg("%s - write urb no. %d killed", __func__, j);
- return;
- default:
- info("%s - nonzero urb status %d", __func__, urb->status);
- break;
- }
-
- spin_unlock_irqrestore(&card->slock, flags);
-
- wake_up_interruptible(card->chan->CPCWait_q);
-}
-
-static inline int cpcusb_get_free_slot(void)
-{
- int i;
-
- for (i = 0; i < CPC_USB_CARD_CNT; i++) {
- if (!CPCUSB_Table[i])
- return i;
- }
-
- return -1;
-}
-
-/*
- * probe function for new CPC-USB devices
- */
-static int cpcusb_probe(struct usb_interface *interface,
- const struct usb_device_id *id)
-{
- CPC_USB_T *card = NULL;
- CPC_CHAN_T *chan = NULL;
-
- struct usb_device *udev = interface_to_usbdev(interface);
- struct usb_host_interface *iface_desc;
- struct usb_endpoint_descriptor *endpoint;
-
- int i, j, retval = -ENOMEM, slot;
-
- slot = cpcusb_get_free_slot();
- if (slot < 0) {
- info("No more devices supported");
- return -ENOMEM;
- }
-
- /* allocate memory for our device state and initialize it */
- card = kzalloc(sizeof(CPC_USB_T), GFP_KERNEL);
- if (!card) {
- err("Out of memory");
- return -ENOMEM;
- }
- CPCUSB_Table[slot] = card;
-
- /* allocate and initialize the channel struct */
- card->chan = kmalloc(sizeof(CPC_CHAN_T), GFP_KERNEL);
- if (!card->chan) {
- kfree(card);
- err("Out of memory");
- return -ENOMEM;
- }
-
- chan = card->chan;
- memset(chan, 0, sizeof(CPC_CHAN_T));
- ResetBuffer(chan);
-
- init_MUTEX(&card->sem);
- spin_lock_init(&card->slock);
-
- card->udev = udev;
- card->interface = interface;
- if (udev->descriptor.iSerialNumber) {
- usb_string(udev, udev->descriptor.iSerialNumber, card->serialNumber,
- 128);
- info("Serial %s", card->serialNumber);
- }
-
- card->productId = udev->descriptor.idProduct;
- info("Product %s",
- card->productId == USB_CPCUSB_LPC2119_PRODUCT_ID ?
- "CPC-USB/ARM7" : "CPC-USB/M16C");
-
- /* set up the endpoint information */
- /* check out the endpoints */
- /* use only the first bulk-in and bulk-out endpoints */
- iface_desc = &interface->altsetting[0];
- for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
- endpoint = &iface_desc->endpoint[i].desc;
-
- if (!card->num_intr_in &&
- (endpoint->bEndpointAddress & USB_DIR_IN) &&
- ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_INT)) {
- card->intr_in_urb = usb_alloc_urb(0, GFP_KERNEL);
- card->num_intr_in = 1;
-
- if (!card->intr_in_urb) {
- err("No free urbs available");
- goto error;
- }
-
- dbg("intr_in urb %d", card->num_intr_in);
- }
-
- if (!card->num_bulk_in &&
- (endpoint->bEndpointAddress & USB_DIR_IN) &&
- ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_BULK)) {
- card->num_bulk_in = 2;
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- card->urbs[j].size = endpoint->wMaxPacketSize;
- card->urbs[j].urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!card->urbs[j].urb) {
- err("No free urbs available");
- goto error;
- }
- card->urbs[j].buffer =
- usb_buffer_alloc(udev,
- card->urbs[j].size,
- GFP_KERNEL,
- &card->urbs[j].urb->transfer_dma);
- if (!card->urbs[j].buffer) {
- err("Couldn't allocate bulk_in_buffer");
- goto error;
- }
- }
- info("%s - %d reading URB's allocated",
- __func__, CPC_USB_URB_CNT);
- }
-
- if (!card->num_bulk_out &&
- !(endpoint->bEndpointAddress & USB_DIR_IN) &&
- ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_BULK)) {
-
- card->num_bulk_out = 2;
-
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- card->wrUrbs[j].size =
- endpoint->wMaxPacketSize;
- card->wrUrbs[j].urb =
- usb_alloc_urb(0, GFP_KERNEL);
- if (!card->wrUrbs[j].urb) {
- err("No free urbs available");
- goto error;
- }
- card->wrUrbs[j].buffer = usb_buffer_alloc(udev,
- card->wrUrbs[j].size, GFP_KERNEL,
- &card->wrUrbs[j].urb->transfer_dma);
-
- if (!card->wrUrbs[j].buffer) {
- err("Couldn't allocate bulk_out_buffer");
- goto error;
- }
-
- usb_fill_bulk_urb(card->wrUrbs[j].urb, udev,
- usb_sndbulkpipe(udev, endpoint->bEndpointAddress),
- card->wrUrbs[j].buffer,
- card->wrUrbs[j].size,
- cpcusb_write_bulk_callback,
- card);
- }
-
- info("%s - %d writing URB's allocated", __func__, CPC_USB_URB_CNT);
- }
- }
-
- if (!(card->num_bulk_in && card->num_bulk_out)) {
- err("Couldn't find both bulk-in and bulk-out endpoints");
- goto error;
- }
-
- /* allow device read, write and ioctl */
- card->present = 1;
-
- /* we can register the device now, as it is ready */
- usb_set_intfdata(interface, card);
- retval = usb_register_dev(interface, &cpcusb_class);
-
- if (retval) {
- /* something prevented us from registering this driver */
- err("Not able to get a minor for this device.");
- usb_set_intfdata(interface, NULL);
- goto error;
- }
-
- card->chan->minor = card->minor = interface->minor;
-
- chan->buf = vmalloc(sizeof(CPC_MSG_T) * CPC_MSG_BUF_CNT);
- if (chan->buf == NULL) {
- err("Out of memory");
- retval = -ENOMEM;
- goto error;
- }
- info("Allocated memory for %d messages (%lu kbytes)",
- CPC_MSG_BUF_CNT, (long unsigned int)(sizeof(CPC_MSG_T) * CPC_MSG_BUF_CNT) / 1000);
- memset(chan->buf, 0, sizeof(CPC_MSG_T) * CPC_MSG_BUF_CNT);
-
- ResetBuffer(chan);
-
- card->chan->CPCWait_q = kmalloc(sizeof(wait_queue_head_t), GFP_KERNEL);
- if (!card->chan->CPCWait_q) {
- err("Out of memory");
- retval = -ENOMEM;
- goto error;
- }
- init_waitqueue_head(card->chan->CPCWait_q);
-
- CPCUSB_Table[slot] = card;
- card->idx = slot;
- CPCUsbCnt++;
-
- /* let the user know what node this device is now attached to */
- info("Device now attached to USB-%d", card->minor);
- return 0;
-
-error:
