X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/3129fcd8094edcb910b708463fdf1a234f11fb55..ce073e28de97760024a221efb3dcd799a0b98969:/lincan/include/main.h diff --git a/lincan/include/main.h b/lincan/include/main.h index 17e8f55..2893ef7 100644 --- a/lincan/include/main.h +++ b/lincan/include/main.h @@ -7,41 +7,27 @@ * Version lincan-0.2 9 Jul 2003 */ -#include -#include -#include -#include -#include #include "./can.h" #include "./constants.h" +#include "./can_sysdep.h" #include "./can_queue.h" +#include "lincan_config.h" + +#ifdef CONFIG_OC_LINCANVME +#define CAN_ENABLE_VME_SUPPORT +#endif #ifdef CAN_DEBUG - #define DEBUGMSG(fmt,args...) printk(KERN_ERR "can.o (debug): " fmt,\ + #define DEBUGMSG(fmt,args...) can_printk(KERN_ERR "can.o (debug): " fmt,\ ##args) #else #define DEBUGMSG(fmt,args...) #endif -#define CANMSG(fmt,args...) printk(KERN_ERR "can.o: " fmt,##args) - -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,7)) - -#define MINOR_NR \ - (MINOR(file->f_dentry->d_inode->i_rdev)) +#define CANMSG(fmt,args...) can_printk(KERN_ERR "can.o: " fmt,##args) -#else /* Linux kernel > 2.5.7 */ -#define MINOR_NR \ - (minor(file->f_dentry->d_inode->i_rdev)) -#endif /* Linux kernel > 2.5.7 */ - -#if ((LINUX_VERSION_CODE < KERNEL_VERSION(2,5,68)) && !defined(IRQ_RETVAL)) - typedef void irqreturn_t; - #define IRQ_NONE - #define IRQ_HANDLED - #define IRQ_RETVAL(x) -#endif /* <=2.5.67 */ +extern can_spinlock_t canuser_manipulation_lock; /** * struct canhardware_t - structure representing pointers to all CAN boards @@ -53,7 +39,7 @@ struct canhardware_t { int nr_boards; struct rtr_id *rtr_queue; - spinlock_t rtr_lock; + can_spinlock_t rtr_lock; struct candevice_t *candevice[MAX_HW_CARDS]; }; @@ -72,6 +58,8 @@ struct canhardware_t { * @chip: array of pointers to the chip structures * @hwspecops: pointer to board specific operations * @hosthardware_p: pointer to the root hardware structure + * @sysdevptr: union reserved for pointer to bus specific + * device structure (case @pcidev is used for PCI devices) * * The structure represent configuration and state of associated board. * The driver infrastructure prepares this structure and calls @@ -102,6 +90,14 @@ struct candevice_t { struct hwspecops_t *hwspecops; struct canhardware_t *hosthardware_p; + + union { + void *anydev; + #ifdef CAN_ENABLE_PCI_SUPPORT + struct pci_dev *pcidev; + #endif /*CAN_ENABLE_PCI_SUPPORT*/ + } sysdevptr; + }; /** @@ -113,8 +109,10 @@ struct candevice_t { * @flags: chip flags: %CHIP_CONFIGURED .. chip is configured, * %CHIP_SEGMENTED .. access to the chip is segmented (mainly for i82527 chips) * @clock: chip base clock frequency in Hz - * @write_register: write chip register function copy - + * @baudrate: selected chip baudrate in Hz + * @write_register: write chip register function copy * @read_register: read chip register function copy + * @chip_data: pointer for optional chip specific data extension * @sja_cdr_reg: SJA specific register - * holds hardware specific options for the Clock Divider * register. Options defined in the sja1000.h file: @@ -140,6 +138,15 @@ struct candevice_t { * @chipspecops: pointer to the set of chip specific object filled by init_chip_data() function * @hostdevice: pointer to chip hosting board * @max_objects: maximal number of communication objects connected to this chip + * @chip_lock: reserved for synchronization of the chip supporting routines + * (not used in the current driver version) + * @worker_thread: chip worker thread ID (RT-Linux specific field) + * @pend_flags: holds information about pending interrupt and tx_wake() operations + * (RT-Linux specific field). Masks values: + * %MSGOBJ_TX_REQUEST .. some of the message objects requires tx_wake() call, + * %MSGOBJ_IRQ_REQUEST .. chip