* Version lincan-0.2 9 Jul 2003
*/
-#define __NO_VERSION__
-#include <linux/module.h>
-
-#include <linux/autoconf.h>
-
-#include <linux/version.h>
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
-#include <linux/malloc.h>
-#else
-#include <linux/slab.h>
-#endif
-#include <linux/fs.h>
-#include <linux/ioport.h>
-
-#include ".supported_cards.h"
-
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
#include "../include/main.h"
#include "../include/devcommon.h"
#include "../include/setup.h"
-#include "../include/pip.h"
-#include "../include/pccan.h"
-#include "../include/smartcan.h"
-#include "../include/pc-i03.h"
-#include "../include/pcm3680.h"
-#include "../include/m437.h"
-#include "../include/template.h"
-#include "../include/i82527.h"
-#include "../include/aim104.h"
-#include "../include/pcccan.h"
+#include "../include/finish.h"
extern int sja1000_register(struct chipspecops_t *chipspecops);
extern int sja1000p_register(struct chipspecops_t *chipspecops);
extern int i82527_register(struct chipspecops_t *chipspecops);
-extern int template_register(struct hwspecops_t *hwspecops);
-extern int pip5_register(struct hwspecops_t *hwspecops);
-extern int pip6_register(struct hwspecops_t *hwspecops);
-extern int smartcan_register(struct hwspecops_t *hwspecops);
-extern int pccanf_register(struct hwspecops_t *hwspecops);
-extern int pccand_register(struct hwspecops_t *hwspecops);
-extern int pccanq_register(struct hwspecops_t *hwspecops);
-extern int nsi_register(struct hwspecops_t *hwspecops);
-extern int cc104_register(struct hwspecops_t *hwspecops);
-extern int pci03_register(struct hwspecops_t *hwspecops);
-extern int pcm3680_register(struct hwspecops_t *hwspecops);
-extern int aim104_register(struct hwspecops_t *hwspecops);
-extern int pcccan_register(struct hwspecops_t *hwspecops);
-extern int ssv_register(struct hwspecops_t *hwspecops);
-extern int bfadcan_register(struct hwspecops_t *hwspecops);
-extern int pikronisa_register(struct hwspecops_t *hwspecops);
-
-int init_device_struct(int card);
-int init_hwspecops(struct candevice_t *candev);
-int init_chip_struct(struct candevice_t *candev);
-int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int minorbase);
+
+int init_hwspecops(struct candevice_t *candev, int *irqnum_p);
+int init_device_struct(int card, int *chan_param_idx_p, int *irq_param_idx_p);
+int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudrate);
+int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int objnr);
int init_chipspecops(struct candevice_t *candev, int chipnr);
-int add_mem_to_list(void *address_p)
+void *can_checked_malloc(size_t size)
{
struct mem_addr *mem_new;
+ void *address_p;
+
+ address_p=kmalloc(size,GFP_KERNEL);
+ if(address_p == NULL) {
+ CANMSG("can_checked_malloc: out of the memory\n");
+ return NULL;
+ }
#ifdef DEBUG_MEM
- DEBUGMSG("add_mem_to_list %p, mem_head=%p\n",address_p, mem_head);
- return 0;
+ DEBUGMSG("can_checked_malloc: allocated %d bytes at %p, mem_head=%p\n",
+ (int)size, address_p, mem_head);
#endif
mem_new=(struct mem_addr *)kmalloc(sizeof(struct mem_addr),GFP_KERNEL);
if (mem_new == NULL) {
- CANMSG("Memory list error.\n");
- return -ENOMEM;
+ CANMSG("can_checked_malloc: memory list allocation error.\n");
+ kfree(address_p);
+ return NULL;
}
mem_new->next=mem_head;
mem_new->address=address_p;
+ mem_new->size=size;
mem_head=mem_new;
- return 0;
+ return address_p;
}
-int del_mem_from_list(void *address_p)
+int can_checked_free(void *address_p)
{
- struct mem_addr *mem_search=NULL;
- struct mem_addr *mem_delete=NULL;
+ struct mem_addr **mem_pptr;
+ struct mem_addr *mem_del=NULL;
#ifdef DEBUG_MEM