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- if (card->urbs[j].buffer) {
- usb_buffer_free(card->udev, card->urbs[j].size,
- card->urbs[j].buffer,
- card->urbs[j].urb->transfer_dma);
- card->urbs[j].buffer = NULL;
- }
- if (card->urbs[j].urb) {
- usb_free_urb(card->urbs[j].urb);
- card->urbs[j].urb = NULL;
- }
- }
-
- cpcusb_delete(card);
- return retval;
-}
-
-/*
- * called by the usb core when the device is removed from the system
- */
-static void cpcusb_disconnect(struct usb_interface *interface)
-{
- CPC_USB_T *card = NULL;
- int minor, j;
-
- /* prevent races with open() */
- down(&disconnect_sem);
-
- card = usb_get_intfdata(interface);
- usb_set_intfdata(interface, NULL);
-
- down(&card->sem);
-
- /* prevent device read, write and ioctl */
- card->present = 0;
-
- minor = card->minor;
-
- /* free all urbs and their buffers */
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- /* terminate an ongoing write */
- if (atomic_read(&card->wrUrbs[j].busy)) {
- usb_kill_urb(card->wrUrbs[j].urb);
- wait_for_completion(&card->wrUrbs[j].finished);
- }
- usb_buffer_free(card->udev, card->wrUrbs[j].size,
- card->wrUrbs[j].buffer,
- card->wrUrbs[j].urb->transfer_dma);
- usb_free_urb(card->wrUrbs[j].urb);
- }
- info("%d write URBs freed", CPC_USB_URB_CNT);
-
- /* free all urbs and their buffers */
- for (j = 0; j < CPC_USB_URB_CNT; j++) {
- usb_buffer_free(card->udev, card->urbs[j].size,
- card->urbs[j].buffer,
- card->urbs[j].urb->transfer_dma);
- usb_free_urb(card->urbs[j].urb);
- }
- info("%d read URBs freed", CPC_USB_URB_CNT);
- usb_free_urb(card->intr_in_urb);
-
- /* give back our minor */
- usb_deregister_dev(interface, &cpcusb_class);
-
- up(&card->sem);
-
- /* if the device is opened, cpcusb_release will clean this up */
- if (!card->open)
- cpcusb_delete(card);
- else
- wake_up_interruptible(card->chan->CPCWait_q);
-
- up(&disconnect_sem);
-
- CPCUsbCnt--;
- info("USB-%d now disconnected", minor);
-}
-
-static int __init CPCUsb_Init(void)
-{
- int result, i;
-
- info(DRIVER_DESC " v" DRIVER_VERSION);
- info("Build on " __DATE__ " at " __TIME__);
-
- for (i = 0; i < CPC_USB_CARD_CNT; i++)
- CPCUSB_Table[i] = 0;
-
- /* register this driver with the USB subsystem */
- result = usb_register(&cpcusb_driver);
- if (result) {
- err("usb_register failed. Error number %d", result);
- return result;
- }
-
- procDir = proc_mkdir(CPC_USB_PROC_DIR, NULL);
- if (!procDir) {
- err("Could not create proc entry");
- } else {
- procEntry = create_proc_read_entry("info", 0444, procDir,
- cpcusb_proc_read_info,
- NULL);
- if (!procEntry) {
- err("Could not create proc entry %s", CPC_USB_PROC_DIR "/info");
- remove_proc_entry(CPC_USB_PROC_DIR, NULL);
- procDir = NULL;
- }
- }
-
- return 0;
-}
-
-static void __exit CPCUsb_Exit(void)
-{
- wait_event(rmmodWq, !atomic_read(&useCount));
-
- /* deregister this driver with the USB subsystem */
- usb_deregister(&cpcusb_driver);
-
- if (procDir) {
- if (procEntry)
- remove_proc_entry("info", procDir);
- remove_proc_entry(CPC_USB_PROC_DIR, NULL);
- }
-}
-
-module_init(CPCUsb_Init);
-module_exit(CPCUsb_Exit);
+++ /dev/null
-/*
- * CPC CAN Interface Definitions
- *
- * Copyright (C) 2000-2008 EMS Dr. Thomas Wuensche
- *
- * 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.
- */
-#ifndef CPC_HEADER
-#define CPC_HEADER
-
-// the maximum length of the union members within a CPC_MSG
-// this value can be defined by the customer, but has to be
-// >= 64 bytes
-// however, if not defined before, we set a length of 64 byte
-#if !defined(CPC_MSG_LEN) || (CPC_MSG_LEN < 64)
-#undef CPC_MSG_LEN
-#define CPC_MSG_LEN 64
-#endif
-
-// check the operating system used
-#ifdef _WIN32 // running a Windows OS
-
-// define basic types on Windows platforms
-#ifdef _MSC_VER // Visual Studio
- typedef unsigned __int8 u8;
- typedef unsigned __int16 u16;
- typedef unsigned __int32 u32;
-#else // Borland Compiler
- typedef unsigned char u8;
- typedef unsigned short u16;
- typedef unsigned int u32;
-#endif
- // on Windows OS we use a byte alignment of 1
- #pragma pack(push, 1)
-
- // set the calling conventions for the library function calls
- #define CALL_CONV __stdcall
-#else
- // Kernel headers already define this types
- #ifndef __KERNEL__
- // define basic types
- typedef unsigned char u8;
- typedef unsigned short u16;
- typedef unsigned int u32;
- #endif
-
- // Linux does not use this calling convention
- #define CALL_CONV
-#endif
-
-// Transmission of events from CPC interfaces to PC can be individually
-// controlled per event type. Default state is: don't transmit
-// Control values are constructed by bit-or of Subject and Action
-// and passed to CPC_Control()
-
-// Control-Values for CPC_Control() Command Subject Selection
-#define CONTR_CAN_Message 0x04
-#define CONTR_Busload 0x08
-#define CONTR_CAN_State 0x0C
-#define CONTR_SendAck 0x10
-#define CONTR_Filter 0x14
-#define CONTR_CmdQueue 0x18 // reserved, do not use
-#define CONTR_BusError 0x1C
-
-// Control Command Actions
-#define CONTR_CONT_OFF 0
-#define CONTR_CONT_ON 1
-#define CONTR_SING_ON 2
-// CONTR_SING_ON doesn't change CONTR_CONT_ON state, so it should be
-// read as: transmit at least once
-
-// defines for confirmed request
-#define DO_NOT_CONFIRM 0
-#define DO_CONFIRM 1
-
-// event flags
-#define EVENT_READ 0x01
-#define EVENT_WRITE 0x02
-
-// Messages from CPC to PC contain a message object type field.
-// The following message types are sent by CPC and can be used in
-// handlers, others should be ignored.
