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30ad64b8ac
Since most dvb ioctls wrap their real work with dvb_usercopy, the static mutex
used in dvb_usercopy effectively is a global lock for dvb ioctls.
Unfortunately, frontend ioctls can be blocked by the frontend thread for
several seconds; this leads to unacceptable lock contention. Mitigate that by
pushing the mutex from dvb_usercopy down to the individual, device specific
ioctls.
There are 10 such ioctl functions using dvb_usercopy, either calling it
directly, or via the trivial wrapper dvb_generic_ioctl. The following already
employ their own locking and look safe:
• dvb_demux_ioctl (as per dvb_demux_do_ioctl)
• dvb_dvr_ioctl (as per dvb_dvr_do_ioctl)
• dvb_osd_ioctl (as per single non-trivial callee)
• fdtv_ca_ioctl (as per callees)
• dvb_frontend_ioctl
The following functions do not, and are thus changed to use a device specific
mutex:
• dvb_net_ioctl (as per dvb_net_do_ioctl)
• dvb_ca_en50221_io_ioctl (as per dvb_ca_en50221_io_do_ioctl)
• dvb_video_ioctl
• dvb_audio_ioctl
• dvb_ca_ioctl
Signed-off-by: Nikolaus Schulz <schulz@macnetix.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
318 lines
7.0 KiB
C
318 lines
7.0 KiB
C
#ifndef _AV7110_H_
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#define _AV7110_H_
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#include <linux/interrupt.h>
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#include <linux/socket.h>
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#include <linux/netdevice.h>
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/time.h>
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#include <linux/dvb/video.h>
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#include <linux/dvb/audio.h>
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#include <linux/dvb/dmx.h>
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#include <linux/dvb/ca.h>
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#include <linux/dvb/osd.h>
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#include <linux/dvb/net.h>
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#include <linux/mutex.h>
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#include "dvbdev.h"
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#include "demux.h"
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#include "dvb_demux.h"
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#include "dmxdev.h"
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#include "dvb_filter.h"
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#include "dvb_net.h"
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#include "dvb_ringbuffer.h"
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#include "dvb_frontend.h"
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#include "ves1820.h"
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#include "ves1x93.h"
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#include "stv0299.h"
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#include "tda8083.h"
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#include "sp8870.h"
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#include "stv0297.h"
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#include "l64781.h"
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#include <media/saa7146_vv.h>
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#define ANALOG_TUNER_VES1820 1
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#define ANALOG_TUNER_STV0297 2
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extern int av7110_debug;
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#define dprintk(level,args...) \
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do { if ((av7110_debug & level)) { printk("dvb-ttpci: %s(): ", __func__); printk(args); } } while (0)
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#define MAXFILT 32
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enum {AV_PES_STREAM, PS_STREAM, TS_STREAM, PES_STREAM};
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enum av7110_video_mode {
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AV7110_VIDEO_MODE_PAL = 0,
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AV7110_VIDEO_MODE_NTSC = 1
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};
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struct av7110_p2t {
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u8 pes[TS_SIZE];
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u8 counter;
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long int pos;
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int frags;
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struct dvb_demux_feed *feed;
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};
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/* video MPEG decoder events: */
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/* (code copied from dvb_frontend.c, should maybe be factored out...) */
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#define MAX_VIDEO_EVENT 8
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struct dvb_video_events {
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struct video_event events[MAX_VIDEO_EVENT];
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int eventw;
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int eventr;
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int overflow;
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wait_queue_head_t wait_queue;
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spinlock_t lock;
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};
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struct av7110;
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/* infrared remote control */
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struct infrared {
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u16 key_map[256];
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struct input_dev *input_dev;
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char input_phys[32];
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struct timer_list keyup_timer;
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struct tasklet_struct ir_tasklet;
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void (*ir_handler)(struct av7110 *av7110, u32 ircom);
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u32 ir_command;
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u32 ir_config;
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u32 device_mask;
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u8 protocol;
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u8 inversion;
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u16 last_key;
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u16 last_toggle;
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u8 delay_timer_finished;
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};
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/* place to store all the necessary device information */
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struct av7110 {
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/* devices */
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struct dvb_device dvb_dev;
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struct dvb_net dvb_net;
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struct video_device *v4l_dev;
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struct video_device *vbi_dev;
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struct saa7146_dev *dev;
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struct i2c_adapter i2c_adap;
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char *card_name;
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/* support for analog module of dvb-c */
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int analog_tuner_flags;
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int current_input;
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u32 current_freq;
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struct tasklet_struct debi_tasklet;
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struct tasklet_struct gpio_tasklet;
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int adac_type; /* audio DAC type */
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#define DVB_ADAC_TI 0
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#define DVB_ADAC_CRYSTAL 1
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#define DVB_ADAC_MSP34x0 2
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#define DVB_ADAC_MSP34x5 3
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#define DVB_ADAC_NONE -1
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/* buffers */
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void *iobuf; /* memory for all buffers */
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struct dvb_ringbuffer avout; /* buffer for video or A/V mux */
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#define AVOUTLEN (128*1024)
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struct dvb_ringbuffer aout; /* buffer for audio */
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#define AOUTLEN (64*1024)
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void *bmpbuf;
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#define BMPLEN (8*32768+1024)
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/* bitmap buffers and states */
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int bmpp;
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int bmplen;
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volatile int bmp_state;
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#define BMP_NONE 0
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#define BMP_LOADING 1
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#define BMP_LOADED 2
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wait_queue_head_t bmpq;
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/* DEBI and polled command interface */