- DEBUGMSG("del_mem_from_list %p, mem_head=%p\n", address_p, mem_head);
- return 0;
+ DEBUGMSG("can_checked_free %p, mem_head=%p\n", address_p, mem_head);
#endif
- if(mem_head == NULL) {
- CANMSG("del_mem_from_list: mem_head == NULL address_p=%p!\n",
- address_p);
- return 0;
- }
-
- mem_search = mem_head;
- if (mem_head->address == address_p) {
- kfree(mem_head->address);
- mem_head=mem_head->next;
- kfree(mem_search);
- }
- else {
- while (mem_search->next->address != address_p)
- mem_search=mem_search->next;
- kfree(mem_search->next->address);
- mem_delete=mem_search->next;
- mem_search->next=mem_search->next->next;
- kfree(mem_delete);
+ for(mem_pptr = &mem_head; (mem_del = *mem_pptr); mem_pptr = &mem_del->next) {
+ if (mem_del->address != address_p)
+ continue;
+ *mem_pptr=mem_del->next;
+ kfree(mem_del);
+ kfree(address_p);
+ return 0;
}
- return 0;
+
+ CANMSG("can_checked_free: address %p not found on the mem list\n", address_p);
+
+ kfree(address_p);
+ return -1;
}
-int del_mem_list(void)
+int can_del_mem_list(void)
{
- struct mem_addr *mem_old;
+ struct mem_addr *mem;
#ifdef DEBUG_MEM
- DEBUGMSG("del_mem_list, mem_head=%p\n", mem_head);
- return 0;
+ DEBUGMSG("can_del_mem_list, mem_head=%p\n", mem_head);
#endif
if(mem_head == NULL) {
- CANMSG("del_mem_list: mem_head == NULL!\n");
+ CANMSG("can_del_mem_list: no entries on the list - OK\n");
return 0;
}
- while (mem_head->next != NULL) {
- mem_old=mem_head;
- kfree(mem_old->address);
- mem_head=mem_old->next;
- kfree(mem_old);
+ while((mem=mem_head) != NULL) {
+ mem_head=mem->next;
+ CANMSG("can_del_mem_list: deleting %p with size %d\n",
+ mem->address, (int)mem->size);
+ kfree(mem->address);
+ kfree(mem);
}
return 0;
release_region(start,n);
}
+int can_request_mem_region(unsigned long start, unsigned long n, const char *name)
+{
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
+ return 1;
+ #else
+ return (request_mem_region(start,n,name))?1:0;
+ #endif
+}
+
+void can_release_mem_region(unsigned long start, unsigned long n)
+{
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
+ return;
+ #else
+ release_mem_region(start,n);
+ #endif
+}
+
/* This function shifts all base address structures acording to address
translation between physical and virtual address mappings */
int can_base_addr_fixup(struct candevice_t *candev, unsigned long new_base)
return 0;
}
+
+int register_obj_struct(struct msgobj_t *obj, int minorbase)
+{
+ static int next_minor=0;
+ int i;
+
+ if(minorbase>=0)
+ next_minor=minorbase;
+ if(next_minor>=MAX_TOT_MSGOBJS)
+ next_minor=0;
+ i=next_minor;
+ do{
+ if(objects_p[i]==NULL){
+ objects_p[i]=obj;
+ obj->minor=i;
+ next_minor=i+1;
+ return 0;
+ }
+ if(++i >= MAX_TOT_MSGOBJS) i=0;
+ }while(i!=next_minor);
+ obj->minor=-1;
+ return -1;
+}
+
+
+int register_chip_struct(struct chip_t *chip, int minorbase)
+{
+ static int next_chip_slot=0;
+ int i;
+
+ if(next_chip_slot>=MAX_TOT_CHIPS)
+ next_chip_slot=0;
+ i=next_chip_slot;
+ do{
+ if(chips_p[i]==NULL){
+ chips_p[i]=chip;
+
+ next_chip_slot=i+1;
+ return 0;
+ }
+ if(++i >= MAX_TOT_CHIPS) i=0;
+ }while(i!=next_chip_slot);
+ return -1;
+}
+
+
/* The function init_hw_struct is used to initialize the hardware structure. */
int init_hw_struct(void)
{
int i=0;
+ int irq_param_idx=0;
+ int chan_param_idx=0;
hardware_p->nr_boards=0;
while ( (hw[i] != NULL) & (i < MAX_HW_CARDS) ) {
hardware_p->nr_boards++;
- if (init_device_struct(i)) {
+ if (init_device_struct(i, &chan_param_idx, &irq_param_idx)) {
CANMSG("Error initializing candevice_t structures.\n");
return -ENODEV;
}
/* The function init_device_struct is used to initialize a single device
* structure.