-#define CPC_MSG_T_RESYNC 0 // Normally to be ignored
-#define CPC_MSG_T_CAN 1 // CAN data frame
-#define CPC_MSG_T_BUSLOAD 2 // Busload message
-#define CPC_MSG_T_STRING 3 // Normally to be ignored
-#define CPC_MSG_T_CONTI 4 // Normally to be ignored
-#define CPC_MSG_T_MEM 7 // Normally not to be handled
-#define CPC_MSG_T_RTR 8 // CAN remote frame
-#define CPC_MSG_T_TXACK 9 // Send acknowledge
-#define CPC_MSG_T_POWERUP 10 // Power-up message
-#define CPC_MSG_T_CMD_NO 11 // Normally to be ignored
-#define CPC_MSG_T_CAN_PRMS 12 // Actual CAN parameters
-#define CPC_MSG_T_ABORTED 13 // Command aborted message
-#define CPC_MSG_T_CANSTATE 14 // CAN state message
-#define CPC_MSG_T_RESET 15 // used to reset CAN-Controller
-#define CPC_MSG_T_XCAN 16 // XCAN data frame
-#define CPC_MSG_T_XRTR 17 // XCAN remote frame
-#define CPC_MSG_T_INFO 18 // information strings
-#define CPC_MSG_T_CONTROL 19 // used for control of interface/driver behaviour
-#define CPC_MSG_T_CONFIRM 20 // response type for confirmed requests
-#define CPC_MSG_T_OVERRUN 21 // response type for overrun conditions
-#define CPC_MSG_T_KEEPALIVE 22 // response type for keep alive conditions
-#define CPC_MSG_T_CANERROR 23 // response type for bus error conditions
-#define CPC_MSG_T_DISCONNECTED 24 // response type for a disconnected interface
-#define CPC_MSG_T_ERR_COUNTER 25 // RX/TX error counter of CAN controller
-
-#define CPC_MSG_T_FIRMWARE 100 // response type for USB firmware download
-
-// Messages from the PC to the CPC interface contain a command field
-// Most of the command types are wrapped by the library functions and have therefore
-// normally not to be used.
-// However, programmers who wish to circumvent the library and talk directly
-// to the drivers (mainly Linux programmers) can use the following
-// command types:
-
-#define CPC_CMD_T_CAN 1 // CAN data frame
-#define CPC_CMD_T_CONTROL 3 // used for control of interface/driver behaviour
-#define CPC_CMD_T_CAN_PRMS 6 // set CAN parameters
-#define CPC_CMD_T_CLEARBUF 8 // clears input queue; this is depricated, use CPC_CMD_T_CLEAR_MSG_QUEUE instead
-#define CPC_CMD_T_INQ_CAN_PARMS 11 // inquire actual CAN parameters
-#define CPC_CMD_T_FILTER_PRMS 12 // set filter parameter
-#define CPC_CMD_T_RTR 13 // CAN remote frame
-#define CPC_CMD_T_CANSTATE 14 // CAN state message
-#define CPC_CMD_T_XCAN 15 // XCAN data frame
-#define CPC_CMD_T_XRTR 16 // XCAN remote frame
-#define CPC_CMD_T_RESET 17 // used to reset CAN-Controller
-#define CPC_CMD_T_INQ_INFO 18 // miscellanous information strings
-#define CPC_CMD_T_OPEN_CHAN 19 // open a channel
-#define CPC_CMD_T_CLOSE_CHAN 20 // close a channel
-#define CPC_CMD_T_CNTBUF 21 // this is depricated, use CPC_CMD_T_INQ_MSG_QUEUE_CNT instead
-#define CPC_CMD_T_CAN_EXIT 200 // exit the CAN (disable interrupts; reset bootrate; reset output_cntr; mode = 1)
-
-#define CPC_CMD_T_INQ_MSG_QUEUE_CNT CPC_CMD_T_CNTBUF // inquires the count of elements in the message queue
-#define CPC_CMD_T_INQ_ERR_COUNTER 25 // request the CAN controllers error counter
-#define CPC_CMD_T_CLEAR_MSG_QUEUE CPC_CMD_T_CLEARBUF // clear CPC_MSG queue
-#define CPC_CMD_T_CLEAR_CMD_QUEUE 28 // clear CPC_CMD queue
-#define CPC_CMD_T_FIRMWARE 100 // reserved, must not be used
-#define CPC_CMD_T_USB_RESET 101 // reserved, must not be used
-#define CPC_CMD_T_WAIT_NOTIFY 102 // reserved, must not be used
-#define CPC_CMD_T_WAIT_SETUP 103 // reserved, must not be used
-#define CPC_CMD_T_ABORT 255 // Normally not to be used
-
-// definitions for CPC_MSG_T_INFO
-// information sources
-#define CPC_INFOMSG_T_UNKNOWN_SOURCE 0
-#define CPC_INFOMSG_T_INTERFACE 1
-#define CPC_INFOMSG_T_DRIVER 2
-#define CPC_INFOMSG_T_LIBRARY 3
-
-// information types
-#define CPC_INFOMSG_T_UNKNOWN_TYPE 0
-#define CPC_INFOMSG_T_VERSION 1
-#define CPC_INFOMSG_T_SERIAL 2
-
-// definitions for controller types
-#define PCA82C200 1 // Philips basic CAN controller, replaced by SJA1000
-#define SJA1000 2 // Philips basic CAN controller
-#define AN82527 3 // Intel full CAN controller
-#define M16C_BASIC 4 // M16C controller running in basic CAN (not full CAN) mode
-
-// channel open error codes
-#define CPC_ERR_NO_FREE_CHANNEL -1 // no more free space within the channel array
-#define CPC_ERR_CHANNEL_ALREADY_OPEN -2 // the channel is already open
-#define CPC_ERR_CHANNEL_NOT_ACTIVE -3 // access to a channel not active failed
-#define CPC_ERR_NO_DRIVER_PRESENT -4 // no driver at the location searched by the library
-#define CPC_ERR_NO_INIFILE_PRESENT -5 // the library could not find the inifile
-#define CPC_ERR_WRONG_PARAMETERS -6 // wrong parameters in the inifile
-#define CPC_ERR_NO_INTERFACE_PRESENT -7 // 1. The specified interface is not connected
- // 2. The interface (mostly CPC-USB) was disconnected upon operation
-#define CPC_ERR_NO_MATCHING_CHANNEL -8 // the driver couldn't find a matching channel
-#define CPC_ERR_NO_BUFFER_AVAILABLE -9 // the driver couldn't allocate buffer for messages
-#define CPC_ERR_NO_INTERRUPT -10 // the requested interrupt couldn't be claimed
-#define CPC_ERR_NO_MATCHING_INTERFACE -11 // no interface type related to this channel was found
-#define CPC_ERR_NO_RESOURCES -12 // the requested resources could not be claimed
-#define CPC_ERR_SOCKET -13 // error concerning TCP sockets
-
-// init error codes
-#define CPC_ERR_WRONG_CONTROLLER_TYPE -14 // wrong CAN controller type within initialization
-#define CPC_ERR_NO_RESET_MODE -15 // the controller could not be set into reset mode
-#define CPC_ERR_NO_CAN_ACCESS -16 // the CAN controller could not be accessed
-
-// transmit error codes
-#define CPC_ERR_CAN_WRONG_ID -20 // the provided CAN id is too big
-#define CPC_ERR_CAN_WRONG_LENGTH -21 // the provided CAN length is too long