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spinlock_t debilock;
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struct mutex dcomlock;
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volatile int debitype;
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volatile int debilen;
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/* Recording and playback flags */
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int rec_mode;
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int playing;
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#define RP_NONE 0
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#define RP_VIDEO 1
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#define RP_AUDIO 2
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#define RP_AV 3
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/* OSD */
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int osdwin; /* currently active window */
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u16 osdbpp[8];
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struct mutex osd_mutex;
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/* CA */
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ca_slot_info_t ci_slot[2];
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enum av7110_video_mode vidmode;
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struct dmxdev dmxdev;
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struct dvb_demux demux;
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struct dmx_frontend hw_frontend;
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struct dmx_frontend mem_frontend;
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/* for budget mode demux1 */
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struct dmxdev dmxdev1;
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struct dvb_demux demux1;
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struct dvb_net dvb_net1;
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spinlock_t feedlock1;
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int feeding1;
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u32 ttbp;
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unsigned char *grabbing;
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struct saa7146_pgtable pt;
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struct tasklet_struct vpe_tasklet;
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bool full_ts;
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int fe_synced;
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struct mutex pid_mutex;
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int video_blank;
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struct video_status videostate;
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u16 display_panscan;
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int display_ar;
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int trickmode;
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#define TRICK_NONE 0
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#define TRICK_FAST 1
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#define TRICK_SLOW 2
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#define TRICK_FREEZE 3
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struct audio_status audiostate;
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struct dvb_demux_filter *handle2filter[32];
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struct av7110_p2t p2t_filter[MAXFILT];
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struct dvb_filter_pes2ts p2t[2];
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struct ipack ipack[2];
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u8 *kbuf[2];
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int sinfo;
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int feeding;
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int arm_errors;
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int registered;
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/* AV711X */
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u32 arm_fw;
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u32 arm_rtsl;
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u32 arm_vid;
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u32 arm_app;
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u32 avtype;
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int arm_ready;
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struct task_struct *arm_thread;
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wait_queue_head_t arm_wait;
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u16 arm_loops;
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void *debi_virt;
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dma_addr_t debi_bus;
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u16 pids[DMX_PES_OTHER];
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struct dvb_ringbuffer ci_rbuffer;
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struct dvb_ringbuffer ci_wbuffer;
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struct audio_mixer mixer;
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struct dvb_adapter dvb_adapter;
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struct dvb_device *video_dev;
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struct dvb_device *audio_dev;
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struct dvb_device *ca_dev;
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struct dvb_device *osd_dev;
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struct dvb_video_events video_events;
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video_size_t video_size;
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u16 wssMode;
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u16 wssData;
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struct infrared ir;
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/* firmware stuff */
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unsigned char *bin_fw;
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unsigned long size_fw;
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unsigned char *bin_dpram;
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unsigned long size_dpram;
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unsigned char *bin_root;
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unsigned long size_root;
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struct dvb_frontend* fe;
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fe_status_t fe_status;
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struct mutex ioctl_mutex;
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/* crash recovery */
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void (*recover)(struct av7110* av7110);
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fe_sec_voltage_t saved_voltage;
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fe_sec_tone_mode_t saved_tone;
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struct dvb_diseqc_master_cmd saved_master_cmd;
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fe_sec_mini_cmd_t saved_minicmd;
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int (*fe_init)(struct dvb_frontend* fe);
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int (*fe_read_status)(struct dvb_frontend* fe, fe_status_t* status);
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int (*fe_diseqc_reset_overload)(struct dvb_frontend* fe);
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int (*fe_diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
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int (*fe_diseqc_send_burst)(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd);
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int (*fe_set_tone)(struct dvb_frontend* fe, fe_sec_tone_mode_t tone);
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int (*fe_set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
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int (*fe_dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
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int (*fe_set_frontend)(struct dvb_frontend *fe);
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};
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extern int ChangePIDs(struct av7110 *av7110, u16 vpid, u16 apid, u16 ttpid,
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u16 subpid, u16 pcrpid);
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extern int av7110_check_ir_config(struct av7110 *av7110, int force);
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extern int av7110_ir_init(struct av7110 *av7110);
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extern void av7110_ir_exit(struct av7110 *av7110);
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/* msp3400 i2c subaddresses */
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#define MSP_WR_DEM 0x10
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#define MSP_RD_DEM 0x11
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#define MSP_WR_DSP 0x12
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#define MSP_RD_DSP 0x13
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extern int i2c_writereg(struct av7110 *av7110, u8 id, u8 reg, u8 val);
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extern u8 i2c_readreg(struct av7110 *av7110, u8 id, u8 reg);
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extern int msp_writereg(struct av7110 *av7110, u8 dev, u16 reg, u16 val);
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extern int av7110_init_analog_module(struct av7110 *av7110);
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extern int av7110_init_v4l(struct av7110 *av7110);
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extern int av7110_exit_v4l(struct av7110 *av7110);
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#endif /* _AV7110_H_ */
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