diff options
Diffstat (limited to 'drivers/staging/comedi/comedidev.h')
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 225 |
1 files changed, 131 insertions, 94 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index f3a990b45df..8f4e44bfbe0 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -14,48 +14,25 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ #ifndef _COMEDIDEV_H #define _COMEDIDEV_H -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/kdev_t.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/spinlock.h> -#include <linux/mutex.h> -#include <linux/wait.h> -#include <linux/mm.h> -#include <linux/init.h> -#include <linux/vmalloc.h> #include <linux/dma-mapping.h> -#include <linux/uaccess.h> -#include <linux/io.h> -#include <linux/timer.h> +#include <linux/mutex.h> +#include <linux/spinlock_types.h> +#include <linux/rwsem.h> +#include <linux/kref.h> #include "comedi.h" -#define DPRINTK(format, args...) do { \ - if (comedi_debug) \ - pr_debug("comedi: " format, ## args); \ -} while (0) - #define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c)) #define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \ COMEDI_MINORVERSION, COMEDI_MICROVERSION) #define COMEDI_RELEASE VERSION -#define COMEDI_NUM_MINORS 0x100 #define COMEDI_NUM_BOARD_MINORS 0x30 -#define COMEDI_FIRST_SUBDEVICE_MINOR COMEDI_NUM_BOARD_MINORS struct comedi_subdevice { struct comedi_device *device; @@ -79,41 +56,36 @@ struct comedi_subdevice { unsigned int maxdata; /* if maxdata==0, use list */ const unsigned int *maxdata_list; /* list is channel specific */ - unsigned int flags; - const unsigned int *flaglist; - - unsigned int settling_time_0; - const struct comedi_lrange *range_table; const struct comedi_lrange *const *range_table_list; unsigned int *chanlist; /* driver-owned chanlist (not used) */ - int (*insn_read) (struct comedi_device *, struct comedi_subdevice *, + int (*insn_read)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned int *); + int (*insn_write)(struct comedi_device *, struct comedi_subdevice *, struct comedi_insn *, unsigned int *); - int (*insn_write) (struct comedi_device *, struct comedi_subdevice *, + int (*insn_bits)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned int *); + int (*insn_config)(struct comedi_device *, struct comedi_subdevice *, struct comedi_insn *, unsigned int *); - int (*insn_bits) (struct comedi_device *, struct comedi_subdevice *, - struct comedi_insn *, unsigned int *); - int (*insn_config) (struct comedi_device *, struct comedi_subdevice *, - struct comedi_insn *, unsigned int *); - - int (*do_cmd) (struct comedi_device *, struct comedi_subdevice *); - int (*do_cmdtest) (struct comedi_device *, struct comedi_subdevice *, - struct comedi_cmd *); - int (*poll) (struct comedi_device *, struct comedi_subdevice *); - int (*cancel) (struct comedi_device *, struct comedi_subdevice *); + + int (*do_cmd)(struct comedi_device *, struct comedi_subdevice *); + int (*do_cmdtest)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_cmd *); + int (*poll)(struct comedi_device *, struct comedi_subdevice *); + int (*cancel)(struct comedi_device *, struct comedi_subdevice *); /* int (*do_lock)(struct comedi_device *, struct comedi_subdevice *); */ /* int (*do_unlock)(struct comedi_device *, \ struct comedi_subdevice *); */ /* called when the buffer changes */ - int (*buf_change) (struct comedi_device *dev, - struct comedi_subdevice *s, unsigned long new_size); + int (*buf_change)(struct comedi_device *dev, + struct comedi_subdevice *s, unsigned long new_size); - void (*munge) (struct comedi_device *dev, struct comedi_subdevice *s, - void *data, unsigned int num_bytes, - unsigned int start_chan_index); + void (*munge)(struct comedi_device *dev, struct comedi_subdevice *s, + void *data, unsigned int num_bytes, + unsigned int start_chan_index); enum dma_data_direction async_dma_dir; unsigned int state; @@ -127,18 +99,20 @@ struct comedi_buf_page { dma_addr_t dma_addr; }; -struct comedi_async { - struct comedi_subdevice *subdevice; +struct comedi_buf_map { + struct device *dma_hw_dev; + struct comedi_buf_page *page_list; + unsigned int n_pages; + enum dma_data_direction dma_dir; + struct kref refcount; +}; +struct comedi_async { void *prealloc_buf; /* pre-allocated buffer */ unsigned int prealloc_bufsz; /* buffer size, in bytes */ - /* virtual and dma address of each page */ - struct comedi_buf_page *buf_page_list; - unsigned n_buf_pages; /* num elements in buf_page_list */ + struct comedi_buf_map *buf_map; /* map of buffer pages */ unsigned int max_bufsize; /* maximum buffer size, bytes */ - /* current number of mmaps of prealloc_buf */ - unsigned int mmap_count; /* byte count for writer (write completed) */ unsigned int buf_write_count; @@ -168,13 +142,10 @@ struct comedi_async { wait_queue_head_t wait_head; - /* callback stuff */ unsigned int cb_mask; - int (*cb_func) (unsigned int flags, void *); - void *cb_arg; - int (*inttrig) (struct comedi_device *dev, struct comedi_subdevice *s, - unsigned int x); + int (*inttrig)(struct comedi_device *dev, struct comedi_subdevice *s, + unsigned int x); }; struct comedi_driver { @@ -182,9 +153,9 @@ struct comedi_driver { const char *driver_name; struct module *module; - int (*attach) (struct comedi_device *, struct comedi_devconfig *); - void (*detach) (struct comedi_device *); - int (*auto_attach) (struct comedi_device *, unsigned long); + int (*attach)(struct comedi_device *, struct comedi_devconfig *); + void (*detach)(struct comedi_device *); + int (*auto_attach)(struct comedi_device *, unsigned long); /* number of elements in board_name and board_id arrays */ unsigned int num_names; @@ -200,6 +171,7 @@ struct comedi_device { struct device *class_dev; int minor; + unsigned int detach_count; /* hw_dev is passed to dma_alloc_coherent when allocating async buffers * for subdevices that have async_dma_dir set to something other than * DMA_NONE */ @@ -207,16 +179,19 @@ struct comedi_device { const char *board_name; const void *board_ptr; - int attached; + bool attached:1; + bool ioenabled:1; spinlock_t spinlock; struct mutex mutex; - int in_request_module; + struct rw_semaphore attach_lock; + struct kref refcount; int n_subdevices; struct comedi_subdevice *subdevices; /* dumb */ unsigned long iobase; + unsigned long iolen; unsigned int irq; struct comedi_subdevice *read_subdev; @@ -224,8 +199,8 @@ struct comedi_device { struct fasync_struct *async_queue; - int (*open) (struct comedi_device *dev); - void (*close) (struct comedi_device *dev); + int (*open)(struct comedi_device *dev); + void (*close)(struct comedi_device *dev); }; static inline const void *comedi_board(const struct comedi_device *dev) @@ -233,12 +208,6 @@ static inline const void *comedi_board(const struct comedi_device *dev) return dev->board_ptr; } -#ifdef CONFIG_COMEDI_DEBUG -extern int comedi_debug; -#else -static const int comedi_debug; -#endif - /* * function prototypes */ @@ -256,7 +225,8 @@ enum comedi_minor_bits { static const unsigned COMEDI_SUBDEVICE_MINOR_SHIFT = 4; static const unsigned COMEDI_SUBDEVICE_MINOR_OFFSET = 1; -struct comedi_device *comedi_dev_from_minor(unsigned minor); +struct comedi_device *comedi_dev_get_from_minor(unsigned minor); +int comedi_dev_put(struct comedi_device *dev); void init_polling(void); void cleanup_polling(void); @@ -265,16 +235,18 @@ void stop_polling(struct comedi_device *); /* subdevice runflags */ enum subdevice_runflags { - SRF_USER = 0x00000001, SRF_RT = 0x00000002, /* indicates an COMEDI_CB_ERROR event has occurred since the last * command was started */ SRF_ERROR = 0x00000004, - SRF_RUNNING = 0x08000000 + SRF_RUNNING = 0x08000000, + SRF_FREE_SPRIV = 0x80000000, /* free s->private on detach */ }; bool comedi_is_subdevice_running(struct comedi_subdevice *s); +void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size); + int comedi_check_chanlist(struct comedi_subdevice *s, int n, unsigned int *chanlist); @@ -293,6 +265,10 @@ extern const struct comedi_lrange range_bipolar5; extern const struct comedi_lrange range_bipolar2_5; extern const struct comedi_lrange range_unipolar10; extern const struct comedi_lrange range_unipolar5; +extern const struct comedi_lrange range_unipolar2_5; +extern const struct comedi_lrange range_0_20mA; +extern const struct comedi_lrange range_4_20mA; +extern const struct comedi_lrange range_0_32mA; extern const struct comedi_lrange range_unknown; #define range_digital range_unipolar5 @@ -308,7 +284,38 @@ struct comedi_lrange { struct comedi_krange range[GCC_ZERO_LENGTH_ARRAY]; }; -/* some silly little inline functions */ +static inline bool comedi_range_is_bipolar(struct comedi_subdevice *s, + unsigned int range) +{ + return s->range_table->range[range].min < 0; +} + +static inline bool comedi_range_is_unipolar(struct comedi_subdevice *s, + unsigned int range) +{ + return s->range_table->range[range].min >= 0; +} + +static inline bool comedi_chan_range_is_bipolar(struct comedi_subdevice *s, + unsigned int chan, + unsigned int range) +{ + return s->range_table_list[chan]->range[range].min < 0; +} + +static inline bool comedi_chan_range_is_unipolar(struct comedi_subdevice *s, + unsigned int chan, + unsigned int range) +{ + return s->range_table_list[chan]->range[range].min >= 0; +} + +/* munge between offset binary and two's complement values */ +static inline unsigned int comedi_offset_munge(struct comedi_subdevice *s, + unsigned int val) +{ + return val ^ s->maxdata ^ (s->maxdata >> 1); +} static inline unsigned int bytes_per_sample(const struct comedi_subdevice *subd) { @@ -326,31 +333,59 @@ static inline unsigned int bytes_per_sample(const struct comedi_subdevice *subd) */ int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev); -unsigned int comedi_buf_write_alloc(struct comedi_async *, unsigned int); -unsigned int comedi_buf_write_free(struct comedi_async *, unsigned int); +unsigned int comedi_buf_write_alloc(struct comedi_subdevice *s, unsigned int n); +unsigned int comedi_buf_write_free(struct comedi_subdevice *s, unsigned int n); -unsigned int comedi_buf_read_n_available(struct comedi_async *); -unsigned int comedi_buf_read_alloc(struct comedi_async *, unsigned int); -unsigned int comedi_buf_read_free(struct comedi_async *, unsigned int); +unsigned int comedi_buf_read_n_available(struct comedi_subdevice *s); +unsigned int comedi_buf_read_alloc(struct comedi_subdevice *s, unsigned int n); +unsigned int comedi_buf_read_free(struct comedi_subdevice *s, unsigned int n); -int comedi_buf_put(struct comedi_async *, short); -int comedi_buf_get(struct comedi_async *, short *); +int comedi_buf_put(struct comedi_subdevice *s, unsigned short x); +int comedi_buf_get(struct comedi_subdevice *s, unsigned short *x); -void comedi_buf_memcpy_to(struct comedi_async *async, unsigned int offset, +void comedi_buf_memcpy_to(struct comedi_subdevice *s, unsigned int offset, const void *source, unsigned int num_bytes); -void comedi_buf_memcpy_from(struct comedi_async *async, unsigned int offset, +void comedi_buf_memcpy_from(struct comedi_subdevice *s, unsigned int offset, void *destination, unsigned int num_bytes); /* drivers.c - general comedi driver functions */ +#define COMEDI_TIMEOUT_MS 1000 + +int comedi_timeout(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, + int (*cb)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned long context), + unsigned long context); + +int comedi_dio_insn_config(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned int *data, + unsigned int mask); +unsigned int comedi_dio_update_state(struct comedi_subdevice *, + unsigned int *data); + +void *comedi_alloc_devpriv(struct comedi_device *, size_t); int comedi_alloc_subdevices(struct comedi_device *, int); +int comedi_load_firmware(struct comedi_device *, struct device *, + const char *name, + int (*cb)(struct comedi_device *, + const u8 *data, size_t size, + unsigned long context), + unsigned long context); + +int __comedi_request_region(struct comedi_device *, + unsigned long start, unsigned long len); +int comedi_request_region(struct comedi_device *, + unsigned long start, unsigned long len); +void comedi_legacy_detach(struct comedi_device *); + int comedi_auto_config(struct device *, struct comedi_driver *, unsigned long context); void comedi_auto_unconfig(struct device *); int comedi_driver_register(struct comedi_driver *); -int comedi_driver_unregister(struct comedi_driver *); +void comedi_driver_unregister(struct comedi_driver *); /** * module_comedi_driver() - Helper macro for registering a comedi driver @@ -373,21 +408,22 @@ int comedi_driver_unregister(struct comedi_driver *); */ #define PCI_VENDOR_ID_KOLTER 0x1001 #define PCI_VENDOR_ID_ICP 0x104c -#define PCI_VENDOR_ID_AMCC 0x10e8 #define PCI_VENDOR_ID_DT 0x1116 #define PCI_VENDOR_ID_IOTECH 0x1616 #define PCI_VENDOR_ID_CONTEC 0x1221 #define PCI_VENDOR_ID_RTD 0x1435 +#define PCI_VENDOR_ID_HUMUSOFT 0x186c struct pci_dev; struct pci_driver; struct pci_dev *comedi_to_pci_dev(struct comedi_device *); -int comedi_pci_enable(struct pci_dev *, const char *); -void comedi_pci_disable(struct pci_dev *); +int comedi_pci_enable(struct comedi_device *); +void comedi_pci_disable(struct comedi_device *); -int comedi_pci_auto_config(struct pci_dev *, struct comedi_driver *); +int comedi_pci_auto_config(struct pci_dev *, struct comedi_driver *, + unsigned long context); void comedi_pci_auto_unconfig(struct pci_dev *); int comedi_pci_driver_register(struct comedi_driver *, struct pci_driver *); @@ -420,12 +456,12 @@ static inline struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev) return NULL; } -static inline int comedi_pci_enable(struct pci_dev *dev, const char *name) +static inline int comedi_pci_enable(struct comedi_device *dev) { return -ENOSYS; } -static inline void comedi_pci_disable(struct pci_dev *dev) +static inline void comedi_pci_disable(struct comedi_device *dev) { } @@ -476,6 +512,7 @@ struct usb_driver; struct usb_interface; struct usb_interface *comedi_to_usb_interface(struct comedi_device *); +struct usb_device *comedi_to_usb_dev(struct comedi_device *); int comedi_usb_auto_config(struct usb_interface *, struct comedi_driver *, unsigned long context); |