-#define CPC_ERR_CAN_NO_TRANSMIT_BUF -22 // the transmit buffer was occupied
-#define CPC_ERR_CAN_TRANSMIT_TIMEOUT -23 // The message could not be sent within a
- // specified time
-
-// other error codes
-#define CPC_ERR_SERVICE_NOT_SUPPORTED -30 // the requested service is not supported by the interface
-#define CPC_ERR_IO_TRANSFER -31 // a transmission error down to the driver occurred
-#define CPC_ERR_TRANSMISSION_FAILED -32 // a transmission error down to the interface occurred
-#define CPC_ERR_TRANSMISSION_TIMEOUT -33 // a timeout occurred within transmission to the interface
-#define CPC_ERR_OP_SYS_NOT_SUPPORTED -35 // the operating system is not supported
-#define CPC_ERR_UNKNOWN -40 // an unknown error ocurred (mostly IOCTL errors)
-
-#define CPC_ERR_LOADING_DLL -50 // the library 'cpcwin.dll' could not be loaded
-#define CPC_ERR_ASSIGNING_FUNCTION -51 // the specified function could not be assigned
-#define CPC_ERR_DLL_INITIALIZATION -52 // the DLL was not initialized correctly
-#define CPC_ERR_MISSING_LICFILE -55 // the file containing the licenses does not exist
-#define CPC_ERR_MISSING_LICENSE -56 // a required license was not found
-
-// CAN state bit values. Ignore any bits not listed
-#define CPC_CAN_STATE_BUSOFF 0x80
-#define CPC_CAN_STATE_ERROR 0x40
-
-// Mask to help ignore undefined bits
-#define CPC_CAN_STATE_MASK 0xc0
-
-// CAN-Message representation in a CPC_MSG
-// Message object type is CPC_MSG_T_CAN or CPC_MSG_T_RTR
-// or CPC_MSG_T_XCAN or CPC_MSG_T_XRTR
-typedef struct CPC_CAN_MSG {
- u32 id;
- u8 length;
- u8 msg[8];
-} CPC_CAN_MSG_T;
-
-
-// representation of the CAN parameters for the PCA82C200 controller
-typedef struct CPC_PCA82C200_PARAMS {
- u8 acc_code; // Acceptance-code for receive, Standard: 0
- u8 acc_mask; // Acceptance-mask for receive, Standard: 0xff (everything)
- u8 btr0; // Bus-timing register 0
- u8 btr1; // Bus-timing register 1
- u8 outp_contr; // Output-control register
-} CPC_PCA82C200_PARAMS_T;
-
-// representation of the CAN parameters for the SJA1000 controller
-typedef struct CPC_SJA1000_PARAMS {
- u8 mode; // enables single or dual acceptance filtering
- u8 acc_code0; // Acceptance-code for receive, Standard: 0
- u8 acc_code1;
- u8 acc_code2;
- u8 acc_code3;
- u8 acc_mask0; // Acceptance-mask for receive, Standard: 0xff (everything)
- u8 acc_mask1;
- u8 acc_mask2;
- u8 acc_mask3;
- u8 btr0; // Bus-timing register 0
- u8 btr1; // Bus-timing register 1
- u8 outp_contr; // Output-control register
-} CPC_SJA1000_PARAMS_T;
-
-// representation of the CAN parameters for the M16C controller
-// in basic CAN mode (means no full CAN)
-typedef struct CPC_M16C_BASIC_PARAMS {
- u8 con0;
- u8 con1;
- u8 ctlr0;
- u8 ctlr1;
- u8 clk;
- u8 acc_std_code0;
- u8 acc_std_code1;
- u8 acc_ext_code0;
- u8 acc_ext_code1;
- u8 acc_ext_code2;
- u8 acc_ext_code3;
- u8 acc_std_mask0;
- u8 acc_std_mask1;
- u8 acc_ext_mask0;
- u8 acc_ext_mask1;
- u8 acc_ext_mask2;
- u8 acc_ext_mask3;
-} CPC_M16C_BASIC_PARAMS_T;
-
-// CAN params message representation
-typedef struct CPC_CAN_PARAMS {
- u8 cc_type; // represents the controller type
- union {
- CPC_M16C_BASIC_PARAMS_T m16c_basic;
- CPC_SJA1000_PARAMS_T sja1000;
- CPC_PCA82C200_PARAMS_T pca82c200;
- } cc_params;
-} CPC_CAN_PARAMS_T;
-
-// the following structures are slightly different for Windows and Linux
-// To be able to use the 'Select' mechanism with Linux the application
-// needs to know the devices file desciptor.
-// This mechanism is not implemented within Windows and the file descriptor
-// is therefore not needed
-#ifdef _WIN32
-
-// CAN init params message representation
-typedef struct CPC_INIT_PARAMS {
- CPC_CAN_PARAMS_T canparams;
-} CPC_INIT_PARAMS_T;
-
-#else// Linux
-
-// CHAN init params representation
-typedef struct CPC_CHAN_PARAMS {
- int fd;
-} CPC_CHAN_PARAMS_T;
-
-// CAN init params message representation
-typedef struct CPC_INIT_PARAMS {
- CPC_CHAN_PARAMS_T chanparams;
- CPC_CAN_PARAMS_T canparams;
-} CPC_INIT_PARAMS_T;
-
-#endif
-
-// structure for confirmed message handling
-typedef struct CPC_CONFIRM {
- u8 result; // error code
-} CPC_CONFIRM_T;
-
-// structure for information requests
-typedef struct CPC_INFO {
- u8 source; // interface, driver or library
- u8 type; // version or serial number
- char msg[CPC_MSG_LEN - 2]; // string holding the requested information
-} CPC_INFO_T;
-
-// OVERRUN ///////////////////////////////////////
-// In general two types of overrun may occur.
-// A hardware overrun, where the CAN controller
-// lost a message, because the interrupt was
-// not handled before the next messgae comes in.
-// Or a software overrun, where i.e. a received
-// message could not be stored in the CPC_MSG
-// buffer.
-
-// After a software overrun has occurred
-// we wait until we have CPC_OVR_GAP slots
-// free in the CPC_MSG buffer.
-#define CPC_OVR_GAP 10
-
-// Two types of software overrun may occur.
-// A received CAN message or a CAN state event
-// can cause an overrun.
-// Note: A CPC_CMD which would normally store
-// its result immediately in the CPC_MSG
-// queue may fail, because the message queue is full.
-// This will not generate an overrun message, but
-// will halt command execution, until this command
-// is able to store its message in the message queue.
-#define CPC_OVR_EVENT_CAN 0x01
-#define CPC_OVR_EVENT_CANSTATE 0x02
-#define CPC_OVR_EVENT_BUSERROR 0x04
-
-// If the CAN controller lost a message
-// we indicate it with the highest bit
-// set in the count field.
-#define CPC_OVR_HW 0x80
-
-// structure for overrun conditions
-typedef struct {
- u8 event;
- u8 count;
-} CPC_OVERRUN_T;
-
-// CAN errors ////////////////////////////////////
-// Each CAN controller type has different
-// registers to record errors.