interrupt processing required + * %MSGOBJ_WORKER_WAKE .. marks, that worker thread should be waked + * for some of above reasons * * The fields @write_register and @read_register are copied from * corresponding fields from @hwspecops structure @@ -153,11 +160,14 @@ struct chip_t { int chip_irq; unsigned long chip_base_addr; unsigned int flags; - int clock; /* Chip clock in Hz */ + long clock; /* Chip clock in Hz */ + long baudrate; void (*write_register)(unsigned char data,unsigned long address); unsigned (*read_register)(unsigned long address); - + + void *chip_data; + unsigned short sja_cdr_reg; /* sja1000 only! */ unsigned short sja_ocr_reg; /* sja1000 only! */ unsigned short int_cpu_reg; /* intel 82527 only! */ @@ -170,7 +180,14 @@ struct chip_t { struct candevice_t *hostdevice; - int max_objects; /* 1 for sja1000, 15 for */ + int max_objects; /* 1 for sja1000, 15 for i82527 */ + + can_spinlock_t chip_lock; + + #ifdef CAN_WITH_RTL + pthread_t worker_thread; + unsigned long pend_flags; + #endif /*CAN_WITH_RTL*/ }; /** @@ -185,23 +202,33 @@ struct chip_t { * @tx_slot: slot holding transmitted message, slot is taken from * canque_test_outslot() call and is freed by canque_free_outslot() * or rescheduled canque_again_outslot() + * @tx_retry_cnt: transmission attempt counter + * @tx_timeout: can be used by chip driver to check for the transmission timeout * @rx_msg: temporary storage to hold received messages before * calling to canque_filter_msg2edges() * @hostchip: pointer to the &chip_t structure this object belongs to * @obj_used: counter of users (associated file structures for Linux * userspace clients) of this object * @obj_users: list of user structures of type &canuser_t. + * @obj_flags: message object specific flags. Masks values: + * %MSGOBJ_TX_REQUEST .. the message object requests TX activation + * %MSGOBJ_TX_LOCK .. some IRQ routine or callback on some CPU + * is running inside TX activation processing code */ struct msgobj_t { unsigned long obj_base_addr; unsigned int minor; /* associated device minor number */ unsigned int object; /* object number in chip_t +1 for debug printk */ - unsigned long flags; + unsigned long obj_flags; int ret; struct canque_ends_t *qends; + struct canque_edge_t *tx_qedge; struct canque_slot_t *tx_slot; + int tx_retry_cnt; + struct timer_list tx_timeout; + struct canmsg_t rx_msg; struct chip_t *hostchip; @@ -214,20 +241,33 @@ struct msgobj_t { /** * struct canuser_t - structure holding CAN user/client state + * @flags: used to distinguish Linux/RT-Linux type * @peers: for connection into list of object users * @qends: pointer to the ends structure corresponding for this user - * @file: pointer to open device file state structure * @msgobj: communication object the user is connected to * @rx_edge0: default receive queue for filter IOCTL + * @userinfo: stores user context specific information. + * The field @fileinfo.file holds pointer to open device file state structure + * for the Linux user-space client applications * @magic: magic number to check consistency when pointer is retrieved * from file private field */ struct canuser_t { + unsigned long flags; struct list_head peers; struct canque_ends_t *qends; - struct file *file; /* back ptr to file */ struct msgobj_t *msgobj; struct canque_edge_t *rx_edge0; /* simplifies IOCTL */ + union { + struct { + struct file *file; /* back ptr to file */ + } fileinfo; + #ifdef CAN_WITH_RTL + struct { + struct rtl_file *file; + } rtlinfo; + #endif /*CAN_WITH_RTL*/ + } userinfo; int magic; }; @@ -277,6 +317,7 @@ struct hwspecops_t { * @remote_request: configures message object and asks for RTR message * @check_tx_stat: checks state of transmission engine * @wakeup_tx: wakeup TX processing + * @filtch_rq: optional routine