*/
-int init_device_struct(int card)
+int init_device_struct(int card, int *chan_param_idx_p, int *irq_param_idx_p)
{
struct candevice_t *candev;
+ int ret;
+ int irqnum;
+ int chipnr;
+ long bd;
+ int irqsig=-1;
- candev=(struct candevice_t *)kmalloc(sizeof(struct candevice_t),GFP_KERNEL);
+ candev=(struct candevice_t *)can_checked_malloc(sizeof(struct candevice_t));
if (candev==NULL)
return -ENOMEM;
- else
- if ( add_mem_to_list(candev) )
- return -ENOMEM;
memset(candev, 0, sizeof(struct candevice_t));
candev->io_addr=io[card];
candev->dev_base_addr=io[card];
- candev->hwspecops=(struct hwspecops_t *)kmalloc(sizeof(struct hwspecops_t),GFP_KERNEL);
+ candev->hwspecops=(struct hwspecops_t *)can_checked_malloc(sizeof(struct hwspecops_t));
if (candev->hwspecops==NULL)
- return -ENOMEM;
- else
- if ( add_mem_to_list(candev->hwspecops) )
- return -ENOMEM;
+ goto error_nomem;
- if (init_hwspecops(candev))
- return -ENODEV;
+ memset(candev->hwspecops, 0, sizeof(struct hwspecops_t));
+
+ if (init_hwspecops(candev, &irqnum))
+ goto error_nodev;
if (candev->hwspecops->init_hw_data(candev))
- return -ENODEV;
+ goto error_nodev;
- if (init_chip_struct(candev))
- return -ENODEV;
+ /* Alocate and initialize the chip structures */
+ for (chipnr=0; chipnr < candev->nr_all_chips; chipnr++) {
+
+ if(chipnr<irqnum)
+ irqsig=irq[*irq_param_idx_p+chipnr];
+
+ bd=baudrate[*chan_param_idx_p+chipnr];
+ if(!bd) bd=baudrate[0];
+
+ if ((ret=init_chip_struct(candev, chipnr, irqsig, bd*1000)))
+ goto error_chip;
+ }
+
+
+
+ for (chipnr=0; chipnr < candev->nr_all_chips; chipnr++) {
+ int m=minor[*chan_param_idx_p+chipnr];
+ struct chip_t *chip=candev->chip[chipnr];
+ int objnr;
+
+ register_chip_struct(chip, m);
+
+ for (objnr=0; objnr<chip->max_objects; objnr++) {
+ register_obj_struct(chip->msgobj[objnr], m);
+ if(m>=0) m++;
+ }
+ }
+
+ *irq_param_idx_p += irqnum;
+ *chan_param_idx_p += candev->nr_all_chips;
return 0;
+
+ error_nodev:
+ ret=-ENODEV;
+ error_chip:
+ candevice_done(candev);
+ goto error_both;
+
+ error_nomem:
+ ret=-ENOMEM;
+
+ error_both:
+ hardware_p->candevice[card]=NULL;
+ can_checked_free(candev);
+ return ret;
+
}
/* The function init_chip_struct is used to initialize all chip_t structures
* on one hardware board.