-// Therefor a structure containing the specific
-// errors is set up for each controller here
-
-// SJA1000 error structure
-// see the SJA1000 datasheet for detailed
-// explanation of the registers
-typedef struct CPC_SJA1000_CAN_ERROR {
- u8 ecc; // error capture code register
- u8 rxerr; // RX error counter register
- u8 txerr; // TX error counter register
-} CPC_SJA1000_CAN_ERROR_T;
-
-// M16C error structure
-// see the M16C datasheet for detailed
-// explanation of the registers
-typedef struct CPC_M16C_CAN_ERROR {
- u8 tbd; // to be defined
-} CPC_M16C_CAN_ERROR_T;
-
-// structure for CAN error conditions
-#define CPC_CAN_ECODE_ERRFRAME 0x01
-typedef struct CPC_CAN_ERROR {
- u8 ecode;
- struct {
- u8 cc_type; // CAN controller type
- union {
- CPC_SJA1000_CAN_ERROR_T sja1000;
- CPC_M16C_CAN_ERROR_T m16c;
- } regs;
- } cc;
-} CPC_CAN_ERROR_T;
-
-// Structure containing RX/TX error counter.
-// This structure is used to request the
-// values of the CAN controllers TX and RX
-// error counter.
-typedef struct CPC_CAN_ERR_COUNTER {
- u8 rx;
- u8 tx;
-} CPC_CAN_ERR_COUNTER_T;
-
-// If this flag is set, transmissions from PC to CPC are protected against loss
-#define CPC_SECURE_TO_CPC 0x01
-
-// If this flag is set, transmissions from CPC to PC are protected against loss
-#define CPC_SECURE_TO_PC 0x02
-
-// If this flag is set, the CAN-transmit buffer is checked to be free before sending a message
-#define CPC_SECURE_SEND 0x04
-
-// If this flag is set, the transmission complete flag is checked
-// after sending a message
-// THIS IS CURRENTLY ONLY IMPLEMENTED IN THE PASSIVE INTERFACE DRIVERS
-#define CPC_SECURE_TRANSMIT 0x08
-
-// main message type used between library and application
-typedef struct CPC_MSG {
- u8 type; // type of message
- u8 length; // length of data within union 'msg'
- u8 msgid; // confirmation handle
- u32 ts_sec; // timestamp in seconds
- u32 ts_nsec; // timestamp in nano seconds
- union {
- u8 generic[CPC_MSG_LEN];
- CPC_CAN_MSG_T canmsg;
- CPC_CAN_PARAMS_T canparams;
- CPC_CONFIRM_T confirmation;
- CPC_INFO_T info;
- CPC_OVERRUN_T overrun;
- CPC_CAN_ERROR_T error;
- CPC_CAN_ERR_COUNTER_T err_counter;
- u8 busload;
- u8 canstate;
- } msg;
-} CPC_MSG_T;
-
-#ifdef _WIN32
-#pragma pack(pop) // reset the byte alignment
-#endif
-
-#endif // CPC_HEADER
+++ /dev/null
-/*
- * CPCLIB
- *
- * Copyright (C) 2000-2008 EMS Dr. Thomas Wuensche
- *
- * 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.
- *
- */
-#ifndef CPC_INT_H
-#define CPC_INT_H
-
-#include <linux/wait.h>
-
-#define CPC_MSG_BUF_CNT 1500
-
-#define CPC_PROC_DIR "driver/"
-
-#undef dbg
-#undef err
-#undef info
-
-/* Use our own dbg macro */
-#define dbg(format, arg...) do { if (debug) printk( KERN_INFO format "\n" , ## arg); } while (0)
-#define err(format, arg...) do { printk( KERN_INFO "ERROR " format "\n" , ## arg); } while (0)
-#define info(format, arg...) do { printk( KERN_INFO format "\n" , ## arg); } while (0)
-
-/* Macros help using of our buffers */
-#define IsBufferFull(x) (!(x)->WnR) && ((x)->iidx == (x)->oidx)
-#define IsBufferEmpty(x) ((x)->WnR) && ((x)->iidx == (x)->oidx)
-#define IsBufferNotEmpty(x) (!(x)->WnR) || ((x)->iidx != (x)->oidx)
-#define ResetBuffer(x) do { (x)->oidx = (x)->iidx=0; (x)->WnR = 1; } while(0);
-
-#define CPC_BufWriteAllowed ((chan->oidx != chan->iidx) || chan->WnR)
-
-typedef void (*chan_write_byte_t) (void *chan, unsigned int reg,
- unsigned char val);
-typedef unsigned char (*chan_read_byte_t) (void *chan, unsigned int reg);
-
-typedef struct CPC_CHAN {
- void __iomem * canBase; // base address of SJA1000
- chan_read_byte_t read_byte; // CAN controller read access routine
- chan_write_byte_t write_byte; // CAN controller write access routine
- CPC_MSG_T *buf; // buffer for CPC msg
- unsigned int iidx;
- unsigned int oidx;
- unsigned int WnR;
- unsigned int minor;
- unsigned int locked;
- unsigned int irqDisabled;
-
- unsigned char cpcCtrlCANMessage;
- unsigned char cpcCtrlCANState;
- unsigned char cpcCtrlBUSState;
-
- unsigned char controllerType;
-
- unsigned long ovrTimeSec;
- unsigned long ovrTimeNSec;
- unsigned long ovrLockedBuffer;
- CPC_OVERRUN_T ovr;
-
- /* for debugging only */
- unsigned int handledIrqs;
- unsigned int lostMessages;
-
- unsigned int sentStdCan;
- unsigned int sentExtCan;
- unsigned int sentStdRtr;
- unsigned int sentExtRtr;
-
- unsigned int recvStdCan;
- unsigned int recvExtCan;
- unsigned int recvStdRtr;
- unsigned int recvExtRtr;
-
- wait_queue_head_t *CPCWait_q;
-
- void *private;
-} CPC_CHAN_T;
-
-#endif
+++ /dev/null
-/* Header for CPC-USB Driver ********************
- * Copyright 1999, 2000, 2001
- *
- * Company: EMS Dr. Thomas Wuensche
- * Sonnenhang 3
- * 85304 Ilmmuenster
- * Phone: +49-8441-490260
- * Fax: +49-8441-81860
- * email: support@ems-wuensche.com
- * WWW: www.ems-wuensche.com
- */
-
-#ifndef CPCUSB_H
-#define CPCUSB_H
-
-#undef err
-#undef dbg
-#undef info
-
-/* Use our own dbg macro */
-#define dbg(format, arg...) do { if (debug) printk(KERN_INFO "CPC-USB: " format "\n" , ## arg); } while (0)
-#define info(format, arg...) do { printk(KERN_INFO "CPC-USB: " format "\n" , ## arg); } while (0)
-#define err(format, arg...) do { printk(KERN_INFO "CPC-USB(ERROR): " format "\n" , ## arg); } while (0)
-
-#define CPC_USB_CARD_CNT 4
-
-typedef struct CPC_USB_READ_URB {
