X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/a4c9ead4b64bd4de307f375c2ff313a7a07a06e0..5b857487a790f155e047cb13d272535a4a683d4b:/lincan/src/setup.c diff --git a/lincan/src/setup.c b/lincan/src/setup.c index c5bb40a..ac83789 100644 --- a/lincan/src/setup.c +++ b/lincan/src/setup.c @@ -14,180 +14,10 @@ #include "../include/setup.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); - 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); - -/** - * can_checked_malloc - memory allocation with registering of requested blocks - * @size: size of the requested block - * - * The function is used in the driver initialization phase to catch possible memory - * leaks for future driver finalization or case, that driver initialization fail. - * - * Return Value: pointer to the allocated memory or NULL in the case of fail - */ -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("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("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 address_p; -} - -/** - * can_checked_free - free memory allocated by can_checked_malloc() - * @address_p: pointer to the memory block - */ -int can_checked_free(void *address_p) -{ - struct mem_addr **mem_pptr; - struct mem_addr *mem_del=NULL; - -#ifdef DEBUG_MEM - DEBUGMSG("can_checked_free %p, mem_head=%p\n", address_p, mem_head); -#endif - - 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; - } - - CANMSG("can_checked_free: address %p not found on the mem list\n", address_p); - - kfree(address_p); - return -1; -} - - -/** - * can_del_mem_list - check for stale memory allocations at driver finalization - * - * Checks, if there are still some memory blocks allocated and releases memory - * occupied by such blocks back to the system - */ -int can_del_mem_list(void) -{ - struct mem_addr *mem; - -#ifdef DEBUG_MEM - DEBUGMSG("can_del_mem_list, mem_head=%p\n", mem_head); -#endif - if(mem_head == NULL) { - CANMSG("can_del_mem_list: no entries on the list - OK\n"); - return 0; - } - - 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; -} - -/** - * can_request_io_region - request IO space region - * @start: the first IO port address - * @n: number of the consecutive IO port addresses - * @name: name/label for the requested region - * - * The function hides system specific implementation of the feature. - * - * Return Value: returns positive value (1) in the case, that region could - * be reserved for the driver. Returns zero (0) if there is collision with - * other driver or region cannot be taken for some other reason. - */ -int can_request_io_region(unsigned long start, unsigned long n, const char *name) -{ - #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)) - if(check_region(start,n)) return 0; - request_region(start,n,name); - return 1; - #else - return (request_region(start,n,name))?1:0; - #endif -} - -/** - * can_release_io_region - release IO space region - * @start: the first IO port address - * @n: number of the consecutive IO port addresses - */ -void can_release_io_region(unsigned long start, unsigned long n) -{ - release_region(start,n); -} - -/** - * can_request_mem_region - request memory space region - * @start: the first memory port physical address - * @n: number of the consecutive memory port addresses - * @name: name/label for the requested region - * - * The function hides system specific implementation of the feature. - * - * Return Value: returns positive value (1) in the case, that region could - * be reserved for the driver. Returns zero (0) if there is collision with - * other driver or region cannot be taken for some other reason. - */ -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 -} - -/** - * can_release_mem_region - release memory space region - * @start: the first memory port physical address - * @n: number of the consecutive memory port addresses - */ -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 -} +int init_obj_struct(struct candevice_t *candev, struct canchip_t *hostchip, int objnr); /** * can_base_addr_fixup - relocates board physical memory addresses to the CPU accessible ones @@ -277,7 +107,7 @@ int register_obj_struct(struct msgobj_t *obj, int minorbase) * * Return Value: returns negative number in the case of fail */ -int register_chip_struct(struct chip_t *chip, int minorbase) +int register_chip_struct(struct canchip_t *chip, int minorbase) { static int next_chip_slot=0; int i; @@ -402,7 +232,7 @@ int init_device_struct(int card, int *chan_param_idx_p, int *irq_param_idx_p) for (chipnr=0; chipnr < candev->nr_all_chips; chipnr++) { int m=minor[*chan_param_idx_p+chipnr]; - struct chip_t *chip=candev->chip[chipnr]; + struct canchip_t *chip=candev->chip[chipnr]; int objnr; register_chip_struct(chip, m); @@ -442,23 +272,23 @@ int init_device_struct(int card, int *chan_param_idx_p, int *irq_param_idx_p) * @baudrate: baudrate in the units of 1Bd * * Chip structure is allocated and chip specific operations are filled by - * call to board specific init_chip_data() function and generic - * init_chipspecops() function. The message objects are generated by + * call to board specific init_chip_data() which calls chip specific + * fill_chipspecops(). The message objects are generated by * calls to init_obj_struct() function. * * Return Value: returns negative number in the case of fail */ int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudrate) { - struct chip_t *chip; + struct canchip_t *chip; int objnr; int ret; - candev->chip[chipnr]=(struct chip_t *)can_checked_malloc(sizeof(struct chip_t)); + candev->chip[chipnr]=(struct canchip_t *)can_checked_malloc(sizeof(struct canchip_t)); if ((chip=candev->chip[chipnr])==NULL) return -ENOMEM; - memset(chip, 0, sizeof(struct chip_t)); + memset(chip, 0, sizeof(struct canchip_t)); chip->write_register=candev->hwspecops->write_register; chip->read_register=candev->hwspecops->read_register; @@ -474,9 +304,7 @@ int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudr chip->baudrate=baudrate; chip->flags=0x0; - candev->hwspecops->init_chip_data(candev,chipnr); - - if (init_chipspecops(candev,chipnr)) + if(candev->hwspecops->init_chip_data(candev,chipnr)<0) return -ENODEV; for (objnr=0; objnrmax_objects; objnr++) { @@ -499,7 +327,7 @@ int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudr * * Return Value: returns negative number in the case of fail */ -int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int objnr) +int init_obj_struct(struct candevice_t *candev, struct canchip_t *hostchip, int objnr) { struct canque_ends_t *qends; struct msgobj_t *obj; @@ -565,88 +393,3 @@ int init_hwspecops(struct candevice_t *candev, int *irqnum_p) return 0; } - - -/** - * init_chipspecops - fills chip specific operations for board for known chip types - * @candev: pointer to the corresponding CAN device/board - * @chipnr: index of the chip in the device/board structure - * - * The function fills chip specific operations for next known generic chip - * types "i82527", "sja1000", "sja1000p" (PeliCAN). Other non generic chip types - * operations has to be initialized in the board specific init_chip_data() function. - * - * Return Value: returns negative number in the case of fail - */ -int init_chipspecops(struct candevice_t *candev, int chipnr) -{ - if (!strcmp(candev->chip[chipnr]->chip_type,"i82527")) { - candev->chip[chipnr]->max_objects=15; - i82527_register(candev->chip[chipnr]->chipspecops); - } - if (!strcmp(candev->chip[chipnr]->chip_type,"sja1000")) { - candev->chip[chipnr]->max_objects=1; - sja1000_register(candev->chip[chipnr]->chipspecops); - } - if (!strcmp(candev->chip[chipnr]->chip_type,"sja1000p")) { - candev->chip[chipnr]->max_objects=1; - sja1000p_register(candev->chip[chipnr]->chipspecops); - } - - return 0; -} - -#ifndef CAN_WITH_RTL - -/** - * can_chip_setup_irq - attaches chip to the system interrupt processing - * @chip: pointer to CAN chip structure - * - * Return Value: returns negative number in the case of fail - */ -int can_chip_setup_irq(struct chip_t *chip) -{ - if(chip==NULL) - return -1; - if(!chip->chipspecops->irq_handler) - return 0; - - if ((chip->flags & CHIP_IRQ_VME) == 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; - } - } else { -#ifdef CAN_ENABLE_VME_SUPPORT - /* TODO: Move here the irq setup from - * unican_vme_request_io(). To do this, the VME bridge - * driver should be modified. */ -#endif - } - return 1; -} - - -/** - * can_chip_free_irq - unregisters chip interrupt handler from the system - * @chip: pointer to CAN chip structure - */ -void can_chip_free_irq(struct chip_t *chip) -{ - if((chip->flags & CHIP_IRQ_SETUP) && (chip->chip_irq>=0)) { - if ((chip->flags & CHIP_IRQ_VME) == 0) - free_irq(chip->chip_irq, chip); - else { -#ifdef CAN_ENABLE_VME_SUPPORT - /* TODO: Move here the irq cleanup from - * unican_vme_release_io(). To do this, the VME bridge - * driver should be modified. */ -#endif - } - chip->flags &= ~CHIP_IRQ_SETUP; - } -} - -#endif /*CAN_WITH_RTL*/