*/
-int init_chip_struct(struct candevice_t *candev)
+int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudrate)
{
- static int irq_count=0;
- int i=0;
+ struct chip_t *chip;
+ int objnr;
+ int ret;
- /* Alocate and initialize the chip structures */
- for (i=0; i < candev->nr_all_chips; i++) {
- candev->chip[i]=(struct chip_t *)kmalloc(sizeof(struct chip_t),GFP_KERNEL);
- if (candev->chip[i]==NULL)
- return -ENOMEM;
- else
- if ( add_mem_to_list(candev->chip[i]) )
- return -ENOMEM;
-
- memset(candev->chip[i], 0, sizeof(struct chip_t));
-
- candev->chip[i]->write_register=candev->hwspecops->write_register;
- candev->chip[i]->read_register=candev->hwspecops->read_register;
+ candev->chip[chipnr]=(struct chip_t *)can_checked_malloc(sizeof(struct chip_t));
+ if ((chip=candev->chip[chipnr])==NULL)
+ return -ENOMEM;
- candev->chip[i]->chipspecops=(struct chipspecops_t *)kmalloc(sizeof(struct chipspecops_t),GFP_KERNEL);
- if (candev->chip[i]->chipspecops==NULL)
- return -ENOMEM;
- else
- if ( add_mem_to_list(candev->chip[i]->chipspecops) )
- return -ENOMEM;
+ memset(chip, 0, sizeof(struct chip_t));
- chips_p[irq_count]=candev->chip[i];
- candev->chip[i]->chip_idx=i;
- candev->chip[i]->hostdevice=candev;
- candev->chip[i]->chip_irq=irq[irq_count];
- candev->chip[i]->flags=0x0;
+ chip->write_register=candev->hwspecops->write_register;
+ chip->read_register=candev->hwspecops->read_register;
- candev->hwspecops->init_chip_data(candev,i);
+ chip->chipspecops=can_checked_malloc(sizeof(struct chipspecops_t));
+ if (chip->chipspecops==NULL)
+ return -ENOMEM;
- if (init_chipspecops(candev,i))
- return -ENODEV;
+ chip->chip_idx=chipnr;
+ chip->hostdevice=candev;
+ chip->chip_irq=irq;
+ chip->baudrate=baudrate;
+ chip->flags=0x0;
- init_obj_struct(candev, candev->chip[i], minor[irq_count]);
+ candev->hwspecops->init_chip_data(candev,chipnr);
- irq_count++;
- }
+ if (init_chipspecops(candev,chipnr))
+ return -ENODEV;
+
+ for (objnr=0; objnr<chip->max_objects; objnr++) {
+ ret=init_obj_struct(candev, chip, objnr);
+ if(ret<0) return ret;
+ }
return 0;
}
-int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int minorbase)
+
+int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int objnr)
{
struct canque_ends_t *qends;
- static int obj_count=0;
- int i,max_objects;
struct msgobj_t *obj;
+ int ret;
- max_objects=hostchip->max_objects;
- for (i=0; i<max_objects; i++) {
- obj=(struct msgobj_t *)kmalloc(sizeof(struct msgobj_t),GFP_KERNEL);
- hostchip->msgobj[i]=obj;
- if (obj == NULL)
- return -ENOMEM;
- else
- if ( add_mem_to_list(obj) )
- return -ENOMEM;
-
- memset(obj, 0, sizeof(struct msgobj_t));
-
- atomic_set(&obj->obj_used,0);
- INIT_LIST_HEAD(&obj->obj_users);
- qends = (struct canque_ends_t *)kmalloc(sizeof(struct canque_ends_t), GFP_KERNEL);
- if(qends == NULL) return -ENOMEM;
- if(add_mem_to_list(qends)) return -ENOMEM;
- memset(qends, 0, sizeof(struct canque_ends_t));
- obj->hostchip=hostchip;
- obj->object=i+1;
- obj->qends=qends;
- obj->tx_qedge=NULL;
- obj->tx_slot=NULL;
- obj->flags = 0x0;
-
- canqueue_ends_init_chip(qends, hostchip, obj);
-
- if (minorbase == -1) minorbase=obj_count;
- if ((minorbase >= 0) && (minorbase+i<MAX_TOT_MSGOBJS)){
- objects_p[minorbase+i]=obj;
- obj->minor=minorbase+i;
- } else obj->minor=-1;
+ obj=(struct msgobj_t *)can_checked_malloc(sizeof(struct msgobj_t));
+ hostchip->msgobj[objnr]=obj;
+ if (obj == NULL)
+ return -ENOMEM;
- candev->hwspecops->init_obj_data(hostchip,i);
+ memset(obj, 0, sizeof(struct msgobj_t));
+ obj->minor=-1;
- obj_count++;
- }
+ atomic_set(&obj->obj_used,0);
+ INIT_LIST_HEAD(&obj->obj_users);
+ init_timer(&obj->tx_timeout);
+