- unsigned char *buffer; /* the buffer to send data */
- size_t size; /* the size of the send buffer */
- struct urb *urb; /* the urb used to send data */
-} CPC_USB_READ_URB_T;
-
-typedef struct CPC_USB_WRITE_URB {
- unsigned char *buffer; /* the buffer to send data */
- size_t size; /* the size of the send buffer */
- struct urb *urb; /* the urb used to send data */
- atomic_t busy; /* true if write urb is busy */
- struct completion finished; /* wait for the write to finish */
-} CPC_USB_WRITE_URB_T;
-
-#define CPC_USB_URB_CNT 10
-
-typedef struct CPC_USB {
- struct usb_device *udev; /* save off the usb device pointer */
- struct usb_interface *interface; /* the interface for this device */
- unsigned char minor; /* the starting minor number for this device */
- unsigned char num_ports; /* the number of ports this device has */
- int num_intr_in; /* number of interrupt in endpoints we have */
- int num_bulk_in; /* number of bulk in endpoints we have */
- int num_bulk_out; /* number of bulk out endpoints we have */
-
- CPC_USB_READ_URB_T urbs[CPC_USB_URB_CNT];
-
- unsigned char intr_in_buffer[4]; /* interrupt transfer buffer */
- struct urb *intr_in_urb; /* interrupt transfer urb */
-
- CPC_USB_WRITE_URB_T wrUrbs[CPC_USB_URB_CNT];
-
- int open; /* if the port is open or not */
- int present; /* if the device is not disconnected */
- struct semaphore sem; /* locks this structure */
-
- int free_slots; /* free send slots of CPC-USB */
- int idx;
-
- spinlock_t slock;
-
- char serialNumber[128]; /* serial number */
- int productId; /* product id to differ between M16C and LPC2119 */
- CPC_CHAN_T *chan;
-} CPC_USB_T;
-
-#define CPCTable CPCUSB_Table
-
-#define CPC_DRIVER_VERSION "0.724"
-#define CPC_DRIVER_SERIAL "not applicable"
-
-#define OBUF_SIZE 255 // 4096
-
-/* read timeouts -- RD_NAK_TIMEOUT * RD_EXPIRE = Number of seconds */
-#define RD_NAK_TIMEOUT (10*HZ) /* Default number of X seconds to wait */
-#define RD_EXPIRE 12 /* Number of attempts to wait X seconds */
-
-#define CPC_USB_BASE_MNR 0 /* CPC-USB start at minor 0 */
-
-#endif
+++ /dev/null
-#ifndef _SJA2M16C_H
-#define _SJA2M16C_H
-
-#include "cpc.h"
-
-#define BAUDRATE_TOLERANCE_PERCENT 1
-#define SAMPLEPOINT_TOLERANCE_PERCENT 5
-#define SAMPLEPOINT_UPPER_LIMIT 88
-
-/* M16C parameters */
-struct FIELD_C0CONR {
- unsigned int brp:4;
- unsigned int sam:1;
- unsigned int pr:3;
- unsigned int dummy:8;
-};
-struct FIELD_C1CONR {
- unsigned int ph1:3;
- unsigned int ph2:3;
- unsigned int sjw:2;
- unsigned int dummy:8;
-};
-typedef union C0CONR {
- unsigned char c0con;
- struct FIELD_C0CONR bc0con;
-} C0CONR_T;
-typedef union C1CONR {
- unsigned char c1con;
- struct FIELD_C1CONR bc1con;
-} C1CONR_T;
-
-#define SJA_TSEG1 ((pParams->btr1 & 0x0f)+1)
-#define SJA_TSEG2 (((pParams->btr1 & 0x70)>>4)+1)
-#define SJA_BRP ((pParams->btr0 & 0x3f)+1)
-#define SJA_SJW ((pParams->btr0 & 0xc0)>>6)
-#define SJA_SAM ((pParams->btr1 & 0x80)>>7)
-int baudrate_m16c(int clk, int brp, int pr, int ph1, int ph2);
-int samplepoint_m16c(int brp, int pr, int ph1, int ph2);
-int SJA1000_TO_M16C_BASIC_Params(CPC_MSG_T *pMsg);
-
-#endif
+++ /dev/null
-/****************************************************************************
-*
-* Copyright (c) 2003,2004 by EMS Dr. Thomas Wuensche
-*
-* - All rights reserved -
-*
-* This code is provided "as is" without warranty of any kind, either
-* expressed or implied, including but not limited to the liability
-* concerning the freedom from material defects, the fitness for parti-
-* cular purposes or the freedom of proprietary rights of third parties.
-*
-*****************************************************************************
-* Module name.: cpcusb
-*****************************************************************************
-* Include file: cpc.h
-*****************************************************************************
-* Project.....: Windows Driver Development Kit
-* Filename....: sja2m16c.cpp
-* Authors.....: (GU) Gerhard Uttenthaler
-* (CS) Christian Schoett
-*****************************************************************************
-* Short descr.: converts baudrate between SJA1000 and M16C
-*****************************************************************************
-* Description.: handles the baudrate conversion from SJA1000 parameters to
-* M16C parameters
-*****************************************************************************
-* Address : EMS Dr. Thomas Wuensche
-* Sonnenhang 3
-* D-85304 Ilmmuenster
-* Tel. : +49-8441-490260
-* Fax. : +49-8441-81860
-* email: support@ems-wuensche.com
-*****************************************************************************
-* History
-*****************************************************************************
-* Version Date Auth Remark
-*
-* 01.00 ?? GU - initial release
-* 01.10 ?????????? CS - adapted to fit into the USB Windows driver
-* 02.00 18.08.2004 GU - improved the baudrate calculating algorithm
-* - implemented acceptance filtering
-* 02.10 10.09.2004 CS - adapted to fit into the USB Windows driver
-*****************************************************************************
-* ToDo's
-*****************************************************************************
-*/
-
-/****************************************************************************/
-/* I N C L U D E S
-*/