for propagation of outgoing edges filters to HW * @enable_configuration: enable chip configuration mode * @disable_configuration: disable chip configuration mode * @set_btregs: configures bitrate registers @@ -304,18 +345,20 @@ struct chipspecops_t { int (*remote_request)(struct chip_t *chip, struct msgobj_t *obj); int (*check_tx_stat)(struct chip_t *chip); int (*wakeup_tx)(struct chip_t *chip, struct msgobj_t *obj); + int (*filtch_rq)(struct chip_t *chip, struct msgobj_t *obj); int (*enable_configuration)(struct chip_t *chip); int (*disable_configuration)(struct chip_t *chip); int (*set_btregs)(struct chip_t *chip, unsigned short btr0, unsigned short btr1); int (*start_chip)(struct chip_t *chip); int (*stop_chip)(struct chip_t *chip); - irqreturn_t (*irq_handler)(int irq, void *dev_id, struct pt_regs *regs); + can_irqreturn_t (*irq_handler)(int irq, void *dev_id, struct pt_regs *regs); }; struct mem_addr { void *address; struct mem_addr *next; + size_t size; }; /* Structure for the RTR queue */ @@ -329,10 +372,11 @@ struct rtr_id { extern int major; extern int minor[MAX_TOT_CHIPS]; extern int extended; -extern int baudrate; +extern int baudrate[MAX_TOT_CHIPS]; extern char *hw[MAX_HW_CARDS]; extern int irq[MAX_IRQ]; extern unsigned long io[MAX_HW_CARDS]; +extern int processlocal; extern struct canhardware_t *hardware_p; extern struct chip_t *chips_p[MAX_TOT_CHIPS]; @@ -340,6 +384,52 @@ extern struct msgobj_t *objects_p[MAX_TOT_MSGOBJS]; extern struct mem_addr *mem_head; + +#if defined(CONFIG_OC_LINCAN_PORTIO_ONLY) +extern inline void can_write_reg(const struct chip_t *chip, unsigned char data, unsigned address) +{ + outb(data, chip->chip_base_addr+address); +} +extern inline unsigned can_read_reg(const struct chip_t *chip, unsigned address) +{ + return inb(chip->chip_base_addr+address); +} +extern inline void canobj_write_reg(const struct chip_t *chip, const struct msgobj_t *obj, + unsigned char data, unsigned address) +{ + outb(data, obj->obj_base_addr+address); +} +extern inline unsigned canobj_read_reg(const struct chip_t *chip, const struct msgobj_t *obj, + unsigned address) +{ + return inb(obj->obj_base_addr+address); +} + +#elif defined(CONFIG_OC_LINCAN_MEMIO_ONLY) +extern inline void can_write_reg(const struct chip_t *chip, unsigned char data, unsigned address) +{ + writeb(data, chip->chip_base_addr+address); +} +extern inline unsigned can_read_reg(const struct chip_t *chip, unsigned address) +{ + return readb(chip->chip_base_addr+address); +} +extern inline void canobj_write_reg(const struct chip_t *chip, const struct msgobj_t *obj, + unsigned char data, unsigned address) +{ + writeb(data, obj->obj_base_addr+address); +} +extern inline unsigned canobj_read_reg(const struct chip_t *chip, const struct msgobj_t *obj, + unsigned address) +{ + return readb(obj->obj_base_addr+address); +} + +#else /*CONFIG_OC_LINCAN_DYNAMICIO*/ +#ifndef CONFIG_OC_LINCAN_DYNAMICIO +#define CONFIG_OC_LINCAN_DYNAMICIO +#endif + /* Inline function to write to the hardware registers. The argument address is * relative to the memory map of the chip and not the absolute memory address. */ @@ -373,6 +463,8 @@ extern inline unsigned canobj_read_reg(const struct chip_t *chip, const struct m return chip->read_register(address_to_read); } +#endif /*CONFIG_OC_LINCAN_DYNAMICIO*/ + int can_base_addr_fixup(struct candevice_t *candev, unsigned long new_base); int can_request_io_region(unsigned long start, unsigned long n, const char *name); void can_release_io_region(unsigned long start, unsigned long n); @@ -386,3 +478,9 @@ struct boardtype_t { }; const struct boardtype_t* boardtype_find(const char *str); + +int can_check_dev_taken(void *anydev); + +#ifdef CAN_WITH_RTL +extern int can_rtl_priority; +#endif /*CAN_WITH_RTL*/