+ qends = (struct canque_ends_t *)can_checked_malloc(sizeof(struct canque_ends_t));
+ if(qends == NULL) return -ENOMEM;
+ memset(qends, 0, sizeof(struct canque_ends_t));
+ obj->hostchip=hostchip;
+ obj->object=objnr+1;
+ obj->qends=qends;
+ obj->tx_qedge=NULL;
+ obj->tx_slot=NULL;
+ obj->obj_flags = 0x0;
+
+ ret=canqueue_ends_init_chip(qends, hostchip, obj);
+ if(ret<0) return ret;
+
+ ret=candev->hwspecops->init_obj_data(hostchip,objnr);
+ if(ret<0) return ret;
+
return 0;
}
-int init_hwspecops(struct candevice_t *candev)
+int init_hwspecops(struct candevice_t *candev, int *irqnum_p)
{
- #ifdef ENABLE_CARD_template
- if (!strcmp(candev->hwname,"template")) {
- template_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_pip
- if (!strcmp(candev->hwname,"pip5")) {
- pip5_register(candev->hwspecops);
- }
- else if (!strcmp(candev->hwname,"pip6")) {
- pip6_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_smartcan
- if (!strcmp(candev->hwname,"smartcan")) {
- smartcan_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_nsi
- if (!strcmp(candev->hwname,"nsican")) {
- nsi_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_cc_can104
- if (!strcmp(candev->hwname,"cc104")) {
- cc104_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_aim104
- if (!strcmp(candev->hwname,"aim104")) {
- aim104_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_pc_i03
- if (!strcmp(candev->hwname,"pc-i03")) {
- pci03_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_pcm3680
- if (!strcmp(candev->hwname,"pcm3680")) {
- pcm3680_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_pccan
- if (!strcmp(candev->hwname,"pccan-f") |
- !strcmp(candev->hwname,"pccan-s") ) {
- pccanf_register(candev->hwspecops);
- }
- if (!strcmp(candev->hwname,"pccan-d")) {
- pccand_register(candev->hwspecops);
- }
- if (!strcmp(candev->hwname,"pccan-q")) {
- pccanq_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_m437
- if (!strcmp(candev->hwname,"m437")) {
- m437_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_pcccan
- if (!strcmp(candev->hwname,"pcccan")) {
- pcccan_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_ssv
- if (!strcmp(candev->hwname,"ssv")) {
- ssv_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_bfadcan
- if (!strcmp(candev->hwname,"bfadcan")) {
- bfadcan_register(candev->hwspecops);
- }
- #endif
- #ifdef ENABLE_CARD_pikronisa
- if (!strcmp(candev->hwname,"pikronisa")) {
- pikronisa_register(candev->hwspecops);
+ const struct boardtype_t *brp;
+
+ brp = boardtype_find(candev->hwname);
+
+ if(!brp) {
+ CANMSG("Sorry, hardware \"%s\" is currently not supported.\n",candev->hwname);
+ return -EINVAL;
}
- #endif
+
+ if(irqnum_p)
+ *irqnum_p=brp->irqnum;
+ brp->board_register(candev->hwspecops);
+
return 0;
}
+
int init_chipspecops(struct candevice_t *candev, int chipnr)
{
- candev->chip[chipnr]->max_objects=0;
-
if (!strcmp(candev->chip[chipnr]->chip_type,"i82527")) {
candev->chip[chipnr]->max_objects=15;
i82527_register(candev->chip[chipnr]->chipspecops);
return 0;
}
+
+#ifndef CAN_WITH_RTL
+
+int can_chip_setup_irq(struct chip_t *chip)
+{
+ if(chip==NULL)
+ return -1;
+ if(!chip->chipspecops->irq_handler)
+ return 0;
+
+ if (request_irq(chip->chip_irq,chip->chipspecops->irq_handler,SA_SHIRQ,DEVICE_NAME,chip))
+ return -1;
+ else {
+ DEBUGMSG("Registered interrupt %d\n",chip->chip_irq);
+ chip->flags |= CHIP_IRQ_SETUP;
+ }
+ return 1;
+}
+
+
+void can_chip_free_irq(struct chip_t *chip)
+{
+ if((chip->flags & CHIP_IRQ_SETUP) && (chip->chip_irq>=0)) {
+ free_irq(chip->chip_irq, chip);
+ chip->flags &= ~CHIP_IRQ_SETUP;
+ }
+}
+
+#endif /*CAN_WITH_RTL*/
projects / lincan.git / blobdiff