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/module.h>
-#include <linux/poll.h>
-#include <linux/smp_lock.h>
-#include <linux/completion.h>
-#include <asm/uaccess.h>
-#include <linux/usb.h>
-
-#include "cpc.h"
-#include "cpc_int.h"
-#include "cpcusb.h"
-
-#include "sja2m16c.h"
-
-/*********************************************************************/
-int baudrate_m16c(int clk, int brp, int pr, int ph1, int ph2)
-{
- return (16000000 / (1 << clk)) / 2 / (brp + 1) / (1 + pr + 1 +
- ph1 + 1 + ph2 +
- 1);
-}
-
-
-/*********************************************************************/
-int samplepoint_m16c(int brp, int pr, int ph1, int ph2)
-{
- return (100 * (1 + pr + 1 + ph1 + 1)) / (1 + pr + 1 + ph1 + 1 +
- ph2 + 1);
-}
-
-
-/****************************************************************************
-* Function.....: SJA1000_TO_M16C_BASIC_Params
-*
-* Task.........: This routine converts SJA1000 CAN btr parameters into M16C
-* parameters based on the sample point and the error. In
-* addition it converts the acceptance filter parameters to
-* suit the M16C parameters
-*
-* Parameters...: None
-*
-* Return values: None
-*
-* Comments.....:
-*****************************************************************************
-* History
-*****************************************************************************
-* 19.01.2005 CS - modifed the conversion of SJA1000 filter params into
-* M16C params. Due to compatibility reasons with the
-* older 82C200 CAN controller the SJA1000
-****************************************************************************/
-int SJA1000_TO_M16C_BASIC_Params(CPC_MSG_T * in)
-{
- int sjaBaudrate;
- int sjaSamplepoint;
- int *baudrate_error; // BRP[0..15], PR[0..7], PH1[0..7], PH2[0..7]
- int *samplepoint_error; // BRP[0..15], PR[0..7], PH1[0..7], PH2[0..7]
- int baudrate_error_merk;
- int clk, brp, pr, ph1, ph2;
- int clk_merk, brp_merk, pr_merk, ph1_merk, ph2_merk;
- int index;
- unsigned char acc_code0, acc_code1, acc_code2, acc_code3;
- unsigned char acc_mask0, acc_mask1, acc_mask2, acc_mask3;
- CPC_MSG_T * out;
- C0CONR_T c0con;
- C1CONR_T c1con;
- int tmpAccCode;
- int tmpAccMask;
-
- // we have to convert the parameters into M16C parameters
- CPC_SJA1000_PARAMS_T * pParams;
-
- // check if the type is CAN parameters and if we have to convert the given params
- if (in->type != CPC_CMD_T_CAN_PRMS
- || in->msg.canparams.cc_type != SJA1000)
- return 0;
- pParams =
- (CPC_SJA1000_PARAMS_T *) & in->msg.canparams.cc_params.sja1000;
- acc_code0 = pParams->acc_code0;
- acc_code1 = pParams->acc_code1;
- acc_code2 = pParams->acc_code2;
- acc_code3 = pParams->acc_code3;
- acc_mask0 = pParams->acc_mask0;
- acc_mask1 = pParams->acc_mask1;
- acc_mask2 = pParams->acc_mask2;
- acc_mask3 = pParams->acc_mask3;
-
-#ifdef _DEBUG_OUTPUT_CAN_PARAMS
- info("acc_code0: %2.2Xh\n", acc_code0);
- info("acc_code1: %2.2Xh\n", acc_code1);
- info("acc_code2: %2.2Xh\n", acc_code2);
- info("acc_code3: %2.2Xh\n", acc_code3);
- info("acc_mask0: %2.2Xh\n", acc_mask0);
- info("acc_mask1: %2.2Xh\n", acc_mask1);
- info("acc_mask2: %2.2Xh\n", acc_mask2);
- info("acc_mask3: %2.2Xh\n", acc_mask3);
-
-#endif /* */
- if (!
- (baudrate_error =
- (int *) vmalloc(sizeof(int) * 16 * 8 * 8 * 8 * 5))) {
- err("Could not allocate memory\n");
- return -3;
- }
- if (!
- (samplepoint_error =
- (int *) vmalloc(sizeof(int) * 16 * 8 * 8 * 8 * 5))) {
- err("Could not allocate memory\n");
- vfree(baudrate_error);
- return -3;
- }
- memset(baudrate_error, 0xff, sizeof(baudrate_error));
- memset(samplepoint_error, 0xff, sizeof(baudrate_error));
- sjaBaudrate =
- 16000000 / 2 / SJA_BRP / (1 + SJA_TSEG1 + SJA_TSEG2);
- sjaSamplepoint =
- 100 * (1 + SJA_TSEG1) / (1 + SJA_TSEG1 + SJA_TSEG2);
- if (sjaBaudrate == 0) {
- vfree(baudrate_error);
- vfree(samplepoint_error);
- return -2;
- }
-
-#ifdef _DEBUG_OUTPUT_CAN_PARAMS
- info("\nStarting SJA CAN params\n");
- info("-------------------------\n");
- info("TS1 : %2.2Xh TS2 : %2.2Xh\n", SJA_TSEG1, SJA_TSEG2);
- info("BTR0 : %2.2Xh BTR1: %2.2Xh\n", pParams->btr0,
- pParams->btr1);
- info("Baudrate: %d.%dkBaud\n", sjaBaudrate / 1000,
- sjaBaudrate % 1000);
- info("Sample P: 0.%d\n", sjaSamplepoint);
- info("\n");
-
-#endif /* */
- c0con.bc0con.sam = SJA_SAM;
- c1con.bc1con.sjw = SJA_SJW;
-
- // calculate errors for all baudrates
- index = 0;
- for (clk = 0; clk < 5; clk++) {
- for (brp = 0; brp < 16; brp++) {
- for (pr = 0; pr < 8; pr++) {
- for (ph1 = 0; ph1 < 8; ph1++) {
- for (ph2 = 0; ph2 < 8; ph2++) {
- baudrate_error[index] =
- 100 *
- abs(baudrate_m16c
- (clk, brp, pr, ph1,
- ph2) -
- sjaBaudrate) /
- sjaBaudrate;
- samplepoint_error[index] =
- abs(samplepoint_m16c
- (brp, pr, ph1,
- ph2) -
- sjaSamplepoint);
-
-#if 0
- info
- ("Baudrate : %d kBaud\n",
- baudrate_m16c(clk,
- brp, pr,
- ph1,
- ph2));
- info
- ("Baudrate Error: %d\n",
- baudrate_error
- [index]);
- info
- ("Sample P Error: %d\n",
- samplepoint_error
- [index]);
- info
- ("clk : %d\n",
- clk);
-
-#endif /* */
- index++;
- }
- }
- }
- }
- }
-
- // mark all baudrate_error entries which are outer limits
- index = 0;
- for (clk = 0; clk < 5; clk++) {
- for (brp = 0; brp < 16; brp++) {
- for (pr = 0; pr < 8; pr++) {
- for (ph1 = 0; ph1 < 8; ph1++) {
- for (ph2 = 0; ph2 < 8; ph2++) {
- if ((baudrate_error[index]
- >
- BAUDRATE_TOLERANCE_PERCENT)
- ||
- (samplepoint_error
- [index] >
- SAMPLEPOINT_TOLERANCE_PERCENT)
- ||
- (samplepoint_m16c
- (brp, pr, ph1,
- ph2) >
- SAMPLEPOINT_UPPER_LIMIT))
- {
- baudrate_error
- [index] = -1;
- } else
- if (((1 + pr + 1 +
- ph1 + 1 + ph2 +
- 1) < 8)
- ||
- ((1 + pr + 1 +
- ph1 + 1 + ph2 +
- 1) > 25)) {
- baudrate_error
- [index] = -1;
- }
-
-#if 0
- else {
- info
- ("Baudrate : %d kBaud\n",
- baudrate_m16c
- (clk, brp, pr,
- ph1, ph2));
- info
- ("Baudrate Error: %d\n",
- baudrate_error
- [index]);
- info
- ("Sample P Error: %d\n",
- samplepoint_error
- [index]);
- }
-
-#endif /* */
- index++;
- }
- }
- }
- }
- }
-
- // find list of minimum of baudrate_error within unmarked entries
- clk_merk = brp_merk = pr_merk = ph1_merk = ph2_merk = 0;
- baudrate_error_merk = 100;
- index = 0;
- for (clk = 0; clk < 5; clk++) {
- for (brp = 0; brp < 16; brp++) {
- for (pr = 0; pr < 8; pr++) {
- for (ph1 = 0; ph1 < 8; ph1++) {
- for (ph2 = 0; ph2 < 8; ph2++) {
- if (baudrate_error[index]
- != -1) {
- if (baudrate_error
- [index] <
- baudrate_error_merk)
- {
- baudrate_error_merk
- =
- baudrate_error
- [index];
- brp_merk =
- brp;
- pr_merk =
- pr;
- ph1_merk =
- ph1;
- ph2_merk =
- ph2;
- clk_merk =
- clk;
-
-#if 0
- info
- ("brp: %2.2Xh pr: %2.2Xh ph1: %2.2Xh ph2: %2.2Xh\n",
- brp,
- pr,
- ph1,
- ph2);
- info
- ("Baudrate : %d kBaud\n",
- baudrate_m16c
- (clk,
- brp,
- pr,
- ph1,
- ph2));
- info
- ("Baudrate Error: %d\n",
- baudrate_error
- [index]);
- info
- ("Sample P Error: %d\n",
- samplepoint_error
- [index]);
-
-#endif /* */
- }
- }
- index++;
- }
- }
- }
- }
- }
- if (baudrate_error_merk == 100) {
- info("ERROR: Could not convert CAN init parameter\n");
- vfree(baudrate_error);
- vfree(samplepoint_error);
- return -1;
- }
-
- // setting m16c CAN parameter
- c0con.bc0con.brp = brp_merk;
- c0con.bc0con.pr = pr_merk;
- c1con.bc1con.ph1 = ph1_merk;
- c1con.bc1con.ph2 = ph2_merk;
-
-#ifdef _DEBUG_OUTPUT_CAN_PARAMS
- info("\nResulting M16C CAN params\n");
- info("-------------------------\n");
- info("clk : %2.2Xh\n", clk_merk);
- info("ph1 : %2.2Xh ph2: %2.2Xh\n", c1con.bc1con.ph1 + 1,
- c1con.bc1con.ph2 + 1);
- info("pr : %2.2Xh brp: %2.2Xh\n", c0con.bc0con.pr + 1,
- c0con.bc0con.brp + 1);
- info("sjw : %2.2Xh sam: %2.2Xh\n", c1con.bc1con.sjw,
- c0con.bc0con.sam);
- info("co1 : %2.2Xh co0: %2.2Xh\n", c1con.c1con, c0con.c0con);
- info("Baudrate: %d.%dBaud\n",
- baudrate_m16c(clk_merk, c0con.bc0con.brp, c0con.bc0con.pr,
- c1con.bc1con.ph1, c1con.bc1con.ph2) / 1000,
- baudrate_m16c(clk_merk, c0con.bc0con.brp, c0con.bc0con.pr,
- c1con.bc1con.ph1, c1con.bc1con.ph2) % 1000);
- info("Sample P: 0.%d\n",
- samplepoint_m16c(c0con.bc0con.brp, c0con.bc0con.pr,
- c1con.bc1con.ph1, c1con.bc1con.ph2));
- info("\n");
-
-#endif /* */
- out = in;
- out->type = 6;
- out->length = sizeof(CPC_M16C_BASIC_PARAMS_T) + 1;
- out->msg.canparams.cc_type = M16C_BASIC;
- out->msg.canparams.cc_params.m16c_basic.con0 = c0con.c0con;
- out->msg.canparams.cc_params.m16c_basic.con1 = c1con.c1con;
- out->msg.canparams.cc_params.m16c_basic.ctlr0 = 0x4C;
- out->msg.canparams.cc_params.m16c_basic.ctlr1 = 0x00;
- out->msg.canparams.cc_params.m16c_basic.clk = clk_merk;
- out->msg.canparams.cc_params.m16c_basic.acc_std_code0 =
- acc_code0;
- out->msg.canparams.cc_params.m16c_basic.acc_std_code1 = acc_code1;
-
-// info("code0: 0x%2.2X, code1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_code0, out->msg.canparams.cc_params.m16c_basic.acc_std_code1);
- tmpAccCode = (acc_code1 >> 5) + (acc_code0 << 3);
- out->msg.canparams.cc_params.m16c_basic.acc_std_code0 =
- (unsigned char) tmpAccCode;
- out->msg.canparams.cc_params.m16c_basic.acc_std_code1 =
- (unsigned char) (tmpAccCode >> 8);
-
-// info("code0: 0x%2.2X, code1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_code0, out->msg.canparams.cc_params.m16c_basic.acc_std_code1);
- out->msg.canparams.cc_params.m16c_basic.acc_std_mask0 =
- ~acc_mask0;
- out->msg.canparams.cc_params.m16c_basic.acc_std_mask1 =
- ~acc_mask1;
-
-// info("mask0: 0x%2.2X, mask1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_mask0, out->msg.canparams.cc_params.m16c_basic.acc_std_mask1);
- tmpAccMask = ((acc_mask1) >> 5) + ((acc_mask0) << 3);
-
-// info("tmpAccMask: 0x%4.4X\n", tmpAccMask);
- out->msg.canparams.cc_params.m16c_basic.acc_std_mask0 =
- (unsigned char) ~tmpAccMask;
- out->msg.canparams.cc_params.m16c_basic.acc_std_mask1 =
- (unsigned char) ~(tmpAccMask >> 8);
-
-// info("mask0: 0x%2.2X, mask1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_mask0, out->msg.canparams.cc_params.m16c_basic.acc_std_mask1);
- out->msg.canparams.cc_params.m16c_basic.acc_ext_code0 =
- (unsigned char) tmpAccCode;
- out->msg.canparams.cc_params.m16c_basic.acc_ext_code1 =
- (unsigned char) (tmpAccCode >> 8);
- out->msg.canparams.cc_params.m16c_basic.acc_ext_code2 = acc_code2;
- out->msg.canparams.cc_params.m16c_basic.acc_ext_code3 = acc_code3;
- out->msg.canparams.cc_params.m16c_basic.acc_ext_mask0 =
- (unsigned char) ~tmpAccMask;
- out->msg.canparams.cc_params.m16c_basic.acc_ext_mask1 =
- (unsigned char) ~(tmpAccMask >> 8);
- out->msg.canparams.cc_params.m16c_basic.acc_ext_mask2 =
- ~acc_mask2;
- out->msg.canparams.cc_params.m16c_basic.acc_ext_mask3 =
- ~acc_mask3;
- vfree(baudrate_error);
- vfree(samplepoint_error);
- return 0;
-}
-
-
projects / platform / kernel / linux-rpi.git / commitdiff